Dispensing adaptor for one-component polyurethane foam

Abstract

A dispensing adaptor for one-component polyurethane foam, which is coupled to a valve stem of a polyurethane pressurized container, the dispensing adaptor including: a tubular main adaptor body coupled to the valve stem and introducing polyurethane foam out of the pressurized container; a stem coupling portion formed at one end portion of the adaptor main body and coupled to and communicating with the valve stem; a discharging pipe extended from the other end portion of the adaptor main body; a stationary lever formed integrally with and extended from an outer wall of the adaptor main body; and an extended lever curvedly extended from the stationary lever along a lengthwise direction of the pressurized container, and making the valve stem be inclined to open with respect to an axial direction.

Claims

1. A dispensing adaptor for dispensing a fluid component retained in a pressurized container, the pressurized container having a valve stem through which the fluid component is to be discharged, wherein the dispensing adaptor comprises: an adaptor main body having a stem coupling portion at a first end portion of the adaptor main body for coupling to the valve stem of the pressurized container, and a discharge pipe at a second end portion of the adaptor main body, the adaptor main body having an inner passageway in fluid communication with the valve stem for discharging the fluid component through the inner passageway; a main lever formed integrally with and extending laterally outwardly to a first lateral side and a second lateral side from an outer wall of the adaptor main body, the main lever having a hinge projection at an upper portion of the first lateral side and a support projection at a lower portion of the first lateral side; and an extended lever coupled to the main lever, the extended lever having a first end and a second end opposite to the first end, the extended lever extending along a lengthwise downward direction of the pressurized container when coupled to the main lever for dispensing operation, the extended lever having a hinge projection at an upper portion of the first end of the extended lever and an accommodating groove at a lower portion of the first end of the extended lever, wherein the hinge projection of the main lever is pivotally coupled to the hinge projection of the extended lever by a hinge, and wherein the support projection of the main lever is inserted in and coupled to the accommodating groove of the extended lever for the dispensing operation, while allowing the support projection to be disengaged from the accommodating groove when the extended lever is pivotally moved by user about the hinge in a direction away from the pressurized container.

2. The dispensing adaptor according to claim 1, wherein the extended lever has a blocking projection at the second end of the extended lever, and the blocking projection is configured to be inserted to a free end of an outlet pipe coupled to the discharging pipe to block an external air from introducing into the discharge pipe, when the extended lever is rotated about the hinge of the main lever and the extended lever and causes the support projection of the main lever being detached from the accommodating groove of the extended lever.

3. The dispensing adaptor according to claim 2, wherein the outlet pipe coupled to the discharge pipe is bendable to facilitate insertion of the blocking projection of the extended lever to the free end of the outlet pipe.

4. The dispensing adaptor according to claim 2, further comprising a peg at the second lateral side of the main lever, the peg being configured to be detachably attached to a mounting adaptor of the pressurized container to facilitate carriage of the dispensing adaptor while being coupled with the pressurized container.

5. The dispensing adaptor according to claim 1, wherein the hinge is a film hinge.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a schematic view of a conventional disposable dispensing adaptor,

(2) FIG. 2 shows a disposable dispensing adaptor according to an embodiment of the present invention when it is used,

(3) FIG. 3 shows the disposable dispensing adaptor when it is not in use,

(4) FIG. 4 shows the dispensing adaptor when it is kept before use,

(5) FIG. 5 is a front view of a disposable dispensing adaptor according to another embodiment of the present invention, and

(6) FIG. 6 is a front view of a disposable dispensing adaptor according to still another embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

(7) Below, embodiments of the present invention will be described in detail with reference to accompanying drawings.

(8) As shown in FIG. 2, a disposable dispensing adaptor includes an adaptor main body 100 coupled to a valve stem VS formed at a top end portion of a pressurized container PC, a stem coupling portion 120 formed at one end portion of the adaptor main body 100 and coupled to and communicate with the valve stem VS, a discharging pipe 130 extended from the other end portion of the adaptor main body 100 and dispensing polyurethane, a stationary lever 140 formed integrally with an outer wall of the adaptor main body 100 and extended in a direction transverse to an axial direction of the pressurized container PC, and an extended lever 150 curvedly extended from the stationary lever 140 along a lengthwise direction of the pressurized container PC in order to make the valve stem VS be inclined.

(9) FIG. 2 shows that the adaptor main body 100 is coupled to the valve stem VS of the pressurized container PC so as to use the disposable dispensing adaptor. As shown therein, the extended lever 150 coupled to the stationary lever 140 is curved downwardly at dispensing works. At this time, a support projection 142 protruding from the stationary lever 140 is inserted in and coupled to a projection accommodator 154 recessed in the extended lever 150. The stationary lever 140 and the extended lever 150 are relatively strongly coupled by coupling between the support projection 142 and the projection accommodator 154.

(10) During the dispensing works, a worker makes the pressurized container PC upside down so that the valve stem VS can face downward, and pulls the extended lever 150 toward the pressurized container PC in the state that the stationary lever 140 and the extended lever 150 are strongly coupled to each other. The action of the worker is transferred to the stationary level 140 through the extended lever 150, and thus the valve stem VS is inclined with respect to the pressurized container PC. If the valve stem VS is inclined, a lower end portion of the valve stem VS is open so that liquid polyurethane pressurized by gas can come out through a hollow of the valve stem VS. The coming-out polyurethane passes through the stem coupling portion 120 coupled to and communicating with the valve stem VS, the adaptor main body 100, the discharging pipe 130 and the outlet pipe 132 in sequence, and is then disposed to a target portion.

(11) The stationary lever 140 and the extended lever 150 are connected by a film hinge 144 as they are molded as a single body, so that the extended lever 150 can rotate with respect to the film hinge 144. Alternatively, the film hinge 144 may be substituted with a hinge pin or the like hinge.

(12) FIG. 3 shows the disposable dispensing adaptor when it is not in use. At an end portion of the extended lever 150 is provided a blocking projection 152 that can be inserted in a free end portion of the outlet pipe 132. While the disposable dispensing adaptor is not in use, the extended lever 150 can rotate toward the outlet pipe 132 with respect to the film hinge 144. In this state, the outlet pipe 132 is bent so that the blocking projection can be fitted to the end portion of the outlet pipe 132, thereby blocking up the outlet pipe 132. Therefore, external air is prevented from flowing into the outlet pipe 132, and the residual polyurethane in the outlet pipe 132 is thus prevented from contacting air. Consequently, the polyurethane remaining in the outlet pipe 132 is not hardened even while the dispensing work is suspended. The formation and size of the blocking projection 152 are determined in consideration of the inner diameter and material of the outlet pipe 132 so that insertion of the outlet pipe 132 and blocking-off of air can be properly performed.

(13) The adaptor main body 100 includes a peg 160 formed integrally with and extended from the outer wall of the adaptor main body 100 so that the adaptor main body 100 can be detachably mounted to a standby mounting portion 161. As shown in FIG. 4, the adaptor main body 100 is mounted to the pressurized container PC by the peg 160 so as to be easily kept or carried together with the pressurized container PC. Alternatively, the peg 160 may be formed in the stationary lever 140.

(14) FIG. 5 shows another embodiment of the present invention, in which an extended lever 150 is separated from the stationary lever 140 and coupled to the stationary lever 140 as necessary. As shown therein, an end portion of the stationary lever 140 has an insertion hole 146 to receive an end portion of the detachable extended lever 150. Therefore, the detachable extended lever 150 is separated from the insertion hole 146 when the pressurized container PC is packaged, carried or kept, and is inserted in and coupled to the insertion hole 146 at the dispensing works. Further, the detachable extended lever 150 may be manufactured to have a tubular shape by taking reduction of manufacturing costs, easiness of detachability, a feeling of grip, etc. into account.

(15) FIG. 6 shows still another embodiment of a detachable extended lever 150. The extended lever 150 of FIG. 6 is manufactured to have a tubular shape, and detachably coupled to the stationary lever 140 as a coupling projection 146 provided in the stationary lever 140 is inserted in the extended lever 150.

(16) According to the present invention, the extended lever 150, 150 or 150 coupled to the stationary lever 140 allows a worker to hold the pressurized container PC and the extended lever 150, 150 or 150 with one hand, thereby improving work efficiency and safety. Further, the blocking projection 152 of the extended lever 150, 150 or 150 is used for temporarily blocking up the end portion of the outlet pipe when the disposable dispensing adaptor is not in use, so that the disposable dispensing adaptor can be used again.