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CN-224214003-U - Damping-variable random stop mechanism

CN224214003UCN 224214003 UCN224214003 UCN 224214003UCN-224214003-U

Abstract

The utility model discloses a variable damping random stopping mechanism which comprises a cylinder body, a piston and a piston rod, wherein the piston is connected in the cylinder body in a sliding way, an air passage is formed in the front and the rear of the piston in a penetrating way, one end of the piston rod is arranged in the cylinder body and fixedly connected with the piston, a first annular groove and a second annular groove are formed in the periphery of the piston, the random stopping mechanism also comprises a fixed piston ring and a movable piston ring, the fixed piston ring is matched with the first annular groove and is arranged in the first annular groove, the periphery of the fixed piston ring is propped against the inner wall of the cylinder body, the movable piston ring is arranged in the second annular groove, the inner periphery and the outer periphery of the movable piston ring are propped against the bottom of the second annular groove and the inner wall of the cylinder body respectively, and taper is formed in the bottom of the second annular groove. The utility model provides a variable damping random stopping mechanism, which has simpler structure and does not need to be filled with damping oil.

Inventors

  • YING DUANZHONG
  • WEI WEILIN

Assignees

  • 宁波一力实业有限公司

Dates

Publication Date
20260508
Application Date
20250529

Claims (6)

  1. 1. The utility model provides a mechanism is stopped at will to variable damping, its characterized in that includes cylinder body, piston and piston rod, piston sliding connection is in the cylinder body, the piston runs through around and is provided with the air flue, piston rod one end sets up in the cylinder body to with piston fixed connection, the periphery of piston is provided with first ring channel and second ring channel, stop at will the mechanism still includes fixed piston ring and movable piston ring, fixed piston ring and first ring channel adaptation install in first ring channel, the periphery of fixed piston ring offsets with the cylinder body inner wall, movable piston ring sets up in the second ring channel, the inside and outside week of movable piston ring offsets with the tank bottom of second ring channel and the inner wall of cylinder body respectively, the tank bottom of second ring channel is provided with the tapering, the width of second ring channel is w1, the width of movable piston ring is w2, w1> w2, the preceding lateral wall or the back lateral wall of second ring channel offsets with movable piston ring.
  2. 2. A variable damping random access mechanism according to claim 1, wherein the taper of the groove bottom of the second annular groove is a,0 ° < a <3 °.
  3. 3. A variable damping random access mechanism according to claim 1, wherein 1mm < w1-w2<5mm.
  4. 4. A variable damping random stopping mechanism according to claim 1, wherein the depth of the front side groove of the second annular groove is d, which is smaller than the depth of the rear side groove, and 2mm < d <8mm.
  5. 5. The variable damping random stopping mechanism according to claim 1, wherein the piston is provided with a mounting hole penetrating through the front and rear of the piston, the end portion of the piston rod penetrates through the mounting hole, a boss is arranged on the periphery of the piston rod, and a nut is connected to the end portion of the piston rod in a threaded manner and presses the piston onto the boss.
  6. 6. The variable damping random stopping mechanism according to claim 1, wherein the cylinder body comprises a cylinder part, a cover plate and a guide sleeve, the cover plate and the guide sleeve are respectively locked at two ends of the cylinder part, the piston is slidably connected in the cylinder part, the piston rod is matched with the guide sleeve, and the piston rod penetrates through the guide sleeve and is slidably connected with the guide sleeve.

Description

Damping-variable random stop mechanism Technical Field The utility model relates to the technical field of dampers, in particular to a variable damping random stopping mechanism. Background Some existing dampers need unequal effects of bidirectional damping, for example, in a window which is opened up and down, the damping is smaller when the window is opened up, the downward damping is larger, the window is prevented from being automatically closed under the action of gravity, damping oil is filled into the existing dampers, the risk of oil leakage exists, and the structure is more complex. Disclosure of utility model The utility model provides a variable damping random stopping mechanism which is simpler in structure and does not need to be filled with damping oil in order to solve the defects of the conventional damper. In order to achieve the above purpose, the utility model adopts the following technical scheme: The utility model provides a variable damping stop at will mechanism, includes cylinder body, piston and piston rod, piston sliding connection is in the cylinder body, the piston runs through around and is provided with the air flue, piston rod one end sets up in the cylinder body to with piston fixed connection, the periphery of piston is provided with first ring channel and second ring channel, stop at will the mechanism still includes fixed piston ring and movable piston ring, fixed piston ring and first ring channel adaptation install in first ring channel, the periphery of fixed piston ring offsets with the cylinder body inner wall, movable piston ring sets up in the second ring channel, the inner and outer periphery of movable piston ring offsets with the tank bottom of second ring channel and the inner wall of cylinder body respectively, the tank bottom of second ring channel is provided with the tapering, the width of second ring channel is w1, the width of movable piston ring is w2, w1> w2, the preceding lateral wall or the back lateral wall of second ring channel offsets with movable piston ring. Through the arrangement, the damping of the bidirectional movement of the piston rod is unequal, damping oil does not need to be poured into the piston rod, and the structure is simpler. Further, the taper of the groove bottom of the second annular groove is a,0 degrees < a <2 degrees. Through the arrangement, the movable piston ring can conveniently move back and forth in the second annular groove. Further, 1mm < w1-w2<5mm. Through the arrangement, the movable range of the movable piston ring is limited, so that the piston rod can be locked more quickly. Further, the depth of the front side groove of the second annular groove is d, which is smaller than that of the rear side groove, and 2mm < d <8mm. Further, the piston is provided with the mounting hole in a penetrating mode from front to back, the end portion of the piston rod penetrates through the mounting hole, the periphery of the piston rod is provided with the boss, the end portion of the piston rod is connected with the nut in a threaded mode, and the nut tightly presses the piston on the boss. Through the arrangement, the piston is conveniently arranged at the end part of the piston rod. Further, the cylinder body comprises a cylinder part, a cover plate and a guide sleeve, the cover plate and the guide sleeve are respectively locked at two ends of the cylinder part, the piston is slidably connected in the cylinder part, the piston rod is matched with the guide sleeve, and the piston rod penetrates through the guide sleeve and is slidably connected with the guide sleeve. Drawings Fig. 1 is a schematic view of the forward movement of the piston rod of the free stop mechanism of the embodiment. Fig. 2 is an enlarged view at a of fig. 1. Fig. 3 is a schematic view of the rearward movement of the piston rod of the optional stop mechanism of the embodiment. Detailed Description The technical scheme of the utility model is further specifically described below through examples and with reference to the accompanying drawings. As shown in fig. 1 to 3, a damping-variable random stopping mechanism comprises a cylinder body 3, a piston 4 and a piston rod 5, wherein the piston 4 is slidably connected in the cylinder body 3, an air passage 6 is arranged in the front and rear of the piston 4 in a penetrating manner, one end of the piston rod 5 is arranged in the cylinder body 3 and fixedly connected with the piston 4, a first annular groove 7 and a second annular groove 8 are arranged on the periphery of the piston 4, the random stopping mechanism further comprises a fixed piston ring 9 and a movable piston ring 10, the fixed piston ring 9 is matched with the first annular groove 7 and is arranged in the first annular groove 7, the periphery of the fixed piston ring 9 is propped against the inner wall of the cylinder body 3, the movable piston ring 10 is arranged in the second annular groove 8, the inner periphery and the outer periphery of the m