JP2004230495A - Lock mechanism for bobbin - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock mechanism for a bobbin which easily locks the rotation of the bobbin and releases the lock with no restrictions on the lock position. <P>SOLUTION: A thread 3 is led outside through a thread delivery port of a case from the bobbin rotatably enclosed in a bobbin storage part formed in the case. A handle 4 is mounted to an end plate 22 of the bobbin exposed outside from an opening part formed in a ring lid 14 of the case, movably in a circle around the axis of a shaft 41 approximately orthogonal to the rotation axis O of the bobbin, through the shaft 41. When one end of the handle 4 is brought down into a prescribed position, a locking notch and protrusion 42d formed at a locking part 42c at the other end are ruggedly engaged with a locking notch and protrusion 144 circumferentially provided at the opening part. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock mechanism for restricting rotation of a bobbin for manually winding a bobbin, and to a lock mechanism applied to a drawing pot such as a black pot used for blacksmithing work in woodwork or construction.
[0002]
[Prior art]
As a device provided with a bobbin for manually winding a bobbin, there is an ink pot used by a construction worker or the like, and a typical prior art thereof is described in, for example, Patent Document 1 below.
[0003]
[Patent Document 1]
JP-A-2002-66964 (FIGS. 1 to 4)
[0004]
In other words, the ink pot was formed at one end of the case through a black ink chamber filled with a black ink penetrating member in which black ink was impregnated. It has a structure in which it is fed out from the thread pay-out port and a clasp for fastening is attached to the tip of the black ink thread. Then, in the black ink work using this ink pot, first, the karuko is fixed to the black ink starting point, and then the black ink thread is pulled out by moving the case. In the process of passing, black ink adheres due to contact with the black ink penetrating member, so that this thread stretched with an appropriate tension is flipped with a finger toward the surface to be blacked, thereby forming a straight black line. Can be transcribed.
[0005]
[Problems to be solved by the invention]
However, in the related art described in Patent Document 1, in order to prevent the black ink yarn wound around the yarn and the lump at the tip thereof from being carelessly pulled out, the black ink yarn is wound. After taking it, as shown in FIG. 3 of the above-mentioned document, it was necessary to insert and lock the swarf in the thread pay-out opening of the case, which was troublesome. In addition, in order to apply appropriate tension to the drawn-out black ink yarn in the black ink operation, the case must be pulled while the rotation of the yarn winding is stopped by pressing the handle with a finger or the like, which is not convenient.
[0006]
In addition, there is a type in which the knob portion of the handle is engaged with an engagement concave portion formed in a part of the case to lock the rotation of the bobbin, but when the black ink thread is completely wound around the bobbin, However, the handle of the handle is not necessarily in the same phase as the concave part of the case, but rather, the handle is returned to the state where the ink thread is not completely wound, and then the handle is moved to the case. In most cases, the black ink thread is pulled out of the case to some extent and locked in engagement with the concave portion, and the black ink attached to the black ink thread may adhere to the surface of the case or other tools and become dirty. was there.
[0007]
SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has as its technical object the ability to easily lock or unlock the rotation of a bobbin, and furthermore, to provide a bobbin with a lock position that is not restricted. It is to provide a locking mechanism.
[0008]
[Means for Solving the Problems]
As means for effectively solving the above-mentioned technical problem, a thread lock mechanism according to the invention of claim 1 is configured such that a thread is rotatably accommodated in a thread spool accommodating portion formed in a case. A lock member is attached to an end plate of the bobbin exposed to the outside from an opening of the case via a shaft substantially orthogonal to a rotation axis of the bobbin. The lock member is mounted so as to be capable of circular movement around the heart, and when one end is tilted to a predetermined position, the locked portion at the other end is locked at any position in the circumferential direction of the opening. Things.
[0009]
According to a second aspect of the present invention, there is provided a peg lock mechanism according to the first aspect, wherein the lock member is a handle for manually rotating the peg.
[0010]
According to a third aspect of the present invention, there is provided a peg-locking mechanism, wherein the locked portion of the locking member according to the first aspect is provided with locked irregularities, and the locked portion is formed on the inner peripheral surface of the opening of the case. The projections and depressions are provided with locking projections and depressions that can engage with each other.
[0011]
According to a fourth aspect of the invention, there is provided a peg lock mechanism wherein the locked portion of the lock member according to the first aspect is locked to the inner peripheral surface of the opening of the case by frictional force.
[0012]
A fifth aspect of the present invention provides a peg lock mechanism according to the first aspect, wherein the case is a case of a sumo pot.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a plan view of a ink bottle showing a preferred embodiment in which a peg lock mechanism according to the present invention is applied to a ink bottle, FIG. 2 is a bottom view, FIG. 3 is a front view, FIG. 4 is a rear view showing a partial cross section, 5 is a cross-sectional view taken along the line VV of FIG. 1, FIG. 6 is a perspective view showing the handle 4 alone in this embodiment, and FIG. 7 is a portion showing the ring cover 14 of the case 1 alone in this embodiment. FIG. 8 is a schematic perspective view, and FIG. As shown in FIGS. 1, 2, and 5, the ink pot of this embodiment includes a case 1, a spool 2 rotatably stored in the case 1, and a black thread 3 wound around the spool 2. , A handle 4 provided on the bobbin 2, a black ink penetrating member 5 housed in the black room 111 of the case 1, and a sword 6 connected to the tip of the black ink thread 3.
[0014]
As shown in FIGS. 1 and 2, the case 1 includes a case body 11 having a cylindrical black room forming portion 11A at the front and a dish-shaped spool winding portion 11B at the rear, and a black room forming portion 11A. It comprises a top member 12 joined to the tip, a lid 13 provided on the upper part of the ink room forming part 11A, and a ring lid 14 provided detachably on an upper opening of the dish-shaped spool storage part 11B.
[0015]
The case body 11 is formed of a synthetic resin material, and a black ink chamber 111 filled with the black ink penetrating member 5 is formed in the black ink chamber forming portion 11A as shown in FIG. In the circular hole formed in the partition wall 112 between the ink room 111 and the bobbin storage portion 11B, a yarn insertion tube 15 made of a soft synthetic resin and the bobbin storage portion 11B side (hereinafter, referred to as a rear side). Are fixed, and a pair of metal guide pins 17 (only one is shown in FIG. 5) located further behind the seal plate 16 are fixed. One end of the thread insertion tube 15 protrudes into the black ink chamber 111, and has an inner diameter slightly larger than that of the black ink thread 3. Further, a thin slit (not shown) through which the black ink thread 3 can pass is formed in the seal plate 16, and a pair of guide pins 17 are provided at appropriate intervals through which the black ink thread 3 can pass. Are fixed in parallel with each other.
[0016]
The top member 12 is formed of a wear-resistant resin material, and is inserted and fixed via a packing 12d to the inner periphery of the tip of the black chamber forming portion 11A in the case body 11, as shown in FIG. A thread feeding port 12a is formed on the inner periphery. The thread feeding port 12a has an inner end on the side of the ink chamber 111 in the form of a thin circular hole having substantially the same diameter as the ink driving thread 3, thereby preventing the ink from flowing out of the ink chamber 111 and opening the outer side thereof. As shown in FIG. 3, the yarn feeding end portion 12b, which is an edge, is formed so as to spread in a flat funnel shape.
[0017]
The lid 13 opens and closes an opening of the black room 111 which is opened on the upper wall surface of the black room forming portion 11A of the case 1, and is formed of a synthetic resin material. The end of the lid 13 on the side of the thread pay-out end 12b is located in a direction (both right and left sides) substantially perpendicular to the direction in which the black ink thread 3 is fed out (hereinafter referred to as the front-rear direction) in the black room forming section 11A of the case 1. A protruding coupling shaft 131 is provided, and is coupled to a pair of coupling holes 12 c formed in the top member 12 of the case 1. The coupling hole 12c is formed in a long hole shape elongated in the front-rear direction, and the coupling shaft 131 is movable in the coupling hole 12c in the longitudinal direction, that is, in the front-rear direction. Therefore, the lid 13 can move circularly around the axis of the coupling shaft 131 in the coupling hole 12c, and can reciprocate in the front-rear direction.
[0018]
A locked projection 132 and an operation end 133 for opening and closing the lid 13 with fingers are formed at an end of the lid 13 opposite to the coupling shaft 131, that is, at a free end. The locked projection 132 is formed so as to face the rear of the case 1 when the lid 13 is closed. On the other hand, a locking ring 113 is formed at a position on the upper surface of the black room forming portion 11A of the case 1 on the side of the bobbin storage portion 11B. This locking ring 113 can insert and lock the locked projection 132 as shown in FIG. 5 by moving the lid 13 closing the opening of the ink chamber 111 backward. The lid 13 is fixed in a closed state.
[0019]
A rubber packing 134 is provided around the lower surface of the lid 13 between the coupling shaft 131 and the locked projection 132. When the lid 13 is fixed in a closed state by locking the locked projection 132 to the locking ring 113, the packing 134 is appropriately compressed and closely attached to the outer peripheral upper surface of the opening of the black chamber 111, This prevents leakage of the ink in the inside 111. In addition, the compression reaction force of the packing 134 at this time acts as a pressing force for maintaining the locked state of the locked projection 132 with the locking ring 113.
[0020]
A cap-shaped elastic sealing body 135 made of a rubber material is tightly fitted in a circular hole formed in the center of the lid 13, and a pressing member 136 made of a synthetic resin material is provided on the inner surface of the elastic sealing body 135. Installed. When the lid 13 is closed by inserting and locking the locked projection 132 into the locking ring 113, the pressing member 136 is located directly above the feeding path of the black ink thread 3 in the black room 111. When the elastic sealing body 135 is pressed and depressed by a finger, the pressing member 136 is displaced downward, and the black ink thread 3 and the black ink penetrating member 5 into which the black ink has penetrated are forcibly pressed. Is sufficiently adhered. When the pressing by the finger is released, the pressing member 136 is returned by the restoring force of the elastic sealing body 135. In addition, the periphery of the circular hole in the lid 13 is a concave portion 13a, and the elastic sealing body 135 is accommodated in the concave portion 13a.
[0021]
In addition, as shown in FIG. 3, when the opening of the black ink chamber 111 is closed, the lid 13 is fitted into a concave portion 114 formed on the upper surface of the black ink chamber forming portion 11 </ b> A of the case 1 (the case main body 11). That is, it does not project outside the case body 11. At this time, the elastic sealing body 135 provided on the lid 13 is also located in the virtual cylindrical surface extending from the outer peripheral surface of the case main body 11.
[0022]
The ring cover 14 rotatably holds the bobbin 2 in the bobbin storage portion 11B of the case main body 11, and as shown in FIGS. 1, 4 and 5, is provided on the upper edge of the bobbin storage portion 11B. An annular main body 141 having an upper opening 141a formed to have a smaller diameter than a lower opening abutted via a packing 11C made of a rubber material, an engaging portion 142 formed at a rear end thereof, and FIGS. As shown in FIG. 4, it has a pair of snap claws 143 formed at positions corresponding to the left and right sides of the ink room forming portion 11A. The ring lid 14 engages the engaging portion 142 with the engaged portion 115 protruding from the rear end of the bobbin storage portion 11B, and forms a pair of snap claws 143 on the outer surface of the bobbin storage portion 11B. By snap-engaging the pair of engaged concave portions 116, respectively, it is fixed to the upper part of the bobbin storage portion 11B.
[0023]
As shown in FIG. 5, the bobbin 2 is provided with a bobbin main body 21 around which the black ink yarn 3 is wound around the outer periphery thereof, and is provided integrally with one end in the axial direction of the bobbin main body 21 so as to be located above the main body 141 of the ring lid 14 The end plate 22 exposed to the outside from the inner periphery of the opening 141a and the bearing unit 23 fixed to the inner surface (upper surface) of the bottom wall 117 of the bobbin storage portion 11B of the case main body 11 and rotatably supporting the bobbin main body 21. Become. These members are formed of a synthetic resin material, and the bobbin 2 can be taken out from the bobbin storage section 11B by removing the ring lid 14 from the bobbin storage section 11B of the case body 11.
[0024]
The handle 4 is used for rotating the bobbin 2 with fingers, and as shown in FIGS. 1 and 5, the inside of the storage recesses 22 a formed on the upper surface of the end plate 22 of the bobbin 2 oppose each other. A shaft 41 is provided between the side surfaces, which is located near the outer periphery of the end plate 22 and extends in a direction substantially perpendicular to the rotation axis of the bobbin 2, and a circle formed around the axis of the end plate 22 via the shaft 41. An arm 42 movably mounted, a pin 43 provided perpendicular to one side surface of the operation end 42a of the arm 42, and a cylindrical knob member 44 rotatably externally mounted on the pin 43 Consists of
[0025]
As shown in FIGS. 5 and 8A, when the handle 4 is tilted about the shaft 41 so as to store the arm 42 in the storage recess 22 a of the end plate 22, the knob member 44 is moved to the end position. It is configured to be stored in a storage hole 2 a formed continuously from the inner peripheral portion of the board 22 to the inner peripheral portion of the bobbin main body 21. Further, as shown in FIG. 8B, when the rotation is caused by rotating the shaft 41 to the outer peripheral side of the end plate 22, the shaft center (pin 43) of the knob member 44 is rotated by the rotation of the bobbin 2. It is substantially parallel to the axis O.
[0026]
As shown more clearly in the perspective view of FIG. 6, a pair of locked portions 42c protrude from a boss portion 42b provided with a shaft 41 on the side of the arm 42 opposite to the operation end portion 42a. Each locked portion 42c is formed with a single or a plurality of locked concave / convex portions 42d extending in a direction orthogonal to the shaft 41.
[0027]
On the other hand, the main body 141 of the ring lid 14 constituting the case 1 is most clearly shown in the perspective view of FIG. 7 over the entire inner peripheral surface of the circular upper opening 141a into which the end plate 22 of the bobbin 2 is loosely fitted. As shown in the figure, a large number of locking projections 144 extending parallel to the axis of the main body 141 are formed. The locking unevenness 144 is formed at a pitch corresponding to the locked unevenness 42 d of the arm 42 of the handle 4, and as shown in FIG. By retracting the knob member 44 to the non-use position such that the knob member 44 is stored in the storage hole 2a, the locked concave and convex 42d of the locked portion 42c of the arm 42 is stored. Are displaced so as to face the outer peripheral side, and are engaged with the engaging unevenness 144 at any position in the circumferential direction in the upper opening 141a.
[0028]
That is, the handle 4 has a function inherent to the handle for manually rotating the bobbin 2 and a function as the lock member described in claim 1, that is, the locked unevenness 42d of the locked portion 42c of the arm 42, The function of locking the rotation of the bobbin 2 by engaging the engaging unevenness 144 of the ring lid 14 of the case 1 unevenly is also provided.
[0029]
The black ink yarn 3 fed from the bobbin main body 21 of the bobbin 2 corresponds to the yarn described in claim 1, and as shown in FIG. The black ink is adhered to the ink penetrating member 5 in the black ink chamber 111 through a slit (not shown) formed in the black ink chamber 16 and the thread insertion tube 15, and the black ink is adhered to the outside of the case 1 from the thread feeding port 12 a of the top member 12. Derived. The black ink penetrating member 5 in the black ink room 111 is made of black cotton in which cotton or felt is wrapped with a protective sheet through which black ink can penetrate, or a sponge disposed thereon. Further, the thread insertion tube 15 and the seal plate 16 have a function of preventing the black ink impregnated in the black ink penetrating member 5 in the black room 111 from flowing out into the bobbin storage section 11B.
[0030]
As shown in FIG. 1, FIG. 2 and FIG. 5, the scale 6 has a handle 61 formed of a synthetic resin material, and a metal stab having the base fixed to the handle 61 in an embedded state by insert molding. It comprises a needle 62 and a protective material 63 made of synthetic resin surrounding the outer periphery of the puncture needle 62. The handle 61 is formed in a flat shape, and the end on the side of the puncture needle 62 and the protective material 63 are formed in a funnel-like shape of the top member 12 in a state where the black ink thread 3 is completely wound around the bobbin main body 21. It is designed to be hooked in a state where it is inserted into the thread feeding port 12a. The puncture needle 62 has only a sharp end protruding from the tip of the protective material 63.
[0031]
Reference numeral 7 in FIG. 2 is a threading device. The threading device 7 is used to seal the gap between the guide pins 17 so that, for example, when the black ink thread 3 is cut, the end of the black ink thread 3 wound around the bobbin main body 21 is tied back to the limp 6. It is used to lead out of the case 1 through the slit of the plate 16, the thread insertion tube 15, the ink chamber 111, and the thread feed port 12a, and is formed in an elongated shape. On the lower surface of the bobbin storage portion 11B of the case body 11, a locking groove 118 extending in an arc shape near the outer periphery is formed, and the threading tool 7 follows the groove 118 in the locking groove 118. It is locked in a state of being curved in an arc shape.
[0032]
When performing the blacking operation using the ink jar having the above-described configuration, first, the stab needle 62 of the karuko 6 is stabbed at one of the starting points of the blacking on the blacking target surface (not shown), and the handle is turned on. 8B as shown in FIG. 8 (B), the uneven engagement between the locked unevenness 42d of the locked portion 42c of the arm 42 and the locking unevenness 144 of the case 1 (ring lid 14). After the locked state of the bobbin 2 is released, the case 1 is moved toward the other starting point, so that the bobbin main body 21 is rotated while the bobbin 2 is rotated. Extend by the moving distance. Black ink adheres to the black ink thread 3 by coming into contact with the black ink penetrating member 5 impregnated with black ink in the process of being fed out through the black room 111.
[0033]
After the case 1 is moved to the other starting point of the black ink, the handle 4 is tilted down as shown in FIG. 8A, and the locked irregularities 42d of the locked portion 42c of the arm 42 and the case 1 By engaging the concave and convex 144 of the (ring cover 14) with the concave and convex engagement, the rotation of the bobbin 2 is locked, and by appropriately pulling the case 1, tension is applied to the black ink thread 3 with the karoko 6. In this state, the black ink thread 3 is pressed against the surface to be blacked by the yarn feeding end 12b of the top member 12 of the case 1. Then, by striking the black ink thread 3 with the finger toward the black ink target surface, a straight black ink line can be transferred. According to the related art described in Patent Document 1 described above, in order to apply an appropriate tension to the fed black ink thread, the case is controlled while the rotation of the bobbin is stopped by pressing a handle with a finger or the like. However, according to the present embodiment, the rotation of the bobbin 2 can be surely stopped by merely tilting the handle 4, so that the usability can be remarkably improved.
[0034]
After the completion of the inking operation, the carcass 6 is pulled out from the surface to be inked, and the handle 4 is raised as shown in FIG. 8B to release the locked state of the peg 2 and the knob member 44 of the handle 4 Is pinched by hand and manually rotated to rotate the spool 2 in the winding direction. Accordingly, the black ink yarn 3 is wound around the bobbin main body 21 until the skewer 6 is locked in the yarn feeding port 12a of the top member 12 in a semi-housed state. Further, when the handle 4 is raised, the axis of the knob member 44 can be made parallel to the rotation axis O of the bobbin 2, so that uncomfortable feeling due to the twisting motion of the knob member 44 can be prevented.
[0035]
When the black ink thread 3 is wound around the bobbin main body 21 until the spar 6 is latched in the thread pay-out opening 12a of the top member 12 in a semi-storing state, the handle 4 is moved as shown in FIG. By falling, the locked unevenness 42d of the locked portion 42c of the arm 42 and the locking unevenness 144 of the case 1 (ring lid 14) are unevenly engaged, and the rotation of the bobbin 2 is locked. Since the locking unevenness 144 is formed over the entire inner peripheral surface of the upper opening 141a of the ring lid 14, the black ink thread 3 is wound up until the spar 6 is locked in the thread feeding port 12a. Thus, even if the handle 4 is on any phase with respect to the ring lid 14, simply by tilting the handle 4, the locked unevenness 42d engages with the locking unevenness 144 on the phase, so that the spool 2 is locked. be able to.
[0036]
Therefore, as in the prior art described in Patent Document 1 described above, the work of fitting the kuroko 6 into the yarn feeding port 12a after winding up the black ink yarn 3 is unnecessary, and furthermore, it is not necessary to carry out the work. Since the bobbin 2 is fixed in a state where the black ink thread 3 is wound up until the black ink thread 6 is locked by the thread pay-out port 12a, the black ink thread 3 is pulled out carelessly and the carcass 6 hangs down. Can be reliably prevented.
[0037]
FIG. 9 is an operation explanatory view showing another embodiment of the peg lock mechanism according to the present invention. In the embodiment shown in FIGS. 1 to 8 described above, the locked unevenness 42 d formed on the locked portion 42 c of the handle 4 is different from the locking unevenness 144 formed on the upper opening 141 a of the ring lid 14 in the case 1. Although the configuration is such that the bobbin 2 is locked by being engaged, in the embodiment shown in FIG. 9, the locked portion 42c of the handle 4 is frictionally engaged with the inner peripheral surface of the upper opening 141a. The configuration is such that the peg 2 is locked.
[0038]
In this case, for example, an annular rubber 145 is provided on the inner peripheral surface of the upper opening 141 a of the ring lid 14 in the case 1, and when the handle 4 is tilted down as shown in FIG. It is effective to bring the 42c into pressure contact with the annular rubber 145 in order to increase the friction locking force. The locked portion 42c may be formed with locked unevenness 42d as shown in FIG.
[0039]
In the above-described embodiment, an example is described in which the thread lock mechanism according to the present invention is employed in the ink basin. However, the present invention relates to a case in which powder chalk is filled and a case in which the chalk is rotatably housed. A so-called “choke line” that has a thread winding that is manually wound and wound, and in the process of being drawn out of the case, a thread with colored powder adhered thereon is stretched and flipped with a finger to draw a line with the colored powder. The same can be applied to a peg lock mechanism of a wire drawing tool called "a drawer".
[0040]
Further, in the above-described embodiment, the handle 4 for manually rotating the bobbin 2 also has the function as the lock member described in claim 1. The lock member having a structure equivalent to that obtained by removing the thread can be configured as a separate member from the means for manually rotating the bobbin 2 (for example, the end plate 22 having a finger hanging concave portion).
[0041]
【The invention's effect】
According to the peg lock mechanism according to the first aspect of the present invention, the lock member attached to the end plate of the peg is simply tilted toward the end plate, and even if the lock member is located at any position in the circumferential direction, the The locked portion is locked in the opening, and the rotation of the bobbin can be locked.
[0042]
According to the lock mechanism for a bobbin according to the second aspect of the present invention, the function of the lock member described in the first aspect is shared by a handle for manually rotating the bobbin, so that the configuration can be simplified.
[0043]
According to the thread winding lock mechanism according to the third aspect of the present invention, the locked portion of the lock member described in the first aspect and the locking unevenness formed on the inner peripheral surface of the opening of the case engage with the unevenness. Thereby, the rotation of the bobbin can be reliably locked.
[0044]
According to the pincushion lock mechanism according to the fourth aspect of the present invention, the locked portion of the lock member is locked to the inner peripheral surface of the opening of the case by frictional force, so that the rotation of the pincushion is reliably locked. Can be.
[0045]
According to the lock mechanism for a bobbin according to the fifth aspect of the present invention, since the configuration according to the first aspect is applied to the ink fountain, the bobbin is hand-fed when an appropriate tension is applied to the drawn-out blackened yarn in the blackening operation. It is possible to lock the rotation without holding it down and lock it in a state where the ink strike thread is completely wound, so that the ink strike thread is pulled out carelessly In addition, there is no need to perform the operation of fitting the swarf into the thread payout opening of the case, and the usability is significantly improved.
[Brief description of the drawings]
FIG. 1 is a plan view of a black pot showing a preferred embodiment to which a peg lock mechanism according to the present invention is applied.
FIG. 2 is a bottom view of the ink pot.
FIG. 3 is a front view of the ink pot.
FIG. 4 is a rear view showing a partial cross section of the ink bottle.
FIG. 5 is a sectional view taken along the line VV of FIG. 1;
FIG. 6 is a perspective view showing the handle 4 of the ink pot alone.
FIG. 7 is a partial perspective view showing the ring lid 14 of the ink pot alone.
FIG. 8 is an explanatory diagram of an operation of the handle 4 of the ink pot.
FIG. 9 is an operation explanatory view showing another mode of the peg lock mechanism according to the present invention.
[Explanation of symbols]
1 Case 11B Peg storage section 12a Thread feed port 14 Ring lid 141a Upper opening (opening of case)
144 locking unevenness 2 thread winding 2a storage hole 22 end plate 22a storage recess 3 black ink thread (thread)
4 Handle (locking member)
41 Shaft 42 Arm 42a Operating end 42c Locked portion 42d Locked unevenness 44 Knob member

Claims (5)

An end of the bobbin exposed outside from an opening of the case, in which a yarn is led out from a bobbin rotatably stored in a bobbin storage portion formed in a case through a thread payout opening formed in the case. A lock member is attached to the board so as to be able to make a circular motion around the axis through a shaft substantially orthogonal to the rotation axis of the bobbin. When the lock member is tilted at one end to a predetermined position, the lock member is connected to the other end. A thread winding lock mechanism, wherein a locked portion is locked at any position in a circumferential direction of the opening. 2. The peg lock mechanism according to claim 1, wherein the lock member is a handle for manually rotating the peg. The locking unevenness is formed on the locked portion of the lock member, and the locking unevenness capable of engaging with the locked unevenness is formed around the inner peripheral surface of the opening of the case. Item 2. A peg lock mechanism according to Item 1. 2. The peg lock mechanism according to claim 1, wherein the locked portion of the lock member is locked to the inner peripheral surface of the opening of the case by frictional force. The peg lock mechanism according to claim 1, wherein the case is a case of a black pot.

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