JPH0112074Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a connector for multiple pipes, and more specifically, for connecting multiple pipes each having a plurality of fluid passages to the input ports and output ports of pneumatic equipment such as solenoid valves and cylinders. Concerning multiple pipe connectors.

2. Description of the Related Art Various devices for driving or controlling objects using fluids such as air have been widely used. In this case, the various devices described above usually include an input port for introducing air and an output port for removing air. Therefore,
Pipe lines are connected to the input port and the output port, respectively.

Conventionally, therefore, in order to minimize the installation space for these pipes and to facilitate their maintenance and management, the pipes for introducing and discharging the fluid have been arranged in a group as much as possible. A specific example is shown in FIG.

That is, an input (output) port 4 and an output (input) port 6 are formed in the device 2, and conduits 8 and 10 are connected to these ports 4 and 6, respectively. A first connector 12 is interposed between the conduit 8 and the port 4, while a first connector 12 is interposed between the port 6 and the conduit 1.
A second connector 14 is interposed between the connector 0 and the connector 0. In fact, the first connector 12 and the second connector 14 are threaded into the ports 4, 6, respectively, and the conduit 8 and the conduit 10 are connected to the first connector 12, respectively.
The second connector 14 is fitted into and connected to engagement conduits 16 and 18 formed integrally with the second connector 14.

Therefore, in such a configuration, pipe line 8 and pipe line 1
0 is bundled with strings 20 or bands, etc., in an effort to reduce the installation space as much as possible and to facilitate maintenance and management. However, in this prior art, for example, in a device with many output ports such as a manifold type solenoid valve, the pipes 8 and 10 are
The number of tubes that make up the system increases, and the configuration itself becomes more complex. Furthermore, as described above, since the conduit itself must be secured at several locations with strings 20, bands, etc., a considerable number of man-hours are required for the tightening. Furthermore, the number of piping steps increases in proportion to the number of tubes, and as a result, there is a considerable risk of erroneous connections between ports, so-called erroneous piping. In addition, when multiple tubes are tightened with strings or bands, in the prior art as described above, as the piping pitch becomes narrower, even if a connector is used, the tubes themselves have to be tightened due to the narrow piping pitch. Not easy to plug into the connector. Moreover, the number of connectors increases, which inconveniently increases the number of piping steps.

Therefore, as a result of intensive research and ingenuity, the inventors of the present invention focused on a multi-tube in which multiple fluid passages are defined within a single tube, and found that A connector defining a fluid passage is prepared, and the multi-pipe is airtightly connected to the pipe portion protruding from the connector, and a bolt that is screwed into a device such as a solenoid valve or cylinder is engaged with the connector. If multiple pipes and devices are connected through these bolts, there is no need to tighten the tubes with strings, bands, etc., and there is less possibility of incorrect piping.Moreover, special consideration should be given to the piping pitch. It was found that a multi-pipe connector capable of easily and reliably connecting a fluid passage to a device was obtained, and that the various problems described above were solved at once.

Therefore, the purpose of the present invention is to provide a multi-pipe connector that can minimize the installation space, avoid incorrect piping, minimize the number of connectors, and can be manufactured at low cost. It is in.

To achieve the above object, the present invention comprises a bolt and a body, the body has a tapered internal thread communicating with a first fluid passage formed therein, and a bottom part of the internal thread. defining a second fluid passageway formed through the body;
The bolt itself has a fluid passage communicating with the first fluid passage of the body, and enters a hole formed in the body to engage a multi-tube having a tapered thread formed on the internal thread. and communicates at least one fluid passage provided in the multiple tube with the fluid passage of the bolt via a first fluid passage formed in the body, and connects the other fluid passage of the multiple tube to the fluid passage of the bolt through a first fluid passage formed in the body. communicatively connected to a second fluid passage of the body;
The bolt is screwed into the fluid passageway of the object through a hole in the body to connect the multiple pipes and the fluid passageway of the object, and to fix the body to the object.

Next, preferred embodiments of the multi-pipe connector according to the present invention will be described in detail with reference to the accompanying drawings.

2 and 3, reference numeral 30 indicates a multi-pipe connector according to the present invention. The connector 30 includes a rectangular parallelepiped body 32 and a cylindrical column 33 extending from the body 32.
That is, by using the circular space of the columnar body 33,
The body 32 has a first portion bent from the center thereof.
A fluid passage 34 is provided inside. A tapered internal thread 35 is formed in the vertical cylindrical inner wall of the columnar body 33 in communication with one end of the first fluid passage 34, and the other end of the first fluid passage 34 is connected to the body 32 in the figure. It communicates with a large-diameter hole 36 that penetrates in the vertical direction. The body 32 has an annular groove 38a, corresponding to the upper and lower ends of the hole 36.
38b is carved, and seal rings 40a, 40b fit into these annular grooves 38a, 38b. On the other hand, in the body 32, a stepped hole, that is, a second fluid passage 42, which vertically penetrates the bottom of the vertical part of the first fluid passage 34 that bends from the vertical direction to the horizontal direction is formed. . This stepped hole portion 42 has a large diameter portion 44 above and a small diameter portion 4 below.
It has 6. An annular groove 48 is carved in the middle portion of the inner wall of the large diameter portion 44, and a seal ring 50 is fitted into this annular groove 48. Further, an annular groove 52 is formed in the lower surface of the body 32 so as to surround the small diameter portion 46, and a seal ring 54 is fitted into the annular groove 52. Note that the large diameter portion 44
The diameter of the inner tube 88 of the multiple tube 76, which will be described later, is determined in advance.
The diameter should be selected so that it has approximately the same diameter as the outer diameter of.

Next, a bolt 60 is further provided in the present invention. This bolt 60 has a threaded groove 62 formed at its lower end, and a bent hole (fluid passage) 64 provided inside its elongated main body.

The connector for multiple pipes according to the present invention is basically constructed as described above.Next, the function and effect when connecting multiple pipes to a solenoid valve, cylinder, etc. using this connector will be explained. .

First, an object 70 having holes corresponding to the holes 36 and 42, such as a solenoid valve or a cylinder, is prepared in advance. In this case, device 70 is provided with fluid passages 72 and 74, respectively. On the other hand, two fluid passages 78,
As shown in FIG. 4, the multiple tube 76 having a diameter of 80 is comprised of an outer tube 86 and an inner tube 88 that are arranged concentrically, and the outer tube 86 is made of a steel tube and has a tapered screw 90 at its tip. On the other hand, the inner tube 88 is made of a so-called highly flexible member made of soft synthetic resin or the like.

Therefore, the body 32 is placed on the device 70, and the hole 36 and the fluid passage 72 as well as the stepped hole 44 and the fluid passage 74 are placed in communication. In this state, the bolt 60 is attached to the body 32.
It passes through the hole 36 and is fitted into the fluid passage 72. Since a threaded groove 94 is formed in the fluid passage 72 of the device 70, when the head of the bolt 60 is screwed, the threaded groove 62 at the tip thereof is screwed into the threaded groove 94 of the device 70, and this As a result, the bolt 60 finally secures the body 32 to the device 70, as shown in FIG. For this reason,
The hole 64 of the second tightening member 60 is connected to the first fluid passage 3.
4, and is connected to the hole 3 as shown in FIG.
Since a slight gap 92 is formed between the second tightening member 6 and the wall of the second tightening member 60, the second tightening member 6
Regardless of the spiral angle of 0, the first fluid passage 34 and the fluid passage 64 can maintain a communicating state.

In the above arrangement, the multiple pipe 7
The inner tube 88 of No. 6 is extended downward and its tip is fitted into the large diameter portion 44 of the stepped hole 42, and then the tapered screw 90 of the outer tube 86 is screwed into the inner screw 35 of the column 33. and tighten firmly. As a result, the outer tube 86 is hermetically fitted to the columnar body 33 under the action of the tapered screw 90, and the fluid passage 78 defined by the outer tube 86 communicates with the fluid passage 34. Of course, at this time the fluid passageway 80 defined by the inner tube 88 is a stepped hole, i.e.
It communicates with the second fluid passage 42.

In such an assembly configuration, if fluid, for example, air, is sent from the multiple pipe 76 side through the fluid passage 78, the air will flow through the fluid passage 34, the hole (fluid passage) 64, and the fluid passage 72. After that, it reaches the inside of the device 70 and performs a predetermined function. on the other hand,
The recirculating air reaches the fluid passage 80 of the multiple pipe 76 via the stepped hole portion, that is, the second fluid passage 42, from the fluid passage 74, and returns. In this case, a screw groove 96 is also formed in the fluid passage 74 of the device 70, and this screw groove 96 is used to screw the bolt 60 when the body 32 is disposed facing in the opposite direction. So-called reverse use is ensured to make it possible.

According to the connector of the present invention, it is now possible to airtightly and reliably communicate multiple pipes forming multiple fluid passages with various devices such as solenoid valves and cylinders in a small space. Therefore, it is possible to easily avoid the work of bundling the tubes constituting the fluid introduction system and the fluid extraction system, or the possibility of incorrect piping. Moreover, the connector according to the present invention requires less installation space, and
Since it can be easily fixed to the device itself, the practical effect is that it is extremely easy to handle.

Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to the above embodiments, and various improvements and design changes can be made without departing from the gist of the present invention. Of course.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram showing the coupling relationship between a multiple tube and a device according to the prior art, and FIG. 2 is a partially omitted vertical cross-sectional view showing the coupling relationship between a multiple tube connector, a multiple tube, and a device according to the present invention. , FIG. 3 is an exploded perspective view of the multiple tube, connector, and device shown in FIG. 2, and FIG. 4 is a partially sectional perspective view of the multiple tube incorporated in FIGS. 2 and 3. 30...Connector, 32...Body, 33...
...Column body, 34...Fluid passage, 35...Inner screw,
36... Hole, 38a, 38b... Annular groove, 40
a, 40b...Seal ring, 42...Stepped hole portion, 44...Large diameter portion, 46...Small diameter portion, 48...
Annular groove, 50... Seal ring, 52... Annular groove, 54... Seal ring, 60... Bolt, 6
2... Thread groove, 64... Hole, 70... Device, 7
2, 74...Fluid passage, 76...Multiple pipes, 7
8, 80...Fluid passage, 86...Outer tube, 88...
...Inner tube, 90... Taper screw, 92... Gap, 9
4,96...screw groove.

Claims (1)

[Claims for Utility Model Registration] (1) Consisting of a bolt and a body, the body has a tapered internal thread that communicates with a first fluid passage formed inside the body, and a body at the bottom of the internal thread. defining a second fluid passageway formed through the body, the bolt itself having a fluid passageway in communication with the first fluid passageway of the body, and defining a second fluid passageway formed through the body; A multi-tube having a tapered thread is inserted into the internal thread, and at least one fluid passage provided in the multi-tube is connected to the bolt through a first fluid passage formed in the body. communicates with a fluid passage, connects the other fluid passage of the multiple pipe to a second fluid passage of the body, and screws the bolt through the hole of the body and into the fluid passage of the object. A connector for multiple tubes, characterized in that the multiple tubes are connected to a fluid passage of a target object, and the body is attached to the target object. (2) In the connector described in claim 1 of the utility model registration claim, the fluid passage installed in the bolt is bent so as to communicate with the first fluid passage installed inside the body. connector.