JPH088863Y2 - Liquid applicator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a liquid applicator for applying liquid nail cosmetics and the like, and more particularly to a liquid applicator in which an inner cylinder for containing a liquid is formed into a cartridge and made replaceable. .

(Prior Art) Conventionally, at the rear end of the outer shaft accommodating the cartridge type inner cylinder, it is prevented that the inner cylinder is pulled out from the rear end opening of the outer shaft, or the rear end portion of the inner cylinder is covered to prevent external pressure. In some cases, a detachable rear shaft is connected to avoid such problems. In order to prevent the inner cylinder from coming off, it is necessary to firmly fix the rear shaft. Therefore, the rear shaft and the outer shaft have been reliably connected by a method such as screwing.

(Problems to be solved by the invention) When replacing the cartridge type inner cylinder, it is necessary to remove the rear shaft from the outer shaft, replace the inner cylinder, and then connect the rear shaft to the outer shaft again. In the above-mentioned conventional structure, the attachment / detachment operation of the rear shaft with respect to the outer shaft is extremely complicated and troublesome.

The present invention makes it extremely easy to attach and detach the outer shaft and rear shaft,
An object of the present invention is to provide a liquid applicator in which the exchange of the cartridge type inner cylinder is not troublesome.

(Means for Solving the Problems) In order to achieve the above object, the liquid applicator of the present invention comprises:
A liquid applicator having a structure in which a cartridge type inner cylinder (2) accommodating a liquid is accommodated inside the outer shaft (1) and a detachable rear shaft (3) is connected to a rear end of the outer shaft (1). In the external appearance (1), the first convex portion (4) and the second convex portion (4) are provided behind the convex portion (4).
Convex portions (5) of the inner cylinder (2) and the first convex portion (4) of the outer shaft (1) which is detachably fitted with the first convex portion (4) of the outer shaft (1) by a proper interference. And a convex portion (7) which is detachably fitted to the second convex portion (5) of the outer shaft (1) by an appropriate interference with the outer surface portion of the rear shaft (3). It is what

(Operation) The liquid applicator according to the present invention does not have the first convex portion (4) provided on the inner surface portion of the outer shaft (1) and the convex portion (6) provided on the outer surface portion of the inner cylinder (2) as appropriate. Since the inner cylinder (2) is prevented from coming off by fitting with the interference, the rear shaft (3) does not need to prevent the inner cylinder (2) from being pulled out, and the rear shaft (3)
Is sufficient if it is connected to the outer shaft (1) with a fixing force that does not cause it to fall. Therefore, the second part is formed on the inner surface of the outer shaft (1).
If the convex portion (5) of the rear shaft (3) is provided and the convex portion (7) that fits with the convex portion (5) with a proper interference is provided on the outer surface of the rear shaft (3), the rear shaft (3) can be fixed. It will be enough. By adopting such a structure, when the inner cylinder (2) and the rear shaft (3) are attached to and detached from the outer shaft (1), the inner cylinder (2)
Since the rear shaft (3) and the rear shaft (3) only have to be pushed in or pulled out, the operation becomes extremely easy.

(Example) The Example of this invention is described based on drawing.

First, the outer shaft (1) is made of resin and has a rear end opened, and the front end is integrally formed with a front shaft (in the drawing, the front shaft is concealed by the cap (8)). A first convex portion (4) in the circumferential direction perpendicular to the axis is provided on the inner surface portion of the above, and a similar second convex portion (5) is provided on the inner surface portion near the rear end. A brush (not shown) is attached to the front shaft so as to project forward, and a pipe (9) for supplying liquid to the brush is fixed to the front shaft so that it is rearward at the front end portion inside the outer shaft (1). It is arranged so as to project toward. Next, the cartridge type inner cylinder (2) accommodates liquid nail cosmetics and the like inside the inner cylinder body (10), and a valve (not shown) is attached to the front end opening of the inner cylinder body (10). A resin inner tip shaft (11) is fitted to the outer circumference of the front end of the inner cylinder body (10) so as to cover the valve, and the outer surface of the inner tip shaft (11) is circumferentially perpendicular to the axis. Is provided with a convex portion (6). The inner tip shaft (11) has an opening at the front end surface for inserting the pipe (9), and a packing (not shown) which contacts the peripheral side surface of the pipe (9) in a watertight and slidable manner inside. Is installed. The inner cylinder (2) is mounted inside the outer shaft (1) by inserting it from the rear end opening and inserting the pipe (9) into the opening of the inner tip shaft (11). In this state, the first convex portion (4) of the outer shaft (1) and the convex portion (6) of the inner cylinder (2) are detachably fitted with a proper interference, and the rear end of the pipe (9). Contacts the front end of the valve rod, which is a component of the valve, inside the inner cylinder (2). The rear end of the inner cylinder (2) projects rearward from the rear end of the outer shaft (1) by a required length. The inner cylinder (2) is slidable in the axial direction with respect to the pipe (9), and the rear end of the inner cylinder (2) is pressed forward to
The fitting between the first convex portion (4) of the outer shaft (1) and the convex portion (6) of the inner cylinder (2) is canceled, and the inner cylinder (4) is slid forward with respect to the pipe (9). Then, the valve is opened so that the valve rod that is in contact with the pipe (9) is relatively retracted, and the liquid nail cosmetic or the like of the inner cylinder body (10) passes through the valve and enters the pipe (9). It flows in and is supplied to the brush. When the pressure on the rear end of the inner cylinder (2) is released, the inner cylinder (2) retreats with respect to the pipe (9) due to the action of the valve spring which is a component of the valve, and the valve is closed again. The convex portion (6) of the outer shaft (1) is again fitted with the first convex portion (4) of the outer shaft (1). Next, the rear shaft (3) is made of resin, and the front end and the rear end are opened, and the notch (1
2), and a joint portion (13) having a reduced outer diameter for insertion into the outer shaft (1) is provided in the front half portion, and the outer surface of the joint portion (13) has a circumference perpendicular to the axial direction. Directional projections (7) are provided. The rear shaft (3) uses the first half joint (13) as the outer shaft (1).
It is fixed by inserting it from the rear end opening into the inside thereof and fitting the convex portion (7) to the second convex portion (5) of the outer shaft (1) with a proper interference. A rear portion of the rear shaft (3) with respect to the joint portion (13) covers the rear end outer peripheral portion of the inner cylinder (2) protruding rearward from the rear end of the outer shaft (1), and the rear shaft (3).
The rear end edge is located at the same position as the rear end surface of the inner cylinder (2) or behind it. This prevents the rear end surface of the inner cylinder (2) from being accidentally knocked by the rear shaft (3). However, since a part of the inner cylinder (2) is exposed at the notch (12) of the rear shaft (3), at the position of the notch (12), the inner cylinder (2) is knocked forward and as described above. Liquid nail cosmetics and the like can be supplied to the brush.

(Effect of the Invention) The present invention is as described above, and the rear shaft (3) is extremely easily attached to and detached from the outer shaft (1), and the replacement work of the cartridge type inner cylinder (2) containing the liquid is easy and quick. Can be achieved. Further, since it is only necessary to provide the outer shaft (1), the inner cylinder (2) and the rear shaft (3) with convex portions respectively, there is an advantage that manufacturing is easy.

[Brief description of drawings]

1 is a partially broken side view, FIG. 2 is a partially broken side view in a disassembled state, FIG. 3 is an enlarged sectional view of part A of FIG. 1, and FIG. 4 is FIG. 1B. It is an expanded sectional view of a part. (1) ... Outer shaft, (2) ... Inner cylinder, (3) ... Rear shaft, (4) ...
1st convex part, (5) ... 2nd convex part, (6) ... convex part,
(7) ... convex portion, (8) ... cap, (9) ... pipe,
(10)… Inner cylinder body, (11)… Inner tip shaft.

Claims (1)

[Scope of utility model registration request] 1. A cartridge-type inner cylinder (2) containing a liquid is housed inside an outer shaft (1), and a removable rear shaft (3) is connected to the rear end of the outer shaft (1). In the liquid applicator having the structure, a first protrusion (4) and a second protrusion (5) are provided on the inner surface of the outer shaft (1) and the second protrusions (5) behind the outer surface of the inner shaft (1). A convex portion (6) which is detachably fitted to the first convex portion (4) of the shaft (1) by a proper interference is provided, and the outer surface portion of the rear shaft (3) is provided with a first convex portion (4) of the outer shaft (1). 2. A liquid applicator characterized in that it is provided with a convex portion (7) which is detachably fitted to the convex portion (5) of No. 2 by an appropriate interference.