JP2008200388A - Drawer type dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure the tightening force to a lid body of a dishwasher regardless of various assembly errors, and to securely prevent the tightening force to the lid body from becoming excessively large. <P>SOLUTION: In the drawer type dishwasher, a washing tub 2 is supported in a washer body 1 via rails in such a way as can be take out/retracted, and the lid body 3 with packing on the lower face is supported in the washer body 1 in such a way as can be lifted up/down. The lid body 3 is lowered to be closed against a lid opening spring with the cam action of an inclined cam 11 and a cam roller 31 when the washing tub 2 is forced into the washer body. Assuming the drawer type dishwasher with the above structure, the cam roller 31 is supported as can be lifted up/down in a prescribed range by a guide means of the lid body 3. The cam roller 31 is connected to the lid body 3 via a cam spring, and is energized upward by the cam spring. The cam roller 31 is retained at an upper end position of the guide means with the preload of the cam spring. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a drawer-type dishwasher, and in particular, to a lid opening / closing operation mechanism. There is a packing on the lower surface of the lid, and the lid is moved up and down in conjunction with the operation of inserting and removing the washing tub. For dishwashers that open and close, the sealing force of the packing caused by insufficient tightening force is avoided due to insufficient tightening force on the cover due to the assembly error of the cover to the washing tub Damage can be prevented.

The cleaning tank is supported by the left and right rails provided on the bottom of the outer box, i.e., the main body of the cleaning machine, so that the cleaning tank can be freely inserted and removed. In some cases, the packing of the lid contacts the upper edge surface of the cleaning tank and seals between the lid and the cleaning tank.
And, using the four parallel links of front, rear, left and right as the lid support mechanism, the lid is biased forward by a return spring, and the flange at the rear end of the lid is pushed at the rear end by the pushing operation of the cleaning tank. In some cases, the lid is moved backward and downward against the return spring to close the lid (see FIG. 15 of Japanese Patent No. 3789775).

  In addition, the center of the wire spring (opening spring) is attached to the main body of the washing machine, the lid is supported at both front and rear ends, the inclined cam on the outer surface of the washing tank and the cam roller on the outer part of the lid, In the pushing operation, the inclined cam and the cam roller act, and this cam action causes the lid to be pulled down against the wire spring (Japanese Patent No. 3789775). The outline of the latter configuration is as shown in FIGS. 8, 9, and 10, and there are left and right rails R at the bottom of the washing machine main body 201, and the washing tank 202 is supported by the rails R so as to be freely inserted and removed. ing.

The central portion of the wire spring 204 is locked to the side wall surface of the cleaning machine body 201, and the lid 203 is supported by the front and rear ends 204 a and 204 a of the wire spring 204.
The cleaning machine main body 201 has a guide roller 201a, the support plate 205 provided on the left and right sides of the lid body 203 has a longitudinal slot 205a, and the guide roller 201a is fitted in the longitudinal slot 205a. The elevator operation 203 is guided.
Inclined cams 211 are provided on the front, rear, left and right of the cleaning tank 202, and cam rollers 231 facing the cams 231 are provided on the front and rear of the left and right support plates 205 of the lid 203.
When the cleaning tank 202 is pushed in, the cam roller 231 comes into contact with the inclined cam surface 211a of the inclined cam 211 and is pushed down at the final stage of the pushing operation. As a result, the lid 203 is pulled down, the packing p comes into contact with the upper edge surface of the cleaning tank 202, and the cleaning tank is closed.

In the background art, the packing p is fixed to the lower surface of the lid, and when the lid is closed, the packing p abuts on the upper edge surface of the cleaning tank to seal between the upper edge surface of the lid and the cleaning tank. However, if the position of the packing p in the left-right direction with respect to the upper surface of the cleaning tank 202 is shifted, the sealing performance is lowered and water leakage occurs.
The cleaning tank 202 is supported on the bottom surface of the cleaning machine main body 201 by the rail R, and the lid 203 is supported on the cleaning machine main body by a parallel link, a wire spring, or the like, so that the cleaning machine main body 201 of the cleaning tank is supported. Due to the assembly error in the left and right direction and the assembly error of the lid to the washing machine body, a lateral displacement occurs between the lid and the washing tank, and the washing machine body is deformed due to inadequate handling during transportation and installation, etc. The displacement in the left-right direction also occurs due to the deformation of the cleaning tank.

[Prior art 1]
By the way, the invention for the purpose of preventing the positional displacement of the lid with respect to the cleaning tank in the left-right direction is already known, and an example thereof is described in Japanese Patent No. 3275858. This known example is provided with a centering mechanism (position adjustment mechanism) in the left-right direction with respect to the washing machine main body of the washing tank, and the centering mechanism works by the pushing operation of the washing tank. Direction alignment is performed. However, this is to adjust the lateral displacement of the lid relative to the cleaning tank by adjusting the lateral displacement of the cleaning tank relative to the cleaning body. Since there is no function to directly adjust the displacement, as a practical matter, the lateral displacement of the washing tank relative to the washing machine main body is not eliminated, and therefore the accuracy of alignment of the lid with respect to the washing tank is reduced. Inevitable.

[Prior art 2]
In addition, as an invention aimed at preventing a lateral displacement between the lid and the cleaning tank, a lateral centering mechanism (position adjusting mechanism) for the cleaning tank of the lid is provided, and the cleaning tank is pushed in. It is also known that the centering mechanism operates to align the lid body in the left-right direction with respect to the cleaning tank (Japanese Patent Nos. 3417352 and 3417353). Since this adjusts the horizontal position of the lid with respect to the cleaning tank directly, the positioning accuracy of the lid with respect to the cleaning tank is high. An example of this prior art is shown in FIGS.

  This prior art 2 is of a type in which a lid 103 having a packing on its lower surface is supported on the washing machine main body 101 by a parallel link 104. Then, when the cleaning tank 102 is pushed in, the flange 103a projecting downward from the lid body 103 is pushed by the pressing portion 102a at the rear end to cause the lid body 103 to recede against the return spring 103s. A centering mechanism is provided for the dishwasher that is pulled down by the parallel link 104 while retracting 103. This prior art centering mechanism is provided with first guides 102 b at the left and right ends in front of the cleaning tank 102, and second guides 103 b at the left and right ends in front of the lid 103. Is pushed in, the first guide 102b comes into contact with the second guide 103b of the lid 103 from the inside, and the lid 103 is moved in the left-right direction (the direction in which the displacement is adjusted) by the amount displaced in the left-right direction. Push back to adjust the horizontal position relative to the cleaning tank (center ring). Then, near the end of the pushing operation of the cleaning tank, the pressing portion 102a comes into contact with and presses the flange 103a, and the lid 103 is pulled down and closed.

  The above is the outline of the prior art 2. In this prior art 2, the first guide 102b and the second guide 103b come into contact with each other and rub against each other even during the closing operation after the centering, and before the closing of the pushing operation of the cleaning tank. The frictional force between the first guide 102b and the second guide 103b acts until the lid is closed. And when the shift | offset | difference of the left-right direction with respect to the washing tank of a cover body is large, the said friction force becomes a big resistance with respect to pushing operation of a washing tank, and the smoothness of pushing operation will be impaired.

By the way, if the lid is pulled down using a parallel link or inclined cam in the pushing operation of the washing tank, the final tightening force varies greatly depending on the accuracy of the assembly of the lid to the washing tank, and the washing tank The lid closing operation continues until the pushing operation is completed, and the tightening force on the lid of the cleaning tank increases. If the tightening force is insufficient due to an assembly error, the seal becomes defective and leakage occurs. On the other hand, if the tightening force is excessive, the packing is distorted due to strong dragging and damaged early, resulting in water leakage from the cleaning tank. This also causes a problem that the resistance to the pushing operation of the cleaning tank is remarkably increased. And since the thing provided with the centering mechanism like the said prior arts 1 and 2 performs a centering effect | action to the end point of a lid closing operation | movement, said problem is remarkable.
Japanese Patent No. 3789775 Japanese Patent No. 3275858 Japanese Patent No. 3417352 Japanese Patent No. 3417353

  The present invention is based on the premise that the lid body is pulled down by using an inclined cam and a cam roller to close the lid body, and the assembly error of the lid body to the cleaning machine body, the cleaning tank and the lid of the inclined cam mechanism by the inclined cam and cam roller Regardless of various assembly errors such as assembly to the body (hereinafter referred to as “inclination cam mechanism assembly error”), it is possible to avoid a shortage of tightening force on the lid and An object of the present invention is to devise an inclined cam mechanism including an inclined cam and a cam roller so as to surely prevent an excessive amount and prevent a tightening force exceeding a predetermined value.

1. Solution 1
Means 1 for solving the above problem is that the washing tank is supported so as to be freely inserted into and removed from the washing machine main body via a rail, and a lid having a packing on the lower surface is supported so as to be movable up and down on the washing machine main body. On the premise of a drawer type dishwasher in which the lid is lowered by the cam action of the tilting cam and cam roller against the lid opening spring and closed by the cam action of the tank, the following (A) ( B).
(A) The cam roller is supported by a lid guide means so as to be movable up and down within a predetermined range.
(B) The cam roller is connected to the lid via a cam spring and is biased in the upward direction by the cam spring, and the cam roller is moved to the upper end position of the guide means by the preload of the cam spring. Be retained.

The above-mentioned “preload” means a spring force applied in advance by the cam spring being elastically deformed in advance.
The lid body is pulled up by a lid opening spring (see the wire rod spring 204 in FIG. 8) and held in the open position, and the cam roller is in a state in which a predetermined preload is applied by the lid opening spring. In the state, it is held at the upper end position of the guide means.

  When the cam roller comes into contact with the inclined cam, the cam roller is pushed down on the cam surface against the preload, and as a result, the lid is pulled down via the cam spring. At this time, the holding force to the lid by the wire spring (opening spring) is smaller than the preload by the cam spring, so the lid is easily pulled down against the wire spring, and the packing hits the cleaning tank. Touch. After that, since the packing is compressed, the pulling resistance of the lid increases. When the compression amount of the packing increases and the pulling resistance against the lid exceeds the preload of the spring, the cam roller is pulled down against the spring. By pulling down the cam roller, the spring is further distorted, the spring force is increased, and the clamping force against the lid is increased. Then, by appropriately selecting the strength of the spring, the spring force due to the increased strain is suppressed to a necessary limit.

  As described above, the minimum necessary tightening force for the lid is ensured by the preload of the spring, and the upper limit thereof is appropriately suppressed by appropriately selecting the strength of the spring. Therefore, regardless of the assembling error of the tilt cam mechanism, there is no shortage of tightening on the lid, and a required tightening force is ensured and appropriately limited so as not to become excessive.

[Embodiment 1]
In Embodiment 1 of the solution means 1, the guide means supports the shaft of the cam roller so as to be movable up and down, the cam spring is a tension spring, and the cam roller is pulled up by the spring so that the guide means It is holding at the top position.

2. Solution 2
Means 2 for solving the above-mentioned problem is that the washing tank is supported so as to be freely inserted into and removed from the washing machine main body via the rail, and a lid body having a packing on the lower surface is supported so as to be movable up and down on the washing machine main body. On the premise of a drawer type dishwasher in which the lid is lowered and closed by the cam action of the inclined cam and the cam roller against the opening spring by the cam action of the tank, the following (a) ( B).
(A) The inclined cam is supported by the guide means on the side wall of the cleaning tank so as to be movable up and down within a predetermined range
(B) The inclined cam is biased downward by a cam spring, and the inclined cam is held at the lowest position of the guide means under the preload of the cam spring.

The lid is pulled up by the lid spring and held in the open position, and the inclined cam is held at the lower end position of the guide means by a predetermined preload of the cam spring.
Since the preload of the cam spring is larger than the holding force of the wire spring on the lid, when the cam roller comes into contact with the inclined cam, the lid is easily pulled down against the opening spring, and the packing is cleaned. After that, the resistance to lowering the lid increases.
When the compression amount of the packing increases and the pulling resistance against the lid exceeds the preload of the cam spring, the inclined cam is pushed up against the cam spring. By pushing up the inclined cam, the cam spring distortion (compression amount) increases, the spring load (spring force) increases, and the tightening force on the lid increases. However, the increment increases the strength of the spring appropriately. By selecting, it is suppressed within a predetermined range.

  As described above, since the minimum value of the tightening force for the lid is defined by the preload of the spring, and the maximum value is suppressed within a predetermined range by selecting the spring constant of the cam spring, the inclined cam Regardless of the assembling error of the mechanism, a required minimum value is secured and the maximum value is limited to a predetermined range for the tightening force by the tilt cam mechanism on the lid.

Embodiment 1 of the solution means 2 is a guide mechanism in which the guide means supports the block-shaped inclined cam so as to be movable up and down, the cam spring is a compression spring, and the inclination cam is pushed down by the compression spring. Is held at the lowest position of the guide mechanism.
The compression spring can be either a coil spring or a leaf spring. However, the leaf spring has an advantage that the support mechanism for the block-shaped inclined cam is simplified.

The washing tank is supported through the rail so that it can be inserted into and removed from the washing machine body, and a lid with a packing on the lower surface is supported by the washing machine body so that it can be moved up and down. With respect to the drawer-type dishwasher configured to lower and close the lid against the opening spring by the cam action of the cam, the cam roller or the inclined cam is moved vertically to the lid or the washing tank via the spring. By connecting the flexibility, it is possible to prevent the clamping force between the lid and the cleaning tank from being insufficient and excessive.
Therefore, since the tightening force by the inclined cam and the cam roller is defined by the preload of the cam spring, the variation of the tightening force on the lid due to the cam stroke is small, and therefore there is also a seal failure due to insufficient tightening force on the packing. Avoided.
In addition, the packing of the lid body is not dragged back and forth with respect to the washing tank when it is tightened with excessive force, so that the packing is forcibly dragged, resulting in the sealing performance and durability of the packing. It is avoided that the performance is impaired.

   Next, a specific example of the solving means 1 and a specific example of the solving means 2 will be described with reference to the drawings.

The first embodiment is a specific example of the solving means 1 (FIGS. 1 to 4). The washing tank 2 is supported by the washing machine body 1 by a rail R (see rail R in FIG. 8) so that the washing tank 2 can be taken in and out, and a lid 3 is supported by the washing machine body 1 so as to be movable up and down.
The lid 3 is pushed up by a wire spring 4 as an opening spring, and is normally held in the open position. When the washing tank 2 is pushed into the washing machine main body 1, the lid 3 is pulled down against the wire spring 4 by the inclined cam mechanism (by the inclined cam 11 and the cam roller 31).

When the lid 3 is pulled down, the cleaning tank 2 is closed and sealed with the packing p. Support plates 10 are respectively fixed to the left and right sides of the lid 3, and cam rollers 31 are attached to both front and rear ends of the support plate 10. Further, the center of the wire spring 4 is locked to the side wall of the dishwasher main body 1, and the shaft of the guide roller 32 is pushed up at both front and rear ends of the wire spring 4, thereby pushing up the lid 3.
A pair of front and rear inclined cams 11 are provided at the upper ends of the left and right side walls of the cleaning tank 2, inclined guide holes 12 are provided at the upper ends of the left and right side walls of the cleaning machine body 1, and a cam roller 31 and guide rollers 32 are provided on the lid 3. Faces the inclined cam 11, and the guide roller 32 is inserted into the inclined guide hole 12.

When the cleaning tank 2 is pushed into the main body 1 of the cleaning machine, the inclined cams 11 and 11 of the cleaning tank 2 come into contact with the front and rear cam rollers 31 and 31 at the final stage of the pressing stroke, and the cams are pressed by the inclined cam surface 11a. The lid 3 is pulled down via 31. At this time, the guide roller 32 is guided along the guide hole 12 and moves obliquely rearward while moving downward in the inclined guide hole 12. Due to this oblique rearward movement, there is little relative movement backward with respect to the upper edge surface of the cleaning tank 2, and the lid 3 is lowered with respect to the upper edge surface of the cleaning tank 2 in this state. Therefore, the packing p is slightly dragged while being compressed by the backward movement with respect to the lid 3 after the upper edge surface of the cleaning tank 2 contacts the packing p of the lid 3.
The above is a configuration within the scope of the prior art.

A long hole 10d in the vertical direction is provided in front and rear of the support plate 10, and the shaft of the cam roller 31 is fitted in the long hole 10d, so that it can be moved up and down, and a tension spring s1 is used as a cam spring. And is held at the upper end position of the long hole 10d. The tension spring s1 is stretched between the shaft of the cam roller 31 and the hook 10a provided on the support plate 10.
In the first embodiment, the tension spring s1 is a close-contact coil spring, and has an initial tension in the spring characteristics (a rising portion in the characteristic diagram of FIG. 5) and is stretched by 2 mm (point A with an elongation of 2 mm in FIG. 5). The initial tension and the spring constant are set so that the preload at this time is 1 kgf (the load of the spring with respect to the extension amount of 2 mm in FIG. 5).
In this example, the lifting / lowering stroke of the cam roller by the inclined cam 11 (the opening / closing stroke of the lid 3) is 8 to 9 mm, and the standard compression amount of the packing is about 2 to 3 mm. The long hole 10d is long enough to allow the cam roller 31 to move up and down in a slightly longer range than the cam stroke of the inclined cam 11 in consideration of assembly errors such as the inclined cam and cam roller.

  When the washing tank 2 is pushed into the washing machine main body 1 and approaches the end point of the pushing operation, the inclined cam 11 approaches the cam roller 31 and eventually the cam roller 31 rides on the cam surface of the inclined cam 11. The cam roller 31 is pushed down by the cam surface of the inclined cam 11. When the cam roller is pushed down, the lid 3 is pulled down via the tension spring s, and the packing p is tightened.

When the packing p comes into contact with the cleaning tank 2 and is compressed, the resistance to the lowering of the lid 3 increases accordingly. If the pull-down resistance of the lid body 3 is less than the preload (1 kgf in this example) of the tension spring s1, the amount of extension remains the same as the set state, and the lid body 3 is pulled down by the descending stroke of the cam roller 31. When the pulling-down resistance of the lid 3 exceeds the preload of the tension spring s1, the tension spring s1 loses and extends (point A in FIG. 5), and then the spring force according to the extension of the tension spring s1. (The range from the point A to the point B in FIG. 5), and the lid 3 is tightened by the spring force at that time. Finally, the cam roller 31 reaches the horizontal plane of the inclined cam 11 (see FIG. 2, point B in FIG. 5), and the tightening force on the packing becomes constant thereafter.
The guide hole for the cam roller 31 is not necessarily a long hole, and may be a slot 10s as shown in FIG. In the case of the example of FIG. 4, there is an advantage that the cam roller can be easily and easily attached to and detached from the support plate 10.

In the first embodiment, a close coil spring having a strong pretension (which is strongly prestressed and strongly adhered) is employed as the tension spring. However, the tension spring s1 is assembled with a preload applied. Therefore, the contact spring is not necessarily required.
However, when the tension spring s1 is a close coil spring, a large preload can be applied even with a small spring constant. Therefore, the fluctuation range of the tightening force with respect to the packing due to the fluctuation of the elongation amount e (fluctuation due to assembly error, etc.) in FIG. Can be made as small as possible. This is an advantage of using a close coil spring as the tension spring.

   In the above-described first embodiment, the longitudinal holes 22 in the front-rear direction are provided on the left and right sides of the lid 3, and the conical protrusions 23 are provided on the rear upper surface of the cleaning tank 3 to constitute a centering mechanism. Is an example in which the rear left and right cam rollers 31 can be lowered against the tension spring s1 in accordance with the arrangement of the centering mechanism. However, the centering mechanism can be provided on the left and right of the front and rear, and the front and rear and left and right cam rollers can be lowered against the tension spring, which has an even centering effect on the entire lid, Further, it is possible to prevent an excessive tightening force from being applied to the entire lid.

The second embodiment of FIGS. 6 and 7 is different from the first embodiment in that a cam spring is provided on the inclined cam, but other configurations are the same as the first embodiment.
The inclined cam provided on the side surface of the cleaning tank 2 is a hollow cam block 51, and an inclined cam surface is provided on the lower side thereof.
There is a cam holding portion 50 on the side surface of the cleaning tank 2, and the shaft of the cam roller 31 is fixed to the support plate 10 of the lid 3.
A cam block 51 is vertically held by the cam holding portion 50, and a lower surface thereof is in contact with a stopper 52 (see FIG. 6-1). The cam block 51 includes a compression spring s2 as a cam spring. A compression spring s2 is provided between the flange 53 of the cam holder 50 and the bottom surface of the cam block 51, and the preload is set to about 1 kgf.
The “cam holding portion 50” corresponds to the “guidance means” in the solving means 2.

  When the cleaning tank 2 is pushed into the cleaning machine main body 1 and approaches the end point of the pushing operation, the cam block 51 of the cleaning tank 2 approaches the cam roller 31 and eventually the cam roller 31 rides on the cam surface 51a of the cam block 51. become. Thereafter, the cam roller 31 is pushed down by the cam surface 51a of the cam block 51, and the lid 3 is pulled down by the cam roller.

  When the packing p comes into contact with the cleaning tank 2 and is compressed, the resistance to pulling down the lid 3 increases accordingly. When the pull-down resistance of the lid 3 is less than the preload (1 kgf in this example) of the compression spring s2, the lid 3 is pulled down by the downward stroke of the cam roller 31. However, when the preload is exceeded, the compression spring s2 is lost and contracted, and the cam block 51 is pushed up by the cam roller 31, and the lid 3 is tightened by the spring force of the compression spring s2 at that time. Finally, the cam roller 31 reaches the lower horizontal surface of the cam block 51 (see FIG. 6), and the tightening force on the packing p is constant and does not change thereafter. The change in the spring force of the compression spring s2 at this time is the same as the change in the spring force with respect to the change in the extension amount of the tension spring s1 in the first embodiment (see FIG. 5).

  In this example, the cam spring that biases the inclined cam, that is, the cam block 51 downward, is a compression coil spring, but it can also be a leaf spring. When a leaf spring is used, there is an advantage that its spring characteristics can be designed in various ways depending on its structure.

These are the top views of Example 1 or Example 2. FIG. These are XX sectional drawing of the closed state of Example 1. FIG. These are YY sectional drawing of FIG. These are XX sectional drawing of the open cover state of Example 1. FIG. These are YY sectional drawing of a cover open state. These are the elements on larger scale of the example which deform | transformed a part of Example 1. FIG. These are the schematic diagrams which show the spring force of the spring for cams in Example 1. FIG. These are XX sectional drawing of the closed state of Example 2. FIG. These are YY sectional drawing of the closed state of Example 2. FIG. These are XX sectional drawing of the open cover state of Example 2. FIG. These are YY sectional drawing of the open state of Example 2. FIG. These are sectional drawings of background art. FIG. 9 is a partially enlarged view of the state in which the lid body of FIG. 8 moves from open to closed. FIG. 10 is a partially enlarged view of FIG. 9 and a closed state. These are sectional drawings of a prior art. These are the top views of a prior art.

Explanation of symbols

1: Cleaning machine body 2: Cleaning tank 3: Cover body 4: Wire rod spring (opening spring)
10: support plate 10a: hook 10d: long hole 10s: slot 11: inclined cam 11a: inclined cam surface 12: inclined guide hole 22: long hole 23: conical protrusion 31: cam roller 32: guide roller 50: cam holding portion 51: Cam block 52: Stopper 53: Flange E: Initial value of cam spring elongation e: Elongation of cam spring by tilt cam operation l: Elongation amount of cam spring p: Packing s1: Tension spring (Example 1) In close contact coil spring)
s2: compression spring

Claims (8)

The washing tank is supported through the rail so that it can be inserted into and removed from the washing machine body, and a lid with a packing on the lower surface is supported by the washing machine body so that it can be moved up and down. In the pull-out type dishwasher designed to lower the lid against the opening spring by the cam action and close the lid,
The cam roller is supported by the guide means of the lid so as to be movable up and down within a predetermined range,
The cam roller is connected to the lid via a cam spring and is biased in the upward direction by the cam spring. The cam roller is held at the upper end position of the guide means by the preload of the cam spring. There is a pull-out dishwasher. The washing tank is supported through the rail so that it can be inserted into and removed from the washing machine body, and a lid with a packing on the lower surface is supported by the washing machine body so that it can be moved up and down. A drawer-type dishwasher equipped with a centering mechanism that adjusts the position of the lid body in the left-right direction against the washing tank by lowering the lid body against the opening spring by the cam action of the lid. In
The cam roller is supported by a guide means of the lid so as to be movable up and down within a predetermined range,
The cam roller is connected to the lid via a cam spring and is biased in the upward direction by the cam spring. The cam roller is held at the upper end position of the guide means by the preload of the cam spring. There is a pull-out dishwasher.   The guide means supports the shaft of the cam roller so as to be movable up and down, the cam spring is a tension spring, and the cam roller is pulled up by the tension spring and held at the uppermost position of the guide means. The drawer type dishwasher of Claim 1 or Claim 2. The washing tank is supported through the rail so that it can be inserted into and removed from the washing machine body, and a lid with a packing on the lower surface is supported by the washing machine body so that it can be moved up and down. In the drawer type dishwasher designed to lower and close the lid against the opening spring by the cam action of
The inclined cam is supported by the guide means on the side wall of the cleaning tank so as to be movable up and down within a predetermined range.
A drawer type dishwasher in which the inclined cam is biased downward by a cam spring, and the inclined cam is held at the lowest position of the guide means under the preload of the cam spring. The washing tank is supported through the rail so that it can be inserted into and removed from the washing machine body, and a lid with a packing on the lower surface is supported by the washing machine body so that it can be moved up and down. A drawer-type dishwasher equipped with a centering mechanism for adjusting the position of the lid body in the left-right direction against the washing tank by lowering the lid body against the opening spring by the cam action of the lid. In
The inclined cam is supported by the guide means on the side wall of the cleaning tank so as to be movable up and down within a predetermined range.
A drawer type dishwasher in which the inclined cam is biased downward by a cam spring, and the inclined cam is held at the lowest position of the guide means under the preload of the cam spring.   The guide means is a guide mechanism that supports the block-shaped inclined cam so as to be movable up and down, the cam spring is a compression spring, and the inclined cam is pushed down by the compression spring to the lowest position of the guide mechanism. 6. A pull-out dishwasher according to claim 4 or 5, which is held.   The drawer type dishwasher according to claim 2, wherein the tension spring is a close-contact coil spring. There are a concave portion and a convex portion in which the lid and the cleaning tank fit each other, and thereby the centering mechanism is configured,
The centering mechanism is provided on the front left and right or rear left and right,
6. The dishwasher according to claim 2, wherein the inclined cam mechanism including the inclined cam and the cam roller is provided on the front left and right and the rear left and right.

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