JPH0144612Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Subject of the Invention] This invention relates to a cylinder for a human body private part cleaning device, and particularly relates to an improvement in its operation.

[Prior art]

Human body private parts cleaning device (hereinafter simply referred to as cleaning device)
In this case, when the nozzle tip returns to its original position after cleaning, the pressure water must pass through gaps in the sliding parts, etc.
It takes some time for the nozzle to return. For this reason, when switching from bidet cleaning to anal cleaning, there is an inconvenience in that a waiting period is required until the nozzle returns to its original position. One example of a solution to this problem is the prior art described in Japanese Patent Application No. 115596/1982. In this technique, as shown in FIG. 1, in the case of anal irrigation, irrigation water enters an inlet 1, passes through a central pipe 2, and flows into an axial hole 3a of a nozzle 3. Since the water pressure flowing into the shaft hole 3a is still low, the low pressure valve 4 remains closed. Therefore, the inflow water flows backward through the central hole 5b of the rear end 5a of the small piston 5 and flows into the movable cylinder 6 chamber. A rubber seal 8 is held by a stopper 9 in the rear end recess of the large piston 7 having a small central through hole 7a in the center on the small piston 5, and the rubber seal 8 connects the movable cylinder 6 chamber and the fixed cylinder 10.
The tube of the chamber is sealed and no water enters the fixed cylinder chamber.

11 is a water tank, 11a is a stepped recess formed inside the tank, and the central pipe 2 is fixed in a watertight manner to the central recess 11b by a ring-shaped fixture 12 and a rubber seal 13. Further, 14 is an O-ring that keeps the rear end of the fixed cylinder 10 inserted into the stepped recess 11a watertight, and 15 is a seal ring provided on the outer periphery of the large piston 7.

Reference numeral 16 denotes a spherical check valve, which is disposed above the drain port 17 and discharges residual pressure water from the back of the large piston after bidet cleaning is completed.

[Problems with conventional technology and their technical analysis]

In this structure, water is pumped only into the inlet 1 during anal cleansing. This water is supplied to the back of the small piston 5 through the central pipe 2 and pushes out the small piston 5 and the nozzle 3. However, if the rubber seal 13 or O-ring 14 is damaged, this water will It gradually acts on the back side of the large piston 7 through the O-ring 14 and pushes out the large piston 7 little by little,
There was a risk that the product would shift or migrate to the bidet cleaning position.

Therefore, there was a risk that the movable cylinder 6 would move toward the bidet cleaning direction.

[Technical issues]

The object of the present application is to eliminate the concerns associated with the above device using simple means without requiring any separate parts.

[Technical means]

In order to solve the above problem, the present invention provides a groove of a predetermined length in the inner diameter portion of the piston, which matches the position where the inner diameter rear end of the fixed cylinder, that is, the maximum diameter portion of the large piston rests when the cleaning device is not in operation. It has been established.

[Effect of technical means]

FIGS. 2 and 3 show the groove portion 19, which is the gist of the present invention. By providing this groove 19, even if water leaks from the seals 14, 15 or the check valve 16 and reaches the rear of the large piston 7, the water will leak from the groove 19 to the space in the fixed cylinder 10. 10a
The air is discharged to the atmosphere through the gap between the spacer 20 and the movable cylinder 6.

[Special effects produced by the present invention]

Therefore, the nozzle returns to its original position smoothly due to the action of the spherical check valve, and even if water leaks from the check valve sealing member, etc., the nozzle can be cleaned easily when using the shower or by washing the bidet. The fear of shifting towards the future will be resolved.

By narrowing the opening area of the groove 19 to the front space 10a, water acting on the back surface of the large piston 7 during bidet cleaning can be used to push out the large piston 7 while leaking to the front space 10a. Becomes exposed. When the amount of extrusion of the large piston 7 exceeds a predetermined value, the communication between the groove 19 and the front space 10a is cut off, so that all the water acting on the back surface of the large piston 7 is used for extruding the large piston 7. become.

[Embodiment of the idea]

As shown in Fig. 4, there is a T-shaped hole 2 in the large piston 7'.
1, the length of the groove portion 19' can be shortened as well as the outer diameter length of the sliding contact of the large piston.

〔Example〕

The present embodiment, that is, the device shown in the second drawing, is characterized by the provision of a groove 19 in the device shown in the first drawing, and since there is no other difference, all the same numbers as those shown in the first drawing are given.
Detailed explanation will be omitted.

The groove portion 19 is provided on the inner diameter of the rear end portion of the fixed cylinder 10, and one end thereof in this embodiment (tilted to the left in the figure) is indicated by the symbol t from the outer diameter end when the large piston 7 is at rest in a backward position. It has grown by an appropriate amount. Further, the shape of the groove in this example is an arcuate recess as shown in FIG.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the configuration of a cleaning device according to the prior art, FIG. 2 is an explanatory cross-sectional view of one embodiment of the device of the present invention, FIG. 3 is a cross-sectional view of the groove in FIG. 2, and FIG.
The figure shows another embodiment. 1...Inlet, 2...Central pipe, 3...Nozzle,
5...Small piston, 6...Movable cylinder, 7...
Large piston, 10... fixed cylinder, 13... rubber seal, 14... O ring, 16... check valve,
19...Mizobe.

Claims (1)

[Claims for Utility Model Registration] Fixed cylinder 1 having a front end extending inward of the toilet bowl and a rear end fixed within the hot water tank 1
0: A central pipe 2 with a front end extending into the fixed cylinder 10 and a rear end fixed within the hot water tank 11: A first inlet 1 communicating with the central pipe 2: The central pipe 2 A large piston 7 that is slidably mounted on the fixed cylinder 10 and partitions the inside of the fixed cylinder 10 into a front space 10a and a rear space 10b: A second inlet 18 that communicates with the second rear space 10b; Rubber seal 8 mounted on the inner periphery of the large piston 7 to ensure liquid tightness between the large piston 7 and the central pipe 2; A seal ring 15 that ensures fluid tightness between the fixed cylinder 10: A first spring 30 that urges the large piston 7 into the hot water tank 11: A rear end portion fixed to the large piston 7 and the fixed A movable piston 6 having a front end extending outside the cylinder 10: A small piston 5 that is slidably mounted within the movable piston 6 and has a central hole 5a into which the central tube 2 is loosely fitted. fixed to the small piston 5 and connected to the central pipe 2
A nozzle 3 having a rear end defining an annular passage 39 between the nozzle 3 and a front end extending outside the movable piston 6 and having an injection hole 3b. a second spring 31 for urging; a groove 19 carved on the inner circumferential surface of the fixed cylinder 10, which communicates the front space 10a and the rear space 10b when the large piston 7 is in the rest position; A cylinder of a human body private parts cleaning device.