CN212935041U - Locking mechanism of high-voltage connector - Google Patents

Abstract

The utility model discloses a locking mechanism of a high-voltage connector, which comprises a socket shell and a plug shell matched with the socket shell, wherein the surface of the socket shell is provided with a first-stage hanging platform and a second-stage hanging platform, the outside of the plug shell is provided with a first-stage hook matched with the first-stage hanging platform and a second-stage hook matched with the second-stage hanging platform, the first-stage hook is positioned at the outside of the second-stage hook, the end of the first-stage hook is provided with a first unlocking part, the end of the second-stage hook is provided with a second unlocking part, a chute is arranged between the first-stage hook and the second-stage hook, a third-stage locking block is penetrated in the chute and is provided with, the plug comprises a connecting wall and a stop block, wherein a guide boss is arranged on the outer side of the tail end of the connecting wall, a locking plate hook is arranged on the outer side of the middle position of the connecting wall, an accommodating cavity for accommodating the locking plate hook is arranged on the side portion of the plug shell, and two blocking ribs for guiding the guide boss are arranged on the socket shell at intervals. The utility model discloses, can solve and produce electric spark or other separation faults when breaking away from.

Description

Locking mechanism of high-voltage connector

Technical Field

The utility model relates to a locking mechanism, particularly, the utility model relates to a be applied to locking mechanism of high-pressure connector of new forms of energy electric automobile etc..

Background

The connector generally comprises a plug and a socket, and the high-voltage connector of the new energy electric vehicle generally requires a high-voltage interlocking function (HVIL), namely a control signal is required to control a high-voltage loop, the high-voltage loop is connected before the signal loop when the connection is carried out, and the high-voltage loop starts to be electrified only after the control signal is conducted; in a similar way, the signal circuit is disconnected before the high-voltage circuit is disconnected, and the control signal is used for physically connecting and then disconnecting the high-voltage circuit after the high-voltage circuit is disconnected. The realization of the functions is realized by mainly adjusting the contact length of the power terminal and the signal terminal, and the designed length of the high-voltage contact element is longer than that of the signal contact element, so that the use requirement that the high-voltage contact element is firstly contacted and then disconnected when the connector is plugged in and separated is met. However, in the actual operation process, because the separation speed is fast, the signal contact piece and the power contact piece are almost simultaneously disconnected, which may cause an accident due to energy release of the high-voltage line, and it is seen that the electrical connector of the primary locking mechanism cannot meet the use requirements of the new energy automobile.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a locking mechanism of high voltage connector is provided, its electric spark and other trouble that can avoid the electric connector to produce because of fast when high pressure separates.

In order to solve the technical problem, the utility model discloses a following technical scheme: the utility model provides a locking mechanism of high-voltage connector, including socket casing and with the plug casing of socket casing adaptation, socket casing be provided with one-level on the surface and hang the platform with the second grade, the outside of plug casing be provided with the one-level couple that the platform matches and with the second grade couple that the platform matches are hung to the second grade, the one-level couple is located the outside of second grade couple, the end of one-level couple has the first part of unlocking that can exert lever action force to it, the end of second grade couple has the second part of unlocking that can exert lever action force to it, be provided with the spout between one-level couple and the second grade couple, it has tertiary locking piece to penetrate in the spout, tertiary locking piece has third part of unlocking, by the both sides of third part of unlocking respectively towards the connecting wall that the spout extends and by the third part of unlocking centre is outstanding and can be right first part of unlocking locks dead dog, the terminal outside of connecting wall is provided with the guide boss, the intermediate position outside of connecting wall is provided with the locking plate couple, the lateral part of plug housing is provided with and holds the chamber of acceping of locking plate couple, the interval is provided with and is used for the guide on the socket casing two fender muscle of guide boss.

Preferably, the first unlocking portion and the second unlocking portion are both provided with anti-slip protrusions.

As the preferred technical scheme, the number of the locking plate hooks is two, and the two locking plate hooks are arranged at intervals.

As the preferred technical scheme, a transition bulge is arranged between the two locking plate hooks.

As a preferable technical solution, the number of the accommodating cavities is three.

Compared with the prior art, the beneficial effects of the utility model reside in that: when the plug shell and the socket shell are not matched, the locking plate hooks and the like on the two connecting arms are positioned in the corresponding accommodating cavities of the plug shell in a fixed state under the natural state of the three-stage locking block; when the plug shell and the socket shell are matched, the three-stage locking block can be pushed into the plug shell to complete locking under the matching action of the guide boss and the blocking rib. The structure enables the operation to be simpler, and the connector damage caused by manual forced insertion can be avoided. The utility model has the advantages of safety, reliability, long service life and the like.

Drawings

Fig. 1 is a schematic perspective view of a locking mechanism of a high-voltage connector according to the present invention;

FIG. 2 is a perspective view of the three-stage locking block of FIG. 1;

FIG. 3 is a perspective view of the plug housing of FIG. 1 with the tertiary lock block not shown;

FIG. 4 is a cross-sectional view of the plug housing of FIG. 1 in a top view;

FIG. 5 is a cross-sectional view of FIG. 1 with the tertiary lock block in a condition to deaden the secondary hanger;

FIG. 6 is a state diagram corresponding to FIG. 5, with the tertiary lock block unlocking the secondary hook;

FIG. 7 is a state diagram of the unlocking of the primary hook based on FIG. 6;

fig. 8 is a state diagram of the secondary hook also unlocked based on fig. 7.

Description of the reference numerals

1-a socket housing; 2-a plug housing; 3-three-stage locking blocks; 4-first-level hanging table; 5-blocking ribs; 6-secondary hanging table; 7-guiding the boss; 8-a concave groove; 9-a first lock plate hook; 10-a transition bump; 11-a second locking plate hook; 12-a first housing chamber; 13-a second housing chamber; 14-a third containing cavity; 15-a third unlocking portion; 16-a first unlocking portion; 17-a second unlocking portion; 18-first-level hooks; 19-secondary hook; 20-a stopper; 21-chute.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific examples, which should not be construed as limiting the invention.

Referring to fig. 1-4, the locking mechanism of the high-voltage connector of the present invention includes a socket housing 1 and a plug housing 2 adapted to the socket housing 1. The socket shell 1 is provided with a first-level hanging table 4 and a second-level hanging table 6 on the surface, and the height of the first-level hanging table 4 is larger than that of the second-level hanging table 6. The outside of plug housing 2 is provided with one-level couple 18 that matches with one-level string platform 4 and hangs the second grade couple 19 that platform 6 matches with the second grade, and one-level couple 18 is located the outside of second grade couple 19, like this, can be so that one-level couple 18 can hang on one-level string platform 4, and second grade couple 19 can hang on second grade string platform 6. In addition, the contact sequence of the first-level hook 18 and the second-level hook 19 in the contact process with the first-level hanging table 4 and the second-level hanging table 6 is provided, the distance between the first-level hanging table 4 and the second-level hanging table 6 is A, the distance between the first-level hook 18 and the second-level hook 19 is B, and the sizes of the A and the B are different. Normally, the secondary hook 19 is first hooked to the secondary hanging platform 6, and then the primary hook 18 is hooked to the primary hanging platform 4, as shown in the figure.

As shown in fig. 1-4, the end of the primary hook 18 has a first unlocking portion 16 capable of applying a lever force to the primary hook, that is, when the first unlocking portion 16 is pressed, the primary hook 18 can be lifted up so as to be conveniently separated from the primary hanging platform 4; the end of the secondary hook 19 is provided with a second unlocking part 17 which can apply lever force to the secondary hook, namely, when the second unlocking part 17 is pressed, the secondary hook 19 can be lifted, so that the secondary hook can be conveniently separated from the secondary hanging platform 6. Both the first unlocking portion 16 and the second unlocking portion 17 are provided with anti-slip projections, so that the first unlocking portion 16 and the second unlocking portion 17 can be operated easily. The first-stage hook 18 and the second-stage hook 19 are connected to the plug housing 2 through bridge arms, and the first-stage hook 18 and the second-stage hook 19 can be respectively tilted up by pressing the first unlocking portion 16 and the second unlocking portion 17, so that an unlocking effect is achieved.

A sliding groove 21 is arranged between the first-stage hook 18 and the second-stage hook 19, and as shown in the figure, the sliding groove 21 is positioned between the first-stage hook 18 and the second-stage hook 19 in the thickness direction.

As shown in fig. 2-4, the third-stage locking block 3 penetrates into the sliding slot 21, that is, the third-stage locking block 3 can be pre-installed in the plug housing 2 and made into an assembly with the plug housing 2, and the third-stage locking block 3 can slide back and forth in the sliding slot 21. The third-stage locking block 3 is provided with a third unlocking part 15, a connecting wall extending from two sides of the third unlocking part 15 to the sliding groove 21 respectively, and a stop 20 protruding from the middle of the third unlocking part 15 and capable of locking the first unlocking part 16, wherein a guide boss 7 is arranged on the outer side of the tail end of the connecting wall, a locking plate hook is arranged on the outer side of the middle position of the connecting wall, an accommodating cavity for accommodating the locking plate hook is arranged on the side part of the plug shell 2, and two blocking ribs 5 for guiding the guide boss 7 are arranged on the socket shell 1 at intervals.

Shown in the figure, the number of locking plate couple is two, and first locking plate couple 9 and second locking plate couple 11 promptly, first locking plate couple 9 sets up with second locking plate couple 11 interval, is provided with transition arch 10 between first locking plate couple 9 and the second locking plate couple 11. A concave groove 8 is arranged between the first lock hook 9 and the guide boss 7. As shown in the figure, the connecting arm comprises a guide boss 7, a concave groove 8, a first locking piece hook 9, a transition protrusion 10 and a second locking piece hook 11 in sequence from the tail end to the end close to a third unlocking part 15.

The number of the accommodating cavities is three, namely a first accommodating cavity 12, a second accommodating cavity 13 and a third accommodating cavity 14. In the state shown in fig. 4 where the plug housing 2 is not inserted into the receptacle housing 1, the guide boss 7 extends inside the plug housing 2, the first latch hook 9 is located inside the second receiving cavity 13, and the second latch hook 11 and the transition protrusion 10 are located inside the third receiving cavity 14. At this time, the first locking piece hook 9 is located in the second accommodating cavity 13, the second locking piece hook 11 and the transition protrusion 10 are located in the third accommodating cavity 14, and the first locking piece hook 9 and the second locking piece hook 11 are blocked and cannot slide in the front and back directions, that is, the three-stage locking piece 3 cannot move in the front and back directions. When the plug housing 2 and the socket housing 1 are matched, the guide boss 7 of the third-stage locking block 3 is blocked by the blocking rib 5 on the socket housing 1 and is pulled, because of the action of force, two connecting arms of the third-stage locking block 3 shrink towards the inner side, and at the moment, the first lock piece hook 9 is pulled out of the second accommodating cavity 13 along with the shrinkage. After the plug housing 2 and the socket housing 1 are matched, namely the first-level hook 18 is engaged with the first-level hanging table 4, and after the second-level hook 19 is engaged with the second-level hanging table 6, the third-level locking block 3 is pushed into the plug housing 2 to complete locking, at the moment, the first lock piece hook 9 enters the first accommodating cavity 12, and the first lock piece hook is shown in fig. 5.

Referring to fig. 6-8, the unlocking process of the present invention is: as shown in fig. 6, the first-stage hanging table 4 and the first-stage hook 18 are first disengaged, specifically, the third unlocking unit 15 slides the third-stage locking unit 3, so that the first unlocking unit 16 is pressed after the stopper 20 of the third-stage locking unit 3 blocks the first unlocking unit 16, and the first-stage hook 18 is tilted by the lever principle. As shown in fig. 7, the plug housing 2 is pulled out for a certain distance, the secondary hanging platform 6 is matched with the secondary hook 19, the plug housing 2 is blocked, at this time, the second unlocking portion 17 is pressed, the secondary hook 19 is tilted through the lever principle, then the plug housing 2 is pulled out, and the unlocking state is shown in fig. 8.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.

Claims (5)

1. The utility model provides a locking mechanism of high-voltage connector, a serial communication port, including socket shell and with the plug housing of socket shell adaptation, socket shell is provided with one-level on the surface and hangs the platform and the platform is hung to the second grade, plug housing's outside be provided with one-level hang the platform matching the one-level couple and with the second grade is hung the second grade couple that the platform matches, the one-level couple is located the outside of second grade couple, the end of one-level couple has the first part of unblocking that can exert lever effort to it, the end of second grade couple has the second part of unblocking that can exert lever effort to it, the one-level couple with be provided with the spout between the second grade couple, it has tertiary locking piece to penetrate in the spout, tertiary locking piece have the third part of unblocking, by the both sides of third part of unblocking are respectively towards the connecting wall that the spout extends and by the third part of unblocking is outstanding and can be right first part of unblocking is locked The dog, the terminal outside of connecting wall is provided with the guide boss, the intermediate position outside of connecting wall is provided with the locking plate couple, the lateral part of plug housing is provided with and holds the chamber of acceping of locking plate couple, the interval is provided with and is used for the guide on the socket casing two fender muscle of guide boss.

2. The locking mechanism of a high-voltage connector according to claim 1, wherein the first unlocking part and the second unlocking part are provided with anti-slip protrusions.

3. The locking mechanism of a high voltage connector according to claim 1, wherein the number of said locking plate hooks is two, and said two locking plate hooks are spaced apart.

4. A locking mechanism for a high voltage connector according to claim 3, wherein a transition protrusion is provided between two of said locking plate hooks.

5. The locking mechanism of a high-voltage connector according to claim 4, wherein the number of said receiving cavities is three, and three receiving cavities are provided at intervals.

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