JPS59226792A - Staple joint - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in stable joints that have been well known and used for some time. Couplings with staples (U-shaped clasps) are primarily used for connecting hydraulic hose parts in mining technology, but can also be used for other fluid media.

More particularly, the present invention comprises interfitting male and female members for connecting hoses within a fluid system, at least one of the members having a fluid-tight seal between each member. In order to prevent the members from separating, each member has an outer group and an inner group that engage with each other when the members are mated, and the female member has staples. When inserted into the hole, it will fit into an interlocking group on each member,
The present invention relates to a stable joint that is provided with a receptacle for receiving a staple, positioned and arranged to prevent separation of the parts.

An example of such a stable joint is British Patent No. 1253.
No. 981 specification.

Conventional highly secure fittings often have difficulty removing staples from holes as the pressure inside the fitting increases. Under low pressure, staples will release with less energy, but with normal hydraulic media,
Even with large amounts of stored energy from accumulators,
It is believed that the pressure that normally allows staples to be removed is sufficient to withstand the risk of staple removal.

However, hydrothermal, chemically hazardous fluids and gases,
For fluid media such as water vapor, it is important to carefully consider the internal pressure of the joint as well as the potential dangers that may arise from joint dislodgement. For example, if an air hose were to be disconnected from a near compressor receiver before the air was completely exhausted, the hose would swing around and pose a considerable danger.

Therefore, the present invention is directed to more effectively locking the stable joint.

That is, the present invention provides a stable joint having at least one staple, a peripheral group, and a receptacle for receiving the staple. When this staple is fully inserted,
configured to restrict axial movement of the two coupling members as they move apart relative to the clamped position, thereby preventing removal of the staple until they return to the unclamped position, and in use; is provided with means for forcibly holding each member in the fastened position.

The above means may be a simple device utilizing hydraulic pressure within the joint, or may be an elastic mechanism acting between the joint members. This elastic mechanism may be used in common with the seal, or may be provided separately from it, or an additional elastic mechanism may be provided.

A preferred elastic mechanism is such that when two members are connected, the relative axial movement of the members causes the two members to move apart along the cylindrical surface of one member so as to return them to their original shape. Mention may be made of elastic rings that are forcibly wound.

In this case, it is advantageous to have a tapered surface and to fit the ring by means of a cylindrical tapered surface on the other member with an opposite taper. This tapered surface is preferably provided on the inside of the female member and on the outside of the male member.

Axial movement of each member relative to the tightened position may be effected by a recess provided on the staple. This allows the staple to fit into a recess adjacent one of the peripheral groups.

The hole for receiving the stable is preferably provided in a portion of the female member that can rotate in response to the stationary member so that the stable can be inserted at any position when the female member is rotated.

Next, embodiments and modifications of the stable joint of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a partial cross-sectional view of the female member in the axial direction.

FIG. 2 is a partial cross-sectional view of the male member in the axial direction.

FIG. 3 is a partial sectional view in the axial direction of the female member and the male member fitted in a position where the stable can be inserted and pulled out.

FIG. 4 is a cross-sectional view taken along the line X--X in FIG. 3.

FIG. 5 is a partial axial cross-sectional view of the two members in a fastened position in which the stable cannot be pulled out.

FIG. 6 is a cross-sectional view taken along the line X--X in FIG. 5.

Figures 7 to 11 are examples of different shapes of stables and groups, and Figures 7a to 11]
Figure -a shows the stable in a position where it can be pulled out, and Figures 7b to 11b show the stable in a position where it can be pulled out.

First, in FIGS. 1 and 2, the female member 10 has a main body 1 and a frame 2. As shown in FIG. The body 1 is provided with an external thread 11 for access to the frame and body 2. This can also be used as a means of attachment when connecting to another hose.

The body 1 is also provided with a hexagonal nut 12 for fixing it to the frame.

A group 14 is provided inside the body 1 and receives an O-ring 15. These are provided in a portion 16 of enlarged diameter to receive the male member.

The diameter is further enlarged in section 18 and tapers 19
is formed, and under normal conditions, 0 is formed at the end of the maximum diameter of the taper.
- The ring 20 is inserted and is prevented from moving to the right in FIG. 1 by the single step 25.

A frame 2 is screwed into the main body 1. This frame 2 has a sleeve 21 which surrounds the body and an annular portion 23 which can be fitted into a group 24 on the body so that the frame rotates relative to the body but cannot be separated axially. It is provided.

This frame is bored with tangential holes 26 which form groups 27 in its interior.

Male member 30 is attached to hose 31 in the usual manner via ferrule 32. This male member 30 further includes an outer peripheral group consisting of a semicircular group 33 and a notch 3.
It has 4. There is a tapered surface 35 and a short cylindrical portion 36 following the tapered surface 35, and further has a circumferential surface 37 having a smaller diameter than this portion 36.

Figures 3 and 4 show the two parts being assembled together and the stable 39 being inserted into the group of male and female parts. It can be seen from these figures that section 37 is received in the tapered section 16 of the female member so that the internal holes of the interlocking joints are of approximately the same diameter.

In addition, the O-ring 15 forms a seal with the male member, and the Q IJ ring 20 rotates along the tapered surface 19 by the tapered surface 35, and between these tapered surfaces there is a It can be seen that diagonal compression is applied. Thus, in this position, the O-ring is compressed and rotated from its normal position, causing the tapered surfaces to rotate in a manner that returns the male and female members to their original positions as they attempt to separate. .

Both rims of the stable have indentations 42
have. ′! i: As shown in FIGS. 5 and 6, the two members are moved apart by the action of the O-ring 20 toward a position where the stable cannot flex. This causes the stable to be accepted into group 34 instead of semicircular group 33;
Only in the recessed part of the stable is the rim end of the stable stuck in the group and unable to be pulled out.

This means that in order to pull out the staple, there are two
The two parts must be forced back into the position shown in FIGS. 3 and 4, which means that this cannot be done while pressure is present in the joint. The pressure within the fitting acts to pull the two parts of the fitting apart, causing these old two parts to separate.
Pressing the two parts together requires a force equal to the pressure multiplied by the cross-sectional area sealed inside the fitting.

In the present invention, design changes can be made within well-known ranges. For example, the staple may have a square cross section and the other portions of the joint may be shaped to match.

An example of this is shown in Figures 7a and 7b.

It is also possible to cut the sides of the staple rim. This is as shown in Figures 8a and 8b in the case of a circular cross-section staple, and as shown in Figures 9a and 9b in the case of a square cross-section staple. FIGS. 10 and 11 are examples in which the staple is cut into yet another shape.

It is possible to use other spring types as the elastic body provided with the Q'lJ ring running along the two tapered surfaces. This can be done with a spring that has a damping function and does not have rotational action, or can be done with a compression coil spring, a wave washer, a conical coil spring, etc. Furthermore, the elastic spring action can be reinforced by its own fluid seal.

The female member can also be formed as a single piece, in which case the position of the staple-receiving hole does not rotate.

If the seal provided by the O-ring 15 has a sealing function and a separating function of the two parts, it is advantageous to arrange it on the male part.

The holes on the female member can be provided as described in GB 1253981.

[Brief explanation of drawings]

Fig. 1 is a partial sectional view of the female member in the axial direction, Fig. 2 is a partial sectional view of the male member in the axial direction, and Fig. 11-3 shows the female member and male member fitted in the position where the staple can be attached and removed. 4 is a cross-sectional view taken along line X-X in FIG. 3; FIG. 5 is a partial sectional view in the axial direction of two members fitted into the non-removable position of the staple. , FIG. 6 is a cross-sectional view taken along the line X-X of FIG. 5, and FIG.
Figures 11 to 11 are cross-sectional views showing combinations of staples and groups of different shapes, with those marked a being in removable positions, and those marked b being in non-removable positions. are shown respectively. The symbols in the figure have the following meanings. 10...Female member 14, 24.27.33...Group 15.20...
・0-ring 30...Male member 39...Stapling agent Agata Kiriichi 12= Fig. 1/ Fig. 2

Claims (1)

[Scope of Claims] 1. A male member and a female member that are fitted together to connect hoses in a fluid system; a seal provided on at least one member to provide a fluid-tight seal between each member; and an outer circumferential group and an inner circumferential group provided on each member so as to interlock with each other when these members are fitted, and when a staple is inserted into these groups, the staple fits into the interlocking group on each member. At least one of the staples in a staple joint includes means for preventing separation of the members consisting of holes positioned and arranged to prevent separation of the respective members.
The group and the staple-receiving hole limit the axial movement of the two members in the direction of separation relative to the fastened position when the staple is fully inserted, thereby causing each member to be in the unfastened position. 1- A staple joint, characterized in that it is constructed so that the staple cannot be removed, and that during use it is provided with means for maintaining the parts in a fastened position. 2. The staple joint according to claim 1, comprising an elastic mechanism for moving each member to the fastening position. 3. When an elastic mechanism connects two members, their relative axial motion forces the two members to wrap around a cylindrical surface on one member and return to its original shape. 3. A staple joint according to claim 2, comprising a resilient ring which tends to separate the parts. 4. A staple joint according to claim 3, wherein the surface of one member is tapered and the ring is incorporated by a cylindrical tapered surface of the other member with an opposite taper. 5. Any one of claims 1 to 4, wherein the axial movement of each member into the fastening position is carried out by providing a recess in the staple and engaging this recess adjacent to one of the circumferential groups. Staple joint 6 described in 6 The hole for receiving the staple is provided in a part of the female member that is rotatable in response to the stationary member and that allows the staple to be inserted at any rotational position of the female member. A stable joint according to any one of claims 1 to 5.