CN210217460U

CN210217460U - Bidirectional rotary damper and washing machine

Info

Publication number: CN210217460U
Application number: CN201920521890.9U
Authority: CN
Inventors: Zhongbing Li; 李中兵
Original assignee: Shanghai Junyi Industry Co Ltd
Current assignee: Shanghai Junyi Industry Co Ltd
Priority date: 2019-04-17
Filing date: 2019-04-17
Publication date: 2020-03-31
Anticipated expiration: 2029-04-17

Abstract

The utility model discloses a bidirectional rotary damper and washing machine, including the attenuator shell, the rotor shaft of rotatable coaxial bearing in the attenuator shell, the attenuator shell is installed on the fixing base, the rotor shaft includes main rotor shaft and follow rotor shaft, main rotor shaft is connected with rotary part, follow rotor shaft holds in the attenuator shell, be equipped with first rotor blade and second rotor blade at the indoor rotation of liquid on the follow rotor shaft, be equipped with on the axial plane of follow rotor shaft and use first rotor blade and second rotor blade as the initial position along circumference sectional area diminishing gradually first oil flow channel and second oil flow channel, when the rotor shaft rotates in the attenuator shell, through the flow change of viscous fluid and the rotational resistance of rotor shaft changes, let follow rotor shaft slow descending process more smooth, avoid the impact to the blade, simultaneously through the coaxial center design of rotor shaft and attenuator shell, the uniform stress of the rotor shaft can be ensured, the abrasion between the shaft and the shell is reduced, and the service life is prolonged.

Description

Bidirectional rotary damper and washing machine

Technical Field

The utility model belongs to the technical field of the attenuator design, especially, relate to a two-way rotatory attenuator and washing machine.

Background

At present, a plurality of containers or door cabinets are closed by adopting cover type, particularly in the industry of washing machines, most of the existing washing machines are provided with glass door covers, the glass door covers are heavier than the door covers of the existing washing machines, and if the glass door covers fall down by directly depending on the gravity of the glass door covers, the washing machines can be damaged, so that the door covers generally use a pair of rotary dampers which are respectively arranged at the left side and the right side of the door covers to slowly fall down. However, the existing rotary damper adopts the eccentric design of a rotor shaft and a shell to realize damping, and the shaft and the shell rotate eccentrically, so that the shaft is stressed unevenly, and the shaft and the shell are easily abraded.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a two-way rotatory attenuator and washing machine can guarantee the even atress of rotor shaft, reduces the wearing and tearing of axle and shell, increase of service life.

In order to solve the above problem, the technical scheme of the utility model is that:

a bi-directional rotary damper comprising:

the damper comprises a damper shell, a first baffle plate and a second baffle plate, wherein the damper shell comprises a liquid chamber filled with viscous fluid, the inner wall of the damper shell is symmetrically provided with the first baffle plate and the second baffle plate, the liquid chamber is divided into the first liquid chamber and the second liquid chamber, and the damper shell is arranged on a fixed seat;

a rotor shaft rotatably supported coaxially within the damper housing, the rotor shaft including a master rotor shaft and a slave rotor shaft;

one end of the main rotor shaft protrudes to the outside of the damper shell and is used for being connected with a rotating component;

the secondary rotor shaft is accommodated in the liquid chamber, the secondary rotor shaft is provided with a first rotor blade, the secondary rotor shaft is provided with a second rotor blade at a position symmetrical to the first rotor blade, the first rotor blade is rotatably accommodated in the first liquid chamber, the second rotor blade is rotatably accommodated in the second liquid chamber, the first rotor blade is provided with a first oil passing passage, the second rotor blade is provided with a second oil passing passage, the first oil passing passage is closed when the first rotor blade rotates toward the first partition, the first oil passing passage is communicated when the first rotor blade rotates away from the first partition, the second oil passing passage is closed when the second rotor blade rotates toward the second partition, and the second rotor blade rotates away from the second partition, the second oil passing channel is in a communicated state,

the secondary rotor shaft is provided with a first oil passing flow channel taking the first rotor blade as an initial position and a second oil passing flow channel taking the second rotor blade as an initial position, the first oil passing flow channel and the second oil passing flow channel are respectively positioned on the same side of the first rotor blade and the second rotor blade, and the sectional areas of the first oil passing flow channel and the second oil passing flow channel are gradually reduced along the same direction to change the flow of the viscous fluid.

Preferably, the first rotor blade includes a first baffle and a first blade, the first baffle is disposed on the slave rotor shaft, the first baffle is provided with at least one first oil passing groove, the first blade is a U-shaped groove with an open bottom, the first blade is mounted on the first baffle with the open bottom facing downward, the width of the open bottom of the first blade is greater than the thickness of the first baffle, the first blade is movable in the circumferential direction relative to the first baffle, the length of the first blade and the length of the first baffle are both equal to the length of the slave rotor shaft, the top surface of the first blade is arc-shaped and contacts with the inner wall of the damper housing, and a first through hole is disposed on one side of the first blade away from the first partition;

the second rotor blade comprises a second baffle and a second blade, the second baffle is arranged at a position on the secondary rotor shaft, which is symmetrical to the first baffle, at least one second oil passing groove is formed in the second baffle, the second blade is a U-shaped groove with an opening at the bottom surface, the opening of the second blade is downwards arranged on the second baffle, the width of the opening at the bottom surface of the second blade is larger than the thickness of the second baffle, the second blade can move along the circumferential direction relative to the second baffle, the length of the second blade and the length of the second baffle are both consistent with the length of the secondary rotor shaft, the top surface of the second blade is arc-shaped and is in contact with the inner wall of the damper shell, and a through second opening hole is formed in one side, away from the second partition, of the second blade;

work as first rotor blade orientation when first baffle is rotatory, first baffle with first blade is not equipped with the one side laminating of first trompil, first cross the oil passageway and be the closure state, work as first rotor blade keeps away from when first baffle is rotatory, first baffle with first blade is equipped with the one side laminating of first trompil, first cross the oil passageway and be the connected state, work as second rotor blade orientation when the second baffle is rotatory, the second baffle with the second blade is not equipped with the one side laminating of second trompil, the oil passageway is crossed to the second and is the closure state, works as second rotor blade keeps away from when the second baffle is rotatory, the second baffle with the second blade is equipped with the one side laminating of second trompil, the oil passageway is crossed to the second is the connected state.

Preferably, the first baffle and the second baffle are both provided with two oil grooves.

Preferably, a detachable end cover is arranged at one end, close to the main rotor shaft, of the damper shell, and the end cover is in sealing fit with the damper shell.

Preferably, an annular flange portion protruding in the radial direction is formed at the middle of the rotor shaft, and the end cap is nested on the outer circumferential surface of the flange portion to be in sealing fit with the damper housing.

Preferably, a seal ring groove is arranged in the middle of the flange part.

Preferably, the viscous fluid is silicone oil.

Preferably, the damper housing is detachably inserted into the fixing seat.

Preferably, one end of the damper shell, which is far away from the main rotor shaft, is provided with an insertion part, and a plurality of slots are arranged in the insertion part.

Based on the same concept, a washing machine includes the above-mentioned bidirectional rotary damper.

The utility model discloses owing to adopt above technical scheme, make it compare with prior art and have following advantage and positive effect:

1) the utility model provides a bidirectional rotary damper, including the attenuator shell, the rotatable coaxial rotor shaft that supports in the attenuator shell, the attenuator shell is installed on the fixing base, the rotor shaft includes main rotor shaft and follow rotor shaft, main rotor shaft is connected with rotary part, follow rotor shaft holds in the attenuator shell, be equipped with first rotor blade and the second rotor blade of rotatory in the liquid chamber from the rotor shaft, be equipped with on the axial plane of follow rotor shaft and use first rotor blade and second rotor blade as the initial position along circumference sectional area diminishing gradually first oil flow channel and second oil flow channel, when the rotor shaft rotates in the attenuator shell, through the flow change of viscous fluid and change the rotational resistance of rotor shaft, let follow rotor shaft descent process more smooth, avoid the impact to the blade, simultaneously through the coaxial core design of rotor shaft and attenuator shell, the uniform stress of the rotor shaft can be ensured, the abrasion between the shaft and the shell is reduced, and the service life is prolonged.

2) The utility model provides a pair of two-way rotary damper, all be equipped with two on its first baffle and the second baffle and cross the oil groove, through increaseing oily cross-section, when the washing machine upper cover was opened, the oily volume of crossing of first oily passageway and second oily passageway increases, reduces reverse rotation's resistance, and the comfort level is uncovered to the reinforcing apron.

Drawings

FIG. 1 is an overall schematic view of a bi-directional rotary damper;

FIG. 2 is a cross-sectional view of the rotor shaft and damper housing of FIG. 1;

FIG. 3 is a schematic view of a rotor shaft of a bi-directional rotational damper;

FIG. 4 is a schematic view of a first rotor blade and a second rotor blade;

FIG. 5 is a schematic view of a first blade and a second blade;

FIGS. 6A to 6C are schematic views of the forward rotation of the bi-directional rotary damper;

FIG. 7 is a schematic view of the reverse rotation of the bi-directional rotary damper;

fig. 8 is a schematic view of a bi-directional rotary damper assembly.

Description of reference numerals:

1: a damper housing; 11: a first separator; 12: a second separator; 13: a first liquid chamber; 14: a second liquid chamber; 15: an end cap; 16: a plug-in part; 2: a rotor shaft; 21: a main rotor shaft; 22: a slave rotor shaft; 221: a first rotor blade; 2211: a first baffle plate; 2212: a first blade; 222: a second rotor blade; 2221: a second baffle; 2222: a second blade; 223: a first oil passing flow passage; 224: a second oil passing flow passage; 23: a flange portion; 231: a seal ring groove; 232: and (5) sealing rings.

Detailed Description

The following describes the bidirectional rotary damper and the washing machine in further detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims.

Example one

Referring to fig. 1, the present invention provides a bidirectional rotary damper, which includes a damper housing 1 and a rotor shaft 2, wherein the damper housing 1 includes a liquid chamber filled with viscous fluid, as shown in fig. 2, a first partition 11 and a second partition 12 are symmetrically disposed on an inner wall of the damper housing 1, the liquid chamber is divided into a first liquid chamber 13 and a second liquid chamber 14, and the damper housing 1 is mounted on a fixing base;

a rotor shaft 2, the rotor shaft 2 being rotatably supported coaxially within the damper housing 1, fig. 3 being a schematic view of the rotor shaft of the bi-directional rotary damper, with reference to fig. 3, the rotor shaft 2 including a master rotor shaft 21 and a slave rotor shaft 22; one end of the main rotor shaft 21 protrudes to the outside of the damper housing 1 and is connected to the rotating member; a first rotor blade 221 is provided from the rotor shaft 22 and is accommodated in the liquid chamber, a second rotor blade 222 is provided from the rotor shaft 22 at a position symmetrical to the first rotor blade 221, the first rotor blade 221 is rotatably accommodated in the first liquid chamber 13, the second rotor blade 222 is rotatably accommodated in the second liquid chamber 14, the first rotor blade 221 is provided with a first oil passing passage, the second rotor blade 222 is provided with a second oil passing passage, the first oil passing passage is closed when the first rotor blade 221 rotates toward the first partition plate 11, the first oil passing passage is communicated when the first rotor blade 221 rotates away from the first partition plate 11, the second oil passing passage is closed when the second rotor blade 222 rotates toward the second partition plate 12, the second oil passing passage is communicated when the second rotor blade 222 rotates away from the second partition plate 12,

a first oil passing flow passage 223 using the first rotor blade 221 as a start position and a second oil passing flow passage 224 using the second rotor blade 222 as a start position are provided on the 22 axial surface of the rotor shaft, the first oil passing flow passage 223 and the second oil passing flow passage 224 are respectively located on the same side of the first rotor blade 221 and the second rotor blade 222, the cross-sectional areas of the first oil passing flow passage 223 and the second oil passing flow passage 224 are gradually reduced along the same direction, and the flow change of the viscous fluid is changed to further change the rotation resistance of the rotor shaft 2.

The utility model provides a two-way rotary damper, including damper shell 1, the rotor shaft 2 of rotatable coaxial bearing in damper shell 1, damper shell 1 installs on the fixing base, rotor shaft 2 includes main rotor shaft 21 and from rotor shaft 22, main rotor shaft 21 is connected with rotary part, from rotor shaft 22 holds in damper shell, be equipped with first rotor blade 221 and second rotor blade 222 of rotating in the liquid chamber on the follow rotor shaft 22, be equipped with on the axial plane of follow rotor shaft 22 and use first rotor blade 221 and second rotor blade 222 as the initial position along the first oil flow passage 223 and the second oil flow passage 224 that the circumference sectional area diminishes gradually, when the washing machine lid closes downwards, drive main rotor shaft 21 and rotate, main rotor shaft 21 drives from rotor shaft 22 and is rotary motion in damper shell 1, namely first baffle 11 and the second baffle 12 in damper shell 1 move for the axial plane of follow rotor shaft 22, because the sectional area of first oily runner 223 of crossing and second crossing oily runner 224 diminishes gradually, viscous fluid's flow diminishes gradually, the relative damper shell 1 rotational resistance grow of rotor shaft 2 to realize that rotor shaft 2 slowly falls the process more in the same direction as smooth, avoid the impact to the blade, the utility model discloses well rotor shaft 2 and damper shell 1 are with the axle center design, can guarantee the even atress of rotor shaft, reduce the wearing and tearing of axle and shell, increase of service life.

Damper shell 1 contains the liquid chamber that has sealed in viscous fluid, in the utility model discloses, viscous fluid is silicon oil, refer to fig. 2 and show, be equipped with first baffle 11 and second baffle 12 on damper shell 1's the inner wall symmetrically, first baffle 11 and second baffle 12 all with from rotor shaft 22's axial plane contact connection, divide the liquid chamber into first liquid chamber 13 and second liquid chamber 14, damper shell 1 installs on the fixing base, damper shell 1's material can be PBT plastics.

The rotor shaft 2 is rotatably and coaxially supported in the damper shell 1, and the material of the rotor shaft can be environment-friendly zinc alloy. Referring to fig. 3, the rotor shaft 2 includes a master rotor shaft 21 and a slave rotor shaft 22; the main rotor shaft 21 protrudes to the outside of the damper housing 1 and is connected with the upper cover of the washing machine; a first rotor blade 221 and a second rotor blade 222 are symmetrically and radially protruded from the rotor shaft 22, the first rotor blade 221 is rotatably accommodated in the first liquid chamber 13, the second rotor blade 222 is rotatably accommodated in the second liquid chamber 14, the silicone oil is stirred to flow in the liquid chambers, the first rotor blade 221 is provided with a first oil passing passage, the second rotor blade 222 is provided with a second oil passing passage, when the first rotor blade 221 rotates toward the first partition 11, the first oil passing passage is in a closed state, when the first rotor blade 221 rotates away from the first partition 11, the first oil passing passage is in a communicating state, when the second rotor blade 222 rotates toward the second barrier 12, the second oil passing passage is in a closed state, when the second rotor blade 222 rotates away from the second partition 12, the second oil passing passage is in a communicating state. Namely, when the upper cover of the washing machine needs to be closed, the first oil passing channel and the second oil passing channel are both in a closed state, silicon oil flows between the first partition plate 11 and the axial surface of the slave rotor shaft 22 and between the second partition plate and the axial surface of the slave rotor shaft 22, when the upper cover of the washing machine needs to be opened, the first oil passing channel and the second oil passing channel are both in a communicated state, the silicon oil can flow through the first oil passing channel and the second oil passing channel, the upper cover of the washing machine is opened, and through the design of the first oil passing channel and the second oil passing channel, the opening and closing bidirectional rotation of the upper cover of the washing machine can be realized.

In this embodiment, referring to fig. 2, the first rotor blade 221 includes a first baffle 2211 and a first blade 2212, the first baffle 2211 is disposed on the rotor shaft 22 in a protruding manner in a radial direction, referring to fig. 4 and 5, fig. 4 is a schematic view of the first rotor blade or the second rotor blade, referring to fig. 5, fig. 5 is a schematic view of the first blade and the second blade, the first rotor blade 221 includes a first baffle 2211 and a first blade 2212, the first baffle 2211 is disposed on the rotor shaft 22, the first baffle 2211 is opened with at least one first oil passing groove, the first blade 2212 is a U-shaped groove with an opening at the bottom, the first blade 2212 is mounted on the first baffle 2211 with the opening facing downward, the opening at the bottom of the first blade 2212 is wider than the thickness of the first baffle 2211, the first blade 2212 is movable in a circumferential direction relative to the first baffle 2211, the length of the first blade 2212 and the length of the first blade 2211 are both consistent with the length of the baffle 22122, the top surface of the first blade 2212 is arc-shaped and is in contact with the inner wall of the damper shell 1, and a first through hole is formed in one side, away from the first partition plate 11, of the first blade 2212; the second rotor blade 222 includes a second baffle 2221 and a second blade 2222, the second baffle 2221 is disposed at a position on the rotor shaft 22 that is symmetrical to the first baffle 2211, at least one second oil groove is formed in the second baffle 2221, the second blade 2222 is a U-shaped groove with an open bottom, the open bottom of the second blade 2222 is downward mounted on the second baffle 2221, the width of the open bottom of the second blade 2222 is greater than the thickness of the second baffle 2221, the second blade 2222 is movable in the circumferential direction relative to the second baffle 2221, the length of the second blade 2222 and the length of the second baffle 2222221 are both equal to the length of the rotor shaft 22, the top surface of the second blade 2222 is arc-shaped and contacts with the inner wall of the damper housing 1, and a through second opening is disposed on a side of the second blade 2222 away from the second baffle 12;

referring to fig. 6A to 6C, fig. 6A to 6C are schematic forward rotation diagrams of the bidirectional rotary damper, when the upper cover of the washing machine needs to be closed, that is, the upper cover rotates clockwise from the rotor shaft 22, an arrow on the rotor shaft 22 in the drawing is a rotation direction from the rotor shaft 22, an arrow on the first partition 11 is a flow direction of the silicone oil, and the first baffle 2211 and the second baffle 2221 are both tightly attached to the non-perforated sides of the first blade 2212 and the second blade 2222, so that the first oil passing channel and the second oil passing channel are both in a closed state; when the upper cover of the washing machine needs to be opened, referring to fig. 7, in the drawing, an arrow on the rotor shaft 22 is a rotation direction from the rotor shaft 22, an arrow on the first rotor blade 221 is a flow direction of the silicon oil, and fig. 7 is a schematic diagram of reverse rotation of the bidirectional rotary damper, that is, when the rotor shaft 22 rotates counterclockwise, the first baffle 2211 and the second baffle 2221 are both tightly attached to one side of the openings of the first blade 2212 and the second blade 2222, at this time, the oil passing grooves on the first baffle 2211 and the second baffle 2221 are matched with the openings of the first blade 2212 and the second blade 2222, and the first oil passing channel and the second oil passing channel are both in a communicated state, so that bidirectional rotation of opening and closing of the upper cover of the washing machine can be realized. In this embodiment, all be equipped with two oil grooves on first baffle 2211 and the second baffle 2221, through increaseing oily cross-section, when the washing machine upper cover was opened, the oily volume increase of first oily passageway of mistake and the oily passageway of second mistake reduces counter-rotation's resistance, and the reinforcing apron is uncovered the comfort level.

Referring to fig. 3, a first oil passing flow passage 223 starting from the first baffle 2211 and a second oil passing flow passage 224 starting from the second baffle 2221 are provided on the axial surface of the rotor shaft 22, the first oil passing flow passage 223 and the second oil passing flow passage 224 are respectively located on the same side of the first baffle 2211 and the second baffle 2221, the cross-sectional areas of the first oil passing flow passage 223 and the second oil passing flow passage 224 are gradually reduced along the same direction, and the flow rate change of the viscous fluid is changed to change the rotation resistance of the rotor shaft 2. Referring to fig. 6, fig. 6 is a schematic forward rotation diagram of the bidirectional rotary damper, that is, when the upper cover of the washing machine is closed, the main rotor shaft 22 rotates clockwise, at this time, the first oil passing channel and the second oil passing channel are both in a closed state, silicone oil can only flow through the first oil passing channel 223 and the second oil passing channel 224, the cross sections of the first oil passing channel 223 and the second oil passing channel 224 are gradually reduced, the flow rate of the viscous fluid is gradually reduced, and the rotation resistance of the rotor shaft 2 relative to the damper housing 1 is increased, so that the slow descending process of the rotor shaft 2 is smoother, the impact on the blades is avoided, and the upper cover of the washing machine is flexibly closed.

Referring to fig. 8, fig. 8 is a schematic view of assembling a bidirectional rotary damper, in this embodiment, a damper housing 1 is provided with a detachable end cover 15 near one end of a main rotor shaft 21, the end cover 15 is in sealing fit with the damper housing to form a liquid chamber for enclosing viscous fluid, and the material of the end cover 15 may be PBT. In the present embodiment, the rotor shaft 2 has an annular flange 23 formed at its center portion and projecting in the radial direction, and the end cap 15 is fitted over the outer circumferential surface of the flange 23 to be sealingly engaged with the damper housing 1. Preferably, a sealing ring groove 231 is formed in the middle of the flange portion 23 for placing a sealing ring to ensure the sealing engagement of the end cap 15 with the damper housing 1 and prevent the leakage of silicone oil.

In this embodiment, the damper housing 1 is detachably inserted into the fixing base. One end of the damper shell 1, which is far away from the main rotor shaft 21, is provided with an insertion part 16, and a plurality of slots are arranged in the insertion part 16 and used for being inserted into the fixed seat.

Example two

A washing machine, its door cover includes the two-way rotary damper of embodiment one, when the washing machine door cover is closed, the main rotor shaft 22 rotates clockwise, first oil through channel and second oil through channel are both closed at this moment, silicone oil can only flow through in first oil through runner 223 and second oil through runner 224, and the first oil through runner 223 and second oil through runner 224 cross-sectional area narrow gradually, the flowrate of the viscous fluid diminishes gradually, rotor shaft 2 is to the rotatory resistance grow of damper shell 1, thus realize rotor shaft 2 slow descending process more smooth, avoid the impact to the blade, realize the flexible closing of washing machine door cover promptly.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, the changes are still within the scope of the present invention if they fall within the scope of the claims and their equivalents.

Claims

1. A bi-directional rotary damper, comprising:

2. The bi-directional rotary damper of claim 1,

the first rotor blade comprises a first baffle and a first blade, the first baffle is arranged on the slave rotor shaft, the first baffle is provided with at least one first oil passing groove, the first blade is a U-shaped groove with an opening at the bottom surface, the opening of the first blade is downwards arranged on the first baffle, the width of the opening at the bottom surface of the first blade is larger than the thickness of the first baffle, the first blade can move circumferentially relative to the first baffle, the length of the first blade and the length of the first baffle are both consistent with the length of the slave rotor shaft, the top surface of the first blade is arc-shaped and is in contact with the inner wall of the damper shell, and a through first opening hole is formed in one side of the first blade, which is far away from the first partition plate;

3. The bi-directional rotary damper of claim 2, wherein two oil sumps are provided on each of the first and second baffles.

4. A bi-directional rotary damper of claim 1 wherein said damper housing has a removable end cap at an end thereof adjacent said main rotor shaft, said end cap being in sealing engagement with said damper housing.

5. The bi-directional rotary damper of claim 4, wherein the rotor shaft is formed at a central portion thereof with a radially protruding annular flange portion, and the end cap is fitted over an outer circumferential surface of the flange portion to be sealingly engaged with the damper housing.

6. The bi-directional rotary damper of claim 5, wherein a seal ring groove is provided in the middle of the flange portion.

7. The bi-directional rotary damper of claim 1, wherein the viscous fluid is silicone oil.

8. The bi-directional rotary damper of claim 1, wherein the damper housing is removably insertable into the anchor block.

9. The bi-directional rotary damper of claim 8, wherein the damper housing has an insert portion at an end thereof remote from the main rotor shaft, the insert portion having a plurality of slots therein.

10. A washing machine characterized by comprising the bidirectional rotary damper of any one of claims 1 to 9.