Plug-pull-type fast lock for gauge board box cover

[0016] like figure 2 The shown plug-in quick lock for the instrument box cover includes a lock table 6, a slide hole 7, a support shaft 8, a first jaw 9, a second jaw 10, a guide roller 11, a torsion spring 12 and The dead bolt 13 and the lock platform 6 are arranged inside the instrument case 15 , and the dead bolt 13 is arranged on the inner side of the box cover 14 .

[0017] Both the first jaw 9 and the second jaw 10 include a connecting portion 93, a transition portion 92 and a clamping portion 91, the connecting portion 93, the transition portion 92 and the clamping portion 91 are in a “U” shape, and the first jaw 9 and The "U"-shaped openings of the second jaws 10 are opposite to each other. The lock table 6 is provided with a vertical slide hole 7, and the support shaft 8 is arranged in the slide hole 7 and has a vertical degree of freedom. The slide hole 7 plays a guiding role for the support shaft 8. Both the connecting parts 93 of the first jaw 9 and the second jaw

[0022] like image 3 As shown, when the lock tongue is not inserted into the clamping part, the clamping part of the first clamping jaw and the second clamping jaw are in contact. The only difference between this embodiment and the first embodiment is that the first clamping jaw and the second clamping jaw The outer ends of the clamping parts of the two jaws are all cylindrical curved surfaces 16 . The structural design of the cylindrical curved surface also guides the bolt.