JPS5816917B2 - Kaiheibuta no Anzensouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a safety device for an opening/closing lid that maintains the opening/closing lid in a closed state while a rotating body is rotating.

BACKGROUND ART Conventionally, a rotary body such as a dehydration tank in a dehydrator has a structure in which when a lid is opened, a braking device linked therewith is activated to brake the rotation thereof.

However, with this configuration, the dehydration tank continues to rotate due to inertia even after the lid is opened, so if you accidentally put your hand into the dehydration tank, there is a risk that your hand will get caught in the laundry, which is extremely dangerous. It was something.

Furthermore, if the opening/closing lid is kept closed to prevent such a risk, the braking device will not operate, resulting in a disadvantage that the time required to stop the inertial rotation will be longer.

The present invention has been made in view of the above-mentioned circumstances, and includes an actuating device that is displaced by the frictional force generated between a brake drum and a brake shoe when a rotating body is braked by a braking device, and an actuating device that opens and closes a cover by the displacement operation of this actuating device. By providing a locking device that keeps the lid closed, the lid can be mechanically locked in the closed state until the rotation of the rotating body stops, and this can be achieved even in the event of an abnormal power cut, providing a high degree of safety. Additionally, an operating device having an operating member is provided, and the operating device is configured to start braking of the braking device, thereby providing a safety device for an opening/closing lid that can operate the braking device even when the opening/closing lid is closed. purpose.

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 4.

Reference numeral 1 denotes a dehydrator, in which a dehydrating tank 4 as a rotating body is rotatably provided in a water receiving tank 3 fixed to an outer box 2.

Reference numeral 5 denotes a rotating shaft, which protrudes downward from the outer bottom of the dehydration tank 4, penetrates the water receiving tank 3 in a watertight manner, and connects its lower end to the motor 6.
A plurality of springs 8 are coaxially connected to the drive shaft 6a of 7 by a shaft joint 7, and are interposed between the motor 6 and the inner bottom surface of the outer box 2 to elastically move the motor 6. I support it.

A brake drum 9 is integrally formed with the shaft joint 7 and rotates together with the dehydration tank 4.

A brake shoe 10 is provided near the brake drum 9 as described below.

That is, reference numeral 11 denotes a brake piece, which has a bearing portion 11a formed at one end and an arcuate portion in the middle, and the brake shoe 10 is fixed to the inner surface of the brake piece 10 by adhesive or the like. Part 11a with pin 12
The protruding lower end of the pin 12 is slidably supported in the elongated hole 13a of the drip-proof plate 13 fixed to the motor 6.

The brake shoe 10 provided in this manner constitutes a braking device 14 together with the brake drum 9, and is capable of coming into contact with and separating from the brake drum 9, and also moves in the direction of arrow 15 together with the brake piece 11. It is also possible to obtain it.

Note that the rotation direction of the brake drum 9 is the direction of arrow 16.

Reference numeral 17 denotes a spring body, which is stretched between the other end of the brake piece 11 and the drip-proof plate 13, and rotates and urges the brake piece 11 in the direction of arrow 18 to cause the brake shoe 10 to move. It is brought into sliding contact with the brake drum 9 with a predetermined pressing force.

Reference numeral 19 denotes an operation box erected at the rear of the upper end of the outer box 2. A hinge 20 formed in the shape of a box is disposed inside the operation box, and a shaft portion 20a protruding from one end of the hinge 20 is rotatably supported. On the other hand, the other end of the hinge 20 is an opening/closing lid 21 that protrudes forward of the operation box 19 and opens and closes the upper opening of the outer box 2.
It is connected to the rear end of.

Reference numeral 22 denotes a board, which is fixedly placed inside the operation box 19, and one end of the locking piece 23 is rotatably supported on this board.

This locking piece 23 is provided with a bent part 23a in the middle, and is separated from the substrate 22 on the way from this bent part 23a to the other end, and has an oval shape near the other end of this separated part. A hole 23b is formed, and this oval hole 23b is inserted into the hinge 2.
0 is engaged with an engaging protrusion 20b provided at a predetermined distance from the shaft portion 20a.

The locking piece 23 made in this way is attached to the opening/closing lid 21.
It rotates in conjunction with the closing operation.

Reference numeral 24 denotes a brake control member such as a lever that is displaced independently of the locking piece 23;
3 and the substrate 22, and one end thereof is rotatably supported on the substrate 22 coaxially with one end of the locking piece 23.

Further, the lever 24 has a sliding portion 24a at the top of the other end.
The upper end of the operating rod 25 is connected to the lower part thereof.

The lower end of the operating rod 25 is connected to one end of a control wire 26, and the other end of the control wire 26 is connected to the other end of the brake piece 11.

2γ is a claw piece, and this claw piece 27 is interposed between a portion of the locking piece 23 separated from the base plate 22 and the lever 24, and its lower end is rotatably pivoted to the locking piece 23. Support.

The pawl piece 27 thus formed is urged to rotate in the direction of arrow 29 by the elastic force of the spring body 280, and locks the bent portion 24b of the lever 24 with the pawl 27a formed on one side edge thereof. ing.

In this state, the brake piece 11 is connected to the spring body 1.
The brake shoe 10 is rotated in the direction of the arrow 30 against a repulsive force of 70 to maintain the brake shoe 10 spaced apart from the brake drum 9.

Reference numeral 31 designates a push button as an operating member, and the push button 31 is reciprocally supported on a mounting portion 22a formed by bending the upper end of the base plate 22, and an inclined surface 31a is formed at the lower end of the push button 31. This is brought close to the sliding part 27b formed by bending the upper end of the claw piece 27.

Note that the push button 31 is returned to its original position by the spring force of the spring body 320.

Push button 31, claw piece 27 and lever 2 configured as above
4 constitute an operating device 33, respectively.

Reference numeral 34 designates a first lock lever as a locking device, which has an inclined surface 34a formed in the middle of one side edge, a blocking protrusion 34b at the lower part of the inclined surface 34a, and a blocking protrusion 34b. A locking protrusion 34C is formed below the protrusion 34b.

This first lock lever 34 has its upper end rotatably supported on the base plate 22, and the spring body 3
The locking protrusion 34c rotates in the direction of the arrow 36 by the elastic force of 50, and the locking protrusion 34c locks the locking portion 23c bent at the other end of the locking piece 23. rotation in the direction of arrow 37 is stopped.

33 is a switch, which is provided close to the other side edge of the first lock lever 34;
34 in the direction of arrow 39 to open the energizing path of the motor 6.

Reference numeral 40 designates a second lock lever as a locking device that cooperates with the first lock lever 34. This second lock lever 40 is opposed to the board 22 at a predetermined distance, and a midway portion of the second lock lever 40 is arranged to face the board 22 at a predetermined distance. It is pivotably supported so that it can rotate.

The second lock lever 40 constructed in this manner has the lower end of the first lock lever 34 interposed between it and the base plate 22, and the locking portion 40a formed on the upper part of the second lock lever 40 is interposed between the second lock lever 40 and the base plate 22. It is located below the locking protrusion 34c of No. 34 with a predetermined distance therebetween.

Reference numeral 41 denotes a spring body which is stretched between the lower end of the second lock lever 40 and the base plate 22, and is connected to the second lock lever 40.
is urged to rotate in the direction of arrow 42.

43 is an actuation wire, one end of which is connected to the second lock lever 4.
When the operating wire 43 is pulled, the second lock lever 40 rotates in the direction of the arrow 44 against the elastic force of the spring body 410, and the locking portion 40a of the second lock lever 40 is connected to the lower end of the spring body 410. The locking portion 23c of the stopper piece 23 is positioned within the rotation locus of the locking portion 23c.

45 is 1. with a lever. A midway portion thereof is rotatably supported by the pin 12, and one end is provided with the actuation wire 43.
The other end is connected.

46 is a locking pin, and the pin 12 is connected to the brake piece 11.
When the lever bar 4 is moved along the elongated hole 13a of the drip-proof plate 13 in the direction of arrow 15, the lever bar 4 is displaced along with this movement.
5 is locked, and one end of the lever bar 45 is rotated in the direction of arrow 47.

Reference numeral 48 denotes a spring body that urges the brake piece 11 in the direction of arrow 49.

The operating wheel 43 and lever bar 45 configured as described above
constitutes the actuating device 50.

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

When a timer (not shown) is set to a predetermined time, the energizing path of the motor 6 is closed, and the dehydration tank 4 is driven to rotate.

At this time, the dehydration tank 4 continues to rotate for the time set by the timer, but there may be times when it is desired to open the opening/closing lid 21 during the rotation.

In this case, the push button 31 is operated to displace it in the direction of the arrow 51.

Then, the inclined surface 31a of the push button 31 touches the sliding part 27 of the claw piece 27.
By sliding along bK, the pawl piece 27 rotates in the direction of arrow 52, and the pawl 27a releases its engagement with the bent portion 24b of the lever 24.

Then, the lever 24 can be rotated in the direction of the arrow 37, and the control wire 26 is relaxed, so that the brake piece 1
1 is an arrow 1 centered on the pin 12 due to the spring force of the spring body 170.
This rotational displacement of the brake piece 110 is transmitted to the lever 24 via the control wire 26 and the operating rod 25, so that the lever 24 also rotates in the direction of the arrow 37.

As the lever 24 rotates, the sliding portion 24
a comes into contact with the inclined surface 34a of the first lock lever 34 and slides on that surface, so that the first lock lever 34
is rotated in the direction of arrow 39 against the elastic force of spring body 35.

Thus, in a state where the rotation of the lever 240 is stopped by the blocking protrusion 34b of the first lock lever 34, the switch 38 is pressed by the first lock lever 34 and opens the energizing path of the motor 6. It works like this.

When the motor 6 is brought into a power-off state as described above,
At the same time, the brake shoe 10 is pressed against the brake drum 9 by the springing force of the spring body 170 to start braking.

By the way, by rotating the first lock lever 34 in the direction of arrow 39, the locking of the locking piece 33 by the locking protrusion 340 is also released, so that the lid can be opened and closed.

21 can now be opened, but it is subsequently kept in the closed state (the state shown in FIG. 1) in the following manner.

That is, when the brake shoe 10 comes into pressure contact with the brake drum 9, the brake shoe 10, together with the brake piece 11, moves in the direction of the arrow 15 against the elastic force of the spring body 480 due to the frictional force generated therebetween.

As a result, the lever bar 45 moves around the locking pin 46 at the arrow 4
7 directions, and as the actuating wire 43 is pulled by this rotational displacement operation, the second lock lever 40 rotates in the direction of arrow 44 against the elastic force of the spring body 410, 1, and locks the second lock lever 40. The portion 40a is positioned within the rotation locus of the locking portion 23C of the locking piece 23.

Therefore, while the brake shoe 10 is in sliding contact with the brake drum 9 to perform a braking operation, the second lock lever 40
is in a position to lock the locking piece 23, so even if you try to open the opening/closing lid 21 at this time, the locking part 23 of the locking piece 23
0 comes into contact with the locking part 40a of the second lock lever 40 and is prevented from further rotation, so that the hinge 20 of the opening/closing lid 21 cannot also rotate, and the opening/closing lid 21 is kept in the closed state. It is something that can be done.

When the dehydration tank stops rotating 40 times, the brake shoe 1
0 and the brake drum 9, the brake piece 11 moves back in the direction of the arrow 49 due to the elastic force of the spring body 480, thereby relaxing the actuating wire 43.

Then, the second lock bar 40 is rotated in the direction of arrow 42 by the elastic force of the spring body 410, and the locking piece 23 is in a state where it can be rotated in the direction of arrow 37, so that the opening/closing lid 21 can be opened. Become.

Also, if you want to open the opening/closing lid 21 immediately after the timer setting time has elapsed, press the push button 31 in the direction of the arrow 51.
The dehydration tank 4 is braked by the braking device 14 in the same manner as described above, and the opening/closing lid 21 can be opened after its rotation has stopped.

Furthermore, if you are busy doing other household chores and leave the dehydration tank 4 as it is for a while after the timer setting time has elapsed, the dehydration tank 4 will stop naturally and pressing the push button 31 in the direction of the arrow 51 will release the first lock lever 34. is rotated in the direction of arrow 39 to release the lock from the locking piece 23, and since the second lock lever 40 has already been rotated in the direction of arrow 42 by the spring 41, the opening/closing lid 21 can be opened immediately. (It is something that can be done.

Note that when the push button 31 is pressed to open the opening/closing lid 21,
Since the pawl piece 27 is urged to rotate in the direction of arrow 29 by the spring body 28, the pawl 27a engages the bent portion 24b of the lever 24.
When the opening/closing lid 21 is closed, the locking piece 23 is in a position where it can be re-engaged with the opening/closing lid 21.
When the lever rotates in the direction of arrow 53°, the pawl 27a of the pawl piece 27 comes into contact with the lower surface of the bent portion 24b of the lever 24, causing it to rotate in the direction of arrow 53. The first lock lever 34 is rotated in the direction of arrow 30 against the applied force to separate the brake shoe 10 from the brake drum 9, while the first lock lever 34 is rotated in the direction of arrow 36 by the force of the loincloth of the spring body 350 to close the switch. The pressure on 38 is released, and each part returns to the state shown in FIGS. 2 and 3.

As described above, according to this embodiment, by pressing and operating the push button 31 to operate the so-called operating device 33, the first lock lever 34 is released from the locking piece 23 and the switch 38 is pressed. The energizing path of the motor 6 is opened, and at the same time, braking by the braking device 14 is started, and the actuating device 50 is displaced by the frictional force acting between the brake shoe 10 and the brake drum 9, and the actuating device 50
In conjunction with the displacement operation, the second locking lever 40, which is a locking device, rotates in the direction of arrow 44 to lock the locking piece 23, which has been released from the locking by the first locking lever 34, which is also a locking device. Therefore, while the dehydration tank 4 is rotating, the opening/closing lid 21 is kept closed and can be opened after the rotation stops.

Therefore, it is possible to reliably eliminate the risk of putting one's hand into the rotating dehydration tank 4 as in the conventional case.

On the other hand, a lever 24 corresponding to a brake control member has a claw piece 2.
7, the first lock lever 34 and the second lock lever 40, which engage and disengage from the locking piece 23, can move independently relative to the locking piece 23. Since the structure allows the lever 24 to move independently, braking is started at the initial rotational displacement of the lever 24. This causes the second lock lever to move.
40 is rotated to a position where it can be locked with the locking piece 23, and then the first lock lever 34 is released from the locking with the locking piece 23 by a later rotational displacement of the lever 24. The operational anteroposterior relationship necessary to ensure the so-called lid locking effect can be ensured with a relatively free dimensional relationship of each part.

Furthermore, since the double-ended lock levers 34 and 40 move independently, the locking style for these locking pieces 23 is not restricted by the mating lock lever (reliable locking and releasing action is ensured). Can be secured.

Therefore, the reliability of the overall operation can be increased, and the dimensions can be easily controlled during design and manufacturing.

Also, when the push button 31 is pressed while the dehydration tank 40 is rotating, the lever 24 is moved independently from the locking piece 23 by the arrow 37.
Since the braking by the braking device 14 is started without any displacement of the opening/closing lid 21 in the opening direction, the opening/closing lid 21 can be rotated in a state where an article such as a laundry storage basket is placed on the opening/closing lid 21, or when the opening/closing lid is 21, the braking device 14 can reliably start braking by operating the push button 31.

By the way, in the past, a centrifugal force switch was installed on the dewatering motor to detect rotation, and while the dehydrating motor was rotating, the centrifugal force switch energized a locking electromagnet to lock the opening/closing lid in the closed state. There is something I did.

According to such a conventional example, even after the dewatering cage starts braking, the locking action is maintained for a certain period even if it moves to the inertia circuit, but the centrifugal force switch requires at least several hundred rpm to continue the switch operation.
Therefore, as the speed decreases, the locking electromagnet may be cut off during inertia rotation and the lock may be released, which is extremely dangerous.

In addition, devices that use a locking electromagnet may cause an accidental power outage, the power cord wire to be disconnected for some reason, or someone with limited operating knowledge to pull out the power cord plug from the outlet during dehydration operation. If there is an abnormal power cut off, such as when the centrifugal force switch is working normally, the locking electromagnet will be reset and the opening/closing lid will be unlocked while the dehydration function is rotating. However, according to the above configuration according to the present invention, the inertial rotation of the dehydration tank 4 after the start of braking is detected by mechanically displacing the actuating device 50 by the frictional force between the brake shoe 10 and the brake drum 9. Therefore, the actuating device 50, that is, the actuating wire 43 is operated by the brake piece 11 while the braking action is occurring between the brake shoe 10 and the brake drum 9, that is, until the dewatering tank 4 stops rotating. It is pulled through a lever rod 45, and therefore the opening/closing lid 21 is unlocked after the rotation of the dehydration tank 40 has stopped, making it extremely safe.

In addition, since the second lock lever 40, which is a locking device, is controlled not by an electromagnet but by mechanical movement of the actuating device 50, that is, by displacement of the actuating wire 43, etc., and no electromagnet is used, the abnormal power cutoff as described above can occur. Even if there is an opening/closing lid 2
1 can be reliably maintained in the closed state until the dehydration tank 4 is stopped, which is also extremely safe.

In the above embodiment, when the set time of the timer has elapsed, for example, if the magut is activated to displace the push button 31 in the direction of the arrow 51, the timing of the timer can be adjusted independently of the human operation of the push button 31. The dehydration tank 4 can also be automatically braked depending on the progress.

Further, in the above embodiment, the actuating device 50 was composed of the actuating wire 43 and the lever bar 45, but this is a lever.

Although the rake piece is movable as in the above embodiment, the actuation wire may be connected directly to the brake piece.

Furthermore, in the above embodiment, the locking device is actuated via the lever rod 45 which is the actuating device, but the locking device is actuated via the brake piece 11 which is actuated and displaced by the frictional force between the brake drum 9 and the brake shoes 10. Various means for operating the locking device using frictional force can be considered, such as a structure in which the locking device may be configured to operate.

The invention that he believes in is the operation device 1. The configurations of the actuating device, locking device, etc. are not limited to the embodiments described above and shown in the drawings, and may be modified in various ways without departing from the spirit thereof.

As described above, the present invention can reliably prevent the danger of putting one's hands into the rotating dehydration tank by using the so-called lid lock function, and this function can be reliably achieved even if the power to the device is cut off. Furthermore, the front-to-back relationship of each part can be secured with a relatively free dimensional relationship, increasing the reliability of operation and making dimensional control extremely easy.Furthermore, the brake shoe also serves as a rotation detection function. This reduces the number of components in the rotation detection mechanism, and since the brake shoe returns to its original position when the rotation stops, it is possible to automatically release the lock when the rotation stops, and other excellent effects can be obtained. It is possible.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal sectional view of a dehydrator, and FIG. 2 is shown along the line ■-■ in FIG. 65'
Fig. 3 is an enlarged side view of part A in Fig. 1;
FIG. 4 is an enlarged exploded perspective view of section A in FIG. 1. In the figure, 1 is a dehydrator, 4 is a dehydration tank (rotating body), 6 is a motor, 9 is a brake drum, 10 is a brake shoe, 11 is a brake piece, 14 is a braking device, 20 is a hinge, 21 is an opening/closing lid, 22 is a board, 23 is a locking piece, 24 is a lever (brake control member), 25 is an operating rod, 26 is a control wire, 27 is a claw piece, 31 is a push button (operating member), 33 is an operating device, and 34 is a third One lock lever 138 is a switch, 4
0 is a second lock lever (lock device), 43 is an actuation wire, 45 is a lever bar, and 50 is an actuation device.

Claims (1)

[Claims] 1 A braking device consisting of a rotating body rotationally driven by a motor, a brake drum provided to rotate together with the rotating body, and a brake shoe provided so as to be able to approach and separate from the brake drum, An opening/closing lid provided to open and close the upper opening of the outer box provided, a locking piece interlocked with the opening/closing operation of the opening/closing lid, and a locking piece that locks the opening/closing lid to a closed state. The first lock lever and the locking piece have a brake control member provided so as to be independently displaceable, and an operation member, and by displacing the brake control member with the operation member, the first lock lever is secured. an operating device that releases the lock lever from the locking state with the locking piece and starts braking by the braking device, and a friction force generated between the brake drum and the brake shoes when the braking device brakes the rotating body. an actuating device that is displaced by the actuating device; and the first locking lever is independently displaced by the displacement operation of the actuating device, and locks the locking piece that is released from the locking with the first lock lever. A safety device for an opening/closing lid, comprising a second lock lever for keeping the opening/closing lid in an open state.