JPS6316856B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-core cable connection method and device.

Conventionally, the method of connecting the core wires of a multi-core cable to a connector is as follows:
The insulating layer on the outer sheath of the core wire is colored in various colors to identify each color, and the contact number line of the connector and the corresponding color display of the core wire are determined, and when the core wire is actually connected to the contact. In this case, the operator visually reads the contact number line displayed on the connector housing, etc., and identifies the core wire to be connected to it by identifying the color display, or the operator determines the color identification of the core wire first. The method is to read the number line of the contact displayed on the corresponding connector and connect the core wires to the contact one by one.

However, such conventional wiring methods have the following drawbacks.

(1) The operator must visually identify the color display of the core wires and read the contact number, so the more wires there are, the more time it takes to identify the color display and read the contact number. Workers' eyes get tired.

(2) When displaying fibers by color, the more fibers there are, the more colors are close to each other, and the more difficult it becomes to identify the colors. Similarly, it becomes difficult to read the contact number lines on the connector side, as the number line characters become smaller as the number of poles increases. As a result, erroneous connections occur frequently, further impairing work efficiency.

(3) The connection of the core wire to the contact by the operator is also
Since it is mainly done by hand, it is not suitable for mass production.

It is an object of the present invention to provide a wiring method and device that eliminates the drawbacks of the conventional wiring methods and that can always accurately and quickly connect cable core wires to corresponding contacts of a connector without relying on visual inspection by an operator. The goal is to provide the following.

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

FIGS. 1 and 2 are schematic diagrams for explaining the connection principle of the present invention for connecting both ends of the core wires of a multi-core cable to corresponding contacts of each terminal connector. To explain the connection principle of the present invention with reference to these figures, first, as shown in FIG. let One of the exposed core wire terminals 2A is randomly connected to each contact 4A of the connector 3A. Next, the second
As shown in the figure, one end of a detector 6, which will be described later, is connected via a coupling connector 5 to a connector 3A to which the core wire terminals 2A are connected. The other end of the detector 6 is connected to a touch sensor 7. Then, using the touch sensor 7 of the detector 6, touch the other end 2B of the cable core. In this state, the connected contact 4A of the cable core terminal 2A
is scanned by the scanner of the detector 6 via the coupling connector 5, the core wire that is touched by the touch sensor 7 on the terminal 2B has a different capacitance or impedance from other core wires that are not touched. Therefore, it is possible to know the number wire of the contact to which the terminal 2A of the core wire being touched is connected, and this number wire is displayed on an indicator such as an LED of the detector 6. Finally, the operator can manually or automatically connect the fiber terminal 2B touched by the touch sensor 7 to the contact 4B of the connector 3B corresponding to the displayed wire number.
If such work is performed for all the cable core terminals 2B, the other terminal 2 of the cable core with the terminal 2A connected to each contact 4A of the connector 3A
Connect B to contact 4 of the corresponding wire of connector 3B.
It is possible to connect to B without fail.

FIG. 3 is a schematic perspective view showing an embodiment of a pressure connection device for a connector that can perform pressure connection according to the connection principle of the present invention, and FIG.
B and C are a front view, a plan view, and a side view of the pressure connection device.

This connector pressure connection device 100 includes an operation console 110, a control box 120, a pressure drive device 130, a connector fixing and moving device 140, a pulse motor 150, a detector 160, a cable tester 170, a detector connection box 180, an operation box 190, and Cable holding arm 200A, 200
It is mainly composed of B.

The operation table 110 is provided with a plurality of legs 111 and casters 112 on the lower surface thereof, and the legs 111 are screwed so that the height and horizontal plane of the operation table 110 can be adjusted. Further, by making the length of the legs 111 extremely short or by removing the legs 111, the operation console 110 can be freely moved by the casters 112. On the right side of the console 110, there is a control box 1.
20 is provided, and a recess 114 is provided in the center of the console 110 to facilitate the operator's work. Further, an installation plate 115 on which various devices are installed is provided on the top surface of the operation console 110, and an inverted U-shaped groove 11 is provided at the front center of this installation plate 115 to facilitate pressure connection.
5' is formed.

The control box 120 includes a power source and a power switch 121.

5 and 6 are an enlarged partially cutaway front view and an enlarged plan view of the main parts of the pressure welding part, and FIG. 7 is a further enlarged perspective view showing in detail the relationship between the connector and the pressure welding rod in the pressure welding part. and Fig. 8 A, B
and C are diagrams schematically showing the order in which the cable core ends are press-connected to the connector.

With particular reference to FIGS. 5 to 8, the pressure contact driving device 130 and the connector fixing and moving device 140
The structure and operation example will be described in detail below. The pressure contact drive device 130 mainly includes a drive motor 131, a drive box 132, a pressure contact rod cover 133, a pressure contact rod 134, and a guide bar 135.
Gear 136', 1 for transmitting power from 1
36'' and a cam 137.The connector fixing and moving device 140 is provided with a holder 141 for fixing the connector 10, a cable clip 142 for holding the cable, and further includes a holder 141 for fixing the connector 10 and a cable clip 142 for holding the cable.
41 is provided on the moving table 143.

The holder 141 holds the connector 10 in a portion having the pressure contact 11 with a pressure contact rod 1 to be described later.
It is held in a state where it protrudes toward the front side surface 41 of 34. A group of cables 1 is held above the holder 141 by a cable clip 142.

A pressure contact rod 134 is located behind the connection surface 12 having the pressure contact 11 of the connector 10 held in the holder 141. Pressure welding rod 1
34 has a front end surface 41 facing the connection surface 12 of the connector 10, and the rear part of the press-connecting rod 134 and the pressing piece 134' are moved until the front end surface 41 contacts or is about to contact the connection surface 12. It is housed in a pressure contact rod cover 133 so that it can move forward and backward. Front end surface 41 of pressure welding rod 134
A groove 42 is provided in which the pressure contact 11 escapes when it comes into contact with or comes close to the connection surface 12 of the connector. Further, the press rod 134 has a pressing piece 134' at the rear thereof, which is integrally fixed to the press rod 134 by a bolt 44. The pressing piece 134' has a cam follower 45, and transmits the driving force from the driving part to the pressing rod 1.
34 to move forward. In addition, for the purpose of reversing, a tension spring 4 is installed between the bolt 46 attached to the pressing piece 134' and the bolt 71 attached to the fixed part.
7 is stretched, and the pressing piece 134' is always pulled rearward.

Furthermore, the pressure welding rod 134 is provided with a cable holding groove 48 on its front end surface 41 so as to be compatible with the cable 1 so as to guide the cable 1 so that it does not deviate from the normal pressure welding direction (see FIG. 7). .

The guide bar 135 has a sliding surface 51 that slides on the sliding surface 49 of the pressure rod 134, has a front portion 52' in front of the sliding surface 51, and has a bolt 54 at the rear thereof.
The engagement piece 135' is integrally connected to the engagement piece 135'. The rear half of the guide bar 135 and the engagement piece 135' that connects it are connected to the press rod cover 1 in the same way as the press rod 134 and the press piece 134'.
33 so that it can move forward and backward. The engaging piece 135' has a locking surface 53 at its rear end, and is connected to the step of the pressing piece 134' at a distance _S1 ' that is the same as or longer than a certain distance _S1 for cable cutting and complete pressure contact, which will be described later. He is facing Section 43. A compression spring 55 is also provided between the engagement piece 135' and the pressing piece 134'.
are placed and pressed against each other back and forth.

The guide bar 135 moves forward via the cam follower 45 by a cam mechanism to be described later, and further moves forward in cooperation with the pressure contact rod 134 by the pressure of the compression spring 55. Then, the forward movement of the guide bar 135 is stopped due to the contact between the distal end surface 52'' of the guide bar 135 and the holder 141.However, the pressing rod 134
Since there is a gap distance S ₁ ' between the locking surface 53 of the pressing piece 5' and the stepped portion 43 of the pressing piece 134', the pressing piece 134' moves further against the compression spring 55. Finally, when the cam 137 rotates to the maximum length point, the cam follower 45 is advanced the longest, the gap distance S ₁ ' becomes the minimum distance, and the front end surface 41 of the pressure welding rod 134 also cuts the cable 1 and cuts the cable 1. The cable is moved forward to the maximum so as to connect the cable to the insulation displacement contact 11.

The sliding surface 51 of the guide bar 135 slides and cooperates with the sliding surface 49 on the lower surface of the pressure contact rod 134,
Further, the front end surface 41 of the pressure welding rod 134 is connected to the cable 1 held in the guide groove 52 of the guide bar 135.
A blade surface 41' is formed to cut the material by shearing force.
Furthermore, the guide groove 5 of the guide bar 135
2 also has a blade surface 52' formed in the same manner.

In order to fully insert and hold the cable 1 into the guide groove 52, a push lever 56 is provided at the upper part of the guide groove 52, and a push lever 56' is provided at the middle part of the guide groove 52 on the opening side of the guide groove 52. Levers 56 and 56'
cam 59, cam follower 58 and lever 5
7, and is designed to operate so as to sufficiently push the cable 1 into the guide groove 52 before the front end face 41 of the pressure welding rod 134 advances into the guide groove 52. .

The pressure rod 134 is connected to a drive unit that moves the pressure rod 134 forward and backward. This forward and backward movement is caused by the front end surface 4 of the pressure welding rod
1 advances from a position behind the guide groove 52 of the guide bar 135 as a starting point, and then passes through the guide groove 52 to cut the cable 1 and further to the front end surface 41.
moves forward until the cut cable 1 is press-fitted into the pressure-contact 11 of the connector 10 and connected by pressure-contact, and then retreated in the opposite direction by the tension spring 47 to return to the starting position. This movement is repeated for each insulation displacement contact 11 of the connector 10.

The drive unit includes a drive motor 131 as a rotational drive source.
is provided, and its rotation is controlled by gears 136' and 136'.
A cam 137 is fixed to the shaft 65, so that the rotation of the motor 131 is transmitted thereto.

The motor 131 also rotates a cam 59 that operates push levers 56 and 56' provided on the opening side of the guide groove 52.

Also, the pressure contact rod 134 is connected to the connector 10.
As best shown in FIG. cable retaining groove 48 and guide bar 1
The guide groove 52 provided in the guide groove 35 can be selectively moved to a relative position. Although the method for moving it is not shown, it can be carried out manually or by power.

The procedure for press-connecting the connector to the press-connecting section having such a configuration will be explained below.

(1) First, place the pressure welding connector 10 in the holder 141.
Fixed to.

(2) Next, take out one cable 1 to be pressure-welded from the cable clip 142 and attach it to the guide bar 1.
35 into the guide groove 52. At this time, the pressure contact rod 134 is manually or automatically moved to a position corresponding to the cable holding groove 48 provided in the front end surface 41 with respect to the pressure contact 11 and is fixed therein.

(3) Then, the motor 131 is rotated by an automatic switch (not shown) using a sensor such as a light sensor or a manual switch, and the cam 59 is rotated to rotate the lever 57 and the push lever 5.
6, 56' to hold the cable 1.
Furthermore, the driving force of the motor 131 is
36', 136'' to the cam 137 and the cam follower 45 engaged therewith.
is gradually pushed forward against the tension spring 47.

(4) Then, the pressing piece 134' and pressure contact rod 134, which are integrated with the cam follower 45 that is pushed forward, are also moved forward, and together with the engaging piece 135' and the guide that are pushed forward by the compression spring 55. The bar 135 also moves forward in cooperation.

(5) The tip end face 52″ of the guide bar 135 is at a certain distance
When it advances to _S2 , it comes into contact with the holder 141 and the advance is stopped (see FIG. 8B). However, in this case, the pressing pieces 134' that were moving forward in cooperation with each other
and the pressure welding rod 134 is connected to the cam follower 45.
As a result of the forward movement of , it moves further forward against the compression spring 55 .

(6) Then, the front end surface 41 of the pressure welding rod 134 becomes
By coming into contact with the cable 1 held in the guide groove 52, holding the cable 1 by the cable holding groove 48, and moving further forward, the front end surface 41 of the pressure welding rod 134 and the guide bar 1
The blade surfaces 41', 5 provided in the guide groove 52 of 35
2' cuts the cable 1 by shearing force.
The excess length at the bottom of the cut cable is removed by gravity.

(7) After cutting the cable, the front end face 41 of the pressure welding rod 134 moves forward to a certain distance _S1 from the starting point, and the connector 10 is held while the cut cable 1 is held in the cable holding groove 48. It is guided and press-fitted into the pressure contact 11, resulting in a complete pressure connection. In this case, the cam 137 has rotated to the maximum long point, the cam follower 45, the pressing piece 134', and the pressure contact rod 134 that engage with it have been advanced to the maximum, and the gap distance between the step portion 43 and the locking surface 53 is
This means that S ₁ ′ is the minimum.

(8) When the complete insulation displacement connection is completed, the cam 137 rotates further and returns to the minimum length point, so the cam follower 4
5. The pressing piece 134' and the pressing rod 134 are pulled back to the starting position by the tensile force of the tension spring 47. Then, the engaging piece 135' and the guide bar 135, which cooperate with the pressure welding rod 134, are similarly pulled back and retreated to the starting position. In this way, everything returns to the starting point and is ready for the next pressure welding. Upon completion of one press-connection operation, the connector fixing moving device 140
After the connector 10 is moved by an appropriate number of contact arrangement pitches by the operation, the above-described pressure welding operation is repeated to perform pressure connection for all the contacts of the multi-pole connector.

Returning again to FIGS. 3 and 4, the pulse motor 150 can transmit rotational driving force to the movable chuck 153 via the belt 151 and the rotating shaft 152. With the moving chuck 153 inserted and chucked into the chuck receiver 145 of the moving base 143,
When the pulse motor 150 is activated, the moving table 14
3. Therefore, the holder 141 is the spindle 144
It will be fed in pitch along the

The detector connection box 180 includes the detector 160.
A connector 181 connected to is provided.

The operation box 190 is provided with various switches and dials for operating the overall operation of the pressure welding connection device, and an example of their arrangement is illustrated in FIG.

Furthermore, FIG. 10 is a flowchart showing the overall operation of the pressure welding connection device.

Next, the operation for connecting connectors to both ends of a cable using this insulation displacement connection device will be explained step by step.

(1) Peel off the outer sheath from both ends of cable 1, and remove core wire 2.
Take apart.

(2) The cable 1 whose jacket has been peeled off is held by the cable holding arm 200B, and one end to be connected by pressure connection is fixed with the cable clip 142.

(3) Turn on the power using the power switch 121 provided in the control box 120 of the device.

(4) Switch 1 provided in the operation box 190
91 to set the contact pitch, that is, 1.27 mm or 1.59 mm. Furthermore,
Press the single feed switch 192 to set the pressure welding connection of the connector to be fed in single pitches (simply and sequentially feed the same pitch as the contact pitch).

(5) When the connector 10 to be pressed is inserted into the holder 141 and the start button 193 of the operation box 190 is pressed, the connector 10 is firmly fixed to the holder 141. Further, the movable table 143 to which the holder 141 is fixed is moved along the spindle 144 by an air cylinder (not shown) and fixed therein so that the first press-contact can be performed. In this case, as described above, the movable chuck 15 is mounted on the chuck receiver 145 of the movable base 143.
3 is inserted and chucked, and the moving table 143 is enabled to move in pitches by the pulse motor 150.

(6) Grasp any core wire 2 of the cable 1 and insert it into the core wire guide groove 52 of the guide bar 135. Then, the drive motor 131 is rotated by the foot switch or photo switch, and as described above, the gears 136', 136'' and the cam 137 are operated, and the pressure welding rod 134 is moved to the left and guided into the core wire guide groove 52. The excess length of core wire 2 is cut off, leaving only the length necessary for pressure welding.
Further, by moving the pressure welding rod 134, the core wire 2 is connected to the contact 11 of the connector 10 by pressure contact. When the connection is completed, the pressure welding rod 134 is moved to its original position. This operation is performed by one rotation of the cam 137, and when the one rotation of the cam 137 is completed, the pulse motor 150 is automatically switched on and the movable table 143 moves by one pitch, and then Prepare for core wire pressure welding.

(7) Next, as in the previous item (6), grab the core wire 2 and push it into the core wire guide groove 52 of the guide bar 135. When the foot switch or photo switch is turned on, the wire is welded and connected by the crimp rod 134. Ru. In this way, all the contacts are connected by pressure welding one after another.

(8) Completed connector 1 with all contacts pressure-welded
0 is connector 1 of the detector connection box 180
81. The cable holding arm 200 connects the cable 1 so that the unconnected end of the cable 1 can be welded.
Hold at B.

(9) Line selection switch 19 of operation box 190
Press 4 to select the number line and set the pulse motor 150 to operate according to the number line.

(10) A connector 10A similar to the connector 10 to which the other end of the cable 1 is to be connected by pressure connection is attached to the holder 141.
When the connector 10A is inserted into the inside of the holder 141 and the start button 193 of the operation box 190 is pressed, the connector 10A is firmly fixed to the holder 141.

(11) Grasp any core wire 2 of the cable 1 (in this case, it is necessary to grasp the conductor of the core wire), and insert it into the core wire guide groove 52 of the guide bar 135. Then, by operating the foot switch or photo switch, the number line selection is performed by the detector 160 connected to the connector 10, and the number line signal of the detector 160 is passed through the comparator to drive the pulse motor 150 to move the movable base 143, and the connector 10A is set at a contact position corresponding to the number wire. The line selection of the detector 160 and the operation of the pulse motor 150 based on the line signal will be described in detail later. Then, the drive motor 131 is driven, and the core wire 2 is press-connected to the contact in the same manner as described above. Such operations are performed similarly for all contacts.

Next, with reference to the block diagram of the control circuit shown in FIG. 11, the control operation of the pressure welding connection in the case of single pitch feeding and the pressure welding connection in the case of wire selection feeding as described above will be described in detail.

In FIG. 11, when the single pitch feed switch 192 of the work condition setting switches is pressed and the start button 193 is pressed, the pulse motor 1
50 is activated and the connector 10 is moved by one pitch, this is detected by the detection section 151, and the pulse motor 150 is stopped by a signal from the detection section 151 indicating this. The signal from the detection unit 151 is also applied to the gate circuit 153, and the signal from the cable sensor that detects that the core wire 2 of the cable 1 to be connected is inserted into the core wire guide groove 52 of the guide bar 135 is applied. When applied to the other input of the gate circuit 153, the drive motor 131 is energized by the output of the gate circuit 153, and a pressure connection is established. The detection section 152 detects this pressure connection and operates the pulse motor 150 again to perform the next one-pitch feed. In this way, pressure welding connections are made to the contacts one after another.

In FIG. 11, the connector 10, which has been press-connected by the single pitch feed described above, is connected to the coupling connector 181 (corresponding to the coupling connector 5 in FIG. 2) of the detector connection box 180, and the work is being carried out. If you press the wire selection switch 194 of the condition setting switches, press the start button 193, and then touch any one of the core wires 2 at the other end of the cable with the touch sensor 7, the electrostatic charge of that core wire will be removed. Since the capacitance is different from other ones, the scanner 161 of the detector operates the switch of the core number,
A counter 162 scans which line of the switch has been operated and uses it as an electrical signal. The electrical signal is amplified by an amplifier 163 and a detector 164
A signal indicating the contact wire of the connector to which one end of the core wire touched by the touch sensor 7 is connected is output from the BCD converter 165.
It is added to and displayed on the LED display 168.
Therefore, the operator can visually know which number line has been selected. The signal from the BCD converter 165 is also applied to the arithmetic unit 122, and the arithmetic unit 122 calculates the amount of movement pitch for moving the contact to the contact position of the corresponding number line based on the current contact position. On the other hand, in response to the press of the start button 193, the pulse motor 150 is activated, and the connector 10
A is moved. This movement pitch amount is detected by the movement pitch amount detection section 124. Arithmetic unit 122
The amount of pitch to be moved from the pitch amount and the amount of pitch moved from the moving pitch amount detection section 124 are determined by the comparator 12.
3, and when they match, the pulse motor 150 is stopped by the output from the comparator 123, and the movement of the connector 10A is stopped.
This output of comparator 123 is also applied to one input of gate circuit 127. The touch sensor 7
When the signal from the cable sensor that detects that the end of the core wire 2 that was touched by is inserted into the core wire guide groove 52 of the guide bar 135 is applied to the other input of the gate circuit 127, the output of the gate circuit 127 causes The drive motor 131 is energized and the pressure connection is made. The detection unit 128 detects this pressure welding connection and resets the counter 162 to prepare for the next wire selection. In this way, pressure welding connections are made to the contacts according to the selection of wire numbers.

Since the pressure welding connection method and device of the present invention are as described above, they have the following effects.

(1) There is no need for the operator to visually identify the color display of the core wire or read the contact number, thereby eliminating eye fatigue for the operator.

(2) The operator only needs to grab any core wire and insert it into the core wire guide groove 52 of the guide bar 135, so the work is very simple and anyone can easily do it, and there is no possibility of misconnection. This greatly reduces work time.

(3) A series of tasks can be completed in a short period of time, making mass production possible.

[Brief explanation of the drawing]

Figures 1 and 2 of the accompanying drawings are schematic diagrams for explaining the connection principle of the present invention for connecting both ends of the core wires of a multi-core cable to corresponding contacts of each terminal connector, and Figure 3 is a schematic diagram for explaining the connection principle of the present invention. A schematic perspective view showing an embodiment of a pressure connection device for a connector that can perform pressure connection according to the connection principle of the present invention, and FIGS. 4A, B, and C are front and plan views of the pressure connection device shown in FIG. 3. 5 and 6 are partially broken enlarged front views and enlarged plan views of the pressure welding main part of the pressure welding connection device shown in FIG. 3, and FIG. 7 shows the pressure welding part of the pressure welding connection device shown in FIG. 3. FIGS. 8A, B, and C are diagrams schematically showing the order in which the cable core ends are crimped to the connector, and FIG. 3 is an enlarged front view of the operation box of the pressure welding device shown in FIG. 3, FIG. 10 is a flowchart showing the overall operation of the pressure welding device shown in FIG. 3, and FIG. 11 is a diagram showing the control of the pressure welding device shown in FIG. 3. FIG. 3 is a block diagram showing the circuit. 1...Multi-core cable, 2, 2A, 2B... Core wire, 3
A, 3B...Connector, 4A, 4B...Contact,
5... Coupling connector, 6... Detector, 7... Touch sensor, 100... Pressure connection device, 110... Operating table, 1
20... Control box, 130... Pressure contact drive device, 140... Connector fixing moving device, 150...
Pulse motor, 160...Detector, 180...Detector connection box, 190...Operation box, 200
A, 200B...Cable holding arm.

Claims (1)

[Claims] 1. In a multi-core cable connection method for connecting both ends of the core wires of a multi-core cable to contacts of corresponding wires of two connectors, first, the core of one end of the multi-core cable is The wires are randomly connected to the contacts of one connector, and then the one terminal of the core wire at the other end of the multi-core cable is connected to the one end using a detector that detects a change in the electrical state of the core wire. A method for connecting a multi-core cable, characterized in that it randomly detects which numbered wire of the connector is connected to the numbered contact, and connects the other end core wire to the corresponding numbered contact of the other connector. 2. In a multi-core cable insulation displacement connection device for connecting both ends of the core wires of a multi-core cable to contacts of corresponding number wires of two connectors, an operation console and a multi-core cable connected to a contact of a connector provided on the operation console are provided. a pressure welding drive device for pressure welding the core wire ends of the cable; a connector fixing and moving device provided on the operation console for fixing the connector and moving the connector with respect to the pressure welding position; a detector for detecting a change; a coupling connector for connecting a connector connecting core wires of one end of the cable to the detector; Each time the cable is moved by single-pitch feeding, the pressure welding drive device is operated to perform random single-pitch feed pressure welding of each core wire to the contact of the one connector by single-pitch feed, and to connect one end of the cable to the contact of the one connector. Each time when the one connector with the core wire connected thereto is coupled to the coupling connector and the other connector is installed in the connector fixing and moving device, the other connector is selectively sent to the wire in response to a signal from the detector. and a control circuit for controlling the connector fixing moving device and the pressure welding drive device so as to operate the pressure welding drive device to perform wire selection feeding pressure welding connection to the contacts of the other connector by wire selection feeding. A pressure connection device for multi-core cables, which is characterized by the following.