JP2009021148A - Wire connection structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wire connection structure capable of easily and quickly conductively connecting even a wire, an electronic component with a small conductive part, or a component weak in force in a twisting direction. <P>SOLUTION: A conductive end face 'a' of a conductor A and a wire end face b of a wire D are arranged close to each other face to face at a connection crimping terminal 1 at least equipped with two, first and second, caulking pieces 2a, 2b; and the both faces are caulked and fixed for coupling with the first and the second caulking pieces 2a, 2b. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a wire connection structure.

  Conventional wire connection structures include a structure in which conductive wires (core wire or stranded wire) of connected wires are twisted together and connected by soldering, or a conductive wire (core wire or stranded wire) between connected wires. Etc.) is tentatively connected, and a structure in which the entangled portion is crimped and connected to a straight-type crimp terminal having an opening after interior is known. Moreover, the connection structure of the electric wire thermocompression-bonded to the entangled part entangled like patent document 1 is known.

In addition, when connecting electrical wires to the lead wires (conductors) of electronic components such as small thermals and fuses used on boards, many of the connection parts of the electronic components are wire-like conductors (single wire reeds). -Wire), so that the conductor (lead wire, etc.) of the electronic component is surrounded by the conductor wire (twisted wire, core wire, etc.) and entangled, or the conductor of the wire is connected to the conductor of the electronic component. Was temporarily connected by winding, and then connected with a crimp terminal or solder.
Japanese Patent No. 2927623

  However, time-consuming and labor-intensive operations such as on-site repairs and soldering work in the assembly process, and tangling and winding of conductive wires (core wires, stranded wires, etc.) are required. Further, when a load that twists the conductor (particularly, a wire-like lead wire) of the electronic component is applied, there is a problem that the single wire of the electronic component is broken and broken. In addition, there is a problem that requires skilled skills to connect electronic components that are vulnerable to heat with solder.

  The problem to be solved is to twist and connect thin conductors (core wires, stranded wires, single wires, lead wires, etc.) of thin electric wires or small parts that are to be conductively connected (form entangled portions) It takes time and effort, and it is difficult to connect by soldering or the like.

  Therefore, the present invention has an object to provide a wire connection structure that can easily and quickly conduct a conductive connection even if the conductor portion of an electric wire or an electronic component is small or a component that is weak against a twisting force. To do.

  In order to achieve the above object, the electric wire connection structure according to the present invention has a connection crimp terminal having at least two first and second caulking pieces, and the conductor end face of the conductor and the electric wire end face of the electric wire approach each other in a face-to-face manner. Or arranged in contact with each other and caulked and fixed by first and second caulking pieces.

  Further, a third caulking piece is formed on the connection crimp terminal, and the insulating coating portion of the electric wire is caulked and fixed.

The first and second caulking pieces are formed in a holding shape in the caulking state.
Moreover, the said 3rd crimping piece is formed in the holding shape in the caulking fixed state.

  According to the electric wire connection structure of the present invention, the conductor and electric wire to be connected are arranged close to or in contact with each other and are caulked and fixed by the first and second caulking pieces. Can be easily, quickly and reliably connected without the need to twist them together (form an entangled portion). In addition, the electric wires can be connected easily and reliably without the need for skilled skills such as soldering.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
FIG. 1 is a perspective view showing a use state of an electric wire connection structure according to the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a sectional view of an essential part thereof.

  The electric wire connection structure according to the present invention is configured by arranging a conductor end surface a of a conductor A such as a lead wire of a small electronic component and an electric wire end surface b of an electric wire D having a small diameter close to or close to each other. For example, a connection structure for connecting a wire D to a conductor A such as a lead wire of an electronic component such as a small fuse or a thermal connector by crimping (crimping) with a metal connection crimp terminal 1 Used as

The conductor A is a single wire (lead wire) having a wire shape (diameter: 0.2 mm to 1.5 mm) protruding from a small electronic component (thermistor, thermal, fuse, etc.). The thin wire D (having a diameter of 0.5 mm to 2.5 mm) has a plurality of metal conductive wires B (twisted wires, core wires, etc., and a conductive cross-sectional area of 0.1 mm ^{2 to} 0.5 mm ² . Is covered with an insulating covering portion C made of an insulating member. The connection crimp terminal 1 is formed by press-molding a thin plate metal member (having a thickness of 0.1 mm to 0.5 mm) obtained by plating phosphor bronze. Moreover, the connection crimp terminal 1 is an electrically conductive conductor. Moreover, the electric wire D shown in FIGS. 1-3 is the state which peeled the insulation coating part C of the connection direction front-end | tip part, and exposed the some conduction line B. FIG.

  An example of implementation of the connection crimp terminal 1 is shown in the figure. FIG. 4 is a plan view thereof, and FIG. 5 is a side view thereof. 6 is a cross-sectional view taken along line AA of FIG. 5, FIG. 7 is a cross-sectional view taken along line BB of FIG. 5, and FIG. 8 is a cross-sectional view taken along line CC of FIG.

  The connection crimp terminal 1 is formed by bending a thin metal plate into an arc shape and plastically deforming it. Also, a pair of opposed first caulking pieces 2a provided at one end in the longitudinal direction (axial center L direction) of the connection crimping terminal 1 so as to protrude from the arc to form a U shape in a cross-sectional view in the short direction. , 2a is formed. The conductor caulking portion 2A is formed in a size capable of being installed so as to sandwich the conductor A. Each of the first caulking pieces 2a and 2a is plastically deformed so as to be bent toward the inner surface side of the U-shape so that the conductor 1 can be caulked and fixed (crimped) to the connection crimp terminal 1. The first caulking piece 2a is formed to have a shape for embedding the conductor A in a caulking-fixed state (state in which the conductor A is crimped to the connection crimp terminal 1).

  Further, a pair of opposing second caulking pieces 2b provided at the intermediate portion in the longitudinal direction (axial center L direction) of the connection crimping terminal 1 so as to protrude in an arc shape by extending the arc to have a U-shape in a cross-sectional view in the short direction. , 2b is formed. The conductive wire caulking portion 2B is formed in a size that allows interior decoration so as to sandwich the plurality of conductive wires B. Further, each second caulking piece 2b, 2b is plastically deformed so as to be bent toward the inner surface side of the U-shape, and the conductive wire B of the electric wire D is brought into contact with the connection crimp terminal 1 so as to be caulked and fixed (crimped). is doing. The second caulking piece 2b is formed to have a shape that embraces the conducting wire B of the electric wire D in the caulking and fixed state (the electric wire D is crimped to the connection crimping terminal 1).

  Moreover, it has a pair of opposing third caulking pieces 2c and 2c provided at the other end in the axial center L direction of the connection crimp terminal 1 so as to protrude from the arc and extend in a U-shape when viewed in the short direction. A covering caulking portion 2C is formed. The covering caulking portion 2 </ b> C is formed in a size that allows interior decoration so as to sandwich the insulating covering portion C. Further, each of the third caulking pieces 2c, 2c is plastically deformed so as to be bent toward the inner surface of the U-shape, and the covering insulating portion C of the electric wire D is formed so as to be caulked and fixed (crimped) to the connection crimping terminal 1. Yes. The 3rd crimping piece 2c is formed so that it may become the shape which embraces the conduction line B of the electric wire D in the caulking fixation state (state which crimped the electric wire D to the connection crimp terminal 1).

  Further, between the conductor caulking portion 2A and the conductive wire caulking portion 2B (to connect the conductor caulking portion 2A and the conductive wire caulking portion 2B), a face-to-face connection portion 3 having a U-shape in cross section in the short direction is formed. Yes. When the conductor A is caulked and fixed by the first caulking piece 2a, and the conductive wire B of the electric wire D is caulked and fixed by the second caulking piece 2b, the facing connection portion 3 is an end face of the conductor A. The conductor end surface a and the wire end surface b which is the end surface of the conducting wire B (which is also the end surface of the electric wire D) are formed so as to face each other so as to be able to approach or contact.

  Further, when the conductive wire B is provided in the conductive wire caulking portion 2B and the insulation coating portion C is provided in the covered caulking portion 2C and fixed by caulking, the conductive wire B does not bend suddenly. In order to do so, the different-diameter coupling portion 4 is formed which is coupled in a diameter-expanded manner from the conductive wire caulking portion 2B to the covering caulking portion 2C. Further, it is desirable that the different diameter connecting portions 4 are formed so as to be concentric in a state in which the conductor A and the electric wire D are respectively housed in the connection crimp terminal 1.

  In other words, in other words, the connection crimp terminal 1 can be crimped by placing the conductor A on one end in the longitudinal direction (axial center L direction) of the conducting wire crimping portion 2B that can be crimped by placing the conducting wire B of the electric wire D inside. 2A is connected to the other end of the conductive wire caulking portion 2B, and an insulating covering portion C of the electric wire D is provided in the other end of the conductive wire caulking portion 2B. A metal thin plate member is integrally formed in a U-shape by press molding so as to have a shape connected via different diameter connecting portions 4 for linearly interior. The conductor end surface a of the conductor A and the wire end surface b of the electric wire D (which is also the end surface of the conducting wire B) are housed in the facing connection portion 3 in a state of approaching or abutting in a face-to-face manner. 1 can be crimped to each other, and can be connected so that electricity can be conducted. Moreover, it is a structure which can be connected, without twisting the conductor A and the electric wire D (the conduction wire B) (entanglement).

  In addition, the edge part on the electronic component side of the caulking portion 2A of the conductor is expanded in diameter (flared) in the caulking state and is prevented from being cut and damaged when the conductor A is pressed. It is desirable to form a bell mouth). In addition, the conductive wire caulking portion 2B has an end edge on the insulating coating portion C side that is expanded in diameter (flared) in a caulking-fixed state to prevent disconnection or damage when the conductive wire B is crimped. It is desirable to form a cutting prevention edge 11 (bell mouth).

  The design of the present invention can be changed. For example, the size and length of the conductor caulking portion 2A, the conductive wire caulking portion 2B, and the covering caulking portion 2C are designed according to various electric wires and lead wires to be conductively connected. It is free to change. Further, when the conductor A (lead wire) from the electronic component is covered with the insulating member, the covering caulking portion for the conductor A is connected to the electronic component side (one end) of the conductor caulking portion 2A. You may form integrally.

The connection method and operation of the above-described wire connection structure of the present invention will be described.
First, the insulation coating portion C at the tip end portion of the electric wire D is peeled off, and the plurality of conductive wires B inside the electric wire D are exposed. A plurality of conducting wires B of the electric wire D are internally provided in the conductive wire caulking portion 2B, and an insulating coating portion C of the electric wire D is provided in the covering caulking portion 2C. Next, the conductor A is embedded in the conductor caulking portion 2A, and the facing connecting portion is such that the conductor end surface a of the conductor A approaches or abuts on the wire end surface b (also the end surface of the conducting wire B) which is the end surface of the electric wire D. 3 is installed (arranged). (At this time, before the electric wire D is installed in the connection crimp terminal 1, the conductor A may be installed in the conductor caulking portion 2A first.) Further, the conductive wire B of the electric wire D is connected by the different diameter connecting portion 4. Without being affected by the wall thickness of the covering portion C, the cover portion C is disposed so as to contact the inner surface side bottom portion of the connection crimp terminal 1 with certainty. Moreover, the conductor A and the electric wire D are arrange | positioned concentrically.

  Then, the pair of first caulking pieces 2a, 2a, the pair of second caulking pieces 2b, 2b, and the pair of third caulking pieces 2c, 2c are caulked with a predetermined tool or the like. Then, the pair of first caulking pieces 2a and 2a are embraced so that the conductor A is caulked and fixed. Further, the pair of second caulking pieces 2b and 2b are embraced and caulking and fixing the electric wire D (conducting wire B). Further, the pair of third caulking pieces 2c, 2c are embraced and caulked and fixed to the electric wire D (insulation coating portion C).

  Further, when the caulking piece 1a is caulked, the conductor cutting preventing edge portion 10 is slightly enlarged in diameter (flared), and the conductor A is caulked and fixed to the crimping connection terminal 1 without fear of damage or cutting. Further, the conductive wire cut preventing edge portion 11 has a slightly enlarged diameter (flared), and the conductive wire B of the electric wire D is caulked and fixed to the crimp connection terminal 1 without fear of damage or cutting. Further, the conductive wire B of the electric wire D is caulked and fixed without being bent suddenly by the different diameter connecting portion 4. In addition, the conduction line B is securely contacted and fixed to the bottom of the U-shaped inner surface. The conductor A and the electric wire D are caulked and fixed concentrically.

In other words, the conductor A and the electric wire D (conducting wire B) do not form an entangled portion (twisted portion), but the conductor end surface a of the conductor A and the electric wire end surface b of the electric wire D are brought close to each other and caulked. To do. Then, the conductor A and the conductive line B of the electric wire D are each brought into contact with and fixed to the connection crimp terminal 1. That is, even if they are not in direct contact with each other, the electric wire connection structure in which the electric wire D is coupled (connected) to the electronic component so as to be energized by the connection crimp terminal 1 is obtained.
In the present invention, the conductor A also includes an electric wire. Therefore, it is preferable to have a connection structure of the electric wire A and the electric wire D.

  As described above, in the present invention, the connection crimping terminal 1 having at least two first and second caulking pieces 2a and 2b is formed so that the conductor end surface a of the conductor A and the electric wire end surface b of the electric wire D face each other. Since the first and second caulking pieces 2a and 2b are caulked and fixed and connected to each other, it is not necessary to form an entangled portion entangled with the conductor A and the electric wire D, and Connect quickly. Further, even various electronic components and electric wires having heat-sensitive components and conductor portions weak in the twisting direction can be easily connected. In particular, it is possible to easily and quickly connect a small electronic component or a thin electric wire that has been difficult to form the entangled portion in which the conductive wire B of the electric wire D is twisted to the conductor A of the electronic component. Also, it can be easily operated without requiring special skills such as soldering. Moreover, it is hard to be influenced by a worker's skill, and the finish after a connection can be made uniform. Further, the conductor A and the electric wire D can be energized via the connection crimp terminal 1 even if they are not in direct contact.

  In addition, since the third crimping piece 2 c is formed on the connection crimp terminal 1 and the insulation coating portion C of the electric wire D is caulked and fixed, the electric wire D can be more firmly connected to the connection crimp terminal 1. Further, even when a force such as twisting or bending is applied to the electric wire D, the load is held by the crimping portion between the insulating coating portion C and the third caulking piece 2c, and no load is applied to the conductive wire B (the conductive wire B (Stress concentration does not work on weak parts) and disconnection can be prevented. Moreover, the disconnection of the electric wire D can be prevented.

Further, since the first and second crimping pieces 2a and 2b are formed to be held in a caulking and fixed state, the conductor A can be caulked and fixed (crimped) to the connection crimping terminal 1 more reliably. Moreover, the electric wire D can be caulked and fixed (crimped) to the connection crimp terminal 1 more reliably.
In addition, since the third caulking piece 2c is formed in a squeezed state in a caulking fixed state, the insulating coating portion C can be caulked and fixed (crimped) to the connection crimping terminal 1 more reliably. That is, the electric wire D can be caulked and fixed (crimped) to the connection crimp terminal 1 more reliably.

  Of course, not only the components and electric wires of the above-described example, but also the lead wires of various electronic components and the conductive wires of various electric wires can be energized and connected.

It is a perspective view which shows the use condition of the electric wire connection structure which concerns on this invention. It is a side view which shows the use condition of the electric wire connection structure which concerns on this invention. It is principal part sectional drawing which shows the use condition of the electric wire connection structure which concerns on this invention. It is a top view which shows an example of a connection crimp terminal. It is a side view which shows an example of a connection crimp terminal. It is principal part sectional drawing which shows an example of a connection crimp terminal. It is principal part sectional drawing which shows an example of a connection crimp terminal. It is principal part sectional drawing which shows an example of a connection crimp terminal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connection crimp terminal 2a 1st crimping piece 2b 2nd crimping piece 2c 3rd crimping piece A Conductor C Insulation coating part D Electric wire a Conductor end surface b Electric wire end surface

Claims (4)

  A connection crimp terminal (1) having at least two first and second crimping pieces (2a) (2b), a conductor end surface (a) of the conductor (A), an electric wire end surface (b) of the electric wire (D), A wire connection structure characterized in that the first and second caulking pieces (2a) and (2b) are caulked and fixedly connected to each other.   The wire connection structure according to claim 1, wherein a third crimping piece (2c) is formed on the connection crimp terminal (1), and the insulation coating portion (C) of the wire (D) is crimped and fixed.   The electric wire connection structure according to claim 1, wherein the first and second caulking pieces (2a) and (2b) are formed in a hug shape in a caulking state.   The electric wire connection structure according to claim 2, wherein the third caulking piece (2 c) is formed so as to be held in a caulking state.

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