JPS5838491Y2 - Dryer door switch device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a dryer door switch device with a so-called double safety structure, and its purpose is to activate the switch device only when a push button is pressed after the door is closed, so that the door The switch device will not operate even if the switch is closed or the push button is operated alone, which greatly improves safety.In addition, the structure is extremely simple, can be manufactured at low cost, and is reliable. It is an object of the present invention to provide a door switch device for a dryer that provides a suitable operating state.

An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a dryer main body, and inside thereof, although not shown, there are a rotating drum as a drying chamber, an electric heater, an air blower that generates hot air together with the electric heater and supplies it into the rotating drum, and this air blower and the rotating drum. A drive motor or the like is provided to rotationally drive both.

A substantially rectangular recess 2 is provided on the front plate 2 of the dryer main body 1.
A is formed, and an opening 3 is provided in the recessed portion 2a for taking clothes and other items to be dried into and out of the rotating drum, and a door 4 for opening and closing the opening 3 is connected via hinge members 5, 5. It is rotatably supported.

Reference numeral 6 indicates a protrusion protruding from the inner surface of the door 4, and reference numeral 7 indicates an insertion hole provided in the recessed portion 2a so as to face the protrusion 6. When the door 4 is closed, the protrusion 6 passes through the insertion hole 7 to the main body of the dryer. 1.

8 is an operation panel attached to the front upper part of the dryer body 1;
is a timer device provided at the left end of the operation panel 8.

Reference numeral 10 denotes a mounting board, in which the left end of the front part 10a is bent rearward at a substantially right angle to form a support part 10b;
The upper and lower ends of the front section 10a are located on the back side of the operation panel 8 and are fixed to the inner surface of the front plate 2, for example, by spot welding or the like.

Reference numeral 11 denotes an operating rod made of an elastic material such as a plate material such as 4-6 brass, and has a pressing portion 11 a bent leftward at the rear edge of the intermediate portion. A hanging portion 11b integrally extends downward from a, and a receiving portion 11C for receiving the projection 6 is formed at the lower end of this elastic deformation portion 11b.

The upper end of the operating rod 11 is rotatably supported via a washer 13 by a shaft pin 12 fixed to the front end of the support portion 10b.

Reference numeral 14 denotes a rotation regulating plate, the front end of which is rotatably supported by the shaft pin 12 together with the operating rod 11, and is located between the operating rod 11 and the support portion 10b.

Reference numeral 14a denotes a bent portion provided at the lower end of the rotation regulating plate 14, with which the pressing portion 11a of the operating rod 11 is brought into contact.

Reference numeral 15 designates a microswitch as a switch device, which is attached to a horizontal portion 10 bent at the lower end of the support portion 10b.
It is fixed to the lower surface side of C with screws 16 and 16, and its actuator 15a is opposed to the lower part of the pressing part 11a.

Reference numeral 17 denotes an abbreviated engagement hole formed in the rear part of the rotation regulating plate 14, with one front end serving as the engagement part 17a, and the other end serving as the rear end facing downward for engagement release. Section 17b.

Reference numeral 18 denotes a tension spring that urges the rotation regulating plate 14 to rotate in the direction of arrow A. One end of the spring 18 is engaged with a hook hole 19 provided at the rear end of the rotation regulating plate 14, and the other end is engaged with a hook hole 19 provided at the rear end of the rotation regulating plate 14. It engages with a hook hole 20 provided at the rear end.

Reference numeral 21 denotes a guide hole formed in the support portion 10b so as to face the engagement hole 15 and to be oriented in the front-rear direction.

Reference numeral 22 denotes an operating lever with a push button 23 attached to its front end, and a shaft pin 25 that is loosely inserted into the retaining hole 17 and the guide hole 21 through a washer 24 is fixed to the rear end of this lever. .

26 is a bushing having a push button insertion hole 26a fitted into a through hole 27 passing through the operation panel 8 and the front plate 2;
3 is the operation panel 8 through the push button insertion hole 28 provided in the front part 10a and the push button insertion hole 26a' of the bushing 26.
is protruding from the front.

Reference numeral 29 denotes a tension spring, one end of which is engaged with a hook hole 30 provided at the rear of the operating lever 22, and the other end is engaged with hook holes 31, 31 provided on the front face portion 10a, so that the operating lever 22 can be moved forward. It is biased in the direction of arrow B.

Next, the operation of this embodiment configured as above will be explained.

When the door 4 is opened, the rotation regulating plate 14 is biased in the direction of arrow A by the tension spring 18, and the operating lever 22 is biased in the direction of arrow B by the tension spring 29, as shown in FIG. , the shaft pin 25 engages with the engaging portion 17a of the engaging hole 17 to restrict the rotation of the rotation regulating plate 14, and the bent portion 14a abuts the pressing portion 11a to prevent the actuating rod 1 from rotating.
Rotation in the opposite direction of arrow A of 1 is also restricted.

In this state, the hanging portion 11 of the operating rod 11
b comes into contact with the inner surface of the recessed part 2a, and the receiving part 11C faces the insertion hole 7, and the pressing part 11a is separated from the actuator 15a of the microswitch 15, and the microswitch 15 is opened. are doing.

Now, when the door 4 is rotated and closed, the protrusion 6 enters into the dryer main body 1 through the insertion hole 7 and the receiver of the operating rod 11 comes into contact with the part 11C, as shown in FIG. On the other hand, a moving force is applied to the operating rod 11 in the opposite direction of arrow A.

At this time, since the rotation of the rotation regulating plate 14 is regulated by the shaft pin 25 as described above, the rotation of the operating rod 11 is regulated by the bent portion 14 a that comes into contact with the pressing portion 11 a. Therefore, the elastic deformation portion 11 b of the operating rod 11
is elastically deformed and curved in the opposite direction of arrow A by accumulating the moving force caused by the protrusion 6.

In this state, the pressing part 11a is pressed against the actuator 15 as described above.
The microswitch 15 is open at a distance from a.

Close the door 4 as described above and press the push button 2 as shown in FIG.
3 is pushed backward, the operating lever 22 is moved in the direction opposite to the arrow B against the tension spring 29, thereby the shaft pin 25 is moved in the direction opposite to the arrow B along the guide hole 21, and the engagement hole 17 is moved.
is disengaged from the engaging portion 17a and located at the engagement release portion 17b.

Since the moving force applied to the elastically deformable portion 11b of the operating rod 11 applies a rotational force to the rotation regulating plate 14 in the direction opposite to the arrow A through the bending portion 14a,
The rotation regulating plate 14 is rotated in the direction opposite to the arrow A against the tension spring 18, and at the same time, the bent portion 14a is displaced in the direction opposite to the arrow A due to the rotation, so that the operating rod 11 is elastically deformed by the elastic deformation portion 11.
The moving force applied to b causes the shaft pin 12 to rotate in the opposite direction of arrow A, and the pressing portion 11 a is moved backward, and the pressing portion 11 a causes the microswitch 15 to be rotated.
The actuator 15a of the microswitch 15 is pressed to close the microswitch 15.

In this state, the rotation regulating plate 14 is still urged to rotate in the opposite direction of arrow A by the operating rod 11, so the shaft pin 14
5 engages with the engagement release portion 17b to prevent the operating lever 22 from returning in the direction of arrow B.

When the microswitch 15 is closed in this way,
The aforementioned electric heater and drive motor are energized to blow hot air into the rotating drum while rotating the rotating drum, thereby drying the material to be dried stored in the rotating drum.

For example, when the door 4 is opened after performing the above-described drying operation, the protrusion 6 escapes from the insertion hole 7 and the moving force applied to the operating rod 11 disappears. 14 is rotated in the direction of arrow A, and at the same time, the bending portion 14 a applies rotational force in the circumferential direction to the pressing portion 11 a, so that the operating rod 11 is integrally rotated with the rotation regulating plate 14 in the direction of arrow A. The return rotation releases the microswitch 15, and the electric heater and drive motor are cut off.

Then, as the rotation regulating plate 14 returns in the direction of arrow A, the engagement between the shaft pin 25 and the disengagement portion 17b is released, and the operating lever 22 is moved in the direction of arrow B by the biasing force of the tension spring 29. It is returned to its original position as shown in FIG.

Then, when the operation lever 22 returns in the direction of arrow B, the shaft pin 25 engages with the engagement portion 17 a of the engagement hole 17 .

By the way, when the push button 23 is pressed while the door 4 is in the open state, the shaft pin 25 is moved in the direction opposite to the arrow B and is disengaged from the engaging portion 17a, but the operating rod 11 and rotation restriction Since no moving force is acting on the plate 14 in the opposite direction of arrow A, the pressing portion 11a of the actuating rod 11 is pressed against the microswitch 1.
The microswitch 15 is kept in an open state.

According to this embodiment, when the door 5 is closed, the protrusion 6 applies a moving force to the receiving part 11C of the operating rod 11, and at this time the shaft pin 25 moves to the engaging part 17a of the engaging hole 17. The elastically deformable portion 11b of the operating rod 11 is regulated so that the rotation of the rotation regulating plate 14 is restricted and the rotation of the operating rod 11 is restricted by the pressing portion 11a coming into contact with the bent portion 14a.
is elastically deformed while storing the moving force, and the push button 23 is pressed.
By the pressing operation, the shaft pin 25 engages the engagement portion 1 of the engagement hole 17.
When disengaged from 7a, the actuating rod 11 is rotated by the accumulated moving force and the microswitch 15 is closed by the pressing part 11a, so that the door 4 is not closed or the push button 23 is pressed. The microswitch 15 will not operate if the operation is performed alone, and the danger of hands being caught in the rotation of the rotating drum while loading and unloading items to be dried is reliably prevented, greatly increasing safety. It can be greatly improved.

Further, in this embodiment, the operating rod 11 is formed of a plate made of an elastic material, and the pressing portion 11a of the operating rod 11 directly presses the actuator 15a of the microswitch 15, so the structure is very simple. It can be manufactured at a low cost and has a simple configuration, so it does not cause failures and provides reliable operation.

In the above embodiment, the rotation regulating plate 14 having the bent portion 14a is brought into contact with the pressing portion 11a of the operating rod 11 so that both rotate integrally. They may be fixed and integrated with rivets, or they may be formed integrally with a plate made of an elastic material.In short, the rotation restriction of the rotation restriction plate 14 is released and the force is stored in the operating rod 11. When the rotation regulating plate 14 is rotated by the moving force, the rotation regulating plate 1
The microswitch 15 facing the operating rod 14 may be actuated by the displacement of the operating rod 14 as the actuating rod 4 rotates.

In addition, the present invention is not limited only to the embodiments described above and shown in the drawings, and various modifications may be made without departing from the scope of the invention, for example, the operating rod 11 may be formed of an elastic wire. It can be implemented by

As described above, the present invention can provide a door switch device for a dryer that can greatly improve safety, has a simple structure, can be manufactured at low cost, and can provide reliable operation.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view, Fig. 2 is an enlarged perspective view showing the main part partially exploded, and Figs. 3 to 6 show it in different operating states. FIG. 6 is an enlarged side view of the main parts shown in FIG. In the drawing, 1 is the dryer body, 4 is the door, 6 is the protrusion, 10 is the mounting board, 11 is the operating rod, 14 is the rotation regulating plate, 15 is the micro switch (switch device), 17 is the engagement hole, 17a
17b is an engaging portion, 17b is a disengagement portion, 21 is a guide hole, 22 is an operating lever, 23 is a push button, and 25 is a shaft pin.

Claims (1)

[Scope of utility model registration request] A door for opening and closing an opening of the dryer main body, a mounting board provided near the opening and having a guide hole, and a door mounted on the mounting board so as to be rotatable in an overlapping state and facing and engaging with the guide hole. a rotation regulating plate having an engagement hole in which a part and an engagement release part are continuously formed; and a rotation regulating plate provided on the mounting board so as to be slidable along a surface opposite to the rotation regulating plate, and the dryer main body. an operating lever having a push button protruding to the outside from near an opening thereof; and an operating lever provided on the operating lever that is inserted into the retaining hole through the guide hole, and is inserted into the retaining hole when the push button is not pressed. a shaft pin that engages with an engaging portion of the rotation regulating plate to restrict rotation of the rotation regulating plate; an operating rod made of an elastic material provided on the rotation regulating plate; a protrusion that is engaged with a retaining portion of the engagement hole and stores a force for moving the operating rod in one direction when the iron door is closed with rotation of the rotation regulating plate being regulated; and a switch device provided to face the operating rod,
The rotation is achieved by moving the shaft pin along the guide hole by pressing the push button, and disengaging the shaft pin from the engagement portion of the engagement hole so as to correspond to the disengagement portion. When the restriction on the rotation of the restriction plate is released, the rotation restriction plate rotates together with the operation rod due to the moving force stored in the operation rod, and the rotation of the operation rod is caused by the rotation of the rotation restriction plate. A door switch device for a dryer, characterized in that the switch device is actuated by the movement of the door switch device.