JP6195738B2 - Lever-operated injection device - Google Patents

Description

  The present invention relates to a lever operation type injection device. More specifically, the present invention relates to an injection device that can detach a small aerosol container or the like attached to an injector body by using an injection lever.

  In general, an aerosol device or a pump-type injection device pushes an injection member provided with an injection nozzle to inject contents from the injection nozzle. On the other hand, in a small aerosol device, since it is difficult to operate, there is one in which an injection container is accommodated in an injector body and injection / stop is performed by operating an operation lever.

  Patent Document 1 discloses an injection adapter device in which an entire aerosol container is accommodated in a storage portion, and the aerosol container is pushed up by an operation lever to perform an injection operation. Patent Document 2 includes an injection device main body that houses an aerosol container below a partition wall, and an injection member that includes a stem engagement portion that fits with an upper end of a stem that protrudes upward from the partition wall. Discloses an aerosol device that also serves as an operation lever having one end rotatably connected to an injection device body and the other end serving as a pushing portion.

  Patent Document 3 discloses an ejection device that can rotate an operation lever in a direction opposite to the operation direction. This can rotate the lever in the reverse direction to increase the gap between the lever and the container body, and can be hooked on the horizontal bar or the upper end of the wall.

JP 2010-254312 A JP 2012-201387 A JP 2008-30830 A

  The injection adapter apparatus of patent document 1 and the aerosol apparatus of patent document 2 have accommodated the whole aerosol container in the accommodating part. Therefore, when replacing the aerosol container, it is difficult to pick and remove the aerosol container. Further, if the spray adapter or the aerosol device is shaken up and down to remove the aerosol container, it is unexpectedly detached and vigorously jumps out, so that it is difficult to remove it safely. In addition, since the aerosol container of patent document 3 is not accommodated in the accommodating part and is exposed outside, the injection member can be easily removed from the aerosol container. Therefore, Patent Document 3 does not disclose the subject of the present invention.

  This invention makes it a technical subject to provide the injection apparatus which can take out an injection container easily from an accommodating part in the injection apparatus by which the whole injection container is accommodated and is operated with an operation lever.

The injection device of the present invention is an injection container, an injector main body that accommodates the injection container, and is rotatably attached to the injector main body, and the injection container injects by a rotation operation in the first direction, It comprises an operation lever that stops injection when released, and the injector body includes an accommodating portion that accommodates the entire injection container, and an injection member that fits the stem of the injection container is provided in the injector body The operation lever extends in the vertical direction, and the vicinity of the upper end is rotatably supported on the upper portion of the injector body. When the operation lever is operated in the first direction near the lower end of the operation lever, the injection container A pressurizing piece having an inclined surface that pushes up the lower end of the operation lever is provided, and when operated in the second direction opposite to the first direction, the presser is engaged with the upper end of the injection container and pushed down near the upper end of the operation lever. The injection container Elimination protrusion can be removed from the injector body is provided, at the rear of the inner surface of the receiving portion, an injection container slidably guided guide wall is provided above and below, the opening of the lower end of the receiving portion is the bottom The lid is closed so as to be freely opened and closed, and a locking projection for preventing the operation lever from projecting forward is provided on the bottom lid (claim 1).

In such injectors, the injection container has an aerosol valve, shall have stem mates with the injection member of the aerosol valve is preferably (claim 2).

In addition to providing the above-mentioned injection member in the injection container, it may be provided in the operation lever. In this case, when the operation lever is rotated in the first direction, the injection member approaches the injection container, the stem is pushed in, and the aerosol valve is open, Ru can be the injection member is rotated in the second direction so as injection member spaced apart from the injection vessel is released from the stem.

The injection device (Claim 1) of the present invention can remove the injection container from the injector body when the operation lever is operated in the second direction. That is, the operation lever has both a function of ejecting and a function of removing the ejection container. Therefore, although the entire aerosol container is accommodated in the accommodating portion, the used aerosol container can be easily and safely removed when the aerosol container is replaced.
Further, the vicinity of the upper end of the operation lever is rotatably supported by the injector main body, and the release lever is provided near the upper end of the operation lever so as to push down the injection container when the operation lever is operated in the second direction. By rotating the operation lever in the second direction, the injection container can be easily detached from the injector main body and can be taken out of the injector main body as it is. At that time, it is possible to increase the force of taking out the injection container by the lever action of the operation lever. The part to be pushed down may be the upper end or the shoulder.
And since the pressurization piece provided with the inclined surface which pushes up the injection container when the operation lever is operated in the first direction is provided, the force of the injection operation can be increased by the action of the inclined surface. In addition, a lateral force is also applied to the spray container by the inclined surface, but since the guide wall supports the lateral force, no excessive lateral force is applied to the stem.

The ejection container has an aerosol valve, stem and mating injection member the injector body or that are provided on the operation lever if the aerosol valve (Claim 2) is injected by rotational operation of the control lever The member can be removed from the stem and the injection member can be reused. In addition, even if the stem and the injection member are tightly fitted so that the contents remaining in the injection member after injection do not leak, and the injection container does not accidentally come off and drop during normal use, the fitting Can be removed safely and easily.

The injection member is provided on the operation lever. When the operation lever is rotated in the first direction, the injection member approaches the injection container, the stem is pushed in, the aerosol valve is opened, and the operation lever is rotated. and if spaced apart from the injection member is one that desorbed from the stem injection member from the injection vessel, there is no need for vertically moving the injection vessel, even when employing relatively large injection container, injection operation and Removal operation is easy.

It is sectional drawing which shows one Embodiment of the injection apparatus of this invention. It is sectional drawing which shows the injection state of the injection device of FIG. It is sectional drawing which shows the container detachment | leave state of the injection apparatus of FIG. It is sectional drawing which shows other embodiment of the injection apparatus of this invention. It is sectional drawing which shows other embodiment of the injection apparatus of this invention. It is sectional drawing which shows the container detachment | leave state of the injection apparatus of FIG.

  An injection apparatus 10 shown in FIG. 1 includes an injector main body 11, an injection container 12 accommodated in the injector main body so as to be movable up and down, and a nozzle 13 mounted on the upper portion of the injector main body 11 so as not to move up and down. And an operation lever 14 that is rotatably attached to the injector body 11. The nozzle 13 is an injection member.

  The injector body 11 is a thin hollow case and is made of synthetic resin or the like. The left and right halves are combined into one body. 1 and the like can also be viewed as a state where one half is removed. Holding protrusions 16 and 17 for holding a substantially L-shaped nozzle 13 are provided on the inner surface of the upper portion 15 of the injector body 11. These holding protrusions 16 and 17 can also be divided into left and right parts and held so as to sandwich the nozzle 13. The holding protrusions 16 and 17 may have a U-shaped or Ω-shaped groove that can be detachably held by elastically fitting the nozzle 13 from the lower side, for example. In that case, the nozzle 13 can be easily replaced. At the front end of the upper portion 15 of the injector body 11, an opening 15 a through which liquid or spray sprayed from the nozzle hole 13 a of the nozzle 13 is passed is formed.

  The lower portion 18 of the injector body 11 is provided with a storage portion 19 that stores the injection container 12. The upper end of the lower part 18 is thin so that it can be easily gripped, and the upper part 15 is continuous on the upper part 15 so that the diameter of the upper part 15 expands upward. A constricted part is formed between the upper part 16 and the lower part 18. Yes. In this embodiment, the lower surface of the lower part 18 is opened so that the injection container 12 can be replaced. The opening is closed by a slide lid type bottom cover 20. It may be another form of bottom cover such as a hinge type or a separate type. A guide wall 21 is provided behind the inner surface of the accommodating portion 19 to guide the injection container 12 so as to be slidable up and down. A vertically long opening 22 through which the operation lever 14 is passed is formed on the front surface of the lower portion 18. Near the upper end of the lower portion 18 or near the lower end of the upper portion 15, a support portion 23 that rotatably supports the operation lever 14 is provided.

  The operation lever 14 is formed with a support shaft 24 that is rotatably supported by a support portion 23 in the vicinity of the upper end, and includes a detachable protrusion 25 that protrudes rearward (right side in FIG. 1) from the upper end. . A pressure piece 26 protruding rearward is formed at the lower end of the operation lever 14, and the upper surface of the pressure piece 26 is an inclined surface 27 that gradually decreases toward the tip side (rear). A protrusion 28 is provided on the lower surface of the tip of the pressure piece 26 and engages with a locking protrusion 29 formed on the bottom lid 20 so that the operation lever 14 does not protrude further forward. From the rear end of the bottom cover 20, a locking tongue piece 31 that elastically locks in a locking groove 30 formed in the injector body 11 protrudes.

  The operation lever 14 projects outside from the above-described vertically long opening 22 except for the vicinity of the upper end and the vicinity of the lower end, and can be operated like a trigger with a fingertip when the user holds the injector body 11. The front side of the operation lever 14 is somewhat concavely curved so that it can be easily grasped with a finger. An urging member such as a spring that urges the operation lever 14 in a protruding direction may be provided.

  In this embodiment, the injection container 12 is an aerosol container, and includes a container body 34 and an aerosol valve 36 attached to the upper end of the container body by a mounting cup 35 as shown in FIG. The container main body 34 may be made of metal or synthetic resin. In FIG. 1, a metal container main body 34 is shown, and a metal plate mounting cup 35 is placed on the upper end of the container main body 34, and is clinched and fixed to the inner peripheral lower surface of the bead portion 37 of the container main body 34. However, a synthetic resin container main body 41 as shown in FIG. 4 may be employed. Reference numeral 38 in FIG. 2 denotes a stem of the aerosol valve 36. The lower portion of the stem 38 is accommodated in the valve housing 39 so as to be movable up and down, and is always urged upward by a spring. The base 13 b of the nozzle 13 is fitted to the upper end of the stem 38. The aerosol valve 36 is a known one that opens the valve (stem hole) when the stem 38 is pushed down and closes the valve (stem hole) when the pushing force is weakened.

  In the container main body 34, the contents sprayed from the nozzle 13, for example, space sprays such as deodorants, fragrances, insecticides, insecticides, bactericides, antiperspirants, astringents, sunscreens, anti-inflammatory analgesics Such as liquefied petroleum gas, dimethyl ether, hydrofluoroolefin and mixtures thereof, liquefied gas, nitrogen, nitrous oxide, carbon dioxide, It is filled with a compressed gas such as compressed air and a mixture thereof, and a propellant (pressurizing agent) such as a mixture of liquefied gas and compressed gas.

  When the injector 10 configured as described above holds the injector body 11 and grips the operation lever 14 with the fingertip, the operation lever 14 rotates counterclockwise about the support shaft 24 as indicated by an arrow P1 in FIG. Rotate. The inclined surface 27 of the pressure piece 26 is deeply engaged with the bottom surface of the injection container 12 and pushes up the lower surface of the injection container 12. At this time, the injection container 12 moves up and down straight by the guide wall 21. As a result, the stem 38 is pushed in and the aerosol valve 36 is opened, so that the contents are ejected from the nozzle hole 13a. When the gripping force is loosened, the injection container 12 tends to descend by the elasticity of the spring that biases the stem 38. Thereby, the inclined surface 27 of the operation lever 14 is pushed by the lower surface of the injection container 12, and the operation lever 14 returns to the normal state protruding from the injector body 11 as shown in FIG. When a return spring that biases the operating lever 14 back to the state before the pulling operation is provided, the return is quick.

  When the injection container 12 is emptied, the bottom cover 20 is removed and the restraining of the locking projection 29 is released, and then the operation lever 14 is operated around the support shaft 24 as shown in FIG. And in the clockwise direction (arrow P2) in FIG. Then, the detachment protrusion 25 at the upper end of the operation lever 14 pushes down the upper surface or shoulder of the injection container 12. In the embodiment of FIG. 3, the upper surface of the mounting cup 35 is pushed downward. Thereby, the stem 38 can be extracted from the base portion 13 b of the nozzle 13. The stem 38 and the base portion of the nozzle 13 are fitted relatively firmly. However, since the operation lever 14 has a lever effect, the stem 38 can be easily extracted from the base portion of the nozzle 13. The detaching protrusion 25 may be bifurcated so as to avoid the stem 38.

  When the empty injection container 12 is extracted, the injection container 12 falls by its own weight. Then, a new injection container is mounted and the bottom lid 20 is attached. Thus, the state shown in FIG. 1 is restored and the next injection can be performed. Even when the fitting of the stem 38 and the base portion 13b of the nozzle 13 is shallow, when the operation lever 14 is pulled, the injection container 12 is pressurized upward, and the fitting of the stem 38 and the base portion 13b of the nozzle 13 is ensured. When the injection container 12 is pressurized upward, a lateral force is also applied to the injection container 12 by the inclined surface 27. However, since the guide wall 21 supports a lateral force, an excessive lateral force is not applied to the stem 38.

The injection device 40 shown in FIG. 4 employs an injection container 42 provided with a synthetic resin container body 41, and has a remaining amount confirmation window 43 formed on the side surface of the injector body 11, as shown in FIG. It is substantially the same as the injection device 10. The container body 41 is made of a synthetic resin such as polyethylene terephthalate (PET) or nylon (NY), and is transparent or translucent. A head 47 is formed on the upper portion of the body 44 via a shoulder 45 and a neck 46. An outer peripheral clinch type aerosol valve 48 is mounted in the head 47. The lower end of the cover cap 49 that holds the aerosol valve is clinched to the lower surface of the head 47. The window 43 of the injector main body 11 is formed from the vicinity of the upper end of the trunk portion 44 of the container main body 41 to the lower end. Thereby, the remaining amount of the contents can be confirmed through the window 43 and the container main body 41. Moreover, since the container main body 41 is made of a synthetic resin, it is lightweight.

  When the neck 46 is thinner than the head 47 as in the injection container 42 shown in FIG. 4, a pressure piece that hooks the head 47 instead of the bottom of the container is adopted, and the injection container 42 is raised to be injected. it can. Further, the shoulder 45 may be pushed down when the injection container 41 is pushed down.

  An injection device 50 shown in FIG. 5 includes an injector main body 51, an injection container 52 that is accommodated so as not to move up and down, a nozzle 53 that is fitted to a stem 38 of the injection container, and an upper and lower nozzle 53. And an operation lever 54 to be operated. In this embodiment, the nozzle 53 and the operation lever 54 are integrally formed. The operation lever 54 may be configured separately from the nozzle. In that case, for example, the operation lever 54 is engaged so as to convert the rotation of the operation lever 54 into the vertical movement of the nozzle 53.

  The injector body 51 is a hollow case formed of synthetic resin or the like, and an opening for exchanging the injection container 52 is provided at the lower end. The opening is normally closed by a bottom lid 55. The inside of the injector body 51 is a housing portion 56, and a partition wall 57 extending in the horizontal direction is provided at the top. An opening 58 through which the stem 38 is passed is formed in the partition wall 57. The opening 58 is smaller than the head 59 of the injection container 52. A support portion 61 is provided on the upper portion 60 above the partition wall 57, and supports the support shaft 62 of the operation lever 54 in a freely rotatable manner. The injection container 52 is made of a transparent or translucent synthetic resin, and a window 43 for checking the remaining amount is formed in the injector main body 51.

  In the injection device 50 configured as described above, when the operation lever 54 is pressed down, the injection container 52 does not move up and down, so the stem 38 of the aerosol valve 48 is pressed down and the contents are injected from the nozzle 53. When the force pushing the operating lever 54 is weakened, the stem 38 is raised by the spring of the aerosol valve 48, and the injection stops. When exchanging the injection container 52, as shown in FIG. 6, the operation lever 54 is pulled up in the direction of the arrow P3. At that time, since the head 59 of the injection container 52 is caught by the partition wall 57, the nozzle 53 is extracted from the stem 38. Therefore, it is possible to take out the used injection container 52 by opening the bottom lid 55. Next, when a new injection container 52 is mounted and the bottom lid 55 is closed, the state returns to the state shown in FIG.

  In the embodiment of FIG. 1 and the like, an aerosol container that ejects contents with a pressurizing agent is employed as an ejection container, but a container that ejects contents by a pump can also be employed. Moreover, although the nozzle 13 and the injector main body 11 are formed separately in the injection device 10 of FIG. 1, they can be formed integrally.

DESCRIPTION OF SYMBOLS 10 Injection apparatus 11 Injector main body 12 Injection container 13 Nozzle 13a Injection hole 13b Base part 14 Control lever 15 Upper part 15a Opening 16, 17 Holding protrusion 18 Lower part 19 Storage part 20 Bottom cover 21 Guide wall 22 Vertically long opening 23 Support part 24 Support shaft 25 Desorption protrusion 26 Pressurization piece 27 Inclined surface 28 Protrusion 29 Locking protrusion 30 Locking groove 31 Locking tongue piece 34 Container body 35 Mounting cup 36 Aerosol valve 37 Bead part 38 Stem 39 Valve housing 40 Injection device 41 Container body 42 Injecting container 43 Window 44 Body 45 Shoulder 46 Neck 47 Head 48 Aerosol valve 49 Cover cap 50 Injecting device 51 Injector main body 52 Injecting container 53 Nozzle 54 Operation lever 55 Bottom lid 56 Housing part 57 Bulkhead 58 Opening 59 Head 60 Upper part 61 Support part 62 Support shaft

Claims (2)

A spray container;
An injector body that houses the injection container;
The injector body is rotatably mounted, and includes an operation lever that injects the injection container by a rotation operation in the first direction and stops the injection when released.
The injector body includes an accommodating portion that accommodates the entire ejection container;
An injection member fitted to the stem of the injection container is provided in the injector body,
The operation lever extends in the vertical direction, and the vicinity of the upper end is rotatably supported on the upper portion of the injector body.
The lower end vicinity of the operating lever, when the operation lever in the first direction, and pressing piece is provided with an inclined surface for pushing up the lower end of the injection vessel,
Near the upper end of the operation lever, when operated in a second direction opposite to the first direction, there is a detachable protrusion that engages and pushes down the upper end of the injection container and can remove the injection container from the injector body. Provided,
A guide wall that slidably guides the spray container up and down is provided behind the inner surface of the housing portion,
An injection device in which an opening at a lower end of the housing portion is closed by a bottom lid so as to be freely opened and closed, and a locking projection for preventing the operation lever from protruding forward is provided on the bottom lid . The ejection container has an aerosol valve, the injection device according to claim 1, wherein the stem of the aerosol valve is fitted with the injection member.