JP2003109686A - Relay terminal block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small electric device using an integral connection relay terminal block to reduce complicated work of once removing a crimp terminal of internal wiring screw-fastened to a relay terminal and then placing the crimp terminal and a crimp terminal of external wiring coaxially in piles to screw- fasten them. SOLUTION: This relay terminal block comprises a nut function at a base part of the terminal block; an insertion groove of a metal plate for locking the crimp terminal, formed in a short-circuit preventing side wall surface rising from the upper face of the base part; a through hole in the center part, and a positioning function provided at the outer peripheral part of the through hole and fitted to the crimp terminal; and a locking part fixed into the insertion groove. A capacitor is enclosed at the bottom part of the relay terminal block to constitute a small noise filter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a relay terminal block used for electrical equipment such as a transformer and a power supply filter for connecting to a crimp terminal of external wiring, and a noise filter using the relay terminal block.

[0002]

2. Description of the Related Art As an example, electric appliances such as a box transformer and a noise filter for a power source are provided at both ends of a case.
The crimp terminal 10 to which the internal wiring (not shown) is crimp-connected is screwed to the relay terminal shown in FIG. 2 or 3 for connecting the external wiring, and the performance inspection is performed. The electric device is attached to an electric device, and after removing the screw of the relay terminal, the crimp terminal of the external wiring is tightened and fixed to the relay terminal with the screw to be connected to form the electric device.

In a conventional relay terminal block, as shown in FIG. 2, a pair of round or Y-shaped crimp terminals 10 to which a conducting wire (not shown) for wiring is crimp-connected is mechanically fixed. An independent connection type relay in which a plurality of pairs of independent screw-fastened connection parts to be electrically connected are lined up and mounted on the base 1 made of insulating resin, and the internal wiring and the external wiring of the electric appliance are respectively screwed separately. A terminal block is used.

Such an independent connection type relay terminal block having a pair of independent screw-fastened connection portions for separately screwing the internal wiring and the external wiring of the electric appliance is installed inside the electrical equipment. Although the wiring can be directly connected to the external wiring, the thickness of the relay terminal block increases,
Further, a large amount of material is used, and the screw and nut portions are required to be doubled, resulting in an increase in cost.

On the other hand, as shown in FIG. 3 in which the above-mentioned drawbacks are improved, a pair of crimp terminals 10 are concentrically stacked and screwed together to mechanically fix and electrically connect to each other with a screwed connection portion. There is also used an integrated connection type relay terminal block that is mounted on a base 1 made of an insulating resin side by side and is integrally screwed to the internal wiring and the external wiring of an electric appliance.

Such an integrally-connecting type relay terminal block in which the internal wiring and the external wiring of an electric appliance are integrally screw-fastened has a small thickness and can reduce the material cost and the material cost. When you attach it to and connect external wiring,
It is necessary to temporarily remove the crimping terminal of the internal wiring screwed to the relay terminal, and concentrically overlap the crimping terminal of the external wiring with the crimping terminal to fix the screw.

[0007]

DISCLOSURE OF THE INVENTION The present invention provides an electric appliance for an integrally connected type relay terminal block which is improved in that the thickness of the independently connected type relay terminal block is large and the material cost and the material cost are increased. When mounting on equipment and connecting external wiring, temporarily remove the crimp terminal of the internal wiring that is screwed to the relay terminal and screw it concentrically with the crimp terminal of the external wiring and screw it on. That is.

[0008]

In a relay terminal block having a plurality of connecting parts, in which two crimp terminals to which conductors are connected are concentrically stacked and fixed by screws, a nut function is provided on a base part of the terminal block. And a side wall surface for preventing a short circuit that rises from the upper surface of the base part, an insertion groove for the metal plate for locking the crimp terminal, a through hole in the central portion, and a positioning for fitting the crimp terminal at the outer peripheral portion of the through hole. And a metal plate for locking the crimp terminal having a locking portion for fixing the insertion groove.

As shown in the cross-sectional view taken along the line AA of FIG. 1, the nut function 3 is provided on the insulating resin base 1 of the terminal block, and the side wall surface 2 for preventing a short circuit rising from the upper surface of the base 1 is shown in FIG. 4, the insertion groove 5 of the metal plate 6 for locking the crimp terminal, the through hole 7 in the central portion shown in FIG. 4, and the positioning function 8 for fitting the crimp terminal to the outer peripheral portion of the through hole, And a metal plate 6 for locking a crimp terminal having a locking portion 9 to be fixed in the insertion groove 5 shown in FIG. The nut function for tightening and fixing the screw is to embed the nut when molding the base made of insulating resin, or to form a recess for preventing rotation for mounting the nut, and to mount the nut during assembly. You may install in a recessed part. In addition, as a positioning function of the crimp terminal, the protrusion that fits into the crimp terminal can be provided inside or outside the screw tightening portion of the crimp terminal.

Further, according to the present invention, in a relay terminal block having a plurality of connecting parts for concentrically stacking and crimping two crimp terminals to which conductors are connected, a hollow part is provided at the bottom of the base of the terminal block. And a nut function on the upper part thereof, a side wall surface for preventing a short circuit rising from the upper surface of the base part, an insertion groove of the metal plate for locking the two crimp terminals, a through hole in the central part, and a through hole of the through hole. A metal plate for locking the crimping terminal, which has a positioning function for fitting the crimping terminal on the outer peripheral portion, and a locking portion for fixing the crimping terminal in the insertion groove, and a through hole in a substantially central portion of one surface bent to have an L-shaped section. And a fixing plate having a lead-out hole for soldering on the other surface of the through hole and a protrusion to which the crimp terminal fits.

The hollow portion 12 at the bottom of the base shown in the sectional view taken along the line AA in FIG. 6 and the nut function 3 on the upper base thereof are provided on the side wall surface 2 for preventing a short circuit rising from the top surface of the base portion. The base of the relay terminal block having the insertion groove 5 of the metal plate for locking the crimp terminal is provided with the through hole 7 in the central portion shown in FIG. 11 and the locking portion 9 fixed to the insertion groove. Stop metal plate 6
And a through hole 7 is provided in the substantially central portion of one surface bent into an L-shaped cross section shown in the plan view and the cross sectional view of FIG. 7, and the crimp terminal is fitted to the outer peripheral portion of the through hole as a positioning function of the crimp terminal. A lead wire insertion hole 1 for soldering is provided on the other surface, which is provided with a protrusion 8 to be fitted.
And an L-shaped metal plate 14 having a cross section.

Further, according to the present invention, a hollow portion is provided at the bottom of the base of the terminal block, a nut function is provided at the top of the hollow portion, and a short-circuit preventing side wall rising from the top surface of the base is used for locking two crimp terminals. An insertion groove of a metal plate, a through hole in a central portion, a positioning function of fitting a crimp terminal to an outer peripheral portion of the through hole, and a metal plate for locking a crimp terminal having a locking portion for fixing the insertion groove. , A through hole is provided in an approximately central portion of one surface bent to have an L-shaped cross section, a projection portion to which a crimp terminal is fitted is provided on an outer peripheral portion of the through hole, and a lead wire insertion hole for soldering is provided on the other surface. A relay terminal block including a fixed plate is provided, a capacitor is mounted in the hollow portion at the bottom of the base, and a noise filter is formed by connecting the capacitor terminal to the lead wire insertion hole.

As shown in the cross sectional view of FIG. 9, crimp terminals at both ends of the toroidal coil 15 are arranged in a hollow space at the bottom of the base, and a relay terminal is connected by soldering to a lead connecting hole of an L-shaped metal plate in cross section. Connect the bases to form a noise filter. As a result, the capacitor and the relay terminal block, which are conventionally arranged side by side, are three-dimensionally overlapped and the occupied area is reduced, so that a small noise filter can be configured. Further, the connection of the crimp terminal of the external wiring when mounted on the device can be easily screwed and fixed because the crimp terminal of the internal wiring is fixed as described above and does not come off.

[0014]

DETAILED DESCRIPTION OF THE INVENTION

Embodiment 1 A positioning function 8 in which the outer peripheral portion of a through hole 7 formed by punching out the central portion of the locking metal plate 6 shown in FIG.
5, the crimp terminal 10 to which internal wiring (not shown) is connected is fitted concentrically, and the insertion provided in the insulating resin base 1 shown in the sectional view of FIG. It was inserted into the groove 5 and fixed by the engaging portion 9 to the groove of the metal plate 6 for engaging the crimp terminal shown in FIG. This prevents the crimp terminal to which the internal wiring is connected from coming off, and facilitates the connection of the external wiring after the electric device is mounted on the device.

[0015]

Second Embodiment As in the first embodiment, internal wiring (not shown) is provided for the positioning function 8 in which the outer peripheral portion of the through hole 7 punched out in the central portion of the L-shaped locking metal plate 14 in FIG. 7 is projected. (3) is connected concentrically with each other, and is inserted into the lower insertion groove 5 provided in the base having the mounting hole 4 made of insulating resin shown in the sectional view of FIG. 11 and then insert the metal plate 6 for engagement shown in FIG. 11 into the insertion groove 5 on the upper side and fix it at the engagement part 9 to fix the relay terminal block to which the crimp terminal to which the internal wiring is connected is fixed. Configured.

After the electric equipment is mounted on the equipment, the crimp terminal to which the external wiring is connected is fitted to the protruding portion 8 serving as the positioning function of the metal plate 6 for locking, and is tightly fastened with a screw to fix the inside. Connect and fix the crimp terminal to which the wiring is connected. At this time, since the crimp terminal to which the internal wiring is connected is fixed, the crimp terminal to which the external wiring is connected can be easily fixed and fixed without coming off unlike the conventional case.

[0017]

[Third Embodiment] In order to construct a noise filter for a three-phase power supply shown in the circuit diagram of FIG. 10, as shown in FIG. 9, crimp terminals at both ends of the toroidal coil 15 are relayed by mounting the L-shaped cross-section metal plate. It was connected and fixed to the terminal block with bolts. Next, the condenser 16 is housed in the hollow portion at the bottom of the base and the cross section L
After connecting the capacitor terminals to the lead connection holes of the metal plate by soldering, the metal plate is housed in the pressed lower case 17, and the left and right relay terminal blocks are screwed and fixed from the side surface to the bottom of the coil 15. An epoxy resin was applied and cured to form a noise filter for a three-phase power supply.

[0018]

According to the present invention, it is possible to form an integrated connection type relay terminal block which is thin and can reduce material cost and material cost, and an electric appliance using the same can be mounted on an electric device for external wiring. When connecting, the internal wiring crimp terminal screwed to the relay terminal was temporarily removed, and the complicated work of concentrically overlapping the external wiring crimp terminal and screwing was reduced.

[0019]

[Brief description of drawings]

FIG. 1 is a plan view and a sectional view of a base portion of an example relay terminal block according to the present invention.

FIG. 2 is a plan view and a sectional view of a conventional stand-alone relay terminal block.

FIG. 3 is a plan view and a sectional view of a conventional integrated relay terminal block.

FIG. 4 is a plan view and a sectional view of a metal plate for locking a crimp terminal.

FIG. 5 is a plan view, a side view and a sectional view of a relay terminal according to the present invention.

FIG. 6 is a plan view and a sectional view of a base portion of an example relay terminal block according to the present invention.

FIG. 7 is a plan view and a sectional view of a metal plate for locking a crimp terminal having an L-shaped section.

FIG. 8 is a plan view, a side view, and a sectional view of an example of a relay terminal according to the present invention.

FIG. 9 is a plan view and a cross-sectional view of a noise filter for a three-phase power supply according to a third embodiment.

FIG. 10 is a circuit diagram of a noise filter for a three-phase power supply according to a third embodiment.

[Fig.11] Plan view and cross-sectional view of the metal plate for locking the crimp terminal.

[Explanation of symbols]

1 Base of relay terminal block 2 Side wall of relay terminal block 3 nuts 4 Mounting holes for relay terminal block 5 Metal plate insertion groove 6 Metal plate for crimp terminal locking 7 through holes 8 Positioning protrusion 9 Locking part to groove 10 Crimp terminal 11 Fixing screw 12 Base hollow part 13 Lead insertion hole 14 Cross-section L-shaped metal plate 15 coils 16 capacitors 17 Lower case

Claims (3)

【Specification】 [Claims] 1. Two crimp terminals to which conductors are connected,
In a relay terminal block that is concentrically stacked and screwed and fixed, and that has a plurality of connection parts, the base part of the terminal block has a nut function, and the side wall surface that prevents short circuits rising from the top surface of the base part has An insertion groove of the metal plate for locking, a through hole in the central portion, a positioning function of fitting the crimp terminal to the outer peripheral portion of the through hole, and a locking portion to be fixed in the insertion groove For locking the crimp terminal A relay terminal block comprising a metal plate. 2. A relay terminal block having a plurality of connection parts, in which two crimp terminals to which conductors are connected are concentrically stacked and screwed and fixed, and a hollow part is provided at the bottom of the base part of the terminal block.
A nut function is provided on the upper part thereof, a side wall surface for preventing a short circuit which rises from the upper surface of the base part is formed, an insertion groove of a metal plate for locking the two crimp terminals, a through hole in a central part, and an outer peripheral part of the through hole. A metal plate for locking the crimp terminal, which has a positioning function for fitting to the crimp terminal, and a locking portion for fixing to the insertion groove, and a section L
A fixing plate provided with a through hole in a substantially central portion of one surface bent into a mold, a projection portion to which a crimp terminal is fitted is provided on an outer peripheral portion of the through hole, and a lead wire insertion hole for soldering on the other surface. A relay terminal block characterized by having and. 3. A metal plate for locking two crimp terminals on a hollow part at the bottom of the base of the terminal block, a nut function at the upper part thereof, and a side wall surface for preventing short circuit rising from the upper surface of the base. An insertion groove, a through hole in the central portion, a positioning function of fitting a crimp terminal to the outer peripheral portion of the through hole, and a metal plate for locking a crimp terminal having a locking portion for fixing the insertion groove, A through hole is provided in an approximately central portion of one surface bent in an L shape, a projection portion to which a crimp terminal is fitted is provided on an outer peripheral portion of the through hole, and a lead wire insertion hole for soldering is provided on the other surface. A noise filter comprising a relay terminal block comprising a plate and a capacitor terminal connected to the lead wire insertion hole.