A damper with easy adjustment

Abstract

This invention discloses an easily adjustable damper, comprising a rotating rod, with a ring cover and a rotating cylinder rotatably connected to one end of the rotating rod. The ring cover and rotating cylinder are filled with a flowable filler. The ring cover and rotating rod are rotatably connected, and the rotating cylinder is mounted on the ring cover. A sleeve extends from the end of the rotating rod that enters the rotating cylinder. Assembly ridges protrude from both sides of the sleeve, and movable flaps are movably mounted on the assembly ridges. A mandrel is coaxially mounted within the sleeve, and a lifting assembly with its output end movably passing through the assembly ridges and opposite to the movable flaps is mounted within the sleeve. A movable adjusting component, corresponding to and engaging with the lifting assembly, is elastically connected to the rotating cylinder. Before refilling, this invention adjusts the lifting assembly via the movable adjusting component, thereby driving the movable flaps to tightly conform to the inner wall of the rotating cylinder, thus improving the damping effect of relative rotation and maintaining its effectiveness even before refilling.

Description

Technical Field

[0001] This invention relates to the field of damping connection technology for washing machines, specifically a damper that is easy to adjust. Background Technology

[0002] The door of a washing machine may cause noise or even trap a user's hand when it is opened and closed. To prevent the door from falling too quickly and causing a banging sound or injuring the user, washing machines are generally equipped with a damper to slow down the door's descent. This damper provides stable damping force during the closing process.

[0003] Chinese Patent Publication No. CN110699924B discloses a damper and a washing machine having the damper. The damper includes a damping cylinder with an inner cavity; a damping block slidably disposed within the inner cavity, the damping block having a damping chamber inside; a liquid bladder connected to the bottom of the damping block, with a damping hole between the liquid bladder and the damping block; and a push rod, its lower end connected to the top of the damping block and its upper end passing through the damping cylinder. The liquid bladder contains damping fluid. Under external force, the push rod can push the damping block to compress the liquid bladder, thereby causing the damping fluid to flow through the damping hole to the damping chamber to generate damping.

[0004] In this system, the damping fluid may shrink in volume or its damping effect may be affected by problems such as seepage during long-term use. Summary of the Invention

[0005] The purpose of this invention is to provide an easily adjustable damper to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An easily adjustable damper includes a rotating rod, one end of which is rotatably connected to a ring cover and a rotating cylinder. The ring cover and rotating cylinder are filled with a flowable filler. The ring cover and the rotating rod are rotatably connected. The rotating cylinder is mounted on the ring cover. A sleeve extends from the end of the rotating rod that enters the rotating cylinder. Mounting ridges protrude from both sides of the sleeve. Movable flaps are movably mounted on the mounting ridges. A mandrel is coaxially mounted in the sleeve. A lifting assembly with its output end movably passing through the mounting ridges and opposite to the movable flaps is mounted in the sleeve. A movable adjusting member, corresponding to and engaging with the lifting assembly, is elastically connected to the rotating cylinder.

[0007] As a further aspect of the present invention: the active page includes blades, the blades are slidably fitted to the inner wall of the rotating cylinder, and a flexible pad is embedded on the side of the blades facing the inner wall of the rotating cylinder.

[0008] As a further embodiment of the present invention: the blade is provided with a groove on the side facing the mounting edge that engages with the mounting edge, the output end of the lifting component is slidably embedded in the middle of the mounting edge, and the blade is provided with a locking edge that is slidably embedded in the mounting edge and is opposite to the output end of the lifting component.

[0009] As a further embodiment of the present invention: a locking hole corresponding to and slidingly adapted to the end of the mandrel is embedded in the center of the end of the rotating cylinder away from the ring cover; the end of the lifting component passes through the end of the mandrel and through the locking hole and then engages with the movable adjusting component in a transmission cooperation; and a mounting base is fixedly connected to the end of the rotating cylinder away from the ring cover.

[0010] As a further aspect of the present invention: a sealing ring is embedded between the outer periphery of the sleeve and the ring cover, and the sealing ring is positioned facing the rotating cylinder.

[0011] As a further aspect of the present invention, the inner wall of the rotating cylinder is fixedly provided with protruding ridges.

[0012] As a further embodiment of the present invention: the mounting base is provided with a movable hole, the movable hole and the locking hole are connected, the end of the movable adjustment member is elastically connected to the movable hole by a spring, and the end of the lifting component extends into the movable hole from the locking hole side and is connected to the movable adjustment member in a transmission engagement.

[0013] As a further aspect of the present invention: the lifting assembly includes a sliding piece slidably embedded in a sleeve, a first elastic sleeve elastically sleeved around the sliding piece, the first elastic sleeve being fixedly connected in the sleeve, the sliding piece slidingly penetrating the sleeve and extending out from the middle of the assembly edge, an extension connecting rod movably disposed in the middle of the mandrel, a sliding rod fixedly sleeved around the extension connecting rod, arc-shaped convex surfaces corresponding to and adapted to the sliding piece being provided on both sides of the sliding rod, and the end of the extension connecting rod away from the sliding rod extending out from the end of the mandrel and correspondingly engaging with the movable adjusting component.

[0014] As a further aspect of the present invention: a second elastic sleeve is elastically fitted to the outer periphery of the sliding rod away from the extension link, the second elastic sleeve is fixedly embedded in the sleeve, a toothed ring is fixedly fitted on the outer periphery of the sliding rod away from the extension link, and a locking plate is correspondingly fitted on both sides of the toothed ring, the locking plate is fixedly connected to the inner wall of the sleeve.

[0015] As a further embodiment of the present invention: an elastic wedge is elastically embedded on the side of the end of the extension link, the elastic wedge is inclined on the side facing the movable adjustment member, the extension link and the movable adjustment member are movably sleeved, and the elastic wedge and the movable adjustment member are correspondingly snapped and adapted.

[0016] As a further embodiment of the present invention: the movable adjusting component includes a sliding tube, a gasket is fixedly sleeved on the periphery of one end of the sliding tube, the gasket and the movable hole are slidably adapted, and a spring is provided between the gasket and the movable hole, the sliding tube is open towards the locking hole, the sliding tube and the extension connecting rod are correspondingly sleeved and adapted, the two sides of the sliding tube are symmetrically provided with strip-shaped through holes, the elastic wedge is correspondingly locked and adapted to the strip-shaped through holes, and a handle protrusion is fixedly connected to the end of the sliding tube extending out of the mounting base.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the rotating rod rotates relative to the ring cover and the rotating cylinder through the ring cover, and the rotating rod, the mandrel, and the sleeve rotate synchronously. The end of the mandrel and the end of the rotating cylinder are in a movable fit, thereby forming a stable relative rotational fit. The movable leaf connected to the sleeve through the assembly rib fit can form a buffer due to the fluid resistance filling the space between the ring cover and the rotating cylinder, thus forming a damping effect. In specific use, the fluid filling the ring cover and the rotating cylinder may shrink in volume or affect the damping effect due to problems such as seepage during long-term use, which may cause the device to fail. Before refilling, the lifting assembly is adjusted by the movable adjustment component, thereby driving the movable leaf to fit tightly against the inner wall of the rotating cylinder, thereby improving the damping effect of relative rotation and maintaining the usability before refilling. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the rotating rod connected to the movable page in this invention.

[0020] Figure 3 This is a schematic diagram of the rotating rod in this invention.

[0021] Figure 4 This is a schematic diagram of the structure of the active page in this invention.

[0022] Figure 5 This is a schematic diagram of the rotating cylinder in this invention.

[0023] Figure 6 This is a cross-sectional view of the rotating cylinder in this invention.

[0024] Figure 7 This is a schematic diagram of the structure of the movable adjustment component in this invention.

[0025] Figure 8 This is a schematic diagram of the lifting component in this invention.

[0026] In the diagram: 1-Rotating rod, 11-Mandrel, 12-Sleeve, 13-Sealing ring, 14-Assembly ridge, 2-Ring cover, 3-Rotating cylinder, 31-Protruding ridge, 32-Clamping hole, 33-Moving hole, 4-Mounting base, 5-Moving leaf, 51-Blade, 52-Clamping groove, 53-Clamping ridge, 6-Lifting assembly, 61-Sliding piece, 62-Sliding rod, 63-Gear ring, 64-Clamping plate, 65-First elastic sleeve, 66-Arc-shaped convex surface, 67-Second elastic sleeve, 68-Extension connecting rod, 69-Elastic wedge, 7-Moving adjustment component, 71-Sliding tube, 72-Shim, 73-Handle protrusion, 74-Strip through hole. Detailed Implementation Example 1

[0027] Please see Figures 1-3 In this embodiment of the invention, an easily adjustable damper includes a rotating rod 1. One end of the rotating rod 1 is rotatably connected to a ring cover 2 and a rotating cylinder 3. The ring cover 2 and the rotating cylinder 3 are filled with a flowable filler. The ring cover 2 and the rotating rod 1 are rotatably connected. The rotating cylinder 3 is assembled and connected to the ring cover 2. The end of the rotating rod 1 that extends into the rotating cylinder 3 is provided with a sleeve 12. The two sides of the sleeve 12 are provided with mounting ridges 14. Movable flaps 5 are movably assembled and connected to the mounting ridges 14. A mandrel 11 is coaxially arranged in the sleeve 12. A lifting component 6 with its output end movably passing through the mounting ridges 14 and opposite to the movable flaps 5 is assembled and connected in the sleeve 12. A movable adjusting component 7 that is correspondingly driven and engaged with the lifting component 6 is elastically connected to the rotating cylinder 3.

[0028] In this preferred embodiment, the fluid filling material in the space between the ring cover 2 and the rotating cylinder 3 is generally a highly viscous fluid, such as a paste. The specific material selection is based on existing technology, and its composition will not be further disclosed here. The rotating rod 1 rotates relative to the ring cover 2 and the rotating cylinder 3 via the ring cover 2. The rotating rod 1, the spindle 11, and the sleeve 12 rotate synchronously. The end of the spindle 11 and the end of the rotating cylinder 3 are in a movable fit, thus forming a stable relative rotational fit. The movable leaf 5, connected to the sleeve 12 by the mounting ridge 14, can form a buffer due to the resistance of the fluid filling the space between the ring cover 2 and the rotating cylinder 3, thereby creating a damping effect. In actual use, the fluid filling the ring cover 2 and the rotating cylinder 3 may shrink in volume over long-term use or affect the damping effect due to permeation, causing the device to fail. Before refilling, the lifting assembly 6 is adjusted by the movable adjusting component 7, thereby driving the movable leaf 5 to tightly adhere to the inner wall of the rotating cylinder 3, thus improving the relative rotational damping effect and maintaining its effectiveness before refilling.

[0029] like Figures 3-4As shown, the movable page 5 includes a blade 51, which is slidably fitted to the inner wall of the rotating cylinder 3. A flexible pad, such as a rubber pad, is embedded in the side of the blade 51 facing the inner wall of the rotating cylinder 3. This allows the lifting assembly 6 to drive the movable page 5 to fit against the inner wall of the rotating cylinder 3 when the damping effect fails, thereby increasing relative friction and achieving a damping effect. This provides time for replenishing the flowing filler, making it more convenient to use. The side of the blade 51 facing the mounting ridge 14 has a groove 52 that engages with the mounting ridge 14. The output end of the lifting assembly 6 is slidably embedded in the middle of the mounting ridge 14. The blade 51 has a retaining ridge 53 that is slidably embedded in the mounting ridge 14 and opposite to the output end of the lifting assembly 6. Thus, the blade 51 can be fitted onto the mounting ridge 14 through the groove 52, allowing it to contact the internal flowing filler during rotation to achieve a buffering effect. The lifting assembly 6 can also push the blade 51 to fit tightly against the rotating cylinder 3 through its engagement with the retaining ridge 53.

[0030] like Figure 5 As shown, the rotating cylinder 3, at its center furthest end from the ring cover 2, has a locking hole 32 that corresponds to and slides with the end of the spindle 11. The end of the lifting assembly 6 passes through the end of the spindle 11 and through the locking hole 32, and then engages with the movable adjusting component 7. This arrangement facilitates adjustment and control, and also ensures the stability of the rotating rod 1, the ring cover 2, and the rotating cylinder 3 during relative rotation. Furthermore, the rotating cylinder 3 and the ring cover 2 can be connected by screws. A sealing ring 13 is embedded between the outer periphery of the sleeve 12 and the ring cover 2, with the sealing ring 13 facing the rotating cylinder 3. This arrangement improves the sealing effect within the space between the ring cover 2 and the rotating cylinder 3, reducing leakage of the internal flowing filler.

[0031] Furthermore, a protruding rib 31 is fixedly provided on the inner wall of the rotating cylinder 3. The protruding rib 31 can block the assembly rib 14 and the movable leaf 5, thereby limiting the relative rotation angle of the rotating rod 1, the ring cover 2, and the rotating cylinder 3. A mounting base 4 is fixedly connected to the end of the rotating cylinder 3 away from the ring cover 2. A threaded hole (not shown in the figure) can be provided on the side of the mounting base 4, so that the rotating cylinder 3 can be easily installed in a fixed position through the mounting base 4.

[0032] like Figures 6-8As shown, the mounting base 4 has an embedded movable hole 33, which communicates with the locking hole 32. The end of the movable adjusting member 7 is elastically connected to the movable hole 33 by a spring. The end of the lifting assembly 6 extends into the movable hole 33 from one side of the locking hole 32 and is connected to the movable adjusting member 7 in a transmission engagement. The lifting assembly 6 includes a sliding piece 61 slidably embedded in the sleeve 12. A first elastic sleeve 65 is elastically sleeved around the sliding piece 61. The first elastic sleeve 65 is fixedly connected in the sleeve 12. The sliding piece 61 slides through the sleeve 12 and extends out from the middle of the mounting ridge 14. An extension connecting rod 68 is movably disposed in the middle of the spindle 11. A sliding rod 62 is fixedly sleeved around the extension connecting rod 68. Arc-shaped convex surfaces 66 corresponding to and adapted to the sliding piece 61 are provided on both sides of the sliding rod 62. The end of the extension connecting rod 68 away from the sliding rod 62 extends out from the end of the spindle 11 and is connected to the movable adjusting member 7 in a transmission engagement. After the ring cover 2 and the rotating cylinder 3 are assembled, the end of the extension link 68 can form a transmission engagement with the movable adjustment component 7. When adjustment is required, the movable adjustment component 7 is rotated to drive the extension link 68 and the sliding rod 62 to rotate, so that the arc-shaped convex surface 66 pushes the sliding plate 61. In this way, the sliding plate 61 can lift the movable page 5. This setting can increase the friction and thus maintain the damping effect of the device before the flow filler is replenished.

[0033] To maintain the effect of the sliding piece 61 pushing the movable page 5, a second elastic sleeve 67 is elastically connected to the outer periphery of the end of the sliding rod 62 away from the extension link 68. The second elastic sleeve 67 is fixedly embedded in the sleeve 12. A toothed ring 63 is fixedly sleeved on the outer periphery of the sliding rod 62 away from the extension link 68. A retaining plate 64 is correspondingly engaged on both sides of the toothed ring 63. The retaining plate 64 is fixedly connected to the inner wall of the sleeve 12 and can prevent the toothed ring 63 from rotating. When the movable adjusting component 7 is not pulled, it cannot drive the sliding rod 62 to rotate via the extension link 68. At this time, the toothed ring 63 and the locking plate 64 are engaged. When adjustment is needed, pulling the movable adjusting component 7 causes the sliding rod 62 and the toothed ring 63 to disengage from the locking plate 64. Rotating the movable adjusting component 7 then drives the extension link 68, the sliding rod 62, and the arc-shaped convex surface 66 to rotate. The arc-shaped convex surface 66 pushes the sliding piece 61 to move the movable page 5 towards the rotating cylinder 3. Pushing the movable adjusting component 7 back allows the extension link 68 and the sliding rod 62 to re-engage with the toothed ring 63 and the locking plate 64 under the elastic recovery of the second elastic sleeve 67, thus locking them in place. This engagement method allows control over the tightness between the movable page 5 and the rotating cylinder 3, making control and adjustment convenient and flexible. When the movable adjusting component 7 drives the extension link 68 to move radially, the end of the sliding piece 61 always remains opposite to the arc-shaped convex surface 66 and will not disengage from the engagement range. Both the first elastic sleeve 65 and the second elastic sleeve 67 are hollow shell structures with springs inside. The spring in the first elastic sleeve 65 is connected between the sliding plate 61 and the first elastic sleeve 65, and the spring in the second elastic sleeve 67 is connected between the sliding rod 62 and the second elastic sleeve 67. Preferably, the sliding rod 62 and the second elastic sleeve 67 can also rotate relative to each other.

[0034] Furthermore, for ease of assembly and control of the movable adjusting component 7, an elastic wedge 69 is elastically embedded at the end of the extension rod 68. The elastic wedge 69 is inclined towards the movable adjusting component 7. The extension rod 68 and the movable adjusting component 7 are movably fitted together, and the elastic wedge 69 and the movable adjusting component 7 are correspondingly engaged. When the ring cover 2 and the rotating cylinder 3 are assembled, the extension rod 68 extends into the movable adjusting component 7, and the elastic wedge 69 and the movable adjusting component 7 are engaged. In this way, the movable adjusting component 7 can both drive the extension rod 68 to move radially and rotate. This configuration facilitates control and adjustment. When it is necessary to disengage, simply pinch the elastic wedge 69 into the extension rod 68 to disengage it from the movable adjusting component 7. Assembly and connection are convenient. The movable adjustment component 7 includes a sliding tube 71. A gasket 72 is fixedly sleeved around one end of the sliding tube 71. The gasket 72 and the movable hole 33 are slidably adapted, and a spring is provided between the gasket 72 and the movable hole 33. The sliding tube 71 is open towards the locking hole 32. The sliding tube 71 and the extension connecting rod 68 are correspondingly sleeved and adapted. The sliding tube 71 has symmetrical strip-shaped through holes 74 on both sides. The elastic wedge 69 is correspondingly locked and adapted to the strip-shaped through holes 74. The end of the sliding tube 71 extending out of the mounting base 4 is fixedly connected to a handle protrusion 73. The handle protrusion 73 can drive the sliding tube 71 to rotate and move radially, thereby facilitating the synchronous movement of the extension connecting rod 68 through the sliding tube 71. When the ring cover 2 and the rotating cylinder 3 are assembled, the extension connecting rod 68 can extend into the sliding tube 71, and the elastic wedge 69 extends out through the strip-shaped through hole 74 and forms a locking adaptation. Example 2

[0035] To further address the issue of uneven contact pressure between the active page 5 and the inner wall of the rotating cylinder 3 after it is lifted, which leads to localized wear of the flexible pad, sudden changes in damping, or unstable adjustment feel, Specifically, let the inner diameter of the rotating cylinder 3 be D, the effective length of the inner cavity of the rotating cylinder 3 along the axial direction of the mandrel 11 be L, and the thickness of the flexible pad embedded on the side of the blade 51 facing the inner wall of the rotating cylinder 3 be set to 0.025 to 0.045 times D. This flexible pad thickness is used to provide a controlled elastic compression margin after the movable page 5 is lifted, so that the blade 51 will not be directly pressed against the inner wall of the rotating cylinder 3 in a rigid manner.

[0036] The maximum effective extension of the sliding piece 61 from the center of the assembly ridge 14 towards the movable page 5 is set to 0.10 to 0.22 times the thickness of the flexible pad, and this maximum effective extension is not greater than 0.08 times the radial thickness of the blade 51. This setting ensures that the pushing action of the sliding piece 61 on the locking ridge 53 and the blade 51 is primarily converted into controlled compression of the flexible pad, rather than causing significant swaying of the blade 51 relative to the assembly ridge 14.

[0037] The maximum radial protrusion height of the arc-shaped convex surface 66 relative to the outer circumferential reference surface of the sliding rod 62 is set to 1.05 to 1.25 times the maximum effective extension of the sliding piece 61. The center angle corresponding to the effective transition arc of the arc-shaped convex surface 66 along the circumference of the sliding rod 62 is set to 32 to 48 degrees. This dimensional relationship allows the arc-shaped convex surface 66 to gradually push the sliding piece 61 outward when the movable adjusting member 7 drives the sliding rod 62 to rotate, avoiding the sliding piece 61 from suddenly being pushed out within a small rotation angle, which would cause the movable page 5 to momentarily press against the inner wall of the rotating cylinder 3.

[0038] The effective contact length of blade 51 along the axial direction of mandrel 11 is set to 0.62 to 0.78 times the effective length L of the inner cavity of rotating cylinder 3; the central angle corresponding to the effective circumferential contact width of blade 51 facing the inner wall of rotating cylinder 3 is set to 12 to 20 degrees. By limiting the axial and circumferential contact ranges between blade 51 and the inner wall of rotating cylinder 3, the movable page 5 can form a surface contact after being lifted, rather than forming a local point contact or a narrow line contact.

[0039] Furthermore, the transition radius of the flexible pad at both ends of the blade 51 is set to 0.18 to 0.32 times the thickness of the flexible pad. This transition radius is used to reduce the edge contact between the circumferential end of the flexible pad and the inner wall of the rotating cylinder 3, and to prevent the movable blade 5 from contacting at the edge first, experiencing localized edge wear, or curling at the edge during rotation.

[0040] To ensure that the movable page 5 does not wobble to one side when lifted by the sliding piece 61, the groove depth of the slot 52 is set to 0.46 to 0.64 times the radial height of the mounting ridge 14, the one-sided mating clearance between the slot 52 and the mounting ridge 14 is set to 0.03 mm to 0.08 mm, and the effective guide length of the locking ridge 53 embedded in the mounting ridge 14 is set to 0.35 to 0.55 times the width of the mounting ridge 14. This set of dimensional relationships ensures that the movable page 5 is stably supported by the mounting ridge 14 during lifting, holding, and releasing, and that the locking ridge 53 guides the pushing direction of the sliding piece 61, reducing the risk of the movable page 5 skewing relative to the mounting ridge 14.

[0041] Among them, the thickness of the flexible pad, the maximum effective extension of the sliding piece 61, the maximum radial protrusion height of the arc-shaped convex surface 66, and the transition angle of the arc-shaped convex surface 66 are mainly used to control the smoothness of the push when the movable page 5 is lifted in the early stage; the effective contact length of the blade 51, the effective circumferential contact width, and the transition radius of the flexible pad are mainly used to control the contact area and force distribution after the movable page 5 is attached to the inner wall of the rotating cylinder 3; the groove depth of the slot 52, the fitting clearance between the slot 52 and the assembly ridge 14, and the effective guide length of the ridge 53 are mainly used to control the posture stability of the movable page 5 during continuous force and repeated adjustment.

[0042] When the fluid filling material inside the ring cover 2 and the rotating cylinder 3 shrinks, permeates, or decreases in volume due to long-term use, and it is necessary to enhance the damping effect through the movable adjustment component 7, the movable adjustment component 7 drives the extension connecting rod 68 and the sliding rod 62 to rotate. The arc-shaped convex surface 66 on the sliding rod 62 gradually pushes the sliding piece 61 outward. The sliding piece 61 then acts on the locking ridge 53 and the blade 51, causing the movable page 5 to further conform to the inner wall of the rotating cylinder 3. Since the maximum radial protrusion height and transition arc angle of the arc-shaped convex surface 66 are limited within the above range, the outward movement of the sliding piece 61 can maintain a continuous transition, avoiding the movable page 5 being suddenly pressed, thereby reducing the problems of sudden changes in damping force and stiff feel during the adjustment process.

[0043] From the perspective of contact mechanics, after the movable page 5 is lifted, the average contact pressure between the flexible pad and the inner wall of the rotating cylinder 3 can be approximately expressed as:

[0044] Where p represents the average contact pressure between the flexible pad and the inner wall of the rotating cylinder 3, F_N represents the normal force transmitted from the sliding piece 61 to the flexible pad via the locking ridge 53 and the blade 51, and A c This represents the effective contact area between the flexible pad and the inner wall of the rotating cylinder 3. From this relationship, it can be seen that under a normal force F... N At a given time, the effective contact area A c Too small a value will lead to an increase in the average contact pressure p, and further cause localized wear of the flexible pad; within the effective contact area A c At a certain time, if the sliding piece 61 extends too far, it will cause a normal force F. N Excessive force will cause a sudden increase in rotational resistance. Therefore, this embodiment limits the maximum effective extension of the sliding piece 61, the thickness of the flexible pad, the effective contact length of the blade 51, and the effective circumferential contact width to keep the normal force and the effective contact area coordinated, thereby making the contact pressure distribution more uniform after the movable page 5 is lifted.

[0045] From the perspective of frictional damping mechanism, the frictional damping torque formed after the movable page 5 adheres to the inner wall of the rotating cylinder 3 can be approximately expressed as:

[0046] Among them, M f F represents the frictional damping torque formed between the active page 5 and the inner wall of the rotating cylinder 3, μ represents the coefficient of friction between the flexible pad and the inner wall of the rotating cylinder 3, and F represents the frictional damping torque between the active page 5 and the inner wall of the rotating cylinder 3. N R represents the normal force exerted by the movable page 5 against the inner wall of the rotating cylinder 3, and R represents the equivalent radius of the contact point between the movable page 5 and the inner wall of the rotating cylinder 3 relative to the axis of the spindle 11. From this relationship, it can be seen that increasing F... N It can increase the friction damping torque M f But F NBigger isn't always better. If F N If F is too small, the activity page 5 cannot effectively compensate for the decrease in damping after the flow packing decays; if F N If the friction is too large, the friction between the flexible pad and the inner wall of the rotating cylinder 3 will be too high, which can easily cause a sudden increase in rotational resistance, a stiff adjustment feel, and local wear of the flexible pad. Therefore, in this embodiment, the maximum effective extension of the sliding piece 61 is limited to 0.10 to 0.22 times the thickness of the flexible pad, and the total compression of the flexible pad after being compressed is controlled to be 0.08 to 0.18 times its thickness, so that the friction damping torque can increase smoothly with the adjustment action of the movable adjusting member 7, rather than suddenly jumping.

[0047] When the thickness of the flexible pad is less than 0.025 times the inner diameter D of the rotating cylinder 3, the flexible pad lacks sufficient elastic compression margin, and even a slight protrusion of the sliding plate 61 may cause the blade 51 to locally and rigidly press against the inner wall of the rotating cylinder 3. When the thickness of the flexible pad is greater than 0.045 times D, the flexible pad itself undergoes excessive shear deformation, which can easily lead to rotational drag, edge curling, or fatigue wear. Limiting the thickness of the flexible pad to 0.025 to 0.045 times D can balance elastic buffering, contact pressure equalization, and long-term wear resistance.

[0048] When the maximum effective extension of the sliding piece 61 is less than 0.10 times the thickness of the flexible pad, the contact tightness of the movable leaf 5 is insufficient, failing to effectively compensate for the damping decrease after the flow filler decays. When the maximum effective extension of the sliding piece 61 is greater than 0.22 times the thickness of the flexible pad, or greater than 0.08 times the radial thickness of the blade 51, the local pushing force of the sliding piece 61 on the movable leaf 5 is too strong, easily causing the blade 51 to wobble slightly around the area near the assembly ridge 14, resulting in excessive compression of the flexible pad in a local area. Therefore, controlling the extension of the sliding piece 61 within the above range can achieve a balance between damping compensation and contact pressure uniformity.

[0049] When the maximum radial protrusion height of the arc-shaped convex surface 66 is less than 1.05 times the maximum effective extension of the sliding piece 61, considering the springback of the first elastic sleeve 65, processing errors, and contact deformation, the sliding piece 61 may not be able to stably reach the predetermined ejection position. When it is greater than 1.25 times the maximum effective extension of the sliding piece 61, the arc-shaped convex surface 66 generates excessive pushing allowance on the sliding piece 61, which can easily cause a sudden increase in resistance at the end of the adjustment. When the effective transition arc of the arc-shaped convex surface 66 corresponds to a central angle of less than 32 degrees, the pushing slope of the arc-shaped convex surface 66 on the sliding piece 61 is too large, and the movable page 5 can easily press against the inner wall of the rotating cylinder 3 quickly. When it is greater than 48 degrees, the pushing transition is too slow, the damping change between adjacent adjustment positions is not obvious, and the user cannot obtain clear adjustment feedback. Therefore, limiting the central angle to 32 to 48 degrees can balance the smoothness of pushing and the clarity of adjustment.

[0050] When the effective contact length of blade 51 along the axial direction of spindle 11 is less than 0.62 times the effective length L of the inner cavity of rotating cylinder 3, the axial contact range between the flexible pad and the inner wall of rotating cylinder 3 is insufficient, and the normal force is easily concentrated in the middle or local area of ​​blade 51. When it is greater than 0.78 times L, the clearance between the end of blade 51 and the inner end face of rotating cylinder 3, the structure on one side of ring cover 2, or the area near sealing ring 13 becomes smaller, and end scraping is easily generated during repeated rotation. When the circumferential effective contact width of blade 51 corresponds to a central angle of less than 12 degrees, the contact band is too narrow and it is easy to form a linear high-pressure contact. When it is greater than 20 degrees, although the contact area increases, the shear resistance during rotation is too large, which can easily lead to unsmooth release and excessive rotation. Therefore, the above-mentioned size range can enable the movable blade 5 to form a moderate planar contact with the inner wall of rotating cylinder 3.

[0051] When the transition radius of the flexible pad at both ends of the blade 51 is less than 0.18 times the thickness of the flexible pad, the transition at the ends of the flexible pad is steep, and edge contact and edge wear are likely to occur after the movable blade 5 is lifted. When the transition radius is greater than 0.32 times the thickness of the flexible pad, the flat bearing area in the middle of the flexible pad is weakened, which will increase the contact pressure in the middle. Therefore, limiting the transition radius to 0.18 to 0.32 times the thickness of the flexible pad can simultaneously ensure the smoothness of the edge introduction and the bearing area in the middle.

[0052] Furthermore, the dimensional relationship between the slot 52, the assembly ridge 14, and the locking ridge 53 is used to prevent the movable page 5 from tilting after being lifted. When the depth of the slot 52 is less than 0.46 times the radial height of the assembly ridge 14, the movable page 5 provides insufficient support for the assembly ridge 14, and the sliding piece 61 is prone to causing the blade 51 to wobble on one side when pushing the locking ridge 53. When the depth of the slot 52 is greater than 0.64 times the radial height of the assembly ridge 14, the micro-movement allowance of the movable page 5 relative to the assembly ridge 14 is too small, and the lifting and releasing process is easily obstructed. When the unilateral fit clearance between the slot 52 and the assembly ridge 14 is less than 0.03 mm, the movable page 5 is prone to movement difficulties due to machining errors and the adhesion of flowing filler. When it is greater than 0.08 mm, the lateral wobbling allowance of the movable page 5 is too large, which can easily cause uneven bonding pressure. When the effective guide length of the locking ridge 53 is less than 0.35 times the width of the assembly ridge 14, the pushing guidance of the sliding piece 61 on the locking ridge 53 is insufficient; when it is greater than 0.55 times, the sliding contact length between the locking ridge 53 and the assembly ridge 14 is too large, increasing the frictional resistance during release. Therefore, this set of dimensional relationships enables the movable page 5 to maintain a stable posture during being lifted, held, and released, avoiding local overpressure of the flexible pad layer caused by the root misalignment of the movable page 5.

[0053] In summary, the technical advantages of this embodiment are as follows: by defining the dimensional relationships between the arc-shaped convex surface 66, the sliding piece 61, the movable page 5, the flexible pad, the inner wall of the rotating cylinder 3, the slot 52, the assembly ridge 14, and the ridge 53 in a set manner, the pushing process after the movable page 5 is lifted is smoother, the contact pressure between the flexible pad and the inner wall of the rotating cylinder 3 is more uniform, the risk of local abutment and local wear is reduced, and the damping compensation process is less prone to sudden changes; at the same time, the posture stability of the movable page 5 is improved during continuous force and repeated adjustment, which can take into account damping compensation, smooth release, and long-term use consistency.

Claims

1. An easily adjustable damper, comprising a rotating rod, wherein a ring cover and a rotating cylinder are rotatably connected to one end of the rotating rod, characterized in that, The ring cover and the rotating cylinder are filled with a fluid filler. The ring cover and the rotating rod are rotatably connected. The rotating cylinder is assembled and connected to the ring cover. The end of the rotating rod that extends into the rotating cylinder is provided with a sleeve. The two sides of the sleeve are provided with assembly ridges. Movable flaps are movably assembled and connected to the assembly ridges. A mandrel is coaxially arranged in the sleeve. A lifting component with its output end movably passing through the assembly ridge and arranged opposite to the movable flap is assembled and connected in the sleeve. A movable adjusting component that is elastically connected to the rotating cylinder and is in transmission cooperation with the lifting component is provided.

2. The easily adjustable damper according to claim 1, characterized in that, The active page includes blades, which are slidably fitted to the inner wall of the rotating cylinder, and a flexible pad is embedded on the side of the blade facing the inner wall of the rotating cylinder.

3. The easily adjustable damper according to claim 2, characterized in that, The blade has a slot on the side facing the mounting edge that engages with the mounting edge. The output end of the lifting component is slidably embedded in the middle of the mounting edge. The blade has a locking edge that is slidably embedded in the mounting edge and is opposite to the output end of the lifting component.

4. A damper that is easy to adjust according to claim 1 or 3, characterized in that, The rotating cylinder has a locking hole at the center of its end away from the ring cover, which is slidably adapted to the end of the spindle. The end of the lifting component passes through the end of the spindle and through the locking hole, and then engages with the movable adjusting component in a transmission cooperation. The end of the rotating cylinder away from the ring cover is fixedly connected to a mounting base.

5. The easily adjustable damper according to claim 4, characterized in that, A sealing ring is embedded between the outer periphery of the sleeve and the ring cover, and the sealing ring is positioned facing the rotating cylinder.

6. The easily adjustable damper according to claim 4, characterized in that, The inner wall of the rotating cylinder is fixedly provided with protruding ribs.

7. The easily adjustable damper according to claim 4, characterized in that, The mounting base is embedded with a movable hole, which is connected to the locking hole. The end of the movable adjustment component is elastically connected to the movable hole by a spring. The end of the lifting component extends into the movable hole from the locking hole side and is connected to the movable adjustment component in a transmission engagement.

8. The easily adjustable damper according to claim 7, characterized in that, The lifting assembly includes a sliding piece slidably embedded in a sleeve, a first elastic sleeve elastically sleeved around the sliding piece, the first elastic sleeve being fixedly connected in the sleeve, the sliding piece slidingly penetrating the sleeve and extending out from the middle of the assembly ridge, an extension connecting rod movably disposed in the middle of the mandrel, a sliding rod fixedly sleeved around the extension connecting rod, arc-shaped convex surfaces corresponding to and adapted to the sliding piece being provided on both sides of the sliding rod, and the end of the extension connecting rod away from the sliding rod extending out from the end of the mandrel and correspondingly engaging with the movable adjusting component.

9. The easily adjustable damper according to claim 8, characterized in that, A second elastic sleeve is elastically fitted to the outer periphery of the sliding rod away from the extension link. The second elastic sleeve is fixedly embedded in the sleeve. A toothed ring is fixedly fitted on the outer periphery of the sliding rod away from the extension link. A retaining plate is correspondingly fitted on both sides of the toothed ring. The retaining plate is fixedly connected to the inner wall of the sleeve.

10. The easily adjustable damper according to claim 9, characterized in that, An elastic wedge is elastically embedded on the side of the end of the extension link. The elastic wedge is inclined on the side facing the movable adjustment member. The extension link and the movable adjustment member are movably sleeved together, and the elastic wedge and the movable adjustment member are correspondingly snapped together and adapted.

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