JP2020519377A - Damper for washing machine and washing machine - Google Patents

Abstract

A damper for a washing machine and a washing machine, wherein the damper includes a suspension rod (1), and one end of the suspension rod (1) is connected to a casing/outer tub of the washing machine. The damper is further provided with a hanging rod (21) connected to the outer tub/housing of the washing machine at one end, and a connecting member (the other end installed to slide on the suspension rod (1) ( 23) a first elastic structure (2) connected to the suspension rod (1) via a second elastic structure (2) provided inside the first elastic structure (2) and having one end connected to the suspension rod (1) An elastic structure (3). The suspension rod (1) is provided so as to be movable in the axial direction with respect to the suspension rod (21), and causes deformation of the first elastic structure (2) and the second elastic structure (3) during movement. .. According to the damper, the damping effect is significantly enhanced. Moreover, since the occupied space is reduced, the damper is less likely to collide with the internal structure of the washing machine, and noise during the washing process is reduced. [Selection diagram] Figure 1

Description

The present invention relates to a washing machine, and more particularly, to a damper for a washing machine and a washing machine equipped with the damper.

The vibration control unit of the conventional pulsator washing machine mainly includes a suspension rod and a damper. One end of the suspension rod is connected to the casing of the washing machine, and the damper is suspended on the suspension base of the outer tub of the washing machine. Since the damper has a slightly large volume ratio, it occupies a large space outside the bottom of the outer tub of the washing machine. In addition, in order to properly mount the damper, the outer tub bottom of the washing machine has a large volume. Further, during the dehydration start-up operation of the washing machine, the outer tub of the washing machine may wobble or swing with the start-up of the motor, and the amplitude may increase. At this time, the damper interferes with the bottom of the outer tub, causing abnormal vibrations and noise, which hinders the experience of use.

In view of the above, the present invention is proposed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a damper for a washing machine that eliminates the defects of the prior art, enhances the vibration control effect, reduces the occupation of the internal space of the washing machine, and reduces the operating noise of the washing machine. To do.

Another object of the present invention is to provide a washing machine equipped with the above damper.

In order to achieve the first object, the present invention uses the following technical solution.

A damper for a washing machine, comprising a suspension rod, one end of which is connected to a casing/outer tub of the washing machine. The damper further has a hanging rod connected to the outer tub/housing of the washing machine at one end, and the other end connected to the suspension rod through a connecting member installed so as to slide on the suspension rod. And a second elastic structure provided inside the first elastic structure and having one end connected to the suspension rod. The suspension rod is provided so as to be movable in the axial direction with respect to the suspension rod, and causes deformation of the first elastic structure and the second elastic structure when moving.

Further, the first elastic structure includes a suspension spring, and the suspension spring includes a suspension spring body, a hanging rod provided at one end of the suspension spring body, and a connecting member provided at the other end. The connecting member is a suspension spring fixing base, and is detachably connected to the suspension spring main body. The second elastic structure is provided in the suspension spring body and is located between the suspension spring fixing base and the other end of the suspension rod. Preferably, the suspension spring fixing base and the suspension spring main body are screw-connected.

The suspension spring body and the hanging rod are integrally molded. Alternatively, the suspension spring body and the hanging rod are fixedly connected. Alternatively, the suspension spring body and the hanging rod are detachably connected.

Further, the second elastic structure includes a vibration damping spring, a first spring seat, and a second spring seat. The first spring seat and the second spring seat are respectively provided at both ends of the damping spring and contact the damping spring, and the second elastic structure contacts the suspension spring fixing base via the second spring seat. , Is connected to the other end of the suspension rod via the first spring seat. The suspension rod is sequentially inserted into a suspension spring fixing base, a second spring seat, a damping spring and a first spring seat, and the first spring seat is separated from the other end of the suspension rod by the action of the damping spring. A positioning structure is provided to prevent this. The other end of the rod is connected. The first spring seat is biased by the elastic force of the vibration control spring so as to be separated from the suspension rod. However, by providing the positioning structure, the separation of the first spring seat from the suspension rod can be avoided. Is.

Further, a through hole is provided at the center of the suspension spring fixing base, and the suspension rod is inserted into the through hole to extend into the suspension spring main body and is connected to the second elastic structure. The through hole includes a first through hole portion and a second through hole portion that slidably engage with the suspension rod. A second spring seat and a part of the damping spring are provided in the second through hole portion, and the second spring seat abuts inside the second through hole portion by the damping spring. The hole diameter of the first through hole portion is smaller than that of the second through hole portion, and a position regulating structure for preventing the second spring seat from coming off due to the action of the vibration control spring is provided at the intersection thereof.

Further, a damping groove for holding damping grease is provided inside the first through hole portion of the suspension spring fixing base, and a suspension spring reinforcing rib is provided outside the suspension spring fixing base provided with the damping groove. It is provided. Preferably, the damping groove extends in the axial direction of the through hole, and the suspension spring reinforcing rib is provided corresponding to the damping groove. More preferably, the damping groove is uniformly provided in the circumferential direction of the first through hole portion, and the suspension spring reinforcing rib is provided corresponding to the damping groove.

Further, a through hole for inserting a suspension rod is provided at the center of each of the first spring seat and the second spring seat, and at least a part of the through hole of the second spring seat slides on the suspension rod. Engage to move. A groove for holding damping grease is provided inside the through hole that slidably engages with the suspension rod in the second spring seat, and outside the portion of the second spring seat where the groove is installed. Reinforcing ribs are provided on the. Preferably, the groove extends in the axial direction of the through hole of the second spring seat, and the reinforcing rib is provided corresponding to the groove. More preferably, the groove is uniformly provided in the circumferential direction of the through hole, and the reinforcing rib is provided corresponding to the groove.

Further, the second elastic structure further includes a damping unit, the damping unit being provided between the second spring seat and the suspension spring fixing base, and having one end sliding with the second through hole portion of the suspension spring fixing base. And the other end extends into the through hole of the second spring seat. Of the outside of the damping unit, one end extending into the through hole of the second spring seat has a truncated cone structure, and the end size of the end is the smallest. A through hole is provided at the center of the damping unit, and the suspension rod is inserted into the through hole and slidably engages with the through hole.

Further, at least three damping ribs are provided in the through hole of the damping unit, and preferably, the damping ribs are uniformly provided in the circumferential direction of the through hole of the damping unit. At least one notch is provided at both ends of the through hole of the damping unit, and preferably, the notches at both ends of the through hole are offset.

In order to achieve the second object, the present invention uses the following technical solution.

A washing machine in which the damper is arranged, the washing machine further including at least a washing machine casing and an outer tub of the washing machine. The washing machine casing is provided with a mounting structure that engages with the suspension rod and is connected to the suspension rod, and the washing machine outer tub has a mounting structure that engages with the hanging rod on the circumferential side of the bottom. It is provided and connected to a hanging rod. Alternatively, the washing machine casing is provided with a mounting structure that engages with the hanging rod and is connected to the hanging rod, and the washing machine outer tub engages with the hanging rod on the circumferential side of the bottom portion. A mounting structure is provided and connected to the suspension rod.

Further, one end of the suspension rod, which is separated from the first elastic structure, has a hook-shaped structure or a positioning structure for preventing the suspension rod from being separated from the casing/outer tub of the washing machine. The body/outer tub is provided with a hook hole that engages with the hook-like structure or a mounting hole that engages with the positioning structure. One end of the hanging rod, which is separated from the first elastic structure, has a hook-like structure or a positioning structure for preventing the hanging rod from being separated from the outer tub/housing of the washing machine. The tank/housing is provided with a hook hole that engages with the hook-like structure or a mounting hole that engages with the positioning structure.

The following beneficial effects can be obtained by using the above technical solution in the present invention.

1. The damper of the present invention has a simple structural design, and the damping effect is clearly enhanced by combining the first elastic structure and the second elastic structure.

2. The damper of the present invention has a simple structural design. The suspension spring and the second elastic structure are combined, and the suspension spring and the second elastic structure are provided in the central portion of the damper, so that both ends of the damper are only small suspension rods and suspension rods. As a result, the damper occupies only a small position in the outer tub of the washing machine. In addition, since the central portion of the washing machine has a large space, it is possible to design the damper structure to be larger, and to install a vibration damping spring or a suspension spring having a longer length. As a result, a better damping effect can be achieved.

3. In the present invention, the damping unit is provided between the suspension spring fixing base and the second spring seat, and the groove for holding the damping grease is provided in these through holes. Further, a damping rib is further provided in the through hole of the damping unit. This strengthens the damping force of the entire damper, making it suitable for large-capacity pulsator washing machines. In addition, since one end of the damping unit on the side extending into the second spring seat is a truncated cone, the damping force applied from the damping unit is variable. The greater the force with which the second spring seat presses the damping unit, the greater the damping force generated by the damping unit.

4. ADVANTAGE OF THE INVENTION According to this invention, since the installation space of the outer tub of a washing machine is saved, the outer tub volume of a washing machine can be reduced effectively. Therefore, the outer tub design of the washing machine is simplified, and the operation of the washing machine becomes more reliable.

FIG. 1 is a vertical sectional view of a damper of the present invention. FIG. 2 is an exploded view of the damper of the present invention. FIG. 3 is an enlarged view of the Y portion of FIG. FIG. 4 is a diagram showing a suspension spring fixing base in the present invention. FIG. 5: is a figure which shows the 2nd spring seat of this invention. FIG. 6 is a diagram showing the damping unit of the present invention.

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments will be described clearly and briefly below in combination with the drawings according to the embodiments of the present invention. The following examples are for explaining the present invention and do not limit the scope of the present invention.

In the description of the present invention, the directions or positional relationships indicated by the terms “upper”, “lower”, “inside”, “outer”, etc. are the directions or positional relationships based on the drawings, and for convenience of description of the present invention, It is merely for the sake of brevity and does not imply or imply that the subject device or member has a particular orientation and must be constructed and operated in the particular orientation. Therefore, it should not be understood as limiting the invention.

In the description of the present invention, the terms “attach” and “connect” should be construed in a broad sense unless otherwise clearly defined and limited. For example, it may be a fixed connection, a removable connection, or an integral connection. Further, it may be mechanical connection or electrical connection. Further, it may be a direct connection or an indirect connection via an intermediate medium. Those skilled in the art can interpret the specific meanings of the above terms in the present invention depending on the specific situation.

Specific embodiments of the present invention will be further described below with reference to the drawings.

As shown in FIGS. 1 to 6, the damper of the washing machine includes a suspension rod 1. One end of the suspension rod 1 is connected to the casing/outer tub of the washing machine. Further, the damper further includes a first elastic structure 2 and a second elastic structure 3. The first elastic structure 2 has a hanging rod 21 connected to the outer tub/housing of the washing machine at one end, and the other end through a connecting member installed so as to slide on the suspension rod 1. It is connected to the suspension rod 1. The second elastic structure 3 is provided inside the first elastic structure 2 and has one end connected to the suspension rod 1. The suspension rod 1 is provided so as to be movable in the axial direction with respect to the hanging rod 21, and causes the first elastic structure 2 and the second elastic structure 3 to be deformed when moving.

In the above scheme, the damper of the washing machine of the present invention is generally used in a pulsator washing machine. One end of the suspension rod 1 is connected to a casing/outer tub of a washing machine via a suspension rod base 4. The hanging rod 21 is connected to the outer tub/housing of the washing machine through the hanging rod base 5. The first elastic structure 2 and the second elastic structure 3 both have elasticity and are deformed by the action of an external force, while they are restored to their original state when the external force is removed. The elastic portions of the first elastic structure 2 that are deformed may be springs, or one may be a spring and the other may be another type of elastic portion. The suspension rod 1 is provided so as to be movable in the axial direction with respect to the hanging rod 21, and gives a damping force by deforming the first elastic structure 2 and the second elastic structure 3 during movement. One end of the hanging rod 21 is provided at one end of the first elastic structure 2, and the other end is connected to a casing of a washing machine or an outer tub. Also, one end of the suspension rod 1 is connected to an outer tub or a casing of the washing machine. Further, the suspension rod 1 is connected to the other end of the first elastic structure 2 and also to the second elastic structure 3 via a connecting member installed so as to slide on the suspension rod 1.

Further, the first elastic structure 2 includes a suspension spring 2. The suspension spring 2 includes a suspension spring main body 22, a hanging rod 21 provided at one end of the suspension spring main body 22, and a connecting member provided at the other end.

The connecting member is a suspension spring fixing base 23, and is detachably connected to the suspension spring main body 22. The second elastic structure 3 is provided in the suspension spring body 22 and is located between the suspension spring fixing base 23 and the other end of the suspension rod 1. Preferably, the suspension spring fixing base 23 and the suspension spring main body 22 are screw-connected.

The suspension spring body 22 and the hanging rod 21 are integrally molded. Alternatively, the suspension spring body 22 and the hanging rod 21 are fixedly connected. Alternatively, the suspension spring body 22 and the hanging rod 21 are detachably connected.

In the above scheme, the suspension spring fixing base 23 and the suspension spring main body 22 are detachably connected. The connection method may be engagement, screw connection, or the like. In the present scheme, as a preferred embodiment, the suspension spring fixing base 23 and the suspension spring main body 22 are screw-connected. The suspension spring fixing base 23 connects and secures the suspension spring 2, and the second elastic structure 3 is provided in the suspension spring main body 22 so as to be located between the suspension spring fixing base 23 and the other end of the suspension rod 1. It has the effect of

Further, the second elastic structure 3 includes a vibration damping spring 31, a first spring seat 32, and a second spring seat 33.

The first spring seat 32 and the second spring seat 33 are provided at both ends of the vibration damping spring 31 and are in contact with the vibration damping spring 31. The second elastic structure 3 contacts the suspension spring fixing base 23 via the second spring seat 33, and is connected to the other end of the suspension rod 1 via the first spring seat 32.

The suspension rod 1 is sequentially inserted into the suspension spring fixing base 23, the second spring seat 33, the damping spring 31, and the first spring seat 32. Moreover, a positioning structure is provided at the other end of the suspension rod 1 to prevent the first spring seat 32 from being separated by the action of the vibration control spring 31. The other end of the rod is connected. The first spring seat 32 is subjected to an urging force such that it is disengaged from the suspension rod 1 due to the action of the elastic force of the vibration control spring 31, but by providing a positioning structure, the first spring seat 32 from the suspension rod 1 is provided. Can be avoided.

In the above scheme, the vibration-damping spring 31 is sandwiched between the first spring seat 32 and the second spring seat 33 and is in contact with each of them. Therefore, when the suspension rod 1 displaces the first spring seat 32, the vibration damping spring 31 is deformed and a damping force is generated. The other end of the suspension rod 1 is one end of the suspension rod 1 that is not connected to the casing/outer tub of the washing machine. The positioning structure at the other end of the suspension rod 1 may be a structure detachably connected to the suspension rod 1 or a structure integrally formed with the suspension rod 1. When the end of the suspension rod 1 can be sequentially inserted into the suspension spring fixing base 23, the second spring seat 33, the damping spring 31, and the first spring seat 32, the positioning structure of the suspension rod 1 is integrated with the suspension rod 1. It is preferable to mold it. However, when the end of the suspension rod 1 cannot be sequentially inserted into the suspension spring fixing base 23, the second spring seat 33, the damping spring 31, and the first spring seat 32, the positioning structure of the suspension rod 1 is suspended. It must be detachably connected to the rod 1.

Further, a through hole is provided at the center of the suspension spring fixing base 23. The suspension rod 1 is inserted into the through hole, extends into the suspension spring body 22, and is connected to the second elastic structure 3.

The through hole includes a first through hole portion 233 and a second through hole portion 234 that slidably engage with the suspension rod 1.

A part of the second spring seat 33 and the damping spring 31 is provided in the second through hole portion 234. The second spring seat 33 is in contact with the inside of the second through hole portion 234 by the vibration control spring 31.

The hole diameter of the first through hole portion 233 is smaller than that of the second through hole portion 234, and a position regulating structure for preventing the second spring seat 33 from coming off due to the action of the vibration control spring 31 is provided at the intersection thereof. ..

In the above scheme, since the second spring seat 33 is in contact with the inside of the second through hole portion 234 by the damping spring 31, the second spring seat 33 in the radial direction of the second through hole portion 234 and The movement of the damping spring 31 is prevented. The position regulation structure regulates the position of the second spring seat 33 and the damping spring 31 within the suspension spring body. Since the hole diameter of the first through hole portion 233 is smaller than that of the second through hole portion 234, a position where the second spring seat 33 is prevented from separating from the intersection itself of the two through hole portions by the action of the damping spring 31. It can be a regulatory structure. Preferably, the position restricting structure is a position restricting surface generated by a difference in inner diameter of the through hole. Alternatively, a position restriction structure that prevents the second spring seat 33 from coming off due to the action of the damping spring 31 is separately provided at the intersection of the two through holes.

Further, a damping groove 231 for holding damping grease is provided inside the first through hole portion 233 of the suspension spring fixing base 23. A suspension spring reinforcing rib 232 is provided outside the suspension spring fixing base 23 provided with the damping groove 231. Preferably, the damping groove 231 extends in the axial direction of the through hole, and the suspension spring reinforcing rib 232 is provided corresponding to the damping groove 231. More preferably, the damping groove 231 is uniformly provided in the circumferential direction of the first through hole portion 233, and the suspension spring reinforcing rib 232 is provided corresponding to the damping groove 231.

In the above scheme, the damping grease is a high resistance lubricating grease that is widely applied. Also, in order to make the moving member move more stably, smoothly and accurately, it is designed mainly for blocking, cushioning, waterproofing and sealing in the slow switch mechanism, which has a relatively high resistance requirement. Holding damping grease in the damping groove 231 improves damping performance and reduces wear. Further, the suspension spring reinforcing ribs 232 strengthen the strength of the suspension spring fixing base 23. When the damping groove 231 extends in the axial direction of the through hole, the damping force for relative sliding between the suspension rod 1 and the suspension spring fixing base 23 becomes small. Therefore, even if the damping force is applied, the damping force does not become too large and the relative sliding with the suspension rod 1 is not hindered. Further, the reason why the damping groove 231 is uniformly provided in the circumferential direction of the first through hole portion 233 is to prevent the unnecessary inclination and the like by uniformly distributing the damping force to be applied. In addition, more preferably, the suspension spring fixing base 23 inclines in the process of use, and the second spring seat 33 provided inside the suspension spring fixing base 23 and a part of the damping spring are different due to friction, interference or collision. The suspension spring fixing base 23 has a fixed length so that no sound is generated.

Further, a through hole for inserting the suspension rod 1 is provided at the center of each of the first spring seat 32 and the second spring seat 33. At least a part of the through hole of the second spring seat 33 is slidably engaged with the suspension rod 1.

A groove 331 for holding damping grease is provided inside the through hole of the second spring seat 33 that slidably engages with the suspension rod 1. Further, a reinforcing rib 332 is provided outside the portion of the second spring seat 33 where the groove 331 is installed. Preferably, the groove 331 extends in the axial direction of the through hole of the second spring seat 33, and the reinforcing rib 332 is provided corresponding to the groove 331. More preferably, the grooves 331 are uniformly provided in the circumferential direction of the through hole, and the reinforcing ribs 332 are provided corresponding to the grooves 331.

In the above scheme, providing the groove 331 for holding the damping grease inside the through hole of the second spring seat 33 increases the damping force of the second spring seat 33 while increasing the damping force. This is to prevent the sliding relative to the suspension rod 1 from being hindered and to reduce wear. Further, the reinforcing rib 332 is provided on the outer side in order to strengthen the strength of the second spring seat 33. In addition, the reason for stretching in the axial direction is to obtain an appropriate damping force. Further, the reason why the damping force is evenly provided in the circumferential direction is to evenly distribute the generated damping force to avoid an unexpected situation such as a tilt due to unevenness of the damping force.

Further, the second elastic structure 3 includes a damping unit 34. The damping unit 34 is provided between the second spring seat 33 and the suspension spring fixing base 23, has one end slidably engaged with the second through hole portion 234 of the suspension spring fixing base 23, and the other end. The second spring seat 33 extends into the through hole. Of the outer side of the damping unit 34, one end extending into the through hole of the second spring seat 33 has a truncated cone structure, and the end size of the end is the smallest. A through hole is provided at the center of the damping unit 34, and the suspension rod 1 is inserted into the through hole and slidably engages with the through hole.

In the above scheme, the damping unit 34 applies an appropriate damping force, and more securely ensures the sliding connection between the second spring seat 33 and the suspension spring fixing base 23 and the suspension rod 1. As a result, the risk of inclination of each member is reduced, and the reliability as a whole is improved. Since the damping unit 34 slidably engages with the second through hole portion 234 of the suspension spring fixing base 23, the suspension spring fixing base 23 is prevented from extending in the radial direction. Further, since one end of the outside of the damping unit 34 that extends into the through hole of the second spring seat 33 has a truncated cone structure, the damping force formed by the damping unit is variable. In the dehydration operation process of the washing machine, the second spring seat 33 presses the damping unit 34 when receiving a force, so that the through hole of the damping unit 34 is reduced and the resistance force formed against the suspension rod 1 is increased. .. The greater the pressing force applied to the second spring seat 33, the greater the damping force of the damping unit.

Further, at least three damping ribs 341 are provided in the through hole of the damping unit 34. Preferably, the damping rib 341 is evenly provided in the circumferential direction of the through hole of the damping unit 34. Further, at least one notch 342 is provided at both ends of the through hole of the damping unit 34. Preferably, the notches 342 at both ends of the through hole are offset from each other.

In the above scheme, the plurality of damping ribs 341 are provided in order to enhance the reliability of the damping unit 34 by strengthening the friction damping force of the damping unit 34. Further, it is provided uniformly in the circumferential direction that the damping force is uniform, and the position of the second spring seat 33, the vibration control spring 31, or the suspension spring fixed bases 23 and the like due to unintentional deformation or inclination of the damping unit 34. This is because it does not hinder the operation. The cutouts 342 are provided at both ends of the through hole of the damping unit 34 in order to extend the service life by strengthening the elasticity of the damping unit 34. Further, by providing the notches 342 at both ends of the through hole so as to be displaced, the elasticity is strengthened and the strength of the damping unit 34 is also strengthened.

Furthermore, the present invention provides a washing machine including the damper described above. The washing machine further includes at least a washing machine casing and a washing machine outer tub, and has the following features. That is, the washing machine casing is provided with a mounting structure that engages with the suspension rod 1, and is connected to the suspension rod 1. Further, the washing machine outer tub is provided with a mounting structure that engages with the hanging rod 21 on the circumferential side of the bottom portion, and is connected to the hanging rod 21.

Alternatively, the washing machine housing is provided with a mounting structure that engages with the hanging rod 21 and is connected to the hanging rod 21. Further, the outer tub of the washing machine is provided with a mounting structure which engages with the suspension rod 1 on the circumferential side of the bottom, and is connected to the suspension rod 1.

In the above scheme, one end of the suspension rod 1 and the hanging rod 21 which is separated from the first elastic structure 2 may have a hook-shaped structure, an engaging structure or a screw connection structure. Generally, a hook-shaped structure is preferable.

Further, one end of the suspension rod 1 which is separated from the first elastic structure 2 has a hook-like structure or a positioning structure which prevents the suspension rod 1 from being separated from the casing/outer tub of the washing machine. Further, the housing/outer tub of the washing machine is provided with a hook hole that engages with the hook-shaped structure or a mounting hole that engages with the positioning structure.

One end of the hanging rod 21 that is separated from the first elastic structure 2 has a hook-like structure or a positioning structure that prevents the hanging rod 21 from separating from the outer tub/housing of the washing machine. The outer tub/housing of the washing machine is provided with a hook hole that engages with the hook-shaped structure or a mounting hole that engages with the positioning structure.

As shown in FIGS. 1 to 6, in the present embodiment, the damper of the washing machine is installed in the pulsator washing machine.

The damper of the washing machine comprises a suspension rod 1. One end of the suspension rod 1 is connected to the casing/outer tub of the washing machine. Further, the damper further includes a first elastic structure 2 and a second elastic structure 3. The first elastic structure 2 has a hanging rod 21 connected to the outer tub/housing of the washing machine at one end, and the other end through a connecting member installed so as to slide on the suspension rod 1. It is connected to the suspension rod 1. The second elastic structure 3 is provided inside the first elastic structure 2 and has one end connected to the suspension rod 1. The suspension rod 1 is provided so as to be movable in the axial direction with respect to the hanging rod 21, and causes the first elastic structure 2 and the second elastic structure 3 to be deformed when moving.

As shown in FIGS. 1 to 6, specifically, the first elastic structure 2 includes a suspension spring 2. The suspension spring 2 includes a suspension spring main body 22, a hanging rod 21 provided at one end of the suspension spring main body 22, and a connecting member provided at the other end. The connection member is a suspension spring fixing base 23, and the suspension spring fixing base 23 and the suspension spring main body 22 are screw-connected. The second elastic structure 3 is provided in the suspension spring body 22 and is located between the suspension spring fixing base 23 and the other end of the suspension rod 1.

The suspension spring body 22 and the hanging rod 21 are integrally molded.

The second elastic structure 3 includes a vibration damping spring 31, a first spring seat 32, and a second spring seat 33. The first spring seat 32 and the second spring seat 33 are provided at both ends of the vibration damping spring 31 and are in contact with the vibration damping spring 31. The second elastic structure 3 contacts the suspension spring fixing base 23 via the second spring seat 33, and is connected to the other end of the suspension rod 1 via the first spring seat 32. The suspension rod 1 is sequentially inserted into the suspension spring fixing base 23, the second spring seat 33, the damping spring 31, and the first spring seat 32. Moreover, a positioning structure is provided at the other end of the suspension rod 1 to prevent the first spring seat 32 from being separated by the action of the vibration control spring 31. The other end of the rod is connected.

A through hole is provided at the center of the suspension spring fixing base 23. The suspension rod 1 is inserted into the through hole, extends into the suspension spring body 22, and is connected to the second elastic structure 3. The through hole includes a first through hole portion 233 and a second through hole portion 234 that slidably engage with the suspension rod 1. A part of the second spring seat 33 and the damping spring 31 is provided in the second through hole portion 234. The second spring seat 33 is in contact with the inside of the second through hole portion 234 by the vibration control spring 31. The hole diameter of the first through hole portion 233 is smaller than that of the second through hole portion 234, and a position regulating structure for preventing the second spring seat 33 from coming off due to the action of the vibration control spring 31 is provided at the intersection thereof. ..

A through hole is provided at the center of the suspension spring fixing base 23. The suspension rod 1 is inserted into the through hole, extends into the suspension spring body 22, and is connected to the second elastic structure 3. The through hole includes a first through hole portion 233 and a second through hole portion 234 that slidably engage with the suspension rod 1. A part of the second spring seat 33 and the damping spring 31 is provided in the second through hole portion 234. The second spring seat 33 is in contact with the inside of the second through hole portion 234 by the vibration control spring 31. The hole diameter of the first through hole portion 233 is smaller than that of the second through hole portion 234, and a position regulating structure for preventing the second spring seat 33 from coming off due to the action of the vibration control spring 31 is provided at the intersection thereof. ..

A damping groove 231 for holding damping grease is provided inside the first through hole portion 233 of the suspension spring fixing base 23. A suspension spring reinforcing rib 232 is provided outside the suspension spring fixing base 23 provided with the damping groove 231. The attenuation groove 231 extends in the axial direction of the through hole and is evenly provided in the circumferential direction of the first through hole portion 233. The suspension spring reinforcing rib 232 is provided corresponding to the damping groove 231.

A through hole for inserting the suspension rod 1 is provided at the center of each of the first spring seat 32 and the second spring seat 33. At least a part of the through hole of the second spring seat 33 is slidably engaged with the suspension rod 1.

A groove 331 for holding damping grease is provided inside a through hole of the second spring seat 33 that slidably engages with the suspension rod 1. Further, a reinforcing rib 332 is provided outside the portion of the second spring seat 33 where the groove 331 is installed. The groove 331 extends in the axial direction of the through hole of the second spring seat 33 and is evenly provided in the circumferential direction of the through hole. Further, the reinforcing rib 332 is provided corresponding to the groove 331.

The second elastic structure 3 further includes a damping unit 34. The damping unit 34 is provided between the second spring seat 33 and the suspension spring fixing base 23, has one end slidably engaged with the second through hole portion 234 of the suspension spring fixing base 23, and the other end thereof 2 Extend into the through hole of the spring seat. Of the outside of the damping unit, one end extending into the through hole of the second spring seat has a truncated cone structure, and the end size of the end is the smallest. A through hole is provided at the center of the damping unit 34, and the suspension rod 1 is inserted into the through hole and slidably engages with the through hole.

At least three damping ribs 341 are provided in the through hole of the damping unit 34. The damping ribs 341 are evenly provided in the circumferential direction of the through hole of the damping unit 34. Further, at least one notch 342 is provided at both ends of the through hole of the damping unit 34. The notches 342 at both ends of the through hole are offset from each other.

The pulsator washing machine of this embodiment includes at least a washing machine casing and a washing machine outer tub. The washing machine housing is provided with a mounting structure that engages with the suspension rod 1, and is connected to the suspension rod 1. Further, the washing machine outer tub is provided with a mounting structure that engages with the hanging rod 21 on the circumferential side of the bottom portion, and is connected to the hanging rod 21.

One end of the suspension rod 1 and the suspension rod 21 which is separated from the first elastic structure 2 has a hook-shaped structure. Further, hook holes that engage with the hook-shaped structure are provided in the washing machine casing and the washing machine outer tub.

As shown in FIGS. 1 to 6, in the present embodiment, the damper of the washing machine is installed in the pulsator washing machine.

The damper of the washing machine comprises a suspension rod 1. One end of the suspension rod 1 is connected to the casing/outer tub of the washing machine. Further, the damper further includes a first elastic structure 2 and a second elastic structure 3. The first elastic structure 2 has a hanging rod 21 connected to the outer tub/housing of the washing machine at one end, and the other end through a connecting member installed so as to slide on the suspension rod 1. It is connected to the suspension rod 1. The second elastic structure 3 is provided inside the first elastic structure 2 and has one end connected to the suspension rod 1. The suspension rod 1 is provided so as to be movable in the axial direction with respect to the hanging rod 21, and causes the first elastic structure 2 and the second elastic structure 3 to be deformed when moving.

The difference from the first embodiment is that the hanging rod 21 is connected to the casing of the washing machine, and the other end of the suspension rod 1 is connected to the outer tub of the washing machine.

The washing machine housing is provided with a mounting structure that engages with the hanging rod 21, and is connected to the hanging rod 21. Further, the outer tub of the washing machine is provided with a mounting structure which engages with the suspension rod 1 on the circumferential side of the bottom, and is connected to the suspension rod 1.

The above are only preferred embodiments of the present invention, and do not limit the present invention to any form. Although the present invention has been disclosed above by the preferred embodiments, it is not intended to limit the invention. A slight modification or supplementation made by a person skilled in the art using the technical contents presented above is considered to be an equivalently modified equivalent example without departing from the technical solution of the present invention. It does not deviate from the contents of the plan. Further, all simple modifications, equivalent variations and supplements made to the above-described embodiments based on the technical essence of the present invention are within the scope of the present invention. Although the above is the embodiment of the present invention, a person skilled in the art can make various modifications and improvements without departing from the principle of the present invention. Considered a range.

1 Suspension Rod 2 First Elastic Structure/Suspension Spring 21 Suspension Rod 22 Suspension Spring Main Body 23 Suspension Spring Fixed Base 231 Damping Groove 232 Suspension Spring Reinforcing Rib 233 First Through Hole 234 Second Through Hole 3 Third Elastic Structure 31 Damping spring 32 First spring seat 33 Second spring seat 331 Groove 332 Reinforcing rib 34 Damping unit 341 Damping rib 342 Notch 4 Suspension rod base 5 Hanging rod base

Claims (10)

A damper for a washing machine, comprising a suspension rod, wherein one end of the suspension rod is connected to a casing/outer tub of the washing machine, the damper further comprising:
A hanging rod connected to the outer tub/housing of the washing machine is provided at one end, and the other end is connected to the suspension rod via a connecting member installed to slide on the suspension rod. Elastic structure and
A second elastic structure provided inside the first elastic structure and having one end connected to the suspension rod;
The suspension rod is provided so as to be movable in the axial direction with respect to the hanging rod, and causes deformation of the first elastic structure and the second elastic structure when the suspension rod is moved. The first elastic structure includes a suspension spring, the suspension spring includes a suspension spring main body, a hanging rod provided at one end of the suspension spring main body, and a connection member provided at the other end,
The connecting member is a suspension spring fixed base, is detachably connected to the suspension spring main body, and the second elastic structure is provided in the suspension spring main body between the suspension spring fixed base and the other end of the suspension rod. The damper for the washing machine according to claim 1, wherein the damper is located, and preferably, the suspension spring fixing base and the suspension spring main body are screw-connected. The second elastic structure includes a damping spring, a first spring seat, and a second spring seat,
The first spring seat and the second spring seat are respectively provided at both ends of the vibration control spring and contact the vibration control spring, and the second elastic structure fixes the suspension spring via the second spring seat. Abuts the base and is connected to the other end of the suspension rod through the first spring seat,
The suspension rod is sequentially inserted into the suspension spring fixing base, the second spring seat, the vibration control spring, and the first spring seat, and the other end of the suspension rod is provided with the first spring seat. The damper for a washing machine according to claim 1 or 2, further comprising a positioning structure for preventing the seismic spring from separating from the seismic spring. A through hole is provided in the center of the suspension spring fixing base, the suspension rod is inserted into the through hole and extends into the suspension spring main body, and is connected to the second elastic structure.
The through hole includes a first through hole portion and a second through hole portion that slidably engage with the suspension rod;
A second spring seat and a part of a damping spring are provided in the second through hole portion, and the second spring seat abuts in the second through hole portion by the damping spring.
A hole diameter of the first through-hole portion is smaller than that of the second through-hole portion, and a position regulating structure for preventing the second spring seat from being separated due to the action of the vibration damping spring is provided at an intersection thereof. The damper for a washing machine according to claim 2 or 3, wherein A damping groove for holding damping grease is provided inside the first through hole of the suspension spring fixing base, and a suspension spring reinforcing rib is provided outside the suspension spring fixing base provided with the damping groove. Is provided,
Preferably, the damping groove extends in the axial direction of the through hole, the suspension spring reinforcing rib is provided corresponding to the damping groove,
More preferably, the damping groove is evenly provided in the circumferential direction of the first through hole portion, and the suspension spring reinforcing rib is provided corresponding to the damping groove. Damper. A through hole for inserting the suspension rod is provided at the center of each of the first spring seat and the second spring seat, and at least a part of the through hole of the second spring seat is the same as the suspension rod. Engage to slide,
A groove for holding damping grease is provided inside the through hole that slidably engages with the suspension rod of the second spring seat, and a portion of the second spring seat where the groove is installed is provided. Reinforcing ribs are provided on the outside,
Preferably, the groove extends in the axial direction of the through hole of the second spring seat, the reinforcing rib is provided corresponding to the groove,
More preferably, the groove is uniformly provided in the circumferential direction of the through hole, and the reinforcing rib is provided so as to correspond to the groove, and the damper for the washing machine according to claim 3. The second elastic structure further includes a damping unit, the damping unit being provided between the second spring seat and the suspension spring fixing base, and having one end sliding with the second through hole portion of the suspension spring fixing base. And the other end extends into the through hole of the second spring seat,
Of the outer side of the damping unit, one end extending into the through hole of the second spring seat has a truncated cone structure, and the end size of the one end is the smallest.
The through-hole is provided in the center of the damping unit, and the suspension rod is inserted into the through-hole and slidably engages with the through-hole. Damper for washing machine. At least three damping ribs are provided in the through hole of the damping unit, and preferably, the damping ribs are uniformly provided in the circumferential direction of the through hole of the damping unit,
The damper of the washing machine according to claim 7, wherein at least one notch is provided at both ends of the through hole of the damping unit, and preferably, the notches at both ends of the through hole are offset from each other. .. A damper, wherein the damper according to any one of claims 1 to 8 is arranged, and further comprising a washing machine casing and a washing machine outer tub,
The washing machine housing is provided with a mounting structure that engages with the suspension rod and is connected to the suspension rod, and the washing machine outer tub has a mounting structure that engages with the hanging rod on the circumferential side of the bottom. Is provided and connected to the hanging rod,
Alternatively, the washing machine casing is provided with a mounting structure for engaging with the hanging rod and connected to the hanging rod, and the washing machine outer tub engages with the hanging rod on a circumferential side of a bottom portion. A washing machine having a mounting structure for connecting to the suspension rod. One end of the suspension rod, which is separated from the first elastic structure, has a hook-like structure, or has a positioning structure that prevents the suspension rod from being separated from the casing/outer tub of the washing machine. The body/outer tank is provided with a hook hole that engages with the hook-like structure or a mounting hole that engages with the positioning structure,
One end of the hanging rod, which is separated from the first elastic structure, has a hook-like structure, or has a positioning structure for preventing the hanging rod from being separated from the outer tub/housing of the washing machine. The washing machine according to claim 9, wherein the outer tub/housing is provided with a hook hole that engages with the hook-shaped structure or a mounting hole that engages with the positioning structure.