JP2504102Y2 - Washing machine clutch device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a clutch device used in a washing machine, and more particularly to a dog clutch device for transmitting and disconnecting rotation coaxially.

[Conventional technology]

Such a dog clutch device is used, for example, in a one-tank type fully automatic washing machine, and will be described with reference to FIGS. 7 and 8 in which it is arranged in an outer box (not shown) of the washing machine. Inside the water receiving tank (25), a washing / dehydrating tank (2) further provided with rotary blades (6) is arranged.
A dehydration shaft (1) projecting downward is fixed to the rotary blade (6), and a washing shaft (5) rotatably pierced through the rotary blade (6) coaxially with the dehydration shaft (1) is fixed to the rotary blade (6).

A motor (22) is disposed below the water receiving tank (25), and a pulley (23) fixed to the motor (22) is fixed to the washing shaft (5) via a V belt (24) (7). )
Connect with.

The rotation of the motor (22) is controlled by the dehydration shaft (1) and the washing shaft (5).
A clutch device (3) having a projecting claw (4) is fixed to the spin-drying shaft (1) as a clutch device for transmitting to the washing device, while the washing shaft (5) slides up and down via a key (36). A clutch piece (37) is provided, and a claw (38) that meshes with the claw (4) is provided on the clutch piece (37) in a protruding manner.

In the figure, (39) is connected to an electromagnet (solenoid) (42),
An operation lever for moving the clutch piece (37) up and down is shown. The operation lever (39) is formed into an arc shape by bifurcating the tip as shown in FIG. 8, and the operation piece ( Four
(0) is projected inward, and this operation lever (3
The arcuate portion of the tip of 9) was set along the outer periphery of the clutch piece (37), and the operating piece (40) was engaged in the guide groove (41) formed in the clutch piece (37).

 In the figure, (20) indicates a bearing.

 Next, the operation will be described.

For washing, water is supplied into the water receiving tank (25) and the washing / dehydrating tank (2), and the electromagnet (42) is energized to adsorb it.

As a result, the operation piece (40) at the tip of the operation lever (39)
Moves downward, and the clutch piece (3
7) is pushed down along the washing shaft (5), and in this state, the claw (38) of the clutch piece (37) and the clutch piece (3)
The engagement with the claws (4) of the above is broken.

Then, after the specified amount of water is supplied, the motor (22)
By energizing and rotating it, the rotation of the motor (22) is transmitted to the washing shaft (5) via the pulley (23), V belt (24) and pulley (7), and the washing shaft (5) is By rotating, the rotary blade (6) fixed to this also rotates and washing is performed.

After the washing is completed, to carry out dehydration, the electromagnet (42) is de-energized to release the adsorption. As a result, the operation piece (40) at the tip of the operation lever (39) moves upward, and the clutch piece (37) is pushed up through the guide groove (41), and as a result, the claw (38) of the clutch piece (37). ) And the claw (4) of the clutch piece (3)
Meshes with.

If the motor (22) is continuously rotated in one direction in this state, the rotation of the motor (22) is transmitted to the washing shaft (5) via the pulley (23), the V belt (24) and the pulley (7). , The washing and dewatering tub fixed to the dewatering shaft (1) by being transmitted to the dewatering shaft (1) through the key (36) of the washing shaft (5), the clutch piece (37) and the clutch piece (3) ( 2)
Also rotates.

In this way, in the dehydration step, the washing / dehydrating tub (2) is rotated, and the water contained in the laundry inside is discharged to the water receiving tub (25) by centrifugal force.

[Problems to be solved by the device]

In the clutch device shown in FIGS. 7 and 8, as a member for moving the clutch piece attached to the washing shaft up and down,
Since the operating lever is used and the operating piece at the tip is always fitted inside the guide groove formed in the clutch piece, when the clutch piece also rotates with the rotation of the washing shaft, its rotational force is directly applied to the operating piece. As a result, the switching is not smoothly performed at the time of switching the clutch, and the operation lever is often overloaded and the drive source for operating the operation lever is also often overloaded.

An object of the present invention is to provide a clutch device for a washing machine, which eliminates the disadvantages of the conventional example, makes the switching operation of the clutch smooth, and prevents the drive source from being overloaded particularly when the clutch is disengaged. is there.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a washing machine clutch device for transmitting and disconnecting a washing shaft for rotating a rotary blade and a dewatering shaft for rotating a washing and dewatering tub coaxially provided with the washing shaft. A fixed clutch piece provided on the shaft, a movable clutch piece provided on the washing shaft so as to be displaceable in the axial direction thereof, and a movable clutch piece provided near the movable clutch piece and moving in a direction perpendicular to the axial direction of the washing shaft. A long groove-like engagement in which the main operating lever and the sub operating lever that push the movable clutch piece upward and downward in the axial direction and the engaging protrusion that is connected to the main operating lever and that is provided on the anti-coupling side are formed in the sub operating lever. An interlocking shaft that slidably fits in the recess and is interposed between the main operating lever and the sub operating lever to move the main operating lever and the sub operating lever in opposite directions, and the main operating lever as a movable clutch piece. Forward, backward The present invention is provided with a drive source for driving.

[Action]

According to the present invention, an electromagnet (solenoid) is used as a drive source.
Is energized, the main operating lever connected to it is attracted and moves, and as a result, the sub operating lever projects toward the one side of the movable clutch via the interlocking shaft and comes into contact with this, at this time, Is pushed by the movable clutch piece against the elastic force of the spring.However, since the engaging projection of the interlocking shaft is slidable in the long groove-shaped engaging concave portion formed in the slave operation lever, The pressing force from one side of the clutch is not absorbed here and is not transmitted to the drive source via the interlocking shaft and the main operating lever.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a vertical sectional front view showing an embodiment of a clutch device for a washing machine according to the present invention, FIG. 2 is a vertical sectional front view of an essential portion of the same, and FIG. 3 is a plan view of the same as shown in FIG. The same components as those in the conventional example are designated by the same reference numerals.

The clutch device of the present invention is also used in a single-tub type fully automatic washing machine, and like the conventional example shown in FIG. 7, a water receiving tub (not shown) disposed in an outer box (not shown) of the washing machine. A washing / dehydrating tub (2) having a rotary vane (6) provided inside is disposed in the inside of (25), and the washing / dehydrating tub (2) penetrates the water receiving tub (25) and projects downward. The dehydration shaft (1) is fixed, and the rotary shaft (6) is fixed with a tip shaft (5) which is coaxial with the dehydration shaft (1) and rotatably extends therethrough.

A motor (22) is disposed below the water receiving tank (25), and a pulley (23) fixed to the motor (22) is fixed to the washing shaft (5) via a V belt (24) (7). )
Connect with. In the figure, (20) indicates a bearing.

As a clutch device, a fixed clutch piece (3) is provided on a dehydration shaft (1) which is a driven shaft, and a washing shaft (5) which is a drive shaft.
The movable clutch piece (8) is provided on the fixed clutch piece (3), and the fixed clutch piece (3) is provided with a claw (4) protruding downward.

Further, the support member (1) in the shape of a rectangular tube is located below the fixed clutch piece (3) and is attached to the washing shaft (5) by the key (16).
2) is fixed, a substantially V-shaped support groove (13) is formed on one side (right side in the illustrated example) of this support member (12), and a spring engagement is formed on the other side (left side in the illustrated example). The stop hole (14) was provided horizontally.

In the figure, (8) shows a movable clutch piece attached to the peripheral surface of the support member (12), which has a planar outer shape of the support member (1).
It is formed in a substantially rectangular shape similar to that of 2), and is formed in a ring shape having a square hole (8a) for engaging with the support member (12) in the center.

Then, one side (right side edge in the illustrated example) of the square hole (8a) is inserted into a support groove (13) formed in the support member (12) and loosely fitted therein, and the other side left edge is formed. Is the locking protrusion (1
1) is projected, and this locking projection (11) and spring locking hole (14)
A compression spring (15) is mounted in between to support the other side of the square hole (8a) of the movable clutch piece (8) by the compression spring (15).

A claw (9) is projected on the upper surface of the movable clutch piece (8) on the side where the compression spring (15) is arranged, and a projecting piece (10) is projected outward from the claw (9).

In the figure, (17) is an operating portion arranged to face the side where the compression spring (15) of the movable clutch piece (8) is mounted, that is, near the movable clutch piece, and for operating the movable clutch piece (8). This is composed of a main operating lever (18) housed in the clutch operating case (17a), a sub operating lever (19), and an interlocking shaft (28) connecting both levers (18) (19). It

As shown in the exploded perspective view of FIG. 4, the main operation lever (18) is formed with a mountain-shaped projection (18a) at its tip, and an engaging recess (18b) with the interlocking shaft (28) is formed midway. The insertion hole (3) has a tip protruding from the tip of the clutch operating case (17a) and a base end formed in the clutch operating case (17a).
1) is inserted and is axially attached to the drive shaft of the electromagnet [solenoid] (21), and one end is fixed to the rear part of the clutch operation case (17a) by the retaining ring (30) below in the clutch operation case (17a). It is slidably stored to the left and right via a spring (27).

The spring (27) is biased so as to move the main operating lever (18) in a direction projecting from the case (17a) (rightward in FIG. 2).

Similarly to the main operation lever (18), the sub-operation lever (19) also has a chevron-shaped projection (19a) at the tip and is provided with an engaging recess (19b) with the interlocking shaft (28). Mating recess (19b)
Was formed in the shape of a long slot having a length (2a) about twice the length (a) of the protrusion (28c) protruding from the interlocking shaft (28) described later.

And, this slave operation lever (19) is the main operation lever (1
8) and the peaks of the chevron-shaped protrusions (18a) (19a) face each other, so that the main operating lever (1
8), one end of which is provided with a retaining ring (30) so that the tip projects from the tip of the case (17a).
a) It is housed in the case (17a) slidably to the left and right through a spring (26) fixed to the rear part. The spring (26) is biased to move the slave operation lever (19) in a direction projecting from the case (17a) (rightward in FIG. 2).

The interlocking shaft (28) is formed by projecting projecting pieces (28b) (28c) at a symmetrical position of 180 degrees in a direction orthogonal to the axial direction from substantially the center of the longitudinal direction of the main shaft (28a). (28
b) and (28c) are both cylindrical and the axial direction is the main axis (28a)
It was formed so as to be parallel to the axial direction of.

The main shaft (28a) of the interlocking shaft (28) is rotatably attached to the case (17a) with the pin (29), and the main operation lever (18) is attached.
And the slave lever (19) and the lower protrusion (28
b) into the engaging recess (18b) of the main operating lever (18) and the upper projection (28c) into the engaging recess (19b) of the secondary operating lever (19).
Insert each inside. This allows the main operating lever (18)
And the slave operation lever (19) are connected to each other via an interlocking shaft (28) so as to slide in opposite directions.

 Next, the operation will be described.

For washing, water is supplied into the water receiving tank (25) and the washing / dehydrating tank (2), and the electromagnet is energized to adsorb it.

As a result, the clutch operation case (17) of the operation section (17)
The main operating lever (18) in (a) moves to the left in FIG. 5 against the elastic force of the spring (27), and along with this, the interlocking shaft (28) fitted in the engaging recess (18b). ) Piece (28b)
Rotates to the left around the main shaft (28a) and moves. As a result, the protruding piece (28c) protruding to the opposite side of the protruding piece (28b).
Moves to the right in the direction opposite to the protruding piece (28b), the force that pushes the secondary operation lever (19) to the left is released, and the secondary operation lever (19) moves to the right due to the elasticity of the spring (26). The projection (19a) projects from the tip of the clutch operation case (17a) by sliding to.

Then, after the specified amount of water is supplied, the motor (22)
By energizing and rotating it, the rotation of the motor (22) is transmitted to the washing shaft (5) through the pulley (23), the V belt (24) and the pulley (7), and the washing shaft (5) The support member (12) attached via the key (16) rotates.

At this time, when the claw (9) of the movable clutch (8) mounted on the support member (12) is in mesh with the claw (4) of the fixed clutch piece (3), as shown in FIG. The protrusion (10) comes into contact with the protrusion (19a) of the slave operation lever (19), and the protrusion (19a) is pressed against the protrusion (10) against the elasticity of the spring (26). It does not completely project.

Therefore, in this state, the protrusion (28c) is engaged with the engagement recess (19a).
Since it slides inside and does not contact the slave operation lever (19), the pressing force from the protruding piece (10) side is absorbed by the gap formed by the engagement recess (19a) and the spring (26), Via the interlocking shaft (28) and the main operating lever (18), the electromagnet (2
It does not reach up to 1) and the electromagnet (21) is not overloaded.

As the movable clutch piece (8) rotates with the rotation of the support member (12), the projecting piece (10) abuts the slave operation lever (19) and resists the elastic force of the compression spring (15). The elastic force of (26) pushes the compression spring (15) downward to the bottom dead center or above, and the reaction force of the compression spring (15) causes the protrusion (1) to engage with the support groove (13) as a fulcrum.
The movable clutch piece (8) is lowered to the position where the (0) and the slave operation lever (19) do not come into contact with each other (see FIG. 6). In this state, the slave operation lever (19) further projects due to the elasticity of the spring (26).

In this way, the engagement between the claw (9) of the movable clutch piece (8) and the claw (4) of the fixed clutch piece (3) is released, and
Slave operation lever (1) with movable clutch piece (8) protruding
9) Click down to a position that does not hit,
In this state, the rotation of the motor (22) is transmitted only to the washing shaft (5), and the rotary blades (6) rotate to perform the washing operation.

After the washing is completed, to carry out the dehydration operation, if the electromagnet (21) is de-energized and the adsorption is released, the main operating lever (18) that has been attracted will protrude due to the elasticity of the spring (27) and will be linked to this. Then, the protruding piece (28b) moves to the right side, and the protruding piece (28c) moves to the left side, and the subordinate operation lever (19) protruding from the operation portion (17)
Move to the case (17a).

When the motor (22) is energized in this state, the rotation of the motor (22) causes the movable clutch piece (8) to rotate together with the washing shaft (5), and the protruding piece (10) contacts the main operation lever (18). While being pushed up to the bottom dead center of the compression spring (15) or more against the elasticity of the compression spring (15), the reaction force of the compression spring (15) moves the engagement part with the support groove (13) as a fulcrum. The clutch piece (8) reaches a position where the claw (9) of the clutch piece (8) and the claw (4) of the fixed clutch (3) mesh with each other and the projecting piece (10) does not contact the main operation lever (18).
Is pushed up (see FIG. 2).

In this way, the rotation of the motor (22) rotates when the movable clutch piece (8) meshes with the fixed clutch piece (3) and the movable clutch piece (8) does not contact the main operation lever (18). (5), transmitted to the dehydration shaft (1) through the movable clutch piece (8) and the fixed clutch piece (3), the washing and dehydrating tub (2) fixed to the dehydration shaft (1) rotates, and centrifugal force is applied. The water contained in the laundry inside due to the water tank (25)
To discharge.

[Effect of device]

As described above, the clutch device of the washing machine of the present invention is
When the operation lever for moving the movable clutch piece protrudes and comes into contact with the movable clutch piece, the pressing force from the side of the movable clutch piece is generated by the long groove-shaped engaging concave portion and the engaging projection and the spring of the interlocking shaft fitted therein. Since it absorbs, the pressing force does not reach the electromagnet that is the drive source of the operating lever, and as a result, the electromagnet can be prevented from being overloaded, and the main operating lever and the sub operating lever can be prevented. With the interlocking shafts that move the and the opposite directions, the main operation lever and the sub operation lever do not contact the movable clutch piece at the same time, and the clutch can be switched smoothly.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of a clutch device for a washing machine of the present invention, FIG. 2 is a vertical sectional front view of an essential part of the same, FIG. 3 is a plan view of the same, and FIG. 4 is an exploded view of the essential part of the same. Perspective view, FIG. 5,
FIG. 6 is a vertical cross-sectional side view showing an operating state, FIG. 7 is a vertical cross-sectional side view showing a conventional example, and FIG. 8 is a plan view of an essential part of the same. (1) …… Dewatering shaft, (2) …… Washing and dewatering tub (3) …… Fixed clutch piece, (4) …… Claw (5) …… Washing shaft, (6) …… Rotor (7) …… Pulley, (8) …… Movable clutch piece (8a) …… Hole, (9) …… Pawl (10) …… Projection piece, (11) …… Locking projection (12) …… Supporting member, ( 13) …… Support groove (14) …… Spring locking hole, (15) …… Compression spring (16) …… Key, (17) …… Operation part (17a) …… Clutch operation case (18) …… Main operating lever, (19) …… Slave operating lever (18a) (19a) …… Protrusions (18b) (19b) …… Engaging recess (20) …… Bearing, (21) …… Electromagnet (22)… … Motor, (23) …… Pulley (24) …… V belt, (25) …… Water receiving tank (26) (27) …… Spring, (28) …… Interlocking shaft (28a) …… Spindle, (28b ) (28c) …… Projection piece (29) …… Pin, (30) …… Retaining ring (31) …… Insertion Hole, (36) …… Key (37) …… Clutch piece, (38) …… Pawl (39) …… Operating lever, (40) …… Operating piece (41) …… Guide groove, (42) …… electromagnet

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yumiko Kauchi 1-1-1, Yamate, Funabashi, Chiba, Japan Funabashi Works, Nippon Kentetsu Co., Ltd. (72) Kazuhiko Yamagami 1-1, Yamate, Funabashi, Chiba No. 1 in the Nippon Kentetsu Co., Ltd. Funabashi Manufacturing Co., Ltd. (56) References: Actually open Sho-51-36264 (JP, U) Actual-open Sho-53-117864 (JP, U)

Claims (1)

(57) [Scope of utility model registration request] 1. A washing machine clutch device for transmitting and disconnecting a washing shaft for rotating a rotary blade and a dewatering shaft for rotating a washing and dewatering tub provided coaxially with the washing shaft, wherein the washing shaft is provided on the washing shaft. A fixed clutch piece, a movable clutch piece provided on the washing shaft so as to be displaceable in the axial direction thereof, and a movable clutch piece provided near the movable clutch piece and movable in a direction perpendicular to the axial direction of the washing shaft. A main operating lever and a sub operating lever that push the clutch piece upward and downward in the axial direction, and a long groove-like engagement that is formed on the sub operating lever and has an engaging projection that is connected to the main operating lever and is provided on the side opposite to the connecting side. An interlocking shaft slidably fitted in the fitting recess and interposed between the main operating lever and the sub operating lever to move the main operating lever and the sub operating lever in mutually opposite directions; and the main operating lever, Movable clutch A clutch device for a washing machine, comprising: a drive source that moves forward and backward with respect to one side.