JPS6239972B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a twisting device for binding a binding band, which twists and binds a binding band such as a binding wire passed around an object to be bound, for example, grape vines and a support wire. It is related to the device.

[Conventional technology]

This type of conventional twisting device for tying cable ties is
An operating handle in which a torsion shaft with a pinion at the rear end is rotatably mounted on an outer grasping body having a U-shaped cross section, and the pinion is pivotally attached to the front end of the grasping outer shell in a manner that it can be closed and opened. It engaged with a bow-shaped rack fixed downward at the rear end.

[Problem that the invention seeks to solve]

Therefore, with conventional twisting devices for tying cable ties of this type, the twisting force is weak, and when the torsion shaft is reversed after tying, the twisted tying part may not only loosen. In order to increase the rotational speed of the torsion shaft, the arcuate rack becomes longer, and the grasping shell and operating handle also become longer, making them difficult to handle.

The present invention has been made in order to solve the above-mentioned drawbacks, and is a binding band that is strong in twisting, does not loosen the binding part by reversing the torsion shaft after binding, and is small and easy to handle. The object of the present invention is to provide a twisting device for binding.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention includes a gear case connected to the tip of the grasping outer shell, and an operating handle pivotably attached to the operating handle so as to be able to close and open the operating handle. A rack that is interlocked and reciprocated along the longitudinal direction within the grasping outer shell is interlocked and connected to a speed increasing gear device installed in the gear case with a horizontal axis orthogonal to the longitudinal direction of the grasping outer shell. , the speed increasing gear device is a helical gear device having a one-way clutch mechanism, and is mounted on a torsion shaft attached to the tip of the gear case so as to rotate around an axis along the longitudinal direction of the grasping outer shell. This is a twisting device for binding banding bands characterized by interlocking connection.

[Effect]

Since the present invention is configured as described above,
When the grasping outer body and the operating handle are grasped, the torsion shaft at the tip of the gear case approaches the twisting position of the binding band wrapped around the object to be bound, and the operating handle is closed, the rack moves forward. The speed increasing gear unit rotates at an increased speed, the one-way clutch mechanism of the helical gear unit is connected, and the torsion shaft is rotated, thereby twisting the binding band. Next, after the binding is completed, when the force to close the operating handle is released and the operating handle is returned to its original position, the rack returns to its reverse position and the speed increasing gear and helical gear are reversed, but the helical gear When the helical gear is reversed, the one-way clutch mechanism of the helical gear is disconnected, the transmission of rotation to the torsion shaft is cut off, and the bundled portion is not loosened by the torsion shaft.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

In the figure, 1 is a hollow grasping shell;
A gear case 2 is connected to the front end of the grasping outer body, and an operation handle 3 having a U-shaped cross section is pivotably attached to a pivot shaft 4 around which a torsion spring 5 is wound so that it can be opened and closed. The lower end of a link 14 that interlocks and connects a rack 12, which will be described later, is pivoted to the rear end of the handle 3 by a pivot shaft 15 around which a torsion spring 16 is wound. Reference numeral 6 denotes a speed increasing gear device disposed inside the gear case 2, and the speed increasing gear device 6 is attached to a first horizontal shaft 7 provided inside the gear case 2 at right angles to the longitudinal direction of the grasping shell 1. a first small gear 9 and a first large gear 10; It consists of 2 small gears 11. Reference numeral 12 designates a rack that meshes with the first small gear 9 and has stepped cams 36 and 37 formed in the center thereof, and a pivot shaft 13 at the rear end of the rack 12.
The upper end of the link 14 is pivotally attached to the upper end of the link 14, and a trailing roller 17 that rolls on a rail 18 protruding from the inner surface of the grasping outer body 1 is attached.

Therefore, when the operating handle 3 is closed or opened, the second horizontal shaft 8 is rotated at an increased speed via the link 14, the rack 12, and the speed increasing gear device 6.

Reference numeral 19 denotes a hollow torsion shaft mounted on the front wall of the gear case 2 so as to rotate around an axis along the longitudinal direction of the grasping outer shell 1, and the end of the torsion shaft 19 protrudes outside the gear case 2. There are two twisting claws in the part.
0 is attached, and also extends along the rear extension line of the torsion shaft 19 between the gear case 2 and the grasping shell 1, and has a rear end opening in the rear wall of the grasping shell 1. A tube 21 is arranged, and an end of the torsion shaft 19 projects into the gear case 2;
Interlocking gears 23 and 24 are attached to the front end of an intermediate vertical shaft 22 provided in the longitudinal direction of the grasping outer body 1 on the side inside the gear case 2.

25 is a helical gear device having a one-way clutch mechanism that interlocks and connects the second horizontal shaft 8 to the intermediate vertical shaft 22; 8, a small helical gear 27 that is slidably fitted on the intermediate vertical shaft 22 and has a one-way clutch pawl on the side opposite to the interlocking gears 23 and 24. , and a clutch ring 28 fixed to the intermediate longitudinal shaft 22 adjacent to the one-way clutch pawl so that the one-way clutch pawl can engage and disengage.

Therefore, in FIG. 1, when the operating handle 3 is closed, the rack 12 moves forward and the first small gear 9 as well as the first horizontal shaft 7 and the first large gear 10 are moved forward.
This first large gear 10 rotates counterclockwise.
When the large helical gear 26 is rotated clockwise in FIG. 7 via the second horizontal shaft 8 together with the second small gear 11 that meshes with the small helical gear 27, the small helical gear 27 that meshes with the large helical gear 26 rotates. A thrust force moves toward the clutch ring 28 side, and the one-way clutch pawl of the small helical gear 27 engages with the clutch ring 28, resulting in a clutch connection, which causes the torsion shaft 19 to rotate, and as described above. On the other hand, when the operating handle 3 is opened, the large helical gear 26 is rotated counterclockwise in FIG. A thrust force acting on the helical gear 27 to move it to the side opposite to the clutch ring 28 causes the one-way clutch pawl of the small helical gear 27 to disengage from the clutch ring 28, causing the clutch to disengage. Small helical gear 27
The rotation of the torsion shaft 19 is not transmitted to the intermediate vertical shaft 22, and the torsion shaft 19 is stopped.

29 is a lower roller that supports the strap, and the lower roller 29 is connected to the torsion shaft 19 and the strap guide tube 21.
It is attached to the second horizontal shaft 8 between. 30
is an upper roller that sends out the binding band in cooperation with the lower roller 29, and the upper roller 30 is pivotably mounted on a pivot shaft 32 having a torsion spring 33 wound around one side wall of the gear case 2. A rack guide roller 34 is rotatably mounted on the upper end of the swinging arm 31, and a rack guide roller 34 that rotates in contact with the upper edge of the rack 12 is rotatably mounted on the pivot shaft 32. , a stepped cam 3 formed at the lower edge of the central part of the rack 12 is provided at the lower end of the bent-shaped swinging arm 31.
A passive roller 35 that engages with the rollers 6 and 37 is rotatably mounted.

Therefore, when the operating handle 30 is closed, the upper roller 30 is separated from the lower roller 29 by the engagement between the passive roller 35 and the stepped cam 37, and conversely, the operating handle 30 is closed. During the opening operation, the upper roller 30 is brought into pressure contact with the lower roller 29 by the engagement between the driven roller 35 and the stepped cam 36.

38 is a fixed blade disposed near the protruding end of the hollow torsion shaft 19 in the gear case 2, and 39 is driven by a cutter drive plate 40 connected to the operating handle 3. It is a movable blade.

The twisting device for binding straps according to the present invention is constructed as described above, and the operating handle 3 is the first
When opened as shown, the rack 12 is retracted and the upper roller 30 is pressed against the lower roller 29. Therefore, when the operating handle 3 is slightly closed, the rack 12 moves forward via the link 14, the passive roller 35 rides on the stepped cams 36 and 37, and the upper roller 30 moves from the lower roller 29 via the swinging arm 31. be separated. In this state,
Insert the tip of a long binding band, such as a long binding line, from the rear end of the binding band guide tube 21 and pass through between the upper roller 30 and lower roller 29 and inside the hollow torsion shaft 19 to the front of the gear case 2. Then, the operating handle 3 is released and returned, and the upper roller 30 is pressed against the lower roller 29 by the force of the torsion spring 33, and the binding band is sandwiched between the upper and lower rollers 30 and 29 to prepare for binding. Complete.

Next, grasp the grasping outer body 1 and the operating handle 3 with one hand, wrap the tip of the binding band around the object to be tied, for example, a grape vine and a support wire, with the other hand, and then tighten the operating handle. 3, the rack 12 moves forward, the first pinion 9, the first horizontal shaft 7 and the first large gear 10 rotate counterclockwise, and the second pinion 11 and the second The shaft 8 and the large helical gear 26 rotate clockwise, and in FIG. 7 the large helical gear 26 rotating clockwise causes the small helical gear 27 to slide in the direction of the clutch ring 28;
As a result, the one-way clutch pawl of the small helical gear 27 engages with the clutch ring 28, resulting in a clutch connection, causing the intermediate vertical shaft 22 to rotate, and the interlocking gears 24 and 23 to rotate the torsion shaft 19. Then, the twisting claw 20 twists the binding band, and just before closing the operating handle 3, the cutter drive plate 40 drives the movable blade 39 to cut the base of the twisted band. Then, the binding work is completed.

As described above, when the rack 12 moves forward to perform the bundling operation, the lower roller 29 rotates clockwise, and the upper roller 30 rotates clockwise until the passive roller 35 rides on the stepped cam 37. However, since the pressing force by the spring 33 is weak and the tip of the binding band is wrapped around the object to be bound, slippage occurs between the upper and lower rollers, causing the binding band to be pulled back. There is no passive roller 35
When the roller 30 rides on the stepped cam 37, the upper roller 30 separates from the lower roller 29.

Next, when the force to close the operating handle 3 is released after the binding work is completed, the operating handle 3 and the movable blade 39 are returned to the state shown in FIG. 1 by the torsion spring 5, and the torsion spring 16 and link 14 Then the rack 12 moves back. In the process of the rack 12 returning backward, the small helical gear 27 is slid away from the clutch ring 28 by the large helical gear 26 rotating counterclockwise, and the one-way clutch pawl and the clutch ring 28 is released, the clutch is disconnected, and the second horizontal shaft 8
The transmission from to the intermediate vertical shaft 22 is cut off, and the torsion shaft 1
9 stops, and when the driven roller 35 enters the stepped cam 36, the upper roller 30 is pressed against the lower roller 29 by the force of the torsion spring 33, and the lower roller 29 is rotated in reverse by the speed increasing gear device 6. By rotating it counterclockwise, the binding band is fed out and prepared for the next binding. The rack 12 is guided by the rear roller 17 rolling on the rail 18 and the rack guide roller 34, and is smoothly moved forward and backward as the operating handle 3 is closed and opened.

〔Effect of the invention〕

As is clear from the above explanation, in the twisting device for binding band according to the present invention, the torsion shaft is rotated at an increased speed by a speed increasing gear device, so that Since the reciprocating stroke of the rack that drives the speed gear device can be shortened, the grasping outer shell that supports the rack and the operating handle that drives the rack can be downsized. In addition, since the speed increasing gear device and the torsion shaft are interlocked by a helical gear device having a one-way clutch mechanism, the speed increasing gear device and the helical gear device are connected to the tip of the gripping outer body. It can be stored compactly in a gear case connected to the section, and once tied, the binding band does not have to be loosened by the torsion shaft, making it easy to handle.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a vertical cross-sectional side view taken along lines A, B, C, and D in FIG. 2, and FIG. 2 is a cross-sectional plane taken along line - in FIG. 1. Figure 3 is a side view, Figure 4 is a vertical sectional elevational view taken along line E-E in Figure 1, Figure 5 is a vertical sectional elevational view taken along line GG in Figure 1, and Figure 6. is a vertical sectional elevational view taken along line HH in FIG. 1, and FIG. 7 is a longitudinal sectional elevational view taken along line FF in FIG. 1: Grasping outer body, 2: Gear case, 3: Operating handle, 6: Speed-up gear device, 7: First horizontal shaft,
8: Second horizontal shaft, 9: First pinion, 10: First large gear, 11: Second pinion, 12: Rack, 19: Twist shaft, 20: Twist pawl, 21: Binding band guide tube, 22: Intermediate vertical axis, 25: Helical gear device, 2
6: Large helical gear, 27: Small helical gear, 28:
clutch ring.

Claims (1)

[Claims] 1. A gear case is connected to the tip of the outer grasping body, and an operating handle is pivoted so that it can be opened and closed, and the inside of the grasping outer shell is moved in the longitudinal direction in conjunction with the closing/opening operation of the operating handle. The rack, which can be reciprocated along the same axis, is interlocked and connected to a speed-increasing gear device installed in the gear case at a horizontal axis perpendicular to the longitudinal direction of the grasping shell, and the speed-increasing gear device is connected to a one-way clutch mechanism. A helical gear device having a helical gear device, which is interlocked and connected to a torsion shaft attached to the tip of the gear case so as to rotate around an axis along the longitudinal direction of the grasping outer shell. twisting device.