JPH0515921U - Liquid energizer - Google Patents

Abstract

(57) [Summary] [Purpose] Without increasing the number of parts or increasing the cost,
It is possible to easily adjust the discharge pressure of the liquid. When the nozzle 37 is attached to the apparatus main body 10, the nozzle 37 is attached to the upper recess 36a of the nozzle fitting portion 36.
Alternatively, it is fitted in the lower recess 36b so that it can be freely inserted into and removed from the apparatus body 10 in two steps. Then, the discharge pressure of the liquid can be adjusted by appropriately opening / closing the return hole 36c for returning a part of the liquid to the inlet side of the pump by opening / closing the nozzle 37.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a liquid urging device such as an oral hygiene device that drives a pump to urge a liquid and discharge the liquid from a nozzle.

[0002]

[Prior Art]

 For example, in a conventional oral hygiene apparatus, as shown in FIG. 6, a nozzle 1 is detachably attached to an apparatus main body 2 and a pump (not shown) in the apparatus main body 2 is urged to discharge a liquid from the nozzle 1. The discharged liquid was used to cleanse and massage the oral cavity. Further, in this conventional oral hygiene apparatus, a plurality of nozzles 1 having different cross-sectional areas of the flowing water channel 1a are provided, and one of them is selected and attached to the apparatus main body 2 as necessary. Thereby, the pressure of the liquid discharged from the nozzle 1 is adjusted.

[0003]

[Problems to be solved by the device]

 However, in the conventional oral hygiene apparatus described above, the nozzle has to be replaced each time the pressure of the liquid is adjusted, which is troublesome. In addition, the number of parts is increased by the number of nozzles and the cost is increased.

Therefore, an object of the present invention is to make it possible to easily adjust the liquid discharge pressure without increasing the number of parts and increasing the cost.

[0005]

[Means for Solving the Problems]

 Therefore, the present invention is directed to a liquid urging device in which a nozzle 37 is attached to an apparatus main body 10 and a pump 25 in the apparatus main body 10 urges a liquid to eject the liquid from the nozzle 37, as shown in the following illustrated embodiments. In addition, the nozzle 37 can be freely inserted into and taken out of the apparatus main body 10 in a plurality of stages, and a part of the liquid urged by the pump 25 is returned to the inlet side of the pump 25 such as a reflux hole 36 c. It is characterized in that the passage can be opened and closed by inserting and removing the nozzle 37.

[0006]

[Action]

 Then, in the liquid urging device of the present invention, the nozzle 37 is appropriately put in and taken out from the device main body 10 to open and close the reflux passage, and the pressure of the liquid discharged from the nozzle 37 is adjusted.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 5 shows a handy oral hygiene device according to an embodiment of the present invention. Reference numeral 10 in the figure denotes an apparatus body that can be held by one hand. The apparatus main body 10 includes a main body case 11, and an upper case 12 and a lower case 13 above and below the main body case 11, respectively. A unit housing portion 14 is provided on one side from the main body case 11 to the lower case 13, and the elongated drive unit 15 is detachably housed therein. On the other hand, on the other side from the main body case 11 to the lower case 13, a battery storage portion 16 is provided, and two batteries 17, 17 are detachably stored therein.

The drive unit 15 mounts a drive motor 20 on a plate-shaped substrate 19. Then, the crown gear 22 is meshed with the motor gear 21 of the drive motor 20, and the crown gear 22 is rotatably supported by the fixed shaft 23 standing on the substrate 19. The crown gear 22 is eccentrically mounted, and one end of a crank 24 is rotatably attached. A piston 26 of a pump 25 is attached to the other end of the crank 24. The pump 25 is mounted on the substrate 19. Then, the substrate 19 is covered with a semi-cylindrical cap 27, and the drive motor 20, the crown gear 22, the pump 25 and the like described above are housed in a unit case 28 composed of the substrate 19 and the semi-cylindrical cap 27. A positive terminal plate 29 and a negative terminal plate (not shown) are provided on the outside of the unit case 28 so as to be connected to the drive motor 20. Then, two switch springs 30 and 31 are extended in parallel from the positive terminal plate 29. Then, the drive unit 15 is inserted into the unit housing portion 14 of the main body case 11 from below. Then, as shown in FIG. 5, the switch vanes 30 and 31 are extended upward, the pump 25 is arranged downward, and the pump body 25 is housed in the apparatus main body 10.

On the other hand, for the battery 17, the battery lid 33 of the lower case 13 shown in FIG. 5 is removed, and the battery 17 is inserted into the battery housing portion 16 of the main body case 11 from below. Then, the two are arranged in parallel with the drive unit 15 and accommodated in series in the apparatus main body 10. Then, the positive side of the battery 17 is connected to the tip of the positive terminal plate 29, the negative side is connected to a negative terminal plate (not shown), and the positive side of the battery 17 is electrically connected to the drive motor 20 of the drive unit 15.

By the way, as can be seen from FIG. 5, a tank chamber 34 is formed in the main body 10 of the apparatus from the upper portion to the storage unit for the drive unit 15 and the battery 17. Then, the tank chamber 34 is connected to the inlet side of the pump 25.

Now, in such an oral hygiene apparatus, as shown in FIG. 5, a concave portion is provided in an upper portion of the apparatus main body 10, that is, a top portion of the upper case 12, and the nozzle holding portion 35 is formed therein. A plurality of liquid supply holes 35 a that communicate with the tank chamber 34 are formed in the nozzle holding portion 35. Further, a nozzle fitting portion 36 is provided downward from the nozzle holding portion 35. As shown in FIG. 1, the nozzle fitting portion 36 has an annular upper recess 36a and an annular lower recess 36b formed on the upper and lower sides of the inner periphery thereof, respectively. A reflux hole 36c communicating with the tank chamber 34 is provided between the upper and lower concave portions 36a and 36b on one side (right side in the drawing) of the nozzle fitting portion 36. Then, the attachment base portion 37a of the nozzle 37 is fitted to the nozzle holding portion 35, the base end 37b of the nozzle 37 is fitted to the nozzle fitting portion 36, and the nozzle 37 is detachably attached to the apparatus main body 10. An O-ring 38 is attached to the base end 37b of the nozzle 37. Then, the O-ring 38 is fitted into the lower concave portion 36b, and the space between the nozzle 37 and the nozzle fitting portion 36 is kept liquid-tight. Then, when the base end 37b of the nozzle 37 is pulled upward, the O-ring 38 is fitted into the upper recess 36a above the reflux hole 36c, whereby the nozzle 37 is vertically arranged in two steps with respect to the apparatus main body 10. You can move in and out freely. Further, one end of the connecting tube 39 is connected to the lower end of the nozzle fitting portion 36. The connecting tube 39 has the other end (not shown) extended through the inside of the tank chamber 34 and is connected downward to the discharge side of the pump 25.

As shown in FIG. 5, a switch 40 can be attached to the upper part of the main body case 11. The switch 40 has a tip facing the tip of one of the switch springs 30, and is biased outward by a return spring 41 to project the head 40a to the outside. When the switch 40 is pushed against the return spring 41, the two switch springs 30 and 31 are brought into contact with each other to drive the drive motor 20.

Now, when using this oral hygiene apparatus, a liquid such as water or a chemical solution (for example, an oral cleaning solution or a liquid obtained by diluting it) is poured from the nozzle holding portion 35 of the upper case 12 shown in FIG. It is put into the tank chamber 34 through the liquid hole 35a. Then, after the tank chamber 34 is filled with the liquid, the base end 37a of the nozzle 37 is inserted into the nozzle fitting portion 36 and the mounting base portion 37a is fitted into the nozzle holding portion 35 to close the liquid supply hole 35a. Then, the apparatus body 10 is held by the user's hand to bend forward, the nozzle 37 is directed into the oral cavity, and the switch 40 is pushed. As a result, the drive motor 20 is driven, the motor gear 21 is rotated, the crown gear 22 is rotated, and the piston 26 is reciprocally moved through the crank 24 to reverse the bias spring 43 in the suction stroke. The stop valve 44 is opened to draw the liquid from the tank chamber 34. On the other hand, in the discharge stroke, the check valve 44 is closed and the drawn liquid is sent upward through the connecting tube 39, jetted from the nozzle 37 and discharged into the oral cavity. Then, the inside of the mouth is cleaned and a refreshing feeling is given to the inside of the mouth. When the switch 40 is released, the return spring 41 causes the switch 40 to automatically return. Then, the contact between the two switch springs 30 and 31 is released, the drive of the drive motor 20 is stopped, the operation of the pump 25 is stopped, and the ejection of the liquid from the nozzle 37 is stopped.

Here, when adjusting the pressure of the liquid discharged from the nozzle 37, the nozzle 37 is appropriately taken in and out of the apparatus main body 10 to open and close the reflux hole 36c. That is, for example, when increasing the pressure, the nozzle 37 is pushed in to fit the O-ring 38 into the lower recess 36b as shown in FIG. 1, and the return hole 36c is closed. Then, at the time of use, the liquid biased by the pump 25 flows only into the nozzle 37 and is discharged from the nozzle 37 with a high pressure. On the contrary, when lowering the pressure, as shown by the arrow in FIG. 1, the nozzle 37 is pulled up to fit the O-ring 38 into the upper recess 36a, and the return hole 36c is opened. Then, this time, the biased liquid flows into the nozzle 37, while a part of the liquid flows back from the reflux hole 36c through the tank chamber 34 to the inlet side of the pump 25. That is, the recirculation path formed from the recirculation hole 36c through the tank chamber 24 to the inlet of the pump 25 is recirculated. Then, the amount of the liquid flowing into the nozzle 37 is reduced, and the discharge pressure of the liquid is reduced.

By the way, in the above-described embodiment, the O-ring 38 is fitted into the upper recess 36a or the lower recess 36b of the nozzle fitting portion 36 so that the nozzle 37 can be freely inserted and removed in two steps. The reflux hole 36c is opened and closed. However, in this consideration, instead of the above-described embodiment, it is possible to configure as shown in FIGS. 3 and 4, for example.

That is, in the handy oral hygiene apparatus according to the other embodiment, the upper concave portion 35b and the lower concave portion 35c are provided on the inner circumference of the nozzle holding portion 35, while the convex portion 37c is formed on the lower end outer circumference of the attachment base portion 37a of the nozzle 37. Set up. Further, the mounting base 37a is provided with a plurality of slits 50 in the lengthwise direction thereof to impart elasticity to the mounting base 37a. Then, when the nozzle 37 is attached, the convex portion 37c is fitted into the upper concave portion 35b or the lower concave portion 35c so that the nozzle 37 can be freely taken in and out in two stages.

When adjusting the discharge pressure of the liquid to a high level, the nozzle 37 is pushed in to fit the convex portion 37c into the lower concave portion 35c, and the return hole 36c is closed, as shown in FIG. On the contrary, when lowering the discharge pressure, the nozzle 37 is pulled up as shown by the arrow in FIG. 3, the convex portion 37c is fitted into the upper concave portion 35b as shown in FIG. 4, and the reflux hole 36c is opened.

In each of the illustrated embodiments described above, one return hole 36c is provided, and the nozzle 37 can be freely moved in and out of the apparatus main body 10 in two steps, and the return hole 36c can be opened and closed by the insertion and removal. To do. However, in this invention, a plurality of such return holes are provided, and the nozzle can be freely inserted into and removed from the apparatus main body in three or more stages, and by opening and closing an appropriate number of the return holes, the liquid can be The discharge pressure may be adjusted in multiple stages.

[0019]

[Effect of the device]

 Therefore, according to the present invention, the nozzles can be freely moved in and out of the apparatus main body in multiple stages, and the pressure is adjusted by opening and closing the liquid recirculation path by the inflow and outflow. It is possible to prevent an increase in the number of parts and cost, and to easily adjust the discharge pressure of the liquid.

[Brief description of drawings]

FIG. 1 is a partial vertical cross-sectional view showing a handy oral hygiene device according to an embodiment of the present invention in a state where a reflux hole is closed.

FIG. 2 is a partial vertical cross-sectional view showing the oral hygiene device in a state where a reflux hole is open.

FIG. 3 is a partial vertical cross-sectional view showing a handy oral hygiene device according to another embodiment of the present invention in a state where the reflux hole is closed.

FIG. 4 is a partial vertical cross-sectional view showing the oral hygiene device in a state where the reflux hole is open.

FIG. 5 is an overall vertical sectional view of the oral hygiene device.

FIG. 6 is a vertical cross-sectional view of a nozzle of a conventional oral hygiene device.

[Explanation of symbols]

 10 Device Main Body 25 Pump 36c Reflux Hole 37 Nozzle

Claims (1)

[Scope of utility model registration request] 1. A liquid urging device in which a nozzle is attached to an apparatus main body and a pump in the apparatus main body urges the liquid to be discharged from the nozzle, and the nozzle can be freely taken in and out of a plurality of stages with respect to the apparatus main body. In addition, the liquid urging device is configured such that a reflux passage for recirculating a part of the liquid urged by the pump to the inlet side of the pump can be opened and closed by inserting and removing the nozzle.