CN1876937A - Hydraulic damper of drum washing machine - Google Patents
Hydraulic damper of drum washing machine Download PDFInfo
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- CN1876937A CN1876937A CN 200510013753 CN200510013753A CN1876937A CN 1876937 A CN1876937 A CN 1876937A CN 200510013753 CN200510013753 CN 200510013753 CN 200510013753 A CN200510013753 A CN 200510013753A CN 1876937 A CN1876937 A CN 1876937A
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Abstract
The invention discloses a hydraulic damper of barrel washing machine, comprising hollow cylinder, forming oil cavity in the bosom; a cylinder rod penetrating and baring one end of cylinder; a wash barrel holdfast setting in another end of cylinder; a chassis support which set on the end bare cylinder of cylinder rod; as well as doing sliding movement in the bosom of cylinder, also connected in the end of cylinder rod placing inside the cylinder, and consisted by pistons of forming many oil-hole on its surface, thereinto there is at least one injection molding thing in the component part mentioned above. The hydraulic damper of barrel washing machine via improving the hydraulic damper structure of barrel washing machine, making the material of main component parts can adopt plastic injection, evidently reducing making cost of antivibrator. At the same time can produce in scores, so that improving production efficiency; the invention also improving the quality reliability of whole hydraulic damper by improving the quality of all component parts.
Description
Technical field
The present invention relates to a kind of roller washing machine.Particularly relate to a kind of hydraulic damper that is applicable to roller washing machine.
Background technology
In general, washing machine is to utilize effects such as chemical breakdown and mechanical shock to remove the household electrical appliance that stick in the spot on the clothing.
Washing machine is divided into tumbling-box washing machine and pulsator washing machine substantially, wherein tumbling-box washing machine is compared with cylinder is erect and the pulsator washing machine of rotation, the whole height of its product is lower, and hardly the phenomenon that washings twines mutually can take place, so its demand is increasing gradually.
Make a detailed description below in conjunction with the structure of accompanying drawing existing roller washing machine.
Fig. 1 is the structural representation of the roller washing machine of prior art.As shown in Figure 1, roller washing machine comprises: the casing 10 that constitutes outward appearance; Be arranged at the washtub 20 of casing 10 inside; The damper 100 and the suspension spring 50 that are provided with in order to support washtub 20; Rotatably be arranged at the inside of washtub 20, roughly the cylinder 30 of cylindrical shape; The motor 40 of driving force is provided for the rotation of cylinder 30.
Motor 40 includes: be installed on the stator (not shown) on the washtub rear wall; And the outside that is arranged at stator, be connected with 30 on cylinder, and can the rotor rotated (not shown) when connecting the power supply of stator.
Suspension spring 50 is arranged between the upside of the upper inner face of casing 10 and washtub 20, and damper 100 is arranged between the downside of the base of casing 10 and washtub 20.Its effect is when washing machine carries out dewatering operation, reduces the vibration of washtub 20.
As above the effect of the existing roller washing machine of structure is as follows.
When the user will wash clothes, under the state of connecting the washing machine power supply, throw in washings to the inside of cylinder 30, and push start button, washings are to the internal feed of cylinder 30 so.
After the supply of washings finishes, be soaked at washings under the state of washings, cylinder 30 rotates by the driving force of motor 40.
Because the rotation of cylinder 30, be invested in its inner washings and washings and be raised to upside along the inwall of cylinder 30, then fall after rise again.In the going round and beginning again of above-mentioned this process,, the falling of washings impacts and friction because can producing.The laundry operation of washing machine is finished by the decomposition of impact and friction and washing agent.
After laundry operation finishes, carry out the rinsing operation according to the number of times that is arranged on the microprocessor, then carry out dewatering operation again.In dewatering operation, cylinder 30 is done high speed rotary motion.
The not drying function of roller washing machine need to prove the roller washing machine that drying function is also arranged at this as shown in Figure 1.
When the washing of roller washing machine and dewatering operation, the damper of vibration of washtub 20 of can decaying comprises: play the frcition damper (friction damper) of damping action by frictional force, and the hydraulic damper (oil damper) etc. that utilizes the flowability of oil.Consider that from the characteristic of buffering the buffering effect of hydraulic damper is better, but consider price, friction damper is more cheap, so still generally use frcition damper at present.
Existing hydraulic damper is compared with friction damper, and it is expensive more than 5 times that its price is wanted, and therefore for manufacturer, if use hydraulic damper, the manufacturing cost of its roller washing machine is too high really.
Fig. 2 is the external structure schematic diagram of hydraulic damper in the roller washing machine of prior art.
As shown in Figure 2, the two ends of the cylinder 1a of existing its metal material of hydraulic damper D ' are welded with metal cap 60 respectively, irritate the inside of cylinder 1a oil, end at cylinder 1a is provided with piston rod 70, the end of being embraced by cylinder 1a of piston rod 70 is provided with the piston (not shown) of metal material, and piston is done sliding motion in the inside of cylinder 1a.
As above the material of the existing hydraulic damper D ' of structure all is a metal, its manufacturing cost height, but also to carry out welding sequence, production efficiency is also low.During hydraulic damper D ' work simultaneously, the resistance of its piston is bigger, and the reliability of product is lower.In a word, in the application of hydraulic damper, has the inconvenience part.
Summary of the invention
Technical problem to be solved by this invention is, provide a kind of by improving the structure of hydraulic damper, make its main composition parts can injection mo(u)lding, thereby can produce the significant manufacturing cost that reduced in enormous quantities, also improve the hydraulic damper of the roller washing machine of production efficiency and production reliability simultaneously significantly.
The technical solution adopted in the present invention is: a kind of hydraulic damper of roller washing machine, include the cylinder of hollow, and portion is formed with the grease chamber that can pour into oil within it; Run through and expose the piston rod of an end of cylinder; Also include: be arranged at the other end of cylinder, be used for damper is connected to washtub support on the washtub; Be arranged at piston rod and expose on that end of cylinder, be used for damper is connected to base support on the base of casing; And do sliding motion in the inside of cylinder, and and be connected piston rod and be positioned on that end of cylinder, and the piston that is formed with a plurality of oilholes on its face constitutes, wherein in above-mentioned component parts, have at least one to be the injection mo(u)lding thing.
Another technical scheme of the present invention is: a kind of hydraulic damper of roller washing machine includes: the cylinder of hollow, and portion is formed with the grease chamber that can pour into machine oil within it; Be arranged at an end of cylinder, damper is connected to washtub support on the washtub; The piston rod of the metal material that runs through the other end of cylinder and expose; Be arranged on the end of the end that piston rod exposes to the outside of cylinder, damper be connected to the base support on the base of casing; Sliding motion is done in inside at cylinder, and is formed with the piston of a plurality of oilholes on the whole; Be arranged between the end and washtub support of cylinder, prevent the O shape ring that oil leaks; Be arranged at cylinder and be positioned at the inboard of that end of washtub support, in order to the oil seal circle that prevents that oil from leaking; And the inboard that is arranged at cylinder, the straight-line sleeve pipe of support and guiding piston constitutes.Wherein in the component parts of other except that piston rod, have at least one to be the injection molded thing.
The hydraulic damper of roller washing machine of the present invention, by improving the hydraulic damper structure of roller washing machine, it is plastic injection-moulded that the material of its main composition parts can be adopted, and significantly reduced the manufacturing cost of damper.Hydraulic damper of the present invention also can be produced in enormous quantities simultaneously, has therefore improved its production efficiency; The present invention has also improved the reliable in quality degree of whole hydraulic damper by the reliable in quality degree that improves each component parts.
Description of drawings
Fig. 1: the structural representation that is the roller washing machine of prior art;
Fig. 2: the external structure schematic diagram that is hydraulic damper in the roller washing machine of prior art;
Fig. 3: the external structure schematic diagram that is hydraulic damper of the present invention;
Fig. 4 a, Fig. 4 b: be the cross-section illustration intention of Fig. 3 and the partial enlarged drawing of different piston positions.
Wherein:
D: hydraulic damper 1: cylinder
100: grease chamber 110: step trough
120: intercommunicating pore 130: space
2: washtub support 200: connecting ring
3: piston rod 4: base support
400: connecting ring 5: piston
500: oilhole 510: skirt
520: groove 6:O shape ring
7: sleeve pipe 8: the oil seal circle
8a: spring 8b: flange
9: anticreep spare
The specific embodiment
Below, the hydraulic damper to roller washing machine of the present invention makes a detailed description in conjunction with the accompanying drawings.
For the state that is provided with and the part associated therewith that hydraulic damper of the present invention is described, quote the structure of existing roller washing machine at this.
Fig. 3 is the external structure schematic diagram of hydraulic damper of the present invention; Fig. 4 a, Fig. 4 b are the cross-section illustration intention of Fig. 3 and the partial enlarged drawing of different piston positions, and promptly Fig. 4 a has represented the state of piston in rising, the state when Fig. 4 b has represented that piston is positioned at top dead-centre.
As shown in the figure, the hydraulic damper D of first embodiment of the invention comprises: the cylinder 1 of hollow, and portion is formed with the grease chamber 100 that can pour into machine oil within it; Be arranged at an end of cylinder 1, damper is connected to washtub support 2 on the washtub 20; The piston rod 3 that runs through the other end of cylinder 1 and expose; Be arranged on the end that piston rod 3 exposes to the outside of cylinder 1, damper be connected to the base support 4 on the base of casing 10; And do sliding motion in the inside of cylinder 1, and the piston 5 that is formed with a plurality of oilholes 500 on its face constitutes, and in its component parts, has at least one to be the injection mo(u)lding thing.
Promptly in the middle of cylinder 1, washtub support 2, base support 4, piston 5 and the piston rod 3 of hollow, have at least one to be to make by injection mo(u)lding.
Between end of cylinder 1 and washtub support 2, be provided with can prevent cylinder 1 inside oil to the O of external leaks shape ring 6.
Specifically, O shape ring 6 is arranged on screw thread in the inner peripheral surface of washtub support 2 and forms in the groove on the position, when therefore washtub support 2 being connected in an end of cylinder 1, washtub support 2 is clung on the outer peripheral face of cylinder 1.
Be formed with screw thread respectively on the inner peripheral surface of end outer peripheral face of cylinder 1 and washtub support 2, washtub support 2 is by being threadedly connected to an end of cylinder 1 thus.
Also be formed with screw thread on end that piston rod 3 exposes to the outside of cylinder 1 and base support 4, piston 3 and base support 4 combine by being threaded thus.
Be formed with the connecting ring 200,400 of the circle on the base that is connected in washtub 20 and casing 10 on washtub support 2 and the base support 4 respectively.
High strength plastics such as piston rod 3 usefulness engineering plastics or fiber-reinforced plastic are made.
Piston 5 is connected on the piston rod 3 by bolt 80 adding under the state of packing ring.Shown in Fig. 4 a, piston 5 is provided with skirt 510 near the periphery of piston rod 3 one ends, and skirt 510 is not when applying external force, and its external diameter is greater than the internal diameter of cylinder 1, and has internal diameter, and the size of its wall thickness is thin.
Therefore, when piston 5 was arranged at the inside of cylinder 1, skirt 510 was close to the inner peripheral surface of cylinder 1.
On the outer peripheral face of piston 5, along the circumferential direction be formed with the groove 520 of at least one.
In the component parts of hydraulic damper of the present invention, piston 5 sidewalls are done sliding motion along the inner peripheral surface of cylinder 1, therefore consider that anti-wear performance, piston 5 and cylinder 1 should use the thermoplastic resin that adds fluoride resin, the special teflon resin materials such as (Teflon) that for example has self-lubricity is made.
In addition, in the component parts of hydraulic damper, cylinder 1, piston 5, washtub support 2 and base support 4 etc. also can be used POM (polyoxymethylene), PC (Polycarbonate), PBT (Polybutylene Terephthalate), polyacetal etc. have the thermoplastic resin of good heat resistance and resistance to chemical reagents to be made.
The oilhole 500 that is formed on the piston 5 should be formed on around the face central portion of piston 5, but its formation position does not have special restriction.
The other end inboard of cylinder 1 is disposed with and can prevents oil seal circle 8 and the support piston 5 that oil leaks and make piston 5 make straight-line sleeve pipe 7.
More specifically, on the madial wall of cylinder 1 other end, be formed with the step trough 110 that has different inner diameters along the direction of principal axis of cylinder 1; Fixedly be pressed into sleeve pipe 7 on the position of the little internal diameter in inner end of step trough 110; Fixedly be pressed into oil seal circle 8 on the large diameter position, outer end of step trough 110.
Though not expression is formed with projection on the outer peripheral face of oil seal circle 8 in the drawings, the large diameter position that projection can make oil seal circle 8 be close to be inserted in step trough 110.Do not represent that in Fig. 4 a and Fig. 4 b projection is because projection is in elastic deformation, if oil seal circle 8 is taken out, then can see projection from step trough 110.
The arranged outside of the oil seal circle 8 of cylinder 1 has the anticreep spare 9 (stoper) that can prevent that oil seal circle 8 breaks away from from cylinder 1.
At this, use C shape ring as anticreep spare 9 with restoring force.
In addition, consider the draft angle (Draft Angle) of cylinder 1, so its diameter that is positioned at washtub support 2 sides is less than the diameter that is positioned at base support 4 sides.
As above the action principle and the course of work of the hydraulic damper D of the present invention of structure are as follows.
The operation principle of hydraulic damper D of the present invention is: when washing machine washs and during dewatering operation, washtub 20 produces vibration, the piston 5 of damper D is obstructed owing to the oil viscosity of 100 inside, grease chamber that pour into cylinder 1 and moves at this moment, piston 5 is in moving process, suffered resistance diminishes gradually, when resistance was zero, piston 5 stopped.Damper D is according to the vibration of above-mentioned principle decay washtub 20.
Hydraulic damper is being better than friction damper aspect the effect that absorbs vibration.
Hydraulic damper is if use the high oil of viscosity, then the resilience time longer, reflect slower, but the better effects if of its absorption impulsive force.
But,, be unfavorable for absorbing continuous impact if reflection is slower.Hydraulic damper is if use the low oil of viscosity, and its response speed is very fast, but the effect of absorption impulsive force is weaker again.
Below, more detailed description is made in the feature and the effect thereof of each component parts of hydraulic damper D.
At first, need to prove, because the main composition parts such as middle air cylinder 1, washtub support 2, piston 5, piston rod 3 and base support 4 of hydraulic damper D of the present invention are all made with low-cost plastic material, therefore can significantly reduce its manufacturing cost compared with existing hydraulic damper D '.
The main composition parts of hydraulic damper D of the present invention can be produced in enormous quantities by injection mo(u)lding, therefore can improve production efficiency of products, have also improved the reliable in quality degree of each parts in the manufacturing cost that reduces each parts.
Among the hydraulic damper D of the present invention, has suitable slit between the internal diameter of cylinder 1 and the piston 5.
The connecting ring 200 that is formed on the washtub support 2 is sold hydraulic damper D the bottom that is connected in washtub 20; The connecting ring 400 that is formed on the base support 4 is connected in hydraulic damper D pin on the base.
Promptly, after the connecting ring 200 of the connecting portion that forms on the base with washtub 20 and casing 10 and corresponding washtub support 2 and the connecting ring 400 of base support 4 align, connect the steady pin (not shown), hydraulic damper D is connected on the base of washtub 20 and casing 10 with this between.If same those skilled in the art then are easy to associate above-mentioned operation process.
Cylinder 1 combines by being threaded with washtub support 2.At this, washtub support 2 plays the effect of the metal cap of cylinder 1.
The end and the O shape between the washtub support 2 that are arranged at cylinder 1 encircle 6 when washtub support 2 is connected cylinder 1 one ends, can be close on the cylinder 1 one end outer peripheral faces, therefore can prevent effectively that the oil of cylinder 1 inside is to external leaks.
The inner peripheral surface screw threads that O shape ring 6 is arranged at washtub support 2 form in the groove on the position, and when therefore being connected in washtub support 2 on the cylinder 1, O shape ring 6 can be close on the outer surface of cylinder 1 this end, with this oil that prevents cylinder 1 inside to external leaks.
As above, its cylinder 1 of hydraulic damper D of the present invention is by the structure combining that is threaded with washtub support 2.
Therefore, can open-and-shutly finish the assembling between cylinder 1 and the washtub support 2, also can conveniently decompose cylinder 1 and washtub support 2 simultaneously, when discarding hydraulic damper, can conveniently take out the oil of its inside, also can change piston 5 parts such as grade simultaneously easily.
Also being formed with screw thread on the end of that end that piston rod 3 exposes to the outside of cylinder 1 and base support 4, also is to combine by being threaded between the two therefore.
Because piston rod 3 is directly accepted the vibration of washtub 20, the load that is applied to it is very heavy, so high strength plastic productions such as piston rod 3 employing engineering plastics or fiber-reinforced plastic, makes piston rod 3 stable support washtubs 20 with this, absorbs vibration simultaneously.
For the groove on the outer peripheral face that along the circumferential direction is formed at piston 5 520, irritate under the state that oil is arranged in the inside of groove 520, piston 5 is done sliding motion, therefore plays the effect of labyrinth packing (labyrinth), and the oil that reduces between piston 5 and the cylinder 1 leaks.
For piston 5 and cylinder 1,, therefore adopt with the thermoplastic resin that adds fluoride resin and make, so have good ABRASION RESISTANCE because piston 5 is done sliding motion in the inside of cylinder 1.If piston 5 and cylinder 1 are made by the resin that special teflon etc. has self-lubricity, then has good ABRASION RESISTANCE more.
In the component parts of hydraulic damper, because cylinder 1, piston 5, washtub support 2 and base support 4 etc. with thermoplastic resin manufacturings such as POM, PC, PBT, polyacetal, therefore all have good heat resistance and resistance to chemical reagents.
A plurality of oilholes 500 on the piston 5 are formed at around the central portion of piston 5 sidewalls with radiation shape.Because the size of oilhole 500 and quantitative relation are to the damping capacity of hydraulic damper, so its design is wanted suitably.
The other end inboard of cylinder 1 is disposed with and prevents oil seal circle 8 and the support that oil leaks and guide piston 5 to make straight-line sleeve pipe 7.
The other end inboard of cylinder 1 is formed with the step trough 110 with different inner diameters along the direction of principal axis of cylinder.The little internal diameter position, inner end of step trough 110 fixedly is pressed into the sleeve pipe 7 of metal material, and the large diameter position, the outside of step trough 110 is provided with oil seal circle 8.
Though not expression is formed with projection on the outer peripheral face of oil seal circle 8 in the drawings, when oil seal circle 8 was inserted in the large diameter position of step trough 110, projection can be close on the inner peripheral surface at large diameter position of step trough 110.When oil seal circle 8 is freed external pressure and is recovered former state, can observe projection, this situation was narrated in front.
Be provided with anticreep spare 9 at the downside of the oil seal circle 8 of cylinder 1, can prevent that therefore oil seal circle 8 breaks away from from cylinder 1 as C shape ring.
Except that the method that anticreep spare 9 is set, also can reach the effect that prevents that oil seal circle 8 breaks away from by the diameter of axle that dwindles cylinder 1 self, will narrate in the back this.
For cylinder 1 of the present invention, its diameter that is positioned at washtub support 2 positions is less than the diameter that is positioned at base support 4 positions, therefore when piston 5 when the direction of washtub support 2 moves, come reducing of compensate for attenuation power by the slit that dwindles between piston 5 and the cylinder 1.
This is because the draft angle when considering injection mo(u)lding cylinder 1, also is simultaneously that the damping force of hydraulic damper diminishes when reducing piston 5 work.
Below, another embodiment of the present invention is explained.
Because the geometry of the component parts of its hydraulic damper D is identical with aforesaid embodiment, therefore, at this still with reference to Fig. 3 to Fig. 4 b.
The hydraulic damper D of another embodiment of the present invention is by the cylinder 1 of hollow, and portion is formed with the grease chamber 100 that can pour into machine oil within it; Be arranged at an end of cylinder 1, damper is connected to washtub support 2 on the washtub 20; The piston rod 3 of the metal material that runs through the other end of cylinder 1 and expose; Be arranged on the end of this end that piston rod 3 exposes to the outside of cylinder 1, and damper be connected to base support 4 on the base of casing 10; And do sliding motion in the inside of cylinder 1, and the piston 5 that is formed with a plurality of oilholes 500 on its face constitutes, and wherein in other component parts except that piston rod 3, has at least one to be the injection mo(u)lding thing.
At this, different with a last embodiment, in the component parts of damper of the present invention, the piston rod 3 that is directly bearing load requires that extra high intensity is arranged, so piston rod 3 is made also harmless with the metal material that generally used in the past.
That is, in the present embodiment, in order to ensure the higher reliability of piston rod 3, piston rod 3 is with the high metal manufacturing of case hardnesses such as carbon steel.In order to prevent the surface oxidisation of piston rod 3, under the hot conditions more than 500 degree, piston rod 3 is spread carburizing surface heats such as (TUFFTRIDE) handle.
The piston rod 3 of metal material with being connected of base support 4 is: at first with piston rod 3 and after the piston 5 that the inside of cylinder 1 is provided with is assembled, connect with the plug-in unit injection molding way again.
In a last embodiment, piston rod 3 was finished with being connected by being threaded of base support 4.But when this need to prove that piston rod 3 and base support 4 all are made of plastic material, both can be one-body molded.
In addition, when cylinder 1 all was made of plastic material with washtub support 2, both also can be one-body molded.
When base support 4 and rolling stand 2 all constitute with plastic material at least, form screw thread on the washtub support 2 of formation connecting ring and the terminal periphery of base support 4, by screw thread damper D is connected on the base of washtub 20 and casing 10.That is, the operator catches the damper that is combined with washtub support 2 and rotates or rotating base support 4 at this moment, damper is connected between washtub 20 and the base by the mode that is threaded with this.
As above, when two parts are produced as one, can reduce corresponding parts assembling procedure on the production line.
Different with the foregoing description, the end that combines with washtub support 2 of cylinder 1 and washtub support 2 can form double thread and be connected favourable hexagon prism shape.
In embodiments of the present invention, hydraulic damper D has given title with " washtub support " and " base support " to its component parts, therefore seem the link position of the base of washtub 20 and casing 10 having been reserved hydraulic damper D, but the behave that this just distinguishes for convenience, its washtub support 2 can turn around with the link position of base support 4.That is, in the present invention, the direction that is provided with of hydraulic damper D has no particular limits.
Used the C shape ring as anticreep spare 9 in the present invention, it can prevent that oil seal circle 8 breaks away from from cylinder 1.The method that dwindle its internal diameter this moment after also can the base support side end heat fusing by the cylinder 1 that will constitute with resin again realizes that oil seal circle 8 is not broken away from.Certainly the internal diameter after this dwindles is less than the external diameter of oil seal circle 8, and therefore can reach oil seal circle 8 by the inner end diameter of dwindling cylinder itself can be from the purpose of cylinder 1 disengaging.
That is, inserting under the state of anticreep spare 9, dwindling the internal diameter of cylinder 1, then the end of the reduced cylinder 1 of internal diameter plays the effect that oil seal circle 8 is not broken away from.
Hydraulic damper D as above of the present invention is not confined to be used in the scope of roller washing machine.In other words, hydraulic damper D of the present invention can be used in every needs buffering and absorb on other household electrical appliance and industry machine of vibration.
Claims (31)
1. the hydraulic damper of a roller washing machine includes the cylinder (1) of hollow, and portion is formed with the grease chamber (100) that can pour into oil within it; Run through and expose the piston rod (3) of an end of cylinder (1); It is characterized in that, also include: be arranged at the other end of cylinder (1), be used for damper is connected to washtub support (2) on the washtub (20); Be arranged on that end that exposes cylinder (1) of piston rod (3), be used for damper is connected to base support (4) on the base of casing (10); And do sliding motion in the inside of cylinder (1), and be connected piston rod (3) and be positioned on that end of cylinder (1), and the piston (5) that is formed with a plurality of oilholes (500) on its face constitutes, and wherein in above-mentioned component parts, has at least one to be the injection mo(u)lding thing.
2. the hydraulic damper of roller washing machine according to claim 1 is characterized in that, is provided with the O shape ring (6) that can prevent that oil from leaking between end of cylinder (1) and washtub support (2).
3. the hydraulic damper of roller washing machine according to claim 2, it is characterized in that, described O shape ring (6) is arranged on groove (520) lining outside the screw thread formation portion of washtub support (2) inner peripheral surface, when washtub support (2) was connected to an end of cylinder (1), O shape ring (6) was close on the outer peripheral face of this end of cylinder (1).
4. the hydraulic damper of roller washing machine according to claim 1, it is characterized in that, the corresponding screw thread that is formed with on the outer peripheral face of described cylinder (1) one end and washtub support (2) inner peripheral surface, cylinder (1) combines by being threaded with washtub support (2) thus.
5. the hydraulic damper of roller washing machine according to claim 1 is characterized in that, the end that piston rod (3) exposes to the outside of cylinder (1) combines by being threaded with base support (4).
6. the hydraulic damper of roller washing machine according to claim 1 is characterized in that, described piston (5) is connected with piston rod (3) by bolt (80).
7. the hydraulic damper of roller washing machine according to claim 1 is characterized in that, piston (5) be positioned at base support (4) one ends around be formed with its external diameter himself also has internal diameter greater than the internal diameter of cylinder (1) skirt (510).
8. the hydraulic damper of roller washing machine according to claim 1 is characterized in that, along the circumferential direction is formed with a groove (520) on the outer peripheral face of piston (5) at least.
9. the hydraulic damper of roller washing machine according to claim 1 is characterized in that, described cylinder (1) and piston (5) adopt the special teflon of the resin material with self-lubricity to make.
10. the hydraulic damper of roller washing machine according to claim 1, it is characterized in that described cylinder (1), piston (5), washtub support (2) and base support (4) all adopt thermoplastic resin POM with heat resistance and resistance to chemical reagents or a kind of the making among PC or PBT or the polyacetal.
11. the hydraulic damper of roller washing machine according to claim 1 is characterized in that, described piston rod (3) adopts a kind of the making in engineering plastics or the fiber-reinforced plastic.
12. the hydraulic damper of roller washing machine according to claim 1, it is characterized in that the inboard that is positioned at base support (4) one ends at cylinder (1) is disposed with the straight-line sleeve pipe (7) that can prevent the oil seal circle (8) that oil leaks and support and guide piston (5).
13. the hydraulic damper of roller washing machine according to claim 1, it is characterized in that, be positioned at base support (4) one end inboards at cylinder (1) and axially be formed with step trough (100) with different inner diameters, fixedly be pressed into the sleeve pipe (7) of metal material on the little internal diameter position, inner end of step trough (100), the large diameter position, outer end of step trough (100) is provided with oil seal circle (8).
14. the hydraulic damper of roller washing machine according to claim 12, it is characterized in that, described sleeve pipe (7) axially is separated with spacing with oil seal circle (8), is being formed with the intercommunicating pore (120) that is communicated with the space (130) between grease chamber (100) and sleeve pipe (7) and the oil seal circle (8) on the cylinder (1).
15. the hydraulic damper of roller washing machine according to claim 12 is characterized in that, described sleeve pipe (7) is made with a kind of material in copper or the iron.
16. the hydraulic damper of roller washing machine according to claim 12 is characterized in that, the inner peripheral surface of described sleeve pipe (7) carries out special teflon and smears processing in order to improve its ABRASION RESISTANCE.
17. the hydraulic damper of roller washing machine according to claim 12 is characterized in that, described sleeve pipe (7) is made with the mode oil impregnate of sintering.
18. the hydraulic damper of roller washing machine according to claim 12 is characterized in that, is provided with the spring (8a) of oil seal circle (8) being close to piston rod (3) outer peripheral face in the inside of oil seal circle (8).
19. the hydraulic damper of roller washing machine according to claim 12 is characterized in that, is formed with a flange (8b) of being close to piston rod (3) outer peripheral face on the inner peripheral surface of oil seal circle (8) at least.
20. the hydraulic damper according to claim 12 or 13 described roller washing machines is characterized in that, the anticreep spare (9) that can prevent that oil seal circle (8) breaks away from from cylinder (1) is arranged in the arranged outside of oil seal circle (8).
21. the hydraulic damper of roller washing machine according to claim 20 is characterized in that, described anticreep spare (9) is a C shape ring-type.
22. the hydraulic damper of roller washing machine according to claim 20, it is characterized in that, described cylinder (1) is positioned at the diameter at washtub support (2) position greater than the diameter that is positioned at base support (4) position, comes diminishing of compensation mount support (4) position damping force with this by the slit that dwindles between piston (5) and the cylinder (1).
23. the hydraulic damper of roller washing machine according to claim 1, it is characterized in that described piston rod (3) is integrally formed with being incorporated into base support (4) on the end that piston rod (3) exposes to the outside of cylinder (1) and that damper is connected on the base of casing (10).
24. the hydraulic damper of roller washing machine according to claim 1 is characterized in that, described cylinder (1) is integrally formed with the washtub support (2) that damper is connected on the washtub (20).
25. the hydraulic damper of roller washing machine according to claim 1 is characterized in that, described piston rod (3) adopts metal material to make.
26. the hydraulic damper of roller washing machine according to claim 1 is characterized in that, described piston rod (3) adopts carbon steel to make.
27. the hydraulic damper of roller washing machine according to claim 25 is characterized in that, in order to prevent piston rod (3) surface oxidisation, under the hot conditions more than 500 degree tufftridy is carried out on the surface of piston rod (3) and is handled.
28. the hydraulic damper of roller washing machine according to claim 1 is characterized in that, described piston rod (3) combines by utilizing hyperacoustic heat fused to finish with base support (4).
29. the hydraulic damper of roller washing machine according to claim 1, it is characterized in that, the position diameter that described piston rod (3) combines with base support (4) is made the big shape of diameter than other positions of piston rod (3), then piston rod (3) is combined by heat fused with base support (4).
30. the hydraulic damper of roller washing machine according to claim 12, it is characterized in that, behind the terminal heat fusing that is positioned at base support (4) side of employing with cylinder (1), the method that again its internal diameter is contracted to less than oil seal circle (8) external diameter realizes that oil seal circle (8) does not break away from.
31. the hydraulic damper of a roller washing machine includes: the cylinder of hollow (1), it is characterized in that cylinder (1) is an injection molded, portion is formed with the grease chamber (100) that can pour into machine oil within it; Be arranged at an end of cylinder (1), damper is connected to washtub support (4) on the washtub (20), it is an injection molded; The piston rod (3) of the metal material that runs through the other end of cylinder (1) and expose; Be arranged on the end of the end that piston rod (3) exposes to the outside of cylinder, damper be connected to the base support (4) on the base of casing, it is an injection molded; Sliding motion is done in inside at cylinder (1), and is formed with the piston (5) of a plurality of oilholes (500) on the whole, and it is an injection molded; Be arranged between the end and washtub support (2) of cylinder (1), prevent the O shape ring (6) that oil leaks; Be arranged at cylinder (1) and be positioned at the inboard of that end of washtub support (4), in order to the oil seal circle (8) that prevents that oil from leaking; And the inboard that is arranged at cylinder (1), the straight-line sleeve pipe (7) of support and guiding piston (5) constitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510013753 CN1876937A (en) | 2005-06-10 | 2005-06-10 | Hydraulic damper of drum washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510013753 CN1876937A (en) | 2005-06-10 | 2005-06-10 | Hydraulic damper of drum washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1876937A true CN1876937A (en) | 2006-12-13 |
Family
ID=37509476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510013753 Pending CN1876937A (en) | 2005-06-10 | 2005-06-10 | Hydraulic damper of drum washing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1876937A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104195789A (en) * | 2014-09-02 | 2014-12-10 | 合肥荣事达三洋电器股份有限公司 | Vibration reduction system of impeller full-automatic washing machine |
| CN108660686A (en) * | 2017-03-27 | 2018-10-16 | 青岛海尔洗衣机有限公司 | Damper and washing machine including the damper |
| CN109972350A (en) * | 2014-03-11 | 2019-07-05 | Lg电子株式会社 | Device for processing washings |
| CN112900000A (en) * | 2021-01-15 | 2021-06-04 | 珠海格力电器股份有限公司 | Drum washing machine |
-
2005
- 2005-06-10 CN CN 200510013753 patent/CN1876937A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109972350A (en) * | 2014-03-11 | 2019-07-05 | Lg电子株式会社 | Device for processing washings |
| CN109972350B (en) * | 2014-03-11 | 2021-06-22 | Lg电子株式会社 | Laundry treatment apparatus |
| CN104195789A (en) * | 2014-09-02 | 2014-12-10 | 合肥荣事达三洋电器股份有限公司 | Vibration reduction system of impeller full-automatic washing machine |
| CN104195789B (en) * | 2014-09-02 | 2016-08-17 | 惠而浦（中国）股份有限公司 | A kind of impeller automatic washing machine vibration insulating system |
| CN108660686A (en) * | 2017-03-27 | 2018-10-16 | 青岛海尔洗衣机有限公司 | Damper and washing machine including the damper |
| CN108660686B (en) * | 2017-03-27 | 2021-05-25 | 青岛胶南海尔洗衣机有限公司 | Damper and washing machine including the same |
| CN112900000A (en) * | 2021-01-15 | 2021-06-04 | 珠海格力电器股份有限公司 | Drum washing machine |
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