JPS5942008Y2 - Connection structure of reservoir in oral irrigator - Google Patents

Description

[Detailed description of the invention] This invention consists of a storage tank that stores liquid that does not harm the oral cavity, a pump that suctions and energizes the liquid, and a tube that connects the pump to its discharge port. The present invention also relates to a connection structure for a storage tank in an oral cavity irrigator including a nozzle for ejecting energizing liquid from a pump toward the oral cavity.

The connection structure of a reservoir used in a conventional oral irrigator is shown in FIG.

That is, the oral irrigator consists of a reservoir A and a main body B on which the reservoir A is placed.

The storage tank A has a bowl shape to store a liquid that does not harm the oral cavity, and has a liquid discharge part 1 on its bottom surface.

The discharge part 1 is formed into a cylindrical shape and protrudes outward from the bottom surface 2a of the bowl part 2, and a step part 1a is provided on the outer periphery of the base part to serve as a guide when fitting into the main body B.

Two step portions 1b and lc are also provided on the inner surface of the discharge portion 1, and the step portion 1b with an enlarged diameter has a strainer 4 having a plurality of pores 3 fixed thereto.

The lower small-diameter stepped portion 1e is finished smoothly to serve as a valve seat, and the valve portion 5 of the valve body 5 is formed between the stepped portion 1b and the stepped portion 1c.
Move a somewhat.

The valve support portion 5b of the valve body 5 is inserted into the discharge passage 6, and a groove provided in the outer circumferential axial direction of the valve support portion 5b becomes a flow channel.

The discharge part 1 is inserted into the connecting part 8a of the cover 8 of the main body B by fitting a gasket T into the middle part of its outer periphery.

An abutting part 8c protruding from the partition plate 8b is provided at the inner middle part of the connecting part 8a, and the abutting part 8c pushes up the valve body 5 when the discharge part 1 is inserted into the connecting part 8a. It looks like this.

A suction part 9a of a pump 9 is fitted below the connection part 8a, and the pump 9 sucks liquid from the storage tank A and squirts it toward the oral cavity from a nozzle (not shown) through a tube 10. According to the connection structure of the storage tank, the valve body and the stepped part that is the valve seat are made of hard material, and high manufacturing precision is required, so when the storage tank is removed from the main body, the valve body is It was difficult to completely shut off the liquid because there was a risk that it would not come in close contact with the valve seat.

Additionally, in order to strengthen the force pressing the valve body against the valve seat, a structure that uses a spring to apply pressure to the valve body has been considered, but there is a limit to the sealing performance between the valve body and the valve seat, resulting in leakage. It is difficult to completely prevent this.

Furthermore, when changing or cleaning the valve body, the stuck strainer must be removed, which is time-consuming.

In addition, since a gasket is used at the joint between the main body and the storage tank, the attachment/detachment force is large and operability is poor.

The present invention aims to provide a connection structure for a reservoir in an oral irrigator that ensures secure connection between the valve body and the valve seat, and that can be easily assembled and disassembled.

The gist of this is that, in the above-mentioned oral irrigator, a storage space for the valve body is provided in the discharge part of the storage tank, and a pore is formed in the wall of the storage space to form a strainer, and the storage tank is provided with a storage space for the valve body. An elastic sealing member is provided at the opening of the space, and the sealing member has a valve seat integrated therewith facing the storage space so that it can come into close contact with the valve body, and a lip is provided on the outer periphery of the sealing member. A connection structure for a reservoir in an oral cavity irrigator, characterized in that the connection part of the main body is brought into contact with the inner wall of the connection part of the main body.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 2 is a sectional view showing the joint between the storage tank C and the main body.

The storage tank C, like the storage tank A in FIG. 1, has a bowl shape to store a liquid that does not harm the oral cavity, and has a discharge part 11 on the bottom surface thereof.

This discharge part 11 is provided with a storage space 14 for the valve body 13 formed in a concave shape from the outside of the bottom surface 12a of the bowl part 12, and a narrow slit hole 15 is formed in the wall surface of the storage space 14 toward the inside of the bowl part 12. A strainer is created by installing multiple .

That is, dirt and the like contained in the liquid in the bowl portion 12 are removed by the slit hole 15, and only the liquid is introduced into the storage space 14.

The valve body 13 is housed so that the valve part 13a can move up and down in the storage space 14, and the outer diameter of the valve part 13a is made slightly smaller than the inner diameter of the storage space 14 to restrict horizontal movement.

The valve support part 13b extending from the valve part 13a has a plurality of axial grooves on its outer surface to form a liquid flow path, and this valve support part 13b is inserted into the center hole 17 of the sealing member 16. .

The seal member 16 is made of vinyl acetate, low density polyethylene,
It is integrally molded using an elastic soft plastic material such as vinyl chloride or a rubber material, and is attached to the opening at the tip of the discharge section 11.

That is, the center of the sealing member 16 is provided with an annular protrusion 16a that faces the storage space 14, and the tip of the annular protrusion 16a is made flat to serve as a valve seat 16b, so that when the valve body 13 is lowered, the valve seat 16b is closed. It comes into close contact with the lower surface of 13a.

The outer edge of the sealing member 16 has a convex engaging part 16c that fits into the concave engaging part 11a provided in the discharge part 11, and the engaging part 11a and the engaging part 16c engage to form a seal. The member 16 is securely fixed to the discharge section 11.

On the outside of the engaging portion 16b, there is a protrusion 16 that gradually increases in diameter.
d is provided.

When this lip 16d is inserted into the concave connecting portion 18 provided on the upper surface of the main body, it presses against the wall surface of the connecting portion 18 to form a seal.

The connecting portion 18 has an abutting portion 1 at the center of its bottom surface 18a.
8b is provided in a protruding manner, and when the discharge part 11 is inserted into the connecting part 18, it is inserted into the center hole 17 and pushes up the valve body 13.

Furthermore, a joint part 18c is provided on the side surface of the connecting part 18 for connecting to a pump (not shown) built in the lower body.

With the above configuration, when the storage tank C is placed on the main body, when the discharge part 11 is inserted into the connection part 18, the abutment part 18b pushes up the valve body 13 and closes the valve. The opening is opened to guide the liquid from the slit hole 15 to the connecting portion 18 .

Furthermore, since the lip 16d of the sealing member 16 is in pressure contact with the wall surface of the connection part 18, the liquid flows out from the joint part 18c to the pump without leaking from the connection part 18 to the outside.

Next, when the storage tank C is removed from the main body, as shown in Figure 3,
The valve body 13 is lowered by the pressure of the liquid and its own weight, and the lower surface of the valve portion 13a comes into close contact with the valve seat 16b of the seal member 16 to prevent leakage of the liquid.

Note that the sealing member 16 maintains the sealing effect here as well, since the outer circumferential surface of the annular convex portion 16a is in close contact with the wall surface of the storage space 14.

Therefore, according to the present invention, since the sealing member is soft, the sealing with the valve body is ensured, and even if the storage tank is removed from the main body, the stored liquid will not leak from the discharge part.

Furthermore, since the lip of the sealing member is soft, it is easy to insert the reservoir into the main body.

Furthermore, since the sealing member can be easily removed from the discharge section, there is an advantage that cleaning of the valve body and the like can be done easily.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the joint structure of the discharge part of the reservoir in a conventional oral irrigator, Figure 2 is a cross-sectional view of the joint structure of the discharge part of the reservoir showing an embodiment of the present invention, and Figure 3 is the discharge part of the reservoir. FIG. C...Storage tank, D...Main body, 11...
...Discharge part, 13... Valve body, 14...
...Storage space, 15...Slit hole, which is a small hole.
16... Seal member, 16b... Valve seat, 16d... Lip, 18... Connection portion.

Claims (1)

[Scope of utility model registration request] A storage tank that stores liquid and has a valve body in a discharge part of the liquid, and a connection part that can place the storage tank and open the valve body when the discharge part is inserted. and an oral cavity irrigator comprising a main body incorporating a pump that sucks the liquid from the connecting part, and a nozzle that squirts the liquid urged toward the oral cavity through a tube connected to the pump,
A storage space for the valve body is provided in the discharge part of the storage tank, a pore is formed in the wall of the storage space to form a strainer, and an elastic sealing member is provided at the opening of the storage space, and The seal member has a valve seat integrated with it.
1. A connection structure for a storage tank in an oral cavity irrigator, characterized in that it faces a storage space and can come into close contact with the valve body, and is provided with a lip on the outer periphery, and the lip is brought into contact with an inner wall of a connection part of the main body.