Cartridge type ejector

Abstract

 Disclosed is a cartridge type ejector comprising a cartridge, a case and a cap, in which the case and cap can be used repeatedly only by exchanging an empty cartridge with a full cartridge. An exposure portion for exposing a part of the cartridge is formed on the case, and the content in the cartridge can be ejected by pressing the cartridge through this exposure portion. By attaching a pin to the interior of the cap, the operation of opening the top end of the cartridge can be performed within the cap. A window for observing this operation is formed on the cap.

Description

Background of the Invention

(1) Field of the Invention

[0001] The present invention relates to a cartridge type ejector which is used for ejecting an appropriate amount of a content such as an adhesive while holding it by the hand.

(2) Description of the Prior Art

[0002] At the present time, a so-called instant adhesive is filled in a thick plastic vessel and this vessel is contained in a case and marketed. This container case ist for protecting an adhesive-filled plastic vessel from the sun light, moisture, pressure and the like. When the adhesive is used, the top end of the plastic vessel is- holed by a pin and the plastic vessel is pressed by the fingers to eject the content. In this case, it is apprehended that when the top end of the vessel is holed by a pin, the content will be scattered, and a certain content will impair the bodylo_r clothing. Furthermore, since there is not a cap for sealing the plastic vessel after using, the content is stuck and hardened in the vicinity of the vent of the vessel, and when the content is used again, a pin should be inserted to form a vent again, and this operation is very troublesome. Accordingly, it often happens that the vessel is thrown away before all the content is used. Furthermore, the container case is thrown away together with the plastic vessel. Accordingly, the conventional vessel of the above-mentioned type is not preferred from the economical viewpoint.

Summary of the Invention

[0003] It is therefore a primary object of the present invention to provide a cartridge type ejector in which scattering of a content is completely prevented when a cartridge is holed and which can be used cleanly and safely.

[0004] Another object of the present invention is to provide an economically advantageous cartridge type ejector in which a container case for a cartridge can be used repeatedly, adhesion or hardening of a content at the vent after use of the content can be prevented and the content can be used without any waste.

[0005] Still another object of the present invention is to provide a cartridge type ejector which has a simple structure and can be easily handled by any person.

[0006] Other and further objects, features and advantages of the invention will appear more fully from the following description.

Brief Description of the Drawings

[0007] 

Fig.1 is a view showing the longitudinal section of one embodiment of the present invention.

Fig.2 is a perspective view showing an example of a cap.

Figs.3A and 3B are perspective views shcwing examples of an opening-closing mechanism for an exposure portion.

Fig.4 is a view showing the longitudinal section of another embodiment of the present invention.

Fig.5 is a front view showing the embodiment of Fig.4 in the state where a cap is taken off.

Fig.6 is a partially sectional view showing another example of the cap.

Figs.7A and 7B are views showing modifications of a cartridge.

Fig.8 is a view showing another modification of the cartridge.

Figs.9 and 10 are longitudinally sectional views showing embodiments in which a cartridge provided with a bellows portion is used.

Detailed Description of the Invention

[0008] A most preferred embodiment of the present invention is illustrated in Fig.1. Referring to Fig.1, a case 1 is composed of a plastic material and has a cylindrical shape, and the case 1 has an end cap 2 dismountably attached to the rear end thereof. A cartridge 3 is inserted into the case 1 after taking off the end cap 2 so that the top end of the cartridge 3 is projected from the case 1 . An exposure portion 4 for exposing the cartridge 3 is formed on one or two parts in the front portion of the case 1 .

[0009] It is preferred that this exposure portion 4 be optionally opened and closed. For example, a cylindrical slide cover 5 slidable along the case 1 is fitted on the easel. If the exposure portion 4 is formed on one part, provision of a semi-cylindrical slide cover 6 as shown in Fig. 3A is sufficient. In this case, a guide lip 7 is projected on the side wall of the case 1 so that the slide cover 6 is moved along this guide lip 7. Furthermore, there may be adopted a method in which, as shown in Fig. 3B, a rotary cover 8 having an opening is rotated to open and close the exposure portion 4. Moreover, there may be adopted a method in which a stretchable bellows cover is arranged so that when the cover is stretched, the exposure portion 4 is covered and when the cover is contracted, the exposure portion 4 is exposed, though this modification is not illustrated in the drawings. A cap 9 is fixed to the top end portion of the case 1 by fitting or screwing. A pin 10 for piercing the top end of the cartridge 3 is arranged in the cap 9. The pin 10 may be directly fixed to the interior of the cap 9 or fixed to a pin member 11 capable of advancing in the cap 9. It is preferred that a scraper plate 12 having a fine hole for insertion of the pin 10 at the center and a supporting plate 13 having a through hole for insertion of the top end portion of the cartridge 3 at the center be arranged within the cap 9. If the scraper plate 12 is arranged, by drawing out the pin 10 from the scraper plate 12, the solid substance adhering to the pin 10 can be scraped out when the top end of the cartridge 3 is holed. If the supporting plate 13 is arranged, the top end of the cartridge 3 can be guided assuredly to the pin point. Ordinarily, a window 14 for seeing the top end portion of the cartridge 3 is formed on the cap 9, whereby the holing operation by the pin 10 can be performed assuredly and easily. Moreover, there may be adopted a modification in which the cap 9 is prolonged so that the cap 9 covers the case 1 and the exposure portion 4 is opened and closed by the cap 9 (see Figs. 4 and 5). Moreover, the cap 9 is integrated with the case and especial provision of the case is omitted (see Fig.6). In this modification, the entire cartridge 3 is thick and rigid, and only the thickness of a pressing portion 15 is reduced. Fig. 8 shows a modification of the cartridge 3, in which a ridge portion 16 is formed on the side face and this ridge portion 16 is depressed when the content is ejected. Fig. 9 shows an embodiment using a cartridge 3 provided with a bellows portion 17, in which the case 1 comprises tw*ortions which are fitted to each other. A piston 18 is contained in the rear portion of the case 1 so that the piston 18 can be moved back and forth. It is preferred that a stopper 19 be arranged on the rear end of the case 1 to prevent fall-out of the piston 18. A finger peg 2C may be formed according to need. Also in an embodiment shown in Fig. 10, a cartridge 3 having a bellows portion 17 is used.In this embodiment, a projection 21 is formed on the inner face of the case 1 and the bellows portion 17 is hung and fixed onto this projection 21. The cap 9 is put on the easel.

[0010] The operation of the cartridge type ejector having the above- mentioned structure will now be described. If in the state shown in Fig.1 the pin member 11 is advanced in the cap 9, the pin 10 reaches the top end of the cartridge3 and gradually thrusts against the top end of the cartridge 3 to form a hole at the top end of the cartridge 3. When the content is ejected, the cap 9 is taken off from the case 1 and the slide cover 5 is retreated to expose the exposure portion4. The thumb and forefinger are placed on the exposure portion 4 and the case 1 is held in such a manner as a pen is held by the fingers, and the exposure portion 4 is pressed to eject the content. After using, the cap 9 is put on the case 1 and the top end of the pin 10 is inserted into the cartridge 3. Accordingly, the content is prevented from being solidified in the vicinity of the top end vent of the cartridge 3 and clogging the cent, and when the content is used again, the content is immediately ejected. Furthermore, if the exposure portion 4 is closed by moving the slide cover 5 after using, unintentional pressing of the exposure portion 4 and subsequent overflowing of the content can be prevented. In the embodiment illustrated in Figs. 4 and 5, the operation is carried out in the same manner as described above. When cartridge 3 as shown in Figs. 7A and 7B are used, the thin pressing portion 15 is pressed, and in the case of the cartridge 3 shown in Fig. 8, the ridge portion 16 is depressed. In the embodiment shown in Fig.9, the finger is placed on the finger peg 20 and the case 1 is held in the hand, and the piston 18 is pressed by the palm. In the embodiment shown in Fig.10, the case 1 is held in the hand and the finger tip is placed on the head face 22 of the cartridge 3 and pulled back.

Claims

t. A cartridge type ejector comprising a cartridge filled with an adhesive or the like, a case for containing the cartridge therein and a cap attached to the top end portion of the case, wherein an exposure portion for exposing the cartridge is formed on the case of that the content is ejected by pressing the cartridge through the exposure portion, and the cap is provided with a pin for piercing the top end of the cartridge.

2. A cartridge type ejector as set forth in claim 1, wherein the exposure portion is optionally ppenable and closable.

3. A cartridge type ejector as set forth in claim 2, wherein the exposure portion is opened and closed by a cylindrical or a semi-cylindrical slide cover sliding along the case or by a rotary cover rotating relatively to the case.

4. A cartridge type ejector as set forth in claim 2, wherein the exposure portion is opened and closed by the cap.

5. A cartridge type ejector as set forth in claiml, wherein a window for seeing the top end portion of the cartridge is formed on the side face of the cap.

6. A cartridge type ejector as set forth in claim 1, wherein a scraper plate for scraping out solids adhering to the pin is formed in the cap.

7. A cartridge type ejecotr as set forth in claim 1, wherein the case is integrated with the cap.

8. A cartridge type ejector comprising a cartridge having a bellows portion formed at a part thereof and a case for containing the cartridge therein, wherein a content is ejected by pressing all or the rear end of the cartridge directly or through the case.

9. A cartridge type ejector comprising a cartridge having an increased thickness except a pressing portion and a cap to be attached to the cartridge, wherein the cap is provided with a pin member for piercing the top end of the cartridge.

10. A cartridge type ejector as set forth in claim 9, wherein a window for seeing the top end portion of the cartridge is formed on the side face of the cap.

Drawing