JPH0112067Y2 - - 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 tube 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 equipment 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.

In order to achieve the above object, the present invention comprises a bolt and a body, the body defining at least two or more fluid passages therein, and protrudingly forming a conduit corresponding to the fluid passage. , a sharp annular protrusion is formed in the conduit to which a multiple pipe engages, and the bolt enters a hole defined in the body and itself communicates with any of the fluid passages. By screwing the bolt through the hole of the body into the fluid passage of the object and tightening it, the body is attached to the object and the fluid passage of the body is tightened. and a fluid passage of the object through the fluid passage of the bolt.

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. This connector 30 includes a rectangular parallelepiped-shaped body 32, and a first fluid passage 34 that bends from the center of the body 32 is provided inside the body 32. The first fluid passage 34 communicates with a large diameter hole 36 that passes through the body 32 in the vertical direction in the figure. The hole 36
This body 3 corresponds to the upper and lower ends.
2 are carved with annular grooves 38a, 38b, and seal rings 40a, 38b are formed in the annular grooves 38a, 38b.
40b is fitted. On the other hand, in the body 32,
A second fluid passage 42 having approximately the same diameter as the first fluid passage 34 is vertically formed on the opposite side of the hole 36 . An annular groove 46 into which a seal ring 44 is fitted is formed at the lower end of the second fluid passage 42 .

Incidentally, a first conduit 48 and a second conduit 50 are formed extending above the first fluid passage 34 and the second fluid passage 42 and protruding from the body 32, respectively. The first conduit 48 and the second conduit 50 have the same height, and have sharp annular protrusions 52 and 54 formed on the outside near their upper ends, respectively. As can be easily understood from FIGS. 2 and 3, it will be easily understood that the annular protrusions 52 and 54 have downwardly oriented inclined surfaces.

Next, a bolt 56 is further provided in the present invention. The bolt 56 has a threaded groove 58 formed at its lower end, and a curved fluid passage 60 is provided inside the elongated body portion.

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 the second fluid passage 42, such as a solenoid valve or a cylinder, is prepared in advance. In this case, the device 70 includes a fluid passageway 72,
74 are formed respectively. On the other hand, the multiple pipe 76 has fluid passages 78, 80 corresponding to the pipes 48, 50.
has. It is preferable that the multi-tube 76 is made of a highly flexible member made of soft synthetic resin.

Next, the seal ring 40b is fitted into the annular groove 38b, and the seal ring 40a is fitted into the annular groove 38a. A seal ring 4 is provided in the annular groove 46.
Fit 4. In the above arrangement, the body 32 is placed on the device 70, and the hole 3 is
6 and the fluid passage 72, and the second fluid passage 42 and the fluid passage 74 are temporarily installed in a communicating state. In this state, the bolt 56 is inserted into the hole 3.
6 and is inserted into the fluid passage 72. Since a threaded groove 82 is formed in the fluid passage 72 of the device 70, when the head of the bolt 56 is screwed, the threaded groove 58 at the tip of the bolt 56 will fit into the threaded groove 82 of the device 70.
As a result, the bolt 56 ultimately secures the body 32 to the device 70, as shown in FIG. For this reason, the bolt 56
The fluid passage 60 communicates with the first fluid passage 34, and a slight gap 84 is formed between the hole 36 and the wall of the bolt 56 as shown in FIG. , it is possible to ensure communication between the first fluid passage 34 and the fluid passage 60 of the bolt, regardless of the helical angle of the bolt 56.

Therefore, the multiple pipe 76 is fitted into the pipe lines 48 and 50 to connect the fluid passages 78 and 34, and the fluid passages 80 and 42, respectively. In this case, since the multiple tube 76 is formed of a flexible member, the annular protrusion 52,
54 press against the sides of the multi-tube 76 to ensure fluid tightness. That is, the annular protrusion 5
2 and 54 have downwardly oriented inclined surfaces, so that the multiple tubes 76 can be fitted smoothly,
Once engaged, it reliably prevents insertion and removal, and also serves as a sealing member during fluid flow.

In such an assembly configuration, if fluid, for example, air, is sent from the multi-pipe 76 side through the fluid passage 78, the air passes through the first fluid passage 34, the hole 60, and the fluid passage 72 to the device 70. It reaches the inside of the body and performs the specified function. On the other hand, the recirculating air passes from the fluid passage 74 through the second fluid passage 42, reaches the fluid passage 80 of the multiple pipe 76, and returns. In this case, a screw groove 86 is also formed in the fluid passage 74 of the device 70, and the bolt 56 is screwed into this screw groove 86 when the body 32 is disposed facing in the opposite direction. So-called reverse use is ensured to make it possible.

Furthermore, when removing the multiple tube 76 from the multiple tube connector 30 according to the present invention, it is sufficient to simply pull it out by hand while shaking it from side to side.

Next, FIG. 5 shows another embodiment of the multiple pipe connector according to the present invention. In this embodiment, the same reference numerals as in the previous embodiment indicate the same components.

Therefore, the difference between this embodiment and the previous embodiment lies in the fact that the shapes of the multiple tubes are different. That is, as shown in FIG. 6, the multiple pipe 90 according to this embodiment is a double pipe composed of a large-diameter pipe 90a and a small-diameter pipe 90b arranged concentrically in a plane. In order to fit the multiple tubes 90 having such a shape, the connector 30 employs a double tube structure, especially for the tube body having an annular protrusion formed protrudingly formed on the body. That is, as can be understood from FIG. 5, from the body 32, the tube 90
A large-diameter tube 92 into which a is fitted is formed protrudingly, and a tube 94 into which a tube 90b is fitted.
is formed protrudingly. An annular protrusion 96 having a similar shape to the annular protrusion 52 is formed on the outside of the tubular body 92, while an annular protrusion 98 having a similar configuration is protruded from the outside of the tubular body 94.

In such a configuration, for example, multiple pipes 9
First, the inner tube 90b constituting the tube 94
and then insert the tube body 90a into the outer tube body 92.
When fitted, the multiplex tube 90 and the device 70 are effectively connected via the connector 30.

FIG. 7 shows yet another embodiment of the multiple pipe connector according to the present invention. In this embodiment as well, the same reference numerals as in the previous embodiment indicate the same components.

Therefore, this embodiment is similar to the embodiment shown in FIG. A particular difference is that the annular protrusion 100 of the tube 92 protruding from the body 32 is formed to protrude inward. Therefore, in such a shape, the multiple tube 90 shown in FIG. 6 or the multiple tube 102 shown in FIG. 8 fits suitably. As can be easily understood from FIG. 8, the multiple tube 102 is provided with a stay 10 for keeping the outer tube 102a always a certain distance apart from the inner tube 102b.
4a, 104b, 104c and 104d are formed. The stays 104a to 104d prevent the fluid passage defined between the tubes 102a and 104d from deforming even if the multiple tube 102 is made of a flexible member.

Therefore, the multiple pipe connector 30 shown in FIG.
For example, the multiple pipe 102 shown in FIG.
When attaching the outer tube 102a to the tube 92
and the inner tube body 102b is fitted into the tube body 94. Thereby, the multiplex tube 102 and the device 70 are effectively connected via the connector 30.

According to the present invention, as described above, it has become possible to communicate airtightly and reliably between multiple pipes forming a plurality of fluid passages and 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. In addition, the connector according to the present invention requires less space for installation, and furthermore, it can be easily fixed to the device itself, so it has the practical effect of being extremely easy to handle.

Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to these embodiments, and various improvements and changes in design are possible 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 explanatory view of the multiple tube, connector, and device shown in FIG. 2, FIG. 4 is a partial cross-sectional perspective view of the multiple tube incorporated in FIGS. 2 and 3, and FIG. FIG. 6 is a partially omitted vertical sectional view showing another embodiment of the multiple pipe connector according to the present invention, FIG. 6 is a partially sectional perspective view of the multiple pipe connected to the multiple pipe connector shown in FIG. 5, and FIG. FIG. 8 is a partially omitted vertical cross-sectional view showing still another embodiment of the multiple pipe connector according to the present invention, and FIG. 8 is a partially sectional perspective view of the multiple pipe connected to the multiple pipe connector shown in FIG. 7. 30...Connector, 32...Body, 34...
...Fluid passage, 36... Hole, 38a, 38b...
...Annular groove, 40a, 40b...Seal ring, 4
2...Fluid passage, 44...Seal ring, 46
...Annular groove, 48, 50...Pipeline, 52, 54...
... Annular protrusion, 56 ... Bolt, 58 ... Thread groove,
60... Fluid passage, 70... Device, 72, 74
...Fluid passage, 76...Multiple pipes, 78, 80...
...Fluid passage, 90...Multiple pipes, 92, 94...
Pipe body, 96, 98, 100... Annular protrusion, 102
...Multiple pipes, 104a to 104d...Stay.

Claims (1)

[Claims for Utility Model Registration] (1) Consisting of a bolt and a body, the body defining at least two or more fluid passages within the body, and protrudingly forming a conduit corresponding to the fluid passage, A fluid passageway is formed with a sharp annular protrusion into which multiple pipes engage, and the bolt enters a hole defined in the body and itself communicates with any of the fluid passageways. The bolt is screwed through the hole of the body into the fluid passage of the object and tightened to lock the body to the object and connect the body to the fluid passage of the body. A multi-pipe connector characterized in that it is configured to communicate with a fluid passage of an object via a fluid passage of the bolt. (2) A connector for multiple pipes according to claim 1 of the utility model registration, in which a fluid passage installed in the bolt is bent so as to communicate with a fluid passage installed inside the body. (3) The connector according to claim 1 or 2 of the utility model registration is a multi-pipe connector in which the pipes corresponding to the plurality of fluid passages are composed of an outer pipe line and an inner pipe line that form concentric circles with each other. .