JPH0679879U - Skirt packing for spuds - Google Patents

Abstract

(57) [Summary] [Purpose] When attaching a spud for connecting a cleaning pipe to a toilet bowl, even if there are some defects in the manufacturing precision and construction conditions of the toilet bowl, it is possible to reliably prevent water leakage. [Structure] An outer peripheral surface of a skirt packing 1 used when attaching a spud for connecting a cleaning pipe to a toilet bowl or the like has a taper larger than a large diameter side area 4 in a region continuous from the small diameter side end surface 2. The diaphragm surface 3 is formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 A spud is usually used to connect a flush pipe for supplying flush water to a toilet bowl or the like. The present invention relates to a skirt packing used when attaching a spud to a toilet bowl or the like, and an object thereof is to prevent water leakage even if there is some difficulty in the manufacturing precision or construction condition of the toilet bowl or the like. It is a thing.

[0002]

[Prior art]

 As shown in FIG. 7, when a flush pipe 30 for supplying flush water from a water supply source such as the flush valve 20 is to be connected to the toilet 40, attach a spud to the toilet 40 and connect the flush pipe 30 to this. Doing is a common method.

As shown in FIG. 8, the spud for connecting the washing pipe to the toilet 40 is composed of the spud body 10, the skirt packing 13, the flat packing 14, the slip washer 15, the tightening nut 16, and the like. The spud body 10 is made of metal, and is provided on its outer peripheral surface with a taper surface portion 11 to be inserted into the water supply port 41 and a screw portion 12 to which the tightening nut 16 is screwed.

The procedure for attaching the spud body 10 to the toilet 40 will be described. First, the tapered surface portion 11 of the spud body 10 is inserted into the water supply port 41 of the toilet 40, and then the skirt packing 13 fitted on the spud body 10 is fitted. 9 is inserted into the water supply port 41, and then the tightening nut 16 is screwed into the screw portion 12 via the flat packing 14 and the slip washer 15 to tighten the screw nut 12 to form a mounting structure as shown in FIG.

[0005]

[Problems to be solved by the device]

In order to reduce costs, it has been attempted to manufacture the spud body with synthetic resin instead of metal. However, when the spud body is made of synthetic resin, there is a problem that the frequency of water leakage is higher than that of the conventional metal spud. As shown in comparison with FIGS. 10A and 10B, when the synthetic resin spud body 17 is manufactured, the metallic spud body 10, the pipe inner diameter d, and the tapered surface portion 11 (18) to be inserted into the toilet ), The maximum outer diameter D and the length dimension L are set to be the same and to have the same strength, the synthetic resin spud body 17 has a wall thickness t ₂ that is smaller than a metal wall thickness t _1. You have to set it large. Therefore, in the synthetic resin spud body 17, the outer diameter dimension S ₂ of the threaded portion 19 is larger than the outer diameter dimension S ₁ of the threaded portion 12 of the metal spud body 10, and the taper surface portion 18 is correspondingly increased. There is no choice but to reduce the width dimension of. As a result, the contact area between the spud body 17 and the skirt packing becomes small, so that sufficient pressing force cannot be applied, and even if there are some difficulties in the manufacturing accuracy and construction of the toilet bowl 40 It is thought that the performance will be impaired and water will leak.

[0006]

[Means for Solving the Problems]

 The present invention provides a skirt packing for a spud that can reliably prevent water leakage when a spud whose main body is made of synthetic resin is attached to a toilet bowl, even if the toilet bowl manufacturing accuracy and construction conditions are somewhat poor. The feature is that the diaphragm surface having a taper larger than that of the large diameter side area is formed in the area continuous from the small diameter side end surface of the outer peripheral surface or in the area near the small diameter side end surface. .

[0007]

[Action]

 Since the skirt packing according to the present invention has a narrowing surface which is carried from the end surface on the small diameter side or in the vicinity thereof, it is inserted between the spud body and the toilet bowl to tighten the tightening nut. The surface part enters the water supply port and comes into close contact with the toilet bowl. Since the tapered surface is set to a large taper, the contact area with the toilet bowl is large. Therefore, even if the toilet bowl manufacturing accuracy is poor and the shape of the water inlet is difficult, or if the spud body is attached to the toilet bowl in a tilted state due to poor construction, the skirt packing will not fit with the toilet bowl. Since it maintains watertightness without forming a gap between them, it exerts a reliable waterproofing function.

[0008]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a half section showing an embodiment of a skirt packing 1 (hereinafter referred to as “main packing”) according to the present invention. In the packing 1 of the present invention in this embodiment, a throttle surface 3 is formed continuously from the small diameter side end surface 2 on the outer peripheral surface, and the taper thereof is set to be larger than the taper of the large diameter side region 4. It has features. However, the maximum outer diameter, the thickness dimension, the material, etc. are the same as those of the conventional product (made by SBR, the hardness is about 70), and there is no problem.

FIG. 2 is a side sectional view showing a mounting structure of the synthetic resin spud body 17 using the packing 1 of the present invention. As shown in the figure, since the packing 1 of the present invention is in close contact with the toilet bowl 40 in a state where the throttle surface 3 is inserted into the water supply port 41, even if the width of the taper surface portion 18 in the spud body 17 is narrow, an excellent water blocking function is provided. Can be demonstrated. In the drawings, members common to those of FIGS. 8 to 10 showing the conventional example are denoted by the same reference numerals.

By the way, when attaching the spud whose spud body is made of synthetic resin, if the toilet bowl is manufactured with good accuracy and construction, the conventional skirt packing can also prevent water leakage. However, in the case where the toilet bowl is poor in manufacturing accuracy and construction, the conventional product often leaks water, whereas the packing 1 of the present invention exhibits remarkably excellent waterproof performance. The present inventors confirmed this by the following experiment. As shown in FIGS. 3 and 4, when attaching the spud body 17 using the packing 1 of the present invention and the conventional packing 13, a spacer 5 having a thickness of 5 mm is sandwiched between the toilet bowl 40 and the flat packing 14 to thereby spud the spud. The main body 17 was intentionally formed in a poorly constructed state, and water was passed in this state, and the presence or absence of water leakage at the toilet water inlet was visually confirmed. For the experiment, we used two types of products, one with the same part number, which has a recess in the water inlet part, and a toilet bowl B with a protrusion in the water inlet part, which are relatively susceptible to water leakage. For each toilet bowl, the spud main suspension 17 was attached three times to each of the packing 1 of the present invention and the conventional packing 13, and then water was passed. The tightening torque was set to 157.5 kgf · cm and the water flow rate was 15 liters. The results are shown in Table 1.

[0011]

[Table 1]

As can be seen from Table 1, in the case of the packing 1 of the present invention and the packing 13 of the related art, when the construction condition is good (without the spacer), there is no significant difference in the waterproof performance. However, when the spud body 17 is intentionally tilted by sandwiching the spacer 5 having a thickness of 5 mm, according to the packing 1 of the present invention, water leakage can be surely prevented, whereas the conventional packing 13 impairs the water blocking function. Be done. As shown in FIG. 3, in the packing 1 of the present invention, the contact state with the toilet 40 is maintained well and the watertightness is secured, whereas in the conventional packing 13, the deformation occurs as shown in FIG. This is probably because the contact state with the toilet bowl 40 becomes poor. In this way, it can be said that the packing 1 of the present invention exhibits a significantly superior water-stopping function compared to the conventional product when the working state is poor.

In the experiment, the tightening amount h (see FIG. 3) of the tightening nut 16 varied even though the tightening torque value was set constant. Specifically, it is 8 to 13 mm when using the packing 1 of the present invention, and 10 to 20 mm when using the conventional packing 13. From this, it is conceivable that in the actual construction site where it is difficult to set the tightening torque strictly, the tightening amount of the tightening nut 16 is further varied. Therefore, the packing 1 of the present invention, which can reliably prevent water leakage even if the manufacturing accuracy and construction condition of the toilet bowl are somewhat inferior, is far superior to the conventional packing in its practical value.

By the way, the shape of the packing of the present invention is not limited to that shown in FIG. For example, as shown in FIG. 5, a curved surface having an appropriate curvature is provided at each of the boundary portion 3a between the diaphragm surface 3 and the small-diameter side end surface 2 and the boundary portion 3b between the diaphragm surface 3 and the large-diameter side region 4 of the outer peripheral surface. If it is formed to form a so-called rounded surface, it is possible to expect further improvement in watertightness. Further, as shown in FIG. 6, it is possible to make the width of the diaphragm surface 3 larger and set the taper slightly smaller than the packing shape of FIG. The taper size and the like can be appropriately selected according to the object of use. Furthermore, the packing of the present invention can be used when attaching a spud to other than a toilet bowl. As described above, the present invention does not prevent application in accordance with the embodiments.

[0015]

[Effect of device]

 The packing of the present invention has an excellent function of preventing water leakage despite its simple shape, and especially when the manufacturing accuracy and construction conditions of toilet bowls are poor, it exerts exceptional water-stopping performance. Moreover, the cost is not particularly increased as compared with the conventional product.

[Brief description of drawings]

FIG. 1 is a front view of a half section showing an embodiment of the packing of the present invention.

FIG. 2 is a side sectional view showing a state in which a spud is attached to a toilet using the packing of the present invention.

FIG. 3 is a side cross-sectional view showing a state in which a spud is attached to a toilet using the packing of the present invention, and a case where a spacer is sandwiched to artificially form a defective construction state.

FIG. 4 is a side cross-sectional view showing a state in which a spud is attached to a toilet bowl using a conventional skirt packing, in which a spacer is sandwiched to artificially form a defective construction state.

FIG. 5 is a front view in half section showing another embodiment of the packing of the present invention.

FIG. 6 is a front view in half section showing a further different embodiment of the packing of the present invention.

FIG. 7 is a side view showing a toilet bowl to which a cleaning pipe is connected.

FIG. 8 is a partial cross-sectional side view showing the manner in which a spud for connecting a cleaning pipe is attached to a toilet bowl using a conventional packing, the components being exploded.

FIG. 9 is a partial cross-sectional side view showing a state in which a spud for connecting a cleaning pipe is attached to a toilet bowl using a conventional packing.

FIG. 10 shows a spud body of a spud used when connecting a cleaning pipe to a toilet, (A) is a half-section side view showing a metal spud body, and (B) is a synthetic resin spud body. It is a half cross-sectional side view showing.

[Explanation of symbols]

1 Proposed packing 2 Small-diameter side end surface 3 Drawing surface 3a Curved surface (boundary portion between drawing surface and small-diameter side end surface) 3b Curved surface (boundary portion between drawing surface and large-diameter side area of outer peripheral surface) 4 Outer peripheral surface Large diameter side area 14 Flat packing 15 Slip washer 16 Tightening nut 17 Spud body (made of synthetic resin) 30 Washing pipe 40 Toilet bowl 41 Water inlet

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiro Kawasumi 5-1-1, Koiemotocho, Tokoname City, Aichi Prefecture Inax Engineering Co., Ltd. (72) Inventor Kei Shibuki 5-1-1, Koiemotocho, Tokoname City, Aichi Prefecture Stock Company Inax Engineering

Claims (2)

[Scope of utility model registration request] 1. An annular skirt type packing used when attaching a spud for connecting a cleaning pipe to a toilet bowl or the like, which is in a region continuous from the small diameter side end face of the outer peripheral surface or in a region near the small diameter side end face. A skirt packing for spuds, characterized in that a throttle surface having a taper larger than that of the large diameter side region is formed. 2. The spud skirt packing according to claim 1, wherein a curved surface having an appropriate curvature is formed at a boundary portion between the throttle surface and the end surface on the small diameter side and a boundary portion between the throttle surface and the large diameter side region of the outer peripheral surface. Skirt packing for spuds.