A quick-plug wire-to-board connector with foolproof design

Abstract

This utility model discloses a quick-plug wire-to-board connector with a foolproof structure, including a plug assembly and a socket assembly. The socket assembly is fixed on the circuit board and also includes a foolproof structure and a quick-plug mechanism. The plug assembly includes a plug body and a plug portion at its front end. Guide ribs are symmetrically provided on both sides of the plug portion. The socket assembly includes a socket housing and a slot for accommodating the plug portion. The inner wall of the slot is provided with a guide groove that matches the guide ribs. The overall foolproof design is reliable, structurally preventing reverse insertion and avoiding short circuits or connector damage. Plug-in and unplugging are convenient and efficient. The L-shaped elastic buckle with a hemispherical fulcrum protrusion achieves "locking upon insertion and unlocking upon pressing," significantly reducing the single plug-in / unplugging time compared to traditional connectors. It is suitable for high-frequency maintenance scenarios, and the arc-shaped limiting groove restricts buckle deformation, preventing permanent damage.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically to a quick-plug wire-to-board connector with a foolproof structure. Background Technology

[0002] Wire-to-board connectors, as core connection components between circuit boards and external cables in electronic devices, are widely used in home appliances, industrial control, automotive electronics, and other fields. Currently, traditional connectors have significant technical drawbacks in practical use: First, the lack of effective pre-positioning design during insertion makes pin wear due to alignment deviations easy, affecting connection reliability; second, the fault-prevention mechanism is imperfect, with a high risk of reverse insertion, easily causing short circuits or connector damage, and is not user-friendly for non-professional operators; third, the insertion and removal operations are cumbersome, some requiring tools or manual tightening for fixation, making them unsuitable for high-frequency insertion and removal scenarios such as equipment maintenance and temporary wiring, and the elastic clips often lack travel limits, easily leading to excessive deformation and failure after long-term use. Utility Model Content

[0003] To overcome the shortcomings of existing technical solutions, this utility model provides a quick-plug wire-to-board connector with a foolproof structure, which can effectively solve the problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A quick-plug wire-to-board connector with a foolproof structure includes a plug assembly and a socket assembly. The socket assembly is fixed on a circuit board and also includes a foolproof structure and a quick-plug mechanism. The plug assembly includes a plug body and a plug portion at its front end. Guide ribs are symmetrically provided on both sides of the plug portion. The socket assembly includes a socket housing and a slot for accommodating the plug portion. The inner wall of the slot is provided with a guide groove that matches the guide ribs. The anti-mistake structure includes an anti-mistake protrusion at the front end of the plug body and an anti-mistake barrier at the insertion port of the socket housing. The cross-section of the anti-mistake protrusion is an asymmetrical trapezoid, and the anti-mistake barrier has a limiting notch that matches the shape of the anti-mistake protrusion. The quick plug-in / plug-out mechanism includes elastic buckles symmetrically arranged on both sides of the socket housing, locking grooves arranged on both sides of the plug body, and a pressing part arranged on the outside of the elastic buckles (when pressed, it drives the locking hook to disengage from the locking groove). The elastic buckles are provided with locking hooks, which can be engaged in the locking grooves.

[0005] As a further description of the above technical solution, a guide slope is provided between the anti-foolproof boss and the anti-foolproof barrier. When the plug assembly is inserted in the correct direction, the guide slope guides the anti-foolproof boss to slide into the limiting notch.

[0006] As a further description of the above technical solution, the elastic buckle is an L-shaped spring piece, the root of the elastic buckle is fixed to the socket housing, and the middle of the elastic buckle is provided with a fulcrum protrusion.

[0007] As a further description of the above technical solution, a buffer pad is provided in the lock groove, and the lock hook makes elastic contact with the buffer pad when it is engaged.

[0008] As a further description of the above technical solution, the guide rib is longer than the insertion part, and the front end of the guide rib is chamfered.

[0009] As a further description of the above technical solution, the bottom of the socket housing is provided with a positioning post, and the circuit board is provided with a corresponding positioning hole, wherein the positioning post and the positioning hole are interference fit.

[0010] As a further description of the above technical solution, the inclination angle of the guide slope is 30°-45°, and the surface of the guide slope is provided with a nano-coating to reduce friction.

[0011] As a further description of the above technical solution, the fulcrum protrusion is a hemispherical structure, and the socket housing is provided with an arc-shaped limiting groove for limiting the deformation stroke of the elastic buckle at the position corresponding to the fulcrum protrusion.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The quick-connect wire-to-board connector with a foolproof structure of this utility model has at least one of the following beneficial effects during use: Firstly, it is foolproof and reliable. The asymmetrical trapezoidal foolproof protrusion of the plug and the limiting notch of the socket cooperate to prevent reverse insertion from the structure, avoiding short circuits or connector damage. Combined with a 30°-45° guide slope and nano-coating, it reduces insertion resistance and eliminates the need for manual angle adjustment, lowering the operation threshold for non-professionals. Secondly, it is convenient and efficient to plug and unplug. The L-shaped elastic buckle with a hemispherical fulcrum protrusion uses the lever principle to achieve "insertion locks, press unlocks". The single plugging and unplugging time is reduced by more than 80% compared to traditional methods, making it suitable for high-frequency maintenance scenarios. The arc-shaped limiting groove limits buckle deformation and avoids permanent damage. Thirdly, it has a stable connection. The guide rib pre-positions to prevent pin wear, the locking groove buffer pad absorbs vibration and reduces noise, and the socket positioning post is interference-fitted with the circuit board to prevent socket displacement caused by equipment vibration. Fourthly, it is highly durable. The nano-coating reduces wear, and the buffer pad and limiting groove extend the life of components while reducing maintenance costs. It is suitable for various scenarios such as home, industrial, and automotive applications. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a quick-plug wire-to-board connector with a foolproof structure according to this utility model; Figure 2This is a schematic diagram of the socket assembly structure of a quick-plug wire-to-board connector with a foolproof structure according to the present invention. Figure 3 This is a schematic diagram of the plug assembly structure of a quick-plug wire-to-board connector with a foolproof structure according to this utility model; Figure 4 This is a perspective structural diagram of a socket assembly for a quick-plug wire-to-board connector with a foolproof structure according to the present invention. Figure 5 This is a perspective structural diagram of the plug assembly of a quick-plug wire-to-board connector with a foolproof structure according to the present invention. Numbering on the map: 1. Socket assembly; 101. Socket housing; 102. Slot; 103. Guide groove; 2. Plug assembly; 201. Plug body; 202. Plug part; 203. Guide rib; 3. Circuit board; 301. Positioning hole; 302. Positioning post; 4. Quick plug-in / plug-out mechanism; 401. Elastic buckle; 402. Locking groove; 403. Buffer pad; 404. Pressing part; 405. Locking hook; 5. Foolproof structure; 501. Foolproof barrier; 502. Foolproof boss. Detailed Implementation

[0014] 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.

[0015] like Figure 1-5 As shown, this utility model provides a quick-plug wire-to-board connector with a foolproof structure 5, including a plug assembly 2 and a socket assembly 1. The socket assembly 1 is fixed on a circuit board 3 and also includes the foolproof structure 5 and a quick-plug mechanism 4. The plug assembly 2 includes a plug body 201 and a plug portion 202 located at its front end. Guide ribs 203 are symmetrically provided on both sides of the plug portion 202. The socket assembly 1 includes a socket housing 101 and a slot 102 for accommodating the plug portion 202. The inner sidewall of the slot 102 is provided with a guide groove 103 that matches the guide rib 203.

[0016] When the plug assembly 2 is inserted into the socket assembly 1, pre-positioning is first achieved through the cooperation of the guide rib 203 and the guide groove 103. The guide ribs 203 on both sides of the plug insertion part 202 are longer than the insertion part 202 and have a chamfer at the front end. In the initial stage of insertion, the guide ribs 203 preferentially slide into the guide groove 103 on the inner side wall of the socket slot 102. The chamfer structure can reduce insertion resistance and avoid the guide rib 203 getting stuck at the edge of the guide groove 103. The design of the guide rib 203 being "longer than the insertion part 202" can limit the left and right displacement of the plug through the guide groove 103 before the insertion part 202 contacts the bottom of the slot 102, ensuring accurate subsequent insertion direction and avoiding pin wear caused by alignment deviation.

[0017] The foolproof structure 5 includes a foolproof protrusion 502 located at the front end of the plug body 201 and a foolproof baffle 501 located at the insertion port of the socket housing 101. The cross-section of the foolproof protrusion 502 is an asymmetrical trapezoid, and the foolproof baffle 501 has a limiting notch that matches the shape of the foolproof protrusion 502.

[0018] The foolproof protrusion 502 at the front end of the plug body 201 has an asymmetrical trapezoidal structure. Only when the plug is inserted in the "correct direction" can the protrusion match the limiting notch of the foolproof barrier 501 at the insertion port of the socket housing 101. If inserted in the opposite direction, the asymmetrical protrusion will be blocked by the non-notch area of ​​the foolproof barrier 501, directly preventing insertion and structurally eliminating short circuits or connector damage caused by reverse connection.

[0019] The quick-plug mechanism 4 includes elastic latches 401 symmetrically arranged on both sides of the socket housing 101, locking grooves 402 arranged on both sides of the plug body 201, and pressing parts 404 arranged on the outside of the elastic latches 401. When pressed, the locking hook 405 is driven to disengage from the locking groove 402. When the pressing part 404 is pressed, the locking hook 405 is driven to move outward with the fulcrum protrusion as the pivot. The elastic latches 401 are provided with locking hooks 405, which can be engaged in the locking grooves 402.

[0020] During plug insertion, the L-shaped elastic buckles 401 on both sides of the socket housing (fixed at the base to the socket housing 101) will deform outward due to the compression of the plug body 201. When the plug is fully inserted (the plug part 202 abuts against the bottom of the slot 102), the locking hooks 405 are aligned with the locking grooves 402 on both sides of the plug body 201. The elastic buckles 401 return to their original shape, and the locking hooks 405 automatically engage with the locking grooves 402, completing the connection and locking. No additional twisting or pressing is required, achieving a quick connection of "insertion and locking".

[0021] When disconnection is required, simply press the pressing part 404 of the elastic buckle 401 on both sides of the socket: the pressing force is converted into the outward movement force of the locking hook 405 through the fulcrum protrusion, causing the locking hook 405 to disengage from the locking groove 402 of the plug. At this time, the plug can be pulled out directly. The entire unlocking process does not require tools, realizing quick disconnection with "press to unlock", which is suitable for high-frequency plugging and unplugging scenarios.

[0022] Furthermore, a guide slope is provided between the anti-foolproof protrusion 502 and the anti-foolproof barrier 501. When the plug assembly 2 is inserted in the correct direction, the guide slope guides the anti-foolproof protrusion 502 to slide into the limiting notch.

[0023] A guide slope is provided between the foolproof boss 502 and the foolproof retaining wall 501, and the slope angle is optimized to 30°-45° (if the angle is too small, the guiding force will be insufficient, and if the angle is too large, the boss will easily get stuck); at the same time, the surface of the slope is coated with a nano-coating, which can significantly reduce the sliding friction between the boss and the retaining wall. When inserted, the guide slope can actively "guide" the foolproof boss 502 to slide into the limiting notch, realizing "smooth insertion upon alignment", without the need to manually adjust the angle, thus improving the ease of operation.

[0024] By combining the asymmetric trapezoidal anti-foolproof boss 502 with the limiting notch, reverse insertion is completely prevented from the physical structure, avoiding faults such as connector pin bending and circuit board 3 short circuit caused by misoperation. It is especially suitable for non-professional operation scenarios (such as home equipment and office equipment), reducing the threshold for use and maintenance costs.

[0025] Furthermore, the elastic buckle 401 is an L-shaped spring piece, the root of the elastic buckle 401 is fixed to the socket housing 101, and the middle part of the elastic buckle 401 is provided with a fulcrum protrusion.

[0026] The elastic buckle 401 has a hemispherical fulcrum protrusion in the middle. In the locked state, the fulcrum protrusion fits against the socket housing 101. When pulling out, pressing the pressing part 404 can pivot the fulcrum protrusion to drive the locking hook 405 outward, using the lever principle to save effort and avoid the laborious operation caused by directly prying the buckle. The L-shaped buckle with the fulcrum protrusion makes pressing effortless, and it can be pulled out directly after unlocking. The single insertion and removal operation time is reduced by more than 80% compared with traditional threaded fixed connectors, making it suitable for high-frequency insertion and removal scenarios such as frequent equipment maintenance and temporary wiring.

[0027] Furthermore, a buffer pad 403 is provided inside the locking groove 402, and the locking hook 405 makes elastic contact with the buffer pad 403 when it is engaged. The buffer pad 403 inside the locking groove 402 forms an elastic contact when the locking hook 405 is engaged, which can absorb the impact force caused by equipment vibration, prevent the locking hook 405 from loosening due to rigid collision with the locking groove 402, and reduce the collision noise during locking, ensuring stable connection and no fluctuation in contact resistance under long-term vibration environment (such as industrial equipment and automotive electronics).

[0028] Furthermore, the guide rib 203 is longer than the insertion part 202, and the front end of the guide rib 203 is chamfered. During insertion, it preferentially enters the guide groove 103 to achieve pre-positioning. The pre-positioning of the guide rib 203 and the guidance of the inclined surface eliminate the need for repeated alignment, resulting in low insertion resistance; during locking, the elastic buckle 401 automatically engages, requiring no additional fixing steps.

[0029] Furthermore, the socket housing 101 has a positioning post 302 at its bottom, and the circuit board 3 has a corresponding positioning hole 301. The positioning post 302 and the positioning hole 301 are interference-fitted. The socket assembly 1 is fixed to the circuit board 3 by the interference fit between the positioning post 302 and the circuit board 3: the positioning post 302 at the bottom of the socket housing 101 is inserted into the corresponding positioning hole 301 of the circuit board 3. The interference fit structure can eliminate the gap between the positioning post 302 and the positioning hole 301, preventing the socket from shifting on the circuit board 3 due to vibration during equipment operation, ensuring that the connection position between the socket and the plug is always accurate, and preventing poor contact caused by socket displacement.

[0030] Furthermore, the guide slope has an inclination angle of 30°-45°, and its surface is coated with a nano-coating to reduce friction. This nano-coating reduces sliding wear, and the mating surface between the anti-misplacement boss 502 and the baffle is less prone to scratches from repeated insertions and removals, thus extending the effective service life of the anti-misplacement structure 5.

[0031] Furthermore, the fulcrum protrusion has a hemispherical structure, and the socket housing 101 has an arc-shaped limiting groove at the position corresponding to the fulcrum protrusion to limit the deformation stroke of the elastic buckle 401. The arc-shaped limiting groove at the position corresponding to the fulcrum protrusion limits the maximum deformation stroke of the elastic buckle 401, preventing excessive bending and permanent deformation during pressing, thus extending the buckle's service life. The arc-shaped limiting groove limits the deformation stroke of the elastic buckle 401, preventing damage from excessive bending.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A quick-plug wire-to-board connector with a foolproof structure, comprising a plug assembly and a socket assembly, wherein the socket assembly is fixed to a circuit board, characterized in that: It also includes a foolproof structure and a quick plug-in / plug-out mechanism. The plug assembly includes a plug body and a plug portion located at its front end. Guide ribs are symmetrically provided on both sides of the plug portion. The socket assembly includes a socket housing and a slot for accommodating the plug portion. The inner wall of the slot is provided with a guide groove that matches the guide ribs. The anti-mistake structure includes an anti-mistake protrusion at the front end of the plug body and an anti-mistake barrier at the insertion port of the socket housing. The cross-section of the anti-mistake protrusion is an asymmetrical trapezoid, and the anti-mistake barrier has a limiting notch that matches the shape of the anti-mistake protrusion. The quick plug-in / plug-out mechanism includes elastic buckles symmetrically arranged on both sides of the socket housing, locking grooves arranged on both sides of the plug body, and pressing parts arranged on the outside of the elastic buckles. The elastic buckles are provided with locking hooks, which can be engaged into the locking grooves.

2. The quick-connect wire-to-board connector with a foolproof structure according to claim 1, characterized in that: A guide ramp is provided between the anti-foolproof protrusion and the anti-foolproof barrier. When the plug assembly is inserted in the correct direction, the guide ramp guides the anti-foolproof protrusion to slide into the limiting notch.

3. A quick-connect wire-to-board connector with a foolproof structure according to claim 1, characterized in that: The elastic buckle is an L-shaped spring piece, the base of which is fixed to the socket housing, and a fulcrum protrusion is provided in the middle of the elastic buckle.

4. A quick-connect wire-to-board connector with a foolproof structure according to claim 1, characterized in that: The locking groove is provided with a buffer pad, and the locking hook makes elastic contact with the buffer pad when it is engaged.

5. A quick-plug wire-to-board connector with a foolproof structure according to claim 1, characterized in that: The guide rib is longer than the insertion part, and the front end of the guide rib is chamfered.

6. A quick-plug wire-to-board connector with a foolproof structure according to claim 1, characterized in that: The socket housing has a positioning post at the bottom, and the circuit board has a corresponding positioning hole. The positioning post and the positioning hole are interference-fitted.

7. A quick-plug wire-to-board connector with a foolproof structure according to claim 2, characterized in that: The guide slope has an inclination angle of 30°-45°, and the surface of the guide slope is provided with a nano-coating to reduce friction.

8. A quick-plug wire-to-board connector with a foolproof structure according to claim 3, characterized in that: The fulcrum protrusion is a hemispherical structure, and the socket housing is provided with an arc-shaped limiting groove at the position corresponding to the fulcrum protrusion to limit the deformation stroke of the elastic buckle.

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