A vibration-resistant wire-to-board connector

Abstract

This application provides a vibration-resistant wire-to-board connector, including a first connector, a second connector, and a locking member. The second connector includes a body and a mating cavity located within the body. The second connector is disposed on a PCB board and is mated with the first connector. The locking member is connected to the first opposing surfaces of the first connector, and is located outside the first connector. When the first connector and the second connector are mated, the second connector is located within the mating cavity, and the locking member abuts against the mating cavity along the mating direction. A toothed rack is formed on the second opposing surface of the first connector, which is perpendicular to and adjacent to the first opposing surface of the first connector, and the toothed rack on the second opposing surface is staggered. The above structure achieves vibration resistance for the wire-to-board connector.

Description

Technical Field

[0001] This application relates to the field of connectors, and more particularly to a vibration-resistant wire-to-board connector. Background Technology

[0002] Wire-to-board connectors have a wide range of applications. In consumer electronics, they are used inside mobile phones, tablets, and wearable devices to connect components such as batteries and screens to the motherboard. In automotive electronics, they connect various modules of the engine and body control system. In industrial control, they are used in automated production lines and industrial robots to connect sensors, actuators, and control equipment. In the field of communication equipment, they are used in base stations, routers, and switches to connect different functional modules to ensure signal and power transmission.

[0003] In some applications where vibration occurs, such as in environments with continuous vibrations like car driving or industrial equipment operation, the contact interface of the wire-to-board connector will experience reciprocating sliding displacement. This displacement will significantly reduce conductivity, leading to unreliable long-term contact issues for the connector.

[0004] Therefore, a vibration-resistant wire-to-board connector is needed. Utility Model Content

[0005] In view of this, it is necessary to provide a vibration-resistant wire-to-board connector to solve the above problems.

[0006] Embodiments of this application provide a vibration-resistant wire-to-board connector, comprising:

[0007] First connector;

[0008] The second connector includes a main body and a plug-in cavity located within the main body. The second connector is disposed on a PCB board and is plugged into the first connector.

[0009] A locking member is connected to the first opposing surface of the first connector. The locking member is located outside the first connector. When the first connector and the second connector are inserted, the second connector is located inside the insertion cavity, and the locking member abuts against the insertion cavity along the insertion direction.

[0010] A rack is provided on the second opposing surface of the first connector, which is perpendicular to and adjacent to the first opposing surface of the first connector, and the rack on the second opposing surface is staggered.

[0011] In at least one embodiment of this application, a guide groove is provided in the insertion cavity. The guide groove is arranged along the insertion direction. When the first connector and the second connector are inserted, the rack is completely located in the guide groove and is fitted and connected to the guide groove.

[0012] When the first connector and the second connector are unlocked, the rack changes from being completely located in the guide groove to being partially located in the guide groove, and then to not being located in the guide groove.

[0013] In at least one embodiment of this application, the locking member includes:

[0014] The elastic part has one end connected to the first opposing surface and is parallel to the first opposing surface;

[0015] An undercut portion is provided on the elastic portion and at one end away from the first opposing surface. When the first connector and the second connector are inserted, the undercut portion abuts against the insertion cavity.

[0016] The unlocking part is connected to the other end of the elastic part, and the buckle part is located between the elastic part and the unlocking part;

[0017] When the first connector and the second connector are unlocked, the user presses the unlocking part relative to each other in the direction facing the first opposing surface. The unlocking part causes the elastic part to slide relative to each other in the pressing direction until the buckle on the elastic part does not abut against the insertion cavity.

[0018] In at least one embodiment of this application, a first gap is provided between the locking member and the first opposing surface;

[0019] The wire-to-board connector also includes an opening integrally formed with the first connector;

[0020] A second gap is provided between the first connector and the opening, and the first gap is located between the opening and the locking member.

[0021] In at least one embodiment of this application, the undercut portion includes:

[0022] An inclined surface, connected to the elastic part, is located at one end opposite to the first opposing surface;

[0023] The abutting surface has one end perpendicularly connected to the elastic part and the other end connected to the inclined surface. When the abutting surface abuts against the insertion cavity, it is a planar abutting contact.

[0024] In at least one embodiment of this application, the second connector includes an electrical connection terminal, which is connected to the main body and extends through the insertion cavity;

[0025] The first connector has a connection hole that matches the electrical connection terminal, and the first connector is inserted into the second connector.

[0026] In at least one embodiment of this application, a hollow area is provided in the unlocking part, and the hollow area is disposed adjacent to the first gap.

[0027] In at least one embodiment of this application, the end of the first connector facing away from the second connector is provided with a cable outlet port, and the cable outlet port is connected to the plug hole.

[0028] In at least one embodiment of this application, both the outgoing port and the plug hole are made of metal.

[0029] In at least one embodiment of this application, the outgoing port is configured as a 180° cable outlet.

[0030] The aforementioned vibration-resistant wire-to-board connector uses an outer locking element to abut against the insertion cavity of the second connector after insertion, forming a rigid limit and preventing axial loosening caused by vibration. The first connector has staggered toothed racks on both vertical surfaces. After insertion, the racks tightly engage with the inner wall of the insertion cavity, effectively suppressing displacement and swaying caused by lateral vibration through a multiplied increase in friction area and tooth-valve interlocking effect. Attached Figure Description

[0031] Figure 1 This is a perspective view of the vibration-resistant wire-to-board connector described in this application;

[0032] Figure 2 This is an exploded front view of the vibration-resistant wire-to-board connector described in this application.

[0033] Figure 3 This is an exploded rear view of the vibration-resistant wire-to-board connector described in this application.

[0034] Figure 4 This is a front view of the vibration-resistant wire-to-board connector described in this application;

[0035] Figure 5 for Figure 4 Sectional view of AA;

[0036] Figure 6 for Figure 5 A magnified view of a section at point C;

[0037] Figure 7 This is a top view of the vibration-resistant wire-to-board connector described in this application;

[0038] Figure 8 for Figure 7 Sectional view of BB;

[0039] Explanation of main component symbols

[0040] 100. Vibration-resistant wire-to-board connector; 10. First connector; 11. First opposing surface; 12. Second opposing surface; 13. First gap; 14. Second gap; 15. Connecting hole; 16. Outlet port; 17. Opening; 20. Second connector; 21. Main body; 22. Insertion cavity; 23. Guide groove; 24. Electrical connection terminal; 30. Locking element; 40. Rack; 31. Elastic part; 32. Reverse snap part; 321. Inclined surface; 322. Abutting surface; 33. Unlocking part; 331. Cutout area; F1. Insertion direction. Detailed Implementation

[0041] The embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0042] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or may also have an intervening component. When a component is considered to be "placed" on another component, it can be directly placed on the other component or may also have an intervening component. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "back," and similar expressions used in this article are for illustrative purposes only.

[0043] This application provides a vibration-resistant wire-to-board connector, comprising: a first connector, a second connector, and a locking member. The second connector includes a body and a mating cavity located within the body. The second connector is disposed on a PCB board and is mated with the first connector. The locking member is connected to a first opposing surface of the first connector, and is located outside the first connector. When the first connector and the second connector are mated, the second connector is located within the mating cavity, and the locking member abuts against the mating cavity along the mating direction. A toothed rack is formed on a second opposing surface of the first connector, perpendicular to and adjacent to the first opposing surface, and the toothed rack on the second opposing surface is staggered.

[0044] The aforementioned vibration-resistant wire-to-board connector uses an outer locking element to abut against the insertion cavity of the second connector after insertion, forming a rigid limit and preventing axial loosening caused by vibration. The first connector has staggered toothed racks on both vertical surfaces. After insertion, the racks tightly engage with the inner wall of the insertion cavity, effectively suppressing displacement and swaying caused by lateral vibration through a multiplied increase in friction area and tooth-valve interlocking effect.

[0045] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0046] Please see Figures 1-8 This application provides a vibration-resistant wire-to-board connector 100, comprising: a first connector 10, a second connector 20, and a locking member 30. The second connector 20 includes a body 21 and a insertion cavity 22 located within the body 21. The second connector 20 is disposed on a PCB board and is inserted into the first connector 10. The locking member 30 is connected to the first opposing surface 11 of the first connector 10, and is located outside the first connector 10. When the first connector 10 and the second connector 20 are inserted, the second connector is located within the insertion cavity 22, and the locking member 30 abuts against the insertion cavity 22 along the insertion direction F1. A rack 40 is formed on the second opposing surface 12 of the first connector 10, which is perpendicular to and adjacent to the first opposing surface 11. The rack 40 on the second opposing surface 12 is staggered.

[0047] Specifically, the first connector 10 is a cable end connector, with one end connected to an external cable (not shown), and the other end having a plug-in portion for inserting into the plug-in cavity 22 of the second connector 20. The outer peripheral surface of the plug-in portion has two adjacent surfaces at 90° to each other: a first opposing surface 11 for mounting the locking member 30 and a second opposing surface 12 for mounting the rack 40 structure. The combination of these two adjacent surfaces forms the L-shaped corner portion of the plug-in portion, allowing locking and anti-lateral vibration functions to be simultaneously distributed on surfaces in different directions, without interference, and working together to resist vibration.

[0048] The second connector 20 is disposed on the PCB motherboard. The second connector 20 includes a main body 21 and a plug-in cavity 22 disposed inside the main body 21 and extending along the plugging direction F1. The plug-in cavity 22 is used to receive the plug-in portion of the first connector 10. The second connector 20 is provided with an electrical connection terminal 24 for electrical connection to achieve electrical contact.

[0049] The inner wall of the insertion cavity 22 is provided with a limiting step that abuts against the locking member 30 on the first connector 10, and the outer wall of the insertion cavity 22 is provided with a mating structure for the rack 40 to engage, such as a guide groove 23 and a meshing wall. The insertion cavity 22 enables the first connector 10 to achieve mechanical engagement in multiple directions when inserted, resisting axial and lateral sliding displacement caused by external vibrations.

[0050] Locking members 30 are disposed on the outer side of the first opposing surface 11 of the first connector 10, preferably symmetrically arranged on both sides. Each locking member 30 includes an elastic part 31, a buckle part 32, and an unlocking part 33. One end of the elastic part 31 is connected to the first connector 10, and the other end of the elastic part 31 is free, forming a cantilever beam structure. The buckle part 32 is disposed at the end of the elastic part 31 away from the first opposing surface 11, and the buckle part 32 is shaped as a protruding tongue with an inclined guide surface and a vertical abutment surface 322. The unlocking part 33 is connected to the other end of the elastic part 31, facilitating user pressing to deform the buckle part 32 and disengage it from the limiting step of the insertion cavity 22. In its natural state, the buckle part 32 of the locking member 30 automatically engages with the step structure inside the insertion cavity 22 of the second connector 20, achieving axial anti-retraction and preventing the connector from loosening due to vibration.

[0051] The rigid contact and elastic rebound of the locking element 30 constitute a vibration-resistant locking system that can be repeatedly inserted and removed and can be manually unlocked, maintaining good contact reliability under high-frequency vibration.

[0052] One or more sets of racks 40 are provided on the second opposing surface 12 of the first connector 10, arranged along the insertion direction F1, and the racks 40 protrude from the second opposing surface 12. The racks 40 are staggered, that is, the tooth shape is staggered along the longitudinal direction of the second opposing surface 12 with uneven pitch, forming an "asymmetric meshing" structure. Specifically, the relative positions of the racks 40 can be staggered.

[0053] After the rack 40 is inserted, it engages with the guide groove 23 or the interlocking wall on the inner wall of the insertion cavity 22, forming a high-friction interface with multiple contact points, effectively preventing lateral micro-movements. During micro-movements, the teeth interlock with the inner wall. Even if there is a lateral disturbance, the misaligned arrangement of the rack 40 breaks the symmetrical bouncing characteristics, damping the vibration propagation path.

[0054] The insertion portion of the first connector 10 places the locking member 30 and the rack 40 on the outer surfaces of two adjacent vertical directions, respectively responding to vibrations in different directions, namely axial and circumferential. The locking member 30, through the abutting action of its elastic portion 31, rigidly limits the first connector 10 along the insertion direction F1, i.e., axially, when it is inserted into the second connector 20.

[0055] The rack 40 is embedded in the inner groove of the insertion cavity 22, achieving lateral and circumferential damping by increasing the contact area and interlocking effect. Through the synergistic action of the locking element 30 and the rack 40, bidirectional vibration resistance is achieved, ensuring long-term reliable contact even in high-vibration environments such as vehicle engine compartments and the interior of high-speed industrial equipment.

[0056] The user inserts the first connector 10 into the insertion cavity 22 of the second connector 20. During the insertion process: the undercut portion 32 of the locking member 30 is compressed and slides into the insertion cavity 22. After insertion, the undercut portion 32 automatically springs back and engages with the limiting step to form an axial limit. The rack 40 fits against the mating surface of the inner wall of the insertion cavity 22 to form a lateral limiting structure. After insertion is completed, the electrical terminals also achieve reliable contact.

[0057] When the car engine generates high-frequency vibrations, the inverted structure of the locking element 30 prevents the connector from being pulled out during vibration; the structure of the staggered rack 40 effectively reduces fretting and wear through multiple engagement points, ensuring long-term stable conductivity and undistorted signals.

[0058] When the user needs to disassemble, they can press the unlocking part 33 of the locking member 30: the unlocking part 33 causes the elastic part 31 to shift inward, causing the buckle part 32 to disengage from the limiting step. After unlocking, the first connecting member 10 can be smoothly pulled out without force.

[0059] In one specific embodiment, a guide groove 23 is provided in the insertion cavity 22. The guide groove 23 is arranged along the insertion direction F1. When the first connector 10 and the second connector 20 are inserted, the rack 40 is completely located in the guide groove 23 and is in close contact with the guide groove 23. When the first connector 10 and the second connector 20 are unlocked, the rack 40 changes from being completely located in the guide groove 23 to being partially located in the guide groove 23, and then to not being located in the guide groove 23.

[0060] Specifically, during the insertion process, the insertion direction and position of the first connector 10 are precisely guided. This limits the swaying and deflection of the first connector 10, thereby achieving a vibration-resistant and stable insertion. The guide groove 23 provides an insertion path for the rack 40, forming a "tooth-groove meshing" structure between the rack 40 and the guide groove 23, enhancing structural stability.

[0061] The rack 40 on the first connector 10 enters the guide groove 23 within the insertion cavity 22 of the second connector 20, forming a precise fit. The close contact between the rack 40 and the guide groove 23 eliminates gaps between the connectors after insertion, improving vibration resistance. This prevents the connectors from loosening or making poor contact due to micro-vibrations and enhances the overall structural strength of the connector.

[0062] During unlocking, the rack 40 changes from "fully located in guide groove 23" → "partially located in guide groove 23" → "not located in guide groove 23". Being fully located in guide groove 23 indicates a connected state with a secure structure. Being partially located in guide groove 23 indicates it is being pulled out, still providing some guidance. Being not located in guide groove 23 indicates a disengaged state with the connection broken.

[0063] It can be used with locking element 30 to achieve a step-by-step resistance release structure, providing strong feedback during pull-out and preventing instantaneous disengagement. It achieves a controllable insertion / extraction force curve, improving operational safety; it also helps identify whether the connection is fully inserted / locked. This extends connector lifespan, reduces wear, and is suitable for industrial equipment with frequent mating and unplugging.

[0064] In one specific embodiment, the locking member 30 includes an elastic portion 31, a buckle portion 32, and an unlocking portion 33. One end of the elastic portion 31 is connected to the first opposing surface 11, and the elastic portion 31 is parallel to the first opposing surface 11. The buckle portion 32 is disposed on the elastic portion 31, and the buckle portion 32 is located at the end opposite to the first opposing surface 11. When the first connector 10 and the second connector 20 are inserted, the buckle portion 32 abuts against the insertion cavity 22. The unlocking portion 33 is connected to the other end of the elastic portion 31, and the buckle portion 32 is located between the elastic portion 31 and the unlocking portion 33. When the first connector 10 and the second connector 20 are unlocked, the user presses the unlocking portion 33 relative to the first opposing surface 11 in the direction opposite to the unlocking portion 33. The unlocking portion 33 causes the elastic portion 31 to slide relative to the user in the pressing direction until the buckle portion 32 on the elastic portion 31 does not abut against the insertion cavity 22.

[0065] Specifically, the elastic part 31 is typically a leaf spring-like or strip-like structure, made of PBT, PA66 reinforced plastic, or elastic metal material. The elastic part 31 is located on the outside of the first connector 10 and can elastically deform under external force. The elastic part 31 provides elastic preload during locking. In the non-operating state, it automatically presses the undercut part 32 against the insertion cavity 22 structure, achieving "self-locking." The elastic part 31 ensures the connector's vibration resistance and anti-loosening performance during long-term use.

[0066] The snap-fit ​​portion 32 is located at the end of the elastic portion 31 away from the first opposing surface 11, at the "free end" of the elastic arm. During insertion, the snap-fit ​​portion 32 automatically slides into the insertion cavity 22 and abuts against the edge / stop portion of the insertion cavity 22 in the locked position. The snap-fit ​​portion 32 provides physical limitation, realizing "locking confirmation" of insertion. The abutting fit enhances the structural tightness and prevents the connector from loosening due to external vibration.

[0067] The shape of the inverted part 32 is preferably a wedge / hook structure, which facilitates smooth insertion but is limited and blocked by the insertion cavity 22 when pulled out in the reverse direction.

[0068] The unlocking part 33 is integrally connected to or integrally formed with the elastic part 31, and is located at the other end of the elastic part 31. The unlocking part 33 is the user operation area, suitable for finger pressing; the unlocking part 33 can be designed as a partial protrusion, a button, or have a groove to enhance the tactile feel.

[0069] Under user operation, the unlocking part 33 causes the entire elastic part 31 to shift. This releases the contact between the snap-fit ​​part 32 and the insertion cavity 22, thus unlocking and removing the connector.

[0070] After insertion, the inverted part 32 abuts against the insertion cavity 22, achieving a locking mechanism. The user presses the unlocking part 33 from the direction facing the first opposing surface 11. The unlocking part 33 pushes the elastic part 31 to bend or slide as a whole. The inverted part 32 changes from the abutting state to the disengaged state. The first connector 10 can then be safely pulled out relative to the second connector 20.

[0071] In one specific embodiment, a first gap 13 is provided between the locking member 30 and the first opposing surface 11. The wire-to-board connector also includes an opening 17 integrally formed with the first connector 10. A second gap 14 is provided between the first connector 10 and the opening 17, and the first gap 13 is located between the opening 17 and the locking member 30.

[0072] Specifically, during the molding design, the locking member 30 is suspended during injection molding, and is spaced apart from but partially connected to the first connecting member 10. The locking member 30 can be a "cantilever structure" or a "bridge structure" connected to the first connecting member 10.

[0073] The first gap 13 provides space for the elastic deformation of the elastic part 31, preventing it from being stuck and unable to bend / compress. The first gap 13 improves the response speed and tactile feedback of the unlocking part 33 when pressed. The first gap 13 enhances the automatic spring-back effect of the snap-fit ​​part 32 during insertion. The first gap 13 provides a buffer space to prevent long-term stress concentration from causing plastic fatigue cracking.

[0074] The opening 17 is a recessed area / hollowed-out area 331 / through hole structure provided on the outer shell of the first connector 10. The opening 17 is integrally injection molded with the first connector 10, that is, it is formed directly in a one-time molding process without the need for post-processing.

[0075] The opening 17 can be a narrow, elongated window. It is usually located near the locking member 30 to facilitate the formation of a flexible structure. The opening 17 reduces the local structural rigidity of the locking member 30, making the flexible part 31 more prone to deformation.

[0076] The second gap 14 is the spatial dimension of the opening 17, which is a structural "give way space" relative to the first connector 10. The first gap 13 can be a gap for the movement of the locking member 30, or it can be a range for the movement of the plastic elastic member.

[0077] The second gap 14 is located on the outside of the housing, or it can be embedded inside the connector structure. It can be preset as a flexible rotation angle range or a sliding channel. The second gap 14 works in conjunction with the first gap 13 to give the locking member 30 greater elastic deformation. When unlocking, the elastic part 31 presses into the area of ​​the second gap 14, causing the inverted part 32 to retract. This avoids the locking member 30 structure being restricted by the housing, reducing accidental locking or jamming. It also provides reaction space for user pressing, making the operation feel more precise.

[0078] The first gap 13 is neither located below the opening 17 body nor directly below the unlocking part 33, but is located between the opening 17 and the locking member 30, that is, below the structural connection point; in fact, the first gap 13 is the movable cavity when the base of the elastic part 31 moves.

[0079] In one specific embodiment, the undercut portion 32 includes an inclined surface 321 and an abutting surface 322. The inclined surface 321 is connected to the elastic portion 31 and is located at one end opposite to the first opposing surface 11. One end of the abutting surface 322 is perpendicularly connected to the elastic portion 31, and the other end of the abutting surface 322 is connected to the inclined surface 321. When the abutting surface 322 abuts against the insertion cavity 22, it is a planar abutment.

[0080] Specifically, the inclined surface 321 is provided on the side of the buckle portion 32 facing the insertion direction F1. One end of the inclined surface 321 is connected to the elastic portion 31, and the other end of the inclined surface 321 transitions to the abutment surface 322.

[0081] The inclined surface 321 is located at the leading edge of the undercut portion 32 and is the part that first contacts the guide surface of the mating cavity 22 when the connector is inserted. The inclined surface 321 is usually designed with an incline of 10° to 30°. The inclined surface 321 and the elastic portion 31 have a smooth transition, such as a rounded corner or R-angle design.

[0082] The inclined surface 321 provides a guiding function, causing the inverted part 32 to bend under force during insertion, avoiding damage to the structure from hard insertion. This achieves an automatic locking process of "inclined sliding in + spring-loaded latch." It reduces insertion force and improves the user's insertion feel; the elastic bending effectively avoids the edge of the insertion cavity 22, enhancing tolerance to errors.

[0083] The snap-fit ​​portion 32 includes an abutment surface 322. One end of the abutment surface 322 is perpendicularly connected to the elastic portion 31, and the other end of the abutment surface 322 is connected to the inclined surface 321. The abutment surface 322 is the "contact interface" that contacts the insertion cavity 22 when the snap-fit ​​portion 32 is locked. It is usually a surface that is approximately perpendicular to the insertion direction and serves as a backstop and protection function.

[0084] After insertion, the abutment surface 322 and the limiting surface of the insertion cavity 22 form a planar abutment, providing a vertical limiting effect. The abutment is a surface contact, which helps to disperse stress and improve vibration resistance. It prevents the undercut part 32 from coming out of the limiting groove due to vibration or impact.

[0085] When the abutting surface 322 abuts against the insertion cavity 22, it is a planar abutment. Planar contact provides a larger friction surface, enhancing the connection stability. This effectively avoids structural fatigue or plastic indentation caused by localized stress concentration.

[0086] In one specific embodiment, the second connector 20 includes an electrical connection terminal 24, which is connected to the main body 21 and extends through the insertion cavity 22. The first connector 10 has a connection hole 15 that matches the electrical connection terminal 24, and the first connector 10 is inserted into the second connector 20.

[0087] Specifically, the electrical connection terminal 24 is a conductive component disposed in the second connector 20. Its electrical function is to lead out the motherboard electrical signals and transmit them to the cable end after connecting with the first connector 10. The electrical connection terminal 24 can adopt structures such as pins, metal springs, and leaf spring contacts. The material is selected as copper alloy (such as phosphor bronze or brass) and plated with tin or gold to improve conductivity and corrosion resistance. This ensures that the connector not only achieves mechanical positioning and vibration resistance but also reliable electrical conduction.

[0088] The electrical connection terminal 24 is a fixed, non-movable structure that is fixedly connected to the main body 21 of the second connector 20. This ensures the structural stability and precise positioning of the electrical connection terminal 24. Typically, the terminal is embedded into the main body 21 using injection molding, such as PA or PBT injection molding materials. Alternatively, the terminal can be securely fixed to the main body 21 using press-fitting, riveting, or other methods.

[0089] Ensure that the electrical connection terminal 24 does not deform or shift during insertion and removal. Improve the durability of the electrical connection point and prevent fretting wear.

[0090] The spatial position of the electrical connection terminal 24, that is, its penetration into the interior of the insertion cavity 22, means that the insertion action is not limited to mechanical locking, but also includes electrical contact action. The front end of the terminal extends into the bottom or sides of the insertion cavity 22, and the portion exposed inside the insertion cavity 22 directly contacts the connection hole 15. It is usually designed as a PIN protrusion type, a spring elastic contact type, etc.

[0091] This ensures that the connecting hole 15 directly engages or presses against the terminal during the mating process, effectively completing the electrical connection. It avoids poor conductivity due to mating errors. This facilitates the implementation of "blind mating structures" or automated mating processes.

[0092] The first connector 10 has a connection hole 15 that matches the electrical connection terminal 24. The connection hole 15 is a through hole or blind hole for sleeve, snap-fit ​​or press-fit the electrical connection terminal 24.

[0093] A metal sleeve or elastic insert is provided inside the connection hole 15 to form an elastic crimping structure. Alternatively, a uniform diameter through-hole can be used, with the end of the connecting cable welded to the inner end of the connection hole 15.

[0094] The insertion process includes tilting and guiding, inverting and avoiding, full insertion, locking with locking element 30, and inserting electrical terminal into connection hole 15;

[0095] In one specific embodiment, the unlocking part 33 has a hollow area 331, which is disposed adjacent to the first gap 13.

[0096] Specifically, the unlocking part 33 is a structural area that can be pressed, flicked, or bent, and usually serves as a trigger mechanism for the connector to disengage. The hollow area 331 is a hollow structure formed by removing part of the material, such as an elongated hole, a rectangular hole, or a round hole.

[0097] The hollow structure is directly formed through injection molding; its location can be in the bending area, the center of the pressure point, or the raised part of the unlocking part 33. In this embodiment, it is the center of the pressure point.

[0098] The perforation pattern can be "single hole", "symmetrical hole" or "grid-shaped hole" to balance elasticity and strength.

[0099] The hollowed-out area reduces the overall rigidity of the unlocking part 33 by removing excess material, making it easier to deform under small forces. The hollowed-out structure reduces the thickness and inertia of the load-bearing area, improving pressing sensitivity. The hollowed-out design releases localized stress concentration, extending the service life of the plastic unlocking component. For multi-pin connectors, the hollowed-out structure effectively reduces weight and improves overall heat dissipation efficiency.

[0100] In one specific embodiment, the first connector 10 has a cable outlet port 16 at the end opposite to the second connector 20, and the cable outlet port 16 is connected to the plug hole.

[0101] Specifically, the first connector 10 is a plug end with an internal insertion hole for accommodating the terminal that is plugged into the second connector 20. The opposite direction is the end that is plugged in the opposite direction, which is usually the direction in which the cable is introduced. A dedicated "outlet port 16" is provided at this end for the cable to pass through or be secured.

[0102] The outlet port 16 can be a circular hole, an elliptical hole, a transverse elongated hole for multi-core wires, or a sheathed slot structure, any of the above structures.

[0103] In one specific embodiment, both the outgoing port 16 and the plug hole are made of metal.

[0104] Specifically, the cable outlet port 16 is made of metal, or has a metal fitting such as a metal ring or metal conduit embedded in its lining. The body of the cable outlet port 16 is a precision stamped part of aluminum alloy or stainless steel, or a copper alloy bushing is embedded in the plastic body 21 for encapsulation, or a metal wire clamping ring or locking ring is provided at the external contact point with the cable.

[0105] The insertion hole is equipped with a metal insertion guide sleeve, such as a copper alloy die-casting part, or may adopt a double-layer structure: an outer plastic insulating shell and an inner metal insertion layer. The metal insertion hole is integrally or crimped with the conductive terminal in the first connector 10.

[0106] In one specific embodiment, the outgoing port 16 is configured as a 180° cable outgoing port.

[0107] Specifically, the cable exit direction and the connector insertion / removal direction should be coaxial and straight.

[0108] Therefore, the aforementioned vibration-resistant wire-to-board connector 100, after insertion, abuts against the insertion cavity 22 of the second connector 20 via the outer locking member 30, forming a rigid limit and preventing axial loosening caused by vibration. The first connector has staggered toothed racks 40 on both vertical surfaces. After insertion, the toothed racks 40 tightly engage with the inner wall of the insertion cavity 22, effectively suppressing displacement and shaking caused by lateral vibration through a multiplied increase in friction area and tooth-valve interlocking effect.

[0109] The above description is merely an embodiment of this application. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this application, but these improvements all fall within the protection scope of this application.

Claims

1. A vibration-resistant wire-to-board connector characterized by comprising: include: First connector; The second connector includes a main body and a plug-in cavity located within the main body. The second connector is disposed on a PCB board and is plugged into the first connector. A locking member is connected to the first opposing surface of the first connector. The locking member is located outside the first connector. When the first connector and the second connector are inserted, the second connector is located inside the insertion cavity, and the locking member abuts against the insertion cavity along the insertion direction. A rack is provided on the second opposing surface of the first connector, which is perpendicular to and adjacent to the first opposing surface of the first connector, and the rack on the second opposing surface is staggered.

2. The vibration-resistant wire-to-board connector according to claim 1, characterized in that, The insertion cavity is provided with a guide groove, which is arranged along the insertion direction. When the first connector and the second connector are inserted, the rack is completely located in the guide groove and is fitted and connected to the guide groove. When the first connector and the second connector are unlocked, the rack changes from being completely located in the guide groove to being partially located in the guide groove, and then to not being located in the guide groove.

3. The vibration-resistant wire-to-board connector according to claim 1, characterized in that, The locking element includes: The elastic part has one end connected to the first opposing surface and is parallel to the first opposing surface; An undercut portion is provided on the elastic portion and at one end away from the first opposing surface. When the first connector and the second connector are inserted, the undercut portion abuts against the insertion cavity. The unlocking part is connected to the other end of the elastic part, and the buckle part is located between the elastic part and the unlocking part; When the first connector and the second connector are unlocked, the user presses the unlocking part relative to each other in the direction facing the first opposing surface. The unlocking part causes the elastic part to slide relative to each other in the pressing direction until the buckle on the elastic part does not abut against the insertion cavity.

4. The vibration-resistant wire-to-board connector according to claim 3, characterized in that, A first gap is provided between the locking member and the first opposing surface; The wire-to-board connector also includes an opening integrally formed with the first connector; A second gap is provided between the first connector and the opening, and the first gap is located between the opening and the locking member.

5. The vibration-resistant wire-to-board connector according to claim 3, characterized in that, The undercut portion includes: An inclined surface, connected to the elastic part, is located at one end opposite to the first opposing surface; The abutting surface has one end perpendicularly connected to the elastic part and the other end connected to the inclined surface. When the abutting surface abuts against the insertion cavity, it is a planar abutting contact.

6. The vibration-resistant wire-to-board connector according to claim 1, characterized in that, The second connector includes an electrical connection terminal, which is connected to the main body and extends through the insertion cavity; The first connector has a connection hole that matches the electrical connection terminal, and the first connector is inserted into the second connector.

7. The vibration-resistant wire-to-board connector according to claim 4, characterized in that, The unlocking part has a hollow area, which is adjacent to the first gap.

8. The vibration-resistant wire-to-board connector according to claim 1, characterized in that, The first connector has a cable outlet at the end opposite to the second connector, and the cable outlet is connected to the plug hole.

9. The vibration-resistant wire-to-board connector according to claim 8, characterized in that, Both the outgoing port and the plug hole are made of metal.

10. The vibration-resistant wire-to-board connector according to claim 8, characterized in that, The outgoing port is set as a 180° cable outlet.

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