JPH0441981Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention advances a piston that is slidably arranged in a fluid storage chamber in a shaft cylinder, and the piston moves the fluid stored in the fluid storage chamber into the shaft. The present invention relates to an applicator that can be supplied to an applicator at the tip of a cylinder.

(Prior art and its problems) As an applicator related to the above,
As disclosed in the above publication, by rotating the front shaft and the rotatable rear shaft, a threaded rod that rotates at the same time as the rear shaft and is slidable is advanced along the screw hole of the front shaft. It is known that a piston at the tip of the screw rod presses fluid stored in the front shaft and supplies it to the pen tip at the tip of the front shaft.

However, although the structure described above has the advantage that even if the stored fluid is a highly viscous liquid, the fluid can be pressed by the piston and reliably supplied to the pen tip, it is difficult to supply the fluid to the pen tip during use. , the rear shaft must be rotated relative to the front shaft,
In addition to having to change the grip of the shaft cylinder each time and operating it with both hands, it is troublesome to adjust the amount of fluid supplied by rotating the rear shaft.

(Purpose of the invention) The present invention was devised in view of the above-mentioned problems, and the piston, which is slidably arranged in the fluid storage chamber in the barrel, can be moved by simply pressing the operation knob provided on the barrel with a fingertip. It is an object of the present invention to provide an applicator with excellent operability, which can be moved forward with a simple operation and can supply fluid stored in a fluid storage chamber with the piston to an applicator at the tip of a barrel.

(Structure of the invention) The present invention provides an applicator at the tip of the barrel, a piston that is slidably provided in a fluid storage chamber in the barrel that communicates with the applicator, and a screw rod that can move forward by pressing the piston. is fixedly arranged at a predetermined position in the shaft cylinder and is slidably fitted in the detent hole of the annular body only in the longitudinal direction, and is further disposed rearward from the annular body and whose movement in the direction of the application section is regulated. The engagement piece of the operating knob disposed on the shaft cylinder is engaged with the claw of the ratchet wheel, and the ratchet wheel is rotated by pressing down the operating knob. The gist of the applicator is that the screw rod screwed into the ratchet wheel is moved forward along the detent hole so that the stored liquid can be supplied to the applicator section using the piston at the front.

(Description of Embodiments) Hereinafter, embodiments of the present invention will be described based on the drawings. In FIGS. 1 to 4, reference numeral 1 denotes an applicator provided at the tip of the barrel 2, and in the drawings, a fluid storage chamber 5 containing a pen tip 3 made of an elastic porous material, a fiber convergence material, etc. will be described later. Although the application part 1 is exemplified as a part that is fitted and fixed to the pipe part 4 that communicates with the pipe part 4,
The application section 1 can be modified in various ways depending on the type of fluid used, such as having only the pipe section 4 or having an opening at the tip of the shaft tube 2. Reference numeral 5 denotes a fluid storage chamber provided within the barrel 2, and liquids and powders for cosmetics, writing, etc. are stored in the fluid storage chamber 5. A piston 6 is slidably provided in the fluid storage chamber 5. Reference numeral 7 denotes a screw rod capable of pushing the piston 6 forward, and the screw rod 7 has threads on its outer surface and a notch 8 in the longitudinal direction giving it an irregular cross-section. Reference numeral 9 denotes an annular body fixed at a predetermined position within the shaft cylinder 2, and the threaded rod 7 is slidably fitted into a rotation stopper hole 10 provided in the center of the annular body 9 while being restricted from rotating. are combined. Reference numeral 11 denotes a ratchet wheel which is disposed behind the detent hole 10 and whose movement toward the application section is restricted, and which screws the screw hole 12 into the screw rod 7. That is, when the ratchet wheel 11 is rotated, the ratchet wheel 1
The screw rod 7 to be screwed into the screw rod 1 can be moved forward along the detent hole 10. 13 exposes the pressing part 15 from the hole 14 on the side surface of the shaft cylinder 2, and
It is an operation knob whose rear end 16 is fixed to the rear end of the shaft cylinder 2, and which can be pressed down with a fingertip and returned elastically;
The operating knob 13 has an engaging piece 18 on the front portion that can be elastically moved laterally and engages with the pawl 17 of the ratchet wheel 11. Reference numeral 19 denotes a screw rod receiver having an arcuate cross section formed in the annular body 9 through the space in which the ratchet wheel 11 is disposed, and 20 a screw rod receiver that elastically engages with the pawl 17 of the ratchet wheel 11 to prevent the ratchet wheel 11 from reversing. It is an elastic piece.

(Function) The fluid supply operation of the above-mentioned embodiment will now be described with reference to FIG. 5.

When the pressing part 15 of the operating knob 13 is pressed down with a fingertip, the operating knob 15 engages with the pawl 17 of the ratchet wheel 11.
Although the engaging piece 18 is deformed outward, it can follow the pawl 17 and give rotation to the ratchet wheel, so the screw rod 7 that is screwed onto the ratchet wheel 11 is advanced along the detent hole 10. The stored fluid can be pressurized by the front piston 6 and supplied to the applicator 1. If the pressing of the pressing part 15 is released here, the operating knob 13 and the engaging piece 18 return by their own elasticity, and the engaging piece 1
8 can be placed in a position where it engages with the next pawl 16. Therefore, by further pressing down the pressing part 15, the pawl wheel 1
Fluid can be continuously supplied to the applicator 1 by rotating the piston 6 and moving forward.

In the above-mentioned fluid supply operation, when the engaging piece 18 returns to the desired position, the ratchet wheel 11 may be taken with it. 20 is preferably elastically engaged with the pawl 17. Furthermore, if the downward stroke of the pressing portion 14 of the operating knob 13 is restricted by the inner surface of the shaft cylinder 2 or a part of the annular body 9, damage to the threads due to direct contact of the operating knob 13 with the threaded rod 7 can be avoided. It can be prevented.

In the above-mentioned embodiment, the operation knob 13 and the engagement piece 18 are shown as being able to return to their original positions with their own elasticity, but it is also possible to use other elastic elements such as springs to give them return elasticity. You may also do so.

(Effects of the invention) As described above, according to the invention, by pushing down the operating knob provided on the shaft cylinder, the engaging piece of the operating knob rotates the ratchet wheel by an amount corresponding to one pawl. The screw rod that is screwed onto the ratchet wheel can be moved forward along the detent hole, and the piston at the front can supply the stored fluid to the application section, making it extremely easy and reliable to supply the stored fluid to the application section. Therefore, it is possible to provide an applicator with excellent operability.

It should be noted that the present invention is not limited to the illustrated embodiment; for example, the number of pawls of the ratchet wheel, the shape of the operating knob, etc. can be changed in various ways without departing from the spirit of the invention.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a longitudinal sectional view, FIG. 2 is an enlarged perspective view showing the annular body and ratchet wheel in FIG. 1, and FIG. 4 is an enlarged perspective view of the operating knob in FIG. 1, and FIG. 5 is a longitudinal sectional view taken along the line AA in FIG. 1. DESCRIPTION OF SYMBOLS 1... Application part, 2... Shaft cylinder, 5... Fluid storage chamber, 6... Piston, 7... Screw rod, 9... Annular body, 10... Rotating hole, 11... Ratchet wheel, 12 …
...Screw hole, 13...Operation knob, 16...Rear end,
17...Claws.

Claims (1)

[Scope of utility model registration request] An applicator 1 is provided at the tip of the barrel 2, a piston 6 is slidably provided in a fluid storage chamber 5 in the barrel 2 that communicates with the applicator 1, and a screw rod 7 is provided that can push the piston 6 forward. It is fixedly arranged at a predetermined position in the shaft cylinder 2 and is slidably fitted in the detent hole 10 of the annular body 9 only in the longitudinal direction, and is further arranged rearward from the annular body 9 to prevent movement in the direction of the application part 1. Multiple regulated claws 1
7 is screwed into the screw hole 12 of the ratchet wheel 11, and the engaging piece 18 of the operating knob 13 disposed on the shaft cylinder 2 is engaged with the pawl 17 of the ratchet wheel 11.
The ratchet wheel 11 is rotated by pressing down the ratchet wheel 11.
Advance the screw rod 7 to be screwed into the stopper hole 10 to apply the stored liquid to the application section 1 using the piston 6 at the front.
An applicator that can be supplied to