A magnetic reluctance resolver

Abstract

The utility model belongs to the field of rotary transformer, especially relates to a reluctance type rotary transformer, a reluctance type rotary transformer, it includes the stator core of circular, still includes the retainer connected with stator core, still includes upper protection board and lower protection cover, the edge of upper protection cover and lower protection cover be equipped with a plurality of connecting lug, be equipped with the connecting through -hole on connecting lug, the connecting lug of upper protection cover and lower protection cover combination forms a connecting portion at the side of stator core, the utility model discloses the improvement to the upper protection cover and lower protection cover of rotary transformer, through the connecting lug on upper protection cover and lower protection cover to assemble and form a connecting portion, realize the installation fixed of rotary transformer through connecting portion to reduce the cost of product, also convenient according to the demand of different customer to carry out the quick response, reduce the cost of response.

Description

Technical Field

[0001] This utility model belongs to the field of rotary transformers, and specifically relates to a reluctance rotary transformer. Background Technology

[0002] A rotary transformer is an electromagnetic sensor used to measure the angular displacement and angular velocity of a rotating object's axis. In recent years, it has been increasingly applied to oil-cooled motors in new energy vehicles.

[0003] CN110798003A is a rotary transformer, which includes a stator. The stator extends to form an extension, and the rotary transformer is installed and fixed through the extension of the stator. It can be seen that the existing technology mainly uses the stator to fix the rotary transformer. The manufacturing cost of stator lamination is high, which affects the cost of the product. At the same time, when different customers have different requirements, the stator lamination needs to be modified. The cost of redesign and reproduction is high, which is not conducive to quickly responding to the needs of different customers. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention designs a reluctance rotary transformer. The upper and lower protective covers of the rotary transformer are improved by using connecting lugs on the upper and lower protective covers to form a connecting part. This connecting part enables the rotary transformer to be installed and fixed, thereby reducing product costs and facilitating rapid response to different customer needs, further lowering costs.

[0005] The technical solution of this utility model is as follows: A reluctance rotary transformer includes a circular stator core and a cage connected to the stator core. The transformer is characterized by further including an upper protective plate and a lower protective cover. The edges of the upper and lower protective covers are provided with multiple connecting lugs, each lug having a connecting through hole. The connecting lugs of the upper and lower protective covers combine on the side of the stator core to form a connecting portion.

[0006] Furthermore, the upper and lower protective covers are provided with three connecting ears on their edges, and the three connecting ears are evenly distributed.

[0007] Furthermore, a metal bushing is provided inside the connecting through hole.

[0008] Furthermore, the side of the cage extends to form a wiring platform, and also includes a connector disposed at the end of the wiring platform. A wiring cover extends from the upper protective cover and covers the wiring platform.

[0009] Furthermore, the lower part of both ends of the wiring cover is provided with elastic clamps, and the elastic clamps are provided with locking holes. The side of the wiring platform is provided with locking protrusions. When the wiring cover covers the wiring platform, the locking holes of the elastic clamps cooperate with the locking protrusions of the wiring platform.

[0010] Furthermore, the connecting lug includes a connecting plate connected to the lower edge of the side of the upper or lower protective cover. One end of the connecting plate is connected to a connecting block. The upper surface of the connecting block is flush with the upper surface of the connecting plate. The thickness of the connecting block is greater than the thickness of the connecting plate. The end face of the connecting block located below the connecting plate is arc-shaped, and the arc-shaped end face of the connecting block is in close contact with the surface of the stator core.

[0011] Furthermore, the distance from the lower end of the connecting plate to the lower end of the connecting block is half the thickness of the stator core.

[0012] In summary, this utility model has the following beneficial effects: This invention improves the upper and lower protective covers of the rotary transformer by assembling a connecting part through the connecting ears on the upper and lower protective covers. The rotary transformer is installed and fixed through the connecting part, thereby reducing the product cost and facilitating quick response to different customer needs, thus reducing the corresponding cost. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a front view schematic diagram of the present utility model; Figure 3 This utility model is based on Figure 2 A three-dimensional schematic diagram of a partial section at point AA in the middle; Figure 4 This is a three-dimensional schematic diagram of the upper protective cover of this utility model; In the diagram, 1 is the stator core, 2 is the cage, 3 is the upper protective cover, 4 is the lower protective cover, 5 is the connecting lug, 50 is the connecting through hole, 51 is the metal bushing, 6 is the connecting part, 20 is the wiring platform, 21 is the plug, 30 is the wiring cover plate, 301 is the elastic clamp, 302 is the locking hole, 201 is the locking protrusion, 50 is the connecting plate, 51 is the connecting block, and 7 is the rotor. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0015] It should be noted that when a component is referred to as being "set on" or "fixed to" another component, it can be directly on the other component or there may be an intermediate component. When a component is referred to as being "fixed to" another component, or "fixedly connected" to another component, the fixing method can be detachable or non-detachable. When a component is considered to be "connected" or "rotatably connected" to another component, it can be directly connected to the other component or there may be an intermediate component. The terms "vertical," "horizontal," "left," "right," "upper," "lower," and similar expressions used are for illustrative purposes only and do not represent the only possible implementation.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0017] In this invention, terms such as "first," "second," and "third" are used not to represent specific quantities or orders, but merely to distinguish names.

[0018] See Figure 1 As shown, a reluctance rotary transformer includes a circular stator core 1, a rotor 7 located at the center of the stator core, a retainer 2 connected to the stator core, an upper protective plate 3, and a lower protective cover 4. The edges of the upper and lower protective covers 3 and 4 are provided with multiple connecting lugs 5, and the connecting lugs 5 are provided with connecting through holes 50. The connecting lugs of the upper and lower protective covers are combined on the side of the stator core to form a connecting part 6.

[0019] This invention improves the reluctance rotary transformer. Specifically, it improves the upper and lower protective covers by adding connecting lugs with connecting holes. The connecting lugs of the upper and lower protective covers can be combined to form a connection part, which is used to fix the rotary transformer to the motor. This invention changes the connection structure between the rotary transformer and the motor, which has a better cost advantage compared to the existing technology of setting connecting lugs on the stator core. Furthermore, when different customers change the installation method of the rotary transformer, there is no need to adjust the stator core; only the upper and lower protective covers need to be adjusted, which facilitates quick response and reduces costs.

[0020] In one embodiment of this utility model, the edges of the upper protective cover 3 and the lower protective cover 4 are provided with three connecting ears 5, and the three connecting ears are evenly distributed. Multiple connecting ears are used to fix the rotary transformer, thereby improving the reliability of the connection between the rotary transformer and the motor.

[0021] The connecting through hole 50 is provided with a metal bushing 51. The metal bushing is used to improve the reliability of the connection. During the connection process by fasteners, the metal bushing is the main force-bearing component, ensuring that the connection will not be damaged by force.

[0022] For easier arrangement of the stator winding conductors, see [reference needed]. Figure 2 and Figure 3 As shown, the cage 2 extends to form a wiring platform 20 on its side, and also includes a connector 21 disposed at the end of the wiring platform 20. The upper protective cover 3 extends to form a wiring cover plate 30, which covers the wiring platform 20. Specifically, the wiring platform is provided with a plurality of pins. One end of the pin is connected to the winding of the stator, and the other end is connected to the terminal inside the connector. The connector facilitates electrical connection with the outside through standard connectors. The upper protective cover protects the winding of the stator, and the wiring cover plate protects the connection between the pin and the stator winding, preventing the connection between the pin and the stator winding from being impacted by the outside, and also preventing foreign objects from entering, thus ensuring the reliability of the equipment operation.

[0023] The lower portions of both ends of the wiring cover 30 along its length are respectively provided with elastic clamps 301, and the elastic clamps are provided with locking holes 302. The side of the wiring platform 20 is provided with locking protrusions 201. When the wiring cover covers the wiring platform, the locking holes of the elastic clamps cooperate with the locking protrusions of the wiring platform. The locking protrusions and locking holes cooperate to connect the wiring cover and the wiring platform, improving the reliability of the connection between the two and preventing the wiring cover from shaking and generating noise during motor operation.

[0024] The specific structure of the connecting ear will be described next; see [link / reference]. Figure 4 As shown, the connecting ear 5 includes a connecting plate 50 connected to the lower edge of the side of the upper or lower protective cover. One end of the connecting plate 50 is connected to a connecting block 51. The upper surface of the connecting block 51 is flush with the upper surface of the connecting plate. The thickness of the connecting block 51 is greater than the thickness of the connecting plate 50. The end face of the connecting block 51 located below the connecting plate 50 is arc-shaped. The arc-shaped end face of the connecting block 51 is in close contact with the surface of the stator core. The specific structure of the connecting ear is described here. Through the structural design of the connecting plate and the connecting block, and the arc-shaped end face of the connecting block, the positioning of the upper protective cover, the lower protective cover and the stator core is realized, which facilitates assembly by the assembly personnel.

[0025] Preferably, the distance from the lower end of the connecting plate to the lower end of the connecting block is half the thickness of the stator core. By limiting the above dimensions, it is ensured that there is no gap between the connecting ears of the upper and lower protective covers, thereby reducing the stress on the connecting ears and improving the service life of the product.

[0026] In summary, this utility model has the following beneficial effects: This invention improves the upper and lower protective covers of the rotary transformer by assembling a connecting part through the connecting ears on the upper and lower protective covers. The rotary transformer is installed and fixed through the connecting part, thereby reducing the product cost and facilitating quick response to different customer needs, thus reducing the corresponding cost.

[0027] Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A reluctance rotary transformer, comprising a circular stator core and a cage connected to the stator core, characterized in that: It also includes an upper protective cover and a lower protective cover. The edges of the upper and lower protective covers are provided with multiple connecting ears, and the connecting ears are provided with connecting through holes. The connecting ears of the upper and lower protective covers are combined on the side of the stator core to form a connecting part.

2. A reluctance rotary transformer according to claim 1, characterized in that: The upper and lower protective covers are provided with three connecting ears on their edges, and the three connecting ears are evenly distributed.

3. A reluctance rotary transformer according to claim 1, characterized in that: A metal bushing is provided inside the connecting through hole.

4. A reluctance rotary transformer according to claim 1, characterized in that... The cage extends to form a wiring platform on its side and includes a connector at the end of the wiring platform. A wiring cover extends to form a wiring cover plate on the upper protective cover and covers the wiring platform.

5. A reluctance rotary transformer according to claim 4, characterized in that: The lower part of each end of the wiring cover is provided with an elastic clamp plate, and the elastic clamp plate is provided with a locking hole. The side of the wiring platform is provided with a locking protrusion. When the wiring cover plate covers the wiring platform, the locking hole of the elastic clamp plate cooperates with the locking protrusion of the wiring platform.

6. A reluctance rotary transformer according to claim 1, characterized in that: The connecting lug includes a connecting plate connected to the lower edge of the side of the upper or lower protective cover. One end of the connecting plate is connected to a connecting block. The upper surface of the connecting block is flush with the upper surface of the connecting plate. The thickness of the connecting block is greater than the thickness of the connecting plate. The end face of the connecting block located below the connecting plate is arc-shaped and is in close contact with the surface of the stator core.

7. A reluctance rotary transformer according to claim 6, characterized in that: The distance from the lower end of the connecting plate to the lower end of the connecting block is half the thickness of the stator core.

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