CN211115353U

CN211115353U - Damping mechanism

Info

Publication number: CN211115353U
Application number: CN201920936532.4U
Authority: CN
Inventors: 范振林; 谢伟泉
Original assignee: Xiamen R&T Plumbing Technology Co Ltd
Current assignee: Xiamen R&T Plumbing Technology Co Ltd
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2020-07-28
Anticipated expiration: 2029-06-20

Abstract

The utility model discloses a damping mechanism, including the casing that has the oil pocket, can be relative casing pivoted pivot and with pivot transmission complex case, the mobilizable dress of case axial is connect in the casing and will first cavity and second cavity are separated into along the axial to the oil pocket, still include the intercommunication the interface channel of first cavity and second cavity, wherein, the case is equipped with and opens or closes interface channel's elasticity portion works as when the case moves along the axial toward the first direction, elasticity portion opens interface channel works as when the case moves along the axial toward the second direction, elasticity portion expands and then closes under the oil pressure effect interface channel, and this scheme spare part is few, and the equipment is convenient, and is with low costs to simple structure, stable function are suitable for the popularization, and the practicality is strong.

Description

Damping mechanism

Technical Field

The utility model relates to a damping mechanism.

Background

With the improvement of living standard of people, the damping mechanism has the characteristics of impact resistance and low noise in daily life due to the fact that the damping mechanism can buffer, and therefore the damping mechanism is widely applied to toilet seat covers, door leaves and the like. The damping mechanisms in the existing market mostly realize the damping function through hydraulic pressure, namely a high-pressure oil cavity and a low-pressure oil cavity are formed in the damper in the opening process, and damping oil slowly permeates into the low-pressure oil cavity from the high-pressure oil cavity, so that the aim of slowly falling and muting is fulfilled.

The traditional damper generally comprises a shell which can be filled with damping oil and a rotating shaft which is in sealed rotating fit with the shell, wherein the rotating shaft is at least provided with an oil baffle plate which is attached to the inner wall of the shell and can flex the flowing of the damping oil, the inner wall of the shell is at least provided with a boss which can limit the rotating amplitude of the oil baffle plate, and the boss is hinged with a shifting piece which can be shifted by the damping oil or can be shifted by the damping oil and the shaft surface of the rotating shaft together; the plectrum is provided with a matching surface which is in abutting linkage with the axial surface of the rotating shaft, and an oil passage which changes the damping oil hydraulic resistance through the swinging and the rotation of the plectrum is arranged between the matching surface and the axial surface of the rotating shaft. When the rotating shaft rotates towards one direction, the poking sheet seals the damping oil channel to form a slow-falling effect of the cover plate, and when the rotating shaft rotates towards the other direction, the poking sheet does not seal the damping oil channel to form a quick-falling effect of the cover plate. However, the processing technology of the traditional damper is relatively complex, and the precision requirement is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a damping mechanism for solve the above problem.

In order to achieve the above object, the utility model adopts the following technical scheme: a damping mechanism comprises a shell with an oil cavity, a rotating shaft capable of rotating relative to the shell, a valve core in transmission fit with the rotating shaft, and a connecting channel communicated with the first cavity and the second cavity, wherein the valve core is axially movably connected in the shell and divides the oil cavity into the first cavity and the second cavity along the axial direction, the valve core is provided with an elastic part for opening or closing the connecting channel, when the valve core moves along the axial direction to the first direction, the elastic part opens the connecting channel, and when the valve core moves along the axial direction to the second direction, the elastic part expands under the action of oil pressure to close the connecting channel.

Preferably, the rotating shaft drives the valve core to move axially in the first direction when rotating forwards, and drives the valve core to move axially in the second direction when rotating backwards; or, when the rotating shaft rotates forwards, the valve core is driven to move towards one of the first direction and the second direction along the axial direction, and when the rotating shaft rotates backwards, the valve core moves towards the other of the first direction and the second direction under the action of elastic force of an elastic piece.

Preferably, the valve core is circumferentially limited in the housing relative to the housing, and the rotating shaft is in threaded fit with the valve core, or the rotating shaft is in transmission fit with the valve core through a cam structure.

Preferably, a gap between the valve element and the rotating shaft forms the connecting passage.

Preferably, the elastic part is sleeved outside the rotating shaft, and a gap between the elastic part and the peripheral wall of the rotating shaft forms the connecting channel.

Preferably, the valve further comprises an adjusting piece movably attached to the housing and matched with the rotating shaft to form an adjusting passage communicating the first chamber and the second chamber, the flow cross-sectional area of the adjusting passage is adjusted by moving the adjusting piece, and the gap between the valve core and the adjusting piece forms the connecting passage.

Preferably, the elastic part is sleeved outside the adjusting part, a gap between the elastic part and the outer peripheral wall of the adjusting part forms the connecting channel, the adjusting part is sleeved outside the rotating shaft, and a gap between the inner peripheral wall of the adjusting part and the outer peripheral wall of the rotating shaft forms the adjusting channel.

Preferably, the adjusting member is axially movably attached in the housing, the adjusting member has a gradually changing inner diameter in the axial direction, and/or the rotating shaft has a gradually changing outer diameter in the axial direction, and the size of the gap between the inner peripheral wall of the adjusting member and the outer peripheral wall of the rotating shaft is changed by axially driving the adjusting member.

Preferably, the valve core comprises a valve sleeve and a nut, the valve sleeve is provided with an accommodating cavity, the nut is fixedly installed in the accommodating cavity, the elastic part is arranged on the valve sleeve, the rotating shaft comprises a threaded section, and the nut is in threaded transmission fit with the threaded section.

Preferably, the elastic part is arranged at one end of the valve sleeve and is provided with a through hole communicated with the accommodating cavity, the other end of the valve sleeve is provided with a yielding hole communicated with the accommodating cavity, and the through hole and the yielding hole supply the rotating shaft to penetrate through.

The utility model has the advantages that:

the utility model discloses a damping mechanism, including the casing that has the oil pocket, can be relative casing pivoted pivot and with pivot transmission complex case, the mobilizable dress of case axial is connect in the casing and will first cavity and second cavity are separated into along the axial to the oil pocket, still include the intercommunication the interface channel of first cavity and second cavity, wherein, the case is equipped with and opens or closes interface channel's elasticity portion works as when the case moves along the axial toward the first direction, elasticity portion opens interface channel works as when the case moves along the axial toward the second direction, elasticity portion expands and then closes under the oil pressure effect interface channel, this scheme spare part is few, and the equipment is convenient, and is with low costs to simple structure, stable function are suitable for the popularization, and the practicality is strong.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a perspective view of a damping mechanism of the present invention;

fig. 2 is a cross-sectional view of a damping mechanism of the present invention;

fig. 3 is an exploded view of a damping mechanism of the present invention;

fig. 4 is a perspective view of a valve element of a damping mechanism of the present invention;

fig. 5 is a perspective view of a valve sleeve of a damping mechanism of the present invention;

fig. 6 is a perspective view of a nut of a damping mechanism of the present invention;

fig. 7 is an assembly view of an adjusting member and a rotating shaft of a damping mechanism according to the present invention;

fig. 8 is an assembly view of the valve core, the rotating shaft and the adjusting member of the damping mechanism of the present invention;

fig. 9 is a sectional view showing an opened state of a connection passage of a damping mechanism according to the present invention;

fig. 10 is a cross-sectional view showing a closed state of a connection passage of a damping mechanism according to the present invention;

fig. 11 is a sectional view showing an open state of an adjustment passage of a damping mechanism according to the present invention;

fig. 12 is a sectional view showing a closed state of an adjustment passage of a damping mechanism according to the present invention.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 to 12, a damping mechanism includes a housing 10 having an oil chamber, a rotating shaft 20 capable of rotating relative to the housing 10, and a valve core 30 in transmission fit with the rotating shaft 20, wherein the valve core 30 is axially movably mounted in the housing 10 and divides the oil chamber into a first chamber 11 and a second chamber 12 along an axial direction, and further includes a connecting passage a communicating the first chamber 11 and the second chamber 12, wherein the valve core 30 is provided with an elastic portion 311 for opening or closing the connecting passage a, when the valve core 30 moves in the first direction along the axial direction, the elastic portion 311 opens the connecting passage a, and when the valve core 30 moves in the second direction along the axial direction, the elastic portion 311 expands under the action of oil pressure to close the connecting passage a.

In this embodiment, the normal rotation of the rotating shaft 20 drives the valve element 30 to move along the axial direction in the first direction, and the reverse rotation of the rotating shaft 20 drives the valve element 30 to move along the axial direction in the second direction.

In other embodiments, when the rotating shaft 20 rotates forward, the valve element 30 is driven to move axially in one of the first direction and the second direction, and when the rotating shaft 20 rotates backward, the valve element 30 moves in the other of the first direction and the second direction under the elastic force of an elastic member.

In this embodiment, the valve core 30 is circumferentially limited in the housing 10 relative to the housing 10, and the rotating shaft 20 is in threaded engagement with the valve core 30.

In other embodiments, the shaft 20 and the valve core 30 are in driving fit through a cam structure.

In this embodiment, the valve further includes an adjusting member 40, the adjusting member 40 is movably attached to the housing 10 and is matched with the rotating shaft 20 to form an adjusting passage B communicating the first chamber 11 and the second chamber 12, the flow cross-sectional area of the adjusting passage B is adjusted by moving the adjusting member 40, a gap between the valve core 30 and the adjusting member 40 forms the connecting passage a, specifically, a movable adjusting nut 50 is disposed on the housing 10, the adjusting nut 50 is in transmission fit with the adjusting member 40, and the adjusting member 40 is driven to move by adjusting the adjusting nut 50.

In this embodiment, the elastic portion 311 is sleeved outside the adjusting member 40, the connection channel a is formed by a gap between the elastic portion 311 and the outer peripheral wall of the adjusting member 40, the adjusting member 40 is sleeved outside the rotating shaft 20, and the adjustment channel B is formed by a gap between the inner peripheral wall of the adjusting member 40 and the outer peripheral wall of the rotating shaft 20.

In this embodiment, the adjusting member 40 is axially movably attached to the housing 10, the rotating shaft 20 has a gradually changing outer diameter along the axial direction, specifically, the adjusting member 40 is a sleeve, an oil passing hole 41 communicating an inner cavity of the sleeve with the first chamber 11 is formed in a peripheral wall of the adjusting member 40, the rotating shaft 20 has a small diameter section 21, the adjusting member 40 is sleeved outside the small diameter section 21, and the small diameter section 21 has a gradually changing tapered inclined surface 211, so that the flow cross-sectional area of the adjusting passage B is adjusted by the adjusting member 40 moving relative to the tapered inclined surface 211.

In other embodiments, the adjusting member 40 has a gradually changing inner diameter along the axial direction, and the size of the gap between the inner peripheral wall of the adjusting member 40 and the outer peripheral wall of the rotating shaft 20 is changed by driving the adjusting member 40 axially.

In other embodiments, the connection channel a is formed by a gap between the valve element 30 and the rotating shaft 20, further, the elastic portion 311 is sleeved outside the rotating shaft 20, and the connection channel a is formed by a gap between the elastic portion 311 and the outer peripheral wall of the rotating shaft 20.

In this embodiment, the valve core 30 includes a valve sleeve 31 and a nut 32, the valve sleeve 31 is provided with a receiving cavity 312, the nut 32 is fixedly attached in the receiving cavity 312, and the elastic portion 311 is disposed on the valve sleeve 31.

In this embodiment, the elastic portion 311 is disposed at one end of the valve sleeve 31 and is provided with a through hole 311a communicated with the accommodating cavity 312, the other end of the valve sleeve 31 is provided with a yielding hole 313 communicated with the accommodating cavity 312, and the through hole 311a and the yielding hole 313 are provided for the rotating shaft 20 to pass through.

In this embodiment, the rotating shaft 20 includes a threaded section 22, the nut 32 is in threaded transmission fit with the threaded section 22, specifically, the through hole 311a and the relief hole 313 are provided for the rotating shaft 20 to pass through, so that the nut 32 is engaged with the threaded section 22, and the adjusting member 40 is sleeved on the rotating shaft 20 through the through hole 311a, and further includes a gland 60, and the gland 60 is in sealing connection with the opening portion of the housing 10.

The specific working process of this embodiment is as follows:

as shown in fig. 9, when the rotating shaft 20 rotates in a first circumferential direction, for example, in a forward direction (clockwise rotation), the threaded section 22 of the rotating shaft 20 cooperates with the nut 32 to drive the valve core 30 to move in a first axial direction (for example, axially outward), and at this time, the elastic portion 311 opens the connecting passage a, and the oil in the second chamber 12 rapidly flows to the first chamber 11; as shown in fig. 10, when the rotating shaft 20 rotates in the second circumferential direction, for example, in a reverse direction (counterclockwise rotation), the threaded section 22 of the rotating shaft 20 cooperates with the nut 32 to drive the valve core 30 to move in the second axial direction (for example, axially inward movement), at this time, the elastic portion 311 closes the connecting passage a, and the oil in the first chamber 11 slowly flows to the second chamber 12, so as to achieve a damping effect.

As shown in fig. 11, by adjusting the adjusting nut 50, the adjusting nut 50 is far away from the adjusting member 40, and then the adjusting member 40 moves away from the rotating shaft 20 under the action of oil pressure, so that the through-flow cross-sectional area of the adjusting passage B is increased; as shown in fig. 12, by adjusting the adjusting nut 50, the adjusting member 40 is moved by the adjusting nut 50 toward the rotating shaft 20, so that the cross-sectional area of the adjusting passage B is reduced.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. The damping mechanism is characterized by comprising a shell with an oil cavity, a rotating shaft capable of rotating relative to the shell, a valve core in transmission fit with the rotating shaft, wherein the valve core is axially movably connected in the shell and divides the oil cavity into a first cavity and a second cavity along the axial direction, the damping mechanism further comprises a connecting channel communicated with the first cavity and the second cavity, the valve core is provided with an elastic part for opening or closing the connecting channel, when the valve core moves towards the first direction along the axial direction, the elastic part opens the connecting channel, and when the valve core moves towards the second direction along the axial direction, the elastic part expands under the action of oil pressure to close the connecting channel.

2. The damping mechanism of claim 1, wherein the spool is driven by the rotating shaft in a forward direction to move axially in the first direction, and the spool is driven by the rotating shaft in a reverse direction to move axially in the second direction; or, when the rotating shaft rotates forwards, the valve core is driven to move towards one of the first direction and the second direction along the axial direction, and when the rotating shaft rotates backwards, the valve core moves towards the other of the first direction and the second direction under the action of elastic force of an elastic piece.

3. The damping mechanism of claim 1, wherein the valve element is disposed in the housing in a circumferentially limited manner with respect to the housing, and the rotating shaft is in threaded engagement with the valve element, or the rotating shaft is in driving engagement with the valve element through a cam structure.

4. A damping mechanism according to claim 1, wherein a gap between said spool and said rotary shaft forms said connecting passage.

5. The damper mechanism according to claim 4, wherein the elastic portion is fitted around the shaft, and a gap between the elastic portion and an outer peripheral wall of the shaft forms the connection passage.

6. A damping mechanism according to claim 1, further comprising an adjustment member movably attached to said housing and cooperating with said rotatable shaft to define an adjustment passage communicating between said first and second chambers, wherein the gap between said spool and said adjustment member defines said communication passage by moving said adjustment member to adjust the cross-sectional flow area of said adjustment passage.

7. The damper mechanism according to claim 6, wherein the elastic portion is fitted around the outside of the adjuster, and a gap between the elastic portion and an outer peripheral wall of the adjuster forms the connection passage, and wherein the adjuster is fitted around the outside of the rotary shaft, and a gap between an inner peripheral wall of the adjuster and an outer peripheral wall of the rotary shaft forms the adjustment passage.

8. A damping mechanism according to claim 6, characterized in that the adjusting member is axially movably attached in the housing, the adjusting member having a gradually changing inner diameter in the axial direction, and/or the rotary shaft having a gradually changing outer diameter in the axial direction, the adjusting member being driven in the axial direction to change the size of the gap between the inner peripheral wall of the adjusting member and the outer peripheral wall of the rotary shaft.

9. The damper mechanism of claim 1, wherein the valve cartridge includes a valve housing and a nut, the valve housing defining a receiving cavity, the nut fixedly attached within the receiving cavity, the resilient portion disposed on the valve housing, the shaft including a threaded section, the nut in threaded engagement with the threaded section.

10. The damping mechanism as claimed in claim 9, wherein the resilient portion is disposed at one end of the valve housing and has a through hole communicating with the accommodating chamber, and the other end of the valve housing has a relief hole communicating with the accommodating chamber, and the through hole and the relief hole are for the shaft to pass through.