Connector structure for rotary transformer stator framework

Abstract

The utility model provides a connector structure for a stator framework of a rotary transformer, which comprises an integrally formed connector body which is connected to the outer wall of the stator framework and horizontally extends outwards, a PIN needle which is provided with a needle head part and a flat plate part which is vertically connected with the needle head part, and a protective sleeve which is detachably sleeved on the connector body, the needle head part is inserted in the upper surface of the connector body and protrudes upwards out of the connector body, the flat plate part is embedded in the connector body, a matching groove corresponding to the flat plate part in position is formed in the outer end of the connector body, the flat plate part is transversely arranged in the matching groove, the matching groove is provided with an upper groove opening, a lower groove opening and an outer groove opening, and the upper groove opening, the lower groove opening and the outer groove opening are matched. The protective sleeve is a hollow cuboid, when the protective sleeve sleeves the connector body, the protective sleeve shields the upper notch and the lower notch, and the outer end face of the protective sleeve is flush with the outer end face of the connector body, so that abnormal short circuit caused by foreign matter entering can be avoided, and the strength and the protective effect can be improved through the structural design of the hollow cuboid.

Description

Technical Field

[0001] The utility model relates to the technical field of a rotary transformer stator frame, in particular to a connector structure used for a rotary transformer stator frame. Background Art

[0002] A resolver / transformer is an electromagnetic sensor, also known as a synchronous resolver. It is a small AC motor used to measure the angular displacement and angular velocity of a rotating object's shaft. It consists of a stator and a rotor, wherein the stator includes an annular stator frame, a stator core wrapped in the stator frame, and a stator winding wound on the stator frame.

[0003] In order to more conveniently connect the ends of the stator windings and realize the transmission of signals and electrical energy, the existing stator frame usually has a connector structure that is easy to connect. For example, Chinese patents CN204103616U, CN208127998U, and CN113782315B disclose such stator frames with connector structures. However, such connector structures either do not have a cover plate or only have a cover plate on the top, resulting in the connection plate of the PIN pin being exposed, which is prone to short circuit abnormalities due to the entry of foreign objects. There are also some connector structures with cover plates on both the top and the bottom, but most of these cover plates are split-up designs. The size of a single cover plate is small and the alignment is difficult, which is not convenient when performing operations such as taking and fastening. At the same time, such cover plates are basically flat-plate structures with low strength. When subjected to collision, the protective effect on the connector body is poor. Utility Model Content

[0004] The purpose of the utility model is to overcome one or more shortcomings in the prior art and to provide a connector structure for a stator frame of a rotary transformer.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is a connector structure for a stator frame of a rotary transformer, comprising:

[0006] A connector body, the connector body is connected to the outer wall of the stator frame and extends outward horizontally, and the connector body and the stator frame are integrally formed;

[0007] A PIN needle, the PIN needle comprising a needle head and a flat plate portion vertically connected to the needle head, the needle head being inserted into the upper surface of the connector body and protruding upward from the connector body, and the flat plate portion being buried in the connector body;

[0008] The outer end of the connector body is provided with a matching groove corresponding to the flat plate portion, the flat plate portion lies transversely in the matching groove, the matching groove portion located above the flat plate portion penetrates the upper surface and the outer end surface of the connector body to form an upper notch and an outer notch, and the matching groove portion located below the flat plate portion only penetrates the lower surface of the connector body to form a lower notch;

[0009] The connector structure also includes a protective sleeve that is pluggable and sleeved on the connector body. The protective sleeve is in the shape of a hollow rectangular parallelepiped. When the protective sleeve is sleeved on the connector body, the protective sleeve covers the upper notch and the lower notch, and the outer end surface of the protective sleeve is flush with the outer end surface of the connector body.

[0010] Preferably, the outer portion of the upper surface of the protective sleeve is sunken, dividing the inner cavity of the protective sleeve into an inner area for accommodating the needle head and an outer area corresponding to the upper notch and the lower notch, the layer height of the outer area is lower than the layer height of the inner area, and the top surface and bottom surface of the outer area are respectively in contact with the upper surface and lower surface of the connector body.

[0011] Further preferably, the portion of the top surface of the outer area corresponding to the outer notch protrudes downward to form a lower pressure strip extending in the inner and outer directions. When the protective sleeve is sleeved on the connector body, the lower pressure strip extends into the outer notch and presses the connecting wire located in the outer notch together with the bottom wall of the outer notch.

[0012] Further preferably, the inner end of the lower pressing strip also extends inwardly into the upper notch.

[0013] Preferably, the two side walls of the inner cavity of the protective sleeve are connected to the two side walls of the connector body through a plug-in structure, and the plug-in structure includes slots opened on the two side walls of the connector body and ridges arranged on the two side walls of the inner cavity of the protective sleeve, the slots extend inward and outward directions and pass through the outer end surface of the connector body, and the ridges match the slots.

[0014] Further preferably, when the protective sleeve is sleeved on the connector body, the convex ridge is inserted into the slot, and the two side walls of the inner cavity of the protective sleeve are in contact with the two side walls of the connector body.

[0015] Further preferably, the plug-in structure also includes an anti-slip unit, which includes an anti-slip protrusion arranged in the slot and anti-slip bosses connected to the two side walls of the inner cavity of the protective sleeve, the anti-slip protrusion divides the slot into a guide groove matching the ridge and an anti-slip groove located on the inner side of the guide groove, and when the protective sleeve is sleeved on the connector body, the anti-slip boss is inserted into the anti-slip groove and tightly abuts against the anti-slip protrusion to prevent the protective sleeve from detaching outward from the connector body.

[0016] Further preferably, both side walls of the protective sleeve are provided with U-shaped grooves penetrating the protective sleeve in the thickness direction, the notches of the U-shaped grooves face inwards, the U-shaped grooves separate a part of the protective sleeve into a cantilever plate with elasticity, and the anti-slip bosses are connected to the inner walls of the cantilever plates.

[0017] Further preferably, the outer end surface of the anti-slip protrusion is a first inclined surface that gradually opens inward, and the inner end surface of the anti-slip boss is a second inclined surface that matches the first inclined surface. When the protective sleeve is put on the connector body, the second inclined surface slides along the first inclined surface, and the cantilever plate is pushed open to both sides by utilizing the elasticity of the cantilever plate, so that the anti-slip boss can smoothly enter the anti-slip groove.

[0018] Preferably, there are a plurality of PIN needles, and the plurality of PIN needles are distributed at intervals along the width direction of the connector body.

[0019] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0020] 1. By pulling out the protective cover, the flat plate of the PIN needle can be exposed from the upper notch, the lower notch and the outer notch, so that ultrasonic welding can be conveniently performed without affecting the welding effect.

[0021] 2. After welding, the protective cover can be inserted to cover the upper and lower notches to prevent the welding parts from being exposed and to avoid short circuits caused by foreign matter entering.

[0022] 3. Since the protective cover is in the shape of a hollow cuboid, its overall strength is higher than that of a flat plate structure, and the protective effect on the connector body is better when it is hit. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 , Figure 2 It is a three-dimensional schematic diagram of a preferred embodiment of the utility model. Figure 1 The middle protective sleeve is arranged on the connector body. Figure 2 The middle protective sleeve is not sleeved on the connector body.

[0024] Figure 3 , Figure 4 yes Figure 1 Schematic diagram of the protective cover.

[0025] Figure 5 yes Figure 1 Schematic diagram of the main view.

[0026] Figure 6 yes Figure 5 Schematic cross-sectional view along the AA direction.

[0027] Figure 7 yes Figure 5 Schematic cross-sectional view along the BB direction.

[0028] Among them: 1. stator frame; 10. connector body; 11. matching groove; 12. upper notch; 13. outer notch; 14. lower notch; 15. limiting step; 20. PIN needle; 21. needle head; 22. flat plate; 30. protective cover; 31. step; 32. inner area; 33. outer area; 34. lower pressure strip; 35. U-shaped groove; 36. cantilever plate; 411. guide groove; 412. anti-slip groove; 42. convex ridge; 431. anti-slip protrusion; 432. anti-slip boss; 433. first inclined surface; 434. second inclined surface. DETAILED DESCRIPTION

[0029] The inner direction described in the present invention refers to the direction close to the axis of the frame body, and the outer direction refers to the direction away from the axis of the frame body.

[0030] like Figures 1 to 7 As shown, the connector structure for the stator frame of the rotary transformer provided by the utility model includes a connector body 10, a PIN needle 20, and a protective sleeve 30, wherein the connector body 10 is connected to the outer wall of the stator frame 1 and extends horizontally outward, and the connector body 10 and the stator frame 1 are integrally formed; the PIN needle 20 includes a needle head 21 and a flat plate portion 22 vertically connected to the needle head 21, the needle head 21 is inserted into the upper surface of the connector body 10 and protrudes upward from the connector body 10, and the flat plate portion 22 is buried in the connector body 10; the outer end of the connector body 10 is provided with a matching The flat plate portion 22 lies across the matching groove 11, the portion of the matching groove 11 located above the flat plate portion 22 penetrates the upper surface and the outer end surface of the connector body 10 to form an upper notch 12 and an outer notch 13, and the portion of the matching groove 11 located below the flat plate portion 22 only penetrates the lower surface of the connector body 10 to form a lower notch 14; the protective sleeve 30 is pluggably mounted on the connector body 10, and the protective sleeve 30 is in the shape of a hollow rectangular parallelepiped. When the protective sleeve 30 is mounted on the connector body 10, the protective sleeve 30 blocks the upper notch 12 and the lower notch 13, and the outer end surface of the protective sleeve 30 is flush with the outer end surface of the connector body 10.

[0031] The advantages of this setting are:

[0032] 1. By pulling out the protective cover, the flat plate of the PIN needle can be exposed from the upper notch, the lower notch and the outer notch, so that ultrasonic welding can be conveniently performed without affecting the welding effect.

[0033] 2. After welding, the protective cover can be inserted to cover the upper and lower notches to prevent the welding parts from being exposed and to avoid short circuits caused by foreign matter entering.

[0034] 3. Since the protective cover is in the shape of a hollow cuboid, its overall strength is higher than that of a flat plate structure, and the protective effect on the connector body is better when it is hit.

[0035] In this embodiment, the outer portion of the upper surface of the protective sleeve 30 is sunken to form a step 31, and the inner cavity of the protective sleeve 30 is divided into an inner area 32 for accommodating the needle head 21 and an outer area 33 corresponding to the upper notch 12 and the lower notch 14. The layer height of the outer area 33 is lower than the layer height of the inner area 32, and the top surface and the bottom surface of the outer area 33 are respectively in contact with the upper surface and the lower surface of the connector body 10.

[0036] In this embodiment, the portion of the top surface of the outer area 33 corresponding to the outer notch 13 protrudes downward to form a lower pressure strip 34 extending in the inner and outer directions. When the protective sleeve 30 is sleeved on the connector body 10, the lower pressure strip 34 extends into the outer notch 13 and, together with the bottom wall of the outer notch 13, presses the connecting wire (not shown in the figure) located in the outer notch 13. In order to enhance the pressing effect, the inner end of the lower pressure strip 34 further extends inward into the upper notch 12.

[0037] To facilitate the insertion and removal of the protective sleeve 30 and to guide it, in the present embodiment, the two side walls of the inner cavity of the protective sleeve 30 are connected to the two side walls of the connector body 10 through a plug-in structure. The plug-in structure includes slots provided on the two side walls of the connector body 10 and ridges 42 provided on the two side walls of the inner cavity of the protective sleeve 30. The slots extend in the inward and outward directions and pass through the outer end surface of the connector body 10. The ridges 42 match the slots. Specifically, when the protective sleeve 30 is sleeved on the connector body 10, the ridges 42 are inserted into the slots. At the same time, the two side walls of the inner cavity of the protective sleeve 30 fit the two side walls of the connector body 10.

[0038] To prevent the protective sleeve 30 from being accidentally pulled out, in the present embodiment, the plug-in structure further includes an anti-slip unit, which includes an anti-slip protrusion 431 provided in the slot, and an anti-slip boss 432 connected to the two side walls of the inner cavity of the protective sleeve 30. The anti-slip protrusion 431 divides the slot into a guide groove 411 matching the ridge 42 and an anti-slip groove 412 located on the inner side of the guide groove 411. When the protective sleeve 30 is sleeved on the connector body 10, the anti-slip boss 432 is inserted into the anti-slip groove 412 and pressed against the anti-slip protrusion 431 to prevent the protective sleeve 30 from being outwardly separated from the connector body 10.

[0039] In order to limit the insertion depth of the protective sleeve 30 when plugging and unplugging, in this embodiment, a limiting step 15 matching the inner end face of the protective sleeve 30 is further provided at the root of the connector body 10. When the protective sleeve 30 is inserted into place, the inner end face of the protective sleeve 30 is tightly pressed against the step surface of the limiting step 15.

[0040] To facilitate the insertion and removal of the protective sleeve 30, in the present embodiment, the two side walls of the protective sleeve 30 are provided with a U-shaped groove 35 which penetrates the protective sleeve 30 along the thickness direction, the notch of the U-shaped groove 35 faces inward, and the U-shaped groove 35 separates a part of the protective sleeve 30 into an elastic cantilever plate 36, and the anti-slip boss 432 is connected to the inner wall of the cantilever plate 36. Furthermore, the outer end face of the anti-slip protrusion 431 is a first inclined surface 433 which gradually opens inward, and the inner end face of the anti-slip boss 432 is a second inclined surface 434 which matches the first inclined surface 433. When the protective sleeve 30 is sleeved on the connector body 10, the second inclined surface 434 slides along the first inclined surface 433, and the elasticity of the cantilever plate 36 is used to push the cantilever plate 36 to both sides, so that the anti-slip boss 432 can smoothly enter the anti-slip groove 412.

[0041] In this embodiment, there are a plurality of PIN pins 20 , and the plurality of PIN pins 20 are distributed at intervals along the width direction of the connector body 10 .

[0042] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A connector structure for a rotating transformer stator frame, comprising: A connector body, the connector body is connected to the outer wall of the stator frame and extends outward horizontally, and the connector body and the stator frame are integrally formed; A PIN needle, the PIN needle comprising a needle head and a flat plate portion vertically connected to the needle head, the needle head being inserted into the upper surface of the connector body and protruding upward from the connector body, and the flat plate portion being buried in the connector body; Features: The outer end of the connector body is provided with a matching groove corresponding to the flat plate portion, the flat plate portion lies transversely in the matching groove, the matching groove portion located above the flat plate portion penetrates the upper surface and the outer end surface of the connector body to form an upper notch and an outer notch, and the matching groove portion located below the flat plate portion only penetrates the lower surface of the connector body to form a lower notch; The connector structure also includes a protective sleeve that is pluggable and sleeved on the connector body. The protective sleeve is in the shape of a hollow rectangular parallelepiped. When the protective sleeve is sleeved on the connector body, the protective sleeve covers the upper notch and the lower notch, and the outer end surface of the protective sleeve is flush with the outer end surface of the connector body.

2. The connector structure according to claim 1, characterized in that: The outer portion of the upper surface of the protective sleeve is sunken, dividing the inner cavity of the protective sleeve into an inner area for accommodating the needle head and an outer area corresponding to the upper notch and the lower notch, the layer height of the outer area is lower than the layer height of the inner area, and the top surface and bottom surface of the outer area are respectively in contact with the upper surface and lower surface of the connector body.

3. The connector structure according to claim 2, characterized in that: The portion of the top surface of the outer area corresponding to the outer notch protrudes downward to form a lower pressure strip extending in the inner and outer directions. When the protective sleeve is sleeved on the connector body, the lower pressure strip extends into the outer notch and presses the connecting wire in the outer notch together with the bottom wall of the outer notch.

4. The connector structure according to claim 3, characterized in that: The inner end of the lower pressing strip also extends inwardly into the upper notch.

5. The connector structure according to claim 1, characterized in that: The two side walls of the inner cavity of the protective sleeve are connected to the two side walls of the connector body through a plug-in structure, and the plug-in structure includes slots opened on the two side walls of the connector body and ridges arranged on the two side walls of the inner cavity of the protective sleeve, the slots extend in the inward and outward directions and pass through the outer end surface of the connector body, and the ridges match the slots.

6. The connector structure according to claim 5, characterized in that: When the protective sleeve is sleeved on the connector body, the convex ridge is inserted into the slot, and the two side walls of the inner cavity of the protective sleeve are in contact with the two side walls of the connector body.

7. The connector structure according to claim 5, characterized in that: The plug-in structure also includes an anti-slip unit, which includes an anti-slip protrusion arranged in the slot and an anti-slip boss connected to the two side walls of the inner cavity of the protective sleeve. The anti-slip protrusion divides the slot into a guide groove matching the ridge and an anti-slip groove located inside the guide groove. When the protective sleeve is sleeved on the connector body, the anti-slip boss is inserted into the anti-slip groove and pressed against the anti-slip protrusion to prevent the protective sleeve from detaching from the connector body.

8. The connector structure according to claim 7, characterized in that: The two side walls of the protective sleeve are provided with U-shaped grooves penetrating the protective sleeve along the thickness direction, the notches of the U-shaped grooves face inwards, the U-shaped grooves separate a part of the protective sleeve into an elastic cantilever plate, and the anti-slip bosses are connected to the inner walls of the cantilever plates.

9. The connector structure according to claim 8, characterized in that: The outer end surface of the anti-slip protrusion is a first inclined surface that gradually opens inward, and the inner end surface of the anti-slip boss is a second inclined surface that matches the first inclined surface. When the protective sleeve is put on the connector body, the second inclined surface slides along the first inclined surface, and the cantilever plate is pushed open to both sides by utilizing the elasticity of the cantilever plate, so that the anti-slip boss can smoothly enter the anti-slip groove.

10. The connector structure according to claim 1, characterized in that: There are a plurality of PIN pins, and the plurality of PIN pins are distributed at intervals along the width direction of the connector body.

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