JP2016067615A - Dishwasher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dishwasher capable of retaining a firm lid-closed state.SOLUTION: A lock mechanism 15 of a dishwasher 1 includes: a rotary shaft 17 provided on an operation panel 13; an engagement member 18 fitted to the rotary shaft 17; and an engagement object member 19 provided at a housing 2. When a trajectory line of a shaft core of the rotary shaft 17 is defined as a reference line, the engagement member 18 rotates in a direction of approaching to the reference line and is engaged with the engagement object member 19 at a position not going across the reference line.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a dishwasher for washing dishes.

  Conventionally, with a washing machine main body formed with an opening for taking in and out dishes to be cleaned, a door plate that closes the opening, and a state in which the opening is closed so that the opening is not opened during operation. A dishwasher having a lock mechanism for fixing a door plate is known.

  As this type of dishwasher, for example, there is a drawer-type dishwasher installed in a system kitchen. Such a dishwasher includes a housing (washing machine main body) that houses a washing tub for storing tableware so that it can be inserted and removed freely from an opening formed at the front, and a front opening of the housing. There is a thing provided with a door plate which closes.

  As a lock mechanism of such a dishwasher, a shaft (rotary shaft) provided in the upper part of the door and extending in the left-right direction intersecting with the front-rear direction of the door (sliding direction of the washing tank) when opened, There is one having a lock piece (engagement member) that is rotatably attached and a lock plate (engaged member) that is provided on the upper part of the washing machine main body and engages with the lock piece (for example, see Patent Document 1) .)

  Moreover, in addition to the drawer-type dishwasher as described in Patent Document 1, the washing machine main body provided with an opening part in the front, and a support shaft provided at the lower end or upper end of the opening part are rotated around the washing machine body. In addition, a front open type dishwasher including a door body that opens and closes an opening is also known.

JP 2011-206130 A

  By the way, in the conventional tableware washing machine, at the time of washing, washing water collides with a washing tub or a door board. In general, for example, warm water of 60 ° C. is used as the cleaning water. Therefore, there is a possibility that the washing tank or the door plate with which the washing water collides may be vibrated by the collision of the washing water or may be deformed such as expansion due to the heat transmitted from the washing water. In the pull-out type, the cleaning tank expands and a force in the pull-out direction is applied to the lock mechanism. In the front open type, a force in the opening direction is applied to the door plate from the inside due to such vibration and deformation, and the lock is not prepared. There was a risk of being released.

  This invention is made | formed in view of the above point, and it aims at providing the dishwasher which can maintain a firm lid closed state.

  In order to achieve the above object, the dishwasher of the present invention includes a washing machine body in which an open part for taking in and out dishes to be cleaned is formed in front, a door plate that opens and closes the open part, and A dishwasher having a lock mechanism for releasably fixing the door plate in a state in which the opening is closed, the lock mechanism being provided on the door plate, and a moving direction when the door plate is opened A rotating shaft extending in the horizontal direction intersecting, an engaging member having an engaging portion rotatably attached to the rotating shaft, and an engaged member that is provided in the cleaning machine main body and engages with the engaging portion The engagement portion rotates in a direction approaching the reference line and does not exceed the reference line when the track line of the axis of the rotating shaft at the time of opening / closing the door plate is used as the reference line. It is characterized by engaging with.

  In the dishwasher of the present invention, when the door plate is about to move in the opening direction, the engaging portion is caused by the force applied in the opening direction of the door plate that is applied to the engaging member via the rotation shaft. It rotates around the rotation axis in a direction approaching the track line (reference line) of the axis of the rotation axis. This rotation direction coincides with the rotation direction when the engaging portion engages with the engaged member. Further, since the engaging portion and the engaged member are engaged at a position not exceeding the reference line, the engagement (lock) becomes stronger as the engaging member rotates in this direction.

  Therefore, according to the present invention, when a force in the opening direction is applied to the door plate in the locked state, the force is converted to a force that strengthens the lock, so that a strong closed state is maintained. And there is no risk of the lock being inadvertently released.

  In the dishwasher of the present invention, the locking mechanism includes a pressing member that is interlocked with the engaging member, and whether the engaging portion and the engaged member are engaged by being pressed by the pressing member. It is preferable to have a detection switch for detecting.

  In this manner, if a pressing member configured to be interlocked with the engaging member is used, it can be accurately detected whether or not it is locked.

  Moreover, in the dishwasher of this invention, a lock mechanism has an elastic member which urges | biases an engaging part to the direction engaged with a to-be-engaged member, and it engages with an engaging member when it grasps. It is preferable that the gripping portion that rotates the portion in the direction of releasing the engagement with the engaged member is integrally configured. .

  If comprised in this way, since the number of parts can be reduced compared with what connected the separate engagement member and the holding member via the some link member, for example, it is hard to produce a malfunctioning. Become. Moreover, the lock can be released simply by gripping the gripping portion, and the rotational force when gripped is immediately transmitted to the engagement portion without loss, so that while maintaining a strong lid closed state, The release operation can be performed very easily.

Explanatory drawing which shows typically the structure of the dishwasher of 1st Embodiment of this invention. Sectional drawing which expands and shows the structure of the locking mechanism of the tableware washing machine of FIG. It is a perspective view which expands and shows the structure of the locking mechanism and detection switch of the tableware washing machine of FIG. 1, and is a figure which shows a lock release state. It is a perspective view which expands and shows the structure of the lock mechanism and detection switch of the tableware washing machine of FIG. 1, and is a figure which shows a locked state. Sectional drawing which shows typically the structure of the dishwasher which concerns on the modification of this invention.

  Hereinafter, with reference to FIGS. 1-4, the dishwasher which concerns on this embodiment is demonstrated.

  First, with reference to FIG.1 and FIG.2, schematic structure of the dishwasher 1 is demonstrated.

  As shown in FIG. 1, the dishwasher 1 is a drawer-type one that is installed in a system kitchen. An open portion is formed in front of the housing 2 (washing machine main body) of the dishwasher 1, and the washing tub 3 accommodated in the housing 2 can be taken in and out from the open portion. .

  A cleaning nozzle 4 for ejecting cleaning water is provided on the bottom side of the cleaning tank 3. A drying duct 5 and a drying fan 6 for introducing drying air for drying the tableware in the cleaning tank 3 are provided on the back side of the cleaning tank 3.

  At the bottom of the cleaning tank 3, a cleaning water reservoir 8 is provided in the cleaning tank 3 so as to communicate with the leftover filter 7. A cleaning / drainage pump 9 communicating with the cleaning nozzle 4 and the reservoir 8 is installed below the bottom of the cleaning tank 3. The cleaning / drainage pump 9 supplies cleaning water to the cleaning nozzle 4 when rotated forward, and drains the cleaning tank 3 when rotated reversely. In addition, a tableware basket 10 for supporting tableware is detachably attached to the inside of the washing tub 3.

  The cleaning nozzle 4 is installed below the tableware basket 10 and includes a lower nozzle 11 that is long in the horizontal direction and a center nozzle 12 that is erected at the center in the longitudinal direction of the lower nozzle 11.

  The lower nozzle 11 spouts the washing water toward the tableware basket 10 while turning around the vertical axis at the center in the longitudinal direction. The lower nozzle 11 is turned by the reaction force of the washing water supplied from the washing / drainage pump 9.

  The center nozzle 12 includes a lower half portion 12a that rotates integrally with the lower nozzle 11, and an upper half portion 12b that is inserted in the lower half portion 12a so as to be movable up and down. When cleaning water is supplied from the cleaning / drainage pump 9, the center nozzle 12 rotates with the lower nozzle 11, and the upper half 12 b extends upward by water pressure. Then, washing water is ejected from the lower half 12 a and the upper half 12 b of the center nozzle 12 toward the tableware basket 10.

  The upper part of the washing tub 3 has a shape protruding forward, and an operation panel 13 for performing operations such as starting and stopping washing of tableware is fixed. A door member 14 is fixed at a position below the operation panel 13. In the dishwasher 1, the operation panel 13 and the door member 14 serve as door plates that open and close the open part of the housing 2 (washing machine body).

  A lock mechanism 15 is provided at the center of the operation panel 13 to releasably fix the operation panel 13 and the door material 14 (door plate) in a state where the open portion of the housing 2 is closed (in FIG. 1). Not shown, see FIG.

  As shown in FIG. 2, the washing tub 3 has a flange portion extending outward from the upper edge of the opening 3 b around the opening 3 b formed on the upper surface for taking in and out the dishes to be washed. 3a. The opening 3 b is closed by a lid body 2 a located on the upper side of the cleaning tank 3 when the cleaning tank 3 is stored in the housing 2. At this time, the gap between the flange portion 3a of the cleaning tank 3 and the lid 2a is sealed by the sealing member 16 attached to the lid 2a, and the internal space of the cleaning tank 3 is in a sealed state.

  Next, the lock mechanism 15 will be described with reference to FIGS.

  As shown in FIG. 2, the lock mechanism 15 includes a rotation shaft 17 provided on the operation panel 13, an engagement member 18 rotatably attached to the rotation shaft 17, and an engaged state provided on the housing 2. A member 19 and a spring 20 (not shown in FIG. 2; see FIG. 3) for urging the engaging member 18 are provided.

  The rotating shaft 17 extends in a horizontal direction (a direction perpendicular to the paper surface of FIG. 2) that intersects the moving direction when the operation panel 13 and the door member 14 are opened.

  The engaging member 18 extends to the housing 2 side from the rotating shaft 17, and the engaging portion 18 a whose tip protrudes to the engaged member 19 side and the grip extending from the rotating shaft 17 to the side away from the housing 2. Part 18b (gripping member).

  When the gripping portion 18b is gripped in the locked state shown by the solid line in FIG. 2, the locking of the engaging member 18 and the engaged member 19 is released with the rotation shaft 17 as the center. In the direction (clockwise in FIG. 2), and the posture shown by the phantom line (broken line) in FIG.

  Thus, by providing the gripping portion 18b on the engaging member 18, the dishwasher 1 of this embodiment, for example, separates the engaging member and the gripping member from each other via a plurality of link members. Compared to connected ones, the number of parts can be reduced, and malfunctions are less likely to occur. Moreover, the lock can be released simply by gripping the grip portion 18b, and the rotational force when gripped is immediately transmitted to the engagement portion 18a of the engagement member 18 without loss, so that the release operation can be performed. It can be done very easily.

  The engaged member 19 is fixed so that an engaged portion 19 a that engages with the engaging portion 18 a of the engaging member 18 protrudes toward the cleaning tank 3 at the upper part on the front surface side of the housing 2. The engaged portion 19a is lower than the reference line when the track line (the one-dot chain line in FIG. 2) of the rotating shaft 17 during the opening / closing operation of the operation panel 13 and the door member 14 is used as a reference line. Is located.

  The spring 20 (elastic member) biases the engaging member 18 in a direction (counterclockwise direction in FIG. 2) to engage the engaged member 19 with the rotation shaft 17 as the center. Therefore, when the dishwasher 1 is not in use and the operation of unlocking is not performed, the locked state is maintained by the urging force of the spring 20.

  By the way, in the dishwasher 1 of this embodiment, washing water collides with the inner surface of the washing tank 3 at the time of washing. In addition, for example, warm water of 60 ° C. is used as the cleaning water. For this reason, the cleaning tank 3 may be vibrated due to the collision of the cleaning water or may be deformed by the heat transmitted from the cleaning water during the cleaning. Then, due to such vibration and deformation of the cleaning tank 3, a force in the opening direction is applied to the operation panel 13 and the door material 14 attached to the cleaning tank 3 from the inside, and the lock mechanism 15 provided on the operation panel 13 is released. There is a possibility that a directional force (force in a direction opposite to the biasing force of the spring 20) is applied.

  Here, in the dishwasher 1 of the present embodiment, the engaging portion 18a and the engaged portion 19a are engaged at a position that does not exceed the track line of the axis of the rotating shaft 17 (below in the present embodiment). Therefore, when the operation panel 13 and the door member 14 are about to move in such a direction as to open by such a force, the opening force of the operation panel 13 and the door member 14 is also applied to the engagement member 18. With this force, the engaging member 18 rotates in a direction approaching the track line (reference line) of the axis of the rotating shaft 17.

  This rotational direction coincides with the rotational direction when the engaging member 18 is engaged with the engaged member 19. Therefore, as the engagement member 18 rotates in this direction, the engagement (lock) becomes stronger.

  Therefore, according to the dishwasher 1 of the present embodiment, even if a force in the opening direction is applied to the operation panel 13 and the door member 14 due to vibration or deformation of the washing tub 3 in the locked state, the force is Since the force is converted into a force that strengthens the lock, a strong closed state is maintained, and there is no possibility that the lock is inadvertently released.

  As shown in FIG. 3, the lock mechanism 15 includes a pressing member 21 configured integrally with the engaging member 18, and a spring 20 (elastic member) locked to the pressing member 21 and the cleaning tank 3. , And a detection switch 22 fixed to the cleaning tank 3.

  The pressing member 21 is disposed at a position shifted in the axial direction of the rotating shaft 17 with respect to the engaging member 18 and rotates in conjunction with the engaging member 18. The pressing member 21 can press the detection switch 22 by its lower end portion 21a.

  When the unlocking operation is not performed, the detection switch 22 is pressed by the lower end 21a of the pressing member 21 (see FIG. 4). On the other hand, when the operation of releasing the lock is performed by gripping the grip portion 18b of the engagement member 18, the pressing member 21 rotates integrally with the engagement member 18, and the detection switch 22 Pressing is released.

  In this way, in the dishwasher 1 of the present embodiment, the detection switch 22 that detects the locked state is configured to be pressed by the pressing member 21 that is interlocked with the engaging member 18. Can be detected with high accuracy.

  Although the illustrated embodiment has been described above, the present invention is not limited to such a form.

  For example, in the above-described embodiment, the present invention has been described using a drawer-type dishwasher installed in a system kitchen. However, the present invention is not applicable only to such a drawer type dishwasher.

  For example, the present invention can be applied to a front open type dishwasher as shown in FIG. In the case of this dishwasher, a front cover portion 24 (door plate) for providing an engaged portion 23b in a main body portion 23 (washing machine main body) having an opening portion formed in front and closing the opening portion. Is provided with an engaging portion 24a.

  In this dishwasher, the engaging portion 24a of the lock mechanism is configured to switch between a locked state and an unlocked state by an actuator (not shown). Of course, the switching of the lock by the actuator can also be applied to a drawer type dishwasher.

  Moreover, in the said embodiment, the engaging position of the engaging member 18 and the to-be-engaged member 19 is made below the reference line. However, the engagement position may be a position closer to the reference line than the position of the engagement portion of the engagement member in the unlocked state. For example, when the position of the engaging portion of the engaging member in the unlocked state is above the reference line, the engaging position is above the reference line.

DESCRIPTION OF SYMBOLS 1 ... Tableware washing machine, 2 ... Housing | casing (washing machine main body), 2a ... Cover body, 3 ... Cleaning tank, 3a ... Flange part, 3b ... Opening part, 4 ... Cleaning nozzle, 5 ... Drying duct, 6 ... Drying fan , 7 ... leftover filter, 8 ... pool part, 9 ... washing / drainage pump, 10 ... tableware basket, 11 ... lower nozzle, 12 ... center nozzle, 12a ... lower half part, 12b ... upper half part, 13 ... operation panel , 14 ... Door material, 15 ... Lock mechanism, 16 ... Seal member, 17 ... Rotating shaft, 18 ... Engagement member, 18a ... Engagement part, 18b ... Gripping part, 19 ... Engagement member, 19a ... Engagement 20, spring (elastic member), 21, pressing member, 21 a, lower end, 22, detection switch, 23, main body (cleaning machine main body), 23 a, engaged portion (engaged member), 24 ... front lid part (door plate), 24a ... engagement part (engagement member).

Claims (3)

The main body of the washing machine with an open part for putting in and out the dishes to be cleaned, the door plate that opens and closes the open part, and the door plate can be released with the open part closed. A dishwasher equipped with a locking mechanism for fixing to
The lock mechanism is provided on the door plate, and has an engagement shaft that extends in a horizontal direction intersecting a moving direction when the door plate is opened, and an engagement portion that is rotatably attached to the rotation shaft. A member and an engaged member that is provided in the cleaning machine main body and engages with the engaging portion;
When the track line of the axis of the rotating shaft at the time of opening and closing the door plate is a reference line, the engagement portion rotates in a direction approaching the reference line and does not exceed the reference line, A dishwasher characterized by engaging with an engaged member.   The lock mechanism includes a pressing member interlocked with the engaging member, and a detection switch that detects whether the engaging portion and the engaged member are engaged by being pressed by the pressing member. The dishwasher according to claim 1, wherein: The lock mechanism includes an elastic member that urges the engaging portion in a direction to engage the engaged member,
The gripping portion for integrally rotating the engagement member in a direction to release the engagement with the engaged member when gripped is integrally formed. A dishwasher according to claim 1 or claim 2.