CN1519417A - Shock absorber of washing machine - Google Patents
Shock absorber of washing machine Download PDFInfo
- Publication number
- CN1519417A CN1519417A CNA2004100024411A CN200410002441A CN1519417A CN 1519417 A CN1519417 A CN 1519417A CN A2004100024411 A CNA2004100024411 A CN A2004100024411A CN 200410002441 A CN200410002441 A CN 200410002441A CN 1519417 A CN1519417 A CN 1519417A
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- damping piece
- damping
- vibration
- shock absorber
- cylinder
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- 239000006096 absorbing agent Substances 0.000 title claims description 65
- 230000035939 shock Effects 0.000 title claims description 65
- 238000005406 washing Methods 0.000 title claims description 27
- 238000013016 damping Methods 0.000 claims abstract description 243
- 230000002093 peripheral effect Effects 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 239000013536 elastomeric material Substances 0.000 claims description 4
- 239000004519 grease Substances 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 2
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
A damper includes: a cylinder; a piston rod disposed to be movable linearly in the cylinder; and a plurality of damping members installed between the cylinder and the piston rod, and generating a damping force by multi-stage so that when a vibration transmitted from the cylinder to the piston rod or from the piston rod to the cylinder is big, a strong damping force is generated, whereas when a vibration is small, a weak damping force is generated. A damping force is generated by stages depending on a displacement of a vibration transferred from the cylinder to the piston or from the piston to the cylinder. If a small amount of vibration is transferred, a weak damping force is generated, whereas if a large amount of vibration is transferred, a strong damping force is generated. Accordingly, a vibration damping performance can be improved.
Description
Technical field
The present invention relates to the shock absorber of washing machine, more particularly, relate to the shock absorber that can strengthen damping capacity, by applying a heavy damping power when violent, realize that when vibration hour applies a underdamping power it strengthens damping capacity when vibration.
Background technology
Fig. 1 is the cutaway view of common tumbling-box washing machine.
As shown in Figure 1, common tumbling-box washing machine comprises its outside shell 2 of formation, be arranged in this shell 2 and deposit the wash bucket 4 of slurry, with rotatable mode be arranged in the wash bucket 4 and to clothing wash, the cylinder 6 of dehydrating operations, and the drive motors 10 that is arranged on wash bucket 4 rear sides, this drive motors 10 is connected in cylinder 6 so that swing roller 6 by driving shaft 8.
Fig. 2 is the cutaway view according to the shock absorber of the washing machine of prior art.
Comprise cylinder 20 on the external peripheral surface that is installed in wash bucket 4 according to the shock absorber 18 of the washing machine of prior art, piston rod 22 inserts wherein with in this cylinder 20 internal linear motion and be installed in the bottom surface of shell, and is fixed on the friction member 24 of piston rod 22 outer circumference surfaces and by the friction of cylinder 20 inner circumferential surfaces being carried out the vibration damping operation.
The unit 30 that is articulated and connected that is hinged on the external peripheral surface of wash bucket 4 is formed on cylinder 20 upper ends, and the lower end of cylinder 20 be opening so that piston can insert in it, and lead ring 26 is installed on the inner peripheral surface of open lower end so that piston rod 22 is linearly movably.
Insertion groove 28 is formed on the top of piston rod 22 so that friction member 24 can fix insertedly, and the unit 30 that is articulated and connected be formed on piston rod 22 the lower end and be hinged on the basal surface of shell 2.
According to the function of the shock absorber 18 of the washing machine of prior art is to rub at the inner circumferential surface of cylinder 20 when vibration friction member 24 when wash bucket 4 produces, thereby produces damping force to suppress vibration.
Yet because prior oscillating damper, if the frictional force that friction member produces is provided with greatlyyer, friction member will not rub on the inner circumferential surface of cylinder 20, does not produce damping force.So, the vibration transfer of wash bucket is given shell, increases the noise and the vibration of washing machine.
Simultaneously, if the frictional force that friction member produces setting is less, when producing bigger vibration, the damping force of friction member reduces, and is not enough to damping ground and supports wash bucket.Therefore, the performance of washing machine dies down, and produces bigger vibration.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of shock absorber that is used for washing machine,, when being subjected to vibrating greatly, produce a heavy damping power, can strengthen damping property by when being subjected to small vibration, producing a underdamping power.
In order to realize these and other advantages and according to purpose of the present invention, as concrete summary and extensive interpretation here, provide a kind of shock absorber that is used for washing machine, it comprises: the cylinder that is connected in one of wash bucket and shell; Be connected in the remaining piston rod one of in addition in wash bucket and the shell; And be installed between cylinder and the piston rod and produce the damping unit of multistage damping force, when from the cylinder to the piston rod or be delivered to vibration that cylinder transmits from piston rod and hour produce a underdamping power, when the vibration of transmitting is big, produce a heavy damping power from the cylinder to the piston rod or from the piston rod to the cylinder.
Damping unit comprises: be installed on the piston rod and when producing less vibration strain to produce first damping piece of damping force; And be installed in the first damping piece external peripheral surface and when producing bigger vibration, produce second damping piece of damping force by rubbing on the inner surface at cylinder.
First damping piece is made by the material with elastic force, and its inner circumferential surface is fixed on the inboard maintenance certain interval of the joint unit of the joint unit that is formed at piston rod and both sides being arranged to and being formed at piston rod with inserting.
First damping piece is made by elastomeric material, when the vibration of transmitting from the cylinder to the piston rod or from piston rod piston rod cylinder produces strain during less than first shift value.
Second damping piece is made by the sponge-like material of fat absorption.
Damping unit comprises: be installed on the piston rod and produce first damping piece of damping force during less than first shift value when the vibration that produces; Be installed on the excircle of first damping piece and be equal to or greater than first shift value when the vibration that produces but produce second damping piece of damping force during less than second shift value; Be installed on the second damping piece excircle and when the vibration that produces is equal to or greater than second shift value, produce the 3rd damping piece of damping force.
Damping unit comprises: the connecting rod that is connected in piston-rod lower end; Be fixed on first damping piece at connecting rod center, and when the vibration of transmitting during less than predetermined value first damping piece produce damping force by strain; But be installed in the first damping piece two ends and with friction mode tightly attached to second damping piece of the cylinder friction surface that can rub, and when the vibration of transmitting during greater than predetermined value second damping piece by with cylinder inner surface on friction produce damping force.
Damping unit comprises: be connected the first helical spring type damping piece of piston-rod lower end, and when the vibration that produces during less than predetermined value first damping piece produce damping force; Support the support bar of an end of the first damping piece opposite side; But be connected the support bar two ends with inserting and with friction mode tightly attached to second damping piece of the cylinder friction surface that can rub.
Damping unit comprises: the connecting rod that is fixed on piston-rod lower end; Connecting rod inserts in it and this connecting rod can linearly moving support bar; First damping piece and first helical spring that form first helical spring type are supported between support member and the connecting rod, and when the vibration that produces during less than predetermined value first damping piece produce damping force; And second damping piece that is fixed on the two ends of support member, and when the vibration that produces during greater than predetermined value second damping piece produce damping force by friction on the friction surface at cylinder.
Aforementioned and other purposes of the present invention, feature, aspect and advantage are from below in conjunction with becoming clearer the accompanying drawing detailed description of the present invention.
Description of drawings
Fig. 1 is a cutaway view, shows common tumbling-box washing machine;
Fig. 2 is a cutaway view, shows the shock absorber according to washing machine of the present invention;
Fig. 3 is a cutaway view, shows the shock absorber according to the first embodiment of the present invention;
Fig. 4 is the enlarged drawing of Fig. 3 " A " part;
Fig. 5 and Fig. 6 show the duty of the shock absorber of first embodiment of the invention;
Fig. 7 is a cutaway view, shows shock absorber according to a second embodiment of the present invention;
Fig. 8 is the enlarged drawing of Fig. 7 " B " part;
Fig. 9 to Figure 11 shows the duty of the shock absorber of second embodiment of the invention;
Figure 12 is a cutaway view, shows the shock absorber of a third embodiment in accordance with the invention;
Figure 13 and Figure 14 show the duty of the shock absorber of third embodiment of the invention;
Figure 15 is a cutaway view, shows the shock absorber of a fourth embodiment in accordance with the invention;
Figure 16 and Figure 17 show the duty of the shock absorber of fourth embodiment of the invention;
Figure 18 is a cutaway view, shows shock absorber according to a fifth embodiment of the invention;
Figure 19 and Figure 20 show the duty of the shock absorber of fifth embodiment of the invention.
The specific embodiment
In detail with reference to the preferred embodiments of the present invention, the example of preferred embodiment is shown in the drawings now.
Tumbling-box washing machine according to preferred embodiment will be described with reference to the accompanying drawings.
Fig. 3 is the cutaway view that illustrates according to the shock absorber of the first embodiment of the present invention.
Back with reference to figure 1, washing machine according to the present invention comprises and constitutes its outside shell 2, be arranged in this shell 2 and deposit the wash bucket 4 of slurry, with rotatable mode be arranged in the wash bucket 4 and to clothing wash, the cylinder 6 of dehydrating operations.In addition, washing machine of the present invention also comprises the support spring 16 between the upper inside wall of a plurality of tops that are installed in wash bucket 4 and shell 2, and the shock absorber between the lower inner wall of a plurality of bottoms that are installed in wash bucket 4 and shell 2, thereby after vibration produces from wash bucket 4 to reduce to be delivered to the vibration on the shell.
Shock absorber 50 according to first embodiment of the invention comprises: the cylinder 52 that is installed in wash bucket 4 external peripheral surfaces; Be installed in the piston rod 54 of shell 2 bottom surfaces; Be installed in the damping unit on the piston rod 54, and damping unit produces underdamping power when less vibration produces, damping unit produces heavy damping power when bigger vibration produces.
Damping unit comprises first damping piece 56, is used for producing when being transmitted less than the vibration of predetermined value damping force; And second damping piece 58 that is installed in first damping piece, 56 external peripheral surfaces, when producing, the vibration greater than predetermined value produces damping force.
The lower end of piston rod 54 is provided with the unit 64 that is articulated and connected, and it is hinged on the basal surface of shell 2, and at an upper portion thereof, joint unit 68 forms at circumferencial direction and digs down the predetermined degree of depth, so that first damping piece can be connected with it.
The diameter of joint unit 68 is less than the diameter of piston rod 54, and the both sides of joint unit 68 comprise have the pre-determined tilt angle inclined-plane 70 of (θ 2).
To describe first damping piece 56 below in detail.
First damping piece 56 is made by the material with certain elastic force and is had the through hole 74 that is formed on its inner peripheral surface, is connected with it so that connect with unit 68 with inserting, and forms a groove 76 at circumferencial direction on its external peripheral surface, and support member 60 inserts wherein.
The side of first damping piece 56 comprises have the inclination angle inclined-plane 78 of (θ 1), and width increases when it is outside.The inclination angle on the inclined-plane 78 of first damping piece 56 (θ 1) is than the little predetermined angle in inclination angle (θ 2) (θ 3) on the inclined-plane 70 of joint unit 68, so that the side of first damping piece 56 is configured to joint unit 68 certain interval is arranged.
First damping piece 56 is preferably made by elastomeric material and is had predetermined elasticity power, flexibly is out of shape when cylinder 52 takes place less than the vibration of first shift value (d) with box lunch.
Second damping piece 58 forms annular, and its inner circumferential surface is fixed on the support member 60 with inserting, and external peripheral surface is arranged on the friction surface of cylinder 52 and rubs.
The operation of the shock absorber of the washing machine of structure as described will be described below.
Fig. 5 and Fig. 6 show the duty of the shock absorber of the first embodiment of the present invention.
At first, when washing machine was started, the vibration transfer that is created in wash bucket 4 along with the rotation of cylinder 6 was given cylinder 52.At this moment, if the vibration that passes to cylinder 52 is less than first shift value (d), as shown in Figure 5, second damping piece 58 remains on tightly attached to the state on the inner circumferential surface of cylinder 52, in this state, inclined-plane 78 flexibly is out of shape a preset width (D1) to produce damping force.Therefore, the vibration less than first shift value (D1) of wash bucket 4 generations is suppressed and passes to shell.
In service, because the washing operation of washing machine, if having big vibration greater than second shift value (D2) of first shift value (D1) takes place and passes to cylinder 52, as shown in Figure 6, it has surpassed the regime of elastic deformation of first damping piece 56, and in this case, second damping piece 58 rubs on rubbing surface 72, produce damping force, to suppress that the big vibration of wash bucket is passed to shell.Here, as long as second damping piece 58 is in friction, the second shift value D2 equal distance (D3) and first damping piece 56 distortion width (D1) with.
Fig. 7 is the cutaway view that illustrates according to the shock absorber of second embodiment of the invention, and Fig. 8 is the enlarged drawing of Fig. 7 " B " part.
First damping piece 92 is connected on the joint unit 68 that is formed at piston rod 54 with inserting.First support member 98 is fixed on the external peripheral surface of first damping piece 92.Second damping piece 94 is fixed on the external peripheral surface of first support member 98.Second support member 100 is fixed on the external peripheral surface of second damping piece 94.The 3rd damping piece 96 is fixed on the external peripheral surface of second support member 100 and friction on the rubbing surface 72 of cylinder 52.
First damping piece 92 is made by the material that himself has elastic force, and joint unit 68 and external peripheral surface that its inner surface is connected piston rod 54 with inserting are fixed on first support member 98.
The side of first damping piece 92 has inclined-plane 108, and this inclined-plane 108 has inclination angle (θ 5), and its width outwards broadens.The inclination angle on the inclined-plane 108 of first damping piece 92 (θ 5) is less than the inclination angle (θ 4) on the inclined-plane 70 of joint unit 68, so that the side of first damping piece 92 is configured to become certain interval with the both sides of joint unit 68.
Have columniform first support member 98 and comprise that being formed on its inner surface also is fixed on first copulational protuberance 102 of the external peripheral surface of first damping piece 92 with inserting, and second copulational protuberance 105 that is fixed on the inner circumferential surface of second damping piece 94 with being formed on its outer surface and insertion.
Second damping piece 94 is fixed between first and second support members 98 and 100, and its side forms the inclined-plane with pre-determined tilt angle (θ 6).
First damping piece 92 and second damping piece 94 are made by rubber, and second damping piece 94 has the elastic force bigger than the elastic force of first damping piece 92.
With reference to the 3rd damping piece 96, its inner circumferential surface is fixed in second support member 100 with being inserted into, and its external peripheral surface is configured to rub with the rubbing surface 72 of cylinder 52.The 3rd damping piece 96 is made by the sponge-like material of the grease that has absorption in it.
Shock absorber according to the second embodiment of the present invention of constructing as mentioned above will be described below.
Fig. 9 to Figure 11 shows the duty of the shock absorber of the second embodiment of the present invention.
At first, when the vibration transfer of wash bucket generation arrives cylinder, and if should vibrate less than first displacement (P1), as shown in Figure 9, strain is predetermined displacement value (T) under the state of first damping piece 92 in the engaging groove 68 that is fixed in piston rod, reduces vibration to produce damping force.
Less than second shift value (P2), first damping piece 92 and second damping piece, 94 equal strains are that predetermined displacement value (T2) is to produce damping force if the vibration that cylinder 52 produces is equal to or greater than first shift value (P1).
If the shift value (P3) that cylinder 52 produces is greater than second shift value (P2), as shown in figure 11, first damping piece 92 and second damping piece, 94 equal strains are that shift value (T2) is to produce damping force, and the 3rd damping piece 96 friction in 72 of the frictions of cylinder 52, shift value is (T3), with the generation damping force, thereby the big vibration that suppresses to produce passes to shell 2 from wash bucket 4.
Figure 12 is the shock absorber cutaway view that a third embodiment in accordance with the invention is shown.
The shock absorber of a third embodiment in accordance with the invention comprises the piston rod 54 of the external peripheral surface that is installed in wash bucket 4, be installed in the cylinder 52 on the bottom surface of shell 2, and be installed in damping unit between the inner circumferential surface of piston rod 54 and cylinder 52, and when less vibration takes place, produce a underdamping power, when bigger vibration takes place, produce a heavy damping power.
This damping unit comprises the connecting rod that is connected in piston rod 54 bottoms, be fixed on first elastic component 124 of connecting rod bottom, and when taking place, the vibration less than predetermined value produces damping force by strain, and second damping piece 128 that is installed in first elastic component, 124 two ends, and when taking place greater than the vibration of predetermined value by the rubbing surface on the inner circumferential surface that is being formed at cylinder 52 72 on friction produce damping force.
First damping piece 124 forms the leaf spring form, absorbs vibration by strain when less vibration is transmitted by piston rod 54.
Second damping piece 128 forms form of annular rings and is arranged to make its inner surface integrally to be fixed in support member 126, and its external peripheral surface rubs on the friction surface 72 of cylinder 52.
Preferably, second damping piece 128 is made by the sea sample material that absorbs grease.If pass to cylinder 52 vibrations less than predetermined value from piston rod 54, second damping piece 128 remains on tightly on the rubbing surface attached to cylinder 52, if and the vibration that passes to piston rod 54 is greater than predetermined value, second damping piece 128 rubs on the rubbing surface 72 of cylinder 52, to produce damping force.
Shock absorber according to third embodiment of the invention moves as follows.
At first, starting washing machine and along with the rotation of cylinder 6 is given piston rod 54 from the vibration transfer of wash bucket 4.At this moment, if vibration is less than predetermined value, as shown in figure 13, second damping piece 128 remains on tightly the inner circumferential surface attached to cylinder 52, and first damping piece 124 is owing to pass to the vibration of piston rod 54 and flexibly be out of shape to produce damping force in vertical direction and absorb vibration by connecting rod 122.
In this process, when the vibration that passes to piston rod 54 when the washing operation owing to washing machine surpassed predetermined value, as shown in figure 14, it surpassed the strain limit of first damping piece 124.So, second damping piece 128 rubs on the rubbing surface 72 of cylinder 52 and suppresses the big vibration that wash bucket 4 passes to shell 2 to produce damping force.
Figure 15 is the cutaway view that the shock absorber of a fourth embodiment in accordance with the invention is shown, and Figure 16 and Figure 17 are the views of duty that the shock absorber of the fourth embodiment of the present invention is shown.
The shock absorber 130 of a fourth embodiment in accordance with the invention is the same with the shock absorber 120 of the third embodiment of the present invention except damper unit has different structure.
Damper unit in the fourth embodiment of the present invention comprises the damping piece 132 of first helical spring type, and the one end is connected in the lower end of piston rod 54, and produces damping force when producing less than the vibration of predetermined value ground; The support member 134 that is used for fixing the other end of first damping piece 132; But and be connected second damping piece 136 at support member 134 two ends with inserting and with friction mode tightly attached to the friction surface 72 of cylinder 52.
First damping piece 132 of helical spring type is connected between the center of the end of piston rod 54 and support member 134, and produces damping force when transmitting by piston rod 54 less than the vibration of predetermined value.
The shock absorber 130 of a fourth embodiment in accordance with the invention moves as follows.
When the vibration less than predetermined value takes place, helical spring, promptly first damping piece 132 shrinks or stretches producing damping force as shown in figure 16, or when the vibration greater than predetermined value takes place, second damping piece 136 in the friction surface friction of cylinder 52 with generation damping force as shown in figure 17.
Figure 18 is the cutaway view that shock absorber according to a fifth embodiment of the invention is shown, and Figure 19 and Figure 20 are the views of duty that the shock absorber of the fifth embodiment of the present invention is shown.
Damper unit according to a fifth embodiment of the invention comprises: the connecting rod 142 that is fixed on piston rod 54 lower ends; Support member 144, connecting rod 142 inserts and wherein can move linearly; Be supported on first damping piece 146 and 148 between support member 144 and the connecting rod 142, and when small vibration produces, produce damping force; And second damping piece 150 that is fixed on support member 144 two ends, and when producing big vibration, pass through to rub on the friction surface 72 at cylinder 52 to produce damping force.
The through hole 156 that is formed on support member 144 centers make connecting rod 142 can from its by and move linearly, first and second blocks 158 and 160 go at connecting rod 142 to support first and second damping pieces 146 and 148.
First and second damping pieces 146 and 148 are referred to as first helical spring 146 and second helical spring 148 respectively, first helical spring is arranged on support member 144 upsides, the one end is supported by a side of support member 144, the other end is supported by first block 158 that is formed on the connecting rod 142, second helical spring is arranged on the downside of support member 144, the one end is supported by support member 144 other ends, and the other end is supported by second block 160 that is formed on the connecting rod 142.
When being transmitted less than the vibration of predetermined value, first helical spring 146 and second helical spring 148 shrink or stretch to produce damping force as shown in figure 19.Simultaneously, when the vibration greater than predetermined value produced, second damping piece 150 rubbed on the friction surface 72 of cylinder 52 to produce damping force.
As described above, shock absorber of the present invention has following advantage.
That is to say that this shock absorber produces damping force according to the vibration separation of transmitting from the cylinder to the piston or from the piston to the cylinder.Therefore,, then produce a underdamping power,, then produce a heavy damping power if bigger vibration is transmitted if less vibration is transmitted.Therefore can strengthen damping property.
Do not break away from because the present invention can implement in a variety of forms its spiritual essence and, essential characteristic, thereby should be appreciated that except as otherwise noted.The foregoing description is not limited by previously described any details, and should in its spiritual essence and claim restricted portion, broadly explain, and therefore fall into the content of claim and variation and the modification in the boundary, or therefore the equivalent of this content and boundary is included in the scope of claim.
Claims (20)
1. shock absorber that is used for washing machine comprises:
Be connected in the cylinder of one of the wash bucket of washing machine and shell;
Be connected in remaining another piston rod in the wash bucket of washing machine and the shell; And
Be installed between this cylinder and this piston rod and produce the damping unit of damping force with multistage form, when from the cylinder to the piston rod or the vibration from piston rod to the cylinder transmission produce a underdamping power when being small vibration, when from the cylinder to the piston rod or the vibration from piston rod to the cylinder transmission be the heavy damping power that produces when vibrating greatly.
2. shock absorber as claimed in claim 1 is characterized in that damping unit comprises:
Be installed in first damping piece on the piston rod, and when producing less vibration its strain to produce damping force; And
Be installed in second damping piece on the excircle of first damping piece, and when producing bigger vibration, produce damping force by friction on the inner circumferential surface at this cylinder.
3. shock absorber as claimed in claim 2, it is characterized in that, first damping piece is made by the material with elastic force, and its inner circumferential surface is fixed on the joint unit that is formed at this piston rod with inserting, and its both sides are configured to and are formed on the inboard maintenance certain interval of the joint unit of this piston rod.
4. shock absorber as claimed in claim 3, it is characterized in that, the both sides of the joint unit of this piston rod have the inclined-plane, this inclined-plane has inclination angle (θ 1), and the side of this first damping piece has the inclined-plane, this inclined-plane has inclination angle (θ 2), and inclination angle (θ 2) are less than the inclination angle (θ 1) on the inclined-plane of joint unit.
5. shock absorber as claimed in claim 2 is characterized in that first damping piece is made by elastomeric material, when the vibration of transmitting from the cylinder to the piston rod or from the piston rod to cylinder strain during less than first shift value.
6. shock absorber as claimed in claim 2 is characterized in that, support member is installed in the support member between first damping piece and second damping piece, second damping piece is fixed on the external peripheral surface of first damping piece.
7. shock absorber as claimed in claim 6 is characterized in that, the inner circumferential surface of second damping piece is fixed in this support member with inserting, and the external peripheral surface of second damping piece rubs on the friction surface of this cylinder.
8. shock absorber as claimed in claim 7 is characterized in that, second damping piece is made by the sponge-like material that absorbs grease.
9. shock absorber as claimed in claim 1 is characterized in that damping unit comprises:
Be installed on the piston rod and when the vibration less than first shift value produces, produce first damping piece of damping force;
Be installed on the first damping piece excircle and produce second damping piece of damping force when producing when being equal to or greater than this first shift value but less than the vibration of second shift value;
Be installed on the second damping piece excircle and when the vibration that is equal to or greater than this second shift value produces, produce the 3rd damping piece of damping force.
10. shock absorber as claimed in claim 9 is characterized in that, first support member is fixed between first damping piece and second damping piece, and second support member is fixed between second damping piece and the 3rd damping piece.
11. shock absorber as claimed in claim 9, it is characterized in that, first damping piece forms its inner circumferential surface and is fixed on the joint unit that is formed at piston rod, and its side forms the inclined-plane with inclination angle (θ 5), and this inclination angle (θ 5) are less than the inclination angle (θ 4) on the inclined-plane of joint unit.
12. shock absorber as claim 10, it is characterized in that, second damping piece has the inner circumferential surface on the external peripheral surface that is fixed on first support member, be fixed on the external peripheral surface of second support member, and the side forms the inclined-plane with inclination angle (θ 6), and this inclination angle (θ 6) are less than the inclination angle (θ 7) on the inclined-plane of second support member.
13. the shock absorber as claim 10 is characterized in that, first damping piece and second damping piece are made by elastomeric material, and the 3rd damping piece is made by the sponge material of fat absorption.
14. shock absorber as claimed in claim 1 is characterized in that, damping unit comprises:
Be connected the connecting rod of piston-rod lower end;
Be fixed on this connecting rod center and when producing, produce first damping piece of damping force by strain less than the vibration of predetermined value;
But be installed in the first damping piece two ends, with friction mode tightly attached to the friction surface of cylinder and produce second damping piece of damping force when the vibration of transmitting greater than this predetermined value by friction on friction surface.
15. the shock absorber as claim 14 is characterized in that, the first friction configuration becomes the leaf spring type, and it flexibly is out of shape the less vibration that transmits by piston rod to absorb.
16. the shock absorber as claim 14 is characterized in that, support member is connected in the external peripheral surface of this support member with being formed on the first friction member two ends and the insertion of second friction member.
17. shock absorber as claimed in claim 1 is characterized in that, damping unit comprises:
Be connected the lower end of piston rod and when producing, produce the first spiral spring type damping piece of damping force less than the vibration of predetermined value;
Be used to support the support bar of end resistance of the other end of first damping piece; And
But be connected these support bar two ends with inserting and with friction mode tightly attached to second damping piece of the friction surface of cylinder.
18. the shock absorber as claim 17 is characterized in that, first damping piece forms the helical spring with predetermined elastic force, and the one end is fixed on the piston rod, and the other end is fixed on the center of support bar.
19. shock absorber as claimed in claim 1 is characterized in that, damping unit comprises:
Be fixed on the connecting rod of piston-rod lower end;
Connecting rod inserts support member wherein, so that this connecting rod moves linearly;
Form the first and second spiral bullets that are supported between support member and the connecting rod and when the vibration less than predetermined value produces, produce damping force first damping piece;
Be fixed on these support bar two ends and when the vibration greater than predetermined value produces, produce second damping piece of damping force by rubbing on the friction surface at cylinder.
20. the shock absorber as claim 19 is characterized in that, the center of support member is formed with through hole so that connecting rod can from wherein by and move linearly, and first and second blocks are formed on the connecting rod supporting first damping piece, and
First helical spring of first damping piece is supported on a side of this support member and is formed between first block of this connecting rod, and second helical spring of first damping piece is supported on the opposite side of this support member and be formed between second block of this connecting rod.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR05960/2003 | 2003-01-29 | ||
| KR10-2003-0005960A KR100531806B1 (en) | 2003-01-29 | 2003-01-29 | Combination type damper and drum type washing machine having the same |
| KR06603/2003 | 2003-02-03 | ||
| KR10-2003-0006603A KR100474348B1 (en) | 2003-02-03 | 2003-02-03 | Two stage damper and washing machine having the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1519417A true CN1519417A (en) | 2004-08-11 |
Family
ID=32737766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100024411A Pending CN1519417A (en) | 2003-01-29 | 2004-01-20 | Shock absorber of washing machine |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20040144137A1 (en) |
| CN (1) | CN1519417A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103109010A (en) * | 2010-09-17 | 2013-05-15 | Lg电子株式会社 | Washing machine |
| CN105556024A (en) * | 2013-07-22 | 2016-05-04 | Lg电子株式会社 | Laundry treatment machine |
| CN105556023A (en) * | 2013-07-22 | 2016-05-04 | Lg电子株式会社 | Laundry treatment apparatus |
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|---|---|---|---|---|
| DE102005032499B4 (en) * | 2004-07-13 | 2009-10-22 | Lg Electronics Inc. | Damper for vibration damping and thus equipped washing machine |
| ITPN20120047A1 (en) | 2012-08-14 | 2014-02-15 | Ro Sa Plast Spa | PERFECTED SHOCK ABSORBER |
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| CN105177927A (en) * | 2015-08-05 | 2015-12-23 | 方琼 | Washing machine damping suspension rod |
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2004
- 2004-01-14 US US10/756,514 patent/US20040144137A1/en not_active Abandoned
- 2004-01-20 CN CNA2004100024411A patent/CN1519417A/en active Pending
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| US9127396B2 (en) | 2010-09-17 | 2015-09-08 | Lg Electronics Inc. | Washing machine having a friction suspension |
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| CN105556024A (en) * | 2013-07-22 | 2016-05-04 | Lg电子株式会社 | Laundry treatment machine |
| CN105986407A (en) * | 2015-01-29 | 2016-10-05 | 青岛海尔洗衣机有限公司 | Shock absorber, washing machine and clothes dryer |
| CN105986407B (en) * | 2015-01-29 | 2020-01-10 | 青岛海尔洗衣机有限公司 | Shock absorber, washing machine and clothes dryer |
| CN107667193A (en) * | 2015-05-29 | 2018-02-06 | Bsh家用电器有限公司 | Vibration absorber |
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| CN106641095B (en) * | 2016-12-29 | 2018-11-16 | 中国科学院长春光学精密机械与物理研究所 | Mechanical equipment and its rotation axis shock absorbing system |
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| WO2020082981A1 (en) * | 2018-10-23 | 2020-04-30 | 青岛海尔滚筒洗衣机有限公司 | Variable damping shock absorber and clothing processing device |
| CN111088659A (en) * | 2018-10-23 | 2020-05-01 | 青岛海尔滚筒洗衣机有限公司 | Variable damping shock absorber and clothes treatment equipment |
| CN111088659B (en) * | 2018-10-23 | 2022-06-17 | 合肥海尔滚筒洗衣机有限公司 | Variable damping shock absorber and clothes treatment equipment |
| CN109763956A (en) * | 2018-12-20 | 2019-05-17 | 青岛海尔股份有限公司 | Compressor shock absorption footpad and refrigerator |
| CN111607941A (en) * | 2019-02-25 | 2020-09-01 | 青岛海尔滚筒洗衣机有限公司 | Shock Absorber and Laundry Treatment Equipment for Laundry Treatment Equipment |
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| CN112391798B (en) * | 2019-08-16 | 2024-07-16 | 青岛海尔洗衣机有限公司 | Vibration damper and washing machine with same |
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| US20040144137A1 (en) | 2004-07-29 |
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