CN101387061B - Suspension apparatus for washing machine - Google Patents
Suspension apparatus for washing machine Download PDFInfo
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- CN101387061B CN101387061B CN2008101756523A CN200810175652A CN101387061B CN 101387061 B CN101387061 B CN 101387061B CN 2008101756523 A CN2008101756523 A CN 2008101756523A CN 200810175652 A CN200810175652 A CN 200810175652A CN 101387061 B CN101387061 B CN 101387061B
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- CN
- China
- Prior art keywords
- washing machine
- damper cap
- extension spring
- draft hitch
- damping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005406 washing Methods 0.000 title claims abstract description 78
- 239000000725 suspension Substances 0.000 title abstract description 12
- 238000013016 damping Methods 0.000 claims abstract description 126
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 73
- 239000011148 porous material Substances 0.000 claims description 32
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 10
- 230000010355 oscillation Effects 0.000 description 8
- 239000000314 lubricant Substances 0.000 description 7
- 230000009467 reduction Effects 0.000 description 6
- 239000004519 grease Substances 0.000 description 5
- 230000018044 dehydration Effects 0.000 description 4
- 238000006297 dehydration reaction Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004900 laundering Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Images
Classifications
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- 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
- D06F37/24—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a vertical axis
-
- 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
-
- 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
- D06F37/02—Rotary receptacles, e.g. drums
- D06F37/12—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a vertical axis
Abstract
A suspension apparatus for a washing machine comprises: a connection rod having one end mounted to a body of a washing machine; a damper cap having another end of the connection rod penetratingly installed thereat, and mounted to an outer tub; a damper spring installed in the damper cap; a damper base mounted to the damper cap, sling along an inner circumferential surface of the damper cap, and configured to support the connection rod or the damper spring, and; and extension springs disposed below the damper base, and configured to extend an edge of the damper base to an inner surface of the damper cap, wherein the extension springs have a consecutive circumference. Accordingly, an air gap between the damper base and the damper cap can have a uniform clearance, and lowering of a viscous damping force due to excessive abrasion of a specific part can be prevented.
Description
Related application
The theme that the present invention relates to is included in Korea S in first to file No.10-2007-0076581, and its applying date is on July 30th, 2007, and its full content is incorporated into this by reference.
1. technical field
The application relates to a kind of washing machine, more specifically, relates to a kind of suspension arrangement that is used for washing machine, even when using washing machine for a long time, this suspension arrangement also can reduce excessive vibration effectively by keeping viscous damping force.
2. background technology
Usually, washing machine cleans clothes by following operation, that is, utilize washing agent softening process, utilize the current that washing blade rotate to produce friction process, utilize the collision operation of washing blade etc.By using motor as main drive, washing machine is carried out washing procedure, rinsing process and dehydration procedure, so that clean clothes by washing agent and water.Washing machine comprise motor as driver element, to clothing transmit energy mechanical part, be used for controlling controller, the water supply unit that is used for supplying water of laundry operation and the drainage cell that is used for draining.
Washing machine roughly is divided into cylinder type, stirring type and oscillating mode according to laundering process.
For stirring type, by the outstanding agitator in bucket center in wing along right and left to rotation come cleaning clothes.For oscillating mode, rotate the eddy current that is produced by the disc vibrator and come washing clothes.For cylinder type, water, washing agent and clothing are put into the cylinder with a plurality of protuberances, they are slowly run around horizontal axis, come washing clothes by the impact that utilizes protuberance lifting clothing to be produced thus.
Fig. 1 is the schematic cross-section according to the washing machine of correlation technique, and Fig. 2 is along the sectional view of Fig. 1 ' II-II ' line intercepting.
Referring to Fig. 1 and 2, washing machine 1 comprises fuselage or the casing 10 that forms outward appearance; Be installed in the outer bucket 12 in the casing 10; Be installed in the interior bucket 13 in the outer bucket 12; Draft hitch 20 or a plurality of suspension, an end of each suspension is connected with the last inner circumferential surface of described fuselage or casing 10, and the other end is connected with the following external peripheral surface of outer bucket 12, to be used for supporting outer bucket 12; And the driver element 15 that is arranged in described outer bucket 12 belows, to be used to drive interior bucket 13.
Each suspension 20 comprises the damper cap (damper cap) 22 that is installed in outer bucket 12 belows; One end penetrates the connecting rod 21 that damper cap 22 and the other end are assembled to casing 10; Be assemblied in the damping spring 23 in the damper cap 22, it is provided for absorbing the vibration from outer bucket 12; And the damping pedestal 24 that is installed in damper cap 22 lower openings, it is provided for supporting linkage 21 or damping spring 23.
Between damper cap 22 and damping pedestal 24, form a narrow air cleft 26, extension spring (extension spring) 25 is installed below damping pedestal 24.
Described extension spring 25 is suitable for extending the bottom of described damping pedestal 24.
Fig. 3 shows the bottom surface of the draft hitch among Fig. 2, and with reference to Fig. 3, each extension spring 25 all has two ends separated from one another, i.e. a discrete circumference.Here, described two ends separated from one another are crooked.Therefore discontinuous part 25a does not contact with damping pedestal 24, and this extension spring 25 is discontinuous with the contacting of bottom of damping pedestal 24.
The very big vibration or the amplitude that resonance produced in (moment that dehydration procedure begins) when suspension 20 is used to reduce undue oscillation.
Reduce mechanism according to fundamental vibration, produce viscous damping force by the air of discharging through the pore (not shown) of damper cap 22, and by damper cap 22 and the fricative each other friction damping force of damping pedestal 24, the vibration that bucket 13 produces in reducing.Reduce undue oscillation or amplitude by viscous damping force herein.
Yet there is following point in traditional mechanism.
Form air cleft 26 between damper cap 22 and the damping pedestal 24, make the laundry reciprocating motion.Use if washing machine 1 changes with about 1000, then the gap of air cleft 26 increases so that a large amount of air leaks by air cleft 26.This will cause reducing greatly viscous damping force, therefore can not reduce undue oscillation.
In addition, be installed in outer bucket 12 belows because driver element 15 departs from the center, outer bucket 12 has an initial static deflection towards driver element 15 (C).
Further, when described extension spring 25 was used to prevent that described air cleft 26 has the gap of increase, a large amount of gas leaked out by the discontinuous part of described extension spring 25.That is to say that at the discontinuous part 25a place of described extension spring 25, described damping pedestal 24 is not pushed outwards moving, but has a smooth part 24a.This smooth part 24a has a gap greater than other arbitrary portion, and this makes a large amount of air leak and therefore reduces viscous damping force.
Again further, when the lubricant such as grease be arranged on the surface of described damper cap 22 with prevent damper cap 22 and outside between the bucket 12 friction or when interfering, this lubricant has blocked the pore (not shown) on the described damper cap 22.This makes viscous damping (viscousdamping) process steadily not carry out.
Summary of the invention
Therefore, first purpose of the present invention provides a kind of draft hitch that is used for washing machine, this draft hitch can be by keeping air cleft between damping pedestal and the damper cap along circumferentially promoting the damping pedestal with constant force consistently, and can reduce because the reduction of the viscous damping force that the increase in the irregular gap of air cleft causes, the extension spring that wherein has continuous shape is assemblied in damping pedestal below.
Second purpose of the present invention provides a kind of draft hitch that is used for washing machine, and this draft hitch can prevent by the under shed that bottom is assembled to described damper cap because the leakage of a large amount of gases that increase caused of the air cleft between damper cap and the damping pedestal.
The 3rd purpose of the present invention provides a kind of draft hitch that is used for washing machine, and this draft hitch can reduce when lubricated dose of viscous damping force that is occurred when blocking of pore by being formed on pore on the bottom rather than preventing on the damper cap.
The 4th purpose of the present invention provides a kind of draft hitch that is used for washing machine, this draft hitch can be by overlapping in a longitudinal direction and keep the elastic restoring force of extension spring for a long time with the extension spring some parts, and can easily extension spring be assembled on the damping pedestal.
The 5th purpose of the present invention provides a kind of draft hitch that is used for washing machine, this draft hitch can upwards keep the damping pedestal consistently by the extension spring edge is circumferentially contacted described damping pedestal continuously in week wearing and tearing, and therefore can strengthen reliability.
In order to realize these and other advantages of the present invention and,, provide a kind of draft hitch that is used for washing machine that comprise: an end is assembled to the connecting rod of washing machine body as enforcement and broadly described here according to purpose of the present invention; It is mounted thereto that damper cap, the other end of wherein said connecting rod penetrate ground, and this damper cap is installed on the outer bucket; Be installed in the damping spring in the described damper cap; Be assembled to the damping pedestal of damper cap one end, slide and be set to support described connecting rod or described damping spring along the inner circumferential surface of described damper cap; And extension spring, be arranged in described damping pedestal below and be set to the edge of described damping pedestal is extended to the inner surface of described damper cap, wherein this extension spring has continuous circumference.
According to the another one aspect, the described draft hitch that is used for washing machine comprises: an end is assembled to the connecting rod of washing machine machine fuselage; It is mounted thereto that damper cap, the other end of wherein said connecting rod penetrate ground, and this damper cap is assembled on the outer bucket; Be installed in the elastic mechanism in the described damper cap; The damping pedestal is assembled to damper cap one end and is set to support described connecting rod or described elastic mechanism; And extension spring, being arranged in described damping pedestal below and being set to the edge of described damping pedestal is stretched out, the interval between wherein said damper cap and the described damping pedestal is kept in a circumferential direction consistently by described extension spring.
In above-mentioned configuration, described damper cap and the friction along the circumferential direction of damping pedestal can be kept consistently, can reduce the reduction owing to the caused viscous damping force of increase of unbalanced air cleft, and can strengthen durability.
Here, described extension spring is arranged so that its some part can overlap in a longitudinal direction mutually.This makes described extension spring have continuous circumference, and allows all parts of described damping pedestal to stretch out.
Described extension spring is assembled to the recessed channel of the following side that is formed on described damping pedestal.The female groove that is formed on the lower inner surface of described damping pedestal is used to make described extension spring stably to be fitted thereon, and avoids that described extension spring breaks away from from the damping pedestal when the work of described draft hitch.
Here, do not use recessed channel, but can will be used to prevent that retainer that described extension spring breaks away from from described damping pedestal is formed on the bottom of described damping pedestal.
Here, the slit that is used to be convenient to the stretching of described damping pedestal bottom is formed on the bottom of described damping pedestal.By forming described slit, even the bottom of described damping pedestal also can easily be stretched when the extension spring of using has less elastic restoring force.
The two ends of described extension spring all bend towards the center.In order to improve the convenience of installation, at first make described extension spring have the size that reduces by the sweep pressurized, be assembled to the damping pedestal then.
Be used for air-damped pore and can be formed on damper cap.This pore can form and be arranged in a high position, so can avoid this pore to be blocked by the lubricant such as grease.
The draft hitch that is used for washing machine can also comprise the bottom that is assembled to described damper cap downside, and this bottom is set to be used to reduce the leakage rate of the gas in the described damper cap.By bottom being assembled to the lower openings of described damper cap, can fully avoid leaking via the air of the air cleft between described damper cap and the described bottom.Preferably, keep viscous damping force by on described damper cap, forming pore.
Preferably, described bottom and damper cap interconnect by hook spare, but are not limited thereto.Described bottom and described damper cap also can form screw thread by the connecting portion between them and interconnect.
Be used for air-damped pore and can be formed on described bottom.
If stop the air by air cleft to leak by the assembling bottom on damper cap, the viscous damping process is carried out not steadily, and this can cause excessive vibration.Take place for fear of undue oscillation, can on described bottom, form pore.Replacedly, pore can be formed on the bottom rather than on damper cap, thereby avoids pore because the obstruction of the lubricant such as grease.
According on the other hand, the described draft hitch that is used for washing machine comprises: the connecting rod with predetermined length; Damper cap, heart place inserts the part of connecting rod with penetrating therein; The damping pedestal is assembled to an end of described damper cap and is set to support described connecting rod; And extension spring, be arranged in described damping pedestal below and be set to keep consistently air cleft between described damper cap and the damping pedestal, and therefore increase viscous damping force by the air of revealing from described air cleft.
Here, described extension spring contacts the downside surface of described damping pedestal continuously.Therefore, even the bottom of described damping pedestal and described damper cap have had friction and be worn, the degree of the wearing and tearing of this bottom is also low than other any positions.
Be used to prevent that the bottom that the gas in the described damper cap leaks is assemblied in described damper cap below.The pore that is used for viscous damping is formed on damper cap or bottom place, or is formed on them on both.
By above-mentioned configuration, prevented because the reduction of the viscous damping force that the air in the described damper cap causes.
In the present invention, the extension spring with contiguous circumferential is assembled to described damping pedestal, therefore, maintains the air cleft gap equably between described damping pedestal and the described damper cap, and prevents because the reduction of the caused viscous damping force of special part excessive wear.
In the present invention, prevented because the increase in the air cleft gap that causes with respect to the wearing and tearing of described damper cap slidably described damping pedestal, thereby prolonged life-span of the described draft hitch that is used for washing machine.
In the present invention, additional bottom is assemblied in the opening of described damper cap, thereby even the air cleft between described damper cap and described damping pedestal has also prevented the reduction of viscous damping force when increasing.
The present invention also provides a kind of draft hitch that is used for washing machine, it can prevent that wherein the lubricant that the pore on the described bottom is placed on the described damper cap from blocking by form the reduction that additional pore prevents viscous damping force on the bottom that is assemblied in the damper cap downside.
The present invention also provides a kind of draft hitch that is used for washing machine, by forming extension spring so that its some part can overlap on circumferencial direction or longitudinal direction mutually, perhaps by forming sweep and can keep the elastic restoring force of described extension spring for a long time in described extension spring, described draft hitch can increase productivity.
The present invention also provides a kind of draft hitch that is used for washing machine, even used washing machine for a long time, and excessive vibration caused when this draft hitch also can reduce owing to the dehydration process large amplitude or noise.
By the detailed description of the invention that hereinafter combines, can be more clearly visible above-mentioned and other purposes, characteristics, aspect and advantage of the present invention with accompanying drawing.
Description of drawings
The included accompanying drawing of the present invention provides further understanding of the present invention, and with the incorporated formation of an accompanying drawing part of the present invention, shows the embodiment of the invention and be used for explaining principle of the present invention with specification.
In the accompanying drawings:
Fig. 1 is the schematic cross-section according to the washing machine of correlation technique;
Fig. 2 is the schematic cross-section according to the draft hitch that is used for washing machine of correlation technique;
Fig. 3 is the upward view that is used for the draft hitch of washing machine among Fig. 2;
Fig. 4 is the schematic cross-section that is used for the draft hitch of washing machine according to an embodiment of the invention;
Fig. 5 is the perspective view of damping pedestal that is used for the draft hitch of washing machine among Fig. 4;
Fig. 6 A is the view of the extension spring of the draft hitch that is used for washing machine in the presentation graphs 4 respectively to 6C;
Fig. 7 A is the view of extension spring of representing to be used for according to another embodiment of the present invention the draft hitch of washing machine respectively to 7C;
Fig. 8 shows the schematic cross-section of the modification example of the draft hitch that is used for washing machine among Fig. 4;
Fig. 9 is a Test Drawing, has contrasted the damping force of traditional draft hitch that is used for washing machine and Fig. 4 according to the damping force that is used for the draft hitch of washing machine of the present invention; And
Figure 10 and 11 is Test Drawings, has contrasted the excessive level and the vertical vibrating of the outer bucket of the conventional washer of having used draft hitch 20 and the washing machine of the present invention of having used the draft hitch 200 among Fig. 4 respectively.
The specific embodiment
Introduce the preferred embodiments of the present invention now in detail, the example has been shown in the accompanying drawing.
Below, introduce the structure and the operation of washing machine according to an embodiment of the invention with reference to the accompanying drawings in more detail.
The explanation of known configurations or function will be omitted.Identical Reference numeral represents and identical parts of parts in the aforementioned structure, and omits the detailed introduction to them.
Fig. 4 is the schematic cross-section that is used for the draft hitch of washing machine according to an embodiment of the invention, and Fig. 5 is the perspective view of damping pedestal of draft hitch that is used for the washing machine of Fig. 4.
Washing machine according to the present invention has same structure with traditional washing machine 1 except that draft hitch 200.Therefore, omitted the explanation of the same structure except that draft hitch 200 among the present invention.
Shown in Figure 4 and 5, the draft hitch 200 that is used for washing machine according to an embodiment of the invention comprises: connecting rod 210; Damper cap 220, an end of connecting rod 210 forms thereon with penetrating; Be installed in the damping spring 230 in the described damper cap 220; The damping pedestal is configured to support an end that is installed in the described connecting rod 210 on the described damper cap 220 with penetrating; Be assemblied in the extension spring 260 of the downside of described damping pedestal 240; And the bottom 250 that is assembled to the downside of described damper cap 220.
Stretch upwards as the top of described damper cap 220 such as the bottleneck, and this stretches upwards part and surrounds described connecting rod 210.
Described connecting rod 210 is placed in the described damper cap 220 by the through hole 222 that is formed on described damper cap 220 tops.One end of described through hole 222 extend in the described damper cap 220, thereby is configured to surround and support the connecting rod support portion 223 of described connecting rod 210.
One end of described connecting rod 210 is fixed to the connecting rod fixed part 245 of described damping pedestal 240.Preferably, described connecting rod fixed part 245 stretches out from the upside of described damping pedestal 240, and has predetermined altitude stably to support described connecting rod 210.
A plurality of projections 246 are formed on the external peripheral surface of described connecting rod fixed part 245.Described a plurality of projection 246 is inserted the inner circumferential surface of described damping spring 230 forcibly, thereby firmly supports described damping spring 230.
The lower end of described damping spring 230 is supported by the lip-deep projection 246 of described connecting rod fixed part 245, and the upper end of described damping spring 230 is supported by the spring support portion on the inner surface that is formed on described damper cap 220 224.
In initial state, just, supply water in not giving washing machine or put into the state of clothing, described damping spring 230 is preferably kept compressive state, and the damping pedestal 240 that is used to support described damping spring 230 is placed in the inboard of the lower end of described damper cap 220.Reason is as follows, in case clothing or slurry are encased among interior bucket 13 (referring to Fig. 1), because the weight of described clothing or slurry, described damping spring 230 stretches, and damping pedestal 240 moves to the downside of damper cap 220.Here, if described damping pedestal 240 is positioned at the end of described damper cap 220, then clothing or the like is encased in the described interior bucket 13, and described damping pedestal 240 also can separate fully with described damper cap 220.
Here, described damping spring 230 is compression disc spring preferably, but is not limited thereto.As damping spring 230, any have elastic restoring force and be configured to absorb or weaken the elastic device that vibrates and can adopt.For example, rubber parts can be used for connecting an end of described connecting rod 210 and the connecting rod fixed part 245 of described damping pedestal 240.The rubber column (not shown) that has cavity equally, therein can be used as damping spring 230.When damping spring 230 used as elastic device, an end that is placed in the described connecting rod 210 in the damper cap 220 preferably was placed in the described damping spring 230.
Pore 221 is formed on the top of described damper cap 220, carries out owing to be positioned at the caused viscous damping process of air of described damper cap 220 by pore.Between the outmost circumferential surface of the inner surface of described damper cap 220 and described damping pedestal 240, form small air cleft 223.Produce the frictional damping process by described air cleft 223.
Described bottom 250 can be assemblied in the lower openings of described damper cap 220.Described bottom 250 connects by hook spare (not shown) and the described damper cap 220 that is formed on the described damper cap 220, to hold described damping pedestal 240 therein.In order to ensure the sealing state in the described damper cap 220, described damper cap 220 and described bottom 250 can form screw thread by the connecting portion between them and be interconnected with one another.
The described damping pedestal 240 of 5 more detailed descriptions with reference to the accompanying drawings.
The connecting rod fixed part 245 that is connected to an end of described connecting rod 210 is formed on described damping pedestal 240 tops, and a plurality of projection 246 is arranged on the external peripheral surface of described connecting rod fixed part 245.Spring support portion 247 is integrally formed in described connecting rod fixed part 245 belows.Preferably, described spring support portion 247 is shaped to the shape of wide video disc, with the described damping spring 230 of abundant support.
A plurality of slits 242 are formed on described skirt section 243 along short transverse, and extension spring 260 is assembled to the inner surface in described skirt section 243.Here, separate with described skirt section 243 for fear of described extension spring 260, the inner surface in described skirt section 243 is formed with recessed channel 244 or lock pawl 241.
Because described extension spring 260 be assembled to described skirt section divide 243 and its diameter reduce than initial diameter, so it has the elastic restoring force that will revert to original diameter.Because described elastic restoring force, the edge of described damping pedestal 240 extends to the inner surface of described damper cap 220.That is to say that described skirt section 243 is pushed into described damper cap 220 thereby is extended.
Here, described skirt section 243 can have big ductility by having a plurality of slits 242.Described skirt section 243 can stretch out, even the extension spring 260 by having less elastic restoring force.
Described lock pawl 241 or slit 242, the size that perhaps described lock pawl 241 and described slit 242 boths can be by considering described damping pedestal 240 or elastic force of described extension spring 260 etc. form.
Described extension spring 260 must be provided with continuous circumference.With reference to the accompanying drawings 6 and Fig. 7 be described in more detail described extension spring 260.
Fig. 6 A is the view that has shown the extension spring of the draft hitch that is used for washing machine among Fig. 4 respectively to 6C, and Fig. 7 A is the view of representing the extension spring of the draft hitch that is used for washing machine according to another embodiment of the present invention respectively to 7C.
When the front is watched, the extension spring 260 that is used for the draft hitch of washing machine according to an embodiment of the invention is the annulars (referring to Fig. 6 B) with contiguous circumferential, and when watching from the side, some part of described extension spring 260 overlap each other in a longitudinal direction (referring to Fig. 6 C).That is to say that described extension spring 260 is wound into and makes the overlapped predetermined length in its two ends.
Here, bend 260a and 260b are formed on the two ends of described extension spring 260, towards the center of described extension spring 260.Described bend 260a and 260b are used for described extension spring 260 is assembled to damping pedestal 240.When described bend 260a and 260b were extruded in both sides, the diameter of a side of described extension spring 260 reduced to allow described extension spring 260 easily to be assembled on the described damping pedestal 240.Then, when described bend 260a and 260b release, described extension spring 260 returns to original state.Simultaneously, described skirt section 243 stretches out.
As shown in Figure 6A, because the continuous circumference of described extension spring 260, described extension spring 260 contacts the downside surface of described damping pedestal 240 continuously, just, and described skirt section 243.That is to say that all parts of described extension spring 260 all contact with described skirt section 243.Thereby the air cleft 223 between described damper cap 220 and described damping pedestal 240 is kept by consistent along the circumferencial direction of described extension spring 260, thereby prevents the uneven gap of air cleft 223.
The described extension spring 260 that has contiguous circumferential when use is even with the inner surface friction of described damper cap 220 time, also avoided the described skirt section 243 of described damping pedestal 240 to be worn and torn flatly.
One end of the described connecting rod 210 of self-explantory reference marker " 211 " expression.
Fig. 7 A is the view of representing the extension spring of the draft hitch that is used for washing machine according to another embodiment of the present invention respectively to 7C.
When the front is watched, extension spring 261 is the annulars (referring to Fig. 7 B) with contiguous circumferential, when watching from the side, and the some parts of described extension spring 261 overlap each other in a longitudinal direction (referring to Fig. 7 C).
Owing to have lap, described extension spring 261 can continue its elastic restoring force for a long time, and can easily be assembled to skirt section 243.That is to say that the heart partly is compressed in case the user is held in described extension spring 261 therein, the diameter of a side of described extension spring 261 reduces to allow described extension spring 261 easily to be assembled to described skirt section 243.
Described extension spring 261 among Fig. 7 has the shape identical with the extension spring 260 among Fig. 6, except be formed on the two ends of described extension spring 260 at the 260a of sweep described in Fig. 6 and 260b.Therefore, can use identical moulding masterplate to make described extension spring 260 and 261.More specifically, can be by the moulding masterplate of the extension spring 261 among Fig. 7 and the extension spring 260 in the shop drawings 6 by forming two sweeps or the like at two ends subsequently with pressing mode.Therefore, a kind of moulding masterplate can be used to make two kinds of extension springs, and this can enhance productivity.
Fig. 8 be used among Fig. 4 washing machine draft hitch the sectional view of modification example.
The draft hitch 200 ' among Fig. 8 and the difference of the draft hitch 200 among Fig. 4 are that pore 251 is formed on the bottom 250 '.
According to the described draft hitch 200 among Fig. 4, described bottom 250 is assemblied in the downside of described damper cap 220, but pore is not formed on the described bottom 250.This makes the air that passes air cleft 223 leak and is avoided, and still causes the air in the described damper cap 220 to be difficult to discharge, and this can not reduce undue oscillation.In order to address this problem, described pore 251 can be formed on the bottom 250 '.
The pore 251 of described bottom 250 ' basically forms on the lower surface of described draft hitch 200 '.Therefore, even the lubricant such as grease that is arranged on the described damper cap 220 flows down, this pore 251 can not get clogged yet.
When described pore 251 is formed on the bottom 250 ', preferably do not form the pore 221 of lubricated dose of obstruction in described damper cap 220.But when the described pore 251 from described damper cap 250 ' can not obtain sufficient viscous damping force, it also was effective forming pore 221 on described damper cap 220.In this case, for fear of the lubricant obstruction of pore 221 quilts such as grease of described damper cap 220, this pore 221 is formed on upside.
In order to leak the undue oscillation that the viscous damping force that produces reduces washing machine by utilizing by air, can form the pore 221 of described damper cap 220, or the pore 251 of described bottom 250 ', perhaps they both.Must be in the capacity of having considered described washing machine and dehydration be during process bucket rotating speed or the like and make one's options aspect the vibration.
By using each described draft hitch 200 and 200 ', the air cleft 223 between described damper cap 220 and each damping pedestal 250 and 250 ' can be kept consistently.This makes by the viscous damping force increase of the air leakage of air cleft 223.
In the present invention, viscous damping force can be enhanced the twice of traditional suspension device 20 (referring to Fig. 1) or more.In this makes the undue oscillation of bucket 13 (referring to Fig. 1) improved conventional washer 30% or more than 30%.Hereinafter, referring to test data, the function of described draft hitch according to an embodiment of the invention and the function of traditional suspension device are compared.
Fig. 9 is the trial curve figure that has represented according to the amplitude (mm) of time (second).Referring to Fig. 9, traditional suspension device 20 has shown 0.32 damping coefficient (ζ), yet draft hitch 200 according to an embodiment of the invention has shown 0.74 damping coefficient (ζ).Damping coefficient (ζ) has represented that this can be used to represent to prevent the indication of object vibration by the ratio that successively decreases of the function of coordinate or time representation.
It is many more that on behalf of damping function, big more damping coefficient be enhanced ground.Therefore, the damping action that can infer draft hitch 200 according to an embodiment of the invention be increased traditional suspension device 20 damping action about twice or more than twice.
Figure 10 is the trial curve figure that has compared outer barrel excessive level vibration of the conventional washer of using draft hitch 20 and the washing machine of the present invention that has used the draft hitch 200 among Fig. 4.And Figure 11 is the trial curve figure that has compared outer barrel excessive vertical vibrating of the conventional washer of using draft hitch 20 and the washing machine of the present invention that has used the draft hitch 200 among Fig. 4.
Referring to Figure 10, the horizontal axis of curve map represents that the directions X on the top of described outer bucket 12 vibrates and the directions X vibration and the Y direction of the bottom of vibration of Y direction and described outer bucket 12 are vibrated, and vertical axis is represented amplitude (mm).The graphical representation of Figure 10 according to the minimizing in whole amplitude ratio conventional arts of each horizontal vibration of the present invention 1mm to 8.8mm.
Referring to Figure 11, the horizontal axis of curve map has been represented each Z direction vibration of the upper and lower of described outer bucket 12, and vertical axis is represented amplitude (mm).The graphical representation of Figure 11 according to the minimizing of whole amplitude ratio conventional arts of each vertical vibrating of the present invention 2.5mm to 2.8mm.
As previously mentioned, when using according to draft hitch 200 of the present invention and 200 ', undue oscillation has reduced the about 30% of the maximum rating in the conventional art, and described air cleft gap can keep by homogeneous.
Up to the present, the application who makes an explanation with regard to draft hitch is applied to washing machine, but described draft hitch also can be applied to such as can with dryer, the multiple field of washing machine of drying machine or combination washing system compatibility and so on.
The foregoing description and advantage only are exemplary, they should be interpreted as restriction the present invention.The present invention can also easily be used for the device of other types.This specification should be illustrative, does not limit the protection domain of claim.A lot of conspicuous replacements, modifications and variations are arranged to those skilled in the art.Feature, structure, method and other characteristics of the exemplary embodiment that this place is introduced can be through a lot of mode combinations, obtain other and/or alternative embodiment.
Owing under the prerequisite that does not depart from its characteristic range, can realize these features with many forms, therefore be to be understood that, the foregoing description is not limited to any details in the above stated specification, except as otherwise noted, otherwise should explain these embodiment in the claims restricted portion widely, interior all changes and the modification of equivalent that therefore falls into claim boundary and scope or these boundaries and scope all will be contained by claims.
Claims (9)
1. draft hitch that is used for washing machine comprises:
Connecting rod, the one end is assembled to washing machine body;
Damper cap, the other end of described connecting rod are installed on this damper cap with penetrating, and described damper cap is installed to outer bucket;
Bottom, this bottom are assemblied in the downside of described damper cap and are set to reduce the interior leakage of air amount of described damper cap;
Elastic device is installed in the described damper cap;
The damping pedestal is assembled to described damper cap and is set to support described connecting rod or described elastic device; And
Extension spring is arranged in described damping pedestal below and is set to the edge of described damping pedestal is stretched out,
Wherein, the interval between described damper cap and the described damping pedestal is kept consistently by described extension spring in a circumferential direction.
2. the draft hitch that is used for washing machine as claimed in claim 1, wherein said elastic device is a damping spring.
3. the draft hitch that is used for washing machine as claimed in claim 1 or 2, wherein said extension spring are configured such that the some parts of this extension spring is overlapped.
4. the draft hitch that is used for washing machine as claimed in claim 1 or 2, wherein said extension spring is assembled to the recessed channel of the downside that is formed on described damping pedestal.
5. the draft hitch that is used for washing machine as claimed in claim 1 or 2, the slit that wherein is used to prevent the lock pawl that described extension spring breaks away from or is used to extend the downside of described damping pedestal is formed on the downside of described damping pedestal.
6. the draft hitch that is used for washing machine as claimed in claim 1 or 2, the two ends of wherein said extension spring are towards center curvature.
7. the draft hitch that is used for washing machine as claimed in claim 1 or 2 wherein is used for air-damped pore and is formed at described damper cap.
8. the draft hitch that is used for washing machine as claimed in claim 1, wherein said bottom and described damper cap connect each other by hook spare.
9. the draft hitch that is used for washing machine as claimed in claim 1 wherein is used for air-damped pore and is formed at described bottom.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2007-0076581 | 2007-07-30 | ||
| KR1020070076581A KR100879570B1 (en) | 2007-07-30 | 2007-07-30 | Suspension apparatus for washing machine |
| KR1020070076581 | 2007-07-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101387061A CN101387061A (en) | 2009-03-18 |
| CN101387061B true CN101387061B (en) | 2011-08-17 |
Family
ID=40336855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101756523A Expired - Fee Related CN101387061B (en) | 2007-07-30 | 2008-07-30 | Suspension apparatus for washing machine |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20090031762A1 (en) |
| KR (1) | KR100879570B1 (en) |
| CN (1) | CN101387061B (en) |
| AU (1) | AU2008203386B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10081898B2 (en) * | 2010-04-30 | 2018-09-25 | Lg Electronics Inc. | Laundry apparatus |
| CN102345218B (en) * | 2010-08-03 | 2015-11-25 | 海尔集团公司 | A kind of small/micro impeller type washing machine |
| CN102373600B (en) * | 2010-08-06 | 2015-11-25 | 海尔集团公司 | A kind of slip damping device of small/micro impeller type washing machine |
| US9297104B2 (en) * | 2012-01-25 | 2016-03-29 | Illinois Tool Works Inc. | Washing machine suspension ball support |
| CN103243520B (en) * | 2013-04-17 | 2016-01-13 | 无锡小天鹅股份有限公司 | For washing machine damping device and there is its washing machine |
| KR102133190B1 (en) | 2013-11-04 | 2020-07-13 | 엘지전자 주식회사 | Washing machine and method of manufacturing the same |
| CN112144230B (en) * | 2019-06-11 | 2024-03-22 | 青岛海尔洗衣机有限公司 | Laundry treating apparatus and control method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990035036U (en) * | 1999-05-28 | 1999-09-06 | 이용철 | device for preventing vibration of automatic washer |
| JP2002200393A (en) * | 2001-01-09 | 2002-07-16 | Hitachi Ltd | Vibration control device for washing machine |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0399697A (en) * | 1989-09-14 | 1991-04-24 | Matsushita Electric Ind Co Ltd | Automatic washing machine |
| JP3101519B2 (en) * | 1995-02-03 | 2000-10-23 | 三洋電機株式会社 | Dehydration washing machine |
| JPH0924185A (en) * | 1995-07-13 | 1997-01-28 | Toshiba Corp | Completely automatic washing machine |
| JPH10151295A (en) * | 1996-11-25 | 1998-06-09 | Hitachi Ltd | Electric washing machine |
| US6009730A (en) * | 1997-05-20 | 2000-01-04 | L G Electronics, Inc. | Damper assembly in washing machine |
| JPH1176681A (en) * | 1997-08-31 | 1999-03-23 | Hitachi Ltd | Fully automatic washing machine |
| KR100273405B1 (en) * | 1998-03-10 | 2000-12-15 | 구자홍 | Washing machine damper |
| KR100272587B1 (en) * | 1998-03-14 | 2000-12-01 | 구자홍 | Suspension in washing machine |
| JP2001170390A (en) * | 1999-12-16 | 2001-06-26 | Hitachi Ltd | Dehydrating washing machine |
| JP2002200392A (en) * | 2001-01-09 | 2002-07-16 | Hitachi Ltd | Vibration control device for washing machine |
-
2007
- 2007-07-30 KR KR1020070076581A patent/KR100879570B1/en not_active IP Right Cessation
-
2008
- 2008-07-28 US US12/181,089 patent/US20090031762A1/en not_active Abandoned
- 2008-07-29 AU AU2008203386A patent/AU2008203386B2/en not_active Ceased
- 2008-07-30 CN CN2008101756523A patent/CN101387061B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990035036U (en) * | 1999-05-28 | 1999-09-06 | 이용철 | device for preventing vibration of automatic washer |
| JP2002200393A (en) * | 2001-01-09 | 2002-07-16 | Hitachi Ltd | Vibration control device for washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101387061A (en) | 2009-03-18 |
| AU2008203386A1 (en) | 2009-02-19 |
| KR100879570B1 (en) | 2009-01-22 |
| US20090031762A1 (en) | 2009-02-05 |
| AU2008203386B2 (en) | 2010-12-02 |
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