JPS62251581A - Revolution changeover 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 In couplings used in fluid technology, especially pneumatic technology,
Shutdown of connected tubes depends on the degree of pressure previously handled from these tubes. A "coupler" type connection incorporates a valve that automatically opens and closes the upstream fluid flow under the influence of the pressure of the fluid and facilitates shutoff of the pipe under pressure. However, such couplers are not flexible, both because the downstream tube must be provided with a suitable end member and because the blocked downstream tube has no fixing means. Cannot be used for pipes. In complex fixings d, it is preferred to use valves that are permanently connected to the pipes and control the opening or breaking of the fluid circuit, removing the compression of the downstream pipe in the event of a break. Manual operation such as operating a lever or rotating a knob
These bistable valves, which perform single or multiple functions depending on their function, are often used in pneumatic technology to control and convey information signals. However, since these valves are complex, their purchase and maintenance costs are high despite their infrequent use.

The object of the invention is to provide a simple and robust structure which satisfies the above requirements and which can be arranged in a pipe and which ensures both the connection of the pipe to another pipe and the connection of the pipe to an orifice of a stationary member. The goal is to provide the following devices.

The rotational switching joint of the present invention is primarily formed from two members rigidly connected to each other, which members can be manually driven for relative rotation and maintaining relative rotational positions.

Each of the components has one or more fluid passage channels, the orifices of the channels opening into the side of the component proximate to the joint on a circle of equal diameter about the axis of rotation of the component. .

These orifices in at least one member are fitted with resilient seals, more specifically rubber 10 seals. The seal is fitted with an H-shaped receptacle that is slightly shallower than the thickness of the seal, and the cup-shaped receptacle presses against the seal from both sides to keep it in place.When the two parts are joined together, the seal The channel is slightly compressed against the adjacent surface of the counter member, sealing the channel from the atmosphere at all rotationally aligned locations and also during rotation by sliding along said adjacent surface. It has 11 characteristics. Thus, a sealed bidirectional fluid passage is established on each side of the switching joint at locations where the orifices of the channels of one member axially mate with the orifices of the channels of another member. In another position, a channel with an O-seal, which can be considered an input channel connectable to an upstream circuit, is closed by the smooth surface of the counter member. On the other hand, the channel of the counter member without a seal would in this case be considered an output channel connectable to a downstream circuit and would be in communication with the atmosphere by a channel opening to the outside of the device. Provides instant connection means including external orifices for the various channels. When each member of the switching fitting has multiple orifices, the tubing used with this type of fitting is a semi-rigid tube that can withstand some degree of torsional stress and passage deflection.

The invention will be understood more fully from the following detailed description of some non-limiting embodiments shown in the drawings.

Figure 1 shows the connection between the upstream pipe on the inlet side and the downstream pipe on the outlet side.
FIG. 2 is an axial cross-sectional view of a square-shaped rotary switching joint of the present invention. The fitting can, as desired, provide continuous fluid flow in both directions or can sealingly interrupt fluid flow to communicate the downstream tube to the atmosphere. Removal of the downstream pipe is also extremely easy.

This switching joint includes a part 1 made of plastic material, which part 2 consists of metal or plastic material.
It has a circular concave skirt 13 that is press fit into the circular convex end member 12 of the . The concave skirt 13 has one or more annular ridges with a hook-like cross-sectional shape, which ridges allow the parts 1 and 2 to be aligned without shifting relative to each other after the snap engagement of these parts. It engages one or more grooves in the convex end member 12 for rotation about the wheel axis xx.

In this type of assembly, the position given by the rotational force exerted by the muscular forces of the assembly components is maintained at t4 by friction. Channel 3 of part 1 has external orifice 5
The channel 4 of the portion 2 communicates with the external orifice 6. Each orifice is equipped with a cartridge 55,56, referred to as a momentary tube coupling cartridge.

The inner orifices of the channels 3 and 4 open on equal circles of diameter YY centered on the axis of rotation XX at the adjacent joining surfaces of the two parts. The inner orifice 2 of channel 4 is made of rubber.
It is covered with a circular cup 7 containing a no seal 8. Since the cup 1 is slightly shallower than the thickness of the seal 8 and has a negative connection play, the axis of the palm levers 3 and 4 at the position of the whistle 11 is In agreement,
A bidirectional sealing fluid flow can be established between the orifices and the orifice 5. At a position of member 1 displaced by an angle of 180° from the position of FIG. It is located on an extension of the aperture 9. The orifice 5 thus communicates with the atmosphere d3, and the orifice 6 has a seal 8 supported on the smooth surface 11 of the part 1.
It is sealed hermetically. The passage 6-4 with the seal 8 may be considered a fluid inlet passage, and the passage 5-3 configured to connect to the atmosphere may be considered an outlet passage.

FIG. 2 is an axial cross-sectional view of another specific example of a two-way rotary switching joint. In the first row shown, the inlet 6 is closed and the outlet 5 is open. The orifice 5 has an internal thread 55 for threading another fitting, and the orifice 6 has a male thread 6 for threading the device into the orifice of the ankle device. The rotations 11i11ri2 are carried out by part 1 only. The concave circular skirt 1-13 of section 1 is connected to the inlet passage 6-4.
The part 2 containing the part 2 is crimped to the unfinished member 12 and thus to the seal 8. In an embodiment in which the orifice 2 is the inlet, which is a reversal of the embodiment shown, the O-seal 8 would be housed in the cup 7 of part 1 and used as a cap for the channel 3.

FIG. 3 is an axial cross-sectional view of another specific example of a two-way switching joint. The illustrated position is the exhaust position of the tube connected to the orifice 5. The two parts 1 and 2 are connected to each other by a plastic material ring 13. The ring 13 has a hook-like circular internal ridge which engages a circular groove formed in the equally convex end member 12 of each of the parts 1 and 2 to prevent separation from each other. A series of apertures 9 formed in the periphery of ring 13 provide exit passageways at all angular positions except those where channels 3 and 4 are axially coincident and sealingly establish bidirectional fluid flow. Connect 5-3 to the atmosphere.

Orifices 5 and 6 include internal threads 55 and 66 for receiving conventional coupling members.

FIG. 4 is a schematic isometric view showing the geometric location of the passages of the two-way switching joint not shown in FIGS. 1, 2, and 3;

FIG. 5 is an axial sectional view and a side view of a banjo-type reversible two-way switching joint.

FIG. 6 is three isometric views showing the three valid alignment U" states of the device. A feature of the devices of FIGS. 5 and 6 is that orifices 5 and 6 are separately inlet or The orifice can function as an outlet, and the orifice is connected to the outlet only at the end of the direction rotated by 120° and communicates with the atmosphere, resulting in a two-way 8i communication position as shown in the left end view of FIGS. 5 and 6. In this case, the seals 8 of each set are in contact with each other.As shown in the center view of FIG.
At another position rotated by 0° t, exhaust occurs due to channel 3 meeting channel 9 of part 2. vice versa,
In the position shown in the rightmost view of FIG.
Rotated 0° and evacuation channel 9 of section 1 is channel 4
matches. In all other positions channel 3.4 is closed.

Switching couplings such as those shown in FIGS. 5 and 6 are mounted separately on the pressurized fluid supply 8A and receiving devices.

The method according to the invention makes it possible to perform more complex functions, in particular to form a device with multiple inlets and outlets, in which a multi-channel type allows selection of various inlet-outlet connection passages. 7 to 14 are schematic isometric views of several embodiments of switching joints, described as non-limiting embodiments.

FIG. 7 shows a 4.
It is a schematic explanatory view of a square type switching joint. The outlet 5.5x opens into the joint surface 11 of the part 1.2 by means of an orifice 3,3x. The orifices 3 and 3x are provided at positions facing each other in the diametrical direction on a circle having a radius of XY.

In part 2, only one inlet 6 opens into the joint surface by a channel 4 with an O-seal 8.

The seal 8 is diametrically opposed to a radial groove 10 communicating with the atmosphere. At the locations shown in sections 1 and 2, a bidirectional fluid passage is formed from inlet 6 to outlet 5, and outlet 5x
communicates with the atmosphere via the groove 10 and an aperture 9 (not shown) in the skirt 13 of the portion 1.

When part 2 is rotated by 180°, the opposite connection is established.

FIG. 8 shows a switching joint which performs the same function as the joint shown in FIG. However, in FIG. 8, the axes of the outlets 5 and 5× are perpendicular to the rotation axis XX.

FIG. 9 shows a four-way switching joint with two inlets and two outlets. This fitting can be connected to two separate fluid passages, such as connecting passages 6-5 and 6x-5x, or 180° as shown.
2 such as connecting passages 6-5x and 6x-5 in the rotated position.
Two separate fluid passages are formed. At the position rotated by 90 degrees, are exits 5 and 5x the same as input rotary 1? It communicates with the atmosphere through two iR9,9x which are diametrically opposed on a circle of radius XY and have an angular difference of 90° with respect to the channel 4.4x.

FIG. 10 shows a four-way switching joint with two inlets 6.6× and only one outlet 5. FIG. This joint can convey either of the two introduced pressure information to only one downstream circuit.

Figure 11 shows two inlets 6,6x and two outlets 5,5x.
shows a switching joint with Orifices 4 and 4x corresponding to the inlet of part 2 and 6x are 90 degrees apart from each other on a circle with radius XY.
°located at a distance. On the other hand, at exit 5.5x of part 1,
Corresponding orientations 3.3x are present at diametrically opposite positions on the same circle.The connecting passage from the inlet 6 to the outlet 5 is holds, the output 1.:]5X communicates with the atmosphere through the radial groove 9, and the inlet 6x is closed.9 in the clockwise direction.
When rotated by 0°, connection passage Gx-5x is established and exit 5
communicates with the atmosphere. When it is rotated 90' in the counterclockwise rotation direction, a connecting passage 6x-5 is established and the outlet 5x communicates with the atmosphere. Finally, when rotated 180' with respect to the initial position, the opposite connection passages 6-5x and 6x-5 are established.

FIG. 12 shows another specific example of the switching joint. Entrance 6゜6x
The orifices 4, 4x corresponding to the outlet 5, 5x and the orifice 3,3x corresponding to the outlet 5, 5x are spaced apart by 90° on a circle having a radius of XY. We will sequentially explain the alignment of four positions separated by 90" from each other. In the initial position as shown in the figure (well, connection passages 6-5 and 6x-5x are established. In the second position, connection passages 6-5 and 6x-5x are established. -5 is established and 6 is l! 11 is suppressed and 5x
communicates with the atmosphere. In the third position, both inlets are closed and both outlets communicate with the atmosphere. In the fourth position, the connecting passage 6-5x is established, 6x is closed, and 5 communicates with the atmosphere.

FIG. 13 is a schematic representation of the switching joint described above according to FIG. 12, but in FIG. 15 and 5x, i.e. the connecting passage 0-
5 or 6-5× may hold true. It is also possible that the inlet 6 is closed and the outlets 5 and 5x are communicated with the atmosphere.

FIG. 14 is a schematic illustration of a multi-path switching joint with four inlets and four outlets. In this joint, as shown in the figure, there are four connection programs that differ depending on the alignment state rotated by 90 degrees from the initial position, and all outlets are in the discharge state at the correct position.

In all of the switching couplings described above with respect to FIGS. 1 to 14, each of the sections 1, 2 has a pipe connection orifice. According to the invention, it is possible to provide such an orifice only in one of the two parts and to make it movable; the other part has only a conveying channel and functions as a rotational control means.

One of the advantages of the rotary switching joint of the present invention is that the user can directly identify the established circuit, the closed circuit, and the first circuit by directly visualizing the correspondence between the marks carried on each of the sections 1 and 2. It is something that can be recognized.

15 is a top view of four of the switching joints described above based on FIG. 1; FIG. The top two diagrams showing the diametrical position indicate the continuity between the inlet and the outlet: iTi
C demand fr l, f-7k G2 size m+/,
)2 The closed circle symbol indicates the entrance orifice of the device. The bottom two figures show the input [1] after the alignment rotation.
Indicates that the orifice is closed. This is indicated by an inverted one-letter symbol, and the outlet orifice communicating with the atmosphere is indicated by a pneumatic symbol ■.

FIG. 16 is a schematic isometric view of a switching joint configured to be screwed into the fixing means by means of a hexagonal nut in part 2; In this case, it is not possible to predict on which side of the portion 2 the symbol should be provided in order to make the symbol visible before the parts are screwed together. In order to overcome this difficulty, the inlet channel 4 and the two outlet channels 9.9x are spaced 120° apart from each other and open on a circle of radius XY, so that the device can It has two discharge positions. FIG. 17 is a plan view showing marks provided on this switching joint. Parts 1 and 2 are provided with three groups of straight marks along the generatrix, each group consisting of a different number of lines, 120
It takes 11 minutes at a time. When one group of visible marks on the control portion 1 and a mark consisting of the same number of lines on the fixed portion 2 match, it indicates that the 1 & common path 6-5 has been established. vice versa,
When the marks consisting of different numbers of lines coincide with each other, it is indicated that the inlet 6 is closed r11 and the outlet 5 is open to the atmosphere. .

[Brief explanation of drawings]

1 is an axial sectional view of a type 2 wall rotary switching joint according to the present invention, FIG. 2 is an axial sectional view of another specific example of a two-way type wall rotation switching joint, and FIG. 3 is an axial sectional view of a type 2 wall switching joint according to the present invention An axial cross-sectional view of yet another embodiment of a rotary switching joint; FIG. 4 is a schematic isometric view showing the geometrical position of the channels of the two-way switching joint shown in FIGS. 1.2 and 3; Fig. 5 is an axial sectional view and side view of a banjo type reversible two-way switching joint, and Fig. 6 is a 3-dimensional view of the device shown in Fig. 5.
Three schematic isometric views showing two alignment U states, No. 7
14 are schematic isometric views of modified embodiments of the switching joint, FIG. 15 is a plan view of four of the switching joints of FIG. 1, and FIG. 16 is a fixing member with a hexagonal nut in section 2. FIG. 17 is a schematic isometric view of the switching joint screwed into the switching joint, and FIG. 17 is a plan view showing marks engraved on the switching joint. 1...Outlet member, 2...Inlet member, 3
, 4...Open hole, 5.6...Orifice, 7...Cup, 8...O seal. Procedurality 11 Official Book (Method) July 3, 1985 1, Indication of Case Patent Application No. 88865 of 1988 2
, Title of the invention Rotary switching joint 3, Relationship to the case of the person making the amendment Patent applicant name: Lugli 4, agent: 1-14 Shinjuku 1-chome, Shinjuku-ku, Tokyo
No. Yamada Building (1) Clear and appropriate drawings will be added as a separate set. (No change in content)

Claims (6)

[Claims] (1) A rotary switching joint for conveying a gaseous fluid toward a device and for discharging the fluid, the joint including two members constituting an inlet member and an outlet member, respectively. are connected to each other for relative rotation about a common shear axis by muscular force, and that each external orifice of at least one of the two members is subject to torsional stresses in the tube extending from the orifice. the external orifice of each member opens in each adjacent face via an aperture radially eccentric by an equal amount with respect to the common axis of rotation of both members; The opening opening in the joint surface of the inlet member is covered with an O-seal made of an elastic material, and the O-seal is fitted into a cup shallower than the thickness of the O-seal to prevent the exit member from being assembled. in one of the relative angular positions of the two members, the at least one inlet member orifice being in sealing communication with the outlet member orifice via a seal; In another relative angular position, the inlet member orifice is closed by the abutment of the seal with the imperforate zone of the smooth surface of the outlet member, and the outlet member orifice is closed by the O-seal on the adjacent faces of the two members. A rotary switching joint characterized in that it communicates with the outside air through a space formed by a gap between the occupied surface areas. (2) The rotary switching joint according to claim 1, wherein the means for axially rotating the pipe to be connected without torsional stress is an instant connection type built-in cartridge. (3) A connection of two members positioned relative to each other by rotation about a common theoretical axis, whereby a concave cylindrical skirt of one member of plastic material is connected to a convex metal end member of the other member. This is done by snap-fitting, in which the convex end member carries circular protrusions of hook-like cross-section with an outer diameter larger than the inner diameter of the concave skirt, and these protrusions are press-fit into the plastic material to form the same 2. Rotary switching joint according to claim 1, characterized in that it forms a cross-sectional groove or is introduced into a pre-cut groove. (4) A connection of two members positioned relative to each other by rotation about a common theoretical axis such that the periphery of the metal cylindrical skirt of one member fits into the groove of the convex end member of the other member. The rotary switching joint according to claim 1, characterized in that the rotary switching joint is made by fitting the rotary switching joint. (5) The connection of two parts, which are positioned relative to each other by rotation around a common theoretical axis, is carried out using a ring made of plastic material, which is made of a rigid material and has a circular projection with a hook-shaped cross section. A rotary switching joint according to claim 1, characterized in that the cylindrical convex ends of the two parts are press-fitted into the ring. (6) Marks and graphic symbols are provided on each member,
A connecting passage is established between the inlet and the outlet by the combination of these marks and the graphic symbol due to rotation;
The rotary switching joint according to claim 1, characterized in that the outlet communicates with the outside air and the inlet is closed.