JPH08238394A - Washing and dehydrating machine - Google Patents

Abstract

PURPOSE: To suppress the generation of impulse noises at the time of locking a clutch lever to a pawl to be engaged at a sleeve and to easily and speedily perform assembly. CONSTITUTION: A pawl 50 to be engaged is formed on an outer cylindrical body 44 connected with the lower end of a clutch spring 41, and a flexible buffering body 52 is attached on the outer periphery of this pawl 50 to be engaged. This buffering body 52 is provided with a flange part 52a and this flange part 52a is integrally molded by double layer molding while being joined with the upper end face of the outer cylindrical body 44.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous drive shaft driven by a motor and a tank shaft for rotating a rotary tank.
The present invention relates to a washing machine for combined use of dehydration, which is released by a clutch spring.

[0002]

2. Description of the Related Art Conventionally, in a washing machine for combined use of dehydration, as is well known, during washing with detergent and rinsing, the stirring body in the rotary tub is rotated in the forward and reverse directions, and during spinning, the rotating tub and the stirring body are unidirectional I try to rotate it. In this case,
Since there is only one motor, it is equipped with a clutch spring for switching the rotational force of this motor, a brake device for restraining the free rotation of the rotary tank during washing, and the like.

FIG. 6 shows a portion provided with these mechanisms. The rotation of a motor (not shown) is transmitted to the drive shaft 1 by a belt transmission mechanism 2, and an agitating shaft 3 having a slightly smaller diameter is integrally and concentrically connected to the upper end of the drive shaft 1. Around the stirring shaft 3, a tank shaft 4 is provided so as to face the end surface of the upper end of the drive shaft 1. The clutch spring 5 is wound around the outer peripheral surface of the drive shaft 1 and the outer peripheral surface of the tank shaft 4. A sleeve 6 is provided on the outer circumference of the clutch spring 5,
The sleeve 6 and the lower end of the clutch spring 5 are connected. Engaged claws 7 are formed on the outer circumference of the sleeve 6.

When the engaged claw 7 is locked by the clutch lever 8, the clutch spring 5 loses its winding tightening action and the connection between the drive shaft 1 and the tank shaft 4 is released, and the rotation of the motor follows the drive shaft 1. Gear mechanism 9 through stirring shaft 3
And is decelerated, and as a result, the stirring body 10 is rotated at a low speed via the output shaft 9a. The engagement of the engaged claw 7 is performed in synchronization with the operation of the brake device 11, and the casing 9 of the gear mechanism 9 is engaged.
a, the driven shaft 9b for tanks, and the rotary tank 12 are stopped.

Further, when the engagement of the engaged claw 7 is released, the braking of the brake device 11 is released at the same time, and the tightening action of the clutch spring 5 is exerted, so that the drive shaft 1 and the tank shaft 4 And the rotation of the motor is transmitted from the drive shaft 1 to the tank shaft 4. In this case, the stirring shaft 3 also rotates integrally. Then, the tank driven shaft 9b integrally connected to the tank shaft 4 rotates, and as a result, the rotary tank 12 and the agitator 1 are rotated.
0 is rotated at high speed. FIG. 7 shows the sleeve 6 portion. The engaged claw 7 is formed over the entire circumference of the sleeve 6, and the clutch lever 8 locks any one of them.

[0006]

However, in the above-mentioned conventional structure, when the brake device 11 performs the stopping operation by opening the lid or the like when the rotary tank 12 rotates, in synchronization with this, the cover of the rotating sleeve 6 is covered. The clutch lever 8 engages with the engaging claw 7. At this time, there was a problem that the clutch lever 8 hits the engaged claw 7 and an impact sound is generated.

As a countermeasure against this, as shown in FIG. 8, it is considered to cover the entire engaged claw 7 of the sleeve 6 from above and below and from the side by a flexible cushioning body 13. In this structure, when the clutch lever 8 moves in the direction of arrow A and engages with the sleeve 6, the tip of the clutch lever 8 has a shock absorber 13.
While pressing and bending this, the engaged claw 7 of the sleeve 6
Lock one of the. As a result, when the clutch lever 8 is locked to the engaged claw 7, the impacts are buffered by the buffer body 13, so that the generation of impact noise can be suppressed.

However, in this case, the work of covering the sleeve 6 with the buffer 13 is extremely troublesome, and it takes a lot of time to assemble the assembly, which may result in a high cost.

The present invention has been made in view of the above circumstances, and an object thereof is to suppress the generation of impact noise when the clutch lever is engaged with the engaged claw of the sleeve and to perform the assembling work. It is an object of the present invention to provide a washing machine for combined use of dehydration, which is easy and quick, and has high assembly reliability.

[0010]

A first means is wound around a drive shaft driven by a motor and a tank shaft for rotating a rotary tank, and the connection / release of the drive shaft and the tank shaft is continued. The clutch spring for performing the operation, the sleeve made of synthetic resin which is connected to one end of the clutch spring and has an engaged claw on the outer periphery, and the engaged claw of the sleeve are locked to release the continuation. The stirring body includes a clutch lever and a brake device for stopping the rotary tank when releasing the continuous connection, and at the time of washing, the stirring body is in a state where the continuous connection is released by the clutch lever and the rotary tank is stopped by the brake device. When rotating, rotating the rotary tub with the clutch lever connected continuously and deactivating the braking device during dewatering, and stopping the rotation of the rotary tub during dehydration. In the case where the coupling is released by a clutch lever and the rotary tank is stopped by a brake device, a flexible cushioning body having a substantially cylindrical shape is provided on the outer periphery of an engaged claw of the sleeve with the sleeve. It is characterized in that it is provided by integral molding (the invention of claim 1).

According to a second means, in the first means, the cushioning body has a flange portion at an end portion in the axial direction, and the flange portion is integrally molded in a form joined to the end surface in the axial direction of the sleeve. It is characterized by that (the invention of claim 2). The third means is characterized in that in the first means, the height of the engaged claws in the sleeve is lowered by a predetermined number (the invention of claim 3). A fourth means is characterized in that, in the first means, the buffer body is made of an elastomer (the invention of claim 4). Fifth
This means is characterized in that, in the second means, the end face in the axial direction of the sleeve is uneven (invention of claim 5).

[0012]

In the first means, the coupling is released by the clutch lever when the rotation of the rotary tank is stopped during dehydration. That is, the clutch lever engages with the sleeve. At this time, a large collision noise may occur, but in the first means, since the flexible cushioning body exists on the outer periphery of the engaged claw, the tip end of the clutch lever bends the cushioning body. Even though it is not, one of the engaged claws of the sleeve will be locked. As a result, those bumps are buffered by the buffer, and thus it is possible to suppress the generation of impact noise. Moreover, since the shock absorber is integrally formed with the sleeve, the shock absorber can be handled as an integral part of the sleeve during assembly, and the shock absorber can be assembled to the sleeve easily and quickly. , Assembling reliability is also high.

In the second means, the cushioning body has a flange portion at the axial end portion, and the flange portion is integrally formed in such a manner that it is joined to the axial end surface of the sleeve, The joint area becomes wider and the integral relationship between the two becomes stronger. As a result, there is no risk that the cushioning body will be displaced with respect to the outer circumference of the engaged claw of the sleeve, and the effect of suppressing the generation of impact noise will be further enhanced. In the third means, the height of the engaged claws in the sleeve is lowered by a predetermined number, so that the height of the engaged claws is higher than the height of the engaged claws. The span between the engaged claw and the abutment part of the claw becomes longer, which makes it easier for the cushioning body to flex, the clutch lever can be reliably locked to the engaged claw, and the force required for the locking is small. I'm done.

In the fourth means, since the cushioning body is made of an elastomer, it is rich in flexibility and has excellent wear resistance, the effect of suppressing impact noise is further improved, and the service life is extended. . In the fifth means, since the axial end surface of the sleeve is uneven,
When the buffer body is integrally molded with the sleeve by so-called double molding of synthetic resin, the joint strength between the end surface of the sleeve and the flange portion of the buffer body is increased, and the integral relationship between the two is further strengthened.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. Reference numeral 21 is a water receiving tank provided in the outer box 22, 23 is a rotating tank arranged in the water receiving tank 21, and 24 is an agitator arranged in the rotating tank 23. On the other hand, 25 is a mower disposed on the outer bottom of the water receiving tank 21.
Similarly, reference numerals 26 and 26 denote control mechanism portions arranged on the outer bottom portion of the water receiving tank 21, and the control mechanism portion 26 is provided with a clutch, a brake device and the like.

FIG. 3 schematically shows the structure of the control mechanism portion 26. In FIG. 3, 27 is a drive shaft integrated with a pulley 28, which is shown in FIG. As described above, the rotational force of the motor 25 is applied by the transmission mechanism 31 including the pulley 28, the pulley 29 connected to the rotating shaft 25a of the motor 25, and the belt 30. ing. Reference numeral 32 denotes a hollow tank shaft, which is provided so as to face the drive shaft 27 in the axial direction.

Reference numeral 33 denotes a hollow tank driven shaft, which is integrated with the tank shaft 32. The connecting portion between the tank driven shaft 33 and the tank shaft 32 is formed to have a large diameter. The gear case 34 is composed of. The tank driven shaft 33 is directly connected to the rotary tank 23. Therefore, the tank shaft 32, the gear case 34, the tank driven shaft 33, and the rotary tank 23 rotate integrally. Reference numeral 35 is a stirring shaft, which is directly connected to the drive shaft 27 and is inserted through the tank shaft 32. The stirring shaft 35 is an input shaft of a reduction gear mechanism 36 provided in the gear case 34. And this gear mechanism 3
An agitating driven shaft 37 as an output shaft of 6 projects into the rotary tank 23 through the inside of the tank driven shaft 33,
The stirring body 24 is connected and supported by the protruding end portion.

The gear case 34 includes a brake device 38.
It also serves as the brake drum of this gear case 34
A break band 40 to which a break shoe 39 is fixed is attached to the outer peripheral surface of the.

On the other hand, 41 is a clutch spring,
This is its upper part 41a and lower part 41b (see FIG. 4)
Are respectively wound around the drive shaft 27 and the tank shaft 32 around their outer peripheral surfaces. This clutch spring 4
1 is provided with a sleeve 42.

The sleeve 42, as shown in FIG.
The inner cylinder 43 is made of synthetic resin, the outer cylinder 44 is also made of synthetic resin, and the slip ring 45. The inner cylindrical body 43 has a large number of ribs 46 extending in the vertical direction on the inner peripheral surface thereof, and the clutch spring 41 is housed in each tip edge of the rib 46. A groove-shaped fixing portion 47 for fixing one end portion 41c of the clutch spring 41 is formed at the lower end portion of the inner cylindrical body 43, and the upper end portion has a concave portion 4 within a predetermined angle range.
8 is formed, and the rising portion in the direction of the arrow A in the recess 48 serves as the loosening restricting portion 49. Then, the clutch spring 41 has one end portion 41c.
Is fitted and fixed to the fixing portion 47, and the other end portion 41d bent outward is disposed in the concave portion 48 and provided on the inner peripheral surface of the inner cylindrical body 43.

Further, the outer cylindrical body 44 has a large number of engaged claws 50 formed on the outer peripheral surface thereof, and further, a groove-shaped fixing portion 51 is formed on the inner peripheral surface thereof. And this outer cylinder body 44
Is loosely rotatably fitted on the outer peripheral surface of the inner cylindrical body 43.

The slip ring 45 has an annular shape, and one end portion 45a is bent outward. The slip ring 45 is wound around the outer peripheral surface of the inner cylindrical body 43 in a tightly wound state, and in this state, the one end portion 45a is fitted and fixed to the fixing portion 51 of the outer cylindrical body 44. The slip ring 45 always prevents relative rotation between the inner cylinder body 43 and the outer cylinder body 44 via the slip ring 45 (integrated), but the other end of the clutch spring 41 is The portion 41d is the looseness restricting portion 49 of the inner cylindrical body 43.
After abutting against the inner cylindrical body 43, the inner cylindrical body 43 is moved by the movement of the other end portion 41a.
Is set so as to have a winding tightening force that allows the rotation.

Now, the outer cylinder body 4 of the sleeve 42
4, a flexible cushioning body 52 having a cylindrical shape is integrally formed. That is, the cushioning body 52 has an inwardly directed flange portion 52a at its axial end portion (upper end portion), and this flange portion 52a is an outer cylinder that is the axial end surface of the sleeve 42. It is integrally molded by, for example, double molding in a form of being joined to the upper end surface 44a of the body 44. This double molding is the following molding method. The outer cylinder body 44 formed in advance is housed in a predetermined mold (having a cavity matching the shapes of the outer cylinder body 44 and the buffer body 52). In this case, the upper end surface 44a of the outer cylindrical body 44 faces the inside of the cavity. Then, a melted elastomer raw material (synthetic rubber, polyethylene, etc.) is poured into the mold to solidify it. At this time, the elastomer raw material is joined and fixed to the upper end surface 44a of the outer cylindrical body 44, and thus integrally molded. In this case, the upper end surface 44a of the outer cylindrical body 44 is formed in advance in the form of fine irregularities, and the bonding strength is high.

Reference numeral 53 is a clutch lever, which is a sleeve
It is configured such that it can be engaged and disengaged with one of the locked claws 50 of the bush 42 via the buffer body 52.

During dewatering, braking of the tank shaft 32 by the brake device 38 is released, and one end portion 41c of the clutch spring 41 by the clutch lever 53 is released.
Also release the fixation to, in this state by the motor 25,
The drive shaft 27 is rotated. Due to the rotation of the drive shaft 27, the portion 41 of the clutch spring 41 on the drive shaft 27 side is
b is wound around the drive shaft 27, and the portion 41a of the clutch spring 41 on the tank shaft 32 side is wound around the tank shaft 32. As a result, the tank shaft 32 is in a continuous state with the drive shaft 27 and integrally rotates. In this case, since the stirring shaft 35 is originally integrated with the drive shaft 27, the tank shaft 32 and the stirring shaft 35 rotate integrally with the drive shaft 27. As a result,
The rotary tank 23 and the stirring body 24 rotate integrally.

During washing such as detergent washing or rinsing, the tank device 3 is operated by the brake device 38.
The brake is applied to the clutch lever 53 at the same time.
Is operated in the direction of the arrow Y in FIG. The clutch lever 53 flexibly deforms the buffer body 52 while
The engaged claw 50 of the sleeve 42 is locked via the
reference). As a result, the one end portion 4 of the clutch spring 41 is
1c is fixed. When the motor 25 is rotated in the normal or reverse direction in this state, the drive shaft 27 and the stirring shaft 35 are also rotated in the normal or reverse direction. However, since the one end portion 41c of the clutch spring 41 is fixed, the clutch spring 41 is driven. There is no winding tightening around the shaft 27, and therefore the tank shaft 32
However, the clutch spring 41 will not be tightened. As a result, the forward / reverse rotation of the drive shaft 27 is not transmitted to the tank shaft 32, only the stirring shaft 35 integral with the drive shaft 27 is forward / reverse rotated, and the rotation thereof is decelerated by the reduction gear mechanism 36. Then, the stirring body 2 is driven through the stirring driven shaft 37.
4 is transmitted. As a result, the stirring body 24 rotates forward and backward.

Further, in the washing machine for both dehydration and use, when the lid 54 (see FIG. 2) is opened while the rotary tub 23 is rotating (during dehydration), the brake device 38 is restrained and the clutch lever 53 causes the arrow Y to move. It is designed to be operated in the direction. In this case as well, the clutch lever 53 is configured to engage with the engaged claw 50 of the rotating sleeve 42 via the buffer body 52 while pressing and bending the buffer body 52. There is. Thus, when the user opens the lid 54 during dehydration, the rotation of the rotary tank 23 can be stopped.

In this embodiment, when the lid 54 is opened during dehydration, the clutch lever 53 causes the sleeve 42 to move.
The engaging operation is performed on the engaged claw 50 of. At this time,
Although a large collision noise may occur, according to the present embodiment, since the flexible cushioning body 52 exists on the outer periphery of the engaged claw 50, the tip end portion of the clutch lever 53 is located at the cushioning body 52.
One of the engaged claws 50 of the sleeve 42 is locked while bending the. As a result, those impacts are buffered by the buffer body 52, so that the generation of impact noise can be suppressed.

Moreover, since the cushioning body 52 is integrally formed with the sleeve 42, the cushioning body 52 can be handled as an integral body with the sleeve 42 at the time of assembly, and it is not necessary to assemble the cushioning body to the sleeve 42. Assembling work is easy and quick, and the assembling reliability is high.

Further, according to this embodiment, the buffer 52 is
A flange portion 52a is provided at an end portion in the axial direction, and the flange portion 52a is integrally formed so as to be joined to the upper end surface 44a of the outer cylindrical body 44 which is the end surface in the axial direction of the sleeve 42. The area is widened, and the unity between the two becomes stronger. As a result, the buffer body 52 becomes the sleeve 4
There is no possibility of displacement with respect to the outer circumference of the second engaged claw 50, and a further effect is exerted in suppressing the generation of impact noise.

In this case, the upper end surface 44a of the outer cylinder 44 is
The outer cylinder 44 of the sleeve 42 is formed in advance because of the uneven shape.
On the other hand, when the buffer body 52 is integrally molded by so-called double molding of synthetic resin, the joint strength between the upper end surface 44a of the outer cylindrical body 44 and the flange portion 52a of the buffer body 52 becomes strong,
The united relationship between the two becomes stronger.

In particular, according to the present embodiment in which the buffer body 52 is made of an elastomer, the cushioning body 52 is rich in flexibility and has excellent wear resistance. As a result, the effect of suppressing impact noise is further improved and it is used. The life will be extended. Next, FIG. 5 shows a second embodiment of the present invention. In the second embodiment, the heights of the engaged claws 61 are lowered by a predetermined number, in this case, by every other. The difference is that it is different from the first embodiment.
According to the second embodiment, as compared with the case where the height of the engaged claws is uniformly high, the span between the abutting portions of the buffer body 52 and the toes of the engaged claws 61 (reference SP). ) Becomes longer, which makes it easier for the cushioning body 52 to flex, the clutch lever 53 is reliably locked to the engaged pawl 50, and the force required for the locking is small. The present invention is not limited to the above-described embodiments, and the sleeve 42 may be formed integrally with the inner cylinder body 43 and the outer cylinder body 44 without the slip ring 45, for example.

[0033]

As is apparent from the above description, the present invention can obtain the following effects. According to the invention of claim 1, when the clutch lever is locked to the engaged claw, the impacts thereof are buffered by the buffering body, so that the generation of impact noise can be suppressed, Moreover, since the shock absorber is integrally formed with the sleeve, the shock absorber can be handled as an integral part of the sleeve during assembly, and the shock absorber is not required to be assembled to the sleeve, so that the assembling work can be performed easily and quickly. It can be performed and the assembly reliability is high.

According to the second aspect of the present invention, the shock absorber has the flange portion at the end portion in the axial direction, and the flange portion is integrally formed so as to be joined to the end surface in the axial direction of the sleeve. , The joint area is widened, and the integral relationship between the two is strengthened. As a result, there is no risk that the cushioning body will be displaced with respect to the outer circumference of the engaged claw of the sleeve, and the effect of suppressing impact noise is further enhanced. According to the third aspect of the present invention, the height of the engaged claws in the sleeve is reduced by a predetermined number, so that the height of the engaged claws is higher than the height of the engaged claws. The span between the contact part of the engaging claw and the tip of the claw becomes longer,
As a result, the cushioning body is easily bent, the clutch lever is reliably locked to the engaged claw, and the force required for the locking is small.

According to the fourth aspect of the present invention, since the buffer body is made of an elastomer, it is rich in flexibility and excellent in wear resistance, the impact noise suppressing effect is further improved, and the service life is long. Also becomes longer. According to the invention of claim 5, since the end face in the axial direction of the sleeve is uneven, the end face of the sleeve and the end face of the sleeve are integrally formed with the sleeve by so-called double molding of synthetic resin. The joint strength between the shock absorber and the flange portion is increased, and the integral relationship between the two is further strengthened.

[Brief description of drawings]

FIG. 1 is a perspective view of a sleeve portion showing a first embodiment of the present invention.

FIG. 2 is a side view of a washing machine for combined use of dehydration.

FIG. 3 is a vertical sectional side view of a control mechanism section.

FIG. 4 is an exploded perspective view of a sleeve portion.

FIG. 5 is a view corresponding to FIG. 1 showing a second embodiment of the present invention.

FIG. 6 is a view corresponding to FIG. 3 showing a conventional example.

FIG. 7 is a view equivalent to FIG.

FIG. 8 is a diagram corresponding to FIG. 1 showing a reference example.

[Explanation of symbols]

23 is a rotary tank, 24 is a stirrer, 25 is a motor, 26 is a control mechanism section, 27 is a drive shaft, 32 is a tank shaft, 33 is a tank driven shaft, 35 is a stirring shaft, 36 is a reduction gear mechanism, and 38 is Brake device, 41 is clutch spring, 42 is sleeve,
44 is an outer cylindrical body, 44a is an upper end surface (end surface), 50 is an engaged claw, 52 is a buffer, a 52a flange portion, 53 is a clutch lever, and 61 is an engaged claw.

Claims (5)

[Claims] 1. A clutch spring wound around a drive shaft driven by a motor and a tank shaft for rotating a rotary tank for connecting and disconnecting the drive shaft and the tank shaft, and a clutch spring of the clutch spring. A synthetic resin sleeve that is connected to one end and has an engaged claw on the outer circumference, a clutch lever that releases the continuous engagement by locking the engaged claw of the sleeve, and A brake device for stopping the rotary tank is provided, and when washing, the agitator is rotated in a state in which the continuous connection is released by the clutch lever and the rotary tank is stopped by the brake device, and the clutch lever is used for dehydration. When rotating the rotating tank with continuous operation and without stopping the braking device and stopping the rotation of the rotating tank during dehydration, use the clutch lever to In the one in which the joint is released and the rotary tank is stopped by a brake device, a substantially cylindrical flexible cushioning body is integrally formed with the sleeve on the outer periphery of the engaged claw of the sleeve. A washing machine that also serves as a dehydrator. 2. The shock absorber has a flange portion at an end portion in the axial direction, and the flange portion is integrally molded in a form of being joined to an end surface in the axial direction of the sleeve. Washing machine for combined use of dehydration. 3. The washing machine for combined use of dehydration according to claim 1, wherein the engaged claws in the sleeve are lowered in height at predetermined intervals. 4. The washing machine for combined use of dehydration according to claim 1, wherein the buffer body is made of an elastomer. 5. The washing machine for combined use of dehydration according to claim 2, wherein the end face in the axial direction of the sleeve is uneven.