JP5001990B2 - Gas injection tube holder, gas injection tube mounting portion and portable gas injection cleaning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas jet tube holder capable of attaching the gas jet tube of a portable gas jet cleaning instrument to the inside of a metal valve body in a freely detachable manner so as to prevent the same from flying out during use, a gas jet tube attaching part, and the portable gas jet cleaning instrument. <P>SOLUTION: The gas jet tube holder is attached to the inner surface of the gas discharge opening part of a pressure reducing device body connected to a small-sized gas cartridge and composed of a holder body and a support projection. The holder body has the insertion part of a gas jet tube extending in its length direction therein and the support projection is provided to the intermediate part in the length direction of the holder body to elastically grasp the gas jet tube inserted in the holder body. The holder body is divided in a circumferential direction together with the support projection. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention is, for example, a gas injection tube holder for a gas injection cleaning device used for cleaning an automatic ticket gate, precision equipment inside an ATM, etc. by gas purging, a gas injection tube mounting portion, and a portable device. The present invention relates to a mold gas injection cleaning tool. Here, the “gas injection tube” means, for example, an outer diameter used to inject carbon dioxide released from a small carbon dioxide cartridge through a pressure regulating valve toward a predetermined location such as a cleaning location: 2 to 4 mm This refers to a flexible plastic tube having an inner diameter of about 0.5 to 1 mm and a length of about 50 to 200 mm.

  There is known a dry snow jet cleaning apparatus that uses liquefied carbon dioxide gas as dry snow for cleaning recycled parts such as copying machines (Patent Document 1). However, such a dry snow jet cleaning apparatus is large-scale, and is used by being fixed at a certain location, and is stored in a relatively small and narrow space such as an automatic ticket gate or ATM. It is not suitable for gas purging and cleaning while moving precision equipment such as equipment. For gas purging at such locations, portable gas jetting and aerosol cleaning tools that use a small gas cylinder and eject carbon dioxide or the like toward a target location are widely used.

  As such a tool, a purge gas source is a small carbon dioxide gas cartridge with a capacity of less than 100 ml and a pressure of about 6 MPa, and a gas injection tube (orifice) attached via a pressure reducing mechanism is attached to a gas injection tube. There is a portable gas jet cleaning device that sprays the gas toward the cleaning site.

  Specifically, as shown in FIG. 7, such a gas jet cleaning instrument is provided with a pressure reducing valve 2 attached to a small carbon dioxide cartridge 1 and inserted into a main body 3 of the pressure reducing valve via a cut nozzle 4. Carbon dioxide gas is introduced and the operation button 5 is pressed to guide the decompressed gas to the opening 7. An orifice 6 and a gas injection tube 8 are attached to the opening 7, whereby the carbon dioxide gas discharged from the orifice 6 is sprayed to a predetermined purge location through the gas injection tube 8.

  However, since the main body 3 is made of a zinc alloy, the pressure reducing valve 2 has a taper (θ) of about 1 ° when the gas injection tube 8 is attached to the tube mounting portion 9 of the opening 7. Here, the gas injection tube 8 made of polypropylene is pushed in and fixed by elastic deformation thereof. However, when the gas injection tube 8 is attached in this way, the gas injection tube 8 moves outward (in the direction of the arrow) due to the tube tip coming into contact with the device during the cleaning operation, thereby fixing force. There is a problem in that the number of drops rapidly decreases. Further, if the outer diameter of the gas injection tube 8 varies, the gas injection tube 8 cannot be pushed in until it comes into contact with the orifice 6 as shown in FIG. Accidents of flying out may occur. When such an accident occurs, the cleaning operation is temporarily interrupted, and it is forced to perform a large-scale operation such as checking whether the precision instrument portion is damaged or searching for the ejected nozzle. As such a tube fixing means, Patent Document 2 discloses a tube joint using a flexible washer.

JP 2001-177116 A Japanese Patent Laid-Open No. 10-61842

  However, if the gas injection tube is attached to a portable gas injection cleaning instrument for cleaning an apparatus using the tube joint described in Patent Document 2, the apparatus itself becomes large and the cost is increased. Since the apparatus configuration is complicated, it is difficult to use the apparatus as a holder for a gas injection tube for a small portable gas injection cleaning instrument as in the present invention.

  In light of the above circumstances, the present invention provides a simple mechanism for detaching a gas injection tube into a metal valve body of a portable gas injection cleaning tool and preventing it from being ejected during use. A gas injection tube holder, a gas injection tube mounting portion, and a portable gas injection cleaning device are proposed.

The present invention is a gas injection tube holder attached to the inner surface of a gas discharge opening of a decompressor body connected to a small gas cartridge,
The gas injection tube holder comprises a holder body and a support protrusion,
The holder body has an insertion portion of a gas injection tube extending in the length direction therein,
The support protrusion is provided at an intermediate portion in the length direction of the holder main body, elastically grips a gas injection tube inserted into the holder main body, and
The said holder main body is divided | segmented into the circumferential direction with the said support protrusion.

  The gas injection tube holder may be integrated with an orifice.

It can be a mounting portion of the gas injection tube as a the gas injection tube holder that is directly fitted and fixed to the opening of the pressure reducing valve body.

In addition, the gas injection tube holder can have its main body integrated with a dish-like body having an opening at the center in the radial direction at the rear end thereof. Can be integrated with the orifice, and can be directly fitted and fixed to the opening of the pressure reducing valve body as the attachment portion of the gas injection tube.

  A portable gas-jet cleaning tool can be configured as having the gas jet tube mounting portion.

  According to the present invention, the gas injection tube set and used in the portable gas injection cleaning tool can be detachably attached to the metal valve main body and can be attached so as not to jump out during use.

It is sectional drawing which shows the whole structure of the gas injection tube holder which concerns on this invention, and the portable gas injection cleaning instrument which set it. It is sectional drawing which shows the assembly | attachment state of the attachment part of a gas injection tube. It is sectional drawing which shows the assembly | attachment point to the pressure-reduction valve main body of a gas injection tube holder and a gas injection tube. It is a perspective view of the gas injection tube holder integrated with the orifice. It is explanatory drawing of the flow state of the injection gas at the time of applying this invention. It is sectional drawing which concerns on other embodiment of this invention. It is sectional drawing which shows the whole structure of the portable gas injection cleaning instrument which has the attachment part of the conventional gas injection tube. It is explanatory drawing of the ejection mechanism of the gas injection tube in the conventional portable gas injection cleaner.

  FIG. 1 is a cross-sectional view showing an overall configuration of a gas injection tube holder according to the present invention and a portable gas injection cleaning tool in which the gas injection tube holder is set. In the portable gas jet cleaning device, as already described as a conventional example, the pressure reducing valve 2 is attached to the small carbon dioxide cartridge 1, and the carbon dioxide gas flows into the main body 3 of the pressure reducing valve through the cut nozzle 4. The pressure-reduced gas is guided to the opening 7 by pressing the operation button 5. An orifice 6 and a gas injection tube 8 are attached to the opening 7, whereby the carbon dioxide gas discharged from the orifice 6 is sprayed to a predetermined purge location through the gas injection tube 8.

  In the present invention, the gas injection tube holder 10 shown in FIGS. 2 to 4 is set in the opening 7, and the gas injection tube 8 is inserted and supported in the gas injection tube holder 10. Yes.

  As shown in FIGS. 3 and 4, the gas injection tube holder 10 is configured such that the outer shell is provided with a support protrusion 14 on a substantially cylindrical holder body 11 that is slightly tapered as a whole. The inside of the main body 11 is an insertion portion for the gas injection tube. On the other hand, the support protrusion 14 is provided at an intermediate portion in the length direction of the holder body 11, preferably at a substantially central portion, so that the gas injection tube holder 10 can be set in the opening 7 of the decompression valve body 3. It is like that.

  The support protrusion 14 can support the main body 11 of the gas injection tube holder 10 by elastically deforming in the diameter direction. Therefore, when the gas injection tube holder 10 configured as described above is set in the opening, the gas injection tube 8 inserted into the holder main body 11 is held while being slightly pressed from its side surface by elastic deformation. Will be able to. Furthermore, in the present invention, since the support protrusion 14 is placed at the intermediate portion in the length direction of the main body 11 of the gas injection tube holder 10, the holding force due to the elastic deformation applied to the gas injection tube 8 is supported. It appears strongly at the position where the protrusion 14 is arranged. In particular, when the arrangement position is placed at a substantially central portion in the length direction, the gas injection tube 8 can be supported in a balanced manner from the side surface. As a result, even if the tip of the gas injection tube 8 hits various members of an automatic ticket gate, which is a cleaning target, during the gas purge operation, the gas injection tube 8 is not easily detached.

  In addition to the above configuration, in the gas injection tube holder 10 of the present invention, the holder body 11 is divided in the circumferential direction together with the support protrusions 14 as shown in FIGS. Specifically, support protrusions 14 are arranged in the vicinity of the center of each segment of the divided holder body 11, and these are assembled into a cylindrical shape as a whole and integrated with the orifice 6. This integration is performed by integrating the rear end portion of the holder body 11 and the front end portion of the orifice 6 as shown in FIGS.

  By adopting the above configuration, it is possible to prevent a jumping force as shown in the conventional example (FIG. 8) from being applied. That is, as described above, when the holder body 11 is divided in the circumferential direction, even if the gas injection tube 8 is set apart from the orifice 6 as shown in FIG. As shown by the arrows, part of the gas flowing in the gas injection tube 8 and part of the gas flows through the slit 16 formed by the dividing surface, and the force for pushing the gas injection tube 8 from the back is It will be very small.

  In order to set the gas injection tube holder 10 of the present invention in the opening 7 of the pressure reducing valve body 3, as already described with reference to FIGS. 3 and 4, the gas injection tube holder 10 and the orifice 6 are integrated, It is preferable to fit the leg portion of the orifice 6 to the innermost portion 7b (gas outflow path) of the opening 7 of the pressure reducing valve main body 3 from the viewpoint of efficiency of the manufacturing process. The orifice 6 and the gas injection tube holder 10 are preferably formed by injection molding as an integral part.

  FIG. 3 shows a procedure for setting the gas injection tube holder 10 integrated with the orifice 6 in the opening 7 of the pressure reducing valve body 3. The gas injection tube 8 and the gas injection tube holder 10 are both made of polypropylene in this example, and the orifice portion is fitted to the innermost portion 7b of the opening 7 of the pressure reducing valve body 3, and the opening front side 7a is The gas injection tube holder 10 is set so that the support protrusion 14 of the gas injection tube holder 10 comes into contact therewith. When the gas injection tube 8 is inserted in this state, the gas injection tube 8 is securely held by the elastic deformation of the radius method applied to the holder body 11 by the support protrusion 14 as described above. Become.

  In addition, as described above, the effect of the present invention is obtained by providing the support protrusion 14 at the intermediate portion in the length direction of the holder body 11, but in order to make the present invention easier to implement, For example, as shown in FIG. 6, the distal end portion of the holder body 11 is configured as a convex ring-shaped insertion port ring 12, and the inside thereof is formed as a mortar-shaped insertion port 13, and the gas injection tube 8 is inserted therethrough. It should be easy to do. Further, if the outer periphery of the insertion port ring 12 can be engaged with the inner surface of the opening 7 of the main body 3, the entire gas injection tube holder 10 can be stabilized.

  FIG. 6 shows a modified embodiment of the present invention. In this example, the gas injection tube holder 10 a and the orifice 6 b are manufactured as different parts, and these are assembled into the opening 7 of the pressure reducing valve body 3. In this case, the main body of the gas injection tube holder is integrated with a dish-like portion 21 having an opening 22 at the center in the radial direction at the rear end, while the orifice 6b is at the tip. The locking portion 23 is provided.

  In assembling the gas injection tube holder 10 and the orifice 6b into the opening 7 of the pressure reducing valve body 3, the orifice 6b is inserted into the opening 22 of the gas injection tube holder body as shown in FIG. What is necessary is just to set to the opening part 7 of the pressure-reducing valve main body 3 in the state which engaged the latching | locking part 23 of the orifice 6b. In this example as well, the insertion and holding of the gas injection tube 8 is performed by the mechanism already described, and it is still possible to prevent a jumping accident during use.

  According to the present invention, when a portable gas jet cleaning tool is used, the gas jet tube is held very stably, and a gas jet tube jumping accident, which has been a problem in the past, can be prevented. Further, since the gas injection tube holder used in the present invention supports and fixes the gas injection tube by elastic deformation, even if the diameter tolerance of the gas injection tube is large, the gas injection tube holder can be stably inserted into the gas injection tube holder. Support becomes possible.

  In the description of the above embodiment, the case where carbon dioxide gas is used as the purge gas has been taken up. However, the gas type is not limited to this, and for example, nitrogen gas or the like can also be used. In addition, the gas injection tube holder of the present invention can be widely used for portable gas injection instruments, and can be applied to, for example, an injection part of a gas-liquid mixture containing aerosol.

1: Small carbon dioxide cartridge 2: Pressure reducing valve 3: Pressure reducing valve main body 4: Cut nozzle 5: Operation button 6: Orifice 7: Opening 8: Gas injection tube 10: Gas injection tube holder 11: Holder main body 12: Insertion Mouth 14: Support protrusion 16: Slit 21: Dish-shaped part 22: Opening part 23: Engaging part

Claims (6)

A gas injection tube holder attached to the inner surface of a gas discharge opening of a decompressor body connected to a small gas cartridge,
The gas injection tube holder comprises a holder body and a support protrusion,
The holder body has an insertion portion of a gas injection tube extending in the length direction therein,
The support protrusion is provided at an intermediate portion in the length direction of the holder main body, elastically grips a gas injection tube inserted into the holder main body, and
The gas injection tube holder, wherein the holder main body is divided in the circumferential direction together with the support protrusion.   The gas injection tube holder according to claim 1, wherein the gas injection tube holder is integrated with an orifice. A gas injection tube mounting portion according to claim 2, wherein the gas injection tube holder is directly fitted and fixed to the opening of the decompression valve main body .   The gas injection tube holder according to claim 1, wherein the main body of the gas injection tube holder is integrated with a dish-like body having an opening at a radial center at the rear end. The gas injection tube holder according to claim 4, wherein the gas injection tube holder is integrated with an orifice, and is directly fitted into and fixed to the opening of the pressure reducing valve body. Mounting part. A portable gas jet cleaning device comprising the attachment portion of the gas jet tube according to claim 3.

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