Socket shell, socket, plug and connector

Abstract

The invention provides a socket shell, a socket, a plug and a connector, the socket shell comprises a flange plate matched with a mounting panel and a plugging part formed by forward extension of the flange plate, a curved groove and an identification key groove are distributed on the outer circumference of the front end of the plugging part along the circumferential direction, the curved groove can be matched with a staple bolt on the plug to realize head seat locking, and the identification key groove can be matched with the staple bolt on the plug. According to the invention, the identification key grooves and the curved grooves are distributed on the outer circumference of the socket shell in a coplanar manner, so that the whole socket is easy to clean. And under the condition that structures such as locking, plugging and mistake proofing are not lost, the axial size of the socket is extremely compressed, and the ultra-low dwarfing of the socket is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a socket housing, a socket, a plug and a connector. Background Art

[0002] The socket connector is installed on the device. When the device is in the field with a lot of mud and sand, the socket end is easy to get dirty and difficult to clean without protection, which may cause the plug-in problem to be difficult when the head is plugged in again. At the same time, when the device is a small mobile device, the connector needs to be as low as possible to control the overall size of the device.

[0003] When considering the realization of functions such as easy cleaning of the socket, the product surface is mainly easy to clean through end face contact, while whether the overall structure of the socket end can achieve easy cleaning is often ignored. When designing the socket shell of traditional circular connectors, the inner circumference of the shell is often required to be a keyway structure to play a role in identification and guidance; the outer circumference is a locking structure, and common structures are threads and three curved grooves. When using the traditional socket structure, there will be a gap between the internal insulator and the outer shell. Even if end face contact is used, the purpose of easy cleaning and dirt prevention of the socket end cannot be achieved. Considering the functional structure of the connector design such as plug-in, it is difficult to achieve the overall easy cleaning of the socket end. At present, some connector products have changed their thinking and placed the keyway structure with guidance and error prevention and the locking structure on the outside of the shell (to achieve the purpose of easy cleaning), but this design will inevitably increase the axial length of the socket, which will not meet the demand for ultra-low height. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a socket housing, a socket, a plug and a connector, wherein the outer circumference of the socket housing is provided with an identification keyway and a curved groove structure, the curved groove can cooperate with the staple on the plug to achieve head seat locking, and the identification keyway can be used to determine whether the plugged plug is matched and whether the plug is rotated to the correct plugging position. The present invention distributes the identification keyway and the curved groove on the outer circumference of the socket housing in the same plane, thereby achieving overall easy cleaning of the socket. Moreover, in the case where the locking, plugging and error-proofing structures are not missing, the axial size of the socket is extremely compressed, achieving ultra-low height of the socket.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: A socket housing comprises a flange matched with a mounting panel and a plug-in portion formed by extending forward from the flange, wherein a curved groove and an identification key groove are circumferentially distributed on the outer circumference of the front end of the plug-in portion, wherein the curved groove can be matched with a staple on a plug to achieve head seat locking, and the identification key groove is used to determine whether it can be matched with a corresponding identification key on the plug.

[0006] Furthermore, a plurality of identification key grooves are provided on the front end outer wall of the plug-in portion at intervals along the circumferential direction.

[0007] Furthermore, the widths of the plurality of identification key slots along a direction perpendicular to the extension direction of the socket housing are the same, unequal, or completely different.

[0008] Furthermore, the bottom wall of the identification key slot is an arc segment, and the diameters of the circles where the bottom walls of the plurality of identification key slots are located are the same, not completely the same, or completely different.

[0009] Further, the same number of curved grooves and identification key grooves are alternately arranged.

[0010] A socket comprises the above socket housing and a socket contact installed in the socket housing.

[0011] Furthermore, the maximum axial length of the socket housing is 8.6 mm.

[0012] A plug comprises a plug housing, a connecting nut, a torsion spring and a plug contact. The connecting nut is movably mounted on the front end of the plug housing. An identification key which can be matched with an identification key slot is provided on the front end surface of the plug housing. A clamping nail which can be matched with a curved slot is provided on the inner wall of the connecting nut. The clamping nail is located in the space between two adjacent identification keys.

[0013] Furthermore, a torsion spring is sleeved on the plug housing and is located between the rear end of the connecting nut and the flange portion of the plug housing, one end of the torsion spring is connected to the flange portion, and the other end is connected to the rear end of the connecting nut; a retaining spring is provided on the plug housing, and the connecting nut abuts against the front end of the retaining spring under the action of the axial force provided by the torsion spring.

[0014] Furthermore, the tail of the plug housing is threadedly connected with a tail accessory.

[0015] Furthermore, a sealing ring is provided at the front end of the inner cavity of the plug housing.

[0016] A connector comprises the above-mentioned socket and plug.

[0017] Beneficial effects: As described above, a socket housing, a socket, a plug and a connector of the present invention have the following beneficial effects: (1) When the connector of the present invention is plugged into the head seat, the identification key on the plug housing is aligned with the identification key slot on the socket housing, and the connecting nut is rotated to align the clamping pin with the curved slot. After the connector is plugged into place, the connecting nut rebounds to the initial position under the action of the torque spring, so that the clamping pin and the curved slot are blocked and matched in the front-to-back direction, thereby locking the head seat. In the release stage, the connecting nut is twisted, and the head seat can be automatically separated under the action of the torsion spring, thereby improving the efficiency of plugging and separating the head seat.

[0018] (2) The present invention distributes the identification key slot and the locking curved slot on the outer circumference of the socket housing in the same plane, thereby achieving the overall easy-to-clean and anti-fouling functions of the socket, and compensating for the problem that the current socket structure is only partially easy to clean.

[0019] (3) In the present invention, the axial dimension of the socket housing is extremely compressed without losing the locking, plugging and error-proofing structures. The maximum axial length of the socket housing is 8.6 mm. After the panel is installed, the maximum axial dimension exposed on the panel surface is 6 mm, thereby achieving an ultra-low profile of the socket housing.

[0020] (4) In the present invention, a plurality of identification key grooves are provided at intervals along the circumferential direction on the front end outer wall of the plug-in portion. When the widths of the plurality of identification key grooves along the direction perpendicular to the extension direction of the socket shell are not completely the same or completely different, the product itself can be prevented from being inserted incorrectly; when the distances between the bottom walls of the plurality of identification key grooves and the center of the socket are not completely the same or completely different, connectors with different key positions can be prevented from being inserted incorrectly.

[0021] (5) The present invention can achieve the sealing function of the connector by arranging a sealing ring at the front end of the inner cavity of the plug housing.

[0022] (6) In the present invention, a tail accessory is threadedly connected to the tail of the plug housing, and the tail accessory can be removed at any time, which is convenient for wire welding processing and does not affect the product structure.

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is an axonometric view of the socket in the present invention.

[0026] Figure 2 This is a front view of the socket.

[0027] Figure 3 yes Figure 2 Expanded view of the socket housing in the square frame.

[0028] Figure 4 This is a top view of the socket.

[0029] Figure 5 This is a bottom view of the socket.

[0030] Figure 6 yes Figure 5 Sectional view along AA direction.

[0031] Figure 7 It is one of the axonometric drawings of the plug in the present invention.

[0032] Figure 8 It is the second axonometric drawing of the plug in the present invention.

[0033] Fig. 9 yes Figure 8 Right view of .

[0034] Fig.10 yes Fig. 9 Cross-sectional view along the BB axis.

[0035] Fig.11 It is an axonometric view of the connector in the present invention.

[0036] Graphic markings: 1. socket; 11. socket housing; 111. flange; 112. plug-in part; 1121. identification keyway; 1122. curved groove; 12. socket contact; 2. plug; 21. tail accessory; 22. connecting nut; 23. staple; 24. plug housing; 25. identification key; 26. plug contact; 27. torsion spring; 28. retaining ring; 29. ​​sealing ring. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings, i.e., embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] In the description of the present invention, directional terms such as "up", "down", "left", "right", "front" and "back" mentioned in the text are only used to express relative position relationships relative to the drawings. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The core of the present invention is to provide a socket housing 11, a socket 1, a plug 2 and a connector. The specific structures of the socket, the plug and the connector are described below.

[0041] <Socket> Please refer to Figures 1 to 6 The socket 1 includes a socket housing 11 and a socket contact 12 installed in the socket housing 11, with the plug-in end of the socket 1 as the front end. The socket housing 11 includes a flange 111 that matches the mounting panel and a plug-in portion 112 formed by extending forward from the flange 111. A curved groove 1122 and an identification key groove 1121 are distributed circumferentially on the outer circumference of the front end of the plug-in portion 112. The curved groove 1122 can match with the staple 23 on the plug 2 to achieve head seat locking, and the identification key groove 1121 is used to determine whether it can match with the corresponding identification key 25 on the plug 2.

[0042] It should be noted that there is at least one curved groove 1122 and at least one identification key groove 1121. In the prior art, three curved grooves 1122 are generally provided to ensure the locking effect of the curved groove 1122 and the rear head seat after the staple 23 cooperates. When the number of identification key grooves 1121 is one, although it can also be used to determine whether the plug 2 is matched, the judgment accuracy is general due to the small number of restrictions. The preferred technical solution is to set at least two identification key grooves 1121 on the front end outer wall of the plug-in portion 112 at intervals along the circumferential direction. The more preferred technical solution is to limit the width of the identification key groove 1121 and / or the diameter of the circle where the bottom wall is located: the width of several identification key grooves 1121 along the direction perpendicular to the extension direction of the socket housing 11 is the same or not completely the same or completely different. The distance between the bottom wall of several identification key grooves 1121 and the center of the socket 1 is the same or not completely the same or completely different. When the width of the identification key slot 1121 and / or the diameter of the circle where the bottom wall of the identification key slot 1121 is located are the same, although it is possible to determine whether the plug 2 is matched, the determination accuracy is not very high. When the width of the identification key slot 1121 and / or the diameter of the circle where the bottom wall of the identification key slot 1121 is located are set to be not completely the same or completely different, not only can the connector itself be prevented from being misinserted in the axial direction, but also misinsertion between connectors can be prevented, and at the same time, the plug 2 can be rotated to the correct plugging angle and position, and there will be no damage to the contacts in the plug 2 and the socket 1 due to incorrect plugging angles and plugging positions.

[0043] The present invention arranges the locking curved groove 1122 and the identification key groove 1121 on the outer circumference of the socket housing 11, which can make the socket 1 easy to clean as a whole, making up for the problem that only part of the existing socket structure is easy to clean. At the same time, without missing the locking, plugging and error-proofing structures, the axial dimension of the socket 1 is extremely compressed, and the maximum axial length of the socket housing 11 is 8.6mm. After the panel is installed, the maximum axial dimension of the exposed panel surface is 6mm, realizing the ultra-low profile of the socket housing 11.

[0044] <Plug> Please refer to Figures 7 to 10 The plug 2 comprises a plug housing 24, a connecting nut 22, a torsion spring 27, a retaining spring 28 and a plug contact 26. The connecting nut 22 is movably mounted on the front end of the plug housing 24. An identification key 25 capable of matching with the identification key slot 1121 is provided on the front end surface of the plug housing 24. A clamping pin 23 capable of matching with the curved slot 1122 is provided on the inner wall of the connecting nut 22. The clamping pin 23 is located in the space between two adjacent identification keys 25. The torsion spring 27 is mounted on the plug housing 24 and is located between the rear end of the connecting nut 22 and the flange portion of the plug housing 24. One end of the torsion spring 27 is connected to the flange portion, and the other end is connected to the rear end of the connecting nut 22. The plug housing 24 is provided with a retaining spring 28. The connecting nut 22 abuts against the front end of the retaining spring 28 under the axial force provided by the torsion spring 27.

[0045] Specifically, the tail of the plug housing 24 is threadedly connected to the tail attachment 21. The tail of the plug housing 24 is provided with threads, which cooperate with the threads at the front end of the tail attachment 21. The tail attachment 21 is provided with a cable, which is used to be electrically connected to the plug contact 26.

[0046] The present invention also discloses a connector, please refer to Fig.11 The connector comprises the above-mentioned plug 2 and socket 1. Figure 6 and Fig.10 As shown, during the connector plugging process, the identification key 25 on the plug 2 is aligned with the identification key slot 1121 on the socket 1, and then the plug is pressed. Under the action of the pushing force of the plug 2, the nail 23 is pushed along the curved slot 1122 of the socket housing 11 (see Figure 2 ) moves, and at the same time drives the connecting nut 22 to rotate. When the clamp 23 reaches the bottom of the curved groove 1122, the connecting nut 22 is rotated back to the initial position under the action of the torsion spring 27, and the head seat is self-locked. When the head seat is plugged in, the clamp 23 falls at the end of the curved groove 1122, and the identification key 25 is plugged into the identification key slot 1121. During the release process, only the connecting nut 22 needs to be rotated, and the head seat can be automatically separated under the axial thrust of the torsion spring 27.

[0047] Preferably, a sealing ring 29 is provided on the flange 111 of the socket housing 11, and the O-ring on the flange 111 is used to achieve end face sealing between the socket housing 11 and the mounting panel. A sealing ring 29 is also provided at the front end of the inner cavity of the plug housing 24, and the O-ring inside the plug housing 24 is used to seal with the socket housing 11 to achieve sealing of the mating surface after the head seat is plugged in, so that the connector of the present invention is suitable for use in muddy and sandy environments.

[0048] The technical solution of the present invention is described in detail below in conjunction with specific embodiments.

[0049] Example 1 The connector in this embodiment includes a matching plug 2 and a socket 1, wherein please refer to Figures 1 to 6 The socket 1 includes a socket housing 11 and a socket contact 12 installed in the socket housing 11. The socket housing 11 includes a flange 111 matched with a mounting panel and a plug-in portion 112 formed by the flange 111 extending forward. The plug-in portion 112 has three curved grooves 1122 and three identification key grooves 1121 distributed along the circumference of the front end outer circumference. The curved grooves 1122 and the identification key grooves 1121 are alternately arranged along the circumference of the socket housing. The key widths of the three identification key grooves 1121 are completely different, and the diameters of the circles where the bottom walls of the identification key grooves 1121 are located are also completely different.

[0050] Please refer to Figures 7 to 10 The plug 2 comprises a plug housing 24, a connecting nut 22, a torsion spring 27, a retaining spring 28 and a plug contact 26. The connecting nut 22 is movably mounted on the front end of the plug housing 24. Three identification keys 25 that can be matched with the identification key slots 1121 are provided on the front end surface of the plug housing 24. Three clamping pins 23 that can be matched with the curved slots 1122 are provided on the inner wall of the connecting nut 22. Each clamping pin 23 is located in the space between two adjacent identification keys 25. The torsion spring 27 is mounted on the plug housing 24 and is located between the rear end of the connecting nut 22 and the flange portion of the plug housing 24. One end of the torsion spring 27 is connected to the flange portion, and the other end is connected to the rear end of the connecting nut 22. The plug housing 24 is provided with a retaining spring 28. The connecting nut 22 abuts against the front end of the retaining spring 28 under the axial force provided by the torsion spring 27.

[0051] The above is a detailed introduction to a socket housing, a socket, a plug and a connector provided by the present invention. The principle and specific implementation methods of the present invention are described in this article using specific examples. The above embodiments are only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this field, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the present invention.

Claims

1. A socket housing, characterized in that: The socket housing (11) comprises a flange (111) matched with the mounting panel and a plug-in portion (112) formed by extending forward from the flange, wherein a curved groove (1122) and an identification key groove (1121) are distributed along the circumference of the front end outer circumference of the plug-in portion (112), wherein the curved groove (1122) can be matched with a clamping nail (23) on the plug (2) to achieve head seat locking, and the identification key groove (1121) is used to determine whether it can be matched with a corresponding identification key (25) on the plug (2).

2. A socket housing according to claim 1, characterized in that: A plurality of identification key grooves (1121) are provided at intervals along the circumferential direction on the front end outer wall of the plug-in portion (112).

3. A socket housing according to claim 2, characterized in that: The widths of the plurality of identification key slots (1121) along a direction perpendicular to the extension of the socket housing (11) are the same, unequal, or completely different.

4. A socket housing according to claim 2 or 3, characterized in that: The bottom wall of the identification key slot (1121) is an arc segment, and the diameters of the circles where the bottom walls of a plurality of identification key slots (1121) are located are the same, not completely the same, or completely different.

5. The socket housing according to claim 2, characterized in that: The same number of curved grooves (1122) and identification key grooves (1121) are arranged alternately.

6. A socket, characterized in that: It comprises a socket housing (11) as claimed in any one of claims 1 to 5, and a socket contact (12) installed in the socket housing (11).

7. A socket according to claim 6, characterized in that: The maximum axial length of the socket housing (11) is 8.6 mm.

8. A plug, characterized in that: The invention comprises a plug housing (24), a connecting nut (22), a torsion spring (27), a retaining spring (28) and a plug contact piece (26); the connecting nut (22) is movably mounted on the front end of the plug housing (24); an identification key (25) capable of cooperating with an identification key slot (1121) is provided on the front end surface of the plug housing (24); a clamping pin (23) capable of cooperating with a curved slot (1122) is provided on the inner wall of the connecting nut (22); the clamping pin (23) is located in the space between two adjacent identification keys (25).

9. A plug according to claim 8, characterized in that: The torsion spring (27) is sleeved on the plug housing (24) and is located between the rear end of the connecting nut (22) and the flange portion of the plug housing (24); one end of the torsion spring (27) is connected to the flange portion, and the other end is connected to the rear end of the connecting nut (22); a retaining spring (28) is provided on the plug housing (24); the connecting nut (22) abuts against the front end of the retaining spring (28) under the action of the axial force provided by the torsion spring (27).

10. A plug according to claim 8, characterized in that: The rear end of the plug housing (24) is threadedly connected with a rear end accessory.

11. A plug according to claim 8, characterized in that: A sealing ring (29) is provided at the front end of the inner cavity of the plug housing (24).

12. A connector, characterized in that: It comprises the socket according to any one of claims 6 to 7 and the plug according to any one of claims 8 to 11.

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