JPS6024448Y2 - manual spray device - Google Patents

Description

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

Furthermore, Utility Model Application No. 52-06629ψ discloses 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 starts spraying to overcome the above-mentioned inadequacies. 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 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 an upper portion with a large diameter portion that slides closely with the operating stem described below, 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 touches the inner wall of a part of the large diameter cylinder of the housing. An annular elastic body that slides in contact is fitted, and the housing has a tapered part between a large diameter cylinder part and a small diameter cylinder part, and the cylindrical valve is in the uppermost position of the small diameter cylinder part. Even in cases where the side hole is located higher than the lower end of the packet, at least one groove is provided in a portion of the tapered portion thereof, and a portion of the large diameter cylinder of the housing and the aforementioned operating stem or sliding tube are provided. There is a clearance between the large diameter part of the cylindrical 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 at its lowest position. When pressed down, 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, and the small diameter cylinder of the housing A rod-shaped member whose lower end is pushed downward by a spring suspended between the lower end of the sliding cylindrical valve and serves as a check valve to prevent the flow of fluid from top to bottom is housed inside a part of the valve. The rod-like member has a bead (string-like protrusion) on its upper part, and the sliding cylindrical valve has a bead (string-like protrusion) on its lower inner surface, and slides on the upper part of the rod-like member. A spray device is provided, characterized in that when the spray device is fitted into a cylindrical valve, the beads are engaged with each other so that the beads do not separate from each other.

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.
Fixed at 0, the upper part is the large diameter cylinder 2g,! - (2e is a flange for fixing) The lower part is a small diameter cylinder part 2h, the space between is a tapered part 2b, and the upper part of the small diameter cylinder has a side hole 2a.Housing 2: Upper sliding piston 4a and lower part A sliding cylindrical valve 4 having a packet 4b, having a side hole 4c above it, and having a stop valve part 4d and a passage 4e in the center of the upper end for closing the through hole of the actuating stem described later; a spray button 10, the lower end of which forms a downward cup-shaped portion 3a and receives the upper large-diameter sliding piston portion 4a of the cylindrical valve so as to be able to closely slide on the inner surface; An annular elastic body 13 that is fitted to close the side hole 4c of the cylindrical valve and whose periphery is thin and slides in contact with the inner wall of a part of the large diameter cylinder of the housing when the cylindrical valve moves up and down; A spring 6 which is housed in the small diameter cylinder part 2h and pushes up the cylindrical valve and pushes down the rod-shaped member 5 described later; O-ring 1 for airtightly fitting the upper end of the valve body 1 and the operating stem.
2; Consists of a rod-like member 5 having an upward packet valve 5c that slides against a lower end small-diameter cylinder part 2h pushed down by a coil spring 6 inserted into a small-diameter cylinder part and a sliding cylindrical valve. At least one groove 2k is cut inside the tapered portion 2b of the housing 2.

Member 11 is a suction pipe.

The portion of the housing 2 that accommodates the downward cup-shaped portion 3a of the operating stem 3 is configured to constitute a part of the large diameter cylinder portion 2g of the housing 2, and this portion is configured as a part of the valve body. Also, there is a clearance between the large-diameter cylinder 2g and 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 actuating stem is in the uppermost position by an O-ring 12 held at the base of the actuating stem.

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 sectional view showing the lower end portion of the rod-shaped member 5 in this embodiment.

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 a portion of the small diameter cylinder 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 1 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 is held down by a spring 6. .

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 downwards.

In the spray device of the present invention, a bead (string-like protrusion) 5g is provided on the upper part of the rod-shaped member 5, and a bead (string-like protrusion) 4g is also provided on the lower inner surface of the sliding cylindrical valve. It is configured such that it must be fitted when the member is inserted into the sliding cylindrical valve.

The situation is shown separately in FIG. Once inserted, the rod-like member resists the force of the spring 6 and does not come off.

The advantage of this configuration is that the assembly shown in FIG. 4 can be handled as one, making assembly work much easier.

In the preferred embodiment described above, the check valve at the lower part of the rod-shaped member is constituted by the ring band 7, but this check valve may also be constituted by a packet valve 5c as shown in FIG. good.

In this figure, the lower part of the rod-shaped member is an enlarged flange portion 5a.
The spring 6 is supported on the upper part, and the packet 5C is attached to the lower part.

Packet valves are made of soft material and deflate to allow fluid to flow from top to bottom.

Furthermore, this check valve may be a ball valve configured separately from the rod-shaped member.

The present invention includes any of these.

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, for example, Japanese Patent Publication No. 47-3785 ()! It operates more accurately than a ball valve even when used in an inverted state with the adapter disclosed in The annular member 13 is not unnecessarily compressed and the chances of damage to it are 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. 6 of the present application, the lower part of the operating stem 3 may be a sliding piston, and the valve may be configured to be received in the upper part of the sliding cylindrical valve.

The present invention encompasses both.

In FIG. 6, 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 the fitted state of the sliding cylindrical valve and the rod-shaped member. FIG. 5 shows another embodiment of the valve section below the bar member. FIG. 6 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, keratovalve, 7: ring band. 5C: Upward bar

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, the dual-cylindrical valve has 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 on the upper part of the cylindrical valve is released. A small diameter portion whose lower end is a downward facing packet and slides closely against a part of the small diameter cylinder of the housing, and a stop valve portion whose upper end is large in diameter and closely slides with the operating stem described below, and which 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 part of the cylindrical valve, the cylindrical valve has a side hole in the small diameter part; The periphery of the side hole is thin, and when the cylindrical valve moves up and down, an annular elastic body is fitted that slides into contact with the inner wall of a part of the large diameter cylinder of the housing. There is a tapered part between the part and the small diameter cylinder part, and the small diameter cylinder part is
Even when the cylindrical valve is in the uppermost position, it has a side hole at a higher position than the lower end packet, and at least one groove is provided in a part of the tapered part, and the part of the large diameter cylinder of the housing and There is a clearance between the operating stem or the large diameter portion of the sliding cylindrical 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. , 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. Inside a part of the small diameter cylinder of the housing,
A rod-shaped member whose lower end serves as a check valve that blocks the flow of fluid from top to bottom, which is pushed downward by a spring suspended between the lower end of the sliding cylindrical valve, is housed in the rod-shaped member. The member has a bead (string-like protrusion) on its upper part, the sliding cylindrical valve has a bead (string-like protrusion) on its lower inner surface, and the upper part of the rod-like member is inserted into the sliding cylindrical valve. When inserted into the
A spray device characterized in that the beads are configured so that they do not separate due to their engagement.