JPH1198769A - Protective cover structure for resolver coil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent generation of wrong connection, such as wire breakage due to disturbance at the connection part of a lead wire with a coil, by covering a plastic body which retains a terminal pin for connecting the lead wire by a coil protective cover, and covering the protruding part of the terminal pin with a swelling part formed at the coil protective cover. SOLUTION: An under cover 3 is formed at one end part of an annular stator 1 with a coil 2 disposed at the slit part of its inner edge, and a plastic body 5 which retains a terminal pin 4 for connecting a lead wire 7 is formed at the upper surface of the under cover 3. A protruding part 4a of the terminal pin 4 is passed through the plastic body 5 to be protruded upward, and is connected to the end part of a coil 2. The upper surface of the coil 2 and the plastic body 5 are covered with a coil cover 10, and the protruding part 4a of the terminal pin 4 is fully covered with a swelling part 10a formed integrally with the coil protective cover 10. An end part 10b of the coil protective cover 10 is jointed to the plastic body 5 with adhesive or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil protection cover structure of a resolver, and more particularly, to a structure in which a protrusion of a terminal pin to which a coil is connected is covered by a ring-shaped coil protection cover provided on both surfaces of a stator to improve reliability. New improvement to obtain the improvement of.

[0002]

2. Description of the Related Art A conventional resolver of this type, which is not shown in the drawings, has an end of a coil connected to a lead wire by solder, and the lead wire is passed through a status lot and fixed. . Also, potting and the like are performed on both surfaces of the stator to perform coil cover.

[0003]

Since the conventional resolver is configured as described above, the connection between the lead wire and the coil by soldering is not covered with the coil protection cover and is exposed to the outside. In some cases, disconnection or the like of the connection portion may occur, and it has been extremely difficult to improve the reliability.

[0004]

According to the present invention, there is provided a coil protection cover structure for a resolver in which a rotor is rotatably disposed inside a ring-shaped stator, and a coil provided on the ring-shaped stator is connected to a lead wire. In the resolver, an undercover provided at an end of the annular stator, a plastic body provided on the end and holding a terminal pin connected to the lead wire, and a lead wire protruding from the plastic body are provided. A projecting portion of the terminal pin to be connected; first and second coil protection covers provided on both surfaces of the ring-shaped stator to cover the coil; and a projection formed on the first coil protection cover. A bulging portion for covering is provided, and the first coil protection cover and the plastic body are combined.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a coil protection cover structure for a resolver according to the present invention will be described below with reference to the drawings. In FIG. 1 and FIG. 2, a reference numeral 1 denotes a ring-shaped stator having an annular shape and a multilayer structure, and a slit (not shown) at the inner edge of the ring-shaped stator 1 has, for example, a one-phase excitation two-phase output. A known coil 2 in the form of a mold is provided. End 1 of the annular stator 1
In FIG. 1A, an under cover 3 having a U-shaped cross section is provided. On the upper surface of the under cover 3, a plastic body 5 holding one or a plurality of terminal pins 4 and made of plastic is provided. Projection 4a of terminal pin 4
Project upward through the plastic body 5, and the end of the coil 2 is connected to the protruding portion 4a.
Further, each of the terminal pins 4 is crimp-connected to a lead wire 7 connected to a connector 6 by well-known crimping means. Although not shown, the undercover 3 is fitted and locked in the slit 1A of the annular stator 1.

Inside the ring-shaped stator 1, a well-known ring-shaped and multi-layer structure is provided, and in this embodiment, a variable reluctance type (VR type) rotor 8 is rotatably disposed. First and second coil protection covers 10 and 11 having a ring shape are provided on both surfaces. The first coil protection cover 10 covers the upper surface of each coil 2 and also covers the plastic body 5 and the protrusion 4a, and sufficiently covers the protrusion 4a at a position corresponding to the protrusion 4a. A bulging portion 10a of a protruding and bulging shape is formed integrally so as to be able to perform the operation. The end 10b of the first coil protection cover 10 is shown in FIG.
As shown in FIG. 11 or FIG. 11, the second coil protection cover 11 is bonded to the plastic body 5 by a fusion portion 100 or an adhesive, and covers the lower surface of each coil 2 and the end portion thereof. 11a is bonded to the under cover 3 by fusing or bonding.

The terminal pins 4 are configured as shown in FIGS. That is, in the case of FIGS. 3 and 4, the protruding portion 4a has a cross shape, in the case of FIGS. 5 and 6, the protruding portion 4a has a bar shape, and in the case of FIGS. I have.

The mounting structure of the coil protection cover 10 is not limited to the above-described configuration. For example, when the plastic body 5 is provided inside the under cover 3 as shown in FIG. As shown in FIG. 13, the coil protection cover 10 and the plastic body 5 are
14, when the coil protection cover 10 and the plastic body 5 are connected using the caulking portion 102 as shown in FIG. 14, as shown in FIG. 16 are connected by using the hook portion 103, and when a part of the coil protection cover 10 of FIG. 10 is tapered as shown in FIG. When the protrusion 5a of the plastic body 5 is crimped, the pair of plastic bodies 5 located on both sides of the stator 1 are sandwiched between the pair of coil protection covers 10 and 11, as shown in FIG. When the pillars 10c of the first coil protection cover 10 are joined by the fusion portion 100, as shown in FIG.
The same operation as described above can also be obtained when the projections 11b of the second coil protection cover 11 are penetrated and coupled to the holes 105 formed in the second coil protection cover 11.

[0009]

The resolver coil protective cover structure according to the present invention is constructed as described above, so that the following effects can be obtained. That is, the plastic body having the terminal pin connected to the lead wire is covered with the coil protection cover, and the protruding portion of the terminal pin is covered with the bulging portion of the coil protection cover. The connection portion is completely covered, and no connection failure due to disturbance occurs, and high reliability as a resolver can be obtained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a coil protection cover structure of a resolver according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a configuration diagram illustrating a terminal pin of FIG. 1;

FIG. 4 is a configuration diagram of a protrusion of FIG. 3;

FIG. 5 is a configuration diagram showing another example of FIG. 3;

FIG. 6 is a configuration diagram showing a protrusion of FIG. 5;

FIG. 7 is a configuration diagram showing another example of FIG. 3;

FIG. 8 is a configuration diagram showing another example of FIG. 3;

FIG. 9 is a configuration diagram showing another example of FIG. 3;

FIG. 10 is an enlarged sectional view showing a main part of FIG.

11 is a sectional view of a main part of FIG.

FIG. 12 is a sectional view showing another example of FIG. 11;

FIG. 13 is a sectional view showing another example of the main part of FIG. 10;

FIG. 14 is a sectional view showing another example of FIG.

FIG. 15 is a sectional view showing another example of FIG. 14;

FIG. 16 is a sectional view showing another example of FIG.

FIG. 17 is a sectional view showing another example of FIG.

FIG. 18 is a sectional view showing another example of FIG.

FIG. 19 is a sectional view showing another example of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ring-shaped stator 2 Coil 3 Under cover 4 Terminal pin 4a Projection part 5 Plastic body 7 Lead wire

Claims (1)

[Claims] A rotor (8) is rotatably arranged inside a ring-shaped stator (1), and a coil (2) provided on the ring-shaped stator (1) is connected to a lead wire (7). In the resolver, the undercover (3) provided at the end of the annular stator (1), and the lead wire provided on the end
Plastic body holding terminal pin (4) to which (7) is connected
(5) and the lead wire protruding from the plastic body (5)
The first and second coil protections formed in a ring shape so as to cover the coil (2) provided on both surfaces of the ring-shaped stator (1) and the projecting portion (4a) of the terminal pin (4) to which (7) is connected. Cover (10, 11)
And a bulging portion (10a) formed on the first coil protection cover (10) to cover the protrusion (4a), wherein the first coil protection cover (10) and the plastic body (5) are provided. Is a coil protecting cover structure of a resolver, wherein the coil protecting cover structure is combined.