JP2017133565A - Tube body holding member and method for manufacturing tube body holding member - Google Patents

Abstract

An object of the present invention is to provide a tube body holding member whose dimensions can be easily changed according to tube bodies having a plurality of outer diameter dimensions. A plate-shaped tube holding member 100 includes a plate-shaped base 101 and a claw part 102 that projects from the base 101 in the thickness direction of the base 101 and is formed integrally with the base 101, and has a plurality of bases. 101 are connected linearly in one direction, and the protruding direction of the claw portion 102 is radially inside the tube insertion space 203 formed inside the tube joint 201. The claws 102 bite into the outer surface 301 of the tubular body 300 to prevent the tubular body 300 from coming off the pipe joint 201. [Selection diagram] Figure 2

Description

  The present invention relates to a tube body holding member and a method for manufacturing the tube body holding member.

In order to prevent the pipe body inserted into the pipe joint from coming out of the pipe joint, a lock ring is used for the pipe joint into which the pipe body is inserted (for example, see Patent Document 1).
A claw is provided on the inner diameter side of the lock ring, and the claw can bite into the outer surface of the pipe body to hold the pipe body and prevent the pipe body from coming out of the pipe joint.

JP 2009-92153 A

Since the claw provided in the lock ring needs to bite into the outer surface of the tube, it is necessary to manufacture the lock ring using a mold manufactured according to the outer diameter of the tube.
If the diameter of the lock ring is too large relative to the outer diameter of the tube body, the depth at which the claws bite into the outer surface of the tube body is insufficient, and the tube body may be pulled out from the tube joint. Further, if the diameter of the lock ring is too small with respect to the outer diameter of the tube, the depth to which the nail bites becomes excessive, and the nail reaches the inner peripheral surface of the tube, which may cause water leakage.

  This invention considers the said fact and makes it a subject to provide the pipe body holding member which can change a dimension easily according to the pipe body of a some outer diameter dimension.

  The tubular body holding member according to claim 1 includes a plate-like base portion and a claw portion that protrudes from the base portion in the thickness direction of the base portion and is formed integrally with the base portion, and the plurality of base portions are unidirectional. In a tubular body insertion space formed inside the pipe joint, the claw portion is deformed into an annular shape so that the protruding direction of the claw portion is radially inward of the tubular body insertion space. The claw portion is inserted into the outer surface of the pipe body to prevent the pipe body from coming out of the pipe joint.

  This tubular body holding member includes a claw portion formed integrally with a plate-like base portion, and is formed in a state where a plurality of base portions are connected in a straight line in one direction. When this tubular body holding member is disposed in the tubular body insertion space formed inside the tubular joint, the tubular body holding member is annular so that the protruding direction of the claw portion is radially inward of the tubular body insertion space. Transform into a shape. At that time, by cutting the tube holding member according to the size of the tube, the size when the tube holding member is deformed into an annular shape can be arbitrarily set. Thereby, it is not necessary to create a lock ring having a plurality of dimensions according to the outer diameter of the tubular body.

  According to a second aspect of the present invention, in the tube body holding member according to the first aspect, a first opening that opens in a direction intersecting with the one direction is formed in the base.

  In this tubular body holding member, since the first opening that opens in the direction intersecting with one direction is formed in the base portion, the force required to bend the tubular body holding member can be reduced. For this reason, the tubular body holding member can be easily deformed in an annular shape.

  According to a third aspect of the present invention, in the tube body holding member according to the second aspect, the first opening is formed at a connection position between the bases.

  In this tubular body holding member, since the first opening is formed at a connection position between the base portions, the tubular body holding member can be easily cut at the boundary between the base portions, and the tubular body The number of the base portions can be easily adjusted according to the outer diameter size.

  According to a fourth aspect of the present invention, in the tubular body holding member according to the second or third aspect, the base is formed by opening in the direction opposite to the opening direction of the first opening, and the annular shape. And a second opening that can mesh with the first opening in the circumferential direction when deformed.

  In this tubular body holding member, when the tubular body holding member is deformed into an annular shape, the first opening at one end of the tubular body holding member can be engaged with the second opening at the other end. Therefore, the elasticity of the tube body holding member can prevent the tube body holding member from extending again in a straight line, and the tube body holding member can be maintained in an annular shape.

  According to a fifth aspect of the present invention, there is provided a method of manufacturing the tubular body holding member, wherein the tubular body holding member according to any one of the first to fourth aspects is molded from a plate-like body.

  In this method of manufacturing a tubular body holding member, the tubular body holding member can be easily manufactured because the tubular body holding member can be formed from the plate-like body without passing through the step of connecting the bases.

  According to a sixth aspect of the present invention, in the method of manufacturing a tubular body holding member according to the fifth aspect, a plurality of the base portions connected to each other are cut into a predetermined length according to a tube diameter of the tubular body, The tubular body holding member is created by deforming into a ring shape.

  In this method of manufacturing a tube body holding member, the tube body holding member can be easily manufactured without manufacturing a lock ring using a mold manufactured according to the outer diameter of the tube body.

  As described above, the tubular body holding member and the tubular body holding member manufacturing method of the present invention provide a tubular body holding member that can be easily changed in size according to a tubular body having a plurality of outer diameters. Has an excellent effect.

It is a top view which shows the plate-shaped pipe body holding member which concerns on embodiment of this invention. It is an expansion perspective view which shows the tubular body holding member which concerns on embodiment of this invention deform | transformed into the cyclic | annular form. (A) is the state which deform | transformed the pipe body holding member cut | disconnected by predetermined length cyclically | annularly, and an exploded perspective view which shows a pipe joint main body, (B) is a pipe body holding member arrange | positioned inside a pipe joint main body. FIG. It is a perspective view which shows the tube body holding member which concerns on embodiment of this invention, (A) shows the state before a 1st opening part and a 2nd opening part mesh, (B) shows a 1st opening part and 1st opening part. The state when the two openings are engaged is shown. It is sectional drawing which shows the state by which the pipe body was inserted in the pipe joint by which the pipe body holding member which concerns on embodiment of this invention is arrange | positioned inside. It is the schematic which shows the manufacturing method of the tubular body holding member which concerns on embodiment of this invention, (A) is a perspective view which shows a flat plate. (B) is a perspective view showing a state in which a base, a first opening, and a second opening are formed by punching. (C) is a perspective view which shows the state which formed the nail | claw part in the base by press work.

  The tubular body holding member 100 and the method for manufacturing the tubular body holding member 100 according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2.

[Tube body holding member]
As shown in FIG. 1, the tube holding member 100 is formed in a plate shape in which a plurality of plate-like base portions 101 are linearly connected in one direction (arrow L direction). Hereinafter, simply “one direction” means a direction in which the bases 101 are connected in a straight line.

A claw portion 102 is formed integrally with the base portion 101. The claw portion 102 protrudes from the base portion 101 in the thickness direction of the base portion 101. As an example, the claw portion 102 is formed so as to protrude from a side portion of the base portion 101 in a direction perpendicular to the thickness direction of the base portion 101 and the connecting direction of the base portion 101 (see FIGS. 2 and 6B).
In the example shown in FIGS. 1 to 2, one claw portion 102 is formed per one base portion 101, but a plurality of claw portions 102 may be provided per one base portion 101.

  The base 101 is formed with a first opening 103 that opens in a direction intersecting with one direction. The direction intersecting with one direction is, for example, one of the width directions of the base 101 (the direction of the arrow W1). The first opening 103 is formed, for example, as a linear slit at the connection position 105 between the bases 101. The shape of the connecting position 105 in plan view is substantially U-shaped by the first opening 103. The connecting position 105 protrudes in the direction of the arrow W <b> 2 from the claw portion 102, but the bending rigidity and bending strength are lowered by the first opening 103. The shape of the first opening 103 is not limited to a linear slit, and may be a wavy slit.

  The first opening 103 opens in the opposite direction (arrow W1 direction) with respect to the protruding direction of the claw 102 from the base 101. The opening direction of the first opening 103 may be the same direction (arrow W2 direction) as the overhanging direction, or may be inclined with respect to the arrow W1 and W2 directions.

  The base 101 is formed with a second opening 104 that opens in a direction opposite to the opening direction of the first opening 103, for example, in the direction of the arrow W2. The second opening 104 is formed as, for example, a linear slit that can mesh with the first opening 103 in the annular circumferential direction when the tubular body holding member 100 is deformed into an annular shape (see FIG. 4 (B)). The second openings 104 are respectively formed on both sides of the claw portion 102 in one direction (arrow L direction). Thereby, the bending rigidity and bending strength of the base 101 on both sides of the claw 102 in one direction (arrow L direction) are lowered. The shape of the second opening 104 is not limited to a linear slit, and may be a wavy slit.

[Placement of pipe body holding member in pipe joint]
Next, arrangement | positioning of the pipe body holding member 100 in the pipe joint main-body part 202 in the pipe joint 201 is demonstrated using FIGS. As shown in FIG. 1, the tube holding member 100 is initially formed in a plate shape. When the tubular body holding member 100 is disposed in the pipe joint 201 (FIG. 3), the tubular body holding member 100 is cut at a predetermined length, for example, cutting lines C1 and C3, and then shown in FIG. Thus, it is deformed into an annular shape. At this time, the claw portion 102 is projected to the inside of the annular shape (for example, the axial shape and the radially inner side of the annular shape). Note that the cutting lines C <b> 1 and C <b> 3 both correspond to the position of the first opening 103.

  As shown in FIGS. 3A and 3B, the tubular body holding member 100 is disposed in a tubular body insertion space 203 formed inside the tubular joint 201 in the annular state. Thereby, the protrusion direction of the nail | claw part 102 turns into the radial inside of the tubular body insertion space 203. FIG.

  In the example shown in FIGS. 2 and 3, the annular tube holding member 100 is C-shaped and is open in the circumferential direction (arrow C direction), but the tube holding member 100 has an annular shape. The shape of time is not limited to this. For example, in FIG. 1, the plate-shaped tube body holding member 100 is cut along cutting lines C2 and C3. The position of the cutting line C2 corresponds to the position of the second opening 104 that is farther from the cutting line C1 when viewed from the cutting line C3 and is adjacent to the first opening 103 where the cutting line C1 is located. By setting the cutting position in this way, the first opening 103 is located at one end of the tube body holding member 100 and the second opening 104 is located at the other end.

  The tubular body holding member 100 is deformed into an annular shape as shown in FIG. 4A, and the first opening 103 and the second opening 104 located at both ends thereof are fitted in the direction of the arrow D to form an annular shape. When engaged in the circumferential direction of the shape, the tubular body holding member 100 is closed in the circumferential direction (FIG. 4B). Thereby, the elasticity of the tube body holding member 100 prevents the tube body holding member 100 from extending again in a straight line, and can maintain the state in which the tube body holding member 100 is deformed into an annular shape. The tube holding member 100 may be deformed in this manner and disposed in the pipe joint main body 202 (FIGS. 3 and 5).

[Pipe fittings]
In FIG. 5, the pipe joint 201 includes a pipe body holding member 100, a pipe joint main body 202, a water stop member 204, and a cap 205. The tube body holding member 100 functions as a lock ring for the tube body 300.

  The pipe joint main body 202 is formed in a tubular shape, and a pipe body insertion space 203 is provided on the inner side. The tubular body insertion space 203 is a space for inserting the tubular body 300 from the first side ((I) in FIG. 5) of the tubular joint 201.

An annular water stop member 204 that keeps the pipe body 300 and the pipe joint 201 watertight by contacting the outer surface 301 of the pipe body 300 is arranged inside the pipe joint main body 202.
In the example shown in FIG. 5, the water stop member 204 may have a so-called inner surface water stop structure in addition to the so-called outer surface water stop contacting the outer surface 301 of the tube body 300. In the configuration of the inner surface water stop, an inner cylinder inserted inside the tube body 300 is provided in the pipe joint main body 202, and the water stop member 204 is disposed on the outer periphery of the inner cylinder, so that the water stop is provided inside the tube body 300. The member 204 is brought into contact.

  The water stop member 204 is made of, for example, an elastic 0 ring, and is deformed so as to be in close contact with the pipe joint main body 202 when the pipe body 300 is inserted into the pipe body insertion space 203.

  As shown in FIG. 3, the tube body holding member 100 is in a state of being deformed into an annular shape, and the direction in which the claw portion 102 protrudes toward the second side ((II) in FIG. 5) of the pipe joint 201. Thus, it is arranged in the tubular body insertion space 203.

  The cap 205 is formed in an annular shape, and is disposed on the first side (I) of the tube body holding member 100 as shown in FIG. 5, with respect to the end portion on the first side (I) of the pipe joint main body portion 202. For example, it is fixed by screwing.

  In the pipe joint 201 configured as described above, when the pipe body 300 is inserted into the pipe body insertion space 203, the claw portion 102 of the pipe body holding member 100 bites into the outer surface 301 of the pipe body 300, and the pipe body 300. Lock. This prevents the tubular body 300 from coming out of the pipe joint 201. At this time, the outer surface 301 of the pipe body 300 and the inner peripheral surface of the pipe joint main body 202 are sealed watertight by the water stop member 204. In this way, the pipe body 300 is connected to the pipe joint 201 with one touch.

(Function, effect)
Next, the operation of the tube holding member 100 according to the embodiment of the present invention will be described.

  As shown in FIG. 1, the tube body holding member 100 includes a claw portion 102 formed integrally with a plate-like base portion 101, and is formed in a state where a plurality of base portions 101 are connected in a straight line in one direction. The As shown in FIGS. 3A and 3B, when the tubular body holding member 100 is disposed in the tubular body insertion space 203 formed inside the tubular joint 201, the protruding direction of the claw portion 102. The tubular body holding member 100 is deformed into an annular shape so that is located radially inside the tubular body insertion space 203. At that time, the tube body holding member 100 is cut or the like according to the dimensions of the tube body 300 (FIG. 1) to arbitrarily set the dimension (inner diameter) when the tube body holding member 100 is deformed into an annular shape. be able to. Thereby, it is not necessary to create a lock ring having a plurality of dimensions corresponding to the outer diameter of the tubular body 300. Specifically, the tube holding member 100 corresponding to the outer diameter of the tube 300 can be easily obtained without producing a mold having many dimensions according to the outer diameter of the tube 300, Generation | occurrence | production of the pulling-out of the pipe body 300 from the pipe joint 201 by lack of the amount of biting of the nail | claw part 102, and the malfunction of the water leakage by the claw part 102 penetrating the pipe body 300 can be suppressed.

  In addition, it is preferable that the tubular body holding member 100 is cut into a length corresponding to a length of at least half a circumference of the tubular body 300. The length can be appropriately adjusted according to the force with which the pipe body 300 is pulled out from the pipe joint 201 by the pressure generated inside the pipe body 300 or the like.

As shown in FIGS. 1 and 2, since the first opening 103 is formed in the base 101 so as to intersect with one direction, the force required to bend the tube holding member 100 can be reduced. it can. For this reason, the tubular body holding member 100 can be easily deformed into an annular shape.
As shown in FIG. 1 and FIG. 2, the opening is formed at the connecting position between the bases 101, so that the tube holding member 100 can be easily cut at the boundary between the bases 101. The number of the base portions 101 can be easily adjusted according to the outer diameter of the tube body 300.

[Method for manufacturing tube holding member]
As shown in FIG. 6A, the tube holding member 100 is formed from a strip-shaped flat plate 400 which is an example of a plate-like body. First, as shown in FIG. 6B, the base plate 101, the first opening portion 103, and the second opening portion 104 are formed by punching the flat plate 400. Subsequently, as shown in FIG. 6C, a claw portion 102 is formed by bending a part of the base 101 by press working. Thereby, the plate-shaped tube body holding member 100 can be manufactured.

In addition, the base part 101, the 1st opening part 103, the 2nd opening part 104, and the nail | claw part 102 can be shape | molded simultaneously by performing punching and press work simultaneously. Moreover, the nail | claw part 102 can also be provided in the base 101 by adhesion | attachment or welding.
In addition, in order to suppress the strength reduction by generation | occurrence | production of rust, it is preferable that the material of the flat plate 400 is stainless steel.

  As shown in FIG. 1, the plate-shaped tube body holding member 100 is cut into a predetermined length according to the tube diameter of the tube body 300 (FIG. 5) and then deformed into an annular shape to hold the annular tube body. The member 100 is created (FIG. 2).

According to this method for manufacturing a tubular body holding member, the tubular body holding member 100 can be easily manufactured because the tubular body holding member 100 can be formed from the flat plate 400 without a step of connecting the base portions 101 to each other. I can do it.
Further, the tube holding member 100 can be easily attached without manufacturing a lock ring (not shown) using a mold (not shown) manufactured according to the outer diameter of the tube 300 (FIG. 6). Can be manufactured.

[Other Embodiments]
In the above embodiment, the first opening 103 is formed in the tube holding member 100 at the connection position 105 between the bases 101, but the position of the first opening 103 is not limited to the connection position 105. . Further, the tube holding member 100 may be configured not to include the first opening 103.

  In addition, the tube holding member 100 is provided with the second opening 104, but may be configured without the second opening 104.

  DESCRIPTION OF SYMBOLS 100 ... Tube body holding member, 101 ... Base part, 102 ... Claw part, 103 ... 1st opening part, 104 ... 2nd opening part, 201 ... Pipe joint, 203 ... Pipe body insertion space, 300 ... Pipe body, 301 ... Pipe Body outer surface, 400 ... flat plate (plate-like body)

Claims (6)

A plate-like base;
A claw portion that protrudes from the base portion in the thickness direction of the base portion and is formed integrally with the base portion;
A plurality of the bases are formed in a state of being connected in a straight line in one direction,
In a tubular body insertion space formed inside the pipe joint, a plate-like shape is arranged in a state of being deformed into an annular shape so that the protruding direction of the claw portion is radially inward of the tubular body insertion space. Tube holding member.   The tubular body holding member according to claim 1, wherein a first opening that opens in a direction intersecting with the one direction is formed in the base.   The tube holding member according to claim 2, wherein the first opening is formed at a connection position between the bases.   A second opening formed in the base in a direction opposite to the opening direction of the first opening, and meshable with the first opening in the circumferential direction when deformed into the annular shape. The tubular body holding member according to claim 2 or 3, comprising an opening.   The manufacturing method of a tubular body holding member which shape | molds the tubular body holding member of any one of Claims 1-4 from a plate-shaped body.   6. The tubular body holding member according to claim 5, wherein a plurality of the base portions connected to each other are cut into a predetermined length according to a tube diameter of the tubular body and deformed into an annular shape to create the tubular body holding member. Production method.