JP2002188780A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hose connector for a synthetic resin hose allowing easy removal of a sleeve. SOLUTION: In this hose connector, a nut screw 1c for a cap nut and a hose-inserted tube body 2 for inserting a hose therein are formed on the right side of the rotating head part 1a of a nipple, and an expanded groove 3 is formed in the peripheral surface thereof. A spiral irregular part 10e is formed on the inner surface of the cap nut 10A, and a flat tilted pressed part 5e is formed on the sleeve 5B. By loosening the cap nut 10A, the cap nut 10A and the sleeve can be removed, and the hose connector can be re-used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a connector used for a hose or a tube.

[0002]

2. Description of the Related Art As a conventional connector, a hose connector will be described with reference to FIG. 10 showing a connection cross section thereof. The hose connector 100 is composed of a nipple 111, a sleeve 112 and a cap nut 110, and is a composite. The hose 101 made of resin or the like is connected. Nipple 11
1, a rotating head 111a for a spanner is formed,
On the left side, a device screw 111b for mounting the device is formed, and on one right side, a nut screw 111c for a cap nut and a hose insertion cylinder 115 are formed. In addition, a convex portion 115a is formed on the outer surface of the hose insertion tube 115 in the circumferential direction in order to prevent the hose 101 from being pulled out.

The sleeve 112 is an elastic body such as a synthetic resin or rubber, and the inner surface 112a of the sleeve 112 is
The outer surface 112b of the sleeve is formed so as to be fittable with the cap nut 110, while the outer surface 112b of the sleeve is formed so as to be fittable with the cap nut 110. A pressing portion 112c is formed.

[0004] On the left inner surface of the cap nut 110, an inner screw 110a screwed to a nut screw 111c formed on the nipple 111 is formed. On the right inner surface, a pressing portion 112c formed on the sleeve 112 is provided. Thus, an inclined pressed portion 110c capable of pressing the sleeve 112 in the inner circumferential direction is formed. Then, when the cap nut 110 is tightened through the sleeve 112, the hose 101 made of synthetic resin or the like is reduced in the inner diameter direction by the pressing portion 112c formed on the outer surface on the right side of the sleeve 112, and Tightly bonded.

[0005]

In the connector having the above structure, the hose is clamped at only one place.
The tensile strength is low, and the hose made of synthetic resin or the like has low elasticity, and the aging causes the clamping force to weaken, causing leakage and causing economic loss. Also, when connecting a hose with a conventional connector, loosening the cap nut, removing the hose and removing the sleeve, there is a problem that the sleeve is in close contact with the hose and cannot be easily removed. When tightening, there is a problem that the sleeve also rotates together, that is, so-called co-rotation occurs, and the tightening cannot be performed properly. In the case of a structure in which a vertical O-ring groove is formed in the hose insertion cylinder 115 and sealing is performed via the O-ring, the O-ring separates from the O-ring groove when the hose is inserted. There is a problem that sealing cannot be performed well. Therefore, the present invention provides a connector that solves such a problem.

[0006]

According to the first aspect of the present invention, there is provided a connector comprising:
For example, as shown in FIG. 3, the rotating head 1 of the nipple 1A
On the right side of a, a nut screw 1c for a cap nut and a hose insertion cylinder 2 for inserting a hose are formed, and an expanding groove 3 is formed in a circumferential shape. Then, when tightened with the cap nut 10C, the hose 101 and the sleeve 5B are tightly inserted into the widening groove 3, and at the same time, the spiral uneven portion 10e forming a spiral groove on the inner surface on the right side of the cap nut is attached to the right side of the sleeve 5B. The sleeve 5B is engaged with (pressed on) the pressed portion 5e having a flat inclined shape formed on the outer surface of the sleeve 5B, thereby reducing the sleeve 5B in the inner diameter direction.

At this time, when the cap nut 10C is advanced while rotating, the sleeve 5B tightens the hose 101, so that a frictional force is applied to the inner face of the sleeve and the outer face of the hose, and between the outer face of the sleeve and the inner face of the cap nut. Occurs. However, the spiral uneven portion 1 formed on the inner surface on the right side of the cap nut 10C
When 0e engages with the sleeve 5B, the contact area is small, so that the frictional force is small, and since the spiral uneven portion 10e is screw-shaped, even after riding on the sleeve, when the cap nut is turned, the cap nut is removed. Also, the cap nut can be easily tightened, and the sleeve can be reduced in the radial direction to prevent leakage.
Further, the spiral uneven portion 10e having a spiral groove formed on the inner surface of the cap nut 10C and the pressed portion 5e formed on the sleeve are in a fitted state at the time of assembling, but the cap nut 10A screwed into the nipple 1A is provided. By loosening, the slanted pressed portion 5e of the sleeve and the spiral uneven portion 10e formed on the inner surface of the cap nut can be easily detached, and the cap nut 10C and the sleeve 5B can be removed, and the connector can be reused. It becomes possible.

A connector according to a second aspect of the present invention is, as shown in FIGS. 8 and 9, for example, a hose plug cylinder 2 for inserting a nut screw 1c for a cap nut and a hose on the right side of a rotating head 1a of a nipple 1B. Are formed, and the expanding groove 3 is formed in a circumferential shape. Also, the outer peripheral surface of the sleeve 5D has irregularities 68.
Is formed. On the left side of the cap nut 10B, there is formed an inner screw 10a to be screwed with the nut screw 1c, and on the right side, a sleeve presser 6 whose inner surface is flat and inclined.
0A is rotatably interpolated. This connector has a small contact area when tightening the cap nut 10B due to the unevenness 68 formed on the outer peripheral surface of the sleeve 5D, so that the connector can be assembled with a small tightening force.

FIG. 4B shows a connector according to a third aspect of the present invention.
As shown in (D), a concave portion 52 (or a protrusion 55) is formed in the circumferential shape on the right side of the rotating head of the nipple 1B, and a nut screw 1c for a cap nut and a hose difference for inserting a hose. An insertion cylinder 2 is formed. The sleeve 5C has a protrusion 55 (or recess 52) that can be fitted into the recess 52 (or protrusion 55) formed in the nipple 1B.
Therefore, even when the cap nut is turned, the concave portion 52 and the protruding portion 55 are in the fitted state, so that the sleeve 5C does not rotate.
Co-rotation can be prevented and can be firmly tightened.

[0010] The connector of claim 4 is, for example, shown in FIG.
As shown in (C), a circumferential projection 5a is formed on the inner surface of the sleeve 5C.
Is formed, the inner surface of the sleeve and the outer surface of the hose are brought into closer contact with each other, so that leakage can be more reliably prevented and the bonding strength can be increased.
The connector according to claim 5 is a hose insertion cylinder 2 of the nipple 1.
The outer circumference of O is inclined from the hose insertion side to the rear side.
By forming the ring groove 50a, when the hose is inserted, the O-ring 50 is inserted into the inclined O-ring groove 50a, and the detachment from the O-ring groove 50a can be prevented.

The connector according to claim 6 is, for example, shown in FIG.
As shown in FIG. 6 (F) and FIG. 6 (A), the sleeve holding body 60A is moved by tightening the cap nut 10B, and the hose is tightened via the sleeve 5C inserted into the hose. Locking claw 63 at end
And a concave portion 67 capable of receiving the locking claw 63 is formed in the sleeve pressing body 60A. So, cap nut 1
When 0B is tightened, the sleeve 5C can be pressed in the inner diameter direction while moving the sleeve pressing body 60A, and can be brought into close contact with the hose. On the other hand, when the cap nut 10B is loosened, the sleeve retainer 60A can be removed together with the cap nut 10B, so that the sleeve 5C can be easily removed from the hose.

Further, the connector according to claim 7 is, for example, shown in FIG.
As shown in FIG. 3 (A), the sleeve presser 303B is moved via a cap nut 301B, and the hose is tightened by a sleeve 302 inserted through the hose 101. The outer peripheral surface of the sleeve presser 303B has a stepped portion. 205d and a concave portion 205e are formed, and a convex portion 210d that can be fitted to the step portion 205d is formed on the inner peripheral surface of the cap nut 301B.
And a spire 210e that can be inserted into the recess 205e. Then, when the cap nut is tightened, the sleeve presser 303B moves and presses the sleeve 302 in the inner diameter direction while moving so that the sleeve 302 comes into close contact with the hose. On the other hand, cap nut 301B
When the sleeve is loosened, the sleeve presser 303B can be removed together with the cap nut, so that the sleeve can be easily removed from the hose (FIG. 13B).

The connector according to claim 8 is, for example, as shown in FIG.
As shown in (B), the loose ring 205 is moved via the cap nut 210 to tighten the seal member 202 inserted into the cable 240.
A concave portion 205g and a spire body 205f are formed on the outer peripheral surface of 05, and a convex portion 210g that can be fitted into the concave portion 205g is formed on the inner peripheral surface of the cap nut 210, and the spire body 205f can be inserted. The concave portion 210f is formed. In the cap nut 210, the loose ring 205 and the seal member 202 having this structure, when the cap nut 210 is loosened,
Since the loose ring 205 can be removed together with the cap nut 210, the seal member 202 can be easily removed from the cable.

The connector according to claim 9 is, for example, as shown in FIG.
As shown in (A), the loose ring 205 is moved via the cap nut 210 to tighten the seal member 202 inserted through the cable 240.
A convex portion 210h is formed on the inner peripheral surface of the loose ring 20.
5 A concave groove 205h capable of locking the convex portion 210h is formed on the outer peripheral surface. In the cap nut 210, the loose ring 205 and the cable 240 having this structure, the cap nut 21 is also used.
When the zero is loosened, the loose ring 205 can be removed together with the cap nut 210, so that the seal member 202 can be easily removed from the cable.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A hose connector will be described as a connector of the present embodiment with reference to the drawings. FIG. 1A is a front sectional view of a nipple, and FIG. B) is a front sectional view of the sleeve, FIGS. 1 (B-1) to 1 (B-3) are A to A sectional views, and FIG. 1 (B-4).
1 and (B-5) are views taken along arrows B and B, and FIG. 1 (C) is a front sectional view of the cap nut. FIGS. 2A, 2B, and 2C are views showing a process of connecting a hose 101 made of synthetic resin or the like.

A turning head 1a for a spanner is formed substantially at the center of a cylindrical nipple 1A made of metal or the like, and a device screw for mounting a device is provided on the left side of the turning head 1a. 1
On the other hand, a cylindrical hose insertion cylinder 2 into which the hose 101 is inserted is extended on the right side. In addition, a protrusion 2a slightly larger than the inner diameter of the hose 101 is formed on the outer periphery of the hose insertion cylindrical body 2 so as to be fittable to the inner diameter of the hose 101, and serves to prevent the hose 101 from slipping. The method of mounting the device on the left side of the nipple 1A is not limited to the device screw 1b type, but may be connected via a band or the like, and may be appropriately adapted to the type of device.

A nut screw 1c for a cap nut 10A for fixing a sleeve 5A, which will be described later, is formed on the right side of the rotating head 1a, and an upper tapered portion is formed on the right side 1d of the rotating head 1a. An expanded groove 3 having a trapezoidal cross section is formed by a circumference 3a and a lower tapered portion 3b. In addition, the expansion groove 3
Then, when the distal end portion 101a of the hose 101 is inserted, the distal end portion 101a comes into close contact with the lower taper portion 3b to be in an expanded state, and the inner surface of the hose 101 and the lower taper portion 3b come into close contact with each other, It is possible to improve the prevention of leakage and the prevention of detachment. Therefore, the cross-sectional shape of the widening groove 3 may be a shape that achieves the above purpose, for example, a bowl shape or the like.

Next, the sleeve 5A shown in FIG. 1B (front sectional view) will be described.
On the outer surface of a sleeve 5A made of rubber or the like, there is formed a projection 5b capable of abutting on the right side 1d of the nipple 1A, and on the right side thereof corresponds to a pressing portion 10b formed on a cap nut 10A described later. The pressed portion 5c to be pressed is formed so as to be inclined downward and to the right, and a flat cylindrical portion 5d is further provided on the right extended portion.
Is formed. On the other hand, on the inner surface of the sleeve 5A, the mountain-shaped pitch is rough, and the angle is desirably 80 ° or more in order to easily bite (closely contact) the outer surface of the hose 101.
A peripheral protrusion 5a is formed.

The sleeve 5A may be formed in a ring shape, but as shown in FIG. 1 (B-1) showing a cross section taken along line AA, a part of the circumference is cut in the direction of the center of the circle. It is desirable that the cut portion 22 (22A) be formed to be openable.
When the sleeve 5A is mounted on the hose 101, the sleeve 5A may be opened at the cut portion 22 and mounted on the hose 101, so that the sleeve 5A can be easily mounted and the tightening force in the inner diameter direction of the hose 101 can be increased.

The shape of the cut portion 22 is such that, in addition to the cut portion 22A cut in the center direction of the circle, the cut portion 22B formed in an inclined shape (FIG. 1 (B-2)) and the cut portion 22A formed in a step shape. The cut portion 22C may have various shapes such as a cut portion 22C (FIG. 1 (B-3)), and the cut portion 22 may have a shape as shown in FIG. Perpendicular to the leading and trailing edges,
Alternatively, it may be formed in an inclined shape (FIG. 1 (B-5)).

Next, referring to FIG.
A will be described. An inner screw 10a screwed to a nut screw 1c formed on the nipple 1A is formed on a left inner surface of a cap nut 10A formed of a metal, a hard resin, or the like, and an inner surface of a central portion is formed. A parallel portion 10d that presses the pressed portion 5c formed on the sleeve 5A in the inner diameter direction;
Further, the flat cylindrical portion 5d of the sleeve 5A is pressed in the inner diameter direction, and at the same time, the inclined pressing portion 10b for making it easy to ride on the cylindrical portion 5d of the sleeve 5A. A spiral concave-convex portion 10c having an inner diameter that acts to cause the movement (to the left) is formed.

Next, a method of connecting the hose 101 using the hose connector having the above-described configuration will be described with reference to FIG.
Description will be made with reference to (B) and (C). First, the cap nut 10A is inserted from the hose distal end portion 101a, and then the sleeve 5A is mounted. However, when the ring-shaped sleeve 5A is used, rotational friction occurs due to the circumferential protrusion 5a formed on the inner surface, and the sleeve 5A is mounted. Although it is difficult to use the sleeve 5A shown in FIG. 1B in which the cut portions 22A, 22B, and 22C are formed in a part of the circumference, the cut portion 22
A, 22B, and 22C can be easily mounted by opening.

The distal end portion 101a of the hose is inserted into the hose plug-in tube 2. The protrusion 2a formed on the hose plug-in tube 2 is a protrusion slightly larger than the inner diameter of the hose 101, so that it can be easily inserted. it can. Then, as shown in FIG. 2A, the distal end portion 101a of the hose and the distal end portion of the sleeve 5A are inserted into the expanding groove 3 and set. Next, cap nut 1
When the inner screw 10a of 0A is screwed into the nut screw 1c of the nipple 1A and tightened, the pushing portion 10b formed on the inner surface of the cap nut 10A pushes the cylindrical portion 5d formed on the sleeve 5A in the inner diameter direction to advance (left). Direction), and furthermore, the flat cylindrical portion 5d of the sleeve 5A is pressed and reduced in the inner diameter direction by the parallel portion 10d formed at the center of the inner surface of the cap nut 10A, so that the entire sleeve 5A is reduced in the inner diameter direction. In addition, it can be widely adhered to the outer surface of the hose 101 to prevent detachment and leakage.

Since the spiral uneven portion 10c is formed on the right side of the cap nut 10A, the contact area with the sleeve 5A is small, and the frictional force between the spiral uneven portion 10c and the sleeve 5A due to the rotation of the cap nut 10A is small. Very small,
Since the spiral uneven portion 10c has a screw shape, the sleeve 5
When the cap nut 10A is turned even after riding on the cap A, the cap nut 10A also acts to advance, and the cap nut 1
0A can be tightened, and the sleeve 5A can be reduced in the radial direction to prevent leakage.

When the cap nut 10A is tightened, the front end portion 101a of the hose is expanded by the lower tapered portion 3b of the expansion groove 3 so as to exhibit a sealing property and prevent removal. Can be. Further, the inner periphery of the hose 101 is brought into close contact with the peripheral protrusion 5a formed on the sleeve 5A, so that leakage can be more reliably prevented. As described above, by forming the spiral uneven portion 10c on the cap nut 10A, the rotational torque of the cap nut 10A is reduced, so that the cap nut 10A can be easily tightened, and
The detachment and leakage of the hose 101 can be prevented.

(Second Embodiment) This embodiment is different from the first embodiment in that the sleeve 5B and the cap nut 1
The nipple 1A is the same except for 0C. A description will be given with reference to FIG. 3 (A) showing a front cross section of the connected state of the connector, FIG. 3 (B) showing a front cross section of the sleeve 5B, and FIG. 3 (C) showing a front cross section of the cap nut 10C. The same reference numerals are given to portions having the same operation as in the first embodiment, and the description is omitted.

The nipple 1 is provided on the outer surface of the sleeve 5B.
A projection 5b is formed on the right side 1d of A, and on the right side thereof, unlike the sleeve 5A shown in FIG. 1B, a spiral uneven portion of a spiral groove formed on a cap nut 10C described later. The pressed portion 5e corresponding to 10e is formed flat and inclined downward to the right. Further, on the inner surface of the sleeve 5B, in order to make it easier to bite (closely adhere) to the outer surface of the hose 101, there is formed a circumferential protrusion 5a whose pitch is rough and the angle thereof is desirably 80 ° or more. If the mountain-shaped pitch is small, it does not bite into the hose 101, so the pitch is formed to be a rough pitch that can bite. Also, cap nut 10
On the left inner surface of C, there is formed an internal screw 10a to be screwed with the nut screw 1c formed on the nipple 1A, and on the right inner surface, the sleeve 5B is advanced (leftward) while being pressed in the inner diameter direction. The helical uneven portion 10e of the helical groove which functions is formed in an inclined shape corresponding to the flat inclined pressed portion 5e formed on the outer surface of the sleeve 5B.

Then, the sleeve 5B and the cap nut 10
As in the first embodiment, the sealing property of the hose 101 and prevention of detachment can be achieved by C. When the cap nut 10C is loosened and the hose 101 is removed, and the sleeve 5B fitted to the hose 101 is removed, the flat grooved pressing portion 5e formed on the sleeve 5B and the spiral groove are formed on the inner surface of the cap nut 10C. The spiral concave / convex portion 10e can be easily removed.

(Third Embodiment) The present embodiment relates to a hose connector provided with a mechanism for preventing the sleeve 5C from rotating around, and will be described with reference to FIGS. FIG.
4A is a front sectional view of the nipple, FIG. 4B is a right side view of the nipple, FIG. 4C is a front sectional view of the sleeve, FIG.
4D is a left side view of the sleeve, FIG. 4E is a partial perspective view of the sleeve, FIG. 4F is a front sectional view of the cap nut, FIG.
Is an enlarged view of the O-ring groove formed on the outer periphery of the hose insertion cylinder,
FIG. 6A is a front sectional view of the connector in a connected state, and FIG.
FIG. 7B is a front cross-sectional view of a connected state of connectors using differently shaped sleeves, and FIG. 7 is a view of various sleeves. In the first and second embodiments, parts having the same functions are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIGS. 4A and 5, an O-ring to which a leak-preventing O-ring 50 can be attached is provided on the outer periphery of the hose insertion cylinder 2 of the cylindrical nipple 1 B made of metal or the like. Groove 5
0a is formed. As shown in FIG. 5, the detailed shape of the O-ring groove 50a is such that the O-ring groove 50a is formed so as to be inclined from the hose insertion side (right side) to the rear side (left side). Then, O-ring 5
0 is inserted into the O-ring groove 50a and does not come off the O-ring groove 50a. The inclination angle of the O-ring groove 50a is an angle at which the O-ring 50 does not come off even when a hose is inserted, and is selected in consideration of the amount of protrusion of the O-ring 50.

As shown in FIGS. 4A and 4B, a nut screw 1c for fixing a cap nut 10B, which will be described later, is formed on the right side of the rotating head 1a, and a sleeve 5C is formed.
There are four semi-elliptical concave portions 52 which can be fitted with the protrusions 55 formed in the circumferential direction. The number of the concave portions 52 is arbitrary. As shown in FIGS. 4C to 4E, the sleeve 5 </ b> C has a cut portion 2 formed by cutting a part of the circumference in the direction of the center of the circle.
2 and the nipple 1B
A protruding portion 55 that can be fitted to the concave portion 52 is formed on the right outer peripheral surface thereof. An inclined pressed portion 5e is formed. The circumferential projections 5a are formed with rough irregularities having a coarse pitch that can bite into the hose 101.

As shown in FIG. 4 (F), the cap nut 10B has an inner screw 10a which is screwed to a nut screw 1c formed on the nipple 1B, and has a right inner peripheral portion. A step 65 is formed, and a locking claw 63 for rotatably (loosely) fixing a sleeve presser 60A to be inserted therein to enable the sleeve 5C to be easily tightened is provided on the outer periphery of the right end. Is formed. The inner surface 60a of the sleeve retainer 60A is formed on the outer surface of the sleeve 5C so as to correspond to the pressed portion 5e formed flat and inclined, and the outer surface has the step formed on the cap nut 10B. A step 65 a capable of coping with the engaging portion 65 is formed, and a concave portion 67 capable of receiving the locking claw 63 is formed. Therefore, the sleeve retainer 60A is attached to the cap nut 10B.
When inserted into the cap, the force generated in the discharging direction by the locking claw 63 through the concave portion 67 is stopped by the steps 65 and 65a, and the sleeve presser 60A is rotatably integrated with the cap nut 10B. Be attached.

Next, the process of attaching the hose 101 using the nipple 1B, the sleeve 5C, the sleeve presser 60A and the cap nut 10B having the above-described configuration will be described.
First, the hose 101 is attached with the cap nut 10B and the sleeve retainer 60A integrated, and the sleeve 5C is attached. Then, after inserting the hose 101 into the hose insertion cylinder 2 of the nipple 1B, the protrusion 55 of the sleeve 5C is fitted into the concave portion 52 formed in the nipple 1B, the sleeve 5C is attached, and the cap nut 10B is turned. tighten.

At this time, since the projection 55 formed on the sleeve 5C and the recess 52 formed on the nipple 1B are in a fitted state,
The rotation of the sleeve 5C is prevented (so-called co-rotation is prevented), and the O-ring 50, the sleeve 5C, and the like can be firmly tightened via the sleeve pressing body 60A, and the hose 101 can be prevented from coming off and preventing leakage. (Fig. 6
(A)). On the other hand, loosen the cap nut 10B and
When removing the sleeve nut 5C, the sleeve presser body 60A fitted with the sleeve 5C moves rightward with the cap nut 10B by loosening the cap nut 10B, and separates from the sleeve 5C. The sleeve 5C can be removed, and the connector can be reused.

It should be noted that, unlike the shapes of the sleeve 5C and the nipple 1B, the concave portion 52 is
The protrusion 55 may be formed on B. Further, as shown in FIG. 6 (B), even if the shape of the outer surface of the sleeve 5C ′ and the shape of the inner surface 60a of the sleeve presser 60B are both formed horizontally,
This is effective for preventing the sleeve 5C 'from rotating around. The sleeves 5C and 5C 'are, as shown in FIG.
A part of the circumference is formed to be openable by a cut portion 22 cut in the center direction of the circle, and its cross-sectional shape is a shape as shown in FIG. 1 (B-1 to B-3). . In addition, the cut shapes in the longitudinal direction of the sleeves 5C and 5C 'include:
As shown in FIGS. 7 (A) to 7 (E), horizontal 22D (FIG. A), inclined 22E (FIG. B), angular irregularities are formed on the way 22F (FIG. C), and round irregularities are shown on the way. 22G (FIG. D), waveform 22H (FIG. E), etc.
01 can be easily attached and the tightening force in the inner diameter direction of the hose 101 can be increased. Therefore, the shape is appropriately selected in consideration of the purpose of use.

(Fourth Embodiment) The sleeve 5D and the cap nut 10B in this embodiment will be described with reference to FIGS. 8A and 8B.
5C is different from the sleeve 5C in that irregularities 68 are formed on the right outer peripheral surface. The nipple 1B, the cap nut 10B, and the sleeve retainer 60A are the same as those in the third embodiment (FIGS. 4A and 4F), and a description thereof will be omitted.
When the hose 101 is mounted using the components having the above configuration, the state shown in FIG. 9A is obtained, and the contact area is small when the cap nut 10B is tightened due to the unevenness 68 formed on the outer peripheral surface of the sleeve 5D. Can be assembled with a small tightening force.

The sleeve 5E shown in FIG. 8 (C) has the irregularities 68 formed on the right outer peripheral surface, but does not have the projection 55, and the right side of the nipple 1B shown in FIG. 1 (B). A protrusion 5b that can be brought into contact with 1d is formed. Therefore, when the hose 101 is connected using this sleeve 5E,
The state shown in FIG. That is, the protrusion 5b formed on the sleeve 5E is fixed in a state of being in contact with the right side portion 1d of the nipple 1B. Since the sleeve 5E has a small contact area when tightening the cap nut 10B due to the unevenness 68 formed on the outer peripheral surface, the sleeve 5E can be assembled with a small tightening force, so that the rotational force of the sleeve 5E is reduced, and the co-rotation of the sleeve is reduced. Could be prevented.

(Fifth Embodiment) The present embodiment relates to a structure of a cap nut and a sleeve retainer for facilitating removal of a sleeve in close contact with a hose. The conventional cap nut 301, sleeve 302, and sleeve presser 30
The structure of No. 3 will be described with reference to FIGS. 11 (A) and 11 (B). Irregularities 302a are formed on the inner peripheral surface of the sleeve 302, are inserted through the hose 101, and the outer peripheral surface is an example slope 302b. Is formed. Also, the sleeve presser 30
3 has an inner peripheral surface formed into a shape that can be fitted to the outer peripheral surface of the sleeve 302, while a step 303a is formed on the outer peripheral surface. A step is formed on the inner peripheral surface of the cap nut 301 so as to be fittable to the outer periphery of the sleeve pressing body 303.

When the cap nut 301 is tightened,
The sleeve 302 is in close contact with the outer periphery of the hose 101 via the sleeve pressing body 303, so that the sleeve 302 can be prevented from coming off and from leaking (FIG. 11A). On the other hand, when the cap nut 301 is loosened, the sleeve presser 303 remains in close contact with the sleeve 302 as shown in FIG.
2 becomes difficult to remove.

Therefore, cap nuts 301A and 301B and a sleeve pressing body 303 different from the structure shown in FIG.
A and 303B are shown in FIGS.
The components other than the cap nut and the sleeve presser shown in FIGS. 12 and 13 are substantially the same as those shown in FIG. On the inner peripheral surface of the cap nut 301A shown in FIG.
Is formed. On the other hand, a concave portion 303a and a convex portion 303b that can be fitted to the convex portion 301a and the concave portion 301b are formed on the outer peripheral surface of the sleeve pressing body 303A. Therefore, the cap nut 301A and the sleeve presser 303A can be moved integrally, and when the cap nut 301A is loosened, the sleeve presser 303A is inserted into the cap nut 301A, and the sleeve 302 is connected to the hose 101.
It can be easily removed from. Note that a convex portion 301a and a concave portion 301b formed on the outer peripheral surface of the sleeve pressing body 303A.
May be either one.

The structure shown in FIG. 13A has a stepped portion 2 on the outer peripheral surface of the sleeve pressing body 303B.
05d and the recess 205e are formed, while the cap nut 3
A convex portion 210d that can be fitted into the step portion 205d is formed on the inner peripheral surface of the concave portion 205e.
And a triangular spire 210e that can be inserted into the right side (outside) of the recess 205e. for that reason,
The sleeve presser 303B is integrated with the cap nut 301B. When the cap nut 301B is tightened, the sleeve presser 303B moves and the inner peripheral surface of the sleeve 302 is tightly connected to the hose 101 to seal (prevent leakage). On the other hand, when the cap nut 301B is loosened, the sleeve presser 30
3B is inserted into the cap nut 301B, and the sleeve 302 can be easily removed from the hose 101.

Next, an example in which the cap nut 301B and the sleeve presser 303B in the fifth embodiment are applied to a seal connector 220 for sealing a cable will be described with reference to FIG. Seal connector 220
Is composed of a nipple 201, a sealing member 202, a loose ring 205, and a cap nut 210.
14 (A) showing a cross-sectional view and a front view of a state in which the cable 40 is inserted into the seal connector 220, and FIG. 14 (B) showing a cross-sectional view and a front view of a state where the cable 240 is tightened by the seal connector 220. explain.

A rotating head 201a for a spanner is formed almost at the center of a cylindrical nipple 201 made of a synthetic resin, metal, or the like. While the device screw 201b is formed, a nut screw 201c for a cap nut is formed on the outer surface on the right side. Also, on the outer periphery on the right side of the rotating head 201a, a mountain-shaped projection 201e for preventing loosening of a cap nut 210 described later.
Are formed at four places, and can be fitted to the fitting unevenness 210c formed on the cap nut 210. The rotating head 2
01a, a tapered pressing portion 201d
Is formed, and a seal member 202 described later can be inserted. An O-ring 214 for sealing is mounted on the left side of the rotating head 201a. When the O-ring 214 is fixed to a side plate (not shown) of the device via a nut (not shown), a sealing (leakage prevention) action is provided. I do.

The seal member 202 is an elastic body made of a synthetic resin, rubber, or the like in a cylindrical shape. The seal member 202 has an inner diameter through which the cable 240 can be inserted. One recess 202b is formed in the center of the outer surface of the member 202, and
On both sides of 02b, convex portions 202c, 202c are formed in an annular shape. The convex portion 202c is formed so as to protrude from the outer surface of the seal member 202, and the concave portion 202b is formed to have substantially the same diameter as the outer surface of the seal member 202. In addition, the shapes of the convex portions 202c, 202c can be appropriately selected and need not necessarily be the same.

A loose ring 205 having an inner diameter through which a cable 240 can be inserted is mounted on the right side of the seal member 202. A convex portion 210h formed on a cap nut 210 described later is provided on the right outer surface of the loose ring 205. Is formed with a concave groove 205h that can be fitted therein, and a tapered pressing portion 2 that presses the seal member 202 in the inner diameter direction on the left inner surface.
05b is formed.

Also, a cap nut 2 made of synthetic resin, metal or the like is used.
An inner screw 210a screwed to a nut screw 201c formed on the nipple 201 is formed on the left inner surface of the nipple 201, and a convex portion 210h which can be fitted into a concave groove 205h formed on the loose ring 205 on the right. Is formed in an annular shape. Therefore, the loose ring 205 is configured to move integrally with the cap nut 210. Also, cap nut 21
On the inner periphery on the left side of 0, a saw-tooth-shaped fitting unevenness 210c that fits on the outer periphery of the protrusion 201e formed on the nipple 201 is formed in an annular shape.

Further, the protrusion 201e is connected to the cap nut 210.
Alternatively, the fitting unevenness 210c may be formed on the nipple 201, and the shapes of the protrusion 201e and the fitting unevenness 210c may be other shapes, that is, the fitting and the cap nut 21
Any shape may be used as long as the shape prevents zero loosening. Also, protrusion 201
e (nipple 201) and fitting unevenness 210c (cap nut 2)
As for the material of 10), at least one of them is made of a synthetic resin having an elastic action so as to be fittable.

Next, the use of the seal connector 220 having the above configuration will be described. Cable 240 such as synthetic resin
When the cap nut 210 is tightened, as shown in FIG. 14B, the loose ring 205 moves integrally by the concave groove 205h and the convex part 210h, and the sealing member 2
Both outer peripheral end faces of 02 are reduced in the inner diameter direction and closely adhered to the cable 240 by a tapered pressing portion 201d formed on the inner surface of the nipple 201 and a tapered pressing portion 205b formed on the loose ring 205. Further, when the cap nut 210 is tightened and the loose ring 205 is moved, the concave portion 202b formed on the outer periphery of the seal member 202 is crushed, and the central portion 202g and both end portions 202h corresponding to the concave portion 202b bulge in the inner diameter direction. And tightly bonded to the cable 240 to seal (prevent leakage).

That is, even if the seal member 202 is crushed by the concave portion 202b formed on the outer surface of the seal member 202 and the convex portions 202c formed on both sides thereof, even if the seal member 202 is crushed.
When the inner surface of 2 is in close contact with the outer periphery of the cable 240, 3
Since they are dispersed and swelled in the inner diameter direction and are tightly joined, the bite into the cable 240 is small, and since the cable 240 is pressed at three places, it is possible to prevent the cable 240 from being pulled out and to improve the sealing performance. . Further, when the cap nut 210 is loosened, the loose ring 205 can be removed integrally with the cap nut 210 by the concave groove 205h and the convex part 210h, so that only the seal member 202 can be removed alone.

The inner screw 2 formed on the cap nut 210
The number of threads of 10a is such that the cap nut 210 is
1 is selected so that it can be tightly bonded to the cable 240 via the seal member 202 when it is tightened until it comes into contact with the cable 1. Thus, overtightening of the cap nut 210 can be prevented, and the amount of tightening can be easily managed. Also, the fitting unevenness 210c is fitted to the outer periphery of the projection 201e, so that the cap nut 21 is formed.
Zero rotation is prevented to prevent loosening.

Next, FIGS. 15A and 15B show FIG.
The structure of the cap nut 210 and the loose ring 205 shown in FIG. The structure shown in FIG.
On the outer peripheral surface of the loose ring 205, a step portion 205d and a concave portion 205e are formed outward, while on the inner peripheral surface of the cap nut 210, a convex portion 210d that can be fitted to the step portion 205d is formed. And the recess 205
e, a triangular spire 210e that can be closely attached to the right side (outside) of the recess 205e is formed.

In the structure shown in FIG. 15B, the outer circumferential surface of the loose ring 205
g and a triangular spire 2 that can be inserted into a recess 210f described below and that can be in close contact with the left side (inside) of the recess 210f.
On the other hand, on the inner peripheral surface of the cap nut 210, a convex portion 210g that can be fitted into the concave portion 205g is formed, and a concave portion 210f that allows the spire body 205f to be inserted is formed on the inner peripheral surface of the cap nut 210. is there.

As shown in FIGS. 15A and 15B,
When the cap nut 210 and the loose ring 205 are formed, and the cap nut 210 is tightened, the loose ring 205 is pressed in the inner diameter direction while moving and closely adheres to the cable 240, and the concave portion 202 formed on the outer periphery of the seal member 202.
b is crushed and the central portion 202g corresponding to the concave portion 202b
And both ends 202h bulge in the radial direction, and the cable 24
0 to seal (prevent leakage). When the cap nut 210 is loosened, the loose ring 205 becomes
Since the seal member 202 can be removed integrally with the seal member 10, only the seal member 202 can be removed alone. The positions of the concave portion 205e and the spire body 210e, and the positions of the concave portion 210f and the spire body 205f may be reversed left and right, and their shapes can be appropriately selected as long as the effects are satisfied, and can be applied to other hoses and the like of cables. . Further, by forming the cap nut and the sleeve retainer, and the cap nut and the loose ring integrally and movably, the sleeve or the seal member can be easily removed. , The number of spires, the number of steps, and the like can be appropriately selected.

The connector of the present invention is applicable to various fields, and the nipple, sleeve, cap nut, sleeve retainer, loose ring, etc. are not limited to the above-mentioned shapes, and materials such as hoses and cables are used. Needless to say, the shapes of the nipples, sleeves, cap nuts, loose rings, and the like described above can be partially adopted, and the component shapes can be appropriately combined, depending on the purpose of use, and the intended use. .

[0055]

According to the first aspect of the present invention, the connector is assembled by forming an inclined pressed portion formed on the sleeve and an inclined spiral uneven portion on the cap nut corresponding to the pressed portion. In this case, the tightening force is small, the assembling can be easily performed, and the sleeve inserted into the attached hose can be easily removed. The connector according to claim 2 has a small contact area when the cap nut is tightened due to the unevenness formed on the outer peripheral surface of the sleeve, so that the connector can be assembled with a small tightening force. Further, in the connector according to the third aspect, the sleeve does not rotate even when the cap nut is turned by the concave portion and the protrusion formed in the nipple and the sleeve, so-called co-rotation can be prevented, and the connector can be firmly tightened. In the connector according to the fourth aspect, since the peripheral projection is formed on the inner surface of the sleeve, the inner surface of the sleeve and the outer surface of the hose are brought into more close contact with each other. Increase can be achieved. In the connector according to the fifth aspect, an O-ring groove that is inclined from the hose insertion side toward the rear side is formed on the outer periphery of the hose insertion cylindrical body of the nipple. Separation from the groove can be prevented. The connector according to claims 6 to 9,
When the cap nut is loosened, the sleeve retainer (or loose ring) can be removed together with the cap nut, so that the sleeve (or sealing member) can be easily removed from the hose (or cable).

[Brief description of the drawings]

FIG. 1A is a front sectional view of a nipple, FIG. 1B is a front sectional view of a sleeve, and FIGS. 1B to 1B are A to A cross sections in the first embodiment. Figures, (B-4) and (B-5) are views taken along arrows BB, and (C) is a front sectional view of the cap nut.

FIGS. 2A, 2B, and 2C are diagrams showing a connecting process by a connector.

FIGS. 3A and 3B are front sectional views of a connector in a connected state, FIG. 3B is a front sectional view of a sleeve, and FIG. 3C is a front sectional view of a cap nut in the second embodiment.

4A is a front sectional view of a nipple, FIG. 4B is a right side view of the nipple, FIG. 4C is a front sectional view of a sleeve, and FIG. Left side view,
(E) is a partial perspective view of the sleeve, (F) is a front sectional view of the cap nut.

FIG. 5 is an enlarged view of an O-ring groove formed on the outer periphery of the hose insertion cylinder.

FIG. 6A is a front cross-sectional view of a connected state of a connector,
(B) is a front sectional view of a connected state of connectors using different sleeves.

FIGS. 7A to 7E are views showing various forms of sleeves.

8A is a front sectional view of a sleeve, FIG. 8B is a front sectional view of a cap nut, and FIG.
FIG. 7 is a front sectional view of another sleeve.

FIG. 9A is a front cross-sectional view of the connector in a connected state,
(B) is a front sectional view of a connected state of connectors using different sleeves.

FIG. 10 is a front cross-sectional view showing a state of connection by a conventional connector.

FIG. 11A is a front sectional view of a conventional connector,
(B) is a front sectional view when a cap nut is removed.

FIG. 12A is a front sectional view in a fifth embodiment, and FIG. 12B is a front sectional view when a cap nut is removed.

13A is a front sectional view of another structure, and FIG. 13B is a front sectional view when a cap nut is removed.

14A is a cross-sectional view and a front view of a state where a cable is inserted into a seal connector, and FIG. 14B is a cross-sectional view and a front view of a state where the cable is fastened by a seal connector.

15A and 15B are cross-sectional views of cap nuts and loose rings having different structures.

[Explanation of symbols]

1 (1A, 1B) Nipple 1a Rotating head 2 Hose insertion cylinder 3 Expanding groove 3a Upper taper 3b Lower taper 5 (5A, 5B, 5C, 5C ', 5D, 5E) Sleeve 5a Peripheral protrusion 5c Pressed portion 5e Pressed portion 10 (10A, 10B) Cap nut 10b Pressing portion 10c Spiral uneven portion 10e Spiral uneven portion 22 (22A, 22B, 22C) Cut portion 52 Recess 55 Projection 101 Hose

Claims (9)

[Claims] 1. A connector in which a hose is inserted into a hose insertion cylinder of a nipple and fastened with a cap nut via a sleeve, and a nut screw for a cap nut and a hose are provided on the right side of the rotating head of the nipple. A hose insertion cylinder body for inserting the nut is formed, an expanding groove is formed in a circumferential shape, and an inner peripheral screw to be screwed to the nut screw is formed on the left side of the cap nut. A connector formed on the right side of the sleeve with a spiral concave / convex portion which engages when pressing a flat inclined pressing portion formed on the outer surface of the sleeve. 2. A connector for inserting a hose into a hose insertion cylinder of a nipple and fastening with a cap nut via a sleeve, wherein a nut screw for a cap nut and a hose are provided on the right side of the rotating head of the nipple. Is formed, and an expanding groove is formed circumferentially. Irregularities are formed on the outer peripheral surface of the sleeve, and the left side of the cap nut is A connector characterized in that an inner peripheral screw to be screwed with the nut screw is formed, and a sleeve presser having a flat inclined inner surface is rotatably inserted on the right side. 3. A concave portion (or protrusion) is formed on the right side of the rotating head of the nipple, and a protrusion (or concave portion) is formed on the sleeve so as to fit into the concave portion (or protrusion). The connector according to claim 1 or 2, wherein the connector is used. 4. The connector according to claim 1, wherein a peripheral projection is formed on an inner surface of the sleeve. 5. An inclined O-ring groove is formed on the outer periphery of the hose insertion cylinder of the nipple from the hose insertion side to the rear side. Item 1. Connector. 6. A sleeve holding body (or loose ring) is moved by tightening a cap nut, and the hose (or cable or the like) is tightened via a sleeve (or a sealing member) inserted through the hose (or a cable or the like). A connector, wherein a locking claw 63 is formed at an end of the cap nut, and the locking claw 6 is formed on a sleeve pressing body (or loose ring).
3. A connector characterized in that a recess 67 capable of receiving the third is formed. 7. A sleeve presser (or loose ring) is moved by tightening a cap nut, and the hose (or cable or the like) is tightened via a sleeve (or a seal member) inserted through the hose (or cable or the like). A connector, wherein a step portion 205d and a concave portion 205e are formed on an outer peripheral surface of the sleeve retainer (or loose ring), and a convex portion 210d which can be fitted to the step portion 205d is formed on an inner peripheral surface of the cap nut. And a spire 210e that can be inserted into the recess 205e. 8. A sleeve presser (or a loose ring) is moved by tightening a cap nut, and the hose (or a cable or the like) is tightened via a sleeve (or a seal member) inserted through the hose (or a cable or the like). A connector, wherein a concave portion 205g and a spire body 205f are formed on an outer peripheral surface of the sleeve retainer (or loose ring), and a convex portion 210g that can be fitted to the concave portion 205g is formed on an inner peripheral surface of the cap nut. And a recess 210f that can be inserted into the spire body 205f. 9. A sleeve presser (or a loose ring) is moved by tightening a cap nut, and the hose (or a cable or the like) is tightened via a sleeve (or a seal member) inserted through the hose (or a cable or the like). A connector, wherein a convex portion 210h is formed on an inner peripheral surface of the cap nut, and a concave groove 205h capable of locking the convex portion 210h is formed on an outer peripheral surface of the sleeve retainer (or loose ring). Features connector.