Improvement of bolt structure

Abstract

This invention discloses an improvement to a door bolt structure, which includes: multiple bearing seats, multiple bearing units, and a rotating shaft. Multiple bearing seats and multiple bearing units are connected through the rotating shaft, and these bearing seats are respectively fixed to the wall and the door. The overlapping axial forces formed by these bearing units are used to reduce the radial force generated when the door vibrates, making the improved door bolt structure less prone to breakage and extending its service life.

Claims

1. An improvement to a door bolt structure, comprising: A plurality of bearing housings, each having a locking portion and a through-sleeve portion, with an upper receiving portion and a lower receiving portion respectively provided at the top and bottom ends of the through-sleeve portion, the bearing housings including a first bearing housing, a second bearing housing, and a third bearing housing; a plurality of bearing units, the bearing units including: a first bearing unit disposed between the lower receiving portion of the first bearing housing and the upper receiving portion of the second bearing housing; a second bearing unit disposed between the lower receiving portion of the second bearing housing and the upper receiving portion of the third bearing housing; a plurality of third bearing units disposed within the upper receiving portion of the first bearing housing and the lower receiving portion of the third bearing housing; and a rotating shaft inserted into and connected to the through-sleeve portions of the first bearing housing, the second bearing housing, and the third bearing housing, and rotatably connected to the first bearing unit, the second bearing unit, and the third bearing units; The first bearing housing and the third bearing housing are locked together to the first object by the locking part, and the second bearing housing is locked together to the second object by the locking part.

2. An improvement to the bolt structure as described in claim 1, wherein both the first bearing unit and the second bearing unit are unidirectional thrust ball bearings.

3. An improvement to the bolt structure as described in claim 2, wherein the one-way thrust ball bearing system includes an upper track ring, a lower track ring, a cage, and a plurality of balls, the upper track ring and the lower track ring each having a circular arc track groove, the balls being disposed on the cage, and the balls and the cage being disposed on the circular arc track groove and positioned between the upper track ring and the lower track ring.

4. An improvement to the bolt structure as described in claim 3, wherein the outer diameter of the upper track ring of the first bearing unit and the second bearing unit is smaller than the outer diameter of the lower track ring.

5. An improvement to the bolt structure as described in claim 1, wherein the third bearing units are cylindrical roller bearings.

6. An improvement to the bolt structure as described in any one of claims 1 to 5, wherein the first material system is a wall and the second material system is a door.

7. The improved bolt structure as described in claim 6 further includes a plate body disposed on the wall surface of the wall, for the first bearing seat and the third bearing seat to be locked and engaged with the plate body.

8. The improved bolt structure as described in claim 7 further includes an H-beam disposed on the side of the door body for the second bearing seat to be locked and engaged with the H-beam.

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