KR101315119B1 - Fitting for hydraulic hose and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a high pressure hose bracket and a manufacturing method thereof for hydraulic equipment, and more particularly, to eliminate unnecessary chip generation, to minimize the amount of processing of the raw material, to maximize the productivity, plastic deformation of the nut and shell It is an object of the present invention to provide a metal fitting for a high-pressure hose that can be permanently bonded to secure the shape deformation stress generation and corrosion resistance by bonding without breakage of the plating layer and a method of manufacturing the same. The present invention for achieving the above object is a nut member connected to the connection object; A nipple member whose one end is inserted into the nut member from one side to the other side and is not detached from the other side; And a shell member permanently coupled to the nipple member, the shell member having an assembly operation portion for fastening the hose to the connection object, and the nipple member having a channel hole pre-formed through the forging method of the nut member. Inserted from one side to the other side, but the head portion of the nipple member is assembled by inserting into one end of the nut member in a stepped manner; One side of the nipple member is inserted into the shell member having a hexagonal surface at one end thereof; Provided is a method for manufacturing a high pressure hose bracket including permanently coupling between one outer edge of the nipple member and one inner edge of the shell member.

Description

FITTING FOR HYDRAULIC HOSE AND MANUFACTURING METHOD THEREOF}

The present invention relates to a high pressure hose bracket and a manufacturing method thereof for hydraulic equipment, and more particularly, to eliminate unnecessary chip generation, to minimize the amount of processing of the raw material, to maximize the productivity, plastic deformation of the nut and shell The present invention relates to a high pressure hose bracket and a method of manufacturing the same, which can be permanently bonded to secure shape deformation stress generation and corrosion resistance by bonding without breaking the plating layer.

Generally, when a tube and a hose are connected, for example for the supply and withdrawal of working fluid in a hydraulic or pneumatic system, a so-called "fitting" (ie, bracket) is used.

As for the form of the connection bracket which concerns on one form of the prior art, the metal fitting for high pressure hoses comprised from a nut, nipple, and a shell is proposed.

1 is a perspective view showing a hose bracket according to the prior art composed of a nut, nipple and shell, Figure 2 is an exploded perspective view of a hose bracket according to the prior art composed of a nut, nipple and shell. 3A and 3B are side views and front views respectively illustrating hexagon bars for forming nipples constituting the metal fittings according to the prior art, and FIGS. 4A and 4B are views for forming the nipples constituting the fittings according to the prior art. It is a side view and a perspective view which show a forging material.

As shown in FIG. 1 and FIG. 2, the bracket for hoses of one form of the prior art is the nut 1 connected with a connection object; It is composed of a nipple (2) coupled to the nut (1) to secure the flow path and airtight, and a shell (3) for connecting the nipple and the hose.

These prior art hose brackets are applied to the bar basically in the material application, and in some cases using a pipe (pipe) or forged blank (blank).

In order to form the material of the hose bracket, as shown in Figures 3a and 3b, both the inner and outer diameter processing is required for the bar, the pipe (pipe) is required for all processing processes except hole processing.

And the blank forging (blank) can omit the outer diameter roughing process as shown in Figure 4 but the hole processing is essentially required.

Thus, in the prior art, the material for the hose bracket is formed by processing a bar, a pipe, or a forged blank. Since internal and external diameter processing or hole processing must be performed, a considerable chip is generated, and thus, environmental It also has a bad effect on the side.

In addition, since the material for forming the conventional nipple is essentially required for the hexagonal surface, there is a problem that must be accompanied by constraints when selecting the raw material.

On the other hand, Figure 5 is an explanatory view showing the operation of assembling the nut and shell in the hose bracket according to the prior art by crimping assembly method.

As shown in FIG. 5, in the hose fitting according to the prior art, the nut 1 and the shell 3 are permanently assembled by a crimping assembly method via a crimping tool 4.

Conventional hose fittings permanently fix the nut 1 and the shell 3 with the crimping tool 4, thus destroying them due to overassembly or vibration by the user or increase in internal stress of the small deformation site. There is a possibility that a phenomenon occurs and the performance of the product is degraded. In addition, in appearance, there is a problem in that the plating layer on the surface of the bracket is damaged due to crimping, thereby reducing corrosion resistance and shortening the life of the product.

Therefore, the present invention has been proposed to solve the above-described problems, and by developing and applying a material that minimizes the amount of raw material processing, it is possible to suppress unnecessary chip generation as in the prior art and at the same time improve the productivity for the high pressure hose The object is to provide a metal fitting and a method of manufacturing the same.

In addition, the present invention provides a high-pressure hose bracket and its manufacturing method which can ensure the corrosion resistance of the bracket and thereby prolong the life of the product by being able to be permanently bonded in a bonding manner without destroying the plating layer on the surface of the bracket. Has a different purpose.

Another object of the present invention is to provide a metal fitting for a high pressure hose and a method of manufacturing the same, which can suppress the occurrence of shape deformation stress by joining the nut and the shell of the metal fitting without plastic deformation.

According to a first aspect of the present invention for achieving the above objects and features, there is provided a fitting for a high pressure hose comprising a nut member, a nipple member and a shell member for communicating a hose to a connection object of an associated facility or equipment. A nut member connected to the object; A nipple member whose one end is inserted into the nut member from one side to the other side and is not detached from the other side; And a shell member permanently coupled to the nipple member and having an assembly operation part for fastening the hose to the connection object.

The nipple member and the nut member may be formed with stepped portions that are opposed to each other.

One end of the nut member may have a stepped portion protruding therein, and one end of the nipple member may have a stepped portion protruding to the outside.

The outer edge of the nipple member and the inner edge of the shell member may include a permanently coupled portion of the mutual locking method.

The permanent coupling portion is a locking coupling portion protruding outward from the outer edge of the nipple member; A locking engagement portion which protrudes inward from one end of the shell member and contacts the locking engagement portion; And a deformation protrusion through which a portion of the nipple member is forcibly deformed to protrude outward from the rear of the locking coupling portion of the shell member.

It is preferable that the assembly operation portion is formed on the outer edge corresponding to the internal edge where the locking engagement portion of the shell member is formed, and the assembly operation portion is a hexagonal surface.

According to a second aspect of the present invention, there is provided a method for manufacturing a high pressure hose bracket including a nut member, a nipple member, and a shell member so as to communicate a hose with a connection object of a related facility or equipment. Inserting the formed nipple member from one side of the nut member to the other side, wherein the head of the nipple member is inserted into one end of the nut member in a stepped manner to be assembled; One side of the nipple member is inserted into the shell member having a hexagonal surface at one end thereof; Provided is a method for manufacturing a high pressure hose bracket including permanently coupling between one outer edge of the nipple member and one inner edge of the shell member.

Permanent coupling between the nipple member and the shell member may be coupled by deforming a portion of the nipple member on the other side facing the one side that is stepped to protrude toward the shell member side.

The deformation of the other side of the nipple member for permanent engagement between the nipple member and the shell member inserts a particular tool into the interior of the nipple member and presses a portion of the nipple member outward so that a portion of the other side of the nipple member moves outward. Forced deformation can be combined.

According to the high pressure hose bracket and the manufacturing method thereof according to the present invention provides the following effects.

First, the present invention can suppress the generation of unnecessary chips as in the prior art and improve productivity by developing and applying a material that minimizes the processing amount of raw materials.

Secondly, the present invention can ensure the corrosion resistance of the bracket to ensure a permanent bond in the bonding method without destroying the plating layer on the surface of the bracket, thereby extending the life of the product.

Third, the present invention can suppress the shape deformation stress by combining the nut and the shell of the bracket without plastic deformation can ensure the reliability of the product.

1 is a perspective view showing a metal fitting for a hose according to the prior art consisting of a nut, nipple and shell.
Figure 2 is an exploded perspective view of the bracket for the hose according to the prior art consisting of a nut, nipple and shell.
Figure 3a is a side view showing a hexagonal bar for forming the nipple constituting the bracket according to the prior art.
3B is a front view showing a hexagonal bar for forming a nipple constituting a metal fitting according to the prior art.
4A is a side view showing a forged material for forming a nipple constituting a metal fitting according to the prior art;
4B is a perspective view showing a forging material for forming a nipple constituting a metal fitting according to the prior art;
Figure 5 is an explanatory view showing the operation of assembling the nut and the shell in the hose bracket according to the prior art by crimping assembly method.
Figure 6 is a side view showing the configuration of the bracket for high pressure hose according to the present invention.
Figure 7 is a side cross-sectional view showing the configuration of the high pressure hose bracket according to the present invention.
8 is an exploded perspective view showing the configuration of the high pressure hose bracket according to the present invention.
9 is a perspective view showing a shell member constituting the high pressure hose bracket according to the present invention.
10A and 10B are a side view and a perspective view respectively showing raw materials of the nipple member constituting the high pressure hose bracket according to the present invention.
11A and 11B are views showing how the nut member and the nipple member are connected to each other in the high pressure hose bracket according to the present invention, respectively, FIG. .
Fig. 12A is a side sectional view showing a state before the shell member of the high pressure hose bracket according to the present invention is permanently coupled to the nipple member.
Fig. 12B is a side sectional view showing a shell member of the high pressure hose bracket according to the present invention permanently coupled to the nipple member.

Further objects, features and advantages of the present invention will become more apparent from the following detailed description and the accompanying drawings.

Before describing the present invention in detail, it is to be understood that the present invention is capable of various modifications and various embodiments, and the examples described below and illustrated in the drawings are intended to limit the invention to specific embodiments It is to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Also, the terms " part, "" unit," " module, "and the like, which are described in the specification, refer to a unit for processing at least one function or operation, Software. ≪ / RTI >

In the following description of the present invention with reference to the accompanying drawings, the same components are denoted by the same reference numerals regardless of the reference numerals, and redundant explanations thereof will be omitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Hereinafter, a configuration of a high pressure hose bracket according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 6 is a side view showing the configuration of the high pressure hose bracket according to the present invention, Figure 7 is a side cross-sectional view showing the configuration of the high pressure hose bracket according to the invention, Figure 8 is a configuration of the high pressure hose bracket according to the present invention It is an exploded perspective view which shows. 9 is a perspective view showing a shell member constituting the high pressure hose bracket according to the present invention.

As shown in Figures 6 to 9, the high pressure hose bracket according to the present invention is a bracket for connecting the hose to the connection object of the associated equipment or equipment, the nut member (100) connected to the connection object (nut member) ; A nipple member 200 having one end inserted into the nut member 100 from the one side to the other side and provided so as not to fall off the other side; And a shell member 300 that is permanently coupled to the nipple member 200 and has an assembly operation part 310 for fastening the hose to the connection object.

10A and 10B are side and perspective views respectively showing raw materials of the nipple member constituting the high pressure hose bracket according to the present invention. As shown in FIG. 10, the raw material of the nipple member 200 does not require a hexagonal surface for fastening a hose to a connection object as in the prior art, and thus uses a forged material optimized for internal and external diameter processing and hole processing. It is possible to realize the optimum nipple shape, and to minimize the amount of processing of the raw material. As a result, chip generation can be minimized and productivity can be improved. As will be described later, an assembly operation portion (for example, a hexagonal surface) for fastening the hose to the connection object is formed in the shell member 300.

11A and 11B are views showing how the nut member and the nipple member are connected to each other in the high pressure hose bracket according to the present invention, respectively, and FIG. 11A shows a pre-connection state and FIG. 11B shows a post-connection state. to be.

As shown in FIGS. 11A and 11B, the nut member 100 and the nipple member 200 are connected in a so-called slip on type.

In other words, the nut member 100 is inserted into the nipple member 200 so that the nut member 100 is not detached from the other side, and the stepped parts 110 and 210 are formed to face each other and are connected in a stepped manner.

Specifically, one end portion 110 protruding therein is formed on one inner surface of the nut member 100. The one end portion 210 of the nipple member 200 is formed to protrude to the outside. Each stepped portion 210 may be formed to protrude, for example, in an annular shape, and as described above, the two stepped portions may be formed to be caught to each other so as not to be dropped, but is not limited thereto.

Accordingly, the nipple member 200 is inserted from one side of the nut member 100 to the other side, and the stepped portion 210 of the nipple member 200 is the nut as shown by the dotted circle in FIG. 11B at the final insertion position. By engaging the step portion 110 of the member 100, the assembly of the nipple member 200 and the nut member 100 is completed in a state where the other side does not fall out.

Next, a permanent coupling method between the nipple member and the shell member of the high pressure hose bracket according to the present invention will be described with reference to FIGS. 12A and 12B. 12A is a side cross-sectional view showing a state before the shell member of the high pressure hose bracket according to the present invention is permanently coupled to the nipple member, and FIG. 12B is a shell member of the high pressure hose bracket according to the present invention permanently coupled to the nipple member. It is a side sectional drawing which shows the state.

The outer edge of the nipple member 200 and the inner edge of the shell member 300 include a permanently coupled portion of the locking method. That is, locking coupling parts 220, 230, and 320 are formed at the outer edge of the nipple member 200 and the inner edge of the shell member 300 to be locked.

Specifically, the locking coupling portion 220 protruding outward (to the shell member side) is formed at the outer edge of the nipple member 200, and protrudes inward (to the nipple member side) at one inner edge of the shell member 200. A locking coupling part 320 is formed to be in contact with the locking coupling part 220, and a portion of the nipple member 200 is protruded outwardly (to the nipple member side) from the rear of the locking coupling part 320. Deformation protrusion 230 is included.

In other words, as shown in FIG. 12A, the nipple member 200 is inserted into the shell member 300, wherein the locking coupling portion 220 of the nipple member 200 contacts the locking coupling portion 320 of the shell member 300. In the state of the position, as shown in Figure 12 using a specially designed tool in the direction of the horizontal arrow, and through this special tool a portion of the inner and outer diameters of the nipple member 200 to the outside as shown by the vertical arrow ( To the shell member 300 to be forced to the shell member 300.

As a result, the locking engagement portion 320 of the shell member 300 is positioned between the locking engagement portion 220 of the nipple member 200 and the deformed protrusion 230 that is forcibly deformed, and thus the shell member 300 and the nipple member ( 200) prevent separation and firmly permanent coupling.

Here, due to the characteristics of the high-pressure hydraulic pipe, the internal pressure acts uniformly on the inner diameter of the nipple member 200, and the corresponding deformed portion (deformation protrusion 230) of the nipple member 200 is designed with the hydraulic pressure continuously applied. Coupling force (fixing force) increases in proportion to time since it coincides with the direction of force applied to implement the shape.

The shell member 300 is a means for operating to provide a fastening force for assembling and fixing the hose to the connection object is provided with an assembly operation portion 310 of the hexagonal surface at one end thereof.

Here, the locking locking portion 320 of the shell member 300 is preferably formed on the inner edge corresponding to the outer edge on which the hexagonal surface 310, which is the assembly operation portion, is formed.

Therefore, as the hexagonal surface is formed on the nipple member as in the related art, it is accompanied with constraints of raw materials, shape, length, etc., which has a significant effect on the weight increase of piping parts and equipment, through the forging method as in the present invention. By forming the hexagonal assembling operation part 310 in the shell member 300, productivity and a bracket shape can be simplified, and economical efficiency can be improved by this.

In other words, the present invention is not constituted by the nipple member, but the assembly operation portion in the shell member as in the prior art, so that the outer side of the nipple member is not a crimping method of assembling components by inducing a shape change caused by external force. A shape that can be inserted into a member and assembled can be implemented. This does not generate internal stress due to plastic change, and maximizes the protection of the plating layer of the metal fittings and the contact surface of the nut member and the nipple member to maximize the assemblability and the bonding force at the time of coupling with the counterpart.

Next, the manufacturing method of the metal fitting for high pressure hoses which concerns on this invention is demonstrated. In the following description of the production method, the same or duplicate content as described above will be omitted or simplified.

The manufacturing method of the high pressure hose bracket according to the present invention is a manufacturing method of the high pressure hose bracket including the nut member, the nipple member and the shell member, the one side of the nut member to the nipple member pre-formed with a flow path hole through the forging method Inserted into the other side from the head, and the head of the nipple member is assembled by inserting it into the end of the nut member in a stepped manner; One side of the nipple member is inserted into the shell member is formed to form a hexagonal surface at one end stepped; And permanently coupling between one outer edge of the nipple member and one inner edge of the shell member.

Permanent coupling between the nipple member and the shell member includes permanently coupling the nipple member and the shell member by deforming a portion of the nipple member on the other side facing the stepped side to protrude toward the shell member side.

The deformation of the other side of the nipple member for permanent engagement between the nipple member and the shell member is such that a specially designed tool is inserted into the nipple member and pressed outward so that a portion of the other side of the nipple member protrudes outward.

The high pressure hose bracket and the manufacturing method thereof according to the present invention as described above can achieve a high productivity by implementing a hole processing through the forging process in the nipple member and the shell member can reduce the time and cost required for processing, The problem of various defects due to machining can be solved.

In addition, the present invention is to provide the assembly operation portion for assembling and fixing the connection object and the hose, that is, the hexagonal surface to the shell member instead of the nipple member to minimize the product weight and volume without functional degradation or inconvenience in use. And the efficiency is increased when applied to the driving equipment.

In addition, the present invention by applying the locking method instead of the existing crimping method when assembling the shell member and the nipple member at the same time, problems such as destruction of the plating layer of the metal fittings, deterioration of durability due to the increase of plastic deformation stress of the shell member, process addition, etc. By solving this problem, it is possible to provide the best quality products to users in corrosion resistance and fatigue resistance.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes within the scope not departing from the technical spirit of the present invention are possible in the art. It will be evident to those who have knowledge of.

100: nut member
110: stepped portion
200: nipple member
210:
220: locking engagement portion (for nipple member)
230: deformation protrusion
300: shell member
310: assembly operation portion
320: locking engagement portion (for shell member)

Claims (9)

A metal fitting for a high pressure hose comprising a nut member, a nipple member, and a shell member for communicating a hose to a connection object of an associated facility or equipment.
A nut member connected to the connection object; A nipple member whose one end is inserted into the nut member from one side to the other side and is not detached from the other side; And a shell member permanently coupled to the nipple member and having an assembly operation portion for fastening the hose to the connection object.
The permanent coupling of the nipple member and the shell member is the rear of the locking coupling portion of the shell member in contact with the locking coupling portion protruding outward from the outer edge of the shell member and the locking coupling portion protruding inward from the inner edge of the nipple member. By forcing a portion of the nipple member outward to form a deformation protrusion,
The outer edge corresponding to the inner edge where the locking engagement portion of the shell member is formed is integrally formed with an assembly operation for fastening the hose to the connection object
Bracket for high pressure hose.
The method of claim 1,
The nipple member and the nut member are each formed with stepped portions opposed to each other.
Bracket for high pressure hose.
3. The method according to claim 1 or 2,
On one inner surface of the nut member is formed a stepped portion protruding therein,
On one outer surface of the nipple member is formed a stepped portion protruding to the outside
Bracket for high pressure hose.
delete delete 3. The method according to claim 1 or 2,
The assembly operation portion is a hexagonal surface
Bracket for high pressure hose. delete delete delete

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