A mounting structure for a resolver stator

Abstract

The utility model discloses a kind of installation structures for the stator of rotary transformer, relate to rotary transformer technical field.Its technical scheme main point is: including bush, stator and end cover, the bush circumferential inner wall is equipped with annular groove for placing stator, the circumferential side wall of the stator is equipped with several evenly distributed limit slots, the bottom of annular groove is provided with several limit rods inserted in limit slot, and the stator is fixedly connected to the bottom of annular groove by fixing part.The utility model aims at providing a kind of installation structures for the stator of rotary transformer.

Description

Technical Field

[0001] This utility model relates to the field of resolver technology, and more specifically, to a mounting structure for a resolver stator. Background Technology

[0002] A rotary transformer is an electromagnetic sensor, also known as a synchrotron. It is a small AC motor used to measure the angular displacement and angular velocity of a rotating object's shaft, and consists of a stator and a rotor.

[0003] In the existing technology, when assembling a resolver, a clamping method is usually adopted by adding a stop on the outer cover. It is difficult to ensure the concentricity of the stator during the assembly process, which affects the measurement accuracy of the resolver. This assembly method is difficult to control in terms of axial dimensions, and uneven clamping force can easily lead to deformation and damage of the resolver stator.

[0004] Therefore, a new technical solution is urgently needed to solve the above-mentioned technical problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an installation structure for the stator of a resolver.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an installation structure for a resolver stator, including a bushing, a stator and an end cover, wherein the inner circumferential wall of the bushing is provided with an annular groove for placing the stator, and the circumferential side wall of the stator is provided with a plurality of evenly distributed limiting grooves, wherein the bushing is provided with a plurality of limiting rods inserted into the limiting grooves at the bottom of the annular groove, and the stator is fixedly connected to the bottom of the annular groove by a fixing member.

[0007] The present invention is further configured such that: a sliding groove is provided on the inner wall of the bottom of the annular groove along the radial direction of the bushing; the limiting rod is slidably connected to the sliding groove; an insertion part is provided at the end of the limiting rod extending out of the sliding groove; a slot for inserting the insertion part is provided on the inner wall of the end of the limiting groove of the stator; and a driving component for controlling the sliding of the limiting rod is also included.

[0008] The present invention is further configured such that: a tension spring is fixedly connected between the inner wall of the end of the sliding groove and the end of the limiting rod, and the driving component is used to drive the limiting rod to slide toward the slot.

[0009] The present invention is further configured such that: the end face of the bushing facing the end cap is provided with a plurality of through grooves corresponding to and perpendicular to the sliding groove, the through grooves are connected to the sliding groove; the driving component includes a plurality of driving rods fixedly connected to the surface of the end cap and inserted into the through grooves; the bottom of the side surface of the driving rod facing the slot is provided with a first inclined surface; the surface of the limiting rod is provided with a triangular groove, the triangular groove including a second inclined surface parallel to and abutting against the first inclined surface.

[0010] The present invention is further configured such that: the stator is provided with a through hole between two adjacent limiting grooves, the bottom of the annular groove is provided with a plurality of screw holes that fit into the through hole, and the fixing member includes a first bolt disposed in the through hole and the screw hole.

[0011] The present invention is further configured such that: a connecting groove is provided vertically and communicating with the through groove on one side of the bushing; a positioning rod is slidably connected in the connecting groove; one end of the positioning rod extends into the through groove and a third inclined surface is provided on the side facing the end cap; a spring is fixedly connected between the other end of the positioning rod and the inner wall of the end of the connecting groove; and a positioning groove for insertion is provided on the side of the driving rod facing the positioning rod.

[0012] The present invention has the following beneficial effects: 1. During installation, the stator is placed in the annular groove so that the limiting rod is inserted into the corresponding limiting groove, thereby ensuring its installation accuracy. It is then fixed by the first bolt to improve the concentricity of the stator after installation, so as to ensure the measurement accuracy of the final resolver.

[0013] 2. The stator is fixed by the evenly arranged first bolts to ensure the uniformity of the clamping force on the stator, thereby reducing damage to the stator and extending its service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a half-section structure in this embodiment;

[0015] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0016] Figure 3 This is a schematic diagram of a half-section of the stator in this embodiment;

[0017] Figure 4 This is a schematic diagram of the bushing structure in this embodiment;

[0018] Figure 5 for Figure 3 A magnified view of part B in the middle section;

[0019] Figure 6 This is a schematic diagram of the limiting rod in this embodiment;

[0020] Figure 7 This is a schematic diagram of the drive rod structure in this embodiment;

[0021] Figure 8 This is a schematic diagram of the positioning rod in this embodiment.

[0022] Figure descriptions: 1. Bushing; 2. Stator; 3. End cap; 4. Limiting groove; 5. Limiting rod; 6. Through hole; 7. Screw hole; 8. First bolt; 9. Annular groove; 10. Sliding groove; 11. Insertion part; 12. Slot; 13. Tension spring; 14. Through groove; 15. Drive rod; 16. First inclined surface; 17. Triangular groove; 18. Second inclined surface; 19. Connecting groove; 20. Positioning rod; 21. Third inclined surface; 22. Spring; 23. Positioning groove; 24. Second bolt. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings.

[0024] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0025] As shown in the figure, an installation structure for a resolver stator includes a bushing 1, a stator 2, and an end cap 3. The inner circumference of the bushing 1 has an annular groove 9 for placing the stator 2. The circumference of the stator 2 has several evenly distributed limiting grooves 4. The bushing 1 has several limiting rods 5 inserted into the limiting grooves 4 at the bottom of the annular groove. The stator 2 is fixedly connected to the bottom of the annular groove 9 by a fastener. The stator 2 has a through hole 6 between two adjacent limiting grooves 4. The through holes 6 are evenly distributed on the surface of the stator 2 along the circumference. The bottom of the annular groove 9 has several screw holes 7 that fit into the through holes 6. The fastener includes a first bolt 8 set in the through hole 6 and the screw hole 7.

[0026] During installation, the stator 2 is placed in the annular groove 9, so that the limiting rod 5 is inserted into the corresponding limiting slot 4, thereby ensuring its installation accuracy. It is then secured with the first bolt 8 to improve the concentricity of the stator 2 after installation, ensuring the final measurement accuracy of the resolver. The stator 2 is further secured with evenly distributed first bolts 8 to ensure uniform distribution of the clamping force, thereby reducing damage to the stator 2 and extending its service life.

[0027] The bushing 1 has a sliding groove 10 on the inner wall of the bottom of the annular groove 9 along the radial direction of the bushing 1. The limiting rod 5 is slidably connected to the sliding groove 10. The end of the limiting rod 5 extending out of the sliding groove 10 is provided with a plug-in part 11. The stator 2 has a slot 12 on the inner wall of the end of the limiting groove 4 for the plug-in part 11 to be inserted. It also includes a driving component for controlling the sliding of the limiting rod 5.

[0028] After the stator 2 and bushing 1 are installed in place, the limiting rod 5 is slid by the driving component, so that the insertion part 11 is inserted into the corresponding slot 12, so as to further position the stator 2 and ensure the stability of the installation and fixation between it and the bushing 1.

[0029] A tension spring 13 is fixedly connected between the inner wall of the sliding groove 10 and the end of the limiting rod 5. The driving member is used to drive the limiting rod 5 to slide toward the slot 12. Before the stator 2 is installed, under the tension of the tension spring 13, a part of the end of the limiting rod 5 extends out of the sliding groove 10. Under the action of the driving member, it slides further toward the stator 2, and the insertion part 11 is inserted into the slot 12.

[0030] The bushing 1 has several through slots 14 that are corresponding to and perpendicular to the sliding groove 10 on the end face facing the end cap 3. The through slots 14 are connected to the sliding groove 10. The driving component includes several driving rods 15 that are fixedly connected to the surface of the end cap 3 and inserted into the through slots 14. The bottom of the side surface of the driving rod 15 facing the slot 12 is provided with a first inclined surface 16. The surface of the limiting rod 5 is provided with a triangular groove 17. The triangular groove 17 includes a second inclined surface 18 that is parallel to and abuts against the first inclined surface 16.

[0031] After the stator 2 is installed, the end cover 3 is placed on the end face of the bushing 1, and the drive rod 15 is inserted into the through groove 14. Under the action of the first inclined surface 16 and the second inclined surface 18, the limiting rod 5 is driven to move towards the stator 2, and the insertion part 11 is inserted into the slot 12. While installing the end cover 3, the stator 2 is further positioned.

[0032] A connecting groove 19 is provided vertically and connected to the through groove 14 on one side of the bushing 1. A positioning rod 20 is slidably connected in the connecting groove 19. One end of the positioning rod 20 extends into the through groove 14 and a third inclined surface 21 is provided on the side facing the end cover 3. A spring 22 is fixedly connected between the other end of the positioning rod 20 and the inner wall of the end of the connecting groove 19. A positioning groove 23 is provided on the side of the drive rod 15 facing the positioning rod 20 for insertion.

[0033] When installing the end cap 3, the drive rod 15 pushes the third inclined surface 21 of the positioning rod 20, causing it to slide towards the inside of the connecting groove 19. The spring 22 is compressed. When the drive rod 15 is fully inserted into the connecting groove 19, the positioning rod 20 and the positioning groove 23 are at the same horizontal position. Under the elastic force of the spring 22, the positioning rod 20 is inserted into the positioning groove 23 to facilitate the initial positioning of the end cap 3. The outer surface of the end cap 3 is fixedly connected to the bushing 1 by the second bolt 24.

[0034] The specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.

Claims

1. A mounting structure for a resolver stator, characterized in that: The device includes a bushing (1), a stator (2), and an end cap (3). The bushing (1) has an annular groove (9) on its inner circumference for placing the stator (2). The stator (2) has several evenly distributed limiting grooves (4) on its circumference sidewall. The bushing (1) has several limiting rods (5) inserted into the limiting grooves (4) at the bottom of the annular groove. The stator (2) is fixedly connected to the bottom of the annular groove (9) by a fastener.

2. The mounting structure for a resolver stator according to claim 1, characterized in that: The bushing (1) has a sliding groove (10) on the inner wall of the bottom of the annular groove (9) along the radial direction of the bushing (1). The limiting rod (5) is slidably connected to the sliding groove (10). The end of the limiting rod (5) extending out of the sliding groove (10) is provided with a plug-in part (11). The stator (2) has a slot (12) on the inner wall of the end of the limiting groove (4) for the plug-in part (11) to be inserted. It also includes a driving member for controlling the sliding of the limiting rod (5).

3. The mounting structure for a resolver stator according to claim 2, characterized in that: A tension spring (13) is fixedly connected between the inner wall of the sliding groove (10) and the end of the limiting rod (5), and the driving member is used to drive the limiting rod (5) to slide toward the slot (12).

4. The mounting structure for a resolver stator according to claim 3, characterized in that: The bushing (1) has several through slots (14) on its end face facing the end cap (3) that correspond to and are perpendicular to the sliding groove (10). The through slots (14) are connected to the sliding groove (10). The driving component includes several driving rods (15) that are fixedly connected to the surface of the end cap (3) and inserted into the through slots (14). The bottom of the side surface of the driving rod (15) facing the slot (12) is provided with a first inclined surface (16). The surface of the limiting rod (5) is provided with a triangular groove (17). The triangular groove (17) includes a second inclined surface (18) that is parallel to and abuts against the first inclined surface (16).

5. The mounting structure for a resolver stator according to claim 4, characterized in that: The stator (2) has a through hole (6) between two adjacent limiting grooves (4), and the bottom of the annular groove (9) has a plurality of screw holes (7) that fit into the through hole (6). The fastener includes a first bolt (8) disposed in the through hole (6) and the screw hole (7).

6. The mounting structure for a resolver stator according to claim 5, characterized in that: The bushing (1) has a vertical connecting groove (19) on one side of the through groove (14) and is connected to the through groove (14). A positioning rod (20) is slidably connected in the connecting groove (19). One end of the positioning rod (20) extends into the through groove (14) and a third inclined surface (21) is provided on the side facing the end cover (3). A spring (22) is fixedly connected between the other end of the positioning rod (20) and the inner wall of the end of the connecting groove (19). A positioning groove (23) for insertion is provided on the side of the drive rod (15) facing the positioning rod (20).

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