JP5433578B2 - Aluminum wire connection terminal and wire connection terminal unit - Google Patents

Description

  The present invention includes an aluminum wire connection terminal that is attached to an aluminum core wire end portion of an aluminum wire and is inserted into and connected to a wire connection sleeve attached to the core wire end portion of the resin-coated wire, and the aluminum wire connection terminal and the wire connection sleeve. The present invention relates to a wire connection terminal unit.

  In a transformer or choke coil in which the lead wire is a vinyl electric wire (resin-coated electric wire), the connection between a magnet wire whose core wire is copper and a vinyl electric wire whose core wire is tin-plated annealed copper stranded wire is described in Patent Document 1, for example. A cylindrical butting sleeve (wire connection sleeve) is used. In this connection method, the vinyl coating at the end of the vinyl wire is removed, and the exposed core wire of the tinned annealed copper stranded wire is inserted into the inside from the insertion port on one end side of the butting sleeve, and the one end side of the sleeve is pushed. Crush and crimp. In the same manner, the insulating wire of the end of the magnet wire is removed, and the exposed copper core wire is inserted into the inside through the insertion port on the other end side of the butting sleeve, and the other end side of the sleeve is crushed and crimped. Thereby, a magnet wire and a vinyl electric wire can be connected electrically and mechanically.

Japanese Utility Model Publication No. 62-40349

  Due to the recent rise in copper cost, the core wire of the magnet wire may be changed from copper to aluminum in order to reduce the cost. However, in the case of a magnet wire (aluminum wire) with an aluminum core wire, the exposed aluminum is immediately oxidized and a strong oxide film is formed when the insulating coating at the end is removed. Electrical connection becomes difficult. In order to enable this electrical connection, the crimping portion with the butting sleeve may be immersed in a solder bath and soldered.

  However, if the magnet wire and the vinyl electric wire are crimped to the butting sleeve and then immersed in the solder bath, the vinyl coating of the vinyl electric wire dissolves, so that the core wire of the vinyl electric wire is exposed and causes a short circuit. To solve this problem, only the magnet wire is crimped to the other end of the butting sleeve and then immersed in a solder bath and soldered. However, the vinyl wire is inserted into one end of the butting sleeve. Solder may wrap around and adhere, making it difficult to insert the vinyl wire into the insertion port. In order to eliminate this point, it is sufficient to make a design change that suppresses heat conduction between the crimping portions by increasing the size of the butting sleeve, but the cost increases.

  On the other hand, since aluminum is softer than copper, when the aluminum core wire is inserted into the inside from the insertion port on one end side of the butting sleeve and the one end side of the sleeve is crushed and crimped, the aluminum core wire is not The magnet wire may be sheared, and the magnet wire may be torn off from the butting sleeve during operation.

  An object of the present invention is to provide a small-sized aluminum electric wire connecting terminal capable of connecting an aluminum electric wire to a electric wire connecting sleeve to which a resin-coated electric wire is connected, and an electric wire connection including the aluminum electric wire connecting terminal and the electric wire connecting sleeve. To provide a terminal unit.

  The present inventor has disclosed a small-sized aluminum electric wire connecting terminal that can easily prevent the aluminum electric wire connected to the sleeve from being torn off and the aluminum electric electric wire connecting sleeve to which the resin-coated electric wire is connected, and the aluminum electric wire connecting sleeve. The present inventors have found a wire connection terminal unit including a wire connection terminal and a wire connection sleeve.

That is, in order to achieve the above object, the present invention is an aluminum wire connection terminal that is attached to an end portion of an aluminum core wire of an aluminum wire and is inserted into a wire connection sleeve attached to the end portion of a core wire of a resin-coated wire. the cover the circumferential surface of the aluminum core wire end, comprising a covering portion which is the peripheral surface brazing, are integrally formed with the cover portion, and a plug portion to be inserted into the wire connection sleeve, the coating The portion is formed in a comb-like shape that exposes a part of the peripheral surface when covering the peripheral surface of the end portion of the aluminum core wire, and is soldered to the peripheral surface of the end portion of the aluminum core wire. The wire core is inserted into the wire connection sleeve and crimped, and the tip of the end portion of the aluminum core wire is formed to be insertable .

  According to such a configuration, only the end portion of the aluminum core wire of the aluminum electric wire is covered with the covering portion of the aluminum electric wire connection terminal and electrically and mechanically connected by brazing, and then the insertion portion of the aluminum electric wire connection terminal is connected to the male portion. As described above, the insertion port of the wire connection sleeve attached to the end portion of the core wire of the resin-coated wire can be inserted and crimped as a female. For this reason, the end portion of the aluminum core wire is covered with the covering portion and is only crimped to such an extent that it does not fall off, so that it is not crushed and torn off. Further, the resin-coated electric wire is not damaged during brazing. Further, such a solder does not become an obstacle when the aluminum wire connection terminal is inserted into the wire connection sleeve, and can be used as a small aluminum wire connection terminal.

  Further, since the covering portion is formed in a comb-teeth shape that exposes a part of the peripheral surface when the peripheral surface of the end portion of the aluminum core wire is covered, the covering with the wax is compared with the case where the entire peripheral surface is covered. A large coupling area with the part can be obtained, and the aluminum wire connecting terminal and the aluminum wire can be firmly connected.

  Moreover, since the said coating | coated part is soldered with the surrounding surface of the said aluminum core wire edge part, the surrounding surface of a coating | coated part and the aluminum core wire edge part only by immersing the aluminum electric wire connection terminal in the state which attached the aluminum electric wire in a solder tank Can be easily connected.

  Moreover, since the said insertion part was inserted and crimped | bonded to the said electric wire connection sleeve, an aluminum electric wire and a resin-coated electric wire can be firmly connected, without damaging an aluminum core wire edge part.

  In addition, since the insertion portion is formed so that the tip of the end portion of the aluminum core wire can be inserted, the electrical connection between the aluminum electric wire and the aluminum electric wire connection terminal can be ensured and the mechanical connection is strong. Can be.

In order to achieve the above object, the present invention is an electric wire connecting terminal unit for connecting an aluminum electric wire and a resin-coated electric wire, wherein an end portion of the core wire of the resin-coated electric wire is inserted and connected, and Covering the peripheral surface of the end portion of the aluminum core wire of the aluminum electric wire, a covering portion to be brazed to the peripheral surface, and an insertion portion that is integrally formed with the covering portion and is inserted into and connected to the wire connection sleeve An aluminum wire connection terminal having the aluminum wire connection terminal, the covering portion of the aluminum wire connection terminal is formed in a comb-like shape exposing a part of the peripheral surface when covering the peripheral surface of the aluminum core wire end, Soldered to the peripheral surface of the aluminum core wire end, the insertion portion of the aluminum wire connection terminal is inserted into the wire connection sleeve and crimped, and the tip of the aluminum core wire end is formed to be insertable. And said that you are.

  According to such a configuration, it is possible to easily connect an electric wire having a core wire made of a different material, for example, steel and an aluminum electric wire as well as exhibiting the effects described above.

  According to the present invention, only the end portion of the aluminum core wire of the aluminum electric wire is electrically and mechanically connected to the covering portion of the aluminum electric wire connecting terminal by brazing. For this reason, the resin-coated electric wire is not damaged during brazing. And the insertion part of the wire connection sleeve attached to the core wire end part of the resin-coated electric wire is inserted and connected as a female with the insertion part of the aluminum electric wire connection terminal as a male. For this reason, the wax does not become an obstacle when inserting the aluminum wire connection terminal into the wire connection sleeve. In addition, since it is not necessary to make a large size by making a design change that suppresses heat conduction between the crimping portions of the butting sleeve as in the prior art, it can be used as a small aluminum wire connection terminal. Furthermore, the covering portion of the aluminum electric wire connecting terminal covers the peripheral surface of the end portion of the aluminum core wire, and is only crimped to such an extent that it does not fall off, and is not crushed. For this reason, tearing of the aluminum electric wire from the covering portion can be prevented.

(A), (B), (C), (D) is a top view, a front view, a left side view, and a right side view showing an aluminum electric wire connecting terminal to which an embodiment of the present invention is applied. It is a top view which shows the electric wire connection sleeve to which the aluminum electric wire connection terminal of FIG. 1 is connected. FIG. 3 is a first diagram illustrating a connection method using the aluminum wire connection terminal illustrated in FIG. 1 and the butting sleeve illustrated in FIG. 2. It is the 2nd figure which shows the connection method by the aluminum electric wire connection terminal shown in FIG. 1, and the butt sleeve shown in FIG. FIG. 4 is a third view illustrating a connection method using the aluminum electric wire connection terminal illustrated in FIG. 1 and the butting sleeve illustrated in FIG. 2. FIG. 6 is a fourth diagram illustrating a connection method using the aluminum wire connection terminal illustrated in FIG. 1 and the butting sleeve illustrated in FIG. 2. FIG. 10 is a fifth diagram illustrating a connection method using the aluminum electric wire connection terminal illustrated in FIG. 1 and the butting sleeve illustrated in FIG. 2.

  An aluminum electric wire connecting terminal according to an embodiment of the present invention will be described in detail with reference to the drawings. 1A, 1B, 1C, and 1D are a plan view, a front view, a left side view, a right side view, and FIG. 2 showing an aluminum wire connecting terminal to which an embodiment of the present invention is applied. These are top views which show the electric wire connection sleeve to which the aluminum electric wire connection terminal of FIG. 1 is connected.

  The aluminum wire connection terminal 10 shown in FIG. 1 is attached to the end portion of the aluminum core wire of the aluminum wire, and is inserted into the butting sleeve (wire connection sleeve) 20 attached to the end portion of the vinyl wire (resin-coated wire). It is a connection terminal. The aluminum electric wire connecting terminal 10 includes a covering portion 11 and an insertion portion 12, and is manufactured by integrally forming a sheet metal made of, for example, tin-plated brass by punching into a predetermined shape and bending it.

  The covering portion 11 has a semi-hollow cylindrical portion 11a and a comb-like portion 11b extending from both sides of the semi-hollow cylindrical portion 11a, and the comb-like portion 11b is bent to form a semi-hollow cylinder. It covers the peripheral surface of the end portion of the aluminum core wire together with the shaped portion 11a and is crimped to such an extent that it does not fall off. And although mentioned later for details, the coating | coated part 11 is electrically and mechanically connected with the aluminum core wire edge part by brazing. The insertion portion 12 is integrally formed in a hollow cylindrical shape on one end side of the covering portion 11. The diameter of the insertion part 12 is formed smaller than the diameter of the insertion port 22 of the butting sleeve 20 shown in FIG.

  The butting sleeve 20 shown in FIG. 2 is a known tube-shaped member, and is attached with one end of the vinyl wire inserted into one insertion port 21 and attached to the other insertion port 22 with an aluminum electric wire. It is the connection sleeve which the insertion part 12 of the aluminum electric wire connection terminal 10 attached to the aluminum core wire edge part is inserted and attached. The butting sleeve 20 is produced by, for example, cutting a tube made of brass into a predetermined length and tin-plating a wire stopper 23 at the center of the peripheral surface.

  The aluminum wire connection terminal 10 and the butting sleeve 20 as described above can be configured as a wire connection terminal unit that connects the aluminum wire and the vinyl wire, and the connection method will be described below with reference to the drawings. Note that the insulation coating at the end of the aluminum core wire of the aluminum electric wire and the insulation coating at the end of the core wire of the vinyl electric wire are removed in advance.

  First, as shown in FIG. 3, the aluminum core wire end portion 31 of the aluminum wire 30 is inserted into the semi-hollow cylindrical portion 11 a of the covering portion 11 of the aluminum wire connection terminal 10, and the comb-like portion 11 b is connected to the aluminum core wire end portion 31. Bend along the circumference. Thereby, the peripheral surface of the aluminum core wire end portion 31 is covered with the semi-hollow cylindrical portion 11a and the comb-like portion 11b and exposed from the gap between the comb-like portions 11b. At this time, the peripheral surface of the aluminum core wire end portion 31 is covered to such an extent that it contacts the semi-hollow cylindrical portion 11a and the comb-like portion 11b, and is only crimped to such an extent that it does not fall off. Therefore, the aluminum wire 30 is not torn off from the aluminum wire connection terminal 10.

  Subsequently, as shown in FIG. 4, the aluminum wire connection terminal 10 to which the aluminum wire 30 is attached is immersed in a solder bath 51 in which the solder 50 is melted, and the aluminum wire connection terminal 10 is soldered after a predetermined time has elapsed. Remove from tank 51. At this time, since the vinyl electric wire 40 is not connected to the aluminum electric wire connecting terminal 10, the vinyl coating is not dissolved. Moreover, since the aluminum electric wire 30 and the aluminum electric wire connecting terminal 10 can be immersed and taken out in a linear state, this operation can be easily performed. Thereby, the peripheral surface of the aluminum core wire end portion 31 is soldered to the semi-hollow cylindrical portion 11 a and the comb-like portion 11 b of the covering portion 11. In particular, the peripheral surface portion of the peripheral surface of the aluminum core wire end 31 that is exposed from the gap between the comb-shaped portions 11b is soldered to the semi-hollow cylindrical portion 11a and the comb-shaped portions 11b of the covering portion 11. .

  On the other hand, as shown in FIG. 5, the core wire end portion 41 of the vinyl electric wire 40 is inserted from one insertion port 21 of the butting sleeve 20 until it hits the wire stopper 23, and the insertion side end portion 24 is caulked. As a result, the core wire end portion 41 is crimped to the butting sleeve 20.

  Next, as shown in FIG. 6, the other insertion port of the butting sleeve 20 to which the insertion portion 12 of the aluminum wire connection terminal 10 to which the aluminum wire 30 is attached and the core end portion 41 of the vinyl wire 40 is attached. 22 is inserted, and the insertion part 12 is inserted until it contacts the wire stopper 23 from the insertion port 22. At this time, solder may be attached to the insertion portion 12 of the aluminum electric wire connection terminal 10, but the insertion port 22 of the butting sleeve 20 is formed with a larger diameter than the insertion portion 12, so that The insertion part 12 can be smoothly inserted into the insertion port 22. Finally, the insertion side end 25 is caulked. Thereby, the aluminum electric wire connecting terminal 10 is crimped to the butting sleeve 20. As described above, as shown in FIG. 7, the aluminum wire 30 and the vinyl wire 40 can be electrically and mechanically connected via the aluminum wire connection terminal 10 and the butting sleeve 20.

  As described above, according to the aluminum wire connection terminal 10 of the present embodiment, only the aluminum core wire end portion 31 of the aluminum wire 30 is covered with the covering portion 11 of the aluminum wire connection terminal 10 and electrically and mechanically connected by the solder 50. Thereafter, the insertion portion 12 of the aluminum wire connection terminal 10 is used as a male, and the insertion port 22 of the butting sleeve 20 attached to the core wire end portion 41 of the vinyl electric wire 40 is inserted and connected as a female. For this reason, since the aluminum core wire end part 31 is covered with the covering part 11 and is only crimped to such an extent that it does not fall off, it is not crushed and torn off. Further, the vinyl electric wire 40 is not damaged during soldering. Further, the solder 50 does not become an obstacle when the aluminum wire connecting terminal 10 is inserted into the butting sleeve 20, and can be used as a small aluminum wire connecting terminal 10.

  Further, since the covering portion 11 is formed in a comb-like shape that exposes a part of the peripheral surface when the peripheral surface of the aluminum core wire end portion 31 is covered, soldering is performed compared to the case where the entire peripheral surface is covered. The coupling area between the covering portion 11 and the peripheral surface of the aluminum core wire end portion 31 can be increased, and the aluminum wire connection terminal 10 and the aluminum wire 30 can be firmly connected.

  Moreover, since the coating | coated part 11 is soldered with the surrounding surface of the aluminum core wire edge part 31, only the aluminum wire connection terminal 10 in the state which attached the aluminum electric wire 30 is immersed in the solder tank 51, and the coating | coated part 11 and the aluminum core wire edge | end The peripheral surface of the part 31 can be easily connected.

  In addition, since the insertion portion 12 is inserted into the insertion port 22 of the butting sleeve 20 and crimped, the aluminum wire 30 and the vinyl wire 40 are firmly connected without damaging the aluminum core end portion 31. be able to.

  Moreover, since the aluminum wire connection terminal 10 and the butting sleeve 20 are configured as a wire connection terminal unit, not only the aluminum core wire end 31 of the aluminum wire 30 and the core wire end 41 of the vinyl wire 40 are connected, but also the aluminum wire It becomes possible to easily connect the 30 aluminum core wire end portions 31 and the electric wire having the core wire made of a different material.

  In the above-described embodiment, the tip of the aluminum core wire end portion 31 is configured to be inserted into the covering portion 11. However, the inner diameter of the insertion portion 12 is made larger than the outer diameter of the aluminum core wire end portion 31, or the aluminum core wire end portion is By making the outer diameter of the portion 31 smaller than the inner diameter of the insertion portion 12, the tip of the aluminum core wire end portion 31 can be inserted into the insertion portion 12, so that the electrical connection between the aluminum wire 30 and the aluminum wire connection terminal 10 is achieved. The connection can be made reliable and the mechanical connection can be made strong. Moreover, although the comb-shaped part 11b was formed in the coating | coated part 11, the same effect can be acquired even if it forms a coating | coated part in a cylindrical shape. Further, solder is used as the brazing, but another brazing material may be used.

  While the present invention has been described based on the embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the claims.

  The present invention is not limited to a transformer or choke coil in which the lead wire is made of a vinyl electric wire, and is not limited to a case where a magnet wire whose core wire is aluminum and a vinyl wire whose core wire is tin-plated annealed copper stranded wire are connected. It can be widely applied to other electronic components.

10 aluminum wire connection terminal, 11 covering portion, 11a semi-hollow cylindrical portion, 11b comb-like portion, 12 insertion portion,
20 butt sleeve, 21, 22 outlet, 23 wire stopper, 24, 25 insertion side end, 30 aluminum wire,
31 Aluminum core wire end, 40 Vinyl electric wire, 41 Core wire end, 50 Solder, 51 Solder bath

Claims (2)

An aluminum wire connection terminal that is attached to an aluminum core wire end of an aluminum wire and is connected to a wire connection sleeve attached to the core wire end of a resin-coated wire, covering the peripheral surface of the aluminum core wire end, A covering portion to be brazed to the peripheral surface, and a plug portion that is integrally formed with the covering portion and is inserted into the wire connection sleeve ,
The covering portion is formed in a comb-like shape that exposes a part of the peripheral surface when covering the peripheral surface of the aluminum core wire end, and is soldered to the peripheral surface of the aluminum core wire end,
The said insertion part is inserted and crimped | bonded to the said electric wire connection sleeve, and the front-end | tip of the said aluminum core wire end part is formed so that insertion is possible, The aluminum electric wire connection terminal characterized by the above-mentioned . A wire connection terminal unit for connecting an aluminum wire and a resin-coated wire,
An electric wire connecting sleeve to which the core end of the resin-coated electric wire is inserted and connected;
Covering the peripheral surface of the end portion of the aluminum core wire of the aluminum electric wire, brazed to the peripheral surface, and integrally formed with the covering portion, and inserted into the electric wire connection sleeve and connected and a aluminum electric wire connection terminal having,
The covering portion of the aluminum wire connection terminal is formed in a comb-like shape that exposes a part of the peripheral surface when the peripheral surface of the aluminum core wire end portion is covered, and is soldered to the peripheral surface of the aluminum core wire end portion. Attached,
The electric wire connection terminal unit, wherein the insertion portion of the aluminum electric wire connection terminal is inserted into the electric wire connection sleeve and is crimped, and an end of the aluminum core wire end is insertable .

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