JPH07203647A - Manufacture of clamp - Google Patents

Abstract

PURPOSE:To prevent a dipping agent from being collected on the inside of a U-bend when a plate member is coated with an insulating film through dipping. CONSTITUTION:When a clamp comprising a plate member 11 having a U-bend 14 and an insulating film applied to the surface of the plate member 11 and clamping a lead wire in front and rear of the ridge of U-bend is manufactured, a hole 15 is made in the U-bend 14 along the ridge thereof before the plate member 11 is immersed into a liquid of dipping agent composed of an insulating resin. The hole 15 is then immersed into the liquid of dipping agent 16 along with the U-bend 14 and an insulating film is formed under a state where the hole 15 is closed by the dipping agent 16. Since the dipping agent pulled into the hole due to the surface tension, the insulating film is formed uniformly. Consequently, the volume on the inside of clamping part can be increased in the plate member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a clamping device, and more particularly, to an improvement of a method of manufacturing a clamping device in which a steel material is coated with an insulating film.
The present invention relates to a method of manufacturing a clamping device which is effective for holding a plurality of lead wires connected to an electromotive coil of a magneto generator.

[0002]

2. Description of the Related Art As an electron generator of a magneto-generator, a coil wire of an electron-generating coil is wound around each salient pole portion of a core made of a magnetic material, and a terminal portion of the wire rod of these coils is pulled out to form a terminal member. In the terminal member, a plurality of lead wires are electrically connected to each other, and the lead wires are bound together by a clamping device and fixed to the base. is there.

In such a case, a plate material formed of steel into a substantially rectangular plate shape is bent at an acute angle in the middle of the plate material U
A clamping device having a bent portion is used. However, in such a clamping device, since the plate material is exposed as it is, the plate material of the clamping device is engaged with the lead wire at the time of clamping, and the lead wire and the plate material of the clamping device are electrically connected. There is danger.

Therefore, conventionally, as shown in FIG. 11, the insulating film 2 is coated on the surface of the plate material 1 by a depping (immersion) process using polyvinyl chloride (PVC, so-called vinyl chloride). The following clamping device is used.

[0005]

However, PV is used as the plate material.
When the plate material is bent after coating the C film,
Since there is a risk that the coating film is damaged, the plate material is coated with a PVC film after bending the plate material.

In this case, as shown in FIG.
A puddle 2a of the PVC film 2 is easily formed inside the U-shaped bent portion of the plate material 1, the inner volume of the clamp portion for holding the lead wire 3 is reduced, and the lead wire 3 can be completely clamped. There is a danger of disappearing.

An object of the present invention is to provide a method of manufacturing a clamp device capable of preventing the material of the insulating film from accumulating inside the bent portion of the plate material when the plate material is subjected to a treatment for coating the insulating film. To do.

[0008]

In the method for manufacturing a clamping device according to the present invention, a plate material (11, 31) is bent at an acute angle to form a U-shaped bent portion (14, 34). At least a U-shaped bent portion (14, 34) of the plate material (11, 31) is made of an insulating resin.
(6, 36), and the insulating film (1
A method for manufacturing a clamping device in which the plate material (11, 31) is coated with U, before the plate material (11, 31) is dipped in the liquid of the depping agent (16, 36). Holes (15, 35) are formed in the bent portion (14, 34) along the ridgeline, and the holes (1
5, 35) was depped in the liquid of the depping agent (16, 36) together with the U-shaped bent portions (14, 34), and the depping agent (16, 36) closed this hole (15, 35). The insulating film (17, 37) is formed in this state.

[0009]

According to the above-described method for manufacturing the clamping device, after the plate material is bent at an intermediate portion of the plate material, the plate material is subjected to the depping process for coating the insulating film with the insulating film. Excess depping agent gathers inside the inside of the plate, but this depping agent is drawn into the holes of the plate material due to its surface tension and is stored inside the holes. The insulating film is uniformly coated. That is, the depping agent is prevented from accumulating inside the bent portion of the plate material.

[0010]

1 is a sectional view showing a clamping device manufactured by a method for manufacturing a clamping device according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the depping process.

In the present embodiment, in the method for manufacturing a clamping device according to the present invention, a plate material 11 as a main body, which is formed into a substantially rectangular plate shape by pressing using a steel material, is prepared. A bent portion 12 for fixing is formed at one end of the plate member 11, and a claw portion 13 is formed at the other end thereof. Then, the plate material 11 is bent at an acute angle in a substantially middle portion to form a U-shaped bent portion (hereinafter, referred to as a bent portion) 14. An elongated hole 15 extending along the longitudinal direction of the plate member 11 is formed substantially in the middle of the bent portion 14. This long hole 1
5 is formed as an accommodating portion for accommodating PVC as a depping agent that collects inside the plate material 11 at the time of a depping process described later. At this time, the size is set so that the depping agent can be held in a connected state.

After the bent portion 14 is formed in the elongated hole portion 15 of the plate material 11 by bending, as shown in FIG. 2, PVC 16 is used as a depping agent in the portion except the bent portion 12 of the plate material 11. Plate material 11 that has been subjected to depping processing
The surface of the is coated with a PVC film 17 as an insulating film. At this time, the excess PVC depping agent 16 gathers inside the bent portion 14, but since the PVC depping agent 16 is accommodated in the elongated hole 15 in a crosslinked state, the claw portion 13 is provided around the plate member 11. PV from the side to the bent portion 12 side
The C film 17 is coated with a uniform thickness.

That is, as shown in FIG. 2, the bent portion 12 is gripped by hand or by a suitable gripping means (not shown), and the plate material 11 is dipped in the liquid of the PVC depping agent 16. After that, when pulled up from the liquid, the plate material 1
PVC depping agent 16 on the surface of
Because of its adhesiveness, the PVC film 17 adheres to the surface of the immersion area of the plate material 11. At this time, since the PVC depping agent 16 has an appropriate viscosity, the PVC depping agent 16 that has penetrated into the long holes 15 becomes a crosslinked state due to its surface tension, and the long holes 15 are filled without breaks. Moreover, a film having a substantially constant thickness is formed. That is, the resin that closes in the U-shape of the bent portion 14 is pulled by the surface tension of the resin that closes the elongated hole 15 in a bridged state, and the film inside the U-shaped portion of the bent portion 14 is pulled. The thickness can be reduced. As a result, the inner volume of the clamping portion of the plate material can be increased.

Next, a method of using the clamping device thus manufactured, and its operation and effect will be described. As shown in FIG. 1, when the lead wire 3 is clamped by the clamping device 10, the lead wire 3 is first inserted between the bent portions 14. continue,
The lead wire 3 is clamped by squeezing the space between the bent portions 14 by caulking. When the bent portion 14 is caulked, the bending rigidity of the bent portion 14 is reduced because the elongated hole 15 is formed in the bent portion 14, so the caulking is easy with a small force. And, it can be carried out with high accuracy.

Since the PVC film 17 is coated on the surface of the plate member 11 with a uniform thickness by the elongated hole 15, the lead wire 3 is clamped with a uniform force over the entire clamping region. Further, at the clamping portion, the plate material 11 is covered with the PVC film 17 as an insulating film without exposing the surface thereof, so that the electrical insulation state between the plate material 11 and the lead wire 3 is reliably maintained. . Therefore, a very good clamping state is secured mechanically and electrically.

FIGS. 3, 4 and 5 are perspective views respectively showing modified examples of the holes. FIG. 3 shows an embodiment applied as a clamping device when the width of the plate material is wide. A plurality of elongated holes 15 as accommodating portions are formed side by side in parallel with each other in the bent portion of the wide plate material 11A. ing.

According to this embodiment, even if the adhesion amount of the PVC depping agent increases due to the increase of the area in the wide plate material 11A, it can be sufficiently absorbed by the plurality of elongated holes 15, and Since the increase in the opening width of the long hole 15 is suppressed, the crosslinked state of the PVC film depending on the surface tension of the PVC depping agent is formed properly and uniformly.

In the embodiment shown in FIG. 4, a curl portion 18 as an auxiliary accommodating portion is arranged on the short side of the elongated hole 15 and is rounded to the back (outer) side of the bent portion 14. Has been done.

Further, in the embodiment shown in FIG. 5, the curl portion 19 is arranged on the long side of the long hole 15 and is similarly rounded.

According to these embodiments, since the PVC depping agent contained in the long holes 15 is sucked into the hollow portions of the curl portions 18 and 19 respectively arranged on the edges of the long holes, the long hole 15 is removed. PV with tension inside
The C film will be robustly formed.

FIG. 6 is a plan view showing an embodiment of a manufacturing method of a clamping device for holding a lead wire in the electron emission of a magnet generator, and FIG. 7 is a side sectional view taken along the line VII-VII of FIG. 8 is a plan view showing a plate material used in the clamping device, FIG. 9 is a developed view thereof, and FIG. 10 is an enlarged partial sectional view showing the depping process.

In this embodiment, the generator 2 of the magnet generator is used.
No. 0 is configured to be concentrically arranged inside a rotor (not shown) in a rotor outer rotor type magnet generator and to be installed in a machine frame (not shown) or the like, and includes a core 21. ing. The core 21 is formed by stacking a plurality of steel plates and integrating them, and includes a base portion 22 formed in a substantially annular shape.
A plurality of T-shaped salient pole portions 23 are radially arranged (star-shaped) on the outer periphery of the base body portion 22 at substantially equal intervals in the circumferential direction. The core 21 has a bobbin 2 made of an insulating resin.
4 is the head 2 of each salient pole portion 23 from the outer periphery of the core base portion 22.
5 is coated so as to cover the inner circumference.

An electromotive coil 26 is wound around each salient pole portion 23 of the core 21. That is, each electronic generating coil 26 is configured by winding a coil wire (not shown) made of a wire made of a conductive material such as copper around the salient pole portion 23 via the bobbin 24. . This group of electromotive coils 26 is electrically connected to a plurality of terminal members (not shown) which are insulated and fixed to the core base portion 22 at their respective terminal portions (winding start terminal portion, winding end terminal portion). It is connected to the. Lead wires 27 are mechanically and electrically connected to these terminal members by an appropriate means such as soldering. The lead wires 27 are bound to the tube 28 in units of a plurality of core wires 21. It is properly wired along.

In the present embodiment, the clamping device 30
Is integrally formed with a substantially annular base 29, and the base 2
It is configured to be fixed to the core base portion 22 by a bolt inserted into a mounting hole 29a formed in the base plate 9. The clamping device 30 is provided with four plate members 31 formed in a substantially rectangular plate shape, and the plate members 31 are arranged at four positions on the base 29 and are radially provided. A bent portion 32 is formed at one end of each plate member 31, and a claw portion 33 is formed at the other end thereof. In the vicinity of the tip of each plate 31, long holes 35 are arranged and opened so as to extend in the longitudinal direction.

Then, each plate member 31 is bent to form a bent portion 34 at the position of the long hole 35, and thereafter, the PV
The surface of the plate material 31 from the bent portion 32 to the claw portion 33 is PVC-coated by the depping process using the C depping agent 36.
Membrane 37 is coated. Also in this case, the PVC film 37 is coated in the elongated hole 35 in a continuous state, and the depping agent 36 gathering inside the bent portion 34 of the plate member 31 is accommodated in the elongated hole 35.
Since the C film 37 is coated with a uniform thickness, the depping agent 36 is prevented from accumulating inside the bent portion 34.

[0026]

As described above, according to the present invention,
Since the hole for accommodating the depping agent that collects inside the plate material is formed in the bent portion of the plate material, and the depping agent is coated around the plate material according to the shape of the plate material, the inside of the bent portion of the plate material during the depping process is performed. By preventing the depping agent from accumulating on the inner surface of the U-shaped bent portion, the inner volume of the clamping portion of the plate material can be increased and the clamping function can be improved by the coating process. It can be prevented from being lowered.

[Brief description of drawings]

FIG. 1 is a sectional view showing a clamping device manufactured by a method for manufacturing a clamping device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the depping process step.

FIG. 3 is a perspective view showing a modified example of a hole.

FIG. 4 is a perspective view showing a modified example of a hole.

FIG. 5 is a perspective view showing a modified example of a hole.

FIG. 6 is a plan view showing an example of a method of manufacturing a clamping device that holds a lead wire in an electron emission of a magnet generator.

FIG. 7 is a side sectional view taken along the line VII-VII of FIG.

FIG. 8 is a plan view showing a plate member used in the clamping device.

FIG. 9 is a development view thereof.

FIG. 10 is an enlarged partial cross-sectional view showing the depping process step.

FIG. 11 is an enlarged partial sectional view showing a conventional example.

[Explanation of symbols]

10, 30 ... Clamping device, 11, 31 ... Plate material, 1
2, 32 ... Bent portion, 13, 33 ... Claw portion, 14, 34 ... Bent portion, 15, 35 ... Long hole (accommodating portion), 16, 36 ... PV
C depping agent, 17, 37 ... PVC film (insulating film), 2
0 ... Electron generator of magnet generator, 21 ... Core, 22 ... Base part,
23 ... salient pole part, 24 ... bobbin, 26 ... electronic coil,
3, 27 ... Lead wire (clamped wire material), 28 ... Holder, 29 ... Base.

Claims (1)

[Claims] 1. A U-shaped bent portion (1) bent at an acute angle.
4, 34) having a plate material (11, 31) and an insulating film (1) coated on the surface of the plate material (11, 31).
7, 37) and the clamped wire (3,
27) A method of manufacturing a clamping device configured to sandwich the U-shaped bent portion (14, 34) before and after the ridgeline of the U-shaped bent portion (14, 34) for clamping, and plate members (11, 31) are bent at an acute angle. After the U-shaped bent portions (14, 34) are formed by the
A clamping device in which at least the U-shaped bent portions (14, 34) of (31) are dipped in a liquid of a depping agent (16, 36) made of an insulating resin to coat the insulating films (17, 37). The manufacturing method of the plate material (11, 31) is the depping agent (16, 3).
Before being dipped in the liquid of 6), the plate material (11,
In the U-shaped bent portion (14, 34) of (31), a hole (15, 35) is opened along the ridgeline of the bent portion (15, 3).
5) is dipped in the liquid of the depping agent (16, 36) together with the U-shaped bent portion (14, 34), and the depping agent (16, 36) is formed in the hole (15, 35).
The method for manufacturing a clamping device, wherein the insulating film (17, 37) is formed in a state where the clamping film is closed.