JPH074787Y2 - Covered wire terminal winding tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a winding tool for winding and connecting jumper wires, cables, etc. around the terminals of a terminal plate, and particularly to removing the coating of the coated wire and at the same time The present invention relates to a terminal winding tool for a covered wire in which a cutter that enables winding is incorporated in the winding tool.

[Prior Art] Various communication equipments and devices in the communication equipments are connected by jumper wires, cable wires, etc. to organize the correspondences of the equipments or equipments in order and to facilitate the change. Switchboards are being developed. The switchboard has an important role in terms of coordinating each equipment, and it is also a demarcation point of each equipment because it is located in the middle of each equipment.

In such a switchboard, measures such as subscriber relocation, line opening, and traffic load adjustment are dealt with by changing the jumper wire installation.Therefore, there is a lot of work to install jumper wires in terms of daily maintenance and operation. Is being requested. For this reason, various terminal boards with different numbers of rows and stages of connection terminals have been developed to be used for connection parts of cables and jumper wires in switchboards, and to connect cables with different numbers of core wires in a well organized manner. .

As shown in FIG. 7, a terminal plate for winding (wrapping) in which rod-shaped terminals 1 are erected at intervals in the width direction and the longitudinal direction of the terminal plate 2 for the purpose of improving the terminal density. 2 is known. When winding a Japan wire or the like around each terminal of this type of terminal board 2, a winding tool has been recently developed in order to improve the workability.

As shown in FIG. 8, this winding tool is composed of a gun-shaped tool main body 3, a winding portion 4 for setting a covered wire A such as a jumper wire, and a trigger portion 5 for operating the winding portion 4. By operating the portion 5, the bare wire can be easily and firmly wound around the terminal 1.

The configuration and operation (operation) of each part of the winding tool will be described below.

(A) Winding part The winding part 4 is composed of a cylindrical holder 7 fixed to the tool body 3 by a check body 21 (both will be described later), and a rotary shaft body 8 housed in the holder 7. The outer diameter of the rotating shaft 8 and the inner diameter of the holder 7 are formed with a minute clearance in the radial direction, and as a result, the rotating shaft 8 is rotatable with respect to the holder 7. The holder 7 is formed to have a taper angle that is gentle from the front end toward the rear end. A notch groove 9 for locking a jumper wire or the like is formed at both ends of the holder 7 in the radial direction as shown in FIG. 9, and a direction orthogonal to a line connecting both notch grooves 9 is formed. At the tip of the holder 7, there is formed a line guide portion 10 which is bulged outward in the radial direction of the holder 7 and whose inner surface is a circular arc surface. The rotary shaft body 8 is opened from its tip and has a certain depth in the axial direction.
Is formed with a terminal engaging hole 11 for removably engaging with each terminal 1 of the terminal plate 2, and while the core wire is engaged with the tip end surface thereof, the direction of the core wire is in the involute direction. A concave portion 12 for guiding the regulation is formed. An insertion groove 13 for accommodating a core wire or the like is formed on the outer peripheral surface of the rotary shaft body 8 along the axial direction of the rotary shaft body 8 from the tip thereof. The position of the insertion groove 13 in the circumferential direction is equal to
The gaps in the longitudinal direction of the insertion grooves 13 are formed substantially in the middle of the formation positions of 12 and are uniquely determined based on the required number of windings of the core wire (jumper wire or the like in which the coating is removed to leave a bare state) around the terminal 1. It is determined. The longitudinal cross section of the groove with respect to the axial direction is formed in a circular arc shape with a uniform cross section, and the groove interval is set such that the core wire is in the axial direction of the rotary shaft body 8 when the rotary shaft body 8 is housed in the holder 7. It is formed with a space that allows it to move back and forth. Further, the rotary shaft body 8 integrally has a shaft portion 14 on the rear end side thereof, the shaft portion 14 being radially expanded with respect to the front end side. The shaft portion 14 has, at its rear end, a notch portion 17 defined by an upright surface 15 extending inward in the radial direction and a horizontal surface 16 continuously connected to the upright surface 15. By the way, in preparation for winding around the terminal 1, insert a core wire having a length corresponding to the length of the insertion groove 13 to a position where the tip (on the shaft side) of the insertion groove 13 hits, and bend the rear end portion of the core wire at that position. Then, the groove 9 is engaged with the cutout groove 9 to finish. Then, the winding work is completed by fitting the terminal engaging hole 11 into the terminal 1 and then rotating the rotary shaft body 8. That is, when the rotating shaft body 8 is rotated for the first time, the core wire moves to the terminal 1.
It rotates around and winds around the base end side of the terminal 1 to form a first winding row. Then, subsequent successive rotations form a winding row that is in close contact with the previous winding row. In this manner, n winding rows are sequentially formed. Then, as a result of the winding formation, the holder 7
The rotary shaft body 8 is naturally and sequentially separated from the basic end of the terminal 1 in accordance with the winding formation. The degree of winding force of the core wire around the terminal 1 is determined by the distance between the insertion groove 13 and the notch 9.

(B) Tool main body part The tool main body part 3 is roughly classified into a holder holding part 18 for holding and fixing the holder 7, a power transmission mechanism accommodating part 19, and a gripping part 20.
It is composed of and. The holder gripping portion 18 includes a chuck body 21 formed with slits (not shown) for allowing the rear end side of the holder 7 to be fitted in and disengaged from each other in the radial direction, and an outer circumference of the chuck body 21. The nut member 22 is screwed into a male screw formed along the surface to narrow the width of the slit in the circumferential direction, and as a result, the chuck body 21 and the holder 7 are integrated. A joint shaft 23 is rotatably housed in the front portion of the power transmission mechanism housing portion 19, which is the rear portion of the chuck body 21. The joint shaft 23 has an engaging portion 24 that engages with the cutout portion 17 of the shaft portion 14 in the front portion, and is integrally formed with a small bevel gear 25 for transmitting driving force in the rear portion thereof.
That is, when the joint shaft 23 is engaged with the cutout portion 17, the rotational driving force transmitted to the small bevel gear 25 for driving force transmission can be transmitted to the shaft portion 14. A large bevel gear 26 that meshes with the small bevel gear 25 is rotatably accommodated in the power transmission mechanism accommodating portion 19. Large bevel gear 26
Is formed integrally with the pinion gear 27 on the same axis. A slide groove 28 for slidably engaging a trigger, which will be described later, is formed in the lower portion of the power transmission mechanism housing 19.
Is formed. On the other hand, at the rear part of the power transmission mechanism housing portion 19, a grip portion 20 is integrally formed under the power transmission mechanism housing portion 19. A pivot portion, which will be described later, is formed at the end (lower end) of the grip portion 20.

Therefore, large and small bevel gears 26 and 25 and pinion gear 2
When the gear ratio of 7 is set appropriately, the shaft portion 14 is rotated at that gear ratio.

(C) Trigger Unit The trigger unit 5 is composed of a plate-shaped trigger 29, a torsion coil spring 30 for constantly operating the trigger 29 in the returning direction, and a grip member 31 integrally provided on both sides of the trigger 5.

One end of the trigger 29 is rotatably supported by the pivot shaft 32, and the other end is engaged with the slide groove 28. This trigger 29
Has integrally a rack 33 meshed with the pinion gear 27 at the other end housed in the power transmission mechanism housing portion 19. The rack 33 rotates the pinion gear 27 by the stroke of the rack 33 when the trigger 29 is rotated in a direction approaching the grip 5. The torsion coil spring 30 is attached to the pivot shaft 32, and both arms thereof are locked to the grip portion 5 and the grip member 31 to apply a biasing force to the rack 33 in the returning direction. Therefore, when the trigger 29 is rotated, the pinion gear 26 is operated by the rack 33, and the rotary shaft body 8 is finally rotated a plurality of times.

Therefore, when the winding tool having such a configuration is used, the core wire such as the jumper wire can be wound around the terminal 1 a predetermined number of times with an appropriate winding force, and the workability of winding the jumper wire or the like is significantly improved. .

[Problems to be solved by the invention] However, in winding (lapping), it is troublesome to remove the coating such as the jumper wire each time the winding is performed, and it is necessary to develop a winding tool capable of removing the coating simultaneously with the lapping. It was being done.

[Means for Solving the Problems] The present invention has an object to solve the above problems, and has a terminal engaging hole for fitting and withdrawing a rod-shaped terminal in a shaft, and a jumper wire or the like is axially provided on an outer peripheral surface of the shaft. A rotary shaft body having an insertion groove for accommodating along with it, a holder for rotatably housing this rotary shaft body, and a covered wire formed at the tip of the holder for applying a tension as a rotational reaction force to the covered wire. In a terminal winding tool such as a jumper wire having a notched groove for bending and locking the insertion rear part, a cutting blade that cuts into the coating by cutting into the coating of the coated wire in the rotary shaft body on the most distal side A cutter having the above is pivotally supported, and an opening is formed in the holder so that the rotating end side of the cutter can be protruded from the holder to form a terminal winding tool for a covered wire.

[Operation] When the rotating end side of the cutter is projected in the radial direction from the opening of the holder, the cutting blade of the cutter separates from the insertion groove.
In this state, insert the covered wire such as jumper wire into the insertion groove,
The rear end side of the covered wire is engaged with the notch of the holder, and the rod-shaped terminal is fitted with the terminal engagement hole. Then, the rotary shaft is rotated. Then, the cutter abuts on the circumferential end of the opening and is accommodated in the cutter to form a cut in the covering wire of the insertion groove. At the same time, the coating is stripped off by the tension of the coated wire between the notch groove and the insertion groove caused by the rotation of the rotary shaft. That is, the cutter forms a cut in the coating and, at the same time, restricts the movement of the coating. Therefore, only the core wire is wrapped around the terminal. The winding force of the core wire corresponds to the above tension.

[Embodiment] A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. However, since the tool body 3 and the trigger portion 5 are the same as those in the conventional example, detailed description thereof will be omitted and only the winding portion 4 will be described. The structure will be described in detail.

(Embodiment 1) As described in FIG. 8, the winding part 4 has a cylindrical holder 7 fixed to the tool body 3 by the chuck body 21, and a rotary shaft body housed in the holder 7. 8 and is formed with a minute clearance in the radial direction between the outer diameter of the rotary shaft body 8 and the inner diameter of the holder 7.

As shown in FIG. 1, the holder 7 is formed so as to have a taper angle that is gentle from the front end toward the rear end, and the front end of the holder 7 is provided at both positions in the radial direction for locking the jumper wire or the like. Notch groove 9 is formed, and at the tip of the holder 7 in the direction orthogonal to the line connecting both notch grooves 9, a wire guide portion is bulged outward in the radial direction for inserting the covered wire A.
10 are formed. In other words, the line guide portion 10 is formed larger by the amount of the covering than the conventional one. As shown in FIGS. 1 to 3, the rotary shaft body 8 has the terminal plate 2
Terminal engaging holes for removably engaging with each terminal 1 of
11 are formed. Then, on the outer peripheral surface of the rotary shaft body 8,
An insertion groove 13 is formed for accommodating the covered wire A (jumper wire, cable wire, etc.) in which the covering is not removed along the axial direction of the rotary shaft body 8. The interval between the insertion grooves 13 in the longitudinal direction is uniquely determined based on the required number of windings of the covered wire A or the like around the terminal 1. The vertical cross section of the insertion groove 13 with respect to the axial direction is formed in a circular arc shape having a uniform cross section, and its interval is formed so as to allow the covered wire A to move back and forth in the axial direction of the rotary shaft body 8. . further,
The rear end side of the rotary shaft body 8 has a shaft portion whose diameter is expanded with respect to the front end side.
14 integrally. The shaft portion 14 has, at its rear end, a notch portion 17 defined by an upright surface 15 extending inward in the radial direction and a horizontal surface 16 continuously connected to the upright surface 15.

An object of the present invention is to remove the coating by the winding part 4 and to firmly wind the core wire around the terminal 1.

Therefore, as shown in FIG. 1 and FIG.
A cutter accommodating groove 34 having a predetermined depth in the radial direction and having a capacity for accommodating a cutter (described later) in the rotary shaft body 8 is formed at the most distal end position of the. In this embodiment, the cutter accommodating groove
34 is a semi-circular first accommodating groove 36 whose groove bottom 35 is tangential to the terminal engaging hole 11 and is formed continuously with the first accommodating groove 36 in the radial direction. It is composed of a second accommodating groove 37 having a volume surrounding the insertion groove 13. On the other hand, in the rotary shaft body 8, an axial screw insertion hole 38 passing through the opposite end of the second accommodation groove 36 is formed. Screw insertion hole 38
A female screw 39 is formed in the middle of its axial direction. A screw member 41 that is screwed into the female screw 39 is screwed into the screw insertion hole 38.

As shown in FIG. 2, the cutter 42 is formed by bending an L-shape from a strip plate, and has a shaft hole 43 through which the screw member 41 penetrates at the other side end. The bend of the cutter 42 is
When one side end of the width direction 42 (indicating the inner end in the radial direction) is seated on the groove bottom 35 of the cutter housing groove 34, the bent portion 44 is completely housed in the cutter housing groove 34. It is bent at a certain position. Then, at the position where one side end of the cutter 42 in the width direction is seated on the groove bottom 35 of the cutter accommodating groove 34, the insertion groove is formed.
A semicircular cutting blade 45 formed so as to surround the covered wire A inserted into the insertion groove 13 is formed in the bent portion 44 at a position corresponding to 13. The blade length of the cutting blade 45 is a blade length dimension capable of forming a cut in the coating without damaging the core wire of the coated wire A. Therefore, when the screw member 41 is inserted into the shaft hole 43 of the cutter 42 engaged with the cutter accommodating groove 34 and the screw member 41 is screwed into the female screw 39, the cutter 42 is rotatable with respect to the cutter accommodating groove 34. Becomes A spring accommodating hole 46 is axially formed in the rotary shaft body 8 between the insertion groove 13 and the terminal engaging hole 11. A return spring 47 is accommodated in the spring accommodating hole 46 so as to come into contact with one end of the cutter 42 and rotate outward in the radial direction of the cutter 42. Then, as shown in FIG. 1, the holder 7 has an opening 48 for exposing the bending portion 44 to the outside of the holder 7 when the bending portion 44 of the cutter 42 is encountered at a position facing the bending portion 44.
Is formed. That is, the opening 48 is for separating the cutting blade 45 from the insertion groove 13 and allowing the covered wire A to be inserted into the insertion groove 13. Therefore, in the return position of the trigger 29, the position of the opening 48 and the position of the cutter 42 are made to coincide with each other, the covered wire A is inserted, and when the rotary shaft body 8 is rotated after the insertion, the cutter is attached to the circumferential end of the opening 48. 42 is engaged and reinserted into the holder 7 to form a cut in the coating.
Then, the tension applied to the coating by the rotation of the rotary shaft 8 acts on the cut to relatively and mechanically separate the coating. A discharge port 49 is formed in the holder 7 at a position corresponding to the rear end of the insertion groove 13. The rear end side of the insertion groove 13 is formed deeper than the middle thereof with respect to the front end side, and the rear end side of the insertion groove 13 is sequentially formed shallower along the axial direction. As a result, the stripped coating is
It is sent well along the line 13 and is surely discharged from the discharge port 49.

Next, the operation will be described.

The cutter 42 is constantly biased outward in the radial direction by the return spring 47. Before winding, when the rotation position of the rotary shaft 8 is set to a position where the opening 48 and the bent portion 44 coincide with each other, the bent portion 42 is forcibly protruded in the radial direction from the opening 48 by the urging force of the return spring 47. As a result, the cutting blade 45 of the cutter 42 is separated from the insertion groove 13 so that the covered wire A can be freely inserted into and removed from the insertion groove 13. In this state, the covered wire A such as a jumper wire is inserted into the insertion groove 13, the rear side of the covered wire A is locked in the cutout groove 9 of the holder 7, and the rod-shaped terminal 1 is fitted with the terminal engaging hole 11. Let Then, the rotary shaft body 8 is rotated. Then the cutter 42
Is accommodated in the cutter 42 against the biasing force of the return spring 47 by abutting against the circumferential end of the opening, and forms a cut with respect to the coating of the coating wire A of the insertion groove 13. . At the same time, as the rotary shaft 8 is rotated, the tension acting on the coated wire A between the notch groove 9 and the insertion groove 13 acts on the cut of the coating as it is, and the coating is stripped off by the cutting edge 45. That is, the cutter 42 forms a cut in the coating and, at the same time, restricts the movement of the coating. Therefore, with the coating left in the insertion groove 13, a winding wire of the core wire is formed on the terminal 1 by a winding force according to the tension.

(Example 2) This example is a modification of the above example.
In this embodiment, the description of the same parts as those in the above embodiment will be omitted.

As shown in FIG. 4, in this embodiment, the first housing groove 36 formed in the rotary shaft body 8 is formed as a ring-shaped first housing groove 36 along the circumferential direction of the rotary shaft body 8, As shown in FIG. 6, locking grooves 50 are formed in the groove bottom 35 of the ring receiving groove 36 at circumferential intervals. Then, the cutter 42 is formed from a metal plate material having elasticity into a snap ring shape which engages with the first receiving groove 36 as shown in FIG. 5, and is positioned at one end of the cutter 42 and a position in the radial direction with respect to the one end. Engaging projections 51 that are fitted in the locking grooves to restrict the movement of the cutter 42 in the circumferential direction are formed. Further, as shown in FIG. 5, the cutter 42 is provided with an engaging projection on the inner side in the radial direction.
It is formed by expanding the other end side from 51 toward the outer side in the radial direction with respect to the one end side, and forming the cutting blade 45 on the tip end side thereof.

On the other hand, the tip side of the holder 7 is formed with an opening 48 for causing the expanded portion side of the cutter 42 to project radially outward, as in the first embodiment.

By forming the cutter 42 in this way, the cutter 42 has the same functions (actions and effects) as those of the first embodiment, and the return spring 47, the spring accommodating hole 46, the screw insertion hole 38, and the screw member of the first embodiment. 41 can be abolished, and a large cost reduction will be possible.

[Effect of the Invention] As is apparent from the above description, the present invention has the following excellent effects.

A rotating shaft body having a terminal engaging hole for inserting and removing the rod-shaped terminal in the shaft, and an insertion groove for accommodating a jumper wire or the like along the axial direction on the outer peripheral surface of the shaft, and the rotating shaft body being rotatable. In a terminal winding tool such as a jumper wire having a holder for accommodating and a notch groove formed at the tip of the holder to bend and lock the rear portion of the insertion portion of the covered wire in order to apply tension as a rotational reaction force to the covered wire. , A cutter having a cutting blade that bites into the coating of the coated wire and forms a cut in the coating is rotatably supported in the rotary shaft body on the most distal side, and the cutter is projected from the holder to the holder. Since the tool for winding the coated wire terminal is configured by forming a flexible opening, the coating can be removed and the core wire can be wound well while rotating the rotating shaft, greatly improving work efficiency and reliability of the core wire. You can improve the property.

[Brief description of drawings]

1 is a sectional view showing a first embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is a III-I of FIG.
II line arrow view, FIG. 4 is a partially broken sectional view showing another embodiment of the rotary shaft body, FIG. 5 is a front view showing another embodiment of the cutter,
6 is a perspective view taken along the line VI-VI of FIG. 4, FIG. 7 is a perspective view showing a terminal plate, FIG. 8 is a sectional view showing a conventional example, and FIG. 9 is a partially enlarged view showing a notched groove. is there. In the figure, 7 is a holder, 8 is a rotary shaft, 9 is a groove, 11 is a terminal engaging hole, 13 is an insertion groove, 42 is a cutter, 45 is a cutting blade,
48 is an opening.

Claims (1)

[Scope of utility model registration request] 1. A rotary shaft body having an engaging hole for a terminal to be inserted into and removed from a rod-like terminal in the shaft, and an insertion groove for accommodating a jumper wire or the like along the axial direction on an outer peripheral surface of the shaft, and the shaft. A jumper wire or the like having a holder for rotatably accommodating a body and a notch groove formed at the tip of the holder to bend and lock the rear portion of the covered wire into which the tension is applied as a rotational reaction force to the covered wire. In the terminal winding tool, the cutter having a cutting edge that cuts into the coating by biting into the coating of the coated wire is rotatably pivotally supported in the rotary shaft body on the most distal side, and the holder is provided with the above-mentioned. A terminal winding tool for a covered wire, characterized in that an opening is formed so that the turning end side of the cutter can freely protrude from the holder.