JP3134222U - Fitting for piping - Google Patents

Abstract

[PROBLEMS] To reliably secure a compressive strength necessary for a connecting portion in a state where a pipe body and a joint for piping are connected.
In a synthetic resin pipe joint for connecting pipes of synthetic resin materials by insertion or screwing, the pipe joint is transparent or translucent so that at least the inside can be visually recognized from the outside. It consists of the material which has.
[Selection] Figure 2

Description

  The present invention relates to a synthetic resin pipe joint that joins synthetic resin pipes together by insertion or screwing. Specifically, the insertion and screwing state of the pipe into the pipe joint is determined by the outside of the pipe joint. It is related with the joint for piping which can be visually recognized.

In general, the pipe form of a pipe body made of a synthetic resin material is an insertion pipe or a screw pipe, and the pipe joint used for the pipe is also made of a synthetic resin material, and the pipe body is inserted into the pipe joint. Or it is the form piped by screwing.
Moreover, since the said pipe | tube requires the rigidity with respect to the pressure from the outside, it is designed so that it may become the pipe | tube which has rigidity according to the piping place and piping objective.

By the way, as one of the piping designs, there is a design for selecting a pipe body and a pipe joint having a compressive strength that can ensure the rigidity of the pipe, and a design for inserting and screwing the pipe body into the pipe joint. .
The design of the insertion amount and screwing amount of the pipe body into the pipe joint is such that the compressive strength in the vicinity of the opening which is the connection part between the pipe body and the pipe joint is compared with the compressive strength other than in the vicinity of the opening Therefore, it is considered that the necessary compressive strength is generated in the connecting portion in the connected state.
That is, in the actual piping work, the piping work is performed while ensuring the amount of insertion and screwing of the pipe body into the pipe joint determined in the design.
However, since the pipe body ensures weather resistance during storage, it is normally defined as an opaque black color, and the pipe joint is not defined as a pipe body, but the same opaque black color. Therefore, at the time of the piping work, it was difficult to confirm the insertion amount of the pipe body and the screwing amount with respect to the joint for piping determined by the design.
Therefore, the present applicant paid attention to the fact that the joint for piping is not defined as opaque black, and as a result of earnest research, has reached the present invention.

  Since there is no prior art document related to the present invention that the applicant knows at the time of filing the patent, there is no prior art document information to be disclosed in this specification.

  An object of the present invention is to reliably secure the compressive strength necessary for a connecting portion in a state in which a pipe body and a pipe joint are connected, and an object of the present invention is to provide a pipe joint that solves this problem.

  In order to achieve the above object, the technical means employed by the present invention is a synthetic resin pipe joint that connects synthetic resin pipes by insertion or screwing, wherein the pipe joint is at least outside. It is made into the joint for piping characterized by being comprised from the transparent or translucent raw material which can visually recognize the inside.

The term “transparent” as used in the present invention means a state in which the internal shape can be visually recognized from the outside, and includes colorless transparency generally called “natural clear” and colored transparency called “color clear”.
“Translucent” means a state in which the internal shape appears as a substantially silhouette from the outside due to the transmission of light, such as cloudy glass or a white cover used for illumination.

  As another technical means for achieving the above object, in a synthetic resin pipe joint for connecting pipes of synthetic resin materials by insertion or screwing, a pipe connected to the pipe joint is provided. By providing a hole to be visually recognized, and the hole is provided at a position where a necessary compressive strength is generated when the connected pipe body is visually recognized. is there.

A preferable pipe as a pipe to which this pipe joint is applied is a culvert drainage drainage pipe used in a field.
This underdrain water supply / drainage pipe has a structure in which pipes are provided with holes for water supply / drainage in the pipeway, and water is supplied into the pipes by supplying water into the pipes, and extra water from the field is supplied. Since it is used for draining into the pipe from the hole, there is no problem even if a gap or the like occurs in the joint part in the pipeway, and it is necessary to take a waterproof measure for the joint part. Therefore, there may be a hole as described above.

  That is, the present invention visually confirms the amount of insertion and screwing of the “pipe” into the “pipe joint” determined by the design from the outside of the “pipe joint” during piping work. It is a “pipe joint”.

“Tube” as used in the present invention means that the “pipe” alone cannot be connected by screwing or screwing. For example, pipes (including straight pipes and curved pipes) and piping angles are changed. Elbows (including elbows of various angles such as 90 degrees, 45 degrees, and 30 degrees), cheese used for branch piping from main pipes (including same-diameter cheese and different-diameter cheese), A reducer (including concentric reducers and eccentric reducers) used to change the pipe diameter of the straight pipe in the middle, and further includes a substantially Y-shaped three-way pipe and a cross pipe.
In addition, the “joint for piping” is not limited in its form as long as it has a function of inserting or screwing each of the “pipe bodies”. For example, an elbow, a cheese, a reducer, and a three-way pipe・ Cross pipes and sockets are listed.
That is, the piping structure when each of the above-mentioned “pipe joints” is used is connected by inserting each “pipe” into each of the “pipe joints” and connecting them together. When the "pipe joint" is inserted into the "pipe joint", the concave and convex portions are not formed. For example, in the case of screwed pipes, male and female screws that are screwed to each other are screwed into each of the “pipe joints” and “pipe bodies”. In this structure, the “pipe” is screwed into the “pipe joint” and the male screw and the female screw are screwed together.

In addition, as described above, there are some elbows, cheeses, reducers, three-way pipes, cross pipes, etc., that have “joint bodies” that do not have a joint function as described above. For connection and connection with the “pipe” as the pipe, a socket that is one of the “pipe joints” is used.
When the pipe joint is a socket, for example, the pipe joint and the socket are provided with connection means for connecting them, and the connection means is an engagement recess provided on the outer periphery of the pipe body. And the engagement projection provided on the inner periphery of the socket to maintain the connection state between the tube body and the socket, and by rotating the socket in the circumferential direction around its axis. The connection state is released, and the tube member and the socket can be inserted / removed along the axis. The engagement recess engages with the engagement protrusion when the tube member and the socket are connected. An engaging groove, and a guide space for guiding the engaging protrusion along the axis when the tube member and the socket are inserted and removed, and the groove direction of the engaging groove is the rotation direction of the socket. While the guide is formed in the same direction as By forming the gap along the direction orthogonal to the rotation direction and dividing the engagement groove portion, the engagement groove portion and the guide space are communicated in a direction facing the rotation direction of the socket. The structure characterized by ensuring the engagement / disengagement space of the engaging protrusion to perform is mentioned.
The “groove direction” here means the longitudinal direction of the groove.

  In the connection form using the “socket” described above, all of the connection parts of the pipes are connected using the “socket”, or the connection using the “socket” and the connection using the “pipe joint” other than the “socket” are combined. including.

During piping work at the site, it may be necessary to fine-tune the length and position of the piping according to the situation at the site. In such a case, the “tube” may be cut or the corresponding length Since the length and position of the piping can be finely adjusted on site without changing to ones, for example, the engaging groove portion is arranged in a plurality along the axial direction of the tubular body. Preferred forms are preferred.
Here, the “width direction” means a direction intersecting the “groove direction”.

  ADVANTAGE OF THE INVENTION According to this invention, the joint for piping which can ensure reliably the compressive strength required for a connection part in the state which connected the pipe body and the joint for piping can be provided.

Hereinafter, the best mode for carrying out a joint for piping according to the present invention will be described with reference to the drawings.
In the present embodiment, an example in which a socket is used as a joint for piping used for connecting pipe bodies is illustrated.

FIG. 1 shows a state in which a pipe connecting cheese 1 and pipe 2 as a tubular body using a socket 3 is disassembled.
FIG. 2 shows a part of the piping in which the cheese 1 and the pipe 2 are connected via the socket 3.
The cheese 1 and the pipe 2 are formed in a predetermined shape using an opaque black synthetic resin material, and the socket 3 is formed in a predetermined shape using a colorless and transparent synthetic resin material.

Moreover, the piping structure of this embodiment is a structure in which the cheese 1 and the pipe 2 are inserted and connected to the socket 3 which is a separate member, and is provided on the outer peripheral surface of the cheese 1 and the pipe 2. The connection means a which consists of the engagement recessed part 4 and the engagement protrusion 5 provided in the inner peripheral surface of the socket 3 is provided.
Then, the concave and convex engagement between the engagement recess 4 and the engagement protrusion 5 holds the connected state of the cheese 1 and the pipe 2 and the socket 3, and the axis of the socket 3 is the center of rotation. The connection state is released by turning in the circumferential direction, and the cheese 1, the pipe 2, and the socket 3 can be inserted into and removed from each other along the axis.
Moreover, the piping structure shown by this form makes the piping to the left and right sides centering on the cheese 1 into the main pipe 10 on the drawing, and makes the piping to the upper side into the branch pipe 20.

  The engaging recess 4 includes a plurality (six in the figure) of engaging grooves 41 with which the engaging protrusions 5 engage when the cheese 1 and the pipe 2 and the socket 3 are connected, and the cheese 1 and the pipe 2 and the socket 3. A plurality of (in the figure, two) guide spaces 42 for guiding the engaging protrusions 5 along the axes of the cheese 1, the pipe 2 and the socket 3 when being inserted and removed.

The engaging groove portions 41 are arranged in the same direction as the rotation direction of the socket 3, and the width direction is arranged along the axial direction from the vicinity of the end portions of the cheese 1 and the pipe 2 so as to be adjacent to each other. Protruding portions 43 are formed between the groove portions 41 and at the ends of the cheese 1 and the pipe 2.
The guide space 42 is configured so that the longitudinal direction from the ends of the cheese 1 and the pipe 2 extends along the direction perpendicular to the rotation direction of the socket 3 (the axial direction of the cheese 1 and the pipe 2). 41 and the convex part 43 are divided in the rotation direction of the socket 43, and the bottom part 42a is formed to be flush with the bottom part 41a of the guide groove part 41.
Further, the two guide spaces 42 are formed at positions facing directly in the radial direction of the cheese 1 and the pipe 2.

With this configuration, there are a total of six engaging groove portions 41 arranged in two rows, one set being one row, and one engagement protrusion 5 to be described later is provided for each one of the rows of the engaging groove portions 41. Each piece engages correspondingly.
Further, since the engaging groove portion 41 and the convex portion 43 and the guide space 42 are formed as described above, the engaging groove portion 41 and the guide space 42 communicate with each other in a direction facing the rotation direction of the socket 3. An engagement / disengagement space 44 for the mating protrusion 5 is secured.

In this embodiment, an example is shown in which a total of six engaging groove portions 41 arranged in three rows as a set of two are arranged along the axial direction from the vicinity of the ends of the cheese 1 and the pipe 2. However, the present invention includes a configuration in which the engagement groove portions 41 are arranged in the middle portions of the peripheral surfaces of the cheese 1 and the pipe 2, and also includes a configuration in which the number of arrangement of the engagement groove portions 41 is one to four or more. (Neither shown).
Further, in this embodiment, an example in which the guide spaces 42 are two is illustrated, but the present invention includes an embodiment in which the guide spaces 42 are three or more. In this case, one row of the engaging groove portions 41 is three. A set of books or more (not shown).

In the figure, reference numeral 45 denotes a stopper portion for restricting the rotation of the connecting portion 3.
The stopper portion 45 protrudes from the engagement groove portion 41, and the engagement protrusion 5 comes into contact with the stopper portion 45 when the engagement groove portion 41 moves in the groove direction as the connection portion 3 rotates. Further rotation of the connecting portion 3 is stopped.
The stopper 45 prevents the connecting portion 3 from over-rotating, and the over-rotation prevents the engaging protrusion 5 from engaging with the engaging protrusion 5 in the movement along the engaging groove 41. It can prevent passing through the groove part 41 and coming out to the guide space 42.

The engagement protrusions 5 are provided so as to protrude two on each side at positions symmetrical with respect to the central portion of the connection portion 3 in the axial direction.
Further, the two engaging projections 5 on one side are provided so as to face each other in the radial direction of the connecting portion 3.
That is, a total of four engagement protrusions 4 are provided in one connection portion 3, and each of the engagement protrusions 4 is guided to the corresponding guide space 42 of the connection portion 3 and is also provided in the corresponding engagement groove portion 41. Will be engaged.

In the figure, reference numeral 51 denotes a sorting protrusion for regulating the amount of insertion of the cheese 1 and the pipe 2 into the connecting portion 3 and for sorting the inserting side of the cheese 1 and the inserting side of the pipe 2 at the connecting portion 3. .
When the cheese 1 and the pipe 2 are inserted into the connecting portion 3, the sorting projection 51 is provided at the center portion in the axial direction of the inner peripheral surface of the connecting portion 3 along the rotation direction of the connecting portion. By abutting on the sorting projection 51, further insertion of the cheese 1 and the pipe 2 is prevented.

In the present embodiment, for each one of the rows of the engagement groove portions 41, each of the engagement protrusions 5 to be described later is correspondingly engaged, but in the present invention, A form in which the number of engaging protrusions 5 is limited to the same number as the number of rows of engaging groove portions 41 is also included (not shown).
In this case, four or more engaging projections 5 on one side protrude from the engaging portion 5 at positions symmetrical with respect to the central portion of the connecting portion 3 in the axial direction. Each of the plurality of assigned engagement protrusions 5 is distributed so as to be directly opposed in the radial direction of the connection portion 3 with the same number, and the guide space 42 has a space that is equal to or larger than the width of the convex portion 43. Are arranged in parallel along the longitudinal direction (not shown).

Hereinafter, the piping work process using the socket 3 of this embodiment will be described.
First, when the cheese 1 and the pipe 2 are inserted into the socket 3, the engagement protrusion 5 is aligned with the guide space 42, and is inserted to a portion corresponding to the target engagement groove 41 row.
When the engaging projection 5 reaches a portion corresponding to the target row of engaging grooves 41, the engaging projection 5 faces the engagement / disengagement space 44 and the socket 3 in the rotation direction. The mating protrusion 5 is movable from the engagement / disengagement space 44 to the engagement groove 41.
Then, by rotating the socket 3 from the movable state of the engaging protrusion 5 until the engaging protrusion 5 comes into contact with the stopper portion, the cheese 1 and the pipe 2 are connected via the socket 3 and the piping is completed. .

In this piping work process, since the socket 3 is colorless and transparent, the engaging groove portion 41, the engaging space 42, and the engaging protrusion 5 are all visible from the outside of the socket 3.
That is, the piping work can be performed while visually confirming the position of the engagement protrusion 5 with respect to the engagement space 42, the position of the target engagement groove 41, and the position of the engagement / disengagement space 44.
Further, the cheese 1 and the pipe 2 can be inserted into the socket 3 without resistance by the connection means a, and the engagement protrusion 5 can be engaged with the engagement groove portion 41 without resistance by rotation of the socket 3.
Therefore, since the insertion amount of the cheese 1 and the pipe 2 with respect to the socket 3 determined by design can be confirmed quickly and reliably, a connection portion having the necessary compressive strength can be configured quickly and reliably. .
In addition, it is possible to maintain the certainty of the piping state, and to easily cope with changes in existing piping layout and on-site piping layout.
Moreover, by changing the row of the engaging groove portions 41 with which the engaging protrusions 5 are engaged, the length and position of the piping can be cut to the cheese 1 and the pipe 2, or the corresponding length depending on the situation on the site. The length and position of the pipe can be finely adjusted at the site without replacement.

Note that the present invention is not limited to the illustrated embodiment, and can be implemented with configurations within a range that does not deviate from the contents described in each section of the claims of the utility model registration.
For example, in the illustrated embodiment, the tubular body is inserted into the socket and connected to the tubular body by engaging the concave and convex portions by rotating the socket, but in the present invention, the tubular body is inserted into the socket. And a connection form in which the pipe body is screwed into the socket (not shown).
Further, in the illustrated embodiment, a configuration in which a pipe joint is used as a socket is illustrated. However, in the present invention, for example, an elbow, a cheese, a reducer, a three-way tube, a cross tube, or the like is inserted or screwed in. It is good also as a joint for piping made into the connection structure which is used. In this case, these joints for piping become transparent or have translucency (not shown).
Further, according to the present invention, a hole for visually confirming a pipe to be connected is provided in a joint for piping, and the hole is a position where a necessary compressive strength is generated when the pipe to be connected is visually recognized. (Not shown).
That is, according to the present invention, all the pipe joints connecting the pipe bodies are made transparent or translucent regardless of the connection form, or the holes are opened from the outside. It is only necessary that the tubular body is visible.

The top view which shows the state which decomposed | disassembled some piping to which the coupling for piping which concerns on this invention was applied, and shows a part notched. The top view which shows a part of piping which applied the coupling for piping which concerns on this invention, and shows a part notched. FIG. 3 is an enlarged sectional view taken along line (3)-(3) in FIG. 2.

Explanation of symbols

1: Cheese (tube)
2: Pipe (tube)
3: Socket (Piping joint)
a: connecting means 4: engaging recess 5: engaging protrusion 41: engaging groove 42: guide space 44: engaging / disengaging space 10: main pipe 20: branch pipe

Claims (4)

In joints for synthetic resin pipes that connect pipes of synthetic resin materials by insertion or screwing,
A joint for piping, wherein the joint for piping is made of at least a transparent or translucent material whose inside can be visually recognized from the outside. In joints for synthetic resin pipes that connect pipes of synthetic resin materials by insertion or screwing,
The pipe joint is provided with a hole where the connected pipe body is visually recognized, and the hole is provided at a position where the necessary compressive strength is generated when the connected pipe body is viewed. A fitting for piping. The piping joint is a socket,
A connecting means for connecting the pipe body and the socket is provided.
The connection means holds the connection state between the tube body and the socket by the concave and convex engagement between the engagement recess portion provided on the outer periphery of the tube body and the engagement protrusion provided on the inner periphery of the socket, The connection state is released by rotation in the circumferential direction around the axis of the socket as a rotation center, and the tube member and the socket are inserted into and removed from each other along the axis.
The engaging recess includes an engaging groove portion that engages with the engaging protrusion when the tube member and the socket are connected, and a guide space that guides the engaging protrusion along the axis when the tube member and the socket are inserted and removed. Have
The engaging groove is formed so that the groove direction is the same as the rotation direction of the socket, while the guide space is along a direction orthogonal to the rotation direction, and the engagement groove is 2. An engagement / disengagement space for an engagement protrusion that communicates the engagement groove portion and the guide space in a direction facing the rotation direction of the socket is ensured by being formed to be divided. Or the coupling for piping of Claim 2.   The joint for piping according to claim 3, wherein a plurality of the engaging groove portions are arranged with the width direction along the axial direction of the pipe member or the socket.

Images