JPH031678Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a flexible pipe or hose connection device, and particularly relates to a hose or flexible pipe connection device for hydraulic machinery or equipment used in construction machinery and the like.

Conventionally, hydraulic hoses or flexible pipes for hydraulic machinery or equipment used in construction machinery, etc. have been used by arranging multiple hoses or flexible pipes in parallel, but the operating conditions of construction machinery are extremely harsh. Therefore, the hydraulic hose or flexible pipe may be damaged or
In addition, it has the disadvantage that it is likely to be cut due to extremely strong external force.

In addition, since high hydraulic pressure is required, it is necessary to have a relatively large ratio of the inner and outer diameters of the hoses or flexible tubes, but multiple hoses or tubes installed in parallel can withstand the harsh conditions of construction machinery. Under the conditions of use, they swing in unexpected directions and become entangled with each other.
There was a risk that the oil flow would be restricted or, in the worst case, the oil flow could be blocked.

The present invention aims to solve the above problem.

Next, a specific configuration for achieving the above object will be explained with reference to the drawings. The convex joint part 6 has a male threaded part formed on the outer circumference of the tip and a female threaded part formed on the inner circumference of the tip. A joint part consisting of a combined body with a concave joint part 7, and a flexible pipe or hose connected to a flexible pipe or hose connection part provided with an end of each joint part of the joint part. In a flexible pipe or hose connection device, the convex joint part 6 and the concave joint part 7 are each drilled in the center to form a center hole, and the male thread part and the female thread part of the joint part are inserted at positions outside the center hole. A plurality of annular deep groove holes for connecting flexible tubes or hoses are formed concentrically with respect to the center hole on the opposite end surface of the tube, and the ends of the flexible tubes or hoses are mounted in each deep groove hole. The large diameter hose 2, 2' structure and the small diameter hose 1, which are flexible pipes or hoses that are connected to the joint part so as to be inserted and fixed so that they can also function as seals 4, 4'.
1' A large number of through holes are bored in the main body portion of the joint section located between the structure and the center hole of the joint section, and from the tip of the male thread of the convex joint section 6, By forming a planar raised portion protruding toward the front of the center portion, and screwing the female screw portion of the concave joint portion 7 into the male screw portion of the convex joint portion 6, A front end opening of a center hole that is in close contact with a concave recess formed from the rear end of the female thread of the concave joint 7 toward the rear of the center, and that is bored through the center of the convex joint 6. A cutout is provided at the inner side of the tip of the cylindrical protrusion formed around the cylindrical protrusion, and the front end opening of the central hole bored through the center of the concave joint 7 is provided with a missing part for disposing the joint seal 5. A small protrusion is formed at the inner side of the tip of the cylindrical protrusion formed around the center hole of the convex joint part 6, and a cutout is formed at the inner side of the tip of the cylindrical protrusion formed around the center hole of the convex joint part 6. and a small protrusion provided at the inner side of the tip of the cylindrical protrusion provided around the center hole of the concave joint part 7, and a joint is formed between the small protrusion and the missing part. This is a flexible tube or hose connection device that can hold and seal the IntoSeal 5 material. The convex joint 6 is shown as a hose joint 3 in FIG. 3, and the concave joint 7 is shown as a pipe joint 3' in FIG.

Next, to describe the effects resulting from the above configuration, by simply screwing together the male thread at the tip of the convex joint and the female thread at the tip of the concave joint, the This has the effect of reliably connecting a diameter hose and a small diameter hose, or a large diameter flexible tube and a small diameter flexible tube. In addition, the ends of the large-diameter flexible tube and the small-diameter flexible tube or the ends of the large-diameter hose and the small-diameter hose can be connected to an annular shape with the same diameter as the flexible tube and hose provided in the convex joint and the concave joint, respectively. Since it is inserted into a deep groove hole and firmly fixed so that it can also function as a seal, there is an effect that there is no risk of fluid, such as pressure oil, leaking from that part to other parts. In addition, a large number of through holes are bored along the annular deep groove holes for connecting flexible tubes or hoses in each of the convex joint part and the concave joint part. Since the opening of the through hole is formed in the portion between the large diameter portion and the small diameter portion of each of the small diameter flexible tube, not only is there no problem in terms of strength during use, but also the annular deep groove hole is formed during manufacturing. The through-holes also face in the same direction, which facilitates machining and improves accuracy. In addition, a missing part is provided for arranging a joint seal at a position inside the tip of the cylindrical protrusion formed around the front end opening of the center hole of the convex joint, and a cutout is provided in the center hole of the concave joint. A small protrusion provided on the inside of the tip of the cylindrical protrusion provided around the cylindrical protrusion is butt-coupled, and a joint sealing material is sandwiched between the small protrusion and the missing portion for sealing. Therefore, when the convex joint part and the concave joint part are connected, the cylindrical protrusions of both joint parts are butt-connected, and the fluid passing through the center hole of the joint part is The joint sealing material held between the protrusion and the missing portion prevents leakage to the outside, that is, between the large diameter portion and the small diameter portion of the flexible tube or hose, and at the same time prevents the leakage of the flexible tube or hose. The joint sealing material has the effect of blocking the fluid flowing between the large diameter portion and the small diameter portion of the hose from flowing into the small diameter hose or small diameter flexible tube. In addition, during manufacturing, joint sealing material is placed in the missing part located inside the tip of the cylindrical protrusion provided around the center hole of the joint, thereby preventing the sealing material from moving unnecessarily. , the sealing material is reliably held by the small protrusion provided inside the tip of the cylindrical protrusion of the mating joint, and there is no need to separately align the missing part and the small protrusion. be.

Next, as shown in the embodiments of FIGS. 3 and 4, the present invention allows one joint to be a hose joint or a flexible pipe joint, and the other joint to a pipe joint. The connection principle is the same for the fittings, and by making sure that the seals at the connection parts are properly sealed, it is possible to coaxially connect two high-pressure hoses, a large-diameter high-pressure hose, a high-pressure pipe and a small-diameter high-pressure hose, or a high-pressure pipe. Hydraulic oil or There is an effect that the operating oil can be individually poured into each hydraulic machine or hydraulic equipment. In addition, in the past, multiple high-pressure hoses and high-pressure pipes were used, and the hoses and pipes were often damaged or cut when used under harsh conditions. By using high-pressure hoses and high-pressure pipes, damage to hoses and pipes can be prevented as much as possible.

Furthermore, even if the pressure fluid inside the small diameter hose or pipe leaks out of the small diameter hose due to damage to the small diameter hose or small diameter pipe, the pressure fluid will reach the outside of the large diameter hose because the large diameter hose exists outside of the small diameter hose. This has the effect of preventing problems such as leakage.

[Brief explanation of the drawing]

Figures 1A and 2B are cross-sectional views of the double-type high-pressure hose and high-pressure pipe according to the invention of this application, and Figures 2-A and 2B are the double-type high-pressure It is a longitudinal cross-sectional view of a hose and a high-pressure pipe,
FIG. 3 is a cross-sectional view showing the end of the double-type high-pressure hose shown in FIG. 1A and FIG. 2A connected to the hose joint, and FIG. It is a cross-sectional view showing the end of the double-type high-pressure pipe shown in Figure B connected to a pipe joint.
FIG. 5 is a top view of the hose joint shown in FIG. 3, taken along line A-A in a sectional view of the hose joint and the hose connected. 1...Small diameter hose, 1'...Small diameter pipe, 2...
...Large diameter hose, 2'...Large diameter pipe, 3...Hose joint, 3'...Pipe joint, 4...Outer seal,
4'...Inner seal, 5...Joint seal, 6
...Convex joint part, 7...Concave joint part.

Claims (1)

[Scope of utility model registration request] A joint part consisting of a combined body of a convex joint part 6 formed with a male thread on the outer circumference of its tip and a concave joint part 7 formed with a female thread part on the inner circumference of its tip;
A convex joint part 6 and a concave joint in a flexible pipe or hose connection device consisting of a flexible pipe or hose connected to a flexible pipe or hose connection part provided at the end of each joint part of the joint part. A center hole is formed in the center of each part 7, and a concentric circle is formed on the opposite end surface of the male thread part and the female thread part of the joint part at a position outside the center hole, with the center hole as a reference. A plurality of annular deep groove holes for connecting flexible tubes or hoses are formed in a shape, and the ends of the flexible tubes or hoses are inserted into each deep groove hole and fixed, so that they can also function as seals 4, 4'. a large diameter hose 2 of a flexible pipe or hose connected to the joint part;
2' structure and the small diameter hoses 1 and 1' structure, a large number of through holes are bored in the direction along the center hole of the joint, and the convex joint A protruding surface raised portion is formed from the tip of the male threaded portion of the portion 6 toward the front of the center, and the projected surface raised portion connects the female threaded portion of the concave joint portion 7 to the male threaded portion of the convex joint portion 6. By screwing them together, the concave surface part-like recessed part formed from the rear end of the female screw part of the concave joint part 7 toward the rear of the center part comes into close contact with the concave part, and the center part of the convex joint part 6 A cutout is provided in order to arrange the joint seal 5 at the inside position of the tip of the cylindrical protrusion formed around the front end opening of the bored central hole, and the center of the concave joint part 7 is bored. A small protrusion is formed inside the tip of a cylindrical protrusion formed around the front end opening of the central hole, and a small protrusion is formed inside the tip of the cylindrical protrusion provided around the center hole of the convex joint part 6. The missing part provided at the position and the small protrusion provided at the inner side of the tip of the cylindrical protrusion provided around the center hole of the concave joint part 7 are butted together, and the small protrusion and the missing part are joined together. A flexible pipe or hose connection device that is capable of sealing by sandwiching a joint seal 5 material between the parts.