JP2006000302A - Drum type washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact drum type washing machine with a water tub 2 supported by hanging rod type suspensions 15 without enlarging a casing 1. <P>SOLUTION: The hanging rod type suspensions 15 to support the water tub 2 in the casing 1 are inclined/disposed crossingly the periphery of a circumferential part of both end faces 2a of the water tub 2 between the upper part of the casing 1 and the lower side of a drum part 2b of the water tub 2. Accordingly, at least part of a support part 16 for receiving the upper part of the hanging rod type suspensions 15, mounted on the upper part of the casing 1, is located on the outer side of both end faces 2a of the water tub 2, and at least part of a support part 17 for receiving the lower part of the hanging rod type suspensions 15, mounted on the water tub 2, is located on the inner side of the outermost face of the drum part 2b of the water tub 2 and on the inner side of both end faces 2a of the water tub 2. As a result, the hanging rod type suspensions 15 can be disposed close to the water tub 2, and therefore, the gap between the water tub 2 and the casing 1 can be narrowed and the casing 1 can be made compact. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a drum-type washing machine, and particularly relates to a suspension structure that supports a water tank in the casing.

  A drum-type washing machine has a cylindrical water tank for storing washing water in a housing, and a cylindrical body that is rotatably provided around a substantially horizontal rotation axis inside the water tank. And a motor for rotating the drum. This drum is rotated forward / reversely at a rotation speed of about 45 r / min to wash the clothes, and rotated at a high rotation speed of 700 r / min or more to remove moisture from the clothes for dehydration.

  The water tank that rotatably supports the drum receives force in the up / down, front / rear, and left / right directions by the washing / dehydrating operation. In particular, at the time of dehydration that is rotated at a high rotational speed, clothing sticks to the inner wall of the drum, but receives a large centrifugal force when the sticking is offset. The water tank is elastically supported from the housing through a spring or the like so that such a force is not transmitted as much as possible to the housing and the place where the housing is installed. Further, if the water tank is supported only by the spring, the water tank vibrates greatly when passing through the resonance frequency in the middle of starting dehydration, so that the damper is attenuated to suppress it.

  Conventionally, a water tub in a drum-type washing machine is supported by a plurality of cylinder-type suspensions from the inner bottom surface of a housing, as in Patent Document 1, for example. If the water tank is supported from the bottom in this way, in order to prevent the water tank from falling down due to force from side to side and back and forth, the cylinder type suspension that is standing almost vertically does not fall down on the inner bottom surface of the housing. It must be firmly supported. When a water tank supported by using a plurality of such suspensions vibrates in the left / right / front / rear direction, the suspension standing substantially vertically also swings, giving a large force to the inner bottom surface and increasing the vibration of the casing.

With respect to such a problem, in Patent Document 2, a suspension rod type suspension (suspension rod) is suspended from the upper part of the housing, and a spring receiving part at the lower end of the suspension rod type suspension and a support receiving part of the water tank are provided. The water tank is elastically supported with a compression spring interposed therebetween. This suspension rod type suspension is not rigidly supported with respect to the housing, and can move relatively freely along the spherical surfaces provided at the four corners of the upper portion of the housing. Therefore, even if the water tank vibrates left and right and front and rear, the suspension rod type suspension also rocks. However, the movement does not apply a large force to the housing, and the vibration of the housing can be reduced.
JP 2003-93786 A JP-A-9-313766

  As described in Patent Document 2, it is desirable to support with a suspension rod type suspension from the viewpoint of vibration reduction. However, since this suspension rod type suspension passes outside the water tank, a wide space is provided between the casing and the water tank. It must be done, and the casing becomes large. For example, as shown in FIG. 2 of Patent Document 2, a suspension rod type suspension that supports the trunk of the aquarium passes through the outside of the trunk, and accordingly, a support receiving portion provided at the lower part of the aquarium Is on a business trip outside the aquarium. Therefore, it is necessary to widen the gap between the housing and the water tank in the left-right direction. Further, as shown in FIG. 13 of Patent Document 2, when support receiving portions are provided at both front and rear end surfaces of the water tank, the gap between the right and left casing and the water tank can be reduced. Travels from the front and back, so the gap between the casing and the water tank needs to be widened in the front-rear direction, and the casing becomes large.

  The present invention has been made in view of such a point, and an object of the present invention is to provide a drum-type washing machine that supports a water tank with a suspension rod-type suspension without increasing the size of the casing. It is in.

  In order to achieve the above object, the present invention provides a drum-type washing machine having a structure in which a water tub provided with a washing drum therein is supported by a suspension rod-type suspension having a compression spring from the upper part of the housing. This suspension is arranged so as to be inclined between the upper part of the casing and the lower side of the body part of the water tank so as to cross the vicinity of the circumferential part of both end faces of the water tank.

  For this purpose, at least a part of the support part that receives the upper part of the suspension rod type suspension provided at the upper part of the housing is positioned outside both end faces of the water tank, and the lower part of the suspension rod type suspension provided in the water tank is provided. At least a part of the supporting portion to be received is configured to be located inside the outermost surface of the body portion of the water tank and inside the both end faces of the water tank. Accordingly, the suspension rod type suspension is inclined from the outside to the inside of the both end faces of the aquarium and is disposed so as to cross the vicinity of the circumferential portion of the both end faces of the aquarium, so that it can be disposed close to the aquarium. .

  In addition, the suspension rod type suspension is placed closer to the water tank by positioning at least a part of the support part that receives the suspension rod type suspension upper part at the upper part of the casing inside the outermost surface of the outer periphery of the water tank body. can do.

  Moreover, the support part which receives the lower part of the suspension rod-type suspension provided in the water tank has a structure in which a convex part is provided outward from the trunk part of the water tank and is provided so as to protrude in the direction of both end surfaces of the water tank. .

  Also, the support portion for receiving the suspension rod type suspension that supports the front portion of the water tank provided at the upper portion of the housing is provided below the uppermost portion of the water tank and above the central axis of the water tank. To do.

  In addition, the support part that receives the suspension rod type suspension that supports the rear part of the water tank provided at the upper part of the housing is at the same height as the support part that receives the suspension rod type suspension that supports the front part of the water tank. Alternatively, it is provided above.

  In addition, a support part for receiving the lower part of the suspension rod type suspension provided at the front part of the water tank and a support part for receiving the lower part of the suspension rod type suspension provided at the rear part of the water tank are provided at different height positions. Try to reduce vibration.

  Moreover, it is set as the structure by which the bending part bend | folded inside the upper part of a housing | casing is bend | folded in the position higher than the accessory components attached to the both end surfaces and both end surfaces of a water tank.

  In addition, the water tank is not supported only by the suspension rod type suspension, but the rear part of the water tank is supported by a plurality of suspension rod type suspensions from the upper part of the housing, and the front part of the water tank is disposed above the lower part of the housing. It is good also as a structure supported by the suspension arrange | positioned toward.

  As described above, in the present invention, the suspension rod type suspension that elastically supports the water tank from the upper part of the casing is disposed with an inclination so as to cross the vicinity of the circumferential portion of both end faces of the water tank, thereby approaching the water tank. be able to. Moreover, the protrusion from both ends can be made small by arrange | positioning the support part which receives the lower part of the suspension rod-type suspension provided in the water tank inside the both ends of a water tank. Therefore, the clearance gap between a water tank and a housing | casing can be narrowed and the housing | casing of the drum type washing machine which supported the water tank with the suspension rod type suspension can be made compact.

[Example 1]
A first embodiment of the present invention will be described with reference to FIGS. The washing machine shown here is a so-called top loading type drum type washing machine, FIG. 1 is a front view showing the inside of the drum type washing machine of this embodiment, and FIG. 2 is the inside of the drum type washing machine of this embodiment. FIG. 3 is a top view showing the inside of the drum type washing machine of this embodiment, FIG. 4 is a sectional view showing the inside of the water tub, and FIG. 5 shows the upper part of the casing of the drum type washing machine of this embodiment. FIG. 6 is an enlarged view of a suspension rod type suspension, and FIG. 7 is an enlarged perspective view showing an end face of a water tank.

  The drum type washing machine of the present embodiment is installed in a casing 1 such that a cylindrical water tank 2 is substantially horizontal and its central axis extends to the left and right. As shown in FIG. 4, a cylindrical drum 3 is rotatably provided in the water tank 2. Although not shown, the drum 3 has a large number of holes, and when the drum 3 is rotated at a high rotational speed, water is discharged from these holes and dewatering is performed.

  Further, as shown in FIG. 4, baffles 4 that protrude on the inner side of the drum 3 are provided at a plurality of locations, and when washing, clothes gathered in the lower part of the drum 3 are picked up by these baffles 4. The clothes are dropped from the upper part in the drum 3 to be washed. A motor 5 for performing these operations is arranged outside one end face of the water tank 2, and a rotor of the motor 5 is fastened to a rotating shaft attached to the end face of the drum 3 to rotate the drum 3. The drum 3 can be rotated to the left or right by a motor 5, and washing, rinsing, and dewatering of clothes are performed by the rotation of the drum 3.

  A top cover 23 is fixed to the upper portion of the housing 1, and a door 6 serving as an entrance for clothes (laundry) is provided at an upper front portion of the top cover 23. The water tank 2 and the drum 3 are also provided with doors 7 and 8 at the same position as the door 6 so that clothes can be put into the drum 3. In order to widen the doors 6, 7, and 8 serving as clothes entry ports, the doors have a structure that opens from the front surface to the top surface.

Further, a water supply port 9, a detergent box 10, and an electromagnetic valve 11 are provided on the upper rear side of the top cover 23 to constitute a water supply unit. Water is supplied to the water tank 2 by opening the electromagnetic valve 11 of this water supply unit.
Moreover, the drainage hose 13 extended outside the solenoid valve 12 and the housing | casing 1 is provided in the lower part of the water tank 2, and comprises the drainage unit. By opening the electromagnetic valve 12 of this drainage unit, the water stored in the water tank 2 is drained outside the drum type washing machine.

  In the drum type washing machine of this embodiment, the water tub 2 is elastically supported by four suspension rod type suspensions 15 (15A, 15B, 15C, 15D) suspended from the four corners of the upper part of the housing 1. . Here, as a characteristic configuration, the suspension rod type suspension 15 is provided between the upper part of the casing 1 and the lower side of the body part (circumferential surface part) 2b of the water tank 2, and the circumferential parts of both end faces 2a of the water tank 2. It is inclined to cross the vicinity.

The upper part of the housing 1 is bent toward the inside of the housing 1 as shown in FIG. The bent portion 1a is bent at a position higher than the both end faces 2a of the water tank 2 and the accessory parts attached to the both end faces 2a. By doing in this way, the clearance gap between the water tank 2 and the housing | casing 1 can be narrowed, and the width | variety of the housing | casing 1 can be made small.
Corner plates 16 (16A, 16B, 16C, 16D) having hemispherical depressions 16a are fixed to the four corners of the casing 1 in the bent portion 1a, and the corner plates 16A, 16B, 16C at the four corners are fixed. , 16D, suspension rod type suspensions 15A, 15B, 15C, 15D are suspended.

  The height of the front surface of the housing 1 is set close to the lower end of the door 7 in accordance with the door 7 that opens from the front surface to the upper surface provided in the water tank 2. Further, only the front corner plates 16A and 16B are raised to a position higher than the height of the front surface of the other casing 1 to widen the gap between the corner plates 16A and 16B and the water tank 2. However, if the gap is sufficiently secured, the same height may be used. The upper surface of the housing 1 extends from the height almost horizontally by the size of the corner plates 16A and 16B, then draws a gentle curve, extends to the rear of the housing 1, and further extends to the back almost horizontally. And

  Accordingly, the front suspension rod suspensions 15A and 15B are suspended from a position lower than the upper portion of the water tank 2 and higher than the central axis, and the rear suspension rod suspensions 15C and 15D are more than the suspension rod suspensions 15A and 15B on the front side. Can be hung from a high position. At this time, the suspension rod type suspensions 15C and 15D on the rear side use suspension rods longer than the suspension rod type suspensions 15A and 15B on the front side.

  As a result of the structure in which the heights of the hanging positions are different between the front and rear in this way, the opening area of the upper portion of the housing 1 can be widened. When assembling the drum-type washing machine, the water tub 2 is inserted from the upper part of the housing 1. Although not shown in the figure, in the case of a drum-type washing and drying machine, in addition to the components of this embodiment, a drying unit such as a heater or a blower fan is often attached to the upper rear of the water tank 2, and the above structure Then, since the space behind the upper part of the water tank 2 can be made wide, it becomes advantageous. As described above, it is desirable to suspend the rear suspension rod suspensions 15C and 15D from a position higher than the front suspension rod suspensions 15A and 15B, but the suspension suspension may be suspended from the same height.

  FIG. 6 shows the structure of the suspension rod type suspension 15. The suspension rod type suspension 15 includes an elongated rod suspension rod 15a made of metal, a disk-shaped spring receiver 15b provided at the lower end of the suspension rod 15a, a spring 15c placed on the spring receiver 15b, A cylindrical sliding cylinder 15d that receives the upper end of the spring 15c and a hemispherical retaining member 15e provided at the upper end of the suspension rod 15a are configured. The inner surface of the sliding cylinder 15d is in contact with the spring receiver 15b, and provides sliding damping as the spring moves up and down. The latching member 15e is configured to swing the suspension rod type suspension 15 so as to be swingable in a state where the suspension member 15e is placed on the semispherical depressions 16a of the corner plates 16A, 16B, 16C, and 16D fixed to the upper four corners of the housing 1. It is to stop and support.

  Further, the upper end portion of the sliding cylinder 15d is formed in a hemispherical shape, and this portion is fitted in the hemispherical recess portion 17a of the suspension receiver 17 (17A, 17B, 17C, 17D) provided in the water tank 2. Thus, the water tank 2 is supported so as to be swingable. Here, the suspension receiver 17 protrudes toward the left and right end surfaces 2 a of the water tank 2 from the water tank convex portions 18 provided near the left and right end surfaces 2 a below the center line of the body portion 2 b of the water tank 2. Is formed. As in this embodiment, it is desirable that the suspension receiver 17 is formed integrally with the water tank convex portion 18 because the number of parts can be reduced, but this is made as a separate part and fixed to the water tank convex portion 18. Also good.

  With this configuration, as shown in FIG. 1, at least a part of the semispherical depression 17 a of the suspension receiver 17 enters the inner side of the both end surfaces 2 a of the water tank 2. Therefore, the suspension rod type suspension 15 is attached so as to incline from the outer side to the inner side with respect to the both end surfaces 2a of the water tank 2, and the suspension rod 15a passes through the vicinity of the circumferential portion of the both end surfaces 2a of the water tank 2, It arrange | positions so that a part may enter inside from the both end surfaces 2a.

In FIG. 13 of Patent Document 2 cited as a conventional example, the suspension receiver is provided on both end faces of the water tank, and therefore travels larger than both end faces of the water tank. Also, since the suspension rod type suspension is installed at an inclination, the suspension rod type suspension must be arranged outside the both end surfaces of the aquarium so that the sliding cylinder below the suspension receiver does not contact the both end surfaces of the aquarium. Further, the suspension receiver travels to the outside of both end faces of the water tank.
In the present embodiment, the suspension receiver 17 is provided on the body portion 2b of the water tank 2, and at least a part thereof is on the inner side of the both end faces 2a of the water tank 2, so that the outward protrusion is reduced. Therefore, the gap (gap in the left-right direction) from both end surfaces 2a of the water tank 2 to the housing 1 can be narrowed, and the size of the housing 1 can be reduced.

  Further, as shown in FIG. 2, the body 2 b of the water tank 2 is the outermost surface 2 c in the vertical direction, and the vicinity of the center is the outermost surface 2 c in the front-rear direction, but the suspension receiver 17 is inside the outermost surface 2 c of the body 2 b of the water tank 2. It is provided in the position. Further, the corner plates 16 provided at the four corners of the housing 1 can be arranged so that a part thereof is inside the outermost surface 2 c of the body portion 2 b of the water tank 2. With this structure, the suspension rod type suspension 15 can be brought close to the water tank 2 also in the front-rear direction, and a gap (gap in the front-rear direction) from the trunk of the water tank 2 to the housing 1 can be narrowed. The size of 1 can be made smaller.

  Moreover, as shown in FIG. 7, the both ends 2a of the water tank 2 are not planes, but the rib 19 is formed. The ribs 19 are configured by radial ribs 19a extending radially from the vicinity of the center of both end surfaces 2a of the water tank 2 and circumferential ribs 19b that are concentric with the circumference of both end surfaces 2a of the water tank 2. The circumferential rib 19b is formed along the outer periphery of the both end surfaces 2a of the water tank 2, and the suspension rod 15a is arranged so as not to contact the circumferential rib 19b and to pass as close as possible. For this purpose, at least a part of the recess 17a of the suspension receiver 17 is arranged on the inner side of the end face of the circumferential rib 19b. Therefore, in the case of such an end face shape of the water tank, the position of the recess 17a of the suspension receiver 17 is designed on the inner side of the end face of the circumferential rib 19b.

  Moreover, as shown in FIG. 8, the flange 20 may be provided in the both end surfaces 2a of the water tank 2. FIG. The flange 20 has a central flange portion 20a that holds a bearing for supporting the rotating shaft of the drum 3 in the vicinity of the center of both end surfaces 2a of the water tank 2, and an outer peripheral portion radially from the central flange portion 20a to fix the flange 20 And a fixed flange portion 20b extending up to. In this case as well, it is desirable that the suspension rod 15a is arranged so as not to contact the fixed flange portion 20b and to pass as close as possible. For this purpose, at least a part of the recess 17 a of the suspension receiver 17 is arranged inside the end face of the flange 20. Therefore, in the case of such an end face shape of the water tank, the position of the recessed portion 17a of the suspension receiver 17 is designed inside the end face of the flange 20.

  In addition, as shown in FIG. 9, counterweights 21 may be provided on both end surfaces 2 a of the water tank 2. This counterweight 21 is fixed with bolts 22 near the outer periphery at the bottom of both end surfaces 2a in order to adjust the center of gravity of the water tank 2, drum 3 and motor 5 and to increase the mass in order to reduce vibration. Has been. In this case as well, it is desirable that the suspension rod 15a is arranged so as not to contact the counterweight 21 and to pass as close as possible. For this purpose, at least a part of the recess 17 a of the suspension receiver 17 is arranged inside the end face of the counterweight 21. Therefore, in the case of such an end face shape of the water tank, the position of the recessed portion 17 a of the suspension receiver 17 is designed on the inner side of the end face of the counterweight 21.

  In the drum type washing machine of the present embodiment, the rear sides 17C and 17D of the suspension receiver 17 are arranged at higher positions than the front sides 17A and 17B. By arranging in this way, it is possible to reduce vibration when clothes and water are put into the water tank 2 and washing is performed. That is, when washing, the drum 3 is rotated so that the baffle 4 scoops up the clothes containing water, but this reaction force is transmitted to the water tank 2 and the water tank 2 vibrates back and forth. By entering the clothes and water, the center of gravity of the water tank 2, drum 3 and motor 5 is lowered, and enters between the front side 17A, 17B and the rear side 17C, 17D of the suspension receiver 17, where the center of gravity is By supporting the water tank 2 by sandwiching it, the longitudinal vibration of the water tank 2 can be reduced.

  Further, in this way, the suspension receivers 17C and 17D on the rear side of the water tank 2 are raised, and the corner plates 16C and 16D on the rear side of the casing 1 are raised by the difference in height, so that all four are the same. A suspension rod type suspension 15 having a length can be used. This makes it possible to share parts, which is desirable because it leads to cost reduction.

  Furthermore, in the drum type washing machine of the present embodiment, the damper 24 is disposed below the trunk portion 2b of the water tank 2 in order to suppress vibration in the front-rear direction during washing. The damper 24 is disposed near the center of gravity at the approximate center in the left-right direction of the water tank 2, and is attached to the water tank 2 and the lower part of the housing 1 via rubber bushes 25 and 26. The damper 24 is attached to the water tank 2 with an inclination of 45 ° or less from the horizontal, and is disposed so as to mainly act in the front-rear direction.

  The damping force of the damper 24 may use friction, hydraulic pressure, air pressure, or the like, but is smaller than the total damping force of the suspension rod type suspension 15. Since it is supported by a spring in the vertical direction, vibration must be reduced by applying a large damping force, but since a restoring force is generated by the pendulum in the front-rear direction, such a large damping force is necessary. There is no. If a relatively wide space is secured in the housing 1 and the water tank 2, the damper 24 that suppresses vibration in the front-rear direction may be omitted.

[Example 2]
Next, a second embodiment of the present invention will be described with reference to FIG. Here, differences from the first embodiment will be mainly described.
In the drum type washing machine according to the second embodiment, a water tank 2 elastically supported by four suspension rod type suspensions 15 from the upper four corners of the case 1 is provided in the case 1. The water tank convex part 31 is provided in the lower side of the center line of the trunk | drum 2b near both the left and right end surfaces 2a. The lower surface of the water tank convex portion 31 is substantially horizontal, and has an attachment portion for fixing the stay 30 to the lower surface.

The stay 30 is made of metal, has substantially the same length as the width of the water tank 2 in the left-right direction, and is attached to the lower surface of the water tank protrusion 31 so as to connect the left and right water tank protrusions 31. Suspension receivers 17 having hemispherical depressions 17a are fixed to the left and right ends of the stay 30. The suspension receiver 17 is fixed to the stay 30 at a position such that at least a part of the recessed portion 17 a is inside the both end surfaces 2 a of the water tank 2.
Since the suspension receiver 17 is fixed to the water tank 2 via the stay 30 in this way, the strength of the water tank 2 itself is not affected, and the water tank 2 can ensure a stable strength.

[Example 3]
Next, a third embodiment of the present invention will be described with reference to FIGS. Here again, the differences from the first embodiment will be described mainly.
In the drum type washing machine of the third embodiment, the water tank 2 includes two suspension rod type suspensions 15C and 15D from the upper rear part of the casing 1, and one cylinder suspension 27 from the lower front part of the casing 1. And two springs 28 that pull in the forward direction from the front upper part of the housing 1.

  The suspension rod type suspensions 15 </ b> C and 15 </ b> D are suspended from corner plates 16 </ b> C and 16 </ b> D fixed to the left and right corners of the upper rear portion of the housing 1. The sliding cylinder 15d at the bottom of the suspension rod type suspension 15 is a hemispherical depression of the suspension receiver 17 formed in the direction of both end surfaces from the water tank convex part 18 provided on the lower side of the body part 2b of the water tank 2. It is fitted to 17a and supports the rear of the water tank 2.

  The cylinder suspension 27 includes a cylinder 27a, a rod 27b, and a spring 27c sandwiched between an upper portion of the cylinder 27a and an upper portion of the rod 27b. The spring 27c is larger than the spring constant of the spring 15c of the suspension rod type suspension 15, and is about twice as large. Although not shown, oil is stored in the cylinder 27a, and an orifice that moves back and forth in the oil is attached to the lower end of the rod 27b. Thereby, the cylinder suspension 27 gives a damping force together with the spring force as the cylinder 27a and the rod 27b expand and contract. The cylindrical suspension 27 is attached to the front bottom portion of the housing 1 through a rubber bush 26 so as to incline slightly rearward from the vertical, and the upper end of the cylindrical suspension 27 passes through the rubber bush 25 and has a center of gravity of the trunk portion 2b of the water tank 2. It arrange | positions so that the vicinity, ie, the approximate center part of the left-right direction may be supported.

  The two suspension rod suspensions 15C and 15D and one cylinder suspension 27 substantially support the combined weight of the water tank 2, drum 3 and motor 5, but the suspension rod suspensions 15C and 15D and one suspension The cylinder suspension 27 is attached from the front lower part to the rear upper part, and a force is generated from the front to the rear in addition to the upward direction. A spring 28 that pulls substantially horizontally from the front portion of the housing 1 so as to balance this force is attached to both end faces 2a of the water tank 2 so as to be pulled to the front side. As the tension spring 28, one having a smaller spring constant than the spring 15c of the suspension rod type suspension 15 is used.

  If two suspension rod type suspensions 15 are used in this way, the water tank 2 can be supported by one without using a plurality of cylinder suspensions 27, and the vibration of the casing 1 can be more vibrated than a conventional one using a plurality of suspensions. Can be reduced. Further, since the cylinder type suspension 27 is provided in the front, the front corner plates 16A and 16B in the first embodiment and the suspension type suspensions 15A and 15B in the gap between the water tank 2 and the housing 1 are necessary. Since it disappears, the clearance gap between the water tank 2 and the housing | casing 1 can be narrowed, and the housing | casing 1 can be made compact by that much.

  Further, in the third embodiment, the front and rear are reversed, that is, the front part of the water tank 2 is supported by the suspension rod type suspension 15 and the rear part of the water tank 2 is supported by the cylinder type suspension 27. It is good also as a structure pulled and supported to the rear side of the water tank 2 by the spring 28.

[Example 4]
Next, a fourth embodiment of the present invention will be described with reference to FIG. Here, differences from the third embodiment described above will be mainly described.
In the drum type washing machine of the third embodiment, the water tank 2 is composed of two suspension rod type suspensions 15 from the upper rear part of the casing 1 and one cylinder type suspension 27 from the lower front part of the casing 1. It is supported.

The suspension rod type suspension 15 is suspended from corner plates 16 fixed to the left and right corners of the rear upper part of the housing 1. The sliding cylinder 15d at the bottom of the suspension rod type suspension 15 has a hemispherical depression 17a of the suspension receiver 17 formed in the direction of both end surfaces from the water tank convex part 18 provided on the lower side of the body part 2b of the water tank 2. The rear of the water tank 2 is supported.
The cylinder-type suspension 27 is attached to the front bottom portion of the housing 1 through the bush 26 so as to be inclined slightly forward from the vertical, and the upper end thereof is near the center of gravity of the trunk portion 2b of the water tank 2 via the rubber bush 25 That is, it is arranged so as to support the substantially central portion in the left-right direction.

  When the water tank 2 is supported in this manner, the suspension rod type suspension 15 is pulled upward and the cylinder type suspension 27 is pushed forward in the upper part, so that the force acting on the water tank 2 is balanced. For this reason, the spring 28 used to pull the water tank 2 forward is not necessary, and the gap between the water tank 2 and the housing 1 can be narrowed, and the housing 1 can be made compact accordingly. Can do.

  In the fourth embodiment, the front and rear are reversed, that is, the front part of the water tank 2 is supported by the suspension rod type suspension 15 and the rear part of the water tank 2 is supported by the cylinder type suspension 27.

[Example 5]
Next, a fifth embodiment of the present invention will be described with reference to FIG. The washing machine shown here is a so-called front loading type drum washing machine.
The casing 1 of this drum type washing machine has a front cover 29 on the front and a top cover 23 on the upper part. The front cover 29 has a laundry inlet, and a door 51 is provided there. The door 51 is opened and closed. By putting in and out clothing. Inside the housing 1, there is disposed a cylindrical water tank 2 which is inclined with the inlet side facing up and opened on the inlet side. The inlet and the opening of the water tank 2 are connected by a bellows-like rubber bellows 52 so that the clothes do not fall into the housing 1 when the clothes are put in and out.

  Although not shown in the figure, a cylindrical drum having a large number of holes and open at one end is rotatably provided inside the water tank 2. A motor 5 that rotationally drives the drum is fixed to the rear bottom surface of the water tank 2, and a rotating shaft that is fixed at the center of the rear end surface of the drum is connected to the rotor of the motor 5. Thus, the drum can be rotated in the water tank 2 both left and right by the motor 5 provided in the rear part of the water tank 2, and washing, rinsing and dewatering of the clothes are performed by the rotation of the drum.

Further, a water supply port 9, a detergent box 10, and an electromagnetic valve 11 are provided on the upper rear side of the top cover 23 to constitute a water supply unit. Water is supplied to the water tank 2 by opening the electromagnetic valve 11 of this water supply unit.
Moreover, the drainage hose 13 extended outside the solenoid valve 12 and the housing | casing 1 is provided in the lower part of the water tank 2, and comprises the drainage unit. By opening the electromagnetic valve 12 of this drainage unit, the water stored in the water tank 2 is drained outside the drum type washing machine.

  The housing 1 has a surface inclined at the upper part of the front surface, and corner plates 16 are fixed to the left and right corners at the height position where the inclined surface of the housing 1 starts and the left and right corners at the upper rear. Four suspension rod type suspensions 15 are suspended from 16 so as to be swingable. Thus, by making the height of the corner plate 16 different between the front and rear, the opening area of the upper portion of the housing 1 can be widened, and the water tank 2 can be easily put into the housing 1 during assembly. .

  The body portion 2b of the water tank 2 is provided with water tank convex portions 18 at two places on the left and right in the lower front part and two places on the left and right in the upper rear part. A suspension receiver 17 having a hemispherical depression 17a projecting from the water tank convex portion 18 in the direction of both end faces 2a of the water tank 2 is provided, and a sliding cylinder 15d below the suspension rod suspension 15 is fitted thereto. The water tank 2 is elastically supported.

  By supporting the water tank 3 in this manner, the suspension rod type suspension 15 is disposed so as to cross the vicinity of the circumferential portion of the both end faces 2 a of the water tank 2 and can be brought close to the water tank 2. Moreover, since a part of suspension receiver 17 exists inside the both end surfaces 2a of the water tank 2, it does not travel much larger than the both end surfaces 2a. Therefore, the clearance gap between the water tank 2 and the housing | casing 1 can be narrowed, and the housing | casing 1 can be made compact by that much.

  The present invention is not limited to the drum type washing machine described in the above embodiment, and can also be applied to a drum type washing machine having a drying unit added to the drum type washing machine.

1 is a front view showing a first embodiment of a drum type washing machine according to the present invention. FIG. FIG. It is sectional drawing inside a water tank same as the above. It is a perspective view which shows a housing | casing upper part similarly. It is a block diagram of a suspension. It is a perspective view which shows the end surface of the water tank provided with the rib. It is a perspective view which shows the end surface of the water tank which attached the flange. It is a perspective view which shows the end surface of the water tank which attached the counterweight. It is a front view which shows the 2nd Example of the drum type washing machine by this invention. It is a front view which shows the 3rd Example of the drum type washing machine by this invention. FIG. It is a side view which shows the 4th Example of the drum type washing machine by this invention. It is a side view which shows the 5th Example of the drum type washing machine by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Housing, 2 ... Water tank, 2a ... End face of water tank, 2b ... Body part of water tank, 3 ... Drum, 15 ... Suspension rod type suspension, 16 ... Corner plate (support part which receives the upper part of suspension type suspension) , 17 ... Suspension receiver (support part for receiving the lower part of a suspension rod type suspension), 18 ... Water tank convex part, 27 ... Cylinder type suspension

Claims (9)

In a drum-type washing machine having a structure in which a water tank provided with a washing drum is supported by a suspension rod-type suspension having a compression spring from the upper part of the housing,
The suspension rod type suspension is disposed between the upper portion of the casing and the lower side of the body of the water tank so as to incline so as to cross the vicinity of the circumferential portions of both end faces of the water tank. A drum-type washing machine.   At least a part of the support portion for receiving the upper part of the suspension rod type suspension provided on the upper part of the housing is positioned outside both end surfaces of the water tank, and the suspension rod type suspension provided on the water tank. The drum-type laundry according to claim 1, wherein at least a part of the support portion for receiving the lower portion is located inside the outermost surface of the body portion of the water tub and inside the both end surfaces of the water tub. Machine.   The at least part of the support part which receives the upper part of the said suspension rod type suspension provided in the upper part of the said housing | casing is located inside the outermost surface of the trunk | drum of the said water tank, The Claim 1 or 2 characterized by the above-mentioned. The drum type washing machine as described.   The support part that receives the lower part of the suspension of the suspension rod type provided in the water tank is provided with a convex part outward from the body part of the water tank, and is provided so as to protrude from the convex part toward both end surfaces of the water tank. The drum type washing machine according to any one of claims 1 to 3.   A support portion for receiving a suspension rod type suspension that supports the front portion of the water tank provided at the upper part of the housing is positioned below the uppermost portion of the water tank and above the central axis of the water tank. The drum type washing machine according to any one of claims 1 to 4.   The support part that receives the suspension rod type suspension that supports the rear part of the water tank provided at the upper part of the housing is the same height as the support part that receives the suspension rod type suspension that supports the front part of the water tank. The drum type washing machine according to any one of claims 1 to 5, wherein the drum type washing machine is located at or above the position.   A support part for receiving the lower part of the suspension rod type suspension provided at the front part of the water tank and a support part for receiving the lower part of the suspension rod type suspension provided at the rear part of the water tank are provided at different height positions. The drum type washing machine according to any one of claims 1 to 6, wherein the drum type washing machine is provided.   The bent portion that is bent inward at the upper part of the casing is bent at a position higher than both end faces of the water tank and attached parts attached to both end faces. The drum-type washing machine according to Item. The front or rear part of the water tank is supported by a plurality of suspension rod type suspensions from the upper part of the casing, and the rear or front part of the water tank is supported by a suspension disposed above the lower part of the casing. The drum type washing machine according to any one of claims 1 to 4, wherein:

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