JP4658673B2 - Release wire sealing material for drain plug device - Google Patents

Description

  The present invention relates to a sealing material for a release wire of a drain plug device, and more specifically, a sealing material for sealing a space between a release wire that passes through a drain pipe connected to a drain outlet of a sink, a basin, etc., and the insertion portion. It is about.

  Conventionally, the seal structure of the release wire insertion portion in the drain pipe is a sleeve-like shape having a screw wire portion having a release wire insertion hole and a male screw on the outer periphery, and a flange portion inserted into the insertion hole. And a nut body that is screwed into the threaded cylinder portion and elastically presses the flange portion of the seal material. Structure (the former) to be fixed to the tube, a hooked cylindrical bolt inserted into the release wire connecting hole from the inside of the drainage pipe, a washer fitted outside the drainage pipe to the hooked cylindrical bolt, and a hooked cylindrical bolt A nut that is screwed into the cylindrical part of the sleeve, a sleeve-shaped sealing material having a collar part that is set in the through-hole of the cylindrical bolt with a hook, and a screw part that is screwed into the cylindrical part of the cylindrical bolt with the hook from the outside of the drain pipe. Tightening nut that represses the buttocks of the sealing material. In the same manner as the former, the release wire is fixed to the drain pipe while maintaining the water-stopping property by crushing the collar portion of the seal portion with a tightening nut (see, for example, Patent Document 1). ).

The former requires a special molding die from the necessity of integrally molding a drain pipe having a threaded cylinder portion, and there is a problem in terms of molding cost.
On the other hand, since the latter is only required to open the connection hole in the drain pipe by post-processing, the molding cost is low, but the number of parts is large, and tightening work with a tightening nut is essential. Workability is very bad.
JP 2001-65695 A

The present invention has been made in view of the above-described conventional circumstances, and the purpose of the process is to effectively use the drain pressure by engaging the connecting hole of the drain pipe to maintain the water stop and to release the release wire into the drain pipe. An object of the present invention is to provide a release wire sealing material for a drain plug device that can be fixed.
Another object of the present invention is to provide a sealing material for a release wire of a drain plug device in which the waterproofing is not hindered by a tensile force generated by bending the release wire during wiring.

  The technical means taken to solve the above problems is to open a release path through which a release wire is inserted in the central length direction of the bushing body formed of an elastic material such as a synthetic resin or rubber, and the length of the bushing body. A three-dimensional directional locking groove that inserts and locks the entire periphery of the hole of the communication hole that is opened in the drain pipe is provided on the outer circumferential surface of the midway in the vertical direction, and the groove bottom diameter of the locking groove is determined from the communication hole diameter. Slightly larger than the diameter of the drainage pipe, and the outer edge of the bushing body near the drainage pipe with the above-mentioned locking groove as a boundary. A release wire sealing material for a drain plug device, characterized in that an inclined guide surface for guiding is formed (claim 1).

According to the above means, the bushing body is inserted into the connecting hole of the drainage pipe with the inclined guide surface as a guide from the outside of the drainage pipe in a crossing direction from the outside of the drainage pipe. To do.
The locking groove has a groove bottom diameter slightly larger than the communication hole diameter and a locking groove width slightly smaller than the drainage pipe thickness. The diameter is reduced in the centripetal direction, the release path is pressed against the outer peripheral surface of the release wire to stop water between the release wire and the bushing body, and the contact hole is made by the elastic restoring force of the engaging groove to narrow the width dimension. The hole edge is attached and water is stopped between the bushing body and the communication hole.

The release path has a required length area in which the area provided with the three-dimensional directional locking groove is projected slightly smaller than the diameter of the release wire to form a compression path. It is preferable that a thick-walled rigid portion is formed between the bottom of the stop groove (claim 2).
Here, the area is a length area slightly longer than between the front end and the rear end of the three-dimensional directional locking groove in the length direction of the bushing body.

  In the above means, the thick rigid portion in the centripetal direction in the centripetal direction by the connecting hole hole edge is added to the elastic clamping force generated in the release wire by the small-diameter pressure passage when the bushing body is fitted on the release wire. The pressure contact force due to the reduced diameter maintains the predetermined shape retention of the bushing body, and has excellent water-stopping properties and release wire fixing properties.

Further, the bushing body is provided with an annular recess having a depth extending from a middle thickness area at the end opposite to the drain pipe side to the vicinity of the locking groove, and is covered with a thin film to prevent bending deformation of the release wire. The insertion passage is provided continuously with the pressure path, and the outer peripheral portion of the annular recess is used as a barrier for the release wire. And it is suitable when the said annular recessed bottom is formed in the concave curved surface (Claim 4).
When the opening position of the locking groove is close to the opposite end of the bushing body, the release wire bending deformation prevention insertion path is shortened. In that case, the thin film is extended rearward of the rear side end so as to secure a release wire bending deformation prevention passage having a required length, and the elastic force of the release wire bending deformation prevention passage is used. Prevents sudden release wire bending.

In the above means, the bending at the time of the release wire wiring corresponds to the annular recessed portion as a clearance, and the bending of the release wire exceeding the clearance is absorbed by the elastic deformation of the barrier and transmitted to the locking groove. To suppress.
Then, the concentration of the tensile stress, which varies depending on the mounting position of the operating portion to which the other end of the release wire is connected, is defined as a concave curved surface (a concave curved surface at the bottom of the annular concave portion) that constitutes the base end portion of the release wire bending deformation preventing passage. ).

  In addition, a stopper surface on the outer surface of the hole edge of the communication hole may be provided on the bushing body so as to protrude from the engaging groove constituting surface with which the outer surface portion of the hole of the communication hole engages. In addition, it is preferable that the tip on the drainage pipe side is expanded in a trumpet shape with a curved surface (Claim 6).

Since the present invention is configured as described above, it has the following advantages.
(Claim 1) Three-dimensional directional relation that inserts and locks the entire periphery of the connecting hole opened in the drain pipe on the outer peripheral surface of the longitudinal direction of the bushing body made of an elastic material such as a synthetic resin material or rubber. A stop groove is provided around, the groove bottom diameter of the lock groove is slightly larger than the communication hole diameter, and the lock groove width is slightly smaller than the drain pipe thickness. The release wire seal of a convenient drain plug device that reduces the diameter of the release path in the centripetal direction, stops water between the release wire and the bushing body, and stops water between the bushing body and the connection hole. New materials can be provided.
(Claim 2) In addition, the release path has a required length range in which the area provided with the three-dimensional directional locking groove is projected to be a slightly smaller diameter than the diameter of the release wire and is used as a compression path. The elastic pinching force can be forced to move with respect to the release wire, and the elastic pinching force can be reduced in the centripetal direction uniformly across the thick rigid part by the edge of the connection hole. The pressure contact force due to the above can be concentrated locally on the release wire while maintaining the shape retaining property of the bushing body, exhibiting excellent water-stopping property, and fixing the predetermined position of the release wire to the communication hole.
(Claim 3) Further, the bushing body is a release in which an annular recess having a depth extending from the middle thickness region at the end opposite to the drain pipe side to the vicinity of the locking groove is provided and covered with a thin film. An insertion passage for preventing wire bending deformation is provided continuously with the elastic pressure passage, and if necessary, the thin film is extended behind the rear end of the bushing body to insert a release wire bending deformation prevention of a required length. If the passage is secured, the resistance of the release wire bending deformation prevention passage prevents the release wire from being bent suddenly by the elastic force, and the annular recess becomes a clearance when wiring. The release wire is allowed to be bent, and the release wire is bent more than the clearance is absorbed by the elastic deformation of the barrier, and the propagation of the stress to the locking groove is suppressed to maintain the specified water stop performance. Each variation of the part layout Depending to prevent sharp bends deformation of release wires, without reducing the durability, it is possible to maintain the excellent water-stopping.
(Claim 4) Further, since the annular recess bottom is formed as a concave curved surface, the concentration of the tensile stress which varies depending on the mounting position of the operating portion to which the other end of the release wire is connected is prevented from bending the release wire. It is possible to improve durability by relaxing and dispersing at the concave curved surface (the concave curved surface at the bottom of the annular recess) constituting the base end portion of the insertion passage for use.
(5) In addition, when the stopper surface of the hole edge outer surface of the communication hole is provided on the bushing body so as to project continuously from the locking groove constituting surface with which the hole edge outer surface portion of the communication hole engages, Sometimes the locking groove does not pass through, and the insertion locking operation of the bushing body is simple and reliable.
(Claim 6) Further, since the tip of the release channel on the drainage pipe side has a curved surface and expands in a trumpet shape, the release wire can be guided to the drainage plug side without sudden bending.

  Next, an embodiment of the release wire sealing material of the drain plug device of the present invention will be described with reference to FIGS. 1 to 4. Reference numeral 1 denotes the sealing material, and reference numeral 2 denotes the release wire.

  The sealing material 1 has a release path 11 through which the release wire 2 is inserted in the central length direction of a bushing body 1 ′ made of an elastic material such as synthetic resin or rubber.

  As shown in FIG. 1, the bushing body 1 'has a larger diameter than a communication hole c opened in a drain pipe (short drain pipe) C connected to a drain port member b provided in a drain port B of a basin or the like. The locking groove 21 is opened in the middle in the longitudinal direction with the same three-dimensional directionality as the connecting hole c, and the outer peripheral surface near the drain pipe C is inclined with the locking groove 21 as a boundary. An annular recess 41 is formed so as to have a depth from the middle thickness region opposite to the drain pipe C side to the vicinity of the locking groove 21 in the guide surface 31.

  As shown in FIG. 3, the release path 11 has a required length area on which the area provided with the locking groove 21 having a three-dimensional direction is projected with a slightly smaller diameter than the diameter of the release wire 2. The insertion passages 61 and 71 having substantially the same diameter as the release wire 2 are formed on the front and rear sides of the elastic pressure passage 51.

The bottom of the annular recess 41 is formed by a concave curved surface 41a as shown in FIG. 3, and the rear side formed by forming the annular recess 41a, that is, the side opposite to the drain pipe C side. The insertion passage 71 includes a thin film 41b formed by the recess of the annular recess 41 extending backward from the end opposite to the drain pipe C, and a release wire bending deformation prevention passage (described later). Reference numeral 71 is given for explanation).
In this release wire bending deformation preventing insertion passage 71, the thin film 41b extends to the rear side opposite to the drain pipe C because the locking groove 21 is opened toward the rear side of the bushing body 1 '. As a result of opening the locking groove 21 at the central part or substantially the center of the bushing body 1 ′, the release wire bending deformation preventing insertion passage 71 having the required length can be secured. There is no need to extend it.

  By providing the annular recess 41, a barrier 81 is left as an outer peripheral film around the annular recess 41 in the bushing body 1 '.

  On the other hand, the insertion path 61 on the opposite side of the insertion path 71 of the release wire bending deformation prevention passage 71, that is, the insertion passage 61 on the drain pipe C side, is expanded in a trumpet shape with a curved surface at the tip as shown in FIG. The curved guide surface 61a is curved, and the insertion passage wall 61b has an outer peripheral surface smaller than the diameter of the communication hole c of the drain pipe C to be an insertion guide surface 61c when inserted into the communication hole c, and is continuous with the insertion guide surface 61c. Thus, the inclined guide surface 31 is formed in a conical shape that gradually increases toward the open groove edge of the locking groove 21.

  The locking groove 21 has a groove bottom diameter slightly larger than the communication hole c diameter, a width dimension slightly smaller than the drainage pipe C thickness, and a thick rigidity between the groove bottom and the elastic pressure passage 51. As shown in FIG. 2, the stopper surface 101 is formed to project outward from the inner surface 21b on the side where the hole edge outer surface portion of the communication hole c is engaged. ing.

  The stopper surface 101 is formed by raising the inner surface on the side where the hole edge outer surface portion of the communication hole c in the engaging groove constituting surface is engaged higher than the inner surface 21a on the opposite side. A protruding portion 111 for confirming the insertion position when the bushing body 1 ′ is inserted into the communication hole c of the drain pipe C is formed in a protruding manner on the thickened portion by raising the stopper surface 101 high. The portion 111 is provided at a position shifted by exactly 180 degrees, and the three-dimensional directional locking groove 21 is engaged with the entire communication hole c by inserting the bushing body 1 ′ with one side facing the highest position. It has come to be stopped.

The release wire sealing material 1 of the drain plug device configured as described above is externally fitted to the release wire 2 in a state of receiving a slight clamping resistance by the elastic pressure passage 51 as shown in FIG. It is installed at a required position of the release wire 2.
Then, the insertion guide surface 61c having a diameter smaller than the diameter of the communication hole c of the drain pipe C is used as a guide to be inserted into the communication hole c, and the bushing body 1 'is elastically deformed by the inclined guide surface 31 and the hole of the communication hole c is inserted. The edge is guided to the locking groove 21 having a three-dimensional direction by the stopper surface 101, and the hole edge is locked to the locking groove 21.
Since the locking groove 21 has a groove bottom diameter slightly larger than the communication hole c diameter and a width dimension slightly smaller than the drain pipe C thickness, as shown in FIG. 91, the diameter of the entire pressure path 51 is uniformly reduced in the centripetal direction so that the entire area of the pressure path 51 is uniformly pressed against the outer peripheral surface of the release wire 2 and the inner and outer surfaces of the hole edge of the communication hole c are engaged with the locking groove 21. The inner surfaces 21a and 21b are pressed firmly to seal between the release wire 2 and the bushing body 1 ′ and between the drain pipe C and the bushing body 1 ′ in a watertight manner.
The bushing body 1 ′ as the sealing material 1 is held rigid by the thick-walled rigid portion 91, and the tensile stress generated via the release wire 2 due to the connection with the operation portion 3 in the release wire bending deformation preventing insertion passage 71 is annular. The concave curved surface 41a at the bottom of the recess 41 is dispersed in the thick rigid portion 91 to avoid local stress concentration.
Further, as shown in FIG. 4, the pulling directionality of the release wire 2 according to the layout of the operation portion 3 corresponds to the annular recess 41 as a clearance, and further bending deformation is relaxed and dispersed by the barrier 81 to the locking groove 21. The film is not transmitted, and the bending deformation of the release wire 2 is prevented by the thin film resistance of the insertion passage 71 for preventing the release wire bending deformation.

The length of the bushing body 1 'is 13 mm, the diameter of the bottom of the locking groove 21 is 10.7 mm, the width dimension is 0.5 mm, the length of the compression passage 51 is 3.5 mm, the diameter is 2.6 mm, the insertion passages 61 and 71 have the diameters of 3. 6 mm, thin film 41 b thickness 1.1 mm, length 10.5 mm, annular recess 41 depth 4 mm, width dimension 1.1 mm, guide curved surface 61 a is formed with a trajectory having a radius of 4 mm, thick elastic portion 91 thickness It is set to 4.1 mm.
In contrast, the release wire 2 has a diameter of 3.5 mm, a communication hole c diameter of 10 mm, and a drain pipe C thickness of 0.8 mm.
According to this, the elastic path 51 is installed in a state where the thick rigid portion 91 is elastically compressed by about 0.9 mm when the race wire is inserted, and the engagement of the locking groove 21 to the edge of the connecting hole c of the drain pipe C is performed. When stopping, the thick elastic portion 91 is further compressed by about 0.7 mm, and the entire thick elastic portion 91 is crushed to a thickness of about 2.5 mm.
With the repulsive force due to the crushing, the sealing wire 1 is maintained in a watertight state with the release wire 2 while maintaining a predetermined rigidity.
The hole edge of the communication hole c is sealed by the restoring force of the locking groove 21 that is expanded by about 0.3 mm and the pressing force to the outside by the drainage pressure, and the sealing material 1 is made watertight. .

  In addition, about connection of the release wire 2 to the operation part 3 and the drainage part 4, since there is no difference from before, description is abbreviate | omitted.

FIG. 2 is a partially cutaway front view showing a use state of the release wire sealing material of the drain plug device of the present embodiment. It expands and shows in the perspective view of the sealing material for the release wire. In the longitudinal sectional view of the seal, (a) shows a state where the release wire is not installed, (b) shows a state where the release wire is installed, (c) is inserted into the connecting hole of the drain tube. The locked state is shown. The longitudinal cross-sectional view of the sealing material shows a state in which the bending deformation of the release wire is prevented by the resistance of the release wire bending deformation preventing passage.

Explanation of symbols

1: Seal material 2: Release wire 1 ': Bushing body C: Drain pipe c: Communication hole 21: Locking groove 31: Inclined guide surface 11: Release path 51: Repression path 91: Thick-walled rigid part 41: Annular recess 71: Release wire bending prevention passage 41a: concave curved surface 81: barrier 101: stopper surface 61a: guide curved surface (curved curved surface)

Claims (6)

  A release path for inserting a release wire in the center length direction of the bushing body formed of an elastic material such as synthetic resin or rubber was opened, and a drain pipe was opened in the outer peripheral surface in the longitudinal direction of the bushing body. A three-dimensional directional locking groove that inserts and locks the entire circumference of the hole edge of the communication hole is provided, the groove bottom diameter of the locking groove is slightly larger than the communication hole diameter, and the width of the locking groove is a drain pipe. An inclined guide surface is formed on the outer peripheral surface of the bushing body close to the drainage pipe with the locking groove as a boundary to guide the connecting hole edge to the locking groove. Release wire sealing material for drain plug devices.   The release path has a required length area in which the area provided with the three-dimensional directional locking groove is projected slightly smaller than the diameter of the release wire to form a compression path. 2. A sealing material for a release wire of a drain plug device according to claim 1, wherein a thick-walled rigid portion is formed between the bottom of the stop groove.   The bushing body has an annular recess having a depth extending from the middle thickness region at the end opposite to the drain pipe side to the vicinity of the locking groove and is covered with a thin film to prevent bending of the release wire. The release wire sealing material for a drain plug device according to claim 1 or 2, wherein a passage is provided continuously to the compression path, and an outer peripheral portion of the annular recess is used as a barrier of the release wire.   The release wire sealing material for a drain plug device according to claim 3, wherein the bottom of the annular recess is formed as a concave curved surface.   The stopper surface of the hole edge outer surface of a communication hole is protrudingly provided in the said bushing body continuously from the latching groove structure surface which the hole edge outer surface part of the said communication hole engages. 4. A sealing material for a release wire of a drain plug device according to any one of claims 4 to 6.   The release wire sealing material for a drain plug device according to any one of claims 1 to 5, wherein the release path has a distal end on the drain pipe side widened in a trumpet shape with a curved surface.

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