JP3047232B1 - Hose connector - Google Patents

Abstract

A hose connector having a simple configuration and a bendable hose connector is provided. SOLUTION: A joint (3) connected to a joint body (2) is formed with a socket (17) having a spherical inner surface and an outer surface, and an opening groove (21) extending laterally in the socket (17). To form The connecting shaft (6) has a spherical spherical head (11) fitted on the inner surface of the socket (17) at one end, and a small diameter neck (12) at the other end. The neck (12) projects outward through the opening groove (21), and a hose connecting portion (5) is attached to the neck. A cover (24) is provided between the socket (17) and the hose connection part (5) so as to cover the opening groove (21).
Is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air hose, a gas hose for welding and fusing, and other hose connecting devices, and more particularly to a hose which can be freely bent at a joint portion. It relates to a connection device.

[0002]

2. Description of the Related Art An air hose connecting various work tools and an air compressor, a gas hose connecting a torch such as welding, and a gas supply source, and other hoses connect the work tool and the hose. In some cases, the workability may be good if the joint part of the hose or the joint part of the hose is configured to be bent. As an example of such a bendable hose connection device, a connecting shaft is provided between the joint body and the hose connecting portion, and spherical protrusions are formed at both ends of the connection shaft, and the protrusion is formed as described above. Joint body and ho
The plug is inserted into each of the cylindrical receiving holes from the opening end of the connecting portion to seal the protruding portion inward, and a plurality of small receiving holes are provided between the periphery of the protruding portion on the opening end side and the inner wall of the receiving hole. There is known a hose connecting device in which the protrusion is packed to prevent the protrusion from coming off. In this hose connecting device, the connecting portion between the joint body and the connecting shaft and the connecting shaft are connected to the connecting shaft until the connecting shaft hits the opening edge of the cylindrical receiving hole.
It can be tilted at two points of the connecting portion of the connecting portion.

However, the hose connecting device having the above structure is complicated and troublesome to manufacture, and when the receiving ball is worn, the fitting between the raised portion and each receiving hole is loosened and the seal is insufficient. Become air
Leaks may occur. Also, when bending, if the connecting shaft hits the opening edge of the receiving hole, it can not be bent any more, so the bending angle is small, and when trying to increase the inner diameter of the receiving hole to increase this angle, The receiving ball may fall off.

[0004]

The problem to be solved by the present invention is as follows.
It is an object of the present invention to provide a hose connector which can be easily assembled with a simple configuration, has a large bending angle, and has a sufficient sealing property.

It is another object of the present invention to provide a hose connecting device in which the bent portion has a good appearance and moves smoothly.

[0006]

According to the present invention, there is provided a hose connecting device for connecting a hose and a joint body, wherein the hose connecting device includes a joint connecting portion connected to the joint body and a hose. And a connecting shaft for connecting the hose connecting portion to the hose connecting portion. The connecting shaft is formed at an end of the flow passage penetrating in the axial direction and the end of the joint connecting portion. The outer surface has a spherical spherical head and a small-diameter neck formed on the hose connecting portion side of the spherical head, and the joint connecting portion has a spherical inner surface so as to fit the spherical head of the connecting shaft. A socket having an outer surface formed in a spherical shape, a seal piece provided between the inner surface of the socket and the spherical head, a neck portion of the connection shaft being inserted into the socket wall, and a connection portion of the joint being formed. Opening extending sideways so that the connecting shaft can be tilted in a direction crossing the axis of Ho, characterized in that a groove -
A connection device is provided, and the above-mentioned problem is solved.

Further, according to the present invention, there is provided the hose connecting device, wherein a cover is provided between the hose connecting portion and the socket so as to cover the opening groove and slidably contact an outer surface of the socket. Thus, the above problems are solved.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
A joint connecting part (3) connected to the joint body (2), a hose connecting part (5) connecting the hose (4), and the joint connecting part (3) and the hose connecting part. A connection shaft (6) for connecting (5) is provided. The joint body (2) is provided with an appropriate valve mechanism (not shown), and the hose connection part (5) is provided with a flow path (7) and inserted into the connection cylinder (8). A fastening nut (9) for fastening the hose (4) is attached. An appropriate sleeve (not shown) or the like may be provided between the tightening nut and the outer surface of the hose so as to prevent the hose from coming off.

The connecting shaft (6) has a flow path (10) penetrating in the axial direction, and a spherical head having a spherical outer surface as shown in FIG. (11) is formed. A small-diameter neck (12) is formed on the hose connecting portion side of the spherical head (11), and a ball (13) for a stopper described later is inserted into the neck (12). A shaft (16) to be inserted into the groove (14) and the receiving hole (15) of the hose connection part (5) is formed.

The coupling (3) includes a socket (17).
Are formed. The socket (17) is a substantially hemispherical socket having a spherical inner surface (18) and a spherical outer surface (19) for fitting the spherical head (11) of the connection shaft (6). It has a wall (20). On the socket wall (20),
As shown in FIG. 3, the connecting shaft (6) is inserted sideways so that the neck (12) of the connecting shaft (6) can be inserted and the connecting shaft (6) can be inclined in a direction crossing the axis of the joint connecting portion (3). An opening groove (21) that spreads out is formed. In the figure, the opening groove (21)
The length of the opening is such that the axis of the connecting shaft (6) is
(17) The inner surface is provided to such an extent that it can be inclined by about 45 ° with respect to the axis passing through the center of the spherical surface, but this length can be appropriately determined as desired.

The inner surface of the socket (17) and the spherical head (11)
Seal pieces (22) are provided between the outer surfaces of the seal pieces. The sheath
The O-ring or other suitable sealing piece can be used as the sealing piece (22), but it is preferable to use a socket (17) as shown in the figure.
The V-packing is inserted into the annular groove (23) formed in the above. At this time, as shown in FIG. 4, the V packing (sealing piece) (22) is slightly smaller (a) than the perpendicular (c) passing through the center of the spherical surface of the inner surface of the socket (17). ). If you do so, the spherical head (11)
Alternatively, even if the inner surface of the socket (17) is worn due to use and the fitting between the spherical head (11) and the inner surface of the socket is loosened, the V-packing (22) can reliably seal. .

The hose connection part (5) and the socket (1)
Between (7), the socket (17) covers the opening groove (21).
A cover (24) is provided which is in sliding contact with the outer surface (19). The cover (24) has a spherical sliding contact surface (25) on one side along the outer surface of the socket (17), and has an engagement edge (26) at the other end. Connect the mating edge (26) to the holding hole of the hose connection part (5).
By engaging with (27), it moves together with the hose connection part (5). The cover (24) can be made of a metal material, a ceramic material, or the like, but in the figure, it is made of a plastic material having excellent wear resistance and is appropriately colored to identify the type of the hose. The type of gas flowing through the hose can be identified.

In order to assemble each of the above-mentioned members, a connecting shaft is installed from the left side of the socket (17) of the joint connecting portion (3) in which the V packing (22) is attached to the annular groove (23) in FIG. (6)
The neck (12) is projected rightward through the opening groove (21), and the shaft (16) formed at the end of the neck (12) is connected to the hose with the cover (24) attached. Receiving hole (15) for connection part (5)
Insert Then, a ball (13) is inserted through a hole (28) formed in the hose connection portion (5), and falls into a receiving groove (14) provided in the neck portion (12). 13) is engaged between the receiving groove (14) and the hose connecting portion (5) to prevent the hose from coming off. The hole (28) is then closed with a set screw (29) or the like. The hose connection part (5) is provided with an O-ring (30) so as to seal the shaft part (16). After assembling in this manner, the joint connection part (3) is screwed (3) to the joint body (2).
1) Do it.

The hose connector (1) assembled as described above has a neck portion (12) of a connecting shaft (6) as shown in FIG.
The hose connection part (5) can be bent within a range in which the hose connection part (5) can move in the opening groove (21) formed in the socket (17), and the hose connection part (6) is centered on the connection shaft (6). The part (5) can be rotated.

[0015]

According to the present invention, the joint connecting portion connected to the joint main body, the hose connecting portion connecting the hose, and the joint connecting portion and the hose connecting portion are connected. In a hose connecting tool having a connecting shaft to be connected, a spherical head having a spherical outer surface is provided at an end of the connecting shaft having a flow path penetrating in the axial direction at a joint connecting portion side, and the hose connecting device is connected to the hose. A small-diameter neck portion is formed on the portion side, a socket having a spherical inner surface for fitting the spherical head of the connection shaft is formed in a joint connecting portion connected to the joint body, and an outer surface of the socket is also formed in a spherical shape. ,
A sealing piece is provided between the inner surface of the socket and the spherical head, and the connecting shaft can be inclined in a direction in which the neck of the connecting shaft is inserted into the socket wall and crosses the axis of the joint connecting portion. Since the opening groove extending to the side is formed, the spherical head of the connecting shaft is inserted into the socket of the joint connecting portion to assemble the above members, and the hose connection is made to the neck of the connecting head projecting from the opening groove of the socket. Can be easily assembled simply by connecting the connecting portions, and the connecting shaft can be freely moved within the opening groove formed in the socket. Therefore, the bending angle of the hose connecting portion can be increased, and V If a seal piece such as packing is provided with a small amount of deviation from the center of the spherical surface of the socket toward the joint body, even if the spherical head slightly plays on the inner surface of the socket, air leakage will not occur. When a cover is provided between the socket and the hose connection portion, the opening groove formed in the socket can be covered, and foreign matter and the like can be prevented from entering the opening groove. It is possible and the appearance is good.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view of a connecting shaft.

FIG. 3 is a perspective view of a joint connecting portion.

FIG. 4 is an explanatory diagram showing a relationship between a seal piece and a spherical head.

FIG. 5 is a side view in which a part of a bent state is sectioned.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 hose connection tool 2 joint body 3 joint connection part 4 hose 5 hose connection part 6 connection shaft 11 spherical head
12 Neck 17 Socket 21 Opening groove 24 Cover

Claims (4)

(57) [Claims] 1. A hose connecting device for connecting a hose and a joint body, wherein the hose connecting device includes a joint connecting portion connected to the joint body, a hose connecting portion for connecting the hose, and the hose connecting portion. A connection shaft for connecting the joint connection portion and the hose connection portion, wherein the connection shaft has a flow path penetrating in the axial direction and a spherical head having a spherical outer surface formed at an end of the joint connection portion side; The spherical head has a small-diameter neck formed on the hose connecting portion side, and the joint connecting portion has a spherical inner surface and a spherical outer surface for fitting the spherical head of the connecting shaft. A socket between the inner surface of the socket and the spherical head;
And a laterally extending opening groove formed in the socket wall so that the neck of the connecting shaft can be inserted into the socket wall and the connecting shaft can be inclined in a direction crossing the axis of the joint connecting portion. A hose connecting tool. 2. The hose connecting device according to claim 1, wherein a cover is provided between said hose connecting portion and said socket so as to cover said opening groove and slidably contact an outer surface of said socket. 3. The hose connector according to claim 1, wherein the seal piece is a V-packing, and is provided at a position deviated from the center of the spherical surface of the socket toward the joint body. 4. The hose connector according to claim 2, wherein said cover is made of a plastic material.