Summary of the invention
The present invention is directed to the above-mentioned problems in the prior art, provides a kind of washing machine horizontal shock-absorbing device, Ji Nengfang
Only washing machine hits case problem when low speed is dehydrated, and can guarantee when high speed dewatering will not be due to the vibration that is transmitted on cabinet
Increase and total noise of centrifuge is caused to increase.
To reach above-mentioned technical purpose, the present invention is implemented with the following technical solutions:
A kind of washing machine horizontal shock-absorbing device, including damping structure, first mounting base hinged with described damping structure one end, with
And vertically arranged slide bar, the other end of the damping structure are slidably sleeved on the slide bar, the both ends of the slide bar
It is respectively equipped with the second mounting base.
Further, slide opening is offered on the damping structure, the slide bar passes through the slide opening, the slide bar and slide opening
Between be equipped with the second cushion.
Further, second cushion include the second tubular body, along the second cylindrical body upper and lower ends to
Second flange of outer extension, two second flange and the second tubular body form the receiving to match with the slide opening edge
Slot.
Further, upper and lower two limiting grooves are equipped on the slide bar, the slide opening two limits on slide bar are recessed
It is slided between slot.
Further, first mounting base is equipped with pin shaft, and the damping structure is equipped with to match with the pin shaft
Pin hole, the first cushion is set between the pin shaft and pin hole.
Further, first mounting base has two mounting plates disposed in parallel, divides on two mounting plates
Not with respect to axis pin base close to each other is equipped with, the pin hole is located between two axis pin bases, offers pin on the axis pin base
Axis hole, the pin shaft pass through the pin shaft hole.
Further, the damping structure includes guide rod and the guide sleeve that is sleeved on the outside of the guide rod, described
The inside of damping sleeve be equipped with guide rod cooperate generate damping force damping fin, the guide rod have middle part unloaded section, with
And the active section positioned at unloaded section both ends, it is described zero load section diameter be less than the damping fin internal diameter, the active section it is straight
Diameter is greater than the internal diameter of the damping fin.
Further, described guide rod one end is located at the set into set, and the other end is sleeved on slide bar;The guide sleeve
For tubular structure open at one end, the other end and the first mounting base are hinged.
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 at the damping fin stops
Only.
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 card slot
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 outside of the cutting ferrule is axially placed at least two buckles, offered on first notch with
Described to buckle the card slot to match, the buckle is located 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 horizontal shock-absorbing device, the present invention also provides a kind of design sides of above-mentioned horizontal shock-absorbing device
Method, the design method include 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 it determines and laterally subtracts
Shake 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 horizontal shock-absorbing device in above-mentioned steps, the horizontal shock-absorbing for the machine design is obtained
Device.
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 horizontal shock-absorbing device of setting on washing machine, the damping force for calculating each horizontal shock-absorbing device is FD;Resistance
Buddhist nun's power FD=2FC/N。
Further, also there is the step A3 being located at after step A2 in step, according to the damping of horizontal shock-absorbing device
Power is 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 horizontal shock-absorbing device, the present invention also provides a kind of laundries with the horizontal shock-absorbing device
Machine can prevent washing machine will not be due to being transmitted to case when hitting case problem and high speed dewatering in low speed dehydration
Vibration on body increases and total noise of centrifuge is caused 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 claim 1 to 9 in the outer cylinder, cabinet, sunpender three
Described in any item horizontal shock-absorbing devices.
Further, the horizontal shock-absorbing device is equipped between the cabinet and outer cylinder, first mounting base is fixed
On outer cylinder, second mounting base is fixed on cabinet.
Washing machine horizontal shock-absorbing device provided by the invention passes through vertically arranged slide bar and the damping structure
The other end is slidably sleeved on the slide bar, that is, one end of damping structure can be slided on slide bar, in this way can be with
So that damping structure can be by the sliding on slide bar, in horizontal or close when outer cylinder has vibration in the up-down direction
Be conducive to increase the effect laterally damped, avoid so that damping structure is mainly used for damping the power of horizontal direction like horizontality
Cabinet is hit caused by outer cylinder amplitude is excessive.
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.
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 " are used for description purposes only, and should not be understood as instruction or
Imply relative importance.
- Figure 11 refering to fig. 1 is one embodiment of washing machine horizontal shock-absorbing device proposed by the invention, washing machine packet
The outer cylinder 20 and inner cylinder 30 for being set with setting for including cabinet 10, being arranged in cabinet 10, outer cylinder 20 are lifted on by four sunpenders 40
On the gusset of 10 four corners of cabinet;Washing machine hits case and occurs mainly in dehydration startup stage, swashs when washing machine revolving speed is corresponding
When encouraging power fundamental frequency and the close shared frequency of interior outer barrel machine sunpender composition system, inner/outer tube resonates, and 20 amplitude of outer cylinder is obvious
Increase, collides cabinet so as to cause outer cylinder 20, hit case.Bucket is hit in order to prevent, and at least two are equipped on washing machine
The horizontal shock-absorbing device 50 being oppositely arranged, for providing the damping force of horizontal direction;Horizontal shock-absorbing device 50 setting cabinet 10,
In outer cylinder 20,40 three of sunpender wherein between the two, be preferably located between cabinet 10 and outer cylinder 20, due to cabinet 10
It is opposing stationary, more effective damping force can be provided and avoid hitting bucket.
In the present embodiment, referring to shown in Fig. 1, Fig. 6 and Fig. 7, washing machine horizontal shock-absorbing device 50 includes damping structure, damping
Structure includes guide rod 1 and the guide sleeve 3 for being sleeved on 1 outside of guide rod, is equipped in the inside of guide sleeve 3 and matches with guide rod 1
Close the damping fin 2 for generating damping force.It is hinged with the first mounting base 6 in one end of damping structure, the other end of damping structure can be slided
Dynamic is sleeved on slide bar 7, and slide bar 7 is vertically arranged, and is respectively equipped with the second mounting base 8 at the both ends of slide bar 7.Pass through damping
One end of structure can be slided on slide bar 7, can make so outside cylinder 20 in the up-down direction have vibration when, damping knot
Structure can be by the sliding on slide bar 7, in horizontal or near-horizontal state, so that damping structure is mainly used for damping level
The power in direction is conducive to increase the effect laterally damped, hits cabinet caused by avoiding outer cylinder amplitude excessive.
Shown in Figure 9 in the present embodiment, the first mounting base 6 is fixed on outer cylinder 20, two the second about 8 mounting bases
It is fixed on cabinet 10 up and down;When outer cylinder 20 vibrates, one end of the first mounting base 6 and damping structure follows outer cylinder 20 together
It vibrates, the vibration of any point can be decomposed into up and down direction, left and right directions and shake in the front-back direction on certain outer cylinder 20
It is dynamic, wherein left and right directions and in the front-back direction vibration be the vibration of horizontal direction, follow outer cylinder 20 in upper and lower in mounting base 6
To when having displacement, the both ends of damping structure have a certain distance in the up-down direction, and the other end of damping structure exists at this time
Sliding on slide bar 7 is simultaneously mobile to the direction for tending to damping structure level.Since cabinet 10 is in relative static conditions, by
Two mounting bases 8 are fixed on cabinet 10, this ensure that slide bar 7 is in vertical state, advantageously ensure that the another of damping structure
The fluency of the sliding on slide bar 7 is held, and is conducive to the horizontal adjustment of damping structure.
In the present embodiment, referring to shown in Fig. 3 and Fig. 5,1 one end of guide rod is located in guide sleeve 3, the other end of guide rod 1
Equipped with slide opening 14 and it is sleeved on slide bar 7.Slide bar 7 passes through slide opening 14, and the second buffering is equipped between slide bar 7 and slide opening 14
Pad 9.It is so vertically arranged by setting slide opening 14 and is sleeved on slide bar 7, the end of guide sleeve 3 may be implemented in slide bar 7
On slide up and down;By the way that the second cushion 9 is arranged, the rigid contact between slide bar 7 and slide opening 14 is avoided, avoids sliding
Noise is generated in journey and when damping structure stress between slide bar 7 and slide opening 14;Also, it is not in horizontal plane in damping structure
When, that is, the both ends of damping structure have a certain distance in above-below direction, at this time the axis of the axis of slide opening 14 and slide bar 7
Portion is overlapped, and the part of the second cushion 9 is squeezed generation flexible deformation at this time, while generating up and down direction in damping structure
Pulling force, allows the movement of the smoothness of slide opening 14.
Shown in Figure 5 in the present embodiment, the second cushion 9 includes the second tubular body 91, along the second cylindrical body 91
Outwardly extending second flange 92 of upper and lower ends, and two the second flange 92 and the second tubular body 91 are formed and 14 side of slide opening
The holding tank that edge matches;Equipped in slide opening 14 when being moved on slide bar 7, due to the block of upper and lower two flange 92, so that
Two cushions 8 are fastened on the edge of slide opening 14, move together.
In the present embodiment, upper and lower two limiting grooves 71, two limits of the slide opening 14 on slide bar 7 are equipped on slide bar 7
It is slided between groove 71.By the way that limiting groove 71 is arranged, defines moving range of the slide opening 14 on slide bar 7, guarantee slide opening 14
Sliding fluency on slide bar 7, avoids the occurrence of stuck situation.
In the present embodiment, as shown in figure 3 and figure 4, guide sleeve 3 is tubular structure open at one end to ginseng, and damping fin 2, which is located at, leads
To the inside of the open end of set 3, the other end of guide sleeve 3 is equipped with pin hole 31 and hinged with the first mounting base 6.In the first installation
Seat 6 is equipped with pin shaft 61, and pin shaft 61 is vertically arranged, and guide rod 1 can be rotated around pin shaft 61, sets between pin shaft 61 and pin hole 31
First cushion, the first cushion use structure identical with the second cushion 9.
Specifically, the first mounting base 6 has two mounting plates 63 disposed in parallel, it is opposite respectively on two mounting plates 63
Equipped with axis pin base 62 close to each other, pin hole 31 is located between two axis pin bases 62, and pin shaft hole 64 is offered on axis pin base 62,
Pin shaft 61 passes through pin shaft hole 64.By the way that axis pin base 62 is arranged, be conducive to increase the structural strength at 61 assembly of pin shaft, and advantageous
It is placed between two axis pin bases 62 in pin hole 31, improves the speed of assembly.
In the present embodiment, when outer cylinder 20 vibrates, drives guide rod 1 mobile relative to guide sleeve 3, variable damping power is provided;?
Venthole 32 is offered on the jacket wall of the opposite one end in 3 open end of guide sleeve, it is mobile when guide rod 1 stretches in guide sleeve 3
When, gas can flow out through venthole 32 or enter in guide sleeve 3, avoid the free end of guide rod 1 that one section of gas confinement exists
In guide sleeve 3, the gas in this way when guide rod 1 is mobile in guide sleeve 3 can be flowed out or be supplemented, in this way in outer cylinder 20
When vibrating slow, air damping not will form.
Shown in Figure 8 in the present embodiment, guide rod 1 has the unloaded section 12 at middle part and is located at 12 both ends of unloaded section
Active section 11, wherein the diameter of unloaded section 12 is less than the internal diameter of damping fin 2, the diameter of active section 11 is greater than the interior of damping fin 2
Diameter.By generating damping force between guide rod 1 and damping fin 2, avoid hitting bucket;There is 12 He of unloaded section by guide rod 1
Active section 11, in washing machine stable operation, unloaded section 12 is located at damping fin 2, that is, in washing machine outer cylinder 20 in stabilization
In the safe amplitude of operation, horizontal shock-absorbing device gives lesser damping force or does not give damping force, thus the vibration on outer cylinder 20
It is dynamic to be transmitted on cabinet 10 by horizontal shock-absorbing device 50, avoid the increase of noise;It is vibrated in washing machine outer cylinder larger
When, 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, produces at this time
The raw damping force for preventing outer cylinder 20 from vibrating avoids hitting bucket so that the Oscillation Amplitude of outer cylinder 20 reduces;Namely horizontal shock-absorbing device
50 offers are variable damping power, and the needs of horizontal shock-absorbing device 50 can prevent washing machine from hitting case problem in low speed dehydration,
Can guarantee again will not cause total noise of centrifuge to increase when high speed dewatering since the vibration being transmitted on cabinet increases.
Shown in Figure 8, unloaded section 12 is cylinder, and active section 11 has cylindrical main active section 111 and setting
Reducer 112 between unloaded section 12 and main active section 111, diameter is greater than the internal diameter of damping fin 2 on certain reducer 112
Part contacts with damping fin 2 and generates damping force;Reducer 112 is taper type, that is to say, that the bus of reducer 112 is to connect
The inclined straight line in one end between unloaded section 12 and main active section 111 is connect, the diameter in any section of reducer 112 is respectively positioned on zero load
Between the diameter of section 12 and the diameter of main active section 111.Logical setting reducer 112 makes guide rod 1 be in stretching motion can be with
The smoothly transition between unloaded section 12 and active section 11, when reducer 112 is by damping fin 2, reducer 112 and damping fin 2
Between damping force gradually change.
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.
Referring to shown in Fig. 6 and Fig. 7, for the fixation of damping fin 2, cutting ferrule 5 is equipped between damping fin 2 and guide sleeve 3,
The first notch 33 of annular is offered on the inside of the open end of guide sleeve 3, cutting ferrule 5 is located at the first notch 33;In the inside of cutting ferrule 5
The second notch 51 is offered, damping fin 2 is located at the second notch 51 and contacts with the longitudinal edge of the first notch 33.It damps in this way
Piece 2 is fixed by cutting ferrule 5 and the limit of the first notch 33, and the thickness of cutting ferrule 5 is equal with the thickness of the first notch 33, this ensure that position
In 2 both ends of damping fin 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, damps
Some is inwardly projecting for piece 2, and 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 horizontal shock-absorbing device 50 can provide required variable damping power, need for specific
Washing machine models carry out horizontal shock-absorbing device 50 design, derived according to the known conditions of washing machine and set for the washing machine
It is above-mentioned to guarantee that horizontal shock-absorbing device 50 has the effect of for the major parameter of the horizontal shock-absorbing device 50 of meter.
It is shown in Figure 10, it is the design method of horizontal shock-absorbing device 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 horizontal shock-absorbing dress
The damping force F setD, 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 of the horizontal shock-absorbing device 50 of setting on washing machine
N, the damping force for calculating each horizontal shock-absorbing device 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 horizontal shock-absorbing device 50DAnd the coefficient of friction c for the damping fin 2 selected,
Determine the normal pressure F between the active section 11 of guide rod 1 and damping fin 2N=FD/c.Wherein, FNWith damping fin 2 and guide rod 1
Contact area and contact normal stress are 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, horizontal shock-absorbing dress
It sets 50 and damping force is not provided;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, horizontal shock-absorbing device 50 is given at this time
The resistance for giving 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 horizontal shock-absorbing device 50 in above-mentioned steps, the transverse direction for the machine design is obtained
Damping device.
Specifically, several major parameters of the horizontal shock-absorbing device 50 obtained in above-mentioned steps: the active section of guide rod 1
11 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 11 figures, being guide rod 1, it is φ that unloaded section 12, which is diameter,z、Length Lz's
Equal 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 mistake
The diameter for crossing any cross section of section is respectively positioned on the 11 maximum gauge φ of active section of guide rod 1wWith the diameter phi of unloaded section 13zBetween.
Taper type changeover portion 112 is the frustum between equal diameter cylindrical section 111 and unloaded section 12, and cut-off section 13 is located at guide rod 1
Both ends, cut-off section 13 are also equal diameter cylindrical section.
For the design method of further description horizontal shock-absorbing device, illustrate by taking 8kg platform rotary drum washing machine as an example
Design 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 horizontal shock-absorbing dress
The damping force F setD, 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 of the horizontal shock-absorbing device 50 of setting on washing machine
N, the damping force for calculating each horizontal shock-absorbing device 50 is FD;Damping force FD=2FC/N.Subtracted on washing machine using four transverse directions
Device 50, i.e. N=4 are shaken, then damping force FD=24N。
Step A3. is F according to the damping force of horizontal shock-absorbing device 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。
It according to the major parameter of horizontal shock-absorbing device 50 in above-mentioned steps, obtains subtracting for the transverse direction of the machine design
Shake device.
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.