JP2002361127A - Spring element, trigger spray having the same and spray container equipped therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spring element receiving force accurately from a trigger body and capable of keeping sufficient spring force. SOLUTION: The spring element 3 made of a polyolefinic resin is incorporated in a trigger spray A to apply resilient force to the trigger body. The spring element 3 consists of a pair of arcuate bridge parts 31 and the connection part 32 for joining the terminals of the bridge parts and the front ends of the bridge parts 31 can be fitted to the trigger body 2. When compression force acts on the bridge parts 31, resilient force is obtained because arcuate curvature becomes large and the bridge parts 31 are twisted at the same time. Since the trigger body and the spring element are joined by fitting, wasteful backlash is eliminated between both of them and movement or force can be certainly transmitted to each other. Further, the efficient spring force caused by compression and twist can be developed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trigger spray having a structure in which a liquid in a cylinder is mounted on a spray container to compress the liquid in a cylinder by the rotating power of a trigger body and is ejected from a nozzle. Related to a spring body.

[0002]

2. Description of the Related Art Conventionally, a spray container has been used for spraying a liquid such as a medicine. A pump dispenser that performs a spraying function, that is, a trigger spray is attached to the spray container. The trigger spray has a base body, and a wing-shaped trigger body is rotatably attached to the base body,
A pump (comprising a cylinder and a piston) is operated by hooking a finger or the like on the trigger body, and the liquid in the container is ejected from the nozzle to the outside by the compression force.

FIG. 11 specifically shows an example of the conventional trigger spray. That is, as can be seen from the drawing, the trigger spray 100 is supported and fixed to the cap 101 attached to the mouth of the container main body via the packing 102 by screwing the cap into the mouth of the container main body. A valve case 103 having a next valve 104, a tube 105 inserted and fixed to the valve case 103, a housing 106 inserted and fixed to the valve case 103, and a nozzle 107 press-fitted and fixed to the housing 106. , A plunger 109 having a piston 108 that slides in a cylinder formed in a housing 106, and a trigger body 1 that presses the plunger 109
10, a spring 111 for resiliently supporting the trigger body with respect to the base body, and a secondary valve 112 inserted in a valve case of the base body.

[0004] In the trigger spray having such a structure, in order to eject the liquid in the container body from the nozzle 107, first, a finger is hooked from the initial state in which the cylinder is filled with the liquid, and the trigger body 110 is pulled. Pull in. As a result, the plunger 109 is pushed and the piston 10
8 compresses the liquid in the cylinder of the housing 106.

[0005] The compressed liquid passes through a gap between the housing 106 and the valve case 103 inserted therein, passes through the secondary valve 112, and is jetted out of the nozzle tip. When the finger is released from the trigger body 110, the trigger body 110 returns to the original state by the elastic force of the spring 111. At this time, the liquid in the container main body passes through the tube 105 and the primary valve 104, and is conversely filled in the cylinder to be in an initial state.

[0006] Among these components, in particular, the spring is an important component for imparting a restoring force to the movement of the trigger body, so it is necessary that the spring force can be sufficiently exerted. Also, the connection between the two must be reliably maintained so that the force of the trigger body can be accurately transmitted to the spring. In addition, in order to maintain the connected state with respect to the moving trigger body, the degree of freedom of mutual movement of the two at the connecting portion must also be ensured.

[0007]

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention overcomes the above-mentioned problems and provides a spring body capable of accurately transmitting a force from a trigger body and maintaining a sufficient spring force. That is. Another object of the present invention is to provide a trigger spray incorporating the same and a spray container provided with the trigger spray.

[0008]

Means for Solving the Problems Thus, the present inventor has:
As a result of intensive research on such a background,
It has been found that a sufficient spring force can be maintained by limiting the spring body to a certain shape, and the present invention has been completed based on this finding.

That is, the present invention provides (1) a spring body which is incorporated in a trigger spray and gives a resilient force to a trigger body, wherein the spring body comprises a pair of arch-shaped bridge portions and the bridge portions. The present invention resides in a spring body including a connecting portion connected at an end.

[0010] (2) When a compressive force acts on the bridge portion, the spring portion is configured to obtain an elastic force by twisting the bridge portion while increasing the arch-like curvature.

(3) The front end of the bridge portion is a spring body which can be fitted to the trigger body.

(4) The trigger body is provided with a concave portion pivotally attached to the spindle portion of the trigger spray, a finger hook portion for catching a finger, and fitted between the concave portion and the finger hook portion and fitted into the head of the piston. The spring body includes a fitting portion to be fitted and a receiving portion into which the spring body is fitted.

Further, (5) the bridge portion has a cross section formed in a rectangular shape in a vertical direction.

Further, (6) the present invention resides in a spring body in which the cross section of the bridge portion is formed in the shape of a parallelogram in the vertical direction.

Further, (7) the present invention resides in a spring body in which a fan-shaped piece is erected at the connecting portion of the bridge portion so that attachment to the trigger spray is stabilized.

(8) The spring body is a spring body made of a polyolefin resin.

Also, (9) a polyolefin resin spring body incorporated in the trigger spray for giving resilience to the trigger body, the spring body comprising a pair of arch-shaped bridge portions and the bridge portions The front end of the bridge part can be fitted to the trigger body, and when compressive force acts on the bridge part, the arch-like curvature increases and the bridge part is twisted at the same time The spring body is configured to obtain a resilient force.

Further, (10) the present invention resides in a trigger spray incorporating the above-mentioned spring body.

Further, (11) the present invention resides in any one of the above spray containers provided with a trigger spray incorporating the above-mentioned spring body.

The present invention, provided that it is in line with this object,
Of course, a configuration combining two or more selected from the above 1 to 9 can also be adopted, and a spray container having a trigger spray having such a spring body can also be adopted.

According to the spring body of the present invention, the connection with the trigger body is reliable, the spring force of the spring body can be effectively used for the trigger body, and the return force of the trigger body is sufficient.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a spring body according to the present invention will be described below with reference to the drawings.

[First Embodiment] First, the overall structure of a trigger spray incorporating a spring body of the present invention will be described. FIG. 1 is an external view showing a trigger spray. FIG. 2 is a sectional view showing the internal structure of the trigger spray before the trigger is pulled.
FIG. 3 is a sectional view showing the internal structure of the trigger spray in a state after the trigger is pulled.

In the trigger spray A, a trigger body 2 is rotatably attached to a base body 1 serving as a frame of the trigger spray A, and the trigger body 2 is pulled so that the inside of a cylinder portion 13 which is a part of the base body 1 is pulled. Is compressed by the piston 4 so that the liquid in the container can be ejected from the nozzle 6 to the outside.

That is, the trigger spray A comprises the cap 7 attached to the mouth B of the container body, the base body 1 supported and fixed to the cap 7 (more specifically, the cap 7 and the mouth B of the container body). The base body 1 is pressed and held between the base body 1), the tube 10 mounted on the first valve case part 11 which is a part of the base body 1, and the tube 1 inserted into the first valve case part 11. Next valve and base 1
A cover 5 and a nozzle 6 fitted into the base member 1, a piston 4 that slides in a cylinder portion 13 that is a part of the base body 1,
A trigger body 2 rotatably mounted on the base body 1 to press the piston 4; a spring body 3 for elastically supporting the trigger body 2 on the base body 1; the nozzle 6 and the base body 1; And a secondary valve 9 mounted between them.

Hereinafter, the mutual attachment structure of these components will be described in more detail. The base body 1 has a cap 7
Attached to the spray container body. Here, the base body 1 is fixed to the container body by screwing the cap 7 to the mouth portion B of the container body. In this case, the base body 1 has a structure in which the lower end portion 16 and the flange portion 17 are sealed with the inner wall surface B1 and the upper wall surface B2 of the mouth of the container body, so that the liquid tightness is accurately achieved. Guaranteed to. In particular, the lower end portion 16 of the base body 1 is formed in a seal link shape, and the liquid tightness is further ensured by being in close contact with the inner wall surface of the container mouth.

The base 1 has a first valve case 11 formed in a vertical direction and a second valve case 12 formed in a horizontal direction. The valve 8 is connected to the second valve case 12
, A second valve 9 is inserted. First valve case 1
A tube 10 is externally attached to 1 and attached, and the tube 10 is suspended in the container body. On the other hand, the liquid in the container body is sucked up through the tube 10. The cover 5 is fitted and fixed to the base body 1 from above, and the nozzle 6 is fitted from the side.

The cover 5 is provided with two front and rear mounting projections, and the front mounting projection 51 is mounted on the front mounting receiving portion 14 formed on the extension of the second valve case 12. The rear mounting projection 52 is also mounted on a rear mounting receiver 15 similarly formed on the rear of the base. A nozzle 6 is hinged to the tip of the cover 5 via a thin portion 5A (a so-called hinge portion), and the cover 5 can be removed vertically starting from the thin portion 5A. Preferably, the cover 5 and the nozzle 6 are both integrally formed of a polyolefin resin, for example, polypropylene.

A part of the base body 1 includes a cylinder 13
Is formed, and the piston 4 reciprocates while sliding in the cylinder. In order to press the piston 4, a trigger body 2 provided with a return force by a spring body 3 is attached to the base body 1.

FIGS. 4A and 4B are views showing the trigger. FIG. 4A shows a state in which the distal end of the spring body is not fitted, FIG. 4B shows a state in which the distal end of the spring body is fitted, and FIG. It is the figure which expanded. The trigger body 2 has an arched wing-shaped structure so that a finger can be stably hooked. The trigger body 2 is provided with a concave portion 21A at the upper end pivotally attached to the spindle portion 18 of the trigger spray, a finger hook portion 22 for hooking a finger, and a piston head 41 provided between the concave portion 21A and the finger hook portion. There is provided a fitting portion 22A to be fitted, and a receiving portion 21B for fitting the distal end portions 31A of the bridge portions 31, 31 of the spring body 3.

The receiving portion 21B has a fitting portion 21B1, and a pair of receiving portions 21B1 are provided on the side surfaces 21 and 21 of the trigger body, and a pair of bridge portions 31 and 31 of the spring body 3 are fitted respectively.
The trigger body 2 is pivotally attached to a support shaft 18 formed in the base body 1 at a concave portion 21A at an upper end thereof, and a piston head 41 is fitted and attached at a fitting portion 22A below the fixed distance by a predetermined distance. Can be For this reason, by putting a finger or the like on the trigger body 2 and pulling it to the right in the figure, the head 4
1 is pressed, and the piston 4 slides similarly to the right in the cylinder. The trigger body 2 is moved by the elastic force of the spring body 3.
After the trigger body 2 is pulled, when the user releases his / her finger or the like to release the force, the original state can be steadily restored. On this occasion,
The pair of bridge portions 31 of the spring body 3 is the trigger body 2
Is fitted to the receiving portion 21B on the side surface 21 of
The movement and force between the two can be transmitted accurately.

FIG. 5 is a view showing a spring body.
(A) is a perspective view of a spring body, (B) is a top view of a spring body. That is, the spring body 3 includes a pair of bridge portions 31, 31 extending parallel to each other and in an arch shape.
And a connecting portion 3 for connecting the bridge portions 31 at the ends.
It consists of two. For this reason, the front end of the spring body 3 on the side opposite to the connecting portion 32 is a free end.

As described above, in a state where the spring body 3 is incorporated and attached to the trigger spray A, when the trigger body 2 is moved, the spring body 3 accurately follows the movement and reduces the elastic force. Demonstrate. Here, each cross section of the pair of bridge portions 31 in the spring body 3 is formed in a rectangular shape in the up-down direction (side direction of the trigger body).
The vertical direction refers to the vertical direction in a state where the spring body 3 is properly set on the trigger spray A.

FIGS. 6 and 7 are diagrams for explaining the deformation applied to the bridge portion and the reaction force generated thereby. FIG.
(A) is a perspective view and (B) is a front view showing a state in which no external force acts on the spring body 3. FIG. 7 shows a case where a stress is generated in the spring body 3 to generate a reaction force a due to compression and a reaction force b due to torsion (indicated by one bridge portion for convenience). (B) is a front view.

Now, when a finger is put on the finger hook 22 of the trigger body 2 and the trigger body 2 is strongly pulled and compressed as indicated by the arrow in FIG. 7 (thick arrow A), the bridge 3 is attached to the spring body 3.
The reaction force a (thin arrow) accompanying 1 is added, and the elastic force is obtained. Further, a reaction force b (thin arrow) due to torsion (thick arrow B) is applied to the bridge portion 31 of the spring body 3. Therefore, the spring force of the spring body 3 is such that the reaction force a
And the reaction force b due to the torsion is added, and the resilience becomes a combined repulsion force. Due to these two reaction forces, the elastic force of the spring body 3 is efficiently exhibited. As described above, the spring body 3 of the present invention can obtain an efficient spring force.

Here, the cross section of the bridge portion 31 in the spring body 3 is formed in a rectangular shape in the vertical direction (FIG. 8).
(A)), the reaction force due to the torsion and the compression force was obtained, but in order to more easily obtain the reaction force due to the torsion, the cross section should be a vertical parallelogram (see FIG. 8 (B)). Is more preferred. By changing the cross section of the bridge portion 31 in this way, the torsional coefficient can be changed. If the cross section is a rectangular shape or a parallelogram shape, twisting will occur as indicated by the arrow. In the latter case, the twisting is particularly likely to occur.

In the part of the trigger spray, conventionally,
In order to eliminate blurring after incorporating and improve the fit,
Although it was necessary to adopt a polyacetal resin as the material of the spring body, the spring body 3 of the present invention is wasteful for connecting the two because the pair of bridge portions are fitted and connected to the side surface of the trigger body 2. There is no backlash. Therefore, it is possible to employ a polyolefin resin, for example, a polypropylene resin, which is advantageous for recycling.

FIG. 9 is a plan view showing a state in which the spring body is attached to the base body. As can be understood from the above figures and FIG. 2, when the spring body 3 is mounted on the base body 1, the connecting portion 32 of the spring body is connected to the rear mounting wall 19 formed on the base body and the rear mounting wall formed on the cover 5. The support projection 52 is supported and fixed. In this case, the connecting portion 3
Since the fan 2 has the fan 32A, the fan is fitted between the cover 5 and the base body 1 so that the mounting state is more stable.

FIG. 10 shows a state in which the spring body is bent and greatly twisted by retracting the trigger body from the state of FIG. As described above, the spring body 3 is changed from the state shown in FIG. 9 to the state shown in FIG. 10, whereby the spring force is effectively accumulated. Although it is more preferable that the fan-shaped piece 32A is provided, it is not always necessary and may be omitted.

Next, in order to show the operation of the spring body of the present invention, an operation of ejecting liquid will be described for reference. First, the initial state is a state in which the cylinder is filled with liquid. Now, the thumb and the forefinger are put between the mouth of the container body and the other fingers are hung on the trigger body (part of the spring body), and the trigger body 2 is pulled in strongly. Trigger body 2 retracted
Rotates about the support shaft 18 of the base body 1 and presses the piston 4. At this time, the trigger body 2 and the receiving portion 21B
The force is accurately transmitted to the spring body 3 to which the pair of bridge portions 31 and 31 are connected via the same at the same time as the movement of the trigger body 2.

The piston 4 is pressed and slides in the cylinder to compress the filled liquid. The liquid that has received the compression pressure flows through the opening 20 into the second valve case 1.
2 and is jetted out of the nozzle tip (see FIG. 3). This time, when you release the power of your finger from the trigger body 2,
The trigger body 2 returns to the initial state by the elastic force of the spring body 3.

Here, a pair of bridge portions 3 of the spring body
The force is accurately transmitted to the trigger body 2 connected to the trigger body 1 and 31 via the receiving portion 21B simultaneously with the movement of the spring body 3. At this time, the piston 4 attached to the trigger body 2
Simultaneously returns to the original position, so that a negative pressure is generated in the cylinder and the liquid in the container body is transferred to the tube 10 and opening 2
0 and conversely filled into the cylinder.

Although the present invention has been described above, the present invention is not limited only to the embodiment, and it goes without saying that various other modifications are possible without departing from the essence thereof. The spring body of the present invention can be applied not only to the trigger spray and the spray container described in the embodiment but also to the same type.

[0044]

According to the present invention, since the trigger body and the spring body are connected by fitting, there is no unnecessary play between the trigger body and the spring body, and the movement and the force can be reliably transmitted to each other. By making the cross section of the bridge portion of the spring body unique as in the present invention, efficient spring force due to compression and torsion can be exhibited.

[Brief description of the drawings]

FIG. 1 is an external view showing a trigger spray.

FIG. 2 is a sectional view showing the internal structure of the trigger spray.

FIG. 3 is a cross-sectional view showing an internal structure of the trigger spray in a state where a trigger body is pulled.

4A and 4B are views showing a trigger, wherein FIG. 4A shows a state in which the distal end of the spring body is not fitted, FIG. 4B shows a state in which the distal end of the spring body is fitted, and FIG. FIG.

5A and 5B are views showing a spring body, FIG. 5A is a perspective view of the spring body, and FIG. 5B is a plan view of the spring body.

FIGS. 6A and 6B show a state in which no external force acts on the spring body. FIG. 6A is a perspective view, and FIG. 6B is a front view.

FIG. 7 shows a case where a stress is generated in the spring body and a reaction force a due to compression and a reaction force b due to torsion are applied;
(A) is a perspective view, (B) is a front view.

8A and 8B are diagrams showing a cross-sectional shape of a bridge portion, wherein FIG. 8A shows a bridge portion having a rectangular cross section, and FIG. 8B shows a bridge portion having a parallelogram cross section.

FIG. 9 is a view showing an assembled state of the spring body and the trigger body of the present invention.

FIG. 10 is a diagram illustrating a state in which the spring body is bent and largely twisted when the trigger body is retracted.

FIG. 11 specifically shows an example of the conventional trigger spray.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base body 2 ... Trigger body 21 ... Side surface 21A ... Recess 21B ... Receiving part 21B1 ... Fitting part 22 ... Finger hook part 22A ... Fitting part 3 ... Spring body 3A ... Thin part 31 ... Bridge part 32 ... Connecting part 32A ... Fan shape Piece 4 ... piston 41 ... head 5 ... cover 5A ... thin portion (hinge) 51 ... front mounting projection 52 ... rear mounting projection 6 ... nozzle 7 ... cap 8 ... primary valve 9 ... secondary valve 10 ... Tube 11 ... First valve case part 12 ... Second valve case part 13 ... Cylinder part 14 ... Front mounting receiving part 15 ... Rear mounting receiving part 16 ... Lower end part 17 ... Flange part 18 ... Support shaft part 19 ... Rear part Standing wall 20 ... Opening A ... Trigger spray P1 ... Thin part P2 ... Thin part B ... Mouth B1 ... Mouth inner wall surface B2 ... Mouth upper wall surface H ... Thin part

Claims (11)

[Claims] 1. A spring body incorporated in a trigger spray for giving a resilient force to a trigger body, the spring body comprising a pair of arch-shaped bridge portions and a connecting portion connecting the bridge portions at ends. A spring body characterized by becoming. 2. The structure according to claim 1, wherein when a compressive force acts on the bridge portion, the arch-shaped curvature is increased and at the same time, the elastic force is obtained by twisting the bridge portion. Spring body. 3. The spring body according to claim 1, wherein a front end of the bridge portion can be fitted to the trigger body. 4. A trigger body having a recess pivotally attached to a spindle portion of a trigger spray, a finger hook for catching a finger, and a fitting portion provided between the recess and the finger hook and fitted to a head of a piston. 4. The spring body according to claim 3, further comprising a receiving portion into which the spring body is fitted. 5. The spring body according to claim 1, wherein a cross section of the bridge portion is formed in a rectangular shape in a vertical direction. 6. The spring body according to claim 1, wherein a cross section of the bridge portion is formed in a vertical parallelogram shape. 7. The spring body according to claim 1, wherein a fan-shaped piece is provided upright at the connecting portion of the bridge portion so as to be stably attached to the trigger spray. 8. The spring body according to claim 2, wherein the spring body is made of a polyolefin resin. 9. A polyolefin resin spring body incorporated in a trigger spray for giving resilience to a trigger body, said spring body connecting a pair of arch-shaped bridge portions and said bridge portions at the ends. Composed of a connecting part, the front end of the bridge part can be fitted to the trigger body, and when compressive force acts on the bridge part, the arch-like curvature becomes large and the bridge part is twisted at the same time as the bridge part is resilient A spring body configured to obtain a force. 10. The trigger spray according to claim 1, wherein the spring body is incorporated. 11. The spray container according to claim 1, further comprising a trigger spray into which the spring body is incorporated.