TWI638072B - Suspension structure, drum type washing machine and drum type washing and drying machine - Google Patents

Abstract

Provide a drum type washing machine and a drum type washing and drying When the diameter of the outer tank is enlarged due to the large capacity of the washing capacity, the machine prevents the interference between the outer tank and the coil portion of the suspension mechanism when the outer tank vibrates, so as to ensure the installation space of the outer tank. Suppresses the occurrence of abnormal noise.

Drum-type washing machine (100) and drum-type washing A polyester dryer, the drum type washing machine (100) has a freely rotating drum (21) whose rotation axis (Az) is horizontal or inclined downward, and the drum (21) is contained therein and the washing water is stored. The outer groove (11) and the frame body (1) enclosing the outer groove (11), and provided with at least two sets of suspension mechanisms supporting the upper part of the outer groove (11) in front and rear; the characteristics are: The first suspension mechanism (8) suspends the outer groove (11) forward and upward; the coil portion (8a) of the first suspension mechanism (8) is larger than the maximum diameter of the outer groove (11) The part (L1) for (D1) is more forward; the second suspension mechanism (9) is more rearward than the first suspension mechanism (8); The connecting part of the outer groove (11) is located behind the connecting part of the outer groove (11) of the first suspension mechanism (8), and is connected to the frame of the second suspension mechanism (9). The connecting portion of the body (1) is positioned more rearward than the connecting portion with the outer groove (11) of the second suspension mechanism (9).

Description

Suspension structure, drum type washing machine and drum type washing and drying machine

The present invention relates to a drum-type washing machine that performs washing, dehydration, and a drum-type washing and drying machine that performs washing, dehydration, and drying.

The drum-type washing machine is provided with an outer tank for storing water inside the frame, and a drum for putting clothes in the outer tank. The drum-type washing machine is used for washing, washing and dehydration. In the state where the laundry is leaning during dehydration, if the drum rotates at high speed, a large centrifugal force is generated and a large vibration is generated. In order to reduce this large vibration, the lower part of the outer groove is suspended and supported by a spring or a damper. In addition, in order to prevent the outer groove from collapsing in the front-rear direction, an upper portion of the outer groove and the frame are connected by an elastic member such as a tension spring, and the outer groove is supported forward and backward. When the spring constant of the elastic member of the drum type washing machine is increased, the resonance rotation speed is increased, and the centrifugal force is increased. Therefore, the excitation force applied from the drum to the outer tank is increased, and the outer tank vibration is increased. When the vibration of the outer groove becomes large, it becomes easy to transmit vibration from the outer groove to the frame, and the vibration of the frame increases, so that the discomfort increases. For this reason, the elastic member supporting the upper part of the outer groove ensures the installation space, taking into account the support of the outer groove and the suppression of vibration by a specified spring constant.

Prior art method for elastic members supporting the upper part of the outer groove The surface is disclosed in Japanese Patent Application Laid-Open No. 2014-33749 (Patent Document 1). In this patent publication, in a drum type washing machine having two sets of suspension mechanisms that support the upper part of the outer tank in the front-rear direction, the first suspension mechanism suspends the outer tank forward and upward; and The connection portion of the frame of the first suspension mechanism is positioned rearward than the front end surface of the drum; the second suspension mechanism suspends the outer groove toward the rear and above; The connecting portion of the frame is located further forward than the surface of the rear end of the drum; the connecting portion of the frame with the second suspension mechanism is located more than the outer groove of the first suspension mechanism. The connection is further rear. Furthermore, in Japanese Patent Application Laid-Open No. 2002-346282 (Patent Document 2), it is described that a top plate of the frame is elastically supported by a spring through an upper portion of the outer groove.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2014-33749

[Patent Document 2] Japanese Patent Laid-Open No. 2002-346282

Patent Document 1 uses the first suspension mechanism to suspend the outer grooves forward and upward, and uses the second suspension mechanism to suspend the outer grooves rearward and upward. Due to the increase in the washing capacity, if the diameter of the outer tank is enlarged, the upper and lower spaces of the outer tank and the frame are narrowed, and the space for installing the suspension mechanism is narrowed. Setting up a suspension mechanism becomes difficult. Patent Document 2 is because the coil portion of the tension spring serving as the suspension mechanism is positioned above the portion where the diameter of the outer groove is the largest. If the washing capacity is increased, the diameter of the outer groove is enlarged. The upper and lower space of the mechanism is narrowed. When the outer groove is greatly vibrated, the outer groove interferes with the coil part, and an abnormal noise is generated. In order to prevent interference between the outer groove and the coil portion, when the connection portion of the suspension mechanism of the outer groove is extended upward to ensure the upper and lower space of the outer groove and the coil portion, the upper and lower space of the outer groove and the frame body is increased due to large capacity. When the outer groove is narrowed, the connection part of the suspension mechanism of the outer groove interferes with the frame body, causing abnormal noise.

Further, in Patent Documents 1 and 2, when the outer groove is greatly vibrated and the suspension mechanism, that is, the tension spring is largely deformed in the compression direction, the suspension mechanism is at a free length and loses tension. In this state, if the outer groove is further vibrated, there is no tension in the suspension mechanism, the suspension mechanism falls off from the connection portion, and the outer groove collapses. If the outer groove collapses, the outer groove and the frame continue to collide, which causes abnormal noise.

The present invention is one example of a means for solving the above problems, and is a drum type washing machine and a drum type washing and drying machine. The drum type washing machine has a freely rotating drum whose rotation axis is horizontal or the back side is inclined downward. A suspension body that encloses the drum and stores washing water, and a frame that encloses the outer groove, and is provided with at least two sets of suspension mechanisms supporting the upper part of the outer groove in the front-rear direction; The suspension mechanism is used to suspend the outer groove forward and upward; the coil portion of the first suspension mechanism is used The part with the largest diameter than the outer groove is further forward; the second suspension mechanism is further rearward than the first suspension mechanism; the connection part with the outer groove of the second suspension mechanism is The connection portion with the outer groove of the first suspension mechanism is further behind, and the connection portion with the frame of the second suspension mechanism is connected with the outer groove of the second suspension mechanism. The position is further behind.

According to the present invention, it is possible to provide a drum type washing machine and a drum type washing and drying machine. When the diameter of the outer tank is enlarged due to the large capacity of the washing capacity, the installation space of the suspension mechanism of the outer tank can be ensured to prevent external The abnormal noise generated by interference between the slot and the coil portion of the suspension mechanism, and prevents the suspension mechanism of the outer slot from falling off the connection portion, and prevents the abnormal noise generated by the outer slot from collapsing and colliding with the frame.

[0010] Hereinafter, an example of a mode for implementing the present invention will be described with reference to the drawings. Moreover, the up-down direction, the left-right direction, and the front-back direction are the directions shown in FIG. [0011] (Embodiment 1) FIG. 1 shows a perspective view of a drum type washing machine 100 according to the present invention, and FIG. 2 shows a side view of the internal structure of the drum type washing machine 100. The structure and operation of the drum-type washing machine 100 will be described with reference to FIGS. 1 and 2. [0012] The frame 1 constituting the outer contour of the drum-type washing machine 100 shown in FIG. The housing 1c, the back cover 1d (see FIG. 2), the top cover 1e, and the lower front cover 1f are configured. The top cover 1e is provided with a water supply hose connection port 30 for supplying water to the drum type washing machine 100 from a faucet. The frame 1 is a box-shaped outer frame including a base 1a, and has sufficient strength as the outer frame. [0013] The door 2 is used to block the input port (not shown) provided at the slightly center of the front cover shell 1c for clothes to enter and leave, and is supported by a hinge provided at the front cover shell 1c. It can be switched on and off. The door 2 is opened by releasing the latch mechanism (not shown) by opening the door opening handle 2a, and is closed and closed by pushing the door 2 to the front cover 1c. The front mask case 1c is slightly concentric with the opening portion of the outer tank 11 described later, and has a circular opening portion for allowing clothes to pass in and out. [0014] The operation and display panel 3 provided on the upper part of the housing 1 includes a power switch 4, an operation switch 5, and a display 6. The operation and display panel 3 is electrically connected to a control device 7 (see FIG. 2) provided in the reinforcing member 13 a (see FIG. 2) provided on the upper portion of the housing 1. A cooling fan (not shown) is attached to the control device 7. A drain hose 14 (see FIG. 2) for draining water is installed near the base 1 a. [0015] The inside of the casing 1 of the drum-type washing machine 100 shown in FIG. 2 is provided with an outer tank 11 for storing water. [0016] In front of the outer tank 11, when the washing capacity is increased, in order to ensure the space between the frame body 1 and the outer tank 11, a push-out portion is provided. [0017] The lower part of the outer groove 11 is supported by a pair of suspensions 26 (consisting of a coil spring and a damper) fixed to the left and right sides of the frame body 1. [0018] The upper part of the outer groove 11 is connected with two sets of suspension mechanisms (constructed by a coil spring) in order to suppress the collapse in the front-rear direction of the outer groove 11. The first suspension mechanism 8 is configured such that one end thereof is connected to a front spring retainer 10 a provided with a groove side outside the front of the outer groove 11; the other end of the first suspension mechanism 8 is connected to a frame provided with a front reinforcing member 13. Body side front spring retainer 10. [0019] The second suspension mechanism 9 is configured such that one end thereof is connected to a rear spring retainer 10c provided with a groove on the outer groove side more rearward than the front groove retainer 10a on the outer groove side; One end is connected to the housing-side rear spring retainer 10b provided at the rear and above the outer groove-side rear spring retainer 10c. [0020] As for the material of the outer groove side front spring retainer 10a, the frame side front spring retainer 10, the outer groove side rear spring retainer 10c, and the frame side rear spring retainer 10b, polypropylene or polypropylene is used. Fiber-reinforced plastic is a so-called high-strength resin. Even if a force is applied to the spring holder from the suspension mechanism, the spring holder has strength and can prevent the spring holder from being damaged. [0021] The outer tank 11 includes a drum 21 for storing clothes therein. A motor 22 for rotating the drum 21 is provided behind the outer tank 11. The motor 22 is a shaft 22 a serving as a rotation shaft penetrating the outer groove 11 and coupled to the drum 21. When the motor 22 is driven, the drum 21 is rotationally driven in two directions: forward rotation (clockwise rotation of the drum type washing machine 100 when viewed from the front) and reverse rotation (clockwise rotation of the drum type washing machine 100 when viewed from the front). The rotation axis Az of the drum 21 shown in FIG. 2 is horizontal from the front to the rear of the drum type washing machine 100, or is tilted so that the back side is below (FIG. 2 is tilted so that the back side is below). [0022] A plurality of dewatering holes 21b for discharging washing water in the drum 21 to the outer tank 11 is provided on the inner peripheral surface of the drum 21, or there are intervals in the circumferential direction of the drum 21 for lifting and inputting A plurality of (only one is shown in FIG. 2) blocking bodies 23 are put into the laundry in the drum 21. The blocking body 23 extends in the front-rear direction of the drum 21. [0023] A drum-shaped fluid balancer 21c is provided at the front end of the drum 21. The outer groove 11 is formed into a slightly cylindrical bottom with a front as an opening and a closed rear. The opening of the outer groove 11 and the input port of the frame body 1 are connected via a corrugated tube 16 which can easily expand and contract in the front-rear direction. The bellows 16 is formed by a ring-shaped gasket, that is, an elastomer made of synthetic rubber or a synthetic rubber material, and the water is sealed in the drum 21 in a manner of closing the door 2. In addition, the opening of the housing 1, the opening of the outer tank 11, and the opening of the drum 21 are communicated with each other so that the laundry can be put in and out of the drum 21 by opening the door 2. The outer groove 11 can be divided into a side including an opening portion and a side on which the motor 22 is mounted. [0024] One end of a water supply hose 17 is connected to the outer tank 11 via a water supply valve 15 and a detergent container 12. The water supply valve 15 is opened, and washing water is supplied from the water supply hose connection port 30 into the outer tank 11. [0025] A drainage hose 14 provided in the lower portion of the outer tank 11 is provided with a circulation pump 27, a yarn filter 28, and a drainage valve 14a in the drainage path, and the washing water is stored outside by closing the drainage valve 14a to supply water. In the tank 11, the drain valve 14a is opened, and the washing water in the outer tank 11 is discharged to the outside of the machine. [0026] Below the outer tank 11, a vibration sensor 18 that detects the vibration amplitude of the outer tank 11 is provided. If the vibration sensor 18 exceeds a predetermined value set in advance, the dehydration operation is stopped. [0027] With the above configuration, the operation of the drum-type washing machine 100 will be described. When the power switch 4 is pressed, the drum type washing machine 100 is started. The door opening handle 2a is opened, the door 2 is opened, and laundry is put into the drum 21. After the door 2 is closed, the operation switch 5 is operated, and the operation is started. When the operation is started, the drum 21 is rotated to calculate the weight of the laundry before water injection. Furthermore, the weight of the laundry in the drum 21 is calculated based on the rotation speed and the current value of the motor 22. Based on the calculated weight of the laundry, the washing amount to be injected is displayed on the display 6. After a predetermined amount of detergent is put into the detergent container 12, the washing cycle is started. During the washing process, the water supply valve 15 is opened, and the water supplied from the water supply hose connection port 30 is supplied into the outer tank 11 together with the detergent through the water supply hose 17 and the detergent container 12. At this time, the undissolved detergent and water are vigorously stirred in the circulation pump 27 to effectively dissolve the detergent, and a high-concentration detergent liquid can be produced. After this operation has been performed for a specified time, the drum 21 repeats the specified time to perform the washing operation of forward rotation, stop, reverse rotation, and stop. At this time, the clothes are raised and dropped by the blocking body 23. After the washing cycle is performed, a dehydration cycle is performed. First, the drain valve 14 a is opened, and water passing through the outer tub 11 of the drain hose 14 is discharged to the outside of the drum-type washing machine 100. Next, the clothes are attached to the inner peripheral surface of the drum 21. The drum 21 is rotated at a low speed (for example, 60 r / min) in one of the directions, and the laundry containing water is extended by the blocking body 23 during the rotation of the drum 21 during the rotation of the drum 21, and is extended to Inner surface. Next, the rotation speed of the drum 21 is gradually increased, and clothes are attached to the inner peripheral surface of the drum 21. When clothes are attached to the inner peripheral surface of the drum 21, the rotation speed of the drum 21 is gradually increased. On the one hand, the resonance rotation speed of the outer tank 11 or the frame 1 is passed, and on the other hand, the drum 21 reaches a specified rotation speed (for example, 900 r / min). ). After that, the drum 21 rotates for a predetermined time, after which the water contained in the clothes is dehydrated by centrifugation. [0028] When the laundry attached to the inner peripheral surface of the drum 21 is biased, the vibration amplitude of the outer tank 11 becomes larger when the pulsation (rotational fluctuation) of the rotation speed of the drum 21 or the resonance rotation speed of the outer tank 11 is increased. . When the vibration sensor 18 detects the rotation variation of the drum 21 or the value of the vibration amplitude of the outer tank 11 is greater than a specified value, in order to reduce the imbalance, the dehydration operation is stopped, and the drum 21 is repeatedly rotated forward and reverse Untie action or water injection to correct the bias of clothes. [0029] After performing the dehydration stroke, the water supply valve 15 is opened, and the water supplied from the water supply hose connection port 30 is supplied to the outer tank 11 together with the detergent through the water supply hose 17 and the detergent container 12. Inside. After the water is supplied into the outer tank 11, a washing stroke is performed. In this washing cycle, similarly to the washing cycle described above, the drum 21 repeats the operations of forward rotation, stop, reverse rotation, and stop. At this time, the stirring operation and the washing operation of repeatedly dropping the clothes lifted by the blocking body 23 for a predetermined time are performed. [0030] After that, the aforementioned dehydration stroke and cleaning stroke are repeated for the specified number of times, and then transferred to the final dehydration stroke. The dehydration time in the final dehydration course is set to be longer than the aforementioned dehydration course. [0031] The drum-type washing and drying machine is provided with a warm-air heater, a warm-air fan, and the like (all not shown). After the final dehydration process, the drum is washed and dried at a lower speed than during washing. Rotate, spray warm air to the clothes, and dry the clothes. [0032] Next, this embodiment will be described in detail with reference to FIGS. 2 and 3. When the maximum diameter D1 of the outer tank 11 is enlarged due to the increase in the washing capacity, the first suspension of the outer tank 11 can be ensured. The first suspension mechanism 8 in the installation space of the mechanism 8. [0033] The first suspension mechanism 8 includes a coil portion 8a, a hook portion 8b on the outer groove side, and a hook portion 8c on the frame body side. The hook portion 8b on the outer groove side of the first suspension mechanism 8 and the front groove holder 10a on the outer groove side of the outer groove 11 are fixed to the maximum diameter D1 of the outer groove 11 with screws (not shown). The part L1 is further a pushing part of the outer groove 11 in front. In addition, the first suspension mechanism 8 and the second suspension mechanism 9 may be made of a synthetic rubber or a synthetic rubber material that expands and contracts when the outer tank 11 vibrates forward or backward. In addition, in order to connect the first suspension mechanism 8 and the second suspension mechanism 9 to the outer groove 11 or the frame 1, they may be fixed by screws. [0034] By fixing the outer groove-side front retainer 10a to the pushing portion of the outer groove 11, the coil portion 8a can be further forward than the portion L1 which becomes the maximum diameter D1 of the outer groove 11, and the outer groove 11 and the coil can be secured. The up and down space of the portion 8a and the up and down space of the frame body 1 and the outer groove side front holder 10a. Therefore, even if the diameter of the outer groove 11 is enlarged due to the increase in the washing capacity, and the upper and lower spaces of the outer groove 11 and the frame body 1 are narrowed, the coil portion 8a and the outer groove 11 can be prevented when the outer groove 11 vibrates. The interference of the frame 1 or the front groove holder 10a of the outer groove side can prevent the occurrence of abnormal noise. [0035] Furthermore, as described above, even when the diameter of the outer groove 11 is enlarged, the installation space in the vertical direction of the first suspension mechanism 8 can be secured. For this reason, the first suspension mechanism 8 can make the coil portion the same shape before and after the diameter of the outer groove 11 is enlarged. By preventing the spring constant of the first suspension mechanism 8 from increasing, the resonance rotation speed can be prevented from increasing. In order to prevent the increase of the resonance rotation speed, the vibration force caused by the centrifugal force applied from the drum 21 to the outer tank 11 during the resonance of the outer tank 11 can be reduced, and the increase in the vibration amplitude of the outer tank 11 can be suppressed. Since the increase in the vibration amplitude of the casing 1 due to the transmission from the outer tank 11 to the casing 1 is suppressed, it is possible to suppress the discomfort of the user. [0036] In addition, the suspension mechanism shown in this embodiment example can also be applied to a drum-type washing and drying machine. [0037] (Embodiment 2) Next, Embodiment 2 will be described in detail with reference to FIG. 4, FIG. 5, FIG. 6, FIG. 7, FIG. 8 and FIG. [0038] In addition, the drum-type washing machine 100 has basically the same structure as that of the first embodiment, and the following description will be directed to the difference. [0039] FIG. 4 is a central sectional view of the drum-type washing machine 100 according to the present embodiment, and FIG. 5 is a state in which the outer tub 11 is statically supported. In the second embodiment, the outer groove-side fall preventing member 31 is disposed in front of the outer groove-side rear spring retainer 10 c, and the frame-side fall prevention member 31 a is disposed in front of the outer groove-side fall preventing member 31. The distance between the outer groove side fall prevention member 31 and the frame body side fall prevention member 31a is from the state of statically supporting the outer groove 11 to the outer groove 11 moving forward. The first suspension mechanism 8 is in front of a free length or a free length. The distance of mutual interference. The height of the outer groove-side fall-off preventing member 31 and the frame body-side fall-off preventing member 31 a are heights that interfere with each other when the outer groove 11 vibrates greatly in the forward direction.

In a state where the outer groove 11 is statically supported, the first suspension mechanism 8 and the second suspension mechanism 9 are hooked to the outer groove 11 in a state of being stretched, and the first suspension mechanism and the second suspension mechanism are outside. Because the front and rear of the groove 11 are in a balanced state, the length of the first suspension mechanism 8 and the second suspension mechanism 9 is longer than the free length.

As described in Example 1 or Patent Document 1, when the outer groove 11 is suspended forward and upward with the first suspension mechanism 8, if the outer groove 11 vibrates greatly in the forward direction, the first suspension mechanism 8 contracts, and the first The two suspension mechanisms 9 are stretched. When the vibration change in the front direction of the outer groove 11 is large, the amount of contraction of the first suspension mechanism 8 increases, the first suspension mechanism 8 becomes a free length, and loses tension. In this state, if the outer groove 11 is further vibrated, the first suspension mechanism 8 is disengaged from the frame-side front spring retainer 10 or the outer groove-side front spring retainer 10a, the outer groove 11 collapses, and the outer groove 11 and the frame The body 1 collides and generates abnormal noise.

FIG. 6 shows a state in which the outer groove 11 is largely vibrated in a forward direction by a dotted line. The outer groove-side fall-off preventing member 31 and the frame-side fall-off preventing member 31 a are distances that interfere with each other when the first suspension mechanism 8 becomes a free length or a length before the free length. For this, the first suspension When the mechanism 8 has a free length or a length before the free length, the vibration to the front of the outer groove 11 is suppressed. Thereby, the first suspension mechanism 8 is prevented from falling off from the frame-side front spring retainer 10 or the outer groove-side front spring retainer 10a, and the outer groove 11 is prevented from collapsing. As a result, the outer groove 11 and the frame 1 can be prevented from colliding. Caused by abnormal noise.

The first suspension mechanism 8 is required to apply a predetermined force in the horizontal direction in order to prevent the outer groove 11 from falling back and forth. Here, as in Embodiment 1 or Patent Document 1, when the first suspension mechanism 8 is suspended forward and upward by the outer groove 11, a predetermined force is generated in the horizontal direction, and the first suspension mechanism is horizontally disposed. At 8 o'clock, the spring constant of the first suspension mechanism 8 becomes larger. As the spring constant of the first suspension mechanism 8 increases, the resonance rotation speed increases and the centrifugal force increases. Therefore, the vibration of the outer groove 11 increases. When the vibration of the outer tank 11 is increased, the vibration of the outer tank 11 is transmitted to the frame 1, the vibration of the frame 1 is increased, and the discomfort increases. For this reason, the first suspension mechanism is desired to be horizontally arranged.

FIG. 7 shows a state in which the first suspension mechanism 8 is arranged horizontally as described in Patent Document 2.

When the first suspension mechanism 8 is arranged horizontally, if the outer groove 11 vibrates greatly forward, the first suspension mechanism 8 is easily deformed in the horizontal direction and easily becomes a free length. The frame-side front spring retainer 10 or the outer groove-side front spring retainer 10a falls off, and the outer groove 11 easily collapses.

FIG. 8 shows a state in which the outer groove-side fall-off preventing member 31 and the frame-side fall-off preventing member 31 a described in the embodiment are provided in FIG. 7. Even if the first suspension mechanism 8 is arranged in the horizontal direction, in a case where the first suspension mechanism 8 is easily deformed in the horizontal direction, as shown in FIG. 9, the method is such that the outer groove side fall prevention member 31 and the frame body side fall prevention member 31 a interfere with each other. In order to suppress the vibration of the outer groove 11 and also arrange the first suspension mechanism 8 in the horizontal direction, the first suspension mechanism 8 can be prevented from falling off from the frame-side front spring retainer 10 or the outer groove-side front spring retainer 10a. The collapse of the outer groove 11 can prevent the occurrence of abnormal noise caused by the collision between the outer groove 11 and the frame 1. [0047] Therefore, as described in the first embodiment, the outer groove-side fall-off preventing member 31 and the frame-side fall-off preventing member 31a described in this embodiment example can be horizontally arranged as an outer groove suspended toward the front and above. 11 的 第一 挂 机构 8。 11 of the first suspension mechanism. When the first suspension mechanism 8 is arranged horizontally, compared with the case where the first suspension mechanism 8 is arranged forward and upward, the spring constant can be reduced, the increase in the resonance rotation speed can be suppressed, and the vibration of the outer groove 11 can be prevented from increasing. For this reason, the vibration transmitted from the outer groove 11 to the housing 1 can be reduced. [0048] According to the present invention, the first suspension mechanism 8 is prevented from falling off from the frame-side front spring retainer 10 or the outer groove-side front spring retainer 10a and the outer groove 11 is collapsed, which can prevent the outer groove 11 from colliding with the frame 1. The occurrence of abnormal noise. Furthermore, because the first suspension mechanism 8 can be arranged horizontally, the vibration transmitted from the outer groove 11 to the housing 1 at the time of resonance can be reduced, and the increase in the vibration of the housing 1 can be suppressed, so that the discomfort can be reduced. [0049] Furthermore, the anti-falling member shown in this embodiment is applicable to the drum-type washing machine 100 and the drum-type washing and drying machine. [0050] Furthermore, the rear cover 1d behind the motor 22 is provided with a protrusion 40, and the distance between the motor 22 and the protrusion 40 is a state in which the outer groove 11 is statically supported from the second suspension mechanism 9, and the outer groove 11 moves At the rear, until the second suspension mechanism 9 becomes less than the free length, the rear surface of the motor 22 interferes with the protruding member 40. After this, until the second suspension mechanism 9 reaches the free length, the rear of the outer groove 11 is suppressed. Due to the directional vibration, it is possible to prevent the second suspension mechanism 9 from falling off from the outer groove side rear spring holder 10c (see FIG. 4). [0051] Furthermore, by using the same material as the outer groove-side rear spring retainer 10c, the outer groove-side fall prevention member 31 in this embodiment example can be made with the outer groove-side fall prevention member 31 and the outer groove side. The rear spring retainer 10c is formed as an integral part. Similarly, by using the same material as that of the frame-side back spring retainer 10b, the frame-side fall-prevention member 31a can be formed as an integral part with the frame-side back-spring retainer 10b. In the manner of preventing the falling-off member and the spring holder from being integrated into one part, the increase in the number of parts can be prevented, and the production cost caused by the reduction of the production time can be reduced.

[0052]
1‧‧‧frame
8‧‧‧ the first suspension mechanism
8a‧‧‧Coil Department
8b‧‧‧Hook on the side of the outer groove
8c‧‧‧Hook on the side of the frame
9‧‧‧ second suspension mechanism
10‧‧‧Frame front spring retainer
10a‧‧‧ Outer groove side front spring retainer
10b‧‧‧Frame-side rear spring retainer
10c‧‧‧Rear spring side retainer
11‧‧‧ Outer trough
13‧‧‧ Front reinforcement member
22‧‧‧ Motor
31‧‧‧Protection member on the outer groove side
31a‧‧‧Frame-side anti-falling member
40‧‧‧ protrusion
100‧‧‧ drum washing machine

Fig. 1 is a perspective view of a drum-type washing machine according to an embodiment of the present invention.

[Fig. 2] Fig. 2 is a central cross-sectional view seen from a right side showing an internal structure of a drum-type washing machine according to an embodiment of the present invention.

[Fig. 3] Fig. 3 is an enlarged view of Fig. 2A showing a suspension mechanism in the first embodiment.

[Fig. 4] Fig. 4 is a central cross-sectional view seen from a right side showing an internal structure of the drum-type washing machine in the second embodiment. [Fig. 5] is an enlarged view of B in Fig. 4 in the second embodiment. [Fig. 6] Fig. 6 is a diagram showing an example of the effect of the anti-falling member of Fig. 5 in the second embodiment. [FIG. 7] A diagram showing an example of the suspension mechanism in the second embodiment of the horizontal arrangement. [Fig. 8] Fig. 7 is a diagram including a detachment preventing member in Fig. 7 in the second embodiment. [FIG. 9] It is a figure which shows an example of the effect of the fall prevention member of FIG. 8 in 2nd Example.

Claims (5)

A suspension structure for a drum-type washing machine or a drum-type washing and drying machine. The drum-type washing machine or the drum-type washing and drying machine has a freely rotating drum with a rotating shaft horizontal or an inner side inclined downward, and an inner bag. The drum also stores an outer tank for washing water, a frame body including the outer tank, and a suspension structure provided with at least two sets of suspension mechanisms for supporting the upper part of the outer tank in front and rear; and It is characterized in that the first suspension mechanism suspends the outer groove toward the front and above; the coil portion of the first suspension mechanism is more forward than the portion with the largest diameter of the outer groove; the second The suspension mechanism is located further behind than the first suspension mechanism; the connection portion between the second suspension mechanism and the outer groove is located at a position more than the connection portion between the first suspension mechanism and the outer groove. Further rear; the connection portion between the second suspension mechanism and the frame is located further rearward than the connection portion between the second suspension mechanism and the outer groove. The suspension structure according to claim 1, wherein the outer groove is provided with an anti-falling member on the outer groove side at a position farther forward than the connection portion between the second suspension mechanism and the outer groove; The frame-side fall-prevention member is provided further forward than the fall-out prevention member on the outer groove side; the distance between the frame-side fall prevention member and the outer groove-side fall prevention member is determined as: static support In the state of the outer groove, the outer groove is moved forward, the first suspension mechanism is contracted, and before the first suspension mechanism becomes a free length, or when the first suspension mechanism becomes a free length, the frame-side preventing member and the outer The distance on the groove side that prevents the falling members from interfering with each other. The suspension structure according to claim 1 or 2, wherein the aforementioned first suspension mechanism is arranged horizontally. A drum type washing machine having a suspension structure according to any one of claims 1 to 3. A drum-type washing and drying machine having a suspension structure according to any one of claims 1 to 3.