JP3362100B2 - Terminal connection box - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal connection box used for interconnecting terminals provided at the ends of electric wires.

[0002]

2. Description of the Related Art As an example of connecting two electric wires,
There is an example in which an LA terminal (a terminal with a hole) is attached to an end portion of each electric wire, these LA terminals are fitted to bolts erected in a terminal connection box, and nuts are tightened to the bolts to connect them. In this case, the method of temporarily fixing the terminal of one electric wire to the terminal connection box and connecting with the terminal of the other electric wire in the assembly process is often used. This is to facilitate management of intermediate products.

FIG. 2 shows an example of this type of terminal connection box described in Japanese Patent Laid-Open No. 7-160040. In this terminal connection box 1, the first LA terminal 11 is fitted on the outer periphery of the bolt 3 erected on the terminal mounting base 2, and the cylindrical member 4 is screwed onto the bolt 3, so that the first LA terminal 11 is secured. Temporarily stop. In that state, the second LA terminal 12 is fitted onto the outer circumference of the cylindrical member 4, and the nut 5 is screwed onto the outer circumference of the cylindrical member 4, so that the second LA terminal 12 is superposed on the first LA terminal 11. ,
Thereby, both LA terminals 11 and 12 are connected.

[0004]

By the way, in the above-mentioned conventional terminal connection box 1, a cylindrical member 4 other than the nut is used for temporarily fixing the first LA terminal 11. For this reason, the number of parts increases, and as a result, the temporary fixing work becomes troublesome and takes a long working time, and further, problems such as forgetting to assemble the parts occur.

In view of the above circumstances, it is an object of the present invention to provide a terminal connection box that does not increase the number of parts, does not take time, and is capable of simply and securely temporarily fixing the terminals.

[0006]

According to a first aspect of the present invention, a box is provided with a bolt standing upright, a terminal of an electric wire end to be connected is fitted to the bolt, and a nut is tightened. In a terminal connection box for electrically connecting each other, the box body is provided with a first engaging claw that engages with an outer peripheral groove of a corrugated tube fitted to an outer periphery of one of the electric wires to be connected, It is characterized in that a temporary holding piece for temporarily holding the corrugated tube is provided in cooperation with the first engaging claw.

In this terminal connection box, the corrugated tube fitted to the outer periphery of the electric wire can be temporarily held by the first engaging claw and the temporary holding piece, whereby the terminal at the end of the electric wire can be temporarily held. You can Conversely, the terminal connection box can be temporarily held against the end of the electric wire.

A second aspect of the present invention is the terminal connection box according to the first aspect, wherein the box body is composed of a main body and a lid body that form a circular electric wire insertion port when combined with each other. The first engaging claw is formed on the periphery of the arcuate notch forming the wire insertion port of the main body and the lid, and is provided near the main body side engaging claw. The temporary holding piece for temporarily holding the corrugated tube is provided in cooperation with the engaging claw.

In this terminal connection box, the corrugated tube can be temporarily held by the joint action of the first engaging claw and the temporary holding piece even when the lid is open. Usually, in the case of this type of terminal junction box, the corrugated tube is fixed only when the lid and the main body are combined, that is, with the lid closed, but with this terminal junction box, the corrugated tube is opened with the lid open. The tube can be temporarily held.

A third aspect of the present invention is the terminal connection box according to the second aspect, wherein the temporary holding piece is provided so as to project from a position near the engaging claw on the main body side to a position where the corrugated tube is sandwiched. The corrugated tube is configured as an elastic piece, and the corrugated tube is pressed against the engagement claws on the main body side while sandwiching the corrugated tube.

In this terminal connection box, the corrugated tube can be temporarily held only by fitting the corrugated tube between the pair of temporary holding pieces.

A fourth aspect of the present invention is the terminal connection box according to any one of the first to third aspects, wherein the lid body closes the main body when the two are joined together. Each of the half-split lids is hingedly connected to opposite side edges of the main body by a hinge, and each half-split lid has a tubular portion that is substantially orthogonal to the main body when the two are joined together. Is provided with an arcuate notch that forms a circular electric wire insertion port when the two are combined, and the electric wire is provided at the periphery of each arcuate notch. A second engaging claw that engages with the outer peripheral groove of the corrugated tube fitted to the outer periphery of the other of the electric wires is formed.

In this terminal connection box, the insertion port for the other electric wire is provided at the tip of the tubular portion on the lid side orthogonal to the main body.
The two wires can be connected in an orthogonal relationship. Moreover, the corrugated tube of the other electric wire can be fixed by combining the half-split lids.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1A shows a terminal connection box 20 of the embodiment.
And a perspective view showing the configuration of the LA terminals 51 and 52 provided at the ends of the electric wires W to be interconnected in the terminal connection box 20,
(B) is a side sectional view showing an engagement structure of the corrugated tube 55 fitted to the outer periphery of the electric wire W and the Ib portion of FIG.
(B) is a side sectional view showing an engagement structure of the corrugated tube 55 fitted to the outer periphery of the electric wire W and the Ic portion of FIG.

As shown in FIG. 1 (a), the terminal connection box 20 is for connecting the LA terminals 51 and 52 at the ends of the electric wire W having the corrugated tube 55 fitted to the outer periphery thereof to each other. . The corrugated tube 55 is made of a soft resin molded product and has outer peripheral grooves 55a at equal pitches.

The terminal connection box 20 comprises a box body 21 made of a resin integrally molded product, and a stud bolt 60 (hereinafter, simply referred to as a bolt) inserted when the box body 21 is molded. The box body 20 has an end wall 24 when the two are put together.
It is composed of a main body 22 and a lid 23 which form a circular first electric wire insertion port 31. The lid 23 is a pair of half-split lids 23A, 23A that close the upper surface of the main body 22 when the two are put together.
It consists of B. The respective half-split lids 23A and 23B are openably and closably connected to the opposite side edges of the main body 22 by a hinge 25, and the half-split lids 23A and 23B are locked together to lock the half-lid lids 23A and 23B together. 28 and a lock protrusion 29 are provided. In addition, the half-split lids 23A and 23B are provided with half-split tube portions 26A and 26B that form a tube portion 26 that is substantially orthogonal to the main body 22 when the both are combined.

A terminal mount 22a is provided on the inner surface of the main body 22, and a bolt 60 is erected upward on the upper surface of the terminal mount 22a. This bolt 60 is used for the LA terminal 5
This is for electrically connecting both LA terminals 51 and 52 by fitting nuts 1 and 52 and tightening a nut (not shown).

A first engaging claw 32 that engages with the outer peripheral groove 55a of the corrugated tube 55 of one electric wire W to be connected is provided at one end of the box body 21. A temporary holding piece 34 that temporarily holds the corrugated tube 55 in cooperation with the first engaging claw 32 is provided in the vicinity. The first engaging claw 32 is formed on the peripheral edges of the arcuate cutouts 31 a and 31 b of the main body 22 and the lid 23 that form the first electric wire insertion port 31. The temporary holding piece 34 is formed in the vicinity of the first engaging claw 32 formed in the arcuate notch 31a on the main body 22 side, and as shown in FIG.
The corrugated tube 55 can be temporarily held in cooperation with the engaging claw 32.

The temporary holding piece 34 is formed as a pair of elastic pieces protruding from the vicinity of the first engaging claw 32 on the main body 22 side to a position where the corrugated tube 55 is sandwiched, and sandwiches the corrugated tube 55. In this state, the corrugated tube 55 can be pressed against the first engagement claw 32 on the main body 22 side.

Further, on the tip wall 27 of the half-split cylinder portions 26A, 26B on the other end side, arcuate notches 35a which form a circular electric wire insertion port 35 when both are combined are formed respectively, and each arcuate shape is formed. As shown in FIG. 1C, a second engaging claw 36 that engages with the outer peripheral groove 55a of the corrugated tube 55 fitted to the outer periphery of the other electric wire W is formed on the peripheral edge of the cutout portion 35a. .

Next, the operation will be described.

When the terminal 51 of the one electric wire W is temporarily fixed to the terminal connection box 20, the terminal 51 of the one electric wire W is fitted to the bolt 60 with the lid 23 opened. at the same time,
The corrugated tube 55 fitted on the outer circumference of the electric wire W is fitted between the pair of temporary holding pieces 34 provided on the main body 22. Then, the first engagement claw 32 is bitten into the outer peripheral groove 55a of the corrugated tube 55, and at the same time, the elasticity of the temporary holding piece 34 presses the corrugated tube 55 against the first engagement claw 32, whereby the first engagement claw 32 is pressed. By the joint action of the engaging claw 32 and the temporary holding piece 34, the corrugated tube 55 is reliably temporarily held, and the terminal 51 at the end of the wire is temporarily held.

Therefore, the electric wire W and the terminal connection box 20 can be integrally conveyed with the lid 23 completely opened.
It can be carried to the connection process with the other wire. Then, in the next connection step, the terminal connection box 20 in which the lid 23 is simply opened
, The terminal 52 of the electric wire W on the other side is connected to the lid 2
3 should be closed.

That is, the mating terminal 52 is fitted into the bolt 60, and the terminal 51 previously fitted is superposed, and in that state, a nut (not shown) is screwed into the bolt 60 and tightened. Thus, the terminals 51 and 52 are fastened in a superposed state. Next, the half-split lids 23A and 23B are closed and locked by the lock frame 28 and the lock protrusions 29, so that the second engaging claws 3 as shown in FIG.
6 is bited into the outer peripheral groove 55a of the corrugated tube 55. Thereby, the corrugated tube 55 of the electric wire W on the other side is securely fixed. At the same time, by closing the lid 23, the first engaging claw 32 on the lid 23 side bites into the outer peripheral groove 55a of the corrugated tube 55 of the one electric wire W, as shown in FIG. Corrugated tube 55
Is also securely fixed.

As described above, the two electric wires W are connected to the terminal connection box 2
Connected by 0. In this case, since only the temporary holding piece 34 is formed in the box body 22 so as to face the first engaging claw 32 that engages with the corrugated tube 55, extra parts such as a conventional cylindrical member are added. Therefore, it is possible to shorten the time for temporary holding work, simplify the work, and avoid forgetting to assemble the parts. In addition,
Since the insertion port 35 of the other electric wire W is provided at the tip of the tubular portion 26 on the lid 23 side orthogonal to the main body 22, the two electric wires W can be connected in an orthogonal relationship.

[0027]

As described above, according to the first aspect of the invention, the terminal provided at the end of the wire is connected to the terminal by temporarily holding the corrugated tube by the first engaging claw and the temporary holding piece. It can be temporarily held in a box. In this case, since only the temporary holding piece that faces the first engaging claw is formed on the box body, it is possible to reduce the time for temporary holding work and to simplify the work without adding extra parts. It is possible to avoid forgetting to assemble the parts.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, the following effect is exhibited. That is, even when the lid is opened, the corrugated tube can be temporarily held by the joint action of the first engagement claw and the temporary holding piece. Therefore, the electric wire and the terminal connection box can be conveyed together with the lid completely opened, and in the connection process with the mating wire, the terminal connection box can be simply connected to the terminal connection box with the lid open. All you have to do is reduce the work.

According to the invention of claim 3, in addition to the effect of the invention of claim 2, the following effect is exhibited. That is, the corrugated tube can be easily temporarily held in the terminal connection box only by fitting the corrugated tube between the pair of temporary holding pieces, and the workability at the time of temporary holding is improved.

According to the invention of claim 4, in addition to the effect of the invention of any one of claims 1 to 3, the following effect is exhibited. That is, it is possible to connect two electric wires in an orthogonal relationship,
The corrugated tube of each electric wire can be securely fixed.

[Brief description of drawings]

1A and 1B are explanatory views of an embodiment of the present invention, in which FIG. 1A is a perspective view showing a configuration of a terminal connection box and terminals of the embodiment, and FIG. 1B is a holding state of a corrugated tube in an Ib portion of FIG. FIG. 3C is a partial side sectional view showing the state of holding the corrugated tube in the Ic portion of FIG.

FIG. 2 is a sectional view showing a structure of a conventional terminal connection box.

[Explanation of symbols]

20 terminal junction box 21 Box 22 body 23A, 23B Half split lid 26A, 26B Half split cylinder part 31 Wire insertion port 31a, 31b Arc-shaped notch 32 First engaging claw 34 Temporary holding piece 35 Electric wire insertion port 35a arcuate notch 36 Second engagement claw 51, 52 LA terminals 55 corrugated tube 55a peripheral groove 60 volts W electric wire

─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-7-106040 (JP, A) JP-A-9-23530 (JP, A) JP-A-58-163884 (JP, A) 111222 (JP, U) Actual opening 2-37517 (JP, U) Actual opening 1-96724 (JP, U) Actual opening 4-124821 (JP, U) Actual opening 61-158077 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H01R 4/38 H01R 11/12 H01R 11/32 H02G 3/08 H02G 3/16 B60R 16/02

Claims (4)

(57) [Claims] 1. A terminal connection box in which bolts are erected on a box body, terminals of electric wires to be connected are fitted to the bolts, and nuts are tightened to electrically connect the terminals to each other. The box body is provided with a first engaging claw that engages with an outer peripheral groove of a corrugated tube fitted to the outer periphery of one of the electric wires to be connected, and cooperates with the first engaging claw. A terminal connection box provided with a temporary holding piece for temporarily holding a corrugated tube. 2. The terminal connection box according to claim 1, wherein the box body includes a main body that forms a circular electric wire insertion opening when combined and a lid body, and the main body is provided with the bolt. At the same time, the first engaging claw is formed on the periphery of the arcuate notch forming the wire insertion port of the main body and the lid, and the main body side engaging claw is formed in the vicinity of the main body side engaging claw. A terminal connection box, characterized in that the temporary holding piece capable of holding a corrugated tube together is provided. 3. The terminal connection box according to claim 2, wherein the temporary holding piece is configured as a pair of elastic pieces protruding from the vicinity of the engaging claw on the main body side to a position where the corrugated tube is sandwiched. A terminal connection box, wherein the corrugated tube is pressed against the engagement claws on the main body side with the corrugated tube sandwiched therebetween. 4. The terminal connection box according to claim 1, wherein the lid body comprises a pair of half-lid lids that close the main body when the two are put together. A split lid is connected to opposite side edges of the main body by a hinge so as to be openable and closable, and each half split lid forms a tubular portion that is substantially orthogonal to the main body when the two are put together. Is provided, an arcuate notch is formed at the tip of the half-cylindrical part to form a circular electric wire insertion port when the two are combined, and the other of the electric wires is formed at the periphery of each arcuate notch. A terminal connection box characterized in that a second engaging claw that engages with an outer peripheral groove of a corrugated tube fitted to the outer periphery of an electric wire is formed.