JPH02160961A - Knitting needle of knitted fabric - Google Patents

Abstract

PURPOSE:To prevent deformation of a hook part with improving strength of the hook part and make correct hooking of the hook part and a spoon part by making cross-sectional shape of the hook part as a special shape. CONSTITUTION:Width of the bottom part L of a hook 3 is made as about 0.6H<=L<=0.8H as H is cross-sectional height of the hook, width of upper part lof the hook is made as 0.2H<=l<=0.6H and l<L, and further width of a curvature of the lower face W of a spoon 6 is made as 1.2l<=W<=1.7l, in a knitting needle 1 of knitted fabric having a shank 2, a hook 3 formed at the top end of the shank 2 and a latch 5 pivoted by the shank 2. I said needle, lower face of a spoon 6 at the top of the latch 5 and an upper face of the hook 3 are formed as a curvature bulging upward and the spoon 6 and the hook 3 are made to be able to hook on and off.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a stockinette knitting needle used in a stockinette knitting machine.

(Prior Art) As a stockinette knitting needle, one shown in FIG. 14 is well known. That is, the stockinette knitting needle 20 has a shank portion 21, a hook portion 23 formed at the tip of the shank portion 21, and a latch 24 pivotally supported by the shank portion 21. The spoon portion 25 that has been inserted is detachably engaged with the upper surface of the hook portion 23.

This stockinette knitting needle 20 can normally knit stockinette fabric when the spoon portion 25 and the hook portion 23 are engaged in the correct position, as shown in FIG.

That is, from the state where the knitting yarn loop 26 is hooked on the hook portion 23 as shown in FIG. 16(a), to the state shown in FIG. 16(b)
By moving the knitting needle 20 to the right in the drawing as shown in FIG. 2, the knitting yarn loop 26 is hooked onto the shank portion 21 by reversing the latch 25, and a new knitting yarn 27 is hooked onto the hook portion 23. Then, as shown in FIG. 16(C), as the knitting needle 20 moves to the left, the old loop 26 reverses the latch 24, and the knitting needle 20
As the needle moves to the left, the old loop 26 slips out from the tip of the knitting needle 20 and falls onto the new loop 27, as shown in FIG. 16(d).

However, if the knitting needle 20 is used for a long period of time, the pivot portion between the latch 24 and the shank portion 21 will wear out, causing the latch 24 to wobble, and as shown in FIG. I come to do it.

If the engagement positions of the hook part 23 and the spoon part 25 deviate in this way, an abnormal stitch is formed as shown in FIG. 18.

That is, as shown in FIG. 18(a), the first loop 26
However, it gets caught on the tip of the hook portion 23 and cannot be removed.

When the knitting needle 20 moves to the right from this state as shown in FIG. Can be hung. And Fig. 18(C)(d)
As shown in , the knitting needles 20 move to the left, and the first and second loops 26 and 27 are placed on the third loop 128 at the same time, resulting in abnormal knitting.

Therefore, a knitting needle that prevents such abnormal knitting from occurring is disclosed, for example, in Japanese Patent Publication No. 60-59337 (U.

S, P. 4,498,315).

In this conventional device, a recess is formed on the upper surface of the hook portion, a protrusion that fits into the recess is provided on the lower surface of the spoon portion at the tip of the latch, and the recess and the protrusion are fitted to form a spoon portion. The attempt was made to maintain the normal engagement position of the hook portion.

Furthermore, in conventional knitting needles, the cross-sectional shape of the hook part is circular and its diameter is small, so it is very weak and easily deforms, resulting in the locking position of the hook part and spoon part being difficult. There was a problem with it shifting.

Therefore, in order to increase the strength of the hook portion, a hook portion having a rectangular cross-sectional shape has already been proposed (see, for example, US Pat. No. 4,548,056).

(Problems to be Solved by the Invention) However, although the above-mentioned conventional device has the effect of maintaining the engagement position between the hook portion and the spoon portion normally, wear and deformation occur due to long-term use, and the engagement There is a risk that the alignment position will shift.

In the conventional device, the width of the spoon portion and the width of the hook portion are approximately the same, so that once the locking position shifts, the spoon portion 25 will change as shown in FIGS. 19 and 20. The problem still remained that the loop 30 was caught on the protrusion 29 of the hook portion 23 caused by the positional shift, and the loop 30 could not be removed from the needle 20.

Therefore, the present invention improves the strength of the hook part and prevents deformation of the hook part by making the cross-sectional shape of the hook part a special shape, and also ensures that the hook part and the spoon part are properly connected. and to prevent the loop from getting caught on the hook even if the two are slightly misaligned,
To provide stockinette knitting needles which prevent abnormal knitting from occurring.

(Means for Solving the Problems) In order to achieve the above object, the present invention takes the following measures. That is, the features of the present invention include a shank part, a hook part formed at the tip of the shank part, and a spoon part at the tip of the shank part, which is pivotally supported by the shank part and is detachably engaged with the upper surface of the hook part. In the stockinette knitting needle, the upper surface of the hook portion and the lower surface of the spoon portion are formed into curved surfaces that bulge upward, the cross-sectional shape perpendicular to the axis of the hook portion has a height that is H
Then, the bottom width is approximately 0.6H≦L≦0゜8H, and the top width l is 0.2H≦l≦0.6H2<L
The width W of the curved surface of the lower surface of the spoon is 1.2 j2≦W≦
It is at a point where it is said to be 1.71.

(Function) According to the present invention, the cross-sectional shape of the hook portion has a height of H
Then, the bottom width is 0.6 H≦L≦0.8H, and the top width! is 0.2H≦! Since ≦0.6H and l<L, it has a substantially trapezoidal shape with a high height. Therefore, compared to conventional circular or rectangular cross-sections, it has higher bending and torsional rigidity and is less susceptible to deformation.

Also, the width W of the lower surface of the spoon part is 1.2ρ≦W≦1.7 I! with respect to the upper width l of the hook part. , so the width of the spoon part is wider than the width of the hook part, and even if the attachment position of the spoon part and the hook part is slightly shifted, the side surface of the hook part will protrude from the side surface of the spoon part. This prevents the loop from hanging over the hook.

(Example) Embodiments of the present invention will be described below based on the drawings.

2 and 3 are enlarged views of essential parts of a stockinette knitting needle 1 showing an embodiment of the present invention. The knitting needle 1 has a shank portion 2 and a hook formed at the tip of the shank portion. portion 3 and a latch 5 pivotally supported on the shank portion 2 via a support shaft 4.

A spoon portion 6 is formed at the tip of the latch 5 and is detachably engaged with the upper surface of the hook portion 3.

FIG. 1 is a sectional view taken along line II in FIG. 2. In the sectional view, the height of the hook portion 3 is H, and the width of the bottom portion 7 is 0.6H≦L≦0. 8H, and the bottom portion 7 is formed into a curved surface that bulges downward.

The upper surface 8 of the hook portion 3 is formed into a curved surface that bulges upward, and the width l of the upper portion satisfies 0.2H≦2≦0.6H and Q<L.
It is said that The inclination angle α of the left and right side surfaces 9 of the hook portion 3 is 7.
0°≦α≦80°.

The lower surface of the spoon portion 6 of the latch 5 is formed into a curved surface that bulges upward, and its width W is 1.22≦W≦1.72.
is formed. The curvature of the lower surface of the spoon portion 6 is greater than the curvature of the upper surface of the hook portion 2.

The reason for the numerical limitation is as follows.

W<1.21! , when the spoon part 6 is loose, it will easily come off from the hook part 3, and the spoon part 6 will easily come off.
strength decreases.

If W>1.7l, the stability of the spoon portion 6 will deteriorate and there is a risk that the knitting yarn will break.

If 0.2H<l, the inside of the upper surface of the hook part 3 will be too narrow, and the spoon part 3 will not fit well, and the hook,
The strength of portion 3 is reduced. On the other hand, if l > 0.6H, the width of the upper surface of the hook portion 3 approaches the width of the spoon portion 6, making it difficult for the spoon portion 6 to fit, and making it more likely that flaws will occur.

In the case of L<0.6 H and α>80°, the upper width of the hook part 3 becomes close to the middle of the upper part, and the strength of the hook decreases.

When L>0.8H and α<70°, the cross section of the hook portion 3 becomes flat and the upper width of the hook portion 3 becomes narrow.
The spoon portion 6 does not settle properly.

In addition, the stitches become flat, the knitting operation becomes poor, and knitting defects are more likely to occur.

The stockinette knitting needle 1 is formed by the manufacturing process shown in FIGS. 4 to 8.

That is, as shown in FIG. 4, a needle material 11 is punched and formed from a steel band. As shown in FIG. 5, this needle material 11 is formed into an outer shape by copy cutting. after that,
As shown in FIG. 6, the tip is formed into a circular cross section by forging. Then, a groove for attaching a latch is machined to the cheek part. Then, as shown in FIG. 7, the tip portion is cold-forged into a predetermined cross-sectional shape. Then, as shown in FIG. 8, the tip portion is bent to form the hook portion 2. Thereafter, a latch is attached, heat treatment such as hardening and tempering is performed, and the barrel is polished and finished (not shown).

Note that FIGS. 9 to 13 show the cross-sectional shape of the tip of the needle material 11 shown in FIGS. 4 to 8.

(Effects of the Invention) According to the present invention, the width of the spoon portion is wider than the width of the hook portion, so even if the engagement position of the spoon portion and the hook portion is slightly shifted, the side surface of the hook portion is The spoon part no longer protrudes from the side surface.

Further, since the cross-sectional shape of the hook portion is approximately trapezoidal with a high height, the hook portion is strong against bending and twisting, and is difficult to deform.

Therefore, by using the stockinette knitting needle of the present invention, abnormal knitting can be prevented and high quality stockinette fabrics can be knitted.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a hook portion showing an embodiment of the present invention;
The figure is an enlarged front view of main parts showing an embodiment of the present invention, FIG. 3 is a plan view thereof, FIGS. 4 to 8 are manufacturing process diagrams of stockinette knitting needles of an embodiment of the present invention, and FIGS. The figures are cross-sectional views of the tips of Figs. 4 to 8, respectively, Fig. 14 is a front view showing a conventional stockinette knitting needle, Fig. 15 is a plan view thereof, and Fig. 16 is an explanatory diagram showing the procedure of stockinette knitting. , FIG. 17 is a plan view showing a state in which the engagement position of the hook portion and the spoon portion is shifted, and FIG.
The figure is an explanatory diagram showing the process by which abnormal knitting occurs, and FIGS. 19 and 20 are a plan view and a side view for explaining the conventional problems. 1-stockinette knitting needle, 2-shank part, 3-hook part,
5-latch, 6-spoon part.

Claims (1)

[Claims] (1) having a shank part, a hook part formed at the tip of the shank part, and a latch which is pivotally supported by the shank part and whose spoon part at the tip removably engages with the upper surface of the hook part; In stockinette knitting needles in which the upper surface of the hook portion and the lower surface of the spoon portion are formed into curved surfaces that bulge upward, the cross-sectional shape perpendicular to the axis of the hook portion has a height of H.
Then, the bottom width L0.6H≦L≦0.8H, the top width l0.2H≦l≦0.6H and l<L, and the width W of the curved surface of the lower surface of the spoon is 1.2L≦ W≦1.
Stockinette knitting needles characterized by being 7l.