JPS6239831Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a mounting device for a nozzle pipe for jetting cleaning liquid in a washing machine for tableware and other items.The present invention facilitates the attachment and detachment of the nozzle pipe, and also simplifies the structure of the joint part. This ensures watertightness.

2. Description of the Related Art Washing machines for dishes and the like are already known in which each nozzle pipe is detachable for purposes such as cleaning. For example, an O-ring is attached to a groove formed on the outer periphery of the end of a nozzle pipe,
A cylindrical insertion fitting having a joint surface that joins the O-ring in a watertight manner is provided on the side of the manifold, and the end of the nozzle pipe is inserted into the insertion fitting, so that the manifold and the nozzle pipe are watertight and separated. There are things that can be connected. This requires the use of a thick-walled pipe that can form a groove for mounting an O-ring as the nozzle pipe, and therefore the weight of the entire nozzle pipe becomes considerably large. Therefore, a problem arises in that it is inconvenient to handle the nozzle pipe when it is removed from the manifold for purposes such as cleaning the inside thereof. Furthermore, the manifold has the problem of requiring a considerable amount of effort, such as providing an insertion port fitting that joins the O-ring of the nozzle pipe in a watertight manner.

The gist of this proposal is to taper the outer periphery of the open end of the nozzle pipe connected to the manifold, and to attach a ring-shaped elastic packing to the connection hole of the manifold.

To explain this with respect to the embodiment shown in Figs. 1 to 4, 1 is a washing machine for dishes and other items, and this has a washing chamber 3 penetrating through the upper part of the machine body 2 in the form of a tunnel, and the length of the washing chamber 3 is A conveyor 4 for transporting items to be washed such as tableware is installed in the horizontal direction. Reference numeral 5 denotes a manifold made of a rectangular pipe that stands upright on the side of the conveyor 4 in the cleaning chamber 3. This manifold is closed at its upper end and is supplied with cleaning liquid via a pump from its open lower end. 6 is a connection hole provided on the side of the manifold 5 facing the conveyor 4, and 7 is an elastic ring-shaped gasket made of rubber or the like attached to the connection hole 6, and the entire circumferential length of the outer circumferential surface thereof is The mouth edge of the connection hole 6 is inserted into the groove 8 formed across the connection hole 6, and a packing 7 is fixed to the inner periphery of the connection hole 6. The end edge of the inner circumference of the packing 7 on the inside side of the manifold 5 has a protrusion 9 of a pipe that extends in the axial direction of the packing 7 and is thinner than other parts.
The inner circumferential surface of the manifold 5 is tapered over its entire length so that the outer diameter of the manifold 5 is larger. Then, a connecting portion of one end of the nozzle pipe, which will be described later, is inserted into the opening in the ring-shaped packing 7.

Reference numeral 10 designates a nozzle pipe with one end open and the other end sealed, the open end of which is a connecting portion 11, and the entire outer surface of the connecting portion 11 is tapered with a smaller diameter on the open end side; The diameter is such that it can be inserted tightly into the packing 7, and the closed end is a flattened support portion 12. Then, the connecting part 11 is inserted into the packing 7, and the connecting part 11 is placed almost parallel to the side surface of the manifold 5 to which the packing 7 is fixed, and the space between the connecting part 11 and the manifold 5 is such that the nozzle pipe 10 is installed. A long support hole 14 of the support body 13 fixed to the manifold 2 is formed opposite to the opening of the gasket 7 of the manifold 5.
The support part 12 is inserted into the manifold 5 and the support body 13, and the nozzle pipe 10 is supported between the manifold 5 and the support body 13 in a built-up manner, and the support part 12 is supported against the support body 13. Due to its elasticity, it is tightly joined and installed. 15 is a cleaning liquid spout provided on the surface of the nozzle pipe 10;
These are placed in positions facing the object to be cleaned when the nozzle pipe 10 is attached. 16
is a support plate fixed to the side surface of the manifold 5 at a position where it overlaps with the packing 7, with a slight interval therebetween, and the nozzle pipe 10 is inserted into a receiving hole 17 provided therein that matches the outer diameter of the nozzle pipe 10. The end of the nozzle pipe 10 on the connection part 12 side is supported by a support plate 16. Here, the receiving hole 17 is formed in a positional relationship in which it communicates with the opening in the packing 7, that is, in a positional relationship in which the center lines of the two substantially coincide.

In this embodiment, a protrusion 9 is formed on the packing 7, but this can be removed as in the example shown in FIG. Further, the inner circumferential surface of the packing 7 may be formed into a convex curved surface in the radial direction, as shown in the example shown in FIG. It can be made into the shape of

To separate the nozzle pipe 10 installed between the manifold 5 and the support 13, push it a little harder toward the manifold 5, insert the connecting part 11 deeper into the packing 7, and move the support 12 to the support 13.
After separating from the packing 7, the connecting portion 11 is separated from the packing 7. When installing the nozzle pipe 10,
Contrary to the above, the connecting portion 11 is inserted into the receiving hole 17 of the support plate 16.
is inserted into the packing 7, the support part 12 is aligned with the support hole 14 of the support body 13, and the nozzle pipe 10 is slid toward the support body 13, so that the end on the support part 12 side is The nozzle pipe 10 is mounted between the manifold 5 and the support 13 by being joined and supported by the support 13. Then, Patsukin 7,
With its elasticity, the nozzle pipe 10 is
Since the connecting portion 11 is pressed toward the support body 13 through the connecting portion 13, the entire circumference of the tapered connecting portion 11 is watertightly joined to the inner circumference of the packing 7 due to its elasticity.

As described above, the present invention has a connecting portion 1 which is tapered around the entire circumference at the opening side end of the nozzle pipe 10.
2 makes it possible to watertightly connect it to the ring-shaped packing 7 fixed to the manifold 5. That is, nozzle pipe 1
Since the opening end of the nozzle pipe 10 can only be narrowed down to a slightly smaller diameter, the nozzle pipe 10 itself can be constructed of a pipe with a thickness that has the required strength, and the nozzle pipe 10 can be constructed of a pipe with a thickness that has the required strength. Compared to the case where grooves are formed, a thinner and lighter pipe can be used. Therefore, when the nozzle pipe 7 is separated from between the manifold 5 and the support body 13 in the narrow cleaning chamber 3 in order to clean the inside thereof, or when it is installed, the nozzle pipe 7 can be easily handled. This can make that work easier.

In addition, since the connecting part 11 of the nozzle pipe 10 is tapered, when separating it from the packing 7, just pull the connecting part 11 out of the packing 7 a little, and from then on it will be pushed out by the elasticity of the packing 7. This makes it easier to separate the nozzle pipe 10. Nozzle pipe 10 for manifold 5
The connection is made via the connecting portion 11 and the packing 7, and since the connecting portion 11 is tapered, it is easy to bring the connecting portion 11 into watertight contact with the packing 7. Moreover, even if there is a change in the insertion state of the connecting part 11 into the packing 7,
For example, even if the inner circumferential surface of the packing 7 is worn, the amount of insertion of the connecting part 11 into the packing 7 will only change slightly, but there will be no change in making the two contact watertight, and the nozzle pipe 10 will be attached to the manifold 5. It is possible to ensure a watertight connection to the This is even more appropriate if the inner circumferential surface of the packing 7 is tapered as shown in FIGS. 2-4.

If the length of the packing 7 in the axial direction is increased, it is suitable for increasing the contact area with the connecting part 11, but when the nozzle pipe 10 is attached or detached,
1 becomes somewhat difficult to insert deeply. However, as shown in Figures 2 and 3, if the end of the packing 7 with the smaller inner diameter is made into a pipe-shaped protrusion 9 to facilitate elastic deformation, the length of the packing 7 in the axial direction can be reduced. It can be made longer and the connecting portion 11 can be easily inserted deeply.

Since the gasket 7 made of rubber or the like is fixed to the connection hole 6 of the manifold 5, the structure of the joint portion on the side of the connection hole 6 can also be simplified. In addition, a support plate 16 made of metal or the like through which the nozzle pipe 10 can be inserted is fixed to the manifold 5, and after the nozzle pipe 10 is inserted into this, the connection part 11 is inserted into the packing 7. The gasket 7 can be elastically deformed by the pressure of the supplied cleaning liquid and the nozzle pipe 10 can be prevented from moving in its radial direction, which can contribute to connecting the nozzle pipe 11 to the manifold 5 in a watertight manner. .

[Brief explanation of the drawing]

The drawings show an example of the present invention; Fig. 1 is a front view of the washing machine, Fig. 2 is an enlarged sectional front view, Fig. 3 is an enlarged plan view of the main parts, and Figs. 4 and 5 are different from each other. It is an enlarged cross-sectional view of the main part of the example. 1...Washing machine, 5...Manifold, 7...Packing, 8...Ditch, 10...Nozzle pipe, 1
DESCRIPTION OF SYMBOLS 1... Connection part, 12... Support part, 13... Support body, 14... Support hole.

Claims (1)

[Claims for Utility Model Registration] One end is opened and the open end is used as a connecting part, and the other end is flattened and used as a sealed support part, and the open end side is formed around the entire outer surface of the connecting part. A nozzle pipe is tapered to a small diameter and has a jet nozzle on its surface, and a connection hole is formed, and the connection part of the nozzle pipe is tightly connected to the internal opening as a watertight means at the rim of the connection hole. A manifold to which a ring-shaped elastic packing is fixed, and a ring-shaped elastic packing is fixed to the side of the manifold at a position where it overlaps with the packing. A support plate is provided with a receiving hole that communicates with the opening, and an elongated support hole into which the flat support part of the nozzle pipe is inserted is formed opposite to the receiving hole of the support plate fixed to the manifold. The nozzle pipe is inserted through the receiving hole in the support plate, the connecting part is tightly inserted into the opening in the packing, and A washing machine nozzle pipe installation device in which the support part is inserted into the support hole of the support body.