JPS6018109B2 - Terminal retainer - Google Patents

Description

[Detailed Description of the Invention] {a} Description of the Technical Field The present invention relates to a retaining device for a connecting terminal that makes iron-to-metal contact by insertion, which has recently been widely used as an external connecting terminal for equipment or as a terminal block device. be.

‘b} Description of prior art A conventional configuration is illustrated in FIG.

The contact part 3 is attached to the terminal block block to which the connection piece 2 is fixed.
a and an insulating coating 3b, and a connecting wire 4.
A so-called terminal with a connecting wire, which is electrically and mechanically connected to the terminal, is constructed so that the terminals are electrically and electrically connected to each other by insertion.

For example, this structure is known as a commercially available "Faston type connection method", and the connecting piece 2 is connected to a "Faston tap (male side)".
”, connect terminal 3 to “Faston receptacle (female side)
”.

In this structure, as shown in FIG. 1, the connecting wires 4 are collected and connected to a fixture, for example, a fixture 6, at a certain distance from the terminal block 1, using a mounting bracket 6'. By fixing it, the connecting wire 4 is prevented from being subjected to weight due to its own weight, vibration, etc., and serves to prevent it from coming off.

However, the drawback in this case is that when you try to bundle the connecting wires 4 near the terminal block 1, force is applied to the connecting terminals 3 so that they bend at a certain angle, and the connecting terminals 3 work in the direction that they come out. The space factor is poor as the distance from the station to the fixed location cannot be reduced by 4 days.

Also, except for gathering all the connecting wires 4 in one place or two or three places and fixing them to the east line, for example, fixing 10 to 20 wires individually is a problem of man-hours, space for fixing, etc. It is disadvantageous. Furthermore, as mentioned above, since the distance between the terminal block 1 and the fixed position cannot be made small, there is a high possibility that hands or tools may accidentally get caught in the connecting wire 4 between the terminal block 1 and the fixed position. It has a fatal flaw in that it cannot be recognized, and a countermeasure is desired.

'c} Purpose of the Invention The purpose of the present invention is to provide a large space for fixing as described above;
This technology eliminates the drawbacks of the conventional technology, such as the inability to prevent individual connected wires from coming off, the long distance to the fixed position, and the incomplete (uncertain) ability to prevent the wires from coming off between them. An object of the present invention is to provide a retaining device for a terminal or terminal block device.

[d' Structure of the invention FIG. 2 shows a block diagram of the present invention, and FIG. 3 shows a diagram showing the construction process.

First, referring to FIG. 2, it is the same as the conventional technology up to the point that the terminal block 1, the connecting piece 2, the connecting terminal 3 consisting of the contact part 3a and the insulation coating 3b, and the connecting wire 4 are connected. .

However, the present invention differs from the prior art in that it has a mounting hole la for a fixture 6 for mounting and fixing the retainer plate 5 on the terminal block 1. A perspective view of the terminal block 1 and the connection piece 2 is shown in FIG. Fixing bracket mounting hole la of terminal block 1
The above-mentioned fixing device 6 is attached to the part, and the distance h between the connecting terminal 3 connected to the connecting wire 4 and the insulation coating part 3b is 0 to
The above-mentioned retaining plate 5 is inserted into the groove 5a at a position where the distance from the terminal block is an extremely small distance from the terminal block.
It is fixedly attached using a set screw 8 and a washer 7 with the connecting wire 4 passed through it.

In addition, on the distance day, the connecting terminal 3 is in complete contact with the connecting piece 2. This is the distance to the end of the insulating sheathing part 3b in a state where they are iron-coupled, or the dimension with approximately one foot added to this distance.

Next, FIG. 3 shows that the connecting wire 4 is inserted into the groove of the retaining plate 5 after the retaining plate 5 is connected to each connecting terminal 3 before the retaining plate 5 is installed as shown in FIG. 5a, in which the wire is inserted from the direction of arrow x, that is, from a side surface substantially perpendicular to the succeeding wire 4, like a so-called comb. At this time, the groove 5a of the retaining plate 5 is in the shape of a so-called notch groove with one end open as shown in FIG. Configure as shown. The groove dimension of the groove 5a of the retaining plate 5 is A, the outer flange dimension of the connecting wire 4 is B, and the insulation coating part 3 of the connecting terminal 3
The dimensional relationship between b and the larger dimension C is set such that B×A<C.

As a result, the connecting wire 4 is passed through the groove 5a, and the retaining plate 5 is finally attached and fixed to the fixture 6 as shown in FIG.

Incidentally, FIG. 4 shows a needle perspective view of the terminal block 1 and the connecting piece 2. Further, FIG. 5a shows a view in which the connecting terminal 3 and the trailing light wire 4 are combined, and FIG. 5b shows a cross-sectional view of the combined portion. In FIG. 5b, the core wire portion 4a of the connecting wire 4
Crimp so that o is electrically and mechanically connected to a part of the contact part 3a of the connecting terminal 3, and a part of the insulation covering of the connecting wire 4 and the insulation covering part 3b of the connecting terminal 3 are mechanically connected. A nearly uniform shape was created using a special tool. It is press-molded so that it has a predetermined bonding strength in terms of dimensions, and the dimension C portion of the insulating coating 3b formed during this molding has considerable hardness.

{e-- For the terminal block 1 having the working connection piece 2 and the fixing metal fitting 6 of the invention, a connecting terminal with a connecting wire that combines the connecting terminal 3 and the connecting wire 4 shown in FIGS. 5a and 5b is attached. Insert the corresponding connection piece 2 using the insertion tool, and connect it to Fujiai. bring into contact.

In this state, as shown in Fig. 3, insert the retaining plate 5 from the direction of the arrow x, pass the connecting wire 4 through each groove 5a of the corresponding retaining plate 5, and remove it with the setscrew 8 and washer 7 as shown in Fig. 2. The stop plate 5 is configured such that the distance between it and the terminal block 1 is h, and the distance between it and the end of the insulation coating 3b of the connection terminal 3 is h. In this state, in the direction of arrow Z in Fig. 2, that is, the connection terminal 3
Even if a force is applied in the direction of pulling out the connecting terminal 3, a part of the insulating coating 3b of the connecting terminal 3 is caught on the retaining plate 5, and the retaining plate 5
It serves to prevent the connecting terminal with the connecting wire from coming off until it reaches various limits, such as deformation of the insulation coating 3b, destruction of the insulating coating 3b, or damage to the connection between the connecting wire 4 and the connecting terminal 3. In addition, since the distance between the end of the insulating coating 3b and the retaining plate 5 is h, by setting h = 0 to 1 side, it is possible to automatically prevent insufficient insertion of the connection terminal 3. It produces a secondary action or effect that can be detected or corrected, and the state of complete insertion can be achieved.

Since the connecting terminal 3 and the connecting wire 4 are bonded using a crimping tool, the shape and dimensions are uniform as described above, and the tensile strength is, for example, several tens of kg. It can withstand a tensile force of, for example, less than or around 1 kg when accidentally pulled or hung. In addition, there is no need to use a highly rigid material such as a steel plate for the retaining plate 5, and there are many plastic molded products in recent years that have excellent mechanical properties such as hardness and tensile strength, such as acrylic resin or hard vinyl chloride. Made of transparent and opaque brass, it is durable enough to withstand use. 'fi Other Embodiment '1' As shown in FIG.
Insert the pongee hole 9 into the side groove 5a with the caulking pin 10.
It is configured to be fixed by b and 5d and rotated in the Y and Y directions, and the thickness of the retaining plate 5 is reduced and the weight is reduced by using plastic, as in the above embodiment.

Although the '2' connection terminal 3 and the connection piece 2 have been described with reference to the Faston type connection method, the connection method is not limited thereto.
Applicable to all products having a relationship between the C dimension of the groove 5a and the A dimension of the groove 5a.

'3} When the retaining plate 5 has the shape shown in FIG. 6 and is made of an insulating material such as plastic, the insulating coating portion 3b may be made of metal such as aluminum or copper.

[41 If there are other terminal blocks or devices facing the terminal block 1, install a retaining plate 5 on the side of these other terminal blocks or devices.
may be fixed.

In this case, the distance h' between the insulating coating 3b and the retaining plate is set as in the case of FIG. 2. Cough) Comprehensive Effects According to the present invention, the slip-off prevention plate 5 having an extremely simple structure is wired. By inserting and fixing after the connection work [11
To prevent a connecting terminal with a connecting wire from coming off is an extremely simple operation, and a complete preventing action can be performed, and it is possible to prevent each connecting terminal with a connecting wire from coming off one by one.

■ Since the interval from the terminal block 1 to the stopper plate 5 only needs to be equal to or less than the length of the succeeding terminal 3, the space required for retaining or fixing is much improved compared to the conventional method, which further reduces the possibility of slippage. It is also possible to bend the connecting wire directly after the stop plate.

Glue When inserting the retaining plate 5, incomplete insertion of the connection terminal 3 can be detected (due to protrusion of the insulation coating 3b, misalignment, etc.), and by attaching the retaining plate 5 to the fixed odor 6, it can be automatically detected. It is possible to correct incomplete insertion and make it fully inserted.

It also serves as a so-called failsafe.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a conventional device, FIG. 2 is a diagram showing a zero configuration of the present invention, FIG. 3 is a diagram showing a method of attaching a retaining plate of the present invention, and FIG. 4 is a diagram showing a terminal block block. Fig. 5a is a perspective view of the connection terminal with bushing wire, Fig. 5b is a sectional view showing the connected state of Fig. 5a, Fig. 6 is a view showing the retaining plate of the present invention, Fig. 7 is FIG. 8 is a diagram showing the dimensional relationship between the groove, the connecting wire, and the insulating coating, and FIG. 8 is a diagram showing another embodiment of the retaining plate. DESCRIPTION OF SYMBOLS 1...Terminal block, 2...Connection piece, 3...Connection terminal, 3a...Contact part, 3b...Insulation coating part, 4
... Connection 0 electric wire, 5 ... Retention prevention plate, 5a ... Groove, 6 ... Fixed odor. Figure 1 Figure 4 Figure 2 Figure 3 Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

[Claims] 1. A terminal block with a plurality of connecting pieces arranged in parallel, and a terminal block that is installed to be freely insertable and removable with respect to the connecting piece, and is fixedly connected to the end of the connecting wire, and the dimensions of the insulating coating are the same as those of the connecting wire. The terminal block has a connecting terminal that is thicker than the diameter of the connecting terminal, and a dimension that is slightly longer than the dimension from the end face of the terminal block block to the insulation coating of the electric wire when the connecting piece and the connecting terminal are in a normal connection state, and A fixture fixed to the end face of the block and a plurality of long grooves are provided in parallel so that the plurality of connected connection wires can be inserted all at once, and the width of the long groove is set to the insulating coating of the connection terminal. a substantially comb-shaped retaining plate selected to be smaller than the dimensions of the connecting wire and larger than the diameter of the connecting wire, and a fixing device that fixes the retaining plate and the fixing device when the retaining plate is inserted to the correct position. A terminal retaining device consisting of a member.