Winding structure for terminal pins

Abstract

To provide means of preventing a winding of a tie-up from being fallen and disconnected.SOLUTION: In a tie-up construction of a winding to a terminal pin so as to tie-up a winding 12 to a terminal pin 2 of a resolver, a projection part 10 which is formed to an outer peripheral surface 2a of the terminal pin 2, and is projected from the outer peripheral surface 2a to an outer side. The winding 12 tie-upped to the outer peripheral surface 2a has a construction that it is tie-upped over the projection part 10. Also, the terminal pin 2 has a cross section shape, and forms a circle or a square, and the projection part 10 has a construction that is formed to both sides or a whole periphery of the outer peripheral surface 2a. Also, in one part of the outer peripheral surface 2a of the terminal pin 2, a groove 4 is formed so as to be continued to the projection part 10, and the projection part 10 forms a trapezoid in view of an outline.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a structure for fastening a winding to a terminal pin, and in particular to a new improvement in which a protrusion is formed on the terminal pin, and the winding is held beyond the protrusion, thereby preventing the winding from falling off the terminal pin. [Background technology]

[0002] As an example of a conventional structure for tying a winding to a terminal pin of this type, the conventional structure disclosed in Patent Document 1 can be given as shown in FIGS. That is, what is indicated by the symbol 1 in FIG. 10 is a terminal pin holding portion, and a terminal pin 2 is insert-molded into this terminal pin holding portion 1, and the outer surface 2a of the terminal pin 2 has a wound winding 12 bound to the magnetic poles of an annular stator (not shown).

[0003] At a position on the tip end side 2A of the outer peripheral surface 2a of the terminal pin 2, a groove 4 is formed in a part of the outer peripheral surface 2a. The winding 12 wound around the outer peripheral surface 2a is wound in the groove 4, as shown in Figures 10 and 11, and then wound several times before winding around the terminal pin 2 is completed. Next, the winding 12 on the terminal pin 2 after the winding 12 has been completed is fixed to the outer peripheral surface 2a at the tip side 2A of the terminal pin 2 by welding or soldering, thereby completing the winding of the winding 12. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-129313 Summary of the Invention [Problem to be solved by the invention]

[0005] The conventional structure for tying the winding to the terminal pin is configured as described above, and therefore has the following problems. In other words, if the winding is misaligned during winding, the winding will be inserted at an angle, making it extremely difficult to wind the winding in an aligned manner all the way to the back of the groove. Therefore, when the resolver is used in a vehicle, there is a risk that the entangled portion of the winding may come into contact with other objects and break. In addition, the portion of the tying below the groove of the terminal pin is susceptible to vibration, and there were concerns about adverse effects when the tying portion vibrated.

[0006] The present invention has been made to solve the above problems, and in particular, has a protrusion formed on the terminal pin that holds the winding wound around the terminal pin beyond the protrusion, thereby preventing the winding from falling off the terminal pin. [Means for solving the problem]

[0007] The structure for tying a winding to a terminal pin according to the present invention is a structure for tying a winding to a terminal pin of a resolver, in which a protrusion is formed on the outer peripheral surface of the terminal pin and protrudes outward from the outer peripheral surface, and the winding wound on the outer peripheral surface is wound over the protrusion, the terminal pin has a circular or rectangular cross-sectional shape, the protrusion is formed on both sides or around the entire outer peripheral surface, a groove is formed in part of the outer peripheral surface of the terminal pin, continuing from the protrusion, and the protrusion is trapezoidal in appearance. [Effects of the Invention]

[0008] The structure for tying the winding to the terminal pin according to the present invention is configured as described above, and therefore has the following effects. That is, in a winding winding structure for a terminal pin of a resolver, in which the winding is wound around the terminal pin, a protrusion is formed on the outer peripheral surface of the terminal pin and protrudes outward from the outer peripheral surface, and the winding wound around the outer peripheral surface is wound beyond the protrusion, so that the groove and the protrusion prevent the winding from coming off the terminal pin, and the winding can be prevented from falling off. In addition, the terminal pin has a circular or rectangular cross-sectional shape, and the protrusion is formed on both sides or around the entire circumference of the outer surface, thereby preventing objects from falling off on both sides or around the entire circumference of the terminal pin. In addition, a groove is formed on a portion of the outer surface of the terminal pin, continuing from the protrusion, so that any tangle that passes over the protrusion enters the groove and is locked there, preventing it from falling off or coming loose from the terminal pin. Furthermore, by forming the protrusion in a trapezoidal shape when viewed from the outside, the tether can be held and the function of the protrusion can be maintained regardless of the shape of the trapezoid. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a front view showing a terminal pin of a structure for tying a winding to a terminal pin according to an embodiment of the present invention; [Figure 2] FIG. 2 is a right side view of FIG. [Figure 3] FIG. 2 is an enlarged view of a main part of FIG. [Figure 4] FIG. 2 is a front view showing another embodiment of FIG. [Figure 5] FIG. 2 is a plan sectional view of the terminal pin of FIG. 1. [Figure 6] 2 is a plan cross-sectional view showing the upper surface of the protrusion of FIG. 1. FIG. [Figure 7] FIG. 7 is a plan sectional view showing another embodiment of FIG. 6. [Figure 8] FIG. 2 is a front view showing the state in which the winding is wound in FIG. [Figure 9] FIG. 9 is a right side view of FIG. 8. [Figure 10] FIG. 1 is a front view showing a conventional tying structure. [Figure 11] FIG. 11 is a right side view of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] The structure for winding the terminal pin according to the present invention has a protrusion formed on the terminal pin, and by holding the winding wound around the terminal pin beyond the protrusion, it is possible to prevent the winding from falling off the terminal pin. [Example]

[0011] Hereinafter, preferred embodiments of the structure for tying a winding to a terminal pin according to the present invention will be described with reference to the drawings. In addition, parts that are the same as or equivalent to those in the conventional example are denoted by the same reference numerals. FIG. 1 is a front view showing a terminal pin of a structure for tying a winding to a terminal pin according to this embodiment, and FIG. 2 is a right side view of FIG. In Figures 1 and 2, the reference numeral 1 denotes a terminal pin holding portion formed by insert-molding a plurality of terminal pins 2, and the terminal pin holding portion 1 is integrally formed with a part of a ring-shaped insulating cap for covering a protruding magnetic pole formed to protrude from a resolver stator (not shown). The above configuration is a well-known structure disclosed in many patent documents, and therefore only an outline thereof will be shown in the description of the embodiment of the present invention. A groove 4 is formed in a portion of the terminal pin 2 provided in the terminal pin holding portion 1 near the tip side 2A of the terminal pin 2.

[0012] A protrusion 10 is formed below the groove 4 formed in a part of the terminal pin 2, continuing from the groove 4, and is shaped like an inverted trapezoid or a trapezoid as shown in Figure 4. As can be seen in Figure 2, the groove 4 is not formed around the entire outer surface 2a, but only on a part of it (for example, only one side of a rectangle, or only a 120° portion of a circle), and the groove lower surface 4a of the groove 4 and the protrusion upper surface 10a of the protrusion 10 are the same, i.e., flush. Fig. 4 is an enlarged view of the main part of Fig. 1. As shown in Fig. 1, a tapered portion 20 is formed from the upper surface 10a of the protruding portion to the outer peripheral surface 2a of the terminal pin 2.

[0013] The terminal pin 2 has a cross-sectional shape that is circular or rectangular (or square) as shown in Figure 5, and the protrusions 10 are provided on both sides of the outer surface 2a (Figures 1 to 9 show a case where the terminal pin 2 is rectangular). 1 are provided on both the left and right sides of the terminal pin 2, and have a planar shape as shown in Fig. 6. Note that the protrusions 10 may be provided not only on both the left and right sides of the terminal pin 2, but also on the side surfaces, or may be provided around the entire circumference of the circular cross section. 8 and 9 show a state in which the winding 12 is wound around the outer peripheral surface 2a of the terminal pin 2 in Fig. 1. The winding 12, which is a stator winding wound around the outer peripheral surface 2a of the terminal pin 2, is configured so that after being wound around the outer peripheral surface 2a of the terminal pin 2, it passes over the protruding portion 10 and passes through the groove 4 while winding around the tapered portion 20 of the protruding portion 10. Although not shown here, the terminal pin 2 is not limited to the rectangular shape mentioned above, but can also be a circular pin that can be used to form a half-split protrusion 10 with a pair of semicircular inner surfaces on both sides. [Industrial Applicability]

[0014] The structure for winding the terminal pin according to the present invention has a protrusion in the middle of the terminal pin, so that the winding after being wound passes over this protrusion and passes through the groove, and therefore the winding does not fall back (fall back to its original position) after being wound, which greatly improves the reliability of the resolver. [Explanation of symbols]

[0015] 1 Terminal pin holder 2 terminal pins 2A Tip side 2a Outer surface 2b Pin top surface 4 grooves 4a Groove bottom surface 10 Protrusion 10a Top surface of protrusion 12 windings 20 Tapered section

Claims

1. A structure for winding a winding (12) to a terminal pin (2) insert-molded into a terminal pin holding portion (1) of a resolver, A protruding portion (10) is provided protruding outward from an outer peripheral surface (2a) of the terminal pin (2) protruding from the terminal pin holding portion (1) at an intermediate portion between the tip and the protruding base portion, A groove (4) is formed in a part of the outer circumferential surface (2a) of the terminal pin (2) so as to contact the side of the protrusion (10) close to the tip of the terminal pin (2), The winding (12) wound from the outer peripheral surface (2a) between the terminal pin holding portion (1) and the protrusion (10) passes over the protrusion (10) and is wound through the groove (4).

2. 2. The winding structure for a terminal pin according to claim 1, characterized in that the terminal pin (2) has a circular or rectangular cross-sectional shape, and the protrusion (10) is formed on both sides or over the entire circumference of the outer circumferential surface (2a).

3. 3. The structure for tying a winding to a terminal pin according to claim 1, wherein said protrusion (10) has a trapezoidal shape when viewed from the outside.

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