JP3264101B2 - Clothes dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clothes dryer, and more particularly to an improved structure for fixing a silent foam sheet mounted in a drum in order to reduce a drying operation noise.

[0002]

2. Description of the Related Art A conventional method for fixing a silent foam sheet to be mounted in a drum is as follows. It is a general method to manufacture by squeezing. However, the above-described method requires an operation step of applying an adhesive to the silent foam sheet and then attaching the adhesive to the body sheet, a masking step for determining an adhesion position, and a wrinkle generated when the body sheet and the silent foam sheet are rolled. Numerous processes such as removal work are required, and the productivity is poor.In addition, since a silent plastic foam sheet is attached to the iron plate, it can not be separated from each other, and it is suitable for waste home appliances that use resources effectively. Not. As a countermeasure, as shown in, for example, Japanese Utility Model Publication No. 5-27199, a ring-shaped groove is provided in the front plate and the rear plate of the drum, and the front and rear ends of the silent foam sheet are inserted into the grooves without using an adhesive. There is a method of mechanically fixing the drum, but the method of manufacturing a rotating drum by that method is to first round the drum body plate, wind the band so that it does not spread, then combine the drum front plate and the drum body plate by tightening . Next, the silent foam sheet is manually inserted into the ring-shaped groove provided in the front plate of the drum while being rolled. Thereafter, the rear end surface of the silent foam sheet and the groove of the rear plate of the drum are combined together while being aligned, and the drum body plate and the rear plate of the drum are fastened to produce a rotating drum. In the above method, each of the problems described above is configured to be separable, but there is a step of manually inserting a silent foam sheet during the manufacturing process of the rotating drum, so that automatic assembly cannot be performed, and as before It had the problem of reducing productivity.

[0003]

The above prior art does not consider the workability of the method for fixing the silent foam sheet and the drum body plate and the use of waste resources for effective use of resources. There was a problem that could not be used effectively.

[0004] It is an object of the present invention to provide a fixing structure in which the silent foam sheet and the drum body plate are fixed well and can be automatically assembled including the installation of the silent foam sheet.

[0005]

SUMMARY OF THE INVENTION The above-mentioned object is achieved by rotating the outer frame.
Put clothes into the rotatably supported rotating drum,
Clothes dryer which performs drying operation by warm air generated from
The rotary drum has a silent foam sheet on a flat body plate.
Put on it, and in this state, use a plurality of claws
The sound foam sheet is sandwiched at both ends, and the body plate is made to emit the silent sound.
Achieved by rolling and forming the foam sheet inside
It is. Further, the length L of the silent foam sheet is determined by the claws of the body plate.
Can be achieved by making it slightly larger than
You.

[0006]

A plurality of claws are provided near both ends of the drum body plate to prevent circumferential movement of the silent foam sheet when the silent foam sheet is installed and hit both longitudinal end surfaces thereof. The dimension l between the claws and the length L of the silent foam sheet have a relationship of l <L. In addition, the silent foam sheet is made by foaming plastic and has a certain degree of rigidity because the thickness is about 3 mm.

Next, when the drum body plate is rolled into a cylindrical shape with the silent foamed sheet inside, the differential silent foamed sheet having a length L of the silent foamed sheet is compressed from the dimension 1 between the claws, and the repulsive force causes the difference. Spreads outward in the direction of close contact with the body plate.
In addition, the silent foam sheet is usually made by foaming plastic, and therefore thermally shrinks to some extent depending on the temperature during the drying operation.
Is set to be long, the silent foam sheet is always compressed and repelled so as to be in close contact with the drum body plate. Utilizing the force, the silent foam sheet is fixed to the body plate.

Further, since the silent foam sheet has rigidity even in a configuration where it is fixed only at both ends thereof, the silent foam sheet is not easily peeled off from the body plate even if a force for inward deformation is applied to other portions.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to FIGS.
This will be described below. 1 is an outer frame, 2 is a rotating drum, 3 is a silent polypropylene foam sheet fixed in the rotating drum 2, 4 is a heat source, 5 is a two-wing fan, 6 is a fan casing, 7 is a motor as a power, 8 is a motor 7 Is a round belt that transmits the power of the motor 7 to the two-wing fan 5, 10 is a first hermetic felt, 11 is a second hermetic felt, 12 is a partition plate, 13 is a circulation duct for guiding the circulating air discharged from the fan casing 6 to the heat source 4, 14 is a lint filter device, and 15 is an FD for fixing the fan casing 6 to the outer frame 1.
The beam 16 is a mounting ring for mounting a bearing 17, and the rotary drum 2 is rotatably slidably supported by the bearing 17.

That is, the one shown in FIG. 1 is rotatably and slidably supported by a bearing 17 in an outer frame 1 and has a rotary drum 2 having a silent PP foam sheet 3 inside a body plate 18 to obtain hot air. A heat source 4, a belt 8 for driving the rotating drum 2, a round belt 9 for driving the two-wing fan 5, and a motor 7. The rotation of the motor 7 causes the two-wing fan 5 and the rotating drum 2 to rotate. Then, the circulating wind (solid arrow) generated by the rotation is heated when passing through the heat source 4 and enters the rotary drum 2 to evaporate and dry the moisture of the laundry. After that, the circulation duct 13 is driven by the two-wing fan 5.
A circulating wind is sent to the heat source 4 through the inside, and is heated again to repeatedly dry the clothes.

Next, the details of the present invention will be described with reference to FIGS.

Bend deformation portions 19 are formed at both ends of the body plate 18, and the bend deformation portions 19 can be deformed in the circumferential direction. A plurality of claws 20 are provided in the vicinity of the bending deformation portion 19 of the body plate 18 so as to hit both ends of the silent foam sheet 3 and prevent the silent foam sheet 3 from moving in the circumferential direction. A lifter 21 for scraping clothes during the drying operation is attached to the inside of the body plate 18 with screws 22 so as to cover the bending deformation portion 19.

Further, how to make the rotary drum 2 will be described.

A silent PP foam sheet 3 is provided on a flat body plate 18.
And put both ends of the silent foam sheet 3 between the claws 20 in this state. Next, the body plate 18 is rounded with the silent foam sheet 3 inside, and the drum front plate 23 and the drum back plate 24 are wound and narrowed to manufacture the rotary drum 2. At this time, in order to keep the interval 1 between the claws 20 of the body plate 18 and the length L of the silent PP foam sheet 3 in a flat state in a relationship of l <L, the silent foam sheet 3 is compressed by the difference in a rolled state. As a result, the silent PP foam sheet 3 is automatically fixed to the body plate 18 as a force spreading outward.

As described above, the production of the rotating drum is as follows.
The structure is such that a series of processes can be automatically assembled instead of separate processes for each process as in Japanese Utility Model Publication No. 5-27199.

At the last stage, a plurality of lifters 21 are attached to the body plate 18 via the silent foam sheet 3, and the production of the rotary drum 2 is completed.

[0017]

According to the present invention, the silent foam sheet, which has been conventionally formed by bonding, can be attached to the body plate without using an adhesive, and the process is performed by a series of automatic processes. As a result, the assembly time can be reduced, the manufacturing cost can be reduced, and a rotary drum with good productivity can be obtained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention.

FIG. 2 is a view showing attachment of a body plate and a silent PP foam sheet of the present invention.

FIG. 3 is a cross-sectional view showing a rotary drum formed by rolling a body plate of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Outer frame, 2 ... Rotary drum, 3 ... Silent foam sheet, 4 ...
Heat source, 18 ... body plate, 20 ... claws.

Continuation of the front page (72) Inventor Shinji Seya 1-1-1 Higashitagacho, Hitachi City, Ibaraki Prefecture Living Equipment Division, Hitachi, Ltd. (56) References JP-A-6-71095 (JP, A) Kaihei 3-58299 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) D06F 58/02

Claims (2)

(57) [Claims] 1. A rotary drum rotatably supported in an outer frame .
Put clothes in and dry drive with warm air generated from heat source
In the above-mentioned clothes dryer, the rotating drum rides a silent foam sheet on a flat body plate.
In this state, the silent operation is performed with a plurality of claws provided on the body plate.
The both ends of the foam sheet are sandwiched, and the body plate is subjected to the silent foaming.
A clothes dryer characterized in that the sheet is rolled and formed inside . 2. A method according to claim 1, wherein said silent foam sheet is provided.
The length L is slightly larger than the developed length 1 between the claws of the body plate.
A clothes dryer characterized by a sharpness.