JP2020070631A - Coupling structure of piping member - Google Patents

Abstract

To provide a coupling structure of a piping member using screwing, in which completion of the screwing to an appropriate position can be easily judged; designability is increased; and looseness to be caused by external force is prevented.SOLUTION: A coupling structure of a piping member of this invention includes a valve stem 4 with a protrusion 14 which is an engagement part 13 protruding toward a side surface of a female screw part 12 relative to a middle side surface of a male screw part 11. In the female screw part 12 of a valve lid 5, a cutout-shaped groove part 17 which is a to-be-engaged part 16 is formed downward from a top end, and the female screw part can be bent to enlarge the diameter when stress is applied in an outer peripheral direction. The valve stem 4 and the valve lid 5 are coupled to each other by causing the male screw part 11 and the female screw part 12 to be screwed with each other to a position where the engagement part 13 and the to-be-engaged part 16 are engaged to each other.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a pipe member connection structure using screwing.

  Equipment for producing drainage by using a wash bowl, sink, bathtub, etc. is provided with a piping member for draining the drainage produced by the use to the downstream side.

  Here, when the pipe members are connected by screwing, water leakage may occur unless screwing is advanced to an appropriate position. That is, if the screwing is weak, it becomes impossible to make a watertight connection, while if the screwing is too strong, the member is cracked. Similarly, if the screw is loosened, water leakage may occur.

  With respect to the above problem, in the connection structure described in Patent Document 1, the engaging portion and the engaged portion are provided in the axial direction of screwing. When the screwing is completed, the engaging portion and the engaged portion are engaged with each other to prevent the loosening, and it is possible to allow the operator to determine the screwing completion by the tactile sensation during the engagement.

  However, the connection structure described in Patent Document 1 is poor in design because the engaging portion and the engaged portion are exposed to the outside, and there is a possibility that the engagement may be released by pressure from the outside. It was

JP, 2014-234591, A

  In view of the above problems, the present invention provides a connection structure for a piping member using screwing, in which it is possible to easily determine that screwing has been completed up to an appropriate position, and the connection structure is designed. It is an object of the present invention to provide a connection structure that is improved and does not loosen due to external pressure.

The present invention according to claim 1 for solving the above-mentioned problems, is a connection structure of a piping member by screwing,
The male screw portion side member or the female screw portion side member is provided with an engaging portion protruding from one side surface toward the other side surface,
The above-mentioned engaging portion is a piping member connection structure characterized in that it engages with an engaged portion formed on the other side.

According to a second aspect of the present invention, the engaging portion and the engaged portion are
The pipe member connection structure according to claim 1, wherein the pipe member is engaged when screwing is completed to an appropriate position.

According to the present invention of claim 3, the engaged portion is
It is a groove part which engages with an engaging part, The connection structure of the piping member according to claim 1 or 2 characterized by things.

In the present invention according to claim 4, the engaging portion is
The pipe member connection structure according to any one of claims 1 to 3, wherein the connection member is formed on the screwing end side of the male screw part or the female screw part.

In the present invention according to claim 5, one of the male screw portion or the female screw portion is formed on a valve lid that closes a drainage port,
The other is the pipe member connection structure according to any one of claims 1 to 4, which is formed on a valve shaft that supports the valve lid.

  According to the present invention, it is possible to easily determine that the screwing has been completed up to an appropriate position in the piping member connection structure using screwing. In addition, it is possible to improve the design of the connection structure and the resistance against external pressure.

It is sectional drawing which shows the construction state of this invention. It is a perspective view which shows a valve-shaft end part. It is sectional drawing which shows a valve stem and a valve lid. It is a reference drawing showing a position of an engaging part at the time of connecting a valve stem and a valve lid. It is sectional drawing which shows the connection process of a valve stem and a valve lid. It is a cross-sectional perspective view showing a connection completed state. It is sectional drawing which shows the construction state of this invention. It is a perspective view which shows a valve-shaft end part. It is sectional drawing which shows a valve stem and a valve lid. It is a reference drawing showing a position of an engaging part at the time of connecting a valve stem and a valve lid. It is sectional drawing which shows the connection process of a valve stem and a valve lid. It is a cross-sectional perspective view showing a connection completed state. It is sectional drawing which shows other embodiment.

  Hereinafter, the connection structure of the piping member of the present invention will be described with reference to the drawings. The following description is for facilitating the understanding of the embodiments, and the invention is not limited to the understanding.

  As shown in FIG. 1, the present invention relates to a connection structure of a valve shaft 4 and a valve lid 5 in a valve body 3 attached to a tank body B of a washbasin.

  The tank body B is in the shape of a box with an open top, and an opening is formed in the bottom surface thereof. A tubular drain plug 2 that forms a drain port 1 is disposed inside the opening, and the hot and cold water inside the tank B is discharged to the sewage side.

  The valve body 3 is a valve member that opens and closes the drainage port 1 of the tank body B, and is composed of a valve shaft 4, a valve lid 5, and a plate 10. The valve shaft 4 and the female screw portion 12 are respectively the male screw portion 11 and the male screw portion 11. It has a female screw portion 12 and is connected by screwing. Since the valve shaft 4 slides toward the upper end of the valve lid 5 as the screwing progresses, in the present embodiment, the male screw portion 11 has the upper end side on the screwing start side and the lower end side on the screwing end side. The female screw portion 12 has a lower end side which is a screwing start side and an upper end side which is a screwing end side.

The valve shaft 4 is a rod-shaped body having a male screw portion 11 that is screwed with a female screw portion 12 formed on the valve lid 5 at the upper end, and a perforated plate 10 is inserted therethrough.
A valve lid 5 is screwed into the male screw portion 11, and a projection 14 which is an engaging portion 13 and a positioning portion 15 are projectingly provided at the lower end as shown in FIG.
The protrusion 14 is projected from the middle side surface of the male screw portion 11 toward the side surface of the female screw portion 12.
The positioning portion 15 is protruded from the side surface toward the side surface of the female screw portion 12 at the lower end of the male screw portion 11, and the protrusion amount is larger than that of the protrusion 14.

As shown in FIG. 3, the valve lid 5 is a lid member that is circular in a plan view and closes the drainage port 1, and includes a body portion 6 and a covering portion 8.
A packing 9 is fitted around the main body 6, and a tubular portion 7 for mounting the valve shaft 4 is formed in the center thereof.
The tubular portion 7 is substantially C-shaped in a plan view, has a female screw portion 12 formed therein, and a notched groove portion 17 that is an engaged portion 16 formed downward from the upper end. Therefore, when stress is applied in the outer peripheral direction, it is possible to bend so as to expand the diameter. The width of the groove 17 is slightly larger than the width of the protrusion 14.
The female screw portion 12 is formed around one round starting from the groove portion 17 as a starting point and an end point, and has a pitch and a protrusion amount corresponding to those of the male screw portion 11.
The covering portion 8 is a design surface that covers the upper surface of the main body portion 6, and is attached to the main body portion 6 by caulking with a stainless material.

  The perforated plate 10 has a net-like shape with a plurality of openings formed in the vertical direction, and collects dust and the like in hot and cold water discharged from the tank B. Further, the eyelet 10 has an opening formed in the center thereof so that the valve shaft 4 is inserted therethrough. In the present embodiment, the eye plates 10 are arranged at two positions above and below the valve shaft 4, and the eye plates 10 arranged above catch the dust and the like in the hot and cold water mainly discharged from the drainage port 1. The collecting and arranging plate 10 arranged below collects mainly debris in hot water discharged from the overflow passage.

When assembling the valve body 3, the male screw portion 11 and the female screw portion 12 are moved to a position where the engaging portion 13 and the engaged portion 16 engage with each other in a state where the valve shaft 4 is inserted into the plate 10. The valve shaft 4 and the valve lid 5 are connected by screwing.
The screwing will be described in detail. As shown in FIG. 4 and FIG. 5A, when the engaging portion 13 is in the position P1 where the engaging portion 13 is not in contact with the female screw portion 12, the worker can perform the screwing with a light force. It is possible to proceed. On the other hand, when the screwing is advanced to the position P2 where the engaging portion 13 and the screwing start side end portion of the female screw portion 12 come into contact with each other, the engaging portion 13 pushes the female screw portion 12 outward. At this time, since the notch-shaped groove portion 17 is formed as the engaged portion 16 in the female screw portion 12, the female screw portion 12 bends outward so that the diameter of the female screw portion 12 increases. As a result, the engaging portion 13 pushes the female screw portion 12 and the screwing proceeds, and the engaging portion 13 moves to the position P3 where it engages with the engaged portion 16. The state shown in 6 is completed.
When the engaging portion 13 and the engaged portion 16 are engaged at the time of completion of the above connection, the diameter of the female screw portion 12 that has been expanded is reduced by the elasticity of itself due to the disappearance of the pressing force of the engaging portion 13. , Return to its original shape. At this time, the operator can reduce the stress required for screwing, and can sense by touch that the screwing is completed up to the proper position. Further, since a sound is generated during the engagement, the operator can visually recognize the completion of screwing.
Further, when the connection is completed, the positioning portion 15 comes into contact with the screwing start side end portion of the female screw portion 12, and it becomes impossible to further advance the screwing.

  When the connection between the valve shaft 4 and the valve lid 5 is released, the valve shaft 4 and the valve lid 5 are rotated in the opposite direction of the connection. At this time, the engaging portion 13 presses the engaged portion 16 again to bend the female screw portion 12 outward, and the engagement between the engaging portion 13 and the engaged portion 16 is released. After that, the valve shaft 4 and the valve lid 5 can be separated by simply rotating the valve shaft 4 or the valve lid 5 in the releasing direction.

  Next, the connection structure of the piping member according to the second embodiment will be described. The piping member according to the second embodiment is related to the valve body 3 as in the first embodiment, and as shown in FIG. 7, the description regarding the tank body B is the same as that of the first embodiment, and therefore omitted. .

  The valve body 3 is a valve member that opens and closes the drainage port 1 of the tank body B, and is composed of a valve shaft 4, a valve lid 5, and a plate 10. The valve shaft 4 and the female screw portion 12 are respectively the male screw portion 11 and the male screw portion 11. It has a female screw portion 12 and is connected by screwing. Since the valve shaft 4 slides toward the upper end of the valve lid 5 as the screwing progresses, in the present embodiment, the male screw portion 11 has the upper end side on the screwing start side and the lower end side on the screwing end side. The female screw portion 12 has a lower end side that is a screwing start side and an upper end side that is a screwing end side.

The valve shaft 4 is a rod-shaped body having a male screw portion 11 that is screwed with a female screw portion 12 formed on the valve lid 5 at the upper end, and a perforated plate 10 is inserted therethrough.
As shown in FIG. 8, the male screw portion 11 has a substantially C-shape in plan view having a hollow interior, and a notch-shaped groove portion 17 is formed as an engaged portion 16 downward from the upper end. It is possible to reduce the diameter by bending when stress is applied in the central direction. The width of the groove 17 is slightly larger than the width of the protrusion 14.

The valve lid 5 is a lid member that closes the drainage port 1 and has a circular shape in a plan view, and includes a main body portion 6 and a covering portion 8.
A packing 9 is fitted around the main body 6, and a tubular portion 7 for mounting the valve shaft 4 is formed in the center thereof.
The tubular portion 7 is internally formed with a female screw portion 12 having a pitch and a protrusion amount corresponding to that of the male screw portion 11, and an engaging portion 13 is provided at an upper end of the female screw portion 12 on a screwing end side. The protrusion 14 is a protrusion.
The protrusion 14 is formed on the screwing end side of the female screw portion 12 and projects toward the side surface of the male screw portion 11.
The covering portion 8 is a design surface that covers the upper surface of the main body portion 6, and is attached to the main body portion 6 by caulking with a stainless material.

  The perforated plate 10 has a net-like shape with a plurality of openings formed in the vertical direction, and collects dust and the like in hot and cold water discharged from the tank body B. In addition, the eyelet 10 has an opening formed in the center thereof, through which the valve shaft 4 is inserted. In the present embodiment, the perforated plate 10 is arranged at two locations above and below the valve shaft 4, and the perforated plate 10 placed above catches dust and the like in hot and cold water mainly discharged from the drainage port 1. The eyelet 10 that collects and arranges the lower part mainly collects dust and the like in hot water discharged from the overflow passage.

When assembling the valve body 3, the male screw portion 11 and the female screw portion 12 are moved to a position where the engaging portion 13 and the engaged portion 16 engage with each other in a state where the valve shaft 4 is inserted into the plate 10. The valve shaft 4 and the valve lid 5 are connected by screwing.
The screwing will be described in detail. As shown in FIG. 10 and FIG. 11A, when the engaging portion 13 is at the position P1 where the engaging portion 13 is not in contact with the male screw portion 11, the operator can screw in with a light force. It is possible to proceed. On the other hand, when the screwing is advanced to the position P2 where the engaging portion 13 and the screwing start side end portion of the male screw portion 11 are in contact with each other, the male screw portion 11 is pressed inward by the engaging portion 13. .. At this time, since the inside of the male screw portion 11 is hollow and the notch-shaped groove portion 17 is formed, the male screw portion 11 bends inward so that the male screw portion 11 is reduced in diameter by the pressing. As a result, the engagement portion 13 advances the screwing while reducing the diameter of the male screw portion 11, and moves to the position P3 where the engagement portion 13 engages with the engaged portion 16, and thus FIG. The connection completion state shown in 12 is reached.
When the engaging portion 13 and the engaged portion 16 are engaged at the time of completion of the above connection, the male screw portion 11 that has been reduced in diameter expands due to its own elasticity when the pressing force of the engaging portion 13 disappears. , Return to its original shape. At this time, the operator can reduce the stress required for screwing, and can sense that the screwing is completed to the proper position by touch. In addition, since a sound is generated during the engagement, the operator can visually recognize the completion of screwing.

  When the connection between the valve shaft 4 and the valve lid 5 is released, the valve shaft 4 and the valve lid 5 are rotated in the opposite direction of the connection. At this time, the engaging portion 13 presses the engaged portion 16 again to bend the male screw portion 11 inward, and the engagement between the engaging portion 13 and the engaged portion 16 is released. After that, the valve shaft 4 and the valve lid 5 can be separated by simply screwing in the releasing direction.

In the connection structure of the piping member of the present invention, the engaging portion projects from one side surface of the male screw portion side member or the female screw portion side member toward the other side surface and is engaged with the other side. Forming a part. Therefore, the operator can determine that the screwing is properly performed by the tactile sensation and the sound associated with the engagement. In addition, the engagement between the engaged portion and the engaged portion allows the screw in the properly screwed state to be prevented from loosening, and the suitable state to be maintained.
Further, the engaging portions of the engaging portion and the engaged portion are covered with the female screw portion, the main body portion, the covering portion and the like, and are not exposed to the outside. Therefore, it is possible to prevent the engagement from being disengaged due to the stress from the outside, and the design is improved.

The present invention is not limited to the shape of the above-described embodiment, and various shape changes may be made without departing from the gist of the invention. For example, as in the other embodiment shown in FIG. 13, the engaging portion 13 is an O-ring fitted to the tip of the valve shaft 4, and is located at a position separated from the male screw portion 11 and the female screw portion 12. It may be formed. Similarly, the engaged portion 16 may be formed at a position separated from the male screw portion 11 and the female screw portion 12. Further, although the engaging portion 13 is composed of an O-ring in the other embodiments described above, the material for forming the engaging portion 13 and the engaged portion 16 is not limited in any way.
Further, in the first embodiment, the tubular portion 7 is substantially C-shaped in plan view and the groove portion 17 as the engaged portion 16 is formed, but the groove portion 17 also serves as the engaged portion 16. You don't have to. That is, the engaged portion 16 may be formed by forming the protrusion 14 as the engaging portion 13 on the inner surface of the tubular portion 7 and cutting out a part of the male screw portion 11. In this case, the groove portion 17 has an effect of bending the tubular portion 7 outward when the engagement portion 13 gets over the male screw portion 11.
Further, in the second embodiment described above, the engaged portion 16 that is the notch-shaped groove portion 17 is formed in the male screw portion 11, but as in the other embodiments, the screwing of the male screw portion 11 is started. The engaged portion 16 may be formed above the side end portion. By doing so, it becomes possible to engage the engaging portion 13 formed on the tubular portion 7 before pressing the male screw portion 11 during screwing, so that the member can be lightly pressed. Can connect to each other.

Further, in each of the above-described embodiments, the lifting / lowering operation of the valve body is performed by the operating portion arranged at a position separated from the valve body, but the lifting / lowering operation is performed by directly pushing the valve lid, It may be a valve body having a structure in which the ascending / descending state is held by a lock mechanism arranged inside the valve shaft.
Further, a male screw portion may be formed on the valve lid side and a female screw portion may be formed on the valve shaft side.
Further, in each of the above-described embodiments, the engaged portion is the slit-shaped groove portion, but the engaged portion may also be a protrusion that protrudes toward the engaging portion side.
Further, in each of the above-mentioned embodiments, the valve lid and the valve shaft are connected to each other, but any member and any place may be used as long as the connecting structure is a pipe member.

B Tank Body 1 Drain Port 2 Drain Plug 3 Valve Body 4 Valve Shaft 5 Valve Lid 6 Main Body 7 Cylindrical Portion 8 Cover 9 Packing 10 Eyelet 11 Male Screw 12 Female Thread 13 Engagement 14 Protrusion 15 Positioning 16 Engagement part 17 Groove part

Claims (5)

A connection structure of piping members by screwing,
The male screw portion side member or the female screw portion side member is provided with an engaging portion protruding from one side surface toward the other side surface,
A connecting structure for a piping member, wherein the engaging portion engages with an engaged portion formed on the other side. The engaging portion and the engaged portion,
The pipe member connection structure according to claim 1, wherein the pipe member is engaged when screwing is completed to an appropriate position. The engaged portion is
It is a groove part which engages with an engaging part, The connection structure of the piping member of Claim 1 or Claim 2 characterized by the above-mentioned. The engaging portion is
The connection structure for a piping member according to any one of claims 1 to 3, wherein the connection structure is formed on the screwing end side of the male screw part or the female screw part. One of the male screw portion or the female screw portion is formed on the valve lid closing the drainage port,
The other is formed in the valve shaft which supports the said valve lid, The connection structure of the piping member as described in any one of Claim 1 thru | or 4 characterized by the above-mentioned.

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