JPH01299596A - Drum type drier - Google Patents

Abstract

PURPOSE:To reduce the axial dimension of a bearing device and increase the effective capacity of a drum by fixing a shaft member and a bearing member so as to be opposite to each other on either of the end plate portion of the drum and the side plate portion of an outer box respectively and housing a projecting shaft portion in a bearing recessed portion. CONSTITUTION:A shaft member 27 has a circular projecting shaft portion 27a in the center and flange portions 27b on its periphery. A bearing member 28 is made of, e.g., plastics and cylindrical peripheral walls 28b are integrally projected in the center of its base plate portion 28a with the inside thereof being formed into a bearing recessed portion 28c for rotatably housing the projecting shaft portion 27a of the shaft member 27. The shaft member 27, being manufactured by the press working of a metal plate, can have the flange portion 27b on the periphery of the projecting portion 27a in a body enabling this portion to be fixed to an outer box 11 with a screw 30. Hence, the fixed axial dimension can be satisfactorily short being nearly equal to the projecting dimension of the projecting shaft portion 27a. As a result, the axial dimension lof a bearing device 17 as a whole can be reduced ensuring the larger inside capacity of a drum 16 for that amount.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a drum dryer with an improved drum bearing device.

(Prior art) For example, in a floor-standing type drum dryer that has a clothes entrance/exit formed on the upper surface of the outer box, a support for the drum rotatably installed inside the outer box (the first structure is as follows) is used. First, a large-diameter circular opening was formed at one end of the drum, and the inner periphery of this circular opening was connected to the outer periphery of a circular casing with a built-in fan installed inside the outer box. The drum is fitted to rotatably support the drum.Meanwhile, the other end plate of the drum is provided with a bearing device as shown in Fig. 4.In the figure, 1 is the end plate of the drum; Four support shaft storage parts 1a are formed in the center and bulge inward of the drum, and a drum support shaft 2 is fixed here.The drum support shaft 2 has a smooth end circumferential surface and a threaded portion at the base. is formed, and is fastened to the center of the end plate part 1 with a nut 5 via a reinforcing plate 3 and a spring washer 4 which are applied to both the front and back sides of the end plate part 1. A bearing accommodating recess 6a that bulges toward the drum side is formed in the side plate 6, and a bearing 7 through which the drum support shaft 2 is inserted is fixed in the bearing accommodating recess 6a. 8 to prevent the design from being impaired.

(Problem to be Solved by the Invention) However, in the above configuration, it is necessary to fix the drum support shaft 2 to the drum via the spring washer 4 and the nut 5. The threaded portion of the drum must be formed with a certain axial dimension, and as a result, the axial dimension of the drum support shaft and the entire bearing device becomes longer, and the center of the drum protrudes into the drum. There is a drawback that it becomes This not only reduces the effective volume of the drum, but also causes the so-called cloth wrapping of the clothes to be dried to become poor or tangles to occur, resulting in a decrease in drying performance.

Furthermore, the head, threaded portion, and smooth portion of the drum support shaft 2 must generally be formed by cutting, which poses the problem of high manufacturing costs.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to shorten the axial dimension of a bearing device, thereby ensuring a large effective volume of the drum.
To provide a drum type dryer which can also reduce manufacturing costs.

[Structure of the Invention] (Means for Solving the Problems) The dryer of the present invention includes a shaft member formed by pressing a metal plate to have a protruding shaft portion, and a shaft member rotatably housed in the protruding shaft portion. and a bearing member having a bearing recess to obtain a bearing, and the shaft member and the bearing member are fixed to one and the other of the end plate part of the drum and the side plate part of the outer box so as to face each other, and the protruding shaft part It is characterized in that the drum is rotatably supported by being housed in the bearing recess.

(Function) Since the shaft member of the bearing device is manufactured to have a protruding shaft part by pressing a metal plate, it is possible to fix the flange part around the protruding shaft part to the end plate of the drum, etc. As a result, the axial dimension becomes shorter. Moreover, since the shaft member is manufactured by press working, the processing cost can be lowered compared to the conventional cutting work of the drum support shaft.

(Example) Hereinafter, a first example in which the present invention is applied to a floor-standing clothes dryer will be described with reference to FIGS. 1 and 2.

The overall structure of the dryer is shown in Figure 2, where 11
12 is an outer box, and 12 is an upper cover provided at the top opening of the outer box 11. The upper cover 12 is formed with a rectangular clothing opening 13 for putting in and taking out clothes to be dried. Lid 14 for opening and closing clothing entrance 13
is rotatably attached via a hinge 15.

Reference numeral 16 denotes a drum for storing clothes, and the center of the end plate portion 16a located on the right side in the figure is rotatably supported by the right side plate portion 11a of the outer box 11 by a bearing device 17, which will be described in detail later. A large diameter opening formed on the left side is rotatably supported by a casing 18 fixed within the outer box 11 via a bearing 19. A rectangular hole 20 of the same size as the clothing entrance/exit 13 of the upper cover 12 is formed in the cylindrical body of the drum 16, and the rectangular hole 20 is formed into the clothing entrance/exit by rotating the drum 16 by hand, for example. 13, the clothes are transferred to the drum 1 through the clothes entrance 13.
It is designed to be able to be taken in and taken out within 6. Furthermore, drum 16
A drum lid 20a for opening and closing the rectangular hole 20 is provided on the cylindrical body portion of the drum so as to be slidable in the circumferential direction.

Further, a fan 21 having a double wing shape is disposed inside the casing 18 so as to partition the inside of the casing 18 into left and right sides, and when this fan 21 is rotated, the air inside the drum 16 is transferred to a filter 22. The air is sucked into the right side of the fan 21 through the air, heated by the heater 23, and returned to the drum 16 again. At the same time, outside air is sucked in from an intake port (not shown) formed in the outer box 11 and drawn into the left side of the fan 21, and exchanges heat with the warm air flowing through the right side of the fan 21 as described above. After that,
It is discharged to the outside of the outer box 11 from an exhaust port (not shown). The hot air from inside the drum 16 is dehumidified by such heat exchange, and the water generated by the dehumidification is discharged to the outside of the machine through a drainage hole (not shown) provided at the bottom of the casing 18. It has become. Incidentally, 24 is a motor for rotationally driving the drum 16 and fan 21 via belts 25 and 26, respectively.

Now, the bearing device 17 will be explained in detail with reference to FIG. 1. It consists of a shaft member 27 and a bearing member 28. Among these, the shaft member 27 is manufactured by press working a metal plate, and has a circular protruding shaft portion 27a at the center and a flange portion 27b around it. This is done by passing the protruding shaft portion 27a inward through the insertion hole 29 formed in the side plate portion 11a of the outer case 11, and then attaching the flange portion 27b to the side plate portion 1.1a of the outer case 11 with the screw 30. Fixed. On the other hand, the bearing member 28 is made of plastic, for example, and has a cylindrical peripheral wall 28b integrally protruding from the center of the base plate 28H, the inside of which is designed to rotatably accommodate the protruding shaft portion 27a of the shaft member 27. This is a bearing recess 28c.

In this bearing member 28, the cylindrical peripheral wall 28b is passed through the insertion hole 31 formed in the end plate 16a of the drum 16 outward, and the base plate 28a is attached to the drum 1 by screws 32.
6 is fixed to the end plate portion 16a, and in this state, the bearing recess 28
The protruding shaft portion 27a of the shaft member 27 is rotatably housed in c. Reference numeral 33 denotes a reinforcing plate directed to the outside of the end plate portion 16a of the drum 16, on which a nut portion 33a into which the screw 32 is screwed is formed by burring.

Next, the operation of the above configuration will be described. When the motor 24 and the heater 23 are energized, the drum 16 and the fan 21 are rotated as the motor 24 rotates, and the clothes to be dried in the drum 16 are agitated, and warm air is blown into the drum 1.
6, the clothes are dried. Here, drum 16
The rotation is supported by the casing 18 via a bearing 19 on the left side and by a bearing device 17 on the right side.
Supported by

Now, in this bearing device 17, when compared with the conventional example shown in FIG. 4, the shaft member 27 functionally corresponds to the conventional drum support shaft 2. However, since the conventional drum support shaft 2 has a series of threaded parts for fixing it to the drum,
Although there is a limit to shortening the axial dimension, since the shaft member 27 of this embodiment is manufactured by press working of a metal plate, there is a flange portion 2 around the protruding shaft portion 27a.
7b integrally, this part can be fixed to the outer box 11 with the screws 30, and therefore, the axial dimension in the fixed form is sufficient to be the protruding dimension of the protruding shaft part 27a and the gap etc. Can be shortened. As a result, the axial dimension of the bearing device 17 as a whole can be made shorter than the conventional dimension L (see FIG. 4), and the bulge into the drum 16 is reduced accordingly. This means that if the drum 16 has the same thickness, its inner volume can be secured larger than before, which improves the so-called fabric surroundings of clothing, prevents the fabric from getting tangled, and improves drying efficiency. means.

Note that even in the conventional bearing device shown in FIG. 4, the end plate 1 of the drum does not bulge inward, but the side plate 6 of the outer box bulges outward, and the drum is supported inside. It is possible to create a structure in which the shaft 2 is accommodated. However, if this is done, localized protrusions will be produced on the outer surface of the outer box, resulting in a significantly poor appearance and deterioration of marketability. In this regard, according to this embodiment, a large internal volume of the drum 16 can be ensured without impairing the appearance as in the conventional case. Moreover, since the shaft member 27 is manufactured by press working, it can be manufactured at a lower cost than the conventional drum support shaft 2 which requires cutting work, and it is also possible to reduce the manufacturing cost. can.

Note that the present invention is not limited to the first embodiment described above, and for example, as in the second embodiment shown in FIG. 3, the positional relationship between the shaft member 27 and the bearing member 28 is different from that in the first embodiment. Even if it is reversed, the intended purpose can be achieved. That is, in this second embodiment, the bearing member 28 is screwed to the side plate portion 11a of the outer box 11 so that the outer surface is flush with the drum 1.
The shaft member 27 is screwed to the end plate portion 16a of the drum 16 through the reinforcing plate 33, and the protruding shaft portion 27a of the shaft member 27 is accommodated in the bearing recess 28c of the bearing member 28, and the drum 16
is supported.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, and is not limited to dryers of the type in which a clothes entrance is formed on the top surface of the outer box. It can also be applied to drum type dryers. In this case, the large-diameter opening formed on the front surface of the drum is rotatably supported on the outer periphery of the clothing entrance of the outer box, and the rear end plate of the drum is rotatably supported by the bearing device of the present invention. Just do it.

[Effects of the Invention] As described above, the present invention provides a bearing having a shaft member formed by pressing a metal plate to have a protruding shaft portion, and a bearing recess in which the protruding shaft portion can be rotatably accommodated. It is characterized by the fact that the bearing device of the drum is constructed from the members, and as a result, the axial dimension of the bearing device can be shortened, the effective volume of the drum can be increased accordingly, and the drying efficiency can be improved. Therefore, it is possible to provide a drum-type dryer that can reduce the manufacturing cost at the same time.

[Brief explanation of the drawing]

1 and 2 show a first embodiment of the present invention, FIG. 1 is an enlarged longitudinal sectional view of the main parts, FIG. 2 is a longitudinal sectional view of the entire drum dryer, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a view corresponding to FIG. 1 showing a second embodiment of the present invention, and FIG. 4 is a view corresponding to FIG. 1 showing a bearing device in a conventional drum dryer. 27a is a shaft member, 27a is a protruding shaft portion, 28 is a bearing member, and 28C is a bearing recess. Applicant: Toshiba Corporation

Claims (1)

[Claims] 1. A drum for storing objects to be dried is rotatably provided in an outer box via a bearing device, in which the bearing device is
Consisting of a shaft member formed by pressing a metal plate to have a protruding shaft portion, and a bearing member having a bearing recess that can rotatably accommodate the protruding shaft portion, the shaft member and the bearing member are , the drum is rotatably supported by fixing it to one and the other of the end plate part of the drum and the side plate part of the outer box so as to face each other, and storing the protruding shaft part in the bearing recess. A drum dryer characterized by: