A 12-core fool-proof quick connector

Abstract

The application discloses a 12-core fool-proof quick connector, which comprises a socket composed of a socket shell, a magnetic core and two groups of plug pins and a plug composed of a plug shell, an iron column and two groups of terminal insertion holes corresponding to the plug pins, wherein the head of the socket shell is provided with a first surrounding wall and a seat in the shape of a water drop as a whole, the plug pins and the magnetic core are assembled in the hole structure of the seat in an interference manner, the plug shell is provided with a second surrounding wall in the shape of a water drop as a whole, the second surrounding wall is matched and compatible with the slot between the first surrounding wall and the seat, the iron column is embedded and fixed in the inner cavity of the second surrounding wall, and the terminal insertion holes are assembled in the matching column and the matching seat of the inner cavity of the second surrounding wall in an interference manner. The application has the advantages that the positioning accuracy of the connector is improved, the risk of damage of the terminal is reduced, the assembling efficiency, the connecting speed and the connecting stability of the connector are improved on the basis of ensuring the separation resistance of the connector, and the connector structure is shaped and adjusted in the shape of a water drop.

Description

TECHNICAL FIELD

[0001] The present application relates to a connector structure, in particular to an electric connector structure with fool-proof and quick and reliable connection, belonging to the technical field of electric connectors. BACKGROUND

[0002] With the breakthroughs in electronic application technology and various household appliances and transportation production industries, the interactive transmission of various high-power and high-current through electric connectors has become the first choice in product design to ensure that the fault location can be quickly determined and repaired or replaced when the equipment fails, so as to improve the service life of the product.

[0003] Such high-voltage electric connectors usually include a socket and a plug, and in addition to considering the connection strength and signal stability of the two by interference fit, the relative position of the two is also locked by an external locking mechanism. However, the external locking mechanism greatly increases the complexity of the connector structure and is not suitable for use in micro connectors. For some multi-core micro connectors, interference fit between the housings is obviously insufficient to ensure connection strength, and using the same metal material for the pin and the hole to process the engagement shape to ensure the connection strength of the connector is also difficult for the small and fragile metal parts, and the high-frequency plugging action is easy to deform, which is difficult to achieve the ideal butt joint strength.

[0004] From the actual application of existing multi-core micro connectors, although the electric cores are designed by grouping and attached in a specific layout, neither the socket nor the plug can improve the convenience of plugging, even if the surface of the plug is marked with a marker symbol for alignment. Moreover, if the plugging operation is deviated by human, it is easy to cause accidental damage to the electric core and cause connection failure. SUMMARY

[0005] The purpose of the present application is to provide a 12-core fool-proof quick connector to facilitate accurate alignment and connection of the connector and improve the operability of plugging.

[0006] The technical solution of the application for realizing the above-mentioned purpose is a 12-core fool-proof quick connector, comprising a socket and a plug, characterized in that: the socket comprises a socket shell, a magnetic core and two groups of pins, wherein the socket shell is an integrally formed injection molding part and the axial middle part is formed into an end face body separating a head part and a tail part, an assembly thread is arranged on the outer surface of the tail part, the inner cavity of the tail part is formed with two groups of through holes penetrating to the head part and a positioning hole close to the central axis, the head part is provided with a first surrounding wall with a whole shape like a water droplet and a seat, the seat is provided with concave-shaped butt joint cavities corresponding to the two groups of through holes and the positioning hole, the pins are interference-fitted in the through holes, and the magnetic core is interference-fitted in the positioning hole; the plug comprises a plug shell, an iron column and two groups of terminal insertion holes corresponding to the pins, wherein the plug shell is an integrally formed injection molding part and the axial middle part is formed into a convex ring separating an exposed part and an inner sealed part, the exposed part is provided with a second surrounding wall with a whole shape like a water droplet, the second surrounding wall is matched and compatible in the slot between the first surrounding wall and the seat, the inner cavity of the exposed part is formed with butt joint columns and butt joint tables matched and compatible in each butt joint cavity, and the iron column is embedded and fixed, and the terminal insertion holes are interference-fitted in the butt joint columns and the butt joint tables.

[0007] Further, corresponding to the seat with a shape like a water droplet, a first butt joint cavity with a circular-angled triangle shape is arranged on the top part with a sharp cone shape, the bottom surface of the first butt joint cavity is provided with through holes distributed in a bottom 3-waist 2-top 1 shape, a group of six pins are connected from the tail part to the through holes towards the head part and are interference-fitted and fixed, the butt joint table is provided with a circular-angled triangle-shaped boss matched and compatible with the first butt joint cavity, and a group of six terminal insertion holes are connected from the inner sealed part to the butt joint table towards the exposed part and are interference-fitted and positioned.

[0008] Further, corresponding to the seat with a shape like a water droplet, a second butt joint cavity coaxial with the positioning hole and with an inner diameter suitable for the iron column to be inserted therein is arranged in the middle part, six independent and separate third butt joint cavities are arranged in the periphery semi-surrounding area of the second butt joint cavity, a group of six pins are connected from the tail part to the through holes in each third butt joint cavity towards the head part, the butt joint column is provided with a cylindrical boss matched and compatible with the third butt joint cavity, and a group of six terminal insertion holes are connected from the inner sealed part to the butt joint column towards the exposed part and are interference-fitted and positioned.

[0009] Further, the inner diameter of the second butt joint cavity is smaller than the inner diameter of the positioning hole and a variable-diameter limiting step is arranged between the two; the inner wall of the positioning hole is provided with ribs matched and compatible with the axial positioning of the magnetic core.

[0010] Further, one end of the iron column towards the inner sealed part is provided with an embedded part with a locally contracted outer diameter, and the plug shell is plastic-wrapped with the embedded part and formed into a whole with the iron column.

[0011] Further, the socket is provided with a nut, the tail part of the socket is connected to a pre-set hole of an assembly object and the end face body abuts against the outer wall of the assembly object, and the nut is screwed on the assembly thread and abuts against the inner wall of the assembly object to stop rotation.

[0012] Further, the preset hole is provided with a cut edge circle with a pair of parallel edges, the tail part is cut with a pair of parallel assembly positioning surfaces based on the assembly thread, and the distance between the assembly positioning surfaces matches the distance between the cut edges.

[0013] Further, the plug is matched with a TPU soft rubber sleeve, the opening inner wall of the TPU soft rubber sleeve is provided with a eave-shaped eave, the surface of the inner sealing part is provided with two or more clamping convex points, and the TPU soft rubber sleeve is clamped into an integral whole with the plug through the eave covering the clamping convex points.

[0014] Further, the TPU soft rubber sleeve is provided with an inner recess-shaped alignment indicating part at the top surface of the second surrounding wall corresponding to the water drop shape, and a gripping part is formed on the surface opposite to the two sides of the alignment indicating part.

[0015] The application of the electrical connector structure optimization scheme has significant progress: by shaping and adjusting the water drop shape of the socket and the plug, the positioning accuracy of the connection is improved; and the terminal pins and terminal sockets are distributed in groups in the water drop-shaped connection area, and the alignment compatibility of the connection cavity, column and table is combined, which reduces the risk of terminal damage; at the same time, by improving the positioning assembly structure of the magnetic attraction assembly, the assembly efficiency, connection speed and connection stability of the connector are improved on the basis of ensuring the separation resistance of the connector. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a three-dimensional appearance schematic diagram of the 12-core foolproof quick connector in a separated state.

[0017] Figure 2 is Figure 1 a split structure schematic diagram of the connector shown in the figure.

[0018] Figure 3 is Figure 1 a partial detail structure schematic diagram of the socket shell in the connector shown in the figure. DETAILED DESCRIPTION

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

[0020] As Figures 1 to 3As shown, the present application is a foolproof quick connector, which comprises a conventional socket and plug. The structural features are as follows: the socket 1 is composed of a socket shell 3, a magnetic core 5 and two groups of pins 6. As shown, the socket shell 3 is an injection molded part, and the axial middle part is shaped into an end surface body 35 separating the head part and the tail part. The outer surface of the tail part is provided with an assembly thread 36, and the inner cavity of the tail part is shaped into two groups of through holes 37 and a positioning hole 38 close to the central axis. The head part is provided with a first surrounding wall 31 and a seat 32, which are shaped like a water droplet. The seat 32 is provided with recessed butt cavities 33a and 33b corresponding to the two groups of through holes and the positioning hole. The pins 6 are interference fitted into the through holes 37, and the magnetic core 5 is interference fitted into the positioning hole 38, which are the main components for electrical connection. Furthermore, the plug 2 is composed of a plug shell 7, an iron column 8 (φ6mm in this embodiment) and two groups of terminal insertion holes 9 corresponding to the pins. The plug shell 7 is an injection molded part, and the axial middle part is shaped into a convex ring 74 separating the exposed part and the inner sealed part. The exposed part is provided with a second surrounding wall 71 shaped like a water droplet, which is compatible in size with the slot between the first surrounding wall 31 and the seat 32, and serves as the second repositioning guide for the connector plugging operation. The inner cavity of the exposed part is shaped into a butt column 73 and a butt seat 72 compatible with the butt cavities, and the iron column 8 is embedded and fixed. The terminal insertion holes 9 are interference fitted into the butt column and the butt seat.

[0021] In the above scheme, the two groups of pins are functionally distinguished, and are positioned by the specific direction of the crimping method. Since the butt cavities are shaped like a water droplet with the top side tightened and the bottom side drummed, one group of pins with small current and suitable for dense arrangement are positioned at the top and evenly distributed in a triangular shape, and the other group of pins with other functions are evenly distributed around the iron column in a semi-enclosed manner. Based on the socket shell and the plug shell shaped like a water droplet, the first repositioning guide for the connector plugging operation is provided, and based on the matching of the butt column, the butt seat and the butt cavities, the third repositioning guide for the connector plugging operation is provided. Thus, the misplug operation can be completely eliminated. Figure 3 As shown in the partial detail structure, the inner cavity of the tail part is also provided with a partition 39 corresponding to a part of the pins to separate and ensure the creepage distance between them, which is beneficial to improve the performance of the connector.

[0022] From the further refined structural features: on the one hand, corresponding to the water drop-shaped seat 32, a first butt joint cavity 33a of a rounded triangle is arranged at the top of the sharp cone, and the bottom surface of the first butt joint cavity 33a is provided with a bottom 3-waist 2-top 1-shaped distribution of perforations 37, and a group of six pins 6 are inserted into the perforations from the tail to the head and are fixed by interference fit. For each pin, the axial length is divided into a front butt joint section, a middle mounting section, and a tail side wire clamping section, wherein the mounting section is shaped as a three-layer or more axial distribution and inverse to the mounting direction. Thus, the high-strength interference fit with the perforation is achieved, so that the pin remains stable during the connector insertion process and does not move back to the position that cannot be restored. Opposite to the first butt joint cavity 33a, the above-mentioned butt joint table 72 is provided with a rounded triangle boss compatible with it, and a group of six terminal insertion holes 9 are inserted into the butt joint table from the inner sealing part to the exposed part and are positioned by interference fit. Although not clearly shown, it should be noted that the structure of the terminal insertion hole reinforced by interference fit is consistent with the pin, so the illustration and elaboration are omitted.

[0023] On the other hand, corresponding to the water drop-shaped seat 32, a second butt joint cavity 34 coaxial with the positioning hole 38 and with an inner diameter suitable for the iron column to be inserted therein is arranged at the middle, and six independent and spaced third butt joint cavities 33b are arranged in the periphery of the second butt joint cavity. A group of six pins are inserted into the perforations of each third butt joint cavity from the tail to the head, and the interference fit positioning structure is consistent with the above-mentioned another group of pins. Opposite to each third butt joint cavity 33b, the above-mentioned butt joint column 73 is provided with a cylindrical boss compatible with the third butt joint cavity, and a group of six terminal insertion holes 9 are inserted into the butt joint column from the inner sealing part to the exposed part and are also positioned by interference fit. As a preferred embodiment, the butt joint table and the butt joint column are provided with a micro chamfer with a guiding joint action at the edge of the butt joint surface and the eaves of the butt joint cavity.

[0024] As the assembly and positioning structure of the magnetic core, as shown in Figure 3 The inner diameter of the above-mentioned second butt joint cavity 34 is smaller than that of the positioning hole 38, and a variable-diameter limiting step 381 is arranged between them; the inner wall of the positioning hole 38 is also provided with a rib 382 for axial positioning of the magnetic core 5. Thus, for the socket, the completed product assembly has a relative static state, so that after the magnetic core is loaded into the positioning hole in the direction of the butt joint, one is provided by the rib 382 to provide the magnetic core with a stop damping, and the other is provided by the limiting step 381 to provide the magnetic core with a blocking force to prevent the iron column from being pulled out forwardly. From the positioning and mounting structure of the iron column in the plug, the end of the above-mentioned iron column 8 towards the inner sealing part is provided with an embedded part 81 with a local outer diameter contraction. In order to avoid damage to the plastic parts of the plug shell caused by forced embedding of the iron column, the connector of the present application adopts a molding process in which the plug shell is wrapped in the embedded part and integrated with the iron column.

[0025] As the necessary configuration and structure of the above-mentioned embodiment to realize the finished product assembly, the above-mentioned socket 1 is provided with a nut 4, the tail of the socket is inserted into the preset hole of the assembly object and the end surface body 35 abuts against the outer wall of the assembly object, and the nut 4 is screwed from the inside of the assembly object to the outside of the assembly object on the assembly thread 36 and abuts against the inner wall of the assembly object to stop rotating, thereby completing the assembly of the socket and the assembly object into one body. In order to realize the further optimization of the socket assembly, the above-mentioned preset hole can be provided with a cut edge circular shape with a pair of parallel edges, and the tail of the socket shell can be provided with a pair of parallel assembly positioning surfaces 361 based on the assembly thread 36, and the distance between the assembly positioning surfaces 361 matches the distance between the cut edges. Therefore, the socket has only two assembly directions relative to the assembly object; even when the cut edges and the assembly positioning surfaces are not parallel but are matched and obliquely arranged, the socket can have only one assembly direction.

[0026] Furthermore, in order to meet the external insulation requirement of the plug and the protection requirement of the terminal socket therein, the above-mentioned plug 2 is provided with a TPU soft sleeve 10, and the inner wall of the opening 11 of the TPU soft sleeve is provided with a chamfer-shaped eave A (as shown on the left); correspondingly, the inner sealing part surface is provided with two or more clamping protrusions 75, and the TPU soft sleeve 10 is clamped with the clamping protrusions 75 through the eave A and assembled into one body with the plug. Figure 2

[0027] In particular, the TPU soft sleeve 10 is provided with an inner recess-shaped alignment indicating part 13 on the top surface of the second surrounding wall corresponding to the water drop shape, so as to preliminarily position the top of the second surrounding wall in a tightened state when the user holds the plug, and to realize a soft and fast plugging action through the above-mentioned multiple alignment guides. In addition, the TPU soft sleeve 10 is formed with a group of gripping parts 12 on the two side surfaces opposite to the alignment indicating part 13. The gripping parts are provided with concave arc surfaces opposite to each other, and each concave arc surface is further formed with a convex rib 121 for increasing the gripping damping, which is more suitable for two-finger gripping.

[0028] From the above introduction of the structure optimization scheme of the electric 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: by shaping and adjusting the water drop shape of the socket and the plug, the positioning accuracy of the connection is improved; and the terminal pins and the terminal sockets are distributed in groups in the water drop-shaped connection area, and the alignment of the connection cavities, columns and tables is compatible, thereby reducing the risk of damage to the terminals; at the same time, by improving the positioning and assembly structure of the magnetic attraction assembly, the assembly efficiency, the connection speed and the connection stability of the connector are improved on the basis of ensuring the separation resistance of the connector.

[0029] In addition to the above-mentioned embodiments, the present application can have other embodiments, and any technical scheme formed by equivalent replacement or equivalent transformation falls within the scope of the present application.​

Claims

1. A 12-pin foolproof quick-connect connector, comprising a socket and a plug, characterized in that: The socket consists of a socket shell, a magnetic core, and two sets of pins. The socket shell is a one-piece injection molded part, with an end face forming a separation between the head and tail sections along its axial center. The tail section has assembly threads on its outer surface, and its inner cavity has two sets of through holes extending to the head section and a positioning hole near the central axis. The head section has a first enclosure wall and a base with an overall teardrop shape. The base has recessed mating cavities corresponding to the two sets of through holes and the positioning hole. The pins are interference-fitted into the through holes, and the magnetic core is interference-fitted into the positioning hole. The teardrop-shaped base has a first docking cavity with rounded triangular corners at the top of the cone-shaped base. The bottom surface of the first docking cavity has perforations distributed in the order of three on the bottom side, two on the waist side, and one on the top side. A set of six pins are inserted into the perforations from the tail to the head and fixed with an interference fit. A second docking cavity is provided in the middle, which is coaxial with the positioning hole and has an inner diameter suitable for inserting the iron column. Six independent and spaced third docking cavities are provided in the semi-enclosed area around the second docking cavity. A set of six pins are inserted into the perforations of each third docking cavity from the tail to the head. The plug consists of a plug shell, iron posts, and two sets of terminal sockets corresponding to the pins. The plug shell is an integrally molded injection molded part, with a convex ring formed in the axial center to separate the exposed part and the inner sealing part. The exposed part has a second enclosure wall with an overall teardrop shape. The second enclosure wall is matched and accommodated in the groove between the first enclosure wall and the base. The inner cavity of the exposed part is formed with mating posts and mating platforms that match and accommodate each mating cavity, and the iron posts are embedded and fixed. The terminal sockets are grouped and interference-fitted into the mating posts and mating platforms for positioning. The mating platform is a rounded triangular boss that matches and accommodates the first mating cavity, and a group of six terminal sockets from the inner sealing part to the exposed part are connected to the mating platform and interference-fitted for positioning. The mating post is a cylindrical boss that matches and accommodates the third mating cavity, and a group of six terminal sockets from the inner sealing part to the exposed part are connected to the mating post and interference-fitted for positioning.

2. The 12-pin foolproof quick-connect connector according to claim 1, characterized in that: The inner diameter of the second docking cavity is smaller than the inner diameter of the positioning hole, and a diameter-changing limiting step is provided between the two; the inner wall of the positioning hole is provided with ribs that cooperate with the axial positioning of the magnetic core.

3. The 12-pin foolproof quick-connect connector according to claim 1, characterized in that: The iron column has a partially constricted outer diameter retaining part at one end facing the inner sealing part, and the plug shell is plastically encased in the retaining part and formed as one piece with the iron column.

4. The 12-pin foolproof quick-connect connector according to claim 1, characterized in that: The socket is equipped with a nut, the tail of the socket is inserted into the preset hole of the assembly object and the end face abuts against the outer wall of the assembly object, and the nut is screwed into the assembly thread and abuts against the inner wall of the assembly object to prevent rotation.

5. The 12-pin foolproof quick-connect connector according to claim 4, characterized in that: The preset hole is a tangled circle with a pair of parallel sides, and the tail is provided with a pair of parallel assembly positioning surfaces based on the assembly thread, and the spacing between the assembly positioning surfaces matches the spacing between the tangled edges.

6. The 12-pin foolproof quick-connect connector according to claim 1, characterized in that: The plug is equipped with a TPU soft rubber sleeve, and the inner wall of the opening of the TPU soft rubber sleeve is provided with a chamfered eave. The inner sealing surface is provided with two or more snap-fit ​​protrusions. The TPU soft rubber sleeve covers the snap-fit ​​protrusions through the eave and is assembled with the plug as one piece.

7. The 12-pin foolproof quick-connect connector according to claim 6, characterized in that: The TPU soft sleeve has a concave alignment indicator on the top surface of the corresponding teardrop-shaped second enclosure, and gripping parts are formed on the two side surfaces opposite the alignment indicator.

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