Secondary interlock for a connector

Abstract

The utility model relates to a secondary interlocking device of connector, through the swing of lock support around axle pin, the linear sliding of lock rod and the reset action of tension spring cooperation, realized mechanical and electrical secondary interlocking, double protection effectively prevents the live working of connector under the condition of virtual connection or not completely locked, avoided the safety accidents such as arc, ablation, and simultaneously, the tension spring set between the installation support and lock support always provides a reset force for lock support to the unlocking direction, ensured the security of automatic reset.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a secondary interlocking device for connectors. Background Technology

[0002] Currently, most common connector interlocking solutions employ a single mechanical latch or a simple electrical interlocking mechanism. These traditional solutions have several drawbacks. First, their operation is often labor-intensive, especially in applications requiring frequent plugging and unplugging or where space is limited, causing inconvenience to users. Second, the reliability of the interlocking needs improvement; some mechanisms may experience problems such as insecure locking or accidental triggering after long-term use or exposure to vibration and impact, posing safety hazards. Third, many interlocking structures are complex with numerous parts, leading to cumbersome assembly processes and low production efficiency. Furthermore, the lack of an effective automatic reset function is also a major drawback; after the connector is separated, the locking mechanism cannot automatically return to its initial safe position, potentially affecting the next normal connection or leaving safety risks. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a secondary interlocking device for a connector that is easy to operate, reliable in interlocking, convenient to assemble, and has an automatic reset function.

[0004] To achieve the above objectives, this utility model employs a secondary interlocking device for a connector, comprising a mounting bracket and a locking bracket. The locking bracket includes an upper side wall and a lower side wall, as well as a support plate connected to the upper and lower side walls respectively. Both the upper and lower side walls have coaxially arranged through holes, and a pin is provided within each through hole. The two ends of the pin are fixed to coaxial shaft holes on both sides of the mounting bracket and pass through the through holes in the upper and lower side walls of the locking bracket. The upper side wall of the locking bracket has an outwardly extending operating portion. A locking rod is slidably mounted on the mounting bracket. A slot is provided on the mounting bracket corresponding to the sliding path of the locking rod. A rod groove is provided on the support plate of the locking bracket corresponding to the slot. The end of the locking rod passes through the slot and is inserted into the rod groove. A tension spring is provided between the mounting bracket and the locking bracket.

[0005] The beneficial effects of the above structure are as follows: through the coordinated operation of the swing of the locking bracket around the pivot pin, the linear sliding of the locking rod, and the reset action of the tension spring, a secondary interlocking of mechanical and electrical components is achieved. This dual protection effectively prevents the connector from operating under energized conditions when it is loosely connected or not fully locked, avoiding safety accidents such as arcing and burning. At the same time, the tension spring installed between the mounting bracket and the locking bracket always provides a reset force to the locking bracket in the direction of unlocking, ensuring the safety of automatic reset.

[0006] This utility model is further configured with a roller at the end of the operating part. By changing the sliding friction between the operating part and the external mechanism into rolling friction, the swing of the lock bracket becomes more effortless and smoother, and wear is significantly reduced.

[0007] This utility model is further configured such that the operating part has a screw hole corresponding to the roller, and a screw is screwed into the screw hole, with the roller rotatably fitted onto the screw. The screw achieves both fixing and support of the roller, making assembly convenient and greatly improving production assembly efficiency.

[0008] This utility model is further configured such that the tension spring has hooks at both ends, the mounting bracket has hook posts, and the hook posts have slots on opposite radial sides for the tension spring hooks to engage. The lock bracket has a round hole. The hook at one end of the tension spring engages in the slot of the hook post, and the hook at the other end engages in the round hole of the lock bracket. By engaging the hooks at both ends of the tension spring with the slots of the hook posts and the round hole of the lock bracket, a quick-connect fixing method is formed. Assembly requires no tools, improving assembly efficiency. Simultaneously, the slots on the hook posts effectively prevent the tension spring from dislodging during vibration, ensuring the reliability of the connection. Attached Figure Description

[0009] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0010] Figure 2 This is an exploded view of the assembly of the mounting bracket and the locking bracket according to an embodiment of this utility model.

[0011] Figure 3 yes Figure 2 A magnified view of a portion of the image. Detailed Implementation

[0012] like Figures 1-3 As shown, an embodiment of this utility model provides a secondary interlocking device for a connector, including a mounting bracket 1 and a locking bracket 2. The locking bracket 2 includes an upper side wall 21, a lower side wall 22, and a support plate 23 connecting the upper and lower side walls. Both the upper side wall 21 and the lower side wall 22 are provided with coaxial through holes 24. The opposite side wall of the mounting bracket 1 is provided with coaxial shaft holes 11. The two ends of the shaft pin 25 are respectively fixed in the coaxial shaft holes 11 on both sides of the mounting bracket 1 and pass through the through holes 24 on the upper and lower side walls of the locking bracket 2, so that the locking bracket 2 can rotate relative to the mounting bracket 1 around the axis of the shaft pin 25 and can be slightly translated along the direction of the through hole 24.

[0013] The upper side wall 21 of the lock bracket 2 has an outwardly extending operating part 3. The mounting bracket 1 is also slidably provided with a lock rod 12, and a slot 13 is opened on its sliding path. The support plate 23 of the lock bracket 2 has a rod groove 231 at the position corresponding to the slot 13. The end of the lock rod 12 can pass through the slot 13 and be inserted into the rod groove 231.

[0014] A tension spring 4 is provided between the mounting bracket 1 and the lock bracket 2. The two ends of the tension spring 4 are provided with hooks 41. The mounting bracket 1 is provided with a hanging post 5, which has slots 51 on its radially opposite sides. The lock bracket 2 is provided with a round hole 6. The hook 41 at one end of the tension spring 4 is engaged in the slot 51 of the hanging post 5, and the hook 51 at the other end is engaged in the round hole 6.

[0015] The end of the operating part 3 is provided with a roller 7 and a screw hole 71 is opened at the end of the operating part 3. The screw 72 is screwed into the screw hole 71 and the roller 7 is rotatably sleeved on the screw 72.

[0016] Of course, in addition to the above embodiments, this utility model may have other various embodiments. Without departing from the essential technical solution of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, and these changes or modifications are equivalent to the technical solution in this patent. Therefore, these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model, and the utility model creation is in line with the applicant's actual R&D capabilities and resource conditions.

Claims

1. A secondary interlocking device for a connector, characterized in that: The device includes a mounting bracket and a lock bracket. The lock bracket includes an upper side wall and a lower side wall, as well as a support plate connected to the upper and lower side walls respectively. Both the upper and lower side walls have coaxial through holes, and a pin is installed within each through hole. The two ends of the pin are fixed to coaxial holes on both sides of the mounting bracket and pass through the through holes in the upper and lower side walls of the lock bracket. The upper side wall of the lock bracket has an outwardly extending operating part. A lock rod is slidably mounted on the mounting bracket. The mounting bracket has a slot corresponding to the sliding path of the lock rod. A rod groove is provided on the support plate of the lock bracket at the position corresponding to the slot. The end of the lock rod passes through the slot and is inserted into the rod groove. A tension spring is provided between the mounting bracket and the lock bracket.

2. The secondary interlocking device for the connector according to claim 1, characterized in that: The end of the operating part is provided with a roller.

3. The secondary interlocking device for the connector according to claim 2, characterized in that: The operating part has a screw hole corresponding to the roller, a screw is screwed into the screw hole, and the roller is rotatably sleeved on the screw.

4. The secondary interlocking device for the connector according to claim 1, characterized in that: The tension spring has hooks at both ends, the mounting bracket has a hanging post, the hanging post has slots on opposite radial sides for the tension spring hooks to engage, the lock bracket has a round hole, the hook at one end of the tension spring engages in the slot of the hanging post, and the hook at the other end engages in the round hole of the lock bracket.

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