JPS64792B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a pressure welding tool for connectors, and in particular, a pressure welding tool for connecting multiple electric wires to each contact of a multipolar connector in one operation. This invention relates to a pressure welding tool for connectors.

[Conventional technology]

Conventionally, with this type of pressure welding tool, one electric wire was placed facing the top of each clip terminal for pressure welding, and the electric wire was connected by pressure welding with the pressure welding tool.

In addition, as another pressure welding tool, one that connects wires in one operation has been proposed, but this pressure welding tool has a structure that includes a wire connection portion body and a wiring cassette portion that can be separated from the wire connection portion body. The main body of the wiring section includes a housing holder for holding a connector for multiple electric wires to be connected, a wire cutter die arranged on both sides of the housing holder, a lever that can be opened and closed, and the wire cutter die attached to the lever. and an insert punch having cooperating pressure connection teeth.

[Problem to be solved by the invention]

For pressure welding using the former of the conventional pressure welding tools mentioned above, it is necessary to wire a wire to a clip terminal for each wire and then make a pressure weld connection for each wire, which is very time consuming and costly. It was becoming. Furthermore, in the latter case, the mechanism is complicated and requires high precision.
Moreover, it is heavy and difficult to move.
Naturally, I couldn't carry it with me. Furthermore, the construction and wiring itself of the wire cassette in which the wires are arranged in advance is complicated, requiring a great deal of labor. Also,
As a connection device for communication cables, Utility Model No. 49-6296
No. (name of the invention, press pliers for electrical connections) and Japanese Utility Model No. 16876 (name of the invention, compression pliers) are known. However, this known device consists of a terminal connector that cuts off unnecessary terminal wires in a single operation from a multicore wire corresponding to each contact of the multipole connector, and an intermediate connector that has wires on both sides of the connector. It is not intended to connect both of them with a pressure wire.

The present invention was devised to solve these problems with conventional pressure welding tools, and is small, light, and convenient to carry. It also facilitates pre-wiring, and can be connected all at once to the pressure welding contacts of multi-pole connectors. The present invention provides a pressure welding tool that provides excellent pressure welding.

[Means to solve the problem]

As a concrete means to solve the above problems,
Insulating protector 12 holding multi-core electric wire 140
0, and an insulating connector main body 110 having an array opening 111 of a conductive female pressure welding connector 130 that contacts the electric wire of the protector under pressure of a pressure welding tool.
A pressure welding tool for a pressure welding connector 100 consisting of a pair of grips 1 and 2 that can be opened freely and connected by a pressure regulating device, and a sliding surface 41 extending from one of the grips 1 and 2. and a head table 4 having a connector pedestal 43 hanging from its tip, and the connector pedestal 43 supported by the other grip.
A sliding head 5 is provided which is movable on the sliding surface toward the pressure welding connector 100 disposed in the connector, and a sliding base 52 is provided on the sliding head 5 to form a recessed portion having a substantially U-shaped cross section. , a cutter rest 53 is fitted into the recess of the sliding base 52 and fixed to the sliding base 52 using a stopper bar 59, and is provided with a cutter 56 and a wire pushing plate 54; is an insertion hole 52 for the stop rod 59, which allows the tool rest 53 to be fixed in a predetermined position and the cutter to cut off unnecessary terminal wires to form a terminal connector.
b', and an insertion hole 52b for a stop rod 59, which fixes the tool rest 53 in a predetermined position and allows the cutter to be used as an intermediate connector without cutting the wire even if the sliding base 52 slides. A pressure welding tool for a connector, characterized in that it has a cutting means.

[Effect]

Next, the operation of the present invention will be explained.

The connector 110 is combined with the protector 120 which holds the electric wires 140 facing each electric wire insertion space.

The combined protector and connector are set at the connector fixing position within the pressure welding tool.

Next, by firmly grasping grips 1 and 2,
The sliding table 52 slides and presses the combined protector and connector against the connector holder 4 with strong pressure.
Press it to 3.

At this time, when the stopper rod 59 is inserted into the stopper rod insertion hole 52b' of the slide table 52, each electric wire 140 is cut by the gripping force of the grips 1 and 2, and the structure can be used as a connector. becomes. On the other hand, when the stop rod 59 is inserted into the stop rod insertion hole 52b of the sliding base 52, the electric wire 14
0 is the connector body 110 without being cut.
The insulation displacement contact 130 is pressed against the electric wire 140,
The structure allows it to be used as an intermediate connector.

〔Example〕

Next, embodiments of the present invention will be described in detail based on the accompanying drawings.

FIG. 1 is an exploded perspective view of a pressure welding connector that is connected by pressure welding using the pressure welding tool of the present invention. FIG. 2 is an exploded perspective view of the pressure welding tool of the present invention. Figure 3 shows
FIGS. 4 to 6 are perspective views of the insulation displacement connector after the insulation displacement connection has been completed, and are drawings showing the procedure for insulation displacement connection using the insulation displacement tool of the insulation displacement connector.

In FIG. 1, the pressure contact connector 100 mainly includes a connector body 110 and a protector 120. The connector main body 110 may be integrally molded from an insulating material such as plastic, and has a conductive female in the center in the thickness direction, which is made by cutting the insulation coating of the electric wire 140 at the end and making contact with the core wire. A contact arrangement opening 111 for arranging the pressure welding contacts 130 is formed. Connector body 110
Locking legs 121 of the protector 120 are provided on both sides of the protector 120.
Guide groove 11 for receiving, guiding and locking
2 is formed, and furthermore, a reverse insertion prevention convex portion 11 is formed to ensure proper mating when mating a mating connector.
3 is provided.

The protector 120 is also integrally formed of an insulating material such as plastic, and has connector bodies 110 on both sides.
A locking leg 121 is provided for locking the protector 120 against the cover. protector 1
A plurality of positioning and holding members 12 for positioning and holding the electric wires 140 to be connected are provided on both sides of the wire 20.
2 is formed. The positioning holding member 122
One end is shaped like an umbrella to prevent the wire from coming off. Furthermore, an electric wire insertion space 123 is formed between the positioning and holding members 122. Next, in FIG. 2, reference numerals 1 and 2 denote a pair of grips, which are both connected by a pressure regulating device 3, which will be described later, and are pivotally supported by a pin 2a, so that they can be freely opened from each other. One grip 2 is fixedly supported behind the head table 4 by pins 2b, and the other grip 1 has a sliding head 5 that slides along the longitudinal direction of the upper surface of the head table 4, and It is supported by a pin 2c via a link not visible in the figure, and the sliding head 5 is configured to move horizontally back and forth when the grips 1 and 2 are opened and closed. Note that the through hole 2d into which the pin 2c is inserted is elongated, so that the pin 2c can be positioned appropriately.

The structure of the sliding head 5 includes a support portion 51 connected to the grips 1 and 2 by the pin 2c, and a support portion 51 connected to the grips 1 and 2 by the pin 2c.
a U-shaped cross-sectional sliding table 52 integral with the sliding table 52;
The main members are the tool rest 53 etc. which are set so as to be fitted into the tool rest 53, and each of these members has a flat electric wire pusher plate 54 biased by the elastic force of a spring member 55. It is installed protrudingly. 54a in the figure is a long groove for supporting the wire press plate 54. In addition, numeral 56 in the figure is a cutter for cutting electric wires, which is fixed to the tool rest 53 in parallel with the electric wire pusher plate 54.
56a is its cutting edge. A set of these turrets 5
3 is fitted and attached to the recessed portion of the U-shaped sliding base 52 by means of a fixing plate 57 and fixing screws 58, 58. 52a is a screw hole, 53b is an elliptical through hole, and 52b and 53c are holes for positioning the tool rest 53 using pins 59. However, hole 52b' is hole 5
It is separately provided diagonally slightly forward of 2b, and is used to set the tool rest 53 in two positions: a normal position and a slightly forward position. By setting this tool rest 53 in the fixed position of the hole 52b of the sliding table 52, the cutter grasps the grips 1 and 2 and moves the tool rest 53 to the sliding table 52.
Even if the electric wire 140 is slid, it does not reach the electric wire 140 and is not cut. However, setting the tool rest 53 slightly forward from the normal position of the sliding base 52, that is, the hole 52
By switching to the position b', the wire pushing plate 5
4 and the cutter 56 to reliably cut the electric wire 140. On the other hand, 52c protruding forward of the sliding table 52 is a sliding guide, and 52d is a pressure contact plate that is attached to the sliding guide 52c and presses against the pair of connectors 100 while pressing.

Next, returning to the explanation of the head table 4,
A connector holder 43 is installed at the tip of the head table 4.
is formed vertically, and a shock absorbing material 44 made of a synthetic resin material such as urethane is provided on the inner surface thereof. By providing this shock absorbing material 44,
Immediately after the cutter blade edge 56a of the tool rest 53 cuts the electric wire 140, its residual force abuts against the inner surface of the connector holder 43 of the head table 4, thereby preventing the blade from spilling or being worn out. Also, an escape groove 45 is provided at the intersection between the sliding surface 41 of the head table 4 and the connector pedestal 43, and the lower part of the cutting edge 56a abuts against the intersection to prevent the blade from spilling. has been done. Furthermore, the impact buffer material 44
Holding plates 46 and 47 are fixed to both sides of the connector holder 43 for holding the connector 100 from the outside and positioning the connector 100.
A fixing groove 48 is formed in the middle part of.

Next, regarding the pressure regulating device 3, when compressing the pair of grips 1 and 2 in the closing direction, each of the electric wires 140 is clamped to the pair of connector main bodies 110 and the protector 120 and assembled, and then the broken line shown in FIG. Set it in the connector fixing groove 48 shown by the arrow. After that, (i) a first stage operation in which the pressure contact plate 52d of the sliding table 52 presses the connector main body 110 containing the pressure contact 130 and the protector 120 to press the electric wire 140 thereto;

(ii) After the first step, the tip of each wire 140 that has been press-connected is cut off by the cutter 56 as necessary, and the second step operation is to trim the wires 140 to the side ends of the connector 100 (see FIG. 3). A latching action of the pressure regulating device 3 is employed to distinguish between the first and second stages of operation. In addition, the crimping force between the connector main body 110 and the protector 120 is kept constant during the work, and the grips 1 and 2 are made to warn the operator that the grips 1 and 2 will open and not return to their normal positions if the pressure is applied halfway. The purpose is to prevent the occurrence of pressure-welded defective products.

Next, a procedure for connecting electric wires to a pressure welding connector using the pressure welding tool of the present invention will be described.

(i) First, the electric wire 140 is held in the protector 120 with the electric wire facing the electric wire insertion space 123 of each protector 120 of the connector 100 (first
Figure) (ii) Next, the protector 12 holding the electric wire 140
0 and the connector main body 110 is assembled. (Fig. 2B) (iii) With the connector main body 110 and protector 120 assembled, insert the connector fixing groove 48 of the pressure welding tool.
Set to .

(iv) Next, by firmly grasping grips 1 and 2,
The grips 1, 2 are closed against the latching action of the pressure regulating device 3, and the sliding heads 5 or bearings 51 and sliding bases 52 connected to the grips 1, 2 are slid forward. The pressure contact plate 52d formed on the sliding base 52 presses the combined connector body 110 and protector 120 against the connector pedestal 43 with strong pressure, and this pressure causes the electric wire 140 to be brought into pressure contact. It will be pressed against the child 130. At this time, the tool rest 53, which is fitted and set in the recess of the sliding base 52, is also moved forward. At this stage, the pressure contact 1 is
30 is to press the electric wire 140. (Fig. 5) (v) By further firmly grasping the grips 1 and 2, the electric wire pusher plate 54 provided on the tool rest 53
The electric wire 140 is pressed against the spring member 55, and the cutter 56 moves forward to cut the end of the electric wire 140. The connector 100 is then pressed into contact as shown in FIG. In this case, the sliding table 5
It is necessary to insert the pin 59 into the positioning hole 52b' of No. 2 and set the tool rest 53 in a position where it protrudes forward.

(vi) At the moment when grips 1 and 2 are firmly grasped in step (v) above, the latching action of the pressure regulating device 3 is completely released, and grips 1 and 2 are no longer gripped.
Even if you grip grips 2 tightly, the grips will not close. Then, if you gradually weaken your grip on grips 1 and 2, grips 1 and 2 will close.
A spring (not shown) provided inside the grip 1 moves the grip 1 in the opening direction, and at the same time the sliding head 5 retreats back to its original normal position.

(vii) In this way, by repeating the operations (i) to (vi), the insulation displacement connection of the connector 100 is performed, and in the connector 100 that has been insulation displacement connected, the electric wire 140 is an unnecessary electric wire protruding from one side of the connector. All the terminals are cut by cutter 56.

(viii) As explained earlier, the cutter 5 is fixed by inserting the pin 59 into the positioning hole 52b of the tool rest 53 attached to the U-shaped sliding base 52.
6, even if the grips 1 and 2 are grasped to complete the pressure welding, it will not reach the position where the wires 140 are cut, and therefore an intermediate connector with the wires 140 on both sides of the connector 100 will be connected. .

Next, FIGS. 7 and 8 show the head table 4.
FIG. 4 is a schematic diagram illustrating a method of suppressing left and right wobbling of a sliding table 52 installed in the same place as much as possible. That is, in FIG. 7, a sliding groove 52e is provided in the substantially central part of the bottom surface of the sliding table 52 in the sliding direction, which is the longitudinal direction of the head table 4, and the sliding groove 52e of the head table 4 is provided in the sliding direction, which is the longitudinal direction of the head table 4. A ball hole 42 is provided at approximately the center of the sliding surface of the surface 41 with the sliding table 52, and by loosely fitting the steel ball B into the ball hole 42, it is inserted into the sliding groove 52e of the sliding table 52. Said steel ball B
By inserting and sliding the slide table 52, it is possible to stop the slide table 52 from moving from side to side. FIG. 8 shows another method, in which the sliding groove 52e of the sliding table 52 has the same structure as that in FIG. 7, but the sliding surface 41 of the head table 4
There is an inverted V-shaped protrusion 42 in the sliding direction approximately at the center of the
a is provided, and the sliding groove 52e and the inverted V-shaped protrusion 42
By inserting the slider 5 in the same manner as in FIG.
It is possible to prevent left and right blurring of 2.

FIG. 9 shows another embodiment of the cutter 56 attached to the tool post 53. FIG. 9a shows that by providing a cutting portion without a cutting edge above the cutting edge 56a of the cutter 56 and setting it on the tool rest 53,
The pressure-welded connector is a connector 100A shown in FIG.
On the right side of the connector, half of the connectors are cut, and half of the connectors are not cut, so that they can be connected to the other connector 200A with a smaller number of pins.

FIG. 9b shows connectors 100B and 200 connected as shown in FIG. 10b by providing a cut portion 56b in the center of the cutting edge 56a of the cutter 56.
B is molded.

〔Effect of the invention〕

According to the pressure welding tool of the present invention constructed as described above, (1) the structure is simple and simple, so the cost is low, maintenance and inspection are easy, and the tool itself is compact; It is possible to perform pressure welding even inside a set where pressure welding is difficult to connect, and it is also convenient to carry and carry.

(2) There is no need to temporarily install wiring in a wiring cassette, which reduces costs and facilitates reduction of wiring connections.

(3) There are two ways to connect the wires to the connector: one is to cut the wires and create a terminal connector by changing the mounting position on the sliding head of the tool post;
A single pressure welding tool can perform both connection by pressure welding a connector to form an intermediate connector without cutting the wires, and also enables smooth and uniform pressure welding of the connectors, as well as uniform cutting of the wires.

(4) Since it is easy to attach and detach the cutter to the tool post and to attach and detach the tool post from the sliding base, by preparing various cutters, it is possible to arbitrarily cut the electric wires that are press-connected to various connectors. Moreover, these cutters are designed to be installed inside the tool, and the cutters do not come out unless the grip is closed, so the work can be done safely.

Generally speaking, all wires to be connected are single wires, but with the pressure welding tool of the present invention, not only single wires but also regular cables such as cabtire cables, ribbon cables, sagging cables, and twisted cables can be connected. Even commonly used cables can be connected by pressure welding.

[Brief explanation of drawings]

The drawings show embodiments of the present invention, and FIG. 1 is an exploded perspective view of a pressure welding connector that is connected by pressure welding using the pressure welding tool of the present invention, and FIG. 2A, FIG. 2B, and FIG. 2C are the embodiments of the present invention. FIG. 3 is an exploded perspective view of the pressure welding tool, FIG. 3 is a perspective view of the pressure welding connector after the pressure welding connection has been completed, FIGS. Fig. 8 is a schematic cross-sectional view of a method for suppressing vibration of the sliding table installed on the head table, Fig. 9 a and b are front views showing another embodiment of the cutter attached to the tool post, and Fig. 10 Figures a and b are front views showing the state of cutting by the cutter shown in Figures 9a and b. 1, 2... Grip, 3... Pressure regulating device, 4
... Head cable, 5 ... Sliding head, 43 ...
Connector cradle, 53...turret, 54...wire pusher plate, 56...cutter for cutting wires, 59...pin, 100...pressure connector.

Claims (1)

[Claims] 1. An insulating protector 120 holding a multi-core electric wire 140, and a conductive female pressure welding connector 130 that contacts the wire of the protector under the pressure of a pressure welding tool.
An insulating connector body 1 having an array of openings 111 of
A pressure welding tool for a pressure welding connector 100 consisting of a pair of grips 1 and 2 that can be opened freely and that are connected by a pressure regulating device, and a sliding surface extending from one of the grips 1 and 2. 41 and a head table 4 with a connector pedestal 43 hanging from its tip, and the press-contact connector 100 supported by the other grip and disposed on the connector pedestal 43 on the sliding surface. Sliding head 5 made possible
The sliding head 5 is provided with a sliding base 52 forming a recess having a substantially U-shaped cross section, and the sliding base 52 is fitted into the recess of the sliding base 52 and fixed to the sliding base 52 using a stopper bar 59. The tool rest 53 is provided with a cutter 56 and a wire holding plate 54, and the tool rest 53 is fixed in a predetermined position on the sliding stand 52, and the unnecessary terminal wire is cut and terminated with the cutter. The insertion hole 52b' of the stop bar 59, which can be used as a connector, and the cutter can fix the tool rest 53 in a predetermined position without cutting the wire even if the sliding base 52 slides. A pressure welding tool for a connector, characterized in that it is provided with an insertion hole 52b for a stopper rod 59 that can be used as a connector.