JP4081850B2 - Drum washing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drum-type washing machine for washing, rinsing, and dewatering laundry in a rotating drum that is rotatably arranged around a substantially horizontal rotation axis.
[0002]
[Prior art]
Conventionally, this type of drum-type washing machine is configured as shown in FIGS. Hereinafter, the configuration will be described.
[0003]
As shown in FIG. 11, the rotating drum 1 is provided with a large number of water passage holes 2 on the entire outer periphery thereof, and is rotatably disposed in the outer tub 3. One end of the rotary shaft 4 is fixed in a substantially horizontal direction at the rotation center of the rotary drum 1, and a drum pulley 5 is fixed to the other end of the rotary shaft 4. The motor 6 is fixed to the outer tub 3 and connected to the drum pulley 5 by the belt 7 to drive the rotary drum 1 to rotate.
[0004]
The outer tub 3 is suspended from the body 8 so as to be swingable by a spring body 9, and the vibration-proof damper 10 reduces vibration at the time of dehydration activation, so that vibration at the time of steady dehydration is not easily transmitted to the body 8. In addition, a balancer 11 that reduces vibration during dehydration is provided. The substantially cylindrical packing member 12 connects between the opening of the outer tub 3 corresponding to the front opening of the rotating drum 1 and the front opening of the window mounting plate 13 coupled to the body 8. A window 14 is provided at the front opening of the window mounting plate 13 so as to be opened and closed.
[0005]
As shown in FIG. 12, the body 8 includes a left and right side plate 15, an upper left and right reinforcing plate 16, a lower front and rear reinforcing plate 17, a lower left and right reinforcing plate 18, and an upper rear reinforcing plate 19, and is spot-welded (marked with X). ) And then the surface is painted. The upper front reinforcing plate 20 is detachably locked with a screw or the like so that the outer tub 3 can be attached and detached.
[0006]
The bottom plate 21 is fixed by screws or the like so as to cover the lower part of the lower front and rear reinforcing plates 17 and the lower left and right reinforcing plates 18. The fastener 22 is fixed to the lower left and right reinforcing plates 18 by spot welding (x mark) and holds the lower end of the vibration damper 10. The leg mounting portion 23 is joined to both ends of the lower front / rear reinforcing plate 17 or the lower left / right reinforcing plate 18 by spot welding (x mark) to fix the leg 24.
[0007]
A control device (not shown) controls operations of the motor 6, a water supply valve (not shown) and the like, and sequentially controls a series of processes such as washing, rinsing and dehydration.
[0008]
The operation in the above configuration will be described. When the window 14 is opened, the laundry is put into the rotating drum 1 and the operation is started, water flows into the outer tub 3 through a water supply valve connected to a water tap.
[0009]
In the washing process, the rotary drum 1 is rotationally driven by the motor 6 at a low speed (about 53 rpm), and the laundry in the rotary drum 1 is lifted and dropped onto the water surface. Thus, the washing process proceeds. In the rinsing process, the same operation as in the washing process is performed.
[0010]
In the dehydration process, the rotary drum 1 is driven to rotate at a high speed (about 1000 rpm) by the motor 6, and the laundry is dehydrated by centrifugation. At this time, if the laundry in the rotating drum 1 is shifted, that is, if an imbalance occurs, the rotating bodies such as the rotating drum 1 and the outer tub 3 vibrate (oscillate). The vibration of the oscillating body is attenuated, and the vibration transmission to the body 8 can be minimized as much as possible by the vibration proofing mechanism of the vibration proof damper 10 during steady dehydration.
[0011]
Further, the opening of the outer tub 3 and the front opening of the body 8 are connected by a substantially cylindrical packing member 12, but the substantially cylindrical packing member 12 is bent by the swinging of the swinging body. The vibration is not transmitted to the window mounting plate 13 coupled to the body 8 through the substantially cylindrical packing member 12.
[0012]
[Problems to be solved by the invention]
In such a conventional configuration, when the laundry in the rotating drum 1 is shifted, that is, unbalanced, the swinging bodies such as the rotating drum 1 and the outer tub 3 vibrate (sway) during dehydration start-up and steady rotation. The vibration isolation damper 10 attenuates the vibration of the oscillating body, but the vibration is transmitted to the body 8. The body 8 is joined by spot welding to the left and right side plates 15, the upper left and right reinforcing plates 16, the lower front and rear reinforcing plates 17, the lower left and right reinforcing plates 18, and the upper rear reinforcing plate 19. The lower left and right reinforcing plates 18 are fixed to each other by spot welding, the lower left and right reinforcing plates 18 are joined to the lower left and right reinforcing plates 18 by spot welding, and the legs 24 are fixed. In each spot welded portion (x mark) of the lower front and rear reinforcing plate 17 or the lower left and right reinforcing plate 18 where the leg mounting portion 23 is joined by spot welding, stress due to vibration is concentrated. Therefore, there is a problem that the number of spot welding points increases and the cost increases.
[0013]
Also, spot welding is an established technology at present, but since it is a destructive inspection to confirm whether or not it is reliably welded, it is difficult to conduct a complete inspection, and there is inevitably room for safety. The cost was inevitably inevitable with the number of RBIs I had.
[0014]
In addition, since the spot welded portion (× mark) melts the rust-proofing film on the surface, the rust-preventing effect is completely lost, and when used for an external portion such as a part that normally requires corrosion resistance or body 8, Since the coating process is performed, the cost of degreasing, painting, and baking processes is considerably increased, which increases the cost.
[0015]
In the unlikely event that water leaks from the outer tub 3 in the body 8 or other parts, the water dropped on the bottom plate 21 accumulates on the bottom plate 21, but the bottom plate 21 is a lower front and rear reinforcing plate. 17 and the lower left and right reinforcing plates 18 are fixed by screws or the like so that there is a gap between the lower front and rear reinforcing plates 17 and the lower left and right reinforcing plates 18, and water is removed from the machine through this gap. It will flow out in all directions. When only the front is opened and set in a place surrounded by three sides, when this water flows out of the area other than the front, the discovery of water leakage will be delayed, and the floor will become unsanitary. In apartments such as apartments, there was a risk of causing damage to the downstairs.
[0016]
The present invention solves the above-described conventional problems, eliminates the cost increase factors such as the number of points of each part constituting the body, the number of hit points related to spot welding which is a joining method, and the coating process, and is inexpensive and reliable in terms of strength. The purpose is to obtain a high quality product.
[0017]
[Means for Solving the Problems]
In order to achieve the above object, the present invention encloses a rotating drum having a rotating shaft in a substantially horizontal direction by an outer tub, covers the outer tub with a body, rotates the rotating drum by a motor fixed to the outer tub, and The tank is suspended from the body by a spring body so as to be swingable, and the lower part is configured to be swingably supported by a vibration-proof damper. The body is provided with an outer side plate made of a coated steel plate and a rust-proof treatment. A reinforcing plate for reinforcing the outer side plate, and the outer side plate and the reinforcing plate are joined as a member to be swaged by caulking with a rust-treated rivet, after caulking, the tip portion of the leg portion is expanded, it is obtained by a configuration in which the leg portion is covered with the caulking member of the leg portion.
[0018]
As a result, it is possible to eliminate the cost increase factors such as the number of points constituting each body, the number of hit points related to spot welding, which is the joining method, and the coating process, and to obtain an inexpensive and highly reliable material. Can do.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention includes a rotating drum having a rotating shaft in a substantially horizontal direction, an outer tank enclosing the rotating drum, a motor fixed to the outer tank and rotating the rotating drum, A body that covers the outer tub, a spring body that swingably suspends the outer tub from the body, and an anti-vibration damper that swingably holds a lower portion of the outer tub. An outer side plate and a reinforcing plate that is rust-proofed and reinforces the outer side plate, and the outer side plate and the reinforcing plate are caulked with rust-treated rivets as members to be crimped After being crimped, the rivet has a structure in which the tip end portion of the leg portion is widened and the leg portion is covered with the member to be fastened on the leg side. Because the left and right side plates of the body are made of painted steel, Since the joining of the plate and the other reinforcing plate is rivet caulking, the body spot welding process, degreasing, painting, and baking processes can be abolished. Since the to-be-clamped member on the leg side covers the leg portion of the rivet, the rust prevention treatment is not required, the cost can be greatly reduced, and the swaged portion can be waterproofed.
[0020]
The invention according to claim 2 is the invention according to claim 1, wherein the reinforcing plate is an upper left and right reinforcing plate that suspends the spring body, and an upper left and right reinforcing plate that suspends the outer side plate and the spring body. In this case, since the member to be crimped on the leg side of the rivet covers the leg portion of the rivet, the rust prevention treatment is not required, the cost can be significantly reduced, and the crimped portion can be waterproofed.
[0021]
【Example】
Embodiments of the present invention will be described below with reference to the drawings. In addition, the thing of the same structure as a prior art example attaches | subjects the same code | symbol, and abbreviate | omits description.
[0022]
Example 1
As shown in FIG. 2, the body 31 suspends the outer tub 3 so as to be swingable by the spring body 9, supports the vibration isolation by the vibration isolation damper 10, reduces vibration at the time of dehydration start, and vibrations at the time of steady dehydration. Is difficult to be transmitted to the body 8.
[0023]
As shown in FIG. 1, the body 31 includes left and right side plates 32 which are outer side plates made of a coated steel plate, upper left and right reinforcing plates 33 subjected to rust prevention treatment such as zinc plating, and rust prevention such as zinc plating. An upper rear reinforcing plate 34 that has been treated, and a bottom plate 37 that is integrally formed with a lower front and rear reinforcing portion 35 and a lower left and right reinforcing portion 36 and that has been similarly subjected to rust prevention treatment such as zinc plating. Is caulked by a rivet 38 that has been subjected to rust prevention treatment (illustrated by a circle and a part of the symbol is entered). The upper front reinforcing plate 20 is detachably locked to the left and right side plates 32 with screws or the like so that the outer tub 3 can be attached and detached.
[0024]
As shown in FIG. 3, the bottom plate 37 is provided with a first groove 39 that is connected to the entire circumference at a substantially central position, and at least at one position on the front side of the first groove 39 from the bottom surface of the first groove 39 to the front. A second groove portion 41 having an inclined surface 40 that descends is provided, and a through hole 42 is provided near the front of the bottom surface of the second groove portion 41. Other configurations are the same as those of the conventional example.
[0025]
The operation of the above configuration will be described. The operations of washing, rinsing, and dehydration processes are the same as those in the conventional example, and thus description thereof is omitted.
[0026]
While the laundry in the rotating drum 1 is shifted, that is, when unbalanced, when dehydration is started or during steady rotation, vibrations of the outer tub 3 and the like are transmitted to the body 31. 35 and the lower left and right reinforcing portions 36 are formed integrally with the bottom plate 37. Therefore, there is no particular spot welded portion constituting the bottom plate portion where stress is particularly concentrated, and the strength can be extremely stable. In addition, the number of parts can be reduced on the processed surface, and the cost such as the abolition of the spot welding process can be reduced and the cost can be reduced.
[0027]
The body 31 has left and right side plates 32 which are outer side plates made of a coated steel plate, upper left and right reinforcing plates 33 which have been subjected to rust prevention treatment such as zinc plating, and rust prevention treatment such as zinc plating. An upper rear reinforcing plate 34, a lower front and rear reinforcing portion 35, and a lower left and right reinforcing portion 36 are integrally formed, and similarly have a bottom plate 37 that has been subjected to a rust prevention treatment such as zinc plating. Since the rivet 38 is subjected to rust prevention treatment, the rust prevention coating is not required, and as a result, the degreasing, painting, and baking processes can be eliminated, and the cost can be greatly reduced. .
[0028]
Even if water leaks from the outer tub 3 or other parts in the body 31, the bottom plate 37 is provided with a first groove 39 connected to the entire circumference at the substantially center, and the first groove 39. A second groove portion 41 having an inclined surface 40 descending forward from the bottom surface of the first groove portion 39 is provided at at least one position on the front side of the first groove portion 39, and a through hole 42 is provided near the front of the bottom surface of the second groove portion 41. Therefore, the water dripped onto the bottom plate 37 can flow out from the front of the machine body, so that early detection of water leakage is possible, the hygiene of the floor surface can be improved, and expansion damage can be prevented.
[0029]
(Example 2)
As shown in FIG. 4, the bottom plate 43 is provided with a first groove portion 44 that is connected to the entire circumference substantially at the center, and forward from the bottom surface of the first groove portion 44 in at least one place on the front side of the first groove portion 44. A second groove portion 46 having a descending inclined surface 45 is provided, and a through hole 47 is provided near the front of the bottom surface of the second groove portion 46. Further, an inclined surface 48 that descends toward the first groove portion 44 and the second groove portion 46 is provided. Other configurations are the same as those of the first embodiment.
[0030]
Explaining the operation in the above configuration, the water dripped onto the bottom plate 43 is quickly transferred to the first groove portion 44 and the second groove portion 46 by the inclined surface 48 descending toward the first groove portion 44 and the second groove portion 46. As a result, it will flow out from the front of the aircraft, allowing early detection of water leaks, improving the hygiene of the floor and preventing damage from expansion.
[0031]
(Example 3)
As shown in FIG. 5, the bottom plate 49 forms an inclined surface 50 that descends toward the front, and a through hole 51 is provided near the front of the inclined surface 50. Other configurations are the same as those of the first embodiment.
[0032]
Explaining the operation in the above configuration, the water dripped onto the bottom plate 49 flows out from the front of the aircraft quickly by the inclined surface 50 descending toward the front, and early detection of water leakage becomes possible earlier. It is possible to improve the performance and prevent the expansion damage.
[0033]
Example 4
The anti-vibration damper 10 shown in FIG. 2 holds the lower portion of the outer tub 3 in a swingable manner, and is a stopper 52 that is screwed to the bottom plate 37 that forms the bottom surface of the body 31 with four bolts having a diameter of 6 mm. Is held in.
[0034]
As shown in FIGS. 6 and 7, the stopper 52 includes a holding portion 53 that holds and holds the vibration damper 10, a mounting portion 54 that is screwed to the body 31, and a first plate provided on the bottom plate 37 of the body 31. A hook portion 56 formed in a substantially U-shape that fits into the first through hole 55 and a claw portion 58 that is inserted into a second through hole 57 provided in the bottom plate 37 of the body 31 are integrally formed. Other configurations are the same as those of the first embodiment.
[0035]
The operation in the above configuration will be described. The stopper 52 that holds and holds the vibration-proof damper 10 is a hook portion 56 formed in a substantially U-shape that fits into the first through hole 55 provided in the bottom plate 37 of the body 31. And the claw portion 58 inserted into the second through hole 57 provided on the bottom plate 37 of the body 31 are integrally formed, so that the temporary fixing at the time of assembling the fastener 52 can be facilitated and the workability is improved. can do.
[0036]
In addition, by screwing the mounting portion 54 to the bottom plate 37 with four bolts with a diameter of 6 mm, it is not necessary to paint for rust prevention. As a result, degreasing, painting, and baking processes can be abolished, resulting in significant cost savings. Is possible.
[0037]
(Example 5)
The body 31 shown in FIG. 1 includes left and right side plates 32 which are outer side plates made of coated steel plates, and upper left and right reinforcing plates 33 which have been subjected to rust prevention treatment such as zinc plating to reinforce the left and right side plates 32, as well as zinc plating and the like. An upper rear reinforcing plate 34 subjected to the rust prevention treatment, and a bottom plate 37 formed integrally with the lower front and rear reinforcement portions 35 and the lower left and right reinforcement portions 36 and similarly subjected to the rust prevention treatment such as zinc plating, Between these, the rivet 38 which gave the antirust process is crimped and joined. Other configurations are the same as those of the first embodiment.
[0038]
Explaining the operation in the above configuration, the crimped shape of the rivet 38 is as shown in FIG. 8, and the left and right side plates 32, which are outer side plates made of a coated steel plate, and the upper left and right sides subjected to rust prevention treatment such as zinc plating. There is no need to prepare a pilot hole for the member to be fastened 59 such as the reinforcing plate 33, the upper rear reinforcing plate 34, and the bottom plate 37, and the member to be fastened 59 on the leg side of the rivet 38 is a leg portion 60 of the rivet 38. Since rust protection is not required, drastic cost reduction is possible, and waterproofing of the crimped portion is possible.
[0039]
Further, since the left and right side plates 32 that are the outer side plates of the body 31 are made of coated steel plates, and the joining of the left and right side plates 32 and the reinforcing plates that reinforce the left and right side plates 32 is a rivet caulking process, spot welding of the body 31 is performed. The process, degreasing, painting, and baking process can be abolished, making it inexpensive and highly reliable.
[0040]
(Example 6)
Leg mounting portions 61 are provided at the four corners of the bottom plate 37 shown in FIG. 2, and these leg mounting portions 61 are screwed nuts 62 as shown in FIG. 9, or screws as shown in FIG. 63 is formed by integrally molding, and the legs 64 are fixed. Other configurations are the same as those in the first to fifth embodiments.
[0041]
The operation in the above configuration will be described. Since the leg mounting portions 61 at the four corners of the bottom plate 37 are formed by screw integral molding or by tightening nuts and the legs 64 are fixed, the spot welding process of the leg mounting portions 61 of the bottom plate 37 Degreasing, painting, and baking processes can be abolished, making it inexpensive and highly reliable.
[0042]
【The invention's effect】
As described above, according to the present invention, a rotating drum having a rotating shaft in a substantially horizontal direction, an outer tank enclosing the rotating drum, a motor fixed to the outer tank and rotating the rotating drum, and the outer tank A body that covers the outer tank so as to be swingable on the body, and an anti-vibration damper that holds the lower part of the outer tank so as to be swingable. A side plate and a reinforcing plate that is rust-proofed and reinforces the outer side plate, and the outer side plate and the reinforcing plate are swaged with rivets that have been rust-proofed as members to be fastened After the crimping process, the rivet has a structure in which the tip end portion of the leg portion is widened and the leg portion is covered with the to- be- clamped member on the leg portion side. Because the side plate is made of painted steel plate, this left and right side plate and other Since the rivet caulking process is used for joining to the strong plate, the body spot welding process, degreasing, painting, and baking processes can be abolished. Since the caulking member covers the leg portion of the rivet, no rust prevention treatment is required, and the cost can be greatly reduced, and the caulking portion can be waterproofed.
[Brief description of the drawings]
FIG. 1 is a perspective view of a body of a drum type washing machine according to a first embodiment of the present invention. FIG. 2 is a sectional view of the drum type washing machine. FIG. 3 is a sectional view of a bottom plate of the drum type washing machine. 4 is a sectional view of a bottom plate of a drum type washing machine according to a second embodiment of the present invention. FIG. 5 is a sectional view of a bottom plate of a drum type washing machine according to a third embodiment of the present invention. FIG. 7 is a cross-sectional view of the fastener of the drum type washing machine according to the fourth embodiment. FIG. 8 is a sectional view of the fastener of the drum type washing machine according to the fifth embodiment of the present invention. Sectional view of rivet caulking section [Fig. 9] Sectional view of leg mounting portion of drum type washing machine of sixth embodiment of the present invention [Fig. 10] Sectional view of another example of leg mounting portion of the drum type washing machine FIG. 11 is a sectional view of a conventional drum type washing machine. FIG. 12 is a perspective view of a body of the drum type washing machine.
DESCRIPTION OF SYMBOLS 1 Rotating drum 3 Outer tank 4 Rotating shaft 6 Motor 20 Upper front reinforcing plate 31 Body 32 Left right side plate 33 Upper left and right reinforcing plate 34 Upper rear reinforcing plate 35 Lower front and rear reinforcing portion 36 Lower left and right reinforcing portion 37 Bottom plate

Claims (2)

A rotating drum having a rotating shaft in a substantially horizontal direction, an outer tank enclosing the rotating drum, a motor that is fixed to the outer tank and rotates the rotating drum, a body that covers the outer tank, and the outer tank A spring body suspended in a swingable manner on the body, and a vibration damping damper that swingably holds a lower portion of the outer tub, wherein the body is provided with an outer side plate made of a coated steel plate and a rust-proof treatment. A reinforcing plate that reinforces the outer side plate, and the outer side plate and the reinforcing plate are joined by caulking with a rivet subjected to rust prevention treatment as a member to be caulked, A drum-type washing machine having a structure in which, after the crimping process, the leg portion is widened and the leg portion is covered with the member to be fastened on the leg side.   The drum type washing machine according to claim 1, wherein the reinforcing plate is an upper left and right reinforcing plate for suspending a spring body.

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