JP2003191686A - Rod-like article projecting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rod-like article projecting device which eliminates unsteadiness between the rod-like article and a casing in the use of the article and suppresses unintended retraction of the rod-like article in the direction into the casing when a soft rod-like matter is used. <P>SOLUTION: The rod-like article projecting device has the casing wherein a slit and a number of parts to be engaged are formed in the axial direction and a slider which is disposed slidably in the casing. The slider is equipped with a resilient body having a part engaging with the parts to be engaged. The casing has a hole provided in at least one or more places of the tip part wherefrom the rod-like article is projected, and moreover an elastic body is so fitted to the casing as to cover the hole. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rod-shaped material feeding device capable of easily putting a rod-shaped material such as a lip collar, a crayon, a pastel or an eraser in and out of a case (axial cylinder).

[0002]

2. Description of the Related Art A shaft cylinder having slits and a large number of engaged parts in the longitudinal direction of the shaft, and a slider slidably disposed in the shaft cylinder and having a bar-shaped object mounting portion. Many rod-shaped material feeding devices have been proposed. For example, the actual exploitation 5
0-24245, etc. The invention described in this publication is
It is a holder for writing instruments such as crayons, pencils, stick erasers, etc. The purpose is to extend the stick member as much as necessary when using, and to provide a locking part on the slider to prevent it from retracting when using , It is to be used as a case to prevent unintended retraction of rod-shaped objects.

[0003]

Generally, in the rod-shaped material feeding device, a slight clearance is provided between the rod-shaped material and the inner wall of the barrel to improve the sliding of the rod-shaped material. However, if there is a slight clearance between the inner wall of the barrel and the rod-shaped product, this will cause play (play), which may cause problems such as difficulty in aiming at the application or erasing point in operation and stroke. There was a problem that it would be more than the above. Especially when using a soft stick such as an eraser as the stick, if the tip of the eraser is pressed against the paper surface, the clamping force against the eraser will work between the paper surface and the slider, and the entire eraser will bend and shrink in the entire length direction. There was a case where the used part of was sunk into the barrel. If the eraser sinks inside the barrel, sufficient pressure will not be transmitted to the eraser during use.
When the erasability is poor, or when the barrel is completely immersed in the barrel, there is a problem that the tip of the barrel comes into contact with the paper surface and stains or damages the paper.

In view of the above problem of handling, the present invention makes it easy to put in and take out a rod-shaped object, eliminates looseness between the rod-shaped object and the barrel during use, and is not intended when using a soft rod-shaped object. An object of the present invention is to provide a rod-shaped object feeding device that can suppress the immersion in the axial cylinder inward direction.

[0005]

The present invention has a shaft cylinder having slits and a large number of engaged parts in the axial direction, and a slider slidably arranged in the shaft cylinder. In the rod-shaped object feeding device, wherein the slider is provided with an elastic body having an engaging portion with the engaged portion, at least one or more holes are provided in a front portion of the rod-shaped object which is fed out of the barrel. Further, a gist of a rod-shaped object feeding device is characterized in that an elastic body is covered on a barrel so as to cover at least the hole.

[0006]

In the rod-shaped object feeding device according to the present invention, the hole is provided in the front portion of the shaft cylinder, and the elastic body is attached so as to cover the hole. It deforms toward the center of the rod and contacts the outer wall of the rod, so you can grip the rod directly without rattling, and by gripping the part near the tip of the rod, the amount of immersion of the rod in the inward direction of the barrel can be reduced. Because it is held down, you can use it as if you grab the stick with your finger and use it. Since the elastic body is arranged in the front portion of the barrel, it also has a function as an elastic grip and is excellent in handleability.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a rod-shaped material feeding device of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of an example of a rod-shaped material feeding device according to the present invention. 2 is a side view of FIG. 1, FIG. 3 is a vertical cross-sectional view, FIG. 4 is an enlarged cross-sectional view taken along line I-I, and FIG. 5 is a state diagram when using FIG. Reference numeral 1 in FIG. 1 is a barrel. A flat surface portion 1a is formed on the outer wall of the shaft cylinder 1 in the axial direction, and the flat surface portion 1a is provided with slits 2 provided on both sides with a large number of engaged portions 2a formed of rectangular notches facing each other. I am doing it.

A slider 3 having a mounting portion 3a for a rod-shaped object A such as a lip collar, a crayon, a path, and an eraser is slidably arranged in the barrel 1. Inside the slider body 3, a resilient body 4 such as a leaf spring having an engaging portion 4a capable of engaging with an engaged portion 2a formed on the shaft cylinder 1 is arranged in a mountain shape. There is. This repellent body 4
The engaging portion 4a is adapted to engage with the engaged portion 2a formed on the barrel 1 through the hole 3b in the slider body. Reference numeral 5 is a knob connecting the clips 6. The knob 5 is fixed to the slider 3 by a leg portion 5a extending downward through the slit 2.

The engaging portion 4a may be a convex portion that can be inserted into the engaged portion 2a, but in consideration of operability during feeding and storage, the engaging portion 4a is curved or inclined. It is desirable to be composed of faces. Further, the cross-sectional shape of the shaft cylinder 1 may be any other suitable shape such as a square shape, a square shape, and a flat shape in addition to the cylindrical shape.

A hole 1b is provided in the front wall portion of the barrel 1 on the side where the rod-shaped object is fed. Further, the elastic body 7 serving as a grip is attached so as to cover all the holes 1b of the barrel 1. The inner wall of the elastic body 7 serving as a grip on the barrel side is in close contact with the outer wall of the barrel 1. Further, the portion corresponding to the hole 1b has a convex portion 7a formed on the center side of the barrel 1 and the hole 1b. It is designed to jump into. Further, the tip of the convex portion 7a is formed so as to have a diameter substantially the same as the inner diameter of the barrel 1, and it is desirable that it does not contact the rod-shaped object.

As the material of the elastic body 7 which becomes the grip,
These include: The values in parentheses indicate hardness (Shore hardness) and tensile modulus (Kgf / mm ² ). Styrene-butadiene elastomer (A40-90,
0.56-35), olefin elastomer (A62
To 92, 0.7 to 23), styrene elastomer (A
40 to 90, 0.5 to 30), polyamide elastomer (A97, 9 to 15), polyester elastomer (D40 to 72, 0.7 to 1.7), polyurethane elastomer (D55 to 95, 3.5). Up to 24.6), urethane (D60 to 100,7 to 26.3), EVA (ethylene vinyl acetate copolymer) (D17 to 45, 10.3)
~ 80), silicone resin (A15-65, 40-10
0), NBR (nitrile rubber) (15-100, 50-
250), butyl rubber (20 to 90, 50 to 150),
Isoprene rubber (20-100, 50-200), butadiene rubber (30-100, 20-200), EPDM
(Ethylene propylene rubber) (30-90, 50-20
0) etc.

As for the shape of the hole 1b of the shaft cylinder 1, other suitable shapes such as a square shape, a round shape, and a triangular shape can be adopted. Further, the number of holes may be one or more, but regarding the size, it is desirable that the convex portion 7a of the elastic body 7 serving as a grip easily comes into contact with the rod-shaped object, so that the strength and balance of the shaft cylinder can be kept as much as possible. It is desirable that the elastic body convex portion 7a is provided in a large size and the elastic body convex portion 7a has substantially the same size as the hole 1b. Further, in order to easily attach the elastic body 7 serving as a grip to the shaft cylinder 1, the portion of the shaft cylinder 1 to which the elastic body is mounted may be divided into two or more parts.

Since the elastic body serving as a grip can have a shape using irregularities such as knurls, ribs, and dot-shaped patterns on the outer periphery, the elastic body can be made slippery when using a rod-shaped object, The layers can be made cylindrical and the outer layer can be made softer than the inner layer, or it can be made even softer by injecting air or fluid between the layers, so it is possible to avoid fatigue even if you hold it for a long time and use it. it can.

In the present rod-shaped material feeding device, a gripping force is exerted by gripping the grip portion during use, and since the grip portion is an elastic body, it is deformed toward the center through the hole of the shaft cylinder. As a result, the inner wall of the grip comes into contact with the rod-shaped object and there is no backlash, so that when using the rod-shaped object, it becomes easy to aim at a portion to be applied or erased. Also, when using a soft stick such as an eraser, you can grip the stick near the tip, so the distance between the paper surface and the gripped portion is closer to the paper surface, and the amount of bending is shorter than the total length. It is possible to suppress immersion in the shaft cylinder.

[0015]

Since the rod-shaped object feeding device according to the present invention is equipped with the elastic body serving as a grip for covering the hole provided in the shaft tube, the shaft tube and the bar-shaped object are kept in use while being smoothly fed. When looseness occurs or when a soft rod-like object is used, it is possible to prevent unintended immersion in the shaft cylinder.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a side view of an embodiment of the present invention.

FIG. 3 is a vertical cross-sectional view of FIG.

FIG. 4 is an enlarged cross-sectional view of FIG.

FIG. 5 is a state diagram of FIG. 4 in use.

[Explanation of symbols]

1-axis cylinder 1a Shaft cylinder flat surface 1b Shaft cylinder hole 2 slits 2a Engagement part 3 slider 3a Mounting part 3b Slider hole 4 Repellent 6 clips 7 grip 7a Grip convex part A stick

Claims (3)

[Claims] 1. A shaft cylinder having a slit and a large number of engaged parts in the axial direction, and a slider slidably disposed in the shaft cylinder, wherein the slider is the engaged part. In a rod-shaped object feeding device having an elastic body having an engaging portion with, a hole is provided in the front part of the shaft cylinder where the rod-shaped object is drawn out, at least one hole is provided, and at least the hole is covered. A rod-shaped object feeding device characterized in that an elastic body is covered on a shaft cylinder. 2. The rod-shaped object feeding device according to claim 1, wherein the elastic body has a tubular shape. 3. The rod-shaped object feeding device according to claim 1, wherein a convex portion is formed on a portion of the elastic body wall corresponding to the hole.