JP6267415B2 - Drug diffusion device - Google Patents

Description

  The present invention relates to a drug diffusion device for releasing a drug such as a pest control agent.

  Conventionally, as this type of drug diffusing device, for example, as disclosed in Patent Document 1, a pressure-resistant container in which compressed gas is accommodated together with a drug and a stem of a quantitative injection valve provided in the pressure-resistant container are operated. Devices with injection buttons are known. In this case, when the user presses the injection button, the stem is pressed, the quantitative injection valve is opened, and the medicine in the pressure-resistant container is sprayed into the air by the compressed gas.

  Further, the medicine diffusion device of Patent Document 1 is provided with a malfunction prevention lever for preventing the injection button from being accidentally pressed. The malfunction prevention lever is swingably attached to the apparatus main body. When the malfunction prevention lever swings in one direction, the stopper part of the malfunction prevention lever enters between the injection button and the main body of the device and cannot press the injection button. In a state where the oscillating member is swung in the other direction, the stopper portion can come out from between the spray button and the apparatus main body to push the spray button.

JP 2009-254281 A

  In the device of Patent Document 1, the malfunction prevention lever is swung when switching between an operable state in which the injection button can be operated and an inoperable state in which the injection button cannot be operated.

  However, since the stopper part of the malfunction prevention lever is covered with the injection button and cannot be seen from the outside, the malfunction prevention lever can be grasped by the user under normal use conditions. Can not. Therefore, even though the malfunction prevention lever is actually in an operable state, the user may assume that the malfunction prevention lever is in an inoperable state, and the malfunction prevention lever function cannot always be fully realized. It is done.

  This invention is made | formed in view of this point, The place made into the objective is to prevent that a user accidentally injects a chemical | medical agent.

  In the present invention, in order to achieve the above object, the malfunction prevention mechanism is operated so that the button becomes inoperable when the injection button is not operated.

The first invention is
A container for containing a medicine;
An injection button for injecting a certain amount of medicine in the container;
A malfunction prevention mechanism for switching the injection button between an operable state and an inoperable state, and the malfunction prevention mechanism is configured so that the injection button is in an inoperable state when the injection button is not operated. In a drug diffusion device that operates as follows:
The malfunction prevention mechanism includes a lock lever and a biasing member that biases the lock lever, and the biasing member is housed inside the apparatus main body.
The apparatus body is provided with a lever support shaft that pivotably supports the lock lever so as to protrude upward,
An insertion hole through which the lever support shaft is inserted is formed in the middle portion in the longitudinal direction of the lock lever,
The distal end side of the lock lever from the insertion hole is a part that prevents the injection button from moving in the operation direction by contacting the injection button pushed in the operation direction. The part that prevents the movement includes a position where the movement of the injection button is prevented by moving the lock lever around the lever support shaft and the operation of the injection button is disabled. Can be switched to a position to allow operation in the direction and enable operation,
The base end side than the insertion hole of the lock lever, the user plate-shaped operation unit operated to swing the lock lever is provided so as to extend in the swing direction around the supporting shaft for the lever, the An intermediate plate portion is provided that extends upward from the operation portion to the portion where the insertion hole is formed and is formed so that the cross-sectional area increases toward the lower side,
The biasing member is in contact with a lower side surface of the intermediate plate portion between the insertion hole and the operation portion in the lock lever, and prevents the movement of the injection button in the operation direction. A biasing force is applied to the lock lever so that the lock lever swings.

  According to this configuration, when the user is not operating the injection button, the malfunction prevention mechanism can be operated so that the injection button becomes inoperable. Accordingly, it is possible to sufficiently exhibit the function of the malfunction prevention mechanism that prevents the injection button from being accidentally pressed.

  In addition, since the lock member of the malfunction prevention mechanism is urged to the inoperable position by the urging member, the lock member can be reliably positioned at the inoperable position when the user is not operating the injection button. become.

  Further, it is possible to reliably apply the urging force by the urging member to the lock member while accommodating the urging member inside the apparatus main body and collecting them in a compact manner.

  According to the first invention, since the malfunction prevention mechanism can be operated so that the ejection button becomes inoperable when the ejection button is not operated, the function of the malfunction prevention mechanism is sufficient. It can be demonstrated.

  In addition, since the lock member of the malfunction prevention mechanism is urged to the position where the injection button cannot be operated, it is possible to reliably prevent the injection button from being accidentally pressed.

  In addition, since the urging member is housed inside the apparatus main body, the lock member can be reliably positioned at the inoperable position by the urging force of the urging member, while the medicine-dispersing device is compactly packed and has a good appearance.

It is a perspective view of the medicine diffusion device concerning an embodiment. It is sectional drawing of a chemical | medical agent diffusion apparatus. FIG. 2 is a view corresponding to FIG. 1 with a cover removed. It is the perspective view which looked at the apparatus main body of the state which removed the button for injection from the upper direction. It is a disassembled perspective view of an apparatus main body. FIG. 5 is a view corresponding to FIG. 4 when the injection button is in an operable state. It is a fragmentary sectional view of the upper part of a medicine diffusion device in case a button for injection is in an operable state. FIG. 8 is a view corresponding to FIG. 7 when the injection button is in an inoperable state.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

  FIG. 1 shows a drug diffusion device 1 according to an embodiment of the present invention. As shown in FIG. 2, the drug diffusion device 1 includes a device main body 2 and a drug container 3 for storing the drug. The apparatus main body 2 includes an internal structure 10 and a cover 11 that covers the internal structure 10. As shown in FIG. 3, the internal structure 10 includes an injection button 12 for injecting the medicine in the medicine container 3 and an error for switching the injection button 12 between an operable state and an inoperable state. An operation prevention mechanism 13 is provided.

  In the description of this embodiment, for convenience of explanation, the side that is the user side in the usage state is referred to as the near side, and the side that is opposite to the user is referred to as the back side. The right side as viewed from the right side is referred to as the right side, and the left side as viewed from the user is referred to as the left side.

  As shown in FIG. 2, the medicine container 3 is a cylindrical pressure resistant container. The medicine container 3 is composed of a member having translucency, and therefore, the remaining amount of the medicine inside can be visually recognized from the outside.

  A quantitative injection valve 3 a is provided on the upper part of the medicine container 3. The fixed quantity injection valve 3 a has a valve stem 3 b that protrudes upward from the upper center of the medicine container 3. As shown in FIGS. 4 and 5, a medicine discharge port 3 c is opened at the upper end of the valve stem 3 b. The valve stem 3b is for operating a valve body (not shown) of the metering injection valve 3a. Although not shown, the valve stem 3b is always urged upward by a spring from below. The fixed injection valve 3a is closed when the valve stem 3b is pushed up, while the fixed injection valve 3a is opened by pressing down the valve stem 3b against the biasing force of the spring. This fixed quantity injection valve 3a has a known structure that is configured to release a fixed amount (for example, about 0.1 ml to 0.2 ml) of the medicine in the medicine container 3 by one opening operation.

  Examples of the medicine accommodated in the medicine container 3 include pyrethroid insecticides, carbamate insecticides, organophosphorus insecticides, and the like, but pyrethroid insecticides are preferable. Among the pyrethroid insecticides, transfluthrin (trade name: biothrin), metfurthrin (trade name: Eminence), empentrin (trade name: papersulin), terrareslin, profluthrin, etc. Is good. In addition, a chemical | medical agent is not limited to this, Other things may be used as long as it has the same pest control effect. Further, the drug may be used as a stock solution by dissolving only the drug or the drug in an organic solvent composed of an aliphatic hydrocarbon or alcohol.

  The drug container 3 also contains a propellant together with the above-mentioned drug. Examples of the propellant include liquefied petroleum gas (LPG), dimethyl ether (DME), halogenated hydrocarbon, compressed nitrogen, and compressed carbon dioxide. And at least one selected from the group consisting of In addition, a propellant is not limited to this, Other things may be used if it has the same function. Further, the medicine container 3 may contain a solution and the like together with the medicine and the propellant.

  The diameter of the medicine discharge port 3c is preferably small in order to make the medicine released from the medicine container 3 into very fine mist-like particles, and the range corresponds to a circle having a diameter of 1.5 mm. The opening area is preferably equal to or smaller than the opening area, and more preferably the opening area corresponding to a circle having a diameter of 0.3 mm to 0.7 mm.

  By reducing the diameter of the discharge port 3c, the drug passes through the pores at a high speed when the drug is released. As a result, the particle size of the released drug can be as small as 60 μm or less, and the best value is 5 to 15 μm. This allows the drug to float in a room or the like over a long period of time, Moreover, even if the medicine adheres to the floor or wall, the medicine is evaporated again by the thermal energy of about room temperature and drifts in the space. By these things, the pest control effect in a chemical | medical agent can be maintained over a long time. At this time, the pest control effect of the drug lasts for about 12 hours in the case of a room of about 4 tatami halves to 8 tatami mats by one release of the drug, that is, spraying.

  The internal structure 10 includes a substantially elliptic bottom plate portion 30 extending from the near side to the back side, a substantially cylindrical drug container housing portion 31 extending upward from the bottom plate portion 30, and a vertical plate portion extending upward from the bottom plate portion 30. 33. The medicine container housing portion 31 is located closer to the back side of the bottom plate portion 30, and the vertical plate portion 33 is located closer to the front side of the bottom plate portion 30. As shown in FIG. 2, an accommodation hole 30 c for accommodating the medicine in the medicine container housing portion 31 is formed on the back side of the bottom plate portion 30. The accommodation hole 30c is closed by a detachable cap C.

  The medicine container housing part 31 is formed so as to surround the outer peripheral surface and the upper part of the medicine container 3. As shown in FIG. 3 and the like, a through-hole 31 a is formed in the peripheral wall portion of the medicine container housing portion 31. A stem insertion hole 31b through which the valve stem 3b of the drug container 3 is inserted is formed at a substantially central portion of the upper wall portion of the drug container housing 31. The valve stem 3b protrudes upward from the stem insertion hole 31b.

  A button support shaft 35 that supports the spray button 12 in a swingable manner is provided in the vicinity of the inner edge of the upper wall portion of the medicine container housing portion 31. The button support shaft 35 extends in the left-right direction at the center in the left-right direction of the upper wall portion of the drug container housing 31. A first stopper 37 and a second stopper 38 are formed in front of the stem insertion hole 31 b in the upper wall portion of the medicine container housing portion 31. The first stopper 37 is located behind the second stopper 38. The first stopper 37 is formed in a plate shape that protrudes upward and extends in the left-right direction, and is offset to the left side of the upper wall portion of the medicine container housing portion 31. The second stopper 38 is formed in a plate shape extending substantially parallel to the first stopper 37, and is displaced to the right of the upper wall portion of the medicine container housing portion 31.

  Further, on the front side of the upper wall portion of the medicine container housing portion 31 with respect to the second stopper 38, a lever support shaft 39 that rotatably supports a lock lever (lock member) 50 constituting the malfunction prevention mechanism 13. Is formed so as to protrude upward.

  The vertical plate portion 33 of the internal structure 10 is integrated with the peripheral wall portion of the drug container housing portion 31. An upper plate portion 34 extending substantially horizontally is formed on the upper portion of the vertical plate portion 33. A spring support plate 34a that supports a spring 51, which will be described later, is provided on the left side of the upper surface of the upper plate portion 34 so as to protrude upward and extend in the depth direction.

  As shown in FIG. 3, the injection button 12 includes a pressing plate portion 40 that extends from the near side to the back side, and a peripheral wall portion 41 that extends downward from the peripheral edge portion of the pressing plate portion 40. The pressing plate portion 40 is formed so as to cover most of the upper wall portion of the drug container housing portion 31. The vertical dimension of the peripheral wall 41 is set longer on the near side than on the far side. On the back side of the peripheral wall portion 41, a pair of support plate portions 42 projecting downward are formed at intervals in the left-right direction. Each support plate portion 42 is formed with an insertion hole 42a penetrating in the left-right direction. The left and right end portions of the button support shaft 35 are inserted through the insertion holes 42a. The button support shaft 35 is rotatable in the insertion hole 42a in a state where the button support shaft 35 is inserted into the insertion hole 42a. Accordingly, the injection button 12 swings up and down around the button support shaft 35.

  The pressing plate portion 40 of the injection button 12 is formed so that a cylindrical portion 46 into which the valve stem 3b is fitted projects downward at a portion facing the upper end of the valve stem 3b. The projecting dimension of the cylindrical portion 46 is set to be shorter than the vertical dimension of the valve stem 3b. In addition, an injection hole 47 opening on the upper surface of the pressing plate portion 40 is formed on the back side of the pressing plate portion 40. The injection hole 47 communicates with the internal space of the cylindrical portion 46.

  The malfunction prevention mechanism 13 includes a lock lever 50 and a spring 51 that biases the lock lever 50. The lock lever 50 includes an operation plate portion 52 extending along the upper surface of the upper plate portion 34, an intermediate plate portion 53 extending upward from the upper surface of the operation plate portion 52, and an upper end of the intermediate plate portion 53. And a rod-like portion 54 extending along the upper wall portion.

  The operation plate portion 52 extends from the back side of the upper plate portion 34 to the front side. On the front side of the operation plate portion 52, a projecting piece 52a that protrudes toward the front side is formed. Further, the intermediate plate portion 53 is located on the back side of the operation plate portion 52.

  In the vicinity of the intermediate plate portion 53 of the rod-like portion 54, an insertion hole 54a through which the lever support shaft 39 is inserted is formed so as to penetrate in the vertical direction. The lever support shaft 39 is rotatable in the insertion hole 54a in a state where the lever support shaft 39 is inserted into the insertion hole 54a. Therefore, the lock lever 50 swings around the lever support shaft 39 in the left-right direction.

  As shown in FIG. 4, the longitudinal intermediate portion of the rod-shaped portion 54 passes between the first stopper 37 and the second stopper 38 and is bent to the left and right so as to avoid the stoppers 37 and 38. The distal end side (back side) of the rod-shaped portion 54 is configured by a curved portion 54b that is curved so as to surround the outer peripheral surface of the valve stem 3b protruding from the upper wall portion of the drug container housing portion 31 from the right side. The end of the curved portion 54b extends leftward.

  The intermediate plate portion 53 of the lock lever 50 and the spring support plate 34a of the upper plate portion 34 are arranged at an interval in the left-right direction, and between the intermediate plate portion 53 and the spring support plate 34a, A spring 51 is arranged. The spring 51 has a posture in which the center line extends in the left-right direction, and one end is in contact with the right side of the spring support plate 34 a and the other end is in contact with the left side of the intermediate plate 53. The spring force of the spring 51 acts to push the intermediate plate portion 53 of the lock lever 50 to the right side.

  As shown in FIG. 2, the cover 11 is configured by a member different from the internal structure 10. As shown in FIG. 1, the injection button 12 protrudes upward from the upper part of the cover 11. On the front side of the cover 11, a projecting piece insertion hole 11 a through which the projecting piece 52 a of the operation plate portion 52 of the lock lever 50 is inserted is formed below the spray button 12. The protruding piece insertion hole 11a has a shape that is long in the left-right direction so as to correspond to the swinging range of the lock lever 50 in the left-right direction.

  Further, the cover 11 is formed with a through hole 11 b corresponding to the through hole 31 a of the medicine container housing portion 31. Thereby, since the medicine container 3 can be visually recognized from the outside of the cover 11, the remaining amount of medicine can be easily grasped without taking out the medicine container 3 from the medicine container housing portion 31. Moreover, when the medicine is colored, the color of the medicine can be used as a part of the design of the medicine diffusion device 1, and the design can be improved.

  As shown in FIGS. 4 and 8, when the lock lever 50 is swung so that the operation plate portion 52 moves to the right, the bending portion 54b moves to the left and the rod-like portion 54 comes into contact with the first stopper 37. The lock lever 50 is prevented from further swinging. In this state, the curved portion 54b approaches the outer peripheral surface of the valve stem 3b and is positioned between the upper wall portion of the medicine container housing portion 31 and the lower end surface of the cylindrical portion 46 of the injection button 12. . Therefore, even if the injection button 12 is pushed down, the tube portion 46 abuts against the curved portion 54b of the lock lever 50 and the injection button 12 is not lowered, so that the valve stem 3b is not pushed down, and no medicine is injected. This state is an inoperable state in which the operation of the injection button 12 is impossible, and therefore, the position of the lock lever 50 is in an inoperable position where the injection button 12 cannot be operated.

  On the other hand, as shown in FIGS. 6 and 7, when the lock lever 50 is swung so that the operation plate portion 52 moves to the left, the curved portion 54b moves to the right and the rod-like portion 54 becomes the second stopper 38. The abutment prevents the lock lever 50 from further swinging. In this state, the curved portion 54 b is separated from the outer peripheral surface of the valve stem 3 b and comes out from between the upper wall portion of the medicine container housing portion 31 and the cylindrical portion 46 of the injection button 12. Therefore, when the injection button 12 is pushed down, the valve stem 3b is fitted into the cylindrical portion 46 and the valve stem 3b is pushed down. Then, the quantitative injection valve 3a is opened. This state is an operable state in which the injection button 12 can be operated. Therefore, the position of the lock lever 50 is in an operable position that allows the injection button 12 to be operated.

  When the fixed injection valve 3a is in the open state, the medicine in the medicine container 3 is discharged from the discharge port 3c, passes through the cylindrical portion 46 and the injection hole 47, and is diffused into the air. Since the amount of the drug diffused at this time is controlled to be a constant amount by the quantitative injection valve 3a, the amount of the drug diffused does not change even if the injection button 12 is kept pressed for a long time.

  Thus, the malfunction prevention mechanism 13 switches the injection button 12 between an operable state and an inoperable state. Further, the lock lever 50 moves between an operable position (FIGS. 6 and 7) where the injection button 12 can be operated and an unoperable position (FIGS. 4 and 8) where it cannot be operated. It is like that. Further, the spring 51 is a biasing member that constantly biases the lock lever 50 to the inoperable position.

  When the finger is released from the injection button 12 that is pressed down, the injection button 12 is pushed back upward by the ascending force of the valve stem 3b, and the metering injection valve 3a is closed. Furthermore, since the lock lever 50 is urged toward the inoperable position by the spring 51, the lock lever 50 swings to the inoperable position. At this time, the bending portion 54b moves to the left, and the bending portion 54b enters between the tube portion 46 and the upper wall portion of the medicine container housing portion 31, and the lock lever 50 is reliably moved to the inoperable position. can do.

  Thus, the malfunction prevention mechanism 13 operates so that the injection button 12 becomes inoperable when the injection button 12 is not operated. Since the operation of the malfunction prevention mechanism 13 is automatically performed by the force of the spring 51, even if the user does not operate the lock lever 50 after ejecting the medicine once, the finger is only released from the ejection button 12. It becomes impossible to push the button 12 for injection. Thereby, since the button 12 for injection cannot be pushed many times in a short time, it can prevent that a high concentration chemical | medical agent is diffused unnecessarily.

  When operating the injection button 12 that has been made inoperable by the malfunction prevention mechanism 13, a force is applied to the left side of the protruding piece 52 a of the lock lever 50, and the lock lever 50 is moved to the spring 51. The switch is moved to the operable position by swinging against the urging force.

  As described above, according to the medicine diffusion device 1 according to this embodiment, when the user is not operating the injection button 12, the malfunction prevention mechanism is set so that the injection button 12 becomes inoperable. 13 can be operated. Thereby, the function of the malfunction prevention mechanism 13 of preventing the button 12 for injection from being accidentally pushed can be exhibited sufficiently.

  Further, since the lock lever 50 of the malfunction prevention mechanism 13 is urged to the inoperable position by the spring 51, the lock lever 50 is reliably operated in the inoperable position when the user is not operating the injection button 12. Can be positioned.

  Further, since the spring 51 is housed in the apparatus main body 2, the lock lever 50 can be reliably positioned at the inoperable position by the urging force of the spring 51, while the medicine diffusion device 1 is compact and the appearance is good. .

  In the above-described embodiment, the malfunction prevention mechanism 13 includes the lock lever 50 and the spring 51. However, the present invention is not limited to this, and the injection button 12 is operated when the injection button 12 is not operated. You may make it prevent a malfunctioning using an electric actuator etc. so that it may become a disabled state.

  Further, instead of the lock lever 50, a lock plate (lock member) or the like may be used so that the spray button 12 becomes inoperable.

  Moreover, in the said embodiment, although the spring 51 of the malfunction prevention mechanism 13 is comprised by the coil spring, even if it uses various springs using the elasticity of not only this but a leaf | plate spring, a torsion spring, and a resin material, for example. Well, any material or shape may be used.

  Further, without providing a separate spring from the lock lever 50, the lock lever 50 itself may be used as an elastic body such as a resin material to obtain an urging force. Further, a spring may be integrally formed with the lock lever 50.

  Moreover, the chemical | medical agent accommodated in the chemical | medical agent container 3 may be a disinfectant, a fragrance | flavor, etc. other than a pest control agent, for example, and may accommodate the chemical | medical agent which combined these.

  Further, the medicine container 3 may be exchangeable or may not be exchangeable.

  As described above, the drug releasing device according to the present invention can be used, for example, when releasing a pest control agent.

DESCRIPTION OF SYMBOLS 1 Pest control agent 2 Apparatus main body 3 Drug container 12 Injection button 13 Malfunction prevention mechanism 50 Lock lever (lock member)
51 Spring (biasing member)

Claims (1)

A container for containing a medicine;
An injection button for injecting a certain amount of medicine in the container;
A malfunction prevention mechanism for switching the injection button between an operable state and an inoperable state, and the malfunction prevention mechanism is configured so that the injection button is in an inoperable state when the injection button is not operated. In a drug diffusion device that operates as follows:
The malfunction prevention mechanism includes a lock lever and a biasing member that biases the lock lever, and the biasing member is housed inside the apparatus main body.
The apparatus body is provided with a lever support shaft that pivotably supports the lock lever so as to protrude upward,
An insertion hole through which the lever support shaft is inserted is formed in the middle portion in the longitudinal direction of the lock lever,
The distal end side of the lock lever from the insertion hole is a part that prevents the injection button from moving in the operation direction by contacting the injection button pushed in the operation direction. The part that prevents the movement includes a position where the movement of the injection button is prevented by moving the lock lever around the lever support shaft and the operation of the injection button is disabled. Can be switched to a position to allow operation in the direction and enable operation,
The base end side than the insertion hole of the lock lever, the user plate-shaped operation unit operated to swing the lock lever is provided so as to extend in the swing direction around the supporting shaft for the lever, the An intermediate plate portion is provided that extends upward from the operation portion to the portion where the insertion hole is formed and is formed so that the cross-sectional area increases toward the lower side,
The biasing member is in contact with a lower side surface of the intermediate plate portion between the insertion hole and the operation portion in the lock lever, and prevents the movement of the injection button in the operation direction. An urging force is applied to the lock lever so that the lock lever swings.

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