JPH0624367Y2 - Pump type liquid discharge container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a pump-type liquid discharge container for discharging or ejecting liquid in a container as it is, or in the form of mist or foam.

"Prior Art" For example, as shown in Japanese Utility Model Laid-Open No. 62-114672, a container body, a cylinder attached to the container body, and a stem with a cylindrical piston in the cylinder are vertically movable and mounted upward. And a working member having a push-down head fitted with a nozzle fitted to the upper end of the stem, and a screw pipe is fixed to the upper end of the cylinder to push the working member into the screw pipe. There is known a pump type liquid discharge container in which a connecting portion between a stem and a head is screwed.

"Problems to be solved by the device" The operating member with a nozzle is pushed down against the container body and the cylinder against the bias, and the stem of the operating member and the head are connected to the screw tube fixed to the upper end of the cylinder. The connecting part is screwed in order to prevent the upper part of the operating member from projecting high from the container body and preventing the package from becoming bulky.However, when the operating member is pushed down, liquid from between the screw tube and the operating member is pressed. In order to prevent leakage and to prevent the actuating member from being unscrewed due to vibration or the like, a small inner diameter portion is formed on the inner surface of the lower portion of the screw tube so that the inner surface of the small inner diameter portion is watertightly pressed against the outer surface of the connecting portion. It was However, in this case, it becomes difficult to unscrew the screw pipe and the connecting pipe portion. Therefore, when the actuating member is rotated for screw unscrewing, the mounting member that mounts the cylinder on the container body is I was sometimes out of my body.

According to the present invention, in place of the small inner diameter portion, an elastic skirt-shaped portion is projected downward inward from a lower end of a threaded portion of a screw tube inner surface, and the inner surface of the elastic skirt-shaped portion is watertightly pressed against the outer surface of the connecting portion, This is to ensure the sealing property for preventing liquid leakage and the prevention of loosening due to vibrations, etc., and also to prevent the screw tube, the cylinder, and the mounting member from being unscrewed together when the operating member is unscrewed as described above. .

"Means for Solving the Problems" A container body 1, a cylinder 2 mounted on the container body, and a stem 8 with a cylindrical piston movable up and down in the cylinder,
And an actuating member 7 in which a push-down head 12 with a nozzle is fitted on the upper end of the stem, and the screw tube 14 is fixed in the upper end of the cylinder. In the pump type liquid discharge container in which the connecting portion of the stem 8 and the head 12 is screwed to the surface in the state where the operating member is pushed down,
An elastic skirt-shaped portion (18) is projected downward from the lower end of the threaded portion of the inner surface of the screw tube (14), and the inner surface of the elastic skirt-shaped portion is resiliently and watertightly elastic to the outer peripheral surface of the connecting portion. Pressed.

"Operation" The elastic skirt-like portion 18 attached to the screw tube 14 in the illustrated state is water-tightly elastically pressed against the outer surface of the connecting tube 13 portion between the stem 7 and the head 12, so that even if the container falls down, these There is no leakage from the gap. Further, since the elastic skirt portion is in elastic contact, the actuating member 7 does not loosen with respect to the screw tube 14 due to a vibration or the like, and the actuating member 7 can be easily unscrewed from the screw tube 14. .

"Example" 1 is a container body, and a cylinder 2 is vertically provided in the container body. The cylinder has an upper outward flange 3 placed on the top surface of the container body via a packing 4, and is mounted on the outer surface of the neck of the attachment tube 5 at the upper end of the inward flange 6
It is sandwiched by the top surface of the container body. An engaging projection 2b is provided around the outer surface of the cylinder portion 2a above the outward flange, and a plurality of anti-slip projections are provided vertically on the inner surface of the cylinder portion.

Inside the cylinder 2, a stem 8 of an operating member 7, a lower cylinder member 9 having an upper part fitted to the lower part of the stem, and a cylindrical piston 10 fitted to the outer surface of the lower cylinder member so as to be vertically movable by a predetermined stroke.
Are fitted against the upward bias. The actuating member has a push-down head 12 fitted with a nozzle 11 fitted on the upper end of the stem, and the stem upper part fitted into the lower part of a connecting pipe 13 suspended from the top wall of the head.

The lower outer surface of the connecting pipe is screwed onto the inner surface of the screw pipe 14 fitted to the upper end of the cylinder. The screwing is carried out in order to prevent the upper part of the operating member 7 from projecting high above the cylinder due to the pushing up of the spring 15 to make the packaging bulky in this state, and to keep the operating member pushed down to the lower limit. There is. When the liquid is discharged from the inside of the container by the vertical movement of the operating member, the cap 16 is removed and the screw is removed to raise the operating member 7, and the vertical movement of the operating member causes it to hang down from the lower end of the cylinder. The liquid in the container is sucked into the cylinder through the suction pipe 17, and the liquid in the cylinder is discharged from the nozzle 11 through the stem 8.

An elastic skirt-shaped portion 18 projects downward inward from the lower end of the threaded portion of the inner surface of the screw tube 14, and the inner surface of the elastic skirt-shaped portion is transferred to the lower inner surface of the connecting pipe 13 and elastically. Resistance and watertight elastic contact. The screw tube 14 may be integrally formed of an elastic synthetic resin material. In the illustrated example, the threaded pipe 14 hangs a short cylinder portion 21 fitted to the outer surface of the upper end portion of the cylinder described above from an outward flange 20 attached to the upper end of the main cylinder portion 19, and further from the outer circumference of the outer flange to the outer cylinder. 22 are installed vertically. On the outer surface of the upper portion of the main cylinder portion 19, a plurality of anti-slip ridges for engaging with the above-mentioned anti-slip ridges on the cylinder side to prevent the rotation of the screw tube 14 with respect to the cylinder 2 are attached, and the short tube On the inner circumference of the lower end of the portion, there is provided an engaging ridge 21a which engages with the engaging ridge 2b and prevents the screw tube from being pulled out upward.

[Advantages of the Invention] The present invention is configured as described above, and the elastic skirt-shaped portion is projected inward from the lower inner surface of the screw tube 14 fixed to the upper end of the cylinder, and the lower inner surface of the elastic skirt-shaped portion 18 is projected. Is pressed against the outer surface of the connecting portion between the stem 8 and the head 12 of the actuating member 7 against the elasticity of the actuating member 7 in a watertight manner, so that the fitting of the actuating member 7 to the screw tube becomes too hard as in the conventional case. A screw tube and a cylinder to which the screw tube is fixed when the operating member is unscrewed,
Further, the mounting cylinder 5 for pressing the inward flange 6 onto the upper surface of the outward flange 3 of the cylinder is also rotated, so that the screw tube 14
It is not difficult to unscrew the operating member from the. Further, since the elastic skirt portion is elastically pressed against the operating member,
It is possible to prevent the operation member from loosening due to a vibration or the like and being unscrewed. Liquid leakage between the screw tube 14 and the operating member can be reliably prevented by the watertight contact of the elastic skirt portion.

[Brief description of drawings]

FIG. 1 is a half sectional view of the container of the present invention, and FIG. 2 is an enlarged sectional view of the main part thereof. 1 ... Actuating member, 14 ... Screw tube, 18 ... Elastic skirt

Claims (1)

[Scope of utility model registration request] 1. A container body 1, a cylinder 2 attached to the container body, and a stem 8 with a cylindrical piston fitted in the cylinder so as to be vertically movable and urged upward to fit the stem body. Actuating member 7 with a push-down head 12 with a nozzle fitted on the upper end
And a screw tube 14 is fixed in the upper end portion of the cylinder, and the stem 8 is pushed to the inner surface of the screw tube while the operating member is pressed down.
In a pump-type liquid discharge container in which a connecting portion between the head and the head 12 is screwed, an elastic skirt-shaped portion 18 is projected inward from a lower end of a thread-attached portion of the inner surface of the screw tube 14 to form an inner surface of the elastic skirt-shaped portion. And a water-tight elastic pressure contact with the outer peripheral surface of the connecting portion in a watertight manner.