JPS5820971A - Manual operating pump for emptying vessel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a first outlet member that simultaneously operates as an actuating head, a second outlet member connected to this second outlet member, and a second outlet member that returns said actuating head to a spring. a piston adapted to be actuated by pressing against a force, and a no-using fitting to be attached to the housing and container in which the piston is located, comprising a cap, the piston being guided within the cap; The cylinder bore of the pump is connected on one side with the outlet head via an outlet channel extending through the piston and forming a valve, and on the other side with the suction socket via a valve, said piston The above-mentioned installation relates to a manually operated pump for emptying containers, in which the piston together with the cap is locked in a position where it is operated over a predetermined length of stroke.

In such well-known pumps, the operating head provided on the piston shaft is attached to the cap using a screw to prevent unintentional activation during transportation. Locking or locking is performed by this. However, it is difficult to make screw threads using injection molding technology. Furthermore, the threaded connection of the actuating head and the mounting cap requires the relative position of the actuating head and the mounting cap, which creates additional difficulties during manual and mechanical assembly operations.

Manual screw threading results in the thread path having to be discovered during a long period of rotation, which requires the pump to be operated several times to empty the contents of the container. Mechanical assembly operations also require special positioning equipment.

The present invention provides a locking device for a pump of the type described above, that is, it is easy to manufacture and use without incurring the disadvantage of losing a large amount of the contents in the container during the locking operation with the pump fixed to the container. Its basic purpose is to provide a unique locking device.

This problem can be solved by the features of the invention, namely the provision of a second ridge on one of the outlet sections and the attachment of a second ridge on the cap, with at least one of the ridges being elastically flexible. The ridges shall be located radially opposite each other and such that the ridges may be moved past each other coaxially in both directions by means of elastic mutual movement, and with the necessary This can be solved by sizing the ridge so that the force acting on the piston is greater than the maximum force of the return spring.

The locking problem can be solved simply by pressing the actuating head with a greater force than is required for normal operation to receive the desired contents. This can be done manually using only one hand.

Even if locking must be done mechanically, a simple axial movement of the actuating head is sufficient, and the parts must be held in predetermined relative positions before locking. There isn't. A corresponding positioning device is also required. The structure of the raised portion and the structure of the screw are both simple. This is because the ridges have no pitch compared to the screws and are located in a plane perpendicular to the direction of operation. In the locking position,
The ridges lock together like spring catches. By pulling on the locked parts, these parts can be easily separated again.

Advantageously, the first elevation is formed on the actuating head. In the locked position, the first protuberance is such that if the actuating head and the piston shaft are only connected by a snap seat or also by friction,
Additional fixing of the working head to the piston shaft takes place at the same time.

However, the first ridge can also be formed on the piston, so that the mounting can limit the piston guide hole in the cap and form a closed ring by means of the barbed ridge.

The arrangement and construction of such a ridge not only provides locking, but also provides mutual sealing in the area of the piston guide hole of the cap.

When the first ridge is formed on the actuating head, at least one of the ridges is formed in the slit area of the collar, which is axially slit up to the free end. Can be done. This slit collar is particularly flexible. Therefore, these ridges can protrude in the radial direction, so that these ridges can be easily locked, and on the other hand, undesired detachment phenomena can be prevented. .

The force required for mutual displacement or movement of the ridges of the piston should preferably be at least about 50% greater than the maximum of the return spring. In this way, sufficient guarantees are ensured to prevent unintentional locking during normal use conditions.

This is also advantageous in the case where the shutter of the valve is located in the outlet channel and is spring loaded. This ensures a tight seal at each position when the container is full, unless the piston is operated.

The present invention will now be described in detail by way of embodiments with reference to the accompanying drawings.

This pump consists of screws, tons (1), a housing (2) containing this piston, and a housing (2) for the piston (1).
), an actuating or operating head (3) fixed to the shaft extending from the shaft, e.g.
Attachment by means of a screw cap (not shown) on the open edge of a container (not shown) consisting of a bottle, can or the like for powder or similar fluids consists of a cap (41) as the main component. The pump has a return spring (
5), a safety valve with a spherically shaped shutter or shutoff member (6) inserted into the housing (2) and extending in the suction socket (7) with the flexible suction tube (8);
The safety valve is placed in an outlet channel (9) with a spherically shaped shutter (llt) and a conical valve seat (11) and a fixing device tightly inserted into the shaft hole for pressing the shutter against this valve seat. Each includes a spring (6) supported by a bushing Q31.

The outlet channel (9) passes through the bushing (2) and the actuating or operating head (3) to the outlet pipe (1) of the head (3).
5) to the outlet hole (14) at the end of the head (3) so that the head (3) at the same time forms the first outlet member and the piston (1) at the same time forms the second outlet member. ing.

The operating head (3) has a cylindrical thin-walled collar or skirt (
16). The attachment also includes a cylindrical thin-walled collar (17). The collar (16) has a radially outwardly directed ridge (18) and the collar (17)
are each provided with a radially inwardly directed ridge (19). Attachment is such that the piston guide hole in the cap (4) is defined by a radially inwardly directed bulge (2o).

The piston (1) is provided with a radially outwardly directed ridge (21) in the area of its shaft. Furthermore, color (17)
Continuous slinting axially upwards to the free edge)
(22) i, the raised part (20) is provided with a conical surface (23) on its underside, and the piston (11) is provided with a conical surface (24) matching the surface (23); be.

The ridges (1B) (19) (20) and (21) are in a concentric relationship, and the size of each of these ridges is determined by the elastic mutual displacement of these ridges in the two axial directions relative to each other. The design is such that they can pass each other, but this mutual passing is prevented by the head (3) screws)/(11 returning to the spring (5).
) is applied to the head (3) by a force greater than the maximum force of the return spring (5). 50 of the normal force required to carry out the process of emptying the container.
By pressing down the operating head (3) with as much force as possible, the raised parts (18) (19) (2o) (21
) can be brought to the position shown in FIG.
20) The actuating head (31) and the mounting cap (41) are locked together by the two paired ridges so that they grip or tighten together. This locked state is primarily used for transporting containers with pumps attached, which can result in the contents of the container being inadvertently lost due to involuntary pushing or pressure on the operating head. On the other hand, the return spring (5) alone cannot force the piston (1) from the locking position shown in FIG. 2 to the operating position shown in FIG. A manual tension force must be applied to the head (3), which is rigidly fixed to the shaft of (1).When the ridge (21) is in the locking position shown in Figure 2, the conical surface (23) This simultaneously seals the gap between the ridge (20) and the shaft of the piston (1), thereby allowing the container to pass through the side vent (25) of the housing (21). The spring (2) provides sufficient force to keep the shutter acid in the locking position as shown and the head (31) in the locking or inactive position. prevent unintentional loss of the contents of the container.

The required dimensions of the ridges (18) (19) are the collar (17).
), these slots give the collar sufficient elasticity or flexibility to prevent locking or non-locking when the ridges (18) and (19) protrude all the way in the radial direction. Make it possible to pass each other to solve the problem. Slots corresponding to these may be additionally provided in the collar (16),
It may be provided only on the collar (16). If necessary, remove one or both of the raised portions (18) (19).

It may also be interrupted in the circumferential direction by a slit.

On the contrary, the ridges (20) (21) should be continuous in order to obtain the maximum sealing effect.

The sealing ring (26) provides a seal around the edge of the container hole.

All parts of the pump, with the exception of the balls and springs, are made of elastic synthetic material9, which allow the ridges (20) (21) to move radially relative to each other and to release them when the necessary locking and unlocking forces are applied. They are made to be able to move past each other due to their own elasticity and corresponding size. If necessary, one or the other of the paired protuberances can be stopped. For example, the pair of raised parts (21) has a thick container content, and is attached with a cap (2).
4) can be omitted if the diameter of the piston guide hole is precisely adjusted to the outer diameter of the piston shaft.

Although the present invention has been described above in detail with reference to the embodiments, it goes without saying that the embodiments can be modified in various ways without departing from the spirit of the invention.

[Brief explanation of the drawing]

FIG. 1 shows a cross section along the axis of the pump according to the present invention when it is unlocked, and FIG. 2 shows a cross section along the axis when the pump is locked. l... Piston, 2... Housing, 3... Operation (operation) head, 4... Mounting cap, 5... Return spring, 6... Safety valve shutter, 7... Suction socket, 8... Suction pipe, 9... Outlet channel,
10...11 shutter, 11...valve seat, 12...
・Spring, 13... Bushing, 14... Outlet hole, 1
5...Ejection pipe, 16...3 color, skirt, 1
7...4 collar, 18...16 raised part, 19...
...17 raised parts, 20...4 raised parts, 21...
1 raised part, 22...17 slit, 23... lower surface of 24...l conical surface, 25...2
ventilation hole, 26...sealing ring.

Claims (6)

[Claims] (1) having a first outlet member simultaneously acting as an actuating head and forming a second outlet member connected to the first outlet member to return said actuating head against the force of a spring; a housing having a piston adapted to be actuated by pressure, and further comprising a cap for the housing and a housing in which the piston is positioned, the piston being guided within the cap; the cylinder bore of the pump being connected on one side with the outlet head via an outlet channel extending through the piston and forming a valve, and on the other side with the suction socket via the valve; and in a manually operated pump for emptying a container, the outlet section ( l: 3) on one side of the first protuberance (18: 21
), and the installation is done by attaching a second raised part (19) to the cap (4).
; 20) and at least a raised portion (18, 19,
20) One of them is elastically flexible, and the raised part (1
8, 19; 20. 21, ) are located radially opposite each other and these ridges are able to move coaxially past each other in both directions by elastic mutual displacement and act on the pistons necessary for this mutual displacement. Spring that returns the force (5)
A manually operated pump characterized in that the ridges are dimensioned to be greater than the maximum force of the pump. (2) The manually operated pump according to claim (1), characterized in that the first raised portion (18) is formed on the operating head (3). (3) A first ridge (21) is formed on the piston (1), a second ridge (20) defines the piston guide hole of the cap, and both ridges (20, 21) A manually operated pump according to claim 1, characterized in that it forms a closed link. (4) At least one of the raised portions (18, 19) is attached to a collar (17) provided with an axial slit up to the free end;
A manually operated pump according to claim 2, characterized in that the collar is formed within a slit area. (5) The force acting on the piston required for the mutual movement of the ridges (18, 19, 20, 21) is increased by at least about 50 cm compared to the maximum force of the return spring. The manually operated pump according to any one of ranges (1) to 41. (6) Manually operated pump according to any one of claims (1) to 4), characterized in that the shutter 11 of the valve arranged in the outlet channel (9) is of a spring-loaded type.