A 360° scoop-resistant micro-rectangular electrical connector

Abstract

A 360-degree anti-digging micro-rectangular electric connector includes a plug and a socket, the plug includes a plug shell, the socket includes a socket shell and a socket structure, the socket shell is provided with a plug-in cavity at the plug-in end, the plug-in end of the socket structure is located in the plug-in cavity, H is defined as the maximum depth of the plug inserted into the plug-in cavity when the plug and the socket are dug, C1 is the chamfer at the entrance of the plug-in cavity, B is the width of the plug-in cavity, C2 is the chamfer at the plug-in end of the plug shell, and L is the distance between the end face of the plug-in end of the socket shell and the end face of the plug-in end of the socket shell, H=B / 2, H+C1-C2

Description

Technical Field

[0001] This invention relates to a connector, specifically to a 360° anti-scooping micro rectangular electrical connector. Background Technology

[0002] Currently, the development of products conforming to the Chinese military standard GJB2446A (corresponding to the domestic J30J series connectors) or the US military standard MIL-DTL-83513 (corresponding to the foreign MDM series connectors) is mostly based on the structure specified in the standards. These connectors have a trapezoidal cross-section at the mating end, with the socket protruding from the socket insulator. The elastic pin components are protected by the plug insulator. A schematic diagram of this connector structure is shown below. Figure 1a , 1b As shown.

[0003] Standard products lack anti-scooping (i.e., anti-misalignment) functionality. During mating, the plug and socket must be aligned correctly. If the product scoops, the plug housing or insulator may touch the socket structure, causing damage to the socket structure, insulator chipping, or pin stacking, ultimately damaging the connector and affecting its transmission performance. Furthermore, in some devices with limited space, where it's difficult to apply force during mating, scooping (ineffective alignment) may occur between the plug and socket.

[0004] Standard micro rectangular electrical connector structure as follows Figure 2 As shown, the socket structure exposes the socket insulator, and the depth of the socket structure from the socket housing mating surface is shallow. When the product is scooped out (not properly mated), the socket structure is not guided into the hole of the plug insulator. The plug housing or plug insulator can directly contact the socket structure, causing damage to the socket opening, chipping of the plug insulator, and pin pile-up on the plug contacts, ultimately leading to connector failure.

[0005] Currently available anti-scooping products require significant modifications to the product housing, necessitating adjustments to user equipment. Furthermore, they only address angled insertion and removal after alignment, failing to meet 360° anti-scooping requirements. Blind insertion still carries the risk of connector damage. Therefore, connector structure optimization is needed. This requires adding an extra anti-scooping design to the connector, ensuring 360° anti-scooping capabilities and enabling its application in space-constrained environments, without altering the external dimensions after mating or adjusting the user's equipment. Summary of the Invention

[0006] To address the technical problem that existing electrical connectors cannot achieve 360° anti-scooping, this invention provides a 360° anti-scooping micro-rectangular electrical connector.

[0007] The objective of this invention is achieved through the following technical solution. A 360° anti-digging micro-rectangular electrical connector according to this invention includes a plug and a socket. The plug includes a plug housing, and the socket includes a socket housing and a socket structure. The socket housing has a mating cavity at its mating end, and the socket structure's mating end is located within the mating cavity. H is defined as the maximum depth the plug can penetrate into the mating cavity when the plug and socket are digging into each other. C1 is the chamfer at the entrance of the mating cavity, B is the width of the mating cavity, C2 is the chamfer at the mating end of the plug housing, and L is the distance between the end face of the socket structure's mating end and the end face of the socket housing's mating end. H = B / 2, H + C1 - C2 < L. One of the outer wall of the plug housing's mating end and the wall of the socket housing's mating cavity is provided with a protruding key extending along the mating direction, and the other is provided with a groove matching the protruding key.

[0008] Furthermore, one of the outer wall of the plug housing's mating end and the wall of the socket housing's mating cavity has multiple protruding keys, and the other has multiple grooves.

[0009] Furthermore, the widths of the plurality of convex keys are not exactly the same or are all different, and correspondingly, the widths of the plurality of grooves are not exactly the same or are all different.

[0010] Furthermore, the cross-section of the plug housing's mating end is trapezoidal, and correspondingly, the cross-section of the mating cavity on the socket housing is trapezoidal.

[0011] Furthermore, the convex key is located on the parallel side of the plug housing, and the outer edge of the convex key on the side wall of the plug housing is aligned with the outer edge of the corresponding convex key on the other side wall. The widths of the convex keys on the same side wall are different, and the grooves on the socket housing match the convex keys.

[0012] Furthermore, a plug insulator is provided inside the plug housing, and multiple holes are distributed on the plug insulator, with pin components inserted into the holes; a socket insulator is provided inside the socket housing, and multiple holes are distributed on the socket insulator, with socket structures inserted into the holes; the number and position of the holes on the plug insulator correspond to the number of holes on the socket insulator. After the plug and socket are plugged in, the plug-in end of the plug housing is inserted into the plug-in cavity of the socket housing, the socket structure is inserted into the corresponding hole of the plug insulator, and the pin component is inserted into the socket structure.

[0013] Furthermore, the rear end of the socket structure is connected to the socket wire, and the socket cavity at the connection between the socket structure and the socket wire is filled with glue; the rear end of the pin assembly is connected to the plug wire, and the plug cavity at the connection between the pin assembly and the plug wire is filled with glue.

[0014] Compared with existing technologies, the advantages of this invention are as follows: The 360° anti-scooping micro-rectangular electrical connector optimizes the size and structure of existing products. While maintaining the same overall socket dimensions, it increases the insertion length of the plug housing, and retracts the socket insulator and socket structure. Simultaneously, it adds protruding keys to the two outer walls of the plug housing's insertion end and grooves to the two inner walls of the socket housing's insertion cavity. During scooping, the protruding keys and grooves limit the insertion direction of the plug and socket. During insertion, the socket's socket structure, plug insulator, and plug housing are not damaged, thus achieving 360° anti-scooping functionality. After insertion, the overall dimensions remain unchanged, consistent with the original connector's dimensions, allowing for in-situ replacement of existing products and iterative upgrades of standard products without requiring adjustments to user equipment, thus expanding the product's application range. When using the connector in confined spaces, to avoid occupying too much space, the plug can be initially inserted at an angle into the socket, and then gradually corrected to the normal insertion direction, making it suitable for confined space environments.

[0015] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1a This is a schematic diagram of an existing standard electrical connector when it is not mated.

[0017] Figure 1b for Figure 1a Left sectional view;

[0018] Figure 2 This is a schematic diagram of the existing electrical connector structure during the insertion process.

[0019] Figure 3 This is a schematic diagram of the plug in Embodiment 1 of the present invention;

[0020] Figure 4 This is a schematic diagram of the socket in Embodiment 1 of the present invention;

[0021] Figure 5 This is a schematic diagram of the digging process in Embodiment 1 of the present invention;

[0022] Figure 6 This is a schematic diagram of digging at another angle according to Embodiment 1 of the present invention;

[0023] Figure 7 This is a schematic diagram of the extreme digging process in Embodiment 1 of the present invention;

[0024] Figure 8 This is a schematic diagram of the plug in Embodiment 2 of the present invention;

[0025] Figure 9 This is a schematic diagram of the socket in Embodiment 2 of the present invention.

[0026] [Attached image labels]

[0027] 1-Plug, 101-L-type locking assembly, 102-Plug housing, 103-Plug insulator, 104-Twisted pin assembly, 105-Potting compound I, 106-Plug wire, 107-Raised key, 2-Socket, 201-P-type locking assembly, 202-Socket housing, 203-Socket insulator, 204-Socket structure, 205-Gasket, 206-Potting compound II, 207-Socket wire, 208-Groove, C1-Socket housing chamfer; B-Socket inner cavity width; C2-Plug housing chamfer; L-Distance between the front face of the socket structure and the front face of the socket housing; H-Limited distance between the plug and socket during insertion / removal. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] An embodiment of the present invention, a 360° anti-scooping micro-rectangular electrical connector, is as follows: Figures 3 to 7 As shown, it includes a plug 1 and a socket 2. The ends of the plug 1 and the socket 2 that are inserted into each other are called the insertion ends, i.e., the front end, and the part away from the insertion ends is the rear end. The part of the socket 2 that accommodates the insertion ends of the plug 1 is called the insertion cavity.

[0030] The plug 1 includes a plug housing 102. Inside the plug housing 102, from the front end to the rear end, a plug insulator 103 and a potting compound 105 are arranged sequentially. The plug insulator 103 has multiple holes, and each hole is provided with a pin component 104. The front end of the pin component 104 is a pin, and the tail end of the pin component 104 is connected to the plug wire 106. The inner cavity of the plug housing 102 at the connection between the pin component 104 and the wire 106 is filled with potting compound to fix the two together.

[0031] The mating end of plug 1 has a trapezoidal cross-section for insertion into the mating cavity of socket 2. The mating end of plug 1 is lengthened, and the mating cavity of socket 2 is deepened, increasing the connector mating guide length. That is, the length of the front end of plug housing 102 is extended, and the mating cavity of socket housing 202 is deepened. Multiple raised keys 107 of the same width are provided on the outer wall of the mating end of plug 1, i.e., the front outer wall of plug housing 102. The raised keys 107 are located on the parallel sides of the plug housing, and there are no fewer than four raised keys 107. In this embodiment, there are four raised keys 107, symmetrically distributed on the front outer wall of plug housing 102. The raised keys 107 extend along the mating direction and cooperate with the socket to achieve the functions of anti-digging and guiding mating.

[0032] The socket 2 includes a socket housing 202. Inside the socket housing 202, from front to rear, are sequentially arranged a rubber pad 205, a socket insulator 203, and potting compound II 206. The front end of the socket housing 202 has a cavity, which serves as the socket's mating cavity. The rubber pad 205 is located at the bottom of the mating cavity and fixed to the socket insulator 203. When the plug's mating end is inserted into this cavity, the rubber pad 205 provides a buffering and sealing effect. The socket insulator 203 has multiple holes, the positions and numbers of which correspond to the holes on the plug insulator 103. Each hole on the socket insulator houses a socket structure 204. The front end of the socket structure 204 is located within the mating cavity at the front end of the socket housing 202. After the plug 1 is inserted into the socket 2, the mating end of the plug housing 102 is inserted into the mating cavity, the socket structure 204 is inserted into the corresponding hole on the plug insulator 103, and the pin assembly 104 is inserted into the socket structure 204. The rear end of the socket structure 204 is connected to the socket wire 207, and glue is poured into the inner cavity of the socket housing 202 at the connection point to fix the two together.

[0033] The insertion cavity at the front end of the socket 2 is deepened to match the insertion end of the plug 1. That is, the socket insulator 203 shrinks towards the rear end, and the insertion cavity is deepened to provide a cavity for the extended plug insertion end. When it mates with the plug 1, it increases the product's insertion guide length. The shrinking of the socket insulator 203 towards the rear end causes the socket structure 204 to move towards the rear end, increasing the distance between the front end face of the socket structure 204 and the front end face of the socket housing 202. When the plug 1 digs, it prevents the plug housing 102 or the plug insulator 103 from touching the socket structure 204. The inner wall of the insertion cavity at the front end of the socket is provided with multiple grooves 208. The number and position of the grooves 208 correspond to the protrusions 107. The protrusions 107 and the grooves 208 cooperate with each other to play a guiding and limiting role. There are no fewer than 4 grooves 208. The grooves 208 are located on the parallel side of the socket housing. In this embodiment, there are 4 grooves 208, which cooperate with the plug 1 to achieve the functions of preventing digging and guiding insertion. In this embodiment, four protruding keys 107 are symmetrically arranged on the outer walls of both sides of the plug housing.

[0034] The length of the mating end of the plug housing 102 is increased, but the mating cavity of the socket housing 202 is deepened. The outer contour dimensions of the socket housing 202 remain unchanged. After mating with the plug 1, the overall dimensions of the connector remain unchanged. No adjustments are required to the user's equipment, and the original series of products can be replaced in situ.

[0035] In the micro-rectangular electrical connector, the mating ends of plug 1 and socket 2 are both trapezoidal. Each trapezoid includes two opposite long sides and two short sides, with the two long sides being parallel. When the plug and socket are mated, there are three scooping modes: oblique insertion / removal of the plug's long side and the socket's long side, as shown in the background art. Figure 2 As shown; the long side of the plug is inserted at an angle to the short side of the socket, as shown. Figure 5 As shown; the plug is inserted at an angle with the short side of the plug facing the short side of the socket, as shown. Figure 8 As shown. When the long side of the plug is inserted or removed at an angle to the long side of the socket, due to the presence of the protruding key 107 and the groove 208, when the plug and socket are digging, the protruding key 107 and the groove 208 form an angle, causing the protruding key 107 to be stuck on the groove 208, so that the plug cannot be inserted too much into the socket, preventing damage to the socket structure 204, and thus achieving anti-digging.

[0036] The angled insertion and removal of the plug's long side and the socket's short side represents the extreme digging mode, where the plug housing 102 extends to the maximum depth into the socket housing 202. Figure 9 As shown, H is the maximum depth to which the plug penetrates the socket's mating cavity during digging, C1 is the chamfer at the entrance of the socket's mating cavity, B is the width of the socket's mating cavity, C2 is the chamfer of the plug's housing, and L is the distance between the front face of the socket structure and the front face of the socket housing. When the plug's long side is inserted and removed at an angle to the socket's short side, and during extreme digging, H = B / 2. When designing the connector, the socket's inner cavity width B should be minimized as much as possible; simultaneously, the socket's chamfer C1 should be minimized as much as possible, and the plug's chamfer C2 should be maximized as much as possible, so that H + C1 - C2 < L. This allows the connector to achieve 360° anti-digging functionality.

[0037] When the connector is engaged, the plug housing 102 and the plug insulator 103 cannot contact the socket structure 204 of the socket 2, and will not cause damage to the socket structure 204, the plug insulator 103 and the pin assembly 104.

[0038] The plug is equipped with L-shaped locking components 101 on both sides, and the socket is equipped with P-shaped locking components 201 on both sides. When the plug and socket are inserted into place, the L-shaped locking components 101 and P-shaped locking components 201 are used to fix the plug and socket.

[0039] In other embodiments, a groove is provided on the plug housing 102, and correspondingly, a protruding key is provided on the wall of the socket housing 202 mating cavity.

[0040] The 360° anti-scooping micro-rectangular electrical connector is an optimized version of the original product, with improved dimensions and structure. While maintaining the same overall socket dimensions, the insertion length of the plug housing is increased, and the socket insulator and socket structure are retracted. Simultaneously, raised keys are added to the two outer walls of the plug housing's insertion end, and grooves are added to the two inner walls of the socket housing's insertion cavity. During scooping, the raised keys 107 and grooves 208 limit the insertion direction of the plug and socket. During insertion, the socket's socket structure 204, the plug insulator 103, and the plug housing 102 remain undamaged, thus achieving 360° anti-scooping functionality. After insertion, the overall dimensions remain unchanged, consistent with the original connector's dimensions. It can replace existing products in situ and allows for iterative upgrades of standard products without requiring adjustments to user equipment, expanding the product's application range. When using the connector in confined spaces, to avoid occupying too much space, the plug can be initially inserted at an angle into the socket, and then gradually corrected to the normal insertion direction, making it suitable for confined environments.

[0041] Embodiment two of the present invention is a 360° anti-scooping micro rectangular electrical connector, as follows: Figure 8 , Figure 9 As shown. Existing standard electrical connectors do not have anti-misfit (i.e., identification) functions. Reversing the pin structure and socket structure can achieve the anti-misfit function for two connectors with the same number of pins, but when multiple (more than 3) connectors with the same number of pins are used on the same device, there is a risk of connector misfit (the plug is inserted into a non-matching socket). Once misfit occurs, it will cause signal transmission errors and equipment damage.

[0042] The difference between Embodiment 2 and Embodiment 1 lies in the addition of key position recognition and mis-insertion prevention functions. These functions are implemented based on Embodiment 1 by ensuring that the widths of the raised keys at different positions on the plug mating end are not entirely the same, or that all raised keys have different widths, while simultaneously providing grooves of corresponding widths at the corresponding positions in the socket housing's mating cavity. The raised key widths of different micro-rectangular electrical connectors on the same device are not entirely the same, or that all raised key widths are different.

[0043] Compared to Embodiment 1, in this embodiment, the non-edge positions of the two protruding keys 107 on the same sidewall of the plug change relative to their inner sides to achieve the identification function; the outer edge positions of the two protruding keys 107 do not change and are aligned with the outer edges of the two protruding keys 107 on the other sidewall to ensure the connector's anti-digging function. Ultimately, this causes the width of the two protruding keys 107 to change, and correspondingly, the groove 208 on the socket changes accordingly. Only when the protruding keys and grooves on the plug and socket of the same connector match can mating be achieved.

[0044] By varying the widths of the raised key 107 and the groove 208, only matching plugs and sockets can be inserted, achieving key identification and preventing misinsertion. When the width of the raised key on the plug is the same as the width of the groove on the socket, the plug and socket can be smoothly inserted and locked; when the width of the raised key on the plug is different from the width of the groove on the socket, the plug and socket cannot be inserted, thus achieving the connector's anti-misinsertion function.

[0045] Through the above structural design, the micro rectangular electrical connector can have 360° anti-scooping, key identification, and anti-misinsertion functions. At the same time, the external dimensions of the connector after mating are consistent with the original product, which can replace the original series of products in place, upgrade the existing products, and improve the application range of the products. No adjustment is required for the user's equipment.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A 360° anti-scooping micro-rectangular electrical connector, comprising a plug and a socket, the plug comprising a plug housing, the socket comprising a socket housing and a socket structure disposed on a socket insulator, the socket housing having a mating cavity at its mating end, and the socket structure having a mating end located within the mating cavity, characterized in that: The length of the mating end of the plug increases, and the socket insulator shrinks backward to deepen the depth of the socket mating cavity. After the plug and socket are mated, the overall size of the connector remains unchanged. Define H as the maximum depth that the plug extends into the mating cavity when the plug and socket are scooped, C1 as the chamfer at the entrance of the mating cavity, B as the width of the mating cavity, C2 as the chamfer at the mating end of the plug housing, and L as the distance between the end face of the mating end of the jack structure and the end face of the mating end of the socket housing. H = B / 2, and H + C1 - C2 < L. A keyway extending in the mating direction is provided on one of the outer wall of the mating end of the plug housing and the wall of the socket housing mating cavity, and a groove matching the keyway is provided on the other.

2. The 360° anti-scooping micro-rectangular electrical connector according to claim 1, characterized in that: Multiple keyways are distributed on one of the outer wall of the mating end of the plug housing and the wall of the socket housing mating cavity, and multiple grooves are distributed on the other.

3. A 360° anti-scooping micro-rectangular electrical connector according to claim 2, characterized in that: The widths of the multiple keyways are not all the same or are all different. Correspondingly, the widths of the multiple grooves are not all the same or are all different.

4. A 360° anti-scooping micro-rectangular electrical connector according to claim 3, characterized in that: The cross-section of the mating end of the plug housing is trapezoidal. Correspondingly, the cross-section of the mating cavity on the socket housing is trapezoidal.

5. A 360° anti-scooping micro-rectangular electrical connector according to claim 4, characterized in that: The keyways are located on the parallel sides of the plug housing. The outer edges of the keyways on the outer side of the side wall of the plug housing are aligned with the outer edges of the corresponding keyways on the other side wall. The widths of the keyways on the same side wall are different from each other, and the grooves on the socket housing match the keyways.

6. A 360° anti-scooping micro-rectangular electrical connector according to claim 1, characterized in that: A plug insulator is provided inside the plug housing. Multiple holes are distributed on the plug insulator, and pin components are inserted into the holes. Multiple holes are distributed on the socket insulator, and jack structures are inserted into the holes. The number and positions of the holes on the plug insulator correspond to those on the socket insulator. After the plug and socket are mated, the mating end of the plug housing is inserted into the mating cavity of the socket housing, the jack structure is inserted into the corresponding hole of the plug insulator, and the pin component is inserted into the jack structure.

7. A 360° anti-scooping micro-rectangular electrical connector according to claim 6, characterized in that: The rear end of the jack structure is connected to the socket wire, and glue is poured into the socket cavity at the connection between the jack structure and the socket wire. The rear end of the pin component is connected to the plug wire, and glue is poured into the plug cavity at the connection between the pin component and the plug wire.

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