Rotary buffer with adjustable damping magnitude

Abstract

The invention discloses a rotary buffer with an adjustable damping magnitude, which comprises a shaft sleeve capable of being filled with a damping oil, and a rotating shaft which is in sealed rotation coordination with the shaft sleeve and can disturb flow of the damping oil, wherein a one-way oil-flowing valve plate is respectively sleeved on two rotor wing plates of the rotating shaft to be matched with an inner cavity wall of the shaft sleeve in a sliding manner, two oil separating ribs abutt the rotating shaft and limit rotation ranges of the rotor wing plates, the bottom of the inner cavity of the shaft sleeve is attached to and in a slip fit relation with radial lower end faces of the rotor wing plates, a pair of oil-discharge grooves which enable the radial lower end faces of the rotor wing plates to form a gap is arranged on the bottom of the inner cavity of the shaft sleeve and beside the two oil separating ribs, a supporting shaft at the tail end of the rotating shaft is nested with a shaft through hole arranged at the bottom part of the shaft sleeve, a pressure regulating runner, which is communicated with the inner cavity of the shaft sleeve and the shaft end face of the supporting shaft, is respectively arranged at two sides of each rotor wing plate on the rotating shaft; an adjusting screw is connected inside the shaft through hole via threads, and a table board capable of contacting the shaft end face so as to block the pressure regulating runner is arranged at the tail end of the screw. The adjusting screw opens the pressure regulating runner, controls the size of a gap between the shaft end face of the supporting shaft and the table board of the screw to adjust the oil flowing speed, changes hydraulic difference between two sides of each rotor wing plate, and adjusts the damping magnitude of the damping oil to the rotor wing plates so as to control the rotating speed of the rotating shaft. The rotary buffer with the adjustable damping magnitude disclosed by the invention is simple in structure, convenient and fast in damping adjustment and stable and reliable in function.

Description

technical field [0001] The invention relates to a hydraulic damping rotary buffer applied to a toilet cover hinge, in particular to a rotary buffer with adjustable damping. Background technique [0002] The existing hydraulic damping rotary buffer is basically composed of a shaft sleeve, a rotating shaft, and a one-way oil paddle. The damping oil in the shaft sleeve is deflected by the shaft. Fast flow in one direction, the damping oil has no hydraulic resistance to the shaft, and the shaft can rotate quickly, but when the shaft rotates in the opposite direction, the oil paddle swings at an angle to close the oil gap so that the damping oil flows slowly, and the damping oil produces hydraulic resistance to act on the shaft , so that the shaft rotates slowly; therefore, adjusting the hydraulic resistance generated by the damping oil in the shaft sleeve (fast oil passing speed, small hydraulic resistance, and small damping) can adjust the speed of the shaft when the damping ro...

AI Technical Summary

Problems solved by technology

[0003] In the existing rotary hydraulic damper, such as the rotary buffer disclosed in the Chinese invention patent application CN101785645A, two or four damping oil supplies are arranged on the middle part of the cylinder body 1 to support the diaphragm 8 at the end of the shaft core 2. flow convection hole 9, and a storage pipe 10 connected to the convection hole 9 is provided inside the other end of the cylinder body 1, and an adjusting member 11 of the channel size of the movable flow storage pipe 10 is inserted in the flow storage pipe 10. By adjusting Part 11 controls the channel size of the flow storage pipeline 10, and adjusts the flow rate of the damping oil through the convection hole 9 and the flow storage pipeline 10, so as to control the rotation speed of the shaft core 2; the above-mentioned rotary buffer damping oil has many parts and complex structures. The assembly efficiency is low, and the arrangement of the partition plate 8 and the complex adjustment parts increases the length of the cylinder body 1, which is not conducive to the miniaturization of the damper.

[0004] The buffer without partition has the slow-falling damping assembly of the toilet lid disclosed in the Chinese utility model patent (CN2664575Y). 1 The end is rotated and supported. During use, the oil core 1 may drive the fixing screw 6 to loosen, resulting in a large gap between the oil core 1 and the end surface of the fixing screw 6, resulting in the hydraulic instability of the damping oil and the oil core 1. The speed is unstable, which affects the function of the damping component

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