A locking structure of a connector

Abstract

The application relates to the technical field of connectors, in particular to a locking structure of a connector, which comprises a plug, a lower end of the plug being inserted into a socket; a lock frame, which is in a U-shaped structure, two vertical parts of the lock frame being installed on the front end of the socket, the front end of the lock frame being concave to form a through groove, and the through groove extending to the inner wall of the lock frame; a switch lock, which is in a U-shaped structure, the rear vertical part of the switch lock being arranged at the lower end of the shell part of the plug, the front vertical part of the switch lock being provided with an auxiliary piece at the upper end, and the auxiliary piece being arranged in an inclined manner with the lower end being lower than the upper end; a fastener, which is arranged at the front end of the switch lock and is clamped in the through groove; a pushing piece, which is slidingly connected at the front end of the plug; and a rectangular cylinder, which is arranged at the lower end of the pushing piece, and the upper end of the auxiliary piece extends into the rectangular cylinder, so that the switch lock and the auxiliary piece are protected in a hidden mode, and the phenomenon of accidental touch is effectively prevented.

Description

Technical Field

[0001] This invention relates to a locking structure for a connector, belonging to the field of connector technology. Background Technology

[0002] Connectors, also known as plugs or connectors, are common electrical connection devices mainly used to connect two sets of active devices to achieve stable transmission of current or signals. Existing connectors mainly consist of two parts: a plug and a socket, which are assembled and connected by plugging.

[0003] To ensure the reliability of the plug-in connection, the industry generally uses a locking structure to lock and limit the plug-in state. This locking structure typically includes a snap-fit ​​and a retainer, with the snap-fit ​​assembled on the plug housing and the retainer fixed to the end of the socket. After the plug and socket are plugged in, the snap-fit ​​and retainer engage to lock the structure and prevent the plug from coming loose.

[0004] However, the existing structure has obvious defects: the operating part of the latch is completely exposed without any shielding or protective structure. Under accidental force such as external impact, scratch, or accidental contact, it is very easy for the latch to loosen, causing connection failure and affecting the stability of device power supply and signal transmission. Summary of the Invention

[0005] To address the problems in the prior art, the present invention provides a locking structure for a connector.

[0006] The technical solution adopted by this invention to solve its technical problem is: A locking structure for a connector, comprising: A plug, the lower end of which is inserted into a socket; The lock frame has a U-shaped structure. Both vertical parts of the lock frame are installed on the front end of the socket. The front end of the lock frame is recessed to form a through groove, which extends to the inner wall of the lock frame. The switch latch has a U-shaped structure. The rear vertical part of the switch latch is located at the lower end of the housing of the plug, and the lower end of the switch latch extends into the lock frame. An auxiliary piece is installed at the upper end of the front vertical part of the switch latch, and the auxiliary piece is arranged at an angle with the lower end lower and the upper end higher. The auxiliary piece and the switch latch are integrated into one structure. A fastener is provided at the front end of the switch latch, and the fastener is engaged in the through groove; The pusher component is slidably connected to the front end of the plug; A rectangular tube is disposed at the lower end of the pusher, and the auxiliary piece extends into the rectangular tube from the rear opening of the rectangular tube, with the rectangular tube located on the upper side of the lock frame.

[0007] Furthermore, the pushing member includes a push plate, which is attached to the front end of the housing portion of the plug. The front end of the housing portion of the plug is recessed to form a guide groove, and the guide groove extends to the lower end of the housing portion of the plug. The cross-section of the guide groove is inverted T-shaped. A slider is slidably connected in the guide groove, and the cross-section of the slider is inverted T-shaped. The lower end of the slider is connected to the upper end of the rectangular tube, and the upper end of the rectangular tube is connected to the push plate.

[0008] Furthermore, a locking spring is provided at the upper end of the slider, and the locking spring has a U-shaped structure, with the upper end of the locking spring connected to the top of the inner side of the slide groove.

[0009] Furthermore, multiple protrusions are equidistantly installed on the front end of the push plate, and the front end of the rectangular tube is recessed to form an arrow groove, with the arrow groove pointing upwards.

[0010] Furthermore, the fastener includes two fixing blocks, which are symmetrically installed at the front end of the switch latch. The cross-section of the fixing blocks is trapezoidal with a narrow bottom and a wide top. The upper ends of the two fixing blocks are in contact with the top of the through groove. The inner end faces of the two fixing blocks are recessed outward to form mounting grooves. A hollow rod is provided between the two mounting grooves, and the left and right ends of the hollow rod extend into the two mounting grooves respectively. Two elastic elements are symmetrically installed on the annular end of the hollow rod, and the other ends of the two elastic elements are connected to the inner walls of the two mounting grooves respectively. A movable block is provided on the annular end of the hollow rod, and the movable block is located between the two fixing blocks. The movable block has a triangular cross-section and extends out of the front side of the fixing blocks.

[0011] Furthermore, the inner end faces of the two fixed blocks are recessed outward to form arc-shaped grooves, and the arc-shaped grooves are located on the lower side of the mounting groove. The left and right ends of the movable block are each equipped with a cylinder, and the two cylinders are slidably connected to the two arc-shaped grooves respectively.

[0012] Furthermore, both of the fixed blocks have concave grooves on their outward-facing end faces. Extrusion strips are slidably connected within both grooves, and the extrusion strips extend outward from the grooves. The two extrusion strips are respectively extruded and fitted onto the left and right walls of the through groove. The inward-facing ends of both extrusion strips are rotatably connected to round rods. The inward-facing ends of the two round rods pass through the two fixed blocks and extend into the hollow rod. Nuts are embedded in the inward-facing walls of both grooves, and the two nuts are respectively threaded onto the annular ends of the two round rods. The round rods are connected to the hollow rods through a limiting component.

[0013] Furthermore, the limiting component includes multiple slide bars, which are equidistantly installed on the inner wall of the hollow rod and arranged along the length of the hollow rod. The annular end faces of the two round rods are concave inward to form sliding grooves, which extend to the inner end of the round rods. The sliding grooves are located on the inner side of the nut. The left and right ends of the slide bars extend into the corresponding sliding grooves in the two round rods, and the slide bars are slidably connected to the sliding grooves.

[0014] The beneficial effects of this invention are: The auxiliary piece is pushed backward by the push plate, slider, guide groove, and rectangular tube, and the switch latch is deformed backward to generate elastic force. Then, the plug is inserted into the socket, and the switch latch and fastener are inserted into the lock frame. When the plug and socket are fully inserted, the slider and rectangular tube move down to their original positions under the elastic force of the locking spring, releasing the pressure on the auxiliary piece. The fastener is then engaged in the through groove. The lock frame, through groove, switch latch, and fastener lock the plug and socket together. At this time, the locking spring applies downward pressure to the slider and rectangular tube, and the rectangular tube applies downward pressure to the auxiliary piece, thereby providing locking force to the switch latch and improving the switch latch's vibration resistance. All movement trajectories of the auxiliary piece and switch latch are within the rectangular tube and lock frame, achieving concealed protection for the switch latch and auxiliary piece, effectively preventing accidental activation. Attached Figure Description

[0015] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the locking structure of a connector according to the present invention; Figure 2 This is a cross-sectional view of the locking structure of a connector according to the present invention; Figure 3 This is a perspective view of the plug in the locking structure of a connector according to the present invention; Figure 4 This is a perspective view of the socket in the locking structure of a connector according to the present invention; Figure 5 This is a perspective view of the rectangular tube in the locking structure of a connector according to the present invention; Figure 6 This is a perspective view of the locking spring in the locking structure of a connector according to the present invention; Figure 7 This is a perspective view of the switch latch in the latching structure of a connector according to the present invention; Figure 8 for Figure 7 Enlarged view of section A in the middle; Figure 9 This is a cross-sectional view of the movable block in the locking structure of a connector according to the present invention; Figure 10 This is a perspective view of the hollow rod in the locking structure of a connector according to the present invention; Figure 11 This is a cross-sectional view of the round rod in the locking structure of a connector according to the present invention.

[0016] In the picture: 1. Plug; 11. Guide groove; 2. Socket; 3. Locking frame; 31. Through slot; 4. Fastener; 41. Fixing block; 42. Movable block; 421. Cylinder; 43. Groove; 44. Extrusion strip; 45. Arc groove; 46. Hollow rod; 461. Sliding bar; 47. Elastic element; 48. Nut; 49. Round rod; 491. Sliding groove; 5. Rectangular tube; 51. Push plate; 52. Slider; 6. Switch latch; 61. Auxiliary piece; 7. Locking spring. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0018] Example 1: As Figures 1-7 As shown, a locking structure for a connector is provided, including: a plug 1 and a socket 2 inserted into the lower end of the plug 1. The two vertical parts of the U-shaped locking frame 3 are installed on the front end of the socket 2. The locking frame 3 hides the switch latch 6 on one hand and provides a processing carrier for the through groove 31 on the other hand. The through groove 31 is recessed in the rearward face of the front end of the locking frame 3 and extends to the inner wall of the locking frame 3. The through groove 31 provides working space for the fastener 4. The rear vertical part of the U-shaped switch latch 6 is located at the lower end of the housing of the plug 1, and the lower end of the switch latch 6 extends into the lock frame 3. The switch latch 6 provides an installation carrier for components such as the fastener 4. The auxiliary piece 61, which is arranged at an angle with a lower bottom and a higher top, is installed on the upper end of the front vertical part of the switch latch 6. The auxiliary piece 61 and the switch latch 6 are integrated. The switch latch 6 is pressed down through the auxiliary piece 61. The fastener 4, which is locked in the through groove 31, is set on the front end of the switch latch 6. The fastener 4 works with the through groove 31 to restrict the lock frame 3. The push plate 51 is attached to the front end of the housing part of the plug 1. Multiple protrusions are installed at equal intervals on the front end of the push plate 51. The push plate 51 works with the multiple protrusions to provide a carrier for the pushing operation. A guide groove 11 is formed by recessing the front end of the housing part of the plug 1 to the rear. The guide groove 11 extends to the lower end of the housing part of the plug 1. The cross-section of the guide groove 11 is inverted T-shaped. The guide groove 11 provides sliding space for the slider 52. The slider 52, with an inverted T-shaped cross section, is slidably connected in the guide groove 11. The slider 52 provides a mounting carrier for components such as the push plate 51, and cooperates with the guide groove 11 to guide the movement of the push plate 51. The locking spring 7, with a U-shaped structure, is set on the upper end of the slider 52. The upper end of the locking spring 7 is connected to the top of the inner side of the slide groove 491. The slider 52 is returned to its original position through the locking spring 7. The lower end of the slider 52 is connected to the upper end of the rectangular tube 5, and the upper end of the rectangular tube 5 is connected to the push plate. The auxiliary piece 61 extends from the rear opening of the rectangular tube 5 into the rectangular tube 5. The rectangular tube 5 is located on the upper side of the lock frame 3. The rectangular tube 5 hides the auxiliary piece 61 on the one hand, and squeezes the auxiliary piece 61 on the other hand. An arrow groove is formed by the rearward recess at the front end of the rectangular tube 5, and the arrow groove points upward. The arrow groove is used to indicate the unlocking direction.

[0019] During connection, push the push plate 51 upward first, so that the slider 52 moves upward along the guide groove 11 and contracts the locking spring 7, so that the locking spring 7 generates elastic force. At the same time, the upward movement of the slider 52 will cause the rectangular tube 5 to move upward and the auxiliary piece 61 to be pressed backward, so that the switch latch 6 contracts backward and generates elastic force, thereby causing the fastener 4 to move backward. Then, insert the plug 1 into the socket 2. During the insertion process, the switch latch 6 and the fastener 4 will be inserted into the lock frame 3. After the plug 1 and the socket 2 are fully inserted, release the push plate 51. Under the elastic force of the locking spring 7, the slider 52 and the rectangular tube 5 will move down to return to their original positions and release the pressure on the auxiliary plate 61. The switch latch 6 will recover its elasticity, causing the fastener 4 to engage in the through groove 31. The locking frame 3, through groove 31, switch latch 6, and fastener 4 lock the plug 1 and socket 2 together. At this time, the locking spring 7 will apply downward pressure to the slider 52 and the rectangular tube 5. The rectangular tube 5 will exert downward pressure on the auxiliary piece 61, thereby providing locking force to the switch latch 6 and improving the vibration resistance of the switch latch 6. All the movement trajectories of the auxiliary piece 61 and the switch latch 6 are located within the rectangular tube 5 and the locking frame 3, achieving hidden protection for the switch latch 6 and the auxiliary piece 61, effectively preventing accidental activation.

[0020] Example 2: Figure 1 , Figure 2 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11As shown, the fastener 4 includes two fixed blocks 41, a movable block 42, a hollow rod 46, two round rods 49, two elastic elements 47, and two extrusion strips 44. The two fixed blocks 41, which have a trapezoidal cross-section that is narrow at the bottom and wide at the top, are symmetrically installed at the front end of the switch latch 6. The upper ends of the two fixed blocks 41 are in contact with the top of the inside of the through groove 31. The two fixed blocks 41 are used in conjunction with the through groove 31 to restrict the installation of the lock frame 3. Two fixed blocks 41 have outwardly recessed mounting grooves on their inner end faces, providing mounting space for the elastic element 47. A hollow rod 46 is positioned between the two mounting grooves, with its left and right ends extending into the two mounting grooves respectively. The hollow rod 46 provides a mounting carrier for the movable block 42. Two elastic elements 47 are symmetrically mounted on the annular ends of the hollow rod 46, and the other ends of the two elastic elements 47 are connected to the inner walls of the two mounting grooves respectively. The two elastic elements 47 work together to rotate the hollow rod 46. The elastic elements 47 can be coil springs. A movable block 42 located between two fixed blocks 41 is set on the annular end of the hollow rod 46, and the movable block 42 is triangular in cross section and extends out of the front side of the fixed block 41. The movable block 42 assists in restricting the installation. The inner end faces of the two fixed blocks 41 are recessed outward to form arc-shaped grooves 45, and the arc-shaped grooves 45 are located below the mounting groove. The arc-shaped grooves 45 provide a movement channel for the cylinder 421. The two cylinders 421 are respectively installed on the left and right ends of the movable block 42, and the two cylinders 421 are slidably connected in the two arc-shaped grooves 45. The cylinders 421 and the arc-shaped grooves 45 work together to restrict the running range of the movable block 42. Both fixed blocks 41 have recessed grooves 43 on their outward end faces. The grooves 43 provide installation space for the extrusion strips 44. The two extrusion strips 44 are slidably connected in the two grooves 43, and the extrusion strips 44 extend out of the grooves 43 to the outside. The two extrusion strips 44 are pressed and attached to the left and right walls of the through groove 31. The two extrusion strips 44 work together to provide secondary positioning between the two fixed blocks 41 and the locking frame 3. Two round rods 49 are rotatably connected to the inner ends of two extrusion strips 44, and the inner ends of the two round rods 49 pass through two fixing blocks 41 and extend into the hollow rod 46. The round rods 49 provide a mounting carrier for the extrusion strips 44. Nuts 48 are embedded in the inner walls of the two grooves 43, and the two nuts 48 are threaded to the annular ends of the two round rods 49. The round rods 49 can move left and right through the nuts 48. Multiple slide bars 461 are installed at equal intervals on the inner wall of the hollow rod 46, and the slide bars 461 are arranged along the length of the hollow rod 46. The annular end faces of the two round rods 49 are both concave to form slide grooves 491, and the slide groove 491 located on the inner side of the nut 48 extends to the inner end of the round rod 49. The left and right ends of the slide bar 461 extend into the corresponding slide grooves 491 in the two round rods 49, and the slide bar 461 is slidably connected to the slide groove 491. The multiple slide bars 461 and the multiple slide grooves 491 are used in conjunction to enable the round rod 49 and the hollow rod 46 to rotate synchronously.

[0021] During the downward movement of the switch latch 6 and fastener 4 within the lock frame 3, the lock frame 3 will obliquely press the movable block 42, thereby causing the movable block 42 and the hollow rod 46 to rotate. This will cause the cylinder 421 to move along the arc groove 45 and cause the elastic element 47 to contract and deform. The elastic element 47 will generate elastic force. At the same time, with the assistance of multiple slide bars 461 and multiple slide grooves 491, the two round rods 49 will rotate synchronously. Since the round rods 49 are threadedly connected to the nut 48, the round rods 49 rotate and move inward at the same time, thereby causing the pressing strip 44 to move inward along the groove 43. When the fastener 4 is inserted into the through groove 31, the hollow rod 46 and the movable block 42 will rotate in opposite directions under the elastic force of the two elastic elements 47. This will cause the movable block 42 to pass through the through groove 31, and the two round rods 49 will rotate in opposite directions. With the assistance of the nut 48, the two round rods 49 will move outward, which will cause the two extrusion strips 44 to move outward and contact the left and right walls of the through groove 31. When wear occurs in the contact area between the fixed block 41 and the inner wall of the through groove 31, the fixed block 41 will slide with the through groove 31. At this time, the movable block 42 will be restricted again by the inner wall of the through groove 31. The fixing block 41 and the through groove 31 are pressed together in both left and right directions, which effectively reduces the probability of left and right swing between the socket 2 and the plug 1, and also provides secondary restriction for the locking frame 3, effectively reducing the probability of poor contact between the socket 2 and the plug 1, thus effectively ensuring the locking effect and quality.

[0022] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A locking structure for a connector, characterized in that, include: Plug (1), the lower end of which is inserted into socket (2); The lock frame (3) has a U-shaped structure. Both vertical parts of the lock frame (3) are installed on the front end of the socket (2). The front end of the lock frame (3) is recessed to form a through groove (31), and the through groove (31) extends to the inner wall of the lock frame (3). The switch latch (6) has a U-shaped structure. The rear vertical part of the switch latch (6) is located at the lower end of the housing of the plug (1), and the lower end of the switch latch (6) extends into the lock frame (3). An auxiliary piece (61) is installed at the upper end of the front vertical part of the switch latch (6), and the auxiliary piece (61) is arranged in an inclined manner with the lower part lower and the upper part higher. The auxiliary piece (61) and the switch latch (6) have an integrated structure. Fastener (4) is provided at the front end of switch latch (6), and fastener (4) is engaged in through groove (31); The pusher is slidably connected to the front end of the plug (1); A rectangular tube (5) is set at the lower end of the pusher. The auxiliary piece (61) extends into the rectangular tube (5) from the rear opening of the rectangular tube (5), and the rectangular tube (5) is located on the upper side of the lock frame (3).

2. The locking structure of the connector according to claim 1, characterized in that: The pusher includes a push plate (51), which is attached to the front end of the housing part of the plug (1). The front end of the housing part of the plug (1) is recessed to form a guide groove (11), and the guide groove (11) extends to the lower end of the housing part of the plug (1). The cross-section of the guide groove (11) is inverted T-shaped. A slider (52) is slidably connected in the guide groove (11), and the cross-section of the slider (52) is inverted T-shaped. The lower end of the slider (52) is connected to the upper end of the rectangular tube (5), and the upper end of the rectangular tube (5) is connected to the push plate.

3. The locking structure of the connector according to claim 2, characterized in that: The upper end of the slider (52) is provided with a locking spring (7), and the locking spring (7) has a U-shaped structure. The upper end of the locking spring (7) is connected to the top of the inner side of the slide groove (491).

4. The locking structure of the connector according to claim 2, characterized in that: The push plate (51) has multiple protrusions installed at equal intervals at its front end, and the front end of the rectangular tube (5) is recessed to form an arrow groove, with the arrow groove pointing upwards.

5. The locking structure of the connector according to claim 1, characterized in that: The fastener (4) includes two fixing blocks (41). The two fixing blocks (41) are symmetrically installed at the front end of the switch latch (6). The cross-section of the fixing blocks (41) is a trapezoid with a narrow bottom and a wide top. The upper ends of the two fixing blocks (41) are in contact with the top of the inside of the through groove (31). The inner end faces of the two fixing blocks (41) are recessed outward to form mounting grooves. A hollow rod (46) is provided between the two mounting grooves. The left and right ends of the hollow rod (46) extend into the two mounting grooves respectively. Two elastic elements (47) are symmetrically installed on the annular end of the hollow rod (46). The other ends of the two elastic elements (47) are connected to the inner walls of the two mounting grooves respectively. A movable block (42) is provided on the annular end of the hollow rod (46). The movable block (42) is located between the two fixing blocks (41). The movable block (42) is triangular in cross-section and extends out of the front side of the fixing block (41).

6. The locking structure of the connector according to claim 5, characterized in that: The inner end faces of the two fixed blocks (41) are recessed outward to form arc-shaped grooves (45), and the arc-shaped grooves (45) are located on the lower side of the mounting groove. The movable block (42) has cylinders (421) installed at both ends, and the two cylinders (421) are slidably connected to the two arc-shaped grooves (45) respectively.

7. The locking structure of the connector according to claim 5, characterized in that: Both of the fixed blocks (41) have concave grooves (43) on their outward end faces. Both of the grooves (43) are slidably connected to extrusion strips (44), and the extrusion strips (44) extend out of the grooves (43) to the outside. The two extrusion strips (44) are respectively extruded and attached to the left and right walls of the through groove (31). The inward ends of the two extrusion strips (44) are rotatably connected to round rods (49). The inward ends of the two round rods (49) pass through the two fixed blocks (41) and extend into the hollow rod (46). Nuts (48) are embedded in the inward walls of the two grooves (43), and the two nuts (48) are respectively threaded onto the annular ends of the two round rods (49). The round rods (49) and the hollow rod (46) are connected by a limiting component.

8. The locking structure of the connector according to claim 7, characterized in that: The limiting component includes multiple slide bars (461), which are equidistantly installed on the inner wall of the hollow rod (46) and arranged along the length of the hollow rod (46). The annular end faces of the two round rods (49) are concave to form grooves (491), and the grooves (491) extend to the inner end of the round rods (49). The grooves (491) are located on the inner side of the nut (48). The left and right ends of the slide bars (461) extend into the corresponding grooves (491) in the two round rods (49), and the slide bars (461) are slidably connected to the grooves (491).

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