JPH0623193A - Drum type clothes dryer - Google Patents

Abstract

(57) [Summary] [Purpose] In a clothes dryer having the function of rotating a drum in a normal direction, the number of parts constituting the tension applying device for applying a tension to the belt for transmitting the normal / reversing force of the motor to the drum is determined. It is possible to reduce the cost and the number of assembling steps. [Structure] A tension applying device 25 is formed from a single spring wire in the shape of a frame in which both ends are overlapped with each other, and an arm member 32 is pivotally supported at the center, and the arm member 32 is attached to both ends of the arm member 32. The belt 29 is moved to the drum 2 by the restoring force from the elastically deformed state in which both ends of the member 32 are separated.
Pulleys 33 and 34 that are pressed at positions in both forward and reverse directions of 2
Composed by and.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum type clothes dryer having a function of reversing a drum in a normal direction, and in particular, a drum type clothes machine having an improved tension applying device for applying a tension to a belt for forward and reverse directions. Regarding dryers.

[0002]

2. Description of the Related Art Recently, in a drum type clothes dryer,
A drum having a function of reversing the drum in a normal direction is provided. In the case of this type, the normal / reverse rotation of the drum is selected according to the course of operation, and for example, the dry operation suitable for the type of clothes to be dried can be performed.

FIG. 7 and FIG. 8 show the structure of this, in which the drum 1 is driven by a motor 3 in an outer box 2 via a motor pulley 4 and a belt 5 wound around the drum 1 from the motor pulley 4. It is designed so that it can be reversed or reversed.

Further, two arm members 7 and 8 are inserted and attached to a motor base 6 to which the motor 3 is fixed on the bottom surface of the outer box 2, and a pulley 9 is attached to each tip of the arm members 7 and 8. , 10
And the pulleys 9 and 10 are pressed against the belt 5 from the outside at both the forward and reverse positions of the drum 1 by the spring force of the tension coil spring 11 stretched between the arm members 7 and 8. Then, a tension applying device 12 that applies tension to the belt 5 in both the forward and reverse directions of the drum 1 by pressing the belt 5 is configured.

[0005]

In the case of the above-mentioned conventional one, two pulleys 9 and 10 are required to form the tension applying device 12, and two arm members 7 and 8 are provided.
However, since the tension coil spring 11 is required, the number of parts is large and the cost is high. Further, in this case, there is a problem that the number of assembling steps is increased.

The present invention has been made in view of the above circumstances. Therefore, an object of the present invention is to reduce the number of parts constituting the tension applying device to reduce the cost and the number of assembling steps. It is to provide a drum type clothes dryer capable of

[0007]

In order to achieve the above object, in the drum type clothes dryer of the present invention, the tension applying device is formed from a single spring wire rod in the shape of a frame in which both ends overlap each other, and the center of the tension applying device is formed. And a position of the belt in both the forward and reverse directions of the drum by a restoring force from an elastically deformed state in which both ends of the arm member are attached to both ends of the arm member and the both ends of the arm member are spaced from each other. It is characterized in that it is configured by a pulley that is pressed by.

[0008]

According to the above means, only one arm member is required,
The tensioning device can be constructed without the need for a tension coil spring.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. First, FIG. 2 shows the overall structure of the drum type clothes dryer, in which an outer box 21 is provided with a drum 22 together with a fan casing 23, a motor 24, a tension applying device 25 and the like.

The motor 24 is a reversible motor. Specifically, the motor 24 is fixed on the inner bottom surface of the outer box 21 by a motor base 26, and protrudes outward from both sides of the motor base 26 (left and right in FIG. 2). The first motor pulley 27 is attached to one end (left side in the figure) of the rotating shaft 24a, and the second motor pulley 28 is attached to the other end (right side in the figure).

Therefore, those motor pulleys 27, 2
Of the eight, a belt 29 is hung from the first motor pulley 27 to the outer periphery of the drum 22, and a forward / reverse force is applied from the motor 24 to the drum 22 via the belt 29.

On the other hand, from the second motor pulley 28, the fan pulley 3 disposed behind the fan casing 23.
A belt 31 is hung on 0, and a positive / reverse force is similarly applied from the motor 24 to the fan pulley 30 and the fan (not shown) in the fan casing 23 via the belt 31.

On the other hand, the tension applying device 25 is provided near the first motor pulley 27 for applying a tension to the belt 29, and in detail, is constituted by an arm member 32 and pulleys 33, 34. Further, as shown in FIGS. 3 to 5, the arm member 32 is a rectangular frame in which both side portions 32a and 32b are curved in a bulge shape and both end portions 32c and 32d are overlapped from one spring wire. It is formed into a shape.

On the other hand, as shown in FIG. 6, the bottom of the outer box 21 has an anti-C-shaped support portion 35 and a support portion C.
A support portion 36 having a character shape is cut and raised, and the support portions 35 and 36 are formed at the central portion 3 of the arm member 32.
2e is fitted and the arm member 32 is pivotally supported.

Then, both ends 32c of the arm member 32,
The pulleys 33 and 34 are individually attached to 32d,
By spreading the arm member 32 through the belt 29 between the pulleys 33 and 34, the arm member 32 is elastically deformed so that the both end portions 32c and 32d are separated from each other, and the restoring force from this deformed state causes The belt 29 is pressed by the pulleys 33 and 34 at positions in both the forward and reverse directions of the drum 22, and thus tension is applied to the belt 29 in both the forward and reverse directions of the drum 22.

According to the above structure, the tension applying device 2
In order to configure 5, the arm member 32 need only be one unlike the conventional two, and a tension coil spring or the like is not required. Therefore, the number of parts can be reduced and the cost can be reduced. In addition, the number of assembling steps can be reduced as desired.

The present invention is not limited to the embodiments described above and shown in the drawings, but may be implemented with appropriate modifications without departing from the scope of the invention.

[0018]

As is clear from the above description, the drum type clothes dryer of the present invention has a function of reversing the drum in the normal direction, and a belt for transmitting the normal / reversing force of the motor to the drum. A tension applying device for applying tension in both the forward and reverse directions of the drum is provided with an arm member which is formed in the shape of a frame in which both ends overlap from one spring wire, and whose central part is pivotally supported, and both end parts of this arm member. And a pulley that presses the belt at both forward and reverse positions of the drum by a restoring force from an elastically deformed state in which both ends of the arm member are separated from each other. Therefore, it is possible to reduce the number of parts constituting the tension applying device, and it is possible to achieve the excellent effect that the cost can be reduced and the number of assembling steps can be reduced.

[Brief description of drawings]

FIG. 1 is a front view of a main portion showing an embodiment of the present invention.

[Fig. 2] Side view of the entire fracture

FIG. 3 is a side view of a single arm member.

FIG. 4 is a front view of the same member alone.

FIG. 5 is a perspective view of the same member alone.

FIG. 6 is a perspective view of a portion that supports the member.

FIG. 7 is a view corresponding to FIG. 2 showing a conventional example.

FIG. 8 is a view equivalent to FIG.

[Explanation of symbols]

22 is a drum, 24 is a motor, 25 is a tension applying device, 2
9 is a belt, 32 is an arm member, and 33 and 34 are pulleys.

Claims (1)

[Claims] 1. A belt having a function of reversing a drum in a normal or reverse direction, a belt applied to the drum, a motor for applying a forward or reverse force to the drum via the belt, and a belt in both normal and reverse directions. An arm member having a tension applying device for applying a tension, and the tension applying device is formed in the shape of a frame in which both ends are overlapped from one spring wire and the central part is pivotally supported, and both ends of this arm member. Drum type, which is attached to a portion of the arm member and is configured to press the belt at a position in both forward and reverse directions of the drum by a restoring force from an elastically deformed state in which both ends of the arm member are separated from each other. Clothes dryer.