JP2001082646A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily mount a connector on a flexible pipe by forming a cut part capable of opening to a seal member on the connector, and opening the cut part. SOLUTION: A seal member 15A is manufactured by rubber and the like having elasticity, each length of the seal member 15B and 15A is different from that of a projection body 15b formed in an inner circumference, and the projection body 15b is fitted to a part of a recessed groove. In each of seal members 15A, 15B, one cut part 15c is formed toward in a center part, and the cut part 15c is formed freely to open. When the seal member 15A (15B) is mounted on a flexible pipe, it can be mounted while opening the cut part 15c, and thereby, there is not such a botheration that the seal member 15A (15B) is mounted while rotating the projection body 15b along the recessed groove formed on an outer peripheral surface of the flexible pipe.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector capable of preventing leakage, and more particularly to a seal member.

[0002]

2. Description of the Related Art A conventional flexible pipe connector will be described with reference to FIGS. FIG. 5 is a front view and a sectional view of a state before the connector is tightened and attached to the side plate 100 of the control box, FIG. 6A is a front view and a sectional view of the seal member, and FIG. It is. FIG. 7 is a sectional view after the connector is tightened. As is well known, the flexible tube 1 is formed by attaching a band-shaped metal plate 2 to an elastic member 4 of a synthetic resin on the outside thereof through an extruder (not shown) while overlapping in an S-shaped cross section. It is a spiral tube formed by coating and having a concave groove 1a formed on its outer peripheral surface and a spiral groove 3 formed on its inner peripheral part.

A connector 10 for connecting the flexible pipe 1 includes a lock nut 11, an O-ring 12, a nipple 13, a cap 14 covering the end of the flexible pipe, a sealing member 15, a sleeve ring 20, and a cap nut 21. It consists of. The sealing member 15E is made of synthetic resin, rubber, or the like, and has a concentric concave groove 15a formed in the center of the outer periphery. When the cap nut 21 is tightened,
The inner peripheral side of the concave groove 15a of the seal member 15E is deformed in a convex shape, so that the inner diameter becomes small, and the inner peripheral side of the flexible groove 1 is tightly sealed to form a seal.

[0004]

However, even if the inner peripheral side of the concave groove 15a of the seal member 15E is tightened and deformed to a convex shape, the concave groove 1a formed on the outer periphery of the flexible tube 1 is inclined. Therefore, since the fitting is not performed over the entire peripheral surface of the concave groove 1a, a gap 15x is generated and the sealing becomes insufficient. Therefore, since the concave groove 1a on the outer peripheral surface of the flexible pipe 1 is spirally connected and formed, the leaked liquid is formed by the concave groove 1a.
To be discharged (see FIG. 7). Therefore,
The present invention provides a connector that can solve such a problem.

[0005]

According to a first aspect of the present invention, there is provided a connector in which a convex body is formed on an inner peripheral surface of a sealing member so as to be fitted into a spiral groove formed on an outer peripheral surface of a flexible tube. A good seal is formed by fitting the convex body and the concave groove. In addition, the connector according to the second aspect can be easily mounted on a flexible pipe by forming a cut portion that can be opened in the seal member and opening the cut portion.

In the connector of the third aspect, by forming the seal member to have a small thickness at a position facing the cut portion, even the seal member made of a hard material can be easily opened from the cut portion. According to the connector of the fourth aspect, the seal member is made of rubber, and can be manufactured at low cost, and can be fitted and adhered sufficiently to achieve a good seal. Further, in the connector according to the fifth aspect, since a convex body is formed on a part of the inner peripheral surface of the seal member, the concave groove formed in a spiral connection is blocked by the convex body, thereby preventing leakage. Can be achieved.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The connector of the present invention will be described with reference to the drawings. FIG. 1 is a front view and a sectional front view of a state where the connector is attached to a side plate 100 of a control box before the connector is tightened. ) Is a front view and a front sectional view of the seal member 15A, (B) is a side view, FIG. 2C is a front view and a front sectional view of another shape of the seal member 15B, (D) is a side view, and FIG.
FIG. 4 is a sectional view after the connector is tightened. In addition, the same reference numerals are given to the same components as those in the related art.

[0008] The flexible tube 1 is, as is well known,
While overlapping the band-shaped metal plate 2 in an S-shaped cross section,
An elastic member 4 made of a synthetic resin is coated on the outside through an extruder (not shown), and a concave groove 1a is formed on an outer peripheral surface thereof, and a spiral groove 3 is formed on an inner peripheral portion thereof. Spiral tube. The spiral tube is made of a synthetic resin in addition to a metal tube. In addition to the one formed by overlapping the band-shaped metal plate 2, a continuous unevenness is formed on the outer peripheral surface to form a flexible tube. Also included are those formed in. A connector 10 for connecting the flexible pipe 1 includes a lock nut 11, an O
It comprises a ring 12, a nipple 13, a cap 14 covering the end of a flexible tube, a sealing member 15, a sleeve ring 20, and a cap nut 21.

A projection 13a formed on the cylindrical nipple 13
An O-ring groove 13b is formed on the left side of the projection 13a, and a screw 13c screwed to the lock nut 11 is provided on the left outer peripheral surface of the projection 13a, while a cap nut 21 is provided on the opposite outer peripheral surface. 13d are formed respectively.
Reference numeral 12 denotes a waterproof O-ring, and the lock nut 11
Is a seal member that is in close contact with the side plate 100 of the control box via

[0010] The sealing member 15 shown in FIGS.
(15A) is a cylindrical body made of rubber or the like having elasticity, which can be inserted into the nipple 13 and has a concentric concave groove 15a formed in the center of the outer periphery thereof. On the inner periphery of the sealing member 15A, a convex body 15b which can be fitted to correspond to about one round of a concave groove 1a formed on the outer peripheral surface of the flexible tube 1 is provided.
Is formed. Also, the sealing member 15 (15B) shown in FIGS. 2C and 2D differs from the sealing member 15A in the length of the convex body 15b formed on the inner periphery, and the length thereof is a concave groove. A convex body 15b that can be fitted is formed corresponding to a part of 1a. Further, the seal members 15A and 15B are formed with one cut portion 15c toward the center, and can be opened at the cut portion 15c. Therefore, when the sealing member 15A (15B) is mounted on the flexible tube 1, the cutting portion 15c can be opened and mounted on the flexible tube 1.
There is no inconvenience of mounting the convex body 15b while rotating it along the concave groove 1a formed on the outer peripheral surface of the main body.

Further, the sealing member 15 (15A, 15B)
Is preferably made of rubber, because frictional resistance is increased and rotation cannot be performed smoothly. Therefore, by forming this cut portion 15c, mounting is possible without rotation, which is preferable.
On the other hand, in order to smoothly rotate the seal member 15 without forming the cut portion 15c, a gap between the groove 1a formed on the outer peripheral surface of the flexible tube 1 must be formed large. It is clear that when the nipple 13 and the cap nut 21 are tightened with the seal member 15 having the shape, the seal becomes insufficient. The cutting portion 1 of the seal member 15
The shape of the mating surface of 5c may be an elliptical shape, a wavy shape, a mountain shape, or the like, in addition to a plane (straight line). Good.

Reference numeral 14 denotes a cap to be placed on the end of the flexible tube 1, which is formed by bending a metal into a U-shape and can be attached to the end of the flexible tube 1. Reference numeral 20 denotes a sleeve ring, which is used when the sealing member 15 is screwed with the nipple 13 and the cap nut 21.
The seal member 15 is made of a hard material so as not to be rotated, and the twist of the seal member 15 itself is prevented.

Next, a method of using the connector having the above configuration will be described. First, a nipple 13 with an O-ring 12 mounted therein is inserted into a hole formed in a side plate 100 of a control box, and tightened with a lock nut 11. Next, after the cap nut 21 is extrapolated from the end of the flexible tube 1, the sleeve ring 20
, And put a cap 14 on the end of the flexible tube 1,
After the following sealing member 15 is attached, it is inserted into the nipple 13. In mounting the seal member 15 on the outer peripheral surface of the flexible tube 1, when the cut portion 15 c is not formed in the seal member 15, before covering the cap 14, from the end of the flexible tube 1, Groove 1 formed on the outer peripheral surface
It is necessary to mount the convex body 15b while rotating it along the line a. However, since the shape of the convex body 15b is formed so as to be able to adhere to the concave groove 1a formed on the outer peripheral surface of the flexible tube 1 so as to maintain airtightness, the seal member 15 must be mounted while rotating. Is accompanied by difficulty due to high frictional resistance. On the other hand, if the cut portion 15c is formed on the seal member 15, the cut portion 15c is opened, and the convex body 15b formed on the inner peripheral surface of the seal member 15 is formed on the outer peripheral surface of the flexible tube 1. It is mounted so as to match the concave groove 1a.

When the cap nut 21 with the sleeve ring 20 mounted thereon is tightened to the nipple 13, the sealing member 1
5 (15A, 15B) is not twisted, and the inner peripheral side of the concave groove 15a formed in the central part of the outer periphery is deformed in a convex shape, so that the inner diameter is reduced, the adhesion is improved, and the sealing member 15 (15A, 15B) is improved. 15A, 15B) are fitted and fitted into the concave grooves 1a of the flexible tube 1. As a result, the convex body 15b
Is formed corresponding to about one circumference of the groove 1a.
Even if the convex body 15b is the sealing member 15B formed corresponding to the concave groove 1a, the leakage liquid transmitted through the spirally formed concave groove 1a is stopped at the convex body 15b. To prevent leakage.

Next, FIGS. 4A, 4B, 4C, and 4D
FIG. 9 is a front view, a front sectional view, and a side view of seal members 15C and 15D having other configurations. The seal member 15C has substantially the same configuration as the seal member 15A, and the seal member 15D has approximately the same configuration as the seal member 15B. The difference is that a notch groove 15d is formed at a position facing the cutting portion 15c to reduce the thickness. This cutout groove 15d is provided with a seal member 15C,
Even when the material of 15D is hard and cannot be easily opened from the cut portion 15c, it can be easily bent and opened because the cutout groove 15d is thin. The position where the notch groove 15d is formed is the cutting portion 1
Needless to say, any position may be used as long as it can be easily opened when opening from 5c, and may be any position substantially opposite (opposite to) the cut portion 15c. Also, the sealing member 15
It goes without saying that the features of the seal members 15A, 15B, 15C, and 15D can be appropriately configured according to the purpose and can be applied to connectors other than flexible pipes.

[0016]

According to the first aspect of the present invention, a good seal is achieved by fitting a concave groove formed on the outer periphery of the flexible tube and a convex body on the inner peripheral surface of the seal member. Further, since the connector according to the second aspect of the present invention has a cut portion that can be opened in the seal member, it can be easily mounted on a flexible pipe. In the connector of the third aspect, the thickness of the seal member at the position facing the cut portion is formed thin, so that even the seal member made of a hard material can be easily opened from the cut portion.
In the connector according to the fourth aspect, the seal member is made of rubber, can be manufactured at low cost, and can be sufficiently fitted and adhered.
Good sealing can be achieved. In the connector according to the fifth aspect, since a convex body is formed on a part of the inner peripheral surface of the seal member, the concave groove formed in a spiral connection is blocked by the convex body, so that leakage is prevented. Can be planned.

[Brief description of the drawings]

FIG. 1 is a front view and a sectional view of a connector attached to a side plate of a control box before the connector is tightened.

2A is a front view and a front sectional view of a seal member 15A, FIG. 2B is a side view, FIG. 2C is a front view and a front sectional view of a seal member 15B, and FIG. 2D is a side view.

FIG. 3 is a sectional view of the connector after the connector is tightened.

4A is a front view and a front sectional view of a seal member 15C, FIG. 4B is a side view, FIG. 4C is a front view and a front sectional view of a seal member 15D, and FIG. 4D is a side view.

FIG. 5 is a front view and a cross-sectional view of a conventional connector attached to a side plate of a control box before fastening the connector.

FIG. 6A is a front view and a front sectional view of a conventional sealing member, and FIG. 6B is a side view.

FIG. 7 is a cross-sectional view of a connector after a conventional connector has been tightened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flexible pipe 1a Concave groove 13 Nipple 15 (15A, 15B, 15C, 15D) Seal member 15a Concave groove 15b Convex body 15c Cutting part 15d Notch groove 21 Cap nut

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] September 22, 1999 (September 9, 1999
2)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Change

[Correction contents]

FIG. 2

[Procedure amendment 3]

[Document name to be amended] Drawing

[Correction target item name] Figure 3

[Correction method] Change

[Correction contents]

FIG. 3

[Procedure amendment 4]

[Document name to be amended] Drawing

[Correction target item name] Fig. 7

[Correction method] Change

[Correction contents]

FIG. 7 ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] September 24, 1999 (1999.9.2)
4)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 4

[Correction method] Change

[Correction contents]

FIG. 4 ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] April 5, 2000 (200.4.5)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005]

According to the first aspect of the present invention, the connector can be easily mounted on a flexible pipe by forming an openable cut portion in the seal member and opening the cut portion. In the connector according to the second aspect, a convex body is formed on the inner peripheral surface of the sealing member so as to be fitable into a spiral groove formed on the outer peripheral surface of the flexible pipe. Good sealing is achieved by the fitting of the grooves.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

[0016]

According to the first aspect of the present invention, the connector has a cut portion that can be opened in the seal member, so that the connector can be easily mounted on a flexible pipe. The connector of claim 2 is
A good seal is achieved by fitting the concave body formed on the outer periphery of the flexible tube and the convex body on the inner peripheral surface of the seal member. In the connector of the third aspect, the thickness of the seal member at the position facing the cut portion is formed thin, so that even the seal member made of a hard material can be easily opened from the cut portion.
In the connector according to the fourth aspect, the seal member is made of rubber, can be manufactured at low cost, and can be sufficiently fitted and adhered.
Good sealing can be achieved. In the connector according to the fifth aspect, since a convex body is formed on a part of the inner peripheral surface of the seal member, the concave groove formed in a spiral connection is blocked by the convex body, so that leakage is prevented. Can be planned.

Claims (5)

[Claims] 1. A connector which is used for a flexible pipe having a spiral concave groove formed on an outer peripheral surface thereof, wherein a seal member is sandwiched between a cylindrical nipple and a cap nut, and A connector, wherein a convex body is formed on a peripheral surface of the flexible tube so as to fit into a concave groove formed on an outer periphery of the flexible tube. 2. The connector according to claim 1, wherein an openable cut portion is formed in the seal member. 3. The connector according to claim 1, wherein a thickness of the seal member at a position facing the cut portion is reduced. 4. The connector according to claim 1, wherein the sealing member is made of rubber. 5. The connector according to claim 1, wherein the convex body is formed on a part of the inner peripheral surface of the seal member.