JP2011055989A - End cap for pipe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an end cap for a pipe which permits discharge of water within the pipe while the end cap is attached to the pipe. <P>SOLUTION: A water channel 4 is formed in a cylinder portion 1B in the end cap 1 from the front end to the base end of the cylinder portion 1B, and a water running groove 5 is disposed on the rear surface 3 of a shielding portion 1A in the end cap 1 for connecting the water channel 4 to outside. When water penetrates into the pipe 10 when a wheelchair is washed, the pipe 10 is inclined to make water flow toward an opening of the pipe 10, or toward the end cap 1. Then, water within the pipe 10 runs along the inner surface of the pipe 10, passing through the water channel 4, further passing through the water running groove 5 to flow out. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a pipe end cap that is attached to one or both ends of a pipe.

  Conventionally, a resin end cap (so-called “mekura cap”) is fixedly attached to one end or both ends of a pipe whose one end or both ends are open by press fitting or the like in order to ensure designability or safety. For example, a wheelchair frame is composed of a metal pipe, and the end cap is attached to the tip of the pipe that is inserted from the wheelchair body, thereby improving the design by shielding the opening of the pipe. It is intended to prevent the user or caregiver from being injured by the tip of the pipe (Patent Document 1).

JP 2008-237583 A

However, in the above configuration, when water enters the pipe due to wheelchair washing or the like, the end cap blocks the opening of the pipe, so that the water does not escape from the pipe and rust is generated in the pipe. There was a problem that it was easy to do. On the other hand, this problem can be solved by removing the end cap and draining it. Normally, however, the end cap is firmly attached to the pipe, and it is very troublesome to remove the end cap and reattach it. is there.
Then, an object of this invention is to provide the end cap for pipes with the water draining mechanism which can solve the said problem.

  The present invention has been made to solve the above problems, and is an end cap for a pipe that is attached to a pipe having one end or both ends opened, and is inserted into the pipe from the opening of the pipe when attached. A cylindrical portion, and a shielding portion that is provided at a proximal end of the cylindrical portion and that abuts the opening edge of the pipe when installed to shield the opening of the pipe, and the cylindrical portion is inserted into the pipe A plurality of flanges that contact the inner surface of the pipe when being formed are provided around the outer peripheral surface of the cylindrical part, and a water passage along the axial direction of the cylindrical part is provided between the flanges of the cylindrical part. Formed from the distal end of the cylindrical portion to the base end, and further provided on the surface that contacts the pipe opening edge in the shielding portion, a water passage ditch for connecting the water passage and the outside world in a state of being attached to the pipe, When attached to a pipe, the liquid in the pipe travels along the inner surface of the pipe and It flows down to the opening of the pipe through a water passage provided in the section, and is further discharged out of the pipe through the groove for water passage of the shielding section that shields the opening of the pipe. It is the end cap for pipes characterized by doing as described above.

In this configuration, in order to attach the pipe end cap to the pipe, the cylindrical portion is inserted into the pipe, the back surface of the shielding portion is brought into contact with the opening edge of the pipe, and the opening portion of the pipe Shield. In addition, since the collar part is provided with a collar part and the collar part abuts on the inner surface of the pipe when the cap is attached, the end cap is firmly attached to the pipe and cannot be easily removed.
On the other hand, when liquid (for example, water) enters the pipe and the liquid is discharged out of the pipe, the liquid is opened by tilting the pipe with the end cap attached. Part, that is, it flows down toward the end cap. Then, the liquid passes through the water passage set on the outer periphery of the cylindrical portion of the end cap while traveling along the inner surface of the pipe, and further flows out through the water passage concave groove provided in the shielding portion. Therefore, it is possible to drain liquid from the pipe (so-called draining) without removing the end cap from the pipe. In addition, since the water flow ditch | groove of the said shielding part is provided in the back surface of this shielding part, it is difficult to visually recognize from the outside in the state with which this pipe was mounted | worn, and the design property in an end cap mounting | wearing state is not deteriorated.

  Further, a water passage through hole is provided at the base end portion of the tube portion so as to communicate the inside of the tube portion with the outside of the tube portion, and the liquid that has entered the tube portion passes through the water passage through hole. Therefore, it is desirable to have a configuration that flows out of the cylindrical portion.

  With such a configuration, even if the liquid in the pipe enters the cylinder part from the tip of the cylinder part, the liquid is discharged from the through hole for water to the outside of the cylinder part, and the water passage recess of the shielding part is provided. It can be discharged out of the pipe through the groove.

  The end cap for pipes of the present invention can easily discharge the liquid that has entered the pipe without removing it from the pipe.

External perspective view of end cap as seen from above External perspective view of end cap as seen from below Longitudinal side view showing the end cap in the mounted state Longitudinal side view showing the end cap in the mounted state Longitudinal side view showing the flow of water when draining water in the pipe

  Examples of the present invention will be described. The pipe end cap (hereinafter referred to as an end cap) of this embodiment is attached to a metal cylindrical pipe constituting a frame of a wheelchair (not shown).

  As shown in FIGS. 1 and 2, the end cap 1 has a cylindrical tube portion 1B and a disk-shaped shielding portion 1A provided at the base end of the tube portion 1B. The cylindrical portion 1B is inserted into the pipe 10 from the opening of the pipe 10 when being attached to the pipe 10 (see FIG. 3). The shielding portion 1A abuts against the opening edge 10A of the pipe 10 at the time of mounting to shield the opening portion of the pipe 10, and its outer diameter is substantially equal to the outer diameter of the pipe 10. Is set.

  A plurality of elastic flange portions 2 are extended from the outer peripheral surface of the cylindrical portion 1B along the outer peripheral surface of the cylindrical portion 1B. Specifically, as shown in FIG. 2, four plate-like elastic flanges 2 that are radiated (four directions) around the axis of the cylindrical portion 1B are arranged four by four along the axial direction. ing. The elastic flange 2 elastically contacts the inner surface of the pipe 10 when inserted into the pipe 10 so that the end cap 1 does not easily come off from the pipe 10 (FIGS. 3 and 4). reference).

  Furthermore, by continuing the gap between the elastic flange portions 2 and 2 adjacent to each other around the axis in the cylindrical portion 1B along the axial direction of the cylindrical portion 1B, the water passage 4 along the axial direction of the cylindrical portion 1B is provided. The tube portion 1B is formed from the distal end to the proximal end. In addition, as shown in FIG. 1 etc., in the end cap 1 of a present Example, the four water flow paths 4 are formed around the axis line.

  In addition, the back surface 3 of the shielding portion 1A, that is, the surface in contact with the pipe opening edge 10A, has a plurality of water passage grooves 5 that connect the water passages 4 and the outside world while being attached to the pipe 10. Is provided. Specifically, as shown in FIG. 1 and the like, the four shielding grooves 5 are arranged in the shielding portion 1A along the outer periphery of the shielding portion 1A.

  Moreover, the through-holes 6 and 6 for water communication which connect the inside of this cylinder part 1B, and this cylinder part 1B outside are arrange | positioned at the base end part of the said cylinder part 1B in opposition (refer FIG. 4).

  The end cap 1 is preferably formed of a molded product made of a synthetic resin material having elasticity.

  In the above configuration, in order to attach the end cap 1 to the pipe 10, first, the cylindrical portion 1B is inserted into the pipe 10 from the opening of the pipe 10, and the back surface 3 of the shielding portion 1A (to the pipe opening edge 10A). The abutting surface) is brought into contact with the opening edge 10 </ b> A of the pipe 10. If it does so, the opening part of this pipe 10 will be shielded, and mounting | wearing will be completed.

  When the cap is attached, since the elastic flange portion 2 provided on the cylinder portion 1B elastically contacts the inner surface of the pipe 10, the end cap 1 is firmly attached to the pipe 10 and cannot be easily removed.

  On the other hand, when the wheelchair is washed and water enters the pipe 10 and it is necessary to drain the water, the pipe 10 is inclined while the end cap 1 is attached to the pipe 10, so that the water is opened in the pipe 10, Flow down toward the end cap 1 (see FIGS. 5a and b). Then, as shown in FIG. 5a, the water in the pipe 10 passes through the water passage 4 set in the cylindrical portion 1B of the end cap 1 while traveling along the inner surface of the pipe 10, and is further provided in the shielding portion 1A. The water passes through the recessed groove 5 for water flow and flows out to the outside. Here, when the water in the pipe 10 enters the cylinder part 1B from the tip of the cylinder part 1B, as shown in FIG. 5b, the cylinder passes through the water passage through hole 6 provided in the cylinder part 1B. It flows out of the part 1B, and then flows out of the pipe 10 through the water passage groove 5 in the same manner as above. And when all the water in the pipe 10 is discharged, the draining operation is completed.

  As described above, according to the present invention, the water draining operation of the pipe 10 can be performed without removing it from the pipe 10, so that the working efficiency can be improved and the occurrence of rusting of the pipe 10 can be prevented. In addition, as shown in FIG. 1 etc., the groove 5 for water passage of the said shielding part 1A in the end cap 1 is provided in the back surface of this shielding part 1A, and only opens slightly in the side surface of this shielding part 1A. Therefore, the design of the end cap attached state is not deteriorated.

  In addition, this invention is not limited to the said Example, A design can be changed suitably in the range which does not deviate from the main point of this invention. For example, the pipe 10 is not limited to a wheelchair. Further, the water passage 4 and the water through holes 6 provided in the tube portion 1B may be single or plural. Furthermore, the number of water-groove grooves 5 provided in the shielding portion 1A may be single or plural. The pipe 10 that can be mounted is not limited to a cylindrical shape, and the overall shape can be changed so that the pipe 10 can be mounted on various cross-sectional shapes.

  In addition to the above embodiment, a female screw may be formed in the pipe opening, and a male screw that engages with the female screw may be formed on the outer periphery of the cylindrical portion 1B of the end cap 1. In such a case, the thread of the male screw in the cylindrical portion 1B corresponds to the collar portion in the present invention. In other words, the plurality of flanges do not necessarily have to be provided on the same circumference on the outer peripheral surface, and may be arranged in a spiral shape such as a screw groove or alternately.

DESCRIPTION OF SYMBOLS 1 End cap 1A Shielding part 1B Cylindrical part 2 Elastic flange part 3 Back surface 4 Water passage 5 Water passage groove 6 Pipe 10A

Claims (2)

An end cap for a pipe that is attached to a pipe that is open at one or both ends,
A cylindrical portion inserted into the pipe from the opening of the pipe when mounted;
A shielding portion that is provided at the base end of the cylindrical portion and shields the opening of the pipe by contacting the opening edge of the pipe when mounted;
A plurality of flanges that contact the inner surface of the pipe when inserted into the pipe are provided around the outer peripheral surface of the cylinder,
A water passage along the axial direction of the cylindrical portion is formed between the flange portions of the cylindrical portion from the distal end to the proximal end of the cylindrical portion, and further on the surface of the shielding portion that abuts on the pipe opening edge. Provided with a water ditch for communicating the water channel and the outside world in a mounted state,
When attached to the pipe, the liquid in the pipe flows down the inner surface of the pipe to the opening of the pipe through the water passage provided in the cylinder, and further, the opening of the pipe A pipe end cap characterized in that the pipe end cap is discharged to the outside of the pipe through the water passage concave groove of the shielding part.   The base end portion of the cylindrical portion is provided with a water through hole that communicates the inside of the cylindrical portion with the outside of the cylindrical portion, and the liquid that has entered the cylindrical portion passes through the water through hole. 2. The pipe end cap according to claim 1, wherein the pipe end cap flows out of the cylindrical portion.