Hydraulic damp-adjustable rotating buffer

Abstract

The invention relates to a hydraulic damp-adjustable rotating buffer which comprises a shaft sleeve and a rotating shaft. The shaft sleeve can be filled with damping oil, the rotating shaft and the shaft sleeve are sealed in a running fit mode, flow of the damping oil can be disturbed, two rotary wing plates of the rotating shaft are respectively sleeved with a one-way oil passing valve block to be in sliding fit with the inner cavity wall of the shaft sleeve, the inner cavity wall of the shaft sleeve is provided with two oil separating ribs, the oil separating ribs abut against the rotating shaft, the rotating ranges of the rotary wing plates are limited by the oil separating ribs, the back end of the rotating shaft is provided with a bearing shaft, and the bearing shaft is sleeved with a bearing hole formed in the bottom of an inner cavity of the shaft sleeve. An adjusting hole is formed in the rotating shaft in the axial direction from front to back, and an adjusting screw rod is inserted into the adjusting hole from the front end of the rotating shaft and connected with the adjusting hole in a sealing mode. The positions, on the two sides of the rotary wing plates, of the rotating shaft are respectively provided with a throttling opening for being communicated with the inner cavity of the shaft sleeve and the adjusting hole in the radial direction, and oil passing gaps between the adjusting screw rod and the throttling openings and between the adjusting screw rod and the adjusting hole can be adjusted by rotating the adjusting screw rod. As the adjusting screw rod is fixed in the rotating shaft and is not used for locating or supporting the rotating shaft, the length of the hydraulic damp-adjustable rotating buffer is greatly decreased, and the hydraulic damp-adjustable rotating buffer is simple in structure, rapid, reliable and convenient to assemble or adjust.

Description

technical field [0001] The invention relates to a hydraulic damping buffer for a toilet cover, in particular to a rotary buffer with adjustable hydraulic damping. Background technique [0002] At present, most toilet covers use hydraulic damping buffers to adjust the rotation speed of the cover, so as to realize the functions of quick lifting and slow closing of the cover. The adjustment mechanisms of the existing hydraulic damping buffers are all set This design is not conducive to the miniaturization of the buffer, and the adjustment mechanism may be displaced due to external contact during assembly, or the adjustment accuracy may be affected by the rotation of the shaft during work, resulting in mass production. The speed of the buffer is inconsistent, which causes the cover plate to vibrate due to the different left and right torque when it is rotated and turned down for buffering, and the cover plate buffer is not stable enough. [0003] For example, a damper disclosed...

AI Technical Summary

Problems solved by technology

[0004] Another example is a new type of adjustable buffer disclosed in the Chinese utility model patent (CN2580897Y). The inner cavity of the cylinder body 1 is equipped with a shaft core 2, and the inner cavity of the cylinder body 1 is provided with two symmetrical support pieces 6. 2 is provided with a partition 7 and a vane 8, wherein the support 6, the partition 7 and the vane 8 divide the inner cavity into a pressurized chamber and a non-pressurized chamber. The rear part of the cylinder 1 is provided with an adjustment chamber 11. The rear end of the cylinder is provided with an adjustable back cover 12, and the pressure chamber and the non-pressure chamber in the cylinder 1 have convection holes 13 to communicate with the adjustment chamber 11; although the space of the adjustment chamber 11 is adjusted by turning the back cover 12 to adjust the convection The flow rate of the hole 13 makes the hydraulic damping force of the inner chamber of the cylinder body 1 adjustable to the shaft core 2, realizes the adjustable speed of the shaft core 2, and adjusts the buffering time of the toilet cover; the setting of the convection hole 13 requires an additional partition cylinder The partition between the inner cavity of the body 1 and the adjustment chamber 11, and the connection between the rear cover 12 and the sealing nut at the rear end of the cylinder body 1 to form the adjustment chamber 11 also increases the axial length of the buffer, so this buffer occupies the cover plate The assembly space is large, which is not conducive to the miniaturization design of the product

[0005] Another example is a Chinese utility model patent (CN202118173U) which discloses a speed-adjustable damper, which includes a shaft sleeve 20 that can be filled with damping oil, and a rotating shaft 10 that can seal and rotate with the shaft sleeve 20 and can disturb the flow of the damping oil. Between the rotating shaft 10 and the shaft sleeve 20 there is at least one one-way oil-passing valve plate 30, one end of the shaft sleeve 20 is provided with a seal 40 which can move axially to adjust the length of the inner cavity of the shaft sleeve 20, and a nut is embedded in the rotating shaft 10 50, an adjusting screw 60 passes through the sealing member 40 and is screwed to the nut 50, and the sealing member 40 cooperates with the rotating shaft 10; the sealing member 40 and the rotating shaft 20 rotate together, and the gap between them is adjusted through the screw 60. The flow pressure of the damping oil changes the damping force of the damping oil on the rotating shaft 10, so as to achieve the purpose of adjusting the rotating speed and rotation time of the rotating shaft 10; this damper is connected and linked with the sealing member 40 and the rotating shaft 10 through the screw 60, and the sealing is adjusted through the screw 60 The distance between the sealing member 40 and the rotating shaft 10 in the shaft sleeve 20 is used to adjust the oil passing speed and realize the function of speed regulation; the existing problem is that the linkage between the sealing member 40 and the rotating shaft 10 in the shaft sleeve 20 may cause the screw 60 to loosen and cause The axial distance between the seal 40 and the rotating shaft 10 is changed, and the rear end of the sleeve 20 is provided with the seal 40 to increase the length of the damper

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