JP3836908B2 - Inkstick and manufacturing method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ink stick that is a writing instrument used for an inking operation for writing a line, a mark, or the like on a building material in a building, and a method for manufacturing the ink stick.
[0002]
[Prior art]
Conventionally, as shown in FIG. 9, this type of ink stick has a brush tip portion 101 in which one end of a flat shaft 100 made of bamboo material is divided into a number of thin pieces in the width direction, and the other end is formed in a thin rod shape. There is what I did. This ink sashimi is used to squeeze ink by pressing the brush tip 101 against the ink of the ink brush, draw a line on the building material, or attach ink to the rod-shaped end 102 to write or mark numbers. It is done.
[0003]
[Problems to be solved by the invention]
In the above-mentioned conventional ink stick, if the slit in the brush tip part 101 is long (the thin piece is long), the waist becomes weak. Therefore, the amount of ink retained by the capillary phenomenon is increased, and a large amount of ink is applied once. It is difficult to draw a line, and when the ink remaining in the slits between each thin piece in the brush tip portion 101 is hardened, the thin pieces open and the ink holding function is impaired, or the thin line cannot be drawn early due to wear. There is. In addition, since the rod-like end portion 102 is only loosened into a rough fiber shape, even if it is pressed against the ink brush of the ink brush, the ink does not adhere sufficiently, so that numbers etc. are clearly written on the surface to be inked. In the writing process, it is necessary to frequently press the rod-like end portion 102 against the cotton wool.
[0004]
The present invention has been made under the circumstances as described above, and the technical problem is that the ink holding amount at the brush tip is increased and the ink holding function is not impaired. Is to provide.
[0005]
[Means for Solving the Problems]
The technical problem described above can be effectively solved by the present invention.
That is, in the ink stick according to the present invention, a brush tip member is integrally fixed to one end of a shaft member made of a synthetic resin, and the brush tip members are polymerized with each other in the thickness direction while being sequentially shifted in the longitudinal direction. Each thin plate comprises a tapered main body having elasticity and a mounting portion fixed to the shaft member, and a base end portion of the mounting portion is folded back in the thickness direction, and the main body of each thin plate Protrusions that are plastically deformed on both sides in the thickness direction by grinding are formed on one side edge in the width direction of the tip of each of the tips, and the projections open the gap between the tips and each tip is approximately in the thickness direction. They are arranged in an arc . Therefore, the brush tip member has a shape in which the leading edge gradually recedes toward one side in the superimposing direction of each thin plate. An inking operation such as drawing on a surface to be inked such as a building material is performed in a posture that is held in a gap between the thin plates of the writing tip member and the ink stick is appropriately tilted in the backward direction of the tip edge of the writing tip member. A gap that is wide at the attachment portion side and narrows at the tip side is formed between the thin plate bodies constituting the brush tip member, and sufficient ink is held in the gap, so that the thin plates adjacent to each other look like a shed. To work. In addition, the surface to be inked, such as building material, is slightly opened between the front end portions of the main body by a protruding portion plastically deformed in the thickness direction by grinding at the one side edge in the width direction of the front end portion of each thin plate. Since a good supply path of ink is supplied to the ink, it can be clearly marked. In addition, since the tips of the main bodies of the thin plates are arranged in a substantially arc shape in the thickness direction, a clear line is drawn even if the inclination angle of the ink stick relative to the surface to be marked changes during the drawing process.
[0006]
In addition, in order to obtain the above-described ink sashimi, the method of manufacturing an ink sword according to the present invention includes a mounting portion whose base end portion is folded back in the thickness direction and a tapered main body having a required number of small holes. By stacking a number of elongated thin plates in the thickness direction, inserting pins into the small holes at positions corresponding to each other in the thin plates, and tilting the pins with respect to the direction perpendicular to the plate surface of the thin plates The thin plates are sequentially shifted in the longitudinal direction, one end of a shaft member made of synthetic resin is joined to the attachment portions of the thin plates that are overlapped with each other, and one side edge in the width direction of the tip portion of the overlapped thin plates is ground. Is.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective view showing an embodiment of an ink stick according to the present invention, that is, the ink stick is integrally fixed to a flat shaft member 1 made of synthetic resin and one end of the shaft member 1. A pen tip member 2 and a pen tip member 3 detachably fixed in a state protruding from the other end of the shaft member 1. The nib member 2 is composed of a large number of thin metal plates 21 that are superimposed on each other in the thickness direction while being sequentially shifted in the longitudinal direction, and the nib member 3 is formed by forming felt made of an acrylic fiber bundle into a rod shape.
[0009]
Each thin metal plate 21 constituting the brush tip member 2 is made of a phosphor bronze plate having a thickness of about 0.2 mm, and as shown in FIG. 2, a main body 21a formed in a tapered shape and the main body 21a. And a mounting portion 21b that is formed to be narrower than the base end portion 21c. Small holes 21d to 21i aligned in the longitudinal direction are formed in the main body 21a, and among the small holes 21d to 21i, pins 22 that connect the respective thin metal plates 21 are connected to the small holes 21i closest to the base end portion 21c. Is inserted. Further, the tip end portion 21j of the main body 21a is formed to have a tip width of about 0.2 mm by grinding one side edge 21j ′ with a grinder.
[0010]
As shown in FIG. 3, the attachment portions 21 b of the metal thin plates 21 overlapped with each other in the brush tip member 2 are accommodated in the accommodation recess 11 in a state of being accommodated in the accommodation recess 11 formed at one end of the shaft member 1. Covered cover 12 made of synthetic resin is ultrasonically welded, whereby pen tip member 2 is integrally joined to one end of shaft member 1. A region W marked with a large number of dots in FIG. 3 is an ultrasonic welding portion of the cover 12.
[0011]
Of the small holes 21d to 21i drilled in each thin metal plate 21 of the brush tip member 2, a pin 22 that connects each thin metal plate 21 is inserted into the small hole 21i closest to the base end 21c. Both ends of 22 are fixed to pressing parts 13 and 14 that are formed to protrude from both sides in the width direction of the housing recess 11 in the shaft member 1. Both inner side surfaces of the housing concave portion 11 and the pressing portions 13 and 14 facing each other have a shape such that the facing distance between the receiving concave portion 11 and the pressing portions 13 and 14 is narrowed on the distal end side. The main body 21a is formed in a shape that is squeezed from both sides in the overlapping direction. Further, as shown in FIGS. 1 and 3, each thin metal plate 21 is gradually retracted toward the one pressing portion 14 side, and its tip 21j is arranged in a substantially arc shape with respect to the thickness direction. Therefore, the tip edge 2 a of the brush tip member 2 exhibits a substantially arcuate curved shape in the overlapping direction of the thin metal plates 21.
[0012]
As shown in FIG. 3, the ink stick of this embodiment performs a marking operation such as drawing the building material or the like on the surface S to be painted with a posture that is appropriately tilted in the backward direction of the tip edge 2 a of the brush tip member 2. . As described above, phosphor bronze having an appropriate elasticity of about 0.2 mm in thickness is adopted for each thin metal plate 21 constituting the brush tip member 2, but it is also suitable by the small holes 21d to 21i. Elasticity is given. Further, since the tip edge 2a of the brush tip member 2 has a substantially arcuate curved shape, even if the inclination angle of the ink stick changes during the process of drawing or the like, the ink line does not become unclear.
[0013]
The brush tip member 2 has the base end portion 21c of the attachment portion 21b of each thin metal plate 21 folded back, and the position of the main body 21a is overlapped by the opposing surfaces of the housing recess 11 and the pressing portions 13 and 14 in the shaft member 1. Since it is sandwiched and squeezed from both sides in the direction, a wedge shape gradually narrows toward the tip 21j between the thin metal plates 21 as shown in FIG. Gap G is formed. Therefore, a sufficient amount of ink can be held in the gap G, and the ink is also held in the small holes 21d to 21h formed in each thin metal plate 21. Further, since the gap G is narrow on the tip 21j side, in the inking operation such as drawing a line on the inking object surface S such as a building material, the adjacent metal thin plates 21 function like a shed. . Moreover, as shown in FIG. 5, the one side edge 21j ′ of the tip 21j of each thin metal plate 21 has a minute protrusion 21k that is plastically deformed in the thickness direction by grinding with a grinder. The leading end portions 21j are not in close contact with each other, and therefore, a good supply path for the ink to the inking target surface S is formed. Therefore, a thin and long line can be clearly drawn.
[0014]
Since the ink is held in the gap G having a shape in which the base end 21c side of the metal thin plate 21 is widened, the ink remaining in the gap G is applied to the brush tip member 2 after the inking operation is finished. It can be easily removed simply by wiping with, for example, even if a slight amount of residual ink is solidified, the clamping force from the side of the pressing parts 13 and 14 is always applied, so that the thin metal plates 21 are opened. There is no.
[0015]
In addition, when performing writing or marking of numbers or the like on the inking object surface S, the ink pen ink 3 is soaked in the nib member 3 made of felt of an acrylic fiber bundle protruding from the other end of the shaft member 1, The pen point member 3 is used to write and mark the numbers. If the nib member 3 is worn or damaged, it can be replaced with a new one.
[0016]
The above-described ink stick is manufactured by the following process. First, as shown in FIG. 6A, a large number of thin metal plates 21 having the same shape and the same size are overlapped in the thickness direction to form a brush tip member 2, and pins 22 are provided in small holes 21i that overlap each other in each thin metal plate 21. Pass through. The inner diameter φ ₁ of the small hole 21 i is formed to be 1.15 mm, for example, whereas the outer diameter φ ₂ of the pin 22 is formed to be slightly smaller than the inner diameter φ ₁ , for example, 1.0 mm, The pin 22 passed through the small hole 21i can be inclined at a predetermined angle. Therefore, as shown in FIG. 6 (B), when the pin 22 is inclined in the longitudinal direction of the thin metal plate 21, the overlapping position of the thin metal plates 21 is sequentially shifted in the longitudinal direction, and the thin metal plates 21 are thereby moved. The tip portion 21 j (tip edge 2 a of the brush tip member 2) is arranged in a line with an appropriate inclination angle with respect to the width direction of the brush tip member 2. Incidentally, the mutual deviation amount of each metal thin plate 21 when this, the inclination angle θ of the pin 22 in other words, the thickness t of the main body 21a of the sheet metal 21, the inner diameter phi ₁ of the small holes 21i, out of the pin 22 Determined by the diameter φ ₂ .
[0017]
As shown in FIG. 7, the brush tip member 2 is fitted into the receiving recess 11 in the shaft member 1 made of synthetic resin and the both ends of the pin 22 are accommodated in the mounting portion 21 b of the thin metal plate 21. The recesses 11 are fitted into pin support grooves 15 formed in the pressing portions 13 and 14 on both sides in the width direction. Next, a synthetic resin cover 12 is placed thereon, and this cover 12 is ultrasonically welded to the outer edge portion 11a of the housing recess 11 and the attachment portion 21b of the brush tip member 2 by an ultrasonic welding machine (not shown). . On the inner surface of the cover 12, an ultrasonic welding protrusion 12a having a substantially V-shaped cross section is formed in advance along the ultrasonic welding region W shown in FIG. This protrusion 12a is frictionally melted by the ultrasonic vibration with the outer edge portion 11a of the housing recess 11 and the attachment portion 21b of the metal thin plate 21, thereby welding the cover 12 to the shaft member 1 as shown in FIG. The brush tip member 2 is fixed while being integrated.
[0018]
Further, the tip edge 2a of the brush tip member 2 is ground with a grinder on the tip edge 2a shown in FIG. Further, by this grinding process, a minute protruding portion 21k by plastic deformation as shown in FIG. 5 is formed on one side edge 21j ′ of the tip portion 21j of each thin metal plate 21. And since this front-end | tip part 21j of the metal thin plate 21 is opened by forming this protrusion part 21k, the front-end | tip edge 2a of the brush-tip member 2 becomes a substantially circular arc-shaped curve shape as shown in FIG. .
[0019]
The present invention is not limited to the illustrated embodiment. For example, the metal thin plate 21 of the brush tip member 2 can be variously changed by replacing it with a thin plate made of synthetic resin.
[0020]
【The invention's effect】
According to the present invention, the following effects are exhibited.
(1) A gap capable of holding a sufficient amount of ink is formed between the body of each thin plate in the brush tip member, and the thin plates adjacent to each other function like a shed. You can draw a lot of inscriptions.
(2) Since the required number of ink holding holes are formed in each thin plate of the brush member, more ink can be held and the elasticity of the brush member is improved.
(3) Since the tip portion of each thin plate in the brush tip member is slightly opened and the ink is smoothly supplied to the surface to be painted such as building materials, the ink can be clearly marked.
(4) Since the tip of each thin plate in the brush tip member is arranged in a substantially arc shape, a clear line is drawn even if the tilt angle of the ink stick relative to the surface to be painted changes in the process of drawing, etc. good.
(5) Writing and marking of numbers and the like can be performed easily and clearly by using a pen tip member made of felt protruding from the other end of the shaft member.
(6) Even if dust or the like that enters between the thin plates of the brush tip member is hardened together with the remaining ink, the thin plates do not open, so that it can be used for a long time.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of an ink stick according to the present invention.
FIG. 2 is a perspective view showing a single metal thin plate of a brush tip member in the ink stick and a pin inserted therethrough.
FIG. 3 is an explanatory diagram showing a usage state in the ink stick.
FIG. 4 is an explanatory view partially showing the state of each metal thin plate of the brush tip member when the ink stick is used.
FIG. 5 is an enlarged cross-sectional view taken along the line VV in FIG. 4;
FIG. 6 is an explanatory view showing a step of manufacturing a brush tip member by superimposing a large number of metal thin plates in the thickness direction in the method of manufacturing the ink stick.
FIG. 7 is an explanatory view showing a step of joining the attachment portion of the brush tip member to one end of the shaft member in the method of manufacturing the ink stick.
FIG. 8 is an explanatory diagram showing a state in which the brush tip member is integrated with one end of the shaft member by ultrasonic welding in the above-described ink stick manufacturing method.
FIG. 9 is a perspective view showing a conventional bamboo ink stick.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Shaft member 2 Brush tip member 21 Metal thin plate 21a Main body 21b Attachment part 21c Base end part 21d-21i Small hole 21j Tip part 22 Pin 3 Pen tip member

Claims (2)

The brush tip member (2) is integrally fixed to one end of the shaft member (1) made of synthetic resin,
The brush tip member (2) is composed of a large number of thin plates (21) superposed on each other in the thickness direction while being sequentially shifted in the longitudinal direction,
Each of the thin plates (21) includes a tapered main body (21a) having elasticity and a mounting portion (21b) fixed to the shaft member (1).
The base end portion (21c) of the attachment portion (21b) is folded back in the thickness direction ,
Protruding portions (21k) that are plastically deformed on both sides in the thickness direction by grinding are formed on the side edge (21j ′) in the width direction of the tip (21j) of the main body (21a) of each thin plate (21),
The ink stick , wherein the protrusions (21k) open between the tip portions (21j) and the tip portions (21j) are arranged in a substantially arc shape in the thickness direction . An elongated thin plate (21) comprising a mounting portion (21b) whose base end portion (21c) is folded back in the thickness direction and a tapered main body (21a) in which a required number of small holes (21d to 21i) are formed. A large number of them are stacked in the thickness direction, and a pin (22) is inserted into the small hole (21i) at a position corresponding to each other in each thin plate (21), and this pin (22) is inserted into the plate surface of each thin plate (21). The thin plate (21) is sequentially shifted in the longitudinal direction by inclining with respect to a direction orthogonal to the shaft, and a shaft member (1) made of a synthetic resin is attached to the attachment portion (21b) of the thin plate (21) overlapped with each other. One end of the sheet is joined, and the side edge (21j ') in the width direction of the tip end portion (21j) of the laminated thin plate (21) is ground .

Images