JP2014145440A - Hose joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hose joint capable of sufficiently energizing a slide ring for retaining a concatenated state at low cost.SOLUTION: The hose joint comprises: a connector body which is substantially formed cylindrical while including a receptacle to receive a nipple of a device-side member and in which a claw opening is formed on a circumferential surface; a stopper member which is fitted to an outer circumference of the connector body and includes a stopper claw part elastically deformable in a radial direction and protruding from the claw opening into the connector body; a substantially cylindrical slide ring mounted to the outer circumference of the connector body so as to be slidable axially; and an energizing member for axially energizing the slide ring to a concatenation position. The energizing member is a resin spring including a slide ring side end portion abutted to a side of the slide ring; a body side end portion abutted to a side of the connector body, and a spring portion which is formed to be tensioned between the slide ring side end portion and the body side end portion.

Description

  The present invention relates to a hose joint that connects a hose and another device to allow fluid to pass, and particularly relates to a hose joint that can connect and remove the hose and another device with a simple one-touch operation.

The hose joint has a hose connected at one end and another male joint member, a water tap (see FIG. 9A), a watering nozzle (see FIG. 9B), a hose reel (see FIG. 9) at the other end. c) and other devices (hereinafter simply referred to as “other devices”) that supply liquid or receive liquid supply, such as a hollow It is an instrument.
Devices used for watering, such as these watering nozzles and hose reels, are hereinafter referred to as “watering devices”.

Patent Document 1 describes a hose joint that removably connects a hose side member connected to a hose and a device side member connected to another device.
The apparatus-side member has a nipple inserted into the hose-side member from above, while the hose-side member is formed in a substantially cylindrical shape having a receiving port for receiving the nipple, and has a connector main body having a claw opening on the peripheral surface. , A member that fits on the outer periphery of the connector body and is elastically deformable in the radial direction and has a retaining member that protrudes into the connector body from the claw opening, and can slide in the axial direction on the outer periphery of the connector body And a coil spring for urging the slide ring in the axial direction to a predetermined coupling position.

When the slide ring is held in the coupling position by the coil spring, if the nipple is inserted into the receiving port, the nipple enters along the inclined surface of the retaining tab, and the retaining tab prevents the nipple from coming off after entering. Thereby, the hose side member and the apparatus side member are connected. At this time, since the slide ring prevents elastic deformation in the radial direction of the retaining claw portion, the nipple does not come off.
When the slide ring is slid to the release position against the coil spring, a space is formed between the inner peripheral surface of the slide ring and the retaining claw, and the retaining claw is elastically deformed in the radial direction to extract the nipple. Can do.

In conventional hose joints, the movable range of the slide ring is narrow, and the coil spring requires a strong repulsive force with a small amount of compression. Therefore, a metal such as SUS (stainless steel) is used as the material to bias the slide ring. However, the material cost was high.
Patent Document 1 also describes the use of a resin coil spring, but the resin coil spring could not be molded unless a dedicated jig or machine was used.
In addition, when using coil springs that are made of highly versatile resin such as PP (polypropylene) or POM (polyacetal), the repulsive force is insufficient, plastic deformation due to repeated use, and aging Due to the change, the repulsive force is reduced, and the slide ring cannot be sufficiently biased to the connection position, and the connection of the hose joint may be released alone.

  If the repulsive force is increased by reducing the number of turns with a resin coil spring, the moldability of the coil spring becomes unstable, resulting in poor molding or ease of assembly. If the number of turns is 3 or more in order to stabilize the formability of the coil spring, the repulsive force is insufficient in the hose joint with a small amount of compression as described above.

Japanese Patent No. 3450789

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a hose joint that can sufficiently urge the slide ring to maintain the connected state at low cost.

In the present invention, means for solving the above problems are as follows.
1st invention is the hose coupling which connects the hose side member connected to a hose, and the apparatus side member connected to another apparatus so that attachment or detachment is possible, The said apparatus side member is inserted in the said hose side member from upper direction The hose side member is formed in a substantially cylindrical shape having a receiving port for receiving the nipple and has a claw opening formed on a peripheral surface thereof, and is fitted to the outer periphery of the connector main body. A retaining member that is elastically deformable in the radial direction and has a retaining tab that protrudes into the connector body from the claw opening; and a substantially cylindrical shape that is slidably attached to the outer periphery of the connector body in the axial direction. A slide ring, and a biasing member that biases the slide ring in the axial direction toward the connection position. When the pull is inserted into the receptacle, the slide ring prevents elastic deformation of the retaining claw portion, and the retaining claw portion prevents the nipple from coming off, and the slide ring is brought into a release position against the biasing member. When sliding, the retaining tab is elastically deformed in the radial direction to extract the nipple, and the urging member is brought into contact with the slide ring side end contacting the slide ring and the connector body. It is a resin-made resin spring which has a main body side end part which touches, and the shape of a spring part stretched between the slide ring side end part and the main body side end part.

  According to a second aspect of the present invention, the spring portion is formed in a zigzag shape stretched between the slide ring side end portion and the main body side end portion.

  According to a third aspect of the present invention, the folded portion of the zigzag spring portion is formed into a shape including a circular shape having a radius equal to or larger than the width of the linear portion of the spring portion.

  According to a fourth aspect of the present invention, there is formed a tongue-like slide claw portion that protrudes inward from the inner peripheral surface of the slide ring and is elastically deformable in the radial direction, and the slide claw portion contacts the outer peripheral surface of the connector body. A guide surface that is slidable in the axial direction while being elastically deformed is formed.

  According to a fifth aspect of the present invention, the guide surface has a portion in which the slide claw portion is located relatively inward in the radial direction at the connection position, and a side where the slide claw portion abuts at the release position. It has a gradient that gradually protrudes radially outward.

  A watering device according to a sixth aspect of the present invention includes any one of the hose joints from the first aspect to the fifth aspect.

  According to the first invention, the biasing member includes a slide ring side end that contacts the slide ring side, a main body side end that contacts the connector main body side, the slide ring side end, and the main body. By being a resin-made resin spring having a spring portion of a shape stretched between the side end portions, it is possible to obtain an urging member having a strong repulsive force and a low material cost.

  According to the second invention, the spring portion is formed in a zigzag shape stretched between the slide ring side end portion and the main body side end portion, thereby improving the repulsive force of the resin spring. Can do.

  According to the third invention, the folded portion of the zigzag spring portion is formed into a shape including a circular shape having a radius equal to or larger than the width of the linear portion of the spring portion, whereby the repulsive force of the spring portion. And strength can be improved.

  According to the fourth invention, a tongue-like slide claw portion that protrudes inward from the inner peripheral surface of the slide ring and is elastically deformable in the radial direction is formed, and the slide claw portion is formed on the outer peripheral surface of the connector body. By forming a guide surface that can slide in the axial direction while abutting and elastically deforming, by changing the gradient of the guide surface, the direction in which the slide ring is urged is changed by elastic deformation of the slide claw, The load necessary for the operation of the slide ring can be adjusted.

  According to a fifth aspect of the present invention, the guide surface has a portion in which the slide claw portion is positioned relatively inward in the radial direction at the connection position, and a portion with which the slide claw portion abuts at the release position. By having a gradient that gradually protrudes radially outward toward the side, the slide ring can be biased to the connection position by elastic deformation of the slide claw portion in the vicinity of the connection position where the deformation amount of the resin spring is small and the repulsive force is weak. .

  According to the sixth invention, by providing any one of the hose joints from the first invention to the fifth invention, it is possible to inexpensively manufacture the watering device including the hose joint having an appropriate operation load. it can.

It is a disassembled front view of the hose coupling which concerns on 1st embodiment of this invention. It is sectional drawing of the hose coupling. It is a figure which shows the connector main body of the hose coupling, (a) is a perspective view, (b) is sectional drawing. It is a figure which shows the securing member of the hose coupling, (a) is a perspective view, (b) is a top view. It is a figure which shows the slide ring of the hose coupling, (a) is a perspective view, (b) is sectional drawing. It is a figure which shows the connector main body of the hose coupling, (a) is a perspective view, (b) is explanatory drawing of a spring part. It is sectional drawing which shows the slide claw part of the hose coupling of the hose coupling, (a) is a connection position, (b) is in the middle of a slide, (c) shows a release position, (d) is an enlarged view of (a). Is shown. (A)-(c) is sectional drawing which shows the slide claw part of the hose coupling which concerns on other embodiment of this invention, respectively. It is a figure which shows the usage example of the hose coupling which concerns on embodiment of this invention, (a) shows a faucet-hose coupling, (b) shows a watering nozzle-hose coupling, (c) shows a watering nozzle-hose reel joint. Yes.

Hereinafter, the hose coupling according to the present invention will be described.
The hose joint 1 is an instrument that connects a hose and another device to allow fluid to pass through. The hose joint 1 connects a hose and a faucet as shown in FIG. 9A, as shown in FIG. 9B. There are a wide variety of things such as those provided on the watering nozzle 40 and connected to the hose, and those connecting the hose H of the hose reel 41 and the watering nozzle 40 as shown in FIG.

Below, as 1st embodiment of this invention, the hose coupling 1 which connects a hose and a faucet like Fig.9 (a) is demonstrated.
As shown in FIG. 2, the hose joint 1 includes a hose side member 2 connected to the hose and an apparatus side member 3 connected to the faucet, and both can be detachably connected.

As shown in FIGS. 1 and 2, a faucet attachment portion 4 attached to the faucet is provided on the upper part of the apparatus-side member 3. By inserting a water faucet into the faucet mounting portion 4 and tightening with screws from a plurality of screw holes 4a on the peripheral surface of the device side member, the device side member 3 can be fixed to the faucet.
A nipple 5 to be inserted into the hose side member 2 from above is formed at the lower part of the apparatus side member 3. The nipple 5 is formed with a retaining groove 6 in which a retaining claw portion 18 of a retaining member 15 to be described later is disposed, and a locking protrusion 7 that is locked to the retaining claw portion 18 to prevent the retaining member 18 from coming off. A rubber seal ring 8 for preventing water leakage is fitted at the lower position.
Inside the apparatus side member 3, a flow path through which water can pass from the faucet mounting portion 4 to the nipple 5 is formed.

As shown in FIG. 1, the hose side member 2 includes a connector body 9 formed in a substantially cylindrical shape having a receiving port 10 for receiving the nipple 5, a retaining member 15 fitted to the outer periphery of the connector body 9, a connector A substantially cylindrical slide ring 19 attached to the outer periphery of the main body 9 so as to be slidable in the axial direction (vertical direction), and disposed between the slide ring 19 and the connector main body 9, the slide ring 19 is attached to the upper side in the axial direction. A resin spring 23 as a biasing member to be biased, a hose connection pipe 32 attached to the connector main body 9 from below and connecting a hose to the lower part, and a hose holding ring 33 for pressing the hose covered on the hose connection pipe 32 from the outer periphery And a lock nut 34 that is screwed to the hose connection pipe 32 and can tighten the hose holding ring 33.
A flow path through which water can pass is formed inside the connector body 9 and the hose connection pipe 32.

When the hose holding ring 33 and the lock nut 34 are arranged in advance on the outer periphery of the hose, the hose is put on the lower part of the hose connection pipe 32, and the lock nut 34 is screwed to the hose connection pipe 32 from below, the thin part of the lower part of the lock nut 34 is thin. The portion tightens the hose holding ring 33 and is pressed by the hose holding ring 33 so that the hose is not detached (FIG. 2).
When the screw connection between the lock nut 34 and the hose connection pipe 32 is loosened, the hose holding ring 33 is tightened by the lock nut 34 and the hose can be removed from the hose connection pipe 32.

As shown in FIG. 3, the connector main body 9 is formed in a cylindrical shape having a large-diameter receiving port 10 that can receive the nipple 5 of the apparatus-side member 2.
An annular groove portion 11 into which the retaining member 15 is fitted is formed at the upper peripheral surface of the connector main body 9, and a claw opening 12 for allowing the retaining claw portion 18 of the retaining member 15 to protrude into the connector main body 9 thereon. Are formed at four locations on the circumference.
A soft rubber packing 13 that contacts the nipple 5 and prevents water leakage is disposed on the inner peripheral surface of the connector body 9 (FIG. 2).
Further, a spring pedestal 14 is protruded radially outward in order to bring the resin spring 23 into contact with the lower peripheral surface of the connector main body 9.
The connector body 9 is made of ABS (acrylonitrile, butadiene, styrene copolymer) resin.

As shown in FIG. 4, the retaining member 15 is integrally formed from an elastic resin, and has a C-shaped annular base portion 16 in plan view, and an arm portion 17 erected upward from four locations on the circumference of the annular base portion 16. And a retaining claw portion 18 projecting obliquely downward and inward from the arm portion 17.
Since the annular base portion 16 of the retaining member 15 is formed in a C shape, the annular base portion 16 is easily elastically deformed in the radial direction, and can be expanded and fitted into the annular groove portion 11 of the connector body 9.
When the retaining member 15 is attached to the connector main body 9, the retaining claw portion 18 penetrates the claw opening 12 and protrudes into the connector main body 9 (FIG. 2). When the apparatus-side member 3 is connected in this state, the locking projection 7 of the nipple 5 enters the connector body 9 while elastically deforming the retaining claw 18 inclined downward, and the retaining claw 18 prevents the nipple 5 from being removed. Arranged in the groove 6.

As shown in FIG. 5, the slide ring 19 is formed in a substantially cylindrical shape, and is attached to the outer periphery of the connector main body 9 and the retaining member 15 so as to be slidable in the axial direction (vertical direction). On the outer peripheral surface of the slide ring 19, an uneven slope with a finger for a sliding operation is formed.
Various materials, metals, and rubbers can be used as the material of the slide ring 19, but it is preferable to use a resin that can be easily mass-produced. Among them, a thermoplastic resin that can be injection-molded and can be produced at low cost ( It is preferable to use a thermoplastic elastomer comprising a hard segment and a soft segment. Since the slide ring 19 has a thin portion, it is preferable to use a resin excellent in moldability, and it is particularly preferable to use an ABS resin because it is excellent in surface aesthetics and printability.
In the first embodiment, the slide ring 19 is made of ABS resin.

  At four positions on the inner peripheral surface of the slide ring 19, tongue-like slide claw portions 20 extend upward and inside. When the slide ring 19 is attached from above the connector body 9, the slide claw 20 enters the guide recess 27 provided on the outer periphery of the connector body 9, and the slide ring 19 cannot be removed upward. Further, a resin spring 23 abuts on the lower portion of the slide claw portion 20 to urge the slide ring 19 upward.

In addition, when the slide ring 19 is positioned on the inner peripheral surface of the slide ring 19 at a connection position that is the upper limit of the movable range, the arm portion 17 and the retaining claw portion 18 of the retaining member 15 are not elastically deformed radially outward. Thus, a deformation preventing surface 21 that is pressed from the outside is formed to protrude.
An escape recess 22 having an inner diameter larger than that of the deformation prevention surface 21 is formed above the deformation prevention surface 21. When the slide ring 19 moves downward from the coupling position to the release position, the relief recess 22 is disposed outside the retaining member 15, and the arm portion 17 and the retaining claw portion 18 are elastically deformed radially outward to form a nipple. 5 can be removed from the connector body 9.
The deformation prevention surface 21 and the escape recess 22 are formed at four locations on the circumference so as to be alternated with the slide claw 20.

As shown in FIG. 6A, the resin spring 23 is integrally formed from an elastic resin and contacts the annular upper end 24 that contacts the slide claw 20 of the slide ring 19 and the spring pedestal 14 of the connector main body 9. It consists of an annular lower end 25 in contact with the upper end 24 and a spring 26 stretched between the lower end 25.
The upper end 24 does not necessarily need to be in contact with the slide ring 19, and may be another component attached integrally to the slide ring 19.
Further, it is not always necessary for the lower end 25 to come into contact with the connector main body 9, and other parts integrally attached to the connector main body 9 may be used.

The diameters (outer diameters) of the upper end 24 and the lower end 25 are preferably set to 20 to 50 mm.
If the outer diameter is less than 20 mm, the circumference is shortened, the distance between the zigzag folded portions of the spring portion cannot be sufficiently secured, and the repulsive force as the urging member is insufficient. More preferably, it is 22 mm or more, and particularly preferably 25 mm or more.
If the outer diameter is larger than 50 mm, the hose joint 1 becomes too large and difficult to handle. More preferably, it is 40 mm or less, and particularly preferably 35 mm or less.
In 1st embodiment, the diameter (outer diameter) of the upper end part 24 and the lower end part 25 was 31.6 mm.

The material of the resin spring 23 is preferably a thermoplastic resin (including a thermoplastic elastomer composed of a hard segment and a soft segment) that can be injection molded and can be produced at low cost. Among these, POM (polyacetal), PC (polycarbonate), and PEEK (polyetheretherketone) having a large elastic modulus (repulsive force) are more preferable, and POM having a particularly large elastic modulus and low material cost is particularly preferable.
The resin spring 23 of the first embodiment employs POM.

As shown in FIG. 6B, the spring portion 26 extends in the vertical direction while being bent in a zigzag shape or a meandering shape.
As shown in FIG. 6A, four spring portions 26 are provided at equal intervals on the circumference of the resin spring 23. It is preferable to provide two or more spring portions 26 because the shape of the resin spring 23 is not stable by one, a sufficient repulsive force can be obtained, and molding can be performed by sliding in two directions due to the structure of the mold. . Increasing the number of the spring portions 26 increases the repulsive force of the resin spring 23, but the structure of the mold required for molding becomes complicated and difficult to mold. Therefore, the number is preferably 8 or less, and 6 or less. It is particularly preferable to do this. In the first embodiment, by providing four spring portions 26, the repulsive force of the resin spring 23 can be improved, and it can be molded relatively easily.

As shown in FIG. 6B, the two folded portions 26a of each spring portion 26 are formed in a shape including a circular shape having a radius equal to or larger than the width of the linear portion 26b.
The circular radius of the folded portion 26a of the spring portion 26 is 1.7 mm, and the width of the linear portion 26b is set to 1.3 mm.
Further, the connecting portion between the upper end portion 24 or the lower end portion 25 and the linear portion 26b is also formed in a circular sector shape (semicircle) having a radius (1.75 mm) greater than the width of the linear portion 26b. .
In addition, the thickness of the radial direction of the upper end part 24, the lower end part 25, and the spring part 26 is 1.3 mm. Moreover, the width | variety (height) of the upper end part 24 and the lower end part 25 is 1.0 mm.

One or more folded portions 26 a are provided for each spring portion 26. In order to obtain a sufficient repulsive force, it is preferable to provide two or more. However, if the number of folded portions 26a is increased, molding becomes difficult, mass production becomes difficult, and when the resin spring 23 is compressed, the upper and lower folded portions 26a may interfere with each other and be crimped or damaged.
For this reason, in the first embodiment, two folded portions 26 a are provided in one spring portion 23.

The height of the resin spring 23 in the free state is preferably equal to the height of the resin spring 23 when the hose side member 2 is assembled and the slide ring 19 is set to the connection position. If the height in the free state is made higher than the above height, the spring portion 26 is always subjected to a load and deforms, and the spring portion 26 may be plastically deformed to reduce the repulsive force as the biasing member. There is.
Therefore, in the first embodiment, the height of the resin spring 23 in the free state is set to 12.3 mm which is equal to the height of the resin spring 23 at the connection position.

With this resin spring 23, it is possible to compress a maximum of 4.6 mm in the axial direction from the free state, and the maximum repulsive force at that time is 17.2N.
The maximum repulsive force of the resin spring 23 is preferably 3 to 35N. If it is less than 3N, the repulsive force is insufficient, and there is a risk of malfunction that pushes down the slide ring 19 unintentionally by the user. It is more preferable to set it to 8N or more, and it is particularly preferable to set it to 12N or more.
Moreover, if it becomes larger than 35N, it will become difficult to push down for weak people, such as a woman and an elderly person. More preferably, it is 30N or less, and particularly preferably 20N or less.
Further, the maximum stress that the resin spring 23 can endure is 101.1 MPa.

As shown in FIGS. 5 and 7, the upper part of the slide claw portion 20 of the slide ring 19 has an inner surface (contact surface) inclined about 22 degrees radially inward with respect to the axial direction (vertical direction). ing.
Further, as shown in FIG. 7 (d), a guide surface 28 inclined slightly upward is extended below the guide recess 27 into which the slide claw 20 is inserted at the connection position. The guide surface 28 also has an inclination of about 22 degrees with respect to the axial direction (vertical direction).

As shown in FIGS. 7 (a) and 7 (d), the slide claw portion 20 enters the guide recess 27 at the coupling position, the slide claw portion 20 and the guide surface 28 do not contact each other, and the distance between them is 0.1 mm. A gap is formed. If the slide claw portion 20 and the guide surface 28 are in excessive contact with each other due to variations in the actual dimensions of the molded product or deviations during assembly, the clearance increases and tilts during frictional movement. It is provided as a play because there is a risk of causing trouble.
This gap is preferably set to 0.01 to 0.2 mm. If it is less than 0.01 mm, there is substantially no gap, and the slide claw portion 20 and the guide surface 28 interfere with each other, and there is a possibility that the friction ring is generated and the slide ring 19 cannot be returned to the connection position. More preferably, it is 0.05 mm or more, and particularly preferably 0.07 mm or more.
On the other hand, if it is larger than 0.2 mm, there is a possibility that the urging force cannot be obtained as described later when the slide claw portion 20 starts to be lowered from the coupling position. It is more preferably 0.15 mm or less, and particularly preferably 0.12 mm or less.
In the first embodiment, a gap of 0.1 mm is provided.
The guide surface 28 and the outer peripheral surface below the guide surface 28 bulge outward from the radially innermost portion of the tip of the slide claw 20.

When the slide ring 19 is slid downward from the coupling position, as shown in FIG. 7B, the slide claw portion 20 comes into contact with the guide surface 28, and is gradually elastically deformed radially outward along the gradient of the guide surface 28. Be made. Therefore, the elastic force that the slide claw portion 20 tries to return to the original shape works, and the reaction component received from the guide surface 28 tries to push the slide ring 19 upward to the connection position.
At a position where the slide ring 19 is pushed down by 2 mm or more from the connection position, the slide claw 20 is deformed 0.7 mm radially outward from the free state, and the elastic force acting on the contact surface at this time is 5.5 N.

It is preferable that the repulsive force generated when the slide ring 19 starts to be pushed down from the connection position is 1 to 20N. If it is less than 1N, the repulsive force is insufficient, and there is a risk of malfunction that pushes down the slide ring 19 unintentionally by the user. More preferably 3N or more, and particularly preferably 5N or more.
Moreover, if it becomes larger than 20N, it will become difficult to push down for weak people, such as a woman and an elderly person. More preferably, it should be 15N or less, and particularly preferably 10N or less.
In the first embodiment, the cooperation between the repulsive force by the resin spring 23 and the repulsive force by the slide claw portion 20 results in a repulsive force equivalent to that of a conventional coil spring made of a metal such as SUS as a less expensive resin. Can be achieved.

Further, when the slide ring 19 slides from the release position to the coupling position and the slide claw portion 20 passes through the guide surface 28, the elastic claw portion 20 elastically deforms in addition to the force of the resin spring 23 as described above. A force acts to push up the slide ring 19 to the upper connection position.
Here, since both the connector main body 9 and the slide ring 19 are molded from ABS resin, the coefficient of dynamic friction between the ABS resin material and the ABS resin material is μ = 0.4, and tan ⁻¹ 0.4 = 21.8 degrees. Become.
Therefore, in the first embodiment in which the angle of the contact surface between the slide claw portion 20 and the guide surface 28 is 22 degrees, the contact between the slide claw portion 20 and the guide surface 28 when the slide claw portion 20 slides upward. The friction force acting on the contact surface exceeds the force that pushes the slide ring 19 upward by elastic deformation of the slide claw portion 20.

Contrary to the first embodiment, a slide claw portion may be provided on the connector body 9 and a guide surface may be formed on the slide ring 19.
However, it is more preferable that the slide ring 19 is provided with the slide claw portion 20 and the guide surface 28 is formed on the connector body 9 as in the first embodiment because the slide ring 19 and the hose joint 1 can be downsized. .

In the hose joint 1 of the first embodiment, when the slide ring 19 is in the coupling position, when the nipple 5 of the apparatus side member 3 is inserted into the receiving port 10, the retaining claw portion 18 and the locking projection 7 are locked. .
At this time, the deformation preventing surface 21 of the slide ring 19 prevents the arm portion 17 and the retaining claw portion 18 from being deformed, so that the nipple 5 is prevented from coming off.

When the slide ring 19 is slid from the connection position to the lower release position, the relief recess 22 of the slide ring 19 is positioned outside the retaining claw portion 18, so that the arm portion 17 and the retaining claw portion 18 are elastically deformed to cause the nipple 5. Can be extracted.
When the slide claw portion 20 passes through the guide surface 28, in addition to the repulsive force of the resin spring 23, the slide claw portion 20 is elastically deformed radially outward to urge the slide ring 19 to the upper connection position. work.

In the hose joint 1 according to the first embodiment, the resin spring 23 as the urging member is made of POM, which is an inexpensive resin having a large elastic modulus, thereby improving the repulsive force and reducing the material cost. Can do.
Further, the resin spring 23 has a zigzag-shaped spring portion 26 stretched between the upper end portion 24 and the lower end portion 25, so that the repulsive force of the resin spring 23 is smaller than that of the spiral shape (coil shape). Can be bigger. Furthermore, it can manufacture easily by injection molding and can reduce a processing cost.

  Further, when the resin spring 23 is deformed, stress concentrates on the folded portion 26a of the spring portion 26. However, the folded portion 26a is formed into a shape including a circular shape having a radius equal to or larger than the width of the linear portion 26b. The volume of 26a can be increased and the repulsive force of the spring portion 26 can be improved, and the stress can be distributed to the circular shape of the folded portion 26a, so that the strength of the spring portion 26 can also be improved.

  When the slide ring 19 is slid downward from the coupling position, the slide ring 20 is elastically deformed by the slide claw 20 in addition to the repulsive force of the resin spring 23 when the slide claw 20 passes through the guide surface 28. Since a force is exerted to push 19 up to the connecting position, a sufficient biasing force can be obtained even in the vicinity of the connecting position where the deformation amount of the resin spring 23 is small and the repulsive force is weak.

  Further, by providing the guide recess 27 and providing a clearance of 0.1 mm or more between the slide claw 20 and the guide surface 28 at the connecting position, unnecessary friction between the slide claw 20 and the guide surface 28 is prevented. Thus, the operation of the slide ring 19 can be made smooth.

<Other embodiments>
In the first embodiment, the slide ring 19 is biased upward by inclining so that the guide surface 28 of the connector body 9 faces upward. However, when the repulsive force of the resin spring is too strong, FIG. As shown in a), an extension guide surface 29 may be provided below the guide surface 28, and the extension guide surface 29 may be inclined so as to face downward.
In this case, when the slide ring 19 is slid upward, the slide claw portion 20 is gradually elastically deformed radially outward along the gradient of the extension guide surface 29, and an elastic force for returning to the original shape is generated. work. On the other hand, the component force of the reaction received from the extension guide surface 29 becomes a force for pushing down the slide ring 19 to the release position.
Since this force cancels the repulsive force of the resin spring 23, the force required for the user to slide the slide ring 19 to the release position can be reduced.

In addition, when the repulsive force of the resin spring 23 is insufficient, as shown in FIG. 8B, an extension guide surface 30 is provided below the guide surface 28, and the extension guide surface 30 is inclined so as to face upward. You may let them.
In this case, a force that pushes up the slide ring 19 to the connection position is exerted by the elastic deformation of the slide claw portion 20 over the entire movable range of the slide ring 19 excluding the connection position.

Further, as shown in FIG. 8C, the upper half of the extension guide surface 31 may be inclined so as to face upward, and the lower half of the extension guide surface 31 may be inclined so as to face downward.
In this case, because the elastic deformation of the slide claw portion 20 causes a force to urge the connecting position in the upper half of the movable range of the slide ring 19, the deformation amount of the resin spring 23 is small and the vicinity of the connecting position where the repulsive force is weak. The urging force can be supplemented. Further, since a force for urging to the release position works in the lower half of the movable range of the slide ring 19, the user moves the slide ring 19 to the release position in the vicinity of the connection position where the deformation amount of the resin spring 23 is large and the repulsive force is strong. The force required for sliding can be reduced.
Further, in the middle of the movable range, the slide ring 19 is biased to either the coupling position or the release position, so that the slide ring 19 can be prevented from stopping at a half-end position.

  Thus, by changing the gradient of the extension guide surfaces 29, 30, 31, the direction in which the slide ring 19 is urged is changed, and the load necessary for the operation of the slide ring 19 can be adjusted.

DESCRIPTION OF SYMBOLS 1 Hose coupling 2 Hose side member 3 Apparatus side member 4 Faucet mounting part 4a Screw hole 5 Nipple 6 Stop groove 7 Locking protrusion 8 Seal ring 9 Connector body 10 Receiving port 11 Annular groove 12 Packing 14 Spring 14 Spring base 15 Stop Member 16 annular base portion 17 arm portion 18 retaining claw portion 19 slide ring 20 slide claw portion 21 deformation prevention surface 22 relief recess 23 resin spring 24 upper end portion 25 lower end portion 26 spring portion 26a folded portion 26b linear portion 27 guide recess 28 guide surface 29, 30, 31 Extension guide surface 32 Hose connection pipe 33 Hose holding ring 34 Lock nut 40 Watering nozzle 41 Hose reel

Claims (6)

In the hose coupling for detachably connecting the hose side member connected to the hose and the device side member connected to another device,
The device side member has a nipple inserted into the hose side member from above,
The hose-side member is a member that is formed in a substantially cylindrical shape having a receiving port for receiving the nipple and has a claw opening formed on a peripheral surface thereof, and a member that is fitted to the outer periphery of the connector main body and is in the radial direction A retaining member having a retaining claw portion that is elastically deformable and protrudes from the claw opening into the connector body, a substantially cylindrical slide ring that is slidably attached to the outer periphery of the connector body in the axial direction, and the slide A biasing member for biasing the ring in the axial direction to the coupling position;
When the nipple is inserted into the receiving port at the connecting position of the slide ring, the slide ring prevents elastic deformation of the retaining claw portion, and the retaining claw portion prevents the nipple from coming off,
When the slide ring is slid to the release position against the urging member, the retaining claw portion can be elastically deformed in the radial direction to extract the nipple,
The biasing member extends between a slide ring side end contacting the slide ring side, a body side end contacting the connector main body side, and between the slide ring side end and the body side end. A hose coupling characterized by being a resin-made resin spring having a spring portion having a shape.   The hose coupling according to claim 1, wherein the spring portion is formed in a zigzag shape stretched between the slide ring side end portion and the main body side end portion.   The hose coupling according to claim 2, wherein the folded portion of the zigzag spring portion includes a circular shape having a radius equal to or greater than the width of the linear portion of the spring portion. Projecting inward from the inner peripheral surface of the slide ring, forming a tongue-like slide claw portion that is elastically deformable in the radial direction;
The hose coupling according to any one of claims 1 to 3, wherein a guide surface that is slidable in an axial direction is formed while the slide claw portion is in contact with an outer peripheral surface of the connector main body and elastically deforms.   The guide surface has a portion in which the slide claw portion is positioned relatively radially inward in the coupling position and is gradually radially outward toward a portion where the slide claw portion abuts in the release position. The hose coupling according to claim 4, wherein the hose coupling has a protruding slope.   A watering device comprising the hose coupling according to any one of claims 1 to 5.

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