JP3070045U - Double-way open / close joint for hydraulic piping - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a wiping property of a fluid or the like adhering at the time of separating a female joint and a male joint, and to improve a joint operability for easily aligning the two joints. Provided is a two-way open / close joint for hydraulic piping. SOLUTION: When the female joint 10 and the male joint 11 are separated,
Inner sleeve 3
And the side end surface of the tubular valve 4 is recessed to such an extent that the adhered fluid can be easily wiped off, and a taper 13 is provided at a peripheral end portion of the female joint 10 which is in contact with the inner sleeve 3.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention consists of a female joint and a male joint connected to the female joint. The female joint and the male joint communicate with each other with the internal hydraulic flow paths open when connected, and the hydraulic flow paths when the joints are separated. The present invention relates to a two-way open / close joint for hydraulic piping that is closed.

[0002]

[Prior art]

 Conventionally, most of the two-way open / close joints mainly for high-pressure hydraulic piping have a structure shown in the drawings of FIGS. 5 to 7, and the connecting end of one female joint 10 is connected to the other male joint. 11 has a concave portion 12 into which the coupling end portion fits, and the concave portion 12 plays a role of alignment when interconnected.

[0005] That is, the male body 5 of the coupling end of the male joint 11 is fitted into the coupling end of the female body 1 of the female joint 10 of the hydraulic piping joint shown in FIGS. 5, 6 and 7. When the two joints shown in FIG. 6 are to be connected from the separated state of the two joints shown in FIG. 5, alignment is easily performed at the position indicated by the arrow P. In this state, the male joint 11 is connected to the female joint 10 as shown in FIG. 7, so that, in the separated state, the poppet valve 16 that closes the hydraulic pipe on the inner periphery of the connection end of the female body 1 by the spring material is used. The hydraulic pipes on the inner periphery of the connection end of the body 5 are pressed against the poppet valve 16 closed by the spring material, and the respective spring materials are compressed to open the respective hydraulic pipes in the female joint 10 and the male joint 11. Communication is established.

[0004] That is, in the female joint 10 and the male joint 11, both poppet valves 16 open and close by sliding the shaft of each poppet valve 16 around the circumference of each poppet guide 14. 7, the holes 15 formed on the outer periphery of each poppet valve 16 communicate with each other, and the poppet valve 16 is opened.

However, as shown in FIG. 5, in a hydraulic piping joint having an uneven surface at the joint between the female joint 10 and the male joint 11, oil spills when the joint is separated, and fluid adhering to the concave joint portion is not removed. It is difficult to wipe off, and the adhered fluid cannot be completely removed to all corners of the joint surface, resulting in use. If the fluid adhering to the joint at the time of separation is left unattended, dust, dust, foreign matter, etc. will be adsorbed, and if the joint separation is used repeatedly, dust, foreign matter, dust, etc. will penetrate into the seal inside the joint However, this may cause damage to the sealing material and shorten the product life of the joint body.

In order to solve the above-mentioned problems, the female joint 10 and the male joint 11 are provided in the same manner as described above, and the separated state shown in FIG. 8, the alignment state shown in FIG. Conventionally, a hydraulic piping joint having a structure showing a state at the time of connection has been used.

In this joint, the tubular valve 4 is fixed to the female body 1 at the female joint 10, and the inner sleeve 3 slides on the outer periphery of the tubular valve 4 so that the four holes 15 of the tuber valve are formed. The male joint 11 has a structure in which the poppet valve 6 slides on the inner periphery of the male body 5 and the four holes 15 of the poppet valve 6 open and close. The joint surface on both sides of the joint has no unevenness, and a flat joint surface is used to easily wipe off the fluid adhering at the time of separation with a glove or rag once. In this case, long life can be expected by having the user wipe the coupling surface at any time during separation.

That is, in the separated state of the female joint 10, the coupling side ends of all parts of the female body 1, the sleeve 2, the inner sleeve 3, and the tubular valve 4 are aligned with the coupling surface indicated by an arrow X, and the coupling surface X In addition, even when the male joint 11 is separated, the coupling side ends of the male body 5 and the poppet valve 6 are aligned with the coupling surface indicated by the arrow Y, and the coupling surface Y can also be retained in a flat state. It is easy to wipe off the adhered fluid.

However, in the joint having the concave portion 12 on one side of the coupling surface as described in FIG. 5, the outer diameter of the coupling portion of the male joint 11 fits into the inner diameter of the concave portion 12 of the female joint 10. Thus, it is possible to perform alignment at the position indicated by the arrow P in FIG. 6 at the time of connection. However, in the joint of FIG. 8 having a structure in which the joint surfaces of both joints are flat, the position at the position of the arrow P in FIG. At the time of positioning, the joint surfaces of the female joint 10 and the male joint 11 are flattened, and there is no dent for alignment, that is, no step, so that the alignment at the time of joining is visually checked. This has to be performed, and there is a problem that the joint operation performance is inferior to a joint having a structure having a recess on one side of the joint surface.

[0010]

[Problems to be solved by the invention]

 The present invention relates mainly to a joint surface of a two-way open / close joint for a hydraulic pipe mainly for high pressure in which a joint end of a male joint is fitted into an inner diameter portion of a female body at a joint end of a female joint. A two-way open / close joint for hydraulic piping that can improve the wiping properties of fluids and the like adhering during separation and improve the operability to easily align the female joint and male joint when they are joined. provide.

[0011]

[Means for Solving the Problems]

 The two-way open / close joint for hydraulic piping according to the present invention has a tube fixed to the female joint with the joint end of the male body of the male joint fitted and joined to the female body of the joint end of the female joint. The inner sleeve slidably inserted through the blur valve is pushed into the male body of the male joint, the flow path of the tubular valve of the female joint is opened, and the poppet slidably installed in the male joint. The valve is pushed into the tubular valve fixed to the female joint, the flow passage opens, and the two joints are open / closed joints for hydraulic piping where the joints communicate with each other. The adhering fluid can be easily wiped off, the coupling surface of the female joint is recessed from the coupling surface side end surface of the female body to the inner sleeve and the side end surface of the tubular valve to the extent that the adhering fluid can be easily wiped off, and the female body The inner three It consists of providing a tapered peripheral edge portion in contact with.

[0012]

[Embodiment of the invention]

 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1, 2 and 3 show a two-way open / close joint for hydraulic piping in one embodiment in a state of separation and a state of alignment. And a state at the time of connection, which is a joint having substantially the same configuration and function as the joint of the conventional example shown in FIGS. 8, 9 and 10, and the same parts are denoted by the same reference numerals. Indicated by.

That is, when the female joint 10 and the male joint 11 are coupled, the coupling end of the male body 5 of the male joint 11 is fitted to the female body 1 at the coupling end of the female joint 10. In the coupled state, the inner sleeve 3 slidably provided through the tubular valve 4 fixed to the female joint 10 is pushed into the male body 5 of the male joint 11 and the inner sleeve 3 of the tubular valve 4 of the female joint 10 is The four holes 15 are opened, and the poppet valve 6 slidably provided in the male joint 11 is pushed into the tubular valve 4 fixed to the female joint 10, and the four holes 15 of the poppet valve 6 are opened. Is opened so that the respective flow paths of the two joints 10 and 11 communicate with each other. On the other hand, when the female joint 10 and the male joint 11 are separated from each other, as shown in FIG. Hydraulic passage of hole 15 of 4 Is closed by the inner peripheral surface of the inner sleeve 3, and the hydraulic passage of the hole 15 of the poppet valve 6 of the male joint 11 is also closed by the inner peripheral surface of the male body 5, and the oil is sealed by the seal rings provided respectively. There are no leaks.

Therefore, in the present invention, when the female joint 10 and the male joint 11 are separated from each other, as shown in FIG. 1, the coupling joint side end surface of the male joint 11 is flat and the adhered fluid is easily wiped off. As shown in FIG. 1 and FIG. 4 of an enlarged sectional view thereof, the coupling surface of the female joint 10 has a stepped surface between the coupling sleeve X of the female body 1 and the side end surfaces of the inner sleeve 3 and the tubular valve 4. H is recessed, and a taper 13 having an angle R is provided at a peripheral end portion of the female body 1 which is in contact with the inner sleeve 3, thereby facilitating alignment at a position indicated by an arrow P in FIG. 2. .

As described above, the end surfaces of the inner sleeve 3 and the tubular valve 4 are recessed from the end surface of the female body 1 by the step H, and at the same time, the step formed thereby comes into contact with the inner sleeve 3 of the female body 1. The taper 13 is chamfered at the peripheral end. The step H in this case satisfies both the performance of facilitating the wiping of the fluid adhering to the joint surface at the time of separation and facilitating the alignment at the time of joint coupling. In this case, it is desirable that the angle R be around 1 mm, and the angle R of the taper 13 at the peripheral end of the female body in contact with the inner sleeve be around 45 °. For example, if the angle R of the taper 13 is set to about 45 °, the angle between the taper 13 and the end surface of the inner sleeve 3 becomes an obtuse angle of 90 ° + R. The results of the evaluation test have confirmed that the wiping performance of the fluid adhering to the portion is almost the same as the case where the bonding surface X is flat as in the conventional example shown in FIG.

[0016]

[Effect of the invention]

 In the two-way open / close joint for hydraulic piping according to the present invention described above, a recess is formed in the joint surface of the female joint, which is formed by a step required for positioning at the time of joining, so that the joint surface of the conventional female joint is recessed. A joint operation performance equivalent to a certain joint can be obtained.

[0017] Further, with respect to the wiping performance of the adhered fluid due to the step, by providing an appropriate step and a taper having an appropriate angle at the step, the same wiping performance as that of a joint having a flat coupling surface is maintained. It becomes possible.

As described above, while maintaining the performance of easily wiping off the fluid adhering to the coupling surface at the time of separation, the coupling operability for easily aligning the female joint and the male joint is good, and it is used for a long life. A possible two-way open / close joint for high-pressure hydraulic piping can be provided.

[Brief description of the drawings]

FIG. 1 is a side view of a partial cross-section of a two-way open / close joint for hydraulic piping according to an embodiment of the present invention in a separated state.

FIG. 2 is a side view of a partial cross section of the joint of FIG. 1 in an alignment state.

FIG. 3 is a side view of a partial cross section in a state at the time of coupling of the joint of FIG. 2;

FIG. 4 is an enlarged side sectional view of a main part of a coupling end face of the female joint of FIG. 1;

FIG. 5 is a side view of a partial cross section of a conventional joint in a separated state.

FIG. 6 is a side view of a partial cross section of the joint of FIG. 5 in an alignment state.

7 is a side view of a partial cross section in a state when the joint of FIG. 6 is connected.

FIG. 8 is a side view of a partial cross section of another conventional joint in a separated state.

9 is a side view of a partial cross section of the joint of FIG. 8 in an alignment state.

FIG. 10 is a side view of a partial cross section in a state at the time of coupling of the joint of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Female body 3 Inner sleeve 4 Tubular valve 5 Male body 6 Poppet valve 10 Female joint 11 Male joint 13 Taper

Claims (1)

[Utility model registration claims] A slidable via a tubular valve fixed to a female joint in a state in which the coupling end of the male body of the male coupling is fitted and coupled to the female body of the coupling end of the female coupling. Inner sleeve is pushed into the male body of the male joint, the flow path of the tubular valve of the female joint opens,
A poppet valve slidably installed in the male joint is pushed into the tubular valve fixed to the female joint to open the flow path, and this is a two-way open / close joint for hydraulic piping in which both joints communicate. The mating surface of the male joint is flat, and the adhering fluid can be easily wiped off.The mating surface of the female joint is easier for the adhering fluid on the inner sleeve and tubular valve side end surface than the mating surface of the female body. Hydraulic piping double-way open / close joint that is recessed to the extent that it can be wiped off and has a tapered peripheral end that contacts the inner sleeve of the female body.