JP2012197902A - Hose connecting device and solenoid valve having the hose connecting device - Google Patents

Abstract

【Task】
In order to solve the above problems, an object of the present invention is to provide a hose connection device that effectively uses an arrangement space.
[Solution]
The hose connection device of the present invention includes a hose hold member having a hole through which a hose can be passed, and a fixing unit that prevents the hose from coming off when the hose is inserted into the hose joint. Features. Further, in a preferred embodiment of the hose connection device of the present invention, the fixing means has a cross-sectional area smaller than the cross-sectional area of the hose in a direction perpendicular to the longitudinal direction of the hose, and is inserted in accordance with the shape of the hose. It is a hole that can be made.
[Selection] Figure 1

Description

  The present invention relates to a hose connection device and a solenoid valve having the hose connection device.

  Conventionally, a hose joint fitting having a joint body and a nipple is known as a hose joint fitting or a hose connection device (Patent Document 1).

  In addition, in order to prevent the hose from coming off, a hose coupling device that has been crimped and joined, i.e., a hose nipple, and one end of the hose is inserted into the outer periphery of the hose nipple, and these are covered with a crimping pipe and crimped and joined together. A hose coupling device in which a hose is connected so as not to be detached is known (Patent Document 2).

JP 63-191520 JP2000-227190

  However, conventionally, it is assumed that a small hose nipple is provided and a hose is connected to the nipple. For example, in a device equipped with a small mechanical control structure in an inspection device, robot, medical device, etc., when connecting a solenoid-operated pressure air hose, etc., a small hose nipple is arranged, and a hose is attached to it. Connected. On the other hand, regardless of whether the apparatus is large or small, the presence of the nipple itself requires a certain amount of space. For example, in recent years, various control devices have increased in control elements due to technological advances, but have been reduced in size due to space saving. Therefore, the space given to each control element is becoming narrower. Therefore, a member to be connected (usually referred to as a nipple) is required when attaching a hose for drawing the pressure AIR necessary for driving the solenoid, which is also reduced in size.

  However, the nipple is tightened with a screw to be placed on a member such as a solenoid. However, if the hole diameter for AIR introduction is secured, there is a limit to the miniaturization of the screw, and it is practically smaller than a certain size. However, there is a limit to downsizing due to the screw standard and the strength of the nipple member itself. Further, the length of the overlap between the nipple and the hose is also required to be a certain minimum distance as a sealing distance so that the nipple and the hose do not fall off and pressure leakage does not occur. In addition, when bending the hose, it is necessary to secure a minimum R, so the layout of these nipples had to take into account space in the design.

  Accordingly, an object of the present invention is to provide a hose connection device that effectively uses an arrangement space in order to solve the above problems.

  In order to achieve the above object, the present inventor has intensively studied the configuration of the hose connection device, and as a result, has found the present invention.

  That is, the hose connection device of the present invention comprises a hose hold member having a hole through which the hose can be passed, and a fixing means for preventing the hose from coming off when the hose is inserted into the hose hold member. It is characterized by having.

  Further, in a preferred embodiment of the hose connection device of the present invention, the fixing means has a cross-sectional area smaller than the cross-sectional area of the hose in a direction perpendicular to the longitudinal direction of the hose, and is inserted in accordance with the shape of the hose. It is a hole that can be made.

  In a preferred embodiment of the hose connection device of the present invention, a part or all of the hole of the hose hold member has a taper.

  In a preferred embodiment of the hose connection device of the present invention, the tapered portion of the taper has a pulling force in a direction opposite to the insertion direction of the hose.

  In a preferred embodiment of the hose connection device of the present invention, the taper portion of the taper and the contact portion with the hose are not chamfered.

  In a preferred embodiment of the hose connection device of the present invention, the hose connection device further includes a seal member for preventing leakage of a medium flowing in the hose.

  In a preferred embodiment of the hose connection device of the present invention, the seal member is an O-ring.

  Moreover, the solenoid valve of this invention has the hose connection apparatus of this invention, It is characterized by the above-mentioned.

  According to the hose connection device of the present invention, there is an advantageous effect that it is possible to provide a hose connection device that can effectively use the arrangement space. According to the hose connection device of the present invention, since the hose hold member can be configured without using a so-called nipple, the hose can be effectively connected even in a limited space regardless of whether it is large or small. It has the advantageous effect of being. According to the hose connection device of the present invention, it is possible to connect a hose without using a so-called nipple, and the space saving type hose connection mechanism can be used to reduce the arrangement space. There is an advantageous effect that it can contribute to. In addition, according to the hose connection device of the present invention, plate-like components can be used for the joint, so that there is an advantageous effect that the manufacturing cost can be greatly reduced.

It is a figure which shows an example of the hose connection apparatus in one embodiment of this invention. It is a figure which shows an example of the solenoid valve which can apply the hose connection apparatus in one embodiment of this invention. It is a figure which shows an example of the hose hold member part of the hose connection apparatus in one embodiment of this invention. (A) shows sectional drawing, (b) shows the top view seen from the top. It is a figure which shows an example of the hose hold member part of the hose connection apparatus in one embodiment of this invention. It is a figure which shows an example of the solenoid valve which can apply the hose connection apparatus in one embodiment of this invention. (a) shows an example of the top view of the solenoid valve incorporating the hose connection device of the present invention and the hose connection device in a state where the valve is closed. (B) shows an example of a side view of a solenoid valve incorporating the hose connection device of the present invention in a state where the valve is closed. (C) shows an example of a top view of the hose connection device of the present invention and the solenoid valve incorporating the hose connection device in a state where the valve is open. (D) shows an example of a side view of a solenoid valve incorporating the hose connection device of the present invention in a state where the valve is open.

  The hose connection device of the present invention has a hose hold member having a hole through which the hose can be passed, and a fixing means for preventing the hose from coming off when the hose is inserted into the hose hold member. It is characterized by. The hose is not particularly limited. For example, a flexible material such as a synthetic resin such as vinyl chloride resin or rubber can be used. Further, the diameter, outer diameter, inner diameter and the like of the hose and the shape of the hose are not particularly limited, and the present invention can be applied. In the present invention, it is sufficient that the hose hold member has a hole through which the hose can be passed. The hose hold member may be an independent member, or may be integrally formed with a member into which the hose is to be drawn and incorporated in the member.

  Further, the hole may have a structure in which the hose is less likely to be removed as the pressure in the hose is increased and the hose expands when gas, liquid, or the like is introduced into the hose. For example, the inner surface of the hole may have a structure like a so-called return of a fishing hook as described below, and the hose may be made difficult to come off by making the friction coefficient higher than the other surface of the member. Even if the inner surface of the hole is not simply polished and remains mechanically cut, the friction coefficient of the inner surface of the hole can be made higher than the friction coefficient of the other surface of the member forming the hole, making it difficult to pull out the hose. Is possible.

  In the hose connection device of the present invention, the shape of the hose hold member is not particularly limited as long as it can have a hole. For example, a plate-like component can be used for the hose hold member. In this case, there is an advantageous effect that the manufacturing cost can be greatly reduced.

  In a preferred embodiment of the hose connection device of the present invention, a part or all of the hole of the hose hold member may have a taper. By having a taper, the hose can be easily inserted.

  In a preferred embodiment, the tapered portion of the taper has a pulling force in a direction opposite to the insertion direction of the hose. That is, it is possible to prevent the hose from coming off by having a pulling force in a direction opposite to the insertion direction of the hose at the tapered portion of the taper. That is, for example, the taper portion of the taper is not chamfered, so that when the hose is inserted, the taper portion of the taper contacts the hose at the contact point between the taper portion of the taper and the hose. Biting through can be prevented.

  In the aspect which does not utilize a taper part, you may make it have a thing like the return called a fishing hook in the said hole. That is, although it can insert smoothly with respect to the insertion direction of a hose, you may employ | adopt the structure which a hose becomes difficult to pull out by presence of the return installed in the hole. One or a plurality of the turns may be installed in the hole, and can be appropriately set according to the application.

  When a nipple is essential, such as a joint using a conventional nipple, a hose is required depending on the thickness, presence, etc. of the portion (a space in the depth direction is required to some extent). The use of hoses for members was limited. However, in the hose connection device of the present invention, the hose can be applied to the member even without the presence of a so-called nipple. Have.

  In addition, there are many types of joints that do not use nipples, but bolts are used in place of nipples, but the thickness and presence of bolts as well as nipples (still need some space in the depth direction). The application of the hose is restricted by the above. In other words, there are various types of joints, but all joints are presupposed that PT threads or PF threads are cut and female threads are installed on the application side, or nipples are an essential requirement. Therefore, it is necessary to secure the depth of the screw hole and the depth of the nipple. Since a PT screw or PF screw is made in the joint itself, a certain size reduction is restricted. On the other hand, in the present invention, it is possible to realize a mechanism for directly attaching a hose at the side of the application, and it is applicable not only to a large size but also to a reduced-sized application member.

  The fixing means is not particularly limited as long as it can prevent the hose from coming off. The position of the fixing means is not particularly limited, but from the viewpoint of effectively using a limited space, the inside of the hose hold member, for example, between the hose hold member and a member requiring insertion of the hose is preferable. . That is, on the outside of the hose hold member, in order to make effective use of the folding angle and the space, the hose hole member can be made thin, but further thickness is required. That is, on the outside of the hose hold member, a space in the thickness (insertion depth) direction is required in the same manner as a hose joint that requires nipples, bolts, and the like.

  Therefore, in a preferred embodiment, the fixing means can be provided between the hose hold member and the application member (application member requiring a hose) or in the application member. In a preferred embodiment, the fixing means is a hole that has a smaller cross-sectional area than the cross-sectional area of the hose in a direction perpendicular to the longitudinal direction of the hose and can be inserted in accordance with the shape of the hose. The cross-sectional area smaller than the cross-sectional area of the hose is, for example, when the hose is cylindrical, as long as the hose can be inserted into a hole having a diameter slightly smaller than the diameter (outer diameter) of the hose. This is because the structure is difficult to remove. How much of the hole has a small area depends on the size of the hose. In this hole, you may make it have a thing like a turn with a fishing hook. That is, although it can insert smoothly with respect to the insertion direction of a hose, you may employ | adopt the structure that a hose becomes difficult to pull out by presence of the return installed in the hole. One or a plurality of this return may be installed in the hole, and can be appropriately set according to the application. If the hole portion is given a higher coefficient of friction than the other portions constituting the hole, it is possible to further prevent the hose from coming off. That is, it may be a hole punched out by machining.

  This hole also has a function as a so-called sealing agent for preventing leakage of the medium flowing in the hose.

  The hose connection device of the present invention may further include a seal member that prevents leakage of a medium flowing through the hose. The seal member may be installed between the hole and the hose, or may be provided in a portion other than the hole. The position of the seal member is not particularly limited. Preferably, the seal member is an O-ring. In order to seal more effectively, the position of the seal member and the position of the O-ring are on the inside of the hose hold member, that is, the use member side. Thus, sealing can be performed without protruding to the outside, and the spatial arrangement can be used effectively. The material of the seal member is not particularly limited. A general sealing material can be used. For example, rubber or resin can be used.

  The hose connection device of the present invention has a very simple structure, and can be applied by changing the design to various existing devices. Below, although the example which applied the hose connection apparatus of this invention to the solenoid valve is shown, the use member which can apply the hose connection apparatus of this invention is not limited to a solenoid valve. For example, in addition to solenoid valves, a wide range of devices, members, etc. that require insertion of hoses in addition to various actuators, pistons, piston actuators, etc. Applicable.

  Moreover, the solenoid valve of this invention has the hose connection apparatus of this invention, It is characterized by the above-mentioned. In the solenoid valve of the present invention, the above description can be referred to for the hose connection device of the present invention.

  Next, the hose connection device and the solenoid valve of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram illustrating an example of a hose connection device according to an embodiment of the present invention. 1 is pressure air for driving a valve, 2 is a controlled gas, 3 is a hose, 4 is a hose hold member, 5 is a contact portion between a hose joint and a hose, 6 is a seal member (O-ring), 7 is a tapered portion, 8 Denotes a screw, 9 denotes a hole, and 10 denotes a fixing means (hole). As can be seen from the drawings, so-called nipples and bolts are not required, so that the thickness in the hose insertion direction (depth direction) can be extremely reduced. In FIG. 1, the hose hold member 4 uses a plate-like member. However, the hose hold member 4 may be integrally formed with a member that requires insertion of the hose and have the same effect as the hose hold member. . The tapered portion 7 has a taper as shown in the figure, and has a shape that tapers in the hose insertion direction. However, if it has a hole, it does not need to be particularly tapered. Reference numeral 5 denotes a contact portion between the hose hold member and the hose. If the hose hold member side of this portion is not chamfered, the coefficient of friction increases and the inserted hose is more difficult to pull out. When gas, liquid, or the like is injected into the hose and the pressure in the hose increases, the hose is more difficult to disconnect. When the friction coefficient of the contact portion between the hose hold member and the hose is higher than that of the other portions of the hose hold member, the hose is less likely to come off. In order to make it difficult to come off, one or more portions may be provided on the hose hold member that serve as a return in the fishing hook as described above. If it does in this way, it will become a structure where a hose becomes still more difficult to remove.

  In the drawing, an O-ring is used as the seal member 6. This can prevent leakage of the medium flowing in the hose, for example, the pressure AIR. Also, the fixing means 10, for example, the hole, has a structure that makes it difficult for the hose to come out when gas or liquid is introduced into the hose and the pressure in the hose increases. In this embodiment, a hole in which an O-ring can be inserted is cut on the application side that requires a hose, the O-ring is inserted into the hole, and then pressed by a hose hold member.

  It should be noted that the surface roughness of the hole of the fixing means 10 is preferably good so that the outer surface of the hose is in close contact with the inner surface of the hole of the fixing means 10. In addition, since a hose expands with internal pressure, the adhesion degree is further improved. Accordingly, although it is not necessary to arrange the seal member 6, for example, an O-ring, it is desirable to arrange the seal member 6, for example, an O-ring, from the viewpoint of further improving safety. Further, when considering the processing cost in the mass production process, it is necessary to consider a certain degree of surface roughness variation. Therefore, when a minute scratch or the like is attached, even when leakage occurs through the gap between the scratches, the provision of the seal member 6, for example, an O-ring, is expected to further increase the safety. it can.

  In addition, in the example of FIG. 1, an example at the time of applying a hose connection apparatus to a solenoid valve is shown.

  Next, FIG. 2 is a diagram showing an example of a solenoid valve to which the hose connection device according to one embodiment of the present invention can be applied. 20 is a cylinder head, 21 is a spring, 22 is a piston, 23 is an isolation seal holder, 24 is an isolation seal (including an O-ring), 25 is a valve head, 26 is a solenoid block, 27 is a controlled gas output port, Reference numeral 31 denotes an O-ring.

  FIG. 5 is a diagram showing an example of a solenoid valve to which the hose connection device according to one embodiment of the present invention can be applied. (a) shows an example of the top view of the solenoid valve incorporating the hose connection device of the present invention and the hose connection device in a state where the valve is closed. (B) shows an example of a side view of a solenoid valve incorporating the hose connection device of the present invention in a state where the valve is closed. (C) shows an example of a top view of the hose connection device of the present invention and the solenoid valve incorporating the hose connection device in a state where the valve is open. (D) shows an example of a side view of a solenoid valve incorporating the hose connection device of the present invention in a state where the valve is open.

  The operation of the solenoid valve will be briefly described with reference to FIGS. The state of FIG. 5 (a) is a state in which the valve is closed. In this case, the valve driving pressure Air is not introduced from 1. When it is desired to open the valve, the valve driving pressure Air is supplied. The air from 1 does not go in the direction of the valve head 25 by the isolation seal presser 23 or the isolation seal 24 but acts to compress the spring 21. Then, the valve head 25 can open the valve. When the valve is opened, a medium such as gas or liquid flowing in the controlled gas introduction hose 2 is output from the controlled gas output port 27.

  In FIG. 5, the length of A, B, C, etc., the inner diameter, the outer diameter, the shape, etc. of the hose are not particularly limited, but according to the actually performed example, A is 30 mm, B is 20 mm, C Was 15mm. The hose size had an outer diameter of 3 mm and an inner diameter of 2 mm.

  FIG. 3 is a diagram illustrating an example of a hose hold member portion of the hose connection device according to an embodiment of the present invention. (A) shows sectional drawing, (b) shows the top view seen from the top. For example, when the outer diameter of the hose is 3 mm, in this example, the taper portion of the taper portion is set to 2.9 to 2.95 mm. Further, the inner diameter of the hole portion of the fixing means is also smaller than the outer diameter of the hose, and is specifically set to φ2.95 mm. It is not specifically limited to these specific values, and is not particularly limited as long as the hose can be fixed. Specifically, the design can be changed depending on the material, hardness, shape, use of the application member, etc. of the hose.

  In this embodiment, the taper angle is set to 30 ° as shown in the figure. These angles are not particularly limited as long as the hose can be fixed. Specifically, the design can be changed depending on the material and shape of the hose, the use of the application member, and the like.

  In the figure, there are two holes that do not have a taper, but these holes are for attaching a hose hold member to the application member, for example, a hole for passing a screw or the like. As long as the hose hold member can be fixed and attached to other parts, the hose hold member can be attached using a conventional method without being limited to the screw. In this case, these two holes would be unnecessary.

  Next, FIG. 4 is a figure which shows an example of the joint part of the hose connection apparatus in one embodiment of this invention. The difference from the embodiment of FIG. 3 is that FIG. 4 shows an example of a hose joint that can connect a plurality of hoses.

  The hose connection device of the present invention can be used in a wide range of fields regardless of the field because it enables the connection of the hose even in a very limited space regardless of whether it is large or small. . That is, it is possible to apply the present invention even in a space that could not be incorporated so far, and it is expected to contribute to the miniaturization of industrial devices and the improvement of the integration of mechanism elements.

1 Valve drive pressure air 2 Controlled gas 3 Hose 4 Hose hold member 5 Contact portion between hose hold member and hose 6 Seal member (O-ring)
7 Tapered portion 8 Screw for fixing the hose hold member to the member (application member) 9 Pressure gas introduction path 10 Fixing means (hole, etc.)
20 Cylinder head 21 Spring 22 Piston 23 Isolation seal holder 24 Isolation seal (including O-ring)
25 Valve head 26 Solenoid block 27 Controlled gas output port 28 O-ring 29 O-ring 30 O-ring 31 O-ring

Claims (8)

  A hose connection device comprising a hose hold member having a hole through which a hose can be passed through, and a fixing means for preventing the hose from coming off when the hose is inserted into the hose hold member.   2. The hole according to claim 1, wherein the fixing means has a cross-sectional area smaller than a cross-sectional area of the hose in a direction perpendicular to a longitudinal direction of the hose and can be inserted in accordance with the shape of the hose. Hose connection device.   3. The hose connection device according to claim 1, wherein a part or all of the hole of the hose hold member has a taper.   The hose connection device according to any one of claims 1 to 3, wherein the tapered portion of the taper has a pulling force in a direction opposite to an insertion direction of the hose.   The hose connection device according to any one of claims 1 to 4, wherein a taper portion of the taper and a contact portion with the hose are not chamfered.   The hose connection device according to any one of claims 1 to 5, further comprising a seal member that prevents leakage of a medium flowing through the hose.   The hose connection device according to claim 6, wherein the seal member is an O-ring.   A solenoid valve having the hose connection device according to claim 1.

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