JP2010122159A - Stator structure of resolver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stator structure of a resolver which can be mounted to an apparatus side to which the resolver is mounted without requiring a wasteful space. <P>SOLUTION: In the stator structure 1 of the resolver including: a substantially ring-like stator core 2 having a fixed magnetic pole 10 projected inward along a radial direction; first and second substantially ring-like insulation members 4, 6 concentrically provided at the stator core 2 so as to sandwich the stator core 2; and a terminal board 12 provided at a part of one of the first and second insulation members 4, 6 and provided with a plurality of terminal pins 21 for connecting an end wire 8a of a stator winding 8 wound around the fixed magnetic pole 10, the terminal board 12 is formed on either of circumferences of the first and second insulation members 4, 6. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a resolver stator structure, and more particularly to a resolver stator structure provided with a terminal block including a plurality of terminal pins for connecting end lines of stator windings.

As shown in FIG. 6, a conventional resolver stator is provided with substantially ring-shaped insulating members 104 and 105 so as to sandwich both surfaces of a substantially ring-shaped stator 100 from above and below. The terminal block 112 is generally provided so as to protrude outward along the line (see, for example, Patent Document 1). The terminal block 112 is provided with a terminal pin 120 around which the end wire 109 of the stator winding 108 wound around the fixed magnetic pole 106 is entangled, and further outward in the radial direction from the terminal block 112 for external connection. The connector portion 114 is extended. As is well known, a rotor (not shown) having a predetermined shape is provided inside such a stator 100, and a resolver is configured with the stator 100 and the rotor as basic components.

JP 2004-23977 A

  The conventional resolver having the stator structure as shown in FIG. 6 is a device to which the resolver is attached because its terminal block 112 is provided so as to protrude radially outward from the periphery of the stator (and therefore the resolver). On the side, an extra space corresponding to the protruding portion is required. This is because, for example, in a space where many parts are arranged in a limited space, such as when a resolver is mounted inside a vehicle body, for use as a rotational position detector for a motor mounted on an automobile. When it is necessary to house and install the resolver, it becomes a big problem.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a resolver stator structure that can be attached without requiring extra space on the device side to which the resolver is attached.

  The following aspects of the present invention exemplify the configuration of the present invention, and will be described separately for easy understanding of various configurations of the present invention. Each section does not limit the technical scope of the present invention, and some of the components of each section are replaced, deleted, or further, while referring to the best mode for carrying out the invention. Those to which the above components are added can also be included in the technical scope of the present invention.

(1) a substantially ring-shaped stator core having a fixed magnetic pole projecting inward along the radial direction; first and second substantially ring-shaped insulating members provided substantially concentrically with the stator core so as to sandwich the stator core; A resolver stator including a plurality of terminal pins for connecting end lines of a stator winding wound around the fixed magnetic pole, wherein the terminal block includes the first and second insulating members. A resolver stator structure formed on the circumference of a part of any one of the above (Claim 1).

(2) In the resolver stator structure according to (1), the terminal block and the terminal pin are extended along the axial direction of the stator. 2).

(3) The resolver stator structure according to (1) or (2), wherein the terminal block is formed integrally with one of the first and second insulating members. The stator structure of the present invention (Claim 3).

(4) The resolver stator structure according to any one of (1) to (3), wherein the terminal pins are arranged along a circumferential direction of the stator (claim 4). .

(5) In the stator structure of the resolver according to any one of (1) to (4), one of the first and second insulating members on which the terminal block is not formed is provided on the lower side of the terminal block. The resolver stator structure according to claim 5, further comprising an end wire crossing pin that relays a path of the end wire of the stator winding between the terminal pin and the fixed magnetic pole.

(6) The resolver stator structure according to any one of (1) to (5), further including an external connection terminal formed integrally with each of the plurality of terminal pins and exposed from the outer peripheral surface of the terminal block. A resolver stator structure characterized by the above (claim 6).

(7) In the stator structure of the resolver according to any one of (1) to (6), the terminal block is electrically connected to each of the plurality of terminal pins and arranged along a circumferential direction of the stator. A resolver stator structure, further comprising a plurality of welding terminals exposed from an outer peripheral surface of the resolver (claim 7).

  According to the stator structure of the resolver according to the present invention, it is possible to attach the resolver without requiring extra space on the device side to which the resolver is attached, and in the device to which the resolver is attached, the space in which the resolver is accommodated and attached. Can be effectively utilized. The resolver stator structure according to the present invention has a large number of parts in a limited space, particularly when the resolver is mounted inside a vehicle body for use as a rotational position detector for a motor mounted on an automobile. This is effective when it is necessary to accommodate and install the resolver in the space where the is placed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 are a perspective view, a front view, and a top view, respectively, showing a stator 1 of a resolver having a stator structure according to the first embodiment of the present invention, and FIG. It is sectional drawing cut | disconnected and shown by a line.

  The stator 1 in the present embodiment includes a substantially ring-shaped stator core 2 and first and second insulating members 4 and 5 that are substantially ring-shaped and provided substantially concentrically with the stator core 2 so as to sandwich the stator core 2 from both the upper and lower sides. The whole is configured in a substantially ring shape. The stator core 2 has a plurality of fixed magnetic poles 10 that protrude inward along the radial direction and are arranged in the circumferential direction at predetermined intervals, and each fixed magnetic pole 10 includes magnetic pole teeth 6 at the tip. . The first and second insulating members 4 and 5 include magnetic pole insulating portions 7 and 9 projecting inward along the radial direction so as to sandwich the fixed magnetic poles 10 from both the upper and lower sides. It is wound around each fixed magnetic pole 10 via the magnetic pole insulators 7 and 9.

  Further, the stator 1 is formed with a terminal block 12 integrally with the first insulating member 4 at a part of the circumference of the first insulating member 4, and the terminal block 12 includes a plurality of terminal portions 20 (FIG. 5). Reference) is planted. The terminal block 12 extends on the circumference of the first insulating member 4 along the axial direction of the stator 1 (i.e., the direction perpendicular to the paper surface in FIG. 3). The terminal pin 21 is similarly implanted in the terminal block 12 so as to extend along the axial direction of the stator.

  Here, the point where the terminal block 12 is formed on the circumference of the first insulating member 4 will be described in detail as follows. In the present embodiment, the terminal block 12 is formed along the circumferential direction of the first insulating member 4 having a substantially ring shape, and in addition, the outer peripheral surface 12a of the terminal block 12 is the outer peripheral surface 4a of the first insulating member 4 ( And the same outer peripheral surface of the second insulating member 5 that is omitted from the reference numeral) does not protrude outward along the radial direction of the stator 1, and the inner peripheral surface 12b of the terminal block 12 is the first insulating member. The member 4 is formed so as not to protrude inward along the radial direction of the stator 1 from the inner peripheral surface 4b of the member 4 (and the inner peripheral surface of the second insulating member 5 whose reference numeral is omitted). .

  That is, in the stator 1 in this embodiment, at least the terminal block 12 does not protrude outward beyond the outer diameter of the stator 1, and the terminal block 12 protrudes inward within the inner diameter of the stator 1 and is fixed. It is configured so as not to protrude above the magnetic pole 10.

  Further, as shown in FIG. 5, the terminal portion 20 includes a terminal pin 21 for connecting the end wire 8 a of the stator winding 8 wound around the fixed magnetic pole 10, and a terminal from the vicinity of the base end portion of the terminal pin 21. A plate-like external connection terminal 22 extending in a direction substantially orthogonal to the pin 21 and a welding terminal 23 extending downward in the direction parallel to the terminal pin 21 from the vicinity of the base end portion of the terminal pin 21 are integrated. It is formed.

  The terminal portion 20 has a plurality of terminal pins 21 arranged along the circumferential direction of the stator 1, and the terminal block 12 so that a part of each external connection terminal 22 protrudes from the outer peripheral surface 12 a of the terminal block 12. Accordingly, the welding terminals 23 are also arranged along the circumferential direction of the stator 1. As shown in FIG. 2, the terminal block 12 is provided with window portions 13 at corresponding positions so that the welding terminals 23 of the terminal portion 20 are exposed from the outer peripheral surface 12 a.

  Next, processing of the end line 8a of the stator winding 8 of the stator 1 will be described with reference to FIG. In the second insulating member 5 in the present embodiment, in addition to the well-known transition pin 14 provided between the fixed magnetic poles 10, a stator between the terminal pin 21 and the fixed magnetic pole 10 is provided at a lower portion of the terminal block 12. Each terminal pin 21 is provided with an end line connecting pin 16 that relays the path of the end line 8 a of the winding 8.

  For example, the winding of the excitation winding is made by winding the end line 8a of the stator winding 8 around the terminal pin 21 (R2) and then pulling it down along the inner peripheral surface 12b of the terminal block 12 to make the terminal pin 21 (R2) Engagement end pins 16 (R2, S3) (for example, end line connection pins provided closest to the terminal pin 21 (R2)), and then to a predetermined fixed magnetic pole 10. Start winding. On the other hand, after the winding of all the predetermined fixed magnetic poles 10 is finished, the end pin crossover pin 16 (R1) for the terminal pin 21 (R1) is engaged, and then the inner peripheral surface of the terminal block 12 Pull up along 12b and bind to the terminal pin 21 (R1). The same applies to the winding of the output winding (for example, COS phase (terminal pin 21 (S1) to terminal pin 21 (S3) and SIN phase (terminal pin 21 (S2) to terminal pin 21 (S4))). is there.

  In the stator 1 according to the present embodiment, the welding terminal 23 is exposed from the window portion 13 of the terminal block 12, and the stator winding 8 entangled with each terminal pin 21 applies an electrode to the welding terminal 23. By performing welding (for example, arc welding, in particular, so-called TIG (tungsten inert gas welding)) by connecting, each terminal pin 21 is securely and electrically connected.

  In this embodiment, the stator core 2 is formed by laminating silicon steel plates, for example, and the first and second insulating members 4 and 5 are formed by molding synthetic resin such as 6-6 nylon, for example. Is. The stator winding 8 is made of, for example, a copper wire having a diameter of about φ = 0.1. The terminal portion 20 is made of, for example, phosphor bronze, and is preferably implanted in the terminal block 12 by insert molding or the like. However, this invention is not limited by the material which comprises each component, Any arbitrary material for each component to perform the function can be used.

  In addition, the stator 1 according to the present embodiment is configured as a resolver with a rotor having a predetermined shape on the inside thereof, but the configuration in relation to the rotor and the function as a resolver are the same as those of a conventional resolver. The description thereof is omitted.

  Next, the effects of the present invention will be described based on the embodiment described above.

  First, in the stator 1 according to the present embodiment, the terminal block 12 is formed on the circumference of the first insulating member 4, and the outer peripheral surface 12 a does not protrude from the outer peripheral surface 4 a of the first insulating member 4. Since it does not substantially include a portion projecting outward beyond the outer diameter of the stator 1 (and hence the resolver including the stator 1), it can be mounted without requiring extra space on the device side to which the resolver is mounted. The space in which the resolver is accommodated and attached can be used effectively.

  The description of “substantially does not include” is as follows. That is, the stator 1 according to the present embodiment has a configuration in which the external connection terminal 22 of the terminal portion 20 slightly protrudes from the outer peripheral surface of the stator 1. It is because it was set as the structure assumed that the external connection components, such as a connector, were taken, and the electrical connection with the exterior was taken. In this case, the space occupied by the portion where the external connection terminal 22 protrudes from the outer peripheral surface of the stator 1 is the space originally required for arranging the connection component, and is the stator 1 (and thus the resolver including the stator 1). ) Does not substantially increase the space occupied.

  Furthermore, in the present embodiment, the external connection terminal 22 is projected from the outer peripheral surface 12a of the terminal block 12, but this configuration is an example of a configuration for establishing an electrical connection with the outside. The invention includes any appropriate configuration in which the external connection terminal 22 is exposed at least from the outer peripheral surface 12a of the terminal block 12 and can be electrically connected to the outside.

  Further, the stator 1 has a terminal block 12 formed on the circumference of the first insulating member 4, so that the inner circumferential surface 12 b protrudes inward from the inner circumferential surface 4 b of the first insulating member 4 and is fixed. It is configured so as not to protrude above the magnetic pole 10. Accordingly, the fixed magnetic pole 10 of the stator winding 8 can be easily wound by the same method as that of the conventional stator while realizing the space saving as described above.

  Further, the stator 1 has the terminal block 12 and the terminal pin 21 extending in the axial direction of the stator 1, so that, in addition to the effects described above, the distance between the terminal pin 21 and the fixed magnetic pole 10 is changed to the terminal block 12. It has a feature that it can be increased by the height in the axial direction. In general, this feature is advantageous in that the stator winding 8 is preferably a fine wire having a diameter of about φ = 0.1 mm. For example, when excessive tension is applied due to expansion / contraction due to fluctuations in the environmental temperature during use. This is because disconnection may occur. That is, in consideration of this point, it is not desirable to initially transfer the end line 8a of the stator winding 8 with too much tension, and in that respect, the distance between the terminal pin 21 and the fixed magnetic pole 10 is long. This is advantageous because a space for forming the looseness of the end line 8a can be easily secured.

  Further, by forming the terminal block 12 integrally with the first insulating member 4 as in the stator 1, it is possible to reduce the number of parts and the number of assembling steps and reduce the cost of the resolver. Also, forming the terminal block 12 integrally with the first insulating member 4 is advantageous in that the terminal block 12 is structurally strengthened.

  With respect to this point, the inner peripheral surface 12b of the terminal block 12 of the stator 1 projects inward from the inner peripheral surface 4b of the first insulating member 4 and does not protrude above the fixed magnetic pole 10. The following can be said. That is, for the purpose of forming the terminal block so as not to protrude beyond the outer diameter of the stator, as a result of forming the terminal block inside the first insulating member, the terminal block has a portion protruding above the fixed magnetic pole. In this case, it is impossible or extremely difficult to wind the stator winding in the state where the terminal block is present. And in order to eliminate this difficulty, for example, a step of forming the terminal block separately from the first insulating member and assembling the terminal block to the first insulating member after the winding process of the stator winding is completed. Necessary.

  Accordingly, the stator 1 can be easily wound around the fixed magnetic pole 10 of the stator winding 8 in the same manner as a conventional resolver, and the terminal block 12 is formed integrally with the first insulating member 4. In order to obtain the above-described effect, the terminal block 12 is not simply formed so as not to protrude beyond the outer diameter of the stator 1, but the terminal block 12 in the stator structure of the resolver according to the present invention. Is formed on the circumference of the first insulating member 4 so that the terminal block 12 does not protrude not only from the outer peripheral surface 4a of the first insulating member 4 but also from the inner peripheral surface 4b. .

  Further, the stator 1 has terminal pins 21 arranged along the circumferential direction of the stator 1, and therefore, as shown in FIG. 3, between the two terminal pins 21 at the outermost position as in a conventional resolver. Compared with the case where the terminal pins 21 are arranged in a straight line along the width W, the distance d between the terminal pins 21 can be made larger than the corresponding distance p. This facilitates the winding operation of the end wire 8a of the stator winding 8 around the terminal pin 21. In addition, by arranging the terminal pins 21 included in the terminal block 12 along the circumferential direction of the stator 1 in this way, it is ensured that the terminal pins 21 are present radially outward from the fixed magnetic pole 10, and fixed. It is reliably prevented that the terminal pin 21 interferes with the winding nozzle of the winding machine during the winding work on the magnetic pole 10.

  Further, in the stator 1, for the end line that relays the path of the end line 8 a of the stator winding 8 between the terminal pin 21 and the fixed magnetic pole 10 in a portion of the second insulating member 5 on the lower side of the terminal block 12. The provision of the crossover pin 16 is advantageous in the following points. That is, as described above, it is desirable that the end line 8a of the stator winding 8 between the terminal pin 21 and the fixed magnetic pole 10 has a certain degree of slack. On the other hand, if this slack becomes excessive, the stator 1 The loose portion of the end wire 8a that has fallen inward (fixed magnetic pole 10 side) along the radial direction of the wire becomes an obstacle to the winding operation of the stator winding 8 around the fixed magnetic pole 10, and there is a risk of disconnection. appear. Therefore, although it is desirable that the end line 8a has a certain degree of looseness, it is necessary to adjust the end line 8a so that it does not become excessive, and the end line 8a is fixed to the terminal pin 21 while adjusting the end line 8a. The end line 8a can be transferred to and from the magnetic pole 10.

  Further, in the stator 1, since the terminal pin 21 and the external connection terminal 22 are integrally formed as the terminal portion 20 in the terminal portion 20, not only the number of parts and the assembly man-hour are reduced, but also the external portion. The connection terminal 22 is firmly fixed to the terminal block 12.

  Further, in the stator 1, the welding terminals 23 are arranged along the circumferential direction of the stator 1. That is, when welding is performed on the plurality of terminal pins 21 in the welding operation, the stator 1 side is rotated and welded. By performing the feeding of the target terminal pin 21, the welding electrodes need only be moved back and forth by the same distance with respect to the welding terminals 23 of all the terminal pins 21, so that the welding can be performed efficiently. Can be implemented.

  In the stator 1, the terminal pin 21, the external connection terminal 22, and the welding terminal 23 are all integrated as the terminal portion 20, but the present invention is as long as they are all electrically connected. The case where any or all of these are configured as separate members is included. In particular, since the welding terminal 23 is embedded in the terminal block 12 and does not particularly require structural reinforcement, the terminal pin 21 and / or the external connection may be used as long as the terminal 23 is electrically connected. It is not necessarily integrated with the terminal 22 for use.

  As mentioned above, although this invention was demonstrated by preferable embodiment, this invention is not limited to embodiment mentioned above, A various deformation | transformation and application are possible within the range of the technical idea of this invention. In the above description of the embodiment, the terminal block 12 is formed on the first insulating member 4 for convenience of description. However, in the stator structure of the resolver according to the present invention, the terminal block 12 is the second. Needless to say, the insulating member 5 may be provided.

It is a perspective view which shows the stator structure of the resolver in one Embodiment of this invention. It is a front view which shows the stator structure of the resolver in one Embodiment of this invention. It is a top view which shows the stator structure of the resolver in one Embodiment of this invention. It is sectional drawing cut | disconnected and shown along the AA line shown in FIG. In one Embodiment of this invention, it is a perspective view which shows the structure of a terminal part. It is a perspective view which shows the stator structure of the conventional resolver.

Explanation of symbols

1: stator, 2: stator core, 4: first insulating member, 4a: outer peripheral surface of first insulating member, 4b: inner peripheral surface of first insulating member, 5: second insulating member, 6: magnetic pole teeth, 9: magnetic pole insulation, 8: stator winding, 8a: end line of stator winding, 10: fixed magnetic pole, 12: terminal block, 12a: outer peripheral surface of terminal block, 12b: inner peripheral surface of terminal block, 13: Window part, 14: Crossover pin, 16: Crossover pin for end line, 20: Terminal part, 21: Terminal pin, 22: Terminal for external connection, 23: Terminal for welding

Claims (7)

  A substantially ring-shaped stator core having a fixed magnetic pole protruding inward along the radial direction, first and second substantially ring-shaped insulating members provided substantially concentrically with the stator core so as to sandwich the stator core, and the fixed magnetic pole A resolver stator comprising: a terminal block having a plurality of terminal pins for connecting end lines of a stator winding wound around the stator coil, wherein the terminal block is one of the first and second insulating members; A resolver stator structure, wherein the resolver stator structure is formed on one circumference.   The resolver stator structure according to claim 1, wherein the terminal block and the terminal pin are extended along an axial direction of the stator.   The resolver stator structure according to claim 1 or 2, wherein the terminal block is formed integrally with one of the first and second insulating members.   4. The resolver stator structure according to claim 1, wherein the terminal pins are arranged along a circumferential direction of the stator. 5.   One of the first and second insulating members, on which the terminal block is not formed, is an end line of the stator winding between the terminal pin and the fixed magnetic pole in a lower portion of the terminal block. 5. The resolver stator structure according to claim 1, further comprising an end line connecting pin that relays the path of the resolver.   The resolver stator according to any one of claims 1 to 5, further comprising an external connection terminal formed integrally with each of the plurality of terminal pins and exposed from an outer peripheral surface of the terminal block. Construction.   A plurality of welding terminals that are electrically connected to each of the plurality of terminal pins and that are disposed along the circumferential direction of the stator and are exposed from the outer peripheral surface of the terminal block. Item 7. A resolver stator structure according to any one of Items 1 to 6.

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