JPH0352136Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an applicator that can extrude and apply contents in fixed amounts at a time.

[Conventional technology]

Conventionally, applicators that can extrude and apply a certain amount of contents have been known as described in Japanese Utility Model Publication No. 55-49576, Japanese Utility Model Application Publication No. 55-145484, and the like.

What is described in Utility Model Publication No. 55-49576 is
As shown in FIG. 4, by pushing the push button 56, the piston 11 is pushed through the coil spring 55 and the push rod 12, and the leaf spring 61 provided at the base end of the push rod 12 overcomes the stopper 62 and moves forward one pitch. Then, it stops at the next stopper 62, and the contents in the cylinder 1 are extruded from the extrusion port 3 in fixed amounts at a time.

Furthermore, as shown in FIG. 5, the system described in Japanese Utility Model Application Publication No. 55-145484 pushes out the contents inside the cylinder 1 from the extrusion port 3 at the tip of the cylinder 1 by pushing the piston 11 with a push button 56. The push button 56 is inserted into the cylinder 1 from the bearing tube 63 at the base end of the cylinder 1 and the piston 11
A plurality of ridges 33 are provided on the circumferential surface of this depression tube 64 with an inclined surface 31 on the piston 11 side and a vertical surface 32 on the opposite side, and a plurality of ridges 33 are provided on the inner periphery of the base end of the bearing tube 63. A claw part 52 is provided which engages between 33, and each time a push button 56 is pressed, the claw part 52 climbs over one mountain 33 and pushes out the contents one pitch at a time.

[Problem that the invention attempts to solve]

However, the device described in Japanese Utility Model Publication No. 55-49576 is good at the beginning of use, but when the contents become low and the piston 11 and push rod 12 move forward, the push rod 12 Coil spring 5 interposed between push button 56
5 becomes too stretched, its biasing force becomes weak, and the force for pushing the push button 56 is absorbed by the coil spring 55, and even if the push button 56 is pushed, the push rod 12 and piston 11 are not pushed, and the contents are pushed out. There are some things that I can't do.

In addition, in the device described in Japanese Utility Model Publication No. 55-145484, by pressing the push button 56, the push tube 64
is pushed into cylinder 1, so the overall length becomes shorter as it is used repeatedly.
There is a problem that it becomes difficult to hold and use.

The present invention was devised in view of these problems, and the technical problem is to provide an applicator that can reliably extrude the contents and does not shorten the overall length.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides an applicator 6 at the tip of the cylinder 1, and also provides a piston 11 slidably inside the cylinder 1, and applies the contents inside the cylinder 1 with the piston 11. The following technical measures were taken in the applicator that extrudes and applies to the portion 6.

That is, the cylinder 1 is located at the base end of the cylinder 1.
At the same time, a cylindrical body 21 which becomes an elongated rod-shaped cylinder is arranged in series. A push rod 12 for pushing the piston 11 is provided within the cylinder 21, and a plurality of ridges 33 are provided on the circumferential surface of the push rod 12, with an inclined surface 31a on the piston 11 side and a vertical surface 32a on the opposite side.

An inner cylinder 51 is slidably provided between the push rod 12 and the cylinder body 21. A claw portion 5 is formed on the inner periphery of the tip of this inner cylinder 51, the surface on the piston 11 side is a vertical surface 32c, and the surface on the opposite side is an inclined surface 31c.
Further, a stopper 42 for locking the push rod 12 pushed into the cylinder 1 at that position is provided inside the cylinder 21 or inside the cylinder 1.

Further, a coil spring 55 is provided between the inner cylinder 51 and the cylinder body 21 for urging the inner cylinder 51 toward the base end of the cylinder body 21, and the coil spring 55 is provided at the base end of the cylinder body 21. A push button 56 for pushing the inner cylinder 51 against the urging force of is provided to form an applicator.

[Effect]

When the push button 56 is pressed, the inner cylinder 51 is pushed, the claw portion 52 pushes the vertical surface 32a of the mountain 33, and the push rod 12 is pushed.
, the contents are pushed out by the piston 11. Then, when the push button 56 is released,
The inner cylinder 51 returns to its original position due to the biasing force of the coil spring 55. At this time, the push rod 12 does not move because it is locked to the stopper 42, and the claw portion 52 climbs over the peak 33 of the push rod 12. By repeating this process, the push rod 12 is pushed one pitch at a time, and the contents are pushed out a certain amount at a time.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

A coating plug 2 is provided at the tip of the cylinder 1, and a hole 3 is bored in the coating plug 2.
A guide tube 5 forming an extrusion port 4 is inserted into the applicator plug 2, and a brush serving as an applicator 6 is provided in the applicator plug 2 so as to enclose the guide tube 5 therein. and,
This brush is protected by a cap 7 that fits onto the applicator stopper 2.

Further, a piston 11 is slidably provided in the cylinder 1, and an insertion hole 13 for inserting a push rod 12 is bored at the base end of the cylinder 1, and a cylinder 21 is connected to the piston 11. Connection tube 1 for
4 is provided.

A cylindrical body 2 that has the same outer diameter as the cylinder 1 and becomes an elongated rod-shaped cylinder together with the cylinder 1 is attached to this connecting cylinder 14.
1 is fitted onto the outside, and a buttonhole 22 is bored at the base end of this cylindrical body 21.

Further, the push rod 12 is provided in the cylinder 21, the tip of which is inserted into the cylinder 1 through the insertion hole 13 and connected to the piston 11 with a connecting tool 23, so that the push rod 12 moves in conjunction with the piston 11. . This push rod 12 has a piston 11 connected to the cylinder 1.
The push rod 12 has a length such that the base end of the push rod 12 is located at the base end of the cylindrical body 21 when the push rod 12 is located at the base end of the cylinder 21 . Also, on the circumferential surface of the push rod 12, when the axis of the push rod 12 is taken as a reference, the piston 11 side has an inclined surface 31a.
A plurality of peaks 33 are arranged in series, and the opposite side thereof is formed as a vertical surface 32a.

Further, the push rod 12 is placed on the connecting cylinder 14 and
It has a through hole 41 that penetrates the
The push rod 12 inside the through hole 41 is attached to the inner surface of the through hole 41.
A locking pawl 4 as a stopper that engages between the ridges 33 of
A circular base plate 43 is provided, and the locking pawl 42 of this base plate 43 has a vertical surface 32b on the side facing the piston 11 and an inclined surface 31b on the opposite side. Furthermore, an arcuate slit 44 is provided on the base plate 43 in order to impart elasticity to the locking pawl 42.

Further, an inner cylinder 51 is slidably inserted between the push rod 12 and the cylinder 21, and a claw portion 52 that engages and hooks between the plurality of ridges 33 is provided on the inner periphery of the tip of the inner cylinder 51. The claw portion 52 has a vertical surface 32c on the piston 11 side and an inclined surface 31c on the opposite side. Furthermore, a flange 53 is formed on the outer periphery of the base end of the inner cylinder 51.

A coil spring 55 is stretched between the flange 53 and the base plate 43 and biases the inner cylinder 51 toward the proximal end of the cylinder 21.
1.

Furthermore, the inner cylinder 51 is inserted into the piston 11 against the biasing force of the coil spring 55 inside the base end of the cylinder body 21.
A push button 56 is provided for pushing to the side, and a portion of this push button 56 projects outward from the button hole 22.

A distance l for the sliding stroke of the inner cylinder 51 is formed between the tip of the inner cylinder 51 and the base plate 43, and the push button 56 is moved by the coil spring 55.
When pushed against this, the inner cylinder 51 is pushed in by this distance l, the claw portion 52 pushes the vertical surface 32a of the ridge 33, and the ridge 33 of the push rod 12 climbs over the locking claw 42 of the base plate 43, and the push rod 12 is pushed in. It is pushed into the cylinder 1, pushes the piston 11, and pushes out the contents such as cosmetics in the cylinder 1 into the guide tube 4, and the application part 6
supply to.

Thereafter, when the push button 56 is released, the inner cylinder 51 is pushed back toward the base end side of the cylinder body 21 by the coil spring 55, but at this time, the vertical surface 32a of the crest 33 32b, the push rod 12 is locked in that position, and the inner cylinder 5
The claw portion 52 of No. 1 climbs over the mountain 33, and only the inner cylinder 51 and push button 56 return to their original positions.

By repeating this, the contents in the cylinder 1 are reliably pushed out one pitch at a time from the piston 11 and supplied to the application section 6. This pitch is determined by the interval l formed between the tip of the inner cylinder 51 and the base plate 43 for the sliding stroke of the inner cylinder 51, and with this one pitch, the peak 33 located at this stroke interval l is will overcome.

Note that the locking pawl 42 as a stopper is connected to the connecting cylinder 1.
4 may be formed integrally with the cylinder 1 into which the push rod 12 is inserted, and there is no need to provide the base plate 43 as in this embodiment in order to provide the stopper.
Something like a locking pawl 42 may be formed in the insertion hole 13 portion.

Further, the applicator 6 may be not only a brush, but also a brush, a sponge, etc., or may be simply an opening without providing these.

Further, the cylinder 1 and the cylindrical body 21 may be formed integrally.

[Effect of idea]

The present invention is convenient because a predetermined amount of the content can be pushed out to the application section 6 simply by pressing the push button 56.

Furthermore, since the length of the coil spring 55 is always kept constant, its biasing force is always kept constant, so that the piston 11 can always push out the contents reliably.

Furthermore, the push button 56 portion of the cylinder 1 and cylindrical body 21, which occupies the main part of the total length of the present invention, is
Unlike the one described in Japanese Patent No. 145484, it does not shorten as the contents are used, so it is always easy to hold and easy to apply.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing an embodiment of the present invention, Fig. 2 is a partially exploded perspective view of the device, Fig. 3 is an enlarged view of the push rod portion, and Fig. 4 is a half cutaway showing a conventional example. FIG. 5 is a vertical cross-sectional view of another conventional example. DESCRIPTION OF SYMBOLS 1...Cylinder, 6...Applying part, 11...Piston, 12...Push rod, 21...Cylinder body, 31a...
Inclined surface, 32a... Vertical surface, 33... Mountain, 42...
... Locking claw as a stopper, 51 ... Inner cylinder, 52
...Claw part, 55...Coil spring, 56...
push button.

Claims (1)

[Claims for Utility Model Registration] An applicator 6 is provided at the tip of the cylinder 1, and a piston 11 is slidably provided within the cylinder 1, and the piston 11 transfers the contents of the cylinder 1 to the applicator 6. In an applicator that applies by extrusion, a cylinder body 21 that forms an elongated rod-shaped cylinder together with the cylinder 1 is connected to the base end of the cylinder 1, and this cylinder body 2
1 is provided with a push rod 12 for pushing the piston 11,
The piston 11 side has an inclined surface 3 on the circumferential surface of this push rod 12.
1a, a plurality of ridges 33 having a vertical surface 32a on the opposite side are arranged in series, and an inner cylinder 5 is provided between the push rod 12 and the cylinder body 21.
1 is slidably provided, and a claw portion 52 is provided on the inner periphery of the tip of the inner cylinder 51, the surface on the piston 11 side being a vertical surface 32c, and the surface on the opposite side being an inclined surface 31c. A stopper 42 is fixedly provided within the rod-shaped cylinder made up of the cylinder 1 and the cylinder body 21 at a position below the tip of the inner cylinder 51, and the stopper 42 has a vertical surface 32b on the piston 11 side. The opposite surface thereof is formed as an inclined surface 31b, and a coil spring 55 is provided between the inner cylinder 51 and the cylinder body 21 to bias the inner cylinder 51 toward the proximal end of the cylinder body 21, Furthermore, the applicator is characterized in that a push button 56 is provided at the base end of the cylindrical body 21 for pushing the inner cylinder 51 against the biasing force of the coil spring 55.