JPH05133322A - Trigger type pump actuator - Google Patents

Abstract

PURPOSE: To obtain a trigger type pump operating device that has excellent durability and can be assembled in a simple way irrelative to the shape and structure of any container to be used. CONSTITUTION: A trigger type pump operating device has a transfer head 23. The transfer head 23 is axially movable together with a piston 7. The transfer head 23 also has a transfer conduit 22 which is arranged at an angle with respect to a displacement axis X-X of the piston 7. The transfer conduit is positioned on the same surface as the surface formed by the rotation of a trigger lever 32. The trigger type pump operating device has a swing lever 30. The swing lever 30 converts the rotation of the trigger lever 32 to axial displacement corresponding to the transfer head 23, and drives the pump piston 7 against an urging spring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trigger type pump actuation device for actuating an axial displacement piston type pump against an urging spring to spray liquid from a hand-held container. The pump has a spray transfer head which is axially movable with a piston, the spray transfer head comprises a transfer conduit, the transfer conduit comprising a trigger Extends at an angle to the piston displacement line that is substantially in the same plane in which the lever rotation occurs.
The trigger pump actuating device described above has a base body for supporting the pump and the trigger lever, and the base body is adapted to be connected to the open end of the container.

[0002]

BACKGROUND OF THE INVENTION The trigger devices described above have long been known in the art and instead of using a gas propellant loaded in a container with the liquid to be atomized, a trigger lever for the pump is used. Is currently used to atomize liquids at pressures created by the mechanical action of. However, such known devices have not received wide acceptance. The reason is beneficial from the point of view of environmental pollution, but the mechanical parts are apt to wear rapidly due to repeated stress due to their structure, and the manufacturing of this kind of equipment This is because the materials used for those mechanical parts are generally low in order to satisfy the requirements for disposable (disposable) that are usually considered when performing.

Further, with the structure of the conventional pump operating device, the components of the pump operating device cannot be automatically assembled, and the automatic assembly cannot be performed inexpensively and easily. Finally, a non-negligible drawback of conventional pump actuators is that the components of the pump actuator are designed to assemble pump actuators suitable only for special types of vessels, i.e., those components are narrow. It is designed to assemble pump actuators suitable for a range of vessel designs and has a very narrow range of applications.

Known pump actuators of the type described above include:
For example, it is illustrated in US Pat. No. 3,478,935. As clarified there, the trigger type lever or handle of the pump operating device is integrated with the conversion lever, which converts the rotation of the trigger type lever into the axial linear displacement of the pump piston. And is of considerable length, and the conversion lever is pivotally attached to the basic body at a significant distance from the trigger lever or handle.

In use, the combination of the lever and the trigger handle is subject to a large flexural stress and therefore a high quality is required, so an expensive material is used to prolong the working life of the pump actuator. There is a need. Furthermore,
Due to the complexity of the components, the pump actuators disclosed in the above-mentioned U.S. patents are not suitable for automatic assembly in a simple operation, e.g. for automatic assembly in one and the same direction. Is not suitable.

Another example of a known device is disclosed in French Patent Publication No. 2,398,196, which device has the same drawbacks as the device disclosed in US Pat. No. 3,478,935. In addition, the above-mentioned French Patent Publication No. 2,39
As is particularly clear from the example disclosed in 8,196,
The components of the device are not designed to match the particular shape of the container and are not able to provide a structurally independent device that can match a variety of differently shaped containers.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a trigger pump actuation device for actuating an axial displacement piston type pump against an urging spring to spray liquid from a hand-held container. The operating device is not structurally related to the shape of any container intended to be used and is very reliable in terms of durability, which makes the operating device a refillable container. They can be used together, so that the actuating device is cost-effective and is manufactured in a simple, economical and automatable assembly method.

[0008]

[Means for Solving the Problems] According to the present invention, the above-mentioned object is to operate a trigger-type pump for spraying a liquid from a hand-held container by operating an axial displacement piston-type pump against an urging spring. A device comprising a spray transfer head, which is axially movable with a piston and has a transfer conduit, the transfer conduit pivoting a trigger lever. Extending at an angle to the displacement line of the piston in substantially the same plane in which the triggering occurs, and the trigger pump actuator further includes a base for supporting the pump and the trigger lever. A trigger pump actuating device adapted to be connected to the mouth end of the container, the swing lever having a swing lever at one end thereof. A lever which is pivotally attached to the base body with its opposite end engaged with the transfer head, wherein the rocking lever directs rotation of the trigger lever into corresponding axial movement of the head. Achieved by a triggering pump actuator characterized in that it is converting. [0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the drawings, and in particular to FIGS. 1 and 7, generally designated by reference numeral 1 is a substrate, which substrate 1 has a tubular section 2 and an enlarged section. And an axially extending portion 3 having a diameter, on which an annular inner ledge 4 is formed. The ledges 4 are adapted to mate with each other to accommodate a cap 5, which is integral with a cylindrical body 6 of an axial pump known per se. Inside the cylindrical body 6, a piston 7 movable in the axial direction is housed, and the piston 7 is a spring 9,
It is adapted to be driven by the cylindrical rod 8 via the cylindrical body 10 and another coil spring 11.

As is conventional, the liquid to be sprayed is drawn from the container 12 (FIG. 2) into the chamber 13 of the cylindrical body 6 via a port 14 under the control of a ball valve 15. The transfer of the atomized liquid in the form of a spray is carried out by the compression of the chamber 13 by the piston 7, which is displaced axially by the cylindrical rod 8. When the magnitude of the compression force exceeds the set value of the spring 9, relative displacement occurs between the piston 7 and the cylindrical rod 8. The pressurized liquid is introduced into the space 16, enters the space 17 in the axial direction of the cylindrical rod 8 from the space 16, and the space 17 is formed as described later.
To the transfer conduit 22.

Referring again to FIG. 1, it should be noted that the inner wall 18 of the tubular extension 3 is provided with a thread to be screwed into the neck of the container 12. The tube portion 2 has a pair of side walls or walls 19 and 20, and the pair of walls 1
9 and 20 extend transversely parallel to each other and define a gap or space 21 therebetween.

Between the walls 19 and 20 there is housed a transfer conduit 22 which constitutes the transfer head 23 of the trigger pump actuating device, which transfer head 23 is a tubular part 2 of the basic body 1.
It is located inside. The head 23 is mechanically and hydraulically connected to the tubular rod 8, and the head 23 is axially driven together with the tubular head 8 during operation of the pump.

The longitudinal axis is the longitudinal axis X- of the substrate 1.
A conduit 22 extending at an angle to X, in particular at a right angle, terminates in a spray nozzle 24.
Grooves 25 and 26 are formed on the surfaces of the walls 19 and 20 outside the space 21, respectively, and these grooves 25 and 26 are open at the edges 19a and 20a and have a circular cross section. Ends at 27 and 28, the grooves 25 and 26 being joined to the inlets of the recesses 27 and 28 via the respective bevels 25a and 26a.

Although the depth of the grooves 25 and 26 is preferably less than the depth of the respective recesses 27 and 28, the width of the grooves 25 and 26 is substantially equal to the diameter of the recesses 27 and 28. In the preferred embodiment, the aforementioned recesses 27 and 28 are in the form of holes through the walls 19 and 20. As will be described in more detail later, adjacent pairs of grooves 25, 26 and recesses 27, 28 are
The cylindrical trunnion 29 of the swing lever 30 and the cylindrical trunnion 31 of the trigger lever 32 are permanently accommodated by snap fitting (fitting called snapping).

The cylindrical trunnions 29 are formed in parallel arms 33 of the lever 30, which arms 33 are designed to surround the walls 19 and 20 from the outside with respect to the space 21, which trunnions 29 are assembled. After moving along the groove 25 in steps, it snaps into the corresponding recess 27, thus providing a pivot axis for the rocker lever 30. Cylindrical trunnions 31 are formed on ears 34 and 35, respectively, which are integral with the trigger lever 32. These cylindrical trunnions 31 snap into corresponding recesses 28 after movement along the groove 26 during assembly.
Respectively to provide the pivot axis of the trigger lever 32 that occurs when actuated by the user.

One ends of the arms 33 are joined together by a bridge 36, which bridge 36 is part 3 of it.
At 7, the ribs 38 of the transfer head 23 are simply mounted. The other end 39 of the arm 33 is the trigger lever 32.
It is adapted to be in surface engagement with a cam acting surface 40 provided on the ears 34 and 35. Further, the tubular portion 2 of the base body 1 is provided with an annular gap 41, and the gap 41 has a collar 4
2 are fitted together, and the collar 42 is firmly held by the supporting ribs 43 provided on the inner surface of the cap 44, and the outer shape of the cap 44 is
It is a copy of the shape of the container 12 in which the trigger type pump operating device is engaged and operated.

A slot 45 is provided in front of the cap 44, and the slot 45 is located in front of the transfer orifice, that is, the spray nozzle 24 when the assembling operation is completed, and the spray body has the slot 45. To get through. At the position of the slot 45, a prying prevention tab 46 (FIG. 2) integrated with the trigger lever 32 is carried, and the prying prevention tab 46 is automatically set when the trigger type pump operating device is first used. It is supposed to be destroyed.

As is apparent from FIGS. 3, 4, 5, and 6, the device according to the invention comprises an axis X-- of the substrate 1.
Rather than assemble laterally with respect to X, its base 1
Can be assembled in an assembling process in which one is carried out in a direction parallel to the axis XX of the substrate and the other is carried out in the other direction, such that it is assembled transversely to the axis XX of the substrate 1. It requires complex and expensive automation equipment.

As can be seen from FIG. 3, in fact, the pump assembly is introduced into the tubular housing 3 in an upward axial movement in the direction indicated by arrow F1. The assembly consisting of the moving head 23 and its transfer conduit 22 is axially downwards along the direction indicated by arrow F2 until the head 23 is engaged with the tubular drive rod 8 of the pump. It is introduced into the cylindrical housing, that is, the cylindrical portion 2 by movement (Fig. 4). Then, as can be seen from FIG. 5, sliding the trunnions 31 along the groove 26 and snap-fitting the trunnions 31 into the recesses 28 makes them parallel to the direction indicated by arrow F2 and The trigger type lever 32 is assembled by axial movement performed along a direction indicated by an arrow F3 parallel to the axis XX. Similarly,
The movement performed along the direction indicated by arrow F4 causes the trunnions 29 to slide into the groove 25, and then the trunnions 29 are snap-fitted into the recesses 27, respectively. Assemble into

As a result, the rocking lever 30 has its end portion 37 placed directly on the rib 38 of the head 23 and its end portion 39 placed directly on the cam action surface 40 of the ears 34 and 35. It will be stopped. Trigger lever 32 has axis X
By rotating along the -X direction, the swing lever 3
The end portion 39 of 0 is lifted, and the end portion 37 of the rocking lever 30 is
Makes a downward movement. Due to the downward movement of its end 37,
The head 23 is provided with a corresponding axial movement, and thus the tubular rod 8 which drives the pump piston, is provided with its corresponding axial movement.

Thus, the movement is transmitted through the compact structural element and the movement is limited to the longitudinal direction, which greatly improves the flexural strength. As you can see,
With the trigger pump actuating device according to the invention, without any screwing or lateral insertion movement of the pin,
By carrying out the assembly method, a pivot or pivot axis is created.

The attachment of the cap 44 also provides a unit that can be independently handled and associated with the container 12 regardless of the design or shape of the container 12. Therefore, the structure of the trigger type pump actuating device according to the present invention is independent of the container in which the trigger type pump actuating device is mounted, and thus has an important economic advantage that the present invention container can be mass-produced. Be done. As will be appreciated, the dimensions and materials of the individual members or elements may be arbitrary without departing from the scope of the invention described above and set forth in the claims.

[0023]

The trigger pump actuating device of the present invention is structurally unrelated to the shape of any container intended to be used and is very reliable in terms of durability, thereby making its actuation possible. The device can be used with a refill container. The actuating device is therefore cost-effective and can be manufactured with a simple and economical assembly method that can be automated.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing components constituting a trigger type pump operating device according to an embodiment of the present invention.

FIG. 2 is a perspective view of the trigger type pump operating device shown in FIG. 1, showing the assembled state.

FIG. 3 is a side view showing a state where the pump assembly in the trigger type pump actuating device according to the embodiment of the present invention is introduced into the cylindrical housing 3.

FIG. 4 is a side view showing a state in which the moving head 23 and the transfer conduit 22 are introduced into the tubular portion 2 in the trigger type pump operating device according to the embodiment of the present invention.

FIG. 5 is a side view showing a state in which the trigger type lever 32 is assembled in the trigger type pump actuating device according to the embodiment of the present invention.

FIG. 6 is a side view showing a state where the swing lever 30 is finally assembled in the trigger type pump actuating device according to the embodiment of the present invention.

FIG. 7 is a cross-sectional view of an axial piston pump operated by a trigger type pump actuator according to an embodiment of the present invention.

[Explanation of symbols]

 1 Base 2 Cylindrical part 19 Side wall 20 Side wall 21 Gap 22 Transfer conduit 23 Transfer head 27 Counter means 30 Swing lever 32 Trigger lever 33 Arm 36 Bridge part 37 Side end 39 Other end 45 Groove hole

Claims (11)

[Claims] 1. A trigger type pump operating device for spraying liquid from a hand-held container by operating an axial displacement piston type pump against an urging spring, and having a spray body transfer head. The atomizer transfer head is axially movable with the piston and has a transfer conduit which displaces the piston in substantially the same plane in which the pivoting of the trigger lever occurs. Extending at an angle to a line, the trigger pump actuator further comprises a base for supporting the pump and the trigger lever, the base being connected to the mouth end of the container. A trigger-type pump actuation device adapted to have a swing lever (30), one end (39) of which engages the trigger lever (32),
The opposite end portion (37) is pivotally attached to the base body (1) in a state of being engaged with the transfer head (23), and the swing lever (30) rotates the trigger lever of the head. A trigger type pump actuating device, characterized in that it is converted into a corresponding axial movement. 2. The base (1) comprises a tubular portion (2) containing the head (23) of the pump therein, and a pair of side walls (19, 20) arranged in parallel with each other. A gap (2) defined between the pair of sidewalls.
2. The trigger pump actuating device according to claim 1, characterized in that the transfer conduit (22) integral with the head is accommodated in (1). 3. The rocking lever (30) has two parallel arms (33) which are spaced from each other and which are external to the gap (21) from the pair of side walls (33). 19, 20) and the rocker lever further comprises a small bridge (36) connecting the two arms to each other at their ends,
The two arms are operatively connected to the transfer head (23), each arm (33) with a counter counter means (27) provided on the opposite side of the side wall (19, 20). 3. The trigger type pump actuating device according to claim 1, further comprising a rotary engaging means (29) for rotary engaging. 4. A trunnion (2) having a circular cross-section, wherein the rotation engaging means carried by each arm of the swing lever is circular.
9) and carried on opposite sides of the side walls juxtaposed to each other, said counter means is a linear groove (2
5) circular cross-section recess located at one end of (2)
7), the other end of the groove is open, and
The groove is formed on the surface of the side wall (19, 20) and extends parallel to the axis (XX) of the tubular portion (2) of the base body (1). The trigger type pump operating device according to claim 3, wherein 5. The trigger lever (32) is mounted on the base body (1) at the free ends of the pair of side walls (19, 20). The trigger-type pump actuator according to any one of claims. 6. The trigger lever (32) has a pair of parallel ears (34, 35) which are spaced apart from each other and juxtaposed integrally with the base (1). Surrounding the pair of side walls (19, 20) from the outside of the gap (21) between the side walls, the ear (3).
4, 35) each of which is juxtaposed with the side wall (19, 20).
6. The trigger-type pump operating device according to claim 5, further comprising a rotary engagement means (31) which is rotationally engaged with a mating counter means (28) formed on the surface opposite to the above. 7. A rotary engaging means carried on each ear of the trigger lever has a trunnion (31) having a circular cross section, and the mating counter means has a linear groove (26).
Cylindrical recess (28) located at one end of the
And the other end of the linear groove (26) is open, and the linear groove has an axis (XX) of the tubular portion (2) of the base body (1). 7. The trigger type pump actuating device according to claim 6, wherein the trigger type pump actuating device is formed on the opposite side of the juxtaposed side walls in a parallel state with respect to FIG. 8. The depth of said grooves (25, 26) is a respective recess (27, 28) formed at one end thereof.
8. The trigger type pump operating device according to claim 4, wherein the depth is smaller than the depth of the groove, and the width of the groove is at least equal to the diameter of the recess. 9. One of the preceding claims, characterized in that the rocking lever (30) engages the trigger lever (32) via a front cam joint (39, 40). The trigger type pump operation device according to. 10. The rocker lever (30) is engaged with the transfer head (23) of the pump via a rest-type coupling (37, 38). Triggered pump actuator according to one of the above. 11. The tubular portion (2) of the base body (1) has an annular gap (41) which is associated with a cap (44) surrounding the trigger pump actuating device. 11. A trigger pump actuating device according to claim 1, characterized in that the corresponding corresponding collars (42) are detachably received in mating relation.