JPS6013456Y2 - Pump connection structure in oral irrigator - Google Patents

Description

[Detailed description of the invention] The invention consists of a storage tank containing a liquid that does not harm the oral cavity, a pump that suctions and energizes the liquid, and a discharge port of the pump connected via a tube. The present invention relates to a connection structure for a pump in an oral cavity irrigator, which includes a nozzle for ejecting energizing liquid from the pump toward the oral cavity.

The connection structure between a reservoir and a pump used in a conventional oral irrigator is shown in FIG.

That is, the oral irrigator has a storage tank A placed on the main body B, and the storage tank A has a bowl shape in order to store liquid that does not harm the oral cavity, and the bottom surface of the storage tank A has a bowl-like shape for storing liquid that does not harm the oral cavity. Section 1 is provided.

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.

The inner surface of the discharge portion 1 is also provided with two upper and lower step portions 1b and 1c, and the upper diameter-enlarged step portion 1b has a strainer 4 having a plurality of pores 3 fixed thereto.

The lower small-diameter stepped portion 1c is finished smoothly to serve as a valve seat for a valve that shuts off liquid discharge, and the valve portion 5a of the valve body 5 that approaches and separates from the valve seat 1c is stepped with the stepped portion 1b. It is made movable between the part 1c and the part 1c.

The valve support portion 5b of the valve body 5 is inserted into the discharge hole 6, and a groove is provided in the direction of the outer circumferential axis of the valve support portion 5b, and the groove, together with the discharge hole 6, serves as a liquid flow path.

The discharge part 1 has a gasket 7 fitted in the middle part of its outer periphery, and is inserted into a connecting part 8a protruding from the cover 8 of the main body B to maintain waterproofness.

An abutment part 8C is provided that projects upward from the partition part 8b provided at the inner intermediate part of the connection part 8a, and the abutment part 8c pushes up the valve body 5 when the discharge part 1 is inserted into the connection part 8a. It looks like this.

A suction port 9a of a pump 9 is fitted below the connection portion 8a, and the pump 9 sucks the liquid in the storage tank A from the suction port 9a and energizes it through a tube 10 connected to a discharge port 9b. It is ejected toward the oral cavity from the omitted nozzle.

However, according to the connection structure of conventional oral irrigators,
The connection part that protrudes from the cover of the main body directly connects the discharge part of the storage tank and the inlet of the pump, so although the inlet is firmly connected, vibrations generated by the pump are transmitted to the main body and the storage tank. This makes it difficult to use.

Furthermore, since the suction port is directly fitted into the connection part, the mounting position of the pump must be adjusted and fixed later, which takes time and effort during assembly.

Furthermore, the structure of the connection part becomes complicated, and the discharge part and the suction port have to be provided with their own waterproof packing, which increases the number of manufacturing steps.

The present invention aims to solve the above-mentioned deficiencies, simplify assembly, and provide a connection structure for a pump in an oral irrigator that prevents transmission of vibrations generated by the pump.

Therefore, the gist of the present invention is to fit the discharge part 12 of the storage tank C containing liquid into the connection part 19 of the main body,
At this time, the valve body 15 provided in the discharge part 12 is pushed up and opened, and the liquid in the storage tank C is supplied to the pump 22 in the main body, and the pump 22 is energized to send the liquid from the nozzle at the tip of the tube to the oral cavity. In the oral cavity irrigator, the discharge part 12 and the pump 22 are connected by a joint E integrally made of a soft elastic member, and a flow passage 20 formed in the joint E is used to connect the discharge part 12 and the pump 22 to the reservoir tank. A cylindrical part 17a which is compressed between the connecting part 19 and the discharge part 12 to prevent the liquid from leaking between the two, and a cylindrical part 17a in the center of the cylindrical part 17a, which leads the liquid C to the pump 22, and which is compressed between the connecting part 19 and the discharge part 12 at one end of the joint E. Connection of a pump in an oral irrigator in which a joint part 17 is formed with an abutting part 17b that pushes up the valve body 15, and a suction joint part 23 that fits into the suction port 22a of the pump 22 is formed at the other end. It's in the structure.

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

In FIG. 2, the storage tank C has a bowl part 11 for storing liquid that does not harm the oral cavity, and a discharge part 12 that projects downward is provided on the bottom surface 11a of the bowl part 11.

The discharge part 12 has a substantially cylindrical shape, and a strainer 1 is installed at the top of the discharge part 12.
3, and a valve body 15 of the valve is housed in the inner space 14.

Further, a sealing member 16 made of soft rubber, for example, is fitted to the end of the discharge portion 12.

That is, the seal member 16 has a valve seat 16a facing the space 14, and the end of the discharge part 12 is fitted into a groove provided in the peripheral edge.

Then, the outer periphery is brought into contact with the joint portion 17 of the joint E, and the joint E is inserted and removably inserted.

The joint part 17 of the joint E has a cylindrical part 17a, and the discharge part 12
The sealing member 16 fitted into the body and the cover 18 on the main body
It is held between a connecting portion 19 that protrudes inward from a.

At the center of the cylindrical portion 17a, an abutment portion 17b that abuts against the lower end surface of the valve body 15 is provided to protrude upward, and when the discharge portion 12 is inserted into the cylindrical portion 17a, the abutment portion 17b 17
b pushes up the valve body 15 and causes the liquid to flow into the flow path 20.

The flow passage 20 is formed in the bottom surface 17c of the joint part 17 in which the abutting part 17b is provided, and is arranged in multiple stages around the abutting part 17b.

The space 21 through which the flow path 20 communicates is the suction port 2 of the pump 22.
This is where the suction joint 2a is inserted, and the cylindrical suction joint 23
form.

The pump 22 is a reciprocating pump, and a valve seat chamber 26 is provided at the suction port 22a, and the suction valve 24 is disposed so as to be movable within the valve seat chamber 26. This prevents liquid from flowing out during the discharge process.

Furthermore, a bypass passage 27 communicating with the space 21 is provided at the side of the suction port 22a.

This bypass passage 27 communicates with a pressure regulating valve 30 provided between the cylinder chamber 28 and the liquid outflow passage 29, and is connected to the pump 22.
During the discharge process, the liquid is released into the bypass passage 27 to keep the discharge pressure constant.

The amount of liquid released to the bypass path 27 can be adjusted using the external control knob 3.
This is done by determining the valve opening amount of the pressure regulating valve 30 in step 1.Furthermore, the joint E has a concave space 2 on the side of the suction joint 23.
5 is set.

Providing this concave space 25 has the advantage that since the joint E becomes flexible, the vibrations generated by the pump 22 are sufficiently absorbed by the joint E and are less likely to be transmitted to the connecting part 19 and the discharge part 12.

The joint E consisting of the joint portion 17, the flow path 20, and the suction joint 23 is obtained by integrally molding a soft material having elasticity such as rubber.

From the above description, according to the present invention, the joint part is clamped by fitting the joint part into the annular connecting part of the cover and inserting the discharge part which can be inserted and removed into the joint part.

Then, the suction joint portion is connected by fitting into the suction port of the pump.

Therefore, the connection between the discharge part and the suction port can be easily made by interposing a joint, and there is no need to adjust the set position of the pump later, so that the number of assembly steps is reduced.

The coupling also prevents vibrations generated by the pump from being transmitted to the cover and reservoir, resulting in an easy-to-use oral irrigator.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view showing a pump connection structure in a conventional oral irrigator, and FIG. 2 is a partial sectional view showing a pump connection structure in an oral irrigator according to an embodiment of the present invention. C...Storage tank, D...Main body, E...
Joint, 12...Discharge part, 15...Valve body, 17...Joint part, 17a...Cylindrical part, 17b...Butt Atatebu, 18 songs/covers,
19... Connection section, 20... Distribution path, 2
2...Pump, 22a...Suction port, 2
3...Suction joint part.

Claims (1)

[Scope of utility model registration request] Connect the discharge part 12 of the storage tank C containing liquid to the connection part 1 of the main body.
At this time, the valve body 15 provided in the discharge part 12 is pushed up and opened, and the liquid in the storage tank C is supplied to the pump 22 in the main body, and the pump 22 is energized to release the liquid at the tip of the tube. In the oral cavity irrigator which ejects water from a nozzle toward the oral cavity, the discharge part 12 and the pump 22 are connected by a joint E integrally made of a soft elastic member, and a flow path 20 is formed in the joint E. A cylindrical portion 17a is provided at one end of the joint E to guide the liquid in the storage tank C to the pump 22, and is compressed between the connection portion 19 and the discharge portion 12 to prevent liquid leakage therebetween. A joint part 17 is formed at the center of the valve body 17a and an abutment part 17b that pushes up the valve body 15, and the other end is formed with a joint part 17 consisting of an abutment part 17b that pushes up the valve body 15, and a suction port 22 of the pump 22 at the other end.
A connection structure for a pump in an oral irrigator formed by forming a suction joint part 23 that fits into a.