JP2004188365A - Cap for calking compound syringe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress remaining of a calking compound inside a cartridge used for sealing an aluminum sash. <P>SOLUTION: An inclined part 12 is formed at one end part of a cylindrical main body 11 and the inclined part 12 is inclined in the direction of separating from the main body 11. A projection part 13 is formed almost at the center of the inclined part 12 and the projection part 13 is provided with a cylindrical connection part 13A whose diameter is smaller than the one of the main body 11 and a conical tip part 13B is coaxial with the axial center AX of the main body 11. In the main body 11, the end part 11A on the opposite side of the inclined part 12 is opened and a cap 10 is molded hollow. On the inner wall surface of the cap 10, a fold part 14 is annularly formed along the circumferential direction of the main body 11. The fold part 14 is provided with a first wall part 15 formed at a position equivalent to the boundary part of the main body 11 and the inclined part 12 and a second wall part 16 formed near a step part formed by the inclined part 12 and the connection part 13A of the projection part 13. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cap used for an injector for caulking material such as silicon.
[0002]
[Prior art]
BACKGROUND ART Conventionally, at a construction site, in order to seal an aluminum sash, a caulking material such as silicon is injected using an instrument called a cartridge gun. The cartridge gun includes a holder in which a cylindrical cartridge filled with a caulking material is set, a rigid linear member for pushing a cap attached to one end of the cartridge into the cartridge, and a linear member. And a handle portion for operation. When the handle portion is appropriately operated, the linear member moves along the axis of the cartridge. The cap moves into the cartridge in response to the movement of the linear member, and as a result, the caulking material in the cartridge is pushed out from the tip.
[0003]
[Problems to be solved by the invention]
The cap has a cylindrical shape so as to fit into the main body of the cylindrical cartridge, and is molded so that its outer diameter is slightly smaller than the inner diameter of the cartridge. Therefore, when the cap is pushed into the inside of the cartridge, the caulking material may leak to the rear side of the cap from a slight gap between the inner wall surface of the cartridge and the outer peripheral surface of the cap. Further, the inner wall surface at the distal end of the cartridge is formed to have a smaller diameter than other portions so that a small amount of the caulking material is gradually extruded. However, as described above, since the cap is formed so as to fit into the cartridge body, even if the cap is moved to the vicinity of the tip of the cartridge via the linear member, the caulking material remains at the tip of the cartridge. Would. That is, the cartridge must be replaced even though the caulking material still remains. As described above, when the conventional cap is used, there is a problem that the caulking material remains in the cartridge and is wasted.
[0004]
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a cap capable of suppressing a residual caulking material filled in a cartridge set in a caulking material injector.
[0005]
[Means for Solving the Problems]
A cap for a caulking material injector according to the present invention includes a cylindrical main body, a projection formed on one end surface of the main body, and a first annular shape formed on the inner wall surface of the main body along the circumferential direction. Preferably, the first wall is formed on the inner wall surface of the main body at a position corresponding to a boundary between the cylindrical portion of the main body and the end face.
[0006]
Preferably, the tip of the projection is formed in a conical shape, and the projection is formed coaxially with the axis of the main body.
[0007]
Preferably, a second wall is formed on the inner wall surface of the main body in the vicinity of the step formed by the end face and the projection, and is formed in a ring shape along the circumferential direction.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a cap for a caulking material injector to which an embodiment according to the present invention is applied, and FIG. 2 is a side view of the cap. The cap 10 has a cylindrical main body 11. An inclined part 12 is formed at one end of the main body 11. The inclined portion 12 is inclined in a direction away from the main body 11. A projection 13 is formed substantially at the center of the slope 12. The protruding portion 13 has a cylindrical connecting portion 13A having a smaller diameter than the main body 11, and a conical tip portion 13B formed continuously with the connecting portion 13A. In the main body 11, an end portion 11A opposite to the inclined portion 12 is open, and the cap 10 is molded to be hollow.
[0009]
FIG. 3 is a bottom view showing the cap 10 from the end 11A side, and FIG. 4 is a sectional view taken along line IV-IV in FIG. As is clear from FIG. 3, the projection 13 is formed coaxially with the axis AX of the main body 11. The inner wall surface of the cap 10 is provided with a fold 14 formed in an annular shape along the circumferential direction of the main body 11. The fold portion 14 includes a first wall portion 15 formed at a position corresponding to a boundary portion between the main body 11 and the inclined portion 12 on the inner wall surface of the cap 10, and a connecting portion 13A between the inclined portion 12 and the projection portion 13. And a second wall 16 formed near the step to be formed. As is clear from FIG. 4, the first wall portion 15 is inclined toward the end 11A at a predetermined angle. Further, the second wall portion 16 is along the axis AX of the main body 11 and has a predetermined height.
[0010]
The cap 10 is obtained by molding a flexible material into the above shape.
[0011]
FIG. 5 is a perspective view showing the cartridge 20 to which the cap 10 is attached together with the cap 10. The cartridge 20 has a substantially cylindrical shape, and is filled with, for example, silicon. An extrusion port 21 is formed at one end 20A of the cartridge 20. The cap 10 is inserted with the projection 13 positioned inside the cartridge 20 at the end 20B opposite to the end 20A. The cartridge 20 with the cap 10 attached thereto is attached to a holder of a conventional cartridge gun, and the cap 10 is pushed into the cartridge 20 via the linear member by appropriately operating the handle of the cartridge gun. That is, the cap 10 is moved toward the extrusion port 21 in the cartridge 20. In accordance with the movement of the cap 10, the silicon in the cartridge 20 is extruded from the extrusion port 21.
[0012]
FIG. 6 is a cross-sectional view showing a state in which the cap 10 has reached the end 20A of the cartridge 20. As described above, the tip 13B of the projection 13 of the cap 10 has a conical shape. Accordingly, as shown in FIG. 6, when the cap 10 reaches the end 20A and further pushes a part of the protrusion 13 of the cap 10 to a state where the protrusion 13 is exposed from the end 20A, the silicon near the end 20A almost disappears. Extruded.
[0013]
As shown in FIG. 6, a disk 31 is formed on the side of the linear member 30 of the cartridge gun that contacts the cap 10. The diameter of the disk 31 is larger than the diameter of the circular opening defined by the end face of the first wall 15. Further, the cap 10 has flexibility as described above. Therefore, when the cap 10 is pushed into the inside of the cartridge 20, as shown in FIG. 6, the first wall portion 15 bends toward the distal end portion 13B with the opening thereof being shielded by the disk 31. As a result, the air pressure in the space sealed by the disk 31, the first wall 15, the inclined portion 12, and the protrusion 13 acts to expand the cap 10, and the step at the boundary between the inclined portion 12 and the main body 11. The cap 10 moves inside the cartridge 20 while the portion is in close contact with the inner wall surface of the cartridge 20. Therefore, when the cap 10 moves, the silicon is prevented from leaking from between the cap 10 and the cartridge 20.
[0014]
Further, by forming the second wall portion 16, the vicinity of the step formed by the connecting portion 13A of the inclined portion 12 and the protruding portion 13 is reinforced.
[0015]
As described above, according to the present embodiment, the residual silicon charged in the cartridge 20 is reduced.
[0016]
【The invention's effect】
As described above, according to the present invention, a cap for a caulking material injector that can suppress the residual caulking material filled in a cartridge set in the caulking material injector is obtained.
[Brief description of the drawings]
FIG. 1 is a perspective view of a caulking material injector cap to which an embodiment according to the present invention is applied.
FIG. 2 is a side view of a caulking material injector cap.
FIG. 3 is a bottom view of a caulking material injector cap.
FIG. 4 is a sectional view of a cap for a caulking material injector.
FIG. 5 is a side view of a caulking material injector cap and a cartridge.
FIG. 6 is a cross-sectional view showing a state where the cap has reached the end of the cartridge.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Cap 11 Main body 12 Inclined part 13 Projection part 14 Fold part 15 First wall part 16 Second wall part

Claims (5)

A cylindrical body;
A protrusion formed on one end surface of the main body,
A caulking material injector cap, comprising: a first wall portion formed in an annular shape along a circumferential direction on an inner wall surface of the main body. The cap for a caulking material injector according to claim 1, wherein a tip of the protrusion is formed in a conical shape. The cap for a caulking material injector according to claim 2, wherein the protrusion is formed coaxially with an axis of the main body. The cap for a caulking material injector according to claim 1, wherein the first wall portion is formed on an inner wall surface of the main body at a position corresponding to a boundary between a cylindrical portion of the main body and the end face. . 5. The caulking device according to claim 4, further comprising: a second wall portion formed in an annular shape along a circumferential direction in a vicinity of a step formed by the end surface and the protrusion on an inner wall surface of the main body. Injector cap.

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