Anti-misoperation single-core corner electrical connector

Abstract

The application discloses a single-core anti-misoperation rotary electrical connector, wherein a buckle block is arranged in a plug, and the buckle block is controlled to displace through a clamping part, and a limiting rib of a socket shell is used for position limiting or stop. An outer end of the buckle block is connected with a lock plate, notches are arranged on both sides of the lock plate in a sliding direction, and two convex ribs are arranged on an inner wall of an assembly cavity. The lock plate is switched between an unlocking state and a locking state through alignment and misalignment of the notches and the convex ribs, and the movability of the buckle block is strengthened. The electrical connector structure of the application retains the fastening function of the buckle block on the plug and the socket, and improves the operation stability of the buckle in driving the clamping part to move through the buckle block and the optimized sliding structure between the buckle block and the assembly cavity, so that the connector is prevented from being triggered by unintentional external force in the state without protection and being decoupled.

Description

Technical Field

[0001] This invention relates to a connector structure, and more particularly to an electrical connector structure that is easy to achieve 360° arbitrary positioning, corner docking, and reliably prevents accidental disconnection, belonging to the field of electrical connector technology. Background Technology

[0002] With breakthroughs in electronic application technology and various home appliance and transportation manufacturing industries, the use of electrical connectors to transmit high-power currents has become the preferred method in finished product design. This is to ensure that when equipment malfunctions, the damaged parts can be quickly identified, repaired, or replaced, thereby extending the product's lifespan.

[0003] These high-voltage connectors typically consist of a socket and a plug. Besides using an interference fit to maintain connection strength and signal stability, some designs also employ external locking mechanisms to secure their relative positions. However, these external functional accessories are complex and bulky, making them unsuitable for connector miniaturization.

[0004] In practical applications of existing connectors, there is often a trade-off between durability and ease of operation in the locking mechanism. If a higher mating strength is required, two or more sets of locking combinations can be distributed around the mating axis, but this increases the difficulty of disconnecting the connection. On the other hand, simply adding damping between the outer shell or pins and sockets to prevent detachment is clearly insufficient to meet the strength requirements of special applications.

[0005] Currently, there is a snap-on anti-disengagement mechanism integrated into the plug. It controls the clearance and locking function of the locking part relative to the socket shell through external force pressing and elastic reset, thereby preventing accidental disconnection or breakage of the connector after mating. However, in actual applications, during maintenance and repair, maintenance personnel often misoperate the anti-disengagement snap-on mechanism, causing the connector to disconnect abnormally. Summary of the Invention

[0006] The purpose of this invention is to provide a single-core corner electrical connector that prevents misoperation, so as to facilitate the mating and automatic locking of the single-core corner electrical connector, while also enabling convenient unlocking and disconnection of the connector.

[0007] The technical solution of the application for achieving the above-mentioned purpose is a single-core anti-misoperation rotary electrical connector, comprising a socket and a plug, the socket is provided with a socket shell and a single-core pin positioned therein, the plug is provided with a plug shell and a socket for connecting the pin and a cable and being turned by 90 degrees, the plug shell is integrally formed with the socket by plastic packaging, and a fitting cavity axially orthogonal to the socket and having a closed bottom is left, the plug is provided with a snap block and a spring supporting the snap block based on the fitting cavity, the snap block is provided with a clamping part movably entering and exiting the plug connecting cavity, and a limiting elastic arm is arranged at the back of the clamping part, the periphery of the connecting port of the socket shell is provided with a chamfered limiting rib, the displacement of the snap block is positioned, the clamping part is withdrawn to leave the space for the limiting rib to enter and exit or abuts against the limiting rib to stop the withdrawal, and the feature is that the outer end of the snap block is provided with a lock plate vertically sliding with the elastic support direction, the lock plate is provided with notches on both sides of the sliding direction, the inner wall of the fitting cavity is provided with two opposite convex ribs, the lock plate is pressed downward together with the snap block along the elastic support direction or is reset in the unlocked state of the notches and the convex ribs being in alignment, and the lock plate drives the snap block to be pressed downward and is limited in the locked state of the notches and the convex ribs being out of alignment.

[0008] Further, the outer end of the snap block is formed with a smooth groove and a positioning groove from the surface to the inside, the positioning groove is provided with a first positioning hole and a second positioning hole penetrating outward on both sides of the sliding direction of the lock plate, the lock plate is integrally formed with a surface contact plate, a middle sliding plate and a bottom side U-shaped outwardly extending positioning plate, the notches are formed based on the surface contact plate and the surface contact plate is slidingly fitted on the end surface of the snap block, the middle sliding plate is inserted into the smooth groove and is slidingly fitted, the positioning plate is inserted into the positioning groove and the positioning convex points at the end of the positioning plate outwardly extend to the both sides and are slidingly engaged in the first positioning hole or the second positioning hole, and the lock plate forms two static positions relative to the snap block.

[0009] Further, corresponding to the positioning convex points being positioned in the first positioning hole, the notches and the convex ribs are in alignment, the snap block is in the unlocked state of being pressed downward and rebounding, and corresponding to the positioning convex points being positioned in the second positioning hole, the notches and the convex ribs are out of alignment, the snap block is in the locked state of being pressed downward and being limited.

[0010] Further, the surface of the surface contact plate is provided with a plurality of parallel ribs for increasing the contact damping.

[0011] Further, the fitting cavity is provided with a stroke groove on the side opposite to the plug connecting cavity, the side fin of the limiting elastic arm is positioned in the stroke groove, under the external supporting force of the spring, the snap block is limited by the side fin in the stroke groove, and the length of the stroke groove satisfies that the surface of the lock plate is flush with the surface of the plug shell, and the clamping part completely leaves the space for the limiting rib to enter and exit the plug connecting cavity with the displacement of the snap block.

[0012] Further, the concave arc side surface of the clamping part is suitable for limiting the axial passing of the limiting rib, and the clamping part is provided with a guide surface matching the chamfered slope surface of the limiting rib in the direction of butt joint, and the clamping part is provided with a flat surface clamping the limiting rib in the direction opposite to the butt joint, so that the connector is driven to slide by overcoming the spring supporting force in the unlocking position of the locking plate.

[0013] Further, the hollow cylinder of the plug shell coaxially extends into the socket cavity at one side of the corresponding jack, and the port outer wall of the hollow cylinder is provided with a special-shaped part with tooth grooves, and the special-shaped part is embedded and matched with the snap spring part of the socket shell.

[0014] The application of the electric connector structure optimization scheme has significant progress: in the case of retaining the fastening function of the snap block to the plug and the socket, the locking plate is added to the snap block, and the sliding structure between the snap block and the assembly cavity is optimized, the operation stability of the snap block driving the clamping part is improved, and the connector is prevented from being triggered by non-intentional external force in the absence of protection. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of the perspective view of the electric connector in a separated state.

[0016] Figure 2 is Figure 1 is an exploded structural schematic diagram of the electric connector.

[0017] Figure 3 is Figure 2 is a detailed structural schematic diagram of part of the components of the electric connector from another perspective.

[0018] Figure 4 is Figure 1 is a detailed structural schematic diagram of the socket of the electric connector from another perspective. DETAILED DESCRIPTION

[0019] The specific embodiments of the application will be further described in detail below in combination with the accompanying drawings, so that the technical scheme of the application is easier to understand and grasp, and the protection scope of the application is more clearly defined.

[0020] In order to inherit the advantages of the anti-disconnection snap mechanism in improving the stability and reliability of the butt joint in the application of the connector, the application is committed to adding the locking and unlocking functions of the connection operation, and further optimizes the detailed structure of the mechanism.

[0021] As Figures 1 to 3As shown from the brief introduction of the existing connector basis of the technical innovation of the application, the single-core corner electrical connector comprises a socket 1 and a plug 2, the socket 1 is provided with a socket shell 4 and a single-core pin 3 positioned therein, and the plug 2 is provided with a plug shell 6 and a socket 5 for butt-jointing the pin 3 and a cable and being turned by 90°. On one hand, the plug shell 6 is integrally formed by overmolding around the socket 5, and a mounting cavity 61 axially orthogonal to the socket and having a closed bottom is left. The plug 2 is provided with a snap block 81 slidably mounted in the mounting cavity 61 and a spring (omitted from the drawing) elastically supporting the snap block, and the whole is named as an anti-dropping snap mechanism 8. The snap block 81 is provided with a clamping portion 811 movably entering and exiting a plug butt-jointing cavity 64, and a limiting elastic arm 812 is arranged at the back of the clamping portion. On the other hand, a limiting rib 41 in the form of a chamfer is arranged on the periphery of the butt-jointing port of the socket shell 4, and the displacement of the snap block is positioned, the clamping portion 811 retreats to leave a space for the limiting rib to enter and exit or abuts against the limiting rib to stop retreating, and the detailed description about the function implementation is described in the following. As the key feature of the anti-misoperation improvement of the connector structure of the application, the outer end of the above snap block 81 is provided with a lock plate 82 slidably mounted perpendicularly to the elastic supporting direction, and the lock plate 82 is provided with notches 824 on both sides in the sliding direction. Correspondingly, the inner wall of the above mounting cavity 61 is provided with two opposite convex ribs 611, and the lock plate 82 is pressed downward together with the snap block 81 along the elastic supporting direction or is bounced back to the original position in the unlocked state of the notches and the convex ribs being in alignment and compatible, and the lock plate is stopped by the convex ribs and drives the snap block to be pressed downward in the locked state of the notches and the convex ribs being misaligned.

[0022] In the above structure introduction, as shown in Figure 3 Unlike the existing single snap block, the improvement of the application to prevent misoperation is mainly to combine the snap block with the lock plate slidably mounted, and to fine-tune the inner wall structure of the mounting cavity of the plug shell, so that the lock plate has the control ability of the mobility of the snap block in different positions, prevents the connector from being snapped off due to the misoperation of non-subjective external force, and fine-tunes the butt-jointing operation of the similar connector.

[0023] From a further refined implementation structure, as shown in Figure 3As shown, the outer end of the snap block 81 is formed with a smooth groove 813 and a positioning groove (not labeled) on the front and back surfaces, and the positioning groove is provided with first and second positioning holes 814a and 814b that are externally through on both sides facing the sliding direction of the lock plate. The lock plate 82 is provided with a front plate 821, a middle slide plate 822 and a bottom side U-shaped outwardly extending positioning plate 823 that are integrally formed and parallel to each other. From the functional design and operability of the parts of the lock plate, the recess 824 is based on the front plate 821 and the front plate is slidingly fitted to the end surface of the snap block 81. Therefore, the front plate, as the exposed part of the anti-disengagement snap mechanism 8, is used for forward and backward sliding operation and longitudinal pressing force transmission. In particular, as the basis for the recess, the ability of the locking function to control the movement of the snap block is achieved. As shown in the figure, the surface of the front plate 821 is also provided with several parallel ribs that increase the contact damping. In addition, the middle slide plate 822 is slidingly fitted in the smooth groove 813, which determines the directionality of the lock plate sliding. Finally, the positioning plate 823 is inserted into the positioning groove, and the positioning protrusions at the ends of the positioning plate are slidingly fitted into the first or second positioning hole 814a or 814b.

[0024] Due to the shape design of the positioning plate, the positioning protrusions have the ability of elastic approximation and self-resetting, so that under the sliding thrust of the front plate, the positioning protrusions are sufficient to switch compatible positions between the two positioning holes, and the lock plate forms two static stations of unlocking and locking relative to the snap block. Specifically, corresponding to the positioning protrusions in the first positioning hole, the recess and the convex rib are in alignment and compatible, and the snap block is in the unlocked state of pressing and rebounding. At this time, the electrical connector can be automatically clamped and fixed or pressed to be disconnected. Corresponding to the positioning protrusions in the second positioning hole, the recess and the convex rib are misaligned, and the snap block is in the locked state of limited pressing. At this time, the plug and the socket cannot be connected, and the plug cannot be removed in the connected state, because the snap block and its clamping part are limited and fixed.

[0025] In addition to the above technical improvements of the anti-disengagement snap mechanism of the present application to prevent misoperation, the following is a comprehensive and brief structural description of the same type of connector combined with the drawings.

[0026] As a connecting object, the aforementioned limiting rib gradually increases in diameter from the end face to the root side and then sharply decreases to a straight column shape when reaching a suitable unhooking amplitude. From the perspective of the connector's mating process, the limiting rib of the socket shell can push the clamping part to move towards the bottom side of the assembly cavity as the mating axis advances, and then completely give way to the plug mating cavity so that the limiting rib can continue to advance until the clamping part loses the pushing force of the limiting rib and is guided by the spring support force to reset and partially occupy the plug mating cavity again. Thus, when the connector is fully mated and the buckle block is in the outwardly reset state, the clamping part will be out of position with the limiting rib and limit the movement of the plug shell along the mating axis; when the connector needs to be disconnected, the buckle block will be in the state of being pressed inward, and the clamping part will be concentrically aligned with the limiting rib, i.e. the clamping part is equivalent to completely giving way to the space of the plug mating cavity, so that the plug shell can move freely along the mating axis. Of course, the prerequisite for these operations is that the lock plate of the invention is in the unlocked position.

[0027] The aforementioned plug shell integrally formed by over-molding with the jack as the inner core can not only eliminate the assembly process based on interference fit of the jack, but also realize the combination of two components made of different materials, thereby effectively improving the structural strength of the plug part. As shown in the figure, the jack 5 is a metal integrally formed member with a 90° corner between the mating end 51 and the wiring end 52, and the two are connected through the base plate 53. As shown in the figure, the jack also naturally forms a female corner space 54 between the two ends, which provides the buckle block and the spring with the advantage of positioning and assembling in the plug shell and having sufficient space for movement. Through the injection molding of the plug shell, the movement of the buckle block is completely isolated from the jack, thereby making the connector plug have waterproof and insulating properties.

[0028] The buckle block 81 is provided with a limiting spring arm 812 opposite the clamping part. The aforementioned assembly cavity 61 is provided with a travel groove 612 on the side opposite the plug mating cavity 64, and the side fin (not labeled) of the limiting spring arm 812 falls into the travel groove. Under the external support force of the spring, the buckle block 61 is limited by the side fin in the travel groove, and the surface of the buckle block 61 is flush with the surface of the plug shell; the length of the travel groove satisfies that as the buckle block moves and positions, the surface of the lock plate is flush with the surface of the plug shell, and the clamping part completely gives way to the limiting rib in the plug mating cavity.

[0029] In the sliding accommodation of the snap block 81, the arc-shaped side surface of the clamping part 811 is suitable for limiting the axial passing of the limiting ribs, and the clamping part is provided with a guide surface that matches the chamfered slope surface of the limiting ribs in the direction of the connector docking. Thus, with the docking of the connector, the guide surface and the chamfered slope surface are in contact and then slide relative to each other, which drives the snap block to overcome the spring support force and retract into the inside of the assembly cavity. In addition, the clamping part is provided with a flat surface that clamps the limiting ribs in the opposite direction of the docking direction. The flat surface cannot trigger the self-displacement of the clamping part. Therefore, during the docking process of the connector, the snap block does not need to be manually operated, and the connector can be self-locked and cannot be unlocked.

[0030] The plug shell 6 is provided with a heat dissipation fin 62 on the corner side surface to increase the surface area and prevent slipping. In addition, from the perspective of the terminal end of the jack, a tail sleeve 7 completely covering the jack is sleeved on the side of the plug shell 6 away from the docking end of the jack through a thread 63. At the same time, the plug shell 6 is provided with a hollow cylinder 65 coaxially extending into the socket docking cavity on the side corresponding to the docking end of the jack. The hollow cylinder 65 is internally connected to the docking end 51 of the jack and externally forms the plug docking cavity 64 with the main body of the plug shell. Moreover, the port outer wall of the hollow cylinder 65 is provided with a special-shaped part 651 with tooth grooves. After the plug and the socket are completely docked, the special-shaped part 651 can be embedded and matched with the snap spring part 42 provided on the socket shell, thereby achieving anti-rotation of the connector after complete docking. In particular, the hollow cylinder is sleeved with a waterproof rubber ring 92 with multiple ratchet teeth, thereby achieving sealing and waterproof protection of the electrical connection components after docking with the socket. The structure of the hollow cylinder requires that the end is inwardly tapered, and the tapering amplitude is suitable for covering the docking end of the jack and meeting the requirement that the pin penetrates into the hollow cylinder and docks with the jack.

[0031] As shown in Figure 4 To meet the convenience and reliability of the pin interference fit assembly, the inner cavity of the socket shell 4 is formed with a segmented opening-shaped snap spring part 42 and a set of position matching bosses 43 arranged in a radial direction. The middle section of the pin 3 is provided with a tapered cylindrical positioning part 31 corresponding to the snap spring part, which increases in diameter and changes sharply in the direction away from the docking end of the pin; and the middle section of the pin 3 is provided with a cutout 32 corresponding to the position matching boss 43. The pin 3 is adjusted and positioned by the cutout and the position matching boss, and is attached and positioned in the socket shell by the positioning part passing through the snap spring part, and remains relatively stationary under high-strength pulling force.

[0032] In order to guarantee the stability of the socket shell installation and strengthen the waterproof performance, the socket shell 4 is provided with a pair of symmetrical distribution of perforations 44 and four corner distribution of mounting holes 46, and a square rubber pad 91 is sleeved on the inner side of the socket shell 4. The square rubber pad is expanded through the mushroom head 911 of the rubber pad to be positioned in the perforation and left empty to each mounting hole. In particular, the square rubber pad 91 is also formed with a waterproof convex rubber 912 on the surface away from the socket shell, that is, a convex is formed around each mounting hole and the outer periphery of the guide sleeve corresponding to the plug pin of the socket shell. By using the flexibility and elasticity of the rubber pad, high-performance sealing and waterproof effect can be achieved after the socket is assembled towards the application object.

[0033] Furthermore, in order to guarantee the electrical safety of the socket in the exposed external environment when it is not connected with the plug, the end of the above-mentioned plug pin 3 is provided with an anti-electric shock insulating cap 93.

[0034] From the above introduction of the structure optimization scheme of the electrical connector of the present application and the detailed description of the embodiment combined with the drawings, it can be seen that the present application has outstanding substantial features and significant progress: while retaining the fastening function of the buckle block body to the plug and socket, by adding a lock plate to the buckle block body and optimizing the sliding fit structure between the buckle block body and the assembly cavity, the operation stability of the buckle driving the clamping part is improved, and the buckle block body is prevented from being triggered by non-intentional external force in the state of lacking protection to cause the disconnection of the connector.

[0035] In addition to the above-mentioned embodiments, the present application can also have other implementation manners, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of the present application.

Claims

1. A single-core anti-misoperation rotary electrical connector, comprising a socket and a plug, the socket is provided with a socket shell and a single-core pin positioned therein, the plug is provided with a plug shell and a socket for docking the pin and cable and turning 90°, the plug shell is integrally formed by overmolding around the socket, and a fitting cavity axially orthogonal to the socket and closed at the bottom is left, the plug is provided with a snap block body fitted therein and a spring supporting the snap block body based on the fitting cavity, wherein the snap block body is provided with a clamping part movable in and out of the plug docking cavity, and a limiting elastic arm is provided at the back of the clamping part, the periphery of the docking port of the socket shell is provided with a chamfered limiting rib, which is positioned with the displacement of the snap block body, the clamping part retreats to leave the limiting rib in and out of the space or abuts against the limiting rib to stop retreating, characterized in that: The outer end of the snap block is formed with a smooth groove and a positioning groove from the surface to the inside, and the positioning groove is provided with first and second positioning holes penetrating outward on both sides towards the sliding direction of the lock plate, the outer end of the snap block is provided with a lock plate slidingly fitted perpendicularly to the elastic support direction, the lock plate is provided with a surface contact plate, an intermediate sliding plate and a U-shaped positioning plate outwardly extended at the bottom side, which are integrally formed and parallel to each other, the lock plate is provided with notches on both sides in the sliding direction, the notches are formed based on the surface contact plate and the surface contact plate is slidingly fitted to the end surface of the snap block, the intermediate sliding plate is inserted into the smooth groove and slidingly fitted, the positioning plate is inserted into the positioning groove and the positioning protrusions outwardly extended at the end of the positioning plate are slidingly fitted and engaged into the first or second positioning hole, the lock plate forms two static stations relative to the snap block, corresponding to the positioning protrusions positioned in the first positioning hole, the notches are aligned with the ribs, the snap block is in the unlocked state of being pressed down and rebounded, corresponding to the positioning protrusions positioned in the second positioning hole, the notches are misaligned with the ribs, the snap block is in the locked state of being pressed down and restricted, the inner wall of the assembly cavity is provided with two opposite ribs, in the unlocked state of the notches aligned with the ribs, the lock plate is pressed down or rebounded along the elastic support direction together with the snap block under the pressing external force, in the locked state of the notches misaligned with the ribs, the lock plate drives the snap block to be pressed down and restricted.

2. The single-pole, misplug-resistant corner electrical connector of claim 1, wherein: The surface of the surface contact plate is provided with a plurality of parallel ribs for increasing contact damping.

3. The single-pole, misplug-resistant corner electrical connector of Claim 1, wherein: The assembly cavity is provided with a stroke groove on the side opposite to the plug docking cavity, the side fin of the limiting elastic arm is positioned in the stroke groove, under the external support force of the spring, the snap block is limited by the side fin in the stroke groove, and the length of the stroke groove satisfies that: with the movement and positioning of the snap block, the surface of the lock plate is flush with the surface of the plug shell, and the clamping portion completely releases the space for the limiting rib to move in and out of the plug docking cavity.

4. The single-pole, misplug-resistant corner electrical connector of claim 1, wherein: In the sliding position of the snap block, the side surface of the clamping portion in the concave arc shape is suitable for the axial passage of the limiting rib, and the clamping portion is provided with a guide surface matching the chamfered slope surface of the limiting rib in the direction of docking, in the unlocked station of the lock plate, the snap block is slidingly driven by the connector to overcome the support force of the spring, and the clamping portion is provided with a flat surface clamped with the limiting rib in the direction away from the docking direction.

5. The single-pole, misplug-resistant corner electrical connector of Claim 1, wherein: The plug shell is provided with a hollow cylinder coaxially extending into the socket docking cavity on the side corresponding to the plug hole docking end, and the end port outer wall of the hollow cylinder is provided with a tooth groove interposed special-shaped part, and the special-shaped part is embedded and fitted with the clamping spring part provided on the socket shell.

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