A pressable secondary locking structure and an electrical connector

Abstract

The application discloses a pressable secondary locking structure and an electric connector. The pressable secondary locking structure comprises a plug shell, a socket shell and a secondary lock catch. The socket shell is provided with a first hanging platform and a second hanging platform, and the first hanging platform and the second hanging platform are provided with wedge-shaped inclined surfaces along the plug-in direction. The plug shell is provided with a secondary lock catch accommodating cavity, a first hanging nose, a second hanging nose, a first unlocking part and a second unlocking part. The head of the secondary lock catch is provided with a cantilever hanging nose. A limiting mechanism and a locking mechanism are arranged between the secondary lock catch and the secondary lock catch accommodating cavity. The first hanging nose and the second hanging nose on the plug shell and the first hanging platform and the second hanging platform on the socket shell are connected through a lever structure to realize the segmented plug-in and separation of the plug and the socket, thereby effectively realizing the high-pressure interlocking function. The secondary lock catch is coupled with the main lock, the secondary lock catch is pulled out, the secondary locking is released, and then the secondary lock catch is directly pressed to realize the unlocking of the main lock, thereby simplifying the operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-voltage interlocking electrical connectors, in particular to a pressable secondary locking structure and an electrical connector. BACKGROUND

[0002] The existing electrical connector, especially the new energy high-voltage interlocking small current series, separates the secondary lock from the main lock, and needs two operations (pulling out the secondary lock and pressing the main lock for unlocking) to unlock. The operation is complicated and prone to misoperation, which may cause the lock to fall off. At the same time, due to the structural limitation, the main lock unlocking position is often smaller than the standard finger pad, which cannot guarantee the implementation of human-machine engineering. SUMMARY

[0003] The present application provides a pressable secondary locking structure and an electrical connector to solve the above technical problems in the prior art. The present application couples the secondary lock with the main lock, pulls out the secondary lock, and directly presses the secondary lock after releasing the secondary locking, which can realize the unlocking of the main lock, simplify the operation, and meet the ergonomics, facilitating manual unlocking operation.

[0004] The technical scheme adopted by the present application is as follows: in the first aspect, a pressable secondary locking structure is provided, comprising: a plug shell, a socket shell, and a secondary lock.

[0005] The socket shell is provided with a one-segment hanging table and a two-segment hanging table, and the one-segment hanging table and the two-segment hanging table are provided with wedge-shaped inclined surfaces along the insertion direction.

[0006] The plug shell is provided with a secondary lock receiving cavity, a primary hanging nose, a secondary hanging nose, a first unlocking part, and a second unlocking part.

[0007] The head part of the secondary lock is provided with a cantilever hanging nose.

[0008] A limiting mechanism and a locking mechanism are arranged between the secondary lock and the secondary lock receiving cavity.

[0009] When the plug shell is inserted into the socket shell, the secondary locking catch is inserted into the secondary locking catch receiving cavity in the axial direction, triggering the limiting mechanism, and the first hanging nose is blocked by the cantilevered hanging nose at this time; at this time, the plug shell is inserted into the socket shell, the secondary hanging nose is buckled with the second hanging platform to achieve the first stage of locking; continue to push the plug shell, the first hanging nose is buckled with the first hanging platform to achieve the second stage of locking; continue to push the secondary locking catch, the cantilevered hanging nose is buckled with the first hanging nose, and the locking mechanism is triggered to achieve complete locking of the plug shell and the socket shell; when unlocking, the secondary locking catch is pulled backward, the locking mechanism is released, and the secondary locking catch cannot continue to exit under the action of the limiting mechanism; when the first unlocking part is pressed, the first hanging nose is raised, the plug shell is pulled backward, the first hanging nose is separated from the first hanging platform, and the first unlocking is achieved; when the second unlocking part is pressed, the secondary hanging nose is raised, the plug shell is continuously pulled backward, the secondary hanging nose is separated from the second hanging platform, and the second unlocking is achieved.

[0010] Further, the secondary locking catch receiving cavity is arranged at the top of the plug shell, and the top wall of the plug shell is provided with a hollow groove; the second unlocking part includes a connecting column and a pressing plate, the pressing plate is integrally formed and fixed in the hollow groove through two connecting columns on the two side walls, so that the pressing plate forms a "seesaw" structure, one end of the upper surface of the pressing plate is a second unlocking pressing part, and the other end of the lower surface of the pressing plate is a secondary hanging nose.

[0011] Further, an unlocking boss is arranged above the tail of the secondary locking catch; and a secondary locking catch in-place indicating part is arranged at the end of the top wall of the plug shell.

[0012] Further, a supporting frame is arranged in the secondary locking catch receiving cavity, the supporting frame is connected in the secondary locking catch receiving cavity through a supporting column in the middle of the bottom of the supporting frame, so that the supporting frame forms a "seesaw" structure, one end of the supporting frame is a first unlocking part, and the other end of the supporting frame is a first hanging nose.

[0013] Further, a secondary locking catch anti-withdrawal groove and a secondary locking catch guide groove are arranged on the supporting frame; two wings of the inner cavity of the tail of the secondary locking catch are provided with secondary locking catch limiting elastic tongues; when the plug shell is inserted into the socket shell, the secondary locking catch limiting elastic tongues slide along the secondary locking catch guide groove and are buckled with the secondary locking catch anti-withdrawal groove, forming the limiting mechanism.

[0014] Further, the secondary locking catch limiting elastic tongue is in the shape of "J".

[0015] Further, secondary locking catch blocking platforms are arranged on both sides of the supporting frame in the insertion direction, and secondary locking catch in-place fixing grooves are arranged below the secondary locking catch blocking platforms; two wings are arranged on the middle top of the secondary locking catch, and secondary locking catch locking elastic tongues are arranged on the two wings of the outer side of the tail of the secondary locking catch; when the plug shell is inserted into the socket shell, the wings slide on the secondary locking catch blocking platforms, the secondary locking catch locking elastic tongues are buckled with the secondary locking catch in-place fixing grooves, and the locking mechanism is formed.

[0016] Further, the secondary locking catch is in a "d" shape.

[0017] Further, the secondary locking catch is in a one-piece structure.

[0018] In a second aspect, an electrical connector is provided, which includes the pressable secondary locking structure of the first aspect.

[0019] The present application has the following advantages:

[0020] (1) The primary hanging nose and the secondary hanging nose on the plug shell and the one-segment hanging table and the two-segment hanging table on the socket shell are connected through a lever structure to achieve segmented plug-in and separation of the plug and the socket, thereby effectively realizing high-pressure interlocking function.

[0021] (2) The secondary locking catch is assembled in the secondary locking catch receiving cavity of the plug shell, and the tail thereof cooperates with the first unlocking part to realize separation of the primary hanging nose and the one-segment hanging table, which not only simplifies the pressing part, but also meets the ergonomics and facilitates manual unlocking operation.

[0022] (3) The front end of the cantilever hanging nose of the head of the secondary locking catch cooperates with the secondary locking catch limiting groove at the head of the secondary locking catch receiving cavity, and the secondary locking catch limiting spring tongue cooperates with the secondary locking catch anti-back-off groove, thereby realizing fixation of the secondary locking catch in the plug shell, the former effectively preventing the secondary locking catch from being mistakenly locked due to excessive force when the head is not properly inserted, and the latter effectively preventing the secondary locking catch from falling off from the plug shell due to excessive force.

[0023] (4) The secondary locking catch is coupled with the main lock in the present application, and after the secondary locking catch is pulled out and the secondary locking is released, the main lock can be unlocked by directly pressing the secondary locking catch, which simplifies the operation and meets the ergonomics and facilitates manual unlocking operation. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 FIG. 1 is a structural schematic view of the plug shell disclosed in the present application;

[0025] Figure 2 FIG. 2 is a structural schematic view of the plug shell disclosed in the present application after removing the top wall;

[0026] Figure 3 FIG. 3 is a sectional view of the plug shell disclosed in the present application;

[0027] Figure 4 FIG. 4 is a structural schematic view of the socket shell disclosed in the present application;

[0028] Figure 5 FIG. 5 is a structural schematic view of the secondary locking catch disclosed in the present application;

[0029] Figure 6 FIG. 6 is another structural schematic view of the secondary locking catch disclosed in the present application;

[0030] Figure 7 Figure 1 is a cross-sectional view of the plug shell and the socket shell in an unconnected state according to the present application;

[0031] Figure 8 Figure 2 is a cross-sectional view of the plug shell and the socket shell in a first locking state according to the present application;

[0032] Figure 9 Figure 3 is a cross-sectional view of the plug shell and the socket shell in a second locking state according to the present application;

[0033] Figure 10 Figure 4 is a cross-sectional view of the plug shell and the socket shell in a fully locked state according to the present application.

[0034] Reference signs: 1-plug shell, 11-first hanging nose, 12-second hanging nose, 13-first unlocking part, 14-second unlocking part, 141-connection column, 142-pressing plate, 143-second unlocking pressing part, 144-hollow groove, 15-second lock buckle in-place indicating part, 111-second lock buckle accommodating cavity, 1111-second lock buckle limiting groove, 1112-second lock buckle blocking table, 11121-second lock buckle in-place fixing groove, 131-second lock buckle anti-retreating groove, 132-second lock buckle guiding groove, 133-supporting column, 134-supporting frame, 2-socket shell, 21-first hanging table, 22-second hanging table, 3-second lock buckle, 31-side wing, 32-cantilever hanging nose, 33-unlocking boss, 34-second lock buckle limiting elastic tongue, 35-second lock buckle locking elastic tongue. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings, but the embodiments of the present application are not limited thereto. It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for the purpose of illustration only.

[0036] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used for better description of the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0037] And, the above-mentioned partial terms, in addition to can be used to express the orientation or positional relationship, can also be used to express other meanings, for example, the term "upper" can also be used to express a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0038] In addition, the terms "mounting", "setting", "provided with", "connecting", "connected" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally configured; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0039] Embodiment 1:

[0040] Referring to Figures 1-6 The embodiment discloses a pressable secondary locking structure, comprising: a plug shell 1, a socket shell 2, and a secondary locking buckle 3.

[0041] Referring to Figure 4 The socket shell 2 is provided with a first hanging table 21 and a second hanging table 22, and the first hanging table 21 and the second hanging table 22 are provided with wedge-shaped inclined surfaces along the insertion direction, so that the secondary hanging nose 12 can move upwards along the wedge-shaped inclined surface of the second hanging table 22 and bypass the second hanging table 22 to be buckled; similarly, the primary hanging nose 11 can also move upwards along the wedge-shaped inclined surface of the first hanging table 21 and bypass the first hanging table 21 to be buckled.

[0042] Referring to Figures 1-3 The plug shell 1 is provided with a secondary locking buckle accommodating cavity 111, a primary hanging nose 11, a secondary hanging nose 12, a first unlocking part 13, a second unlocking part 14, and a secondary locking buckle in-place indicating part 15.

[0043] Specifically, the head of the secondary locking buckle accommodating cavity 111 is provided with a secondary locking buckle limiting groove 1111. Preferably, in the embodiment, the secondary locking buckle in-place indicating part 15 is located at the end of the top wall of the plug shell 1, and the in-place indication is performed by abutting the unlocking boss 33 on the side surface of the top wall. In other embodiments, the secondary locking buckle in-place indicating part 15 can also be a limiting column, a limiting boss, a limiting clamping groove, etc.

[0044] Specifically, referring to Figure 1The secondary locking cavity 111 is located on the top of the plug housing 1, and the top wall of the plug housing 1 has a hollow groove 144. The second unlocking part 14 includes a connecting post 141 and a pressing plate 142. The two side walls of the pressing plate 142 are integrally formed and fixed in the hollow groove 144 by two connecting posts 141, so that the pressing plate 142 forms a "seesaw" structure. One end of the upper surface of the pressing plate 142 is the second unlocking pressing part 143, and the other end of the lower surface of the pressing plate 142 is the secondary hook 12. Pressing the second unlocking pressing part 143 can cause the secondary hook 12 to lift up.

[0045] For details, see Figures 1-3 A support frame 134 is provided inside the secondary locking cavity 111. The bottom center of the support frame 134 is connected to the secondary locking cavity 111 via a support column 133, forming a "seesaw" structure. One end (the tail end in the insertion direction) of the support frame 134 is the first unlocking part 13, and the other end (the front end in the insertion direction) is the primary hook 11. By pressing the first unlocking part 13, the primary hook 11 can be raised.

[0046] For details, see Figures 1-2 The support frame 134 is provided with a secondary locking anti-retrograde groove 131 and a secondary locking guide groove 132. Secondary locking blocking platforms 1112 are provided on both sides of the support frame 134 along the insertion direction, and a secondary locking positioning fixing groove 11121 is provided below the secondary locking blocking platform 1112. It should be noted that the secondary locking anti-retrograde groove 131 has a certain length, allowing the secondary locking limiting tongue 34 to slide a certain distance within it.

[0047] See Figures 5-6 The secondary latch 3 has a cantilevered nose 32 at its head, an unlocking protrusion 33 at the top of its tail, secondary latch limiting springs 34 on both sides of the inner cavity of its tail, secondary latch locking springs 35 on both sides of the outer side of its tail, and two side wings 31 at the top center of the secondary latch. Preferably, the secondary latch 3 is a one-piece molded structure.

[0048] When engaged, the side wing 31 slides on the secondary locking blocking platform 1112. The secondary locking blocking platform 1112 and the two side wings 31 of the secondary locking work together to prevent the secondary locking from being accidentally pressed to unlock.

[0049] Preferably, the secondary locking limit spring 34 is J-shaped; when engaged, the secondary locking limit spring 34 slides along the secondary locking guide groove 132 and can smoothly enter the secondary locking anti-removal groove 131 to engage with it; when unlocked, due to the J-shaped design of the secondary locking limit spring 34, it cannot be pulled out from the secondary locking anti-removal groove 131, thus the secondary locking limit spring 34 and the secondary locking anti-removal groove 131 form a limiting mechanism. Preferably, the secondary locking spring 35 is "d" shaped; when engaged, the side wing 31 slides on the secondary locking blocking platform 1112, and the secondary locking spring 35 can smoothly enter the secondary locking positioning groove 11121 and engage with it; when unlocked, due to the "d" shaped design of the secondary locking spring 35, the secondary locking spring 35 can smoothly be pulled out from the secondary locking positioning groove 11121, thereby forming a locking mechanism with the secondary locking spring 35 and the secondary locking positioning groove 11121.

[0050] The principle of this invention is as follows: See Figures 7-10 The secondary latch 3 is inserted into the secondary latch receiving cavity 111 along the axial direction (i.e., the insertion direction of the plug housing 1 and the socket housing 2). At this time, the secondary latch limiting spring 34 enters the secondary latch anti-retraction groove 131 to trigger the limiting mechanism. The cantilever hanging nose 32 is located in the secondary latch limiting groove 1111, and the primary hanging nose 11 blocks and limits the cantilever hanging nose 32.

[0051] During locking, insert the plug housing 1 into the socket housing 2. A "click" sound indicates that the plug housing 1 and socket housing 2 have achieved the first stage of locking. At this time, the secondary lug engages with the second-stage mounting platform 22, and both the primary lug 11 and the cantilever lug 32 are located on the wedge-shaped inclined surface of the first-stage mounting platform 21. Continue pushing the plug housing 1. Another "click" sound indicates that the plug housing 1 and socket housing 2 have achieved the second stage of locking. At this time, the primary lug 11 engages with the first-stage mounting platform 21, and the cantilever lug 32 is located directly above the first-stage mounting platform 21. Continue pushing the secondary locking latch 3 until its unlocking protrusion 33 interferes with the secondary locking latch position indicator 15. At this time, the secondary locking latch tongue 35 engages with the secondary locking latch position fixing groove 11121, achieving secondary locking of the locking structure. Thus, the locking of the plug housing 1 and socket housing 2 is complete.

[0052] During unlocking, pull the secondary latch 3 backward. The secondary latch locking spring 35 disengages from the secondary latch positioning groove 11121, releasing the locking mechanism. Continue pulling until the secondary latch limiting spring 34 interferes with the secondary latch anti-retraction groove 131 (at this point, the secondary latch 3 cannot disengage further due to the limiting mechanism). Press the unlocking boss 33. The first unlocking part 13 is pressed down, causing the primary hanging nose 11 and the cantilever hanging nose 32 to lift up. At this point, drag the plug housing 1 backward. The primary hanging nose 11 disengages from the first hanging platform 21, achieving the first unlocking. Continue dragging backward until the secondary hanging nose 12 interferes with the second hanging platform 22. When the second unlocking pressing part 143 is pressed, the secondary hanging nose 12 lifts up. Continue dragging the plug housing 1 backward. The secondary hanging nose 12 disengages from the second hanging platform 22, achieving the second unlocking.

[0053] In this embodiment, the primary hook 11 and secondary hook 12 on the plug housing 1 and the first-section mounting plate 21 and second-section mounting plate 22 on the socket housing 2 achieve segmented insertion and separation of the plug and socket through a lever structure, thereby effectively realizing the high-voltage interlocking function.

[0054] The secondary locking buckle 3 is assembled in the secondary locking buckle receiving cavity 111 of the plug housing 1. Its tail works together with the first unlocking part 13 to separate the primary hanging nose 11 from the first hanging platform 21. This not only simplifies the pressing part, but also meets the ergonomic requirements and facilitates manual unlocking operation.

[0055] The front end of the cantilever nose 32 of the secondary locking buckle 3 engages with the secondary locking buckle limiting groove 1111 of the secondary locking buckle receiving cavity 111, and the secondary locking buckle limiting spring tongue 34 engages with the secondary locking buckle anti-removal groove 131 to fix the secondary locking buckle 3 in the plug housing 1. The former effectively prevents the secondary locking buckle 3 from being accidentally locked due to excessive force when the head is not inserted, and the latter effectively prevents the secondary locking buckle 3 from falling out of the plug housing 1 due to excessive force.

[0056] In summary, compared with the prior art, the present invention has the advantages of reliable structure and easy operation, and is particularly suitable for the use requirements of electrical connectors in new energy vehicles, and has high application value.

[0057] Example 2:

[0058] This embodiment discloses an electrical connector, which includes a pressable secondary locking structure as described in Embodiment 1.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pressable secondary locking structure, characterized in that, include: Plug housing, socket housing, secondary locking mechanism; The socket housing is provided with a first-section mounting platform and a second-section mounting platform, and the first-section mounting platform and the second-section mounting platform are provided with wedge-shaped inclined surfaces along the insertion direction; The plug housing is provided with a secondary locking cavity, a primary nose clip, a secondary nose clip, a first unlocking part, and a second unlocking part; The secondary locking head is equipped with a cantilevered nose. A limit mechanism and a locking mechanism are provided between the secondary latch and the secondary latch receiving cavity; During insertion, the secondary latch is inserted axially into the secondary latch receiving cavity, triggering the limiting mechanism. At this time, the primary latch blocks and limits the cantilever latch. The plug housing is then inserted into the socket housing, and the secondary latch engages with the second-stage mounting platform to achieve the first stage of locking. Continuing to push the plug housing, the primary latch engages with the first-stage mounting platform to achieve the second stage of locking. Continuing to push the secondary latch, the cantilever latch engages with the primary latch, triggering the locking mechanism to achieve complete locking of the plug housing and socket housing. During unlocking, pulling the secondary latch backward releases the locking mechanism, and the secondary latch cannot further retract under the action of the limiting mechanism. Pressing the first unlocking part causes the primary latch to lift, dragging the plug housing backward, disengaging the primary latch from the first-stage mounting platform, achieving the first unlocking. Pressing the second unlocking part causes the secondary latch to lift, continuing to drag the plug housing backward, disengaging the secondary latch from the second-stage mounting platform, achieving the second unlocking.

2. The pressable secondary locking structure according to claim 1, characterized in that, The secondary locking cavity is located on the top of the plug housing, and the top wall of the plug housing has a hollowed-out groove; the second unlocking part includes a connecting post and a pressing plate, and the two side walls of the pressing plate are integrally formed and fixed in the hollowed-out groove by two connecting posts, so that the pressing plate forms a "seesaw" structure. One end of the upper surface of the pressing plate is the second unlocking pressing part, and the other end of the lower surface of the pressing plate is the secondary hook.

3. The pressable secondary locking structure according to claim 1, characterized in that, An unlocking protrusion is provided above the tail of the secondary lock; a secondary lock positioning indicator is provided at the end of the top wall of the plug housing.

4. The pressable secondary locking structure according to claim 1, characterized in that, The secondary locking cavity is equipped with a support frame. The bottom center of the support frame is connected to the secondary locking cavity by a support column, so that the support frame forms a "seesaw" structure. One end of the support frame is the first unlocking part, and the other end is the primary hook.

5. The pressable secondary locking structure according to claim 4, characterized in that, The support frame is provided with a secondary locking anti-retraction groove and a secondary locking guide groove; the two wings of the inner cavity of the secondary locking tail are provided with secondary locking limiting tongues; when inserted, the secondary locking limiting tongues slide along the secondary locking guide groove and engage with the secondary locking anti-retraction groove to form the limiting mechanism.

6. The pressable secondary locking structure according to claim 5, characterized in that, The secondary locking limit spring is in the shape of a "J".

7. The pressable secondary locking structure according to claim 4, characterized in that, The support frame is provided with secondary locking blocking platforms on both sides along the insertion direction, and a secondary locking positioning groove is provided below the secondary locking blocking platforms; the outer two wings of the tail of the secondary locking are provided with secondary locking springs, and the top of the middle of the secondary locking is provided with two wings; when inserted, the wings slide on the secondary locking blocking platforms, and the secondary locking springs engage with the secondary locking positioning grooves to form the locking mechanism.

8. The pressable secondary locking structure according to claim 7, characterized in that, The secondary locking spring is shaped like a "d".

9. The pressable secondary locking structure according to claim 1, characterized in that, The secondary locking mechanism is a one-piece molded structure.

10. An electrical connector, characterized in that, Includes the pressable secondary locking structure as described in any one of claims 1-9.

Images