CN113659392A

CN113659392A - Secondary locking mechanism and secondary locking connector

Info

Publication number: CN113659392A
Application number: CN202111008197.XA
Authority: CN
Inventors: 袁自友; 向省骏; 闫丁丁
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: 2021-11-16

Abstract

The invention relates to a secondary locking mechanism and a secondary locking connector, which comprise a socket shell, a plug shell and a secondary locking block; the socket shell is provided with a first stop block, a second stop block and an auxiliary convex block; the plug shell is provided with a main locking platform and a guide hole, and the main locking platform is provided with a first hook and a second hook; the secondary locking block is provided with a cantilever which can be inserted into the guide hole, and the cantilever is provided with a hook lug; when the socket shell and the plug shell are locked, the first hook is locked on the first stop block, and the hook convex block passes through the guide hole and is locked on the auxiliary convex block; when the socket shell and the plug shell are separated by a preset distance, the second hook is locked on the second stop block. The scheme realizes the functions of locking the main lock, delaying unlocking and locking for the second time through the combination of a simple structure. The arm of force of secondary latch segment inserts in the guiding hole on the plug housing, can avoid the maloperation to let the position of secondary latch segment take place to remove, has avoided the problem of mistake unblock. The scheme solves the problem that the existing connector is insufficient in reliability and safety.

Description

Secondary locking mechanism and secondary locking connector

Technical Field

The invention relates to the technical field of connectors, in particular to a secondary locking mechanism and a secondary locking connector.

Background

Since the beginning of the twentieth century, there have been many innovations and advances in the history of automobile development, which have led to the maturity and excellence of automobile connector technology today, and these advances have always centered around aspects such as engine power and performance, safety, convenience in driving space, driving quality, fuel source, vehicle-mounted data relay, in-vehicle entertainment, and the like. The transmission of the data is continuously updated without disconnecting the connector technology, and the connector not only needs to ensure the safety, stability and reliability of data transmission and power transmission between the battery and other voltage devices when the high-voltage terminal is connected; at the same time, new requirements are also made on the connection reliability of the voltage control loop. In the process of connecting and locking and unlocking and separating the connector, in order to achieve better connection safety and unlocking safety, the related connector development standards all provide the requirement of secondary locking for the reliable connection of the connector; and also puts forward the requirement of high-voltage interlocking in the process of plugging and breaking.

At present, the existing products only solve the problems of reliable connection and secondary locking on a high-voltage circuit, high-voltage and low-voltage interlocking, and reliable contact length guarantee of the contact of the high-voltage circuit and the low-voltage circuit of the connector, and still need to be further improved and perfected.

Disclosure of Invention

In view of this, it is necessary to provide a secondary locking mechanism and a secondary locking connector for solving the problem of insufficient reliability and safety of the conventional connector.

On one hand, the invention provides a secondary locking mechanism, which comprises a socket shell, a plug shell and a secondary locking block; the socket shell is detachably connected with the plug shell, and the plug shell is detachably connected with the secondary locking block;

the socket shell is provided with a first stop block, a second stop block and an auxiliary protruding block; the plug shell is provided with a main locking platform and a guide hole, and the main locking platform is provided with a first hook and a second hook; the secondary locking block is provided with a cantilever which can be inserted into the guide hole, and the cantilever is provided with a hook lug; when the socket shell and the plug shell are locked, the first hook is locked on the first stop block, and the hook lug penetrates through the guide hole and is locked on the auxiliary convex block; when the socket shell and the plug shell are separated by a preset distance, the second hook is locked on the second stop block.

In order to respectively unlock the first hook and the first stop block and the second hook and the second stop block and better realize a delayed unlocking function, a first unlocking button and a second unlocking button are arranged on the main locking and hanging table; when the first unlocking button is pressed, the first hook and the first stop block are unlocked; when the second unlocking button is pressed, the second hook and the second stop block are unlocked.

Wherein, in order to avoid two unlocking button settings to cause the mistake to touch together, realize the unblock respectively, first unlocking button with second unlocking button set up in different positions on the platform is hung to the master lock.

In order to conveniently and respectively unlock the two unlocking buttons, the movement directions of the first hook and the second hook during unlocking are opposite, and accidental touch is avoided, a lever supporting point connected with the plug shell is arranged in the middle of the main locking platform, the first hook, the second hook and the second unlocking button are all arranged at one end of the lever supporting point, and the first unlocking button is arranged at the other end of the lever supporting point; when the first unlocking button and the second unlocking button are pressed, the main hanging table rotates around the lever supporting point in opposite directions respectively.

The connector unlocking method comprises the following steps that in the connector unlocking process, secondary locking block unlocking, first hook unlocking and second hook unlocking are required to be sequentially carried out, in order to avoid mistakenly touching a first unlocking button before the secondary locking block is unlocked, a groove which is sunken towards the rear end direction is formed in the secondary locking block; when the cantilever passes through the guide hole from the rear end to the front end and the hook lug is locked on the auxiliary convex block, one end of the first unlocking button on the main locking and hanging table is embedded in the groove.

In order to fix the secondary locking block at the preset position, a limiting notch matched with the hook lug is arranged in the guide hole; when the secondary locking block is in the pre-installation position, the hook convex block is clamped in the limiting notch.

The auxiliary hook lug can be pushed into a preset locking position through the auxiliary lug block after the plug shell is inserted into the socket shell. The end surface of the rear end of the auxiliary convex block is an inclined surface capable of guiding the hook convex block; when the secondary locking block moves from the installation position to the front end, the hook convex block is locked on the auxiliary convex block after being guided by the inclined surface.

Wherein, in order to retreat spacing in the direction to the secondary latch segment, be equipped with the protruding piece of barb on the secondary latch segment, be equipped with on the plug housing with the protruding piece matched with stopping mouth of barb, the secondary latch segment shifts backward when presetting the position, the protruding piece of barb with stopping mouth looks butt.

The plug shell is provided with a limiting block for limiting the secondary locking block in the advancing direction, and the secondary locking block is abutted to the limiting block when being moved forwards to a preset position.

In another aspect, the present invention further provides a secondary locking connector, including: the male insertion core, the female insertion core and the secondary locking mechanism are arranged in the shell; the male plug core is arranged in the plug shell, and the female plug core is arranged in the socket shell; when the socket shell and the plug shell are locked, the male plug core is connected and conducted with the female plug core.

The technical scheme of the invention realizes the functions of locking the main lock, delaying unlocking and locking for the second time through the combination of a simple structure. Meanwhile, the position of the delayed unlocking can be adjusted according to the distance between the effective contact lengths of the male insertion core and the female insertion core in the connector, and the cores with different contact lengths are matched. When the secondary locking device is used, the force arm of the secondary locking block is inserted into the guide hole in the plug shell, so that the situation that the position of the secondary locking block is moved due to misoperation can be avoided, and the problem of mistaken unlocking is avoided. The technical scheme solves the problems of insufficient reliability and safety of the existing connector, and is simple, effective and low in cost.

Drawings

FIG. 1 is a general schematic view of a first embodiment of the secondary locking mechanism of the present invention;

FIG. 2 is a top view of the secondary locking mechanism of FIG. 1;

FIG. 3 is a cross-sectional view of the secondary locking mechanism shown in FIG. 1;

FIG. 4 is a schematic cross-sectional view of the secondary locking mechanism of the present invention with the secondary locking block in a predetermined position during the locking process;

FIG. 5 is a schematic cross-sectional view of the secondary locking mechanism of the present invention during locking with the plug housing inserted into the receptacle housing;

FIG. 6 is a schematic cross-sectional view of the secondary locking block locked to the auxiliary protrusion block during the locking process of the secondary locking mechanism of the present invention;

FIG. 7 is a schematic cross-sectional view of the secondary locking mechanism of the present invention with the first hook and hook tab unlocked and the second hook locked during unlocking;

FIG. 8 is an overall schematic view of a second embodiment of the secondary locking mechanism of the present invention;

FIG. 9 is a schematic structural view of the plug housing of FIG. 8;

FIG. 10 is a top view of the secondary locking mechanism of FIG. 8;

fig. 11 is a cross-sectional view of the secondary locking mechanism shown in fig. 8.

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

1. a socket housing; 11. a first stopper; 12. a second stopper; 13. auxiliary convex blocks; 2. a plug housing; 21. a main lock hanging table; 22. a guide hole; 23. a first hook; 24. a second hook; 25. a first unlock button; 26. a second unlock button; 27. a limiting notch; 28. a stopping opening; 29. a limiting block; 3. a secondary locking block; 31. a cantilever; 32. a hook projection; 33. a groove; 34. the barb bulges.

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 invention, 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 invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

In a first embodiment, please refer to fig. 1 to 7, the present invention provides a secondary locking mechanism, which includes a socket housing 1, a plug housing 2 and a secondary locking block 3; the socket shell 1 is detachably connected with the plug shell 2, and the plug shell 2 is detachably connected with the secondary locking block 3; a first stop block 11, a second stop block 12 and an auxiliary convex block 13 are arranged on the socket shell 1; a main locking platform 21 and a guide hole 22 are arranged on the plug shell 2, and a first hook 23 and a second hook 24 are arranged on the main locking platform 21; the secondary locking block 3 is provided with a cantilever 31 which can be inserted into the guide hole 22, and the cantilever 31 is provided with a hook lug 32; when the socket housing 1 and the plug housing 2 are locked, namely in a main lock locking state, the first hook 23 is locked on the first stop 11, the hook projection 32 passes through the guide hole 22 and is locked on the auxiliary projection 13, and at the moment, the second hook 24 is not contacted with the second stop 12; when the socket housing 1 and the plug housing 2 are separated by a preset distance, that is, when the locking mechanism is in a delayed locking state, the first hook 23 and the first stopper 11 are unlocked, the hook projection 32 and the auxiliary projection 13 are also unlocked, and the second hook 24 is locked on the second stopper 12.

The technical scheme of the invention realizes the functions of locking the main lock, delaying unlocking and locking for the second time through the combination of a simple structure. Meanwhile, the position of delayed unlocking can be adjusted according to the distance between the effective contact lengths of the male insertion core and the female insertion core in the connector, so that cores with different contact lengths are matched; in this embodiment, different effective contact lengths of the core are matched by adjusting the distance from the time when the first hook 23 interferes with the second stopper 12 after the main lock formed by the first hook 23 and the first stopper 11 is unlocked. The arm of force of secondary latch segment 3 inserts in guiding hole 22 on plug housing 2, can avoid the maloperation to let the position of secondary latch segment 3 take place to remove, has avoided the problem of mistake unblock. The technical scheme solves the problems of insufficient reliability and safety of the existing connector, and is simple, effective and low in cost.

On the basis of the present embodiment, the main latch hanging table 21 is provided with a first unlocking button 25 and a second unlocking button 26; when the first unlocking button 25 is pressed, the first hook 23 and the first stop 11 are unlocked; when the second unlocking button 26 is pressed, the second hook 24 is unlocked from the second stopper 12.

It should be noted that, two unlocking buttons are provided to unlock the first hook 23 and the first stopper 11, and the second hook 24 and the second stopper 12, respectively, so as to better implement the delayed unlocking function and avoid the situation that one button unlocks two hooks at the same time.

Further, in order to avoid the erroneous touch caused by the two unlocking buttons being arranged together, the respective unlocking is realized, and the first unlocking button 25 and the second unlocking button 26 are arranged at different positions on the main hanging table 21. Of course, the positions of the first unlocking button 25 and the second unlocking button 26 may also be overlapped, which is not described as a limitation in the present embodiment, but the structure of the present embodiment is preferred.

In the embodiment, in order to conveniently and respectively unlock the two unlocking buttons, so that the movement directions of the first hook 23 and the second hook 24 are opposite when unlocking is performed, and the wrong touch is avoided, a lever supporting point connected with the plug housing 2 is arranged in the middle of the main locking platform 21, the first hook 23, the second hook 24 and the second unlocking button 26 are all arranged at one end of the lever supporting point, and the first unlocking button 25 is arranged at the other end of the lever supporting point; when the first and

second unlock buttons

25 and 26 are pressed, the main locking platform 21 rotates in opposite directions around the lever support points.

The first unlocking block is pressed downwards, the first hook 23 is lifted in a lever mode, and unlocking between the first hook 23 and the first stop block 11 is achieved; and the second hook 24 is displaced downward by pressing the second unlocking piece, thereby unlocking the locking between the second hook 24 and the second stopper 12. Of course, the structure and distribution of the unlocking button and the hook may be in other forms, which are not described as limitations in this embodiment.

Furthermore, a groove 33 which is concave towards the rear end direction is arranged on the secondary locking block 3; when the cantilever 31 passes through the guide hole 22 from the rear end to the front end and the hooking protrusion 32 is locked on the auxiliary protrusion 13, one end of the first unlocking button 25 on the main hanging table 21 is embedded in the groove 33.

It should be noted that, in the connector unlocking process, the secondary locking block 3 unlocking, the first hook 23 unlocking and the second hook 24 unlocking need to be performed in sequence. The form of recess 33 parcel first unblock button 25 for must earlier move back to predetermined position with secondary latch segment 3 during the unblock, can effectively avoid secondary latch segment 3 to miss before the unblock to touch first unblock button 25.

In the embodiment, the guide hole 22 is provided with a limit notch 27 matched with the hook bump 32; when the secondary locking block 3 is in the pre-installation position, the hook convex block 32 is clamped in the limit notch 27. Further, in order to push the hooking protrusion 32 into a predetermined locking position after the plug housing 2 is inserted into the socket housing 1, the auxiliary protrusion 13 may be used. The rear end face of the auxiliary bump 13 is an inclined face capable of guiding the hook bump 32; when the secondary locking block 3 moves from the installation position to the front end, the hook projection 32 is guided by the inclined surface and locked on the auxiliary projection block 13.

It should be noted that, the secondary locking block 3 is fixed at the preset position by the limiting notch 27, and the secondary locking block 3 can be further advanced and locked on the auxiliary protrusion block 13 only by the inclined surface on the auxiliary protrusion block 13.

In this embodiment, in order to retreat the spacing of direction to secondary latch segment 3, be equipped with barb protruding piece 34 on the secondary latch segment 3, be equipped with on the plug housing 2 with barb protruding piece 34 matched with stopping mouth 28, when secondary latch segment 3 rearward displacement to preset position, barb protruding piece 34 and stopping mouth 28 looks butt. Further, in order to limit the advancing direction of the secondary locking block 3, a limiting block 29 is arranged on the plug housing 2, and when the secondary locking block 3 moves forward to a preset position, the secondary locking block 3 abuts against the limiting block 29. Through two spacing structures in front and back, carry out spacing in two directions to secondary latch segment 3, avoid its distance of advance too big.

In the locking process of the secondary locking mechanism, the secondary locking block 3 is loaded to the preassembly position of the secondary locking block 3 in advance through the guide hole 22 of the plug housing 2, as shown in fig. 4. In the loading process, the hook convex block 32 at the front end of the cantilever 31 of the secondary locking block 3 is interfered with the guide hole 22 and then elastically deformed, and the hook convex block is pushed to the preassembly position of the secondary locking block 3 in a sliding manner. When the hook projection 32 at the front end of the cantilever 31 slides into the limit notch 27 at the front end, the interference contact between the hook projection 32 on the cantilever 31 of the secondary locking block 3 and the guide hole 22 is released, and the elastic deformation is recovered. At this time, the secondary locking block 3 is kept in the limit groove and cannot move.

When the connector plug and the socket are inserted in place, as shown in fig. 5, after the main locking hanging table 21 of the plug shell 2 interferes with the first stop block 11 of the socket shell 1, the main lock is locked; at this time, the inclined surface of the auxiliary protrusion 13 of the socket housing 1 interferes with the hooking protrusion 32 of the secondary locking piece, and the hooking protrusion 32 at the front end of the secondary locking piece 3 slides away from the pre-installation position along the interference of the auxiliary inclined surface under a certain pushing force until the hooking protrusion 32 is locked on the auxiliary protrusion 13, as shown in fig. 6. After the above steps are completed, the connector completes the locking of the plug and the socket.

In the unlocking process of the secondary locking mechanism, certain force is firstly applied to enable the secondary locking block to move to a preassembly position. Then, the first unlocking button 25 is pressed, the main latching stage 21 rotates around the lever supporting point, and the first hook 23 rotates upward to be disengaged from the first stopper 11. The connector is now separated in the unlocking direction until the second catch 24 interferes with the second stop 12, which two configurations achieve a delayed unlocking, at which point the primary lock has completed unlocking, as shown in fig. 7. Continuing to complete the unlocking requires pressing the second unlocking button 26 downward until the second hook 24 and the second stopper 12 are unlocked completely, at which time the second hook moves in the plug-and-socket separation direction to complete the unlocking of the entire connector.

In the second embodiment, as shown in fig. 8 to 11, the first stopper 11, the second stopper 12 and the auxiliary protrusion 13 in the socket housing 1 are respectively located at the front end of the socket housing 1; the first hook 23 and the second hook 24 are integrally incorporated in the front end position of the plug housing 2. Compared with the design that the second hook 24 and the second stop block 12 are distributed on the left side and the right side in the first embodiment, the structure of the stop block and the hook is more compact.

In another aspect, the present invention further provides a secondary locking connector, including: the male insertion core, the female insertion core and the secondary locking mechanism are arranged; the male plug core is arranged in the plug shell, and the female plug core is arranged in the socket shell; when the socket shell 1 and the plug shell 2 are locked, the male plug core is connected and conducted with the female plug core; when the socket shell 1 is separated from the plug shell 2, the male plug core and the female plug core are also disconnected.

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 construed as limiting the scope of the invention. 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 invention. Therefore, the protection scope of the present invention should be subject to the claims.

Claims

1. A secondary locking mechanism, comprising: the socket comprises a socket shell, a plug shell and a secondary locking block; the socket shell is detachably connected with the plug shell, and the plug shell is detachably connected with the secondary locking block;

the socket shell is provided with a first stop block, a second stop block and an auxiliary protruding block; the plug shell is provided with a main locking platform and a guide hole, and the main locking platform is provided with a first hook and a second hook; the secondary locking block is provided with a cantilever which can be inserted into the guide hole, and the cantilever is provided with a hook lug; when the socket shell and the plug shell are locked, the first hook is locked on the first stop block, and the hook convex block passes through the guide hole and is locked on the auxiliary convex block; when the socket shell and the plug shell are separated by a preset distance, the second hook is locked on the second stop block.

2. The secondary locking mechanism of claim 1 wherein the primary latch stand is provided with a first unlock button and a second unlock button; when the first unlocking button is pressed, the first hook and the first stop block are unlocked; when the second unlocking button is pressed, the second hook and the second stop block are unlocked.

3. The secondary locking mechanism of claim 2 wherein the first and second unlock buttons are disposed at different locations on the primary latch stand.

4. The secondary locking mechanism according to claim 3, wherein a lever supporting point connected with the plug housing is arranged in the middle of the primary locking platform, the first hook, the second hook and the second unlocking button are all arranged at one end of the lever supporting point, and the first unlocking button is arranged at the other end of the lever supporting point; when the first unlocking button and the second unlocking button are pressed, the main hanging table rotates around the lever supporting point in opposite directions respectively.

5. The secondary locking mechanism of claim 4 wherein the secondary locking block is provided with a groove recessed towards the rear end; when the cantilever passes through the guide hole from the rear end to the front end and the hook lug is locked on the auxiliary convex block, one end of the first unlocking button on the main locking and hanging table is embedded in the groove.

6. The secondary locking mechanism of claim 1 wherein a limiting notch is provided in the guide hole that is adapted to the hooking protrusion; when the secondary locking block is in the pre-installation position, the hook convex block is clamped in the limiting notch.

7. The secondary locking mechanism of claim 6 wherein the rear end face of the auxiliary projection is an inclined face capable of guiding the hooking projection; when the secondary locking block moves from the installation position to the front end, the hook convex block is locked on the auxiliary convex block after being guided by the inclined surface.

8. The secondary locking mechanism of claim 1 wherein the secondary locking piece has a barb projection, the plug housing has a backstop opening cooperating with the barb projection, and the secondary locking piece is moved back to a predetermined position in which the barb projection abuts against the backstop opening.

9. The secondary locking mechanism of claim 1, wherein a stop block is disposed on the plug housing, and when the secondary locking block moves forward to a predetermined position, the secondary locking block abuts against the stop block.

10. A secondary locking connector, comprising: a male plug core, a female plug core and a secondary locking mechanism according to any one of claims 1 to 9; the male plug core is arranged in the plug shell, and the female plug core is arranged in the socket shell; when the socket shell and the plug shell are locked, the male plug core is connected and conducted with the female plug core.