JP7391707B2 - Dishwasher - Google Patents

Description

The present invention relates to a dishwasher equipped with a pre-washing means, and more particularly to a dishwasher equipped with a conveying means for intermittently moving the items washed by the pre-washing means into a washing cabinet in which a main washing tank is located. It's about machines.

Some dishwashers perform main washing after prewashing, and others perform only main washing. The former roughly washes away residue and seasonings that adhere to the items to be washed, so dishwashers that have a pre-washing means that performs the main washing after the pre-washing are usually better in terms of cleaning effectiveness. ing. There are two types of dishwashers with pre-washing means: a pre-washing tank for pre-washing is shared with the main-washing tank for main-washing, or a washing tank is separate from the main-washing tank for main-washing.

If the pre-wash tank and main-wash tank are shared, the dishwasher can be made smaller, but the residue washed away during the pre-wash will accumulate in the residue receiver at the bottom of the tank, and the washing water during the main wash will be and obstructs the flow of rinsing water. If the residue is large, the filter in the residue receiving section will become clogged.

On the other hand, if the pre-washing tank has a different configuration from the main washing tank, large residues are removed in the pre-washing tank, and the filter in the main washing tank's residue receiving part can be prevented from becoming extremely clogged. It is necessary to provide a washing tank. As a result, there is a tendency for dishwashers to become larger. Examples of separate washing tanks include, for example, the dishwasher disclosed in Patent Document 1 below and the dishwasher described in Patent Document 2 (third embodiment).

By the way, with existing dishwashers that have separate pre-wash tanks and main-wash tanks, the user must move the items to be washed into the main-wash tank after they have been pre-washed in the pre-wash tank. be. For example, in the case of Patent Document 1, after pre-washing is performed in the sink tank 22 provided at the front stage of the washing machine main body, the user moves the rack 4 (that is, the container) containing the objects to be washed to the washing chamber 2. Set it inside. Paragraph [0081] and FIGS. 8 and 9 of Cited Document 2 describe that when the prewashing is completed in the prewash tank 31, the user moves the object to be cleaned to the washing tank 10 (that is, the main washing tank).

Further, in the dishwasher described in the following cited document 3, a guide 13 is provided between the pre-wash tank section 3 (that is, the pre-wash tank) and the main wash tank section 4, and the rack 12 containing the items to be washed is placed in the guide 13. It is configured to move on top. However, moving the rack to the main washing tank section is still the same as transporting the rack by the user himself. There is also a dishwashing system in which an arm-type robot moves a washing rack 800 (that is, a container), as in Cited Document 4 below, but this system has a large-scale configuration and is fundamentally different from the present invention. It's obvious.

Japanese Patent Application Publication No. 2000-279356 Japanese Patent Application Publication No. 2018-183359 Utility Model Publication No. 51-149164 Patent Application No. 2018-534391

If it is a household dishwasher, the number of items to be washed is not so large and the number of times it is washed is small, so it is not a particular problem for the user to move the items to be washed from the prewash tank to the main washing tank. Dew. However, for example, in the case of a dishwasher for commercial use such as school lunches or restaurants with many customers, it must process a huge amount of items to be washed, and moving to the main washing tank requires the use of power. This is requested. Moreover, not only is cleaning efficiency required to ensure that the items to be washed remain clean and free of residue after washing, but also the overall size of the dishwasher including the power mechanism, in other words the cleaning means. The challenge was to make it more compact by minimizing the increase in the installation space required. Some commercial dishwashers place a large amount of items and racks on a belt conveyor and automatically move the items and racks to the washing tank, but they still require a large-scale configuration. It is inevitable that it will happen.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a small-sized dishwasher that has good cleaning efficiency and automatically moves from the prewash tank to the main wash tank.

In order to solve the above problems, a dishwasher equipped with a prewashing means and a main washing means according to the present invention includes a container for accommodating items to be washed, and a prewashing means having a prewash tank. and a container transport means for automatically transporting the container through the pre-washing tank to a main washing means having a main washing tank separated from the pre-washing tank, and the main washing means washes and rinses the container in a stopped state. It is characterized by carrying out.

Further, in the dishwasher according to the present invention, the container conveying means intermittently conveys the container to the pre-washing means and the main washing means by controlling a cylinder mechanism that moves a piston in the horizontal direction. It is characterized by Moreover, the movable range of the cylinder mechanism is smaller than the width of the container and the pre-washing means in the movable direction. Further, the dishwasher according to the present invention further includes one or more engaging members coupled to the cylinder mechanism, and the engaging members are arranged in one direction of the piston movement of the cylinder mechanism by the container conveying means. In the direction opposite to the one direction, the container is brought into an engaged state, and in the direction opposite to the one direction, the container is brought out of engagement.

Furthermore, the engaged state and the non-engaged state are formed by a rotational movement of the engaging member, and the engaging state is adjusted so that the engaged state is produced in a situation where there is no load force on the engaging member. The center of gravity is set. Furthermore, the engaging member includes a spring mechanism, and uses the force of the spring to switch between the engaged state and the non-engaged state with the container.

In the dishwasher of the present invention, since the pre-wash tank and the main wash tank are separate, residues and seasonings remaining in the residue receiving part of the pre-wash tank will not mix with the cleaning liquid circulating in the main washing process. . Therefore, it is possible to suppress the degree of contamination of the cleaning liquid in the main washing process, and it is possible to improve the cleaning effect of the dishwasher. Since the items to be cleaned brought into the main washing process do not have large uneaten food items attached to them, the residue receiving filter in the main washing tank does not get clogged, and a smooth flow path can be ensured.

Furthermore, the dishwasher of the present invention is configured to use horizontal power to transport the racks that accommodate the items to be washed from the prewash tank to the main wash tank. In particular, since the drive section for transporting the rack is a mechanism that moves by a piston, the rack can be carried into the main washing tank without having to make the drive section long enough to correspond to the width of the rack. It is also possible to make the prewash tank narrower than the width of the rack.
In other words, the drive mechanism based on piston motion allows a small pre-washing means to be realized, and the overall size of the dishwasher of the present invention can be reduced.

1 is an overall configuration diagram showing an outline of an entire dishwasher that is an embodiment of the present invention. It is a figure which shows the state of the rack carried into a dishwasher, and the rack during washing. It is a figure which showed the movable unit position before and after cylinder expansion in a prewash tank. It is a figure for explaining the engagement state of a hook and a rack. It is an enlarged view of a hooking claw. FIG. 6 is a diagram showing a state in which the movable unit is engaged with the rack grid with the hooking claws raised; It is a figure which shows the position adjustment hole of a hook. FIG. 6 is a diagram for explaining the rotational movement of the hook engaged with the rack. It is a figure showing an example of a hook using a spring mechanism. FIG. 7 is a diagram showing another example of a hook using a spring mechanism.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic diagram of a dishwasher 100 that is an embodiment of the present invention. The internal structure of the dishwasher 100 is divided into a prewash section 1 with a prewash tank and a main wash section 2 with a main wash tank, and each is stacked on an installation stand 5. In the case of the dishwasher 100 of this embodiment, the prewash section 1 and the main wash section 2 are in contact with each other, and the opening of the contact surface 7 is connected to the container 4 containing the items to be washed (hereinafter referred to as "tableware"). (hereinafter referred to as "rack 4") passes through. In other embodiments, the prewash section 1 and the main wash section 2 may be separated from each other without contacting each other, but it goes without saying that the smaller the separation distance, the more advantageous it is in terms of making the dishwasher 100 more compact. .

The dishwasher 100 of this embodiment includes a nozzle 8 having a large number of holes for spraying water or hot water for washing dishes from above the main washing section 2, and a nozzle 8 for spraying water or hot water for rinsing. A nozzle 16 having a large number of holes is arranged. The washing nozzle 8 and the rinsing nozzle 16 rotate within the main washing section 2, and spray washing water or rinsing water evenly onto the dishes. The pre-washing section 1 is provided with water pipes 9 through which water or hot water drops from a plurality of locations. The water tube 9 is not limited to the shape of a single straight tube, but may have any shape including a curved portion. Nozzle 8 is connected to a water supply pipe 10 and a circulation pipe (not shown). The circulation pipe is a member for connecting the main washing tank 12 and the nozzle 8 so that water or hot water once used in the dishwasher 100 is circulated by a pump (not shown) and sprayed again. In this embodiment, the rinsing nozzle 16 is connected to a water supply pipe 17. Note that the sprayed rinsing water is put into a washing water tank (not shown), and overflowing water is discharged.

In addition, in this embodiment, water or hot water for cleaning in a water storage tank (not shown) is used, but in other embodiments, a water storage tank is not used and the water supply pipe 10 is directly connected to a water pipe. You can also use it as The nozzles 8, 16 and the water tubes 9 do not necessarily need to be arranged above, and may be arranged so that the water is sprayed from the side or bottom surface, or two or more may be used. Furthermore, when using two or more nozzles or water pipes, the arrangement may be such that the spray can be ejected from different sides, such as the top and the bottom, or the top and the sides. In addition, the pre-washing section 1 may be a rotating nozzle-type washing such as the nozzles 8 and 16 instead of the water pipe 9.

Washing water and rinsing water sprayed from the nozzles 8 and 16 and the water pipe 9 flow into washing tanks 11 and 12 located below the installation stand 5, respectively. The prewash tank 11 and the main wash tank 12 each have a residue receiving section. Residues removed from dishes are collected in a filter provided in the residue receiver and discarded after cleaning. Note that the prewash tank 11 and the main wash tank 12 are not necessarily required to be completely independent. For example, the shape of the washing tank is one, but a raised partition wall is provided inside the washing tank to essentially form two tanks, so that sewage or residue from one tank does not flow into the other tank. You may also do so.

FIG. 2 shows the movement of the rack 4 in the dishwasher 100. Note that in actual use, a plurality of tableware will be stored in the rack 4, but the tableware is not shown in FIG. 2 and other figures. As shown in the right figure of FIG. 2, there is a loading table 14 connected to the installation table 5 above the rack conveying section 3 (corresponding to the "container conveying means" in the claims), and the user can move the rack 4 onto the loading table 14. I'll put it on. When the rack 4 is pushed into the prewash section 1 through the opening 6 by the container conveyance means, washing water is ejected from the water pipe 9 of the prewash section 1. The timing of ejection may be manual or automatic.
In the right view of FIG. 2, the outer frame 13 of the main washing section 2 is lifted upward, but the outer frame 13 is automatically or manually lowered to the installation stand 5 when the pre-washing is completed.

Further, although FIG. 2 shows the opening 6 of the pre-washing section 1 in an open state, a curtain member or the like may be attached to the opening 6 in order to prevent water from splashing outside. In addition, in this embodiment, since the prewash section 1 is narrower than the width of the rack 4, the rack 4 is not completely accommodated in the prewash section 1, but the rack 4 is completely accommodated inside the prewash section 1. In other embodiments, the opening 6 may be provided with a door. In this case, water droplets will not be scattered outside.

The center view of FIG. 2 shows a state in which the rack 4 has passed through the pre-washing section 1 (after completing the pre-washing) and has reached the main washing section 2. Movement from the loading table 14 to the main washing section 2 is controlled by the rack transport section 3, which will be described later. When the rack 4 reaches the main washing section 2 and stops, and it is detected that the outer frame 13 has lowered, water or hot water is spouted while the nozzle 8 rotates, and the dishes are washed.
After washing, water or hot water is spouted while the nozzle 16 rotates to rinse the dishes. When the washing of the dishes is completed after a predetermined period of time has elapsed, if the dishwasher 100 is equipped with a drying function, a drying process is executed. In the present invention, description regarding the drying process is omitted.

The left diagram in FIG. 2 shows a state in which the main washing process has been completed, the outer frame 13 has moved upward, and the rack 4 can be taken out. Note that an opening or a door may be provided on the front or side surface of the outer frame 13, and the rack 4 may be taken out after opening the door.

Next, the structure and control of the rack transport section 3, which is an actuator for moving the rack 4 between the loading table 14 and the main washing section 2, will be explained. The electric motor of the rack transport section 3 causes the cylinder 22 to extend and contract within the prewash tank 11. As shown in FIG. 3 and the like, the rack conveyance section 3 is directly connected to the cylinder 22 and installed next to the prewash section 1. Since parts such as a motor and a circuit are housed inside the casing of the rack transport unit transport unit 3, it is waterproof. Note that a configuration may be adopted in which the rack conveyance section 3 exists inside the prewash tank 11 of the prewash section 1.

3(a) shows the position of the movable unit 20 before the cylinder 22 is extended in the prewash tank 11 of the prewash section 1, and FIG. 3(b) shows the position of the movable unit 20 when the cylinder 22 is extended toward the main wash tank 12. The position of the movable unit 20 is shown.
A support member 23 having a hole through which a guide shaft 24 passes is coupled to the upper part of the cylinder 22, and the movable unit 20 is attached to the support member 23. Therefore, the expansion and contraction of the cylinder 22 enables the movable unit 20 to reciprocate within the prewash section 1. The distance D shown in FIG. 3(a) is the movable range when the movable unit 20 reciprocates.

As shown in FIGS. 3A and 3B, the movable unit 20 has hooking claws 21-1 and 21-2 that are engaging members. Therefore, while the hook 21-1 of the movable unit 20 is engaged with the rack 4 carried into the mounting table 14 (see FIG. 4(a)), the cylinder 22 is extended and the movable unit 20 is attached to the main washing tank 12. When the rack 4 moves to the side, the rack 4 advances toward the main washing section 2 (see FIG. 4(b)). When the engagement between the hook 21 and the rack 4 is released, the movable unit 20 and the rack 4 become independent, and as shown in FIG. As it moves backward, it returns to its original position (the state shown in FIG. 4(a)). Note that it is sufficient that at least one hooking claw 21 is engaged.
In addition, during the return journey in which the cylinder 22 moves backward toward the original position, the water etc. from the water pipe 9 may be set to be stopped using a solenoid valve or the like, or may be set to be left out.

Next, the structure of the above-mentioned hooking claw 21 and its engagement relationship with the rack 4 will be explained in detail. FIGS. 5A and 5B are enlarged views of the hooking claw 21. FIG. In reality, a round bar passes through the hole 211 of the hooking claw 21, but it is omitted in this figure. The movable unit 20 of this embodiment is configured so that the weight balance of the hook 21 is biased, and as a result, the hook 21 is characterized in that it can rotate about a round bar passing through the hole 211 as a rotation axis. Specifically, by moving the center of gravity closer to the B side shown in the figure, the weight balance becomes A side < B side, and when no load is applied to the hook 21, the weight balance becomes A side as shown in FIG. The tip of the side is located above the upper end surface of the movable unit 20. In other words, the nails are in an upright position.

FIG. 6 shows a state in which the movable unit 20 with the hooking claw 21 raised is engaged with the grid on the bottom surface of the rack 4. Since the bottom surface of the rack 4 has a lattice structure, the hooks 21 can be inserted into the spaces between each lattice.
The number of hooking claws 21 of the movable unit 20 is not limited to two, and may be one, three or more. Furthermore, the number of hooking claws 21 that engage does not need to be at one location. The rack 4 may be installed so that the plurality of hooking claws 21 are engaged with the rack 4. When there are multiple hooks 21, when the hook 21-1 closest to the mounting table 14 first engages the rack grid space closest to the main washing tank 12, the longest rack in the movable range D is finally selected. This will allow you to move.
Although only the bottom surface of the rack 4 in FIG. 6 has a lattice structure so that water and the like can escape, it goes without saying that not only the bottom surface but also the four sides of the rack may have a lattice structure.

FIG. 7 shows that the position of the hook 21 on the movable unit 20 can be adjusted according to the shape of the rack 4. A rack position adjustment member 25 is interposed between the support member 23 and the movable unit 20, and the movable unit 20 is provided with a mounting hole 26 whose position can be changed. The length of the movable unit 20 can be arbitrary. Thereby, the attachment position of the movable unit 20 can be changed by selecting the attachment hole 26 as appropriate depending on the width of the grid of the rack 4.

FIGS. 8(a) to 8(g) are diagrams for explaining the rotational operation of the hooking claw 21 engaged with the rack 4. FIG. Note that the support member 23, cylinder 22, etc. below the movable unit 20 are omitted from illustration.
FIG. 8(a) shows a state in which the rack 4 has moved to its full movable range due to the outward movement of the piston of the cylinder 22 (that is, corresponds to FIG. 4(b)). Thereafter, as the cylinder 22 moves backward, the movable unit 20 begins to move backward (movement back to its original position) in the direction of the arrow, and the position P of the rack 4 and the position Q of the hook 21 begin to approach each other. FIG. 8(b) shows a case where the position P and the position Q match. At this time, the hook 21 receives a downward force at the position P of the rack 4, so it begins to rotate as indicated by the arrow in FIG. 8(c).

As shown in FIG. 8(d), as the movable unit 20 continues to move backward, the amount of rotation of the hook 21 increases as the position P approaches the position Q' (that is, the position A1 moves downward ). FIG. 8(e) shows a state in which the position P approaches the position A1. It is necessary to adjust the positional relationship of the hooks 21 on the movable unit 20 depending on the grid width of the rack 4 used. Specifically, the mounting position of the movable unit 20 may be determined by the rack position adjusting member 25 described above in accordance with the shape of the rack 4 to be used.

When the movable unit 20 further continues to move backward toward the original position, the rotation of the hook 21 is maintained while the position A1 contacts the bottom surface of the grid of the rack 4 until it reaches the end opposite to the position P. (See FIG. 8(f)). Although the hooking pawl 21 may temporarily become non-contact due to the acceleration of movement, basically the hooking pawl 21 maintains rotation while being in contact with the rack 4. Thereafter, when the position A1 enters the rack grid space, the engagement between the hook 21 and the rack 4 is restored (see FIG. 8(g)). At this time, as shown in FIG. 8(g), the hooking claw 21 is in an upright state. The rotation operation of the hook 21 shown in FIGS. 8(a) to 8(g) is repeated for each rack grid space until the movable unit 20 returns to the movement start position (outward start position) which is the end of the reverse movement. During the return movement of the movable unit 20, the hook 21 rotates so that it is disengaged from the rack 4, so the rack 4 does not return to the start position of the outward movement together with the movable unit 20, and the moved rack The 4th position will be held until the next push-out by the hooking claw 21.

Then, as long as the mounting position of the movable unit 20 is set so that at least one hook 21 provided on the movable unit 20 enters the space of the width of the rack grid when the movable unit 20 returns to the outward start position, the cylinder When the rack 22 moves forward toward the main washing section 2 again, the hook 21 pushes the rack 4 in the advancing direction. As a result of the rack 4 being pushed out multiple times by the movable unit 20 along with the reciprocating movement of the piston of the cylinder 22, the rack 4 can be carried into the main washing section 2.

Furthermore, due to the movable range of the cylinder 22 (distance D in FIG. 3(a)) and the size of the rack 4, the entire rack 4 can be accommodated properly in the main washing tank 12 even if the push-out operation is performed multiple times. Sometimes I don't. In such a case, the hook 21 engaged with the side surface of the end of the rack 4 (if there are multiple hooks 21, the hook closest to the main washing tank 12) is attached to the rack in the state shown in FIG. 8(g). Give the final push to 4. Further, a limiter (not shown) is attached to the main washing section 2 at the end position of the rack 4. In the last push operation, the control circuit of the rack transport section 3 receives a signal indicating that the rack 4 has reached the limiter position, and stops transporting the rack 4.

To summarize the above, the method of transporting racks in the dishwasher 100 is such that (i) the center of gravity of the hook 21 is unbalanced, and if no load is applied to the hook 21, a special mechanism and Even without control, the hook 21 can stand up naturally and engage the rack 4; (ii) the movable unit 20 always pushes the rack 4 in the direction of the main washing section 2 as the cylinder 22 extends (outward); (iii) When the cylinder 22 returns to its original position (return path), the hook 21 rotates only in the direction of disengaging from the rack 4, so the rack 4 does not follow the movement of the cylinder 22. (iv) The rack 4 is intermittently carried into the main washing section 2 through repeated reciprocating movements of the cylinder.

Rack conveyance by intermittent extrusion control based on the reciprocating motion of the cylinder 22 and the movable unit 20 has the effect of reducing the size of the entire dishwasher 100. If the rack 4 is to be carried into the main washing section 2 without reciprocating the cylinder 22, a cylinder with a movable range corresponding to the outer frame width of the rack is required, and as a result, the prewash section 1 that accommodates the cylinder The rack transport section 3 becomes large. In the dishwasher 100 of this embodiment, even if the size of the rack 4 is large, this can be handled by increasing the reciprocating motion of the cylinder, and there is no need to increase the cylinder length. The width of the pre-washing section 1 itself can be narrower than the width of the rack 4. Therefore, it is not necessary to provide a large width prewash tank, and a compact dishwasher 100 can be realized.

(Other embodiments)
An application example of the hook 21 used in the dishwasher 100 is shown below.
Although the above-described embodiment has been described as a case in which the hook engages with the grid on the bottom surface of the rack, the engagement point does not necessarily have to be on the bottom surface. For example, if the cylinder 22 is arranged so that the movable unit 20 moves along the side surface of the pre-washing section 1, by adjusting the weight balance when the hooking claw moves sideways, the hooking claw can be moved in the grid space on the side as well as on the bottom surface. It is also possible to modify it so that it is caught.

Moreover, the hooking claw 21 in the movable unit of the above-described embodiment had a structure in which the claw naturally stands up when not receiving any load force due to the biased center of gravity. In another embodiment, instead of this structure, the direction of the claw is determined by a hooking claw having a spring as shown in FIGS. 9(a), (b) and FIGS. 10(a), (b).

FIGS. 9A and 9B show a hook 31 in which a torsion spring 32 is attached to a rotating rod 33. The hooking claw 31 rotates about the rotating rod 33 passed through the hole in the hooking claw 31 as a rotation axis, but since it is supported by the stopper 34, if a load force is applied to the hooking claw 31, the arrow in FIG. 9(a) Rotate within the range shown in . When the hooking claw 31 is not in contact with the rack, the hooking claw 31 is no longer subjected to any load force, and therefore stands up due to the reaction force of the spring, as shown in FIG. 9(b).

FIGS. 10(a) and 10(b) show a hook using a tension spring 41. Similar to FIG. 9(a), when a load force is applied to the hook shown in FIG. 10(a), the hooking claw shown in FIG. 10(a) rotates in the range shown by the arrow with the rotating rod 40 as the rotation axis. Since the tension spring 41 pulls the hook in the direction of the arrow shown in FIG. 10(b), when the hook no longer receives the load force from the rack, it rotates around the rotating rod 40 as shown in FIG. 10(b). Keep the nails upright.

In the case of a hook using a spring mechanism as shown in FIGS. 9 and 10, there is no need to consider the weight balance like the structure of the hook 21, so there are no restrictions on the shape and weight balance of the hook, and there is no restriction on the shape and weight balance of the hook. Can be shaped. It is also possible to attach an accessory to the rack and push out the rack while engaging the claw with the accessory.

(Applicability to different types of dishwashers)
In order to explain the dishwasher according to the present invention, the embodiments described above are based on a dishwasher with a pre-washing function. On the other hand, the reciprocating movement of the piston of the cylinder and the engagement relationship between the hook and the rack at that time can also be applied to rack conveyance in a dishwasher without a pre-washing function. Specifically, if the movable unit 20, the hook 21, the cylinder 22, etc. shown in FIG. Automatic transport of racks into the main washing tank of dishwashers can be realized.

1 Prewash section 2 Main wash section 3 Rack transport section 4 Rack 5 Installation stand 6 Opening 7 Opening 8, 16 Nozzle 9 Water pipe 10 Water supply pipe 11 Prewash tank 12 Main wash tank 13 Outer frame of main wash section 14 Loading stand 15 Guide mechanism 17 Water supply pipe 20 Movable unit 21 Hook claw 22 Cylinder 23 Support member 24 Guide shaft 32 Torsion spring 41 Tension spring 100 Dishwasher

Claims (7)

A dishwasher equipped with a pre-washing means and a main washing means,
a container for accommodating items to be cleaned;
In order to automatically transport the container through a prewash means having a prewash tank to a main wash means having a main wash tank separated from the prewash tank , the container is connected to the prewash tank or A container conveyance means controlled to advance intermittently along the expansion and contraction movement of a cylinder mechanism that makes piston movement in the horizontal direction until reaching the main washing tank position;
a movable member interlocking with a support member connected to the cylinder mechanism, the movable member repeatedly moving forward and backward in accordance with the expansion and contraction operations of the cylinder mechanism;
an engagement member disposed on the movable member, which engages with the container in one direction of piston movement of the cylinder mechanism, and disengages with the container in the opposite direction to the one direction; the engaging member that causes
A position adjustment member placed between the support member and the movable member, the position of the engagement member with respect to the support member being variable by adjusting the position of the movable member attached to the position adjustment member. the position adjustment member;
Equipped with
The engaged state and the disengaged state are formed by the rotational movement of the engaging member, and rotation restriction is activated when a part of the engaging member contacts the bottom surface of the container or the bottom surface of the movable member. A dishwasher , characterized in that the engaging member has a shape that prevents rotation without requiring a rotation preventing member . The dishwasher according to claim 1, wherein the position adjustment member has a mounting hole for changing the mounting position of the movable member, and the position of the engaging member is adjusted according to selection of the mounting hole. . When the container advances toward the prewash tank or the main wash tank, a portion of the engaging member comes into contact with the bottom surface of the movable member to restrict rotation, and the container moves forward toward the prewash tank or the main wash tank. The dishwasher according to claim 1 or 2, wherein when retreating from a tank or the main washing tank, a portion of the engaging member comes into contact with a bottom surface of the container, thereby regulating rotation. The dishwasher according to claim 1 or 2, wherein the center of gravity of the engagement member is set to be biased so that the engagement state occurs when there is no load force on the engagement member. When the engaged state occurs, a part of the engaging member protrudes from the bottom surface of the container and comes into contact with the container, and at the same time, another part of the engaging member comes into contact with the bottom surface of the container. The dishwasher according to claim 4, wherein the center of gravity and shape of the engaging member are determined so as to make contact with each other. The dishwasher according to claim 5 , wherein a movable range of the cylinder mechanism is smaller than a width of the container and the prewash means in the movable direction. The dishwasher according to claim 1 or 2 , wherein the engaging member includes a spring mechanism, and uses a spring force to switch between the engaged state and the non-engaged state with the container.

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