JPH04137758U - Manually operated pump - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a manually operated pump that is composed of as few parts as possible to reduce costs. [Configuration] Fixed part screw cap 6, fixed side guide tube 7
A cylinder 9 with a suction port 16 opened at the bottom is formed in one piece as a fixed member 1, and a cylindrical piston 1 as a movable part.
0, a stem 11, a push-down head 13 with a nozzle pipe 12, and a movable guide tube 14 that comes into sliding contact with the fixed guide tube 7 to prevent it from coming off, are formed as one piece as the movable member 2, and the suction port 16 at the bottom of the cylinder 9 is formed as one piece. A suction valve 17 to be closed and an elastic discharge valve 18 in the shape of an inverted skirt that comes into elastic contact with the inner surface of the midsection of the stem 11 are integrally connected by a long valve shaft 15 that can be moved up and down, and are formed as a valve member 4 in one piece. A configuration in which a single component return spring 3 and suction pipe 5 are assembled into three components to form a maximum of five components.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This device is used for dispensing liquids in the form of mist, water column, or cream. Regarding manually operated pumps.

0002

[Conventional technology]

Many manually operated pumps of this type have been provided and are well known. Figure 2 shows an example of a liquid dispenser for tube containers that has recently been applied for (Utility Application No. 2-85208). ), and the manually operated pump is described as a dispenser body.

0003 In the figure, 31 is a cylinder, 32 is a cylindrical piston fitted inside this cylinder 31, and 33 34 is a stem whose lower end is fixed to this cylindrical piston 32 and stands up on the outside. A push-down head with a nozzle pipe 35 protruding from the side and communicating with the upper end of the stem 33, 36 is a cylinder. The movable parts of the cylindrical piston 32, stem 33, and push-down head 34 are A return spring that pushes upward, 37 and 38 are ball-shaped suction and discharge valves, and 39 is a cylinder. A rod member fixed to the axis of the cylinder 31 that controls the upper limit position of the movable part and the upper limit of the suction valve 37. The position is determined, and 40 is a screw member for locking to prevent erroneous push-down operation. Immediately Then, press down the movable part to the position shown in the figure, which is further below the normal pressing position. By screwing the screw 41 of the part into the female thread member 40, there is no problem during the distribution process. Careless push-down operations can be prevented. The figure shows this locked state. Furthermore, 42 is This is a screw cap for installation.

0004 With this configuration, when the push-down head 34 is pushed down against the return spring 36, the push-down head 34 is pushed down as a unit. The descending cylindrical piston 32 pressurizes the liquid in the cylinder 31, so this pressurized liquid is discharged. The valve 38 is pushed up and opened, and the liquid is poured out from the nozzle pipe 35. When dispensing is finished, the cylindrical pipe The movable parts of the stone 32, stem 33, and push-down head 34 are returned upward by the return spring 36. With this return, the pressure inside the cylinder 31 becomes negative, so the suction valve 37 opens and the inside of the container body 43 In response to this suction, part of the container body collapses to accommodate the suction. . Note that if the container body 43 is a rigid bottle, a suction pipe 44 is required as shown by the chain line. becomes.

[0005]

[Problem that the idea aims to solve]

One of the problems with this type of manually operated pump is that it has a large number of parts and is expensive. It is. In the above example, even if the screw member 40 is omitted, the cylinder 31, the cylindrical piston 32, Stem 33, push-down head 34, return spring 36, suction valve 37, discharge valve 38, rod member 39, spring It is constructed using 10 parts including the same cap 42 and suction pipe 44.

[0006] This invention is a manually operated pump designed to reduce costs by using as few parts as possible. It's about getting the pool.

[0007]

[Means to solve the problem]

The manually operated pump of this invention has a mounting screw with a large hole in the center of the top plate. A fixed side guide tube 7 is installed upright from the periphery of the opening of the cap 6, and a ventilation hole 8 is provided in the midsection of the cap 6. A fixing member 1 in which a perforated vertical cylinder 9 is vertically disposed, and the inside of the lower half of the cylinder 9 A stem 11 is raised upwardly and externally from the cylindrical piston 10 whose surfaces are in sliding contact, and the stem 11 is Bend the end to one side to form the nozzle pipe 12, and press down the top of this bend to form the head 13. and a movable guide tube that slides into contact with the fixed guide tube 7 from the back side of this push-down head 13. The movable member 2 has a vertically extending cylinder 14, and the movable member 2 is housed inside the cylinder 9 and the movable member 2 is When the return spring 3 is pushed up to the upper limit and the stem is pushed up from the bottom of the cylinder 9 A valve shaft 15 is installed inside the shaft core part extending up to the midsection of the valve shaft 11 so as to be able to move up and down through the scheduled stroke. Connect the lower end of the valve stem 15 to the suction valve 17 that can close the suction port 16 at the bottom of the cylinder 9, and connect the upper end to the suction valve 17 that can close the suction port 16 at the bottom of the cylinder 9. The valve member 4 is formed into an inverse skirt-shaped discharge valve 18 that comes into elastic contact with the inner surface of the stem 11; It is composed of five parts including a suction pipe 5 which is connected and suspended downward from the suction port 16.

[0008]

[Effect]

In FIG. 1, the movable part 2 is pushed up to the upper limit by the return spring 3, and the valve member 4 is This shows that the suction valve body 17 is always in the lower limit position and is blocking the suction port 16. .

[0009] During pouring, the movable part 2 is pushed down by the push-down head 13. Then, in the same body The descending stem 11 and cylindrical piston 10 pressurize the liquid inside the cylinder 9, so the pressurized liquid The discharge valve 18 is forcibly pushed open and is poured out from the stem 11 through the nozzle pipe 12. Ru.

0010 After dispensing the liquid, when you stop pressing down, the movable part 2 is raised to the upper limit position by the return spring 3. This return causes negative pressure in the cylinder 9, causing the valve member 4 to float upward and cause suction. The opening 16 is opened, and the liquid inside the container (not shown) flows into the cylinder 9 through the suction pipe 5. After being sucked up, the valve member 4 is lowered to its original position, and each part returns to its original state.

[0011]

【Example】

An embodiment of the invention will be described below with reference to the drawings. Consists of five members: a fixed member 1, a movable member 2, a return spring 3, a valve member 4, and a suction pipe 5. The parts other than the return spring 3 are molded from synthetic resin material.

0012 The fixing member 1 has a fixing part molded in one piece, and the center part of the top plate is made large. A fixed-side guide tube 7 is erected from the periphery of the hole in the mounting screw cap 6, and this A vertical series whose diameter is reduced in two steps from the periphery of the hole so that the guide tube 7 extends downward. Under 9 is installed vertically.

[0013] A locking protrusion 19 is provided on the inner periphery of the upper end of the fixed side guide cylinder 7, and There are ventilation holes 8, 8 on both sides, and diagonally inward and downward in the center of the bottom of the cylinder 9. A suction port 16 inclined in the direction is opened, and a small-diameter connecting tube 20 is inserted from the periphery of the lower surface of this suction port 16. is installed vertically, and several springs are installed at intervals in the circumferential direction on the top surface of the bottom to surround the suction port 16. A receiving piece 21 is provided.

[0014] The movable member 2 is formed by molding the movable part as one piece, and includes a thin valve at the lower end. Inwardly from the cylindrical piston 10 which is in elastic contact with the inner surface of the small diameter part of the lower half of the cylinder 9. A thick stem 11 with the same outer diameter is raised upwardly and externally, and the upper end of this stem 11 is placed on one side. It is bent to form a nozzle pipe 12, and the bent top is formed into a push-down head 13, Also, a movable side guide that fits inside and slides into contact with the fixed side guide cylinder 7 from the back side of this push-down head 13. It has a shape in which an inner cylinder 14 is vertically provided.

[0015] The outer periphery of the lower end of this movable side guide cylinder 14 is engaged with the locking protrusion 19 to form the upper limit of the movable part 2. A locking protrusion 22 is provided to define the position and prevent the stem 11 from coming off. On the outer surface of the lower part, there is a skirt-shaped elastic for ventilation that comes into elastic contact with the inner surface of the large diameter part of the upper half of the cylinder 9. A valve 23 is provided.

[0016] The return spring 3 is coil-shaped and is housed inside the cylinder 9, and is attached to the spring receiving piece 21. It is inserted between the downward stepped part of the lower end of the stem 11 and pushes the movable part 2 up to its upper limit. .

[0017] The valve member 4 has a round shaft at its core extending from the bottom of the cylinder 9 to the midsection of the stem 11. A shaft-shaped valve stem 15 is installed inside the valve stem 15, and the lower end of this valve stem 15 is shaped to correspond to the suction port 16. A suction valve 17 is formed to close the suction port 16 of the lever, and an inverted skirt shape is provided at the upper end. It has a shape in which a discharge valve 18 is formed by an elastic valve that opens and comes into elastic contact with the inner surface of the stem 11, and the valve Several engaging pieces 24 are provided in the radial direction between the respective spring receiving pieces 21 at the lower part of the shaft 15, The length of time until this engaging piece 24 floats from the position shown in the figure and locks on the end surface of the lower end of the return spring 3 It is arranged so that it can move up and down during the stroke.

[0018] The suction pipe 5 is connected to the cylinder 9 by fitting the upper end into the connecting pipe 20, It is suspended below the inside of a container (not shown).

[0019] In this embodiment, when the movable part 2 is pushed down via the push-down head 13 from the normal position shown in the figure, , since the stem 11 and the cylindrical piston 10 that descend together pressurize the liquid inside the cylinder 9. , the pressurized liquid is forcibly pushed open the discharge valve 18 and is injected to the outside through the stem 11 and the nozzle pipe 12. Served.

[0020] When the pushdown is stopped due to liquid pouring, the movable part 2 is moved to the upper limit position by the return spring 3. The cylinder 9 returns to the upward position, and this return creates negative pressure in the cylinder 9, causing the valve member 4 to float upward. The suction port 16 opens, and the liquid inside the container (not shown) flows into the cylinder through the suction pipe 5. 9, and after this suction, the valve member 4 descends to its original position, and each part returns to its original state. .

[0021] In the above embodiment, if the container body is a tube container or a bag-like container, the suction pipe 5 becomes unnecessary. In addition to pressing down the movable part 2, it is also possible to return the movable part 2. When operating manually, the return spring 3 is also not required, so in these cases three parts are required. It will be fine.

[0022]

[Effect of the idea]

As mentioned above, in the manually operated pump of this invention, the screw cap, which is a fixed part, The cup 6, fixed side guide tube 7, and cylinder 9 are formed as one piece as the fixed member 1, and can be The moving parts, such as the cylindrical piston 10, stem 11, push-down head 13, and movable guide tube 14, are included. The moving member 2 is formed in one piece, and the suction valve 17 and the discharge valve 18 are mounted on a long valve shaft 15. Since it is provided at the lower end and is formed as one piece as the valve member 4, it can be made up of five parts at most, depending on the case. Therefore, it can be formed with a small number of three parts, which has the effect of significantly reducing costs. have

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of one embodiment.

FIG. 2 is a half-part vertical side view of a liquid dispensing container showing an example of a conventional manually operated pump.

[Explanation of symbols]

1 Fixed member 2 Movable parts 3 Return spring 4 Valve member 5 Suction pipe

Claims (1)

[Scope of utility model registration request] 1. A vertical cylinder 9 with a fixed side guide cylinder 7 erected from the periphery of the opening of a mounting screw cap 6 which has a large hole in the center of the top plate, and a ventilation hole 8 with a vent hole 8 in the midsection thereof.
A stem 11 is raised upwardly and externally from a fixed member 1 having a vertically disposed structure, and a cylindrical piston 10 that slides into contact with the inner surface of the lower half of the cylinder 9, and the upper end of this stem 11 is bent to one side to form a nozzle pipe 12. The bent top part is used as a push-down head 13, and the movable member 2 has a movable-side guide cylinder 14 vertically disposed from the back side of this push-down head 13 in sliding contact with the fixed-side guide cylinder 7; A return spring 3 that always pushes up the movable member 2 to its upper limit, and a valve shaft 15 installed inside the shaft from the bottom of the cylinder 9 to the midsection of the stem 11 so as to be able to move up and down over a predetermined stroke, make this valve The lower end of the shaft 15 is formed into a suction valve 17 that can close the suction port 16 at the bottom of the cylinder 9, and the upper end is formed into a reverse skirt-shaped discharge valve 18 that comes into elastic contact with the inner surface of the stem 11. The valve member 4 communicates downward from the suction port 16. A manually operated pump consisting of a suction pipe 5 that hangs down.