JPH0725258Y2 - Extruder - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) A push forward force is applied to a chuck in a closed state by a rearward elastic urging force to expand the chuck, thereby advancing the rod-shaped body gripped by the chuck. Then, by advancing this rod-shaped body,
The present invention relates to an extruding tool configured to extrude a coating material arranged in front of the rod-shaped body to a coating destination. As an example of the application fee,
Cosmetics such as foundation, eye shadow, lip color, writings such as crayons, passes, inks and inks,
Examples include machine oils, pastes, chemicals, seasonings and the like.

(Prior Art) An example of the above-described extrusion tool is disclosed in Japanese Patent Publication No. 57-50483. The cosmetic container is described in claim 1 as follows: "A has a push head projecting from the rear end of the barrel, and is pushed by a knock mechanism fixed in the barrel. A mechanical part container having a bar; B, a core tube detachably fitted to the front end of the mechanical part container, and a core tube slidably inserted in the core tube and holding a core-like cosmetic material at the front end part; A cartridge-type core-shaped cosmetic container, characterized in that the rear part is composed of a cartridge part composed of a core chuck having a claw piece having sliding resistance with respect to the core cylinder. "

(Problems to be Solved by the Invention) Although not limited to the above-mentioned publication, the above-mentioned publication has a structure in which the shaft is divided into a plurality of parts such as the mechanism container and the cartridge portion, and these are assembled and used. There is a possibility that the shafts may be separated from each other by the forward force applied during the operation of extruding the coating material, such as the advance of the core cosmetic material in the publication. Further, in the present invention, the member for applying a pushing force to the coating material, which is expressed as a rod-shaped body, requires precision in the movement direction, but for that purpose, the precision of assembly of the shafts is required.

(Means for Solving the Problem) A shaft (I) for containing a coating material and a shaft (I for containing a chuck
I) as a separate body, the rear part of the shaft (I) is inserted and attached to the outside of the front part of the shaft (II), and the tip part of the shaft (II) is tapered outer wall that reduces its diameter toward the front. And the wall portion of the hole provided in the rear portion of the shaft (I) that allows the rod-shaped body to move forward is brought into contact with the tapered outer wall surface of the tip portion of the shaft (II). That is, according to the present invention, a pressing forward force is applied to the chuck in a closed state by a backward elastic urging force to expand the chuck, and thereby the rod-shaped body held by the chuck is moved forward. An extruding tool for extruding a coating material arranged in front of the rod-shaped body to a coating destination, wherein a shaft (I) for accommodating the coating material and a shaft (II) for accommodating the chuck are separated from each other. The rear part of (I) is inserted outside the front part of the shaft (II), and the front end part of the shaft (II) has a tapered outer wall whose diameter decreases toward the front.
The gist of the present invention is an extruder, in which the wall portion of the hole provided in the shaft (I) that allows the rod body to move forward is brought into contact with the tapered outer wall surface of the tip portion of the shaft (II).

(Example) An example is shown in attached FIGS. 1-a and 1-b. Reference numerals 1 and 2 are the axis (I) and the axis (II) of this example, respectively.
In the following, the axis (I) is called the "front axis" and the axis (II) is called the "rear axis".

First, the front shaft 1 has a straight front hole 3 on the front side. A coating material 4 that is drawn with the attention paid to solid cosmetics such as lip color
The support member 5 is attached to the rear end of the coating material 4. The support member 5 corresponds to a piston when the front hole 3 of the front shaft 1 is a cylinder, and in the illustrated state, the rear end is in contact with the rear wall 6 of the front hole 3. The rear portion of the rear wall 6 is a tapered wall portion 7 that widens rearward, and the wall surface of the tapered wall portion 7 is formed with an appropriate number of protrusions 8 having an appropriate shape such as a circumferential shape. A straight rear hole 9 is formed further rearward of the tapered wall portion 7.

On the other hand, the rear shaft 2 projects the knock body 10 from the rear end. A housing 12 of a rod-shaped body 11 is attached to the front side of the knock body 10, and an elastic body 13 for urging the housing 12 backward is arranged on the front outer peripheral portion of the housing 12. A chuck 14 is fixed to the tip. Although the chuck 14 of this example is designed to receive the tightening force by the ring body 15, the advance mechanism of the rod-shaped body 11 by repeating the operation of pressing the knock body 10 forward is well known in general mechanical pencils. Therefore, description of the arrangement of the ring body 15 is omitted. Further, reference numeral 16 is a front body screwed to the tip of the rear shaft 2, and the front body 16 has an elastic body 17 fixed therein for imparting stability to the advance of the rod-shaped body 11. , Has a tapered outer wall whose diameter decreases toward the front.

The front portion of the rear shaft 2 is inserted into the rear hole 9 in the rear portion of the front shaft 1 that forms the above-mentioned respective component relationships, and the projection 8 of the tapered wall portion 7 contacts the tapered outer wall of the front body 16. Touching. Therefore, the front shaft 1 and the rear shaft 2 are prevented from rattling at the front insertion portion of the rear shaft 2 and rattling at the position where the projection 8 abuts on the tapered outer wall. It is prevented and inserted. Here, the rear hole 9 of the front shaft 1 and the front portion of the rear shaft 2 have a contact force that gradually increases at the open end of the rear hole 9 of the front shaft 1 as the insertion proceeds. This is because it is better to prevent backlash as far as possible. Of course, concave and convex fitting which is not removable or the use of an adhesive may be performed. In addition, the apex due to the protrusion 8 of the tapered wall portion 7
The contact of 16 with the tapered outer wall is expected to show the elasticity of the parts by reducing the contact area, and the front shaft 1 and the front body 16 are often made of polyethylene, polypropylene, nylon, polyacetal, This is because it is obtained as an injection molded product of a synthetic resin such as polycarbonate. Reference numeral 18 is a cap.

Next, another example is shown in FIG. In the present example, the tapered wall portion 7 is brought into planar contact with the tapered outer wall of the front body 16 without forming the projection 8 of the tapered wall portion 7 of the front shaft 1 in the previous example. Although the elasticity of the projection 8 cannot be expected, the projection 8 is a front body when the front shaft 1 and the rear shaft 2 are assembled.
There is no fear of disturbing the insertion of the rod-shaped body 11 protruding from the 16 or the front body 16. Of course, when the front shaft 1 and the rear shaft 2 are assembled, even if the rod-shaped body 11 is simply a linear body, the front body 16
It can be located inside, or the amount of contact between the tapered wall portion 7 and the tapered outer wall of the front body 16 can be changed by changing the screwing amount of the front body 16 with respect to the rear shaft 2. You can also

In addition to the above, various changes can be made without departing from the scope of the invention. For example, the supporting member 5 is present in the above-mentioned example in order to improve the sliding stability, and has the shape shown in the enlarged view in FIG. As shown in FIG. 4, it may be formed in any other suitable shape (in FIGS. 3 and 4, the upper side of the drawings is the coating material side, and the lower side is the rod-shaped body side. ),Also,
The application destination may have a brush tip or the like,
The chuck 14 may also be another appropriate one such as a ball chuck, and the taper shape formed at various portions does not have to be linear, and the front hole 3 and the rear hole 9 are not straight. As described above, it may be one having a taper at the time of injection molding or the like, and the appropriate parts may be appropriately integrated or pluralized. It is also possible to integrally form the rear shaft 2 and the container 12 and the chuck 14,
The extrusion of the coating material may be performed by a rotary feeding mechanism or the like.

(Effect of the Invention) In the pushing tool of the present invention, the rear part of the shaft (I) is inserted outside the front part of the shaft (II), and the tip part of the shaft (II) is reduced in diameter toward the front. And a wall portion of a hole provided in the shaft (I) for allowing the rod-shaped body to move forward is brought into contact with the tapered outer wall surface of the tip portion of the shaft (II). Therefore, at the time of operation, it is possible to operate the shaft (II) while gripping the shaft (I), so that the shafts are separated from each other by the forward force applied when the coating material is extruded. There is no fear of occurrence, and since rattling can be prevented at a plurality of points, the assembly accuracy is high and the movement of the rod-shaped body can be made smooth.

[Brief description of drawings]

FIG. 1-a is a sectional view showing a front half of an example of the present invention,
FIG. 2B is a sectional view showing the latter half of the same, FIG. 2 is a sectional view showing the principal part of another example, and FIGS. 3 and 4 are perspective views showing examples of the shape of the support member. 1 ... Axis (I) (front axis), 2 ... Axis (II) (rear axis), 3
... front hole, 4 coating material, 5 support member, 6 rear wall, 7 taper wall, 8 protrusion, 9 rear hole, 10
...... Knock body, 11 …… rod body, 12 …… container, 13 …… repellent body, 14 …… chuck, 15 …… ring body, 16 …… front body,
17 ... elastic body, 18 ... cap.

Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location B43K 23/016 B65D 83/00

Claims (1)

[Scope of utility model registration request] 1. A backward elastically urging force imparts a pressing forward force to the chuck in a closed state to expand the chuck, thereby advancing the rod-shaped body gripped by the chuck and advancing the rod-shaped body. An extruding tool for extruding a coating material arranged in front of the rod-shaped body to a coating destination, wherein a shaft (I) for accommodating the coating material and a shaft (II) for accommodating the chuck are separated, and the shaft ( Insert the rear part of I) on the outside of the front part of the shaft (II),
In addition, the tip of the shaft (II) has a tapered outer wall whose diameter decreases toward the front, and the wall of the hole provided in the shaft (I) for advancing the rod-shaped body is An extruding tool which is brought into contact with the tapered outer wall surface of the tip portion of (II).