A plug-in connector
Patent Information
- Application Number
- CN202521927361.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-08
- Publication Date
- 2026-09-29
- Estimated Expiration
- 2035-09-08
AI Technical Summary
[0003]现有的插pin式连接器在生产时，端子需要成型上下后胶塞，再安装于前胶芯内，且接地弹片亦需成型上下接地胶片，通过接地胶片将接地弹片安装于前胶芯的前端，这种安装方式不仅结构复杂，而且在组装过程中容易出现错位或接触不良的问题，导致连接器的导电性能下降
[0021]本实用新型通过对端子结构进行改进，使得连接端子能够直接插接于前胶芯的端子连接孔内，无需再额外设置上下后胶塞，简化了整体装配工艺，降低了生产成本。
Smart Images
Figure CN224817465U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connector technology, and in particular to a pin-type connector. Background Technology
[0002] In our daily lives and in the future 5G communication network life, we often need to use devices such as mobile phones, tablets, and fast chargers. However, when we use these mobile devices, we need to achieve fast charging and normal data transmission and exchange, which requires an interface that can transmit ultra-high current.
[0003] In existing pin-type connectors, the terminals require upper and lower rear rubber plugs to be formed during production before being installed inside the front rubber core. Similarly, the grounding spring also requires upper and lower grounding rubber sheets, which are then used to install the grounding spring at the front end of the front rubber core. This installation method is not only structurally complex but also prone to misalignment or poor contact during assembly, leading to a decrease in the connector's conductivity. Furthermore, after being subjected to high-frequency vibration or prolonged use, the terminals of existing pin-type connectors are prone to loosening or even detachment, affecting the connector's stability and lifespan. Utility Model Content
[0004] The purpose of this utility model is to overcome the above-mentioned defects in the prior art and provide a pin-type connector that enables rapid installation of connection terminals and grounding terminals, simplifies the installation process, effectively improves production efficiency and reduces costs, and also improves the connection stability of each terminal.
[0005] To achieve the above objectives, this utility model provides a pin-type connector, comprising:
[0006] The main housing has a hollow mounting cavity inside.
[0007] The front core is installed inside the mounting cavity. The front end of the front core is provided with an external plug-in interface. The upper and lower end faces of the front end of the front core form a first mounting groove. A grounding interface communicating with the plug-in interface is formed on the first mounting groove.
[0008] A plurality of connecting terminals are installed inside the front rubber core, and the front end of the connecting terminal is placed inside the insertion interface to form a first abutting part. The connecting terminal is provided with a locking protrusion that engages with the front rubber core.
[0009] A grounding terminal is installed in the first mounting groove. The grounding terminal is provided with a second abutting part, which extends into the grounding interface. A snap-fit part is provided on the grounding terminal, which abuts against the inner wall of the first mounting groove.
[0010] A locking spring is engaged with both sides of the front rubber core, and one end of the locking spring extends to both sides of the inner side of the insertion interface to form a third abutment portion.
[0011] Furthermore, two rows of symmetrically arranged terminal connection holes are formed inside the front core. The terminal connection holes communicate with the plug interface, and the connection terminals are inserted into the terminal connection holes, so that the first abutment part is placed inside the plug interface.
[0012] Furthermore, a first locking protrusion, a second locking protrusion, and a third locking protrusion are formed in the middle of the connecting terminal, a first groove is formed between the first locking protrusion and the second locking protrusion, and a second groove is formed between the second locking protrusion and the third locking protrusion.
[0013] Furthermore, a first transition arc edge is formed between the first locking protrusion and the connecting terminal, a second transition arc edge is formed between the second locking protrusion and the first groove, a first vertical edge is provided on the other side of the second locking protrusion away from the second transition arc edge, and the edge on which the third locking protrusion is connected to the second groove is the second vertical edge.
[0014] Furthermore, the height of the second locking protrusion is greater than the height of the third locking protrusion, and the height of the third locking protrusion is greater than the height of the first locking protrusion.
[0015] Furthermore, a second snap-fit groove is formed on both sides of the first mounting groove, and a fourth snap-fit protrusion extends downward on both sides of the grounding terminal, the fourth snap-fit protrusion being inserted into the second snap-fit groove.
[0016] Furthermore, the grounding terminal has a downwardly curved first arc connecting portion formed on both sides, and the fourth snap-fit protrusion is disposed at the end of the first arc connecting portion, and the width of the fourth snap-fit protrusion is greater than the width of the first arc connecting portion, so that the two ends of the fourth snap-fit protrusion are suspended on both sides of the first arc connecting portion.
[0017] Furthermore, the fourth snap-fit protrusion has an overall inverted trapezoidal structure.
[0018] Furthermore, the front core is provided with third connecting grooves on both sides that connect to the plug interface. The third connecting grooves extend to the rear side of the front core to form a fourth connecting groove. The fourth connecting groove is placed between the two rows of terminal connecting holes. In the middle of the locking spring is a connecting crossbar that connects the two third abutment parts. The connecting crossbar is installed in the fourth connecting groove.
[0019] Furthermore, a third engaging protrusion is formed on the inner wall of the locking spring, and the third engaging protrusion gradually protrudes from the third abutment portion toward the connecting crossbar.
[0020] Compared with the prior art, the present invention has the following advantages:
[0021] This invention improves the terminal structure, allowing the connecting terminal to be directly inserted into the terminal connection hole of the front rubber core, eliminating the need for additional upper and lower rear rubber plugs, thus simplifying the overall assembly process and reducing production costs.
[0022] By optimizing the structural design of the locking protrusion and the locking groove, the connection terminal achieves multi-point locking during insertion, enhancing connection stability and reducing wear and loosening caused by repeated insertion and removal. Furthermore, the third locking protrusion in the locking spring further improves the overall self-locking performance of the terminal, ensuring a reliable electrical connection even under complex operating conditions. This structure not only extends the connector's lifespan but also significantly enhances its adaptability to high-frequency vibration environments, providing a solid guarantee for the stable operation of high-end electronic equipment.
[0023] This invention also optimizes the structure of the grounding terminal. By setting a downward-curved first arc connecting part on both sides of the grounding terminal and configuring a wider fourth snap-fit protrusion at its end, the snap-fit between the grounding terminal and the front core is more secure and reliable. With the snap-fit part of the grounding terminal, the grounding terminal can be locked into the first mounting groove of the front core from the left, right and top, thereby replacing the existing assembly method of setting upper and lower grounding films, further simplifying the assembly process and improving the overall structural strength and stability of the connector. Attached Figure Description
[0024] To more clearly illustrate the technology in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the structure of a pin-type connector according to this utility model;
[0026] Figure 2 yes Figure 1 An explosion diagram;
[0027] Figure 3 This is a schematic diagram of the front adhesive core of this utility model;
[0028] Figure 4 yes Figure 3 Another perspective illustration;
[0029] Figure 5 This is a schematic diagram of the grounding terminal of this utility model;
[0030] Figure 6 This is a schematic diagram of the structure of the connection terminal of this utility model;
[0031] Figure 7 This is a schematic diagram of the locking spring of this utility model;
[0032] The diagram includes:
[0033] 1. Main housing; 11. Mounting cavity; 12. Fifth snap-fit protrusion; 2. Front rubber core; 21. Fifth snap-fit groove; 22. Insertion interface; 23. First mounting slot; 231. Second snap-fit through slot; 24. Grounding interface; 25. Terminal connection hole; 26. Third connection through slot; 27. Fourth connection slot; 3. Connection terminal; 31. First abutment part; 32. Locking protrusion; 321. First locking protrusion; 322. Second locking protrusion; 3 23. Third locking protrusion; 33. First groove; 34. Second groove; 35. First transition arc edge; 36. Second transition arc edge; 37. First vertical edge; 38. Second vertical edge; 4. Grounding terminal; 41. Second abutment part; 42. Locking part; 43. Transition groove; 44. First arc connection part; 45. Fourth locking protrusion; 5. Locking spring; 51. Third abutment part; 52. Connecting crossbar; 53. Third locking protrusion. Detailed Implementation
[0034] The technology of this embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiment is one embodiment of the present invention, and not all embodiments thereof. Based on this embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.
[0035] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second", such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.
[0037] like Figures 1 to 7This utility model discloses a pin-type connector, including a main housing 1, a front rubber core 2, several connecting terminals 3, a grounding terminal 4, and a locking spring 5.
[0038] like Figure 1 and Figure 2 As shown, the front core 2 of this utility model is installed inside the main housing 1. Specifically, a hollow mounting cavity 11 is formed inside the main housing 1. A fifth snap-fit protrusion 12 is provided on the main housing 1 that is recessed into the mounting cavity 11. A fifth snap-fit groove 21 matching the fifth snap-fit protrusion 12 is provided at the rear end of the front core 2. The snap-fit connection between the main housing 1 and the front core 2 is achieved by the cooperation of the fifth snap-fit groove 21 and the fifth snap-fit protrusion 12.
[0039] Figures 2 to 4 The front end of the front core 2 is provided with an external connector 22. The upper and lower end faces of the front end of the front core 2 form a first mounting groove 23. A grounding interface 24 communicating with the connector 22 is formed on the first mounting groove 23. As shown in the figure, a total of three grounding interfaces 24 are provided on the front core 2, arranged side by side in the first mounting groove 23 and communicating with the connector 22. The grounding terminal 4 is installed in the first mounting groove 23. A second abutment part 41 is provided on the grounding terminal 4. When the grounding terminal 4 is installed in the first mounting groove 23, the second abutment part 41 extends through the grounding interface 24 into the interior of the connector 22 for contact with the grounding terminal of the external device.
[0040] In this embodiment, the grounding terminal 4 is installed in the first mounting groove 23 by a snap-fit method. Specifically, a snap-fit part 42 is provided on the grounding terminal 4, and the snap-fit part 42 abuts against the inner wall of the first mounting groove 23. Figure 5 As shown, in this embodiment, the snap-fit portion 42 extends outward from the grounding terminal 4 body and the upper and lower end faces of the snap-fit portion 42 are inclined in the extension direction, so that the snap-fit portion 42 has a trapezoidal structure as a whole. Preferably, a U-shaped transition groove 43 is formed between the snap-fit portion 42 and the grounding terminal 4 on both sides, which can enhance the structural stability and elastic performance of the snap-fit portion 42 and make it more firmly abut against the inner wall of the first mounting groove 23.
[0041] To improve the locking firmness of the grounding terminal 4, in this embodiment, a second locking groove 231 is formed on both sides of the first mounting groove 23. A downwardly curved first arc connecting portion 44 is formed on both sides of the grounding terminal 4. A fourth locking protrusion 45 is connected to the end of the first arc connecting portion 44, and the width of the fourth locking protrusion 45 is greater than the width of the first arc connecting portion 44, so that both ends of the fourth locking protrusion 45 are suspended on both sides of the first arc connecting portion 44. During assembly, the fourth locking protrusion 45 is inserted into and passes through the second locking groove 231, so that the fourth locking protrusion 45 is placed inside the insertion interface 22 and its two sides abut against the inner wall of the insertion interface 22, thereby achieving a more secure locking. Furthermore, the fourth locking protrusion 45 has an overall inverted trapezoidal structure, which facilitates the insertion of the fourth locking protrusion 45 into the second locking groove 231.
[0042] The connecting terminal 3 is installed inside the front core 2, and the front end of the connecting terminal 3 is placed inside the plug interface 22 to form a first abutting part 31. Specifically, two rows of symmetrically arranged terminal connecting holes 25 are formed inside the front core 2. The terminal connecting holes 25 are connected to the plug interface 22. The connecting terminal 3 is directly inserted into the terminal connecting hole 25, so that the first abutting part 31 is placed inside the plug interface 22, forming upper and lower abutting parts for contacting the plug end of external equipment and realizing electrical connection. In this embodiment, in order to achieve a stable installation of the connecting terminal 3, a locking protrusion 32 is provided on the connecting terminal 3 to engage with the front rubber core 2. The locking protrusion 32 includes a first locking protrusion 321, a second locking protrusion 322, and a third locking protrusion 323 formed in the middle of the connecting terminal 3. The height of the second locking protrusion 322 is greater than the height of the third locking protrusion 323, and the height of the third locking protrusion 323 is greater than the height of the first locking protrusion 321. A first groove 33 is formed between the first locking protrusion 321 and the second locking protrusion 322, and a second groove 34 is formed between the second locking protrusion 322 and the third locking protrusion 323.
[0043] The first locking protrusion 321 forms a first transition arc edge 35 with the connecting terminal 3, the second locking protrusion 322 forms a second transition arc edge 36 with the first groove 33, the second locking protrusion 322 is provided with a first vertical edge 37 on the other side away from the second transition arc edge 36, and the edge of the third locking protrusion 323 connected to the second groove 34 is the second vertical edge 38. The first transition arc edge 35 and the second transition arc edge 36 are designed to form an inclined guide, making it easier and smoother for the connecting terminal 3 to be inserted into the terminal connecting hole 25. As the connecting terminal 3 is inserted, the first vertical edge 37 and the second vertical edge 38 keep the second locking protrusion 322 and the third locking protrusion 323 in a raised state, which can abut against the inner wall of the terminal connecting hole 25 to form an interference fit and achieve locking. At the same time, the first groove 33 and the second groove 34 are designed to give the first locking protrusion 321, the second locking protrusion 322 and the third locking protrusion 323 good extensibility, which can achieve a certain degree of contraction during the insertion and movement process, ensuring the insertion of the connecting terminal 3.
[0044] like Figure 2 , Figure 4 and Figure 7 As shown, the locking spring 5 is engaged with both sides of the front core 2, and one end of the locking spring 5 extends into the interior of the insertion interface 22 to form a third abutment part 51. Specifically, the front core 2 has a third connecting groove 26 connecting the insertion interface 22 on both sides. The third connecting groove 26 extends to the rear side of the front core 2 to form a fourth connecting groove 27. The fourth connecting groove 27 is placed between two rows of terminal connection holes 25. In the middle of the locking spring 5 is a connecting crossbar 52 connecting the two third abutment parts 51. 2. Installed within the fourth connecting groove 27, preferably, to improve the connection stability between the locking spring 5 and the front rubber core 2, a third locking protrusion 53 is formed on the inner wall of the locking spring 5. The third locking protrusion 53 gradually protrudes from the third abutment portion 51 towards the connecting crossbar 52, thereby making the connection between the locking spring 5 and the front rubber core 2 more tight and reliable. The third locking protrusion 53 abuts against the inner wall of the third connecting groove 26, forming a stable limiting structure to prevent the locking spring 5 from loosening or falling off during use. At the same time, after the front rubber core 2 is installed in the mounting cavity 11, the inner wall of the main housing 1 will also provide further limiting support for the locking spring 5, ensuring that the overall structure remains stable when subjected to external vibration or insertion / removal impact.
[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A pin-type connector, characterized in that, include: The main housing (1) has a hollow mounting cavity (11) inside. The front core (2) installed inside the mounting cavity (11) has an external plug-in interface (22) at the front end of the front core (2). The upper and lower end faces of the front end of the front core (2) form a first mounting groove (23), and a grounding interface (24) communicating with the plug-in interface (22) is formed on the first mounting groove (23). A plurality of connecting terminals (3) are installed in the front core (2), and the front end of the connecting terminal (3) is placed in the insertion interface (22) to form a first abutment (31). A locking protrusion (32) is provided on the connecting terminal (3) to engage with the front core (2). A grounding terminal (4) is installed in the first mounting groove (23). The grounding terminal (4) is provided with a second abutment (41), which extends into the grounding interface (24). A snap-fit part (42) is provided on the grounding terminal (4), which abuts against the inner wall of the first mounting groove (23). The locking spring is engaged with both sides of the front core (2), and one end of the locking spring extends to both sides of the inside of the insertion interface (22) to form a third abutment part (51).
2. A pin-type connector according to claim 1, characterized in that, Two rows of symmetrically arranged terminal connection holes (25) are formed inside the front core (2). The terminal connection holes (25) are connected to the plug interface (22). The connection terminal (3) is inserted into the terminal connection hole (25) so that the first abutment part (31) is placed in the plug interface (22).
3. A pin-type connector according to claim 2, characterized in that, The middle part of the connecting terminal (3) forms a first locking protrusion (321), a second locking protrusion (322) and a third locking protrusion (323), a first groove (33) is formed between the first locking protrusion (321) and the second locking protrusion (322), and a second groove (34) is formed between the second locking protrusion (322) and the third locking protrusion (323).
4. A pin-type connector according to claim 3, characterized in that, A first transition arc edge (35) is formed between the first locking protrusion (321) and the connecting terminal (3), a second transition arc edge (36) is formed between the second locking protrusion (322) and the first groove (33), a first vertical edge (37) is provided on the other side of the second locking protrusion (322) away from the second transition arc edge (36), and the edge on which the third locking protrusion (323) is connected to the second groove (34) is the second vertical edge (38).
5. A pin-type connector according to claim 4, characterized in that, The height of the second locking protrusion (322) is greater than the height of the third locking protrusion (323), and the height of the third locking protrusion (323) is greater than the height of the first locking protrusion (321).
6. A pin-type connector according to claim 1, characterized in that, The first mounting groove (23) has a second snap-fit groove (231) on both sides, and the grounding terminal (4) extends downward on both sides to form a fourth snap-fit protrusion (45), which is inserted into the second snap-fit groove (231).
7. A pin-type connector according to claim 6, characterized in that, The grounding terminal (4) has a downwardly curved first arc connecting portion (44) on both sides. The fourth snap-fit protrusion (45) is located at the end of the first arc connecting portion (44), and the width of the fourth snap-fit protrusion (45) is greater than the width of the first arc connecting portion (44), so that the two ends of the fourth snap-fit protrusion (45) are suspended on both sides of the first arc connecting portion (44).
8. A pin-type connector according to claim 7, characterized in that, The fourth snap-fit protrusion (45) has an overall inverted trapezoidal structure.
9. A pin-type connector according to claim 2, characterized in that, The front core (2) is provided with a third connecting groove (26) on both sides, which connects to the plug interface (22). The third connecting groove (26) extends to the rear side of the front core (2) to form a fourth connecting groove (27). The fourth connecting groove (27) is placed between the two rows of terminal connecting holes (25). In the middle of the locking spring (5), there is a connecting crossbar (52) connecting two third abutment parts (51). The connecting crossbar (52) is installed in the fourth connecting groove (27).
10. A pin-type connector according to claim 9, characterized in that, A third snap-fit protrusion (53) is formed on the inner wall of the snap-fit spring (5), and the third snap-fit protrusion (53) gradually protrudes from the third abutment part (51) toward the connecting crossbar (52).