Secondary locking structure of high-voltage interlocking connector

Abstract

The utility model relates to a connector structure. A secondary locking structure of a high-voltage interlocking connector comprises a plug shell and a pull rod which need to be locked with each other, a secondary locking component is installed on the pull rod, a locking component matched with the secondary locking component is arranged on the plug shell, the secondary locking component comprises a first locking component detachably connected with the pull rod, and the second locking component comprises a second locking component detachably connected with the pull rod. And the second lock component is detachably connected with the plug shell. The utility model provides the secondary locking structure of the high-voltage interlocking connector, which is simple in structure, can realize locking when the pull rod is matched with the plug shell, and is simple to operate and high in safety; the technical problems that in the prior art, a locking structure of a high-voltage interlocking connector is complex, and operation is inconvenient are solved.

Description

Technical Field

[0001] This utility model relates to a connector structure, and more particularly to a secondary locking structure for a high-voltage interlock connector. Background Technology

[0002] Traditional high-voltage interlock connectors typically rely on a single locking structure (such as a snap-fit ​​or screw fixation), which carries the risk of locking failure. They are particularly prone to loosening under vibration, impact, or misoperation scenarios, leading to high-voltage arcing or signal interruption.

[0003] Existing secondary locking structures are mostly split designs, which are complex to operate (requiring step-by-step locking) and lack clear feedback on the locking status, easily leading to user misjudgment. Some secondary locking structures are bulky and costly, making it difficult to meet the requirements of compact high-voltage connectors. An existing secondary lock with a sliding latch requires manual pressing of a specific position for unlocking, which is inconvenient. Summary of the Invention

[0004] This utility model provides a secondary locking structure for a high-voltage interlock connector that is simple in structure, locks together when the pull rod and the plug housing are engaged, is easy to operate, and has high safety; it solves the technical problems of complex locking structures and inconvenient operation of existing high-voltage interlock connectors.

[0005] The above-mentioned technical problem of this utility model is solved by the following technical solution: a secondary locking structure for a high-voltage interlocking connector, comprising a plug housing and a pull rod that need to be interlocked, a secondary locking component installed on the pull rod, and a locking component cooperating with the secondary locking component on the plug housing. The secondary locking component includes a first locking component detachably connected to the pull rod, and a second locking component detachably connected to the plug housing. The secondary locking component completes the locking with the plug housing and the pull rod. The secondary locking component is first fixed to the pull rod via the first locking component; when the pull rod is installed on the plug housing, the locking of the secondary locking component to the plug housing is directly completed. It is simple to operate, well-integrated, and reduces the risk of accidental unlocking.

[0006] Preferably, the secondary locking component includes an upper base plate and a lower base plate, forming a space for inserting a pull rod between the upper and lower base plates. The first locking component is a wedge-shaped protrusion located below the upper base plate. The wedge-shaped protrusion has an inclined surface, facilitating a detachable connection between the secondary locking component and the pull rod. The wedge-shaped protrusion engages with a locking hole on the pull rod, securing the two components. When disassembly is required, a slight elastic deformation of the upper base plate allows for separation.

[0007] Preferably, the second locking component consists of two L-shaped elastic hooks located on the lower base plate. The two hooks are arranged opposite each other, forming a space between them to accommodate the plug housing stop post. When the elastic hooks encounter the stop post, they separate, achieving initial fixation between the secondary locking component and the plug housing. When disassembly is required, the second locking component is pushed in the opposite direction, and under the action of the thrust, the two elastic hooks open again, achieving disassembly.

[0008] Preferably, two parallel insertion posts are provided on the outer sides of the two elastic hooks, and insertion holes that mate with the insertion posts are provided on the plug housing. The insertion posts are inserted into the insertion holes to further secure and lock the secondary locking component to the plug housing.

[0009] Preferably, the end of the hook is provided with an inclined guide surface. This facilitates the sliding of the elastic hook of the secondary locking component into both sides of the stop post of the plug housing.

[0010] Preferably, the pull rod has a cavity for the lower base plate of the secondary locking component to be inserted. A wedge-shaped guide groove is provided on the upper surface of the cavity, and a snap-fit ​​hole is provided on one side of the wedge-shaped guide groove. The wedge-shaped protrusion of the first locking component snaps into the snap-fit ​​hole. The guide groove provides a guiding space for the wedge-shaped protrusion when the secondary locking component is inserted into the cavity of the pull rod, allowing it to slide into the snap-fit ​​hole.

[0011] Preferably, two parallel strip grooves are also provided on the upper surface forming the cavity, located on both sides of the guide groove. This facilitates unlocking of the secondary locking component and the pull rod.

[0012] Preferably, the plug housing is provided with a stop post, a stop plate is provided on one side of the stop post, and the stop plate is provided with two insertion holes.

[0013] Therefore, the secondary locking structure of the high-voltage interlock connector of this utility model has the following advantages: the secondary lock is locked to both the pull rod and the plug housing, realizing an integrated, easy-to-operate, and clearly locking feedback high-voltage interlock secondary locking structure. The coordinated action of the main lock and the secondary lock is achieved through mechanical linkage design, ensuring double locking after the connector is plugged in, while reducing the risk of accidental unlocking. Attached Figure Description

[0014] Figure 1 This is a three-dimensional diagram of the secondary locking structure of a high-voltage interlock connector.

[0015] Figure 2 This is a three-dimensional schematic diagram of the secondary locking component locking with the pull rod.

[0016] Figure 3 This is a three-dimensional schematic diagram showing the secondary locking component locking with the plug housing.

[0017] Figure 4 This is a three-dimensional schematic diagram of the locking mechanism's bottom plate and the plug housing.

[0018] Figure 5 This is a 3D view of the secondary lock component.

[0019] Figure 6 This is a three-dimensional view of the secondary lock component from another perspective.

[0020] Figure 7 It is an enlarged 3D view of the locking part between the pull rod and the secondary locking component.

[0021] Figure 8 It is an enlarged 3D view of the locking part between the plug shell and the secondary locking component. Detailed Implementation

[0022] The technical solution of the utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0023] Example:

[0024] like Figure 1 and 2 As shown in Figures 3 and 4, a secondary locking structure for a high-voltage interlock connector includes a pull rod 2, a secondary locking component 1, and a plug housing 3. The secondary locking component 1 is first installed onto the pull rod 2 via a first locking component. Then, when the pull rod 2 is installed onto the plug housing 3, the secondary locking component 1 is operated to achieve engagement with the plug housing 3 via a second locking component.

[0025] like Figure 5 and 6 As shown, the secondary locking component 1 includes an upper base plate 7 and a lower base plate 8 that are parallel to each other and are connected by side plates. A space is formed between the upper base plate 7 and the lower base plate 8 to accommodate the insertion of the upper surface of the pull rod. A wedge-shaped protrusion 17, serving as the first locking component, is formed on the bottom surface of the upper base plate 7. Two L-shaped elastic hooks 5 are formed on the lower base plate 8, arranged opposite to each other. The ends of the hooks 5 are provided with inclined guide surfaces 6, and a space is formed between the two elastic hooks 5 to accommodate the stop post 14 on the plug housing 3. Two parallel insertion posts 4 are provided on the outer sides of the two elastic hooks 5.

[0026] like Figure 7As shown, a cavity 13 is formed in the middle of the pull rod 2 for the insertion of the lower base plate of the secondary locking component. A wedge-shaped guide groove 10 is provided on the upper surface 9 of the cavity, and a locking hole 11 is provided on one side of the wedge-shaped guide groove 10. The wedge-shaped protrusion 17, which is the first locking component, slides forward through the guide groove 10. When the secondary locking component moves further forward, the wedge-shaped protrusion 17 is locked into the locking hole 10. This achieves the locking of the pull rod 2 and the secondary locking component 1. Two strip grooves 12 are also provided on the upper surface 9 of the cavity. The strip grooves 12 are located on both sides of the guide groove 10, so that the part with the guide groove has a certain elasticity, which makes it convenient for the wedge-shaped protrusion 17 to be dislodged from the locking hole 11 when the secondary locking component is withdrawn in the opposite direction, thus completing the unlocking.

[0027] like Figure 8 As shown, a stop post 14 is formed on the plug housing 3, and a stop plate 15 is provided on one side of the stop post 14. The stop plate 15 has two insertion holes 16. The two elastic hooks 5 are opened by the stop post 14, and then the two elastic hooks 5 are locked on the stop post 14. The insertion post 4 is inserted into the insertion hole 16, thereby completing the locking of the secondary locking component 1 and the plug housing 3. When disassembly is required, the secondary locking component 1 is pushed in the opposite direction, the elastic hooks 5 are opened again, the secondary locking component 1 is disengaged, and the insertion post 4 is also disengaged from the insertion hole 16, thereby unlocking.

[0028] The specific embodiments described herein are merely illustrative of the concept of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A secondary locking structure of a high voltage interlock connector, comprising a plug housing and a pull rod which need to be interlocked, characterized in that: The secondary locking part is installed on the pull rod, and the locking part matched with the secondary locking part is arranged on the plug shell. The secondary locking part comprises a first locking part which is detachably connected with the pull rod, and a second locking part which is detachably connected with the plug shell. The secondary locking part comprises an upper bottom plate and a lower bottom plate, and the pull rod insertion space is formed between the upper bottom plate and the lower bottom plate. The first locking part is a wedge-shaped protrusion which is arranged below the upper bottom plate.

2. The secondary locking structure of a high-voltage interlock connector according to claim 1, characterized in that: The second locking part is two L-shaped elastic hooks which are arranged on the lower bottom plate. The two hooks are oppositely arranged, and the plug shell stop column accommodating space is formed between the two elastic hooks.

3. The secondary locking structure of a high-voltage interlock connector according to claim 2, characterized in that: Two insertion columns which are parallel to each other are arranged outside the two elastic hooks, and the insertion holes matched with the insertion columns are arranged on the plug shell.

4. The secondary locking structure of a high-voltage interlock connector according to claim 2, characterized in that: The end of the hook is provided with an inclined guide surface.

5. The secondary locking structure of the high-voltage interlocking connector according to any one of claims 1 to 4, characterized in that: The pull rod is provided with the cavity into which the lower bottom plate of the secondary locking part is inserted. The wedge-shaped guide groove is arranged on the upper surface of the cavity. The wedge-shaped protrusion of the first locking part is inserted into the clamping through hole.

6. The secondary locking structure of the high-voltage interlocking connector according to any one of claims 1 to 4, characterized in that: Two strip-shaped grooves which are parallel to each other are arranged on the upper surface of the cavity, and the strip-shaped grooves are arranged on both sides of the guide groove.

7. The secondary locking structure of the high-voltage interlocking connector according to any one of claims 1 to 4, characterized in that: The stop column is arranged on the plug shell, and the stop piece is arranged on one side of the stop column. The two insertion holes are arranged on the stop piece.

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