JPS5919279Y2 - dryer door switch device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a door switch device for a dryer, which mainly includes a door switch that responds to the opening and closing of a door.

Conventionally, the door switch of this type of dryer is installed inside the outer box, that is, inside the machine, along with the motor, drum, blades, heater, etc., and inside the machine, it is used to open and close the door that opens and closes the entrance and exit for drying materials on the front of the outer box. In response to this, electricity is supplied to the motor and heater, in other words, the drying operation is controlled intermittently.

However, it is very difficult to arrange and install the door switch installed inside the aircraft so that it is not directly heated by the heater also located inside the aircraft, and it must be placed in the optimal relationship with the door. There were disadvantages that were not worth it.

Furthermore, even with such careful arrangement, the door switches installed inside the aircraft are exposed to the high temperature atmosphere inside the aircraft and are prone to failure, and furthermore, they are difficult to see when inspecting or repairing malfunctions. Since it was difficult to reach, the work was slow and the service quality was poor.

This invention was made in view of the above circumstances,
Therefore, the purpose is to be able to place the heater in an optimal relationship with the door without being subject to any positional restrictions, to be difficult to break down, and to have excellent serviceability in the event of a breakdown. To provide a door switch device for a dryer which is advantageous in terms of safety and damage prevention.

An embodiment of the present invention will be described below with reference to the drawings. First, in FIG. In addition, a heater, etc. is installed inside the blade to heat the air before the air is drawn in from outside the machine and supplied to the drum, and there is an opening in the front for putting in and taking out the material to be dried. A material entrance/exit 2 is provided.

In addition, on the front of the outer box 1, 3 is a timer for operation control, 4 is a door that opens and closes the entrance/exit 2, 5 is a door hinge,
6 is a switch cover installed in parallel with the door 4; 7 is a filter cover for the exhaust port located above the switch cover 6 and also installed in parallel with the door 4; The legs 8 are inserted into holes (not shown) on the front surface of the outer box 1, and the mounting pieces 9 on the upper edge are fixed to the front surface of the outer box 1 with screws 10 to make them removable. The switch cover 6 is inserted into a hole (not shown) on the upper surface of the switch cover 6, and the claw 12 at the upper edge is elastically engaged with a hole or recess (also not shown) in the front surface of the outer box 1, thereby making it detachable in the same manner as described above.

Incidentally, reference numeral 13 indicates a removal handle on the upper part of the filter cover 7.

Now, in FIGS. 2 and 3 showing the inside of the switch cover 6, reference numeral 14 is made of an electrical and thermal insulating material, for example, which is attached to the front recess 1a of the outer box 1 with screws 15 from inside. This is a switch mounting board made of plastic, and a door switch 16 using a microswitch, for example, is mounted on the outer (front) screw 1 along with its actuator 17.
In this embodiment, the door switch 16 is attached to the outside of the machine near the door 4, and the door switch 16 is covered from the outside by the switch cover 6. There is.

In addition, 19 is a lead wire for connecting the door switch 16, and
Reference numeral 20 denotes holes formed in the inner and inner walls of the switch cover 6. Through these holes 20, the switch operation piece 21 of the door 4 pushes the actuator 17 when the door 4 is closed, closing the door switch 16, and the motor and the Electricity is supplied to the heater, that is, drying operation is enabled.

Therefore, when the door 4 is opened from this state, the pressure on the actuator 17 by the switch operation piece 21 is released and the door switch 16 is opened, stopping the drying operation, as shown by the two-dot chain line in FIG. It is.

As described above, in this embodiment, the door switch 16 that responds to the opening and closing of the door 4 is attached near the door 4, especially outside the machine, so it is no longer subject to positional restrictions from the heater inside the machine. It can be freely arranged, and therefore its arrangement can be limited to only the door 4, optimizing its relationship with the door 4, and making the official's operation more reliable.

Furthermore, the door switch 16 attached outside the machine is not affected by the high temperature atmosphere inside the machine, and therefore, failures can be eliminated or almost eliminated.Furthermore, even in the event of a failure, the filter cover 7 can be removed. If the switch cover 6 is removed and then the switch cover 6 is removed, the switch will be completely exposed, so the operator can see it clearly and have sufficient access to carry out inspections, repairs, or replacements, thereby improving serviceability. can be significantly improved.

In addition to the above, before the switch cover 6 is removed, the switch cover 6 is configured to cover the door switch 16 from the outside, so even if the door switch 16 is outside the machine, it cannot be used for the door switch 16. The door switch 16 can eliminate the fear of people or children touching it and get an electric shock, and can ensure sufficient safety.Furthermore, the door switch 16 will not be damaged or destroyed by external factors. Furthermore, the electrical conductivity is not impaired due to the adhesion of lumps, so that it can be used in good condition for a long time.

Moreover, in this case, the switch cover 6 is removable, so in the event of a failure, the door switch 1 can be removed.
There is no problem in carrying out inspections, repairs, etc. in step 6, and it can contribute to the improvement in serviceability mentioned above.

In the above embodiments, the present invention has been described as applied to a drum dryer, but the present invention can be widely applied to other dryers in general, and details of each part etc. The invention may be modified and implemented as appropriate without departing from the gist of the invention.

In summary, the present invention provides a dryer that has a door that opens and closes an opening for taking in and out items to be dried, as well as a door switch that responds to the opening and closing of this door. It is characterized by a removable switch cover that is attached to the door switch and covers the door switch from the outside, thereby optimizing only the relationship with the door without being subject to positional restrictions with the heater. In addition to being easy to maintain and place, it is difficult to break down, and even in the event of a breakdown, serviceability can be greatly improved, and safety can be sufficiently ensured. It is possible to provide a door switch device for a dryer that has many excellent practical effects, such as being able to be used in good condition for a long time without causing any trouble.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; Fig. 1 is a front view of the dryer as a whole, Fig. 2 is a cutaway front view of the main part, and Fig. 3 is a line III-III of Fig. 2. FIG. In the figure, 1 is an outer box, 2 is an entrance/exit (opening) for drying materials, 4 is a door, 6 is a switch cover, 16 is a door switch, and 17
is an actuator, and 21 is a switch operation piece.

Claims (1)

[Scope of utility model registration request] In a dryer having a door that opens and closes an opening for taking in and taking out items to be dried, and a door switch that responds to the opening and closing of this door, the door switch is attached to the outside of the machine near the door, and A door switch device for a dryer, characterized by being provided with a removable switch cover that covers the door switch from the outside.