JPH02130806A - Terminal unit and method of processing ends of windings using the terminal unit - Google Patents

Abstract

PURPOSE:To obtain a winding terminal unit for easily automating the processing of ends by a method wherein a connection piece for connecting the leading end of a winding is mounted on a first lead terminal set up in a winding groove and a terminal fixation section, and a second lead terminal is connected to the termination of the winding. CONSTITUTION:A core block 2 is set up by a ferromagnetic material. A winding groove 4 is disposed in the core block 2 and two or more yoke 6 is mounted. A flat wire material 10 is wound on a winding groove 4. A terminal unit 12 formed by an insulating material is fixed to the yoke 6. A first lead terminal 16 is rotatably mounted and a second lead terminal 18 are strongly fixed to a terminal fixation section 14. The leading end of the wire material 10 is connected to the lead terminal 16, and its termination is connected to the lead terminal 18. A connection piece 20 is integrally formed on the lower end of the shaft of the lead terminal 16 and connected to the start end of the wire material 10.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a terminal unit used for various windings such as a drive winding for a wire dot printer head, and a method for processing winding ends using the terminal unit. .

[Conventional technology]

Conventionally, drive windings for wire dot printer heads have been formed using round wire rods or flat wire rods, but flat wire rods can improve the area ratio compared to round wire rods, and
It is excellent in that it can be wrapped in multiple layers.

In addition, for round wire rods, multiple windings using bobbins are used.
A portion of the wire at the beginning and end of the winding is used as a lead, and the beginning of the winding is fixed by taping.

On the other hand, even flat wire rods are multi-wound using bobbins,
The beginning of the winding is fixed with taping like the round wire rod.

[Problem to be solved by the invention]

By the way, various winding ends are manually processed by workers, such as fixing the winding ends to bobbin terminals by taping, peeling off the insulation coating of the wire for connection, and soldering to printed cards. However, it is difficult to reduce the number of man-hours when using manual methods, which reduces production efficiency.Furthermore, boiling chemical soda is used to remove the insulation film from the ends of the windings, which poses a danger to workers. There were inconveniences such as exposure.

When a flat wire is used, the beginning of the winding is folded back to form a lead, and this folding causes the winding surface to be biased, causing a problem in that the winding surface is warped.

Therefore, this invention was made in order to automate winding end processing without sacrificing the advantages of flat wire rods, such as improving the area ratio and being able to overlap windings.
The purpose of this is to provide a terminal unit for windings that facilitates the automation of winding end processing.The second purpose is to provide a winding end terminal unit that realizes automation of winding end processing using a terminal unit. The third purpose is to provide a method for treating the winding end insulating the connection part of the winding end, and the fourth purpose is to provide a method for treating the winding end and the second lead. An object of the present invention is to provide a method for processing winding ends that facilitates connection with terminals.

[Means to solve the problem]

In order to achieve the first object, the terminal unit of the present invention has a structure that facilitates automation of winding end processing, and is formed by sandwiching a winding groove of a wound member around which a winding is wound. a terminal fixing part; a first lead terminal attached to the terminal fixing part and having a connection piece for connecting the start end of the winding wire installed in the winding groove; a first lead terminal attached to the terminal fixing part and connecting aid a second member connected to the terminal end of the winding using a member;
It is equipped with a lead terminal.

Next, in order to achieve the second object, the winding end processing method using the terminal unit of the present invention is such that, together with the structure of the terminal unit, the winding end processing is simplified. After fixing a terminal unit including a winding groove and first and second lead terminals to the winding member, guiding a starting end of a continuous flat wire to the winding groove of this terminal unit,
a step of peeling off the insulation coating on the starting end side of the flat wire in a specific range to form a first peeled part at the starting end of the flat wire; and adding the first lead to the first peeled part. After the step of connecting the connecting piece of the terminal and the winding of the flat wire in the winding groove to form a winding, the insulation coating on the terminal end side is peeled off in a specific range, and the flat wire is forming a second peeled part at the terminal end, interposing a connection auxiliary member between the second peeled part and the second lead terminal, and forming the second peeled part and the second lead; The content consists of the process of connecting terminals.

Next, in order to achieve the third object, the winding end processing method using the terminal unit of the present invention is such that after installing an insulating member on the connection piece of the first lead terminal, The purpose is to wind the wire.

Next, in order to achieve the fourth object, the winding end processing method using the terminal unit of the present invention includes: the connection auxiliary member is formed by a lead frame corresponding to the second lead terminal; The content includes connecting and cutting the second peeling portion and the second lead terminal.

[Function] In the terminal unit of the present invention, the terminal fixing portion has a first connecting piece facing the winding groove and connecting the starting end of the winding in the winding groove, corresponding to the member to be wound. A lead terminal and a second lead terminal that is attached to the terminal fixing part and connects the terminal end of the winding with a connection auxiliary member interposed are installed, and the starting end of the winding is connected to the first lead terminal. The terminal end can be easily connected to the second lead terminal by interposing a connection auxiliary member. By using this terminal unit, the processing of winding ends can be automated. In addition, the terminal unit has first and second lead terminals that are independent of the windings, and since they are installed in the terminal fixing part, the first and second lead terminals can be attached to a wiring board, etc. Windings can be easily connected using

Next, in the winding end processing method using the terminal unit of the present invention, the terminal unit is used to connect the starting end and the terminal end of the flat wire rod. After forming a first peeled part by peeling off the insulating film on the starting end side of the coil, the first peeled part and the first lead terminal are connected, and then the winding is wound around the member to be wound. , after forming a second peeled part by peeling off the insulating film on the terminal end side, the second peeled part and the second lead terminal are connected via a connection auxiliary member, 1st
Alternatively, mechanical fixation can be simultaneously performed by electrically connecting the starting end or terminal end of the winding to the second lead terminal, eliminating the need for taping and peeling off the insulating film for connection. Processing steps are simplified and automation of winding end processing is achieved.

Next, the winding end processing method using the terminal unit of the present invention includes installing an insulating member on the upper surface of the connection piece of the J-th IJ +- terminal, and then winding the winding wire. , the connection piece can be reliably insulated, increasing the reliability of the winding.

Next, in the winding end processing method using the terminal unit of the present invention, the connection auxiliary member is formed by a lead frame corresponding to the second lead terminal, and after connecting to the second lead terminal, By cutting and removing the lead frame between the lead terminals, the terminal end of the winding can be easily processed.

〔Example] FIG. 1 shows an embodiment of the terminal unit of the invention.

As shown in FIG. 1(A), a core block 2 made of a ferromagnetic material such as Funilite is installed in the drive winding of the wire dot printer head, and a winding groove 4 is provided in the core block 2. Two or more yokes 6 are attached, and a winding groove 4 is provided (a support base 8 forming a 12-shape
is attached as one piece. A flat wire rod 10 is wound in each winding groove 4 .

A terminal unit 12 made of an insulating material such as an insulating synthetic resin is fixed to the yoke 6 with an adhesive or the like at a slight distance from the support base 8. This terminal unit 12 is provided with a winding groove 4 corresponding to the yoke 6, and a prismatic flat terminal fixing part 14 is installed with the winding groove 4 interposed therebetween. Terminal fixing part 1
One or more number 4 are installed corresponding to the number of windings to be installed.

In each terminal hole 15 formed in the terminal fixing portion 14, a first lead terminal 16 is rotatably attached at its shaft portion, and a second lead terminal 18 is firmly fixed. Each lead terminal 16.18 has the same shape, and the strength of the attachment of each lead terminal 16.18 to the terminal fixing part 14 and the mechanical strength of the terminal fixing part 4 depend on the winding tension of the winding wire. It is set to such an extent that they can face each other. The starting end of the wire i0 is connected to the lead terminal 1G, and the terminal end of the wire i0 is connected to the lead terminal 18.

A plate-shaped connection piece 20 is fixed through the terminal fixing part 14 and is formed on the lower end side of the terminal fixing part 14 . The lead terminal 16 is integrally formed with a connecting piece 20 that rotates to face the winding groove 4 at the lower end of the shaft, and the stepped portion of the winding groove 4 formed between the terminal fixing parts 14. 22
will be installed in

Then, the insulation coating 24 on the starting end side of the wire rod 10 for configuring the winding in the winding groove 4 is peeled off in a certain range to form a first peeled part 26, and this peeled part 26 is attached to the connecting piece 20. The connecting piece 20 is inserted between the connecting piece 20 and the winding groove 4 of the terminal unit 12, and the connecting piece 20 and the starting end of the wire 10 are connected by fixing means such as solder. With such an electrical connection, the starting end of the wire 10 is firmly fixed to the terminal unit 12 without any fixing means such as taping.

Further, as shown in FIG. 1(B), after the predetermined windings 2 and 8 are wound around the wire rod 10 in the winding groove 4,
A second peeled part 30 formed by peeling off the insulating film 24 on the terminal end side in a certain range is installed near the lead terminal 1. Then, a lead frame 32 as a connection auxiliary member is installed between the lead terminal 18 and the peeling part 30, and the terminal end of the wire 10 and the lead terminal 18 are connected with the lead frame 32 interposed by a fixing means such as soldering. electrically connected. As a result, the terminal end of the winding 28 and the lead terminal 18 are firmly fixed without the need for fixing means such as taping (by means of an electrical connection between the two).

Moreover, each winding 28 can be wound multiple times simultaneously in each winding groove 4 due to the shape of the terminal unit 12, and automatic winding processing is possible.

The lead frame 32 used to connect the lead terminals 18 and the terminal ends of the windings 28 is cut and removed for each lead terminal 18, thereby achieving insulation between the lead terminals 18.

Further, the terminal unit 12 can be easily formed by integral molding using an insulating synthetic resin or the like, and the terminal fixing portion 14, the winding groove 4, and the stepped portion 22 can be formed with high precision. The lead terminal 16 is rotatably attached to the terminal unit 12 to facilitate connection to the starting end of the winding 28, and the lead terminal 16 is firmly fixed by press-fitting or other means to the terminal end of the winding 28. This will improve the connection with the other side and avoid inconveniences such as unwinding of the winding.

Further, the stepped portion 22 is formed by flattening the bottom surface of the winding groove 4 by taking into consideration the thickness of the connection piece 20 of the lead terminal 16, the thickness of the wire IO, and the wraparound of solder. It is possible to prevent steps from occurring in the winding grooves 4, prevent winding lines and deformation of the windings 28 installed in the winding grooves 4, and also make the magnetic characteristics of each winding 28 uniform. be able to.

Since the terminal unit 12 is formed with lead terminals 16.18 independent of the winding 28, each lead terminal 16.18 can be easily wired to a wiring board, etc., and wiring processing, assembly, etc. Automatic processing is also possible.

Next, FIGS. 2 to 6 show an example of a winding end processing method using the terminal unit of the present invention in the order of steps.

As shown in FIG. 2, the flat wire 10 wound on the wire winding reel 34 is fed out by the rotation of the reel 34 in the direction shown by the arrow a, and is transferred in the direction already shown by the arrow, and the film is coated. 1i on the lower surface side of the rotary grindstone 36 as a peeling means
After being rolled, it is guided to the core block 2, which is a member to be wound, via the guide roller 38. The core block 2 is provided with a yoke 6 and a support base 8 that are fixed together, a terminal unit 12 is fixed to the yoke 6, and a plurality of winding grooves 4 are formed.

A rotary grindstone 36 is installed on the transferred wire lO so that it can rotate at high speed in the direction shown by arrow C and move in the directions shown by arrows d and e. descends in the direction of arrow e for a time of
It comes into contact with the wire rod 10 in the middle of being transferred. This contact causes the insulation coating 24 of the wire 10 to be peeled off, and a first peeled part 26 is formed on the starting end side of the wire 10, as shown in FIG. 3(A). In this embodiment, a mechanical film peeling means is used, but the peeling of the insulating film 24 can form a peeled part 26 with an area that can withstand current density and tensile strength, and does not damage the conductor. Mechanical or chemical peeling means can be used, and a laser or the like may also be used. If the rotary grindstone 36 is used as in the embodiment, worker safety can be improved compared to the conventional case where boiled chemical soda is used.

Further, the peeled portion 26 only needs to withstand current density and tensile strength, and therefore is formed by peeling on one side and performing peeling treatment on each winding 28 at the same time. The peeling process is performed at a position separated from the core block 2, with an isolation means installed between the core block 2 and the core block 2, in order to prevent dust and the like from adhering to the core block 2 due to the peeling process. .

Next, the wire 10 with the peeled portion 26 formed thereon is transferred to the reel 34.
The core block 2 is rotated by the rotation of the guide roller 38.
The feed is stopped at a position where the connecting piece 20 of the lead terminal 16 in the winding groove 4 between the terminal fixing parts 14 faces. In this state, as shown in Figure 3 (A),
The connecting piece 20 of the lead terminal 16 is set apart from the winding groove 4 and parallel to the wire rod 10. As a result, the wire rod 10
is not hindered by the connecting piece 20 and is smoothly transferred. Then, the connecting piece 20 of the lead terminal 16 can be reliably moved to the upper surface of the wire 10.

Next, the lead terminal 16 is rotated in the direction shown by the arrow f, and the connecting piece 20 is connected to the wire rod 10 as shown in FIG. 3(B).
move it to the top surface. As a result, the wire rod 10 is in the winding groove 4
and the connecting piece 20 and are temporarily fixed. This temporary fixing state is maintained by the wire rod 10 being bent and using the step portion 22 and the connecting piece 20, so that it becomes a relatively strong fixed state and can prevent the wire rod 10 from coming off until soldering.

Next, as shown in FIG. 3C, the connecting piece 20 and the wire rod 10 are electrically connected by a fixing means such as soldering. As a result of this connection, the starting end of the wire 10 can be fixed to the core block 2 through the lead terminal 16.

In this case, it goes without saying that the lead terminal 16 is fixed with a strength that can withstand the tension caused by the winding of the wire 10.
The connection piece 20 is prevented from rotating by being locked by the side wall portion of the stepped portion 22 .

Next, as shown in FIG. 3D, the starting end of the wire 10 connected to the connecting piece 20 is cut leaving a certain length. As a result, the unnecessary starting end side of the wire rod 10 is removed, and the laminated thickness of the winding wire 28 can be made uniform.

Next, as shown in FIG. 3(E), a tape-shaped first insulating paper is used as a comb-teeth-shaped insulating member to cover the soldering portion of the wire rod worker 0 corresponding to the interval between the winding grooves 4. 4Q is installed and the preparation for winding the wire rod 10 is completed.

By installing the insulating paper 40, electrical insulation between the wire rods 10 is achieved, and the reliability of the winding wire 28 is improved. and,
For the insulating paper 40, for example, by using insulating tape, automatic supply is realized and continuous insulation treatment is performed.
It helps automate the winding process.

Next, when the core block 2 is held in the same direction as the rotational direction of the reel 34 by, for example, a rotary chuck and rotated at a constant speed, each winding is formed in the winding groove 4 as shown in (F) in FIG. 28 are formed simultaneously and uniformly.

Next, the winding process for each winding 28 is performed by temporarily stopping the rotation with one turn less than the predetermined number of windings, and then adjusting the interval between the winding grooves 4 as shown in FIG. 4 (G). A tape-shaped second insulating paper 42 as a corresponding comb-shaped insulating member is installed from the opposite direction to the insulating paper 40 shown in FIG. 3(E).

By installing the insulating paper 42, electrical insulation between the wire rods 10 is achieved, and the reliability of the winding 28 is improved. Similarly to the insulating paper 40, the insulating paper 42 can be automatically supplied by using insulating tape, and can be continuously insulated to help automate the winding process. be.

Next, at the same time as the installation process of the insulating paper 42, at the position where the insulating paper 42 is to be placed in the waiting wire 10,
As shown in FIG. 4 (H), the rotary grindstone 36 is rotated and lowered in the direction of the arrow e to peel off the insulating film 24 and deposit the second ff1i gII2O on the terminal end side of the wire 10.
3. Formed in a certain range.

Next, when the core block 2 is rotated to perform one turn of winding, the peeling part 30 is installed on the upper surface of the insulating paper 42, as shown in H) in FIG. As shown in FIG. 5(J), a lead frame 32 as a connection auxiliary member made of a conductive metal plate is installed on the top surface of the lead frame 32, as shown in FIG. 5(J).

The lead frame 32, as shown in FIG. 6(A),
Arm portions 46 are formed at regular intervals on the sides of the band-shaped support portion 44, and a U-shaped connection end portion 50 is provided with a recess portion 48 for internally engaging the lead terminal 18 at the tip thereof.
is formed by integral molding. Therefore, the lead terminal 18 is inserted into the connection end 50 and engaged, and the lead arm 32 is fixed to the lead terminal 18.

After the lead frame 32 is fixed to the lead terminal 18 in this way, as shown in FIG. 5 (K), an electrical connection is made from the top surface by a connecting means such as soldering, and as shown in FIG. As shown in B), each arm portion 46 of the lead frame 32 is cut at its midpoint, and the connecting end portion 50 of each lead terminal 18 is made independent to achieve electrical insulation.

As mentioned above, after each process such as connecting the starting end of the winding 28, winding the winding 28, and connecting the terminal end of the winding 28,
A drive coil shown in FIG. 1(B) is thus formed.

Next, FIGS. 7 and 8 show other embodiments of the connection process of the terminal unit 12 and the starting end of the wire 10.

As shown in FIG. 7A, each terminal fixing portion 14 of the terminal unit 12 has a certain recess 21 formed at its lower end, and this recess 21 is opened toward the winding groove 4 side. The terminal fixing part 14 has a through hole 52 opened in the recess 21.
is formed, and the shaft portion of the lead terminal 16 is inserted into the through hole 52, so that the lead terminal 16 is inserted into the terminal fixing portion 14.
It is rotatably attached to the

Therefore, as shown in FIG. 7(B), the lead terminal 16
Wire rod lO with insulation coating 24 peeled off on the upper surface of connecting piece 20 of
After connecting the ends of the lead terminal 16 with solder or the like, rotate the J-de terminal 16 in the direction shown by the arrow g and install the lead terminal 16 inside the recess 21 as shown in FIG. 7(C). Can be done.

With this configuration, the wire 10 can be firmly fixed to the terminal unit 12 at the same time as the lead terminal 16 and the wire 10 are electrically connected, and the winding end treatment can be performed. Automation can be achieved.

Further, as shown in FIG. 8(A), the terminal unit 12
A T-shaped through hole 54 facing the stepped portion 22 of the winding groove 4 is formed in the terminal fixing portion 14 . A shaped shaft portion may be inserted and locked, and the connecting piece 20 may be made to face the stepped portion 22. In this way, (
After connecting the ends of the wire rod 10 with the connecting piece 20 pulled out from the stepped portion 22 as shown in FIG. 8(C), as shown in FIG.
As shown in FIG. 2, the connecting piece 20 can be installed with the wire 10 connected to the stepped portion 22 of the winding groove 4, and the wire 10 can be electrically connected to the lead terminal 16 as in the previous embodiment. By connecting, the wire rod 10 can be firmly fixed at the same time.

In the case of this embodiment, the lead terminal 18 can also be formed into an L-shape using a flat plate material like the lead terminal 16.

Next, FIG. 9 shows a method for processing the winding ends when the terminal unit 12 shown in FIG. 8 is used.

As shown in FIG. 9(A), in this terminal unit 12, the shaft portion of each lead terminal 18 has a plate shape.
If a connecting end portion 50 having a through hole portion 56 corresponding to this shaft portion is formed on the lead frame 32, the lead terminal 18 can be inserted into the through hole portion 56 as shown in FIG. 9(B). By locking and soldering, the terminal end of the winding 28 and the lead terminal 18 can be electrically connected and both can be firmly fixed. After the connection, by cutting the arm part 46, It is possible to electrically insulate each connection part.

Although the embodiments have been described using the drive winding of a wire dot printer as an example, the present invention can be used not only for such drive windings but also for various winding end treatments and terminal units. It is something.

〔Effect of the invention〕

According to the winding terminal unit of the present invention, the starting end side of the winding can be electrically connected and fixed to the first lead terminal, and the terminal end side of the winding can be connected to the second lead terminal. It can be electrically connected and fixed by intervening an auxiliary member, the connection form can be simplified, the winding end can be firmly fixed, and it can be easily connected to a wiring board etc. using a lead terminal independent from the winding. It is possible to automate the processing of winding ends.

Next, according to the winding end processing method using the terminal unit of the present invention, it is possible to simultaneously perform mechanical fixing by electrically connecting the starting end or the terminal end of the winding, thereby eliminating the need for taping. At the same time, since the insulating film for connection is peeled off during the winding process, the processing steps can be simplified and the winding end processing can be automated.

Further, according to the winding end processing method using the terminal unit of the present invention, the winding is wound after installing the insulating member on the upper surface of the connecting piece of the first lead terminal, so that the winding is insulated from the connecting piece. The reliability of the winding can also be improved.

According to the winding end processing method using the terminal unit of the present invention, since the connection between the winding end side and the second lead terminal is performed by the lead frame, the winding end side is processed. can be easily done.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a core block which is an embodiment of the winding terminal unit of the present invention, and FIG. 2 is a perspective view showing a processing device which is an embodiment of the winding end processing method using the terminal unit of the present invention. FIG. 3 is a partial perspective view showing processing on the starting end side of the winding, which is an embodiment of the winding end processing method using the terminal unit of the present invention, and FIGS. 4 and 5 are the embodiments of the present invention. A partial perspective view showing winding processing and termination side processing of a winding, which is an embodiment of a winding end processing method using the terminal unit;
FIG. 6 is a partial plan view showing specific processing on the terminal end side of the winding shown in FIG. 5, and FIGS. 7 and 8 show the terminal unit of the present invention and the winding end using the terminal unit. FIG. 9 is a partial perspective view showing another embodiment of the processing method, and FIG. 9 is a partial plan view showing a method of processing the winding ends using the terminal unit shown in FIG. 8. 2... Core block (member to be wound) 4... Winding groove 6... Yoke 10... Wire rod (flat wire rod) 12... Terminal unit I4... Terminal fixing part 16...・First lead terminal 18...Second lead terminal 20...Connecting piece 24...Insulating film 26...First peeling part 28...Winding 30...Second peeling Part 32...Lead frame (connection auxiliary member) 40...
First insulating paper (insulating member) 42... Second insulating paper (insulating member) Patent applicant Nippon Chemi-Con Co., Ltd. (A) Seal diagram (B) Winding diagram diagram

Claims (4)

[Claims] (1) A terminal fixing part formed across a winding groove of a member to be wound around which a winding is wound, and a connecting piece attached to this terminal fixing part and connecting the starting end of the winding. A terminal unit comprising: a first lead terminal installed in the winding groove; and a second lead terminal attached to the terminal fixing part and connected to the terminal end of the winding using a connection auxiliary member. (2) After fixing a terminal unit including a winding groove and first and second lead terminals to the member to be wound, the starting end of a continuous flat wire is guided into the winding groove of this terminal unit. and a step of peeling off the insulation coating on the starting end side of the flat wire in a specific range to form a first peeled part at the starting end of the flat wire; After forming a winding by winding the flat wire in the winding groove, peeling off the insulation coating on the terminal end side in a specific range, forming a second peeled part at the terminal end of the wire; interposing a connection auxiliary member between the second peeled part and the second lead terminal;
A method for processing winding ends using a terminal unit, comprising the step of connecting lead terminals. (3) The method for processing a winding end using a terminal unit according to claim 2, wherein the winding wire is wound after installing an insulating member on the connection piece of the first lead terminal. (4) The terminal unit according to claim 2, wherein the connection auxiliary member is formed by a lead frame corresponding to the second lead terminal, and is connected to and disconnected from the second peeling portion and the second lead terminal. A winding end treatment method using