JP4665078B2 - Resolver terminal pin structure - Google Patents

Description

  The present invention relates to a resolver terminal pin structure, and in particular, an upper portion of a terminal pin's bald portion is an upper portion of a terminal where press burrs are left at each corner portion, and a lower portion thereof is a curved surface having no press burrs. The coil wound portion is used to prevent the coil wound around the coil wound portion from being damaged or disconnected, and the coil after winding wound around the terminal upper portion is cut with a press burr at the corner. For new improvements.

Conventionally, as this type of resolver terminal pin structure that has been used, for example, as disclosed in Patent Document 1, a terminal pin that is not subjected to secondary processing while being pressed is used. It was.
That is, this terminal pin has the configuration shown in FIGS. 4 to 6, and a plurality of terminal pins 2 are formed in the terminal holding portion 1 formed in the terminal holding portion 1 in the terminal holding portion made of resin indicated by reference numeral 1. 3 without being inserted into the terminal 3 or using the terminal hole 3, the terminal holding part 1 and resin integral molding by insert molding.

As shown in FIGS. 5 and 6, each terminal pin 2 is formed into a quadrangular prism shape by pressing so as to have four corner portions 4.
Each terminal pin 2 is constituted by a curled portion 6 around which a coil 5 is wound, and the corner portion 4 is constituted in a state where a press burr 4a formed at the time of pressing is left.

  When the terminal pin 2 in the above-described state is used, the end line of the coil 5 wound around the stator iron core (not shown) is wound from the lower part 6a of the curled portion 6, wound upward, and the upper part 6b When the winding machine applies tension to the coil 5, the coil 5 comes into strong contact with the press burr 4 a at the corner 4, and the coil 5 is cut by contact with the press burr 4 a.

US Pat. No. 6,028,383

Since the conventional resolver terminal pin structure is configured as described above, the following problems exist.
That is, since the entire corners from the lower part to the upper part of the curled part are not subjected to secondary processing, the press burr remains, so that the corners are pressed during winding by the automatic winding machine. Strong contact with burrs could cause damage or disconnection, which hindered productivity.

  The resolver terminal pin structure according to the present invention is a resolver terminal pin structure in which a plurality of terminal pins are provided in a terminal holding portion made of a resin, and a coil is wound around the pinned portion of the terminal pin. Is formed of a quadrangular prism, and the upper part of the curled part is formed with an upper part of the terminal where the press burr is left in each first angular part, and the coil winding formed downward from the upper part of the terminal of the curled part Each of the second corners of the part has a configuration in which the press burr is removed and formed into a curved surface, and the coil is wound around the terminal after being wound from the coil winding part. The terminal pin is formed by pressing, and the curved surface is formed by dipping the press burr.

Since the resolver terminal pin structure according to the present invention is configured as described above, the following effects can be obtained.
In other words, the curled portion of the terminal pin is divided into an upper portion of the terminal and a coil winding portion, the corner portion at the upper portion of the terminal is left with a press burr, and the corner portion of the coil winding portion is a curved surface obtained by dipping the press burr. Therefore, the winding of the coil around the coil winding portion is performed without being damaged or disconnected, and a press burr remains at the corner at the top of the terminal at the end of the winding. Similarly to the above, the coil cutting process after coil winding is smoothly performed, and the productivity can be improved.

  In the present invention, the upper part of the curled portion of the terminal pin is an upper portion of the terminal where the press burr is left at each corner, and the lower portion is a coil winding portion where each corner is a curved surface without the press burr. To provide a terminal pin structure for a resolver that prevents the coil wound around the attaching part from being damaged or disconnected and cuts the coil wound around the upper part of the terminal with a press burr at the corner. With the goal.

Hereinafter, preferred embodiments of a resolver terminal pin structure according to the present invention will be described with reference to the drawings.
Note that the same or equivalent parts as in the conventional example will be described using the same reference numerals.
In FIG. 1, what is indicated by reference numeral 1 is a terminal holding portion made of resin, and a plurality of terminal pins 2 are inserted into the terminal holes 3 formed in the terminal holding portion 1, or Without using the terminal hole 3, the terminal holding part 1 and the resin integral molding by insert molding are used.

As shown in FIGS. 2 and 3, each terminal pin 2 is formed into a quadrangular prism shape as a whole, and has four first and second corner portions 4, 4 </ b> A by press working. Is formed.
Each terminal pin 2 is composed of a curled portion 6 for winding the coil 5, and the curled portion 6 includes an upper terminal upper portion 6A and a coil winding portion formed at the lower portion of the terminal upper portion 6A. 6B.

  The terminal upper portion 6A is configured in a state in which the terminal pins 2 are formed by pressing, that is, the first corner portions 4 have a press burr 4a.

  The coil winding portion 6B has four second corner portions 4A, and each of the second corner portions 4A uses a second tool or a device (not shown) for the press burr 4a, or At the time of mass production, the curved surface 4Aa is formed by crushing in a press.

Next, the case where the coil 5 is wound around the terminal pin 2 in the above-described configuration will be described.
First, as shown in FIG. 3, the end line of the coil 5 wound around the stator core (not shown) is wound from the coil winding portion 6B on the lower portion 6a side of the bent portion 6, and gradually. Winding upward, it is wound around the terminal upper part 6A on the upper part 6b side.

  Accordingly, in the coil winding portion 6B where the coil 5 is wound first, each second corner portion 4A is formed by the curved surface 4Aa. Therefore, the coil 5 is smoothly wound at a high speed without being damaged or disconnected. Attached.

  The coil 5 that has been wound by the coil winding portion 6B is continuously wound around the terminal upper portion 6A. This terminal upper portion 6A has a length of about 1/3 that of the coil winding portion 6B. Therefore, with the coil 5 wound several times, the winding arm of the automatic winding machine gives a pulling action to the coil 5, and the coil 5 is cut by the press burr 4 a of the first corner 4. .

  With the above operation, the winding operation of the coil 5 around one terminal pin 2 is completed, and the above-described winding operation is performed on each terminal pin 2 provided in the terminal holding portion 1 of a well-known resolver (not shown). By doing so, the winding of the end wire of the coil 5 to each terminal pin 2 is completed.

  As described above, after the winding of the coil 5 to each terminal 2 is completed, the terminal 2 is welded to the upper part of the terminal upper part 6A and the coil winding part 6B by welding means such as TIG welding. 5 is integrated with the terminal pin 2.

  The coil 5 of the coil winding portion 6B is welded at the upper part, but the lower part is not welded to the terminal pin 2, and the remaining coil 5 is configured to have an elastic action of a coil spring. The impact can be absorbed by this elastic action, and disconnection of the coil 5 can be prevented. In addition, the portion of the tip where the coil 5 is damaged by the burr of the terminal is completely melted by TIG welding or the like (for the purpose of connecting the coil 5 to the terminal), so that the quality deterioration can be completely prevented.

  The present invention is not limited to a resolver, and can be applied to devices including terminals such as a motor.

It is a perspective view which shows the terminal pin structure for resolvers by this invention. It is an expansion perspective view which shows the terminal pin of FIG. FIG. 3 is a perspective view of a state where a coil is wound around the terminal pin of FIG. 2. It is a perspective view which shows the conventional terminal pin structure for resolvers. It is an expansion perspective view which shows the terminal pin of FIG. FIG. 6 is a perspective view of a state where a coil is wound around the terminal pin of FIG. 5.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Terminal holding part 2 Terminal pin 4 1st corner | angular part 4a Press burr 4A 2nd corner | angular part 4Aa Curved surface 5 Coil 6 Curled part 6A Terminal upper part 6B Coil winding part

Claims (3)

In a terminal pin structure for a resolver in which a plurality of terminal pins (2) are provided in a terminal holding portion (1) made of resin, and a coil (5) is wound around a fold portion (6) of the terminal pin (2). ,
The curled portion (6) has a quadrangular prism shape, and an upper terminal portion (6A) in which a press burr (4a) is left on each first corner portion (4) is formed on the upper portion of the curled portion (6). Each of the second corners (4A) of the coil winding part (6B) formed downward from the terminal upper part (6A) of the curled part (6) is curved with the press burr (4a) removed. (4Aa) A resolver terminal pin structure characterized by being formed into (4Aa).   The resolver terminal pin according to claim 1, wherein the coil (5) is wound around the terminal upper portion (6A) after being wound from the coil winding portion (6B). Construction.   The resolver terminal according to claim 1 or 2, wherein the terminal pin (2) is formed by pressing, and the curved surface (4Aa) is formed by immersing the press burr (4a). Pin structure.

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