JPS6399899A - Door of dryer - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a door for a dryer or the like that is composed of a door frame and an inner plate.

(Prior Art) For example, a dryer is generally provided with an opening on the front surface for putting in and taking out clothes, and the opening is opened and closed by a door having a transparent part formed in the center.

Conventionally, this type of door has a structure in which an inner plate made of transparent plastic is fixed to a door frame having an opening in the center using screws or the like so as to close the opening.

(Problem to be Solved by the Invention) However, in the above configuration, the door is composed of two parts, the door frame and the inner plate, and is assembled with screws. There is a problem that assembly work is required, and the overall productivity is poor.Moreover, in the dryer, the back side of the rabbit is exposed to the hot air in the drying chamber, causing large thermal expansion, and the clothes inside are drying. The inner panel must be installed very firmly as it will hit the back of the door during operation.

Therefore, fitting (R construction) is used to fix the inner plate,
The assembly work is extremely troublesome as it requires a large number of mounting screws.

The present invention has been made to solve the above-mentioned problems, and therefore, its purpose is to provide a door for a dryer or the like that can improve productivity while also dealing with thermal effects.

[(1-Construction of the Invention) (Means for Solving the Problems) The door of the dryer, etc. of the present invention has a door frame and an inner plate in a joined state in which parts of the door frame and the inner plate are overlapped with each other using different plastics. In addition to integrally molding the outer periphery of this joint, the outer periphery of this joint is placed on the outside of an annular shielding wall installed on the back of the door to airtightly separate the outer periphery of the door from the opening of the dryer, etc. It is characterized by its location.

(Function) Since the door frame and the inner plate are integrally molded with parts overlapped, they can be handled as one part, which is extremely advantageous in terms of parts management and assembly work. .

In addition, even if the joint is susceptible to adverse thermal effects, the annular barrier provided on the door prevents hot air from inside the opening from hitting the outer periphery of the joint between the W breaker and the inner plate. Since this can be prevented, problems regarding bonding strength do not occur.

(Embodiment) A first embodiment in which the present invention is applied to a dehumidifying drum dryer will be described below with reference to FIGS. 1 to 6.

First, in FIG. 2 showing the overall configuration, 1 is the front plate 2.
An outer box 4 has an opening 3 for putting in and taking out clothes, and 4 is an outer box 1.
A casing with an open rear face disposed at the rear of the drum, 5, is a drum constituting a drying chamber.

A large-diameter opening 5a formed on the rear surface of the drum 5 is rotatably fitted to the outer circumference of the casing 4, and an opening 5b formed on the front surface is rotatably connected to the opening 3 of the front plate 2 via a bearing 6. is mated to. On the other hand, a double-blade-shaped fan 7 that also serves as a heat exchanger is disposed within the casing 4, and is driven to rotate together with the drum 5 via a belt 8 by a motor (not shown). As the fan 7 rotates, the air in the drum 5 is sucked into the casing 4 through the intake port 9 formed at the center of the front surface of the casing 4, and is sent out in the centrifugal direction by the fan 7.
It is hot-aired by the heater 10 and returned into the drum 5 through the discharge port 11. In addition, on the rear side of the fan 7, outside air is sucked into the casing 4 from the intake port 11 on the rear side of the outer box 1, and in the process of being sent out in the centrifugal direction by the fan 7, air flows inside the drum 5 on the front side of the fan 7. It exchanges heat with the warm air and is then discharged from the exhaust port 13 to the outside of the machine. Through such heat exchange, the humid warm air circulating inside the drum 5 is dehumidified, and the generated dew water is transferred to the drain vibrator 14 and the water receiver 15.
The water is discharged through a drainage hose (not shown) in order. In addition, 16 is a lint filter detachably attached to the front surface of the casing 4 so as to cover the intake port 9.

Now, a rectangular recess 2a is formed in the front panel 2 of the outer box 1 around the opening 3, and a door 17 for opening and closing the opening 3 is housed in this recess 2a in a closed state. The pivot is placed so that it looks like this. The door 17, as shown in FIG.
It is composed of a door frame 18 having an approximately rectangular shape as a whole, and an inner plate 19 positioned so as to close an approximately 116 circular opening 18a formed in the center of the second door frame 18. The plate 19 is integrally molded from plastics of the same series but different types by a molding method to be described later.

Specifically, the door frame 18 is made of colored ABS resin, and the inner plate 19 is made of transparent AS resin. In addition, the inner plates 19 are in a bonded state in which they overlap each other along the back side of the door frame 18 at the outer part of the opening tea of the door frame 18 (the bonded portion 20 is shown by the thick line in FIG. 1). )
An annular shielding wall 21 is integrally provided on the outer periphery of the drum 5 and protrudes toward the drum 5 side. This annular shielding wall part 21 is provided at a position where the tip end thereof comes into contact with the front end surface of a gasket 22 provided at the peripheral edge of the opening 3 when the door 17 is closed. Therefore, when the door 17 is closed, the annular shielding wall 21 closes to the gasket 22.
As a result, the annular shielding wall 21 on the back side of the door 17
The outside portion of the opening 3 is airtightly separated from the inside of the opening 3. Then, the joint 2 between the door frame 18 and the inner plate 19
0 extends to the outside of the annular shielding wall 21, and the outer peripheral portion of the joint portion 20 is also formed in an annular shape outside the annular shielding wall 21. Reference numeral 23 denotes a pivot shaft protruding from both the upper and lower end surfaces near one side of the door frame 17, which is formed into a cylindrical shape with slotted grooves integrally with the seat portion 23a, as shown in FIG. It is rotatably fitted into a bearing hole 24 formed in a recess 2a of the front plate 2 (see FIG. 1).

Although not shown, a well-known engagement mechanism +ti for locking the door 17 in the closed state is provided on the side of the door 17 opposite to the pivot 23.

Next, a method of forming the above-mentioned door 17 will be explained with reference to FIGS. 5 and 6. In the figure, 25 is IPIII2
A rotary mold that can rotate around 5a, 26.27 is a movable mold provided on both the left and right sides of this rotary mold 25, and is movable! ! ! The mold 26 can be opened to the left, and the movable mold 27 can be opened to the right. As shown in FIG. 5, a cavity for forming the inner plate 19 is formed between the movable mold 26 and the rotary mold 25 that have been matched, and a cavity for forming the inner plate 19 is formed between the movable mold 27 and the rotary mold 25 that have been matched. A cavity corresponding to the overall shape of the door 17 is formed. First, in the mold matching state shown in FIG. 5, transparent AS resin is injected into the cavity from the gauge h 26 a of the left movable mold 26 to mold the inner plate 19.

After this, the mold is immediately opened as shown in Fig. 6, and the rotary mold 2
Turn 5 half a turn in the direction of the arrow and align the molds again. After this,
Movable again! Transparent AS resin is injected from the gate 1' 26a of 226, and the gate 27a of the movable mold 27 on the right side is injected.
Inject colored ABS resin into the cavity. At this time,
In the cavity on the right side, the inner plate 19 immediately after molding is stored, leaving a cavity with a shape corresponding to the door frame 18. Therefore, the colored ABS resin injected from the gate 27a is injected into the door frame 18. , and the resins are fused together at the portion where they contact the inner plate 19 to form a joint portion 20 that is firmly coupled. Thereafter, the mold is opened, the completed door 17 is taken out from the right-hand cavity, and the above steps are repeated to continuously manufacture the door 17 in which the door frame 18 and the inner plate 19 are integrated.

According to this embodiment having the structure described in -I-, the door 17 is composed of the door frame 18 and the inner plate 19, and since both can be integrally molded, it is sufficient to treat them as one component in terms of parts management. , and also eliminates the need to assemble the 17i117. Therefore, compared to the conventional configuration in which these parts had to be molded separately and then assembled one by one using screws or the like, this is extremely advantageous in terms of parts management and assembly work, and manufacturability is greatly improved. Furthermore, since the door frame 18 and the inner plate 19 are integrated at the joint 20 with their resins fused to each other, unlike a structure in which they are joined by screws, engagement claws, etc., there is no gap between them. It has no generation, has excellent airtightness, and has an excellent appearance, which can improve marketability.

Furthermore, in view of the fact that the door frame 18 and the inner plate 19 are integrally molded, the outer periphery of the joint 20 between the two is positioned outside the annular shielding wall 21 that is airtightly separated from the opening 3. This prevents the hot air inside the drum 5 from hitting at least the outer peripheral portion of the joint 20. As a result, even though the joint 20 of the door 17 is more susceptible to adverse thermal effects than other parts, the entire joint 20 is exposed to hot air and its hardening strength is reduced. This can prevent this from happening, thereby increasing the fixing strength of the inner plate 19 to a level comparable to that of screwing, and also preventing deformation due to thermal effects. Furthermore, especially in this embodiment, since the pivot shaft 23 of the door 17 is formed into a cylindrical shape with slotted grooves instead of the conventional solid shaft, the following incidental effects of feature a of this embodiment are also obtained. Obtainable. That is,
For example, if a strong impact force is applied to the pivot part of the door 17, such as by forcefully opening the door 17 with excessive force, the outer box There was a problem that the front plate would break at the force-receiving hole portion. When such damage occurs, it is necessary to replace the front plate in order to repair it, but since the front plate is large and expensive, and has a structure that supports the front side of the drum, it is difficult to replace it. It requires a lot of effort. On the other hand, in this embodiment, door 1
Since the structure is such that the strength of the axis 23 of D+f 17 is reduced relative to tlJ, if an impact force that would damage the front plate 2 is applied, the axis 23 of D+f 17 will be damaged first before the front plate 2 is damaged. It will break. Therefore, in such a case, it is sufficient to replace the door 17, which is small, cheap, and easy to replace, and overall repair costs and labor can be sufficiently reduced.

Note that the pivot is not limited to the one shown in this example, but may be simply formed into a hollow cylindrical shape, or even if it is a solid type, a small diameter portion may be formed at the base to prevent excessive impact force. Even if it is designed to break, the same effect as described in -L can be achieved.

Next, a second embodiment of the present invention will be described. The overall structure (111) in this embodiment is the same as that of the first embodiment, and the only difference is the (1'4) structure of the door, so explanation and illustration of the overall structure will be omitted, and FIGS. Only the structure of the door will be explained based on Fig. 8.Similar to the first embodiment, this door is composed of a door frame 28 and an inner plate 29 located on the back side of this door frame 28. is integrally molded from different types of plastic using the molding method described above.The door frame 28 has a generally rectangular shape as a whole, has a semicircular opening 28a in the center, and has a surrounding wall around the outer periphery. Part 28
It has b integrally. On the other hand, the inner plate 29 is in a bonded state where it overlaps the back side of the door frame 28 over the entire area (the bonded portion 30 is shown by a solid line in FIG. 7), and the opening 28a
An annular shielding wall portion 31 is integrally protruded from an annular region surrounding the door frame 28, and has a surrounding wall portion 29a suspended from the surrounding wall portion 28b of the door frame 28 on the outer periphery. As shown in FIG. 8, on the surface of the inner plate 29 facing the drum 5, a large number of reinforcing ribs 32 are integrally molded radially between the annular shielding wall 31 and the surrounding wall 29a. The portion where the reinforcing ribs 32 are formed is covered by the joint portion 30 from the front side. Further, when the door is closed, the tip of the annular shielding wall 31 comes into contact with the front end surface of the gasket 22, and the back side of the door is thus airtightly divided with the annular shielding wall 31 as a boundary.
This is similar to the example.

” - According to the author, the door is separated from the door frame 28 and the inner panel 29 (
1? Since the two parts can be integrally molded and handled as one part, it is possible to improve assembly workability and facilitate parts management. Since it is located outside of 31, it is possible to avoid adverse thermal effects and obtain sufficient bonding strength.

Furthermore, since the reinforcing ribs 32 are integrally molded on the inner plate 29,
The strength of the inner plate 29 and the entire door can be sufficiently increased, and deformation caused by the opening and closing operations of the door can be suppressed accordingly, making it possible to improve the operability of opening and closing the door, and also to achieve cost advantages. Since resin such as polypropylene can be used, manufacturing costs can also be reduced. Furthermore, since the t+li strong ribs 32 are provided in the forming area of the joint portion 30, even if so-called flesh marks occur on the inner plate 29 due to the reinforcing ribs 32, this will be avoided during molding of the door frame 28. Since it is hidden, it does not reach the surface of the door, and it is possible to reliably prevent the appearance from being damaged.

The present invention is not limited to the embodiments described above and shown in the drawings; for example, the door frame and the inner panel may be made of the same resin but different in color (different materials). Alternatively, as a combination other than the resins already exemplified, for example, the door frame 18 may be made of high-strength resin and the inner plate 19, which does not require relatively strength, may be made of inexpensive resin. The present invention can be modified and implemented in various ways without departing from the gist, such as application to equipment that uses warm air and hot water.

[Effects of the Invention] As described above, the present invention provides an annular shield in which the door frame and the inner plate of the door are integrally molded in a joined state in which parts overlap with each other, and the joined part is formed on the back surface of the door. Since it is located outside the wall, the door can be constructed from a single component, greatly improving manufacturability.Moreover, it eliminates adverse thermal effects and increases the bonding strength between the door frame and the inner panel. This has the excellent effect of ensuring safety.

[Brief explanation of the drawing]

1 to 6 show a first embodiment of the present invention.
The figure is an enlarged longitudinal sectional view of the main parts, Fig. 2 is an overall longitudinal sectional view, Fig. 3 is a perspective view of the door, Fig. 4 is an enlarged perspective view of the pivot, and Figs. 5 and 6 are the molding of the door. 7 and 8 are longitudinal cross-sectional views showing the process, and show the second embodiment of the present invention, and FIG. 7 is similar to FIG. 1.
'[Figure 1 and Figure 8 are rear views of the door. In the drawing, 2 is the front plate, 3 is the opening, 4 is the casing, and 5
is the drum, 17 is the door, 18.28 is the door frame, 19.29 is the inner plate, 20.30 is the joint, 21°31 is the annular shielding part,
22 is a packing, 23 is a pivot, 25 is a rotating type, 26.2
7 is a movable type. Applicant Toshiba Corporation Figure 1 Figure 2 Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] 1. In a door for opening and closing an opening of a dryer, etc., consisting of a door frame and an inner plate located on the inner peripheral side of the door frame,
The door frame and the inner plate are integrally molded using different types of plastic in a joined state in which parts overlap each other, and
A dryer, etc., characterized in that at least the outer peripheral part of the joint part is located outside of an annular shielding wall installed on the back side of the door so as to airtightly partition the outer peripheral part of the door from the opening. door. 2. The door of a dryer or the like as set forth in claim 1, wherein reinforcing ribs are integrally molded in the area where the joint portion is formed on the outside of the annular shielding wall portion.