JPH0529283U - Two-stage resolver - Google Patents

Abstract

(57) [Summary] [Object] The present invention relates to a two-stage resolver, and in particular, is provided with a resolver stator of each resolver unit provided in an integrally formed cylindrical case to improve the accuracy of combination of the resolver units. And [Structure] The two-stage resolver according to the present invention comprises a first and a second resolver.
First and second resolver stators (8,15) of the resolver section (1,2)
And the first and second transformer stators (9, 17) of the first and second rotary transformers (11, 19) are provided in an integrally formed cylindrical case (6).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a two-stage resolver, and more particularly, to a new improvement for improving the accuracy of combination of resolvers provided in a cylindrical case integrally formed with the resolver stator of each resolver.

[0002]

[Prior Art]

 As this type of resolver used conventionally, there is generally a configuration disclosed in Japanese Utility Model Publication No. 3-3168, but when constructing a two-stage resolver, the structure shown in FIG. 2 is used. Was adopted. That is, the reference numeral 1 in FIG. 2 is the first resolver section, and the first resolver section 1 is provided with the second resolver section 2 in series. The first rotor 3 and the second rotor 4 of No. 2 are provided with an integral hollow rotary shaft 5.

A first resolver stator 8 having a first resolver stator coil 7 is provided in the first cylindrical case 6 of the first resolver portion 1, and a first rotor coil corresponding to the first resolver stator 8 is provided. The first rotor 3 having 3a is arranged on the hollow rotary shaft 5. The first cylindrical case 6 is provided with a first transformer stator 9 having a first transformer stator coil 9a, and the hollow rotary shaft 5 is provided at a position corresponding to the first transformer stator 9. A first transformer rotor 10 having a first transformer rotor coil 10a is provided, and the first transformer stator 9 and the first transformer rotor 10 constitute a first rotary transformer 11.

The second tubular case 12 of the first resolver portion 2 is fitted into each other via the spigot portion 13, and the second tubular case 12 has a second resolver stator coil 14. A second resolver stator 15 is provided, and the second rotor 4 having a second rotor coil 16a corresponding to the second resolver stator 15 is arranged on the hollow rotating shaft 5.

The second tubular case 6 is provided with a second transformer stator 17 having a second transformer stator coil 17 a, and the hollow rotary shaft 5 is provided at a position corresponding to the second transformer stator 17. A second transformer rotor 18 having a second transformer rotor coil 18a is provided, and the second transformer stator 17 and the second transformer rotor 18 constitute a second rotary transformer 19.

[0006]

[Problems to be solved by the device]

 Since the conventional resolver is configured as described above, it has the following problems. That is, since each resolver part was composed of a pair of cylindrical cases 6 and 12 that were separately configured and were connected in series with each other via the spigot part, the zero adjustment of each resolver part was made depending on the accuracy of the connection. Since the accuracy of the above was affected, it was extremely difficult to perform high-precision zero adjustment. The present invention has been made to solve the above problems, and in particular, the resolver stator of each resolver section is provided in an integrally formed cylindrical case to improve the accuracy of combination of each resolver section. The purpose is to provide a two-stage resolver.

[0007]

[Means for Solving the Problems]

 The two-stage resolver according to the present invention comprises a first resolver unit and a first rotary transformer, and a second resolver unit and a second rotary transformer arranged in series in a cylindrical case. Each resolver stator and each transformer stator of each rotary transformer are provided in the integrally formed cylindrical case.

[0008]

[Action]

 In the two-stage resolver according to the present invention, since the resolver parts are provided in the integrally formed cylindrical case, the accuracy of coupling the resolver parts can be improved. Since the auxiliary cylindrical case is joined to a part of the first resolver stator of the first resolver portion, only the first resolver stator can be rotated by rotating the auxiliary cylindrical case. Therefore, zero adjustment of each resolver can be performed easily and with high accuracy.

[0009]

【Example】

 Hereinafter, preferred embodiments of a two-stage resolver according to the present invention will be described in detail with reference to the drawings. It should be noted that the same or equivalent portions as those of the conventional example will be described by attaching the same reference numerals. FIG. 1 is a sectional view showing a two-stage resolver according to the present invention. The reference numeral 1 in FIG. 1 is a first resolver section, and a second resolver section 2 is provided in series with the first resolver section 1. The rotor 3 and the second rotor 4 are provided with an integral hollow rotary shaft 5.

A first resolver stator 8 having a first resolver stator coil 7 is provided in the tubular case 6 provided with the first resolver portion 1, and a first resolver stator 8 corresponding to the first resolver stator 8 is provided. The first rotor 3 having a rotor coil 3 a is arranged on the hollow rotary shaft 5.

The tubular case 6 is provided with a first transformer stator 9 having a first transformer stator coil 9 a, and a first transformer stator 9 having a first transformer stator coil 9 a is provided at a position corresponding to the first transformer stator 9 of the hollow rotary shaft 5. A first transformer rotor 10 having a first transformer rotor coil 10a is provided, and the first transformer stator 9 and the first transformer rotor 10 constitute a first rotary transformer 11.

A second resolver stator 15 having a second resolver stator coil 14 is provided via a spacer 20 in the cylindrical case 6 provided with the second resolver portion 2, and the second resolver stator 15 is provided. Corresponding to the above, the second rotor 4 having the second rotor coil 16a is arranged on the hollow rotary shaft 5.

A second transformer stator 17 having a second transformer stator coil 17 a is provided via a spacer 21 at a position adjacent to the second resolver stator 15 of the tubular case 6, and the hollow rotary shaft 5 is provided. A second transformer rotor 18 having a second transformer rotor coil 18a is provided at a position corresponding to the second transformer stator 17, and the second transformer rotor 17 and the second transformer rotor 18 allow the second transformer rotor 18 to perform a second rotation. It constitutes the transformer 19.

An upper portion 6a of the cylindrical case 6 is joined to an outer peripheral position of about half the axial direction of the first resolver stator 8, and the first resolver stator 8 and the upper portion 6a are The first resolver stator 8 is arranged so as to be rotatable so as to be rotatable with a slight gap (not shown).

A screw hole 23 is formed in a collar portion 6aA formed on the upper portion 6a of the tubular case 6, and a ring-shaped auxiliary tubular case 24 is provided on the upper portion 6a. The auxiliary cylindrical case 24 is fitted on the outer circumference of the first resolver stator 8, and the auxiliary cylindrical case 24 is located at about half the position of the outer circumference of the first resolver stator 8 in the axial direction. Fitted in one piece.

Therefore, when the auxiliary cylindrical case 24 is rotated, the first resolver stator 8 is also rotated together. The auxiliary cylindrical case 24 is provided in the elongated hole 24 a of the auxiliary cylindrical case 24, and the connecting means is The mounting screw 25 formed is screwed into the screw hole 23.

Next, in the above-described configuration, when the zero adjustment of each resolver unit 1 and 2 is actually performed, after loosening each mounting screw 25, the first resolver buster 8 is attached via the auxiliary cylindrical case 24. Rotate, measure the output signals of each resolver unit 1 and 2 with a measuring instrument (not shown), and tighten the mounting screws 25 while the zero points of the output signals are in agreement. Can be completed.

[0018]

[Effect of the device]

 Since the two-stage resolver according to the present invention is configured as described above, the following effects can be obtained. That is, since the resolver stator of each resolver section is provided in the integral cylindrical case, the coupling accuracy can be significantly improved as compared with the conventional separate structure with the spigot section. Further, since the auxiliary cylindrical case is fitted around the outer periphery of the first resolver stator and is integrally rotatable, the zero adjustment can be easily performed by rotating only the auxiliary cylindrical case.

[Brief description of drawings]

FIG. 1 is a sectional view showing a two-stage resolver according to the present invention.

FIG. 2 is a cross-sectional view showing a conventional configuration.

[Explanation of symbols]

 1 1st resolver part 2 2nd resolver part 6 Cylindrical case 9,17 Transformer stator 11,19 Rotating transformer 24 Auxiliary cylindrical case 25 Coupling member (mounting screw)

Claims (2)

[Scope of utility model registration request] 1. A first resolver section (1) and a first rotary transformer (11), a second resolver section (2) and a second rotary transformer (19).
A two-stage resolver having a structure in which and are provided in series in a cylindrical case (6), wherein the first and second resolver parts (1, 2) are provided.
The first and second resolver stators (8, 15) and the first and second resolvers.
The first and second transformers of the rotary transformer (11, 19) (9,
A two-stage resolver characterized in that 17) is provided in the cylindrical case (6) integrally formed. 2. An auxiliary tubular case (24) provided at one end of the tubular case (6), and a coupling for coupling the auxiliary tubular case (24) and the tubular case (6). The two-stage type according to claim 1, further comprising a member (25), wherein the auxiliary cylindrical case (24) is provided on an outer periphery of the first resolver stator (8). Resolver.