JP2019100529A - Coupler connected to coupler and device, hose assembly and fixing structure for hose assembly connected to device - Google Patents

Abstract

Provided are a joint and a joint connected to a fixed object, a hose assembly, and a fixing structure for a hose assembly connected to a fixed object, which can realize air bleeding and loosening prevention, and a low profile. It is. An air bleed portion provided on at least one of a bolt and an eye joint portion of a hose assembly includes a valve member capable of releasing or closing the cavity portion or the pipe line to the outside, and the valve member to the cavity portion or the pipe line. A holding unit that holds the valve member, and an adjustment member that can close the cavity or the pipe line by holding the valve member in the holding unit. The corner portion provided on the bolt head portion of the hose assembly includes a slide surface provided on the side in contact with the first washer and a locking surface provided on the delay side in the tightening rotation direction of the bolt from the slide surface. . [Selection] Figure 1

Description

  The present invention relates to a fitting connected to a fitting and a device, a hose assembly and a fixing structure of a hose assembly connected to the device.

Conventionally, when a fluid such as hydraulic oil is circulated through hoses to various machines and devices in construction machines, industrial machines such as agricultural machines, railway vehicles, marine engines, piping for automobiles, piping for various machines and devices, etc. A hose assembly is used.
Therefore, various research and development have been conducted on hose assemblies. For example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 9-250663), a connection between an eye joint and a small diameter metal pipe is obtained to obtain a structure capable of connecting a metal pipe having a pipe diameter larger than the width of the eye joint main body It is disclosed about a structure and its connection method.

  In the connection structure of the eye joint and the small diameter metal pipe described in Patent Document 1, the flat outer peripheral surface formed by the through holes (3) on both sides connected to the annular groove (2) inside the head is parallel flat ( An eye joint formed by integrally projecting a diameter-increased branch pipe (1 ') having a 3', 3 ') and a stepped mounting hole (4) penetrating to the recessed groove (2) on the circumferential side. An enlarged connecting end portion (P) having an elastic seal ring member (5) in at least one annular recess (6) provided in the assembling hole portion of the main body (1) near the end portion of the metal pipe (P) ') To attach the tip end (P ′ ′) of the metal pipe to the step part (4 ′) of the assembling hole (4), and the end part of the branch pipe (1 ′) The connection end (P ') is pressed and connected by caulking (8).

  Patent Document 2 (Japanese Patent Application Laid-Open No. 4-337189) discloses a mounting structure of a branch-attached eye joint.

  In the mounting structure of the branch-attached eye joint described in Patent Document 2, a connecting cylindrical wall extending to the inside is protruded on the peripheral side of an annular wall formed by the eye joint main body, and further a screw surface and an internal flow The bolt is inserted into the axial core hole of the eye joint main body by means of a tightening bolt having a communicating hole to the hole and having an engaging wall at the top, and the main body is screwed and pressed onto the base In the mounting structure formed by clamping, the eye joint main body (1) is formed of an elastic material, and between the bearing surface of the head (3 ') of the clamping bolt (3) and the base (7) Spacing means for maintaining a predetermined spacing is provided, and a pipe (P) is connected to the connecting cylindrical wall (1 ′ ′).

  Patent Document 3 (Japanese Patent Laid-Open No. 2004-245402) discloses a joint body for connecting a fluid control unit incorporating a control valve and a multistage multistage branch pipe, without removing other joint bodies. A joint body which can easily perform replacement work or repair work of the joint body in a short time and can miniaturize the fluid control unit itself is disclosed.

  The joint body described in Patent Document 3 is a joint body for connecting one flow path to another flow path, wherein the joint body is a first joint portion connected to the one flow path at one end. And a joint body having a pivoting portion at the other end and a first communication hole bored therein, and a second coupling portion and the other connected to the other flow path at one end A pivoting hole is formed in the inside of the end portion and has a pivoting portion to be pivoted to the joint body main body, and is internally extended in a direction substantially perpendicular to the pivoting hole through the first communication hole and the groove portion And an elbow portion in which a second communication hole communicating with each other is bored, the groove portion is formed between the pivoting portion and the joint body main body, and sealing portions are provided at both ends of the groove portion It is.

  In patent document 4 (Unexamined-Japanese-Patent No. 2003-106493), the connection structure of metal pipes and eye joints, such as piping for motor vehicles, piping for various machines and apparatuses, shall be highly reliable with respect to airtightness. In addition, a connection structure between a metal pipe and an eye joint is disclosed which performs this connection inexpensively by an easy connection method and improves the productivity.

  In the connection structure between the metal pipe and the eye joint described in Patent Document 4, the eye bolt is inserted into the annular groove into an eye joint main body in which the mounting hole of the eye bolt is formed in the axial core continuously to the annular groove provided inside. A branch pipe arranged in a direction orthogonal to the above is provided integrally with the eye joint main body, at least this branch pipe portion is made of resin, and inserted into the branch pipe of this eye joint main body Alternatively, a resin coating is disposed, and metal piping which is fixed by welding to the inner circumferential surface of the branch pipe via the resin tube or the resin coating is used.

  Patent Document 5 (Japanese Utility Model Laid-Open Publication No. 59-13788) discloses an eye union joint structure.

In the eye union joint structure described in Patent Document 5, an O-ring is fitted to an annular end of the eye union to fit a union bolt, and sealing is performed between these while the eye union can move relative to the union bolt It is something like that.

Patent Document 6 (Japanese Patent Laid-Open No. 2003-56705) discloses an assembly structure of an eye joint.
The assembled structure of the eye joint described in Patent Document 6 comprises an eye joint main body having an eyeball portion in which a bolt hole is formed, a union bolt to be inserted into the bolt hole, and a pair of upper and lower surfaces disposed on the eyeball upper and lower surfaces. In an assembled structure of an eye joint provided with a lower gasket, the upper and lower gaskets are mechanically engaged with the union bolt.

Patent Document 7 (U.S. Pat. No. 5,403,042) discloses an adapter and a connection method of a liquid cooling pipe of a transmission.
The structure of the adapter described in Patent Document 7 is such that a banjo nut is inserted through a washer into a banjo fitting attached to the tip of a cooling pipe and connected to a hose attached to a cooling device.

JP-A-9-250663 Japanese Patent Laid-Open No. 4-337189 JP 2004-245402 A Japanese Patent Application Laid-Open No. 2003-106493 Japanese Utility Model Application Publication No. 59-13788 JP 2003-56705 A U.S. Pat. No. 5,403,042

The above-mentioned Patent Documents 1 to 7 disclose connection structures related to an eye joint.
However, in recent years, a hose assembly using an eye joint is required to have various functions such as reduction in height, air bleeding, and locking. However, when provided with functions such as air bleeding and locking, it has been difficult to realize a reduction in height.

The main object of the present invention is to provide a fixing structure of a joint connected to a joint and a device capable of realizing air removal and a reduction in height, a hose assembly and a hose assembly connected to the device. It is.
Another object of the present invention is to provide a joint connected to a joint and a device capable of realizing a locking and a reduction in height, a fixing structure of a hose assembly connected to a joint and a hose assembly and a device. It is.
Still another object of the present invention is to provide a joint capable of achieving air bleeding and locking, as well as a reduction in height, a joint connected to the joint and a device, a fixed structure of a hose assembly connected to the hose assembly and the device, and To provide.

(1)
The joint according to one aspect is a joint, wherein an eye joint portion and an axial portion of the bolt are inserted through a bolt hole provided in the eye joint portion, and the axial portion of the bolt is screwed into a screw hole provided in the device. By means of a bolt for fixing the eye joint part to the device, the eye joint part having a duct, the bolt having a cavity communicating with the duct of the eye joint, at least the bolt and the eye joint An air vent is provided on one side, and the air vent holds the valve member capable of releasing or closing the hollow portion or the duct to the outside, the holding portion for holding the valve member in the hollow portion or the duct, and the valve member And an adjusting member capable of closing the cavity or the duct by holding the portion.

  In this case, the air accumulated in the cavity or the pipe can be evacuated at the air vent. Therefore, it is possible to realize the air removal and to reduce the height by providing the air release part in the bolt or the eye joint part.

(2)
A joint according to a second aspect of the present invention is the joint according to one aspect, wherein the holding portion is a mortar-shaped holding portion formed in a hollow portion or a mortar-shaped holding portion formed in a conduit, and the valve member is a holding portion It may be a sphere that can be held by

  In this case, the spherical valve member is in close contact with the mortar-shaped holding portion. Therefore, the cavity or the conduit can be tightly closed.

(3)
A joint according to a third aspect of the present invention is the joint according to the first aspect or the second aspect, wherein an external thread that can be screwed to an internal thread formed in the hollow portion or the inner circumferential surface of the conduit is It may be formed and the adjustment member may be provided with a slit for communicating the inside of the cavity or the inside of the conduit with the outside.

  In this case, by loosening the adjusting member, air accumulated in the cavity or the conduit can be removed through the slit. Therefore, the air can be removed easily.

(4)
A joint according to a fourth aspect of the present invention is a joint, wherein the shaft portion of the bolt is passed through the eye joint portion and the bolt hole provided in the eye joint portion, and the shaft portion of the bolt is screwed in the screw hole provided in the device. A surface that contacts the first washer of the head of the bolt, including a bolt that secures the eye joint to the device by mating, and a first washer disposed between the head of the bolt and the eye joint One or more corner portions are formed, and the corner portions include a slide surface provided on the side in contact with the first washer, and a locking surface provided on the lag side in the tightening rotational direction of the bolt from the slide surface. One or more first uneven portions are provided on the first surface of the eye joint portion including the first joint and in contact with the first washer.

  In this case, the rotation of the bolt in the slack direction is suppressed by the corner portion provided on the head of the bolt and the first uneven portion provided on the first surface of the eye joint portion. As a result, it is possible to realize the retention of slack and to realize a reduction in height.

(5)
The joint according to a fifth aspect of the present invention is the joint according to the fourth aspect, wherein the angle between the sliding surface and the locking surface at the corner may be a right angle or an acute angle.

  In this case, the bolt can rotate while sliding in contact with the first washer at the slide surface in the tightening direction. On the contrary, the bolt is prevented from rotating in the loosening direction by the locking surface. Therefore, the bolt can be secured.

(6)
A joint according to a sixth aspect of the present invention is the joint according to the fourth aspect or the fifth aspect, wherein by tightening a bolt, a part of the first washer deforms and engages with the corner and the first uneven part It may be one.

  In this case, it is not necessary to process the first washer because a part of the first washer is deformed by pressure bonding by screwing of bolts. Therefore, the locking can be realized easily and at low cost.

(7)
A joint according to a seventh invention is the joint according to the fourth invention or the fifth invention, wherein the first washer has a fitting uneven portion having a shape to be fitted with a corner on the surface in contact with the head of the bolt. The fitting uneven part of the shape fitted with a 1st uneven part may be provided in the field which is provided and contacts an eye joint part.

  In this case, the fitting uneven portion provided on the first washer fits in the corner and the first uneven portion. Therefore, strong locking can be realized.

(8)
The fixing structure for the device according to the eighth invention and the joint comprises the joint according to any of the fourth to seventh inventions, a device provided with a screw hole for screwing a bolt, and an eye joint And a second washer disposed between the unit and the device, wherein the second surface of the eye joint portion in contact with the second washer is provided with one or more second concavo-convex portions, and is in contact with the second washer The third surface is provided with one or more third concavo-convex portions and fixed to the device.

  In this case, the connection portion of the bolt, the eye joint portion and the device is fixed by the corner portion, the first uneven portion, the second uneven portion and the third uneven portion. Furthermore, the bolt locking structure can prevent the coupling from being detached from the device and / or the leakage of a liquid such as hydraulic oil.

(9)
In the fixing structure of the device according to the ninth invention and the joint, in the fixing structure of the device and the joint according to the eighth invention, a part of the second washer is deformed by tightening a bolt so that a second uneven portion is formed. And the third uneven portion.

  In this case, it is not necessary to process the second washer because a part of the second washer is deformed by pressure bonding by screwing of bolts. Therefore, the fixing structure between the device and the joint can be realized easily and at low cost.

(10)
In the fixing structure of the device according to the tenth invention and the joint, in the fixing structure of the device and the joint according to the eighth invention, the second washer has a second unevenness on a surface in contact with the second surface of the eye joint portion. A fitting concavo-convex part of the shape fitted with a part is provided, and a fitting concavo-convex part of the shape fitted with the 3rd concavo-convex part is provided in the field which contacts with a device.

  In this case, the fitting uneven portion provided on the second washer fits in the second uneven portion and the third uneven portion. Therefore, strong locking can be realized.

(11)
A hose assembly according to an eleventh aspect of the present invention is a hose assembly for delivering a liquid through a hose to a device, comprising a hose, an eye joint connected to one end of the hose, and a bolt hole provided in the eye joint. And a bolt for fixing the eye joint portion to the device by screwing the shaft portion of the bolt into the screw hole provided in the device, and the eye joint portion communicates with the inside of the hose. The bolt has a hollow portion in communication with the duct of the eye joint portion, at least one of the bolt and the eye joint portion is provided with an air vent portion, and the air vent portion is a hollow portion or duct A valve member that can be released or closed to the outside, a holding portion that holds the valve member in the cavity portion or the pipeline, and a cavity portion or the pipeline is closed by holding the valve member in the holding portion. An adjusting member capable of, and has a.

  In this case, the air accumulated in the cavity or the pipe can be evacuated at the air vent. Therefore, it is possible to realize the air removal and to reduce the height by providing the air release part in the bolt or the eye joint part.

(12)
A hose assembly according to a twelfth aspect of the invention is the hose assembly according to the eleventh aspect, wherein the holding portion is a mortar-shaped holding portion formed in the hollow portion or a mortar-shaped holding portion formed in the pipeline The valve member may be a sphere that can be held by the holder.

  In this case, the spherical valve member is in close contact with the mortar-shaped holding portion. Therefore, the cavity or the conduit can be tightly closed.

(13)
A hose assembly according to a thirteenth aspect of the present invention is the hose assembly according to the eleventh aspect or the twelfth aspect, wherein a female screw formed on an inner peripheral surface of a hollow portion or a pipe is screwed on the outer periphery of the adjustment member. An external thread may be formed, and the adjusting member may be provided with a slit for communicating the inside of the cavity or the inside of the conduit with the outside.

  In this case, by loosening the adjusting member, air accumulated in the cavity or the conduit can be removed through the slit. Therefore, the air can be removed easily.

(14)
A hose assembly according to a fourteenth aspect of the present invention is a hose assembly for sending a fluid through the hose to the apparatus, the hose assembly comprising the hose, an eye joint connected to one end of the hose, and an eye joint Insert the bolt shaft into the bolt hole and screw the bolt shaft into the screw hole provided in the device to fix the eye joint to the device, head of the bolt and eye joint, and And one or more corner portions are formed on a surface of the head of the bolt in contact with the first washer, the corner portion being on the side in contact with the first washer. One or more first uneven portions on the first surface of the eye joint portion in contact with the first washer, including the provided slide surface and the locking surface provided on the delay side in the tightening rotation direction of the bolt from the slide surface It is those provided.

  In this case, the rotation of the bolt in the slack direction is suppressed by the corner portion provided on the head of the bolt and the first uneven portion provided on the first surface of the eye joint portion. As a result, it is possible to realize the retention of slack and to realize a reduction in height.

(15)
The hose assembly according to the fifteenth invention is the hose assembly according to the fourteenth invention, wherein the angle between the sliding surface and the locking surface at the corner may be a right angle or an acute angle.

  In this case, the bolt can rotate while sliding in contact with the first washer at the slide surface in the tightening direction. On the contrary, the bolt is prevented from rotating in the loosening direction by the locking surface. Therefore, the bolt can be secured.

(16)
A hose assembly according to a sixteenth invention is the hose assembly according to the fourteenth invention or the fifteenth invention, wherein by tightening a bolt, a part of the first washer is deformed to fit into the corner and the first uneven part. It may be compatible.

  In this case, it is not necessary to process the first washer because a part of the first washer is deformed by pressure bonding by screwing of bolts. Therefore, the locking can be realized easily and at low cost.

(17)
A hose assembly according to a seventeenth invention is the hose assembly according to the fourteenth invention or the fifteenth invention, wherein the first washer has a fitting unevenness in a shape to be fitted with a corner on the surface in contact with the head of the bolt. A part may be provided, and the fitting concavo-convex part of the shape fitted with the 1st concavo-convex part may be provided in the field which contacts an eye joint part.

  In this case, the fitting uneven portion provided on the first washer fits in the corner and the first uneven portion. Therefore, strong locking can be realized.

(18)
A hose assembly according to an eighteenth aspect of the present invention may further include a one-touch coupler portion attached to the other end side of the hose in the hose assembly according to any of the eleventh through seventeenth aspects.

In this case, the hose assembly can be easily connected or disconnected from another hose or device at the one-touch coupler portion. Therefore, maintenance of the apparatus using a hose assembly can be performed easily.
In particular, when the hose assembly is connected to a device requiring regular maintenance, replacement can be easily performed.

(19)
A fixing structure for a device according to a nineteenth invention and a hose assembly comprises the hose assembly according to any of the fourteenth to eighteenth inventions, a device provided with a screw hole into which a bolt is screwed, And a second washer disposed between the eye joint and the device, the second surface of the eye joint contacting the second washer being provided with one or more second irregularities, the second washer and the second washer One or a plurality of third irregularities are provided on the surface of the device to be in contact with and fixed to the device.

  In this case, the connection portion of the bolt, the eye joint portion and the device is fixed by the corner portion, the first uneven portion, the second uneven portion and the third uneven portion. Furthermore, the bolt locking structure can prevent the hose assembly from coming off the device.

(20)
In the fixing structure of the device according to the twentieth invention and the hose assembly, in the fixing structure of the device and the hose assembly according to the nineteenth invention, a part of the second washer is deformed by tightening a bolt. It fits with the uneven portion and the third uneven portion.

  In this case, it is not necessary to process the second washer because a part of the second washer is deformed by pressure bonding by screwing of bolts. Therefore, the fixing structure between the device and the hose assembly can be realized easily and at low cost.

(21)
In the fixing structure of the device according to the twenty-first invention and the hose assembly, in the fixing structure of the device and the hose assembly according to the nineteenth invention, the second washer is provided on the surface in contact with the second surface of the eye joint portion. (2) A fitting concavo-convex part having a shape fitted to the concavo-convex part is provided, and a fitting concavo-convex part having a shape fitted to the third concavo-convex part is provided on the surface in contact with the device.

  In this case, the fitting uneven portion provided on the second washer fits in the second uneven portion and the third uneven portion. Therefore, strong locking can be realized.

It is a schematic diagram which shows an example of the hose assembly concerning 1st Embodiment. It is a typical perspective view showing an example of the structure of the bolt concerning a 1st embodiment. They are a top view from the head side of a bolt concerning a 1st embodiment, and a typical sectional view showing an example of internal structure of a bolt when it cuts in a dotted line shown in a top view. It is a typical perspective view showing an example of the structure of the eye joint part concerning a 1st embodiment. It is an assembly drawing for demonstrating the connection of each part concerning 1st Embodiment. It is a schematic diagram which shows an example of the hose assembly concerning 2nd Embodiment. It is a schematic cross section which shows an example of the internal structure of the hose assembly concerning 2nd Embodiment. It is a schematic diagram which shows an example of the hose assembly concerning 3rd Embodiment. It is a schematic cross section which shows an example of the internal structure of the hose assembly concerning 3rd Embodiment. It is an assembly drawing which shows an example of the hose assembly concerning 4th Embodiment. It is a schematic diagram which shows an example of the structure of the bolt concerning 4th Embodiment. It is a schematic diagram which shows another example of the structure of the bolt concerning 4th Embodiment. It is a schematic diagram which shows an example of the securing structure concerning 4th Embodiment. It is an assembly drawing which shows an example of the hose assembly concerning 5th Embodiment. It is a schematic diagram which shows an example of the structure of the 1st washer concerning 5th Embodiment. It is a schematic diagram which shows an example of the structure of the 2nd washer concerning 5th Embodiment. It is a schematic diagram which shows an example of the securing structure concerning 5th Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same components are denoted by the same reference numerals. Moreover, in the case of the same sign, their names and functions are also the same. Therefore, detailed description about them shall not be repeated.

First Embodiment
FIG. 1 is a schematic view showing an example of a hose assembly 100 according to a first embodiment.

(Hose assembly 100)
The hose assembly according to the first embodiment is used when fluid such as hydraulic oil, lubricating oil and fuel is circulated through the hose to various machines and devices.
As shown in FIG. 1, the hose assembly 100 includes a bolt 200, an eye joint 300, a first washer 410, a second washer 420, a hose 500, an air vent 600, and a one-touch coupler 700.
The joint 900 also includes at least a bolt 200, an eye joint 300, a first washer 410, and an air vent 600.

  The hose assembly 100 according to the first embodiment is fixed to the device 800 by screwing a bolt 200 into a screw hole 810 provided in the device 800 such as various machines and devices. In other words, connect the eye joint 300 to one end of the hose, pass the shaft of the bolt through the bolt hole provided in the eye joint 300, and screw the shaft of the bolt into the screw hole provided in the device. The eye joint is fixed to the device by Thus, one end of the hose is connected to the fixed part.

(Bolt 200)
FIG. 2 is a schematic perspective view showing an example of the structure of a bolt. FIG. 3 is a schematic cross-sectional view showing an example of a plan view of the bolt 200 from the side of the head 210 and an example of an internal structure of the bolt 200 when cut along a dotted line shown in the plan view.

As shown in FIGS. 2 and 3, the bolt 200 includes a shaft 220 and a head 210 integrally provided at one end of the shaft 220.
A male screw 221 is formed on the outer peripheral side of the shaft portion 220, and a through hole 223 is formed on the head portion 210 side of the shaft portion 220. In the first embodiment, four through holes 223 are provided at equal intervals in the circumferential direction in the radial direction from the axial center of the shaft portion 220.
Although the through hole 223 is formed in the shaft portion 220, the present invention is not limited to this, and a cylindrical portion not formed with a screw is formed as in the middle bolt instead of the full thread. Through holes 223 may be formed in the peripheral wall.

Further, a hole 222 is formed inside the center of the shaft portion 220. The hole 222 is formed in the axial direction of the inside of the shaft portion 220 from the one end of the shaft portion 220 to the head portion 210 side where at least the through hole 223 is formed. Furthermore, the hole 222 communicates with the through hole 223.
The head 210 is provided with an air vent 600 as described later.

(Eye joint part 300)
FIG. 4 is a schematic perspective view showing an example of the structure of the eye joint portion 300. As shown in FIG.
As shown in FIG. 4, the eye joint portion 300 mainly includes an eyeball portion 310 and a branch pipe 320 connected to the outer surface of the eyeball portion 310.
The outer shape of the eyeball portion 310 has a shape obtained by cutting two spherical ends facing each other in parallel planes. That is, the outer shape of the eyeball portion 310 has a substantially donut shape. As shown in FIG. 4, the eyeball 310 has a first surface 311 and a second surface 312 parallel to the first surface 311. A bolt hole 317 is formed between the first surface 311 and the second surface 312 to allow the shaft 220 of the bolt 200 to pass therethrough.
The branch pipe 320 is connected to a part of the outer surface of the eyeball 310 so as to extend outward in a direction parallel to the first surface 311 and the second surface 312.

  As shown in FIG. 4, an annular groove 315 is formed inside the eyeball portion 310. The annular groove 315 is formed so that the thickness of the eyeball 310 (that is, the distance between the inner surface of the annular groove and the outer peripheral surface of the eyeball) is substantially uniform.

Further, as shown in FIG. 4, the branch pipe 320 is cylindrical and has a communication hole 321 communicating with the annular groove 315.
As shown in FIG. 4, the hose 500 is connected to the extension end of the branch pipe 320, and the branch pipe 320 is fixed to the end of the hose 500 by caulking or the like. In addition, in 1st Embodiment, although fixed by caulking, other arbitrary fixing methods, such as a screw, may be used.
The inside of the eye joint portion 300 communicates with the inside of the hose 500 via the annular groove 315 and the communication hole 321 to form a conduit.

(First washer 410 and second washer 420)
FIG. 5 is an exploded perspective view for explaining connection of respective parts according to the first embodiment.
As shown in FIG. 5, the first washer 410 and the second washer 420 are ring-shaped members provided with a through hole at the center. The first washer 410 is disposed between the head 210 of the bolt 200 and the first surface 311 of the eye joint 300. The second washer 420 is disposed between the second surface 312 of the eye joint 300 and the fixed surface of the device 800.

(Air vent 600)
Next, the air vent 600 will be described.
As shown in FIG. 3, in the hose assembly 100 according to the first embodiment, an air vent hole 610 which passes through the head portion 210 of the bolt 200 and communicates with the hole 222 is formed. In addition, the air vent hole 610 includes a hollow portion having an inner diameter slightly larger than the inner diameter of the hole 222 and a mortar-shaped holding portion 615 formed at the bottom. An internal thread is formed on the inner peripheral surface of the hollow portion of the air vent hole 610.

A valve member 620 is disposed in the air vent hole 610. That is, the valve member 620 is disposed at the portion of the holding portion 615 in the air vent hole 610. Further, the adjusting member 630 is adjustably fixed to the air vent hole 610.
An external thread is formed on the outer peripheral surface of the adjustment member 630, and is screwed with an internal thread formed on the inner peripheral surface of the hollow portion of the air vent hole 610. By tightening the adjustment member 630, the valve member 620 is pressed against and closely attached to the inner surface of the mortar-shaped portion 615, so the opening of the hole 222 is closed by the valve member 620. In this way, it is possible to prevent the leakage of liquid or gas flowing inside the bolt 200.

  On the other hand, by loosening the adjustment member 630, the valve member 620 is separated from the inner surface of the mortar-shaped portion 615 by the pressure of the liquid present in the bolt. Since the slit 635 running in the axial direction is formed on the outer peripheral surface of the adjustment member 630, when the valve member 620 is separated from the inner surface of the mortar-shaped portion 615, the liquid flowing inside the bolt 200 is discharged to the outside through the slit 635 be able to.

Normally, the gas in the flow path is discharged from the air vent hole 610 by filling the hose with liquid while the adjusting member 630 is in a loose state. When the inside of the flow path is filled with the liquid, only the liquid leaks from the air vent hole 610, so the adjustment member 630 is tightened to close the flow path.
Although the slits 635 are formed on the outer peripheral surface of the adjusting member 630 in the embodiment shown in FIG. 3, the slits 635 may be formed long in the axial direction inside the adjusting member 630 or may be formed in a spiral shape. .

(One-touch coupler unit 700)
Next, the one-touch coupler unit 700 will be described.
As shown in FIG. 1, the one-touch coupler unit 700 is connected to the end of the hose 500 opposite to the end to which the eye joint unit 300 is fixed. Therefore, in the one-touch coupler portion 700, another hose or device can be easily connected or disconnected from the hose assembly 100. Therefore, maintenance of the apparatus using the hose assembly 100 can be easily performed.
In the first embodiment, the length of the hose 500 is preferably 10 cm or more and 10 m or less, and more preferably 30 cm or more and 5 m or less.

(Connection of each part)
As shown in FIG. 5, the shaft 220 of the bolt 200 is penetrated through the first washer 410, the eyeball 310 of the eye joint 300 and the second washer 420 and screwed into the screw hole 810 of the device 800.
As a result, the communication hole 321 of the eye joint 300, the annular groove 315, the through hole 223 of the bolt 200, and the hole 222 communicate with each other to form a flow path. That is, the fluid flowing through the hose 500 flows into the inside of the device 800 through the eye joint 300 and the bolt 200.

As described above, the hose assembly 100 according to the first embodiment is provided with the air vent 600 at the head 210 of the bolt 200.
When the hose assembly 100 according to the first embodiment is attached to the screw hole 810 provided on the upper surface of the apparatus 800 in the vertical direction, the air vent 600 can be disposed at the highest position of the flow path.
In this case, if the hose is filled with the liquid with the adjusting member 630 loosened, the gas present in the liquid collects in the space above the hole in the bolt, and the above operation facilitates the gas in the bolt. It can be pulled out.
Further, since the air venting portion 600 is formed in the internal structure of the bolt 200, it is possible to realize a low profile without attaching another member for air venting to the bolt.

  In the present invention, the hose assembly 100 corresponds to a "hose assembly", the bolt 200 corresponds to a "bolt", the head 210 corresponds to a "head of a bolt", and the shaft portion 220 The hole 222 and the through hole 223 correspond to a "cavity", the eye joint 300 corresponds to an "eye joint", and the first surface 311 corresponds to an "eye joint". The second surface 312 corresponds to the “second surface of the eye joint portion”, and the annular groove 315 and the communication hole 321 correspond to the “pipeline”, and the bolt hole 317 corresponds to the "bolt hole", the first washer 410 corresponds to the "first washer", the second washer 420 corresponds to the "second washer", and the hose 500 corresponds to the "hose" The air vent 600 corresponds to the "air vent", The holding portion 615 corresponds to a "holding portion", the valve member 620 corresponds to a "valve member", the adjustment member 630 corresponds to a "adjustment member", and the slit 635 corresponds to a "slit", The one-touch coupler unit 700 corresponds to a "one-touch coupler unit", the device 800 corresponds to a "device", the screw hole 810 corresponds to a "screw hole", and the joint 900 corresponds to a "joint".

Second Embodiment
FIG. 6 is a schematic view showing an example of a hose assembly according to a second embodiment. FIG. 7 is a schematic cross-sectional view showing an example of the internal structure of the hose assembly according to the second embodiment.

(Hose assembly 100)
As shown in FIG. 6, the hose assembly 100 according to the second embodiment includes a bolt 200, an eye joint 300, a first washer 410, a second washer 420, a hose 500, an air vent 600, and a one-touch coupler. Including 700.
The joint 900 also includes at least a bolt 200, an eye joint 300, a first washer 410, and an air vent 600.

As shown in FIGS. 6 and 7, the hose assembly 100 according to the second embodiment is provided with an air vent 600 on the side surface of the eye joint 300. The specific configuration of the air vent 600 is the same as that of the first embodiment.
Therefore, when the hose assembly 100 according to the second embodiment is attached to the screw hole 810 provided to extend horizontally with respect to the ground, the air vent 600 is disposed at the highest position of the flow path. be able to.

  In the present invention, the hose assembly 100 corresponds to a “hose assembly”, the bolt 200 corresponds to a “bolt”, the eye joint 300 corresponds to an “eye joint”, and the first washer 410 is The second washer 420 corresponds to the "second washer", the hose 500 corresponds to the "hose", and the air venting portion 600 corresponds to the "air venting portion". The one-touch coupler unit 700 corresponds to a "one-touch coupler unit", the screw hole 810 corresponds to a "screw hole", and the joint 900 corresponds to a "joint".

Third Embodiment
FIG. 8 is a schematic plan view showing an example of a hose assembly according to a third embodiment. Moreover, FIG. 9 is typical sectional drawing which shows an example of the internal structure of the hose assembly concerning 3rd Embodiment.

(Hose assembly 100)
As shown in FIGS. 8 and 9, the hose assembly 100 according to the third embodiment includes a bolt 200, an eye joint 300, a first washer 410, a second washer 420, a hose 500, and a plurality of air vents 600. , And a one-touch coupler unit 700 (not shown).
The joint 900 also includes at least a bolt 200, an eye joint 300, a first washer 410, and a plurality of air vents 600.

  As shown in FIGS. 8 and 9, the hose assembly 100 according to the third embodiment has an air vent 600 in the bolt 200 and a plurality of air vents 600 in the eye joint 300 as well. is there. The specific configuration of the air vent 600 is the same as that of the first embodiment.

  In this case, the hose assembly 100 achieves a reduction in height, and any air vent 600 can be disposed at the highest position of the flow path regardless of the mounting direction to the device 800 in any case.

  In the present invention, the hose assembly 100 corresponds to a “hose assembly”, the bolt 200 corresponds to a “bolt”, the eye joint 300 corresponds to an “eye joint”, and the first washer 410 is The second washer 420 corresponds to the "second washer", the hose 500 corresponds to the "hose", and the air venting portion 600 corresponds to the "air venting portion". The one-touch coupler unit 700 corresponds to a "one-touch coupler unit", the screw hole 810 corresponds to a "screw hole", and the joint 900 corresponds to a "joint".

Fourth Embodiment
FIG. 10 is an assembly drawing showing an example of a hose assembly according to the fourth embodiment.

(Hose assembly 100)
The hose assembly 100 according to the fourth embodiment includes a bolt 200, an eye joint 300, a first washer 410, a second washer 420, a hose 500 (not shown), and a one-touch coupler 700 (not shown). Including.
The joint 900 also includes at least a bolt 200, an eye joint 300, and a first washer 410.

(Bolt 200)
FIG. 11 is a schematic perspective view showing an example of the structure of a bolt according to the fourth embodiment. FIG. 12 is a schematic perspective view showing another example of the bolt structure according to the fourth embodiment.

  As shown in FIG. 11, in the bolt 200 according to the fourth embodiment, corner portions 211 are provided on the surface of the head 210 in contact with the first washer 410. The corner portion 211 includes a slide surface 213 provided on the side in contact with the first washer 410, and a locking surface 212 provided on the slide surface 213 on the delaying side of the bolt 200 in the tightening rotation direction. In FIG. 11, the angle between the locking surface 212 and the sliding surface 213 is a right angle.

Further, as shown in FIG. 12, the corner portion 211 may be provided such that the angle formed by the locking surface 212 and the slide surface 213 is an acute angle.
Furthermore, a plurality of corner portions 211 may be provided.
When the bolt 200 is tightened, a locking structure is formed at the corner portion 211 as described later.

(Eye joint part 300)
As shown in FIG. 10, one or more first concavo-convex parts 318 are formed on the first surface 311 of the eye joint part 300 according to the fourth embodiment. The second surface 312 is provided with one or more second uneven portions 319. The first concavo-convex part 318 and the second concavo-convex part 319 are used for the slack prevention of the bolt 200 as described later.

(Device 800)
In the hose assembly 100 according to the fourth embodiment, the third uneven portion 820 is provided on the surface of the device 800 in contact with the second washer 420. The third uneven portion 820 is used for securing the bolt 200 as described later. Apparatus 800 includes various machine tools and the like.

(First washer 410 and second washer 420)
In the hose assembly 100 according to the fourth embodiment, the first washer 410 and the second washer 420 are made of a material whose rigidity is smaller than that of the bolt 200, the eye joint 300 and the device 800.

(Sag retention structure)
FIG. 13 is a schematic view showing an example of the slack prevention structure according to the fourth embodiment.

  As shown in FIG. 13, when the bolt 200 is screwed into the screw hole 810, the first washer 410 and the second washer 420 are crimped by the bolt 200. The first washer 410 is deformed when pressed by the bolt 200 and penetrates into the first uneven portion 318. The second washer 420 is deformed when pressed by the bolt 200 and penetrates into the second uneven portion 319 and the third uneven portion 820.

Here, the head portion 210 includes a slide surface 213 provided on the surface on the side in contact with the first washer 410 and a locking surface 212 provided on the slide surface 213 from the slide surface 213 on the delaying rotational direction of the bolt 200. It has a corner 211.
In this case, the bolt 200 can rotate while sliding in contact with the first washer 410 at the slide surface 213 in the tightening direction. On the contrary, the bolt 200 is prevented from rotating in the loosening direction by the locking surface 212.

  As described above, the hose assembly 100 according to the fourth embodiment can achieve the locking and can reduce the height. In addition, since it is not necessary to process the first washer 410 and the second washer 420, the locking can be realized easily and at low cost.

In the present invention, the hose assembly 100 corresponds to a "hose assembly", the bolt 200 corresponds to a "bolt", the head 210 corresponds to a "head of a bolt", and the corner portion 211 The locking surface 212 corresponds to a "locking surface", the slide surface 213 corresponds to a "sliding surface", and the eye joint 300 corresponds to an "eye joint". The first surface 311 corresponds to the “first surface of the eye joint portion”, the first uneven portion 318 corresponds to the “first uneven portion”, and the second surface 312 corresponds to the “first surface of the eye joint portion”. The second uneven portion 319 corresponds to the “second uneven portion”, the first washer 410 corresponds to the “first washer”, and the second washer 420 corresponds to the “second washer”. The hose 500 corresponds to “hose”, and the one-touch coupler unit 700 corresponds to Corresponds to the one-touch coupler portion ", device 800 corresponds to the" device ", a screw hole 810 corresponds to the" threaded hole ", joint 900 corresponds to the" joint ".
Fifth Embodiment
FIG. 14 is an assembly drawing showing an example of a hose assembly according to the fifth embodiment.

(Hose assembly 100)
The hose assembly 100 according to the fifth embodiment includes a bolt 200, an eye joint 300, a first washer 410, a second washer 420, a hose 500 (not shown), and a one-touch coupler 700 (not shown). Including.
The joint 900 also includes at least a bolt 200, an eye joint 300, and a first washer 410.

(First washer 410 and second washer 420)
FIG. 15 is a schematic view showing an example of the structure of the first washer according to the fifth embodiment. FIG. 16 is a schematic view showing an example of the structure of a second washer according to the fifth embodiment.

  As shown in FIG. 15, on the surface joined to the bolt 200 side of the first washer 410, a fitting unevenness portion 411 is provided so as to be fitted to the corner portion 211. Further, on the surface of the first washer 410 to be joined to the eye joint portion 300 side, a fitting unevenness portion 412 is provided so as to be fitted to the first unevenness portion 318.

  On the surface joined to the eye joint part 300 side of the second washer 420, a fitting concavo-convex part 421 is provided so as to be fitted to the second concavo-convex part 319. Further, a fitting concave and convex portion 422 is provided on the surface of the second washer 420 in contact with the device 800 so as to be fitted to the third concave and convex portion 820.

(Sag retention structure)
FIG. 17 is a schematic view showing an example of the slack prevention structure according to the fifth embodiment.

  As shown in FIG. 17, when the bolt 200 is screwed into the screw hole 810, the first washer 410, the eye joint portion 300, the second washer 420 and the device 800 are engaged by the concavo-convex structure provided on the respective contact surfaces. Do.

Here, the head portion 210 includes a slide surface 213 provided on the surface on the side in contact with the first washer 410 and a locking surface 212 provided on the slide surface 213 from the slide surface 213 on the delaying rotational direction of the bolt 200. It has a corner 211.
In this case, the bolt 200 can rotate while sliding in contact with the first washer 410 at the slide surface 213 in the tightening direction. On the contrary, the bolt 200 is prevented from rotating in the loosening direction by the locking surface 212.

  As described above, the hose assembly 100 according to the fifth embodiment can achieve the locking and can reduce the height. Further, by the concavo-convex structure provided in the first washer 410 and the second washer 420, strong slack prevention can be realized.

  In the present invention, the hose assembly 100 corresponds to a "hose assembly", the bolt 200 corresponds to a "bolt", the head 210 corresponds to a "head of a bolt", and the corner portion 211 The locking surface 212 corresponds to a "locking surface", the slide surface 213 corresponds to a "sliding surface", and the eye joint 300 corresponds to an "eye joint". The first uneven portion 318 corresponds to the “first uneven portion”, the second uneven portion 319 corresponds to the “second uneven portion”, and the first washer 410 corresponds to the “first washer”, and the first uneven portion 318 corresponds to the “first uneven portion”. The two washers 420 correspond to the "second washer", and the fitting concavo-convex part 411, the fitting concavo-convex part 412, the fitting concavo-convex part 421 and the fitting concavo-convex part 422 correspond to the "fitting concavo-convex part" The 500 corresponds to the “hose”, and the one-touch coupler unit 700 The device 800 corresponds to a “device”, the screw hole 810 corresponds to a “screw hole”, the third uneven portion 820 corresponds to a “third uneven portion”, and the joint 900 Corresponds to the “joint”.

  Although a preferred embodiment of the present invention is as described above, the present invention is not limited thereto. It will be understood that various other embodiments may be made without departing from the spirit and scope of the present invention. Furthermore, in the present embodiment, actions and effects according to the configuration of the present invention are described, but these actions and effects are only examples and do not limit the present invention.

Reference Signs List 100 hose assembly 200 bolt 210 head portion 211 corner portion 212 locking surface 213 sliding surface 220 shaft portion 221 male screw 222 hole 223 through hole 300 eye joint portion 310 eyepiece portion 311 first surface 312 second surface 315 annular groove 317 bolt Hole 318 first uneven portion 319 second uneven portion 320 branch pipe 321 communication hole 410 first washer 411 fitting uneven portion 412 fitting uneven portion 420 second washer 421 fitting uneven portion 422 fitting uneven portion 500 hose 600 air bleeding Part 610 Air vent hole 615 Holding part 620 Valve member 630 Adjustment member 635 Slit 700 One-touch coupler part 800 Member 810 Screw hole 820 Third uneven part

Claims (21)

A joint,
Eye joint part,
A bolt for fixing the eye joint portion to the device by inserting the shaft portion of the bolt through the bolt hole provided in the eye joint portion and screwing the shaft portion of the bolt into a screw hole provided in the device; , Including
The eye joint has a conduit and
The bolt has a hollow portion communicating with the duct of the eye joint portion,
An air vent is provided on at least one of the bolt and the eye joint.
The air venting portion may be a valve member capable of releasing or closing the hollow portion or the duct to the outside, a holding portion for holding the valve member in the hollow portion or the duct, and the holding portion for the valve member. And an adjusting member capable of closing the hollow portion or the conduit by holding the same. The holding portion is a mortar-shaped holding portion formed in the hollow portion or a mortar-shaped holding portion formed in the pipe,
The joint according to claim 1, wherein the valve member is a sphere that can be held by the holding portion.   An external thread that can be screwed to an internal thread formed on the inner peripheral surface of the hollow portion or the conduit is formed on the outer periphery of the adjusting member, and the inside of the hollow portion or the conduit communicates with the outside of the adjusting member. The joint according to claim 1 or 2, wherein a slit is provided. A joint,
Eye joint part,
A bolt for fixing the eye joint portion to the device by inserting the shaft portion of the bolt through the bolt hole provided in the eye joint portion and screwing the shaft portion of the bolt into a screw hole provided in the device;
Including a first washer disposed between the head of the bolt and the eye joint;
One or more corners are formed on the surface of the head of the bolt in contact with the first washer;
The corner portion includes a slide surface provided on the side in contact with the first washer, and a locking surface provided on the lag side in the tightening rotational direction of the bolt from the slide surface.
A joint, wherein one or more first concavo-convex portions are provided on a first surface of the eye joint portion in contact with the first washer.   5. The joint according to claim 4, wherein an angle formed by the sliding surface and the locking surface at the corner is a right angle or an acute angle.   The joint according to claim 4 or 5, wherein by tightening the bolt, a part of the first washer is deformed to fit with the corner and the first uneven portion. The first washer is
A fitting unevenness portion having a shape to be fitted to the corner portion is provided on the surface in contact with the head of the bolt,
The joint according to claim 4 or 5, wherein a fitting concavo-convex part having a shape to be fitted to the first concavo-convex part is provided on a surface in contact with the eye joint part. A joint according to any one of claims 4 to 7;
A device provided with a screw hole for screwing the bolt;
Including a second washer disposed between the eye joint and the device;
One or more second concavo-convex parts are provided on the second surface of the eye joint part in contact with the second washer;
One or more third asperities are provided on the side of the device in contact with the second washer,
Fixing structure of the device and the joint fixed to the device.   The fixing structure of the device and the joint according to claim 8, wherein when the bolt is tightened, a part of the second washer is deformed and fitted with the second uneven portion and the third uneven portion. The second washer is
A fitting uneven portion having a shape to be fitted to the second uneven portion is provided on a surface of the eye joint portion in contact with the second surface,
The fixing structure of the device and the joint according to claim 8, wherein a fitting unevenness portion having a shape to be fitted to the third unevenness portion is provided on a surface in contact with the device. A hose assembly for delivering liquid to the apparatus through the hose,
Said hose,
An eye joint connected to one end of the hose;
A bolt for fixing the eye joint portion to the device by inserting the shaft portion of the bolt through the bolt hole provided in the eye joint portion and screwing the shaft portion of the bolt into a screw hole provided in the device And, and
The eye joint has a conduit communicating with the inside of the hose,
The bolt has a hollow portion communicating with the duct of the eye joint portion,
An air vent is provided on at least one of the bolt and the eye joint.
The air venting portion may be a valve member capable of releasing or closing the hollow portion or the duct to the outside, a holding portion for holding the valve member in the hollow portion or the duct, and the holding portion for the valve member. And an adjusting member capable of closing the hollow portion or the pipeline by holding it at the lower end. The holding portion is a mortar-shaped holding portion formed in the hollow portion or a mortar-shaped holding portion formed in the pipe,
The hose assembly according to claim 11, wherein the valve member is a sphere that can be held by the holding portion.   An external thread that can be screwed to an internal thread formed on the inner peripheral surface of the hollow portion or the conduit is formed on the outer periphery of the adjusting member, and the inside of the hollow portion or the conduit communicates with the outside of the adjusting member. 13. A hose assembly according to claim 11 or 12, wherein a slit is provided. A hose assembly for delivering fluid to a device through a hose, the hose assembly comprising:
The hose assembly is
Said hose,
An eye joint connected to one end of the hose;
A bolt for fixing the eye joint portion to the device by inserting the shaft portion of the bolt through the bolt hole provided in the eye joint portion and screwing the shaft portion of the bolt into a screw hole provided in the device; ,
Including a first washer disposed between the head of the bolt and the eye joint;
One or more corners are formed on the surface of the head of the bolt in contact with the first washer;
The corner portion includes a slide surface provided on the side in contact with the first washer, and a locking surface provided on the lag side in the tightening rotational direction of the bolt from the slide surface.
A hose assembly, wherein one or more first concavo-convex portions are provided on a first surface of the eye joint portion in contact with the first washer.   15. The hose assembly of claim 14, wherein the angle between the sliding surface and the locking surface at the corner is a right angle or an acute angle.   The hose assembly according to claim 14 or 15, wherein a part of the first washer is deformed to fit with the corner and the first unevenness by tightening the bolt. The first washer is
A fitting unevenness portion having a shape to be fitted to the corner portion is provided on the surface in contact with the head of the bolt,
The hose assembly according to claim 14 or 15, wherein a fitting unevenness portion having a shape to be fitted to the first unevenness portion is provided on a surface in contact with the eye joint portion.   The hose assembly according to any one of claims 11 to 17, further comprising a one-touch coupler attached to the other end of the hose. A hose assembly according to any one of claims 14-18.
A device provided with a screw hole for screwing the bolt;
Including a second washer disposed between the eye joint and the device;
One or more second concavo-convex parts are provided on the second surface of the eye joint part in contact with the second washer;
One or more third asperities are provided on the side of the device in contact with the second washer,
A fixed structure of the device and the hose assembly fixed to the device.   20. A fixing structure for the apparatus according to claim 19, wherein the part of the second washer is deformed to fit with the second uneven portion and the third uneven portion by tightening the bolt. . The second washer is
A fitting uneven portion having a shape to be fitted to the second uneven portion is provided on a surface of the eye joint portion in contact with the second surface,
The fixing structure of the device and the hose assembly according to claim 19, wherein a fitting unevenness portion having a shape to be fitted to the third unevenness portion is provided on a surface in contact with the device.