A passive full-range locking device for single-leaf or double-leaf doors

Abstract

The invention discloses a passive whole-process locking device for a single-leaf or double-leaf door. The passive whole-process locking device comprises a sleeve, a one-way clutch, a rotating core, a tooth disk, an axial cam and a group of rolling bodies, wherein the sleeve is provided with a tooth disk; an outer ring of the one-way clutch is fixedly connected with the sleeve; the rotating core is usually connected with a door transmission part and defined to rotate in the door closing direction inside the one-way clutch; the tooth disk is rotationally limited, limitedly moves in the axial direction and tends to be engaged with the tooth disk part of the sleeve; the axial cam is located between the sleeve and the tooth disk and fixedly connected with a driving shaft; and the rolling bodies are uniformly distributed between the axial cam and the tooth disk. The rotating core and the axial cam are axially connected in a nested mode and mutually rotate within a limited range. Rotation of the axial cam drives the rolling bodies to roll between the low-point working surface and the high-point working surface of the axial cam, and separation and reunion between the tooth disk and the sleeve are controlled. The passive whole-process locking device for the single-leaf or double-leaf door only depends on the driving shaft to work in the rotation direction and does not depend on the rotation difference to work, and the principle defects of existing devices are thoroughly overcome.

Description

technical field [0001] The invention relates to a passive full-range locking device for single or double doors in the traffic field, and belongs to the technical field of door locking devices. Background technique [0002] The full-range locking device is an important type of door system lock device in the transportation field. Its full-range one-way locking feature enables the door to obtain some special functions and performances. According to whether the full-range locking device has independent control power components, it can be divided into "active full-range locking device" and "passive full-range locking device". The "active full locking device" has a complex structure, large volume, high cost, bulkiness and high energy consumption, while the "passive full locking device" has a compact structure, low cost, light weight and no energy consumption. [0003] Patent application 96101108.4 discloses a driving device, which is different from ordinary one-way devices in tha...

AI Technical Summary

Problems solved by technology

For the above three devices to work normally, the necessary condition is to maintain the "rotation difference" stably. However, in the actual door movement environment, the rotation speed works according to the three states of increasing speed, uniform speed and decreasing speed, and it is difficult to maintain the "rotation difference" state throughout the process.

As a result, there will be a momentary combined braking during the door opening process, causing the door to run unevenly, causing severe braking noise, affecting the life of the device, and even failing to open the door

Images