CN216214504U

CN216214504U - Connecting switch with two-stage unlocking function

Info

Publication number: CN216214504U
Application number: CN202122055636.4U
Authority: CN
Inventors: 袁自友; 闫丁丁; 向省骏; 田磊
Original assignee: Xiamen Weien Electric Co ltd Chengdu Branch
Current assignee: Xiamen Weien Electric Co ltd Chengdu Branch
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-04-05
Anticipated expiration: 2031-08-30

Abstract

The utility model relates to a connection switch with a two-stage unlocking function, which comprises: the socket comprises a socket shell, a plug shell and a handle; a first locking part is arranged between the socket shell and the plug shell; the handle is arranged on the plug shell in a rotating way, the handle is also provided with an approximately arc-shaped guide groove, and the socket shell is provided with a convex part; when the handle rotates automatically, the bulge moves along the guide groove and drives the plug shell to relatively approach or leave the socket shell; be equipped with secondary latch segment on the handle, be equipped with second locking portion between handle and the plug casing, be equipped with third locking portion between secondary latch segment and the plug casing. This scheme has set up three locking portion on connecting switch, has avoided unexpected disconnection, has ensured the stability that electric elements connects, avoids user's maloperation, and simple structure is small, convenience of customers operates.

Description

Connecting switch with two-stage unlocking function

Technical Field

The utility model relates to the technical field of connectors, in particular to a connection switch with a two-stage unlocking function.

Background

The connector is widely applied to various occasions, is generally used for transmitting electric energy, data signals and the like, and has higher requirements on internal water resistance, signal interference and connection stability. Along with the stricter and stricter requirements for realizing the functions of the electric automobile and the higher and higher performance requirements, the connector in the circuit transmission loop is used as the basis for reliable connection and needs to meet the continuously updated use requirements. The requirement for reliability of the connector for transmitting the large current in the key loop is stricter, and a manual Maintenance Switch (MSD) plays an important role as a main switch for controlling the on-off of a main circuit. However, the manual maintenance switch used at present often has only one locking mechanism, and such a structure is easy to cause accidental disconnection of the connector, and the manual maintenance switch cannot be reliably fixed after the electrical elements are connected, and the reliability of current transmission is insufficient.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a connection switch having a two-stage unlocking function.

A connection switch with a two-stage unlocking function, comprising: the socket comprises a socket shell, a plug shell and a handle; a first locking part is arranged between the socket shell and the plug shell; the handle is arranged on the plug shell in a rotating manner, the handle is also provided with a guide groove which is approximately arc-shaped, and the socket shell is provided with a convex part; when the handle rotates automatically, the lug boss moves along the guide groove and drives the plug shell to relatively approach or leave the socket shell; the handle is provided with a secondary locking block, a second locking portion is arranged between the handle and the plug shell, and a third locking portion is arranged between the secondary locking block and the plug shell.

In order to quickly and stably fix the handle on the plug shell so as to firmly lock the plug and the socket, the second locking part comprises a handle convex block arranged on the handle and a first convex block arranged on the outer side wall of the plug shell; in the process that the plug shell is inserted into the socket shell, the handle rotates to a preset angle, and the first protruding block and the handle protruding block are mutually locked after being mutually interfered.

In order to set double fixation so as to rapidly and stably fix the handle on the plug shell and firmly lock the plug and the socket, a handle guide hole is formed in the handle, an elastic arm is arranged on the secondary locking block, and a locking convex block is arranged on the elastic arm; a locking block accommodating groove is formed beside the first protruding block; the elastic arm of the secondary locking block passes through the handle guide hole; the outer side wall of the plug shell is provided with a second protruding block; after the secondary locking block moves for a preset distance along the handle guide hole, the locking convex block and the second convex block interfere with each other and then slide into the locking block accommodating groove, and the first convex block is locked.

Wherein, for quick unblock, avoid the mistake to touch the unblock, first locking portion is including the locking buckle and press the shell fragment, when pressing the shell fragment and being pressed, the locking buckle is by the unblock.

In order to enable the handle to rotate smoothly and enable the plug shell and the socket shell to be separated to a secondary locking position through rotating the handle during unlocking, rotating shafts are arranged on two sides of the plug shell, rotating holes are formed in two sides of the handle, the rotating shafts penetrate through the rotating holes, and the handle can rotate around the rotating shafts; the two sides of the socket shell are provided with the convex parts; in the process that the handle rotates around the rotating shaft, the protruding portion slides in the guide groove and drives the plug shell to relatively approach or leave the socket shell.

In order to distinguish the electric energy transmission connection and the signal connection of large voltage, the two connections are respectively and sequentially disconnected, and a high-voltage interlocking function is realized;

when the socket shell and the plug shell are plugged and locked, the second locking part and the third locking part are locked, the plug signal terminal is conducted with the socket signal terminal, and the large-voltage plug is also conducted with the large-voltage slot;

when the socket shell and the plug shell are separated to the secondary locking position, the first locking portion is locked, the second locking portion and the third locking portion are unlocked, the plug signal terminal is disconnected with the socket signal terminal, and the large-voltage plug is connected with the large-voltage slot.

In order to prevent the device using the connection switch with the two-stage unlocking function from being damaged by a transient large current, a fuse is arranged on the large-voltage plug.

In order to achieve more stable connection and to lock the socket signal terminal and the plug signal terminal with each other, the socket shell is further provided with a buckle cover and a tail protective cover, and the large voltage slot is connected with the tail protective cover through the buckle cover; the socket shell is also provided with a signal terminal locking block; the signal terminal locking block is clamped with the socket signal terminal, and the socket signal terminal is reinforced and locked on the socket shell.

Wherein, in order to promote this connecting switch's that has two stage unblock functions leakproofness, be equipped with a plug mounting panel in the plug casing, big voltage plug reaches plug signal terminal set up in on the plug mounting panel, the plug mounting panel with the junction of plug casing is equipped with the plug sealing washer.

In order to avoid the falling of the plug sealing ring, the sealing performance of the connecting switch with the two-stage unlocking function is further improved, a sealing ring groove is formed in the plug mounting plate, and an anti-falling bulge is formed in the plug sealing ring; when the plug mounting plate is installed in the plug shell, the anti-falling bulge is embedded in the sealing ring groove.

According to the technical scheme, the three locking parts are arranged on the connecting switch, so that accidental disconnection is avoided, and the connection stability of the electrical elements is guaranteed. When the switch needs to be disconnected, the secondary locking block is unlocked from the plug shell, and then the handle is pulled, so that the second locking part is unlocked. The handle can rotate at the moment, the socket shell and the plug shell can be separated by a preset distance, then the first unlocking part is unlocked, the socket shell and the plug shell are completely separated, and the plug shell and the socket shell are separated. Accordingly, the process of locking the plug housing and the socket housing is reversed. This scheme can effectively lock plug housing and socket casing, avoids user's maloperation, and simple structure is small, convenience of customers operation.

Drawings

FIG. 1 is an exploded view of an embodiment of a connection switch with two-stage unlocking function according to the present invention;

FIG. 2 is a schematic view of a portion of the handle and the secondary locking block of the connection switch with two-stage unlocking function according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of the second locking segment and the third locking segment of the present invention when both are unlocked;

FIG. 4 is a schematic cross-sectional view of the second locking segment of the present invention when locked and the third locking segment is unlocked;

FIG. 5 is a schematic cross-sectional view of the second locking segment and the third locking segment of the present invention when both are locked;

FIG. 6 is a schematic cross-sectional view of the second locking segment and the third locking segment of the present invention when both are locked;

FIG. 7 is a schematic structural diagram of a plug housing of another embodiment of a connection switch with a two-stage unlocking function according to the present invention;

FIG. 8 is a schematic structural view of the plug housing, the plug mounting plate and the plug sealing ring according to the present invention;

FIG. 9 is a schematic cross-sectional view of the connection switch of the present invention having a two-stage unlocking function;

FIG. 10 is a partial cross-sectional view of the connection switch of the present invention having a two-stage unlocking function;

FIG. 11 is a schematic cross-sectional view of the interior of the receptacle housing of the present invention with the signal terminal locking block unlocked;

FIG. 12 is a schematic cross-sectional view of the interior of the receptacle housing after the signal terminal locking blocks are locked in accordance with the present invention;

FIG. 13 is a diagram illustrating a structure and a conducting state of a state one in the unlocking process according to the present invention;

FIG. 14 is a diagram illustrating the structure and the conduction status of the second state in the unlocking process according to the present invention;

FIG. 15 is a schematic diagram of the structure and the conduction status of state three in the unlocking process of the present invention;

fig. 16 is a schematic diagram of the structure and the conduction status of the state four in the unlocking process of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a socket housing; 11. a large voltage slot; 12. a socket signal terminal; 13. a boss portion; 2. a plug housing; 21. a high voltage plug; 22. a plug signal terminal; 23. a first raised block; 24. a second raised block; 25. pressing the elastic sheet; 26. a rotating shaft; 27. a locking piece accommodating groove; 28. secondary locking limit protrusions; 3. A handle; 31. a handle bump; 32. a handle guide hole; 33. a guide groove; 34. rotating the hole; 4. a secondary locking block; 41. locking the raised blocks; 5. covering; 6. a tail protective cover; 7. a signal terminal locking block; 8. A plug mounting plate; 81. a seal ring groove; 9. a plug seal ring; 91. the anti-falling bulge.

Detailed Description

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is apparent that the specific details set forth in the following description are merely exemplary of the utility model, which can be practiced in many other embodiments that depart from the specific details disclosed herein. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

In an embodiment, referring to fig. 1 to 14, a connection switch with a two-stage unlocking function includes: the socket comprises a socket shell 1, a plug shell 2 and a handle 3; a first locking part is arranged between the socket shell 1 and the plug shell 2; the handle 3 is arranged on the plug shell 2 in a rotating way, the handle 3 is also provided with a guide groove 33 which is approximately arc-shaped, and the socket shell 1 is provided with a convex part 13; when the handle 3 rotates, the convex part 13 moves along the guide groove 33 and drives the plug shell 2 to relatively approach or leave the socket shell 1; be equipped with secondary latch segment 4 on the handle 3, be equipped with second locking portion between handle 3 and plug housing 2, be equipped with third locking portion between secondary latch segment 4 and plug housing 2.

According to the technical scheme, the three locking parts are arranged on the connecting switch, so that accidental disconnection is avoided, and the connection stability of the electrical elements is guaranteed. When the switch needs to be switched off, the locking between the secondary locking block 4 and the plug housing 2 is firstly unlocked, and then the handle 3 is pulled, so that the second locking part is unlocked. At this time, the handle 3 may be rotated, the socket housing 1 and the plug housing 2 may be separated by a predetermined distance, and then the first unlocking part is unlocked to completely separate the socket housing 1 and the plug housing 2, thereby completing the separation of the plug housing 2 and the socket housing 1. Accordingly, the process of locking the plug housing 2 and the socket housing 1 is reversed. This scheme can effectively lock plug housing 2 and socket housing 1, avoids user's maloperation, and simple structure is small, convenience of customers operation.

Referring to fig. 3 to 5, in the present embodiment, in order to quickly and stably fix the handle 3 to the plug housing 2 so as to firmly lock the plug and the socket, the second locking portion includes a handle protrusion 31 disposed on the handle 3 and a first protrusion 23 disposed on an outer sidewall of the plug housing 2; in the process of inserting the plug housing 2 into the socket housing 1, the handle 3 rotates to a preset angle, and the first protruding block 23 and the handle protruding block 31 are mutually locked after being mutually interfered.

Referring to fig. 3 to 6, further, in order to provide double fixing for fixing the handle 3 to the plug housing 2 rapidly and stably and preventing the handle 3 from rotating continuously, the handle 3 is provided with a handle guide hole 32, the secondary locking block 4 is provided with an elastic arm, and the elastic arm is provided with a locking protrusion block 41; a locking block accommodating groove 27 is also formed beside the first protruding block 23; the elastic arm of the secondary locking block 4 passes through the handle guide hole 32; a second convex block 24 is arranged on the outer side wall of the plug shell 2; after the secondary locking block 4 moves a preset distance along the guide hole of the handle 3, the locking protrusion 41 and the second protrusion 24 interfere with each other and then slide into the locking block accommodating groove 27, and lock the first protrusion 23.

It should be noted that, after the locking protrusion 41 slides into the locking protrusion receiving groove 27, the first protrusion 23 is pressed to prevent the first protrusion from elastically deforming, and thus the switch is locked.

Referring to fig. 7, in another embodiment of the present invention, a secondary locking protrusion 28 is further disposed on the plug housing 2, and when the handle 3 is subjected to an external force, the secondary locking protrusion 28 cooperates with the handle protrusion 31 and the locking protrusion 41, so that the first protrusion 23 has no deformation space and cannot be removed from the locking position. And only when the secondary locking block 4 moves along the guide hole of the handle 3 for a preset distance to withdraw, the handle 3 is subjected to external force, and the first protruding block 23 deforms under the action of the external force, so that the third locking part is unlocked. The first protruding block 23 is limited jointly by the secondary locking limiting protrusion 28 matching with the handle protruding block 31 and the locking protruding block 41, so that the first protruding block is not easy to loosen, and the reliability of the switch is enhanced.

Specifically, the first locking portion includes a locking buckle and a pressing elastic piece 25, and when the pressing elastic piece 25 is pressed, the locking buckle is unlocked. The first locking part is unlocked by pressing the elastic sheet 25, and the plug and the socket cannot be continuously separated by pushing the plug shell 2 upwards by the distance on the premise that the second locking part and the third locking part are unlocked, so that the function of avoiding mistaken touch can be achieved. Of course, the first locking portion may have other structures, and the structure is not limited to the description in the embodiment.

Referring to fig. 11 to 14, in order to smoothly rotate the handle 3 and separate the plug housing 2 from the receptacle housing 1 to the secondary locking position by rotating the handle 3 during unlocking, rotating shafts 26 are disposed on both sides of the plug housing 2, rotating holes 34 are disposed on both sides of the handle 3, the rotating shafts 26 are inserted into the rotating holes 34, and the handle 3 can rotate around the rotating shafts 26; the two sides of the socket shell 1 are provided with convex parts 13; during the rotation of the handle 3 around the rotation shaft 26, the protrusion 13 slides in the guiding groove 33 and drives the plug housing 2 to relatively move closer to or away from the socket housing 1.

It can be understood that, in the present embodiment, in the process of locking the plug housing 2 and the socket housing 1, the handle 3 is inclined to rotate in one direction to drive the plug housing 2 to be inserted into the socket housing 1; in the unlocking process of the plug shell 2 and the socket shell 1, the handle 3 inclines to rotate in the opposite direction to drive the plug shell 2 to be pulled out of the socket shell 1.

In the technical scheme of the utility model, a large voltage slot 11 and a socket signal terminal 12 are arranged in a socket shell 1, and a large voltage plug 21 and a plug signal terminal 22 are arranged in a plug shell 2;

when the socket shell 1 and the plug shell 2 are plugged and locked, the second locking part and the third locking part are locked, the plug signal terminal 22 is communicated with the socket signal terminal 12, and the large voltage plug 21 is also communicated with the large voltage slot 11;

when the socket housing 1 and the plug housing 2 are separated to the secondary locking position, the first locking portion is locked, the second locking portion and the third locking portion are unlocked, the plug signal terminal 22 is disconnected from the socket signal terminal 12, and the large voltage plug 21 is connected with the large voltage slot 11.

It can be understood that, in the embodiment, through the arrangement of the large voltage interface and the signal interface, the electric energy transmission connection and the signal connection of the large voltage are distinguished, two types of connection are respectively and sequentially disconnected, the high-voltage interlocking function is realized, and the high-voltage interlocking device can be widely applied to a manual Maintenance Switch (MSD).

On the basis of the present embodiment, in order to prevent the connection switch having the two-stage unlocking function from being damaged by a transient large current, the large-voltage plug 21 is provided with a fuse. When the passing current is too large, the fuse is disconnected, a high-voltage loop of the protection vehicle can be protected from being damaged, and the vehicle is prevented from being dangerous.

Referring to fig. 8, 9 and 10, the socket housing 1 is further provided with a buckle cover 5 and a tail protection cover 6, and the large voltage slot 11 is connected with the tail protection cover through the buckle cover 5; the socket shell 1 is also provided with a signal terminal locking block 7; the signal terminal locking block 7 is clamped with the socket signal terminal 12, and the socket signal terminal 12 is fixedly locked on the socket shell 1. It should be noted that the socket signal terminal 12 is originally fixed in the socket housing 1, and the signal terminal locking block 7 further locks the socket signal terminal 12, so as to increase the holding force of the socket signal terminal 12 in the socket housing 1, thereby achieving a better connection effect.

In this embodiment, referring to fig. 6 and 7, in order to improve the sealing performance of the connection switch with the two-stage unlocking function, a plug mounting plate 8 is disposed in the plug housing 2, the large voltage plug 21 and the plug signal terminal 22 are disposed on the plug mounting plate 8, and a plug sealing ring 9 is disposed at a connection position between the plug mounting plate 8 and the plug housing 2. Likewise, a sealing structure is also arranged in the socket housing 1 to further improve the sealing and waterproof performance of the switch.

Further, in order to avoid the falling of the plug sealing ring 9 and further improve the sealing performance of the connection switch with the two-stage unlocking function, the plug mounting plate 8 is provided with a sealing ring groove 81, and the plug sealing ring 9 is provided with an anti-falling bulge 91; when the plug mounting plate 8 is mounted in the plug housing 2, the anti-drop protrusion 91 is embedded in the seal ring groove 81.

Referring to fig. 11 to 14, a part a of the drawings is a high voltage connection (i.e. a connection between a high voltage plug and a high voltage slot), and a part B of the drawings is a signal connection (i.e. a connection between a plug signal terminal and a socket signal terminal), where fig. 11 is an initial state one, and a plug-and-socket separation operation flow of the connection switch with the two-stage unlocking function is as follows:

firstly, the secondary locking block 4 of the product is pulled upwards, at the moment, the second convex block 24 is separated from the locking convex block 41, the third locking part is unlocked, and at the moment, the switch is in the state II as shown in fig. 12; the secondary locking block 4 and the handle 3 are continuously pushed together, at the moment, the handle 3 rotates around the rotating shaft 26, at the moment, the first convex block 23 is separated from the handle convex block 31, and the second locking part is unlocked; rotating the handle 3 until the handle is not movable, separating the plug housing 2 and the socket housing 1 by a certain distance, disconnecting the plug signal terminal 22 and the socket signal terminal 12, and exposing the pressing spring 25, wherein the switch is in a state III as shown in fig. 13; finally, the pressing spring piece 25 on the plug housing 2 is pressed down, and the plug housing 2 is pushed out backwards until the plug housing 2 and the socket housing 1 are completely separated, the large-voltage plug 21 and the large-voltage slot 11 are also disconnected, and at this time, the switch is in the state four as shown in fig. 14.

It can be understood that the locking operation and the unlocking operation of the plug housing 2 and the socket housing 1 are performed in opposite steps, and are not described herein again.

The manual maintenance switch with the two-stage unlocking function provided by the utility model has the main beneficial effects that:

the high-voltage interlocking structure is used for controlling the power contact and disconnection of high voltage, and the signal terminal locking block 7 is added to be used as a secondary locking structure, so that the holding force in the socket shell 1 after the signal connection structure is installed is increased, and the reliable switching functions of manual connection and large-current breaking are achieved;

the plug mounting plate 8 is provided with the plug sealing ring 9 and the anti-falling bulge 91, so that the plug sealing ring 9 is prevented from falling off from a preset position during plugging, and the overall waterproof performance is enhanced;

when the plug shell 2 is combined with the socket shell 1, the three locking structures can effectively lock the plug shell 2 and the socket shell 1, so that misoperation of a user is avoided, the structure is simple, the size is small, and the operation of the user is facilitated.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, various changes, substitutions and alterations can be made without departing from the spirit and scope of the utility model. Therefore, the protection scope of the present invention should be subject to the claims.

Claims

1. A connection switch having a two-stage unlocking function, comprising: the socket comprises a socket shell, a plug shell and a handle; a first locking part is arranged between the socket shell and the plug shell; the handle is arranged on the plug shell in a rotating manner, the handle is also provided with a guide groove which is approximately arc-shaped, and the socket shell is provided with a convex part; when the handle rotates automatically, the lug boss moves along the guide groove and drives the plug shell to relatively approach or leave the socket shell; the handle is provided with a secondary locking block, a second locking portion is arranged between the handle and the plug shell, and a third locking portion is arranged between the secondary locking block and the plug shell.

2. The connection switch with two-stage unlocking function according to claim 1, wherein the second locking portion includes a handle protrusion block provided on the handle and a first protrusion block provided on an outer side wall of the plug housing; in the process that the plug shell is inserted into the socket shell, the handle rotates to a preset angle, and the first protruding block and the handle protruding block are mutually locked after being mutually interfered.

3. The connection switch with the two-stage unlocking function according to claim 2, wherein a handle guide hole is formed on the handle, an elastic arm is arranged on the secondary locking block, and a locking protrusion block is arranged on the elastic arm; a locking block accommodating groove is formed beside the first protruding block; the elastic arm of the secondary locking block passes through the handle guide hole; the outer side wall of the plug shell is provided with a second protruding block; after the secondary locking block moves for a preset distance along the handle guide hole, the locking convex block and the second convex block interfere with each other and then slide into the locking block accommodating groove, and the first convex block is locked.

4. The connection switch with the two-stage unlocking function according to claim 1, wherein the first locking portion comprises a locking buckle and a pressing elastic piece, and when the pressing elastic piece is pressed, the locking buckle is unlocked.

5. The connection switch with the two-stage unlocking function according to claim 1, wherein rotation shafts are arranged on two sides of the plug housing, rotation holes are arranged on two sides of the handle, the rotation shafts are arranged in the rotation holes in a penetrating manner, and the handle can rotate around the rotation shafts; the two sides of the socket shell are provided with the convex parts; in the process that the handle rotates around the rotating shaft, the protruding portion slides in the guide groove and drives the plug shell to relatively approach or leave the socket shell.

6. The connection switch with the two-stage unlocking function according to any one of claims 1 to 5, wherein a large-voltage slot and a socket signal terminal are arranged in the socket shell, and a large-voltage plug and a plug signal terminal are arranged in the plug shell;

7. The connection switch with two-stage unlocking function according to claim 6, wherein a fuse is provided on the large-voltage plug.

8. The connection switch with the two-stage unlocking function according to claim 6, wherein a buckle cover and a tail protection cover are further arranged on the socket shell, and the large-voltage slot is connected with the tail protection cover through the buckle cover; the socket shell is also provided with a signal terminal locking block; the signal terminal locking block is clamped with the socket signal terminal, and the socket signal terminal is reinforced and locked on the socket shell.

9. The connection switch with two-stage unlocking function according to claim 6, wherein a plug mounting plate is arranged in the plug housing, the large voltage plug and the plug signal terminal are arranged on the plug mounting plate, and a plug sealing ring is arranged at the joint of the plug mounting plate and the plug housing.

10. The connection switch with the two-stage unlocking function according to claim 9, wherein a seal ring groove is formed on the plug mounting plate, and an anti-falling protrusion is formed on the plug seal ring; when the plug mounting plate is installed in the plug shell, the anti-falling bulge is embedded in the sealing ring groove.