JP2539183Y2 - Cylinder for fluid discharger - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder for a liquid discharger such as a liquid or a cream.

[0002]

2. Description of the Related Art As shown in Japanese Utility Model Application Laid-Open No. 25366/1988, for example, a cylinder is suspended from a cylinder mounted on a mouth of a container body.
A cylinder member with a suction valve, and an operating member with a discharge valve that stands upright from a cylindrical piston fitted into the cylinder and a head with a nozzle is fitted to the upper end of the stem. 2. Description of the Related Art There is known a fluid ejector provided so that a fluid in a container is sucked into a cylinder by a movement and discharged from a nozzle. The cylinder of the dispenser is provided with an outward flange for engagement with the top surface of the container body below the fitting cylinder, leaving an upper end thereof as a fitting cylinder for the female screw cylinder, and an upper outer surface of the fitting cylinder. An engagement ridge is provided around.

[0003]

The above-mentioned conventional cylinder is integrally formed of a synthetic resin material, but has an outward flange at the top of the cylinder and an engaging ridge above the cylinder. There was a disadvantage that the structure of all types became complicated.

In the present invention, a plurality of the engaging ridges are provided intermittently, and a punching hole for forming the engaging ridge is formed in an outward flange portion immediately below the engaging ridge. , So that the entire structure for forming the cylinder can be simplified.

[0005]

Means for Solving the Problems An engaging ridge is provided around the outer surface of the upper end of the cylinder, and a container body is provided on the outer surface of the cylinder below the engaging ridge with a small gap between the engaging ridge. In a fluid ejector cylinder made of a synthetic resin provided with an outward flange for engagement with the top surface, a plurality of die-cut holes 28 are formed at substantially equal intervals along the base end periphery of the outward flange 27. The engaging ridges 29 are provided intermittently in the circumferential direction of the cylinder while leaving only a plurality of upper portions of the respective punching holes. The length in the circumferential direction and the width in the radial direction of the cylinder are slightly larger in the circumferential direction or in the punching hole.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a fluid discharger will be briefly described. Reference numeral 1 designates a cylinder member having a suction valve 3 which hangs a cylinder 20 from a mounting cylinder 2 attached to a container body opening. Are urged upward to fit vertically. The operating member raises the stem 7 from the cylindrical piston 6 fitted into the cylinder,
A head 9 with a nozzle 8 is fitted to the upper end of the stem, and an outer surface of a stem fitting tube 10 vertically suspended from the head is used as a male screw, and a female screw integrally fitted with the above-described mounting tube is fitted to the upper end of the cylinder. It is provided so that the operating member can be kept in a lowered state by being screwed into the cylindrical portion 11. Reference numeral 12 denotes a poppet, and a suction valve 3 is formed by the lower end surface of the poppet and the bottom of the cylinder. The operating member 5 is pushed up by the spring 13 by unscrewing the male screw, and the fluid in the container is sucked into the cylinder through the suction valve 3 by moving the operating member up and down from the pushed up state. And the fluid in the cylinder is the discharge valve 4
Is discharged from the nozzle 8 through the nozzle.

The cylinder 20 has an upper portion as a large-diameter portion 21 and a lower portion as a small-diameter portion 22, and a suction pipe fitting cylinder 23 hangs down from a lower end. Several guide ridges 24 are provided vertically on the lower half inner surface of the small diameter portion, and the inner surface between the lower end of the small diameter portion and the suction pipe fitting cylinder 24 is a tapered valve seat 25 having a small diameter below.

An outside air suction hole 26 is formed at the lower end of the large-diameter portion 21, and an outward flange 27 is formed on the lower outer surface of the large-diameter portion.
Is attached. The outward flange is provided with a plurality of punched holes 28 at substantially equal intervals along the peripheral edge of the base end. On the upper outer surface of the large-diameter portion, an engaging ridge 29 for locking the outer cylinder portion of the female screw cylinder section 11 is intermittently provided as shown in FIG. The engaging ridges 29 are provided only on the upper portions of the respective die-cutting holes, and each of the engaging ridges 29 and the die-cutting holes 28, which are positioned correspondingly up and down, have a circumferential length and a cylinder length, respectively. The width in the radial direction is set to be the same or the size of the die-cutting hole is slightly larger. Compared with the engaging ridges of the above-described conventional cylinder, the engaging ridges are conventionally provided in a ring shape, whereas in the present invention, the engaging ridges are provided in the upper portion of the die removing hole. Only arranged intermittently. In addition, a plurality of grooves 30 having an upper end surface opening are vertically provided on the upper inner surface of the large-diameter portion 21, and a vertical ridge fitted into these grooves is provided on the inner surface of the female screw tube portion 11, and the female screw tube portion with respect to the cylinder 20 is provided. To prevent rotation.

[0009]

The present invention has the above-described structure. In a cylinder for a fluid discharger, a plurality of die-cut holes 28 are formed at substantially equal intervals along the base end peripheral edge of an outward flange 27 at the top of the cylinder. A plurality of engaging ridges 29 are intermittently arranged on the upper surface of the cylinder above the die-cutting hole, and each engaging ridge 29 and the die-cutting hole 28 are positioned correspondingly up and down. The circumferential length of the cylinder and the lateral width of the cylinder in the radial direction are the same or the size of the die-cutting hole is slightly larger. To form the upper cylinder outer surface,
It is necessary to provide a split mold and form a recess for forming an engaging ridge on the inner surface of each of the dies. Therefore, forming the mold is troublesome. From the cylindrical mold for forming the outer surface of the cylinder below the outward flange,
By erecting the plate-shaped mold portion for forming the lower surface of 29, the mold for forming the cylinder outer surface above the outward flange can also be formed by a cylindrical, non-divided mold. It can be simplified.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a fluid discharger using a cylinder according to the present invention.

FIG. 2 is a perspective view of the upper part of the cylinder of the present invention.

[Explanation of symbols]

 20 Cylinder 28 Mold release hole 29 Engagement ridge

Claims (1)

(57) [Scope of request for utility model registration] An engaging ridge is provided around an outer surface of an upper end portion of a cylinder, and a small gap is formed between the engaging ridge and an outer peripheral portion of the cylinder body below the engaging ridge. In a fluid ejector cylinder made of synthetic resin provided with a joint outward flange, a plurality of die-cut holes 28 are formed at substantially equal intervals along the base edge of the outward flange 27, and the engagement is performed. The protruding ridges 29 are provided intermittently in the cylinder circumferential direction while leaving only a plurality of upper portions of the respective die-cutting holes, and the circumferential direction of each engaging ridge 29 and the die-cutting hole 28 corresponding to the upper and lower portions thereof. A cylinder for a fluid discharger, characterized in that the length and the width in the cylinder radial direction are the same or the size of the die-cutting hole is slightly larger.