JP2530417Y2 - Washing machine lid opening and closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a lid opening and closing device for a washing machine.

[Conventional technology]

Among the washing machines, for example, a stirring type fully automatic one-tank type washing machine has, as shown in FIG. 12, a vertically long stirring blade (5a) radially arranged around a hollow cylindrical body having a large number of through holes. The agitator (5) as a rotating blade provided on the side is provided with a dehydration hole (9) on the side wall.
The washing and dewatering tub (4) is disposed at the center of the washing and dewatering tub (4), and the washing and dewatering tub (4) is disposed in a water receiving tub (not shown) disposed in the outer box (1). The upper opening of the washing and dewatering tub (4) is covered with a lid (2) that opens and closes up and down with the rear end as a central axis.

In the figure, (3) is an operation panel, (6) is a drain hose,
(7) indicates a power cord, and (8) indicates a ground wire.

Incidentally, as a structure for attaching the lid (2) to the upper opening end of the washing and dewatering tub (4), the lid (2) is bent upward from the rear end of the lid (2) as shown in FIGS. A substantially C-shaped hinge portion (10) is projected, and at the tip of the hinge portion (10), a mounting hole (10a) into which one end of a torsion coil spring (11) is rotatably inserted is provided.
A support pin (10b) protruded inward of the hinge (10) at a position substantially horizontal to (a).

On the other hand, a panel base (12) provided on the upper surface of the outer box (1)
On the upper part, an arm (13) having a support hole (13a) for inserting a support pin (10b) is provided upright, and a mounting hole (14) for inserting a torsion coil spring (11) is provided.

The torsion coil spring (11) is used to apply a force to the lid (2) to pull it upward.
a) is formed in the middle, and linear operating portions protrude from both ends around the coil portion (11a).

In this way, the end of the lid (2) is pivotally mounted on the panel base (12) by inserting the support pin (10b) into the support hole (13a) of the arm (13), and at the same time, The torsion coil spring (11) having the tip of one operating portion inserted into the mounting hole (14) on the panel base (12) is inserted into the mounting hole (10a) to thereby provide the torsion coil spring ( The force in the opening direction is urged by 11).

In this case, both operating parts are centered on the coil part and the lid (2)
The opening is set so as to have a positional relationship of approximately 90 degrees in the closed state, and the momentum is increased.

In the drawing, (15) shows a rear panel which is located behind the torsion coil spring (11) and is integrally erected from the panel base (12).

By the way, as a method of attaching this torsion coil spring (11) to the hinge part (10) and the panel base (12),
When mounting with the lid (2) closed horizontally as shown in FIG. 14, first insert one end of the torsion coil spring (11) into the mounting hole (14) on the panel base (12), and screw it. From the state where the coil spring (11) rises upward, the other end of the spring (11) is pulled down (in the direction of the arrow) while resisting the elasticity of the spring, and the mounting hole (10a) of the hinge (10) is formed. )
Insert

Separately, when the torsion coil spring (11) is mounted with the lid (2) opened vertically, as shown in FIG. 15, the torsion coil spring (11) is first inserted into the mounting hole (10a) side of the hinge (10). 11) Insert one end of the torsion coil spring (1
The other end of the spring (11) is pulled down against the elasticity downward from the state where 1) is attached to the hinge portion (10) in a substantially horizontal state, and inserted into the mounting hole (14) on the panel base (12). I do.

As described above, when the torsion coil spring (11) is mounted between the hinge portion (10) and the panel base (12), as shown in FIGS. Cover with (16).

[Problems to be solved by the invention]

The torsion coil spring has linear operating parts protruding from both ends from the center coil part, and this operating part rotates around the coil part, so that the elasticity of the spring can be used effectively and it can be operated easily. In order to achieve this, it is desirable to secure the opening of both operating parts to some extent and to increase the momentum of the spring.

When adopting such a torsion coil spring with a large amount of momentum of the spring, it is necessary to provide the rear panel at a position that does not hinder the spring installation, taking into account the momentum at the time of mounting, and tilt the rear panel toward the rear. doing.

Therefore, as shown in FIGS. 16 and 17, after the spring is mounted, an unnecessary space is generated between the spring and the rear panel, and only the rear panel unnecessarily largely protrudes rearward.

Also, when installing the coil spring, one end of the coil spring is pulled down along the rear panel and inserted into the mounting hole on the base panel at the narrow corner where the rear panel and the base panel are joined. Workability is poor and dangerous because the springs are against the elasticity of many springs.

Further, in the case where the hinge portion, the torsion coil spring, or the like is damaged, the repair work is performed by removing the entire upper panel, which is a large-scale operation.

In addition, for example, Japanese Utility Model Publication No. 53-19628 discloses a configuration in which the rear panel is disposed vertically, but in this conventional example, both operating portions of the spring with the lid closed are only about 50 degrees. Not open.

Therefore, the momentum of the spring is small, and it is difficult to smoothly open and close the lid.

The object of the present invention is to solve the above-mentioned disadvantages of the conventional example, and to adopt a torsion coil spring in which a linear operating part projecting from both ends from a center coil part has a positional relationship of about 90 degrees when the lid is closed, An object of the present invention is to provide a lid opening / closing device for a washing machine that can make the entire washing machine compact without the rear panel protruding rearward greatly and can also improve the workability of mounting and repairing work of the torsion coil spring.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a linear operating portion projecting from both ends from a center coil portion to an end of one operating portion of a torsion coil spring having a positional relationship of approximately 90 degrees when the lid is closed. Pivotally attached to the hinge formed at the rear end, the other end of the operating part is projected to the rear of the hinge and pivotally attached to the rear end on the panel base on the top of the washing machine,
In a lid opening / closing device for a washing machine that covers a hinge portion and a torsion coil spring with a panel, a rear panel is located immediately after an operation portion of a torsion coil spring attached to a rear end on a panel base, and an operation portion from above the panel base. The gist of the invention is that the opening is formed by cutting the portion near the torsion coil spring of the rear panel, and the opening is closed by a cover that can be opened and closed.

[Operation] According to the present invention, if the cover is opened to open the opening, and the torsion coil spring is attached to the hinge portion and the mounting hole on the panel base in this state, a torsion coil spring having a large momentum is used. Even in this case, the space for the movement of the torsion coil spring at the time of mounting is ensured at this opening. Therefore, the rear panel can be erected substantially vertically from the outer case without considering the movement space when the coil spring is mounted.

In addition, since the torsion coil spring can be mounted through the opening, the work is easy and the repair can be performed simply by removing the cover and opening the opening.

〔Example〕

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

FIG. 1 is a perspective view showing an embodiment of a lid opening / closing device for a washing machine of the present invention, and FIG. 2 is a perspective view of the washing machine with a cover removed.
The overall configuration of the washing machine and the configuration in which the lid is openably and closably mounted on the panel base by the hinge portion and the torsion coil spring are described in
12 and 13 are the same as those already described with reference to FIGS. 12 and 13, and therefore, the same components in the drawings are denoted by the same reference characters and detailed description is omitted.

In the present invention, the lid (2) is rotatably mounted on the panel base (12) by a hinge coil (10) projecting from the rear end of the lid (2). ) Is provided with a mounting hole (10a) to be inserted, and a support pin (10b) for axially attaching to the panel base (12).
On the other hand, an arm (13) having a support hole (13a) and a mounting hole (14) into which a torsion coil spring (11) is inserted are provided on the panel base (12), and a support pin (10) of the hinge part (10) is provided.
b) is inserted into the support hole (13a) of the arm (13) and the lid (2)
Is attached to the panel base (12) in a freely rotatable manner, and the tip of one operating portion is hinged to the tip of the other operating portion of the torsion coil spring (11) inserted into the hole (14) on the panel base (12). It was inserted into the mounting hole (10a) of the part (10). The mounting hole (14) is located near the rear end on the panel base (12).

In the present invention, the rear panel (15) is erected almost vertically from above the panel base (12) so as to be located immediately behind the operating portion behind the torsion coil spring (11) mounted on the panel base (12) in this way. I do.

The rear panel (15) in the vicinity of the torsion coil spring (11) was cut out in a rectangular shape to form an opening (17), and a cover (18) was removably attached to the opening (17).

The cover (18) has vertical projections (18a) on both sides as shown in FIGS. 3 to 5, while the opening (17) has a projection in FIG. As shown, grooves (17a) into which the protrusions (18a) fit were formed at the left and right opening edges.

Next, a method of attaching the torsion coil spring (11) to the hinge (10) will be described.

First, the cover (18) is detached from the rear panel (15) to leave the opening (17) open, and the torsion coil spring (1) is opened with the lid (2) closed horizontally as shown in FIG.
1) When mounting, attach the tip of one operating part of the torsion coil spring (11) to the mounting hole (1) on the panel base (12).
First, the screw coil spring (11) is inserted into 4) and the screw coil spring (11) is set up.

At this time, the torsion coil spring (11) is attached to the rear panel (15).
Although it is slightly inclined to the side, since the opening (17) is in an open state, the torsion coil spring (11) does not enter the opening (17) and its movement is not hindered.

Further, the work of inserting the torsion coil spring (11) into the mounting hole (14) can be performed through the opening (17), and a wide working space can be secured.

Then, as described above, connect one end to the panel base (12)
Pull down the tip of the other operating part of the torsion coil spring (11) attached above to the lower part in the direction of the arrow to lower the hinge part (1).
Insert it into the mounting hole (10a) of (0).

Next, as shown in FIG. 8, when the torsion coil spring (11) is mounted with the lid (2) opened vertically, the torsion coil spring (1) is inserted into the mounting hole (10a) side of the hinge part (10).
One end of 1) is attached first, and then the other end is pulled down in the direction of the arrow and inserted into the mounting hole (14) on the panel base (12).

In this case, as in the case of FIG. 7, the cover (18) is removed and the opening (17) is opened to perform the work, so that a large space for the mounting work can be secured. When the other end of the torsion coil spring (11) is pulled down, the trajectory drawn by this end protrudes outward from the inner wall surface of the rear panel (15). (17) so that its movement is
It is not hindered by 5).

If the torsion coil spring (11) is mounted between the hinge part (10) and the panel base (12), the protrusion (18a) of the cover (18) should be inserted into the groove (17a) of the opening (17). The cover (18) is fitted into the opening (17) and closed, and the upper part of the hinge part (10) and the torsion coil spring (11) is placed on the upper panel (FIG. 9 and FIG. 10). 16) Cover all together.

When the lid (2) is closed, the cover (18) provided on the rear panel (15) in close proximity to the rear operating portion is substantially parallel to the rear operating portion when the lid (2) is closed. Stand up vertically.

In the first embodiment, the cover (18) is connected to the panel base (1).
Although it is assumed that it can be completely detached completely from 2), the present invention is not limited to this. As shown in FIG. 11 as a second embodiment, a panel base (12) and a cover (19) are Is formed on the thin hinge part (19a) and the cover (1
9) can be formed integrally and continuously from the panel base (12).

In this case, the cover (1
9) opens and closes up and down with respect to the panel base (12). Locking pieces (19b) are protrudingly provided on the upper left and right sides of the cover (19). When the opening (17) is closed by the cover (19), the locking pieces (19b) are opened. The cover (19) is engaged with the inside of the edge of (17) to lock the cover (19) in the opening (17).

The present invention can be applied not only to a single-tub washing machine but also to a lid that covers the upper part of a dewatering tub of a two-tub washing machine.

[Effect of the invention]

As described above, the lid opening and closing device of the washing machine of the present invention does not consider the movement space of the torsion coil spring when the torsion coil spring is attached when the torsion coil spring having a large momentum is used so that the lid can be opened and closed smoothly. Since the rear panel can be arranged at the rear, only the rear panel does not protrude out of the outer box, the depth dimension can be reduced, the entire washing machine can be compacted, the packaging dimensions are reduced, and the logistics are reduced. The amount can also be reduced.

Also, since the torsion coil spring can be mounted through the opening, a large space for the mounting work can be secured, the workability can be improved, and the repair work can be performed through the opening by simply removing the cover. Therefore, there is no need to remove other panels, and service work can be easily performed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a lid opening / closing device for a washing machine according to the present invention, FIG. 2 is a perspective view showing a state in which the cover is removed, and FIG.
FIG. 4 is a front view of the cover, FIG. 4 is a top view of the cover, FIG. 5 is a plan view of the cover, FIG. 6 is a cross-sectional plan view of the opening, FIG. FIG. 9 is a vertical sectional side view showing a state where the lid is closed, FIG. 10 is a vertical sectional side view showing a state where the lid is open, and FIG. FIG. 12 is a perspective view of a stirring type fully automatic one-tank type washing machine, FIG. 13 is an exploded perspective view showing a lid mounting structure, and FIG. 14 is a longitudinal section showing a conventional example when a torsion coil spring is mounted. Side view, FIG. 15 is a longitudinal sectional side view showing another example of the same as the above, FIG. 16 is a longitudinal sectional side view showing a conventional example in a lid closed state, and FIG. 17 is a longitudinal sectional side view showing a conventional example in a lid open state. . (1) ... outer box, (2) ... lid (3) ... operation panel, (4) ... washing and dewatering tank (5) ... agitator, (5a) ... stirring blade (6) ... drain hose, (7) ... Power cord (8) Ground wire, (9) Dehydration hole (10) Hinge, (10a) Mounting hole (10b) Support pin, (11) Torsion coil spring (11a) Coil, (12) ) Panel base (13) Arm (13a) Support hole (14) Mounting hole (15) Rear panel (16) Top panel (17) Opening (17a) Groove, ( 18) Cover (18a) ridge, (19) Cover (19a) Hinge, (19b) Locking piece

Claims (1)

(57) [Scope of request for utility model registration] 1. An end of one operating portion of a torsion coil spring having a linear operating portion projecting from both ends from a center coil portion and having a positional relationship of approximately 90 degrees when the lid is closed is formed at a rear end of the lid. Pivotally attached to the hinged portion, the other end of the operating portion is projected rearward of the hinge portion, and pivotally attached to the rear end on the panel base on the upper surface of the washing machine, and the hinge portion and the torsion coil spring are mounted on the panel. In the lid opening and closing device for a washing machine to be covered, the rear panel is located immediately after the operating part on the side attached to the rear end of the torsion coil spring on the panel base, and is erected substantially vertically from the panel base in parallel with the operating part. A lid opening / closing device for a washing machine, characterized in that an opening is formed by notching a portion near the torsion coil spring of the rear panel, and the opening is closed by a cover that can be opened and closed.