CN214529777U - Double-drum washing machine - Google Patents

Abstract

The utility model provides a binocular washing machine, include: a box body; the two cylinders comprise an upper cylinder arranged in the box body and a lower cylinder arranged below the upper cylinder at intervals; and the upper end of the spring shock absorber is connected with the upper cylinder or the lower cylinder, and the lower end of the spring shock absorber is connected with the box body and used for reducing the vibration transmitted to the box body by the upper cylinder or the lower cylinder. The utility model provides a double-drum washing machine has replaced the combination setting of hanging spring and friction shock absorber among traditional double-drum washing machine through spring damper's setting, has reduced the transmission route of barrel vibration to the box, has avoided the atress at the weak position of box simultaneously to the vibration noise problem of effectual solution box.

Description

Double-drum washing machine

Technical Field

The utility model belongs to the technical field of domestic appliance, especially, relate to a binocular washing machine.

Background

The existing double-drum washing machine can generate strong vibration when a drum works, and the damage to parts of the washing machine is great, so that the service life of the washing machine is shortened. In the related art, a suspension spring is generally disposed at an upper end of each drum, a friction damper is disposed at a lower end of each drum, and a suspension system formed by combining the suspension spring and the friction damper damps vibration of the dual drum washing machine.

However, the arrangement of such a suspension system firstly increases the number of connection points between the vibration assembly (the barrel assembly) and the box body, so that the vibration of the vibration assembly is transmitted to the box body through more transmission paths, and the box body has more stress points and needs to bear more force; moreover, the upper end of the upper roller is connected with the upper part of the box body through a suspension spring, the stress point of the box body is close to the upper part, compared with the lower part, the rigidity of the upper part of the box body is weaker, and the vibration effect generated after stress is more obvious. Therefore, the existing suspension system increases the vibration risk of the whole machine to a certain extent and is easy to generate the problem of vibration noise.

SUMMERY OF THE UTILITY MODEL

The utility model provides an above-mentioned technical problem, provide a binocular washing machine, reduced the stress point of box, have the little advantage of vibration noise at the laundry in-process.

In order to achieve the purpose, the invention adopts the technical scheme that:

a dual drum washing machine comprising:

a box body;

the two cylinders comprise an upper cylinder arranged in the box body and a lower cylinder arranged below the upper cylinder at intervals; and

and the upper end of the spring shock absorber is connected with the upper barrel or the lower barrel, and the lower end of the spring shock absorber is connected with the box body and used for reducing the vibration transmitted to the box body by the upper barrel or the lower barrel.

The utility model provides a double-drum washing machine has replaced the combination setting of hanging spring and friction shock absorber among traditional double-drum washing machine through spring damper's setting, has reduced the transmission route of barrel vibration to the box, has avoided the atress at the weak position of box simultaneously to the vibration noise problem of effectual solution box.

According to some embodiments of the present application, at least one of the cylinders is damped only by the spring damper provided at the lower end thereof. Ensure the utility model discloses the hanging spring of at least cancellation barrel hangs the setting, reduces the tie point of barrel and box to effectively alleviate the vibration noise problem of box.

According to some embodiments of the application, the spring damper comprises:

the sleeve is a vibration reduction cavity with an opening at the top end, and the bottom end of the sleeve is connected with the box body through a connecting column;

the top end of the piston rod is connected with the upper cylinder or the lower cylinder, the bottom end of the piston rod is inserted into the vibration reduction cavity from the opening of the vibration reducer casing pipe, and the piston rod can slide up and down relative to the vibration reduction cavity;

the damping block is positioned in the vibration attenuation cavity and is fixedly connected with the piston rod; and

and the spring is positioned above the shock absorber sleeve and sleeved outside the piston rod.

The spring shock absorber provided by the utility model has the damping function and the elastic damping function simultaneously, which is beneficial to reducing the vibration noise and reducing the vibration amplitude of the box body; and the structure is simple, and the production cost is low.

According to some embodiments of the present application, the damping chamber has a damping substance therein. Make the utility model provides a spring damper possesses damping vibration attenuation function to reduce the influence of barrel vibration to the box.

According to some embodiments of the present application, the open end of the damping chamber is provided with a spring stopper having a stepped hole in the center thereof through which only the piston rod passes. The bottom position of spring can be fixed in the setting of spring backstop board, when guaranteeing the barrel vibration, the spring can be compressed and produce the resilience force, makes the utility model provides a spring damper possesses the elasticity damping function, further reduces the influence of barrel vibration to the box.

According to some embodiments of the application, a rubber block is disposed between the top end of the piston rod and the barrel, and the spring is defined between the rubber block and the spring stop plate. The setting of block rubber can play the shock attenuation cushioning effect, further reduces the influence of barrel vibration to spring damper, and then reduces the vibration range and the noise of box.

According to some embodiments of the application, the bottom of spliced pole has the screw thread, the box with spliced pole correspondence is equipped with the screw, the spliced pole spiro union in on the box. This connected mode is favorable to strengthening being connected of spring damper and box, is convenient for realize spring damper's installation dismantlement simultaneously.

According to some embodiments of the application, the screw post outside cover is equipped with the rubber pad, the rubber pad is located the sleeve pipe bottom with between the screw thread. The rubber pad sets up and can play shock attenuation cushioning effect, further reduces the barrel vibration to the influence of box, reduces the vibration range of box.

According to some embodiments of the present application, the number of the spring damper connected to the upper cylinder or the lower cylinder is limited to 2-4. Further reduce the tie point of barrel and box, reduced the transmission route of barrel vibration to the box, and then reduced the range and the noise of box vibration.

According to some embodiments of the present application, the spring dampers are each disposed obliquely outward such that a distance between a bottom end thereof and a longitudinal centerline of the case is greater than a distance between a top end thereof and the longitudinal centerline of the case. The inclined design of the spring damper can ensure that the spring damper can absorb the energy of the up-and-down vibration of the barrel and also can buffer the amplitude of the left-and-right swinging of the barrel during vibration, the damping force of the spring damper can be properly reduced, so that the washing machine has lower vibration frequency and smaller swinging amplitude during high-speed operation, and the eccentric load resistance and the vibration absorption rate of the washing machine are favorably improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a dual drum washing machine according to the prior art;

fig. 2 is a schematic structural view of a dual drum washing machine according to a first embodiment of the present invention;

fig. 3 is a schematic structural view of a dual-drum washing machine according to a second embodiment;

fig. 4 is a schematic structural view of a dual-drum washing machine according to a third embodiment of the present invention;

fig. 5 is a schematic structural view of a spring damper according to the present embodiment;

fig. 6 is a sectional view of the spring damper according to the present embodiment.

In the above figures: 01. a suspension spring; 02. a friction damper; 1. a box body; 11. a middle cross beam; 12. a base; 21. an upper cylinder body; 22. a lower cylinder body; 3. a drum; 4. a spring damper; 40. connecting columns; 41. a sleeve; 411 a damping mass; 412. a spring stopper plate; 42. a piston rod; 421. a stopper wall; 43. a spring; 44. a rubber block; 45. and (7) a rubber pad.

Detailed Description

The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

FIG. 1 is a schematic diagram of a dual drum washing machine according to the prior art; fig. 2 is a schematic structural view of a dual drum washing machine according to a first embodiment of the present invention; fig. 3 is a schematic structural view of a dual-drum washing machine according to a second embodiment; fig. 4 is a schematic structural diagram of a dual-drum washing machine according to a third embodiment of the present invention.

Referring to fig. 2 to 4, the dual drum washing machine according to the present embodiment includes:

the washing machine comprises a machine shell, a box body 1 is arranged in the machine shell, a door body (not shown in the figure) is usually connected to the box body 1, the door body is pivotally connected to the box body, and clothes can be inserted into or taken out of the washing machine by opening the door body;

two cylinders, both of which are fixedly installed in the cabinet 1, for containing washing water; wherein, the upper cylinder 21 is positioned above the whole machine of the box body 1, and the lower cylinder 22 is positioned below the whole machine. The upper cylinder 21 and the lower cylinder 22 are all provided with a preset distance from the box body 1. The two corresponding door bodies are also arranged and are respectively arranged corresponding to the two cylinder bodies.

Two drums 3 rotatably installed in the two drums, respectively, and defining a side having a door as a front side of the washing machine, such that each front side of the drum 3 has an inlet, which can be opened or closed by pivoting the door, and when the door is rotated to open the inlet, laundry can be inserted into or taken out of the drum 3, and when the door is rotated to close the inlet, the washing machine can enter a washing mode; the drum 3 has a plurality of through holes through which the washing water in the drum may be introduced into the drum 3, and the drum 3 may affect the drum to generate vibration and noise during the rotation.

In order to alleviate the vibration problem of the washing machine, as shown in fig. 1, the opposite sides of the upper end of an upper cylinder 21 are connected to the lower surface of the top of a cabinet 1 through a suspension spring 01, and the opposite sides of the lower end of the upper cylinder 21 are connected to a middle cross beam 11 of the cabinet 1 through a friction damper 02 (the middle cross beam 11 is located between the upper cylinder 21 and a lower cylinder 22); and the opposite sides of the upper end of the lower cylinder 22 in the conventional double cylinder washing machine are also connected to the lower surface of the cross beam 11 in the cabinet 1 by the suspension spring 01, and the opposite sides of the lower end of the lower cylinder 22 are connected to the upper surface of the base 12 of the cabinet 1 (the base 12 is located at the bottom end of the cabinet 1) by the friction damper 02. The suspension system formed by combining the suspension spring 01 and the friction shock absorber 02 can weaken the vibration and noise transmitted from the cylinder to the box body 1; however, the above suspension system firstly increases the number of the connection points of the cylinder and the box 1, so that the vibration of the cylinder is transmitted to the box 1 through more transmission paths, that is, the box 1 has more stress points and needs to bear more force; furthermore, the upper end of the upper cylinder 21 is connected with the top of the box 1 through the suspension spring 01, so that the stress point of the box 1 is close to the upper part, and the upper part and the lower part of the box 1 are weaker in rigidity, and the vibration effect generated after stress is more obvious. In conclusion, the suspension system increases the vibration risk of the whole machine to a certain extent, and the problem of vibration noise is more easily caused.

This application is innovated binocular washing machine's suspension, it is many to current binocular washing machine suspension transfer path, it is high to hang the position, the barrel is connected and can cause the big problem of box 1 vibration noise in the weak region of box 1 upper portion rigidity, the novelty provides a brand-new binocular suspension scheme, through using spring shock absorber, the suspension scheme has been redesigned, the transfer path of barrel vibration to box 1 has been reduced, the atress of 1 weak position of box has been avoided, thereby the effectual 1 vibration noise problem of solution box.

In order to better reduce the stress points of the double-drum washing machine box body 1 and reduce the vibration and noise generated in the washing process of the washing machine, the following technical means can be realized, or the following technical means can be combined:

with continued reference to fig. 2-4, the present embodiment damps vibrations by providing a spring damper 4 and a housing 1. The upper end of the spring shock absorber 4 is connected with the upper cylinder 21, and the lower end is connected with the middle cross beam 11; or the upper end of the spring damper 4 is connected with the lower cylinder 22, and the lower end is connected with the base 12. In the embodiment, the combination of at least one barrel upper hanging spring 01 and a friction damper 02 is replaced by the arrangement of the spring damper 4, so that the stress point of the box body 1 is reduced, and the vibration and the noise of the washing machine in the washing process are reduced.

Fig. 5 is a schematic structural view of a spring damper according to the present embodiment, and fig. 6 is a sectional view of the spring damper according to the present embodiment.

Specifically, as shown in fig. 5 to 6, the spring damper 4 includes:

(variable damping Structure of spring absorber 4)

The sleeve 41 has a vibration damping chamber therein with an open top end, and a substance for providing a damping force is provided in the vibration damping chamber. The axial extension direction of the sleeve 41 is defined as the vertical direction, the lower end of the sleeve 41 is provided with a connecting column 40 with a bottom end provided with threads, the middle cross beam 11 or the base 12 is provided with a screw hole, and the spring damper 4 is fastened and installed through the threaded connection of the connecting column 40 and the box body 1.

The damping block 411 is positioned in the sleeve 41 and is arranged close to the opening end of the sleeve, the damping block can move in the vibration damping cavity under stress, and substances in the vibration damping cavity can provide damping force in the process that the damping block moves downwards, so that the friction vibration absorber is replaced to provide resistance, and the influence of the vibration of the cylinder on the box body 1 is reduced.

(elastic support Structure of spring damper 4)

The upper end of the piston rod 42 is connected with the box body 1, the lower end of the piston rod 42 penetrates through the opening of the vibration damping cavity to enter the vibration damping cavity to be connected with the damping block, and when the cylinder body vibrates, the spring shock absorber transmits pressure to the damping block through the piston rod 42 to push the damping block to move, so that the spring shock absorber 4 provides damping force to reduce vibration transmission force.

And the spring 43 is sleeved outside the piston rod 42, and the spring 43 is sleeved outside the piston rod 42. The opening at the upper end of the sleeve 41 has a spring stopper 412 having a stepped hole at the center thereof through which only the piston rod 42 passes. The diameter of the spring 43 is limited to be smaller than or equal to the diameter of the sleeve 41, and the diameter of the stepped hole is limited to be smaller than the size of the spring 43, so that the spring stop plate 412 can stop the spring 43. The top position of piston rod 42 under spring 43 natural state is provided with the backstop wall 421, the piston rod 42 atress downstream in-process, backstop wall 421 plays the production extrusion to spring 43, this embodiment can form supporting role to the barrel through the deformation effect that resets of spring 43 self, thus, the washing machine barrel is in the motion process, its vibration signal passes through spring damper 4 and transmits to washing machine box 1 on, and spring damper 4 can pass through the damping vibration attenuation effect and the elastic vibration attenuation effect of self, reduce the vibration noise signal, and simultaneously, the transmission of vibration signal through hanging the spring to box 1 has been avoided, reduce the vibration range of box 1.

(vibration damping connection structure of spring vibration damper 4)

And the rubber block 44 is arranged at the upper end of the spring damper 4 and used for further reducing the transmission of vibration force of the cylinder to the spring damper 4 and reducing the vibration noise of the box body 1.

For example, the rubber block 44 at the upper end of the spring damper 4 may be sleeved outside the piston rod 42, and the lower end of the rubber block is fixedly connected to the stopper wall, and the axial length of the rubber block is limited to be greater than the axial length of the piston rod 42 above the stopper wall, so as to ensure that only the rubber pad with good elasticity directly receives the vibration of the cylinder, and then the vibration is indirectly transmitted to the piston rod 42, thereby avoiding the direct contact between the piston rod 42 and the cylinder, and further reducing the vibration amplitude of the spring damper 4.

The rubber pad 45 is arranged at the lower end of the spring damper 4, sleeved on the outer side of the connecting column 40, located between the threads and the damper sleeve 41, and used for playing a role of buffering when the middle cross beam 11 or the base 12 of the box body 1 connected with the spring damper 4 is stressed, further reducing the vibration amplitude of the box body 1 and reducing vibration noise.

Further, as shown in fig. 2 to 4, each spring damper 4 is assembled while being inclined outward at a certain angle such that the distance between the bottom end thereof and the longitudinal center line of the case 1 is greater than the distance between the top end thereof and the longitudinal center line of the case 1. The design can ensure that the spring shock absorber 4 can absorb the energy of the up-and-down vibration of the barrel body and also can buffer the amplitude of the left-and-right swinging of the barrel body during vibration when the washing machine operates, the damping force of the spring shock absorber 4 can be properly reduced, the vibration frequency of the washing machine during high-speed operation is lower, the swinging amplitude is smaller, and the unbalance loading resistance and the vibration absorption rate of the washing machine are greatly improved.

In the embodiment, the number of the spring dampers 4 is not suitable to be too many, on one hand, because the length of the casing is limited, too many spring dampers 4 cannot be placed; on the other hand, too many spring dampers 4 are provided to increase the connection points of the cylinder case 1 or the base 12, and to increase the output path of the cylinder vibration force. Therefore, the number of the spring damper 4 connected to the lower end of each cylinder is preferably 2 to 4 on the premise of satisfying the balance and stability of the cylinder.

It should be noted that the structure of the spring damper shown in fig. 5-6 only represents one structural form of the spring damper, and the present invention is not limited to this structural form of the spring damper, and only the spring damper disposed below the cylinder has the supporting and damping effects.

In order to reduce the stress point of the upper part of the box body 1 and reduce the vibration amplitude and noise of the box body 1, the following three embodiments are specifically provided, and the embodiments provided by the present application will be specifically described with reference to fig. 2 to 4.

Implementation mode one

As shown in fig. 2, the lower cylinder 22 in the first embodiment is not changed by the combined damping form of the suspension spring 01 and the friction damper 02 in the conventional double-cylinder washing machine, but the suspension spring 01 connected between the upper end of the upper cylinder 21 and the cabinet 1 in the conventional double-cylinder washing machine is eliminated, and the spring damper 4 is used to replace the friction damper 02 connected between the bottom end of the upper cylinder 21 and the middle cross beam 11 of the cabinet 1 in the conventional double-cylinder washing machine. It should be understood that the present embodiment does not limit the number of the suspension springs 01, the friction dampers 02, and the spring dampers 4, and only needs to satisfy the supporting and damping effects for the upper cylinder 21 and the lower cylinder 22.

This design allows the entire upper cylinder 21 to be supported on the case 1 by the spring damper 4, instead of the upper cylinder 21 being hung on the case 1 by the suspension spring 01 in fig. 1. Compared with the scheme of the suspension system in the figure 1, the scheme of the suspension system reduces the connection points of the suspension system at the upper end of the upper cylinder 21 and reduces the output path of force, and meanwhile, because the top of the box body 1 is not provided with the connection points, namely, the weak part of the structural rigidity of the box body 1 is not stressed any more, the transmission of the vibration force from the upper cylinder 21 to the box body 1 is improved, the stress of the weak part of the box body 1 is avoided, and the scheme of the suspension system is a great benefit for improving the vibration noise of the whole machine.

Second embodiment

As shown in fig. 3, the upper cylinder 21 of the second embodiment is not changed by the combined damping form of the suspension spring 01 and the friction damper 02 of the conventional double-cylinder washing machine, but the suspension spring 01 connected between the upper end of the lower cylinder 22 and the cross beam 11 of the cabinet 1 of the conventional double-cylinder washing machine is eliminated, and the spring damper 4 is used to replace the friction damper 02 connected between the bottom end of the lower cylinder 22 and the base 12 of the conventional double-cylinder washing machine. It should be understood that the present embodiment does not limit the number of the suspension springs 01, the friction dampers 02, and the spring dampers 4, and only needs to satisfy the supporting and damping effects for the upper cylinder 21 and the lower cylinder 22.

This design allows the entire lower cylinder 22 to be supported on the base 12 by the spring damper 4, instead of the lower cylinder 22 being hung on the cabinet 1 by the suspension spring 01 in fig. 1. Compared with the suspension system scheme of fig. 1, the suspension system scheme reduces the suspension system connection points at the upper end of the lower cylinder 22 and reduces the force output path, thereby improving the transmission of the vibration force from the lower cylinder 22 to the box body 1 and being beneficial to improving the vibration noise of the whole machine.

Third embodiment

As shown in fig. 4, in both the upper cylinder 21 and the lower cylinder 22 of the third embodiment, the suspension spring 01 connected between the upper end of the cylinder and the cabinet 1 in the conventional double-cylinder washing machine is eliminated, and the spring damper 4 is used instead of the friction damper 02 connected between the bottom end of the upper cylinder 21 and the cross beam 11 in the cabinet 1 and the friction damper 02 connected between the bottom end of the lower cylinder 22 and the base 12 in the conventional double-cylinder washing machine. It should be understood that the present embodiment does not limit the number of the spring dampers 4, and only needs to satisfy the supporting and damping effects for the upper cylinder 21 and the lower cylinder 22.

This design allows both the upper cylinder 21 and the lower cylinder 22 to be supported on the case 1 or the base 12 through the spring damper 4, rather than being hung on the case 1 through the suspension spring 01. Compared with the suspension system scheme in the figure 1, the suspension system scheme greatly reduces the suspension system connection points between the cylinder and the box body 1, reduces the output path of force, and simultaneously improves the transmission of the vibration force from the cylinder to the box body 1, avoids the stress of the fragile part of the box body 1 and is beneficial to improving the vibration noise of the whole machine because the top end of the box body 1 is not provided with the connection points, namely the fragile part of the structural rigidity of the box body 1 is not stressed any more.

The design scheme that above-mentioned three kinds of embodiments provided has all effectively reduced the tie point that hangs between barrel and the box 1, has reduced the output route of barrel vibrational force, has avoided the atress of the weak position of box 1 to the effectual vibrational noise problem of solving box 1.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims (10)

1. A dual drum washing machine, comprising:

a box body;

the two cylinders comprise an upper cylinder arranged in the box body and a lower cylinder arranged below the upper cylinder at intervals; and

and the upper end of the spring shock absorber is connected with the upper barrel or the lower barrel, and the lower end of the spring shock absorber is connected with the box body and used for reducing the vibration transmitted to the box body by the upper barrel or the lower barrel.

2. The dual drum washing machine as claimed in claim 1, wherein at least one of the drums is damped only by the spring damper provided at the lower end thereof.

3. The dual drum washing machine as claimed in claim 1, wherein the spring damper comprises:

the sleeve is a vibration reduction cavity with an opening at the top end, and the bottom end of the sleeve is connected with the box body through a connecting column;

the top end of the piston rod is connected with the upper cylinder or the lower cylinder, the bottom end of the piston rod is inserted into the vibration reduction cavity from the opening of the vibration reducer casing pipe, and the piston rod can slide up and down relative to the vibration reduction cavity;

the damping block is positioned in the vibration attenuation cavity and is fixedly connected with the piston rod; and

and the spring is positioned above the shock absorber sleeve and sleeved outside the piston rod.

4. The dual drum washing machine as claimed in claim 3, wherein the damping chamber has a damping substance therein.

5. The dual drum washing machine as claimed in claim 3, wherein the open end of the damper chamber is provided with a spring stopper plate having a stepped hole in the center thereof through which only the piston rod passes.

6. The dual drum washing machine as claimed in claim 5, wherein a rubber block is provided between the top end of the piston rod and the drum, and the spring is defined between the rubber block and the spring stopper plate.

7. The dual drum washing machine as claimed in claim 3, wherein the bottom end of the connecting column is threaded, the casing is provided with a screw hole corresponding to the connecting column, and the connecting column is screwed to the casing.

8. The dual drum washing machine as claimed in claim 7, wherein a rubber gasket is sleeved outside the connecting column, and the rubber gasket is located between the bottom surface of the sleeve and the threads.

9. The dual drum washing machine as claimed in claim 1, wherein the number of the spring dampers connected to the upper or lower drum is limited to 2-4.

10. The dual drum washing machine as claimed in claim 1, wherein the spring dampers are each disposed obliquely outwardly such that a distance between a bottom end thereof and a longitudinal centerline of the cabinet is greater than a distance between a top end thereof and the longitudinal centerline of the cabinet.

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