KR100469326B1 - Damping device and washing machine with the same - Google Patents

Abstract

The present invention relates to a shock absorber for damping vibrations and shocks, and a washing machine having such a shock absorber, and in particular, to easily mount or detach the shock absorber.

In the shock absorber according to the present invention, in the shock absorber comprising a socket portion provided at each end of the cylinder member and the rod member that is removably coupled to each other, and a ball stud connected to the socket portion refractorily and fixed to the device. A support member coupled to enter the inlet-side inner surface of the socket part from both sides of the socket part outer surface for supporting the ball stud, and an inner surface and an outer surface penetrating both sides of the socket part for coupling the support member; It includes the groove.

Description

DAMPING DEVICE AND WASHING MACHINE WITH THE SAME}

The present invention relates to a shock absorber for damping vibrations and shocks, and a washing machine having such a shock absorber, and more particularly, to a shock absorber for easily mounting or detaching a shock absorber and a washing machine having the same.

In general, household appliances such as industrial machinery and washing machines using a motor as a power source are provided with a shock absorber for reducing vibration of the apparatus because vibration occurs when the apparatus operates.

Such a shock absorber is usually composed of a plunger-type rod member removably inserted into a cylindrical cylinder member, and one end of the rod member and one end of the cylinder member are respectively coupled to the vibration generating portion and the fixed case or base portion. do. This is to reduce the vibration transmitted from the vibration source to the case or base portion.

In addition, such a shock absorber is rotatably coupled so that both ends coupled to the device to form a spherical joint (球 關節) is capable of effectively attenuating oscillation and vibration.

As shown in Fig. 1, socket portions 1 are provided at both ends of the shock absorber, and the socket portions 1 are coupled to the ball studs 2 fixed to the apparatus so that the connecting portions can rotate. At this time, the socket portion 1 has an insertion portion 1a corresponding to the outer shape of the head portion 2a so that the spherical head portion 2a of the ball stud 2 enters, and the inlet inner surface of the insertion portion 1a is provided. It is provided with a support ring (3) for preventing the head portion (2a) of the ball stud (2) is separated from the insertion portion (1a) in the state of entering the insertion portion (1a). The support ring 3 is formed of an elastic material which is cut at one side and can change an outer diameter, and a support groove 4 is formed on the inner surface of the inlet of the insertion part 1a to support the support ring 3.

When the socket part 1 of the shock absorber is coupled to the ball stud 2, the ball stud 2 is inserted into the support groove 3 of the socket part 1 in a state in which the support ring 3 is pre-coupled. When pressurized to enter (1a), the outer diameter of the support ring 3 is expanded while the ball stud 2 enters. Then, after being coupled, the support ring 3 is tightened so that the head portion 2a of the ball stud 2 is caught so that the ball stud 2 does not come out of the insertion portion 1a.

However, such a conventional shock absorber has a drawback that it is difficult to repair a device employing the shock absorber since it is very difficult to separate the ball stud 2 and the socket part 1 later. In other words, the conventional shock absorber is difficult to separate the shock absorber from the device because it is not possible to remove the support ring (3) to maintain their coupling in the state that the socket portion (1) and the ball stud (2) is coupled And, when separated by applying excessive force there was a problem that the socket portion (1) is sometimes broken.

The present invention is to solve such a problem, it is an object of the present invention to provide a shock absorber and a washing machine having the same to facilitate the coupling and separation of the socket portion and the ball stud of the shock absorber.

1 is a cross-sectional view showing a coupling configuration of the socket portion and the ball stud of the conventional shock absorber.

2 is a cross-sectional view showing the configuration of a washing machine with a shock absorber according to the present invention.

3 is a cross-sectional view showing the configuration of a shock absorber according to the present invention.

Figure 4 is an exploded perspective view showing the configuration of the socket portion and the ball stud of the shock absorber according to the present invention.

Figure 5 is a perspective view showing the outer surface of the socket portion of the shock absorber according to the present invention, showing a mounting structure of the support member.

FIG. 6 is a cross-sectional view taken along line AA ′ of FIG. 5, illustrating a state in which coupling between the socket part and the ball stud is completed.

FIG. 7 is a cross-sectional view taken along line AA ′ of FIG. 5, illustrating an operation in which the ball stud enters the socket part.

Explanation of symbols on the main parts of the drawings

10: main body case, 11: tank,

12: rotary tub, 14: washing plate,

15: drive motor, 16: power train,

20: shock absorber, 21: cylinder member,

22: rod member, 25: ball stud,

30: socket portion, 31: insertion portion,

32: support member, 32a: bending portion,

32b: support, 33: coupling groove,

34: receiving home.

Shock absorbing device according to the present invention for achieving this object, the socket portion provided respectively at the end of the cylinder member and the rod member coupled to each other retractable, and the ball stud connected to the socket portion refractory and fixed to the device In the shock absorber comprising: a support member coupled to enter the inlet side inner surface of the socket portion from both sides of the outer surface of the socket portion for the support of the ball stud, and the inner surface on both sides of the socket portion for coupling of the support member; It characterized in that it comprises a coupling groove formed so that the outer surface penetrates.

In addition, the support member is elastic and includes a bending portion bent to surround the outer surface of the socket portion, and a support portion bent from both ends of the bending portion to enter the socket portion through the coupling grooves on both sides of the socket portion It features.

In another aspect, the present invention is characterized in that the coupling groove is inclined toward the inlet direction of the socket portion so that the support member can enter from the outer surface of the socket portion toward the inlet of the socket portion.

In addition, the outer surface of the socket portion is recessed a predetermined depth to correspond to the shape of the bent portion of the support member, characterized in that the receiving groove is connected to the coupling grooves on both sides of the socket portion.

In addition, the coupling groove is characterized in that the outer surface side of the socket portion is opened toward the end of the rod member and the cylinder member so that the support member can be easily coupled.

In addition, a washing machine equipped with a shock absorber according to the present invention includes a main body case, a washing tank installed inside the main body case for the fresh water of the wash water, and a driving device for washing is installed outside the washing tank, and vibration damping of the washing tank. And a shock absorber provided between the washing tub and the main body case, the shock absorber being refractively connected to the socket part provided at each end of the cylinder member and the rod member which are coupled to each other. A ball stud fixed to the washing tub and the main body case, a support member coupled to enter the inlet-side inner surface of the socket part from both sides of an outer surface of the socket part for supporting the ball stud, and the coupling member for the support member It includes a coupling groove formed to penetrate the inner surface and the outer surface on both sides of the socket portion.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the washing machine to which the present invention is applied includes a water tank 11 installed inside the main body case 10 to enable fresh water of the washing water, and a water dehydration operation of the laundry. It is provided with a rotating tub 12 rotatably installed. At this time, the water tank 11 is installed in the state that the outer surface is caught in the main body case 10 through a plurality of suspension devices (13).

In addition, a washing plate 14 for washing through a swinging motion is installed in the rotating tank 12, and a lower portion of the water tank 11 is provided for the swinging of the washing plate 14 and the rotation of the rotating tank 12. The drive unit is installed. At this time, the driving device is a drive motor 15 coupled to the lower portion of the water tank 11, and a power transmission device for selectively transmitting the rotational force of the drive motor 15 to the washing plate 14 and the rotating tank 12 ( 16). In addition, a wobbling device 18 is installed on the washing shaft 17 extending from the power transmission device 16 to the inside of the rotating tub 12 to cause the rocking motion of the washing plate 14. The wobbling device 18 causes the inclined rotation shaft 19 to rotate together with the washing shaft 17 to cause a rocking motion of the washing plate 14 for washing.

In addition, the lower part of the water tank 11 to attenuate the vibration of the water tank 11 when washing is performed by the swinging motion of the washing plate 14 and to prevent the vibration of the water tank 11 from being transmitted toward the main body case 10. As a result, a plurality of shock absorbers 20 are installed, both ends of which are respectively coupled to the lower part of the water tank 11 and the inner surface of the base part 10a of the main body case 10.

As shown in Fig. 3, the shock absorber is inserted into the cylinder member 21, one end of which is refractorily coupled to the base portion 10a of the main body case 10, and to the cylinder member 21. It is composed of a rod member 22 of a predetermined length, one end of which is refractorily connected to the lower portion of the water tank (11).

In addition, the end of the cylinder member 21 and the rod member 22 is provided with a socket portion 30 having an insertion portion 31, one side of which is open for refractive connection, the base portion of the body case 10 ( A ball stud 25 having a spherical head portion 25a is installed at the lower portion of the water tank 11 and the socket member 30 of the cylinder member 21 and the rod member 22. At this time, the insertion portion 31 of the socket portion 30 and the head portion 25a of the ball stud 25 are provided in a corresponding size. This configuration can effectively reduce vibration and shock by connecting the cylinder member 21 and the rod member 22 to the lower portion of the water tank 11 and the base portion 10a of the main body case 10 in a rotatable state. It was made.

In addition, as shown in FIGS. 4 to 6, the shock absorber 20 supports the ball stud 25 that enters the inside of the socket part 30 to prevent the ball stud 25 from being separated. The support member 32 penetrates into the inlet-side inner surface of the socket part 30 from both sides of the outer surface of the part 30, and is provided. And both sides of the socket portion 30 is formed with a coupling groove 33 through which the inner and outer surfaces penetrate so that the support member 32 can be installed.

In addition, the support member 32 is made of steel having a predetermined width to have elasticity, and is bent to extend around the outer surface of the socket portion 30 and a bending portion 32a extending from both ends of the bending portion 32a. The support part 32b of predetermined length is provided. This is the head of the ball stud 25 entered into the inside of the socket portion 30 by entering the inside of the socket portion 30 through the coupling groove 33 formed on both sides of the socket portion 30, both support portions 32b The part 25a is to be caught and supported.

The coupling grooves 33 on both sides formed in the socket portion 30 enter from the outer surface of the socket portion 30 toward the inlet side of the socket portion 30 when the support portions 32b on both sides of the support member 32 are engaged. It is formed to be inclined in the inlet direction of the socket portion 30 to be. As shown in FIG. 7, when the head portion 25a of the ball stud 25 enters and is inserted into the insertion portion 31 of the socket portion 30, the support portions 32b of both sides of the ball stud 25 are mounted. By being pushed by the head portion 25a of the ball stud 25 and the socket portion 30 is to be easily made. After the coupling is completed, as shown in FIG. 6, the head portion 25a of the ball stud 25 is supported by the support portion 32b entered into the socket portion 30, so that the ball is not applied to the ball. The stud 25 is not to be separated from the socket portion 30. In addition, when the ball stud 25 is separated from the socket portion 30, the end portion of the support portion 32b entering the inner side of the socket portion 30 is deformed by a predetermined amount by the head portion 25a of the ball stud 25. At the same time, the ball stud 25 is easily detached by being pushed out of the socket part 30 again.

In addition, when the support member 32 is coupled to the outer surface of the socket portion 30, the support member 32 can be stably coupled, and at the same time, the outer surface of the support member 32 and the outer surface of the socket portion 30 are the same. A receiving groove 34 recessed to a predetermined depth is formed to correspond to the shape of the bending portion 32a of the supporting member 32 so as to form a plane, and the receiving groove 34 is connected to the coupling groove 33 on both sides. .

In addition, as shown in FIG. 5, the coupling groove 33 of the socket part 30 has an outer surface side of the socket part 30 so as to be easily coupled when the support member 32 is coupled to the socket part 30. In addition to being open to be associated with the receiving groove 34, it is provided with an opening portion 33a which is also opened to the end side (the end side of the socket portion) of the rod member 22. This is facilitated by engaging both support portions 32b of the support member 32 having elasticity when engaging the support member 32 to enter the coupling groove 30 from the end direction (the upper part in the drawing) of the socket portion 30. It is to be able to combine.

The following describes the operation of coupling or disconnecting the socket portion of the shock absorber to the bolster.

In order to couple the socket member 30 of the cylinder member 21 and the rod member 22 of the shock absorber 20 to the ball stud 25, the support member 32 is first mounted to the socket part 30. At this time, as shown in FIG. 5, the support member 32b on both sides of the support member 32 is opened on the upper side of the defect groove 33 from the direction of the end of the socket portion 30 (the upper part in the drawing). If the entry through (33a) can be easily mounted.

When the socket portion 30 and the ball stud 25 are coupled, as shown in FIG. 7, when the ball stud 25 enters the socket portion 30, the support portion 32b protrudes inward of the socket portion 30. ) Is pushed by the head portion 25a of the ball stud 25, so that the ball stud 25 and the socket portion 30 are easily coupled. After the coupling of the ball stud 25 is completed, as shown in FIG. 6, the support part 32b pushed outward enters the inside of the socket part 30 again by the elasticity of the bending part 32a. 25 is supported by being supported by the support part 32b. Therefore, the separation of the ball stud 25 and the socket portion 30 is prevented unless an external force is applied.

When the washing machine is driven in this state, as shown in FIG. 3, the vibration transmitted from the ball stud 30 coupled to the lower surface of the water tank 11 is transmitted to the rod member 22, and the vibration is transmitted to the cylinder member ( It is attenuated by the action of the rod member 22 advancing and retreating in 21. The rod member 22 and the cylinder member 21 are generally applied to the rod member 22 and the cylinder member 21 when the vibration attenuating operation is performed, so that the ball stud 25 and the socket portion coupled to the support member 32 are provided. 30) is not separated.

When the user needs to remove the shock absorber 20 for repair of the washing machine, the user disconnects the socket 30 and the ball stud 25 in the opposite operation. That is, by pulling in the opposite direction when engaging the socket portion 30 coupled with the ball stud 25 is separated from each other. At this time, the support portion 32b of the support member 32 is elastically deformed in a predetermined amount by the head portion 25b of the ball stud 25, which is to be pulled out of the socket portion 30, and as shown in FIG. Likewise, since the socket portion 30 is pushed outwards, the socket portion 30 can be easily separated from the ball stud 25.

As described above in detail, the shock absorbing device according to the present invention has a coupling between the socket part and the ball stud because the support part of the support member coupled to the socket part is pushed outward of the socket part when the ball stud is coupled to or separated from the socket part. The effect is easy to separate.

Claims (9)

In the shock absorber comprising a socket member provided at each end of the cylinder member and the rod member that is removably coupled to each other, and a ball stud connected to the socket and refractory to the device, A support member coupled to enter the inlet-side inner surface of the socket part from both sides of the socket part outer surface for supporting the ball stud, and a coupling groove formed to penetrate the inner surface and the outer surface on both sides of the socket part for coupling the support member; A shock absorber comprising a. The method of claim 1, The support member has elasticity and includes a bending portion bent to surround the outer surface of the socket portion and a support portion bent from both ends of the bending portion to enter the socket portion through the coupling grooves on both sides of the socket portion. Shock absorber. The method according to claim 1 or 2, The shock absorber, characterized in that the coupling groove is inclined toward the inlet of the socket portion so that the support member can enter from the outer surface of the socket portion toward the inlet of the socket portion. The method of claim 2, The shock absorber, characterized in that the outer surface of the socket portion is recessed to a predetermined depth to correspond to the shape of the bending portion of the support member and the receiving groove is associated with the coupling grooves on both sides of the socket portion. The method of claim 2, The coupling groove is a shock absorber, characterized in that the outer surface side of the socket portion is opened toward the end of the rod member and the cylinder member so that the support member can be easily coupled. A main body case, a washing tank installed inside the main body case for the fresh water of the wash water, and a driving unit installed on the outside of the main body case, and a buffer installed between the washing tank and the main body case for damping vibration of the washing tank. And a shock absorber comprising: a socket portion provided at each end of the cylinder member and the rod member, which are removably coupled to each other, and a ball stud connected to the socket portion in a refractive manner and fixed to the washing tub and the main body case; A support member coupled to enter the inlet-side inner surface of the socket part from both sides of the socket part outer surface for supporting the ball stud, and an inner surface and an outer surface penetrating both sides of the socket part for coupling the support member; Washing machine with a shock absorber, characterized in that it comprises a groove. The method of claim 6, The support member has elasticity and includes a bending portion bent to surround the outer surface of the socket portion and a support portion bent from both ends of the bending portion to enter the socket portion through the coupling grooves on both sides of the socket portion. Washing machines with shock absorbers. The method of claim 7, wherein Washing machine with a shock absorber, characterized in that the coupling groove is inclined toward the inlet of the socket portion so that the support member can enter from the outer surface of the socket toward the inlet of the socket portion. The method of claim 7, wherein Washing machine with a shock absorber, characterized in that the outer surface of the socket portion is recessed a predetermined depth to correspond to the shape of the bent portion of the support member and the receiving groove is associated with the coupling grooves on both sides of the socket portion.