JP6175360B2 - Trigger type spray mechanism - Google Patents

Description

  The present invention relates to a trigger type spray mechanism with a locking means connected to a valve stem disposed at an upper end portion of an aerosol container or a pump type spray container.

Examples of conventional products of this type include those described in the following patent documents.
In the trigger type liquid jet pump described in Patent Document 1 below, it is an object to provide a compact and simple configuration that is suitable for sorting and disposal.
As its configuration, a locking surface facing the rear surface of the upper part of the trigger is provided on the lower surface side of the injection cylinder, and a non-metallic elastic pressing part is interposed between the upper rear surface of the trigger and the locking surface. The elastic squeezing portion is squeezed by pulling the trigger, and the trigger is configured to return to the original position by restoring the elastic squeezing portion.

In the trigger dispenser described in the following Patent Document 2, at the same time as achieving compactness, the degree of freedom required for changing the dimensions of the pump chamber is large, and the necessary urging force is provided using a synthetic resin spring that does not require separation and disposal. It is an object of the present invention to provide a trigger dispenser that can be obtained and that does not hinder the operability of switching even if the rotary slide valve is made compact.
Its configuration is a trigger dispenser that slides the piston in the pump chamber up and down by the swinging operation of the trigger lever, and discharges the liquid content by a certain amount. The biasing force that returns the trigger lever and the piston is applied to the main body outside the pump chamber and the trigger. The structure is such that it is applied by a synthetic resin leaf spring that is locked to the back surface of the lever.
As a result, it is possible to reduce the size, increase the degree of freedom in changing the dimensions of the pump chamber, eliminate the need for waste disposal, and obtain the required urging force.

In the invention described in Patent Document 3 below, the trigger urging spring member of the trigger type liquid ejector is made of synthetic resin and has a form suitable for synthetic resin and sufficient elasticity, The metal coil spring built in the trigger type liquid ejector made of resin is removed to make it unnecessary to disassemble at the time of disposal, and it is intended to facilitate attachment.
As its configuration, a semi-cylindrical contact piece that contacts the upper surface of the base of the cylinder outer periphery and a semi-cylindrical contact piece that contacts the lower surface of the tip end of the outer periphery of the cylinder are connected on both sides, and the upper contact piece. A pair of curved spring pieces projecting forward from both sides of the coil, and engaging means for mechanically connecting the front end portion of the plunger to the front end portion of the plunger is provided, and the whole is integrally molded with a synthetic resin rich in elasticity. It is a thing.

In the invention described in Patent Document 4 below, a coil spring or the like built in the cylinder is eliminated by using an elastic diaphragm also as a return spring, and an air valve that is mechanically forced to open is provided. The issue is to eliminate pressure accurately.
In the trigger-type ejector in which the trigger is movably mounted on the ejector body having a plunger-type pump in which the plunger is inserted into the cylinder so as to freely enter and exit, and the trigger and the plunger are mechanically connected to each other. The outer end of the cylinder of the plunger type pump and the appropriate position of the plunger are connected via an elastic diaphragm, and an outside air introduction path is provided adjacent to the cylinder and opened to the inside of the container body. A normally closed air valve is provided at an appropriate position, and mechanical opening means for forcibly opening the air valve in accordance with a pulling operation at an appropriate position of the trigger is provided.

JP 2008-55343 A JP 2001-239193 A Japanese Patent Laid-Open No. 10-235240 JP 9-313999 A

The present invention relates to a trigger-type spray mechanism that can be mounted on a pump-type spray container or an aerosol container similar to the conventional one, and has a simpler configuration and prevents rattling of the trigger portion. That is the first issue.
The backlash of the trigger portion, that is, the backlash of the lever of the trigger portion can be prevented, so that the locking operation of the lock member can be ensured.

Furthermore, the rattling of the trigger part is unavoidable in terms of its structure, and this time it is aimed at the creation of a means that can prevent this rattling. Specifically, delayed injection can be made possible.
This is because the stroke with this backlash is within the range where the injection can be sent.
In addition, in the present invention, it is an object to provide means for realizing a more reliable operation in the specific configuration of the present invention.

  In order to solve the above-described problem, a first aspect of the present invention is a trigger type spray mechanism connected to a valve stem extending upward from an upper end portion of an aerosol container or a pump type spray container. And a push button unit connected to the valve stem, and a trigger unit that is pivotably attached by a pivot unit at the rear of the main body unit, and the push button unit contains the content liquid in the container therein. A passage for discharging is provided, the base end portion of the passage is connected to the valve stem and extends upward, and then bent in a substantially horizontal direction, and the outlet portion at the tip of the passage forms a nozzle Then, by pulling the lever of the trigger part toward the front side, the push button part is pushed down to spray the liquid content of the container, and the upper surface inner wall part of the trigger part is made of a synthetic resin that extends downward. A trigger type spray mechanism characterized in that a resin spring consisting of a leaf spring is provided, and the tip of the resin spring is in contact with the upper surface of the push-down button part to constantly urge the trigger part upward. is there.

  According to a second aspect of the present invention, in the first aspect, when the trigger portion is rotated, a pair of pressing members extending downward from the inner wall portion of the upper surface of the trigger portion is provided, and these pressing members are pressed down. There is provided a trigger type spraying mechanism characterized in that when the lever of the trigger part is pulled close by contacting the protrusions provided on both sides of the button part, the trigger part can push down the push button part.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, a lock member that reciprocates in a substantially horizontal direction is provided above the rotating portion behind the trigger portion, and the lock member is pushed forward. The trigger spray mechanism is characterized in that the trigger portion is prevented from rotating, and conversely, the trigger portion can be rotated by pulling the lock member backward.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, a protrusion is provided at an appropriate position of the lock member, and the protrusion contacts the wall surface of the trigger portion so that the lock member is separated from the trigger portion. It is a trigger type spray mechanism characterized by not falling out backward.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the invention, the base end portion of the main body portion surrounds the through-hole through which the valve stem can be inserted at a portion connected to the valve stem of the container. The trigger spray mechanism is characterized in that a cylindrical wall portion is provided so that the inner wall surface of the cylindrical wall portion can guide the vertical movement of the proximal end portion of the push-down button portion.
In the above invention, “front” or “rear” specifies that the injection direction of the content liquid is the front and the opposite direction is the rear.

In the first one of the present invention, first of all, any type of container, whether it is a pump type spray container or an aerosol container, as long as the valve stem extends upward from the upper end of the container. Can be connected and used.
The spray mechanism according to the present invention includes a main body portion, a push button portion, and a trigger portion that is rotated by a rotation portion at the rear of the main body portion. The push button portion can be simply obtained by simply pulling the lever of the trigger portion rearward. Is pushed down, and the content liquid in the container is sprayed from the nozzle at the tip of the push-down button portion, and the configuration is simple and the manufacture is easy.

The greatest feature of the present invention is a resin spring made of a synthetic resin leaf spring provided on the inner wall of the upper surface of the trigger portion, and the tip of the resin spring is pressed down. The trigger portion can always be urged upward by contacting the upper surface portion of the button portion.
The trigger part is attached to the rear part of the main body so as to be freely rotatable by the turning part, so that the trigger part is in a state of being rattled up and down, but due to the presence of this resin spring, the trigger part is The state of being always urged upward can be maintained, and the rattling is prevented.
By preventing the rattling, the locking operation of the locking member described later is ensured.

In the second embodiment of the present invention, the relational structure between the trigger portion and the push button portion is embodied.
That is, when the trigger portion is rotated, a pair of pressing members extending downward from the upper inner wall portion of the trigger portion is provided, and these pressing members are brought into contact with the protrusions provided on both sides of the pressing button portion. When the lever of the trigger part is pulled, the trigger part can be configured to depress the push button part.
Thereby, the interlocking of the trigger part and the push button part is ensured.

  In the third aspect of the present invention, a lock member is added to the spray mechanism according to the present invention, that is, a lock member that reciprocates in a substantially horizontal direction is provided above the rotating portion behind the trigger portion. The trigger member is prevented from rotating by pushing the lock member forward, and conversely, the trigger member can be rotated by pulling the lock member backward.

  According to a fourth aspect of the present invention, in the third aspect, the structure of the lock member is further limited. That is, a protrusion is provided at an appropriate position of the lock member, and the protrusion is a wall surface of the trigger portion. The lock member is configured so as not to fall backward from the trigger portion.

  In the fifth aspect of the present invention, the connection portion between the main body portion and the valve stem of the spray mechanism according to the present invention is limited, that is, the through hole through which the valve stem is inserted is surrounded by the base end portion of the main body portion. A cylindrical wall portion is provided, and the inner wall surface of the cylindrical wall portion can guide the vertical movement of the proximal end portion of the push-down button. Thus, the valve stem can be surely pressed.

The state which mounted one Embodiment which concerns on the trigger type spray mechanism of this invention to the cap part of a pump type spray container is shown in figure, The (A) is a top view, The (B) is B- of (A) figure B line sectional drawing, the (C) is CC line sectional drawing of the (A) figure, Comprising: The non-operation state is illustrated. The operation state of the spray mechanism according to the above embodiment is shown, in which (A) is a plan view, (B) is a cross-sectional view taken along the line BB in (A), and (C) is C- in (A). C line sectional drawing is shown. In the said embodiment, the case where a resin spring is not provided is illustrated, The (A) is a top view, The (B) is the BB sectional drawing of the (A) figure, The (C) is (A) ) Is a cross-sectional view taken along the line CC of FIG.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 illustrates a state in which one embodiment of the trigger type spray mechanism of the present invention is mounted on a cap part of a pump type spray container, in which (A) is a plan view and (B) is (A). BB sectional drawing of the figure, The (C) is CC sectional view taken on the line (A), Comprising: The non-operation state is illustrated.

  A trigger type spray mechanism 10 (hereinafter simply referred to as a “spray mechanism”) according to the present invention includes a main body part 11, a trigger part 13 rotatably attached to a rotating part 12 at the rear of the main body part 11, The push button portion 15 is bent in a substantially right angle direction. A passage 16 through which the content liquid in the container flows is formed inside the push button portion 15, and a pump type whose illustration is omitted on the start end side of the passage 16. Connected to a valve stem 30 provided at the upper end of the spray container, a nozzle 17 is formed at the outlet of the passage 16.

The valve stem 30 is an injection stem that extends upward from the upper end portion of the spray valve V mounted on the upper end surface of the cap C that seals the upper end opening of the pump type spray container.
The injection valve V is incorporated in the upper end surface of the cap C of the container, and the upper end portion Vu of the injection valve V and the upper end surface Cu of the cap C are attached to the base of the main body portion 11 of the spray mechanism 10 according to the present invention. The end 11b is assembled.

A push-down button portion 15 of the injection mechanism 10 according to the present invention is connected to a valve stem 30 that extends upward at the upper portion of the injection valve V. Specifically, the distal end portion of the valve stem 30 is fitted and connected in the start end portion of the passage 16 of the push button 15.
As described above, the push button portion 15 is bent at a substantially right angle, has a passage 16 therein, a start end portion of the passage 16 is connected to the valve stem 30, and an outlet thereof forms a nozzle 17.
The outer shape of the cross section of the push button unit 15 is a substantially circular shape.

Further, the base end portion 15b of the push button 15 is fitted into a cylindrical wall portion 11w extending upward from the base end portion 11b of the main body portion 11, and reciprocates up and down within the cylindrical wall portion 11w. Is configured to do.
That is, the push button 15 is pushed by the trigger unit 13 pushing the push button 15 downward.
On the other hand, if the force to the trigger part 13 is removed and this is restored, the push button part 15 can also be returned upward. The reason why the push button unit 15 can return upward is due to the biasing action of the coil spring S in the injection valve V.

The trigger portion 13 is rotatable by a rotation portion 12 at the back of the main body portion 11, and by pulling the lever 14, the trigger portion 13 is rotated in the left direction in the figure to press the push button portion 15. Can be pressed down.
More specifically, projections 15t are provided on both sides of the bent portion of the push-down button portion 15, and a pair of push-down members 13t capable of pushing down the projection 15t are provided downward from the upper inner wall portion of the trigger portion 13. It has been.

The pressing member 13t is made of a plate-like body extending downward from the inner wall portion of the upper surface of the trigger portion 13, and a recess is provided at the tip thereof, and the protrusion 15t is formed in the recess. Has been.
With the above-described configuration, the trigger portion 13 rotates with the rotating portion 12 as a fulcrum, and the pressing member 13t can push down the protrusion 15t of the pressing button 15.

A lock member 20 is disposed slightly above the turning portion 12 of the trigger portion 13.
The lock member 20 is provided such that a front portion thereof is fitted into a hole provided in the trigger portion 13, and can reciprocate in a substantially horizontal direction.
An operation portion 20 s is provided at the rear end portion, and the operation portion 20 s abuts on the outer peripheral edge portion of the hole portion of the trigger portion 13 to prevent the insertion thereof.

  On the other hand, a downwardly extending projection 20t is provided on the lower surface of the lock member 20, and the projection 20t abuts on the outer peripheral edge of the hole of the trigger portion 13, whereby the lock member 20 is triggered. It is prevented that the part 13 falls from the inside to the outside.

A resin spring 18, which is the greatest feature of the present invention, is provided so as to extend downward from the inner wall portion of the upper surface of the trigger portion 13.
The resin spring 18 is made of a synthetic resin leaf spring having flexibility and elasticity. The resin spring 18 extends downward from the inner wall surface of the upper surface of the trigger portion 13, and the tip portion of the resin spring 18 contacts the upper surface portion of the push-down button portion 15. It arrange | positions so that it may contact | connect.

Thereby, the trigger part 13 is always maintained in the state of being urged upward, and the upper and lower rattling of the trigger part 13 is substantially suppressed.
In this state (the state of FIG. 1 (B)), as can be seen from FIG. 1 (C), the protrusions 15t provided on both sides of the push button unit 15 and the recesses 13s of the push member 13t are separated from each other, In this state, the distal end portion of the lock member 20 is completely immersed inside the trigger portion 13 and is in a locked state.

The locked state is a state where the lever 14 of the trigger portion 13 cannot be pulled, that is, a state where spraying is impossible.
The lock state will be described in more detail. The distal end portion of the lock member 20 is inserted between an extension portion that extends downward from the upper surface inner wall portion of the trigger portion 13 and an extension portion that extends upward from the upper surface of the main body portion 11. By doing so, the rotation of the trigger portion 13 is prevented, and the locked state is released when the distal end portion of the lock member 20 is pulled backward from between these two extension portions.

  Therefore, the user can pull the lever 14 of the trigger portion 13 by pulling the lock member 20 rearward to release the locked state, thereby pushing down the push button portion 15 downward, The content liquid can be sprayed to the outside from the nozzle 17 at the tip of the push button unit 15.

FIG. 2 shows the operating state of the spray mechanism according to the above embodiment, in which (A) is a plan view, (B) is a cross-sectional view taken along the line BB of (A), and (C) is (A). The CC sectional view taken on the line of the figure is shown.
In FIG. 2, the spray mechanism 10 is in an operating state. Therefore, the lock member 20 is pulled out rearward, and the trigger portion 13 is rotated leftward about the rotation portion 12 and pressed. A state in which the button portion 15 is pushed down to the lowermost position is shown.

As can be seen from FIGS. 2B and 2C, the distal end of the lock member 20 extends between an extension portion 13 e extending downward from the inner wall portion of the upper surface of the trigger portion 13 and an extension portion 11 e extending upward from the main body portion 11. As a result, the trigger part 13 can be rotated.
Then, as well understood from FIG. 2 (B), when the tip of the resin spring 18 is greatly curved, when the force is released from the lever 14 of the trigger portion 13 by its biasing force, that is, the repulsive force, the trigger portion 13 is immediately Then, it will rotate to the right so as to return to the original position.

Thereafter, the lock member 20 returns to the original non-operating state (returned to the unlocked state in FIG. 1) while remaining in the unlocked state while moving backward.
In the case of the end of use, the lock member 20 is shifted in the forward direction, and the use is ended as shown in FIG.
When the lock member 20 is moved in the forward direction, the presence of the resin spring 18 allows the distal end portion of the lock member 20 to smoothly enter between the trigger portion 13 and the extension portions 13e and 11e of the main body portion 11. It will be possible.

FIG. 3 illustrates a case where a resin spring is not provided in the above embodiment, in which (A) is a plan view, (B) is a cross-sectional view taken along line BB in FIG. (C) is the CC sectional view taken on the line of (A) figure.
FIG. 3 shows a state after the lock member 20 has already been pulled out in the rearward direction and unlocked.

Therefore, as can be seen from FIG. 3C, the lever 14 of the trigger portion 13 is in a state where it can be pulled toward the front.
That is, the distal end portion 20f of the lock member 20 is in a state where it is pulled out to the right from between the extension portion 13e extending downward from the inner wall portion of the upper surface of the trigger portion 13 and the extension portion 11e extending upward from the main body portion 11. The trigger part 13 is in a rotatable state.

  However, in this state, since the resin spring is not provided as in the above-described embodiment, the trigger portion 13 is provided on both sides of the push button portion 15 with its left portion falling downward due to its own weight. The protruding portion 15t is in contact with the recess 13s at the tip of the pressing member 13t extending downward from the inner wall portion of the upper surface of the trigger portion 13.

In this state, as can be seen from FIG. 3 (B), even if the lock member 20 is pushed forward, the distal end portion 20f of the lock member 20 is extended with the extension portion 13e and the main body extending downward from the upper inner wall portion of the trigger portion 13. It will not be possible to fit between the extension portion 11e extending upward from the portion 11.
Therefore, the lock by the lock member 20 is impossible, and after the start of use, the lock cannot be performed.

  Of course, the lever 14 can be lifted upward with one hand and the locking member 20 can be inserted and pushed forward with the other hand to lock it, but this is a very troublesome operation or operation. It ends up.

  Thus, in the present invention, the arrangement of the resin spring not only prevents the trigger portion 13 and the lever 14 from rattling, but also allows the locking operation of the locking member 20 to be easily performed. Is the feature.

  Further, due to the presence of the resin spring, the relationship between the protrusions 15t provided on both sides of the pressing button 15 and a pair of pressing members 13t extending downward from the inner wall of the upper surface of the trigger 13 acting on the protrusion 15t. That is, by separating the protrusion 15t and the recess 13s at the tip of the pressing member 13t by a predetermined distance (the state shown in FIG. 1C), the distance from the start of the operation of the lever 14 depends on the distance of the distance. It is also possible to shift the time until the spray start time, and it can be applied to a spray mechanism that needs to give the effect of delayed edge injection.

As mentioned above, although embodiment of this invention was described, in this invention, various design changes are possible as follows.
First, in the present invention, the pump type spray container has been described as an example in the above embodiment, but the same applies to an aerosol container in which the internal chemical liquid and propellant of the container are stored using the spray mechanism having the same configuration. It can be applied to.
The point is that the base end portion of the main body portion has a through hole of the valve stem, and the base end portion is appropriately assembled with the upper end portion of the aerosol container and can be fixed.

The form and size of the main body part, the trigger part, and the push button part can be appropriately changed as necessary.
The design and the like of the width and length of the resin spring can be freely changed as appropriate. In short, if the trigger part extends downward from the inner wall part of the upper surface of the trigger part and abuts against the push button part to maintain the push button part in the pressed state, the trigger part will always be urged upward by the reaction. It is.

In the present invention, a form in which the nozzle part is combined with the push button itself is adopted. However, the structure of the nozzle part can be appropriately changed as necessary.
This is because the nozzle part may be designed depending on the type of spray or propellant solution.
The outer shape of the cross section of the push button portion may be a rectangular shape.
The structure of the rotation part behind the trigger part is also completely free, and any structure such as a shaft attachment, a pivot attachment, and a butterfly attachment may be adopted.

  As described above, in the present invention, by providing the resin spring on the inner wall portion of the upper surface of the trigger portion, the trigger portion can be always urged upward to prevent rattling and the lock member is always locked. It was possible to provide a trigger type spray mechanism that was easily made possible.

10 trigger type spray container 11 body part 11b base end part (of body part)
11e Extension part 11w Cylindrical wall part 12 Rotating part 13 Trigger part 13e Extension part 13t Depressing member 13s Recess (of depressing member)
14 Lever 15 Push button part 15b Base end part (of push button part)
15t Protrusion part 16 Passage 17 Injection hole 18 Resin spring 20 Lock member 20f Tip part 20s Operation part (lock member)
20t Protrusion 30 Valve stem C Cap V Injection valve

Claims (5)

In the trigger type spray mechanism connected to the valve stem extending upward from the upper end of the aerosol container or the pump type spray container,
The injection mechanism is composed of a main body, a push button connected to the valve stem, and a trigger that is rotatably attached to a rotating part at the rear of the main body.
The push button part is provided with a passage for discharging the content liquid in the container, the base end part of the passage is connected to the valve stem and extends upward, and then folded in a substantially horizontal direction. Bend, the outlet at the tip of the passage forms a nozzle,
By pulling the lever of the trigger part to the near side, the push button part is pushed down and the liquid in the container is sprayed,
A resin spring made of a synthetic resin leaf spring extending downward is provided on the inner wall of the upper surface of the trigger portion, and the tip of the resin spring abuts on the upper surface of the push-down button portion so that the trigger portion is always raised. A trigger type spray mechanism characterized by urging in the direction.   When turning the trigger portion, a pair of pressing members extending downward from the inner wall portion of the upper surface of the trigger portion is provided, and these pressing members come into contact with protrusions provided on both sides of the pressing button portion, The trigger type spray mechanism according to claim 1, wherein when the lever of the trigger part is pulled, the trigger part can push down the push button part.   A locking member that reciprocates in a substantially horizontal direction is provided above the rotating portion behind the trigger portion, and the trigger member is prevented from rotating by pushing the locking member forward, and conversely, the locking member is pulled backward. The trigger type spray mechanism according to claim 1 or 2, wherein the trigger portion can be rotated.   4. The trigger according to claim 3, wherein a protrusion is provided at an appropriate position of the lock member, and the lock member does not fall backward from the trigger portion when the protrusion contacts the wall surface of the trigger portion. Type spray mechanism.   A cylindrical wall portion is provided at a portion of the base end portion of the main body portion that is connected to the valve stem of the container so as to surround a through hole through which the valve stem can be inserted, and an inner wall surface of the cylindrical wall portion is the push button. The trigger type spray mechanism according to any one of claims 1 to 4, wherein the vertical movement of the base end portion of the portion can be guided.