WO2015072014A1

WO2015072014A1 - Mounting/dismounting structure for mounting and dismounting part to and from inner peripheral portion of washing drum, and said part

Info

Publication number: WO2015072014A1
Application number: PCT/JP2013/080910
Authority: WO
Inventors: 直人西浦; 貴志石田; 克己大江
Original assignee: ハイアールアジアインターナショナル株式会社
Priority date: 2013-11-15
Filing date: 2013-11-15
Publication date: 2015-05-21
Also published as: JP6294347B2; JPWO2015072014A1

Abstract

A mounting/dismounting structure (50) for mounting and dismounting a part (20) to and from an inner peripheral portion (1A) of a closed-bottom circular cylindrical washing drum (1) having an inlet/exit opening (8) and a bottom wall (7) which is disposed facing the inlet/outlet opening (8), wherein the part (20) includes a body section (22), a first engagement section (23), and a second engagement section (24). The body section (22) is mounted across between the bottom wall (7) and a balancer (13) which is mounted on the inlet/outlet opening (8) side of the washing drum (1). The first engagement section (23) is provided at the bottom wall (7)-side end (22C) of the body section (22) and engages with the bottom wall (7). The second engagement section (24) is provided at the balancer (13)-side end (22D) of the body section (22), is flexible, and engages with the balancer (13).

Description

Attachment / detachment structure for attaching / detaching parts to / from the inner periphery of the washing tub, and the parts

This invention relates to an attachment / detachment structure for attaching / detaching a component to / from an inner peripheral portion of a washing tub, and the component.

In the washing machine described in Patent Document 1 below, an overflow chamber is formed on the side of the washing tub and bulges outward from the washing tub. And the overflow strainer which partitions off an overflow chamber and a washing tub is detachably attached to the side part in a washing tub. The overflow strainer is vertically long, and a lint filter is provided in the middle.

JP-A-6-285292

In the configuration in which a part (an overflow strainer in the case of Patent Document 1) is attached to and detached from the inner peripheral portion of the washing tub as in the washing machine described in Patent Document 1, it is desired to improve the ease of attaching and detaching the part. For example, when it is necessary to attach / detach a component other than the component in the washing machine in order to attach / detach the component, the attaching / detaching operation becomes troublesome.

The present invention has been made under such background, and an object thereof is to provide an attachment / detachment structure capable of improving the ease of attaching / detaching a component to / from an inner peripheral portion of a washing tub, and the component. .

The invention according to claim 1 is an attachment / detachment structure for attaching / detaching a component to / from an inner peripheral portion of a bottomed cylindrical laundry tub having an entrance through which laundry is taken in and out and a bottom wall disposed opposite to the entrance / exit. The component is provided at the end of the main body portion between the balancer attached to the entrance / exit side of the washing tub and the bottom wall, and at the end of the main body portion on the bottom wall side, A first engagement portion that engages with a bottom wall; and a second engagement portion that is provided at an end portion on the balancer side of the main body portion and has flexibility and engages with the balancer. An attachment / detachment structure for attaching / detaching a component to / from the inner peripheral portion of the washing tub.

According to a second aspect of the present invention, the bottom wall is provided with a first receiving portion that receives the first engaging portion, and the second engaging portion is provided on a surface of the balancer that faces the bottom wall. A second receiving portion for receiving is provided, and the second engaging portion is connected to the main body portion by a hinge structure, and is biased so as to protrude from the main body portion toward the second receiving portion. The attachment / detachment structure according to claim 1, wherein:

The invention according to claim 3 is a claw-like shape connected to the central portion in the longitudinal direction of the main body portion by a hinge structure, and includes a third engaging portion that engages with the inner peripheral portion of the washing tub. The attachment / detachment structure according to claim 1 or 2, characterized in that:

The invention according to claim 4 is a component that is detachably attached to an inner peripheral portion of a bottomed cylindrical laundry tub having an entrance through which laundry is put in and out and a bottom wall disposed opposite to the entrance. A main body portion installed between the balancer attached to the entrance / exit side of the washing tub and the bottom wall, and provided at an end portion on the bottom wall side of the main body portion, and engaged with the bottom wall. A first engagement portion that is provided at an end portion on the balancer side in the main body portion, and has a flexibility and a second engagement portion that engages with the balancer. It is a component that is detachably attached to the inner peripheral portion of the washing tub.

The invention according to claim 5 is characterized in that the second engaging portion is connected to the main body portion by a hinge structure and is urged so as to protrude from the main body portion. It is a part of description.

The invention described in claim 6 is a claw-like shape connected to the central portion in the longitudinal direction of the main body portion by a hinge structure, and includes a third engaging portion that engages with the inner peripheral portion of the washing tub. The component according to claim 4 or 5, characterized in that:

According to the first and fourth aspects of the present invention, in the parts mounted on the inner peripheral part of the washing tub, the main body is in a state of being laid between the balancer on the doorway side and the bottom wall.

When mounting a component on the inner peripheral portion of the washing tub, the second engagement portion is engaged until the main body portion is installed between the balancer and the bottom wall after the first engagement portion of the component is engaged with the bottom wall. After bending, the second engagement portion may be returned to the state before bending and engaged with the balancer. That is, it is possible to save the trouble of removing the balancer from the washing tub and engaging the first engaging portion with the bottom wall, and then reattaching the balancer to the washing tub and engaging the second engaging portion with the balancer. it can.

When removing a part from the inner peripheral part of the washing tub, the first engaging part is removed from the bottom wall after the second engaging part is bent and removed from the balancer, and the entire part is pulled out from the inner peripheral part of the washing tub. . That is, the balancer is removed from the washing tub to remove the second engaging portion from the balancer, the first engaging portion is detached from the bottom wall, and the entire part is pulled out from the inner peripheral portion of the washing tub, and then the balancer is placed in the washing tub. The trouble of re-installing can be saved.

As a result, since the parts can be attached to and detached from the inner peripheral part of the washing tub while the balancer is still assembled in the washing tub, it is possible to improve the ease of attaching and detaching the parts to the inner peripheral part of the washing tub. it can.

According to the invention described in claim 2, since the first receiving portion provided on the bottom wall receives the first engaging portion, the first engaging portion can be reliably engaged with the bottom wall. Moreover, since the 2nd receiving part provided in the surface facing a bottom wall in a balancer receives a 2nd engaging part, a 2nd engaging part can be reliably engaged with a balancer.

Further, by connecting the second engaging portion to the main body portion with a hinge structure and biasing it so as to protrude from the main body portion, the second engaging portion can be bent and engageable with the balancer. it can.

According to invention of Claim 3 and 6, when mounting components in the inner peripheral part of a washing tub, the 3rd engaging part of the center part in the longitudinal direction of a main-body part is engaged with the inner peripheral part of a washing tub. Then, it can prevent that the said center part lifts from the inner peripheral part of a washing tub. On the other hand, when removing the component from the inner peripheral portion of the washing tub, the third engaging portion may be removed from the inner peripheral portion of the washing tub. As described above, high detachability of the component with respect to the inner peripheral portion of the laundry tub can be realized while preventing the central portion of the main body portion from being lifted in a state where the component is mounted on the inner peripheral portion of the laundry tub.

According to the fifth aspect of the present invention, the second engaging portion is connected to the main body portion with a hinge structure and biased so as to protrude from the main body portion, whereby the second engaging portion can be bent and the balancer. Can be engaged.

Drawing 1 is a figure which looked at the longitudinal section of washing tub 1 concerning one embodiment of this invention from the side. FIG. 2 is a front view of the component 20 attached to and detached from the inner peripheral portion 1 A of the washing tub 1. FIG. 3 is a rear view of the component 20. FIG. 4 is a perspective view of the component 20 when viewed from the front upper side. FIG. 5 is a perspective view of the component 20 when viewed from above the back surface. FIG. 6 shows a state in which the component 20 is being attached to and detached from the inner peripheral portion 1 A of the washing tub 1 in FIG. 1. FIG. 7 is a view showing a main part of the washing tub 1 in a state where the component 20 is mounted on the inner peripheral portion 1A.

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

FIG. 1 is a side view of a longitudinal section of a washing tub 1 according to an embodiment of the present invention.

In FIG. 1, the washing tub 1 built in the washing machine 100 is extracted and shown. The washing machine 100 includes a water tub 2 in addition to the washing tub 1.

The water tank 2 is accommodated in a casing (not shown) of the washing machine 100, and is elastically supported by the casing via a plurality of dampers (not shown). The water tank 2 is a hollow body. In the water tank 2 of this embodiment, an opening 3 is formed at the upper end, and a bottom 4 is provided at the lower end. Water (including tap water, bath water, and water in which detergent is dissolved) is stored inside the water tank 2 from the bottom 4 side.

The washing tub 1 is a so-called rotating drum. The laundry tub 1 stores laundry. The washing tub 1 has a bottomed cylindrical shape that is slightly smaller than the water tub 2 and is accommodated in the water tub 2. A center axis 5 (axis passing through the center of the circle of the washing tub 1) 5 extends along the vertical direction (up and down direction in FIG. 1) in FIG. 1, but intersects the vertical direction ( You may extend along the inclination direction with respect to a perpendicular direction, or a horizontal direction. However, in the following description, for the sake of convenience, the vertical direction in FIG. 1 is the top and bottom of the washing tub 1 with reference to the case where the central shaft 5 extends in the vertical direction (when the washing machine 100 is a so-called vertical washing machine). The direction.

The washing tub 1 can rotate around the central axis 5 by receiving a driving force from a motor (not shown).

The washing tub 1 is connected to a substantially cylindrical circumferential wall 6 concentric with the central axis 5 and one end (lower end in FIG. 1) 6A of the circumferential wall 6 so that the hollow portion of the circumferential wall 6 is connected to the one end. And a disk-shaped bottom wall 7 which is closed from the 6A side (lower side in FIG. 1). The circumferential wall 6 and the bottom wall 7 may be integrally formed from the same material. For example, the circumferential wall 6 and the bottom wall 7 may be made of metal such that the circumferential wall 6 is made of metal and the bottom wall 7 is made of resin. It is another part, Comprising: These may combine and the washing tub 1 may be comprised.

The other end portion (upper end portion in FIG. 1) 6B of the circumferential wall 6 is opened upward, and the inner peripheral surface of the circumferential wall 6 in the other end portion 6B constitutes the entrance / exit 8 formed in the washing tub 1. is doing. The entrance / exit 8 is disposed to face the bottom wall 7 in the direction in which the central shaft 5 extends (referred to as the axial direction X). The entrance / exit 8 has a circular shape with the central axis 5 as the center of the circle, and has a smaller diameter than the opening 3 of the water tank 2. The opening 3 and the entrance / exit 8 are in substantially the same position in the axial direction X and communicate with each other. The laundry to be washed by the washing machine 100 is put into and out of the washing tub 1 through the opening portion 3 and the entrance 8 that are in communication.

The inner peripheral surface 6C of the circumferential wall 6 of the washing tub 1 is provided with a plurality of baffles 9 extending in the axial direction X while protruding upward in the radial direction (center axis 5 side) of the inner peripheral surface 6C. The plurality of baffles 9 are arranged at substantially equal intervals in the circumferential direction of the inner peripheral surface 6C. As the laundry tub 1 rotates, each baffle 9 agitates the laundry in the laundry tub 1. A number of through holes 10 that penetrate the circumferential wall 6 in the thickness direction (the radial direction described above) are formed at positions avoiding the baffle 9 on the inner circumferential surface 6C. The water accumulated in the water tub 2 can go back and forth between the water tub 2 and the washing tub 1 through the through hole 10.

The bottom wall 7 integrally includes an annular outer peripheral portion 7A connected to one end portion 6A of the circumferential wall 6 and a central portion 7B located closer to the circular center (center axis 5) than the outer peripheral portion 7A. Yes.

The outer peripheral portion 7A is fitted into the one end portion 6A of the circumferential wall 6 and is fixed to the one end portion 6A by a screw 14.

The central part 7B is arranged so as to be shifted in the axial direction X from the outer peripheral part 7A so as to swell in a direction away from the entrance 8 (downward in FIG. 1). Therefore, the bottom wall 7 is formed with a recess 11 that is recessed in a direction away from the entrance 8. The recess 11 is a space defined by the outer peripheral portion 7A and the central portion 7B, and constitutes an internal space of the washing tub 1 together with the hollow portion of the circumferential wall 6 while communicating with the hollow portion of the circumferential wall 6. . A rotor blade 12 is disposed in the recess 11. The rotary blade 12 is a so-called pulsator, and agitates the laundry in the washing tub 1 by rotating around the central axis 5 by receiving a driving force from a motor (not shown). The bottom wall 7 may also be formed with a through hole having the same function as the through hole 10 of the circumferential wall 6.

In the washing tub 1, the inner peripheral surface 6C of the circumferential wall 6 and the surfaces that define the dent 11 in the bottom wall 7 (the inner peripheral surface 7C of the outer peripheral portion 7A and the upper surface 7D that faces the dent 11 from below in the central portion 7B). However, the inner peripheral part 1A of the washing tub 1 is constituted.

In such a washing tub 1, a balancer 13 is attached to the entrance 8 side. The balancer 13 is for reducing vibration in the washing tub 1 during rotation (particularly during dehydration rotation) (due to unevenness of the laundry in the washing tub 1), and is also called a fluid balancer or a balance box. . The balancer 13 is annular. The balancer 13 is coaxially attached to the end of the circumferential wall 6 of the washing tub 1 on the doorway 8 side (the other end 6B described above). Specifically, a part of the balancer 13 is fitted into the other end 6 B of the circumferential wall 6. A part of the balancer 13 is fixed to the washing tub 1 by screws 15. The outer peripheral surface 13A of the balancer 13 has substantially the same diameter as the outer peripheral surface 6D of the circumferential wall 6. The inner peripheral surface 13B of the balancer 13 has a smaller diameter than the inner peripheral surface 6C of the circumferential wall 6. Therefore, the balancer 13 protrudes from the inner peripheral surface 6C of the circumferential wall 6 to the circle center side (center axis 5 side) over the entire circumferential direction. Therefore, the balancer 13 has a surface (referred to as “opposing surface”, a lower end surface in FIG. 1) 13 C facing the bottom wall 7 from the entrance / exit 8 side in the axial direction X. The facing surface 13C has an annular shape with the central axis 5 as the center of the circle. In the balancer 13, a cavity 16 is provided in a region between the outer peripheral surface 13 A and the inner peripheral surface 13 B, and a liquid for contributing to vibration reduction is accommodated in the cavity 16.

Then, a part 20 described below is detachably mounted on the inner peripheral portion 1A of the washing tub 1.

The part 20 is made of resin, for example. The component 20 is long in the axial direction X, and is installed between the balancer 13 and the bottom wall 7 of the washing tub 1 in the mounted state. The component 20 may function as the baffle 9 described above.

Alternatively, the part 20 may be provided with a flow path 21 extending from the bottom wall 7 of the washing tub 1 toward the entrance / exit 8 (see a thick broken line arrow). In this case, when the rotary blade 12 described above rotates, the water accumulated on the bottom wall 7 side in the washing tub 1 is sent to the flow path 21, and this water rises in the flow path 21 and then enters the inlet / outlet 8 side. To the washing tub 1 (see thick broken line arrow). Thereby, even if there is a small amount of water in the washing tub 1, the water is circulated between the washing tub 1 and the flow path 21 so that the laundry in the washing tub 1 is exposed to water from the entrance 8 side. Thus, efficient washing can be performed.

When providing the flow path 21 in the component 20, a filter (not shown) that captures yarn waste in water may be disposed in the middle of the flow path 21. In that case, the component 20 also functions as a frame that supports the filter.

Hereinafter, description will be made assuming that the flow path 21 is formed in the component 20.

FIG. 2 is a front view of the component 20. FIG. 3 is a rear view of the component 20. FIG. 4 is a perspective view of the component 20 when viewed from the front upper side. FIG. 5 is a perspective view of the component 20 when viewed from above the back surface.

Referring to FIG. 2, the component 20 integrally includes a main body portion 22 having a long cover shape along the axial direction X, a first engagement portion 23 (see FIG. 3), and a second engagement portion 24. Is included.

The main body 22 has a long rectangular shape in the axial direction X when viewed from the front side as shown in FIG. In addition, the main-body part 22 may not be perfect flat form, and a part may be curving. In the main body 22 in a front view, the surface that is seen most greatly is the surface 22 A of the main body 22. At the outer peripheral edge of the front surface 22A in front view, almost the entire region except for the lower end portion is a flange 25 that is bent from the front surface 22A and extends to the back side (the back side in FIG. 2) (see FIG. 3).

As shown in FIG. 3, the overall shape of the flange 25 when viewed from the back side is a substantially U-shape that is upside down. Of the flange 25, the flange 25 A located at the upper end of the main body 22 extends in a direction orthogonal to the axial direction X (the horizontal direction, hereinafter referred to as “orthogonal direction Y”).

As shown in FIG. 3, the most visible surface of the main body 22 in the rear view is the back surface 22 B of the main body 22. In the back surface 22B, the above-described flow path 21 is provided in a region inside the above-described substantially U-shaped flange 25. In relation to the flow path 21, a pair of ribs 26 extending in the axial direction X are integrally provided in the region, and a space between the pair of ribs 26 is the flow path 21. . Strictly speaking, the flow path 21 is a space defined by a pair of ribs 26, a back surface 22 B of the main body 22, and an inner peripheral surface 6 C of the circumferential wall 6 of the washing tub 1 in which the component 20 is mounted ( (See also FIG. 1 and FIG. 7 described later). Each rib 26 does not need to extend straight along the axial direction X in the whole area, and may be bent in the middle.

Further, a tubular boss 40 protruding from the back surface 22B is integrally provided at a position avoiding the flow path 21 on the back surface 22B. The boss 40 functions to position the component 20 in the washing tub 1 (details will be described later). The number of bosses 40 can be set arbitrarily.

Referring to FIG. 4, a communication hole 27 is formed in the lower region of the surface 22 A of the main body portion 22 so as to penetrate the main body portion 22 in the thickness direction and communicate with the lower end portion of the flow path 21. As described above, the water to be sent into the flow path 21 by the rotary blade 12 may enter the flow path 21 from the communication hole 27. Alternatively, the lower end of the flow path 21 may be an open inlet 41 (see FIG. 3), and water may enter the flow path 21 from the inlet 41.

In the upper region of the surface 22A of the main body 22, an outlet 28 is formed which penetrates the main body 22 in the thickness direction and communicates with the upper end of the flow path 21. As described above, the water fed into the flow path 21 by the rotary blades 12 rises in the flow path 21, then flows out of the flow path 21 from the outlet 28, and enters the laundry in the laundry tub 1 on the entrance / exit 8 side. Get off from. A door 29 that opens and closes the doorway 8 may be provided on the surface 22A of the main body 22.

The main body portion 22 extends along the axial direction X in a state where the component 20 is mounted on the inner peripheral portion 1 A of the washing tub 1, and is between the balancer 13 and the bottom wall 7 of the washing tub 1. It is constructed (see FIG. 1).

Based on the state where the component 20 is mounted on the inner peripheral portion 1A of the washing tub 1, the first engagement portion 23 is provided at an end portion 22C (here, the lower end portion) of the main body portion 22 on the bottom wall 7 side. (See FIG. 1). Referring to FIG. 5, the first engaging portion 23 is disposed on each side of the flow path 21 so as to sandwich the flow path 21 at the lower end surface of the main body portion 22, and has a pile shape that is pointed downward. There is no. Note that a flange-like or claw-like positioning part 30 may be provided around the first engagement part 23 at the end 22C of the main body part 22. When the component 20 is mounted on the inner peripheral portion 1 A of the washing tub 1, the positioning unit 30 contacts the bottom wall 7 of the washing tub 1, thereby positioning the end 22 C of the main body 22 with respect to the bottom wall 7. To do.

One second engagement portion 24 is provided in the end portion 22D (here, the upper end portion) on the balancer 13 side in the main body portion 22 (see FIG. 1). The end 22D is the flange 25A described above (located at the upper end of the main body 22). In the flange 25A, a notch 31 is formed at a substantially central portion in the orthogonal direction Y described above. The notch 31 has a rectangular shape along the orthogonal direction Y when viewed from above, and the flange 25A is notched from the back surface 22B side of the main body 22. Therefore, in the notch 31, the back surface 22B side is opened.

The second engagement portion 24 has a substantially rectangular parallelepiped shape having a size that fits in the notch 31 when viewed from above. The second engagement portion 24 may be solid or hollow. The second engagement portion 24 of this embodiment is hollow, and the hollow portion of the second engagement portion 24 is opened on the back surface 22B side as shown in FIG.

The second engagement portion 24 is connected to the flange 25A at the deepest portion 31A (end on the surface 22A side) of the notch 31, and is not in contact with the flange 25A except for the deepest portion 31A. That is, the second engagement portion 24 is connected to the flange 25A (substantially central portion in the orthogonal direction Y) of the main body portion 22 with a hinge structure having the deepest portion 31A as the rotation center. Further, as shown in FIG. 4, a construction part 32 is provided as a part of the component 20 in the deepest part 31 A. The erection part 32 is erected between the flange 25 A and the second engagement part 24. Although the erection part 32 may be single or plural, when a plurality of the erection parts 32 are provided, they are separated in the orthogonal direction Y.

Thus, the second engagement portion 24 connected to the flange 25A of the main body portion 22 has flexibility and can be rotated up and down around the deepest portion 31A. Incidentally, the second engaging portion 24 in each of FIGS. 1 to 7 is in a state where no external force is applied (the state is not bent and is referred to as a “normal state”). The second engagement portion 24 in the normal state protrudes upward from the flange 25 A of the main body portion 22. The flange 25A and the erection part 32 in the deepest part 31A urge the second engagement part 24 so as to maintain a normal state (so as to protrude from the flange 25A of the main body part 22).

FIG. 6 shows a state where the component 20 is being attached to and detached from the inner peripheral portion 1A of the washing tub 1 in FIG. FIG. 7 is a view showing a main part of the washing tub 1 in a state where the component 20 is mounted on the inner peripheral portion 1A.

Next, the washing tub 1 will be further described with reference to FIGS. 6 and 7.

As shown in FIG. 6, on the surface of the bottom wall 7 of the washing tub 1 that defines the depression 11 (strictly speaking, the boundary between the inner peripheral surface 7C of the outer peripheral portion 7A and the upper surface 7D of the central portion 7B). Are provided with the same number (here, two) of first receiving portions 33 having a concave shape (hole shape) extending downward.

As shown in FIG. 7, a concave second receiving portion 34 that is recessed upward is provided at a position biased toward the outer peripheral surface 13 A side of the balancer 13 on the facing surface 13 C of the balancer 13. Therefore, the position of the facing surface 13C in the axial direction X is shifted by the amount of the second receiving portion 34 between the outer peripheral surface 13A side and the inner peripheral surface 13B side.

In the circumferential direction of the washing tub 1, the first receiving portion 33 and the second receiving portion 34 are in substantially the same position. Further, the set of the first receiving unit 33 and the second receiving unit 34 corresponds to the number of components 20. Therefore, if there is a single part 20, there is also a single set, and if there are a plurality of parts 20, there are also a plurality of sets.

Further, on the inner peripheral surface 6C of the circumferential wall 6 of the washing tub 1, a pin 45 protruding toward the central shaft 5 is provided in a region sandwiched between the first receiving portion 33 and the second receiving portion 34. (See FIG. 6). The pins 45 are provided in the same number as the bosses 40 (see FIGS. 3 and 5) provided on the back surface 22 B of the main body 22 of the component 20.

Based on the above, the procedure for mounting the component 20 on the inner peripheral portion 1A of the washing tub 1 will be described.

First, as shown in FIG. 6, the component 20 is accommodated in the washing tub 1 from the entrance / exit 8 so that the first engagement portion 23 is at the head. Then, each first engaging portion 23 is inserted into the corresponding first receiving portion 33 from above (from the entrance 8 side). In FIG. 6, the first engaging portion 23 is inserted into the first receiving portion 33 halfway (the first engaging portion 23 is received by the first receiving portion 33 and engaged with the bottom wall 7). It is shown. The component 20 in this state is inclined with respect to the axial direction X, and the second engagement portion 24 side of the component 20 is closer to the central shaft 5 side than the inner peripheral surface 13B of the balancer 13.

Next, the component 20 is rotated about the first engagement portion 23, and the second engagement portion 24 side is brought close to the inner peripheral surface 6 C of the circumferential wall 6. Then, the second engagement portion 24 in the normal state described above hits the balancer 13 (the connection portion between the inner peripheral surface 13B and the opposing surface 13C), and thus the rotation of the component 20 is temporarily stopped. Therefore, the second engagement portion 24 is pressed downward by a tool such as a screwdriver, and the second engagement portion 24 is bent downward from the normal state. When the component 20 is continuously rotated in this state, the second engaging portion 24 in a state bent downward is a facing surface 13C of the balancer 13 (a portion between the second receiving portion 34 and the inner peripheral surface 13B). ) (See also FIG. 7). Incidentally, when the second engagement portion 24 passes through the facing surface 13C of the balancer 13, the facing surface 13C bends the second engagement portion 24 downward from the normal state. It may be separated from the engaging part 24. As shown in FIG. 7, when the flange 25 and the rib 26 (whichever is sufficient) of the component 20 come into contact with the inner peripheral surface 6 C of the circumferential wall 6, the rotation of the component 20 is stopped.

At this time, the first engaging portion 23 is completely inserted into the first receiving portion 33 (see FIG. 6) (completely engaged with the bottom wall 7) (not shown). Further, when the rotation of the component 20 is stopped, the second engaging portion 24 that has been bent downward until now reaches just below the second receiving portion 34. When the second engaging portion 24 reaches just below the second receiving portion 34, there is nothing to press the second engaging portion 24 downward. Therefore, the second engaging portion 24 is projected from the main body portion 22 toward the second receiving portion 34 by returning to the normal state (by the flange 25A and the erection portion 32 in the deepest portion 31A described above). Be energized. Therefore, the 2nd engaging part 24 approachs the balancer 13 by approaching from the bottom with respect to the 2nd receiving part 34, and being received by the 2nd receiving part 34, as shown in FIG. As a result, the mounting of the component 20 to the inner peripheral portion 1A of the washing tub 1 is completed.

In this state, the pin 45 (see FIG. 6) provided on the inner peripheral surface 6 C of the circumferential wall 6 of the washing tub 1 corresponds to the corresponding boss 40 (FIG. 3 and FIG. 3) on the back surface 22 B of the main body portion 22 of the component 20. 5)). Thereby, the component 20 is mounted in a state of being reliably positioned with respect to the inner peripheral portion 1 A of the washing tub 1.

On the other hand, when removing the component 20 from the inner peripheral portion 1A of the washing tub 1, a sharp portion of a tool 35 such as a flat-blade screwdriver is inserted between the facing surface 13C of the balancer 13 and the flange 25A of the component 20. As a result, when the second engaging portion 24 is pressed downward by the sharp portion of the tool 35 and the second engaging portion 24 is bent downward from the normal state, the second engaging portion 24 receives the second receiving portion. It deviates from the part 34 downward. In this state, as shown in FIG. 6, the component 20 is rotated about the first engagement portion 23 toward the central shaft 5, and the second engagement portion 24 side is moved from the inner peripheral surface 6 C of the circumferential wall 6. When separated, the second engaging portion 24 bent downward passes through the facing surface 13C of the balancer 13 (the portion between the second receiving portion 34 and the inner peripheral surface 13B). Incidentally, when the second engagement portion 24 passes through the facing surface 13C of the balancer 13, the facing surface 13C bends the second engagement portion 24 from the normal state to the lower side, so that the tool 35 is engaged with the second engagement portion 24. It may be separated from the joint portion 24. Further, as the component 20 rotates, the pin 45 (see FIG. 6) provided on the circumferential wall 6 of the washing tub 1 is a hollow portion of the boss 40 (see FIGS. 3 and 5) of the main body 22 of the component 20. Deviate from.

When the second engagement portion 24 comes closer to the central axis 5 than the inner peripheral surface 13B of the balancer 13, the second engagement portion 24 returns to the normal state. Next, the rotation of the component 20 is stopped, and the component 20 is pulled out toward the doorway 8 side. Then, each first engagement portion 23 is disengaged from the first receiving portion 33. Thereby, the removal of the component 20 with respect to 1 A of inner peripheral parts of the washing tub 1 is completed.

As described above, the component 20 (particularly, the first engaging portion 23 and the second engaging portion 24) and the first receiving portion 33 and the second receiving portion 34 in the washing tub 1 are the inner circumference of the washing tub 1. An attachment / detachment structure 50 for attaching / detaching the component 20 to / from the portion 1A is configured (see FIGS. 6 and 7).

Further, as shown in FIG. 7, in the component 20 mounted on the inner peripheral portion 1 A of the washing tub 1, the main body portion 22 is placed between the balancer 13 on the entrance / exit 8 side and the bottom wall 7.

When the component 20 is mounted on the inner peripheral portion 1A of the washing tub 1, as described above, after the first engagement portion 23 of the component 20 is engaged with the bottom wall 7, the main body portion 22 is connected to the balancer 13 and the bottom wall. After the second engagement portion 24 is bent until it is installed between the second engagement portion 24 and the second engagement portion 24, the second engagement portion 24 is returned to the state before being bent and engaged with the balancer 13. That is, after removing the balancer 13 from the washing tub 1, the first engaging portion 23 is engaged with the bottom wall 7, and then the balancer 13 is reattached to the washing tub 1 and the second engaging portion 24 is engaged with the balancer 13. It is possible to save time and effort.

When removing the component 20 from the inner peripheral portion 1A of the washing tub 1, as described above, the first engagement portion 23 is removed from the bottom wall 7 after the second engagement portion 24 is bent and removed from the balancer 13, and the component 20 is removed. What is necessary is just to pull out 20 whole from the inner peripheral part 1A of the washing tub 1. That is, by removing the balancer 13 from the washing tub 1, the second engaging portion 24 is removed from the balancer 13, the first engaging portion 23 is removed from the bottom wall 7, and the entire component 20 is removed from the inner peripheral portion 1 A of the washing tub 1. It is possible to save the trouble of reattaching the balancer 13 to the washing tub 1 after the drawing.

As a result, the component 20 can be attached to and detached from the inner peripheral portion 1A of the washing tub 1 while the balancer 13 is still attached to the washing tub 1, so that the component 20 can be attached to and detached from the inner peripheral portion 1A of the washing tub 1. It is possible to improve the ease.

Further, since other parts such as screws for fixing the part 20 to the inner peripheral portion 1A of the washing tub 1 are not required, it is possible to reduce the man-hour and cost for attaching and detaching the part 20.

By the way, unlike the present invention, when the component 20 is sandwiched and supported by the bottom wall 7 of the washing tub 1 and the balancer 13, the assembly order of the balancer 13 and the component 20 in the washing tub 1 is inevitably determined. Therefore, if the order is incorrect, reassembly is required. However, in the case of the present invention, the component 20 can be assembled to the washing tub 1 at an arbitrary timing after the balancer 13 is assembled to the washing tub 1, which is convenient.

And since the 1st receiving part 33 provided in the bottom wall 7 receives the 1st engaging part 23, the 1st engaging part 23 can be reliably engaged with the bottom wall 7 (refer FIG. 6). Further, since the second receiving portion 34 provided on the surface of the balancer 13 facing the bottom wall 7 (opposing surface 13C) receives the second engaging portion 24, the second engaging portion 24 is securely engaged with the balancer 13. Can be combined.

In addition, the second engagement portion 24 is connected to the main body portion 22 by a hinge structure and is biased so as to protrude from the main body portion 22, so that the second engagement portion 24 can be bent and engaged with the balancer 13. Can be possible.

The present invention is not limited to the contents of the above embodiment, and various modifications can be made within the scope of the claims.

For example, each of the first engaging portion 23 and the second engaging portion 24 can have any shape as long as it can function as a claw that can engage with the inner peripheral portion 1A of the washing tub 1.

Moreover, although the number of each of the 1st engaging part 23 and the 2nd engaging part 24 can also be set arbitrarily, as above-mentioned, the number of the 2nd engaging parts 24 which needs to be bent using a tool etc. is as follows. Less is preferable.

In addition, in the state where the component 20 is mounted on the inner peripheral portion 1A of the washing tub 1 as shown in FIG. 7, the entire component 20 bends unnaturally, so that the center of the main body portion 22 in the longitudinal direction (axial direction X). It is assumed that the portion 22E (including the central portion 22E and its peripheral portion) unexpectedly floats from the inner peripheral portion 1A (the inner peripheral surface 6C of the circumferential wall 6) to the central axis 5 side. When the central portion 22E is lifted, a gap is generated between the rib 26 on the back surface 22B of the main body portion 22 and the inner peripheral surface 6C. There is a possibility that the sealing performance in a region other than the above will decrease in the gap. Specifically, when the water flowing through the flow path 21 leaks from the gap, there is a possibility that a problem such as a decrease in the amount of water circulating between the washing tub 1 and the flow path 21 may occur.

Therefore, it is conceivable to fasten the central portion 22E to the inner peripheral portion 1A of the washing tub 1 with screws or the like. However, this is troublesome and leads to an increase in the number of parts, as shown in FIG. A claw-like third engagement portion 43 may be provided for the central portion 22E. The third engagement portion 43 is included in the attachment / detachment structure 50 described above. For convenience of explanation, the third engagement portion 43 is illustrated only in FIGS. 5 and 7.

Referring to FIG. 5, one third engagement portion 43 is provided at each of both end portions (a pair of flanges 25 sandwiching the flow path 21) of the central portion 22 E in the orthogonal direction Y described above. The portion 22 protrudes on the side opposite to the surface 22A side (the inner peripheral surface 6C side of the circumferential wall 6). The distal end portion 43A of each third engaging portion 43 has a bowl shape. Each of the third engaging portions 43 is connected to the central portion 22E with a hinge structure at the base end portion 43B. In each of the third engaging portions 43, the distal end portion 43A side is bent around the base end portion 43B. Can be removed. Each third engaging portion 43 may be provided integrally with the main body portion 22.

When the component 20 is mounted on the inner peripheral portion 1A of the washing tub 1, referring to FIG. 7, if the central portion 22E of the component 20 is pressed against the inner peripheral surface 6C of the circumferential wall 6, each third engagement The distal end portion 43A of the portion 43 is fitted into a mounting hole 44 formed so as to penetrate the circumferential wall 6, and is engaged with the peripheral portion of the mounting hole 44 in the circumferential wall 6 (that is, the inner peripheral portion 1A of the washing tub 1). Match.

On the other hand, when removing the component 20 from the inner peripheral portion 1A of the washing tub 1, as in the case of the second engagement portion 24, a sharp portion in a tool 35 such as a flat-blade screwdriver is inserted into the attachment hole 44 and The distal end portion 43 A side of the third engagement portion 43 is bent, and the distal end portion 43 A is removed from the attachment hole 44. Thereby, the engagement state of each 3rd engaging

part

43 and 1 A of inner peripheral parts of the washing tub 1 can be cancelled | released easily.

As described above, if the third engaging portion 43 is provided, when the component 20 is mounted on the inner peripheral portion 1A of the washing tub 1, each third engaging portion 43 of the central portion 22E of the main body portion 22 is provided. Is engaged with the inner peripheral portion 1 A of the washing tub 1, the central portion 22 E can be prevented from floating from the inner peripheral portion 1 A of the washing tub 1. On the other hand, when removing the component 20 from the inner peripheral portion 1 A of the washing tub 1, the third engaging portion 43 may be removed from the inner peripheral portion 1 A of the washing tub 1. As described above, while preventing the central portion 22E of the main body portion 22 from being lifted when the component 20 is mounted on the inner peripheral portion 1A of the washing tub 1, high detachability of the component 20 with respect to the inner peripheral portion 1A of the washing tub 1 is achieved. realizable.

Note that the central portion 22E does not have to exist at the exact central position in the longitudinal direction of the main body portion 22, and may deviate from the central position. Further, the shape and the number of the third engaging portions 43 provided in the central portion 22E can be arbitrarily changed.

DESCRIPTION OF SYMBOLS 1 Washing tub 1A Inner peripheral part 7 Bottom wall 8 Entrance / exit 13 Balancer 13C Opposing surface 20 Parts 22 Main body part

22C End part

22D End part 22E Central part 23 1st engaging part 24 2nd engaging part 33 1st receiving part 34 1st 2 receiving part 43 3rd engaging part 50 attachment / detachment structure X axial direction

Claims

An attachment / detachment structure for attaching / detaching a part to / from an inner peripheral portion of a bottomed cylindrical laundry tub having an entrance through which laundry is taken in and out and a bottom wall disposed opposite to the entrance,
The parts are
A main body constructed between the balancer attached to the doorway side in the washing tub and the bottom wall;
A first engaging portion that is provided at an end of the main body on the bottom wall side and engages with the bottom wall;
A second engagement portion provided at an end of the main body portion on the balancer side, having flexibility and engaging with the balancer;
An attachment / detachment structure for attaching / detaching a component to / from the inner peripheral portion of the washing tub.
The bottom wall is provided with a first receiving portion that receives the first engaging portion,
A second receiving portion that receives the second engaging portion is provided on a surface of the balancer that faces the bottom wall.
The second engaging part is connected to the main body part by a hinge structure, and is biased so as to protrude from the main body part toward the second receiving part. Detachable structure as described.
2. A claw-like shape connected to a central portion in the longitudinal direction of the main body by a hinge structure, and including a third engaging portion that engages with an inner peripheral portion of the washing tub. Or the detachable structure of 2.
A component that is detachably attached to an inner peripheral portion of a bottomed cylindrical laundry tub having an entrance through which laundry is taken in and out and a bottom wall that is disposed opposite to the entrance,
A main body constructed between the balancer attached to the doorway side in the washing tub and the bottom wall;
A first engaging portion that is provided at an end of the main body on the bottom wall side and engages with the bottom wall;
A second engagement portion provided at an end of the main body portion on the balancer side, having flexibility and engaging with the balancer;
A part that is detachably attached to the inner peripheral portion of the washing tub.
The component according to claim 4, wherein the second engaging portion is connected to the main body portion by a hinge structure and biased so as to protrude from the main body portion.
5. A claw-like shape connected to a central portion in the longitudinal direction of the main body portion by a hinge structure, and including a third engaging portion that engages with an inner peripheral portion of the washing tub. Or the part of 5.