A resolver

Abstract

This utility model belongs to the field of rotary transformers, and specifically relates to a rotary transformer with convenient wiring and high yield. It includes a stator of the rotary transformer, a cage connected to the stator, and a wiring section connected to the cage. The wiring section has several terminals, one end of which protrudes from the upper surface of the wiring section, and the other end protrudes from the side end of the wiring section. Each terminal protruding from the side end of the wiring section has a crimping portion at its tail end, which is used to crimp and fix cables. This utility model improves the rotary transformer wiring terminals by using cold-pressed terminals to connect the rotary transformer to cables, improving product yield, reducing scrap rate, and thus reducing production costs.

Description

Technical Field

[0001] This utility model belongs to the field of rotary transformers, and specifically relates to a rotary transformer that is easy to wire and has a high yield rate. Background Technology

[0002] The stator winding of a rotary transformer needs to be electrically connected to an external device via wires. Currently, the terminals of the rotary transformers produced by our company are connected to the cables by ultrasonic welding. Although the products produced by this process have good reliability, the yield rate of the production line is low and the scrap rate is high, resulting in increased production costs. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention improves the terminal block of the rotary transformer by using cold-pressed terminals to connect the rotary transformer to the cable, thereby improving product yield, reducing scrap rate, and thus lowering production costs.

[0004] The technical solution of this utility model is as follows:

[0005] A rotary transformer includes a stator and a cage connected to the stator. The transformer is characterized by further including a wiring section connected to the cage. The wiring section has a plurality of terminals, one end of which protrudes from the upper surface of the wiring section, and the other end of which protrudes from the side end of the wiring section. Each terminal protruding from the side end of the wiring section has a crimping portion at its tail end, the crimping portion being used to crimp and fix cables.

[0006] Furthermore, the crimping portions of the adjacent terminals are staggered.

[0007] Furthermore, it also includes an upper cover plate, which covers the wiring part and the wiring terminals exposed on the side of the wiring part. The two sides of the upper cover plate are connected to side plates, and the side plates are provided with locking holes. The side wall of the wiring part is provided with locking bosses. When the upper cover plate is assembled with the wiring part, the locking holes and locking bosses cooperate.

[0008] Furthermore, the wiring part is provided with limiting bosses on both sides. The limiting bosses include a first limiting plane lower than the upper surface of the wiring part and a second limiting plane intersecting with the first limiting plane. The front end of the side plate is provided with a notch with intersecting third and fourth limiting planes. When the upper cover plate is connected to the wiring part, the third limiting plane is in close contact with the first limiting plane, and the second limiting plane is in close contact with the fourth limiting plane.

[0009] Furthermore, it also includes a lower guard plate, which has vertical end plates at both ends. The lower guard plate is located below the wiring terminals and is connected to the inner wall of the side plate of the upper cover plate through the end plates.

[0010] Furthermore, the upper cover plate has a tail plate at its rear end, and the tail plate has a wire groove corresponding to the wiring terminal. The lower guard plate also has a corresponding wire embedding boss, and the wire embedding boss has a wire embedding groove. After the lower guard plate is connected to the upper cover plate, the wire embedding groove of the wire embedding boss and the wire groove of the tail plate cooperate to clamp and fix the cable.

[0011] In summary, this utility model has the following beneficial effects:

[0012] 1. This utility model improves the rotary transformer. By modifying the terminal block, the connection between the terminal block and the wiring section, as well as the position of the end and the direction of the outgoing wire, are consistent with existing rotary transformers, reducing the impact of structural modifications on the production line. At the same time, this utility model improves the structure of the connection between the tail of the terminal block and the cable by adding a crimping part. The crimping part consists of two pressure plates integrally formed with the terminal block. The cable is placed on the terminal block between the two pressure plates, and then the pressure plates are bent and deformed to crimp the cable, realizing the connection between the cable and the terminal block. The connection process of the cable through the crimping part is mature, and the product yield is improved, thereby solving the problems of low yield and high scrap rate caused by the use of ultrasonic welding in the prior art.

[0013] 2. Furthermore, the crimping portions of adjacent terminals are staggered, ensuring the dimensions of each crimping portion and thus better guaranteeing the reliability of the connection between the crimping portion and the cable. Furthermore, the staggered arrangement of the crimping portions provides ample operating space on the sides of each crimping portion, facilitating crimping operations. Even further, the staggered arrangement of the crimping portions allows for better control of the width of the multiple terminals, significantly reducing the width compared to crimping portions arranged in a straight line. This ensures that the width of the wiring portion is controlled, preventing changes in the terminal structure from affecting the product dimensions.

[0014] 3. After the upper cover plate and lower guard plate of this utility model are connected, the wire embedding groove of the wire embedding boss and the wire groove of the tail plate cooperate to clamp and fix the cable. After the wire groove and the wire embedding groove cooperate, the cable can be held in place, preventing the cable from shaking and being transmitted to the crimping point between the cable and the connecting terminal, thus ensuring the reliability of the crimping between the cable and the connecting terminal. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0016] Figure 2 This is a three-dimensional schematic diagram of the present invention (excluding the upper cover plate and the lower guard plate);

[0017] Figure 3 This is a three-dimensional schematic diagram of the top cover plate of this utility model;

[0018] Figure 4 This is a three-dimensional schematic diagram of the lower guard plate of this utility model;

[0019] 1 in the diagram is the stator.

[0020] 2 is the retainer, 20 is the wiring part, 203 is the locking boss, 22 is the limiting boss, 220 is the first limiting plane, and 221 is the second limiting plane.

[0021] 3 is the wiring terminal, and 30 is the crimping part.

[0022] 4 is the top cover plate, 40 is the side plate, 41 is the latch hole, 42 is the notch, 420 is the third limiting plane, 421 is the fourth limiting plane, 401 is the groove, 43 is the tail plate, and 430 is the wire groove.

[0023] 5 is the lower guard plate, 50 is the end plate, 501 is the raised ridge, 51 is the wire embedding boss, and 510 is the wire embedding groove.

[0024] 8 represents cables. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] In this invention, terms such as "first," "second," and "third" are used not to represent specific quantities or orders, but merely to distinguish names.

[0029] See Figure 1 and Figure 2 As shown, a rotary transformer includes a stator 1 and a cage 2 connected to the stator 1, and a wiring portion 20 connected to the cage. The wiring portion is a platform extending from the cage. The wiring portion 20 of the cage is provided with a plurality of terminals 3. The terminals are embedded in the wiring portion. Specifically, the terminals are injection molded in the wiring portion. One end of the terminal 3 is exposed on the upper surface 201 of the wiring portion, and the other end of the terminal 3 is exposed on the side end 202 of the wiring portion. The tail of the terminal 3 exposed on the side end of the wiring portion is provided with a crimping portion 30. The crimping portion is used to crimp and fix the cable 8.

[0030] This invention improves upon existing rotary transformers. Specifically, it modifies the terminal block, ensuring the connection between the terminal block and the wiring section, as well as the end position and cable direction, remain consistent with existing rotary transformers, reducing the impact of structural modifications on production lines. Furthermore, it improves the connection structure between the terminal block's tail and the cable by adding a crimping section. This crimping section consists of two integrally formed pressure plates with the terminal block. The cable is placed on the terminal block between the two pressure plates, and the pressure plates are bent and deformed to crimp the cable, thus connecting the cable to the terminal block. This crimping connection technology is mature and improves product yield, thereby solving the problems of low yield and high scrap rate caused by ultrasonic welding in existing technologies.

[0031] Further, see Figure 2 As shown, the crimping portions 30 of adjacent terminals are staggered front to back. Here, "front to back" refers to the side end of the crimping portion. The side end of the crimping portion closest to the terminal is considered "front," and the side end of the crimping portion closest to the terminal is considered "back." The staggered arrangement of the crimping portions of adjacent terminals ensures the size of each crimping portion, thereby better guaranteeing the reliability of the connection between the crimping portion and the cable. Furthermore, the staggered arrangement of the crimping portions provides a larger operating space on the side of each crimping portion, facilitating crimping operations. Moreover, the staggered arrangement of the crimping portions allows for better control of the width of the multiple terminals. Compared to crimping portions arranged in a straight line, the width is significantly reduced, thus controlling the width of the terminals and preventing changes in the terminal structure from affecting the product size.

[0032] To provide protection for the connection between the terminal block and the stator winding, an upper cover plate 4 is also included. The upper cover plate 4 covers the wiring part and the terminal block exposed on the side of the wiring part. Side plates 40 are connected to both sides of the upper cover plate 4. The side plates are provided with locking holes 41. The side wall of the wiring part 20 is provided with locking bosses 203. When the upper cover plate is assembled with the wiring part, the locking holes and locking bosses cooperate.

[0033] The wiring portion 20 is provided with limiting protrusions 22 on both sides. Each limiting protrusion 22 includes a first limiting plane 220 lower than the upper surface of the wiring portion and a second limiting plane 221 intersecting with the first limiting plane 220. The included angle between the first limiting plane and the second limiting plane is greater than or equal to 90°. In this embodiment, the first limiting plane and the second limiting plane intersect perpendicularly. The front end of the side plate 40 is provided with a notch 42. The notch has intersecting third limiting plane 420 and fourth limiting plane 421. When the upper cover plate is connected to the wiring portion, the third limiting plane is in close contact with the first limiting plane, and the second limiting plane is in close contact with the fourth limiting plane. The first limiting plane, the second limiting plane, the third limiting plane and the fourth limiting plane are used to limit the upper cover plate in two directions, thereby ensuring the reliability of the upper cover plate after it is connected to the wiring portion and preventing it from falling off easily.

[0034] It also includes a lower guard plate 5, which has vertical end plates 50 at both ends. The lower guard plate 5 is located below the terminal block and is connected to the inner wall of the side plate 40 of the upper cover plate 4 through the end plates 50. Since the terminal block is exposed on the side of the wiring part, the bottom of the terminal block is not protected after being covered by the upper cover plate. Therefore, a lower guard plate is added. The lower guard plate is located below the terminal block and is connected and fixed to the side plate of the upper guard plate through the end plates. The end plates and the side plates are provided with a snap-fit ​​structure. The connection between the lower guard plate and the upper cover plate is realized through the cooperation of the snap-fit ​​structure. Specifically, the surface of the end plate has at least one protruding ridge 501 along the width direction of the end plate, and the inner wall surface of the side plate 40 is provided with a matching groove 401. The protruding ridge and the groove cooperate to realize the connection between the upper cover plate and the lower guard plate.

[0035] The upper cover plate 4 has a tail plate 43 at its rear end, and the tail plate 43 has a wire groove 430 corresponding to the wiring terminal. The lower guard plate 5 also has a corresponding wire embedding boss 51, and the wire embedding boss 51 has a wire embedding groove 510. After the lower guard plate is connected to the upper cover plate, the wire embedding groove of the wire embedding boss and the wire groove of the tail plate cooperate to clamp and fix the cable. After the wire groove and the wire embedding groove cooperate, the cable can be held in place, preventing the cable from shaking and being transmitted to the crimping point between the cable and the connecting terminal, thus ensuring the reliability of the crimping between the cable and the connecting terminal.

[0036] In summary, this utility model has the following beneficial effects:

[0037] 1. This utility model improves the rotary transformer. By modifying the terminal block, the connection between the terminal block and the wiring section, as well as the position of the end and the direction of the outgoing wire, are consistent with existing rotary transformers, reducing the impact of structural modifications on the production line. At the same time, this utility model improves the structure of the connection between the tail of the terminal block and the cable by adding a crimping part. The crimping part consists of two pressure plates integrally formed with the terminal block. The cable is placed on the terminal block between the two pressure plates, and then the pressure plates are bent and deformed to crimp the cable, realizing the connection between the cable and the terminal block. The connection process of the cable through the crimping part is mature, and the product yield is improved, thereby solving the problems of low yield and high scrap rate caused by the use of ultrasonic welding in the prior art.

[0038] 2. Furthermore, the crimping portions of adjacent terminals are staggered, ensuring the dimensions of each crimping portion and thus better guaranteeing the reliability of the connection between the crimping portion and the cable. Furthermore, the staggered arrangement of the crimping portions provides ample operating space on the sides of each crimping portion, facilitating crimping operations. Even further, the staggered arrangement of the crimping portions allows for better control of the width of the multiple terminals, significantly reducing the width compared to crimping portions arranged in a straight line. This ensures that the width of the wiring portion is controlled, preventing changes in the terminal structure from affecting the product dimensions.

[0039] 3. After the upper cover plate and lower guard plate of this utility model are connected, the wire embedding groove of the wire embedding boss and the wire groove of the tail plate cooperate to clamp and fix the cable. After the wire groove and the wire embedding groove cooperate, the cable can be held in place, preventing the cable from shaking and being transmitted to the crimping point between the cable and the connecting terminal, thus ensuring the reliability of the crimping between the cable and the connecting terminal.

[0040] 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 resolver comprising a stator of a resolver, and a retainer connected to the stator, characterized by: It also includes a wiring section connected to the cage, the wiring section having a plurality of terminals, one end of the terminals protruding from the upper surface of the wiring section, the other end of the terminals protruding from the side end of the wiring section, and the tail of each terminal protruding from the side end of the wiring section having a crimping part, the crimping part being used to crimp and fix the cable.

2. A resolver according to claim 1, characterized in that: The crimping portions of adjacent terminals are staggered.

3. A resolver according to claim 1, characterized in that: It also includes an upper cover plate, which covers the wiring part and the wiring terminals exposed on the side of the wiring part. The two sides of the upper cover plate are connected to side plates, and the side plates are provided with locking holes. The side wall of the wiring part is provided with locking bosses. When the upper cover plate is assembled with the wiring part, the locking holes and locking bosses cooperate.

4. A resolver according to claim 3, characterized in that: The wiring part is provided with limiting bosses on both sides. Each limiting boss includes a first limiting plane lower than the upper surface of the wiring part and a second limiting plane intersecting with the first limiting plane. The front end of the side plate is provided with a notch with intersecting third and fourth limiting planes. When the upper cover plate is connected to the wiring part, the third limiting plane is in close contact with the first limiting plane, and the second limiting plane is in close contact with the fourth limiting plane.

5. A resolver according to claim 3, characterized in that: It also includes a lower guard plate, which has vertical end plates at both ends. The lower guard plate is located below the wiring terminals and is connected to the inner wall of the side plate of the upper cover plate through the end plates.

6. A resolver according to claim 5, characterized in that: The upper cover plate is provided with a tail plate at its rear end, and the tail plate is provided with a wire groove corresponding to the wiring terminal. The lower guard plate is also provided with a corresponding wire embedding boss, and the wire embedding boss is provided with a wire embedding groove. After the lower guard plate is connected to the upper cover plate, the wire embedding groove of the wire embedding boss and the wire groove of the tail plate cooperate to clamp and fix the cable.

Images