CN109306600A - A kind of washing machine anticollision barrel and washing machine - Google Patents
A kind of washing machine anticollision barrel and washing machine Download PDFInfo
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- CN109306600A CN109306600A CN201710632488.3A CN201710632488A CN109306600A CN 109306600 A CN109306600 A CN 109306600A CN 201710632488 A CN201710632488 A CN 201710632488A CN 109306600 A CN109306600 A CN 109306600A
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- guide rod
- washing machine
- guide sleeve
- anticollision
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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
-
- 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
- D06F37/26—Casings; Tubs
- D06F37/265—Counterweights mounted to the tub; Mountings therefor
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
The present invention provides a kind of washing machine anticollision barrel and washing machines, the anticollision barrel includes guide sleeve and the guide rod inside the guide sleeve is protruded into one end, the inside of the guide sleeve is equipped with the damping fin for cooperating with guide rod and generating damping force, the guide rod has the unloaded section at middle part and the active section positioned at unloaded section both ends, the diameter of the zero load section is less than the internal diameter of the damping fin, and the diameter of the active section is greater than the internal diameter of the damping fin；By being equipped with unloaded section and active section, realizes and variable damping force is provided, when outer cylinder vibration is larger, anticollision barrel gives enough damping forces, and outer cylinder is avoided to hit case；And in washing machine outer cylinder in the safe amplitude of stable operation, anticollision barrel gives lesser damping force or does not give damping force；It will not increase due to the vibration being transmitted on cabinet when can prevent washing machine from hitting case problem and high speed dewatering in low speed dehydration in this way and total noise of centrifuge is caused to increase.
Description
Technical field
The invention belongs to washing machine technology fields, and in particular to a kind of washing machine anticollision barrel and have the anticollision
The washing machine of barrel.
Background technique
Washing machine vibration damping mainly hangs outer barrel in washing machine by hanging on the sunpender of washing machine corner location at present,
In washing and dehydration, interior outer barrel is all to reduce vibration by compression sunpender, and sunpender is consumed inside and outside by the damping of itself
The vibration of cylinder.But the use of sunpender can only buffer the vibration of vertical direction, can not reduce oscillation crosswise, cause under large eccentricity
Case is hit, the volumetric ratio and starting ability of washing machine are influenced.
In rotary drum washing machine dehydration, revolving speed by zero be increased to always 700 turns it is even higher.Caused by clothing is uneven
Eccentric load is increased with revolving speed and is gradually increased, and the corresponding exciting force fundamental frequency of eccentric load is increased to more than ten hertz by zero.And wave
Wheel washer there are apparent natural mode of vibration, when washing machine revolving speed passes through its modal frequency, can cause generally near 1 ~ 3Hz
There is covibration in washing machine.If the covibration of washing machine cannot be controlled preferably, it will lead to washing machine and occur hitting case very
To damage.
In order to solve the problems, such as that washing machine hits case, spring is fixed on outer cylinder and cabinet in patent CN201020229971.0
Between, restoring force is provided.When resonating there are biggish displacement between outer cylinder and cabinet, cause to connect outer cylinder and cabinet it
Between spring be stretched or compress and generate restoring force, reduce the displacement between outer cylinder and cabinet, prevent vibration of washing machine mistake
It leads to the problem of greatly and hits case.But reaches stabilized (steady-state) speed when washing machine revolving speed is more than its corresponding modal frequency and be normally dehydrated work
When making, which can be transmitted to the vibration on outer cylinder on cabinet, lead to casing of washing machine vibration sounding, and total noise of centrifuge increases.
Summary of the invention
The present invention is directed to the above-mentioned problems in the prior art, provides a kind of washing machine anticollision barrel, can prevent
Washing machine hits case problem when low speed is dehydrated, and can guarantee will not be since the vibration being transmitted on cabinet increases when high speed dewatering
Total noise of centrifuge is caused to increase greatly.
To reach above-mentioned technical purpose, the present invention is implemented with the following technical solutions:
A kind of washing machine anticollision barrel protrudes into the guide rod inside the guide sleeve including guide sleeve and one end, described to lead
To the inside of set be equipped with guide rod cooperate generate damping force damping fin, the guide rod have middle part unloaded section and
The diameter of active section positioned at unloaded section both ends, the zero load section is less than the internal diameter of the damping fin, the diameter of the active section
Greater than the internal diameter of the damping fin；In washing machine stable operation, the zero load section is located at the damping fin；Outside washing machine
When cylinder vibration is larger, the active section is located at the damping fin.
Further, have cylindrical main active section and setting in the unloaded section and main work in the active section
Make the reducer between section, the diameter in any section of the reducer be respectively positioned on the unloaded section diameter and active section diameter it
Between.
Further, the guide rod also has the cut-off section extended along the active section to end, the guide rod phase
For guide sleeve stretching motion, the relative motion both when the cut-off section of the guide rod moves near the damping fin stops
Only.
Further, the guide sleeve is tubular structure open at one end, and the damping fin is located at opening for the guide sleeve
The other end of the inside at mouth end, the guide sleeve is equipped with the first articulated section.
Further, the guide rod is with hollow stem open at one end, and open end is located in guide sleeve, described to lead
The second articulated section is equipped with to the other end of bar.
Further, it is equipped with cutting ferrule between the damping fin and guide sleeve, is opened up on the inside of the open end of the guide sleeve
There is the first notch of annular, the cutting ferrule is located at the first notch；The second notch, the resistance are offered on the inside of the cutting ferrule
Buddhist nun's piece is located at the second notch and contacts with the longitudinal edge of the first notch.
Further, the end of the cutting ferrule is additionally provided with the gear edge extended radially outward, and the gear is led along positioned at described
To the end of set open end.
Further, the external circumferential of the cutting ferrule is placed at least two buckles, offered on first notch with
The card slot that the buckle matches, it is described to be fixed in the card slot.
Further, venthole is offered on the jacket wall of the opposite one end in the guide sleeve open end.
Based on above-mentioned washing machine anticollision barrel, the present invention also provides a kind of design method of above-mentioned anticollision barrel,
The design method includes the following steps:
A. according to the parameter of the washing machine itself, maximum eccentric power Fe when laundry machine dehydration is determined；And then determine Anti-collision barrel
The damping force F of deviceD, finally determine the interference spacing d between the active section and damping fin of guide rodc；
B, according to interference spacing dc, in the active section maximum gauge φ of the guide rodwWith damping fin internal diameter φcIn, according to φw=
φc+2dc, after the size for selecting one of them, the size of another can be calculated；
C. according to damping fin internal diameter φC,Determine guide rod zero load section diameter phiz；
D. according to laundry machine dehydration stable operation stage outer cylinder displacement amplitude dO, determine the length L of guide rod zero load sectionz；
E. according to the length L of guide rod zero load sectionzAnd the minimum spacing L between outer cylinder and cabinetMax, determine guide rod work
Make segment length Lw；
F. according to the major parameter of anticollision barrel in above-mentioned steps, the anticollision barrel for the machine design is obtained.
Further, in step, eccentric mass m is started according to laundry machine dehydratione, inner tank of washing machine diameter r1And
The highest resonant frequency f of low frequency rigid body modePMax, calculate eccentric force Fe=m when laundry machine dehydratione*(2πfPMax)2rI。
Further, also there is step A1 to determine anticollision box equilibrant force F according to eccentric force Fe in stepC=s1Fe；Its
Middle s1For safety coefficient.
Preferably, 0.1 < s1<3。
Further, also there is the step A2 being located at after step A1 in step, according to anticollision box equilibrant force FC, with
And plan the quantity N of the anticollision barrel of setting on washing machine, the damping force for calculating each anticollision barrel is FD；Damping force
FD=2FC/N。
Further, also there is the step A3 being located at after step A2 in step, according to the damping force of anticollision barrel
For FDAnd the coefficient of friction c for the damping fin selected, determine the normal pressure F between the active section of guide rod and damping finN=FD/c。
Further, also there is the step A4 being located at after step A3 in step, according to normal pressure FNAnd it is described
The equivalent stiffness k of damping finc, determine the interference spacing d between the active section and damping fin of the guide rodc=FN/kc。
Further, in step C, guide rod zero load section diameter phiz=s3φc, wherein s3For safety coefficient, 0.3 < s3≤
1。
Further, in step D, the length L of guide rod zero load sectionz=2s4dO, wherein s4For safety coefficient, s4>1。
Preferably, 1 < s4<3。
Further, in step E, guide rod length of work segment Lw=s5LMax-Lz/ 2, wherein s5For safety coefficient, 0.2
<s5<1。
Further, the active section maximum gauge φ of the guide rodwWith the unloaded section diameter phizBetween have frustum
Shape changeover portion.
Further, the active section maximum gauge φ of the guide rodwWith the unloaded section diameter phizBetween have cambered surface
The diameter of shape changeover portion, any cross section of the arc surfaced changeover portion is respectively positioned on the active section maximum gauge of the guide rod
φwWith unloaded section diameter phizBetween.
Further, the active section maximum gauge φ of the guide rodwWith the unloaded section diameter phizBetween at least have
One section of cylindrical transition section, the diameter of the cylindrical transition section are located at the active section maximum gauge φ of the guide rodwWith sky
Carry section diameter phizBetween.
Based on above-mentioned washing machine anticollision barrel, the present invention also provides a kind of washing machine with the anticollision barrel,
It can prevent washing machine will not be due to being transmitted on cabinet when hitting case problem and high speed dewatering in low speed dehydration
Vibration increase and cause total noise of centrifuge to increase.
A kind of washing machine including cabinet and is located in the box body the outer cylinder and inner cylinder that are set with and are arranged, and the outer cylinder passes through
Sunpender is lifted on the cabinet, any between the two equipped with above-mentioned Anti-collision barrel in the outer cylinder, cabinet, sunpender three
Device.
Anticollision barrel provided by the invention has for providing the damping force of horizontal direction by the way that the guide rod is arranged
There are the unloaded section at middle part and the active section positioned at unloaded section both ends, realize and variable damping force is provided, is vibrated in outer cylinder larger
When, anticollision barrel gives enough damping forces, and outer cylinder is avoided to hit case；And it shakes in washing machine outer cylinder in the safety of stable operation
In width, anticollision barrel gives lesser damping force or does not give damping force；In this way in washing machine stable operation, the zero load
Section is located at the damping fin；When the vibration of washing machine outer cylinder is larger, the active section is located at the damping fin；In this way can
Prevent washing machine from hitting case problem in low speed dehydration, and can guarantee when high speed dewatering will not be due to the vibration that is transmitted on cabinet
It moves and increases and total noise of centrifuge is caused to increase.
After a specific embodiment of the invention is read in conjunction with the figure, the other features and advantages of the invention will become more clear
Chu.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of anticollision barrel proposed by the invention；
Fig. 2 is the schematic cross-sectional view of Fig. 1；
Fig. 3 is the amplification explosive view in Fig. 2 at damping fin；
Fig. 4 is the structural schematic diagram of damper rod in Fig. 2；
Fig. 5 is the washing machine equipped with anticollision barrel in Fig. 1；
Fig. 6 is the flow chart of the design method of anticollision barrel；
Fig. 7 is a kind of concrete structure schematic diagram of guide rod.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.
In the description of the present invention, it should be noted that the side of the instructions such as term "inner", "upper", "lower", "left", "right"
Position or positional relationship are positional relationship based on the figure, are merely for convenience of description of the present invention and simplification of the description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is interpreted as limitation of the present invention.In addition, term " first ", " second ", " third " are used for description purposes only, and should not be understood as
Indication or suggestion relative importance.
- Fig. 7 refering to fig. 1, is one embodiment of anticollision barrel proposed by the invention, washing machine include cabinet 10,
The outer cylinder 20 and inner cylinder 30 of suit setting in cabinet 10 are set, and outer cylinder 20 is lifted on cabinet 10 4 by four sunpenders 40
On the gusset in corner；Washing machine hit case occur mainly in dehydration startup stage, when the corresponding exciting force fundamental frequency of washing machine revolving speed with
When the shared frequency of interior outer barrel machine sunpender composition system is close, inner/outer tube resonates, and 20 amplitude of outer cylinder significantly increases, to lead
It causes outer cylinder 20 to collide cabinet, hits case.Hit bucket in order to prevent, be equipped on washing machine at least two be oppositely arranged it is anti-
Barrel 50 is hit, for providing the damping force of horizontal direction；Anticollision barrel 50 is arranged in cabinet 10, outer cylinder 20, sunpender 40 3
In person wherein between the two, be preferably located between cabinet 10 and outer cylinder 20, due to opposing stationary, the Ke Yiti of cabinet 10
It avoids hitting bucket for more effective damping force.
In the present embodiment, anticollision barrel 50 includes guide rod 1 and the guide sleeve 3 being sleeved on the outside of guide rod 1,
The inside of guide sleeve 3 be equipped with guide rod 1 cooperate generate damping force damping fin 2, guide rod 1 have middle part unloaded section 12,
And the active section 11 positioned at unloaded 12 both ends of section, wherein the diameter of unloaded section 12 is less than the internal diameter of damping fin 2, active section 11
Diameter is greater than the internal diameter of damping fin 2.
In the present embodiment, by generating damping force between guide rod 1 and damping fin 2, avoid hitting bucket；Pass through guide rod
1 has unloaded section 12 and active section 11, and in washing machine stable operation, unloaded section 12 is located at damping fin 2, that is, is doing washing
Machine outer cylinder 20 in the safe amplitude of stable operation, give lesser damping force or do not give damping force by anticollision barrel, thus
Vibration on outer cylinder 20 cannot be transmitted on cabinet 10 by anticollision barrel 50, avoid the increase of noise；Outside washing machine
When cylinder vibration is larger, there is the risk for hitting bucket, the flexible amplitude of guide rod 1 is also bigger at this time, and active section 12 is located at damping fin 2
Place generates the damping force for preventing outer cylinder 20 from vibrating at this time and avoids hitting bucket so that the Oscillation Amplitude of outer cylinder 20 reduces；It is namely anti-
Hitting the offer of barrel 50 is variable damping power, and the needs of anticollision barrel 50 can prevent washing machine from hitting case in low speed dehydration
Problem, but can guarantee will not cause total noise of centrifuge to increase when high speed dewatering since the vibration being transmitted on cabinet increases.
Shown in Figure 4 in the present embodiment, unloaded section 12 is cylinder, and active section 11 has cylindrical main active section
111 and the reducer 112 that is arranged between unloaded section 12 and main active section 111, diameter is greater than damping on certain reducer 112
The part of the internal diameter of piece 2 contacts with damping fin 2 and generates damping force；Reducer 112 is taper type, that is to say, that reducer 112
Bus be to connect the inclined straight line in one end between unloaded section 12 and main active section 111, the diameter in any section of reducer 112
It is respectively positioned between the diameter of unloaded section 12 and the diameter of main active section 111.Logical setting reducer 112 makes guide rod 1 flexible
Movement be can the smoothly transition between unloaded section 12 and active section 11, when reducer 112 is by damping fin 2, reducer 112
Damping force between damping fin 2 gradually changes.
In the present embodiment, guide rod 1 also has the cut-off section 13 extended along active section 11 to end, ends the diameter of section 13
Certainly it is greater than the diameter of active section 11, guide rod 1 is relative to 3 stretching motion of guide sleeve, when the cut-off section 14 of guide rod 1 moves to
Relative motion both when near damping fin 2 stops.It can be detached from guide sleeve 3 to avoid guide rod 1 by setting cut-off section 13, together
When only when the amplitude of outer cylinder 20 is larger, cut-off section 13 may also be moved near damping fin 2, at this time guide rod 1 and guiding
Set 3 it is opposing stationary, that is, both form the entirety of a rigidity, the prevention power of the rigidity of outer cylinder 20 can be given, prevented outer
20 cabinets of cylinder are collided.
Shown in Figure 2 in the present embodiment, guide sleeve 3 is tubular structure open at one end, and damping fin 2 is located at guide sleeve 3
Open end inside, the other end of guide sleeve 3 is equipped with the first articulated section 31.The vibration of outer cylinder 20, drive guide rod 1 relative to
Guide sleeve 3 is mobile, provides variable damping power；Venthole 32 is offered on the jacket wall of the opposite one end in 3 open end of guide sleeve, is being led
When mobile when stretching in guide sleeve 3 to bar 1, gas can flow out through venthole 32 or enter in guide sleeve 3, avoid guide rod
By one section of gas confinement in guide sleeve 3, the gas in this way when guide rod 1 is mobile in guide sleeve 3 can flow out for 1 free end
Or supplemented, in this way when the vibration of outer cylinder 20 is slow, it not will form air damping.
In the present embodiment, guide rod 1 is with hollow stem open at one end, and open end is located in guide sleeve 3, by setting
1 hollow stem of guide rod is set, and the chamber of guide rod 1 and the chamber of guide sleeve 3 are connected, forms biggish receiving in this way
Space reduces influence of the air-flow for flowing through through-hole 32 to guide rod 1 in the telescopic moving in guide sleeve 3 of guide rod 1；It leads
The second articulated section 14 is equipped with to the other end of bar 1.
Referring to described in Fig. 3, for the fixation of damping fin 2, it is equipped with cutting ferrule 5 between damping fin 2 and guide sleeve 3, is being oriented to
The first notch 33 of annular is offered on the inside of the open end of set 3, cutting ferrule 5 is located at the first notch 33；It is opened up in the inside of cutting ferrule 5
There is the second notch 51, damping fin 2 is located at the second notch 51 and contacts with the longitudinal edge of the first notch 33.2 quilt of damping fin in this way
Cutting ferrule 5 and the limit of the first notch 33 are fixed, and the thickness of cutting ferrule 5 is equal with the thickness of the first notch 33, this ensure that being located at resistance
2 both ends of Buddhist nun's piece to be connected and fixed structure concordant；The thickness of damping fin 2 is greater than the thickness of the second notch 51, that is, damping fin 2 has
A part of inwardly projecting, the protrusion point relative movement of the active section and damping fin 2 of guide rod 1 generates friction damping force.
For the fixation of cutting ferrule 5, at least two buckles 52, the first notch 33 are placed in the external circumferential of cutting ferrule 5
On offer with 52 card slots 331 that match of buckle, and buckle 52 and be fixed in card slot 331, cutting ferrule 5 it is axial
There are four buckles 52 for cloth；In this way by setting buckle 52 and card slot 331, be conducive to increase fixed between cutting ferrule 5 and guide sleeve 3
Fastness, while making the assembly manipulation of cutting ferrule 5 simple.
Stability and aesthetics after cutting ferrule 5 is fixed in order to further increase, the end of cutting ferrule 5 be additionally provided with radially to
The gear of outer extension keeps off the end for being located at 3 open end of guide sleeve along 53 along 53.Cutting ferrule 5 is increased along 53 by setting gear in this way
Stress performance, improves the stability of cutting ferrule 5, and is conducive to increase the aesthetics after cutting ferrule 5 and the assembly of guide sleeve 3.
In the present embodiment, in order to enable anticollision barrel 50 can provide required variable damping power, need for specific
Washing machine models carry out the design of anticollision barrel 50, are derived according to the known conditions of washing machine for the machine design
It is above-mentioned to guarantee that anticollision barrel 50 has the effect of for the major parameter of anticollision barrel 50.
It is shown in Figure 6, it is the design method of anticollision barrel 50 in the present embodiment, includes the following steps:
A. according to the parameter of washing machine itself, maximum eccentric power Fe when laundry machine dehydration is determined；And then determine anticollision barrel
Damping force FD, finally determine the interference spacing d between the active section and damping fin of guide rodc。
Specifically, starting eccentric mass m according to laundry machine dehydratione, inner tank of washing machine diameter r1And low frequency rigid body mode
Highest resonant frequency fPMax, calculate eccentric force Fe=m when laundry machine dehydratione*(2πfPMax)2rI.Wherein washed according to the model
The anti-eccentric ability determined when clothing machine designs, determines that laundry machine dehydration starts eccentric mass me；Washing machine low frequency rigid body mode
Highest resonant frequency fPMaxIt is the numerical value simulated under ideal conditions；When the eccentric force Fe being calculated is laundry machine dehydration
Maximum eccentric power.
Eccentric force Fe when step A1. is according to laundry machine dehydration determines anticollision box equilibrant force FC=s1Fe；Wherein s1For peace
Overall coefficient, it is preferred that 0.1 < s1<3。
Specifically, avoiding washing machine outer cylinder 20 from hitting case, anticollision case apparatus 50 to overcome eccentric force when laundry machine dehydration
Need to provide anticollision box equilibrant force FC, wherein needing to meet FC>Fe-Fh-Fa, wherein FhFor the balance for the horizontal direction that sunpender 40 provides
Power, FaThe elastic restoring force provided for electric machine main shaft.FhWith the deflection of 40 spring of sunpender and the folder of sunpender 40 and vertical direction
Angle is related, FaIt is related with electric machine main shaft drift angle.Due to F under normal conditionshSmaller and FaIt is related with Spindle Deviation, therefore pass through peace
Overall coefficient s1 replaces the two power.
Step A2. is according to anticollision box equilibrant force FCAnd plan the quantity N of the anticollision barrel 50 of setting on washing machine,
The damping force for calculating each anticollision barrel 50 is FD；Damping force FD=2FC/N。
Specifically, every washing machine at least guarantee there are two or more anticollision case apparatus 50, and every washing machine is at least
Guarantee that there are two the anticollision case apparatus that different directions are placed, to guarantee when outer cylinder 20 vibrates in the horizontal direction, two anticollision boxes
Vibration of the device 50 from both direction damping outer cylinder 20.The quantity of anticollision case apparatus 50 is recommended as 2 integral multiple, preferably 2,4,6,
8.The angle of two adjacent anticollision case apparatus 50 in the horizontal plane is preferred using four anticollision box dresses between 30 ° to 150 °
50 are set, and two adjacent anticollision case apparatus 50 are mutually perpendicular to, that is, two adjacent anticollision case apparatus 50 are in the horizontal plane
Angle be 90 °.
Step A3. is F according to the damping force of anticollision barrel 50DAnd the coefficient of friction c for the damping fin 2 selected, really
Determine the normal pressure F between the active section 11 of guide rod 1 and damping fin 2N=FD/c.Wherein, FNWith connecing for damping fin 2 and guide rod 1
Contacting surface is long-pending and contact normal stress is directly proportional.
Step A4. is according to normal pressure FNAnd the equivalent stiffness k of damping fin 2c, determine active section 11 and the resistance of guide rod 1
Interference spacing d between Buddhist nun's piece 2c=FN/kc。
B. according to interference spacing dc, in the 11 maximum gauge φ of active section of guide rod 1wWith the internal diameter φ of damping fin 2cIn,
According to φw=φc+2dc, after the size for selecting one of them, the size of another can be calculated.
Specifically, damping fin 2 is circular ring shape, φC isThe interior circular diameter of damping fin 2, the active section 11 of guide rod 1 are maximum straight
Diameter φwWith the internal diameter φ of damping fin 2cIt needs to selected one numerical value, and another is calculated.
C. according to the internal diameter φ of damping fin 2C,Determine 12 diameter phi of unloaded section of guide rod 1z。
Specifically, the diameter phi of the unloaded section 11 of guide rod 1zCertainly it is less than the internal diameter φ of damping fin 2c, to guarantee zero load
There is no damping force between section 12 and damping fin 2；Preferred φz=s3φc, wherein s3For safety coefficient, 0.3 < s3≤1。
D. according to the displacement amplitude d of laundry machine dehydration stable operation stage outer cylinder 20O, determine the unloaded section 12 of guide rod 1
Length Lz。
Specifically, displacement amplitude dOFor the displacement amplitude of horizontal direction, the length L of the unloaded section 12 of guide rod 1z=2s4dO,
Wherein s4For safety coefficient, s4> 1 to guarantee outer cylinder 40 in stable operation, and unloaded section 12 is located at damping fin 2, anticollision barrel
50 do not provide damping force；Wherein, 1 < s4< 3, but s4Value can not be excessive, avoid 20 Oscillation Amplitude of washing machine outer cylinder larger
When, the active section of guide rod 1 is not at damping fin 2, it is preferred that 1 < s4<1.5。
E. according to the length L of the unloaded section of guide rod 1zAnd the minimum spacing L between outer cylinder 20 and cabinet 10Max, really
Determine the length L of the active section 11 of guide rod 1w。
Specifically, in order to guarantee that outer cylinder does not hit case, guide rod length of work segment Lw<LMax-Lz/ 2, wherein LMaxIt is outer
Minimum spacing between cylinder and cabinet.Also there is the cut-off section 13 extended along active section 11 to end on guide rod 1, work as guiding
Relative motion both when the cut-off section 13 of bar 1 moves near damping fin 2 stops, that is, anticollision barrel 50 is given at this time
The resistance of 20 rigidity of outer cylinder, avoids the bucket that hits of outer cylinder 20, thus guide rod length of work segment L is arrangedw<LMax-Lz/2.In order into one
Step guarantees safety, preferably Lw=s5LMax-Lz/2,s5For safety coefficient, preferably 0.2 < s5<1。
F. according to the major parameter of anticollision barrel 50 in above-mentioned steps, the Anti-collision barrel for the machine design is obtained
Device.
Specifically, several major parameters of the anticollision barrel 50 obtained in above-mentioned steps: the active section 11 of guide rod 1
Maximum gauge φw, length of work segment Lw, unloaded 12 diameter phi of sectionz, unloaded section 12 length Lz, damping fin 2 internal diameter φc。
Referring to a kind of specific constructive form for shown in 7 figures, being guide rod 1, it is φ that unloaded section 12, which is diameter,z、Length LzEtc.
Diameter cylindrical section, it is φ that active section 11, which has diameter,wEqual diameter cylindrical section 111 and taper type changeover portion 112, taper type transition
The diameter of the cross section Duan Renyi is respectively positioned on the 11 maximum gauge φ of active section of guide rod 1wWith the diameter phi of unloaded section 13zBetween.Cone
Platform shape changeover portion 112 is the frustum between equal diameter cylindrical section 111 and unloaded section 12, and cut-off section 13 is located at the two of guide rod 1
End, cut-off section 13 are also equal diameter cylindrical section.
For the design method of further description anticollision barrel, illustrate to set by taking 8kg platform rotary drum washing machine as an example
Meter process, design method are as follows:
A. according to the parameter of washing machine itself, maximum eccentric power Fe when laundry machine dehydration is determined；And then determine anticollision barrel
Damping force FD, finally determine the interference spacing d between the active section and damping fin of guide rodc。
Specifically, starting eccentric mass m according to laundry machine dehydratione=1kg, inner tank of washing machine diameter r1=0.25m and low
The highest resonant frequency f of frequency rigid body modePMax=3.5Hz calculates eccentric force Fe=m when laundry machine dehydratione*(2πfPMax)2rI=
121N。
Eccentric force Fe when step A1. is according to laundry machine dehydration calculates anticollision box equilibrant force FC=s1Fe；Wherein s1For
Safety coefficient, preferably s1=0.2, thus FC=24N。
Step A2. is according to anticollision box equilibrant force FCAnd plan the quantity N of the anticollision barrel 50 of setting on washing machine,
The damping force for calculating each anticollision barrel 50 is FD；Damping force FD=2FC/N.Four anticollision barrels are used on washing machine
50, i.e. N=4, then damping force FD=24N。
Step A3. is F according to the damping force of anticollision barrel 50DAnd the coefficient of friction c for the damping fin 2 selected=
0.3, calculate the normal pressure F between the active section 11 of guide rod 1 and damping fin 2N=FD/c=40N。
Step A4. is according to normal pressure FNAnd the equivalent stiffness k of damping fin 2c, wherein kc=5×104N/m is calculated and is led
Interference spacing d between the active section 11 and damping fin 2 of bar 1c=FN/kcc=0.8×10-3m。
B. according to interference spacing dc, choose the internal diameter φ of damping fin 2c=1.5×10-2M, and according to φw=φc+2dc, meter
Calculate the 11 maximum gauge φ of active section for obtaining guide rod 1w=1.66×10-2m。
C. according to the internal diameter φ of damping fin 2C,Wherein φz=s3φc, s3=0.9, the unloaded section 12 for calculating guide rod 1 is straight
Diameter φz= 1.35×10-2m。
D. according to the displacement amplitude d of laundry machine dehydration stable operation stage outer cylinder 20O, wherein dO=3×10-3M, s4=1.2,
Calculate the length L of the unloaded section 12 of guide rod 1z=7.2×10-3m。
E. according to the length L of the unloaded section 12 of guide rod 1zAnd the minimum spacing L between outer cylinder 20 and cabinet 10Max,
Determine the length L of the active section 11 of guide rod 1w=s5LMax-Lz/ 2, wherein LMax=1.8×10-2M, s5=0.9, then active section 11
Length Lw=9×10-3m。
According to the major parameter of anticollision barrel 50 in above-mentioned steps, the anticollision barreled for the machine design is obtained
It sets.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But without departing from the technical solutions of the present invention, according to the technical essence of the invention to above embodiments institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection scope of technical solution of the present invention.
Claims (10)
1. a kind of washing machine anticollision barrel protrudes into the guide rod inside the guide sleeve including guide sleeve and one end, described
The inside of guide sleeve is equipped with the damping fin for cooperating with guide rod and generating damping force, which is characterized in that the guide rod has middle part
Unloaded section and active section positioned at unloaded section both ends, the diameter of the zero load section is less than the internal diameter of the damping fin, described
The diameter of active section is greater than the internal diameter of the damping fin；In washing machine stable operation, the zero load section is located at the damping fin
Place；When the vibration of washing machine outer cylinder is larger, the active section is located at the damping fin.
2. anticollision barrel according to claim 1, which is characterized in that have cylindrical main work in the active section
Section and the reducer being arranged between the unloaded section and main active section, the equal position of diameter in any section of the reducer
Between the unloaded section diameter and active section diameter.
3. anticollision barrel according to claim 1, which is characterized in that the guide rod also have along the active section to
The cut-off section that end extends, the guide rod is relative to guide sleeve stretching motion, when the cut-off section of the guide rod moves to institute
Relative motion both when stating near damping fin stops.
4. anticollision barrel according to claim 1, which is characterized in that the guide sleeve is tubular knot open at one end
Structure, the damping fin are located at the inside of the open end of the guide sleeve, and the other end of the guide sleeve is equipped with the first articulated section.
5. anticollision barrel according to claim 1, which is characterized in that the guide rod is with open at one end hollow
Bar, open end are located in guide sleeve, and the other end of the guide rod is equipped with the second articulated section.
6. anticollision barrel according to any one of claims 1 to 5, which is characterized in that the damping fin and guide sleeve it
Between be equipped with cutting ferrule, the first notch of annular is offered on the inside of the open end of the guide sleeve, the cutting ferrule is located at the first notch
Place；The second notch is offered on the inside of the cutting ferrule, the damping fin is located at the second notch and the radial direction with the first notch
Side contact.
7. anticollision barrel according to claim 6, which is characterized in that the end of the cutting ferrule is additionally provided with radially
The gear edge of extension, the gear is along the end for being located at the guide sleeve open end.
8. anticollision barrel according to claim 6, which is characterized in that the external circumferential of the cutting ferrule is placed at least two
A buckle, offer on first notch with the card slot for buckling and matching, it is described to be fixed in the card slot
It is interior.
9. anticollision barrel according to claim 4, which is characterized in that in the opposite one end in the guide sleeve open end
Venthole is offered on jacket wall.
10. a kind of washing machine including cabinet and is located in the box body the outer cylinder and inner cylinder that are set with and are arranged, the outer cylinder passes through
Sunpender is lifted on the cabinet, which is characterized in that being arbitrarily equipped between the two in the outer cylinder, cabinet, sunpender three
The described in any item anticollision barrels of claim 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710632488.3A CN109306600B (en) | 2017-07-28 | 2017-07-28 | Washing machine anti-collision barrel device and washing machine |
| PCT/CN2017/119726 WO2019019553A1 (en) | 2017-07-28 | 2017-12-29 | Washing machine damping structure, design method, transverse shock-absorbing apparatus, and washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710632488.3A CN109306600B (en) | 2017-07-28 | 2017-07-28 | Washing machine anti-collision barrel device and washing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109306600A true CN109306600A (en) | 2019-02-05 |
| CN109306600B CN109306600B (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710632488.3A Active CN109306600B (en) | 2017-07-28 | 2017-07-28 | Washing machine anti-collision barrel device and washing machine |
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| CN (1) | CN109306600B (en) |
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| DE3336862A1 (en) * | 1983-02-02 | 1984-08-02 | VEB Waschgerätewerk Schwarzenberg, DDR 9430 Schwarzenberg | Friction damper for vibration-damped machines and apparatuses, especially drum washing machines |
| DE3616373A1 (en) * | 1986-05-15 | 1987-11-19 | Miele & Cie | Friction damper |
| JPH11351317A (en) * | 1998-06-08 | 1999-12-24 | Hitachi Ltd | Drum washer |
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| CN109306600B (en) | 2022-04-12 |
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Effective date of registration: 20220308 Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant after: QINGDAO HAIER WASHING MACHINE Co.,Ltd. Applicant after: QINGDAO HAIER SMART TECHNOLOGY R&D Co.,Ltd. Applicant after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER WASHING MACHINE Co.,Ltd. Applicant before: Qingdao Haier intelligent technology R & D Co., Ltd. |
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