JPH0721075Y2 - Connection device for laminated motor drive coil - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a connection device for a laminated motor drive coil, and more particularly, to a laminated motor drive coil that facilitates connection work of electrodes in a spiral pattern. Connection device.

[Prior Art] Conventionally, a connecting device for a laminated type motor drive coil of this type will be described with reference to FIGS. In the figure, (B) is a coil substrate, which is a spiral pattern (1a) (1a) ...
(2a) (2a) ..., (3a) (3a) ..., (4a) (4a) ... 4 layers of lead frame (1) (2) (3) (4)
Are formed by stacking. The lead frame (1)
(2), (3) and (4) are insulators (5) which are formed by inverting the spiral direction of each layer and have adhesiveness.
(5) are laminated by thermocompression bonding. Further, the insulators (5), (5) ... Are the spiral patterns (1a).
(1a) ..., (2a) (2a) ..., (3a) (3a) ..., (4a)
(4a) ... Electrodes (1b) (1b) ..., (2b) (2b) ..., (3
b) Holes (H) (H) ... Are opened at positions corresponding to (3b) ..., (4b) (4b). The electrode (1b) (1b)
…, (2b) (2b)…, (3b) (3b)…, (4b) (4b)…
Are adjacent electrodes (1b) (1b) ..., (2b) (2b) ...,
(3b) (3b) ..., (4b) (4b) ... are connected to form drive coils (6) (6). That is, the electrodes (1b) (1b) ... and the electrodes (1b) (1b) ... provided on the inner peripheral side of the spiral pattern (1a) (1a) ... Second layer spiral pattern (2a) (2
The electrodes (2b) (2b) of a) ... Are connected. Also, the third
On the inner peripheral side of the spiral patterns (3a) (3a) of the first layer, the electrodes (1b) (1b) of the first and second layers,
The electrodes (3b), (3b) ... Are provided at positions different from those of (2b), (2b). Then, electrodes (4b) (4b) ... are formed on the fourth layer spiral patterns (4a) (4a) ... at positions corresponding to the electrodes (3b) (3b). ... and the electrodes (4b) (4b) ... are connected. On the other hand, the spiral patterns (2a) (2a) ... And the spiral patterns (3a) (3a) ... Of the third layer are the spiral patterns (2a) (2a) ... (3a). (3a) ... are connected at appropriate positions (7), (7) ... Thus, the respective spiral patterns (1a) (1a) ..., (2a) (2a) ...,
(3a) (3a) ..., (4a) (4a) ... are connected to form drive coils (6) (6). These electrodes (1b) (1
b) ..., (2b) (2b) ..., (3b) (3b) ..., (4b) (4
b) are connected by spot welding (electric welding) at the holes (H) (H) of the insulators (5) (5) ..., but may be connected by welding solder.

[Problems to be Solved by the Invention] As shown in FIG. 4, the above-mentioned conventional type has electrodes (1b) (1b)
…, (2b) (2b)…, (3b) (3b)…, (4b) (4b)…
Was held by the insulators (5), (5) ...
However, the electrodes (1b) (1b) ..., (2b) (2b) ...,
Holes (H) (H) for welding are opened in the insulators (5), (5), ... at the positions of (3b), (3b), ..., (4b), (4b). Therefore, these electrodes (1b) (1b) ..., (2b)
Since (2b), (3b), (3b), ..., (4b), (4b) ... are supported at their peripheral edges, their supporting force is weak, and the electrodes (1b), (1b) ... , (2b) (2b) ..., (3b) (3b)
..., (4b), (4b) ... and the peripheral part and the vertical direction are hollow, so these electrodes (1b) (1b) ..., (2b) (2b)
The supporting pressure was extremely weak even when crimping…, (3b), (3b),…, (4b), (4b)…. Therefore, the electrode (1b) (1b)
…, (2b) (2b)…, (3b) (3b)…, (4b) (4b)…
When connecting the electrodes by spot welding or soldering, the electrodes (1b) (1b) ..., (2b) (2b) ..., (3b) (3b) ...,
(4b) (4b) may be deformed due to twisting or the like, or may be detached and rocked from a predetermined position, which makes the connection work difficult and hinders the productability and productivity of the motor. I was coming.

Therefore, technical problems that should be solved in order to overcome these defects, prevent deformation and swinging of the electrode, facilitate the electrode connection work, and improve productability and productivity will arise. The present invention aims to solve the problem.

[Means for Solving the Problems] This invention has been proposed in order to achieve the above-mentioned object, and forms a lead frame provided with a spiral pattern by etching a thin metal plate such as copper. A coil substrate is formed by laminating a plurality of lead frames each having a spiral pattern symmetrically formed through an insulator, and forming a hole in the insulator at a position corresponding to the opposing electrode of the spiral pattern. In a laminated motor drive coil formed by drilling and connecting the electrodes facing each other through the hole by spot welding or soldering, one electrode is provided at a position corresponding to the electrode Extending from the position of the hole opened in the body to a position before the hole opened in the insulator provided at a position corresponding to another electrode having a different position, and further through the insulator. Each A connecting device for a laminated motor drive coil, characterized in that electrodes are overlapped and pressure-bonded and laminated, and each electrode is connected through the hole by the spot welding or soldering. It is a thing.

[Operation] According to the present invention, one electrode of the spiral pattern of each layer is aligned with another electrode whose position is different from the position of the hole opened in the insulator provided at the position corresponding to the electrode. Since the electrode is extended to a position before the hole opened in the insulator provided at the position, and the respective electrodes are superposed and pressure-bonded through the insulator, the electrode of the insulator sandwiching the electrode The supporting area for the electrode is increased, and the supporting force of the electrode is significantly improved. Further, since there is no cavity in the vertical direction of the portion where the electrodes of the coil substrate are superposed, the respective electrodes can be densely pressure-bonded.

Therefore, since each electrode is firmly supported and the pressure on the electrode increases, the stress of the electrode is significantly improved, and the electrode is not deformed or rocks even if spot welding or soldering is applied. There is no.

[Embodiment] An embodiment of the present invention will be described in detail below with reference to FIGS. 1 and 2 of the attached drawings. For convenience of explanation, technical matters that are publicly known in the related art will be described at the same time, and the same reference numerals will be used for the conventional and symmetric components.

In the figure, (B) is a coil substrate, and a spiral pattern (1a) (1a
a) ..., (2a) (2a) ..., (3a) (3a) ..., (4a) (4
a) ... 4 layers of lead frame (1) (2)
It is formed by stacking (3) and (4). The lead frames (1), (2), (3) and (4) are formed in each layer with the spiral directions reversed, and the insulators (5) (5) ... And then stacked.
And each spiral pattern (1a) (1a) ...,
(2a) (2a) ..., (3a) (3a) ..., (4a) (4a) ... are connected to form drive coils (6) (6). That is, holes (H1) (H1) for welding are opened in the insulators (5) (5) at one end portion on the inner peripheral side of the drive coils (6) (6).
Further, a welding hole (H2) (H2) ... is drilled in the other end portion. And the spiral pattern (1a) of the first layer
The electrodes (1a), (1b), (1b), and the second layer spiral patterns (2a), (2a), ..., The electrodes (2b), (2b), ... Are the insulators (5), (5) ,. Holes (H1) (H1) of the third layer, and the spiral patterns (3a) (3a) of the third layer and the electrodes (3b) (3b) of the third layer and the spiral of the fourth layer. -Shaped patterns (4a) (4a) ... Electrodes (4b) (4b) ...
And are formed at positions corresponding to the holes (H2) (H2) of the insulators (5) (5). After that, the lead frames (1), (2), (3), (4) and the insulators (5), (5), ... Are sandwiched and laminated and pressure-bonded. Then, spot welding or soldering is applied to the insulators (5) (5) ... (H1) (H1) ...
a) (1a) ... Electrodes (1b) (1b) ... And the second layer spiral patterns (2a) (2a) ... Electrodes (2b) (2b). Also, the holes (H2) of the insulators (5) (5) ...
(H2) ... Spot welding or soldering is applied to the third layer spiral pattern (3a) (3a) ... Electrode (3b)
(3b) ... and the fourth layer spiral pattern (4a)
Connect the electrodes (4a) ... to the electrodes (4b) (4b). Further, the spiral-shaped patterns (2a) (2a) ... And the spiral-shaped patterns (3a) (3a) ... (Third layer) of the second layer are respectively spiral patterns (2a) (2a). 3a) (3a)
The lead frame (2) and the lead frame (3) are connected at appropriate positions (7), (7) on the outer peripheral side of the ...

Thus, the drive coils (6) (6) ... Are formed, but the electrodes (1b) (1b) ... Of the spiral patterns (1a) (1a) ... of the first layer are insulators (5) ( 5) ... hole (H1)
From the position corresponding to (H1) ..., the insulator (5) (5) ...
The hole (H2) (H2) ... is extended to a position before this.
And the spiral pattern (2a) (2a) of the second layer
The electrodes (2b), (2b), ... Of the electrodes are formed at positions corresponding to the electrodes (1b), (1b), ... And have substantially the same shape.
Further, the electrodes (3b) (3b) of the third layer spiral pattern (3a) (3a) ... are aligned with the holes (H2) (H2) of the insulators (5) (5). It is extended to a position before the twist holes (H1) (H1) .... Furthermore, the electrodes (4b) (4b) of the fourth layer spiral pattern (4a) (4a) ...
Is a position corresponding to the electrodes (3b) (3b) ...
Further, the electrodes (3b), (3b), ... Are formed in substantially the same shape.

Then, the lead frames (1), (2), (3), (4) and the insulators (5), (5), and so on are sequentially sandwiched and laminated, and further thermocompression-bonded to the coil substrate (B). To form
As shown in FIG. 2, the insulators (5), (5) ... Respectively have electrodes (1b) (1b) ..., (2b) (2b) ..., (3b) (3b) ...
(4b) will have a supporting area for (4b) ...
The electrodes (1b) (1b) ..., (2b) (2b) ..., (3b) (3b)
, (4b), (4b), are firmly supported, and the electrodes (1b), (1b), ..., (2b), (2b) of the coil substrate (B) are also supported.
..., (3b) (3b), ..., (4b) (4b) ... have no cavities in the vertical direction at the position where they are superposed, and the electrodes (1b) are densely packed.
(1b) ..., (2b) (2b) ..., (3b) (3b) ..., (4b)
(4b) ... is crimped.

Therefore, the respective electrodes (1b) (1b) ..., (2b) (2b) ...,
(3b), (3b) ..., (4b), (4b) ... do not deform or swing even if spot welding or soldering is applied.

It should be noted that this invention can be modified in various ways without departing from the spirit of this invention, and it goes without saying that this invention extends to the modified version.

[Advantages of the Invention] The invention is such that one electrode of the spiral pattern of each layer is different from another electrode whose position is different from the position of the hole formed in the insulator provided at the position corresponding to the electrode. Extending to the position before the hole opened in the insulator provided at the matching position, and stacking each electrode through the insulator and pressure-bonding, so that this electrode of the coil substrate is stacked There is no cavity above and below the combined parts, and each electrode is firmly pressure-bonded. In addition, the insulator increases the support area for the electrodes, and reliably supports each electrode. Therefore,
Since the stress of the electrode is remarkably improved and the electrode is not deformed or rocks even if spot welding or soldering is applied to the electrode, the electrode can be easily connected, so that the workability and the productivity are improved. It is possible to improve not only the product quality but also the productability.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a plan view of a coil substrate, FIG. 2 is a partially cutaway vertical sectional view taken along the line AA of FIG. 1, and FIGS. FIG. 3 is a plan view of the coil substrate, and FIG. 4 is a partially cutaway vertical sectional view taken along line BB of FIG. (1) (2) (3) (4) ...... Lead frame (1a) (2a) (3a) (4a) ...... Spiral pattern (1b) (2b) (3b) (4b) ...... Electrode (5) ) …… Insulator, (6) …… Drive coil (B) …… Coil board

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliographic references Sho 61-123649 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A thin metal plate made of copper or the like is etched to form a lead frame having a spiral pattern, and a plurality of lead frames each having a symmetrical spiral pattern are laminated via an insulator. A coil substrate is formed, a hole is opened in the insulator at a position corresponding to the opposing electrode of the spiral pattern, and the opposing electrodes are connected by spot welding or soldering through the hole. In the laminated motor drive coil composed of, one electrode is moved from the position of the hole opened in the insulator provided at the position corresponding to the electrode to the position corresponding to the other electrode having a different position. The insulator is provided so as to extend to a position before the opened hole, and further, the respective electrodes are superposed and pressure-bonded through the insulator, and each electrode is spot-welded through the hole. Or with solder Connecting device Laminated motor driving coils, characterized by being configured to be connected with.