JPS602418B2 - Shuttle and its manufacturing method - Google Patents

Description

[Detailed description of the invention] The present invention relates to a shuttlecock and a method for manufacturing the same.

The present invention relates to a wooden shirttle manufactured from a wood block, but the grain of the wood runs in the length direction of the shirttle, and when inserting the striped pipe with iron, the base of the shirttle is pushed outward in the lateral direction, so the upper and lower surfaces of the base easily cracks in the length direction.

This also means that the top and bottom surfaces of the top and bottom of the tip are also likely to crack in the length direction, since the tip of the shuttlecock is similarly pushed apart in the lateral direction when it is impacted by the picker. This mirror orientation also tends to occur when the lower surface of the tip becomes thin due to peeling of the inner part. Similarly, both sides of the middle part of the shirt handle are thin due to the peeling of the inside part, so even if the shirt handle is pinched due to a small accident, the middle part of the shirt handle is likely to crack in the length direction. There is a direction. On the other hand, Japanese Utility Model Publication No. 51-39028 is a prior art in which a hard material such as compressed material or fiber is used to reinforce a wooden shuttlecock.

However, in the technique disclosed in this publication, a layer of hard material is bonded to the outer surface of the wood so that both sides and the bottom surface of the shuttlecock body are made of hard material. Therefore, if the surface of the hard material becomes hangnails or scratches due to friction, static electricity is generated, and the problem is that threads get caught more than on conventional wooden surfaces. In view of the above circumstances, the present invention aims to provide a newly created shirttle and a method for manufacturing the same.

That is, in the shirttle of the present invention, only the portions that are likely to be damaged are reinforced with a hard member, and the main body of the hard member is not exposed to the surface of the shirttle, thereby preventing threads from getting caught. This is what I did. That is, the first invention of the present application relates to a shuttlecock and has the following technical means.

At least one or two locations on the top and bottom of the base, tip, and middle part of a shirttle made of wood with grain running in the longitudinal direction, or on the middle layer near the sides, other than the thread grooves on the sides.
It is a shirt bolt that has a hard part sandwiched between the parts and is fixed in place.

The hard member is in the form of a thin flat plate, and is installed with only its weave extending flush with the surface of the shuttlecock.
The main body of the hard member is not exposed on the surface of the shuttlecock. Here, the above-mentioned intermediate layer refers to the area between the wood parts of the wood that constitutes the main body of the shuttlecock.

The wood that constitutes the main body of the shirttle is usually made of one piece of wood, but it may be made of pieces of wood with different strengths for the purpose of improving the strength of the shirttle. Therefore, in the shirttle of the first invention of the present application, the strength of the shirttle is increased by the hard member. Moreover, the main body having a wide area in the form of a thin plate is not exposed on the surface of the shirttle, but only the thin end portion is exposed. Therefore, even if the surface of the shuttlecock comes into contact with another object, the contact area between the hard member and the other object is small. Furthermore, since the hard part is sandwiched between the intermediate layers, the area around the exposed hard part is entirely made of wood, which further reduces the effect of changes in quality on other objects with which it comes into contact. The second grant of this application is
A method for manufacturing the shirttle of the first invention,
A step of drilling a thin slit groove in one or more positions of a wood block that will become the intermediate layer of the shirttle, and a step of inserting a thin flat plate-shaped hard member into the slit groove, The present invention relates to a method of manufacturing a shirttle in which the main body is not exposed to a hard member on the surface of the shirttle.

According to this second invention, a shirttle is manufactured in which the main body of a thin, flat hard member is sandwiched between thin slit grooves, and only the thin end portions of the hard member are exposed to the surface.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A shirttle and a method for manufacturing the same according to the present invention will be explained below based on the drawings.

The wood block 1 is a long rectangular prism with the wood grain running in the T direction, and the block 1 is prepared from wood in advance and entered into the manufacturing process of each shuttlecock.

1 to 3 show an example in which workpieces are clamped at four locations on the upper and lower surfaces of the base and tip of the shuttlecock. 2
2 is a slit groove drilled in the upper surface of the base, and 3 is a slit groove bored in the lower surface of the base. The slit groove 2 is slightly diagonally upward and short, and the slit groove 3 is long and slightly diagonally downward.

4 and 5 are hard members made of fiberboard,
As a hard member, wood with a poor grain in the middle direction, ``modified wood'',
Synthetic resin plates (including not only thermosetting but also thermoplastic synthetic resin plates), FRP, etc. can be used as appropriate. In addition, in the case of this embodiment, the thickness of the hard member is slightly thicker than the thickness of the slit book, and the hard members 4 and 5 are used.
Adhesive is applied to both sides of the board beforehand. After the hard members 4 and 6 are sandwiched, until the adhesive dries, pressure is applied from the top, bottom, left and right sides to ensure complete adhesion. It consists of a step of drilling and a step of attaching a hard member.

However, the shirttle of the present invention is characterized in that the hard member is partially exposed. The base and tip of the shuttlecock are pointed and have a different curve from the outer shape of the middle part.Therefore, if you try to pinch a hard member at a certain position from the outside, the base and tip will be different. The tip must be inserted diagonally upward on the top surface, diagonally downward on the bottom surface, and parallel in the middle.Therefore, it would be impossible to insert a hard member through the entire length of the shuttlecock, and this is the conventional method. This was also a drawback of the technology, so in the present invention,
This is achieved by partially sandwiching only the areas where cracks occur to create a composite structure. In Figure 2, the base and tip have been sharpened, the metal fittings 6 and 7 on both ends have been fixed, and holes 8 for attaching thread guides, wood pipe receptors, tongs, etc. have been drilled. It shows the process up to this point.

9 is a hard member that is mounted on the upper surface of the base, 10 is a hard member that is held on the lower surface of the base, 11 is a hard member that is rounded on the upper surface of the tip, and 12 is a hard member that is held on the lower surface of the tip. It shows.

FIG. 3 shows a finished shirttle in which a woodwind receptor 14 is attached to the base of the shirttle shown in FIG. 16 is the hard part village that was sandwiched on the bottom surface of the base.

Reference numeral 17 is a hard member sandwiched between the upper surface of the tip, and a portion 17' also protrudes from the inner part. Further, numeral 18 is a hard member that is clamped on the lower surface of the tip, and a portion of the inner portion as 18' protrudes inside the bottom surface. but,
The main body of the shirttle surface is woodwind, and in particular, the thread groove 20 that connects to the mounting holes 19, 19 of the thread guide is made so that no hard member comes into contact with it to prevent the thread from getting caught. . FIG. 4 shows a finished shirt toll showing another embodiment, which includes a shirt toll eye 21,
It has springs 22 on both sides for gripping the woodwind, and an inner part 23
is hollow, and a woodwind is hammered in from the top.
This is a shirt toll for an automatic loom that knocks down used wood pipes from the inner wiping part 23.

In this case, the part where the shuttlecock is particularly likely to crack is that the bottom surfaces of the bases of the springs 22 on both sides of the woodwind grip are thinly extended, and the shuttlecock is likely to break as it is pushed outward in the middle direction. Therefore, in the case of FIG. 4, a hard member 24 is pinched on the lower surface of the base, but a portion 24' also protrudes from the lower surface of the spring inside.

In the case of Fig. 4, 25 hard members are mounted on the rear side of the middle part, and 2 hard members are mounted on the upper and lower front of the middle part.
6 hard members are sandwiched between them to make it difficult to break even if the shuttlecock gets caught in a small accident. The shirttle of the present invention is reinforced to prevent cracking by partially sandwiching hard parts.

In addition, only a portion of the hard member is exposed on the shirttle surface, and the main body is made of wood, which prevents threads from getting caught. Further, the manufacturing method of the present invention includes a slit groove drilling process and a sintering process.

This slit groove drilling step can be easily and accurately formed by determining the height and angle, inserting a chain blade of a certain thickness, a cutter, etc., and drilling the step to a certain depth. The subsequent driving and bonding of the hard member can also be done easily and reliably since it involves machining only a partial straight section. Therefore, process simplification,
To provide a durable shirttle and a method for manufacturing the same while reducing costs by partially using expensive hard members.

[Brief explanation of drawings]

Figure 1 shows the process of drilling slit grooves in a wood block,
FIG. 2 is a perspective view of the method of the present invention showing the process of attaching a hard member to the drilled hole; FIG. FIG. 3 is a perspective view of the shirt toll of the present invention, which is a finished semi-finished product of FIG. 2, and FIG. 4 is a perspective view of the shirt toll of the present invention showing another embodiment. be. In the figure: 1... - wood block, 2, 3... slit groove, 4, 11, 17, 17'... hard member on top of tip, 5, 12, 18, 18' ...Hard member on the lower surface of the tip, 9, 15... Hard member on the upper surface of the base, 10
, 16, 24, 24'... Hard member on the lower surface of the base, 25.
26...Hard members on the side and upper and lower surfaces of the center. Figure 1 Figure 2 Figure 3 Figure 3

Claims (1)

[Scope of Claims] 1. In a shuttle made of wood with grain running in the longitudinal direction of the shuttle, at least the top, bottom, or side surface of the base, tip, and middle part other than the thread grooves on the sides of the shuttle By inserting a thin, flat plate-like hard member into one or more places of the nearby intermediate layer with only its ends exposed flush with the surface of the shuttle, the structure of the shuttle is improved. A shuttle characterized in that the main part of the hard member is not exposed on the surface. 2. In a method for manufacturing a shuttle that processes a wood block with a longitudinal grain, the upper part of the shaft, the tip part, and the upper part of the intermediate part other than the thread grooves on at least the sides of the shuttle
A step of drilling a thin slit groove in one or more positions of the above-mentioned wood block, which will be an intermediate layer near the bottom or side surface, and inserting a thin flat plate-shaped hard member into the slit groove. 1. A method for manufacturing a shuttle, characterized in that the main part of the hard member is not exposed on the surface of the shuttle. 3. The method according to claim 2, characterized in that a hard member having the same or slightly thicker thickness than the slit groove is used, and the hard member is driven into the slit groove and inserted thereinto. How to make a shuttlecock.