Assembly for a resolver and method for manufacturing a resolver

Abstract

The invention relates to an assembly for a resolver and a method for manufacturing a resolver, in particular to an assembly (2, 3) for a resolver (1), comprising a base body (4.1, 4.2) arranged along an axis (A), a plurality of sheet stack sections (5a-5p) and a wire winding (6), and at least one closing device (7a-7p) coupled to the sheet stack sections (5a-5p). The main body (4.1, 4.2) has an annular design and has a receiving device (4.1. 1) along the inner periphery thereof, in which the sheet stack sections (5a-5p) are received in a form-fitting manner. A winding space (8) is arranged on the outer periphery of the base body (4.1, 4.2) between the receiving devices (4.1. 1), in which winding space the wire winding (6) partially runs. The invention further relates to a method for producing a resolver (1).

Description

Technical Field

[0001] In electrical engineering, an electromagnetic measurement transducer (sometimes called a measurement sensor) used to convert the angular position of a rotor into electrical parameters or electrical signals is called a resolver. In this application, the concept of "resolver" also includes measurement transducers called synchronizers, automatic synchronizers, or RVDTs (rotating variable differential transformers).

[0002] To detect absolute position, a resolver includes, for example, stator and rotor windings arranged opposite each other. These wire windings, typically made of copper wire, are wound onto a one-piece sheet stack having cavities for the wire windings. The rotor cavities are typically located outside the rotor sheet stack and can be applied externally, thus being well-automated. In contrast, a problem arises with applying the stator windings, namely, winding the cavities, which are typically located at the inner periphery, can only be achieved through complex mechanical winding methods or manually.

[0003] These types of rotary transformers are typically manufactured in large quantities, thus striving for simple and highly automated production of the stator and rotor. Background Technology

[0004] A rotary transformer with a stator structure is known from published document JP H05 292 721 A, in which wire windings are applied externally. For this purpose, a one-piece stator core is first provided with a groove on its outer peripheral side. After the stator windings are placed into the grooves from the outer peripheral side, a housing ring is externally assembled onto the stator stack. Finally, the stator core is machined away from the inner peripheral side, thereby exposing the previously introduced grooves.

[0005] This stator structure has drawbacks in terms of scrap rate because exposing the grooves can damage the wire windings. Furthermore, the described structure of the stator assembly is relatively expensive to manufacture and is also disadvantageous regarding measurement accuracy. Summary of the Invention

[0006] The present invention aims to create a component for a rotary transformer that can be manufactured relatively optimally and automatically.

[0007] According to the invention, this task is solved by the features of claim 1 or claim 12. Advantageous designs and improvements are described in the corresponding dependent claims.

[0008] The assembly for a rotary transformer according to the invention includes a base arranged along an axis, a plurality of sheet stack segments and wire windings arranged in the base, and at least one closing device connected to the sheet stack segments. The base has an annular structure and has receiving devices along its inner periphery, in which the sheet stack segments are shape-fitted and received. At the outer periphery of the base, axially extending winding spaces are arranged between the receiving devices, within which the wire windings partially extend.

[0009] The sheet stack segments are shaped to fit within the receiving device of the substrate and are characterized by the seamless engagement of two connecting mating members. Here, relative movement of the sheet stack segments in at least two directions, and preferably in all directions, is prevented.

[0010] The receiving devices are arranged equidistantly from each other and extend in the axial direction. The receiving devices may, for example, be constructed of radially arranged rectangular structures that form cavities for receiving sheet stack segments.

[0011] The concept of “cavity” should be understood in particular as an open cavity, meaning that the sheet stack section does not necessarily have to be completely surrounded by the matrix.

[0012] The winding space is arranged between the receiving devices on the outer periphery of the substrate. The winding space serves as a channel for laying wire windings. In particular, the winding space can also be constructed by receiving devices such that the receiving devices function on the one hand to accommodate sheet stack sections, and on the other hand to serve as the boundary of the winding space for wire windings arranged therebetween.

[0013] According to an advantageous improvement of the invention, the component is the stator of a rotary transformer.

[0014] In another design, the substrate has at least one tab extending in the circumferential direction at at least one of its end sides, the tab having a radially oriented directional component and, alternatively, an axially oriented directional component.

[0015] For example, the splice can be constructed continuously in the peripheral direction, thereby creating a peripherally oriented laying channel between the splice and the winding space, which also serves as the boundary of the winding space for the peripherally extended section of the wire winding.

[0016] Alternatively, multiple connecting pieces may be provided, which are arranged discontinuously in the peripheral direction.

[0017] The matrix is ​​advantageously multi-piece construction, or alternatively a single-piece construction formed of a non-magnetic material.

[0018] In particular, the matrix can be constructed in two parts, comprising a first matrix portion and a second matrix portion, which can be interconnected. One or more interconnecting points are preferably located along the periphery of the two matrix portions.

[0019] Non-magnetic materials are preferably deformable materials that do not have ferromagnetic properties, such as chemically or thermoplasticizable plastics or plastic mixtures, synthetic resins, ceramics or glass.

[0020] In other design options, the matrix is ​​manufactured via injection molding (sometimes referred to as injection molding process) or additive manufacturing.

[0021] The additive manufacturing process used to create a substrate can also be called the 3D printing process.

[0022] In addition, it is set as follows: • The sheet stacked sections each have a peripheral section located radially inward, a connecting section located radially outward, and a load-bearing section arranged between them. • The closing device has a connecting device configured to complement the connecting section of the sheet stack segment. • The connecting section of the sheet stack is joined together with the connecting device of at least one closing device.

[0023] The connecting section of the sheet stack segment includes, for example, at least one groove, wherein the connecting device of the at least one closure is constructed as a complementary pin. Alternatively, the connecting section of the sheet stack segment may also have a pin complementary to the groove constructed at the at least one closure.

[0024] Preferably, the connection between the connecting section of the sheet assembly segment and the connecting device of the closure device is achieved through one or more pin-type connections (e.g., in the form of a dovetail joint). However, other connection techniques are also conceivable, such as material fit connections achieved by means of conductive material bonding agents or by welding.

[0025] In particular, the design of pin-type connections with circular contours is advantageous because it results in more favorable magnetic conduction characteristics between the sheet stack sections and the closure device.

[0026] Advantageously, the sheet stacking section is constructed such that the width of the connecting section is smaller than the width of the peripheral section.

[0027] By using this design of the connecting section, it is feasible to more effectively transfer the magnetic flux absorbed through the peripheral section to the closing device.

[0028] In another design, the at least one closure device is constructed as a stack of sheets and is designed either as a ring that closes on the periphery or as a plurality of individual ring segments or ring fan segments.

[0029] Closure devices in the form of ring segments can be, in particular, partial segments of a ring, such as two semi-circular rings or multiple partial circular segments of a ring.

[0030] In cases where the closing device is designed as a semi-circular ring, it is advantageous, for example, to construct a portion of it in a rotationally symmetric manner at 90°.

[0031] In cases where the closure device is designed as a partially circular sector, each of the closure devices is connected in the peripheral direction to a connecting section of two sheet stack segments. In particular, each of the closure devices is connected at at least two connecting sections, which belong to adjacent sheet stack segments in the peripheral direction.

[0032] Advantageously, the sheet stack segment is embedded in the substrate, such that the peripheral segment and the substrate form a substantially flat surface at the inner peripheral surface of the component, and the substrate extends to the load-bearing segment of the sheet stack segment.

[0033] The concept of "flat" should be understood in a broader sense, meaning that in the fully assembled state of the substrate with its sheet-assembly segments, the inner circumferential surface of the component, curved to a defined radius, is largely flat and without any irregularities. In any case, it should not be understood in this sense as the inner circumferential surface depicting a two-dimensional, straight plane.

[0034] Therefore, the radius of curvature of the peripheral section of the sheet stack is basically equal to the radius of curvature of the inner peripheral surface (bridging component) of the substrate: R U =R M,i in R U := Radius of the perimeter segment; R M,i == Radius of the outer perimeter of the substrate; The receiving device of the substrate is designed such that its outline corresponds to the outline of the bearing section of the sheet stack segment and abuts it along its entire depth. Therefore, in this section, the receiving device of the substrate acts as an insulator between the sheet stack segment and the wire windings arranged in the area of ​​the bearing section. The receiving device of the substrate abuts against the outer outline of the sheet stack segment, particularly in the peripheral and bearing sections. The connecting section extends beyond the receiving device and is therefore not embedded in the substrate.

[0035] In another design, the substrate has multiple first tabs and multiple second tabs with radial components, wherein the first tabs and second tabs are arranged alternately along the periphery.

[0036] The method for manufacturing a rotary transformer according to the present invention, having two components rotatable relative to each other about an axis, comprises the following steps for manufacturing at least one of the components: • The sheet stack segments are at least partially embedded in a matrix constructed by injection molding or additive manufacturing processes. • The wire winding is applied to the outer periphery of the substrate within the winding space constructed between the sheet stack segments. • Join the exposed (freiliegend, sometimes called free) sections of the sheet stack with at least one closing device.

[0037] The wire winding is applied to the outer periphery of the substrate, particularly from the outside using automated winding techniques, such as flywheel winding, needle winding, or linear winding. For example, the wire winding extends partially over more than one sheet stack section in the periphery direction.

[0038] In another design, the sheet stack segments are embedded by inserting them into a receiving device of the substrate.

[0039] Here, the individual sheet stack segments can be inserted radially or axially into the receiving device of the substrate, for example, by pushing or pressing them in. Due to the shape-fitting design of the receiving device, the sheet stack is then held in the cavity by the receiving device. That is, the manufacturing of the substrate and the embedding of the sheet stack segments are carried out in two separate steps.

[0040] Additionally, it can be configured such that a material bonding agent (e.g., an adhesive) is applied to the receiving device before the sheet stack segment is inserted, so as to secure the sheet stack segment in a non-detachable manner.

[0041] In another alternative design, the embedding of the sheet stack segments is achieved by using the sheet stack segments to form a substrate.

[0042] In other words, the manufacturing of the substrate and the embedding of the sheet stack segments are carried out in the same step.

[0043] If the substrate is manufactured, for example, by an injection molding process, individual sheet stack segments are inserted into an injection mold, and then a flowable material is injected.

[0044] If the substrate is alternatively manufactured via an additive process, after an initial layer is formed on the substrate, sheet stack segments are placed on the precursor of the substrate, and the sheet stack segments are continued to be overmolded by interlocking the layers together until the substrate is fully constructed.

[0045] The application of the wire winding is advantageously performed radially from the outside and along the outer periphery of the assembly.

[0046] In the case of applying wire winding, the winding wire is introduced into the winding space located at the outer periphery of the component to be wound (e.g., stator) by means of a flywheel winding technique (also known as "flying wire"). The winding wire is supplied by rollers or by nozzles at a flywheel, i.e., a rotating disc, which rotates in a defined manner relative to the component. The winding wire is here wound around at least one sheet stack segment isolated by a receiving device. The flywheel can preferably move relative to the component in both the peripheral and radial directions.

[0047] Therefore, no wire winding is applied from the inner periphery of the component. This applies not only to the case where the component is constructed as a rotor, but also to the case where the component is constructed as a stator.

[0048] The invention will be explained in more detail below with reference to the description of embodiments and the illustrative drawings, taking into account other features and advantages. Attached Figure Description

[0049] Figure 1 An embodiment of a rotary transformer with a stator and a rotor is shown; Figure 2 An embodiment of the components of the rotary transformer is shown in an exploded view; Figure 3 An embodiment of the first base portion of the rotary transformer is shown in perspective view; Figure 4 An embodiment of the second base portion of the rotary transformer is shown in perspective view; Figure 5 An embodiment of the sheet stack section is shown in a front view; Figure 6 An embodiment of the closing device is shown in a front view; Figure 7 The first working step for assembling the components of a rotary transformer is shown; Figure 8 It shows the method for transferring from Figure 7 Another working step is to assemble the components of the rotary transformer together; Figure 9 It shows the method for transferring from Figure 7 and 8 Another working step is to assemble the components of the rotary transformer together; Figure 10 A cross-sectional view of the components passing through the rotary transformer is shown. Detailed Implementation

[0050] Specific embodiments of the invention will now be described in more detail with reference to the accompanying drawings.

[0051] Here, Figure 1 A rotary transformer 1 is shown, comprising a stator 3 and a rotor 2, which are arranged concentrically with respect to axis A. In the rotary transformer 1 shown, the stator 3 is constructed in multiple parts, making it feasible to externally wind it during its manufacture, as discussed in more detail below. The rotor 2 shown is merely exemplarily constructed as a rotor core with a varying profile. However, instead... Figure 1 The rotor type shown can be replaced by other rotor types, such as the TypWickelfeld (sometimes called the winding field type), in which the excitation winding is arranged on rotor 2.

[0052] Figure 2 An exploded view shows a stator 3 according to the invention, arranged along axis A. The stator 3 includes a multi-piece base 4.1, 4.2, a sheet stack assembly 5, a closing device assembly 7, and a wire winding 6. Figure 2 (Not shown in the text).

[0053] The matrix consists of a first matrix portion 4.1 and a second matrix portion 4.2 that can be interconnected.

[0054] The sheet stacking segment assembly 5 includes a plurality of sheet stacking segments 5a to 5p, which are arranged concentrically around axis A and at the same distance relative to axis A.

[0055] For better clarity, Figure 2 Not every sheet stack segment has its own reference number. However, it goes without saying that the alphanumeric reference numbers are logically continuous for each continuing sheet stack segment in the peripheral direction U.

[0056] According to the embodiment shown, the closure device assembly 7 includes a plurality of closure devices 7a to 7p, which are concentric about axis A and arranged at the same distance relative to axis A.

[0057] For better clarity, Figure 2 Not every closing device has its own reference designation. However, it goes without saying that the same alphanumeric reference designation is logically continuous for each continuing closing device in the peripheral direction U.

[0058] The stator shown is not limited to Figure 2The number of sixteen sheet stack sections 5a to 5p or sixteen closing devices 7a to 7p presented herein can be adjusted to include more or fewer sheet stack sections or closing devices. In particular, the number of closing devices need not necessarily correspond to the number of sheet stack sections.

[0059] The various components of stator 3 are interconnected in the assembled state. Figures 7 to 9 This will be discussed in more detail within the scope of the manufacturing process.

[0060] Figure 3 and Figure 4 The design of the substrate is shown, which includes first and second substrate portions 4.1, 4.2.

[0061] The first base portion 4.1 is constructed as an annular injection molded part and includes a plurality of axially extending rectangular receiving devices 4.1.1, which extend spaced apart along the entire periphery of the first base portion. Each pair of directly adjacent receiving devices 4.1.1 is approximately U-shapedly connected to each other by bridging members 4.1.5 extending in the circumferential direction U, thereby creating a winding space 8 between them (see...). Figure 10 ).

[0062] The bridging member 4.1.5 extends axially beyond the receiving device 4.1.1 at both ends, and has a radially oriented second tab 4.1.2 at one end and another radially oriented second tab 4.1.3 at the other end. The two second tabs 4.1.2 and 4.1.3 serve as winding space boundaries, or, in combination with the protruding sections of the bridging member 4.1.5, serve as laying channels for those sections of the wire winding 6 oriented in the circumferential direction U.

[0063] The first tab 4.1.4 is configured such that a first tab 4.1.4 exists between two adjacent receiving devices 4.1.1 that are not connected by bridging member 4.1.5. The first tab 4.1.4 is rectangular in construction and extends perpendicularly to the receiving device 4.1.1 in the circumferential direction U. Preferably, the first tab 4.1.4 extends radially beyond the receiving device 4.1.1. Furthermore, the first tab 4.1.4 extends in the circumferential direction U only in the region located between the two adjacent receiving devices 4.1.1 that are not connected by bridging member 4.1.5.

[0064] The radial direction is defined as the direction pointing outward from axis A (center point).

[0065] The receiving device 4.1.1, the bridging element 4.1.5, the first tab 4.1.4, and the second tabs 4.1.2 and 4.2.3 are all constructed in a continuous manner (sometimes referred to as adjacent), so that they together constitute the one-piece first base part 4.1.

[0066] Figure 4 The second base portion 4.2 is shown, which is also constructed as an annular injection molded part and includes a first tab in the form of an annular disk 4.2.0 that is closed in the peripheral direction U. A plurality of second tabs 4.2.2, constructed in a rectangular shape, are arranged at one end of the annular disk 4.2.0 and radially inward. The second tabs 4.2.2 protrude axially perpendicular to the end of the annular disk 4.2.0 and are spaced apart from each other in the peripheral direction U.

[0067] The second base portion 4.2 additionally includes a second tab in the form of an alignment pin 4.2.1, which is arranged axially and perpendicular to the end side on which the second tab 4.2.2 is also located. The alignment pin 4.2.1 is arranged radially outward on the end side of the annular disk 4.2.0. Preferably, each alignment pin 4.2.1 is arranged opposite to the second tab 4.2.2 and centered relative to it in the circumferential direction. Besides Figure 4 In addition to the semi-circular cross-section presented in the middle, the centering pin portion 4.2.1 may also have any other cross-sectional geometry that complements the notches 7.3 of the closing devices 7a to 7p.

[0068] The annular disk 4.2.0, the second tab 4.2.2, and the centering pin 4.2.1 are all constructed in a continuous manner, thus together they constitute the one-piece second base part 4.2.

[0069] The following is in Figure 5 The structure of the sheet stack section 5a shown in the figure is illustrated by way of example, wherein the other sheet stack sections 5b to 5p have the same structure.

[0070] The T-shaped sheet stack section 5a includes a peripheral section 5.1, a connecting section 5.3, and a load-bearing section 5.2 arranged between the peripheral section 5.1 and the connecting section 5.3.

[0071] The bearing section 5.2 is oriented in the radial direction and has an approximately rectangular cross-section. The bearing section 5.2 has a first side 5.2.1 and a second side 5.2.2, which contact the corresponding receiving section 4.1.1 after the sheet stack section 5a is embedded in the substrate 4.1, 4.2.

[0072] A connecting section 5.3 is arranged at the bearing section 5.2, radially outward relative to axis A. The connecting section 5.3 has a first side 5.3.1 and a second side 5.3.2, which serve as contact surfaces for the corresponding closing devices 7a-7p. The first side 5.3.1 and the second side 5.3.2 of the connecting section 5.3 have grooves 5.4.1 and 5.4.2, respectively, which are complementary to one or more pin-like portions 7.1 of the corresponding closing devices 7a-7p. The transition portion 5.3.3 between the first side 5.2.1 of the bearing section 5.2 and the first side 5.3.1 of the connecting section 5.3 is continuously constructed and includes a defined curvature. A corresponding provision applies to the transition portion 5.3.4 between the second side 5.2.2 of the bearing section 5.2 and the second side 5.3.2 of the connecting section 5.3, which also includes a defined curvature. The connecting section 5.3 further has a second side surface 5.3.5, which is arranged between the first side surface 5.3.1 and the second side surface 5.3.2. The second side surface 5.3.5 forms part of the outer peripheral surface of the stator 2 and is curved in the peripheral direction U.

[0073] As from Figure 5 As can be seen, the connecting section 5.3 is constructed to be wider in the peripheral direction U than the bearing section 5.2, that is, the connecting section 5.3 extends beyond the bearing section 5.2.

[0074] The width of connecting segment 5.3 in the peripheral direction U is Figure 5 Reference number B V express.

[0075] Furthermore, a peripheral section 5.1 is arranged at the load-bearing section 5.2, which is curved in the peripheral direction U and extends not only beyond the first side 5.2.2 and the second side 5.2.2 of the load-bearing section 5.2, but also beyond the first side 5.3.1 and the second side 5.3.2 of the connecting section 5.3. The peripheral section 5.1 is arranged radially at the connecting section 5.3 and is closer to the axis A than the connecting section 5.3 or the load-bearing section 5.2. The peripheral section 5.1 has a first side surface 5.1.1, which forms part of the inner peripheral surface of the stator 2. The first side surface 5.1.1 is curved in the peripheral direction U.

[0076] The width of the perimeter segment 5.1 in the perimeter direction U is Figure 5 Reference number B U express.

[0077] As from Figure 5 As can be clearly identified, the width B of the connecting segment 5.3 is... V The width B is less than 5.1 of the perimeter segment. UWith this design of connecting section 5.3, it is feasible to more effectively transfer the magnetic flux absorbed by peripheral section 5.1 to the closing device 7a-7p.

[0078] The sheet stacking section 5a is composed of multiple individual sheets, wherein the individual sheets are... Figure 5 In the direction of the drawing plane (i.e., in) Figure 1 (in the z-direction) stacked. The single sheet of the sheet stack section 5a is stamped from soft magnetic sheet and can have a thickness between 0.1 mm and 1.0 mm.

[0079] In the following text Figure 6 The structure of the closing device 7a according to the present invention is illustrated by taking the closing device 7a shown as an example, wherein the other closing devices 7b-7p have the same structure.

[0080] The closing device 7a is constructed in a ring-shaped sector with respect to its basic shape, and includes a radial first side 7.1.1 and a radial second side 7.1.2, as well as a first side 7.3.1 and a second side 7.3.2 that are bent in the peripheral direction U.

[0081] The first side 7.1.1 and the second side 7.1.2 serve as contact surfaces for the connecting sections 5.3 of the sheet stack segments 5a-5p, respectively. For this purpose, the first side 7.1.1 and the second side 7.1.2 each have one (or more) pin-shaped portions 7.4.1, 7.4.2 that are complementary to the grooves 5.4.1 and 5.4.2 corresponding to the sheet stack segments 5a. The first side 7.3.1 and the second side 7.3.2 are arranged between the first side 7.1.1 and the second side 7.1.2.

[0082] The first side surface 7.3.1 includes a notch 7.3 for receiving the alignment pin 4.2.1 of the second base portion 4.2 (see [link]). Figure 8 and Figure 10 ).

[0083] The second side 7.3.2 is further inward in the radial direction relative to axis A than the first side 7.3.1.

[0084] Closing device 7a consists of multiple along Figure 6 The orientation of the drawing plane (i.e.) Figure 1 It consists of stacked single sheets (in the z-direction). The single sheet of the closing device 7a is stamped from a soft magnetic sheet and may have a thickness between 0.1 mm and 1.0 mm.

[0085] The following should be referred to Figures 7 to 9 The method for manufacturing the stator 3 according to the invention will be discussed in more detail.

[0086] according to Figure 7First, the sheet stack assembly 5 is embedded into the first base portion 4.1 by inserting the individual sheet stack segments 5a to 5p. For this purpose, the individual sheet stack segments 5a to 5p are inserted such that they are received by the receiving device 4.1.1 in a form-fitting and preferably force-fitting manner, and are stopped to prevent slippage. Here, each sheet stack segment 5a to 5p contacts two adjacent receiving devices 4.1.1 in the region of its bearing section 5.2, i.e., by at least partially contacting the first side 5.2.1 and the second side 5.2.2. The individual sheet stack segments 5a to 5p are inserted axially until they abut against the first tab 4.1.4 of the first base portion 4.1.

[0087] Through the receiving device 4.1.1 of the first base portion 4.1, the individual sheet stack segments 5a to 5p are arranged spaced apart from each other in the region of the peripheral section 5.1, that is, there is an air gap between the peripheral sections 5.1 of the individual sheet stack segments 5a to 5p. This results in lower magnetic resistance between sheet stack segment 5a and adjacent sheet stack segments 5b or 5p via at least one closing device 7a to 7p during the operation of the rotary transformer 1, compared to a direct path (i.e., via the gap in the region of the peripheral section 5.1 between sheet stack segments 5a and 5b or 5a and 5p). The same applies, of course, to all other sheet stack segments 5a to 5p relative to each other. In other words, the magnetic field lines guided through the sheet stack segments 5a to 5p are closed by the closing devices 7a to 7p through the air gap, and there is no "shortcut" from one pole to the other in the region of the peripheral section 5.1.

[0088] After the sheet stack assembly 5 is combined with the first base portion 4.1, the windings 6 can be applied via a suitable winding technique (preferably automated). Here, each winding 6 is wound onto the receiving device 4.1.1 and the first tab 4.1.4 in the region of each carrying section 5.2. Figure 7 and Figure 9 (Not shown in the text).

[0089] It is particularly advantageous here that, by means of the sheet stack segments 5a to 5p according to the invention and their arrangement in combination with the first base portion 4.1 to form the sheet stack segment assembly 5, it is feasible to wind from the outside, that is, the filling radial of each winding space 8 is carried out from the outside (outer peripheral surface of the assembly), and not through the inner periphery (inner peripheral surface of the assembly) as is usually the case in the stator.

[0090] As from Figure 8As can be understood, the closure device assembly 7 is embedded in the second base portion 4.2 by inserting the respective closure devices 7a to 7p. For this purpose, each closure device 7a to 7p is inserted into the cavity between the second tab 4.2.2 and the opposing centering pin 4.2.1. Thus, each closure device 7a to 7p abuts against the second tab 4.2.2 with its second side surface 7.3.2, and is aligned and stopped by the centering pin 4.2.1 accommodated in the recess 7.3 to prevent slippage. Each closure device 7a to 7p is inserted axially until it abuts against the annular disc 4.2.0 of the second base portion 4.2.

[0091] Figure 9 The illustration shows the insertion of a first assembly comprising a first base portion 4.1 and a sheet stack segment assembly 5 into a second assembly comprising a second base portion 4.2 and a closing device assembly 7.

[0092] During the insertion process, such as Figure 9 As shown, the connecting section 5.3 of the sheet stack sections 5a to 5p is combined with the closing devices 7a to 7p such that the pins 7.4.1, 7.4.2 of the closing devices 7s to 7p engage with the grooves 5.4.1, 5.4.2 of the sheet stack sections 5a to 5p, for example by press fitting.

[0093] Figure 10 A cross-sectional view through the stator 3 is shown, including the winding 6 arranged in the winding space 8. The winding space 8 is defined in the axial direction by the second tabs 4.1.2 and 4.1.3 of the first base portion 4.1, and in the radial direction by the bridging member 4.1.5 and the second tab 4.2.2 of the second base portion 4.2.

[0094] The invention has been described above with reference to some currently preferred embodiments. However, it is self-evident that other variations and embodiments can be implemented without departing from the appended claims.

[0095] Alternatively, components 2 and 3, in addition to the stator 3, can be a wound-field type rotor 2. In this case, the sheet stack sections 5a to 5p are arranged in reverse radial direction, i.e., the peripheral section 5.1 is located radially outward relative to the axis A, and the connecting section 5.3 is located radially inward. The peripheral section 5.1 of the sheet stack sections 5a to 5p, which is bent in the peripheral direction U, then forms the outer periphery of the rotor 2. The connecting section 5.3 and the at least one closing device 7a to 7p are then located at the inner periphery of the annular rotor 2.

[0096] Reference number list 1. Rotary Transformer 2 rotors 3. Stator 4. Matrix 4.1 First Matrix Part 4.1.1 Receiving device for the first base portion 4.1.2 Second patch of the first substrate portion 4.1.3 Other splices of the first substrate portion 4.1.4 First patch of the first substrate portion 4.1.5 Bridging components of the first base portion 4.2 Second Matrix Part 4.2.0 Annular disk of the second matrix part 4.2.1 Alignment pin portion of the second base part 4.2.2 Second patch of the second substrate 5 Sheet Stacking Section Components 5a-5p Sheet Stacking Section 5.1 Peripheral section of the sheet stacking section 5.1.1 First side of the sheet stack section 5.2 Load-bearing section of the sheet assembly section 5.2.1 First side of the load-bearing section 5.2.2 The second side of the load-bearing section 5.3 Connecting section of sheet stacking section 5.3.1 First side of the connecting section 5.3.2 The second side of the connecting section 5.3.3 First Transition Section 5.3.4 Second Transition Section 5.3.5 Second side of the sheet stack section 6. Wire winding 7 Closure device assembly 7a-7p Closure device 7.1.1 First side of the closing device 7.1.2 The second side of the closing device 7.3 Notch of the closing device 7.3.1 First side of the closing device 7.3.2 The second side of the closing device 7.4.1 First pin portion of the closing device 7.4.2 The second pin-shaped part of the closing device 8 Winding Space Axis A U Peripheral Direction B V Width of connecting sections B U Width of the perimeter section R U The radius of the perimeter section; R M,I The radius of the outer circumference of the substrate.

Claims

1. An assembly (2,3) for a rotary transformer (1), comprising a base (4.1,4.2) arranged along an axis (A), a plurality of sheet stack sections (5a-5p) and wire windings (6), and at least one closing device (7a-7p) connected to said sheet stack sections (5a-5p). in, The substrate (4.1, 4.2) has a ring-shaped structure and a receiving device (4.1.1) along its inner periphery. The sheet stacked sections (5a-5p) are shaped to fit into the receiving device. A winding space (8) is arranged between the receiving device (4.11) at the outer periphery of the base (4.1, 4.2), and the wire winding (6) extends partially within the winding space.

2. The component according to claim 1, wherein, The component (3) is the stator of the rotary transformer (1).

3. The component according to at least one of the preceding claims, wherein, The substrate (4.1, 4.2) has at least one tab (4.1.2, 4.1.3, 4.1.4, 4.2.2) extending in the circumferential direction (U) at at least one of its end sides, the tab having a radial and / or axial directional component.

4. The component according to at least one of the preceding claims, wherein, The substrate (4) is multi-part and formed of a non-magnetic material.

5. The component according to at least one of the preceding claims, wherein, The substrate (4.1, 4.2) is manufactured by injection molding or additive manufacturing.

6. The component according to at least one of the preceding claims, wherein: • The sheet stack sections (5a-5p) each have a peripheral section (5.1) located radially inward, a connecting section (5.3) located radially outward, and a load-bearing section (5.2) arranged therebetween. • The closing device (7a-7p) has connecting devices (7.4.1, 7.4.2), which are complementary to the connecting sections (5.13, ...) of the sheet stacking section (5.10). • The connecting section (5.3) of the sheet stack section (5a-5p) and the connecting device (7.4.1, 7.4.2) of the closing device (7a-7p) are joined together.

7. The component according to claim 6, wherein, The sheet stacked sections (5a-5p) are constructed such that the width (B) of the connecting section (5.3) is... Z The width (B) of the peripheral segment (5.1) is smaller than that of the peripheral segment (5.1). U ).

8. The component according to at least one of the preceding claims, wherein, The at least one closing device (7a-7p) is constructed as a sheet stack and is either constructed as a ring closed on the periphery or includes multiple ring segments.

9. The component according to claims 6 and 8, wherein, Each ring segment of the at least one closing device (7a-7p) is connected in the peripheral direction (U) to two connecting sections (5.3) of the sheet stack segment (5a-5p).

10. The component of claim 6, wherein, The sheet stacked sections (5a-5p) are embedded in the substrate (4.1) such that the peripheral section (5.1) and the substrate (4.1) form a flat surface, and the substrate (4.1) extends to the load-bearing section (5.2) of the sheet stacked sections (5a-5p).

11. The component according to claim 3, wherein, The substrate (4.1, 4.2) has a plurality of first tabs (4.1.4) and a plurality of second tabs (4.1.2, 4.1.3) with radial direction components, wherein the first tabs and the second tabs (4.1.4; 4.1.2, 4.1.3) are arranged alternately along the peripheral direction (U).

12. A method for manufacturing a rotary transformer (1), the rotary transformer comprising two assemblies (2,3) rotatable relative to each other about an axis (A), wherein, To manufacture at least one of the components (2,3), the following steps are performed: • The sheet stack segments (5a-5p) are at least partially embedded in a matrix (4.1) constructed by injection molding or additive manufacturing. • The wire winding (6) is applied to the outer periphery of the substrate (4.1) within the winding space (8) between the sheet stack sections (55a-5p). • The exposed sections of the sheet stack (55a-5p) are joined together with at least one closing device (7a-7p).

13. The method according to claim 12, wherein, The sheet stack segments (5a-5p) are embedded by inserting them into the receiving device (4.1.1) of the substrate (4.1).

14. The method according to claim 12, wherein, The embedding of the sheet stack segments (5a-5p) is achieved by overmolding the substrate (4.1, 4.2) using the sheet stack segments (5a-5p).

15. The method according to at least one of claims 12 to 14, wherein, The wire winding (6) is applied radially from the outside and along the outer periphery of the components (2,3).

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