CN219180864U - Anti-loose waterproof electric connector with secondary locking structure - Google Patents

Abstract

The utility model provides a locking waterproof electric connector with a secondary locking structure, which comprises a socket, a plug and a tail accessory, wherein the front end of the plug is locked with the socket once through bayonet connection, and the tail end of the plug is fixedly connected with the tail accessory. The plug comprises a plug shell, and an anti-loosening arc body and an anti-loosening step are arranged on the outer wall of the plug shell. The outside cover of plug housing front end is equipped with the coupling nut subassembly, and the coupling nut subassembly includes coupling nut, processing has on the coupling nut rear end inner wall with locking arc body and locking step matched with locking slider structure, processing has on the coupling nut front end inner wall with socket complex arc groove. The connecting nut, the anti-loosening slide block structure, the anti-loosening arc body and the anti-loosening step are matched to form a secondary locking anti-loosening structure. The anti-loosening waterproof electric connector designed by the utility model can solve the problems of weak locking and anti-loosening functions and protection functions of a circular high-current connector, and can ensure that the circular high-current connector meets the use requirements of occasions such as high vibration, impact, wading and the like.

Description

Anti-loose waterproof electric connector with secondary locking structure

Technical Field

The utility model relates to the technical field of design of anti-loosening waterproof electric connectors, in particular to an anti-loosening waterproof electric connector with a secondary locking structure.

Background

At present, the anti-loosening structure of high-current/high-power products, such as circular high-current electric connectors, comprises a plurality of forms of threaded connection fuse, bayonet connection compression corrugated springs, plug with spring claws and the like, and the protection level is mostly dustproof or rainproof. The anti-loosening and protecting measures of the high-current/high-power electric connector with the structure can meet the requirements in a general environment, but the anti-loosening function and the protecting function are weak in a severe environment and cannot meet the requirements, and meanwhile, if a high-current product with the water inlet preventing function is required, the high-current electric connector is improved and upgraded in the later period according to the requirements of customers.

Along with the increasing wide application of high-power/high-current electric connectors in the military and civil power fields, the requirements of the application fields such as war carts and the like on product looseness prevention and water inflow prevention are higher, the requirements of the high-power/high-current electric connectors on the condition of vibration, impact and the like on the product looseness prevention are met, the high reliability of connection is ensured, and the requirements of reaching over IP67 level waterproof under the conditions of wading, water immersion and the like are met.

Therefore, a high-power waterproof electrical connector with a secondary locking mechanism is required to meet market demands.

Disclosure of Invention

The utility model designs an anti-loosening waterproof electric connector with a secondary locking structure in order to solve the problems that the locking and anti-loosening functions and the protection functions of a circular high-current connector are weak, and further the use requirements of occasions such as high vibration, impact and wading cannot be met.

The technical scheme for realizing the aim of the utility model is as follows: an anti-loose waterproof electric connector with a secondary locking structure comprises a socket, a plug and a tail accessory, wherein the front end of the plug is locked with the socket once through bayonet connection, and the tail end of the plug is fixedly connected with the tail accessory.

The plug comprises a plug shell, and an anti-loosening arc body and an anti-loosening step are arranged on the outer wall of the plug shell.

The plug comprises a plug shell, and is characterized in that a connecting nut assembly is sleeved outside the front end of the plug shell, the connecting nut assembly comprises a connecting nut, an anti-loosening slide block structure matched with the anti-loosening arc body and the anti-loosening step is machined on the inner wall of the rear end of the connecting nut, and an arc-loosening groove matched with the socket is machined on the inner wall of the front end of the connecting nut.

The connecting nut, the anti-loosening slide block structure, the anti-loosening arc body and the anti-loosening step are matched to form a secondary locking anti-loosening structure.

In one embodiment of the connecting nut and the anti-loosening slide block structure, a slotted slideway is processed on the side wall of the rear end of the connecting nut, and the anti-loosening slide block structure comprises a lock, a slide block and a spring.

The locking device comprises a slot-shaped slideway, a locking slide block, a spring, a first rivet, a spring, a connecting nut and a locking slide block structure, wherein the locking slide block is arranged on the slot-shaped slideway, the rear end of the locking slide block is fixed with the rear end of the slide block through the first rivet, the spring is fixed at the front end of the slide block, a spring accommodating cavity is formed at the tail end of the locking slide block, and the locking slide block structure and the connecting nut form a spring combined sliding structure of the electric connector.

In one embodiment of the plug, a first sealing groove is formed in the outer wall of the plug housing, and a first sealing ring in contact with the square disc housing on the socket is placed in the first sealing groove, and in this embodiment, the first sealing ring is preferably an O-ring.

In another embodiment of the plug, a pin insulator is arranged between the rear section of the insertion pin in the plug housing and the plug housing, and a first retainer ring is arranged at the position where the front end of the pin insulator contacts the insertion pin.

In one embodiment of the socket, the socket comprises a square disk shell from outside to inside, a hole insulator, and a jack assembly, and the hole insulator is fixed in the square disk shell through a compression nut.

The sealing gasket is arranged on the outer wall of the front end of the square disc shell, a corrugated spring is arranged between the rear end of the square disc shell and the hole insulator, and a second check ring is arranged at the contact position of the tail of the jack assembly and the tail of the hole insulator.

In an improved embodiment of the square disc shell, a roller is fixed at the front end of the square disc shell through a second rivet, and the roller is matched with a rotary arc groove formed in the side wall of the front end of the connecting nut.

In one embodiment of the tail accessory, the tail accessory includes a locking structure including a threaded locking hole machined into the accessory cup, and a bolt secures the accessory cup to the plug housing via the threaded locking hole.

In an improved embodiment of the tail accessory, a second sealing groove is machined on the inner wall of the accessory cup-shaped pipe of the tail accessory, and a second sealing ring for sealing the plug shell and the accessory cup-shaped pipe is placed in the second sealing groove, and in this embodiment, the second sealing ring is preferably an O-ring.

In an improved embodiment of the tail accessory, a gasket and a rubber ring for pressing and fixing the pin cable are arranged between the accessory cup pipe of the tail accessory and the pin cable.

In an improved embodiment of the tail accessory, an anti-slip heat-shrinkable groove is arranged outside the accessory cup-shaped pipe of the tail accessory, and a heat-shrinkable sleeve is arranged on the anti-slip heat-shrinkable groove.

Compared with the prior art, the utility model has the beneficial effects that: the anti-loosening waterproof electric connector with the secondary locking structure is characterized in that a bayonet mode is adopted for connecting a plug and a socket, on one hand, the structures such as a connecting screw cap, an anti-loosening mechanism, an anti-loosening arc rotation, a waterproof sealing groove and the like are designed on a plug shell, so that the quick connection, secondary anti-loosening and waterproof functions of a product can be realized, and the use requirements of high vibration, impact, water prevention and quick plugging occasions are met; on the other hand, the tail accessory is designed to be in a structure with a threaded anti-loosening hole, an O-shaped sealing ring groove, a gasket and a rubber ring, so that the tail accessory is convenient to loosen, seal and fix wires during use; in the third aspect, the outer part of the accessory cup-shaped pipe of the tail accessory is designed with the heat-shrinkable sleeve for treatment, so that the waterproof function of the tail outlet can be further improved.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described.

FIG. 1 is a schematic view of a plug and tail accessory of a loose-proof and waterproof electrical connector with a secondary locking structure in an embodiment;

FIG. 2 is a schematic view of a plug housing according to an embodiment;

FIG. 3 is a schematic view of a secondary lock and anti-loosening structure of a cage nut assembly in accordance with an embodiment;

FIG. 4 is a schematic view of a coupling nut in an embodiment;

FIG. 5 is a schematic diagram of a receptacle in an embodiment;

FIG. 6 is a schematic view of a square disk housing in an embodiment;

FIG. 7 is a schematic illustration of a tail attachment in an embodiment;

1, a plug shell; 2. a coupling nut assembly; 3. a contact pin; 4. a first seal ring; 5. a first retainer ring; 6. a needle insulator; 7. a compacting sleeve; 8. a sleeve; 9. tail accessories; 10. the second check ring; 11. a hole insulator; 12. square disc shell; 13. a jack assembly; 14. a wave spring; 15. a sealing gasket; 16. a compression nut; 17. a connecting nut; 171. arc rotating grooves; 18. a spring; 19. locking; 20. a first rivet; 21. a slide block; 22. a thread anti-loosening hole; 23. a second seal groove; 24. an accessory cup tube; 25. a gasket; 26. a rubber ring; 28. an end cap; 29. a connecting piece; 31. a wire hole; 32. slotted shaped slides; 33. a roller; 34. a second rivet; 36. an anti-loosening arc body; 37. an anti-loosening step; 38. a first seal groove; 39. an anti-slip heat shrinkage groove; 91. and a second sealing ring.

Detailed Description

The utility model will be further described with reference to specific embodiments, and advantages and features of the utility model will become apparent from the description. These examples are merely exemplary and do not limit the scope of the utility model in any way. It will be understood by those skilled in the art that various changes and substitutions of details and forms of the technical solution of the present utility model may be made without departing from the spirit and scope of the present utility model, but these changes and substitutions fall within the scope of the present utility model.

The embodiment discloses locking waterproof electric connector with secondary locking structure, and electric connector includes socket, plug, afterbody annex 9, carries out primary locking through bayonet connection between plug front end and the socket, and the plug end is with afterbody annex 9 fixed connection.

Referring to fig. 1, 2 and 3, the plug comprises a plug housing 1, and an anti-loosening arc body 36 and an anti-loosening step 37 are arranged on the outer wall of the plug housing 1. The outside cover of plug housing 1 front end is equipped with coupling nut subassembly 2, coupling nut subassembly 2 includes coupling nut 17, the processing has on the coupling nut 17 rear end inner wall with locking arc body 36 with locking step 37 matched with locking slider structure, the processing has on the coupling nut 17 front end inner wall with socket-outlet complex arc groove 171.

In one embodiment of the above-mentioned coupling nut 17 and the anti-loosening slider structure, as shown in fig. 1 and 4, a slotted slideway 32 is formed on the sidewall of the rear end of the coupling nut 17, and the anti-loosening slider structure includes a latch 19, a slider 21 and a spring 18. Specifically, the latch 19 is disposed on the slot-shaped slideway 32, the rear end of the latch 19 is fixed with the rear end of the slider 21 via the first rivet 20, the spring 18 is fixed at the front end of the slider 21, the spring accommodating cavity is formed at the ends of the latch 19, the slider 21 and the connecting nut 17, and the anti-loose slider structure and the connecting nut 17 form a spring combined sliding structure of the electric connector.

In another embodiment of the above-mentioned plug, as shown in fig. 1 and fig. 4, a first sealing groove 38 is provided on the outer wall of the plug housing 1, and a first sealing ring 4 contacting with the connection nut assembly 2 is placed in the first sealing groove 38, where in this embodiment, the first sealing ring 4 is preferably an O-ring.

In another embodiment of the above plug, a pin insulator 6 is disposed between the rear section of the insert pin 3 in the plug housing 1 and the plug housing 1, and a first retainer ring 5 is disposed at a position where the front end of the pin insulator 6 contacts the insert pin 3.

The socket comprises a square disc shell 12, a hole insulator 11 and a jack assembly 13 from outside to inside, wherein the hole insulator 11 is fixed in the square disc shell 12 through a compression nut 16, the hole insulator 11 is fixed in the square disc shell 12 through the compression nut 16, the hole insulator 11 can be prevented from falling out of the square disc shell 12, and the insulation effect between the hole insulator 11 and the square disc shell 12 and the jack assembly 13 can be ensured.

In one embodiment of the square disk housing 12, as shown in fig. 5, a sealing gasket 15 is disposed on the outer wall of the front end of the square disk housing 12, and after the socket is connected with the plug, the plug housing 1 contacts with the sealing gasket 15, so that the contact tightness between the socket and the plug can be ensured, and water is prevented from penetrating from the contact surface of the socket and the plug.

The corrugated spring 14 is arranged between the rear end of the square disc shell 12 and the hole insulator 11, the second check ring 10 is arranged at the contact position of the tail part of the jack assembly 13 and the tail part of the hole insulator 11, and the second check ring 10 can play a role in fixing the jack assembly 13 and the hole insulator 11, so that the insulation effect is improved.

In another modified embodiment of the square disk housing 12, as shown in fig. 6, a roller 33 is fixed at the front end of the square disk housing 12 via a second rivet 34, and the roller 33 is matched with a curved groove 171 formed on the side wall of the front end of the connecting nut 17. The roller 33 rolls in along the notch of the arc rotary groove 171 during installation to connect the socket with the plug, and the roller 33 can improve the vibration resistance and shock resistance of the electric connector, and has high-reliability anti-loosening performance.

In the anti-loosening waterproof electric connector designed by the utility model, the connecting screw cap 17, the anti-loosening sliding block structure, the anti-loosening arc body 36 and the anti-loosening step 37 are matched to form a secondary locking anti-loosening structure. During installation, when the socket is clamped with the plug, the roller 33 on the socket is screwed into the arc-shaped groove 171 for primary locking, meanwhile, the connecting screw cap 17 is rotated to enable the anti-loosening slider structure to be screwed into the anti-loosening arc-shaped body 36 and the anti-loosening step 37, the anti-loosening slider structure formed by the lock 19, the slider 21 and the spring 18 is matched with the slotted hole-shaped slideway 32 on the connecting screw cap 17, and the anti-loosening slider structure is screwed into the anti-loosening arc-shaped body 36 and the anti-loosening step 37 on the plug shell 1 for secondary locking, so that the socket is prevented from being separated from the plug.

Referring to fig. 7, the tail accessory 9 includes an accessory cup 24, an end cover 28 is disposed at the end of the accessory cup 24, a wire hole 31 through which a pin cable (not shown in the drawing) passes is formed in the middle of the end cover 28, and the accessory cup 24 and the end cover 28 are fixed together by a connector 29.

In an improved embodiment of the tail attachment 9, the tail attachment 9 is designed with a locking structure for sealing and fixing and sealing the cable when the tail is connected with the housing. Referring to fig. 7, the locking structure comprises a threaded locking hole 22 formed on an accessory cup 24, and a bolt fixes the accessory cup 24 on the plug housing 1 through the threaded locking hole 22, so as to ensure the connection stability of the tail accessory 9 and the plug housing 1.

In a modified embodiment of the tail accessory 9, as shown in fig. 7, a second sealing groove 23 is formed on the inner wall of the accessory cup 24 of the tail accessory 9, and a second sealing ring 91 for sealing the plug housing 1 and the accessory cup 24 is placed in the second sealing groove 23.

In a modified embodiment of the tail attachment 9, as shown in fig. 7, a spacer 25 and a rubber ring 26 for pressing and fixing the pin cable are provided between the attachment cup 24 of the tail attachment 9 and the pin cable (not shown in the drawings).

In a modified embodiment of the tail accessory 9, as shown in fig. 7, an anti-slip heat-shrinkable groove 39 is arranged on the outer part of the accessory cup 24 of the tail accessory 9, and a heat-shrinkable sleeve is arranged on the anti-slip heat-shrinkable groove 39.

In a modified embodiment of the above-described plug and tail attachment 9, as seen in fig. 1, a compression sleeve 7 and a sleeve 8 are provided between the plug housing 1 and the pin 3 and between the attachment cup 24 and the pin 3 from outside to inside at the junction of the plug housing 1 and the attachment cup 24.

The anti-loosening waterproof electric connector with the secondary locking structure is characterized in that a bayonet mode is adopted for connecting a plug and a socket, on one hand, the structures such as a connecting screw cap, an anti-loosening mechanism, an anti-loosening arc rotation, a waterproof sealing groove and the like are designed on a plug shell, so that the quick connection, secondary anti-loosening and waterproof functions of a product can be realized, and the use requirements of high vibration, impact, water prevention and quick plugging occasions are met; on the other hand, the tail accessory is designed to be in a structure with a threaded anti-loosening hole, an O-shaped sealing ring groove, a gasket and a rubber ring, so that the tail accessory is convenient to loosen, seal and fix wires during use; in the third aspect, the external part of the tail shell of the tail accessory is designed with the heat-shrinkable sleeve for treatment, so that the waterproof function of the tail outlet can be further improved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (10)

1. The utility model provides a locking waterproof electric connector with secondary locking structure, electric connector includes socket, plug, afterbody annex (9), carries out primary locking through bayonet connection between plug front end and the socket, plug end and afterbody annex (9) fixed connection, its characterized in that: the plug comprises a plug shell (1), wherein an anti-loosening arc body (36) and an anti-loosening step (37) are arranged on the outer wall of the plug shell (1);

the anti-loosening plug is characterized in that a connecting nut assembly (2) is sleeved outside the front end of the plug shell (1), the connecting nut assembly (2) comprises a connecting nut (17), an anti-loosening sliding block structure matched with the anti-loosening arc body (36) and the anti-loosening step (37) is processed on the inner wall of the rear end of the connecting nut (17), and an arc-loosening groove (171) matched with the socket is processed on the inner wall of the front end of the connecting nut (17);

the connecting nut (17), the anti-loosening slide block structure, the anti-loosening arc body (36) and the anti-loosening step (37) are matched to form a secondary locking anti-loosening structure.

2. The loose-fitting waterproof electrical connector of claim 1, wherein: the side wall of the rear end of the connecting nut (17) is provided with a slotted slideway (32), and the anti-loosening sliding block structure comprises a lock (19), a sliding block (21) and a spring (18);

the locking device is characterized in that the locking device (19) is arranged on the slotted slideway (32), the rear end of the locking device (19) is fixed with the rear end of the sliding block (21) through a first rivet (20), the spring (18) is fixed at the front end of the sliding block (21), a spring accommodating cavity is formed at the tail end of the locking device (19), the sliding block (21) and the connecting nut (17), and the locking sliding block structure and the connecting nut (17) form a spring combined sliding structure of the electric connector.

3. The loose-fitting waterproof electrical connector of claim 1 or 2, wherein: the plug is characterized in that a first sealing groove (38) is formed in the outer wall of the plug shell (1), and a first sealing ring (4) which is in contact with the square disc shell (12) on the socket is arranged in the first sealing groove (38).

4. The loose-fitting waterproof electrical connector of claim 1, wherein: a needle insulator (6) is arranged between the rear section of the inserting needle (3) in the plug housing (1) and the plug housing (1), and a first check ring (5) is arranged at the contact position of the front end of the needle insulator (6) and the inserting needle (3).

5. The loose-fitting waterproof electrical connector of claim 1, wherein: the socket comprises a square disc shell (12), a hole insulator (11) and a jack assembly (13) from outside to inside, wherein the hole insulator (11) is fixed in the square disc shell (12) through a compression nut (16);

the sealing gasket (15) is arranged on the outer wall of the front end of the square disc shell (12), a corrugated spring (14) is arranged between the rear end of the square disc shell (12) and the hole insulator (11), and a second check ring (10) is arranged at the contact position of the tail of the jack assembly (13) and the tail of the hole insulator (11).

6. The loose-fitting waterproof electrical connector of claim 5, wherein: the front end of the square disc shell (12) is fixed with a roller (33) through a second rivet (34), and the roller (33) is matched with a rotary arc groove (171) formed in the side wall of the front end of the connecting nut (17).

7. The loose-fitting waterproof electrical connector of claim 1, wherein: the tail accessory (9) comprises an anti-loosening structure, the anti-loosening structure comprises a threaded anti-loosening hole (22) which is formed in an accessory cup pipe (24), and a bolt fixes the accessory cup pipe (24) on the plug shell (1) through the threaded anti-loosening hole (22).

8. The loose-fitting waterproof electrical connector of claim 1 or 7, wherein: a second sealing groove (23) is formed in the inner wall of an accessory cup pipe (24) of the tail accessory (9), and a second sealing ring (91) for sealing the plug shell (1) and the accessory cup pipe (24) is arranged in the second sealing groove (23).

9. The loose-fitting waterproof electrical connector of claim 8, wherein: a gasket (25) and a rubber ring (26) for pressing and fixing the pin cable are arranged between the accessory cup-shaped pipe (24) of the tail accessory (9) and the pin cable.

10. The loose-resistant and waterproof electrical connector as claimed in claim 7 or 9, wherein: an anti-slip heat-shrinkable groove (39) is formed in the outer portion of the accessory cup-shaped pipe (24) of the tail accessory (9), and a heat-shrinkable sleeve is arranged on the anti-slip heat-shrinkable groove (39).

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