JPS6230928Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is for binding a binding band by twisting a binding band such as a binding wire passed around an object to be bound, for example, grape vines and a support wire. This relates to a twisting device.

[Prior art] 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. An L-shaped tube is engaged with an arcuate rack fixed downwardly at the rear end thereof, and rotatably pivoted with a pin to the upper end of the tube guide member provided upright at the rear end of the grasping outer body. The upper part of the feed lever is interlocked and connected to the rear end of the operating handle, and the lower part of the L-shaped feed lever holds a flexible tube whose rear end is bent, and the flexible tube is used as a tube guide. The binding band is supported reciprocally within the grasping shell via a member, and the binding band inserted through the flexible tube is passed through the flexible tube by an L-shaped feed lever that is linked to the closing and opening of the operating handle. It was meant to be sent out.

[Problem that the invention attempts to solve]

Therefore, in this type of conventional twisting device for tying a band, since the gripping outer body and the operating handle are grasped, the twisting claw portion must be accurately approached to the position to be tied. It is difficult to hold the twisting device in a stable state while twisting the strap, and the lower end of the arcuate rack with which the pinion of the torsion shaft engages is a free end. Not only was the force weak, resulting in insufficient binding, but the L-shaped feed lever protruded rearward when the operating handle was closed, making it difficult to handle.

[Means for solving problems]

The present invention has been made to solve the above-mentioned problems, and has as its object to provide a twisting device for binding cable ties which can accurately bring the twisting claws close to the position to be bound so that twisting work can be performed in a stable state, has a strong twisting force, performs sufficient binding, and is easy to handle. In order to achieve this object, a torsion shaft is rotatably mounted on an outer shell having a pistol-shaped twisting section, the torsion shaft being formed by interlocking a torsion claw shaft with the front end of a rotating screw shaft, the rotating screw shaft is provided with a drive pin which engages with the thread groove of the shaft, and a driver is attached to the front end of the rotating screw shaft so as to be able to reciprocate freely, the driver having a rack connected to it and having a sliding cylinder fitted to the shaft, is a twisting device for tightening cable ties that is characterized in that it interlocks the upper end of a reciprocating drive force transmission rod that is pivotally supported on the lower part of the grip portion so that it can swing freely, while the reciprocating drive force transmission rod is interlocked with an operating lever that is pivotally attached to the outer casing, and a pair of upper and lower rollers and a cable tie guide tube are arranged on the side of the rotating screw shaft portion, a pinion that meshes with the rack is attached to the rotating shaft of one of the rollers, the rotating shaft is supported in a window hole provided in the outer casing so that it can move back and forth, and the other roller is rotatably supported on the outer casing, and the cable tie is fed out between the pair of rollers only when the rotating shaft of one of the rollers is positioned at the front end of the window hole.

[Action]

Since the present invention is configured as described above,
After the front end of the long strap is led out to the front of the outer body through the strap guide tube and the upper and lower rollers to complete the preparation for binding, grasp the grip and hold the tip of the outer body to the object to be bound. When the tip of the binding band is wrapped around the object to be bound with the other hand, and the operating lever is pulled toward the grip with the index finger, the driver is activated via the reciprocating driving force transmission rod. The torsion claws move backward along the axis of the rotating screw shaft that constitutes the torsion shaft, and as the driver moves backward, the torsion shaft is rotated in one direction via the drive pin, and the torsion pawl that constitutes the torsion shaft rotates in one direction. The binding band is twisted together by the shaft. Furthermore, when the operating lever is pulled toward the grip, the rack connected to the driver is moved rearward,
The rotating shaft of one roller moves together with the pinion along the window hole of the outer shell to the rear edge of the window hole, so that one roller is separated from the other roller, and then the rack is moved. According to
Even though the strap is rotated in the direction of retracting it, the strap is not moved back.

Next, after completing the binding, cut the base of the binding band,
When the torsion claw shaft is released from the binding position and the pulling force on the operating lever is released to return the operating lever, the driver moves forward along the axis of the rotating screw shaft via the reciprocating driving force transmission rod. The torsion axis is reversed. Furthermore, when the rack moves forward together with the drive element and returns, the rotating shaft of one of the rollers moves along the window hole of the outer body together with the rack together with the pinion to the front edge of the window hole. The binding band is held between the roller and the other roller, and then the binding band is sent forward in the process of the rack moving forward and returning.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In the figure, reference numeral 1 denotes an outer body for constructing a twisting device for binding a band, and the outer shell 1 is provided with a pistol-shaped grip portion 2. A torsion shaft 3 is rotated by interlocking and connecting a torsion claw shaft 4 to the front end of a rotation screw shaft 5 to be described later on the front wall 7, the intermediate wall near the front wall 7, and the rear wall 8 of the outer body 1. It is mounted freely.

By the way, the torsion claw shaft 4 has a torsion claw formed by bending the forwardly protruding tip of the front wall 7 at right angles, and the rotation screw shaft 5 has a pitch toward the rear end. It has a large thread groove 9.

In addition, in order to interlock and connect the torsion pawl shaft 4 to the front end of the rotation screw shaft 5, a shaft is attached to the front end surface of the rotation screw shaft 5 between the front wall 7 and the intermediate wall of the outer shell 1. A concave hole formed in the rear end surface of the torsion claw shaft 4 in the axial direction is rotatably fitted into the protruding shaft protruding in the core direction, and the rotating screw shaft 5 and the torsion claw shaft 4 are connected to each other. are interlocked and connected by a known one-way clutch 6 using a coil spring.

Reference numeral 10 denotes a driver fitted to the rotating screw shaft 5 so as to be able to reciprocate.
The drive element 10 is equipped with a drive pin 11 for transmitting rotational force and a pin 17 for interlocking connection with a bell crank 12 (described later), and furthermore, the driver 10 meshes with a pinion 25 (described later) and has a rotation screw at the front end. A rack 23 having a sliding tube 24 fitted onto the shaft portion 5 is arranged in series.

The bell crank 12, which serves as a reciprocating driving force transmission rod for reciprocating the driver 10 and the rack 23, is composed of a long arm 14 and a short arm 15, and is connected to a shaft 13 mounted inside the grip part 2. A pin 17 of the drive element 10 is fitted into a floating hole 16 formed at the upper end of the long arm 14, which is pivotally attached to the long arm 14 so as to be swingable. A return compression spring 21 is interposed between the short arm 15 and a spring receiver 22 fixed in the grip portion 2.

Reference numeral 18 denotes a pistol trigger-like operation lever that is swingably attached to the outer shell 1 at a shaft 19, and this operation lever 18 and the bell crank 12
It is interlocked and connected to the long arm 14 of 2 by a link 20.

Therefore, the operating lever 18 is biased by the return compression spring 21 in a direction away from the grip portion 2, that is, in a clockwise direction in FIG. It is being

Further, 25 is a pinion meshed with the rack 23, and this pinion 25 is connected to a horizontally long window hole 29 (the other one is not shown) provided in the outer body 1 along the rotating screw shaft portion 5. The upper roller 26 is fixed to a rotating shaft 28, which is supported so as to be movable back and forth. Reference numeral 27 denotes a lower roller, and when the rotating shaft 28 comes into contact with the front edge of the window hole 29, the lower roller 27
6 is rotatably supported within the outer body 1 by a support shaft.

Therefore, when the operating lever 18 is pulled toward the grip portion 2 against the return compression spring 21, the driver 1 is moved backward via the bell crank 12.
0 and the rack 23, the rotating shaft 28 is moved back together with the pinion 25, and the upper roller 26 fixed to the rotating shaft 28 is moved back and the lower roller 2
7, and then the operating lever 1
When the pulling force 8 is released, the upper roller 23 moves forward and cooperates with the lower roller 27 to remove the strap guide tube 3.
The binding band inserted through holes 0 and 31 is fed forward.

Furthermore, 32 is a cutter disposed movably up and down along the back surface of the front wall 7 of the outer shell 1 in front of the strap guide tube 30, and this cutter 32 is
Interlockingly connected to the front end of a lever-type lever 34 rotatably connected with a pin near the front end inside the outer body 1,
The rear end of this lever type lever 34 is interlocked and connected to the front end of a cutter drive plate 33 whose rising part is fitted into the rotating screw shaft 5, and the rising part of this cutter drive plate 33 and the outer A compression spring for returning the cutter drive plate is fitted between the rotating screw shaft 5 and the rear wall 8 of the body 1.

Therefore, just before the operating lever 18 is completely pulled toward the grip portion 2, the long arm 14 of the bell crank 12 comes into contact with the rising portion of the cutter drive plate 33.
The cutter 32 is raised against a compression spring for returning the cutter drive plate to cut the base of the binding band after being twisted.

Since the twisting device for tying a cable band according to the present invention is constructed as described above, first, in preparation for tying, pull the operating lever 18 toward the grip portion 2 and move the upper roller 26 backward as described later. In this state, insert the front end of the strap, such as a long wire, from the rear end of the strap guide tube 31, and pass through the upper roller 26, the lower roller 27, and the strap guide tube 30 to the front of the outer shell 1. Then, the operation lever 18 and the upper roller 26 are returned to complete the binding preparation.

Next, grasp the grip part 2, bring the front end of the outer body 1 close to the binding position, and use the other hand to wrap the tip of the binding band around the object to be bound, for example, a grape vine and a support wire. When the operating lever 18 is pulled toward the grip part 2 with the index finger, the link 20 and the bell crank 1 are
The driver 10 is moved rearward along the rotational screw shaft 5 through the long arm 14 of 2, the floating hole 16 of the long arm 14, and the pin 17 of the driver 10. Drive pin 1 engaged in groove 9
1 linearly moves along the rotating screw shaft 5, the rotating screw shaft 5 is connected to the one-way clutch 6.
rotates forward in the direction of transmitting rotational force, and the coil spring forming the one-way clutch 6 is tightly wound around the rotating screw shaft 5 and the torsion pawl shaft 4 due to the action of reducing its inner diameter. As a result, the rotation is transmitted to the twisting claw shaft 4, and the rotation of the twisting claw shaft 4 twists the binding band wrapped around the object to be bound.

Immediately before the operating lever 18 is pulled toward the grip portion 2, the cutter 32, which is raised along the back surface of the front wall 7 of the outer shell 1, cuts the base of the binding band after binding.

On the other hand, when the operating lever 18 is pulled toward the grip portion 2, the rack 23 is moved rearward together with the drive element 10, and at this time, the rotation shaft 28 of the pinion 25 and the upper roller 26, which are engaged with the rack 23, is moved backward.
The upper roller 26 is moved together with the pinion 25 and the rack 23 along the window hole 29 of the outer shell 1 to the rear edge of the window hole 29.
is separated from the lower roller 27 and then rotated counterclockwise by the rack 23, but the strap is not moved back.

Next, when the pulling force on the operating lever 18 is released, the long arm 14 of the bell crank 12 returns forward due to the restoration of the return compression spring 21, and the cutter drive plate 33 and the cutter drive plate return compression spring are restored. The cutter 32 descends and returns via the lever 34.

Furthermore, when the long arm 14 returns forward, the driver 10 moves forward and returns, thereby causing the torsion shaft to reverse. At this time, if the torsion pawl shaft 4 is caught on a binding part or the like, the torsion pawl shaft 4 will not be reversed even if the coil spring constituting the one-way clutch 6 is subjected to an action to expand its inner diameter.

Furthermore, when the rack 23 moves forward and returns together with the driver 10, the rotation shaft 2 of the upper roller 26
8 is integrated with the rack 23 together with the pinion 25 and extends along the window hole 29 of the outer shell 10.
The upper roller 26 is positioned above the lower roller 27, the upper roller 26 and the lower roller 27 sandwich the binding band, and then the rack 2
3 moves forward and returns, the upper roller 26 is rotated clockwise and the lower roller 27 is rotated counterclockwise, thereby feeding the binding band forward and preparing for the next binding operation. .

Note that if the amount of the binding band to be fed out is insufficient, the amount of the binding band to be fed out is increased by repeating the operation of the operating lever.

[Effects of the invention] As is clear from the above description, according to the invention, a. A torsion claw shaft is interlocked and connected to the front end of a rotating screw shaft to an outer shell having a pistol-shaped grip. Since the torsion shaft is rotatably mounted, the material of the torsion claw shaft can be made suitable for the torsion claw shaft, and the grip part makes it easy to aim. Therefore, the gripping claw portion can be accurately brought close to the binding position, and the twisting device can be held in a stable state during the work of twisting the binding band.

b In addition, since a driver equipped with a drive pin that engages with the thread groove of the shaft is fitted in the rotating screw shaft so that it can move back and forth, the rotating screw shaft that constitutes the torsion shaft Not only can the length of the shaft be sufficiently long, but also the pitch of the thread groove of the shaft can be increased, which not only increases the rotational torque of the torsion claw shaft but also increases the number of twists. This allows for strong twisting and sufficient binding.

c In addition, while the driver is interlocked and connected to the upper end of the reciprocating driving force transmission rod that is pivotably supported on the lower side of the grip, the driving element is connected to the upper end of the reciprocating driving force transmitting rod and the outer body. Since it is connected in conjunction with the attached operating lever, it is easy to handle and twist the binding band.

d Furthermore, the drive element is provided with a rack having a sliding tube fitted onto a rotating screw shaft at its front end, and a pair of upper and lower rollers and a pair of upper and lower rollers are arranged on the sides of the rotating screw shaft. A band guide tube is placed in front and rear of the roller, and a pinion that easily engages with the roller is attached to the rotating shaft of one of the rollers. The rollers are rotatably supported by the outer shell, and the binding band is sent out between the pair of rollers only when the rotation axis of one roller is located at the front end of the window hole. , the binding strap can be automatically sent out in conjunction with the return of the operating lever.

It has now become possible to provide a twisting device for binding straps that exhibits various excellent effects such as:

[Brief description of the drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a longitudinal sectional front view, Fig. 2 is a transverse plan view taken along the line - in Fig. 1, and Fig. 3 is an enlarged longitudinal sectional front view of the main parts. be. 1... Outer body, 2... Grip part, 3... Torsion shaft,
4... Twisting claw shaft, 5... Rotating screw shaft, 9...
...screw groove, 10...driver, 11...drive pin,
12...bell crank, 18...operation lever, 2
3... Rack, 24... Sliding cylinder, 26... Upper roller, 27... Lower roller, 28... Rotating shaft, 2
9... Window hole, 30, 31... Binding band guide tube.

Claims (1)

[Scope of utility model registration request] A torsion shaft formed by interlockingly connecting a torsion claw shaft to the front end of a rotating screw shaft is rotatably mounted on an outer shell having a pistol-shaped grip, and the rotating screw shaft has a corresponding A driver is provided with a drive pin that engages with a threaded groove of the shaft, and a front end thereof is connected with a rack having a sliding tube fitted into the shaft, and the driver is reciprocally movable. , an upper end portion of a reciprocating driving force transmission rod pivotally supported on the lower side of the grip portion is interlocked, and the reciprocating driving force transmitting rod is pivotally attached to the outer shell. Interlockingly connected to the operating lever, and on the side of the rotating screw shaft,
A pair of upper and lower rollers and a strap guide tube are arranged, a pinion that easily meshes with the rotation shaft of one of the rollers is attached, and the rotation shaft is supported in a window hole provided in the outer shell so as to be movable back and forth, The other roller is rotatably supported by the outer body, and the binding band is sent out between the pair of rollers only when the rotation axis of one roller is located at the front end of the window hole. Characteristic twisting device for binding band.