CN217137860U - Damper - Google Patents

Abstract

The utility model discloses a damper, form uncovered open-ended casing, pivot, gland and two blades including the upper end face, central symmetry is equipped with two on the casing internal perisporium and separates the fender, the pivot includes inserted part, extension and sealing part, central symmetry is equipped with two and pushes away the wing, two on the inserted part periphery wall the blade movable sleeve locates two and pushes away on the wing respectively, the blade with push away the oil return passage that forms the switch between the wing, the casing internal perisporium with the space of inserted part periphery wall by separate keep off, the blade with push away the wing and divide two centrosymmetric high-pressure chamber and two centrosymmetric low pressure chambers, central symmetry is equipped with two bloated roots on the inserted part periphery wall, bloated root connect in sealing part with push away between the wing. The root that expands connects between sealing part and the push wing, improves the intensity of pivot greatly, can also avoid originally pushing away the closed angle production of wing and sealing part position, avoids the concentration of stress.

Description

Damper

Technical Field

The utility model relates to a attenuator especially relates to a miniature attenuator.

Background

For aesthetic design, the existing toilet cover is thinner and thinner, the whole height is smaller and smaller, correspondingly, the space reserved in the toilet cover for installing the damper is smaller and smaller, and the external dimension of the damper is also smaller and smaller to be matched.

The smaller the damper size, the smaller the torque. Therefore, in order to ensure that the output torque is kept constant after the size of the damper is reduced, the structural requirements of the damper are higher, and the problems of strength, production assembly, cost and the like are considered. The method for improving the torque of the small damper in the market is that a sealing technology of a metal shell is adopted, so that the requirement on the size precision of parts is high, the assembly is complex, the production difficulty is increased, and the production cost is greatly increased. In addition, the structure of the metal shell seal also causes the torque of the damper to be unadjustable.

SUMMERY OF THE UTILITY MODEL

The utility model provides a damper, it has overcome the assembly that the background art mentioned more complicated, the production degree of difficulty is big, manufacturing cost increases's technical problem. The utility model provides a technical scheme that its technical problem adopted is:

the attenuator, form uncovered open-ended casing, pivot, gland and two blades including the up end, central symmetry is equipped with two on the casing internal perisporium and separates the fender, the pivot is including stretching into the casing inner chamber insert the part, expose in the outside extension of casing and stop up uncovered open-ended seal part, the gland connect in the casing restricts seal part, central symmetry is equipped with two and pushes away the wing on the insert part periphery wall, two the blade movable sleeve is located two and pushes away on the wing respectively, form the oil return passageway of switch between blade and the push away the wing, the oil return passageway is in the pivot corotation is opened and is closed when the reversal, casing internal perisporium with the space of insert part periphery wall by separate keep off, blade and push away the wing and divide into two centrosymmetric high-pressure chambeies and two centrosymmetric low-pressure chambeies, the central symmetry is equipped with two root portions that expand on the inserted part periphery wall, the root portion that expands connect in seal partial bottom surface with between the top surface of pushing away the wing, gland and casing all are the working of plastics.

The root that expands on the pivot inserted part is connected between sealing part and the wing that pushes away, can improve the intensity of pivot greatly, makes the pivot can bear bigger moment of torsion, and the root that expands simultaneously can also avoid originally pushing away the wing and seal the closed angle of part position and produce, avoids concentrating of stress, improves the life of attenuator. The utility model discloses a when the attenuator set up the improvement moment of torsion through the structure of the root that expands, gland and casing all are the working of plastics, low in production cost, and the assembly is easy.

In a preferred embodiment: the gland is ultrasonically welded to the housing. The traditional production process can be used, and the production cost is further reduced.

In a preferred embodiment: the shell is characterized in that an oil return groove is formed in the inner peripheral wall of the shell corresponding to the swelling root, the swelling root gradually enters the oil return groove along with the forward rotation of the rotating shaft, and the swelling root gradually exits from the oil return groove along with the reverse rotation of the rotating shaft. When the expanded root is staggered with the oil return groove, the rotating shaft rotates reversely at the moment and the oil return channel is closed, oil in the high-pressure cavity cannot enter the low-pressure cavity quickly and can only flow slowly from gaps among the components, and the damping effect is achieved; when the expanded root enters the oil return groove, the rotating shaft rotates forwards and the oil return passage is opened, oil in the low-pressure cavity enters the high-pressure cavity rapidly from the oil return passage and also enters the high-pressure cavity rapidly from the oil return groove, and therefore the oil return speed is higher.

In a preferred embodiment: the depth of the oil return groove is gradually deepened along the positive rotation direction of the rotating shaft, so that the damping effect is gradually increased and decreased along with the rotation amplitude of the rotating shaft, and the use is more convenient.

In a preferred embodiment: the utility model discloses a sealing device, including gland, casing, clamping ring, gland, casing end face, clamping ring, vertical clamping ring down, the gland lower surface is equipped with vertical decurrent clamping ring along the position in the below, the peripheral face lower part of sealing part is equipped with presses the shoulder, be equipped with the location step on the internal perisporium that the casing opened mouthful position, press the shoulder to support and be in on the location step, the clamping ring restricts press the shoulder, the gland lean on in the casing end face, seal partial outer peripheral face with be equipped with the sealing washer between the clamping ring.

In a preferred embodiment: the center of pivot is equipped with the vertical regulation passageway that runs through, the bottom surface of casing inner chamber is equipped with the intercommunication high-pressure chamber and the spread groove of adjusting the passageway, the inserted part is close to the position of sealing the part is equipped with the intercommunication the oilhole of crossing of low-pressure chamber and regulation passageway still including being used for adjusting the regulation pole of the oily speed of crossing of oilhole, adjust the top screw in of pole from adjusting the passageway. Through the vertical removal of operation regulation pole, can cut off the regulation passageway completely, adjust damping moment to the biggest, also can open the regulation passageway completely, adjust damping moment to the minimum, conveniently adjust the damping of attenuator.

In a preferred embodiment: the adjusting channel is divided into an upper part and a lower part, the connecting position of the upper part and the lower part is transited by a chamfer surface with a wide upper part and a narrow lower part, the edge of the lower end surface of the adjusting rod is chamfered corresponding to the chamfer surface, and the oil passing hole is positioned at the upper part of the adjusting channel and is close to the position of the chamfer surface. The larger the distance between the chamfer and the chamfer surface is, the smaller the resistance is, on the contrary, the smaller the distance between the chamfer and the chamfer surface is, the larger the resistance is, and in addition, the chamfer and the chamfer surface can be more easily attached to cut off the adjusting channel.

In a preferred embodiment: the lower part of the adjusting channel is a taper hole with a small upper part and a big lower part.

In a preferred embodiment: the bottom surface of the inner cavity of the shell is provided with a convex column, the convex column is sleeved at the bottom of the adjusting channel, and the connecting groove extends to the outer surface of the convex column.

In a preferred embodiment: the included angle between the oil passing hole and the pushing wing is 30-50 degrees.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic perspective view of the damper of the present invention.

FIG. 2 is an exploded perspective view of the damper of FIG. 1 showing the shaft and the blades.

Fig. 3 is a perspective view showing a housing of the damper shown in fig. 1.

Fig. 4 is a schematic sectional view (vertically cut along the line connecting two connecting grooves) of the damper shown in fig. 1.

Fig. 5 is a schematic sectional view of the damper shown in fig. 1 (cut in a transverse direction at the position of the oil passing hole when the oil passing passage is closed).

Fig. 6 is a schematic sectional view of the damper shown in fig. 1 (cut in a transverse direction at the position of the vane when the oil passing passage is closed).

FIG. 7 is a schematic cross-sectional view of the damper shown in FIG. 1 (a vertical cut along the line connecting the two vanes after the expanded root exits the oil return groove).

Fig. 8 is a schematic sectional view of the damper shown in fig. 1 (cut in a transverse direction at the position of the oil passing hole when the oil passing passage is opened).

Fig. 9 is a schematic sectional view of the damper shown in fig. 1 (cut in a transverse direction at the position of the vane when the oil passing passage is opened).

FIG. 10 is a schematic cross-sectional view of the damper shown in FIG. 1 (a vertical cut along the line connecting the two vanes after the root portion of the swelling enters the oil return groove).

Detailed Description

Referring to fig. 1 to 10, the damper includes a housing 10 having an open top, a rotating shaft 20, a pressing cover 30 and two blades 40, wherein two partitions 11 are symmetrically disposed on the inner peripheral wall of the housing 10, the rotating shaft 20 includes an insertion portion 21 extending into the inner cavity of the housing, an extension portion 22 exposed outside the housing, and a sealing portion 23 blocking the open top, and the pressing cover 30 is connected to the housing 10 and limits the sealing portion 23. Two pushing wings 211 are symmetrically arranged on the outer peripheral wall of the insertion portion 21, the two blades 40 are respectively movably sleeved on the two pushing wings 211, an openable and closable oil return channel 50 is formed between the blades and the pushing wings, and the oil return channel is opened when the rotating shaft rotates forwards (as shown in fig. 9) and is closed when the rotating shaft rotates backwards (as shown in fig. 6). The space between the inner peripheral wall of the housing 10 and the outer peripheral wall of the insertion portion 21 is divided into two high pressure chambers 60 and two low pressure chambers 70 by the partition 11, the vane 40 and the push wing 211. Two expanding root parts 212 are symmetrically arranged on the outer peripheral wall of the insertion part 21, and the expanding root parts 212 are connected between the bottom surface of the sealing part 23 and the top surface of the push wing 211.

The cross section of the blade 40 is U-shaped, and a notch is provided on the sidewall of one side, and a notch is also provided on the push wing 211. As shown in fig. 8 and 9, when the rotating shaft 20 rotates forward, the notched side wall of the vane abuts against the pushing wing 211, and the oil return passage 50 is formed by the gap between the vane and the pushing wing, so that oil in the low pressure chamber can rapidly enter the high pressure chamber through the oil return passage 50. As shown in fig. 5 and 6, when the rotating shaft 20 rotates reversely, the other side wall of the vane abuts against the pushing wing 211, the oil return passage 50 is blocked, and oil in the high-pressure chamber cannot directly enter the low-pressure chamber through the oil return passage 50, so that a damping effect is generated. The principle of the structure of the vanes, the thrust wings and the oil return channel refers to the prior art.

Preferably, the gland 30 and the housing 10 are both plastic parts. Further preferably, the gland is ultrasonically welded to the housing.

Preferably, an oil return groove 12 is formed in the inner peripheral wall of the housing 10 corresponding to the swelling root 212, the swelling root 212 gradually enters the oil return groove 12 along with the forward rotation of the rotating shaft, and the swelling root 212 gradually exits the oil return groove 12 along with the reverse rotation of the rotating shaft. When the root portion 212 is completely withdrawn from the oil return groove 12, the outer surface of the root portion 212 is attached to the inner circumferential surface of the housing 10. Therefore, it can be understood that the outer surface of the root portion 212 can slide along the inner peripheral wall of the housing 10 to prevent the oil in the high pressure chamber from directly entering the low pressure chamber when the damping effect is required, and prevent the oil in the high pressure chamber from directly entering the low pressure chamber at least in the latter half of the damping effect, so that the outer surface of the root portion 212 slides along the inner peripheral wall of the housing 10 at least in the latter half of the damping effect; if the process of accelerating oil return is performed when the oil return passage 50 is opened, the oil passage is allowed to flow rapidly through the outer surface of the swelling root portion 212 and the inner peripheral wall of the case, and the oil passage is allowed to flow rapidly through the outer surface of the swelling root portion 212 and the inner peripheral wall of the case at least in the latter half of the opening of the oil return passage 50, and therefore, the oil passage is allowed to flow rapidly through the outer surface of the swelling root portion 212 and the inner peripheral wall of the case at least in the latter half of the opening of the oil return passage 50.

Further preferably, the depth of the oil return groove 12 is gradually deepened along the direction of the positive rotation of the rotating shaft. Thus, when the oil return passage 50 is opened, the expanded root 212 gradually enters the oil return groove 12 along with the forward rotation of the rotating shaft 20, the oil in the low-pressure oil chamber can also flow into the high-pressure oil chamber through the oil return groove 12, and along with the rotation of the rotating shaft, the larger the depth of the oil return groove 12 is, the larger the oil passing amount of the oil return groove 12 is, and the working efficiency under the undamped state is improved.

Preferably, the vertical clamping ring 31 that faces downwards is arranged along the position in the lower surface of the gland 30, the lower part of the outer peripheral surface of the sealing part 23 is provided with a pressing shoulder 231, the inner peripheral wall of the open position of the shell is provided with a positioning step 13, the pressing shoulder 231 is supported on the positioning step 13, the clamping ring 31 is limited by the pressing shoulder 231, the gland 30 is close to the end surface of the shell 10, and the outer peripheral surface of the sealing part 23 is provided with a sealing ring between the clamping rings 31. Therefore, the rotating shaft can be very firmly restrained after the gland and the shell are ultrasonically welded together.

Preferably, the center of the rotating shaft 20 is provided with an adjusting passage 24 vertically penetrating through the rotating shaft, and the bottom surface of the inner cavity of the housing 10 is provided with two connecting grooves 14 communicating the high-pressure chamber 60 and the adjusting passage 24, the two connecting grooves corresponding to the two high-pressure chambers. The insertion portion 21 is provided with two oil passing holes 213, which are located near the seal portion 23 and communicate the low pressure chambers 70 with the regulating passage 24. The oil-passing speed adjusting device further comprises an adjusting rod 80 used for adjusting the oil-passing speed of the oil-passing hole 213, the adjusting rod 80 is screwed in from the top of the adjusting channel 24 and can move vertically, and the adjusting rod controls the oil outlet speed of the oil-passing hole in a mode of blocking the oil-passing hole or in a mode of filling and blocking the adjusting channel.

Preferably, the adjusting passage 24 is divided into an upper portion and a lower portion, the connecting position of the upper portion and the lower portion is transited by a chamfered surface 241 with a wide upper portion and a narrow lower portion, the edge of the lower end surface of the adjusting rod 80 is chamfered 81 corresponding to the chamfered surface 241, and the oil passing hole 213 is located at the upper portion of the adjusting passage 24 and near the chamfered surface 241. Therefore, the oil outlet speed of the oil hole can be conveniently controlled by controlling the distance between the chamfer surface 241 and the chamfer 81, so that the torque adjustment is more linear. In this embodiment, the adjusting rod is spirally connected with the adjusting channel.

Preferably, the lower portion of the regulating passage 24 is a tapered hole with a small top and a large bottom.

Preferably, the bottom surface of the inner cavity of the housing 10 is provided with a convex pillar 15, the bottom of the adjusting channel 24 is sleeved on the convex pillar 15, and the connecting groove 14 extends to the outer surface of the convex pillar 15.

Preferably, the included angle between the oil passing hole 213 and the pushing wing 211 is 30-50 degrees, and 40 degrees is adopted in this embodiment.

In specific implementation, the rotating shaft 20 is operated to rotate forward, the rotating shaft 20 pushes the blade 40 to move towards the low-pressure cavity 70, the oil return channel 50 is opened, oil in the low-pressure cavity 70 quickly enters the high-pressure oil cavity from the oil return channel 50, and after the expanded root 212 enters the oil return groove 12, oil in the low-pressure cavity 70 also quickly enters the high-pressure oil cavity from the oil return groove 12, so that the oil return efficiency in the undamped state is improved. When the rotating shaft 20 is operated to rotate reversely, the rotating shaft 20 pushes the blade 40 to move towards the high-pressure cavity 60, the oil return passage 50 is closed, and in the first half of the rotation of the rotating shaft, the expanded root 212 does not exit the oil return groove 12 yet, oil in the high-pressure cavity can enter the low-pressure cavity from the oil return groove 12, a slightly weak damping torque is brought, along with the gradual exit of the expanded root 212 from the oil return groove 12, the oil return groove 12 is shallower and shallower, the damping torque is larger and larger, once the expanded root 212 completely exits the oil return groove 12, the damping torque reaches the maximum, that is, in the second half of the reverse rotation of the rotating shaft, the maximum damping torque is obtained. In addition, when the rotating shaft 20 is in a reverse rotation state, oil in the high pressure chamber enters the lower portion of the adjusting passage 24 from the connecting groove 14, if the adjusting rod 80 does not completely close the oil passing hole 213, oil in the adjusting passage 24 also enters the low pressure chamber 70 from the oil passing hole 213, and the torque of the rotating shaft 20 can be controlled by operating the adjusting rod 80 to control the oil outlet speed of the oil passing hole 213.

The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited by this description, and all equivalent changes and modifications made within the scope and the specification of the present invention should be covered by the present invention.

Claims (10)

1. The attenuator, form uncovered open-ended casing, pivot, gland and two blades including the up end, central symmetry is equipped with two on the casing internal perisporium and separates the fender, the pivot is including stretching into the casing inner chamber insert the part, expose in the outside extension of casing and stop up uncovered open-ended seal part, the gland connect in the casing restricts seal part, central symmetry is equipped with two and pushes away the wing on the insert part periphery wall, two the blade movable sleeve is located two and pushes away on the wing respectively, form the oil return passageway of switch between blade and the push away the wing, the oil return passageway is in the pivot corotation is opened and is closed when the reversal, casing internal perisporium with the space of insert part periphery wall by separate keep off, blade and push away the wing and divide into two centrosymmetric high-pressure chambeies and two centrosymmetric low-pressure chambeies, the method is characterized in that: the central symmetry is equipped with two root portions that expand on the inserted part periphery wall, the root portion that expands connect in seal partial bottom surface with between the top surface of pushing away the wing, gland and casing all are the working of plastics.

2. The damper of claim 1, wherein: the gland is ultrasonically welded to the housing.

3. A damper as claimed in claim 1 or 2, wherein: the shell is characterized in that an oil return groove is formed in the inner peripheral wall of the shell corresponding to the swelling root, the swelling root gradually enters the oil return groove along with the forward rotation of the rotating shaft, and the swelling root gradually exits from the oil return groove along with the reverse rotation of the rotating shaft.

4. The damper of claim 3, wherein: the depth of the oil return groove is gradually deepened along the positive rotation direction of the rotating shaft.

5. A damper as claimed in claim 1 or 2, wherein: the utility model discloses a casing, including casing, gland, casing, clamping ring, casing end face, gland lower surface, the interior clamping ring that is equipped with vertical down along the position in the gland lower surface, the peripheral face lower part of sealing part is equipped with the pressure shoulder, be equipped with the location step on the internal perisporium that the casing opened mouthful position, the pressure shoulder supports on the location step, the clamping ring is restricted the pressure shoulder, the gland lean on in the casing end face, seal partial outer peripheral face with be equipped with the sealing washer between the clamping ring.

6. A damper as claimed in claim 1 or 2, wherein: the center of pivot is equipped with the vertical regulation passageway that runs through, the bottom surface of casing inner chamber is equipped with the intercommunication high-pressure chamber and the spread groove of adjusting the passageway, the inserted part is close to the position of sealing the part is equipped with the intercommunication the oilhole of crossing of low-pressure chamber and regulation passageway still including being used for adjusting the regulation pole of the oily speed of crossing of oilhole, adjust the top screw in of pole from adjusting the passageway.

7. The damper of claim 6, wherein: the adjusting channel is divided into an upper part and a lower part, the connecting position of the upper part and the lower part is transited by a chamfer surface with a wide upper part and a narrow lower part, the edge of the lower end surface of the adjusting rod is chamfered corresponding to the chamfer surface, and the oil passing hole is positioned at the upper part of the adjusting channel and is close to the position of the chamfer surface.

8. The damper of claim 7, wherein: the lower part of the adjusting channel is a taper hole with a small upper part and a big lower part.

9. The damper of claim 6, wherein: the bottom surface of the inner cavity of the shell is provided with a convex column, the convex column is sleeved at the bottom of the adjusting channel, and the connecting groove extends to the outer surface of the convex column.

10. The damper of claim 6, wherein: the included angle between the oil passing hole and the pushing wing is 30-50 degrees.

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