JPH0661479U - Wire drawing tool - Google Patents

Abstract

(57) [Abstract] [Purpose] The yarn 3 can be pressed firmly against the mating material to perform accurate wire drawing, and the burrs 5 at the tip of the yarn 3
No need to replace hook 4 with. [Structure] A thread 3 is projected from one end of a case 1 to reel 2
First, the yarn delivery pipe 13 that is led out from the outside, the hook 4 that is connected to the tip of the yarn 3 that is led out therefrom, and the hook 3 that is detachably engaged with the hook 4 and that the yarn 3 is loosely inserted. And the second engaging portion 51b which is detachably engaged with the engaging portion 51a and the yarn paying-out pipe 13.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wire drawing tool for drawing a wire at a construction site by stretching a thread to which powder chalk is attached and repelling the thread in the construction field.

[0002]

[Prior art]

 As a type of tool carried by construction workers, there is a wire drawing tool that draws wire with powder chalk at the construction site. A typical conventional example of this wire drawing tool has a case filled with powdered chalk, and a reel that is rotatably incorporated in this case and winds up a thread. It has a basic structure that allows it to be pulled out through the thread feeding hole of the case. When carrying out wire drawing work using this wire drawing tool, stab the karuku at the starting point of wire drawing to fix it, and then move the case to a predetermined position, while the reel inside the case rotates. The yarn is unwound by the moving distance, and in the process of unwinding, the powder chalk in the case is attached to the thread, and the thread stretched between the shaving cases is repelled by the finger toward the surface of the mating material. To draw a line with the powdered chalk.

[0003]

[Problems to be solved by the device]

 According to the above conventional wire drawing tool, the following problems have been pointed out. For example, when flipping a thread toward the surface of a mating material with a finger, it is necessary to maintain a sufficient tension on this thread.To this end, the thread drawn out from the thread feeding hole is , And is pressed so as to be sandwiched between the end of the case where the yarn feeding hole is formed and the surface of the mating member. However, in the conventional wire drawing tool, the end of the case in which the yarn feeding hole is formed is only approximately spherical or slightly convex, so that the pressing state of the yarn becomes unstable. In addition to being easy, it was difficult to clearly see the position where the yarn was unwound, so it was often the case that the work was done relying on intuition, and only an expert could perform accurate drawing. Also, if the place where the thread is pressed is a narrow space such as a corner of the floor, it may not be possible to insert the end of the case that has the thread feeding hole. Since it is not possible to press the thread against the mating material at the edge of the case, it was necessary to press the thread only at that part with the fingertips and draw the wire in an unstable state, which was inconvenient.

[0004] Furthermore, it is easy to draw a wire with powdered chalk when it is inconvenient if a trace of the wire drawing remains, such as various boards for a floor surface, wall surface, or ceiling where a mating material is applied. It is used to enable erasure, and is used as a line drawing means for construction sites where it is inappropriate to use black ink fountain. For this reason, when positioning the board prior to attachment for cutting, it is also unsuitable to adopt the usual fastening method, such as piercing the board with a skeleton attached to the tip of the thread. Therefore, in such a case, a hook that does not damage the board must be reattached to the tip of the thread in place of the karuko, and this thread must be inside the case by the reel biased in the winding direction. Since it was pulled toward, the work of replacing the hook was very troublesome.

The present invention has been made under the circumstances as described above, and its technical problem is that the yarn can be reliably pressed against the mating material to perform accurate drawing. The point is that the tip of the thread and the replacement of the hook are unnecessary.

[0006]

[Means for Solving the Problems]

 The above technical problems can be effectively solved by the present invention. That is, the wire drawing tool according to the present invention includes a case filled with powder choke, a reel rotatably housed in the case and urged in a winding direction of the yarn, and a reel projecting from one end of the case. A yarn delivery pipe for delivering the yarn from the reel to the outside of the case, a hook connected to the tip of the yarn delivered from the yarn delivery pipe, and detachably engaged with the hook. In addition, a first engaging portion into which the yarn is loosely inserted and a second engaging portion that is detachably engaged with the yarn feeding pipe are formed.

[0007]

[Action]

 In this wire drawing tool, during normal storage and carrying, the karuko is locked at the second engaging portion by the thread delivery pipe of the case, and the hook connected to the tip of the thread is It is locked to the tip of the yarn delivery pipe by the urging force of the reel in the yarn winding direction, and when the first engaging portion of the karuko is engaged with the hook, Is prevented from falling off. When using a hook as a thread fastening device for wire drawing work, pull out the hook from the tip of the thread delivery pipe and hook it on the edge of the mating material to deliver the thread, and the karuko is locked to the thread delivery pipe. Leave it as it was. Also, when using a ark as a thread fastening means, pull out the ark from the tip of the thread delivery pipe and stab it at the starting point of wire drawing on the mating material. At this time, the hook is engaged with the first engaging portion of the thread by the urging force of the reel in the thread winding direction, so that the hook is pulled out integrally from the tip of the thread delivery pipe, Is paid out. After the wire drawing is completed, if the thread is not fastened to the mating material by the hook or the scraper, the hook and the scrap are automatically locked by the reel winding. Will be restored.

[0008]

【Example】

 Hereinafter, the structure of an embodiment of the wire drawing tool according to the present invention will be described together with its operation with reference to the drawings. First, in FIGS. 1 and 2, reference numeral 1 is a case, and the case 1 is a main body. 1A and a cover 1B that opens and closes the upper opening thereof. The main body 1A includes a pair of case members 11 and 12 in close contact with each other on a split surface extending in the longitudinal direction, a yarn delivery pipe 13, a support ring 14 that supports the yarn delivery pipe 13 between the front ends of the case members 11 and 12, and a rear ring. It consists of an end decoration cap 15. One end of the cover 1B is opened and closed with the hinge portion 16 as a fulcrum, and the free end of the cover 1B is kept closed from the upper opening of the main body 1A by a locking member 17 rotatably provided on the main body 1A. Retained. In addition, on the inner circumference of the yarn paying-out pipe 13, it is possible to prevent powder chalk attached to the yarn 3 in the case 1 from falling off from the yarn 3 when passing through the inside of the yarn paying-out pipe 13, A guide pipe 13a is provided for preventing the charged powder chalk from leaking from the yarn delivery pipe 13.

Reference numeral 2 is a reel in which the yarn 3 is rotatably incorporated in the case 1 and the yarn 3 is wound around the outer periphery, and a winding spring for winding the yarn 3 by a spiral spring (not shown) provided on the inner periphery thereof. Always biased in the direction. The reel 2 is supported by a swing end of an arm 22 that is swingably provided in the case 1 about a support shaft 21 parallel to the rotation axis of the reel 2 and on the side surface of the case member 11. It is connected to a disc-shaped handle 23 arranged on the outside through an operation hole (not shown) formed, and by operating this handle 23, as shown by arrows X and X'in the figure, the spindle 21 The inside of Case 1 can be displaced with the fulcrum as a fulcrum. A space between the handle 23 and the operation hole is sealed with an appropriate packing, and a slide ring 24 is mounted on the outer peripheral surface of the handle 23 in a state of being relatively rotatable and prevented from coming off. .

Reference numeral 4 is a hook formed by punching out a metal plate, and 5 is a substantially cylindrical synthetic resin material knob piece that is substantially the same as or slightly longer than the protruding length of the yarn delivery pipe 13 of the case 1. This is a skeleton consisting of 51 and a needle 52 protruding from one end in the longitudinal direction. As a first engaging portion, a hollow portion 51a which can be fitted into the outer circumference of the yarn paying-out pipe 13 is formed through the knob piece 51 of the carcass 5 in the longitudinal direction. At the opposite end, a slit 51b is formed as a second engaging portion, which is capable of accommodating the hook 4 and is arranged in four circumferentially equidistant directions. Further, a thread guide groove is provided between the slits 51b. 51c is formed. The tip of the thread 3 wound around the reel 2 is led out to the outside of the case 1 through the thread delivery pipe 13, and further, from the needle 51 side of the karuku 5 through the hollow portion 51a of the knob piece 51 and the hook 4 Is attached to.

In the wire drawing tool configured as described above, the cover 1B is opened and the case 1 is filled with an appropriate amount of powder choke in advance. During normal storage and carrying, as shown in FIG. 3, the karuko 5 is locked in the hollow portion 51a of the knob piece 51 so as to be fitted into the yarn delivery pipe 13 of the case 1. The hook 4 is locked to the tip of the yarn delivery pipe 13 by pulling the yarn 3 into the case by the urging force of the reel 2 in the yarn winding direction.

When drawing, the case 4 is moved to a predetermined position after the tip of the thread 3 is fixed to the mating material by the hook 4 or the scraper 5. As a result, the reel 2 inside the case 1 rotates in the yarn delivering direction, and the yarn 3 is delivered through the yarn delivering pipe 13. Along with the rotation of the reel 2 at this time, the spiral spring that urges the reel 2 in the yarn winding direction is stored, so that an appropriate tension is applied to the unwound yarn 3. When the yarn 3 is fed out, the handle 23 is pushed down in the direction of the arrow X to bring the reel 2 into sliding contact with the powder choke reservoir existing in the lower part of the case 1, so that the remaining amount of the powder chalk can be determined. In spite of the decrease in the winding radius of the remaining thread 3 on the outer circumference of the reel 2, it is possible to reliably attach the necessary and sufficient amount of powder chalk for drawing.

When the mating member is a decorative board or the like for which it is improper to pierce the hook 5 as a fastening means for the tip of the thread 3 when the thread 3 is fed out, as shown in FIG. The thread 5 is left fitted in the thread paying-out pipe 13, and only the hook 4 is pulled from the tip of the thread paying-out pipe 13 to be hooked on the edge A1 of the mating material A. Then, when the case 1 is moved to a predetermined position, as shown in FIG. 5, the case 1 is erected on the mating material A, and the needle 51 is attached to the knob piece 51 of the karuko 5 fitted in the yarn delivery pipe 13. The end of 51 opposite to the protruding direction is pressed against the surface of the mating member A. As a result, the thread 3 is stretched from the tip of the thread delivery pipe 13 through the slit 51b of the knob piece 51 or the thread guide groove 51c so as to be in close proximity to the mating material A. By flipping, powder chalk is struck on the surface of the counterpart material A, and a clear line is drawn.

When the mating material A is a base material or the like which can use the karuku 5, the karuku 5 is pulled out from the yarn paying-out pipe 13. At this time, as shown in FIG. 6, the hooks 4 which were locked at the tips of the yarn paying-out pipes 13 are circumscribed by the pulling force of the yarns 3 into the case 1 so that the knob pieces 51 of the carcass 5 are rotated around each other. It is locked in the state of being accommodated in the slit 51b at a position of 180 ° in the direction and is pulled out integrally with the carcass 5. Next, as shown in FIG. 7, when the case 52 was moved after the needle 52 of the karuko 5 was pierced into the mating material A, it was attached to the hook 4 in the locked state on the karuko 5. The yarn 3 is delivered from the tip of the yarn delivery pipe 13 by the moving distance of the case 1. When the case 1 is moved to a predetermined position, it is erected on the mating material A and the tip of the yarn paying-out pipe 13 is pressed against the surface of the mating material A so that the thread 3 is sandwiched between the mating material A and the mating material A. Then, the yarn 3 is repelled and the wire is drawn in the same manner as described above. In this case, even if the place where the yarn 3 is pressed is a narrow space such as a corner of the floor, the yarn delivery pipe 13 can be inserted into this space and the yarn 3 can be easily pressed against the partner material A.

After the wire drawing work is completed, the case 1 is moved away from the mating material A toward the fixed end side of the thread 3 by the hook 4 or the scale 5, so that the stored spiral spring is attached. Due to the force, the reel 2 rotates in the yarn winding direction, and the yarn 1 is drawn into the case 1 from the yarn delivery pipe 13. At this time, since the reel 2 can be lifted by operating the handle 23 in the direction of the arrow X ′ in FIG. 1, the reel 2 can be completely brought into non-contact with the powder choke reservoir in the lower part of the case 1. The rolling resistance of the reel 2 can be made extremely smooth by reducing the sliding resistance with the powder choke to zero. Since the handle 23 rotates integrally with the reel 2, the handle 23 may be operated by pinching the slide ring 24 loosely fitted on the outer periphery thereof. When the case 1 is moved to the vicinity of the fixed end of the thread 3, the hook 4 or the scraper 5 is removed from the mating material A, and the hook 4 and the scraper 5 are separated by the winding rotation of the reel 2. It is pulled together with 3 and is automatically returned to the locked state by the yarn delivery pipe 13.

[0016]

[Effect of device]

 According to the wire drawing tool of the present invention, when the hook is used as a means for fixing the tip of the thread to the mating material when the thread is unwound from the case, only the hook remains in the state in which the karuko is retained on the thread unwinding pipe. By pulling out the thread, the thread tied to this hook is fed out.When using a karuko as a means to fasten the thread tip, pull it out from the tip of the thread feeding pipe and Since the hook is engaged with the engaging part of the thread and the hook is also pulled out and the thread is fed out, the complicated work of changing the tip of the thread depending on the type of the mating material and changing the hook. It is unnecessary and has an excellent effect that the yarn can be easily pressed down by the yarn feeding pipe even in a narrow space.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a wire drawing tool according to the present invention.

FIG. 2 is a sectional view of an essential part of the above embodiment.

FIG. 3 is a perspective view of an essential part showing a non-use state in the above embodiment.

FIG. 4 is a perspective view of an essential part showing a state in which a hook is hooked on a mating member and a thread is pulled out in the embodiment.

FIG. 5 is a perspective view of relevant parts showing a state in which the case is stood up from the state of FIG.

FIG. 6 is a perspective view of essential parts showing a state in which the silkworm in the above embodiment is pulled out from the yarn feeding pipe and the yarn is pulled out.

FIG. 7 is a perspective view of relevant parts showing a state in which the case is erected from the state of FIG. 6 and the thread is stretched on the mating member.

[Explanation of symbols]

 1 Case 13 Thread Delivery Pipe 2 Reel 3 Thread 4 Hook 5 Karuko 51a Hollow Part (First Engagement Part) 51b Slit (Second Engagement Part)

Claims (1)

[Scope of utility model registration request] 1. A case filled with powdered chalk, a reel rotatably housed in the case and biased in a direction for winding a yarn, and a yarn projecting from one end of the case to remove the yarn from the reel. A yarn delivery pipe leading out of the case, a hook connected to the tip of the yarn led out from the yarn delivery pipe, a hook detachably engaged with the hook, and the yarn loosely inserted. A wire drawing tool comprising: a first engaging portion and a second engaging portion that is detachably engaged with the yarn feeding pipe.