Tension lock

Abstract

A tension lock comprises a first base and a second base which are matched with each other. A lock hook having a unciform head and an annular tail is arranged inside the first base, an eccentric cam having an eccentric shaft is arranged inside the annular tail of the lock hook, a spring enabling the eccentric cam and the lock hook to be interlocked with each other is arranged between the eccentric cam and the inner wall of the lock hook, the shaft end of the eccentric shaft is internally hexagonal, the lock hook is movably arranged inside the first base through the eccentric shaft of the eccentric cam, and correspondingly a fixed shaft is arranged inside the second base. The invention is characterized in that: the eccentric cam and the eccentric shaft are both made of steel material, and the eccentric shaft travels into an eccentric cam connecting hole and is welded securely in the connecting hole. The invention is applicable to tension locks with greater locking strength, reliable operation, long service life and the cam which is not easy to break.

Description

technical field [0001] The invention relates to a lock, in particular to the technical field of a tension lock used in a movable cold storage to fasten movable panels together. Background technique [0002] The existing movable cold storage is surrounded by movable panels, and the movable panels are interlocked with the tension lock at the midpoint. Therefore, whether the movable cold storage can maintain the temperature in the storage depends on the tension lock. The size of the locking force, and the current pull lock includes a precisely positioned lock and a fixed shaft, as shown in Figure 1, the head of the lock hook 3 is hook-shaped, and the tail 4 is ring-shaped, and the ring-shaped tail 4 is provided with Zinc alloy eccentric wheel 6, between eccentric wheel 6 and lock hook 3 inwalls is provided with spring piece 7 that can make eccentric wheel and lock hook linkage, eccentric shaft 5 is inner hexagon, and eccentric wheel 6 is made into one piece. During installatio...

AI Technical Summary

Problems solved by technology

However, the following defects were found during the use of the above structure: Since the eccentric wheel is processed by zinc alloy die-casting, it is easy to cause the structure during processing to be loose and not dense, resulting in rupture during the stress process, so the service life is short, and the eccentric wheel and The gap between the lock hooks is large, and the design of the spring leaf is unreasonable, which will easily cause the shift or looseness between the lock hook and the eccentric wheel, resulting in failure. In addition, after a period of use, the spring leaf will also affect the eccentricity due to elastic deformation. The linkage between the wheel and the hook, thus affecting its normal operation

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