JPS5833658Y2 - Center feed-in joiner for wiring ducts - Google Patents

Description

[Detailed description of the invention] This invention relates to a center feed-in joiner for wiring ducts.

A conventional center feed-in joiner is shown in FIGS. 1 and 7.

That is, this center feed-in joiner has a terminal block 2 equipped with external connection terminals 1, 1 for connecting power lines, and a connection end 4a that fits into the end of a wiring duct, and is arranged inside the wiring duct. A pair of feed-in blocks 4, 4 equipped with pressure contact terminals 3 to be pressure contact connected to the conductor to be installed.
Based on 5. Above the pair of feed-in blocks 4
．． 4 sandwich the terminal block 2 and are arranged in tandem so that the pressure contact terminals 3 and external connection terminals 1 are connected, and a cover 6 is placed on the top surface of the terminal block 2. The external connection terminal 1 has a pair of terminal screws 7, 7 on its top surface.
are screwed together.

However, this center feed-in joiner
Since the pair of terminal screws 7, 7 constituting the external connection terminal 1.1 are arranged on the top surface of the terminal block 2, the width of the terminal block 2 is limited by the pair of terminal screws 7. , 7 cannot be arranged side by side in the width direction, and the first
As shown in the figure, a pair of terminal screws 7, 7 are arranged diagonally.

As a result, the length of the center feed-in joiner becomes longer due to the diagonal arrangement, which not only increases the overall size and the number of required members, but also increases the part of the joiner that occupies the area where the wiring duct is installed. This has disadvantages such as increasing the size of the wiring duct, increasing the length of the wiring duct, and making installation difficult.

As a center feed-in joiner that eliminates these drawbacks, it is possible to consider a center feed-in joiner having the configuration shown in FIGS. 2 to 4.

That is, this center feed-in joiner has a pair of terminal mounting parts 10 and 10 on both sides of the central part for mounting the external connection terminal parts 9 of the terminal member 8 shown in FIG. 3, and the ends thereof are shown in FIG. Wiring duct)-D is protruded so as to be approximately equal to the width dimension (shorter by the thickness of the terminal cover 11) to form the main body block 12, and the wiring duct) 4) is provided at both ends as shown in Fig. 3. Pressure contact terminal portion 13.1 that presses into conductor F
A pair of external connection terminal parts 9 are formed by inserting a terminal screw 14 into a vertical piece part 9a bent outward from the lower end of the central part and screwing it into a wire crimping piece 15 on the inside part. Terminal members 8, 8 are arranged in parallel in a pair of vertical grooves 16, 16 formed on the upper surface of the main body block 12 so that the external connection terminal parts 9 are attached to the terminal mounting part 10, and this main body block 12 A main body cover 18 having a central upper surface and a horizontal protruding portion 17 that can cover the upper surface of the terminal mounting portion 10.
and the pair of terminal mounting portions 10.10.
The side and bottom surfaces of the terminal cover 11 are covered with a U-shaped terminal cover 11.

The terminal mounting portion 10 has a pair of protrusions 10a, 10a.
These pair of projecting pieces 10a are constructed by arranging them vertically in parallel.

10a, a vertical piece 9a constituting the external connection terminal portion 9 is clamped and fixed.

On both side surfaces of the main block 12 where the terminal mounting portion 10 is not formed, there are engagement protrusions 19, 19 that fit into the engagement grooves G, G formed on the inner surface of the wiring duct (D) shown in FIG. is installed horizontally.

The vertical groove 16 of the terminal member mounting portion formed on the upper surface of the main body block 12 has a clearance at both ends thereof, so that the pressure contact terminal portion 13 of the terminal member 8 can be elastically deformed in the lateral direction.

A reinforcing metal base 20 is stretched on the upper surface of the main body cover 18, and a horizontally extending portion 17 facing the terminal mounting portion 10 is provided.
is provided with a wire insertion hole 21.21 for guiding a power supply line from the outside to the external connection terminal portion 9, and a wire insertion hole 22.22 formed at both ends of the main body cover 18 is inserted through both ends of the main body block 12. Insert the screws 24 and 24 through L 23 and 23 and tighten and fix them, and also insert the screw holes 26 formed in the center of the main body cover 18 into the screw holes 25 in the center of the main body block 12. Insert the screw through the hole and tighten to secure.

As shown in FIG. 4, the terminal cover 11 is secured by screws 29 inserted into threaded holes 28 formed in the lower surface of the main body block 12 through screw insertion holes 27 formed in the center thereof.

This center feed-in joiner has its engagement protrusion 19 at the open end of each of the two wiring ducts )D and D whose both ends are to be connected, and the engagement protrusion 19 engages in the engagement groove G of the wiring duct )-D. Fit them together as shown in FIG. 5 and connect them as shown in FIG.

In this way, since the terminal screws 14 of the external connection terminal section 9 for connecting the power supply line from the outside are arranged on both sides of the main body block 12, the space occupied by the external connection terminal section 9 in the entire center feed-in joiner is small. As a result, the shape of the center feed-in joiner can be made smaller, which not only reduces the number of required parts and costs, but also reduces the part of the joiner that occupies the wiring duct installation area. This reduces the length of the wiring duct and makes installation easier.

In addition, since the pressure contact terminal section 13 and the external connection terminal section 9 are integrally formed by one terminal member 8 and attached to one main body block 12, the terminal block block equipped with the external connection terminal and the block mounted with the pressure contact terminal are different. Compared to the conventional center feed-in joiner constructed by combining the above, the number of parts is reduced, and the assembly is not only easy, but also the external dimensions can be reduced even more easily.

However, in this center feed-in joiner, as shown in FIGS. 2 and 4, the terminal cover 11 that covers the side ends of the terminal mounting section 10 on which the external connection terminal section 9 is mounted is simply extended outward. Since the structure is such that the terminal mounting portion 10 is simply brought into contact with the end faces of the pair of protrusions 10a, 10a, this external connection terminal portion 9 generates heat when energized, and is usually molded with resin as an insulating material. The terminal mounting portion 10 of the main body block 12 is heated and plastically deformed, creating a gap in the terminal mounting portion 10, which may cause an electric shock accident, which poses a problem from a safety standpoint.

Therefore, the purpose of this invention is to provide the above-mentioned method in which the terminal screws of the external connection terminal section for connecting the power supply line are provided on both sides of the central part of the main body block, and when the material is made of thermoplastic resin, etc. To provide a center feed-in joiner for a wiring duct which is highly safe and does not cause a gap in a terminal mounting part to which an external connection terminal part is mounted due to plastic deformation of a terminal cover, thereby preventing an electric shock accident.

An embodiment of this invention is shown in FIG.

That is, in the center feed-in joiner of this wiring duct shown in FIGS. 2 to 4, the pair of protrusions 10a constituting the terminal attachment part 10 to which the external connection terminal part 9 is attached are used. ,1
Fitting longitudinal grooves 10b and 10b are provided vertically on the inner surface of the mutually opposing side ends of the terminal cover 11, respectively, and the fitting longitudinal grooves 10b are provided on both sides of both ends of the U-shaped terminal cover 11.
, 10b, the fitting claws 11a, 1 can be removably inserted into the parts 11a, 10b.
1a, and by fitting the fitting claw parts 11a, 11a into the fitting vertical grooves 10b, 10b, the terminal mounting part 1
The side end of the terminal cover 11 is covered with the side end of the terminal cover 11.

The rest of the structure is similar to the center feed-in joiner shown in FIGS. 2 to 4 described above.

With this configuration, even if the external connection terminal section 9 heats up due to energization and the terminal mounting section 10 to which the external connection terminal section 9 is attached and the terminal cover 11 that covers it undergo some plastic deformation. , due to its fitting structure, the terminal mounting portion 10
A center feed-in joiner with high safety can be obtained since no gaps are created between the two, preventing the occurrence of electric shock accidents.

As described above, the center feed-in joiner for wiring ducts of this invention has an external connection terminal section for connecting the feeder line with terminal screws on the outside surface formed on both sides of the center part, and a terminal section on both sides of the center section for connecting the wiring duct to the conductor of the wiring duct. A pair of terminal members forming pressure contact terminals to be connected by pressure contact, a main body block with the pair of terminal members arranged side by side on the upper surface, and a pair of projecting pieces arranged side by side on both sides of the central part of the main body block. A pair of formed terminal mounting portions for mounting the external connection terminal portion, a vertical fitting groove provided vertically on the inner surface of the mutually opposing side ends of the pair of projecting pieces, and a main body covered on the upper surface of the main body block. a cover, a U-shaped terminal cover stretched over the back surface of the main body block and covering the side ends of the terminal mounting portion at both ends; Since it is equipped with a mating pawl that fits into the groove, even if some plastic deformation occurs due to heating due to the tight fitting of the terminal cover to the terminal mounting part, the terminal mounting part will remain intact. This has the effect that no gaps are created and electric shock accidents can be avoided.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing a conventional example, Fig. 2 is an exploded perspective view showing a precedent example of this invention, Fig. 3 is a perspective view of its terminal member, and Fig. 4 is an exploded perspective view seen from the back side. , FIG. 5 is a perspective view showing the connection state thereof, FIG. 6 is an exploded perspective view showing an embodiment of this invention, and FIG. 7 is a side view showing a conventional example. 8...Terminal member, 9...External connection terminal section, 10...Terminal mounting section, 10a...
・Protrusion piece, 10b... Fitting vertical groove, 11...
・Terminal cover, 11 a... Fitting claw part, 12.
...Body block, 13...Impression terminal part, 14...Terminal screw, 15...Wire crimp piece, 17...Side protrusion part , 18...
・Body cover, 19...Engagement protrusion, 20...
...Metal base, 21...Wire insertion hole.

Claims (1)

[Scope of utility model registration request] A pair of terminal members, each having an external connection terminal part for connecting a power supply line provided with a terminal screw on the outer surface, formed on both sides of the center part, and a pressure-contact terminal part formed at both ends to be pressure-connected to the conductor of the wiring duct; a main body block in which a pair of terminal members are arranged side by side on the upper surface; a pair of terminal mounting parts for mounting the external connection terminal part formed by forming a pair of protrusions in parallel on both sides of the central part of the main body block; A fitting vertical groove provided vertically on the inner surface of the opposing side ends of the pair of protrusions, a main body cover covering the upper surface of the main body block, and a fitting groove extending over the back surface of the main body block at both ends thereof. A center feed for a wiring duct comprising a U-shaped terminal cover that covers a side end of a mounting part, and fitting claw parts formed on both sides of the end of this terminal cover and fitting into fitting vertical grooves of the protruding piece. Injoiner.