JP3614770B2 - Electronic component using braided wire and manufacturing method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic component using a braided wire used in a power transformer such as a switching transformer and a method for manufacturing the electronic component.
[0002]
[Prior art]
Generally, in electronic parts such as coils and transformers, one end surface of a collar provided at both ends of a bobbin is used as a terminal holding part with a large width, and connection terminals are implanted in the terminal holding part. And the terminal of the coil wound between the collar part of a bobbin is entangled and soldered to the said connection terminal.
Here, as a small and low-loss transformer used for high-current applications, a plurality of insulated single-wire assembly lines are knitted in the winding so that each assembly line alternately shifts inward and outward, A general coil using a braided wire continuously formed so that the outer shell shape approximates a rectangular wire is shown in FIG.
[0003]
In FIG. 3, 30 is a braided wire, 31 is a coil bobbin in which a collar portion and a winding portion are integrally formed of an insulating synthetic resin, 32 is a winding wound around the braided wire 30, and 32a is a terminal of the winding. It is. Reference numeral 33 denotes an external connection terminal for connecting the end of the winding to the outside.
The terminal 32a of the winding 32 wound around the coil bobbin 31 is entangled with the external connection terminal 33 provided at the collar, and the excess terminal is cut and soldered. Thus, when the end of the braided wire is tangled to the external connection terminal 33, the fold 34 becomes larger (a) as shown in the enlarged view of the lash portion in FIG. It becomes stable. If the stand-off is provided on the bottom surface of the coil bobbin in consideration of the curled portion (not shown), there is a problem that the size is increased. Further, in the cross section obtained by cutting the end of the braided wire, there is a problem that the assembly line is frayed to become a whisker 34 and short-circuited with other external terminals or other parts. Therefore, in order to prevent fraying of the terminal, the crimp terminal 35 is generally used as the external connection terminal as shown in FIG. 3C. However, the use of the crimp terminal 35 increases the crimping process and external connection. There was a problem that the connection with the terminal was complicated.
[0004]
[Problems to be solved by the invention]
The present invention has been made in view of such a background, and in an electronic component such as a transformer using a braided wire, an electronic device using a coil bobbin that is small in size and has good workability and does not cause a short due to a beard. The purpose is to provide parts.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention is such that an L-shaped terminal is implanted in a terminal holding part formed on a collar part of a bobbin, and a connection terminal connected to a coil terminal is provided on a side surface of the terminal holding part. An electronic component in which a braided wire is wound around a coil bobbin formed with an external terminal connected to an external circuit on its lower surface is characterized in that a groove for sandwiching the terminal of the coil is provided on the lower surface of the bobbin in parallel with the external terminal.
Alternatively, a groove for holding the end of the coil is provided on the side surface of the bobbin in parallel with the connection terminal. The shape of the groove for holding the coil terminal is made U-shaped or V-shaped so that the coil terminal can be easily held.
Moreover, the guide which formed the groove | channel is provided with the U-shaped or V-shaped slit which hold | maintains the terminal of a coil, and the operation | work which cut | disconnects a terminal is made easy.
[0006]
And the manufacturing method of the electronic component using a braided wire has implanted the L-shaped terminal in the terminal holding part formed in the collar part of a bobbin, and connected the terminal connected to the terminal of a coil on the side of a terminal holding part. An external terminal connected to an external circuit on the lower surface thereof, and a braided wire is wound around a coil bobbin in which a groove for sandwiching the terminal of the coil is provided on the lower surface of the bobbin or on the side surface of the bobbin in parallel with the external terminal. After the end of the wound winding is inserted into the connection terminal and locked, the terminal is pushed into the groove and clamped, then the remaining part of the terminal is cut, and then the terminal and the connection terminal are soldered.
Alternatively, the end of the wound winding is pierced and locked to the connection terminal, and after cutting off the surplus part of the terminal, the terminal is pushed into the groove and sandwiched, and then the terminal and the connection terminal are soldered. In addition, the end of the winding wound around the coil bobbin provided with a slit for holding the end of the coil in the guide that forms the groove is pierced and locked to the connection terminal, and after holding the end of the coil in the slit, The terminal is pushed into the groove and cut, and then the terminal and the connection terminal are soldered.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The electronic component using the braided wire of the present invention implants an L-shaped terminal in the terminal holding part formed on the collar part of the bobbin, and provides a connection terminal connected to the terminal of the coil on the side surface of the terminal holding part, In an electronic component in which a braided wire is wound around a coil bobbin having an external terminal connected to an external circuit on its lower surface, a groove for sandwiching the terminal of the coil is provided on the lower surface of the bobbin in parallel with the external terminal.
Or, by providing a groove to clamp the coil end on the side of the bobbin in parallel with the connection terminal, the coil end wound with braided wire on the external terminal can be placed in the groove to prevent fraying. can do. The shape of the groove is U-shaped or V-shaped so that the end of the winding can be easily held.
Furthermore, by providing a slit for holding the end of the coil in the guide in which the groove is formed, the work of cutting the end of the winding becomes easy. The slit is made U-shaped or V-shaped so that the end of the winding can be easily held.
[0008]
And the manufacturing method of the electronic component using a braided wire has implanted the L-shaped terminal in the terminal holding part formed in the collar part of a bobbin, and connected the terminal connected to the terminal of a coil on the side of a terminal holding part. After winding the braided wire around the coil bobbin that has an external terminal connected to the external circuit on the bottom surface, pierce and lock the end of the wound winding into the connection terminal, and push the terminal into the groove and pinch it Then, the remainder of the terminal is cut, and then the terminal and the connection terminal are soldered.
Alternatively, the end of the wound winding is pierced and locked to the connection terminal, and after cutting off the surplus part of the terminal, the terminal is pushed into the groove and sandwiched, and then the terminal and the connection terminal are soldered.
Further, the end of the wound winding is pierced and locked in the connection terminal, the end of the coil is held in the slit, the end is pushed into the groove, and then the terminal and the connection terminal are soldered.
[0009]
【Example】
Embodiments of the present invention will be described below with reference to FIGS.
FIG. 1 shows an embodiment of an electronic component using a braided wire according to the present invention. Reference numeral 1 denotes a bobbin in which a flange portion and a winding frame portion are integrally formed of an insulating synthetic resin, and 2 is a lower flange of the bobbin. Reference numeral 3 denotes a winding wound with a braided wire, and reference numeral 3 a denotes a terminal of the winding 3. 4 is an L-shaped terminal planted in the terminal holding part of the lower rod 2, and one end 4 a of the terminal is a short connection terminal that pierces and connects the terminal 3 a of the winding 5 to the side surface of the lower rod. The other end 4b is a long external terminal that protrudes from the bottom surface of the lower collar 2 and connects to an external circuit. Reference numeral 5 denotes a U-shaped or V-shaped groove for pushing a winding terminal 3 a provided in parallel to the external terminal 4 b on the bottom surface of the lower rod 2, and 6 is a guide for the groove 5. The part which is easy to fray of the end 3a of the winding can be sandwiched between the grooves.
[0010]
Next, a method for manufacturing an electronic component using a braided wire will be described with reference to FIG. First, the terminal 3a of the winding 3 wound by the braided wire on the bobbin 1 having a winding shaft in the vertical direction is drawn out along the side surface of the lower arm 2, and the central portion of the width of the braided wire is connected to the connection terminal 4a. And the terminal 3a is pushed into the groove 5 with a cutter or the like (or a tool with a blade), and the terminal 3a is sandwiched in the groove and cut, or the terminal 3a is previously After cutting along the surface of the guide 6, it may be pushed into the groove 5 and clamped. And it connects with the connecting terminal 4a which pierced the terminal 3a of the coil | winding by soldering.
FIG. 1B shows a guide 6 in the groove 5 provided with a V-shaped or U-shaped slit 7, and a winding terminal 3 a is pierced into the connection terminal 4 a and After being routed and temporarily clamped in the slit 7 of the guide 6, it is cut with a cutter or the like 8 (or a jig with a blade), so that the winding work-the piercing work into the connection terminal 4a-the drawing work of the terminal 3a-the terminal The cutting operation can be easily performed by a series of operations.
[0011]
Thus, according to the present invention, the winding terminal can be connected to an external circuit without being tangled to the external terminal, and can be mounted on the circuit board without increasing the shape of the electronic component, and By holding the terminal in the groove, a whisker due to fraying is not generated. In addition, the work efficiency can be improved because the work is merely piercing the connection terminal without tangling the end of the winding of the braided wire to the terminal.
[0012]
Next, another embodiment of the present invention will be described with reference to FIG. Reference numeral 11 denotes a bobbin in which the flange portion and the winding frame portion are integrally formed of an insulating synthetic resin, and reference numeral 12 denotes a lower flange of the bobbin. Reference numeral 13 denotes a winding wound with a braided wire, and reference numeral 13 a denotes a terminal of the winding 13. 14 is an L-shaped terminal planted in the terminal holding portion of the lower collar 12, and one end 14a of the terminal is a short connection terminal that protrudes from the side surface of the lower collar 12 and pierces and connects the terminal 13a. The other end 14b is a long external terminal that protrudes from the bottom surface of the lower collar 12 and connects to an external circuit. Reference numeral 15 denotes a U-shaped or V-shaped groove for pressing and clamping a terminal 13 a provided in parallel to the connection terminal 14 a on the side surface of the lower collar 12, and 16 is a guide for the groove 15.
[0013]
Next, a method for manufacturing an electronic component using the braided wire coil bobbin will be described.
First, the end 13a of the winding 13 wound with a braided wire on a bobbin 11 having a winding shaft in the horizontal direction is pulled out along the side surface from the bottom surface of the lower collar 12, and the central portion of the width of the braided wire of the end 13a Is inserted into the connecting terminal 14a provided on the side surface of the lower arm 12, and the terminal 13a is pushed into the groove 15 with a cutter or the like (or a jig with a blade), and the terminal 13a is pushed in and cut, or the terminal 13a is previously After cutting at the surface of the guide 16, it may be pushed into the groove 15 and pinched. And the connection terminal 14a which pierced the terminal 13a of the coil | winding is connected by soldering.
Then, as shown in FIG. 1B, a slit-shaped guide groove is provided in the groove guide provided in the bobbin, and the end of the braided wire is sandwiched, whereby the work efficiency can be further increased.
[0014]
As mentioned above, although the electronic component using the braided wire of this invention and its manufacturing method were described, this invention is not limited to these Examples. For example, the bobbin may have a round shape as well as a square shape, or a combination of a bobbin and a magnetic material. Also, for the braided wire, a plurality of insulated single wire assembly lines are continuously formed so that the outer shell shape approximates a rectangular wire by braiding so that each assembly line is alternately displaced inward and outward However, it is also possible to use an assembly line knitted intricately from a single assembly line (such as a litz wire or a stranded wire). Further, the shape of the groove for pushing the end of the braided wire and the shape of the slit of the guide may be not only U-shaped or V-shaped but also taper capable of holding the braided wire. Furthermore, the bobbin may have a structure that facilitates wiring by providing a taper or a concave groove in a portion where the braided wire is routed.
[0015]
【The invention's effect】
As described above, the electronic component using the braided wire of the present invention uses the coil bobbin in which the L-shaped terminal is implanted, pierces the terminal of the winding wire using the braided wire into the connection terminal, and pushes the braided wire into the groove By providing this, it can be mounted on a circuit board and connected to an external circuit without increasing its shape. And since it does not generate a beard, it can be safely mounted on a circuit board. In addition, since the work is merely piercing without tangling the end of the winding of the braided wire to the connection terminal, there are various effects such as improvement of work efficiency. Furthermore, the structure is simple.
[Brief description of the drawings]
1 is a perspective view of an electronic component using a braided wire according to an embodiment of the present invention. FIG. 2 is a perspective view of an electronic component using a braided wire according to another embodiment of the present invention. Explanatory diagram of electronic parts using the braided wire [Explanation of symbols]
1 Bobbin 2 Lower rod 3 Winding 3a Winding terminal 4, 4a, 4b Terminal 5 Groove 6 Guide 7 Slit

Claims (7)

An L-shaped terminal is implanted in the terminal holding part formed on the collar part of the bobbin, a connection terminal connected to the terminal of the coil is provided on the side surface of the terminal holding part, and an external terminal connected to an external circuit is provided on the lower surface thereof. In an electronic component with a braided wire wound around a coil bobbin
An electronic component using a braided wire, characterized in that a groove for holding the end of the coil is provided on the lower surface of the bobbin in parallel with the external terminal. An L-shaped terminal is implanted in the terminal holding part formed on the collar part of the bobbin, a connection terminal connected to the terminal of the coil is provided on the side surface of the terminal holding part, and an external terminal connected to an external circuit is provided on the lower surface thereof. In an electronic component with a braided wire wound around a coil bobbin
An electronic component using a braided wire, characterized in that a groove for holding the end of the coil is provided on a side surface of the bobbin in parallel with the connection terminal. The electronic component using the braided wire according to claim 1 or 2, wherein a cross-sectional shape of the groove is U-shaped or V-shaped. The electronic component using the braided wire according to claim 1 or 2, wherein a U-shaped or V-shaped slit for holding a terminal of the coil is provided in the guide in which the groove is formed. An L-shaped terminal is implanted in the terminal holding part formed on the collar part of the bobbin, a connection terminal connected to the terminal of the coil is provided on the side surface of the terminal holding part, and an external terminal connected to an external circuit is provided on the lower surface thereof. A braided wire is wound around a coil bobbin in which a groove for holding the terminal of the coil is provided on the lower surface of the bobbin or on the side surface of the bobbin in parallel with the external terminal, and the terminal of the wound winding is pierced into the connection terminal. A method of manufacturing an electronic component using a braided wire that stops, presses and clamps the terminal into the groove, and then cuts an excess part of the terminal and then solders the terminal and the connection terminal. An L-shaped terminal is implanted in the terminal holding part formed on the collar part of the bobbin, a connection terminal connected to the terminal of the coil is provided on the side surface of the terminal holding part, and an external terminal connected to an external circuit is provided on the lower surface thereof. A braided wire is wound around a coil bobbin in which a groove for holding the terminal of the coil is provided on the lower surface of the bobbin or on the side surface of the bobbin in parallel with the external terminal, and the terminal of the wound winding is pierced into the connection terminal. A method of manufacturing an electronic component using a braided wire that stops, cuts off an excess portion of the terminal, presses and holds the terminal in the groove, and then solders the terminal and the connection terminal. An L-shaped terminal is implanted in the terminal holding portion formed on the collar portion of the bobbin, a connection terminal connected to the terminal of the coil is provided on the side surface of the terminal holding portion, and an external terminal connected to an external circuit is provided on the lower surface thereof It has an external terminal that connects to the external circuit on the bottom surface ,
A groove for holding the end of the coil is provided on the lower surface of the bobbin or on the side surface of the bobbin in parallel with the external terminal, and a braided wire is wound around the coil bobbin in which a slit for holding the end of the coil is provided in a guide for forming the groove . The end of the wound winding is pierced and locked to the connection terminal, the terminal of the coil is held in the slit, the terminal is pushed into the groove, and the excess portion is cut, and then the terminal and the connection An electronic component manufacturing method using braided wires for soldering terminals.

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