JPS60183056A - Liquid flow pattern change-over mechanism - Google Patents

Abstract

PURPOSE:To prevent a liquid from converting to a vortex stream, by providing a spinner to the leading end of the flowline communicated with a cylinder and attaching a nozzle cap having an orifice formed to the center thereof the spinner in a freely revolvable manner while extending a ring shaped part from the rear surface of the nozzle cap. CONSTITUTION:When a nozzle cap 20 is revolved to revolve a trigger in such a state that flowlines 48, 52 from tangential directions are arranged and a piston 16 is reciprocated, a pressurized liquid is flowed into the flowlines 52, 48 from a flowline 14 through a flowline 32. These flowlines 52, 48 are positioned in directions tangential to the peripheral surface of the circular recessed part 40 of a spinner main body and the pressurized liquid is converted to a vortex stream when flowed into the circular recessed part from the flowlines 48, 52. When the nozzle cap 20 is revolved from the position, where the flowlines 48, 52 are arranged, to a clockwise direction, the flowline 50 of the nozzle cap 20 is aligned with the flowline 54 of the spinner. When the pressurized liquid is flowed in this state, said liquid is flowed out as a jet stream from the orifice.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid flow pattern switching mechanism for switching effluent from an atomizer or dispenser into a spray, jet, or off state.

Generally, sprayers and disbenzers (hereinafter referred to as sprayers, etc.)
The liquid contained in the container is sucked up into the cylinder by the sliding of the piston, pressurized, and discharged from the orifice of the nozzle. Generally, in this type of sprayer, the state of the liquid flow, that is, the liquid flow pattern, is determined in advance.

Therefore, only a fixed liquid flow pattern can be obtained, and even if a different liquid flow pattern is required, the liquid flow pattern cannot be changed. To solve this problem, a rotatable nozzle (generally called a nozzle cap) is screwed onto the tip of a sprayer, etc., and by rotating the nozzle cap, the distance between the oriice of the nozzle cap and the spinner can be adjusted. Mechanisms for switching liquid flow patterns are known. However, with this switching mechanism, normally a spray stream is obtained, but a jet stream cannot be obtained unless the nozzle cap is sufficiently rotated to move away from the spinner. Therefore, the nozzle cap is I! There is a risk that the tip of the J fog device may come off and be lost.

In order to eliminate such drawbacks of the liquid flow and C-turn switching mechanism with a nozzle cap screwed on, a nozzle cap is not screwed on, but is attached to the tip of the sprayer, etc., rotatably but immovably. Are known. For example, special public relations
According to No. 35681, a spinner is fixed at the tip of a flow path communicating with a cylinder, and a nozzle cap is attached to the spinner so as to be rotatable but immovable. The orifice of the nozzle cap is formed offset from the center, and a plurality of liquid flow regulating parts for jet flow, spray flow, etc. are formed on the front surface of the spinner. In such a liquid flow pattern switching mechanism, the nozzle cap is rotated to align the orifice with a desired liquid flow regulating portion, thereby switching the liquid flow pattern. According to this configuration, a desired liquid flow pattern can be easily obtained without losing the nozzle cap. However, the structure of the spinner and nozzle cap is complicated, and since the orifice is not centered, the orifice position and outflow position vary depending on the switching of the liquid flow pattern. Such drawbacks can be similarly pointed out in other known configurations.

The object of the present invention is to provide a liquid flow pattern switching mechanism that eliminates the drawbacks of the above-mentioned known techniques.

To achieve this objective, according to the invention, the orifice is formed in the center of the nozzle cap. The annular portion extends from the back surface of the nozzle cap, and at least one inner flow path including a flow path extending in a tangential direction of the curved surface of the annular portion is formed in the annular portion. Additionally, at least one outer channel is formed at the tip of the spinner, including a tangential channel aligned with the tangential channel of the nozzle cap to promote swirling of the liquid flow. In such a configuration, the annular portion protrudes from the back surface of the nozzle cap, and at least one inner flow path is formed in the annular portion and at least one outer flow path is formed at the tip of the spinner. Simplified. Furthermore, since the orifice is formed at the center of the nozzle camp, the outflow position does not change even if the nozzle cap is rotated.

Embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 1, the liquid flow pattern switching mechanism 10 is attached to the tip of a flow path 14 communicating with the cylinder of the sprayer 12. The illustrated sprayer 12 is of a trigger type, and a piston 16 that slides in a cylinder is disposed in a flow path 14. However, in so-called three-way trigger-type atomizers, the piston is disposed not in the flow path 14 but in an inclined cylinder. It goes without saying that the liquid flow pattern switching mechanism 10 may be attached to a dispenser instead of a sprayer.

As shown in FIGS. 1 and 2, the liquid flow pattern switching mechanism 10 includes a spinner 18 attached to the tip of a piston 16, and a nozzle cap 20 rotatably attached to the spinner. There is. Note that the spinner 18 is attached to the tip of the flow path 14 instead of the piston 16 in the three-way trigger type sprayer. In other words, it goes without saying that the spinner 18 only needs to be at the tip of the flow path 14, whether or not it is attached to the piston. The spinner 18 extends rearward and the piston 16
The spinner body 28 has an annular portion 22 that is fitted into the nozzle cap 20, and a spinner main body 28 that has an engagement recess 26 formed on its outer surface, into which a locking protrusion 24 formed on the nozzle cap 20 is fitted. Here, the spinner 18 is integrally molded with a trigger 32 via a hinge 30, and the trigger is further integrally molded with a housing 36 via a hinge 34. By integrally molding the spinner 18 and the trigger 32 in this manner, the number of independent members is reduced and assembly can be easily performed. Furthermore, two axial channels 38 communicating with the channel 14 are formed in the spinner body 28, and a circular recess 40 is formed in the tip of the spinner body. An annular groove 42 is provided on the outer periphery of the circular recess 40. On the other hand, the nozzle cap 20 has an orifice 44 at its center, and an annular portion 46 that fits into an annular groove 42 of the spinner body extends from the back side of the nozzle cap 46 . A flow path 48 extending in the tangential direction of the circumferential surface of the annular portion 46 and a radial flow path 50 spaced 60' away from this flow path in the counter-time direction (one or less when viewed from the front of the atomizer) are connected to the annular portion 46. (See Figure 3). Also, a channel 52 perfectly aligned with the channel 48 of the annular portion, and a radial channel 54 spaced 60' clockwise from this channel are formed at the tip of the spinner body 28, and the channel 52 is formed at the tip of the body 28. 54 is a flow path 50
They are located so that they can be aligned with each other and are spaced apart by 120 degrees in a clockwise direction (see FIG. 4).

The operation of the liquid flow pattern switching mechanism 10 configured as described above will be explained. For example, suppose the nozzle cap 20 is rotated to align the tangential channels 48', 52 as shown in FIG. 5A. In this state, the trigger 32 is rotated to reciprocate and catch the piston 16, and the pressurized liquid is transferred to the flow path 14.
It passes through channel 38 and flows into channel 52.48. Since these passages 52° 48 are located tangentially to the circumferential surface of the circular recess 40 of the spinner body, the pressurized liquid flows through the passages 5.
As it enters the circular recess from 2° 48, it is swirled and exits the orifice chair 44 as a spray liquid. Thus, by aligning the tangential channels 48,52, a spray liquid is obtained.

Nozzle cap 20 from the position where flow paths 48 and 52 are aligned
120' clockwise, the nozzle camp flow path 50 becomes the spinner flow path 54, as shown in FIG. 5B.
are aligned. Even if the pressurized liquid flows from the flow paths 14 and 38 to the flow paths 54 and 50 in this state, since these flow paths 54 and 50 are formed in the radial direction, the pressurized liquid will not be turned into a vortex flow. It flows into the circular recess 40 and exits the orifice 44 as a mere jet. That is, the radial flow path 50
．． When 5.4 are aligned, a jet is obtained.

If the nozzle cap 20 is further rotated 120 DEG clockwise, the spinner channels 52,54 are closed by the annular portion 42 of the nozzle cap, resulting in the so-called OFF position (see FIG. 5C).

As shown in FIGS. 58 to 5C, in the above embodiment, by rotating the nozzle cap 20i by 120 degrees, the spray liquid, jet stream, and off are turned off.
Each liquid flow pattern is obtained once for each rotation (no liquid flow occurs in the OFF state, but a pattern in which no liquid flow occurs is also considered to be one liquid flow pattern). Since no liquid flow occurs when the squirt device is off, it is possible to prevent the liquid from inadvertently flowing out when the squirt device is not in use, and also to prevent the liquid from evaporating or leaking. Further, since the orifice 44 is formed in the center, the outflow position does not change. Furthermore, the nozzle cap 20 only needs to be rotated and there is no need to move it toward or away from the spinner 18, so there is no risk of the nozzle cap coming off. Here, nozzle cap 2
If at least one inner flow path such as the flow paths 48 and 50 formed in the spinner 0 and outer flow paths such as the flow paths 52 and 54 formed in the spinner 18 are formed, as will be described later, Even if the annular portion 22 is made to protrude from the leg and the back of the nozzle cap, the configuration is simplified compared to known configurations.

Furthermore, as shown in Figure 3, 5PRAY, JET
.

Liquid flow pattern display such as OFF on the nozzle cap 20
If it is provided on the outer wall of the nozzle cap, as shown in FIGS. 58 to 5C, the corresponding display is located on the upper surface of the nozzle cap, so that the liquid flow pattern can be known at a glance, which is preferable.

If the radial passage 54 of the spinner 18 is removed and the radial passage 50 of the nozzle cap 20 is spaced 120' counterclockwise with respect to the tangential passage 48,
Similar to the above ° embodiment, the nozzle cap 'z 120'
The liquid flow pattern can be changed by rotating the liquid flow pattern. In such a configuration, from the spray liquid pattern shown in FIG. 6A, the nozzle cap 20i
If rotated by °, the flow paths 50 and 52 will be aligned (6th B
(see figure).

At this time, the pressurized liquid is transferred from the channels 14 and 38 to the channels 52° and 50°.
Even when the pressurized liquid flows into the circular recess 40, the pressurized liquid flows into the circular recess 40 and flows out from the orifice 44 as a jet without being turned into a vortex because the flow path 50 extends in the radial direction. Needless to say, if the nozzle camp 20 is further moved 1200 times in the opening direction, it will be turned off (see Fig. 6C).

Furthermore, a third embodiment is shown in FIGS. 78 to 7C. In this embodiment, the radial passage 50 of the nozzle cap 20
is removed and the radial passage 54 of the spinner 18 is spaced 1200 degrees clockwise with respect to the passage 52 so that the passage 48
It differs from the first embodiment in that it is smaller than the first embodiment. If the nozzle camp 20 is rotated 120 degrees in the training direction from the position shown in FIG. 7A where the spray liquid is obtained, the position shown in FIG.
As shown, the nozzle cap channel 48 is aligned with the spinner channel 54. However, the flow path 54 is also formed smaller than the flow path 48, so that the liquid from the flow path 54 does not collide with the side wall of the flow path 48. Therefore, the flow path 14
,．． Even if the pressurized liquid flows from 38 to the channels 54' and 48,
It flows into the circular recess 40 without turning into a vortex and flows out from the orifice 44 as a jet. Furthermore, nozzle camp, 2
It turns OFF if it rotates 120 degrees clockwise (7th
(See Figure C).

Of the three embodiments described above, the first embodiment has two inner channels and two outer channels, and the second embodiment has two inner channels and two outer channels. In the third embodiment, one inner flow path and one outer flow path are formed, and the other two are formed. However, it is also possible to form one inner flow path and one outer flow path. , the liquid flow pattern can be switched in the same way.

In the fourth embodiment shown in FIGS. 88 to 8C, the 6A
One composite flow path 56 is formed in the nozzle cap 20 by removing the barrier between the flow paths 48 and 50 in the figure. Even with such a configuration, in FIG. 8A, the flow path 52,
As it enters the circular recess 40 from 56, the pressurized liquid is swirled because the composite channel acts like a tangential channel. Also, in FIG. 8B, the composite channel 56 functions like a radial channel, and the pressurized liquid flows out as a jet without being swirled. FIG. 8C shows the off state.

In the above four embodiments, the nozzle cap 20 is rotated at 120°.
It is configured to switch the liquid flow pattern every time it rotates,
Each liquid flow pattern is obtained once during one revolution of the nozzle cap. However, it goes without saying that the rotation angle of the nozzle cap 20 for switching is not limited to 12o0, and may be larger or smaller than 120°.

However, if the angle is set to 120°, each liquid flow pattern can be obtained once during one rotation of the nozzle cap 20, and this can be said to be the most common. For example, a fifth embodiment in which the synthesis channel 56 in the fourth embodiment shown in FIGS. 8A to 8C is made smaller is shown in FIGS. 9A to 9C. Also in this example,
The reduced composite channel 58 functions as a tangential channel in FIG. 9A and as a radial channel in FIG. 9B. In the embodiment, the nozzle cap 20 can be turned from a spray pattern to a jet pattern by rotating it clockwise by 20 degrees, and can be turned off by further rotating it by 40 degrees in the same direction.

In other words, all desired switching can be performed within a rotation of the nozzle cap 20,060 degrees.

The five embodiments have been described above, but if the two sets of corresponding channels are configured to be perfectly aligned as in the first embodiment (see Figures 58 to 5C), the pressure can be increased. This is preferred because the liquid is completely swirled in the spray liquid pattern, while swirling is completely prevented in the jet pattern.

As described above, according to the liquid flow pattern switching mechanism according to the present invention, a spinner is provided at the tip of the flow path communicating with the cylinder,
A nozzle cap with an orifice formed in the center is rotatably attached to the spinner, and an annular portion extends from the back of the nozzle cap.

At least one inner flow path including a flow path extending in the tangential direction of the curved surface of the annular portion is formed in the annular portion of the nozzle camp, and is aligned with the flow path in the tangential direction of the nozzle cap to create a vortex flow of the liquid flow. At least one outer channel including a tangential channel that promotes the flow is formed at the tip of the spinner, and the alignment of the inner channel and the outer channel is changed by rotating the nozzle camp. Switching liquid flow pattern.

In such a configuration, the annular portion protrudes from the back of the nozzle cap, and at least one inner flow path is formed in this annular portion and at least one outer flow path is formed at the tip of the spinner, so the configuration is simple. be converted into Furthermore, since the orifice is formed at the center of the nozzle cap, the outflow position does not change even if the nozzle cap is rotated. Furthermore, there is no need to move the nozzle cap in the axial direction, and therefore there is no risk of the nozzle camp coming off.

The above embodiments are for illustrating this invention, and are not intended to limit this invention in any way, and any modifications, alterations, etc. made within the technical scope of this invention are also included in this invention. Needless to say, it is included.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view of a trigger type sprayer equipped with a liquid flow pattern switching mechanism according to the present invention, FIG. 2 is a vertical sectional view of the liquid flow pattern switching mechanism shown in FIG. 1, and FIG. FIG. 4 is a cross-sectional view of the nozzle cap along line XX in FIG. 2, FIG. 4 is a cross-sectional view of the spinner along line XX in FIG. 2, and FIGS. 5A to 9C are each embodiment FIG. 3 is a cross-sectional view of the nozzle cap and spinner taken along line XX of FIG. 2 showing the alignment of the inner and outer flow paths in FIG. 10...Liquid flow pattern switching mechanism, 14...Flow path, 1
8... Spinner, 20... Nozzle camp, 40...
- Circular recess, 44... orifice, 46... annular portion, 48°50, . 56.58... (inner) flow path, 52
．． 54...(Outer) flow path patent applicant Takao Warashina, patent attorney representing CANYON Co., Ltd.

Claims (1)

[Claims] (A spinner is provided at the tip of the flow path communicating with the cylinder,
O2 in the center. A nozzle cap in which a refit is formed is rotatably attached to a spinner, an annular portion extends from the back surface of the nozzle cap, and at least one inner flow path including a flow path extending tangentially to the curved surface of the annular portion is connected to the nozzle. At least one outer channel is formed in the annular portion of the cap and at the tip of the spinner, including a tangential channel that is aligned with the tangential channel of the nozzle cap to promote swirling of the liquid flow. The liquid flow pattern switching mechanism changes the liquid flow pattern by changing the alignment of the inner flow path and the outer flow path by rotating the nozzle cap. (2) The inner flow path and the outer flow path each include a tangential flow path and a flow path extending in the radial direction, and the nozzle cap is held at a predetermined angle from the position where the pair of tangential flow paths are aligned with each other. 2. The liquid flow pattern switching mechanism according to claim 1, wherein the inner flow path and the outer flow path are formed at positions where the pair of radial flow paths are aligned with each other when rotated. (3) The liquid flow pattern switching mechanism according to claim 2, wherein the predetermined angle of the nozzle cap is 120 degrees, and the liquid flow pattern switching mechanism is turned off when the nozzle camp is further rotated in the same direction. (4) The inner flow path is a tangential flow path and 1 with respect to this flow path.
20' The liquid flow pattern switching mechanism according to claim 1, wherein the outer flow passages include flow passages extending in the radial direction and separated from each other, and the outer flow passages include only tangential flow passages. (5) The outer flow path is a tangential flow path and 1 with respect to this flow path.
2. The liquid flow pattern switching mechanism according to claim 1, wherein the liquid flow pattern switching mechanism includes flow channels extending in the radial direction and separated by 20 degrees, and the inner flow channel includes only flow channels in a tangential direction. (6) The inner flow path and the outer flow path each include only a tangential flow path, and the tangential flow path constituting the inner flow path extends in the radial direction instead of the tangential direction on the negative side, and The liquid flow pattern switching device according to claim 1, wherein the opening area is larger than the opening area of the outer flow path! .