JPH0922746A - Connection structure, terminal structure, and connection device for electric apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection structure, a terminal structure, and a connection device for an electric apparatus in which connection of a coaxial cable is facilitated. SOLUTION: In a first terminal 2A, a first cut part 20A cut from the outer side inward is formed, and a first blade part 21A is formed at an inner edge of the first cut part 20A. In the meanwhile, in a second terminal 2B, a second cut part 20B cut from the outer side inward is formed, and a second blade part 21B is formed at an inner edge of the second cut part 20B. For a tip part 12 of the coaxial cable 1, a second coating material 11B and an outer conductor 10B are cut and eliminated in the condition where a center conductor 10A and a first coating material 11A are left. In this condition, the coaxial cable 1 is pushed in toward both cut parts 20A, 20B, then the first blade part 21A cuts the first coating material 11A at the tip part 12 of the coaxial cable 1 to be pressure contacted with the center conductor 10A, while the second blade part 2B cuts the second coating material 11B of the coaxial cable 1 to get in contact with the outer conductor 10B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire connection structure, a terminal structure, and a wire connection device for connecting a coaxial cable to an electric device.

[0002]

2. Description of the Related Art As shown in FIG. 9 (a), a coaxial cable 1 concentric with one axis has a core wire (center conductor) 10A, a shield wire (outer conductor) 10B, and two wires 10A, 10B. It is composed of a first coating material 11A that insulates and a second coating material 11B that covers the shielded wire 10B. A conventional method of connecting the coaxial cable 1 to a so-called Y terminal will be described.

First, as shown in FIG. 9B, the tip of the coaxial cable 1 is cut twice by a cutter (not shown) to form the core wire 1.
OA and shielded wire 10B are exposed. Further, after twisting the core wire 10A made of a stranded wire, a soldering process is performed so that the core wire 10A does not come apart, and the core wire 10A is connected to the Y terminal. Then, as shown in FIG. 9C, after twisting the meshed shielded wire 10B, the shielded wire 10B is soldered and connected to another Y terminal.

As described above, conventionally, it takes a lot of man-hours to connect the coaxial cable 1 to the terminals, and therefore there is a problem that the work is troublesome. The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to provide a wire connection structure, a terminal structure, and a wire connection device of an electric device that facilitates wire connection of a coaxial cable.

[0005]

Prior to the description of the configuration of the present invention, the principle of the present invention will be described with reference to FIGS. 1 and 2 showing an embodiment. In FIG. 1, the first terminal 2A connected to the central conductor 10A has a first notch from the outside to the inside.
The cutout portion 20A is formed and the first cutout portion 2 is formed.
A first blade portion 21A is formed at 0A. On the other hand, the second terminal 2B connected to the outer conductor 10B is formed with a second notch 20B that is notched from the outside to the inside, and the second notch 20B has a second blade. The portion 21B is formed. The tip portion 12 of the coaxial cable 1 has the second conductor 2 with the center conductor 10A and the first covering material 11A left.
The covering material 11B and the outer conductor 10B are cut and removed. From this state, as shown in Fig. 1 (b), the coaxial cable 1
2A is relatively pushed toward both the cutout portions 20A and 20B, the first blade portion 21A causes the first coating material 11A of the distal end portion 12 (FIG. 1) of the coaxial cable 1 to move as shown in FIG. 2A. By cutting, the inner edge of the first cutout portion 20A comes into contact with the central conductor 10A, and as shown in FIG. 2B, the second blade portion 21B is formed.
However, the second coating material 11B of the coaxial cable 1 is cut, and the inner edge of the second cutout portion 20B contacts the outer conductor 10B.

By adopting such a connection structure, the troublesome work of twisting the center conductor 10A and the outer conductor 10B to perform the soldering process becomes unnecessary. Therefore, the number of wiring steps can be significantly reduced. This principle is embodied as the following three inventions.

[0007]

That is, the wire connecting structure of the first invention is a wire connecting structure of an electric device in which a coaxial cable is connected to a terminal. In the wire connecting structure of the coaxial cable, the center conductor and the first coating material are left at the tip of the coaxial cable. In this state, the second covering material and the outer conductor have been cut and removed, and the first conductor connected to the center conductor
The terminal is formed with a first notch that is cut from the outside to the inside, and a first blade is formed in the first notch, and the second terminal is connected to an external conductor. Is formed with a second notch portion that is notched from the outside to the inside, and a second blade portion is formed in the second notch portion, and the first blade portion is the tip portion of the coaxial cable. The inner edge of the first cutout portion contacts the central conductor in the state where the first coating material is cut, and the second blade portion cuts the second coating material of the coaxial cable and the inner edge of the second cutout portion becomes the outer conductor. Are in contact.

The terminal structure of the second invention is a terminal structure of an electric device comprising a first terminal to which a center conductor of a coaxial cable is connected and a second terminal to which an outer conductor of the coaxial cable is connected. The terminal has a first notch portion that is notched from the outside to the inside and the inner edge contacts the central conductor, and the second terminal is notched from the outside to the inside and the inner edge contacts the outer conductor. The 1st blade part which has a 2nd notch and which cuts the 1st coating material which insulates between a center conductor and an outer conductor and makes an inner edge of the 1st notch contact a center conductor is formed in the 1st notch. ,
The second notch is formed with a second blade that cuts a second covering material that covers the outer conductor to bring the inner edge of the second notch into contact with the outer conductor, and the first terminal and the second terminal are parallel to each other. To
Moreover, they are arranged to face each other.

The wire connecting device of the third invention is a wire connecting device for electric equipment for connecting a coaxial cable to a terminal, and has an insertion hole into which the coaxial cable is inserted, and by inserting the coaxial cable into the insertion hole. A cable supporting portion that supports the coaxial cable, a first terminal that is connected to the center conductor, a second terminal that is connected to the outer conductor, and a terminal supporting portion that supports both terminals are provided, and the terminal supporting portion is a cable. A first blade portion is formed on the first terminal so as to bring the first terminal into contact with the central conductor by cutting the first covering material when the first covering material is relatively moved toward the support portion, and at the time of the movement, the second covering material is formed. Second by cutting
A second blade portion for contacting the terminal with the outer conductor is formed on the second terminal.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show the first embodiment. FIG. 1 (a)
At the tip portion 12 of the coaxial cable 1, the core wire 10A
And the second coating material 1 with the first coating material 11A left.
1B and the shield wire 10B are cut and removed by a cutter (not shown). The first coating material 11A and the second coating material 11B are generally formed of resin or rubber.

The first terminal 2A is connected to the core wire 10A, and is connected to the first terminal 2A from outside (above) to inside (below).
A first notch portion 20A that is notched toward is formed. At the inner edge of the first cutout portion 20A, for example, a first blade portion 21A having a tapered edge is formed. First
When the coaxial cable 1 is pushed in the direction of arrow A, the blade portion 21A causes the first coating material 11A of the tip portion 12 of the coaxial cable 1 to move in the tangential direction of the cross section of the core wire 10A as shown in FIG. 1 (b). 2 along with the core wire 10 as shown in FIG.
Contact A. In addition, the first terminal 2A has a first notch 2
A slit 23 extending inward from 0A is formed,
The slit 23 generates a spring force that brings the first blade portion 21A into contact with the core wire 10A.

The second terminal 2B in FIG. 1A is a shielded wire 1
The second terminal 2B is formed with a second cutout portion 20B that is cut out from the outer side (upper side) to the inner side (lower side). The inner edge of the second cutout portion 20B has, for example, a second blade portion 21B formed by cutting the edge into a tapered shape.
Are formed. The second blade portion 21B is the coaxial cable 1
When is pushed in the direction of arrow A, as shown in Fig. 1 (b),
The second coating material 11B of the coaxial cable 1 is connected to the shield wire 10B.
2B is cut along the tangential direction of the cross-section thereof and contacts the shield wire 10B as shown in FIG. It should be noted that the slit 2 extending inward from the second cutout portion 20B is also formed on the second terminal 2B.
3 are formed.

As shown in FIG. 1 (a), the first terminal 2A and the second terminal 2B are arranged parallel to each other and facing each other.

Next, a wire connecting device for the sensor amplifier having the above-mentioned terminal structure will be described. In FIG. 3, a cable support portion 4, a terminal support portion 5 and an operation portion 6 are housed in the case body 3A and the lid body 3B of the sensor amplifier. The case body 3A, the terminal support portion 5 and the cable support portion 4 are formed with insertion holes 30 and 50 and an insertion hole 40 into which the coaxial cable 1 is inserted from the side of the case body 3A, respectively. The insertion hole 40 of the cable support portion 4 includes a small-diameter hole 41 and a large-diameter hole 42 into which the small-diameter tip portion 12 of the coaxial cable 1 and the large-diameter portion 13 which has not been cut and removed fit, respectively. The coaxial cable 1 inserted into the hole 40 is supported in the radial direction when the cable support portion 4 described later moves. In this embodiment, the terminal supporting portion 5 supports two sets of the first terminal 2A and the second terminal 2B (see FIG. 5).

FIG. 4 is a plan sectional view of FIG. Both terminals 2
A and 2B enter into the terminal entry slits 43A and 43B formed in the cable support portion 4, and when the cable support portion 4 moves in the direction of arrow A, the terminal entry slit 4 is formed.
The coaxial cable 1 can be cut by being guided by 3A. In addition, the terminal entry slit 43
A and 43B are formed so that both terminals 2A and 2B can enter toward the direction orthogonal to the axial direction of the insertion hole 40.

In FIG. 5A, the operating portion 6 has a driving node surface 61 that engages with the driven node surface 44 formed on the cable supporting portion 4, and the cable supporting portion 4 is connected to the terminal supporting portion 5. It is to move toward. That is, as shown in FIG. 5B, by pushing the operation portion 6 downward, the driving node surface 61 pushes the driven node surface 44 to the right side, and the cable support portion 4 is pushed to the terminals 2A and 2B side. As shown in FIG. 3, the operation portion 6 is constantly pushed upward by the compression coil spring 7, and when pushed downward from the state of FIG.
It is provided with a latch mechanism (not shown) which stands still in the state of (b) and returns to the state of FIG. 5 (a) when pushed further downward from the state of FIG. 5 (b).

Next, the connection method will be described. First, as shown in FIG. 6A, the coaxial cable 1 is inserted into the case body 3A, the terminal support portion 5, and the insertion hole 3 of the cable support portion 4.
0, 50 and the insertion hole 40. At this time, by pushing the coaxial cable 1 deeply, the end of the large-diameter portion 13 of the coaxial cable 1 abuts on the tip of the large-diameter hole 42, so that the coaxial cable 1 is moved not only in the radial direction but also in the axial direction. Positioned. After that, when the operating portion 6 of FIG. 5A is pushed downward, the driving joint surface 61 pushes the driven joint surface 44 to the right.
As a result, the cable support portion 4 supporting the coaxial cable 1 moves toward the terminal support portion 5 as shown in FIGS. 5B and 6B. At this time, as shown in FIG. 2A, the first blade portion 21A of the first terminal 2A has the first coating material 11A.
The first terminal 2A is connected to the core wire 10A by cutting and contacting the core wire 10A. At the same time, the second blade portion 21B of the second terminal 2B of FIG. 2B cuts the second coating material 11B and contacts the shield wire 10B, so that the second terminal 2B is connected to the shield wire 10B.

As described above, according to this terminal structure, when connecting the coaxial cable 1, the core wire 10A of the coaxial cable 1 is connected.
It does not require a troublesome work such as twisting the shield wire 10B and soldering. Therefore, the number of wiring steps can be significantly reduced.

Further, this wire connection device is shown in FIGS. 6 (a) and 6 (b).
As described above, the coaxial cable 1 is supported by the cable support portion 4 having the insertion hole 40, and the cable support portion 4 is connected to both terminals 2A,
By moving the coaxial cable 1 to both terminals 2A and 2B by moving it toward 2B, even an inexperienced person can extremely easily perform the wiring work. In particular, FIG.
Pushing in the operating portion 6 of (b), the driving node surface 6 of the operating portion 6
1, the driven node surface 44 of the cable supporting portion 4 is pushed, that is, since the cam mechanism is used, the operating portion 6 can be pushed downward with a small force, so that the wiring work is further facilitated. be able to.

By the way, the second blade portion 21B of the second terminal 2B of FIG. 2B is in contact with the shield wire 10B,
When the temperature changes, the resin forming the first coating material 11A has a larger body expansion coefficient (coefficient of thermal expansion) than the metal forming the second terminal 2B.
There is a risk that it will not come into contact with 0B with a sufficiently large force,
In this case, the contact resistance increases. Therefore, it is preferable that the resin constituting the first coating material 11A has a body expansion coefficient as close to that of metal as possible, and, for example, Teflon resin is used.

Further, in this embodiment, as shown in FIG. 6 (b), the coaxial cable 1 is sandwiched by the cable supporting portion 4 while being bent in the direction orthogonal to the arrow B direction.
The structure is strong against pulling in the direction of arrow B.

The coaxial cable 1 may be bent in the same direction as the pushing direction of the operating portion 6 so that the coaxial cable 1 has a structure resistant to pulling in the direction of arrow B.

FIG. 7 shows a second embodiment. In this embodiment,
The coaxial cable 1 of FIG. 7A is inserted from above the case body 3A. Further, in the present embodiment, the terminal support portion 5 is structured to move to the right side toward the cable support portion 4, and the terminal support portion 5 slides on the driving joint surface 61 of the operation portion 6 and the driven joint surface 54. have. Therefore, by pushing the operating portion 6 downward, the terminal supporting portion 5 moves toward the cable supporting portion 4 and the terminals 2A and 2B are connected to the coaxial cable 1 as shown in FIG. 7B. . In addition, the terminal support portion 5 is formed with a retaining portion 55 that prevents the second coating material 11B of the coaxial cable 1 from being pulled out and prevents the second coating material 11B from being pulled out. Other configurations are the same as those in the first embodiment, and the same portions or corresponding portions will be denoted by the same reference numerals and the description thereof will be omitted.

The present invention is also applicable to electrical equipment (including electronic equipment) other than the sensor amplifier. Further, in the case of the above embodiment, the double-edged portions 21A and 2A of FIG.
1B was formed by cutting the inner edges of both notches 20A and 20B into a tapered shape, but it is not necessary to cut into a tapered shape.
It may be thin or sharp enough to cut the first coating material 11A or the second coating material 11B. Also,
In the case of the above-described embodiment, the double-edged portions 21A and 21B are formed over the entire circumference of the inner edges of the double-sided notched portions 20A and 20B. You may form in a part of inner edge of the parts 20A and 20B.

In each of the above embodiments, the operation unit 6 shown in FIG. 7 is used.
However, the operation section 6 is not always necessary. For example, the cable support section 4 is formed on the lid body 30B, and the lid body 3 is formed.
The structure in which the coaxial cable 1 and the terminals 2A and 2B are connected when the 0B is attached to the case body 30A may be used. Further, as shown in FIGS. 8A and 8B, the pair of terminals 2A and 2B may extend in a direction slightly inclined with respect to the cross section of the coaxial cable 1.

Further, in each of the above-mentioned embodiments, one second terminal 2B is provided for one coaxial cable 1, but FIG.
As shown in (c), a pair of second terminals 2B, 2B may be provided in parallel to each other and facing each other. This way,
The reliability of contact between the second terminal 2B and the shield wire 10B (FIG. 1) is improved.

[0027]

As described above, according to the first aspect of the invention, the first blade portion of the first terminal cuts the first covering material so that the first terminal contacts the central conductor and the second terminal Since the second blade portion cuts the second coating material and the second terminal is in contact with the outer conductor, the troublesome work of twisting the center conductor and the outer conductor to perform soldering is not necessary. . Therefore, the number of wiring steps can be significantly reduced.

Further, according to the invention of claim 3, since the pair of terminals are arranged in parallel to each other and opposite to each other, the structure in which the coaxial cables are simultaneously cut and contacted by the two blade portions is simple. Can be realized.

According to the invention of claim 4, since the spring force is exerted by the slit, the reliability of contact between each terminal and the conductor can be improved with a simple structure.

On the other hand, according to the invention of claim 5, since the pair of second terminals is provided, the reliability of contact between the second terminal and the external conductor is improved.

According to the invention of claim 6, a cable supporting portion having an insertion hole for inserting the coaxial cable and a terminal supporting portion supporting both terminals are provided, and one supporting portion is provided on the other supporting portion. Wiring work can be performed by a simple operation of moving relatively toward each other.

[Brief description of drawings]

FIG. 1 is a perspective view showing a wire connection structure of the present invention.

FIG. 2 is a sectional view of the same.

FIG. 3 is a vertical cross-sectional view showing a connection device according to the first embodiment.

FIG. 4 is a plan sectional view of the same.

FIG. 5 is a cross-sectional view showing a connection method.

FIG. 6 is a plan view of the same.

FIG. 7 is a cross-sectional view of a wire connection device showing a second embodiment.

8A and 8B are cross-sectional views of the wire connection device showing the third embodiment, and FIG. 8C is a perspective view of the terminal structure showing the fourth embodiment.

FIG. 9 is a perspective view of a coaxial cable showing a conventional connection method.

[Explanation of symbols]

 1: Coaxial cable 10A: Central conductor 10B: Outer conductor 11A: First coating material 11B: Second coating material 12: Tip portion 13: Large diameter portion 2A: First terminal 2B: Second terminal 20A: First cutout portion 20B : 2nd notch part 21A: 1st blade part 21B: 2nd blade part 23: Slit 4: Cable support part 40: Insertion hole 41: Small diameter part 42: Large diameter part 43A, 43B: Slit for terminal entry 5: Terminal support Part 6: Operation part

Claims (10)

[Claims] 1. An electric device for connecting a coaxial cable, comprising a central conductor, an outer conductor, a first covering material for insulating between the conductors, and a second covering material for covering the outer conductor, to a terminal. In the wire connection structure, a tip portion of the coaxial cable may include the central conductor and the first conductor.
The second covering material and the outer conductor are cut and removed with the covering material left, and the first terminal connected to the central conductor has a first notch cut out from the outside to the inside. Part is formed, a first blade part is formed in the first cutout part, and a second cutout part cut out from the outer side to the inner side is formed in the second terminal connected to the outer conductor. A second blade portion is formed in the second cutout portion, and the first cutout portion cuts the first coating material at the tip end portion of the coaxial cable, and the first cutout portion is formed. The inner edge of the portion contacts the central conductor, and the inner edge of the second cutout portion contacts the outer conductor in a state in which the second blade portion cuts the second covering material of the coaxial cable. Wiring structure for electrical equipment. 2. The first terminal and the second terminal according to claim 1.
A terminal is a wire connection structure for electrical equipment that is arranged parallel to and opposite to each other. 3. A terminal structure of an electric device, comprising: a first terminal to which a center conductor of a coaxial cable is connected; and a second terminal to which an outer conductor of the coaxial cable is connected, wherein the first terminal is an external A first cutout portion that is cut inward from one side to the inside and has an inner edge in contact with the central conductor, the second terminal is cut out from the outside to the inside, and the inner edge is in contact with the outer conductor. A first blade portion having two notches, in which the first covering material that insulates between the central conductor and the outer conductor is cut so that the inner edge of the first notch contacts the central conductor is formed in the first notch. A second blade portion is formed in the second cutout portion so as to cut a second coating material that covers the outer conductor to bring an inner edge of the second cutout portion into contact with the outer conductor, the first terminal and the second terminal. Characterized in that the terminals and the terminals are arranged in parallel to each other and facing each other. Terminal structure of the gas equipment. 4. The slit according to claim 3, wherein each of the terminals has a slit formed inward from each of the notches to generate a spring force for contacting the blades with the conductors. The structure of the terminal of the electrical equipment. 5. The terminal structure for an electric device according to claim 3, wherein a pair of the second terminals are provided, and the second terminals are arranged in parallel and opposite to each other. 6. A wire connection of an electric device for connecting a coaxial cable to a terminal, which comprises a center conductor, an outer conductor, a first covering material for insulating between the conductors, and a second covering material for covering the outer conductor. A device, which has an insertion hole into which the coaxial cable is inserted, and which supports the coaxial cable by inserting the coaxial cable into the insertion hole, and a first terminal connected to the center conductor A second terminal connected to the outer conductor, and a terminal supporting portion supporting the both terminals, and the first coating when the terminal supporting portion is relatively moved toward the cable supporting portion. A first blade portion is formed on the first terminal so that the first terminal is brought into contact with the central conductor by cutting the material, and the second terminal is brought into contact with the outer conductor by cutting the second covering material during the movement. Form the second blade on the second terminal Wiring device for electrical equipment 7. A cam mechanism according to claim 6,
A wire connection device for an electric device, comprising an operation unit for moving the terminal support unit or the cable support unit. 8. The electrical device according to claim 6, wherein the cable support portion is formed with a terminal entry slit that guides the terminals to enter in a direction intersecting the axial direction of the insertion hole. Equipment connection device. 9. The insertion hole according to claim 6, wherein the insertion hole is the first
A wire connecting device for an electric device, comprising a small diameter hole into which a covering material is inserted and a large diameter hole into which a second covering material is inserted. 10. The wiring device for an electric device according to claim 6, which has the terminal structure for the electric device according to claim 3.