JP3023545B2 - Hand held pressure welding tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a press-connecting tool for a connector for branch-connecting a VVF cable in which a plurality of conducting wires are arranged in parallel and an outer periphery thereof is further insulated.

[0002]

2. Description of the Related Art Conventionally, it is often necessary to connect such a VVF cable to another VVF cable to obtain a branch line. In this case, when energizing various devices, it may be necessary to distinguish between the positive side and the negative side of the current-carrying wire, and therefore, the color of the interior coating of the VVF cable is generally a different color that is easy to identify. For example, V
The color of the interior coating of the VF cable is two, white and black.
Many are colored. When a branch line is taken out from the main line, it is common practice to connect the white-covered conductive line of the main line to the white-covered conductive line of the branch line, and similarly connect the black-covered conductive lines to each other.

[0003] In the operation of taking out such a branch line, when the main line is a branch line, the power is turned off in order to eliminate the danger, and generally, as shown in FIG. first the VVF cable 3 of the main line side and cut at predetermined locations, each of removing the outer coating 31 positive electrode side of the covered wire 32a and the negative electrode side and the covered wire 32b is taken out, respectively, to further remove the respective interior the covering To expose the conducting wire . The exterior coating 31 also VVF cable 3 'likewise branch side, the positive side, after exposing the electric conductors by removing the negative electrode side interior to be covered preparative respectively, branch lines and the positive electrode side power line 33a of the main line Are inserted into the metal sleeve 6 provided inside the closed-end insulating cap 61, and the metal sleeve 6 is pressurized and deformed under pressure by a pressing tool. Then, similarly, the current-carrying wires of the respective negative electrodes were connected to each other.

[0004]

In such a means,
If the main line, which is the branch line, is a branch line, the power must be turned off before the branching work because of the necessity of electric shock prevention. Since it is very troublesome, there is a problem that the construction time is long and the working efficiency is poor.

Accordingly, the inventor of the present invention can safely and quickly perform the branching operation of the electric wire without stripping the inner and outer coatings of the VVF cable as described in detail later in this specification. Although the present invention has previously proposed a connector, the present invention confirms a press-contact mechanism for pushing a metal contact attached to the connector into the connector body, and which side of the positive electrode side of the VVF cable is the same. Therefore, it is an object of the present invention to provide a hand-held press-welding tool having a simple mechanism, which also has a skin cutting mechanism for cutting off a part of the skin so that the color of the endothelium can be confirmed.

[0006]

In order to achieve the above object, the present invention takes the following measures. That is, in the press-contact tool of the present invention, the press-contact tool includes a main body 42 having a jaw 41 for holding a connector to be press-contacted, and a movable press-contact body 44 that linearly reciprocates with respect to a fixed receiving surface 43 of the jaw. The movable pressure contact body 44 is configured to be driven by repeatedly swinging a swing lever 45 pivotally supported by the main body 42,
Further, a V
A holding portion 46 for holding the VF cable is provided, and a part of the insulating outer skin 31 of the VVF cable held by the holding portion is cut and removed by the moving pressure contact body 44 to remove the inner insulating sheath 3 inside.
The configuration is such that a cutting blade 47 for exposing 2 is provided.

[0007]

1 to 4 show an embodiment of a pressure welding tool according to the present invention. The pressure welding tool A has a jaw 41 for holding a connector B to be pressed. 42, and a movable pressure contact body 44 that linearly reciprocates with respect to the fixed receiving surface 43 of the jaw. The upper end pressing surface of the movable press body 44 and the fixed receiving surface 43 for receiving the same are formed of flat surfaces parallel to each other, and when the movable press body 44 is retracted at the maximum, a connector B to be pressed between them is fitted. It is formed with dimensions that allow for

The moving press body 44 is configured to be driven by repeatedly swinging a swing lever 45 pivotally supported by a shaft 48 on the main body 42. In this embodiment, the swing arm 5 pivotally connected in a substantially U-shape via the connecting pin 49 is provided.
One end of one of the arms 50, 51 is pivotally supported by a main body 42 via a shaft 52, and one end of the other arm 51 is pivotally connected to a rear portion of the moving press body 44 via a shaft 53. The swing arms 50 and 51 are urged by the spring 54 so that the connecting pin 49 is constantly pressed outward, that is, in a direction in which the swing arms 50 and 51 are bent in a V shape. A cam roller 55 provided coaxially with the pin 49 abuts on the inside of the root of the swing lever 45 and constantly pushes the swing lever 45 outward. Reference numeral 56 denotes a stopper that regulates the outward movement of the swing lever 45. By such a mechanism, the swing arm 45 is swung toward the fixed lever 57 as shown in FIG. 2 from the state of FIG. The moving pressure contact body 44 can be pushed up.

Further, in the pressing tool A, a VVF cable 3 is provided beside the moving path of the moving pressing member 44 by the jaw 41.
Is provided. The holding portion 46 is insulated to such an extent that the cutting blade 47 to be described later cuts and removes a part of the insulating outer skin 31 of the VVF cable 3 held by the holding portion and the color of the inner insulating inner skin 32 can be confirmed. The dimensions are set so that the outer skin portion of the cable is exposed on the moving path side of the moving pressure contact body 44 so that the inner skin 32 can be exposed. The moving press body 44 is provided with a cutting blade 47 for cutting and removing a part of the outer sheath of the cable exposed on the side of the movement path of the moving press body 44.

Therefore, as shown in FIG.
By operating the swinging lever 45 while holding the cable 3 to push up the moving pressure contact body 44 as shown in FIG. 4, the VVF cable 3 is moved as shown in FIGS.
Cut and remove the insulating sheath 31 to remove one of the insulation in the cable.
The skin 32 can be exposed. Thereby, it is possible to accurately confirm which side the positive-side conducting wire of the cable to be connected by the connector B described later is.

Note that the movable press body 4 is moved by the swing lever 45.
The mechanism for linearly reciprocating 4 is not limited to the above-described structure. For example, a cam or gear is provided on the swing shaft portion of the swing lever 45 , and the movement pressure contact member 4 is formed by the rotation of the cam or gear.
It is also possible for 4 to reciprocate.

FIGS. 6 to 13 show an example of a connector B corresponding to the pressure welding tool according to the present invention.
Indicates a contact. The contact 1 has a substantially inverted U-shape in side view formed by press-molding a brass plate having high electrical conductivity and a hardness higher than the hardness of the VVF cable 3, 3 'to be used, and each of the pieces 1a, 1a has: The two cutouts 11, 11 which cut the insulating outer skin 31 and the insulating inner skin 32 of the two VVF cables 3, 3 'and insert and contact one of the conducting wires 33 in the cable are formed at a predetermined interval D. In addition, a concave portion 12 for dividing the cut portions 11, 11 is provided in an intermediate portion. Also connect the cable to its large diameter side
The cutting blades 13, 13, which divide right and left from the middle of the width W , have two pieces 1 a, 1 near the respective cut portions 11, 11.
a is formed along the direction connecting a. Notch 1
The lower ends of the first and the first 11 are formed in a V-shape like a cutting blade. The cutting blade cuts the outer skin 31 and the inner skin 32 of the VVF cables 3 and 3 ′ and reaches the inner conducting wire 33. The energizing wire 33 is sandwiched while being deformed by pressing from both sides. When the notches 11 and 11 are pushed into the cable, the cut-out portions 11 and 11 are electrically connected to each other.
Are slightly inclined upward so as to separate them from each other. The contact 1 has an insulating resin plate 14 attached to the upper surface of the connection bottom portion .

The connector body 2 is integrally formed of a resin material such as nylon, polyethylene or polypropylene. The connector main body 2 is composed of two main body components 2a and 2b of substantially the same shape and a half body, and a cover body 26. Each of the main body components 2a and 2b is provided on the branch line side (branched side). 2 core VVF cable 3 and 2 core V for branching
Two grooves 2 for inserting and fitting with the VF cable 3 '
1 and 22 are formed in parallel at a predetermined interval E. One main body 2a has insertion holes 23 for the contact 1 and is foldably connected to the other body 2b at one side by a foldable portion 24. These main body components 2a and 2b are provided with engaging pieces 20b on the free end side.
And the engagement hole 20a. Further, the cover body 26 is extended outside on an extension line along the groove direction of the main body structure 2a through a flexible connecting band 25 and is foldably connected to a contact insertion surface of the main body structure 2a. ing. The cover 26
Are provided with engaging claws 27 which engage with engaging holes 27a provided in the side surface of the main body 2a. Further, the main body 2
The b is provided with a hook 35 for hooking the present connector.

The width of each of the grooves 21 and 22 is substantially the same as the width W of the both VVF cables 3 and 3 'on the side of the conducting wire parallel (wide side), so that the cables can be inserted without any gap. Grooves 21, 21, 2 in a folded position in which the two main body components 2 a, 2 b are fitted to each other.
Opposing width between 2, 22 (sum of the depth of both opposing grooves)
Is the width w on the narrow side of each of the VVF cables 3, 3 '.
, Respectively, and are formed to have a width that allows the cable to be sandwiched without any gap. The interval between these two grooves 21 and 22, that is, the interval E between the center lines is formed to be substantially equal to the interval between the two cut portions 11, 11, that is, the interval D between the center lines of the contact 1. is there. The insertion hole 23 for inserting the contact 1 is provided in FIG.
As shown in FIG. 3, the contact 1 is formed in a size suitable for inserting and temporarily holding the lower half thereof.

The connector in this embodiment has a
A connector for obtaining only one branch line from the VF cable 3, wherein the configuration is such that a shielding wall for closing the groove at one end of the grooves 22, 22 on the side through which the branch-side VVF cable 3 ′ is inserted. 28, 28, and the VV on the branch side
The cut end of the F cable 3 'is applied to the shielding wall 28 so that it can protrude only in one direction. After the connector is attached to the cable 3 on the branch line as described above, the cable 3 'on the branch side is
The tip is a shield wall 2 from the opening made to the side by
By pushing in until it touches 8, the two wires 3, 3 'can be inserted parallel to the connector.

In order to branch an electric wire using the connector constructed as described above, the two-core VVF cable 3 on the wired side (branch side / branched line side) is covered with the covering state as shown in FIG.
As shown in FIG. 2, one of the main body components 2a and 2b (here, 2b) is inserted into the groove 21 so that the cross section is in a horizontal posture, and the two cores for branching are inserted into the adjacent groove 22. The line on the positive or negative side of the VVF cable 3 ′, which has been confirmed by the cut end face, is selected in a direction that matches the positive or negative line on the main line side, and the cut end face is connected to the shielding plate 2.
8 is inserted in allusion, then as seen in FIG. 8, the other constructs (here 2a) presses covered thereon is folded from the folding unit 24, the engagement on the other side
The piece 20b and the engagement hole 20a are fitted to each other. In this structure fitting state, the cable 3 'on the branch line side may be inserted from the opening.

Next, as shown in FIG.
The upper end surface of the contact is pressed by the press-contact tool A of the present invention described above, and the contact 1 is inserted into the contact insertion hole 23 as shown in FIG.
Of the contact 1 is finally bent so as to cover the outer side surface of the contact 1 as shown in FIG. 27 is engaged and connected to an engaging hole 27a formed in the main body component 2a.

The pressurized contact 1 cuts the outer skin 31 and inner skin 32 of the cables 3 and 3 'inside the connector body 2 as shown in FIGS. At the same time that the cable is electrically contacted by the cutting blade 13, the cable W
Is divided right and left from the middle of At this time, since the cuts 11 are formed so as to be inclined in the direction of separating the left and right conducting wires 33 of the cables 3, 3 ′ into right and left, the cuts 11, 11 having different poles in the same cable are formed. Electric wire 33,
33 can be separated from each other to improve safety.
In this way, the branch line is branched from the existing wiring or the main line. Further, the connector together with the cables 3 and 3 ′ can be hung on a building or a building by the hook 35 provided on one of the covers 26, which is convenient.

Although the embodiment which is considered to be representative of the present invention has been described above, the present invention is not necessarily limited to the structure of this embodiment. The above-mentioned purpose can be achieved, and the present invention can be carried out with appropriate modification within a range having the following effects.

[0020]

As is apparent from the above description, the present invention provides a mechanism for press-fitting a connector contact into a connector main body, and a degree for confirming a color of an inner skin for confirming a line on the positive electrode side of a VVF cable. A cutting mechanism for cutting off a part of the outer skin, so that a single tool can be used to cut and remove the outer skin of the VVF cable and press-fit the contacts into the connector body without changing the tool. Accordingly, there is a remarkable effect that the branch connection work of the VVF cable can be facilitated, and the type of auxiliary tools for the operator can be reduced to reduce fatigue.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a pressure welding tool according to the present invention.

FIG. 2 is a side view showing a state in which a movable pressure contact body is pushed up by operating a swing lever in the pressure contact tool.

FIG. 3 is a perspective view showing an operation of cutting a part of a VVF cable in the pressing tool.

FIG. 4 is a cross-sectional view showing a state in which a part of a VVF cable is cut in the pressing tool.

FIG. 5 is a perspective view showing a state in which a part of the VVF cable is cut and removed.

FIG. 6 is an overall perspective view showing an example of a connector corresponding to the pressure welding tool of the present invention, on the rear side of the main body before a contact is inserted.

FIG. 7 is a perspective view of a state in which the cable is inserted into the groove in FIG. 6;

FIG. 8 is a perspective view of a state in which the left and right main body components are folded and a cable is fitted.

FIG. 9 is a perspective view showing a process of press-fitting a contact with the press-contact tool of the present invention.

FIG. 10 is a perspective view showing a state where the contact is pressed into the connector main body.

FIG. 11 is a perspective view showing a state in which a cable is completed with the cover body covered.

FIG. 12 is an enlarged sectional view when a contact is inserted.

FIG. 13 is an explanatory perspective view showing the internal structure in FIG. 11;

FIG. 14 is a perspective view showing a conventional branch connection means of a VVF cable.

[Explanation of symbols]

 Reference Signs List 3 VVF cable 31 VVF cable insulating sheath 32 VVF cable insulating inner sheath 33 VVF cable conducting wire 41 Jaw 42 Main body 43 Fixed receiving surface 44 Moving pressure welder 45 Swing lever 46 Holder 47 Cutting blade A Pressing tool B Connector

Continuation of the front page (56) References JP-A-10-27638 (JP, A) JP-A-10-106643 (JP, A) JP-A-10-125365 (JP, A) Real opening 60-66460 (JP) , U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 4/24 H01R 31/02 H01R 43/01 H01R 43/042 H02G 1/12 301

Claims (1)

(57) [Claims] A jaw (4) for holding a connector to be pressed.
1) and a moving press body (44) that reciprocates linearly with respect to the fixed receiving surface (43) of the jaw (41) , and the movable press body (44) is a main body ( The swing lever (45) pivotally supported by (42) is configured to be driven by repeatedly swinging, and further, a VVF cable is provided by the jaw (41) on the side of the movement path of the moving pressure contact body (44). A holding portion (46 ) for holding (3) is provided, and a part of the insulating sheath (31) of the VVF cable (3) held by the moving press body (44) in the holding portion (46) is cut and removed. A hand-held press-fitting tool provided with a cutting blade (47) for exposing the inner insulating inner skin (32).