JPH09196602A - Tape winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce circumferential dimensions, to facilitate the carrying and to hold and rewind a tape at a tip side thereof. SOLUTION: This device comprises a drum body 4 which is pivotally supported with a fixing axle 6 and to which a tape 3 is wound in the circumference and a drum body 10 which is pivotally supported with a fixing axle 13 and in which a flat spiral spring 9 is installed. Each of chain wheels 7, 15 which rotate along with the drum bodies 4, 10, respectively is attached to one side of the respective drum bodies in the axle direction and a chain 16 is suspended between the chain wheels 7, 15. The drum bodies 4, 10 can interlocks with each other by the chain wheels 7, 15. A rod 22 extended from a stopping ratch 19 of a stopper device 17 moves in a groove 21 of a heart cam 20 so that the stopping ratch 19 is stopped with a stopping piece 14 of the drum body 4 or taken off therefrom.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape winding device used as a tape measure for measuring distance in athletics or measuring dimensions at a construction site.

[0002]

2. Description of the Related Art As a tape winding device provided with a device for automatically winding a tape, for example, USP 4,976,0
A tape measure as shown in Japanese Patent Publication No. 48 is known. The structure and function of such a tape measure will be outlined below.

The tape measure as disclosed in the above publication is basically constructed by housing a spiral coil spring and a tape blade in a case. Among these, the coil spring has an inner end fixed to a groove formed on the central axis of the case, and an outer end attached to the inner end of the tape blade. The tape blade is wound around the outer peripheral surface of the coil spring several times. A lock device for preventing the tape blade from being wound into the case is provided in the opening of the tape blade, and an operation unit for unlocking the lock is provided in the case of the tape measure.

As a result, when the tape blade is pulled out, the coil spring rotates and is tightly wound around the central axis, and a restoring force is generated in the coil spring. The restoring force is usually generated by the locking device attached to the case. It is suppressed. Then, when the locking device is released by the operation portion, the coil spring swells away from the central axis, and the coil spring rotates in the opposite direction to that when the tape blade is pulled out, and the tape blade is wound around the coil spring.

However, in the above tape measure structure, when a long tape blade is used, the coil spring and the tape blade have the same number of rotations, so that the coil spring is also long and the coil spring is wound around the central axis. It is necessary to take a large space that can swell away from the central axis. Moreover, the thickness of the tape blade when wound around the coil spring also increases in proportion to its length. Therefore, when using a long tape, the tape measure has a disadvantage that the case for housing the coil spring and the tape blade becomes very large, which makes it inconvenient to use and carry.

Further, in the above-mentioned tape measure structure, since the lock device and its operating portion are attached to the case of the tape measure,
Since the tape blade must be returned to the tape measure case in order to rewind the tape blade after performing the measurement operation away from the tape measure case, there is also a disadvantage that the tape blade rewinding operation is complicated.

As another known tape measure, for example, as shown in Japanese Utility Model Laid-Open No. 54-66865, there is a tape measure in which a spring and a spring are wound around different axes. The structure of this tape measure will be outlined below based on the above publication.

In this tape measure, a winding drum shaft 7 is provided in the main body case 1, and the winding drum shaft 7 is provided.
A take-up drum 3 around which a tape measure 15 is wound and a first gear 16 are axially supported by the. A gear drum shaft 8 and a main shaft 6 are provided in the main body case 1, and a second gear 17 and its gear drum 4 are pivotally supported on the gear drum shaft 8. A constant force mainspring spring 14 is stretched over the gear drum shaft 8 and the mainspring shaft 6, and an idler gear 5 that meshes with the first gear 16 and the second gear 17 is provided.

Therefore, when the tape measure 15 is pulled out, the first gear 1
6 is rotated, and this rotation is transmitted to the second gear 17 via the idler gear 5, and the constant load mainspring spring 14 is wound around the mainspring shaft 6 side. The load mainspring 14 is rotated in the reverse direction by its restoring force, and the tape measure 15 can be wound around the winding drum 3.

[0010]

However, in the structure of the tape measure disclosed in Japanese Utility Model Laid-Open No. 54-66865, the tape is wound if the tip of the tape is released. Therefore, the size or distance is measured. During recording, the tip of the tape had to be held all the time, and if the tip of the tape was inadvertently released, it was necessary to return to the main body case of the tape measure.

Therefore, according to the present invention, even when a long tape is used, by winding the spring and the tape on different axes, the outer peripheral size does not become large, and the tape is provided on the front end side of the tape for convenience of carrying. It is an object of the present invention to provide a tape winding device that can perform the winding operation of (1) and does not need to hold the tape during the measurement and recording operations.

[0012]

SUMMARY OF THE INVENTION The tape winding device according to the present invention is provided with a winding portion constituted by a rotatable drum body around which the tape is wound, and a spring as the tape is pulled out. By rotating the rotatable drum body, the winding force is applied by the spring restoring force in the direction to rewind the tape, and the winding means is stopped by loosening the pulled-out tape and pulled out again. A tape winding device having a temporary stopping means for enabling the winding means, wherein the drum body forming the winding portion and the drum body forming the winding means are supported on different shafts and wound. The drum body which constitutes the take-up portion and the drum body which constitutes the winding means are interlocked by the power transmission means (claim 1). The winding means accommodates a spring in a drum body axially supported by a fixed shaft, locks one end of the spring on the fixed shaft, and fixes the other end to the inner peripheral surface of the drum body. (Claim 2), the first drum body and the second drum body have first and second drum bodies rotatably arranged side by side on different fixed shafts. A spring may be wound around each of the body and the spring of the spring on the side of the first drum and the winding of the second drum are opposite to each other. 3).

Thus, by pulling out the tape and then loosening the tape, the temporary stopping means operates to stop the winding means, and further pulling out the tape makes the winding means effective. Therefore, even when the tape is pulled out for a long time, it is possible to easily operate the tape winding device on the end side of the tape.

Further, since the drum body forming the winding section and the drum body forming the winding means are arranged side by side on different axes, the winding section is formed even when a long tape is used. Both the drum body and the drum body that constitutes the winding means should have a slender shape that can be made smaller in outer diameter and easier to hold than when a tape is wound around the outer circumference of one drum body and a spring is stored inside it. You can

In the tape winding device, a gear or a chain wheel interlocking with the winding portion and the winding means is provided as power transmission means, and the gear ratio of the tooth number is provided in the winding portion. Alternatively, the gear or the chain wheel provided in the winding means may be larger than the chain wheel (claim 4). Incidentally, in order to interlock the gear of the winding section and the gear of the winding means, it is conceivable to directly mesh both gears or to interpose an intermediate gear therebetween. Further, in order to interlock the chain wheel of the winding section and the chain wheel of the winding means, it is conceivable to hang the chain between both chain wheels.

As a result, the number of revolutions of the second drum body becomes smaller than the number of revolutions of the first drum body, so that the length of the spring can be made shorter than that of the tape, and the outside of the second drum body can be made. Since the diameter can be reduced, the winding means can be downsized.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

The tape winding device 1 shown in FIG.
Is a tape 3 which is formed of a material such as cloth, paper or steel in the case 2 and has a hook 3a at its tip.
A drum body 4 having a spiral shape and a drum body 10 in which a mainspring 9 is housed are arranged side by side with different axes. In addition, in this embodiment, the hook 2a is provided on the outer surface of the case 2 so as to be fixed at a predetermined position.

Of these, the drum body 4 has a cylindrical shape, for example, and has a through hole 5 formed in the axial direction thereof, and a fixed shaft 6 fixed to the case 2 in the through hole 5.
Is inserted and is rotatable. Incidentally, the drum body 4
The tape 3 wrapped around the drum has a drum body 4 at the inner end.
By being fixed to the peripheral surface of the tape, the whole is prevented from being pulled out from the case of the tape measure. Further, the tape accommodating portion 2b may be provided in the case 2 so as to cover substantially the entire circumference of the tape 3 while leaving the pull-out port 8 of the tape 3. According to the above configuration, when the drum 4 is rotated by pulling out the tape 4 from the tape pull-out port 8, and when the drum 4 is rotated in the direction opposite to the pull-out direction of the tape 3, the tape 3 is It is wound around the drum body 4.

Further, the drum body 10 is, for example, of a cylindrical shape having a hollow inside, and a through hole 11 is formed in the axial direction thereof, and a fixed shaft fixed to the case 2 is formed in the through hole 11. 12 is inserted and is rotatable. The fixed shaft 12 is provided with a mainspring groove 13. The inner end of the mainspring 9 is locked in the mainspring groove 13, and the outer end of the mainspring 9 is fixed to the inner peripheral surface of the drum 10. According to the above configuration, when the drum body 10 rotates in the predetermined direction, the main spring 9 is wound around the fixed shaft 12 and contracts to generate a restoring force, and the drum body 10 rotates in the opposite direction. By the movement, the spiral spring 9 is rewound to the inner peripheral surface side of the drum body 10 to bulge and return to the original state.
A plurality of locking pieces 14 for locking locking claws 19 of a stopper device 17 described below are provided on the outer peripheral surface of the drum body 10.

In order to transmit the rotation of the drum body 4 to the drum body 10, or to transmit the rotation of the drum body 10 to the drum body 4, one side of the drum body 4 in the axial direction is connected to the drum body 4. A small chain wheel 7 that rotates in the same manner is provided, and a large chain wheel 15 that rotates in the same manner as the drum body 10 is provided on one side of the drum body 10 in the axial direction. A chain 16 is provided as a power transmission means between the and the large chain wheel 15.

A stopper device 17 is provided between the drum body 4 and the drum body 10 to temporarily stop the rotation of the drum body 4. This stopper device 17
Includes a locking claw 19 pivotally supported by a pin 18, a heart cam 20 having a groove 21, a rod 22 having one end attached to the locking claw 19 and the other end slidably contacting the groove 21 of the heart cam 20. And a spring 23 connected to the locking claw 19 side of the rod 22 in order to prevent the rod 22 from moving backward in the groove of the heart cam 20. The other end of the spring 23 is fixed to a predetermined position of the case 2 or the tape storage portion 2b. Instead of the spring 23, an elastic body made of rubber or synthetic resin, or an elastic mechanism such as an air cylinder may be used.

The groove 21 of the heart cam 20 is shown in FIG.
As shown in (b), it is composed of four groove portions 21a to 21d. Of these, the groove portion 21a has a gentle curved shape, and gradually becomes shallower toward the groove portion 21b. The groove portion 21b is composed of a steep curved portion and a linear portion, and at the boundary with the groove portion 21a, a step is formed deeper than the groove portion 21a. The groove portion 21c has a sharp curved shape by forming a recess on the inner wall, and is deeper than the groove portion 21b at the boundary with the groove portion 21b. The groove portion 21d is composed of a gently curved portion and a straight line portion protruding from the curved portion, and is deeper than the groove portion 21c at the boundary with the groove portion 21c. Furthermore, the groove portion 21d is gradually shallower from the groove portion 21c side toward the groove portion 21a side so that the boundary portion with the groove portion 21a is shallower than the groove portion 21a and a step is formed.

The function of the tape winding device 1 shown in FIG. 1 will be described based on the above configuration.

By pulling out the tape 3, the drum body 4 and the small chain wheel 7 are rotated, and the rotation of the small chain wheel 7 is transmitted to the large chain wheel 15 via the chain 16, and the large chain wheel 15 and the drum. The body 10 rotates. Along with this, the locking claw 19 rotates in the direction of the arrow in FIG. 2A against the restoring force of the spring 23 due to the recoil on the locking piece 14, so that the rod 22 moves in the direction shown in FIG. ) Move in the direction indicated by the white arrow,
The heart cam 20 moves from the groove 21a to the groove 21b. While the tape 3 is being pulled out, the rod 22
Moves reciprocally in the linear portion of the groove 21b, so that the tape 3 can be pulled out smoothly.

Next, when the tape 3 is loosened, when the locking claw 19 descends from the position on the locking piece 14 to the peripheral surface of the drum body 4, the locking claw 19 is moved in the reverse direction by the restoring force of the spring 23. The rod 22 moves in the direction shown by the white arrow in FIG.
Go to The rod 22 is shown in FIG.
As shown in FIG. 5, the inner wall of the groove 21c is locked. As a result, the locking claw 19 is fixed so that the locking piece 1
Since 4 is locked by the locking claw 19, it is possible to prevent the drum body 10 from further trying to rotate in the reverse direction due to the restoring force of the power spring 9.

Further, when the tape 3 is pulled out, the locking claw 19 rides on the locking piece 14 and the locking claw 19 resists the restoring force of the spring 23 as shown in FIG. 2 (c). Rotate. Along with this, the rod 22 moves as shown by the white arrow in FIG. 2C, and the groove portion 21c of the heart cam 20 moves.
From the groove 21d to the drum body 1 by the locking claw 19
The stop of the rotation of 0 is released. While the tape 3 is continuously pulled out, the rod 22 reciprocates in the linear portion of the groove 21d, so that the tape 3 can be pulled out again.

On the other hand, when the tip of the tape 3 is released,
When the locking claw 19 descends from the position where the locking claw 19 rides on the locking piece 14 to the peripheral surface of the drum body 4, the locking claw 19 reversely rotates due to the restoring force of the spring 23. The groove moves from the groove portion 21c to the deepest portion of the groove portion 21a by moving as shown by the white arrow in (d). While the tape 3 is being rewound, the rod 22 reciprocates between the ends of the groove 21a, so that the tape 3 can be wound around the drum body 4.

However, according to the above configuration, the tape 3
Since the tape 3 of the tape winding device 1 can be held and wound by pulling out the tape 3 or returning the tape 3 on the side of the hook 3a, the measurement and recording operations are simplified. .

Further, according to the above construction, the drum body 10 in which the mainspring 9 is housed and the drum body 4 in which the tape 3 is wound are separately constructed. The diameter of the large chain wheel 15 of 10 is made larger than the diameter of the small chain wheel 7 of the drum body 4, and the tooth ratio is changed. However, for example, the large chain car 15 and the small chain car 7
In the case where the ratio of the number of teeth is 2: 1, the rotation speed of the drum body 10 is half the rotation speed of the drum body 4, so that the length of the mainspring 9 can be half the length of the tape 3. The outer diameter of the body 10 can be reduced.

In the above description and FIG. 1,
Although the stopper device 17 has been described as a device for temporarily stopping the rotation of the drum body 4, the invention is not necessarily limited to this, and the stopper device 17 is attached to the drum body 10 to temporarily rotate the rotation. It may be used to stop.

The tape winding device 1 shown in FIG.
Is the drum body 4 on which the tape 3 is wound as described above.
The drum body 10 in which the main spring (not shown) is housed therein is arranged side by side on different fixed shafts 6 and 12 so as to be rotatable. Then, the tape 3 is pulled out from the tape pull-out opening 8 provided in the case 2. The material of the tape 3 and the drum bodies 4, 10
The form of is similar to that described above.

The rotation of the drum body 4 is transmitted to the drum body 10, or the rotation of the drum body 10 is transmitted.
A small gear 7 that rotates in the same direction as the drum body 4 is provided on one side of the drum body 4 in the axial direction, and the drum body 10 is provided on one side of the drum body 10 in the axial direction. Is provided with a large gear 15 that rotates in the same manner as
Further, between the small gear 7 and the large gear 15, an intermediate gear 24 that meshes with both the small gear 7 and the large gear 15 is axially supported by the case 2.

The drum body 4 is provided with a stopper device 25 for temporarily stopping the rotation of the drum body 4. The stopper device 25 rotates, for example, on the side opposite to the side on which the small gear 7 is provided, as shown in FIG. 3B, in the same manner as the small gear 7 and the drum body 4 and on the peripheral surface thereof. Disk body 2 with orbital cam 27 formed
6 and a rod 28, one end of which slidably contacts the orbital cam 27, and the other end of which is fixed by a support shaft portion 29 provided on the case 2.

As shown in FIG. 3B, the orbital cam 27 forms an inner circumferential annular groove by the groove 27a, the groove 27d and the groove 27e, and the groove 27b and the groove 2 are formed.
Another annular groove is formed with 7f, and both annular grooves are parallel. The orbital cam 27 is shown in FIG.
As shown in (b), in order to move from one annular groove to the other annular groove, a groove portion 27c that extends obliquely and a groove portion 27g that forms a steep curved shape by forming a recess on the inner wall side are formed.
And

The groove 27a, the groove 27d, and the groove 27e gradually become shallower in the rotating direction when the drum body 4 pulls out the tape 3, so that the disc body 2 is formed at the boundary.
In the radial direction of 6, the height gradually increases stepwise. Further, the groove 27b and the groove 27f are gradually deepened in the rotation direction when the drum body 4 pulls out the tape 3, so that at the boundary, the groove portions gradually decrease in the radial direction of the disk body 26 in a stepwise manner. Further, the groove portion 27c is formed to have the same height as the groove portions 27a and 27b at the boundary, and the groove portion 27g is one step deeper than the groove portion 27f and one step shallower than the groove portion 27d.
It is formed so as to gradually become shallower from 7f to the groove portion 27d.

The function of the tape winding device 1 shown in FIG. 3 will be described based on the above configuration.

By pulling out the tape 3, the drum body 4 and the small gear 7 rotate, and the rotation of the small gear 7 is transmitted to the large gear 15 and the drum body 10 via the intermediate gear 24,
A restoring force is generated in the coil spring 9 housed in the drum body 10, and the disc body 26 rotates together with the drum body 4.
Then, the rod 28 moves in the order of the groove portions 27f and 27b formed on the peripheral surface of the disk body 26, and further to the groove portion 27f, so that the tape 3 can be smoothly pulled out without getting caught in the step.

Next, when the tape 3 is loosened, the coil spring 9
Is transmitted to the small gear 7 through the large gear 15 and the intermediate gear 24, and the drum body 4 and the disk body 26 rotate in the reverse direction, so that the rod 28 is formed in the groove 27g by the step between the grooves 27f and 27b. And is locked at the inner wall of the groove 27g. As a result, the rod 28 is fixed,
The restoring force of the mainspring 3 can stop the drum body 4 from further rotating in the reverse direction.

Further, when the hand is released after the tape 3 is pulled out, the rod 28 is moved from the groove 27g to the groove 27d.
When the drum body 4 is stopped, the stop of the drum body 4 is released, and the groove 27d and the groove 27 are not caught by the step.
Since it moves in the order of a and the groove portion 27e, the drum body 10 is reversely rotated by the restoring force of the coil spring 9, and the tape 3 is wound around the drum body 4.

However, even with the above configuration, the tape 3 of the tape winding device 1 can be held and wound by pulling out the tape 3 or separating the tape 3 on the hook 3a side of the tape 3. Therefore, the work of measurement and recording is simplified.

Further, according to the above construction, the drum body 10 in which the mainspring 9 is housed and the drum body 4 in which the tape 3 is wound are separately constructed. Therefore, in the illustrated tape winding device, the drum is wound. The diameter of the large gear 15 of the body 10 is made larger than the diameter of the small gear 7 of the drum body 4, and the tooth ratio is changed. Accordingly, for example, when the gear ratio between the large gear 15 and the small gear 7 is 2: 1, the rotational speed of the drum body 29 is half the rotational speed of the drum body 4,
The length of the leaf spring 33 is half the length of the tape 3, and the outer diameter of the drum body 29 can be reduced.

In the above description and on FIG. 3,
Although the stopper device 25 has been described as being attached to the drum body 4 to temporarily stop the rotation, the invention is not necessarily limited to this, and the stopper device 25 is attached to the drum body 10 to temporarily stop the rotation. It may be used for.

The tape winding device 1 shown in FIG.
Has a drum body 4 in which a tape 3 is wound in the case 2 as described above, and the tape 3 wound around the drum body 4 is pulled out from a tape pull-out port 8 provided in the case 2. However, the drum bodies 29 and 30 are used instead of the drum body having the mainspring housed therein. The material of the tape 3 and the form of the drum body 4 are the same as those described above.

The drum bodies 29 and 30 both have a cylindrical shape, and have a fixed shaft 3 fixed to the case 2.
1, 32 are pivotally supported, and both are arranged in parallel with the drum body 4. And the drum body 29
A large gear 15 that is interlocked with a small gear 7 and an intermediate gear 24 is provided on one axial side of the drum body 29. By this, the rotation of the drum body 29 is transmitted to the drum body 4 and The rotation of 4 is transmitted to the drum body 29.

The leaf spring 33 is wound around the drum body 29, and the drum body 30 is connected to the drum body 2.
The drum body 29 is wound in the opposite direction so that the drum body 29 is pulled out from the drum 9 and is wound back. As a result, when the drum body 29 rotates and the plate spring 33 is wound, the drum body 30 also rotates by pulling out the plate spring 33, so that the plate spring 33 has a force to rewind on the drum body 30 side. Occurs.

In addition, the drum body 4 includes the drum body 4
In order to stop the rotation of the
4 are provided. The stopper device 34 is arranged, for example, on the side opposite to the side on which the pinion 7 is provided and also on the flange 35 provided with the rod 38, and on the outer side of the flange 35, and on the side surface thereof, a circuit with a heart cam. It is composed of a fixed disk body 36 on which a track 37 is formed. While the flange 35 rotates in the same manner as the drum body 4, the fixed disk body 36 is fixed to the case 2 and has a larger diameter than the flange 35. The orbital track 37 with a heart cam is formed at a portion of the side surface of the fixed disk body 36 that radially projects from the flange 35, and the end portion of the rod 38 is in sliding contact.

The orbital track 37 with a heart cam is shown in FIG.
As shown in (b), by having a groove portion 37a formed by a gently curved portion forming the outer peripheral track and a bent portion whose one end side is bent inward, and a curved portion and a linear portion extending obliquely, A groove portion 37b which constitutes a circumferential track and is connected to the groove portion 37a of the outer circumferential track so as to be movable between the outer circumferential track and the inner circumferential track, and one end portion of the groove portion 37a.
a gently curved groove portion 37c which is connected to b to form an inner peripheral track, and one end portion is connected to the groove portion 37c and the other end side is connected to an intermediate portion of the groove portion 37b to form an inner peripheral track. A curved groove portion 37d, a groove portion 37e that is connected to the end portion on the curved portion side of the groove portion 37a and has a recess formed on the outer peripheral wall side, and one end is connected to the groove portion 37e and the other end is the outer circumference of the groove portion 37c. Groove 37f connecting to the side
And are formed by combining three.
The groove portion 37e and the groove portion 37f are also for moving the outer peripheral track and the inner peripheral track.

The groove portion 37a is formed so as to gradually become shallower from the end portion having the bent portion to the end portion having no bent portion, whereby the groove portions adjacent to each other at the boundary not having the bent portion. It is one step shallower than 37a.
The groove portion 37b is one step shallower than the groove portion 37a at the boundary portion on the groove portion 37a side, and the groove portion 37b at the boundary portion on the groove portion 37c side.
It is one step shallower than c. The groove portion 37c is the groove portion 37b.
The groove 37d is formed so as to gradually become shallower from the side toward the groove 37d side, so that the boundary with the groove 37d is one step shallower than the groove 37d. The groove portion 37d is formed so as to gradually become shallower from the groove portion 37c side toward the groove portion 37b side, so that it is one step shallower than the groove portion 37b at the boundary with the groove portion 37b. The groove portion 37e is one step deeper than the groove portion 37a at the boundary with the groove portion 37a, and is one step shallower than the groove portion 37f at the boundary with the groove portion 37f. The groove 37f extends in an oblique direction, and the groove 37f
At the boundary with c, it is one step shallower than the groove 37c.

The function of the tape winding device 1 shown in FIG. 4 will be described based on the above configuration.

By pulling out the tape 3, the drum body 4 and the small gear 7 rotate, and the rotation of the small gear 7 is transmitted to the large gear 15 and the drum body 29 via the intermediate gear 24,
The leaf spring 33 is wound around the drum body 29. Therefore, the leaf spring 33 has a restoring force of rewinding to the drum body 30 side. In addition, the flange 35 together with the drum body 4
The rotation of the rod causes the rod 38 to move to the fixed disc body 36.
37a, 3 of the orbital track 37 with a heart cam of
Since the tapes 5a and 35a are moved in the direction of the arrow, the tape 3 can be pulled out smoothly without getting caught in the step.

Next, when the tape 3 is loosened, the leaf spring 33 is rewound from the drum body 29 to the drum body 30, whereby the drum body 29 rotates in the opposite direction, and the rotation of the drum body 29 causes the large gear 15 to rotate. Also, the drum body 4 and the flange 35 are transmitted in the reverse direction by being transmitted to the small gear 7 through the intermediate gear 24. As a result, the rod 38 moves in the direction of the arrow due to the step at the boundary between the side having the bent portion and the side not having the bent portion of the groove 37a, and is locked by the outer peripheral wall of the groove 37e. Therefore, since the flange 35 does not rotate when the rod 38 is locked, it is possible to prevent the drum body 4 interlocking with the flange 35 from further rotating in the reverse direction.

Then, when the tape 3 is pulled out,
As the rod 38 rotates, it moves in the direction in which the groove 37f extends, so that it moves from the groove portion 37e to the groove portion 37f,
The stop of the drum body 4 is released.

Next, when the tape 3 is continuously pulled out,
The rod 38 includes grooves 37e to 37c and 37d.
After that, it moves in the direction of the arrow, moves to the groove portion 37a on the outer raceway side, and moves in the direction of the arrow described at the beginning. Thereby, the tape 3 can be pulled out again.

On the other hand, when the tape 3 is released after the rod 38 is released, the rod 38 causes the inner track formed by the grooves 37c, 35c, and 35d starting from the groove 37c to be opposite to the arrow direction. Move in the direction. As a result, the restoring force of the leaf spring 33 rewinding the drum body 29 from the drum body 30 causes the drum body 4 to rotate in the reverse direction, so that the tape 3 can be wound around the drum body 4.

However, even with the above configuration, the tape 3 of the tape winding device 1 is held and wound by pulling out the tape 3 or separating the tape 3 from the hook 3a side of the tape 3. You can

Further, according to the above configuration, since the drum body 29 around which the leaf spring 33 is wound and the drum body 4 around which the tape 3 is wound are separately formed, the diameter of the large gear 15 of the drum body 29 is set to be small. The diameter of the small gear 7 of the drum body 4 is made larger to change the tooth ratio. As a result, for example, when the gear ratio of the large gear 15 and the small gear 7 is set to 2: 1, the rotation speed of the drum body 29 becomes half of the rotation speed of the drum body 4, so that the length of the leaf spring 33 increases. The length of the tape 3 is half that of the tape 3, and the outer diameter of the drum body 29 can be reduced.

In the above description and the drawings,
Although it has been described that the stopper device 34 is fixed to the case 2 to temporarily stop the rotation of the drum body 4, the invention is not necessarily limited to this, and the stopper device 34 is attached to the drum body 29. It may be used to temporarily stop the rotation of the drum body 29.

1 to 4, the means for transmitting the rotations of the different drum bodies, the means for winding the tape, and the rotation of the drum bodies are temporarily stopped. Although the tape winding device having means for achieving the above has been described, the combination thereof is not limited to the one illustrated in FIGS. For example, FIG.
In the tape winding device 1 shown in FIG.
Instead of the stopper device 17, stopper devices 25 and 34 may be used as means for stopping the rotation of the. Furthermore, it is also possible to use means for transmitting the rotation of the drum bodies, means for winding the tape, and means for temporarily stopping the rotation of the drum body, which have not been described so far. Is.

[0060]

As described above, according to the invention described in claim 1, even when the tape is pulled out, the restoring force of the spring is suppressed by the temporary stopping means, and the temporary stopping means is loosened by loosening the tape. Since it is released, the tape winding device can be easily operated on the end side of the tape even when the tape is pulled out for a long time.

According to the invention described in claim 1,
Since the drum body forming the winding section and the drum body forming the winding means are arranged side by side on different axes, the drum body forming the winding section is also wound even when a long tape is used. As for the drum body constituting the means, the outer diameter can be reduced as compared with the case where the tape is wound around the outer circumference of one drum body and the spring is housed inside the drum body, so that the tape winding device can be made into an elongated shape. , Easy to carry.

According to the second aspect of the invention, the winding means stores the spring in the drum body axially supported by the fixed shaft, and locks one end of the spring on the fixed shaft. Since the other end is fixed to the inner peripheral surface of the drum body, even if the tape is long, it can be slim and compact, and can be easily held in the hand and easily carried.

Further, according to the invention described in claim 3, the winding means is the first rotatably arranged side by side on different fixed shafts.
And a second drum body, and a spring is wound around each of the first drum body and the second drum body. The winding method of the spring on the first drum body side of the spring and the second drum body Even if the tape is long, its restoring force can be set properly because the winding direction of the tape is in the opposite direction.
The tape will not return completely due to weak resilience or it will not be dangerous due to too strong resilience.

Further, according to the invention described in claim 4, as the power transmission means, a gear or a chain wheel interlocking with the winding portion and the winding means is provided respectively, and the tooth number ratio thereof is taken up. Since the gear or the chain wheel provided in the winding means is larger than the gear or the chain wheel provided in the section, the rotational speed of the second drum body is the rotational speed of the first drum body. The length of the spring can be made shorter than that of the tape, and the outer diameter of the second drum body can be made smaller.

[Brief description of drawings]

FIG. 1 (a) is a sectional view showing a configuration of a first embodiment of a tape winding device according to the present invention.
(B) is an enlarged view showing the structure of the groove of the heart cam used in the stopper device of the tape winding device.

2 (a) to 2 (d) are explanatory views showing the movement of a locking claw used in the stopper device of the tape winding device of the above.

FIG. 3A is a perspective view showing a configuration of a second embodiment of the tape winding device according to the present invention, and FIG.
(B) is an enlarged view showing the structure of the groove of the orbital cam used in the stopper device of the tape winding device.

4 (a) is a perspective view showing a configuration of a third embodiment of the tape winding device according to the present invention, and FIG.
(B) is an enlarged view showing the structure of the groove of the orbital cam used in the stopper device of the tape winding device.

[Explanation of symbols]

 1 Tape winding device 3 Tape 4 Drum body 6 Fixed shaft 7 Small chain wheel, small gear 9 Spring spring 10 Drum body 12 Fixed shaft 13 Mainspring groove 14 Locking piece 15 Large chain wheel, Large gear 16 Chain 17 Stopper device 24 Intermediate gear 25 Stopper device 27 Orbital cam 29 Drum body 30 Drum body 31 Fixed shaft 32 Fixed shaft 33 Leaf spring 34 Stopper device 37 Circular orbit with heart cam

Claims (4)

[Claims] 1. A take-up unit formed of a rotatable drum body around which a tape is wound, and a rotatable drum body provided with a spring are rotated as the tape is pulled out, whereby the tape is rotated. To stop the winding means by loosening the tape that has been pulled back by the restoring force of the spring in the rewinding direction,
A tape winding device having a temporary stopping means for making the winding means effective by pulling it out again, wherein the drum body forming the winding portion and the drum body forming the winding means are supported by different shafts. In addition, the tape winding device is characterized in that the drum body forming the winding portion and the drum body forming the winding means are interlocked by a power transmission means. 2. The winding means stores a spring in a drum body axially supported by a fixed shaft, and locks one end of the spring on the fixed shaft and the other end of the drum body to an inner peripheral surface of the drum body. The tape winding device according to claim 1, wherein the tape winding device is configured by being fixed. 3. The winding means has first and second drum bodies rotatably arranged side by side on different fixed shafts, and each of the first drum body and the second drum body. 2. The tape winding according to claim 1, wherein a spring is wound around the spring, and the winding direction of the spring on the first drum side of the spring is opposite to the winding direction of the second drum body. Device. 4. A gear or a chain wheel interlocking with the winding section and the winding means is provided as the power transmission means, and the tooth ratio thereof is higher than that of the gear or the chain wheel provided in the winding section. The tape winding device according to claim 1, wherein a gear or a chain wheel provided in the winding means is larger.