JPH0531077Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a cartridge that is used by filling a paste-like substance such as a caulking agent or a sealing agent and extruding it as necessary.

BACKGROUND TECHNOLOGY As shown in FIG. 7, a conventional cartridge includes a cartridge body 41 having a forwardly projecting nozzle connecting cylinder portion 44 at the edge of a discharge hole 43 of a front wall 42, and a nozzle connecting tube portion 44. There is known a device that includes a nozzle 45 whose base is fitted onto a cylindrical portion 44. The cartridge body 41 has a built-in plunger 46 for extruding the filling material. A male thread 47 is provided on the outer surface of the nozzle connecting cylinder portion 44, and a female thread 48 screwed into the male thread 47 is provided on the inner surface of the base portion of the nozzle 45. In addition, the discharge hole 43 is closed with an airtight thin film 49,
This is torn off upon use.

As shown in FIG. 8, the cartridge is fixedly held by the cartridge gun G, and in this state, the front end of the cartridge body 41 is brought into contact with the distal end stopper S of the gun G.

Problems to be Solved by the Invention When the cartridge is used, the tip of the nozzle 45 is pressed against the construction site, as shown in FIG. 9. In this case, since the nozzle 45 is bent, the base of the nozzle 45 is deformed and a gap C is created between the nozzle connecting cylinder part 44 and the nozzle 45, and there is a possibility that the contents may leak from the gap C. Moreover, when the pressing force of the plunger 46 acts on the front wall 42,
The front wall 42 bulges out, and together with the above-mentioned deformation of the nozzle 45, the nozzle 45 may fall off from the nozzle connecting cylinder portion 44.

The purpose of this invention is to provide a cartridge that solves the above problems.

Means for Solving the Problems The cartridge according to this invention includes a cartridge main body in which a forwardly protruding nozzle connecting tube is provided at the edge of the discharge hole in the front wall, and a nozzle in which the base is fitted over the nozzle connecting tube. In the cartridge which is fixedly held in the cartridge gun with its distal end stopper in contact with the front end of the cartridge body, an outward protruding part is attached to the front wall on the outer surface of the base of the nozzle. It is characterized in that it is provided so that it can be held in place by a stopper.

Function: In the cartridge according to this invention, since the outward projecting part is provided on the outer surface of the base of the nozzle so that it can be held between the front wall and the stopper, even if the nozzle is deformed when the cartridge is used, Even if the front wall tries to bulge, the overhang prevents this.

Embodiment An embodiment of this invention will be described below with reference to the drawings.

<Example 1> In FIG. 1 showing Example 1, the cartridge includes a cartridge main body 11 fixedly held by a cartridge gun G, and a cartridge main body 11 fixedly held by a cartridge gun G.
The nozzle 12 has a nozzle 12 with most of it protruding further forward.

The cartridge gun G has an upright tip stopper S, which is approximately in the shape of a semi-disc with a notch for inserting the nozzle formed in the center of its upper edge (see FIG. 8).

The cartridge body 11 consists of a cylindrical body wall 21 and a dish-shaped front wall 22. The trunk wall 21 is made of a laminate mainly made of kraft paper, and the inner surface is covered with aluminum foil laminated with polyethylene film, and the outer surface is covered with paper for exterior wrapping. The front wall 22 is made of an aluminum plate on which a piston film is laminated. The front end of the trunk wall 21 and the peripheral edge of the front wall 22 are joined by winding. A discharge hole 23 is provided in the center of the front wall 22, and a forward-projecting nozzle connecting cylinder portion 24 is integrally provided at the edge of the discharge hole 23. An annular protrusion 25 is formed at the tip of the nozzle connecting cylinder part 24 by curling. Further, the discharge hole 23 is closed with an airtight thin film 26.

The nozzle 12 is integrally molded from polystyrene resin and has a generally U-shaped longitudinal section, and has an ejection hole 31 at the tip. An annular groove 32 into which an annular protrusion 25 is inserted is formed on the inner surface of the base of the nozzle 12 . An outward projecting portion 33 is integrally provided on the outer surface of the base of the nozzle 12. The projecting portion 33 has an annular shape having a thick wall portion 33a at the tip edge (see FIG. 4). The front surface of the projecting portion 33 is flush with the front end of the cartridge body 11, and the projecting portion 33 is sandwiched between the front wall 22 and the stopper S with the cartridge main body 11 in contact with the stopper S.

<Example 2> In Fig. 2, a cartridge showing Example 2 is shown, but since this has the same basic structure as that of Example 1, corresponding parts are given the same reference numerals. A detailed explanation will be omitted, and only the differences will be explained below.

Trunk wall 21 and front wall 2 of cartridge main body 11
2 are both molded from polyethylene resin, and both are joined by heat sealing. Both the annular protrusion 25 and the groove 32 are discontinuous, and are located at positions that divide the same circumference into four equal parts. The projecting portion 33 has an annular shape with a constant overall thickness.

<Example 3> In FIG. 3, a cartridge showing Example 3 is shown, which is basically a combination of the cartridge of Example 1 and the cartridge of Example 2. That is, the cartridge body 11
is from Example 1, and the nozzle 12 and overhang 33 are from Example 2. However, the height of the nozzle connecting tube 24 is lower than that of Example 1, and an annular protrusion 25 is formed on the inner surface of the base of the nozzle 12, and an annular groove 32 is formed on the outer surface of the nozzle connecting tube 24.

In any of the above embodiments, the projecting portion 33 was annular as shown in FIG. 4, but as shown in FIG.
Alternatively, as shown in FIG. 6, the projecting portion 35 may be a combination of an annular shape and a radial shape.

Effects of the invention According to this invention, when the cartridge is used, even if the nozzle tries to deform, the overhang prevents this, and even if the front wall tries to bulge, the overhang prevents this. It can prevent the contents from leaking between the nozzle connecting cylinder and the nozzle,
It is possible to prevent the nozzle from falling off from the nozzle connecting cylinder.

[Brief explanation of the drawing]

Figures 1 to 5 show examples of this invention. Figure 1 is a vertical cross-sectional view of the main part of the first embodiment, Figure 2 is a vertical vertical cross-sectional view of the main part of the second embodiment, and Figure 3 is a vertical cross-sectional view of the main part of the second embodiment. 4 is a perspective view of a nozzle, FIG. 5 is a perspective view showing a modified example of the nozzle, and FIG. 6 is a perspective view showing another modified example of the nozzle. Figure 7~
Fig. 9 shows a conventional cartridge, Fig. 7 is a sectional view of the cartridge, Fig. 8 is a perspective view showing the cartridge attached to a gun, and Fig. 9 is a sectional view of essential parts showing the cartridge in use. It is. 11... Cartridge body, 12... Nozzle,
22...Front wall, 23...Discharge hole, 24...Nozzle connecting cylinder part, 33...Protrusion part, G...Cartridge gun, S...Stopper.

Claims (1)

[Claims for Utility Model Registration] A cartridge main body 11 in which a forwardly protruding nozzle connecting cylinder part 24 is provided at the edge of the discharge hole 23 of the front wall 22, and a nozzle in which the base part is fitted over the nozzle connecting cylinder part 24. 12, and is fixedly held in the cartridge gun G with the front end of the cartridge main body 11 in contact with the distal end stopper S of the cartridge gun G. Section 33 is
A cartridge characterized in that it is provided so that it can be held between a front wall 22 and a stopper S.