JP2002255215A - Spring structure, trigger spray having the spring structure, and spray vessel having the trigger spray - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spring structure capable of correctly transmitting the force from a trigger to a spring, and maintaining the sufficient spring force. SOLUTION: In the spring structure X assembled with and fitted to a trigger spray A, a trigger part and a spring part 3 are integrated with each other, the spring body comprises a pair of bridge parts 31 which are parallel to each other and extended in an arch shape from both sides of the trigger part via a thin-walled part, and a connection part for coupling the bridge parts 31 with each other at a terminating end. The trigger part 2 comprises a recessed part 21A pivotably attached to a supporting shaft part 18 of the trigger spray A, a finger hooking part 22 with a finger hooked thereto, and a fitting part 22A provided between the recessed part 21A and the finger hooking part 22 and fitted in a head part 41 of a piston. The section of the bridge part 31 is formed parallelogram in the vertical direction, and when the compression is exerted in the bridge part, the curvature of the arch shape is increased, and at the same time, the bridge part is twisted to obtain the repulsive force.

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 attached to a spray container to compress the liquid in a cylinder by the turning force of a trigger, and is ejected from a nozzle. The present invention relates to a spring structure.

[0002]

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

FIG. 13 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 in the valve case 103, a housing 106 inserted and fixed in the valve case 103, and a nozzle 107 press-fitted and fixed in the base body. A plunger 109 having a piston 108 that slides in a cylinder formed in a base body, a trigger 110 for pressing the plunger, and a spring 111 for resiliently supporting the trigger with respect to the base body.
And a secondary valve 112 inserted in the valve case of the base body.

In the trigger spray having such a structure, in order to eject the liquid in the container main body from the nozzle 107, first, the trigger 110 is pulled in by catching a finger from an initial state in which the liquid is filled in the cylinder. . As a result, the plunger 109 is pushed and the piston 108
Compresses the liquid in the cylinder of the housing 106.

[0005] The compressed liquid passes through the 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 110, the trigger 110 returns to its original state due to the elastic pressure of the spring 111. At this time, the liquid in the container body
Then, after passing through the primary valve 104, the cylinder is filled in the cylinder and is in the initial state.

The trigger spray having such a structure has a cap 101, a packing 102, a primary valve 104, a valve case 103, a tube 105, a housing 106, a nozzle 107, a piston 108, a plunger 109, a trigger 110, A spring 111;
And a total of 12 secondary valves 112 are required. Therefore, there is a disadvantage that an assembling process for manufacturing them is complicated and man-hours are increased.

Furthermore, in such a trigger spray, the number of parts should be as small as possible from the viewpoint of maintaining the liquid tightness and also in order to reduce the failure rate. Among these components, in particular, the spring is an important component for applying resilient pressure to the trigger, so that it is necessary that the spring can sufficiently exhibit the spring force. Also, the connection between the two must be reliably maintained so that the force of the trigger can be accurately transmitted to the spring. In addition, in order to maintain the connected state with respect to the moving trigger, the degree of freedom of movement between the two at the connecting portion must also be ensured.

[0008]

SUMMARY OF THE INVENTION In view of such circumstances, the present invention is to overcome the above-mentioned problems and to provide a spring structure having a reduced number of parts as a trigger spray. Moreover, it is another object of the present invention to provide a spring structure capable of accurately transmitting a force from a trigger to a spring and maintaining a sufficient spring force. Another object of the present invention is to provide a trigger spray incorporating the same and a spray container provided with the trigger spray.

[0009]

Means for Solving the Problems Thus, the present inventor has:
As a result of intensive research on such a background,
The present inventors have found that the number of components can be reduced by integrating the conventional spring body with the trigger, and that a sufficient spring force can be maintained by limiting the spring body to a certain shape. Is completed.

That is, the present invention provides (1) a spring structure which is incorporated and attached to a trigger spray,
The trigger portion and the spring portion are present in an integrated spring structure.

[0011] (2) A spring structure which is incorporated into and attached to the trigger spray, wherein the trigger portion and the spring portion are integrated, and the spring body is provided on both sides of the trigger portion via thin portions. The spring structure comprises a pair of bridge portions extending parallel to each other and in an arch shape, and a connecting portion connecting the bridge portions at the ends.

(3) In the case where a compressive force acts on the bridge portion, the spring structure is configured to obtain an elastic force by increasing the arch-like curvature and simultaneously twisting the bridge portion. Exist.

Also, (4) a trigger portion is provided on the head of the piston provided between the concave portion and the finger portion, the concave portion being pivotally attached to the spindle portion of the trigger spray, the finger hook portion for catching a finger. And a fitting portion to be fitted.

(5) The cross section of the bridge portion is formed in a vertical rectangular shape in the spring structure.

(6) The bridge structure has a spring structure in which the cross section of the bridge portion is formed in a vertical parallelogram.

(7) The spring structure has a fan-shaped piece erected at the connecting portion of the bridge portion so as to be stably attached to the trigger spray.

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

Also, (9) a spring structure which is incorporated and attached to the trigger spray, wherein the trigger portion and the spring portion are integrated, and the spring body has a thin portion from both side surfaces of the trigger portion. A pair of bridge portions extending parallel to each other and in an arch shape, and a connecting portion connecting the bridge portions at the ends, and the trigger portion catches a finger with a concave portion pivotally attached to a spindle portion of the trigger spray. When a fitting portion provided between the finger hook portion, the concave portion and the finger hook portion and fitted to the head of the piston is provided, and a cross section of the bridge portion is formed in a vertical parallelogram shape, and a compressive force acts on the bridge portion. The spring structure has a structure in which the arch-like curvature is increased and the bridge portion is twisted at the same time as the elasticity is obtained by the elasticity.

Further, (10) the present invention resides in any one of the trigger sprays, wherein the spring structure is incorporated.

Further, (11) any one of the above-mentioned ones provided with a trigger spray incorporating the above-mentioned spring structure.
In a spray container.

The present invention, if it meets this purpose,
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 structure can also be adopted.

According to the spring structure of the present invention, since the trigger portion and the spring portion are integrated, the number of assembling steps at the time of manufacturing is reduced, failures are reduced, and the liquid tightness is further improved. . In addition, since the spring structure has portions that extend in an arch shape from both side surfaces of the trigger portion through thin portions, the connection between the trigger portion and the spring portion is reliable and the spring force of the spring portion is effectively reduced. It can be used as a trigger, and its spring force is also sufficient.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a spring structure 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 structure 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. In this trigger spray A, a trigger 2 is rotatably attached to a base body 1 serving as a frame of the trigger spray A.
By pulling the cylinder part 1 which is a part of the base body 1
The liquid in the container 3 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 (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 spring structure X attached to the base body 1 to resiliently press the piston 4 (a trigger portion 2 for pushing a piston by catching a finger, and the trigger portion 2 is elastically supported by the base body 1). And a secondary valve 9 mounted between the nozzle 6 and the base body 1.
And

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 body 1 includes a first valve case portion 11 formed in a vertical direction and a second valve case portion 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. 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 has two mounting projections, front and rear,
A front mounting projection 51 is mounted on a front mounting receiving portion 14 formed on an extension of the second valve case portion 12, and a rear mounting projection 52 is similarly formed on a rear portion of the base. It is attached to the receiving part 15. 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 is rotatable up and down from the thin portion 5A.

It is preferable that both the cover 5 and the nozzle 6 are integrally formed of a polyolefin resin, for example, polypropylene. A cylinder part 13 is formed in a part of the base body 1, and the piston 4 reciprocates in this cylinder while sliding. In order to press the piston 4, a spring structure X in which the trigger portion 2 and the spring portion 3 are integrated is attached to the base body 1. The trigger part 2 of the spring structure X has an arched wing-shaped structure so that a finger can be stably hooked.

At the upper end of the concave portion 21A, it is pivotally attached to the support shaft portion 18 formed on the base body 1, and the fitting portion 22A, which is a predetermined distance below, is fitted with the head 41 of the piston fitted therein. Therefore, when a finger or the like is put on the trigger portion 2 and pulled to the right in the drawing, the head 41 of the piston 4 is pressed, and the piston 4 similarly slides rightward in the cylinder.

The spring structure X can steadily return to the original state when the force is released by releasing a finger or the like after the trigger portion 2 is pulled by the elastic force of the spring portion 3. Here, the spring structure X, that is, the trigger portion 2 and the spring portion 3 are preferably integrally molded (eg, injection molded) of a polyolefin-based resin, preferably polypropylene, in order to obtain a bonding strength between them.

Here, FIGS. 4A and 4B are perspective views of the spring structure X. FIG. 4A shows a state in which the spring portion 3 is located along the trigger portion 2, and FIG. The state shown in FIG. FIG. 5 is a front view, and FIG. 6 is a side view. As described above, the spring structure X has the trigger portion 2 and the spring portion 3 integrated with each other.

That is, the spring structure X is
And a pair of bridge portions 31 and 3 extending in parallel to each other and in an arch shape from both side surfaces 21 and 21 of the trigger portion 2 through thin portions H.
1 and a connecting portion 32 for connecting the bridge portions 31, 31 at the ends. The force is properly transmitted by the thin portion H at the root of the spring portion 3 while maintaining the freedom of movement with the trigger portion. . In other words, the thin portion H has a function of securely connecting the trigger portion 2 and the spring portion 3 and giving both the freedom of movement.

Therefore, in a state where the spring structure X is incorporated and attached to the trigger spray A, when the trigger portion 2 is moved, the spring portion 3 accurately follows the movement and exerts an elastic force. . Then, portions that extend in parallel to each other and in an arch shape from both side surfaces 21 and 21 of the trigger portion 2, that is, a pair of bridge portions 31 and 31.
Are formed in a rectangular shape in the vertical direction (side direction of the trigger). The vertical direction 3 corresponds to the spring structure X
Means the up and down direction in a state where the trigger spray A is properly set.

Here, as described later, when a finger is hung on the finger hook 22 of the trigger 2 and the trigger 2 is strongly pulled and compressed as indicated by the arrow in FIG. Is resilient due to the reaction force a (thin arrow) applied to the bridge portion 31. Further, a reaction force b (thin arrow) due to torsion (thick arrow B) is applied to the bridge portion 31 of the spring portion 3. Therefore, the resilient force of the spring portion 3 becomes a resilient force that combines the two reactive forces by adding the reaction force a due to the compression and the reaction force b due to the twist. By these two reaction forces, the elastic force of the spring portion 3 is efficiently exerted.

FIGS. 7 and 8 are views for explaining the deformation applied to the bridge portion and the reaction force generated thereby. FIG.
Indicates a state in which no stress acts on the spring portion 3 (A).
Is a perspective view and (B) is a front view. FIG.
(A) is a perspective view, and (B) is a front view. It is. As described above, the spring structure X of the present invention can provide an efficient spring force.

Here, the bridge portion 3 of the spring structure X
1 is formed in a rectangular shape in the vertical direction (FIG. 9).
(See (A)), and the reaction force due to the torsion and the compression force was obtained. Of these, in order to more easily obtain the reaction force due to the torsion, the cross section should be a parallelogram in the vertical direction (see FIG. 9B). 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 polyacetal resin as the material of the spring portion, in the spring structure X of the present invention, the spring portion 3 and the trigger portion 2 can be integrated to secure the mounting stability. In addition, it is possible to employ a polyolefin resin, for example, a polypropylene resin, which is advantageous in recycling. When attaching the spring structure X to the trigger spray A, the trigger part 2 is attached to the base body 1 of the trigger spray A, and at the same time, the trigger part 2 and the piston 4 are fitted and attached, so that the spring structure X can be securely fixed.

FIG. 10 is a plan view showing a state in which the spring structure including the trigger portion 2 is attached to the base body 1. FIG. As can be understood from the above figures and FIG. 2, when the spring structure X is attached to the base body 1, the connecting portion 32 of the spring structure is formed on the rear standing wall 19 of the base body and the cover 5. It is in a state of being supported and fixed between the rear mounting projection 52. In this case, the fan-shaped piece 32
Due to the provision of A, the fan-shaped piece is fitted between the cover 5 and the base body 1, and the mounting state is more stable.

FIG. 11 shows a state in which the trigger portion 2 is pulled in from the state of FIG. As described above, the spring portion 3 of the spring structure changes from the state shown in FIG. 10 to the state shown in FIG. 11, whereby the spring force is effectively accumulated. However, it is more preferable, but not necessary, that the fan-shaped piece 32A be provided, and the perspective view shown in FIG. 12 shows a structure having no fan-shaped piece.

Next, in order to show the operation of the spring structure of the present invention, an operation of injecting a liquid will be described for reference. First,
The initial state is a state in which the liquid is filled in the cylinder. Now, the thumb and the forefinger are put between the mouth of the container body and the other fingers are hung on the trigger part (part of the spring structure), and the trigger part 2 is pulled in strongly. The retracted trigger portion 2 rotates about the support shaft portion 18 of the base body 1 as a fulcrum and presses the piston 4.

At this time, a force is accurately transmitted to the spring portion 3 integrated with the trigger portion 2 via the thin portion H simultaneously with the movement of the trigger portion. The piston 4 is pressed and slides in the cylinder to compress the filled liquid. The liquid that has received the compression pressure is ejected from the nozzle tip through the opening 20 through the second valve case 12 (see FIG. 3).

Next, when the force of the finger is released from the trigger portion 2, the trigger portion 2 returns to the initial state by the elastic force of the spring portion 3. Here, the force of the spring portion 3 is reliably transmitted to the trigger portion 2 integrated with the spring portion 3 via the thin portion H. At this time, the piston 4 attached to the trigger portion 2 returns to the original position at the same time, so that a negative pressure is generated in the cylinder, and the liquid in the container body passes through the tube 10 and the opening 20, and conversely, the inside of the cylinder Is filled.

The trigger spray according to the embodiment of the present invention described above has eight parts, so that it is extremely easy to assemble and the number of failures is reduced. Further, since the valve and the piston can be made of polyethylene resin and the other parts can be made of polypropylene resin, it is possible to manufacture with a so-called polyolefin resin, and it is possible to sufficiently cope with recycling.

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 can be made without departing from the essence of the present invention. The spring structure of the present invention is applicable not only to the trigger spray and the spray container described in the embodiment but also to the same type.

[0045]

According to the present invention, since the trigger structure and the spring portion are integrated in the spring structure, the number of parts for the trigger spray is reduced as compared with the prior art. For this reason, the number of assembly steps and the failure rate as a product also decrease. Moreover,
Since the trigger portion and the spring portion are securely connected and the degree of freedom of movement is corrected because of the thin portion, the movement and force of the trigger portion can be reliably transmitted to the spring portion without rattling. Also, when the trigger section returns, the movement and force of the spring section can be reliably transmitted to the trigger section. By making the cross section of the bridge portion of the spring portion unique, 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 sectional view showing an internal structure of a trigger spray in a state where a trigger is pulled.

FIG. 4 shows a perspective view of a spring structure of the present invention.

FIG. 5 shows a front view of the spring structure of the present invention.

FIG. 6 shows a side view of the spring structure of the present invention.

FIGS. 7A and 7B are views showing a state where no stress is applied to the spring portion, wherein FIG. 7A is a perspective view and FIG. 7B is a front view.

FIG. 8 shows a case where a stress is generated in a spring portion 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.

9A and 9B are diagrams showing a cross-sectional shape of a bridge portion, wherein FIG. 9A shows a bridge portion having a rectangular cross section, and FIG. 9B shows a bridge portion having a parallelogram cross section.

FIG. 10 is a diagram illustrating a state in which a spring structure including a trigger portion is attached to a base body.

FIG. 11 is a diagram illustrating a state in which the spring portion is bent and largely twisted by retracting the trigger portion;

FIG. 12 is a perspective view showing a spring structure having no fan-shaped piece.

FIG. 13 specifically shows an example of the conventional trigger spray.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base body 2 ... Trigger part 21 ... Side surface 21A ... Depression 22 ... Finger hook part 22A ... Fitting part 3 ... Spring part 3A ... Thin part 31 ... Bridge part 32 ... Connection part 32A ... Fan-shaped piece 4 ... Piston 41 ... Head DESCRIPTION OF SYMBOLS 5 ... Cover 5A ... Thin part (hinge part) 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 standing wall 20 Opening A A trigger Spray P1: Thin portion P2: Thin portion B: Mouth B1: Inner wall surface B2: Mouth upper wall surface H: Thin portion X: Spring structure

Claims (11)

[Claims] 1. A spring structure incorporated in and attached to a trigger spray, wherein the trigger portion and the spring portion are integrated. 2. A spring structure incorporated in and attached to a trigger spray, wherein a trigger portion and a spring portion are integrated, and the spring members are parallel to each other via thin portions from both side surfaces of the trigger portion. A spring structure comprising: a pair of bridge portions extending in an arch shape; and a connecting portion connecting the bridge portions at ends. 3. The structure according to claim 2, 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 structure. 4. A trigger portion, wherein the trigger portion is pivotally attached to a spindle portion of the trigger spray, a finger hook portion for catching a finger,
The spring structure according to claim 2, further comprising a fitting portion provided between the concave portion and the finger hook portion, the fitting portion being fitted into a head of the piston. 5. The spring structure according to claim 2, wherein a cross section of the bridge portion is formed in a rectangular shape in a vertical direction. 6. The spring structure according to claim 2, wherein a cross section of the bridge portion is formed in a vertical parallelogram shape. 7. The spring structure according to claim 2, 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 structure according to claim 2, wherein the spring structure is made of a polyolefin resin. 9. A spring structure incorporated and attached to a trigger spray, wherein a trigger portion and a spring portion are integrated, and the spring members are parallel to each other via thin portions from both side surfaces of the trigger portion. And a pair of bridge portions extending in an arch shape, and a connecting portion connecting the bridge portions at the ends, and a trigger portion is pivotally attached to a spindle portion of the trigger spray, a finger hook portion for catching a finger, and a recess portion. A fitting portion provided between the finger hook portion and the head portion of the piston, wherein a cross section of the bridge portion is formed in a parallelogram shape in a vertical direction, and when a compressive force acts on the bridge portion, an arch-shaped curvature is provided. The spring structure is characterized in that the elasticity is obtained by increasing the size and twisting the bridge portion at the same time. 10. The trigger spray according to claim 1, wherein the spring structure is incorporated. 11. The spray container according to claim 1, further comprising a trigger spray into which the spring structure is incorporated.