CN110380288B

CN110380288B - Mistake proofing sealed combination plug connector

Info

Publication number: CN110380288B
Application number: CN201910694637.8A
Authority: CN
Inventors: 洪占勇; 王睿; 周丽华; 关绍文
Original assignee: Hefei University of Technology
Current assignee: Hefei University of Technology
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-09-04
Anticipated expiration: 2039-07-30
Also published as: CN110380288A

Abstract

The invention relates to the technical field of electronics, and discloses a mistake-proofing sealing combined plug connector. The mistake-proofing sealing combined plug connector can be divided into a first plug connector, a second plug connector and a third plug connector. The first plug connector, the second plug connector and the third plug connector can be formed by inserting the first shell and the second shell in a matched mode. The first shell is provided with at least one guide groove parallel to the plugging direction of the mistake-proofing sealing combined plug connector; the outer side wall of the guide groove is provided with a through groove communicated with the guide groove. The positions and the number of the guide grooves and the guide blocks on the three groups of plug connectors are different, so that when each plug connector is assembled, only the corresponding first shell and the corresponding second shell can be mutually plugged, and the plug connectors are connected more stably by matching the locking assembly and the adjusting mechanism, so that the dropping of the plug connectors caused by mechanical vibration is avoided, and the connection of the plug connectors is more stable.

Description

Mistake proofing sealed combination plug connector

Technical Field

The invention relates to the technical field of electronics, in particular to a mistake-proofing sealing combined plug connector.

Background

The plug connector of the new energy automobile battery box in the prior art generally distinguishes the matching condition of the male plug connector and the female plug connector by using colors, and the plug connector of the new energy automobile battery box belongs to a high-voltage connector and is adjusted to be orange according to the current national standard requirement, so that the male plug connector and the female plug connector can not be matched in a color mode, new error prevention measures are required, and the occurrence of connection errors is avoided. And the connection between the plug connectors of the traditional automobile plug connector is not stable enough, the sealing performance is poor, and potential safety hazards exist.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides a mistake-proofing sealing combined plug connector which can effectively prevent mistakes, and a guide block can be locked after being inserted into a guide groove, so that the connection of the plug connector is more stable, the dropping of the plug connector caused by mechanical vibration is avoided, and the safety of the plug connector in use is improved.

The invention is realized by adopting the following technical scheme:

a mistake-proof seal combination connector comprising:

the first shell is provided with at least one guide groove parallel to the plugging direction of the mistake-proofing sealing combined plug connector; an annular groove is formed in the inner side wall of the guide groove;

the second shell is adaptive to the first shell in inserting connection, and the interior of the second shell is hollow; at least one guide block which is adaptive to and inserted into at least one guide groove is arranged on the outer side wall of the shell, and a ring groove is formed in the side wall of the guide block facing to the bottom of the corresponding guide groove;

the locking assembly I comprises a rubber ring, a plug groove and a piston, the rubber ring completely covers the notch of the corresponding ring groove, and a pressurizing area is formed between the inner surface of the capsule wall of the rubber ring and the ring groove; the plug groove is accommodated in the corresponding second shell and communicated with the pressurizing area; the piston is accommodated in the plug groove, and a fluid with a preset volume is accommodated between the piston and the plug groove; by adjusting the relative position of the piston in the plug groove, the fluid is squeezed into the pressurizing area, so that the rubber ring is in extrusion fit with the corresponding ring groove after being expanded and deformed; and

the adjusting mechanism comprises a rod body I, a rod body II, a gear, a cushion block and a fixing plate, wherein one end of the rod body I penetrates into the plug groove and is connected with one side, far away from the fluid, of the piston; the first rod body and the piston keep synchronous motion; a first rack is arranged in the extension direction of the rod wall of the first rod body at the bottom of the plug groove; the second rod body is relatively parallel to the first rod body, one end of the second rod body extends along the extending direction of the second rod body and then penetrates out of the second shell, and a second rack is arranged in the extending direction of the rod wall of the second rod body in the second shell; the gear is rotatably arranged between the first rod body and the second rod body, and two ends of the gear are respectively meshed with the first rack and the second rack; the cushion block is fixed at the other end of the second rod body opposite to the first rod body; the fixing plate is positioned between the second rack and the cushion block, and the second rod body movably penetrates through the fixing plate; a first spring is arranged on the outer side wall of the rod body between the fixed plate and the cushion block in a surrounding manner; the two end parts of the rod body, which are positioned outside the shell, enter the second shell through certain extrusion force, so that the corresponding second rack drives the corresponding first rack to move relatively through the gear.

Furthermore, the number of the guide grooves is two, and the two guide grooves are symmetrically arranged on the outer side wall of the first shell.

Further, the number of the guide grooves is three, two of the guide grooves are arranged on one side of the outer side wall of the first housing, and one of the guide grooves is arranged on the opposite side of the outer side wall of the first housing.

Furthermore, the two guide grooves on the same side are designed as a unitary structure.

Further, the fluid is a gas or a liquid having a predetermined volume.

Furthermore, the mistake-proofing sealing combined plug connector also comprises at least one locking component II corresponding to the at least one guide groove; the outer side wall of the guide groove is provided with a through groove communicated with the inside of the guide groove; the end surface of the guide block facing the bottom of the corresponding guide groove is provided with a bead groove; the locking assembly II comprises a top bead and an elastic piece; one end of the elastic piece is fixed in the corresponding bead groove, and the other end of the elastic piece is fixed with the top bead;

the top beads deform corresponding elastic pieces through certain pressing force to shrink in corresponding bead grooves, and when the pressing force is removed, the corresponding elastic pieces release through elasticity to enable the top beads to be embedded in the corresponding through grooves.

Furthermore, the elastic part is a second spring, and the second spring is fixedly connected with the bead groove and the top bead; when the second spring is in a non-compressed state, the bead core of the top bead protrudes out of the notch of the bead groove.

And further, contact blocks are arranged at the two end parts of the rod body outside the shell, and contact grooves matched with the contact blocks are formed in the outer side wall of the shell II.

Further, the notch of the through groove extends divergently towards the direction far away from the bead groove to form a flaring.

Furthermore, a detachable dust cover is arranged on the outer side of the flaring.

The invention has the beneficial effects that:

1. the positions and the number of the guide grooves and the guide blocks on the three groups of plug connectors are different, so that when each plug connector is assembled, only the corresponding first shell and the corresponding second shell can be mutually plugged, and the plug connectors are connected more stably by matching the locking assembly and the adjusting mechanism, so that the dropping of the plug connectors caused by mechanical vibration is avoided, and the connection of the plug connectors is more stable.

2. According to the invention, after the guide block is inserted into the guide groove, the top bead on the guide block can be pushed into the through groove on the guide groove, so that the guide block is further locked in the guide groove, and the safety of the plug connector in use is improved.

3. According to the invention, the edge of the inner side of the first shell is chamfered, and the chamfer of the first shell and the sealing ring inserted into the corresponding position of the outer side of the second shell in the first shell are mutually extruded, so that the relative sealing property between the plug connectors is improved.

Drawings

Fig. 1 is a schematic perspective view of a combined state of a mistake-proofing sealing combined plug connector provided by an embodiment of the invention;

FIG. 2 is a perspective view of an inner housing I of the connector of FIG. 1;

FIG. 3 is a schematic perspective view of a second inner housing of the plug connector of FIG. 1;

FIG. 4 is a schematic cross-sectional view of a portion of FIG. 1;

FIG. 5 is a schematic view of a partial cross-sectional structure of the guide slot and the guide block of FIG. 1 in a combined state;

FIG. 6 is a schematic perspective view of the first inner housing of the second connector of FIG. 1;

FIG. 7 is a schematic perspective view of a second inner housing of the second connector of FIG. 1;

FIG. 8 is a schematic perspective view of the first inner housing of the connector III of FIG. 1;

FIG. 9 is a schematic perspective view of a second inner housing of the third connector in FIG. 1;

FIG. 10 is a schematic view of the structure of the guide block of FIG. 1;

FIG. 11 is a schematic cross-sectional view of the interior of the guide block of FIG. 10;

FIG. 12 is a schematic view of a further state of the guide block of FIG. 10;

fig. 13 is a schematic cross-sectional view of the interior of the guide block of fig. 12.

Description of the main symbols:

1. a first shell; 2. a second shell; 3. a guide groove; 4. a guide block; 5. a through groove; 6. a bead groove; 7. a top bead; 8. a second spring; 9. flaring; 10. a dust cover; 11. a first plug connector; 12. a second plug connector; 13. a third plug connector; 14. a ring groove; 15. a rubber ring; 16. plugging the groove; 17. a piston; 18. a first rod body; 19. a first rack; 20. a gear; 21. a second rod body; 22. a second rack; 23. a fixing plate; 24. cushion blocks; 25. a contact block; 26. a contact groove; 27. and a ring groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, the error-proof sealing combination connector can be divided into a first connector 11, a second connector 12 and a third connector 13. The first plug connector, the second plug connector and the third plug connector can be formed by inserting the first shell 1 and the second shell 2 in a matched mode.

Referring to fig. 2, 6 and 8, the first housing 1 may be a housing of a male connector with a partially hollow interior. The first shell 1 can be made of thermoplastic engineering plastics, the occurrence of electric leakage can be avoided, and the weight of a vehicle body can be reduced. And chamfering the edge of the inner side of the first shell 1.

The first shell 1 is provided with at least one guide groove 3 parallel to the plugging direction of the mistake-proofing sealing combination plug connector. The guide groove 3 in this embodiment is a groove body whose cross section is rectangular and is integrally long-strip-shaped, and the guide groove 3 in other embodiments may also be a groove body whose cross section is triangular and is integrally long-column-shaped, and may also be other groove body structures as long as the structural stability of the guide groove 3 is not affected.

Referring to fig. 4, an annular groove 27 is formed on the inner side wall of the guide groove 3, the annular groove 27 is an arc groove with an inward-concave cross section, and anti-skid lines are distributed on the wall of the annular groove. Referring to fig. 5, a through groove 5 communicated with the inside of the guide groove 3 is formed on the outer side wall of the guide groove 3. In this embodiment, the through groove 5 is a groove body with a circular cross section, and the through groove 5 is located on the guide groove 3 groove body away from the notch of the guide groove 3. The through groove 5 may communicate the inside of the guide groove 3 with the outside.

The notches of the through slots 5 extend divergently away from the bead slots 6 to form flares 9. The flaring 9 is integrally of a circular structure, and internal threads are distributed on the side wall of the flaring 9. The diameter of the flaring 9 is larger than the diameter of the notch of the through slot 5, but the flaring 9 is sized to ensure that the fingers of the worker can extend into the through slot during design.

A detachable dust cover 10 is arranged on the outer side of the flaring 9. In this embodiment, external threads are distributed on the outer periphery of the bottom end of the dust cap 10. Therefore, the installation of the dust cover 10 on the flaring 9 can be realized by screwing the external thread on the dust cover 10 into the internal thread of the flaring 9 in a screwing mode, so that the threaded connection of the dust cover 10 on the flaring 9 is realized, and the installation and the disassembly of the dust cover 10 by people are facilitated.

The top of shield 10 is installed and is taken the piece (not marked), takes the whole semicircular that is of piece, and shield 10 in this embodiment and taking between the piece through welded fastening, in other embodiments shield 10 and taking can also be integral type stamping forming between the piece, as long as do not influence shield 10 and take the stability of being connected between the piece, can also be other connected mode. The anti-skid lines are distributed on the surface of the block, so that the hands of people can be more stable when contacting with the block.

Referring to fig. 3, 7 and 9, the second housing 2 may be a housing of a female connector with a partially hollow interior. The second shell 2 can be made of thermoplastic engineering plastics, so that the electric leakage condition can be avoided, and the weight of the vehicle body can be reduced. In this embodiment, a sealing ring (not shown) is disposed on the outer side of the second housing 2, and when the first housing 1 and the second housing 2 are inserted together, the chamfer of the first housing 1 and the sealing ring at the corresponding position on the outer side of the second housing 2 are pressed against each other, so that the relative sealing performance between the plug connectors is improved, and the higher air tightness and water tightness of the plug connectors are ensured.

The outer side wall of the second shell 2 is provided with at least one guide block 4 which is inserted into at least one guide groove 3 in a matching mode. The guide block 4 in this embodiment is a block body whose section is rectangular and is integrally long-strip-shaped, and the guide block 4 in other embodiments may also be a block body whose section is triangular and is integrally long-column-shaped, and may also be other block body structures as long as the adaptability between the guide block 4 and the guide groove 3 can be satisfied. The guide block 4 and the second housing 2 are fixed by welding, and in other embodiments, the guide block 4 and the second housing 2 can also be fixed by riveting, and other connection modes can be adopted as long as the stability of connection between the guide block 4 and the second housing 2 is not affected.

The guide block 4 is matched with the guide groove 3, and the guide block 4 and the guide groove 3 can be inserted together. Therefore, when people assemble the plug connector, the guide block 4 on the second shell 2 is inserted into the guide groove 3 on the first shell 1, and the plug connection and the fixation between the first shell 1 and the second shell 2 can be realized.

The outer side wall of the guide block 4 facing the corresponding guide groove 3 is provided with a ring groove 14, and the ring groove 14 is a groove body with a circular section. The end surface of the guide block 4 facing the bottom of the corresponding guide groove 3 is provided with a bead groove 6. The ring groove 14 in this embodiment is a groove body with a circular cross section, the bead groove 6 in this embodiment is a groove body with a circular cross section, and the bead groove 6 in other embodiments may also be a groove body with an oval cross section, and may also be of other groove body structures as long as the stability of the overall structure of the bead groove 6 is not affected. The open position of the bead groove 6 corresponds to the open position of the through groove 5.

In the embodiment, after the first shell 1 and the second shell 2 are matched and inserted, the first shell and the second shell are locked through the first locking assembly. In this embodiment, the number of the locking members one corresponding to the number of the guide grooves 3 includes a rubber ring 15, a plug groove 16, a piston 17, and a rod body one 18.

The rubber ring 15 is a ring sleeve and can be made of rubber. The outer surface of the capsule wall of the rubber ring 15 can be distributed with anti-skid textures so as to increase the static friction force when the rubber ring 15 is contacted with the annular groove 27 and ensure that the contact between the rubber ring 15 and the annular groove 27 is more stable.

The rubber ring 15 in this embodiment completely covers the notch of the corresponding ring groove 14. The rubber ring 15 is sleeved outside the ring groove 14, and two opposite side walls of the rubber ring 15 are in sealing connection with the notch of the ring groove 14, so that the rubber ring 15 closes the ring groove 14, and a pressurizing area is formed between the inner side wall of the rubber ring 15 and the groove body of the ring groove 14. In this embodiment, a through hole (not labeled) is disposed on a wall of the ring groove 14 and can communicate with the inside of the second housing 2.

The plug groove 16 is a groove body with a rectangular section, and in other embodiments, the plug groove may be a groove body with a square shape as a whole, and may be a groove body with other structures as long as the stability of the overall structure of the plug groove 16 is not affected. The plug groove 16 is accommodated in the corresponding shell 2, a through hole (not marked) is also formed in the outer wall of the plug groove 16, and the plug groove 16 is communicated with the pressurizing area through a conduit (not marked) connecting the two through holes.

The piston 17 is a flexible block of overall rectangular shape. In other embodiments, the piston 17 may be a flexible block with a square shape as a whole, and may have other structures as long as the adaptability between the piston 17 and the plug groove 16 is not affected. The piston 17 is accommodated in the plug groove 16, and the piston 17 and the plug groove 16 are connected in a sliding sealing manner.

A predetermined volume of fluid is contained between the piston 17 and the plug groove 16. The fluid is a gas with a predetermined volume in this embodiment, and may be a liquid with a predetermined volume in other embodiments, and may be other carriers as long as the relative movement between the piston 17 and the walls of the plug groove 16 is not affected.

Therefore, the staff can press the gas into the pressurizing area through the through hole and the guide pipe after the gas is extruded in the plug groove 16 only by adjusting the relative position of the piston 17 in the plug groove 16, so that the volume of the gas in the pressurizing area is increased, the rubber ring 15 is extruded with the corresponding ring groove 27 after expansion and deformation, the effect of tight connection is achieved, and the connection between the inserted guide block 4 and the guide groove 3 is more stable.

Referring to fig. 10 to 13, in the present embodiment, the locking or releasing of the first locking component is adjusted by an adjusting mechanism, and the adjusting mechanism is accommodated in the second housing 2. The number of the adjusting mechanisms in the embodiment is the same as that of the first locking assemblies. The adjusting mechanism comprises a first rod body 18, a second rod body 21, a gear 20, a fixing plate 23 and a cushion block 24.

The first rod 18 is a rod with a circular cross section, and in other embodiments, the first rod 18 may also be a rod with a square cross section, and may also be other structures as long as the structural stability of the first rod 18 is not affected. One end of the first rod 18 penetrates into the plug groove 16 and is connected with the side of the piston 17 far away from the fluid. The plug slot 16 is provided with a rod hole (not shown), and the rod body 18 is integrally inserted into the rod hole and can move back and forth in the rod hole. The first rod body 18 and the rod hole are sealed to enhance the air tightness in the plug groove 16. In this embodiment, the rod body one 18 and the piston 17 are fixed by welding, and the rod body one 18 and the piston 17 keep moving synchronously.

The wall of the rod body I18 at the bottom of the plug groove 16 is provided with a rack I19 in the extending direction. The first rack 19 is a special gear with teeth distributed on the strip-shaped body. In this embodiment, the rack one 19 and the rod one 18 can be connected by a screw.

The second rod body 21 is a rod body with a circular cross section, and in other embodiments, the second rod body 21 may also be a rod body with a square cross section, and may also be other structures as long as the structural stability of the second rod body 21 is not affected. The second rod 21 is parallel to the first rod 18.

The end part of the second rod body 21, which is positioned outside the second shell 2, is provided with the contact block 25, the contact block 25 is a plate body which is integrally rectangular and flat, the thickness of the contact block 25 is smaller than that of the corresponding side wall on the second shell 2 adjacent to the contact block, and the contact block 25 can increase the contact area between the second rod body 21 and the groove wall of the guide groove 3, so that the stress of the second rod body 21 is more uniform. In this embodiment, the contact block 25 and the second rod 21 are fixed by welding. The outer side wall of the second shell 2 is provided with a contact groove 26. The contact groove 26 is a flat groove body with a rectangular shape as a whole, and the contact groove 26 is matched with the contact block 25, when the second rod body 21 is pressed by the groove wall of the guide groove 3, the contact block 25 can be completely embedded in the contact groove 26.

One end of the second rod body 21 extends along the extending direction and then penetrates through the second shell body 2, and a rod hole (not shown) is also formed in the second shell body 2. And a second rack 22 is arranged in the extension direction of the rod wall of the second rod body 21 in the second shell 2. The second rack 22 is a special gear with teeth distributed on the strip-shaped body. In this embodiment, the second rack 22 and the second rod 21 may be connected by screws. The second rack 22 is opposite to the first rack 19.

The gear is a full-tooth gear which is circular as a whole. The gear is rotatably arranged between the first rod body 18 and the second rod body 21. In this embodiment, the center of the gear 20 is connected to the inner wall side of the second housing through a rotating shaft (not shown), and the gear 20 can rotate relative to the rotating shaft. Two ends of the gear 20 are respectively meshed with the first rack 19 and the second rack 22.

The cushion block 24 is a plate body which is square as a whole, and in other embodiments, the cushion block 24 may also be a plate body which is round as a whole, and may also be of other structures as long as the stability of the whole structure of the cushion block 24 is not affected. In this embodiment, the pad 24 is fixed on the opposite end of the second rod 21 by welding.

The fixing plate 23 is a plate body having a rectangular shape as a whole, and in other embodiments, the fixing plate 23 may also be a plate body having a circular shape as a whole, and may also have other structures as long as the stability of the whole structure of the cushion block 24 is not affected. In this embodiment, the fixing plate 23 is located between the second rack 22 and the cushion block 24, and one end of the fixing plate 23 is fixed to the inner side wall of the second housing 2 by welding. The second rod body 21 movably penetrates through the fixing plate 23. The plate surface of the fixing plate 23 is provided with a rod hole (not shown). The second rod body 21 integrally slides through the rod hole, so that the fixing plate 23 can limit the movement of the second rod body 21.

In this embodiment, a first spring (not labeled) is disposed around the outer side wall of the second rod 21 between the fixing plate 23 and the pad 24. And two ends of the first spring are respectively welded and fixed with the bottom end of the fixing plate 23 and the top end of the cushion block 24, and when the first spring is in a normal state.

With reference to fig. 11 and 13, when the guide block 4 is not inserted into the guide groove 3, the first spring is in a normal state, one end of the second rod 21 away from the pad 24 extends out of the second housing 2, and the second rack 22 is not in contact with the gear 20. During the process of the guide block 4 entering the guide groove 3, the contact block 25 will gradually approach the end of the groove wall of the guide groove 3 until the contact block abuts against the end of the groove wall. When the contact block 25 contacts and fits with the groove wall of the guide groove 3, the contact block 25 is pushed by external force and is extruded by the groove wall of the guide groove 3, so that the part of the rod body two 21 extending out of the shell body two 2 returns to the shell body two 2, at the moment, the spring I between the fixing plate 23 and the cushion block 24 is gradually stretched along with the movement of the rod body two 21, meanwhile, the rack two 22 contacts with the gear 20 and drives the gear 20 to rotate, the gear 20 rotates to drive the rack one 19 to rotate so as to drive the rod body one 18 to keep moving in the direction opposite to the rod body two 21, so that gas contained between the piston 17 and the plug groove 16 is compressed and then is pressed into a pressure charging area through the through hole and the conduit, the volume of the gas in the pressure charging area is increased, and the rubber ring 15 is extruded with the corresponding annular.

When the worker pulls the guide block 4 out of the guide groove 3 by hand, the extrusion force of the groove wall of the guide groove 3 on the contact block 25 is gradually reduced, the elastic force of the first spring is released and gradually returns to the initial state, the distance between the fixing plate 23 and the cushion block 24 is gradually reduced, the second rod body 21 moves in the direction opposite to the previous direction, the second rack 22 drives the gear 20 to rotate, the gear 20 drives the first rod body 18 and the piston 17 to move in the opposite direction through the first rack 19, the gas accommodating volume between the piston 17 and the plug groove 16 is increased, the gas in the charging area is sucked back into the plug groove 16, the volume of the rubber ring 15 is reduced to be separated from the annular groove 27, and interference on the extraction of the guide block 4 from the guide groove 3 is avoided.

Referring to fig. 1 and 5, in the embodiment, when the first housing 1 and the second housing 2 are inserted and fitted, a locking assembly two may be used to further lock the first housing. Wherein, the number of the second locking assemblies corresponds to that of the guide grooves 3. The locking assembly II comprises a top bead 7 and an elastic piece.

The top bead 7 is a sphere which is spherical as a whole, so that the surface of the top bead 7 is smooth. The top bead 7 and the through groove 5 in the embodiment can be clamped with each other. A partial area of the top bead 7 is accommodated in the bead groove 6, and a large area of the top bead 7 protrudes from the notch of the bead groove 6. The sphere diameter of the top bead 7 is smaller than the groove body diameter of the bead groove 6.

The end surface of the top bead 7 far away from the through groove 5 is connected with the groove wall of the bead groove 6 through an elastic piece. In this embodiment, the elastic member is a second spring 8, the second spring 8 is fixedly connected with the bead groove 6 and the top bead 7, that is, one end of the second spring 8 is welded and fixed with the groove wall of the bead groove 6, and the other end of the second spring 8 opposite to the top bead 7 is also welded and fixed with the top bead 7. The second spring 8 can support the top ball 7. When the second spring 8 is in a non-compressed state, the second spring 8 can support the top bead 7, so that the bead center of the top bead 7 always protrudes out of the notch of the bead groove 6, and the top bead 7 can be pushed into the through groove 5 through the second spring 8.

In other embodiments, the elastic member may be an elastic ball, as long as it does not affect the elastic support of the top bead 7 and the state maintenance when the top bead 7 is not pressed, or other elastic members.

Referring to fig. 5, the opposite end of the elastic member is fixed with a top bead 7; the top beads 7 are deformed by a certain pressing force to be contracted in the corresponding bead grooves 6, and when the pressing force is removed, the top beads 7 are embedded in the corresponding through grooves 5 by the corresponding elastic members through elastic force release.

Referring to fig. 1 and 5, the second locking assembly can work in the following manner: when the first shell 1 and the second shell 2 are in an unconnected state, the second spring 8 is in a non-compressed state, and the center of the top ball 7 is set to protrude out of the notch of the ball groove 6. When the second shell 2 is inserted into the first shell 1, the groove wall of the guide groove 3 outside the bead groove 6 can extrude the spherical surface of the top bead 7, so that the second spring 8 connected with the top bead 7 is compressed, the top bead 7 temporarily enters the bead groove 6 along with the second spring 8, and the normal insertion of the guide block 4 in the guide groove 3 is ensured. Along with the movement of the guide block 4 in the guide groove 3, when the top bead 7 moves to the through groove 5, the top bead 7 is jacked into the through groove 5 under the elastic force releasing action of the second spring 8, so that the locking between the top bead 7 and the through groove 5 is realized, the splicing between the guide blocks 4 inserted into the guide groove 3 is more stable, the first shell 1 and the second shell 2 after the splicing are further locked, and the dropping between the splicing parts caused by mechanical vibration is avoided;

when people need extract casing two 2 from casing 1 in, hold between the fingers and take the piece rotatory in order to take out shield 10 from flaring 9 with pinching, stretch into flaring 9 with the finger and extrude the pearl 7 of top of card in leading to groove 5, make with the pearl 7 of top of being impressed in the pearl groove 6, then take guide block 4 out from guide way 3 to along with locking Assembly state change, can realize the separation between casing two 2 and casing 1, convenient and practical.

It should be noted that, when the guide block 4 is completely inserted into the guide groove 3, the second locking component can further lock the inserted guide groove 3 and the guide block 4. Especially, when the rubber ring 15 in the first locking assembly is accidentally damaged, the guide block 4 and the guide groove 3 can be effectively prevented from being loosened, so that the guide block 4 and the guide groove 3 are more firmly and reliably connected.

In the present embodiment, the difference between the first connector 11, the second connector 12, and the third connector 13 is: the number and the positions of the guide grooves 3 on the first housing 1 and the guide blocks 4 on the second housing 2 are different from each other for different plug connectors.

Referring to fig. 2 and 3, the number of the guide grooves 3 in the first connector 11 is two, and the number of the guide blocks 4 is two, that is, two opposite sides of the outer side wall of the first housing 1 are provided with one guide groove 3 along the extending direction of two ends of the first housing 1. Two opposite sides of the outer side wall of the second shell 2 are provided with a guide block 4 along the extending direction of two ends of the second shell 2.

Referring to fig. 6 and 7, the number of the guide grooves 3 in the second connector 12 is three, and the number of the guide blocks 4 is three, that is, two of the guide grooves 3 are disposed on one side of the outer side wall of the first housing 1, and one of the guide grooves 3 is disposed on the opposite side of the outer side wall of the first housing 1. The guide block 4 on the second shell 2 is arranged corresponding to the position of the guide groove 3 on the first shell 1.

Referring to fig. 8 and 9, the number of the guide grooves 3 and the guide blocks 4 in the third connector 13 is the same, and the third connector differs from the second connector in that the positions of the guide grooves 3 and the guide blocks 4 in the third connector 13 are exactly opposite to the positions of the guide grooves 3 and the guide blocks 4 in the second connector 12.

Therefore, the first connector 11, the second connector 12 and the third connector 13 of different types are used as one connector combination, so that when each connector is assembled, only the corresponding first shell 1 and the corresponding second shell 2 can be mutually connected, and the connectors have the error-proofing characteristic.

The positions and the number of the guide grooves and the guide blocks on the three groups of plug connectors are different, so that when each plug connector is assembled, only the corresponding first shell and the corresponding second shell can be mutually plugged, and the plug connectors are connected more stably by matching the locking assembly and the adjusting mechanism, so that the dropping of the plug connectors caused by mechanical vibration is avoided, and the connection of the plug connectors is more stable. According to the invention, after the guide block is inserted into the guide groove, the top bead on the guide block can be pushed into the through groove on the guide groove, so that the guide block is further locked in the guide groove, and the safety of the plug connector in use is improved. According to the invention, the edge of the inner side of the first shell is chamfered, and the chamfer of the first shell and the sealing ring inserted into the corresponding position of the outer side of the second shell in the first shell are mutually extruded, so that the relative sealing property between the plug connectors is improved.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A mistake proofing seal combination plug connector, characterized by that, it includes:

2. The mistake-proof, sealing and combination plug connector of claim 1 wherein the number of the guide slots is two, and the two guide slots are symmetrically arranged on the outer side wall of the first housing.

3. The error-proofing, sealing and assembling plug of claim 1 wherein said guide slots are provided in three numbers, two of said guide slots being provided on one side of an outer sidewall of said first housing, and one of said guide slots being provided on an opposite side of an outer sidewall of said first housing.

4. The error-proofing, sealing and assembling plug of claim 3 wherein said two guide slots on the same side are of unitary construction.

5. The error-proofing sealed modular jack of claim 1 wherein said fluid is a gas or liquid having a predetermined volume.

6. The mistake-proof, sealed modular plug of claim 1 further comprising at least one locking member two corresponding to the at least one guide slot; the outer side wall of the guide groove is provided with a through groove communicated with the inside of the guide groove; the end surface of the guide block facing the bottom of the corresponding guide groove is provided with a bead groove; the locking assembly II comprises a top bead and an elastic piece; one end of the elastic piece is fixed in the corresponding bead groove, and the other end of the elastic piece is fixed with the top bead;

7. The mistake proofing sealing combination plug connector of claim 6, wherein the elastic member is a second spring, and the second spring is fixedly connected with the bead groove and the top bead; when the second spring is in a non-compressed state, the bead core of the top bead protrudes out of the notch of the bead groove.

8. The mistake proofing sealing combination plug connector of claim 1, wherein the two ends of the rod body positioned outside the housing are provided with contact blocks, and the outer side wall of the second housing is provided with contact grooves matched with the contact blocks.

9. The error-proofing, sealing and assembling plug of claim 6 wherein the notches of said through slots extend divergently away from said bead slots to form flares.

10. The error-proofing, sealing and assembling plug of claim 9 wherein a removable dust cap is mounted to the outside of said flared end.