JPS6024447Y2 - manual spray device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a manual spraying device.

Manual atomizers are widely used as household items such as ironing misters and perfume sprays.

The operating principle of these sprayers fundamentally utilizes the principle of a pump, but with conventional sprayers, when the pump starts operating, sufficient pressure is not stored in the cylinder inside the pump. Since the first spray occurs, unless the piston is pushed down rapidly with a very strong force, the first mist that is sprayed becomes large droplets, which have the disadvantage of dripping and wetting the floor.

In order to overcome this drawback, a method is known in which the valve on the outlet side of the pump cylinder is closed with an elastic body such as a spring so that it opens only when the internal pressure of the cylinder becomes greater than the elasticity of the spring. However, with this method, the piston must be reciprocated a considerable number of times before the internal pressure of the cylinder becomes high enough and spraying begins.

Furthermore, these devices have complex structures, have a large number of parts, and are difficult to manufacture.

Instead of closing the valve on the outlet side of the pump cylinder with an elastic body such as a spring, a slider tube that operates as the valve on the outlet side is inserted into the pump cylinder, and the pressure inside the cylinder increases when the spray head is pushed down. There is also a known method in which the slider tube is further lowered and the valve on the outlet side is opened when the slider tube is opened (Japanese Patent Publication No. 51-11804).

As a device using this slider tube,
14 have been proposed, but these devices do not have a simple structure of the slider tube, and furthermore, the intake and exhaust paths when the slider tube is activated are long and complicated, and therefore the number of parts is large. There are many difficulties in production.

In addition, Utility Model Application No. 52-06629 describes a manual spraying device using a sliding cylindrical valve (slider tube) that operates as a valve on the outlet side of a pump cylinder, which overcomes the above-mentioned inadequacies and starts spraying. A manual sprayer is disclosed that has a simplified structure, which allows a stable spray state to be obtained with fewer piston reciprocations, and in which all main parts such as a valve body including an operating valve can be housed in a cylinder.

More specifically, this manual sprayer has a large-diameter upper cylinder and a small-diameter lower cylinder inside the housing in the middle of the passage from the suction pipe to the spray nozzle. A pressurized chamber containing a valve is provided,
In a manual spray device that has a structure in which when the contents of the pressurized chamber are compressed by pressing down on the spray button, the cylindrical valve is further pushed down and the stop valve at the top of the cylindrical valve is released. and one side hole in the lower part of the cylinder, and the cylindrical valve inside the cylinder has a packet placed between the upper and lower side holes of the large diameter cylinder in a stationary state, and the cylindrical valve that reaches into the small diameter cylinder. A packet is provided at the lower end of the valve, and a passage extending from the lower end to the upper side of the upper packet is provided inside the cylindrical valve, and a side hole is provided slightly above the upper packet. An intake passage leading from the side hole to the outside of the spray device is formed, and when the cylindrical valve reaches the lower end, a passage inside the cylindrical valve, and an exhaust passage leading from the side hole of the cylindrical valve to the side hole at the bottom of the large diameter cylinder. It is characterized by the formation of

However, this device has the disadvantage that it is somewhat difficult to operate because it has three packet sliding parts.

The present invention improves these points and provides a manual spraying device that operates effectively even when spraying in an inverted position and prevents liquid from spilling.

According to the present invention, a part of the upper large-diameter cylinder and a part of the lower small-diameter cylinder are installed in the housing in the middle of the passage from the suction pipe to the spray nozzle, and a sliding cylindrical valve is installed astride both cylinders. In a manual spray device having a structure in which a pressurized chamber is provided, and when the contents of the pressurized chamber are compressed by pressing down on a spray button, the cylindrical valve is further depressed and a stop valve at the top of the cylindrical valve is released. The two-cylindrical valve has a small-diameter portion with its lower end facing downward as a packet that closely slides on a part of the small-diameter cylinder of the housing, and a large-diameter portion on the upper side that closely slides with the operating stem described later. It has a stop valve part that closes the through hole, and the lower end of the operating stem connected to the spray button slides closely against the large diameter part of the cylindrical valve,
The cylindrical valve has a side hole in the small diameter part, and the periphery of the side hole that closes the side hole is thin, so that when the cylindrical valve moves up and down, it comes into contact with the inner wall of a part of the large diameter cylinder of the housing. A sliding annular elastic body is fitted, and the housing has a tapered part between a large diameter cylinder part and a small diameter cylinder part, and the small diameter cylinder part is in the uppermost position when the cylindrical valve is in the uppermost position. However, it has a side hole at a position higher than its lower end packet, and at least one groove is provided in a part of its tapered part, and a part of the large diameter cylinder of the housing and the said operating stem or sliding cylindrical There is a clearance between the large diameter part of the valve, and the operating stem and the upper end of the housing are in airtight contact when the cylindrical valve is at its highest position, and when the cylindrical valve is pushed down to its lowest position. When the annular elastic body is bent, a passage is created from the inside of the cylinder to the inside of the container, and at the same time, a passage is formed inside and outside the container by the clearance and the groove, and the small-diameter cylinder of the housing A check valve is formed inside the part, the lower end of which is a hollow valve stem with a side hole, and has a thin elastomer ring attached to the side hole, and for a part of the small diameter cylinder. A spray comprising a coil spring that accommodates a rod-shaped member having a sliding upward packet and surrounds the rod-shaped member, the coil spring being suspended so as to pull the rod-shaped member and the cylindrical valve apart. Equipment is provided.

Preferred embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a cross-sectional view of a preferred embodiment of the device of the present invention in a rest state.

The valve body also serves as a cap that is fixed to the container of the entire device.
1; The valve body connects the container 2 through the gasket 8.
It is fixed at 0, and the upper part is the large diameter cylinder 2g (2
(e is a flange for fixing) Below is part 2 of the small diameter cylinder
h, and there is a tapered part 2b between them, and a housing 2 having a side hole 2a at the upper part of a small diameter cylinder: a sliding cylindrical valve 4 having an upper sliding piston 4a and a lower packet 4b; It has a side hole 4c, and a stop valve part 4d and a passage 4 are provided at the center of the upper end to close the through hole of the actuating stem described later.
e: an operating stem 3 connected to the spray button 10, whose lower end forms a downward cup-shaped portion 3a, allowing the upper large-diameter sliding piston portion 4a of the cylindrical valve to slide closely against the inner surface. The receiver is inserted into the cylindrical valve; the periphery of the cylindrical valve fitted to close the side hole 4c is thin, and when the cylindrical valve moves up and down, it slides into contact with the inner wall of a part of the large diameter cylinder of the housing. an annular elastic body 13 that is housed in the small-diameter cylinder part 2h of the housing to push up the cylindrical valve and push down the rod-shaped member 5 described later; Ring 12;
A thin elastomer annular ring 7 whose lower end becomes a hollow valve stem with a side hole, which is pushed down by a coil spring 6 inserted into a part of a small diameter cylinder and a sliding cylindrical valve, is attached to the side hole. It consists of a rod-shaped member 5 having an upward packet valve 5C which constitutes a check valve and which slides against the small diameter cylinder part 2h. A groove 2k is cut.

Member 11 is a suction pipe. Actuation stem 3 of housing 2
The portion that accommodates the downward cup-shaped portion 3a is configured to constitute a part of the large-diameter cylinder portion 2g of the housing 2, but this portion may also be configured as a part of the valve body. Similarly to the large diameter cylinder 2g, there is a clearance between the downward cup-shaped portion 3a of the operating stem.

The upper end of the valve body 1 becomes the inverted part 1a and the operating stem 3
A seal is achieved when the actuation stem is in the uppermost position by an O-ring 12 held at the base of the actuator.

This prevents the contents from spilling even if it falls over.

However, there is a clearance between the actuating stem 3 and the inverted portion 1a of the valve body.

Further, the sealing means is not limited to an O-ring.

The sliding cylindrical valve 4 may be integrally formed, but for convenience in manufacturing and assembly, it may be divided into upper and lower parts and may be combined.

The shape of the valve body is also not limited to that shown in the drawings.

A known atomizing button is coupled to the actuation stem, for example fitted with a so-called mechanical break-up spout 14, which is well known in the art and will not be described in detail.

As seen in FIG. 1, the periphery of the annular elastic body 13 is in contact with the inner surface of the large diameter cylinder part 2g of the housing, so that the operating stem 3 and the valve body, the downward cup-shaped portion of the operating stem and the housing. There is a clearance between some of the large diameter cylinders, so the operating stem 3 is lowered slightly and the upper O
- Even when the sealing by the ring 12 is released, the inflow path for air from the outside to compensate for the decrease in the content liquid is closed.

Therefore, even when the spray device is operated in an inverted state, the liquid content will not leak out.

. However, when the operating stem continues to be operated, if the contents are pumped out without the inflow of compensating air, the internal pressure will be reduced and the evacuation will become increasingly difficult.

To solve this problem, the device of the present invention is provided with a groove 2k on the inner surface of the tapered portion 2b of the housing, as will be explained below.

In such a configuration, when the actuation stem 3 (integrated with the spray button 10) and therefore the sliding cylindrical valve 4 are pushed down, the large-diameter sliding piston portion 4a of the cylindrical valve is moved to the lower end of the large-diameter cylinder portion 2g of the housing. When the annular elastic body 13 is bent by the tapered portion 2b and opens the side hole 4d of the cylindrical valve, a passage from the housing cylinder to the inside of the container is opened through the side hole 2a of the housing. At the same time, the channel outside the container is also opened by the groove 2k, thus allowing the inflow of compensation air.

This situation is shown in FIG.

In the device of the present invention, a rod-shaped member 5 having a small-diameter cylinder portion 2h, a packet valve 5C whose lower end faces upward, and a check valve 7 in a sliding cylindrical valve 4 is pushed downward by a coil spring surrounding it. It is stored in.

FIG. 3 is an enlarged cross-sectional view of the lower end portion of the rod-shaped member 5.

In the illustrated embodiment, there is an enlarged portion 5a at the lower end of the rod-like member, and an elastomer packet 5c is fitted under the enlarged portion 5a.

This packet is always in contact with the inner wall of the small diameter cylinder section and has no valve action.

An elastomer ring 7 is attached so as to cover the enlarged portion 5a and close the side hole 5d of the hollow valve stem 5d.

This is the so-called, used for bicycle tubes.
``Although it is essentially the same as the rod-shaped body, in the preferred embodiment shown, the ring band 7 has a flange 7a that fits into the stepped part of the enlarged part 5a of the rod-shaped body, and this flange part 7a has a spring 6.
is being held down.

The annulus 7 thus acts as a check valve, so that when the sliding cylindrical valve moves up and down, it returns fluid only upwards rather than below.

As the stem is raised and lowered several times, the air that was in the cylinder of the housing is expelled and replaced by the liquid to be atomized.

Liquid enters the space between the large diameter cylindrical cup 4a and the actuating stem 3 from the cylinder through the flow path 4e of the cylindrical valve.

When this happens, the principle of a water pressure device operates and the sliding cylindrical valve 4 is lowered relative to the operating stem 3, thus opening the stop valve 4d and causing liquid spray to occur.

(The principle of a water pressure vessel also works for gases in terms of transportation, but it is not reliable.

This principle is explained in detail in Japanese Patent Publication No. 51-11802.

) Since the manual sprayer of the present invention has a rod-shaped member with a packet valve, it can be used more accurately than a ball valve even when used in an inverted state with an adapter as disclosed in Japanese Patent Publication No. 47-3785N. Since the end position when the actuating stem is pressed down is determined by the upper end of the rod-like member, the elastic annular member 13 is not unnecessarily compressed and the chance of damage to it is reduced.

In the present invention, as described above, the sliding piston part 4a at the upper part of the sliding cylindrical valve 5 is received in the downward cup-shaped part of the operating stem 3.
5043 and shown in FIG. 4 of the present application, the lower part of the operating stem 3 may be a sliding piston, and the receiving member may be configured to be inserted into the upper part of the sliding cylindrical valve.

The present invention encompasses both.

In FIG. 4, reference numbers are the same as in FIG.

Other parts of the present invention than those described above, such as the attachment of the valve body to the container, the suction pipe, etc., belong to known matters and will not be described in detail.

Furthermore, since the device of the present invention can be easily manufactured by those skilled in the art using known techniques and materials, there is no need to discuss these points in detail.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a preferred embodiment of the device of the present invention in a rest state. FIG. 2 is an enlarged partial cross-sectional view of the device shown in FIG. 1 with the actuating stem in a depressed position; FIG. 3 is an enlarged partial cross-sectional view of the lower part of the rod-like member of the apparatus shown in FIGS. 1 and 2. FIG. FIG. 4 shows another embodiment of the sliding cylindrical valve. In these figures, 4: sliding cylindrical valve, 2: housing, 2g part of two large diameter cylinders, 2h: part of small diameter cylinder,
2: groove, 3: operating stem, 13: annular elastic body, 5: rod-shaped member, 5c: upward packet valve, 7: ring band.

Claims (1)

[Scope of utility model registration request] A part of the upper large-diameter cylinder and a part of the lower small-diameter cylinder are installed in the housing in the middle of the passage from the suction pipe to the spray nozzle, and a pressurized chamber containing a sliding cylindrical valve spans both cylinders. In a manual spray device having a structure in which when the contents of the pressurized chamber are compressed by pressing down the spray button, the cylindrical valve is further pressed down and the stop valve at the top of the cylindrical valve is released: The lower end forms a downward packet and slides closely against a part of the small diameter cylinder of the housing, while the upper end becomes a large diameter part and slides closely against the operating stem described below.
and a stop valve portion that closes the through hole of the operating stem; the lower end of the operating stem connected to the spray button slides closely against the large diameter portion of the cylindrical valve, and the cylindrical valve has a small diameter portion. The side hole has a side hole, and the side hole has a thin annular elastic body that closes the side hole and slides into contact with the inner wall of a part of the large diameter cylinder of the housing when the cylindrical valve moves up and down. The housing has a tapered part between the large diameter cylinder part and the small diameter cylinder part, and the small diameter cylinder part is located higher than its lower end packet even when the cylindrical valve is in the uppermost position. has a side hole, and at least one groove is provided in a portion of the tapered portion thereof, and the large diameter cylinder portion of the housing and the aforementioned operating stem or the large diameter portion of the sliding cylindrical valve are connected to each other. There is a clearance between them, and the operating stem and the upper end of the housing are in airtight contact when the cylindrical valve is at the highest position, and when the cylindrical valve is pushed down to the lowest position, the annular elastic body is bent to create a passage from the inside of the cylinder to the inside of the container, and at the same time a passage is formed inside and outside the container by the clearance and the groove. The lower end forms a hollow valve stem with a side hole, and comprises a check valve having a thin elastomer annulus attached to the side hole, and an upwardly directed valve that slides against a portion of the small diameter cylinder. What is claimed is: 1. A spray device comprising: a coil spring that houses a rod-like member provided with a packet and surrounds the rod-like member, and is suspended so as to pull the rod-like member and a cylindrical valve apart.