Transformer winding elastic positioning and locking structure

Abstract

The utility model discloses a transformer winding elastic positioning lock structure, including with the coaxial installation structure body of winding pivot, the end portion of structure body is shaped with the positioning structure, and positioning structure can insert the assembly hole of winding skeleton axial, and can form the axial limiting force of winding skeleton to the in -place insertion, the structure body is used for the one end of winding skeleton through the gap formation of setting up and forms two support bodies that are parallel to each other, and the limiting structure combination of two support body end portion formation constitutes the positioning structure, still include adjusting structure for adjusting the size of gap width, so that one limiting structure can be relatively close or away from another limiting structure, when two limiting structures are parallel to each other, and positioning structure can form the radial expansion force of opposite direction to the inner wall of assembly hole. The utility model can realize the easy dismounting of winding skeleton, and ensure that the coaxial degree of winding skeleton and winding drive shaft after installing in place.

Description

Technical Field

[0001] This utility model relates to the field of transformer winding technology, and in particular to a transformer winding elastic positioning lock structure. Background Technology

[0002] Transformer winding is typically done by a winding machine. Common winding fixtures include those that use a suitable bobbin mold inserted into the bobbin's inner hole, and then lock it in place with positioning pins or clamps, providing good internal support, but the installation and disassembly process is cumbersome; and those that use self-adaptive elastic support components inserted into the bobbin's inner hole, allowing for one-step installation and easy disassembly, but the strength of the internal support is affected by the machining accuracy. If the internal support strength is insufficient, it can easily lead to bobbin deformation, and each self-adaptive elastic support component cannot guarantee completely consistent elastic deformation, which may cause the winding bobbin to be eccentric, affecting the winding effect. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology, this utility model provides a transformer winding elastic positioning lock structure, which can realize easy disassembly and assembly of the winding skeleton, and ensure the coaxiality of the winding skeleton and the winding drive shaft after installation.

[0004] Technical Solution: To achieve the above objectives, this utility model provides a transformer winding elastic positioning locking structure, comprising a structural body coaxially mounted with the winding shaft. The end of the structural body is formed with a positioning structure, which can be inserted into an axial assembly hole of the winding bobbin and, after insertion, can exert an axial limiting force on the winding bobbin. One end of the structural body used to mount the winding bobbin forms two parallel supports through a gap. The limiting structures formed at the ends of the two supports combine to constitute the positioning structure. It also includes an adjustment structure for adjusting the gap width, allowing one limiting structure to move closer to or further away from the other. When the two limiting structures are parallel, the positioning structure can exert a radially expanding force in opposite directions on the inner wall of the assembly hole.

[0005] Furthermore, the adjustment structure includes an elastic element connecting the two supports, which can generate a mutual elastic tension between the two supports, causing the first support to tend to be pulled closer to the second support.

[0006] Furthermore, the adjustment structure also includes a radially moving member that can extend from the side of the second support body closer to the first support body, and the extended portion can exert a pushing force on the first support body.

[0007] Furthermore, the radial moving component is an adjusting bolt, and the second support body is provided with a corresponding threaded through hole for assembling the adjusting bolt.

[0008] Furthermore, the elastic element is a helical spring, which is sleeved on the outside of the radially moving element.

[0009] Furthermore, each of the two limiting structures has a slot on its opposing surface. When the two limiting structures are parallel to each other, the bottom surface of the slots is in contact with the two opposite wall surfaces of the assembly hole, and the two slot surfaces in the axial direction are in contact with the two end faces in the axial direction of the winding skeleton.

[0010] Furthermore, taking the arrangement direction of the two supports as the width direction, when the end of the radial moving member does not exert a pushing force on the first support, the width of the end of the positioning structure is greater than the width of the assembly hole; when the two limiting structures are in close contact, the width of the end of the positioning structure is less than the width of the assembly hole; the end of the positioning structure is provided with inclined guide surfaces on both sides in the width direction.

[0011] Furthermore, the groove edge near the end of the positioning structure is formed with a guide rounded corner.

[0012] Beneficial effects: The transformer winding elastic positioning locking structure of this utility model has a one-piece molded structure with higher strength. When locking, one side of the support body is used as the positioning reference, and the other side of the support body can adaptively expand and contract during installation and removal. After installation, it can also be manually adjusted to fully lock the winding skeleton. This not only makes it easy to insert the wire skeleton, but also fully limits and locks the winding skeleton after installation, and provides a stable internal support force, increases the skeleton strength, avoids deformation due to winding pressure, and ensures the coaxiality of the skeleton and the winding machine shaft after locking, thus ensuring the winding effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of one embodiment of the skeleton positioning tooling of this utility model. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] As attached Figure 1 The aforementioned transformer winding elastic positioning lock structure includes a structural body coaxially mounted with the winding shaft. The end of the structural body is formed with a positioning structure 1, which can be inserted into the axial assembly hole of the winding skeleton 5 and can form an axial limiting force on the winding skeleton 5 after being inserted into place.

[0016] The structure body is used to mount the winding skeleton 5. One end of the structure body is formed by opening a gap 2 to form two parallel supports. The limiting structures 11 formed at the ends of the two supports are combined to form the positioning structure 1. The two supports are integrally formed with the other parts of the structure body. The gap 2 is opened directly along the axial direction of the structure body, so that the two supports formed are symmetrical about the axial direction of the body.

[0017] It also includes an adjustment structure for adjusting the width of the gap 2, allowing one of the limiting structures 11 to move closer to or further away from the other. During the installation of the winding skeleton, by reducing the gap width, one limiting structure 11 can be brought closer to the other, allowing the skeleton to be easily fitted onto the positioning structure 1 without excessive axial resistance hindering the fitting process. After fitting to the axial position, the gap width is increased using the adjustment structure until the two limiting structures are parallel, thus creating a radial limiting force on the winding skeleton. Under the combined action of the axial and radial limiting forces, the winding skeleton is fixed relative to the main structure.

[0018] Since the gap width adjustment is achieved by moving one of the limiting structures 11 closer to or further away from the other, when the two limiting structures 11 are parallel to each other, the positioning structure 1 can generate radial expansion forces with opposite directions on the inner wall of the assembly hole. This allows the relatively fixed limiting structures 11 to serve as a positioning reference, ensuring that after final locking, the winding skeleton is coaxial with the drive shaft of the winding machine and relatively balanced under radial forces, thereby avoiding wobbling caused by eccentricity during winding and ensuring the winding effect.

[0019] The adjustment structure includes an elastic element 4 connecting the two supports, which can generate a mutual elastic pulling force between the two supports, causing the first support 31 to tend to be pulled closer to the second support 32. That is, when no locking force is applied, the limiting structure 11 at the end of the first support 31 is slightly biased towards the limiting structure 11 at the end of the second support 32, so that only under the action of the elastic element, the two limiting structures do not form a radial limiting force on the assembled winding skeleton. Therefore, the winding skeleton relative positioning structure 1 can be assembled and disassembled in this state.

[0020] The adjustment structure also includes a radially moving member 6, which can extend from the side of the second support 32 closest to the first support 31, and the extended portion can exert a pushing force on the first support 31. This overcomes the elastic tension of the elastic member, allowing the two supports to return to a parallel state. Thus, after the relative positioning structure 1 of the winding skeleton is installed, the two supports can be driven parallel by pushing, thereby enabling the two limiting structures at the ends to exert a radial limiting force on the winding skeleton, achieving the purpose of locking.

[0021] The radial moving part 6 is an adjusting bolt, and the second support body 32 is provided with a corresponding threaded through hole for assembling the adjusting bolt. The adjusting bolt engages with the threaded through hole, and the size of the gap 2 can be adjusted by rotating the adjusting bolt after the winding bobbin is installed. The adjusting bolt is preferably a countersunk hexagonal screw to avoid excessive noise during the winding process.

[0022] The elastic element 4 is a helical spring, which is sleeved on the outside of the radially moving element 6. This ensures that the tensile force exerted by the elastic element 4 on the first support and the pushing force exerted by the radially moving element 6 on the first support act at the same point.

[0023] If an adjusting bolt and a helical spring are used simultaneously, with one end of the helical spring contacting the first support 31 and the other end extending into the threaded through hole and contacting the end of the adjusting bolt, and a small round protrusion at the center of the end face of the adjusting bolt, the small round protrusion is engaged in the middle of the spring to prevent the spring from shifting. This ensures that the pushing force applied by the adjusting bolt to the first support is an elastic force.

[0024] In one embodiment, the two ends of the helical spring are fixedly connected to the adjusting bolt and the first support 31, respectively, so that by adjusting the position of the adjusting bolt in the threaded through hole, the state of the helical spring can be switched between tension and compression, thereby generating the pulling force required when installing or removing the winding skeleton, and the pushing force required when locking the winding skeleton.

[0025] In another embodiment, when locked in place, the small round protrusion at the end of the adjusting bolt can also contact the first support 31, thereby forming a rigid support between the two supports.

[0026] Example: Each of the two limiting structures 11 has a slot 12 on its opposing surfaces. When the two limiting structures 11 are parallel, the bottom surfaces of the two slots 12 are respectively fitted with the two opposite wall surfaces of the assembly holes, and the two axial slot surfaces of the slots 12 are respectively fitted with the two axial end faces of the winding skeleton 5. By symmetrically arranging the slots 12, after the winding skeleton is fitted into position along the axial direction relative to the positioning structure, the winding skeleton can be precisely fitted into the two slots. The two axial end faces of the slots can form an axial limiting force on the winding skeleton. After axial fitting, the gap is increased by adjusting the bolts to make the two side supports parallel, allowing the bottom surfaces of the two slots to simultaneously fit with the wall surfaces of the assembly holes of the winding skeleton. This creates a support force perpendicular to the fitting surface at the fitting point. The support forces of the two fitting surfaces are exactly opposite, thus forming a radial limiting force and preventing the winding skeleton from being eccentric relative to the axis of rotation.

[0027] With the arrangement direction of the two supports as the width direction, when the end of the radial moving member 6 does not exert a pushing force on the first support 31, the width of the end of the positioning structure 1 is greater than the width of the assembly hole; when the two limiting structures 11 are in close contact, the width of the end of the positioning structure 1 is less than the width of the assembly hole; the end of the positioning structure 1 is provided with inclined guide surfaces 13 on both sides in the width direction. When the winding skeleton is assembled, the skeleton assembly hole port contacts the inclined guide surfaces on both sides. As the assembly proceeds, the limiting structures 11 on both sides are forced closer until the end of the positioning structure can be inserted and pass through the assembly hole. Since the limiting structures on both sides are not parallel in the initial state, the elastic element between the two supports is in a slightly stretched state. As the two limiting structures approach each other, the elastic element recovers from slight stretching to its original length and then becomes compressed.

[0028] Because the main structure is integrally formed from alloy material, the bending and tilting of the first support towards the second support is an elastic deformation. After the end of the positioning structure has completely passed through the assembly hole, the relative position of the two supports can instantly return to its initial state under the combined action of the elastic restoring force of the elastic element and the tilted support. During the release process, the elastic element first extends and returns to its original position before stretching, thus providing a certain buffering effect before returning to the initial state. This prevents the impact force generated during release from acting on the inner hole of the winding skeleton, protecting the skeleton. A clear clicking sound can be heard at the moment of positioning, indicating that the winding skeleton is axially engaged. Then, the radial constraint is adjusted by the side top to achieve complete locking.

[0029] The groove 12 has a guide radius 14 formed on the edge of the groove near the end of the positioning structure 1. After winding is completed, the pushing force on the first support is removed by rotating the adjusting bolt in the opposite direction, so that the relative position of the two supports is restored to the initial state under the pulling action of the elastic element. The guide radius 14 on both sides is advantageous in forcing the two limiting structures closer together when removing the coil and the frame, and since the winding frame is not constrained by radial support force and axial friction force at this time, it can be removed from the positioning structure more easily.

[0030] The structural body of this solution can be formed from a complete blank through precision machining to create a positioning structure that can completely limit the winding skeleton and ensure that the positioning structure remains centered after installation relative to the winding machine shaft. Then, gaps are machined to allow the positioning structure to adaptively adjust the end size, thereby facilitating the assembly of the winding skeleton.

[0031] The above are merely preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A transformer winding elastic positioning locking structure, characterized in that: The structure includes a structural body coaxially mounted with the winding shaft. The end of the structural body is formed with a positioning structure (1). The positioning structure (1) can be inserted into the axial assembly hole of the winding skeleton (5), and after being inserted into place, it can form an axial limiting force on the winding skeleton (5). The structure body is used to mount the winding skeleton (5) at one end to form two parallel supports by opening a gap (2), and the limiting structure (11) formed at the ends of the two supports is combined to form the positioning structure (1). It also includes an adjustment structure for adjusting the size of the gap (2) so that one of the limiting structures (11) can be relatively close to or away from the other limiting structure (11); when the two limiting structures (11) are parallel to each other, the positioning structure (1) can form a radial expansion force with relatively opposite directions on the inner wall of the assembly hole.

2. The transformer winding elastic positioning locking structure according to claim 1, characterized in that: The adjustment structure includes an elastic element (4) connecting the two supports, which can generate a mutual elastic tension between the two supports, causing the first support (31) to tend to be pulled closer to the second support (32).

3. The transformer winding elastic positioning locking structure according to claim 2, characterized in that: The adjustment structure also includes a radially moving member (6) that can extend from the side of the second support (32) near the first support (31), and the extended portion can exert a pushing force on the first support (31).

4. The transformer winding elastic positioning locking structure according to claim 3, characterized in that: The radial moving part (6) adopts an adjusting bolt, and the second support body (32) is provided with a corresponding threaded through hole for assembling the adjusting bolt.

5. The transformer winding elastic positioning locking structure according to claim 3, characterized in that: The elastic element (4) is a helical spring, which is sleeved on the outside of the radial moving element (6).

6. The transformer winding elastic positioning locking structure according to claim 3, characterized in that: Both of the limiting structures (11) have slots (12) on their opposing surfaces. When the two limiting structures (11) are parallel to each other, the bottom surfaces of the slots (12) are respectively attached to the two hole walls opposite to the assembly holes, and the two slot surfaces of the slots (12) in the axial direction are respectively attached to the two end faces of the winding skeleton (5) in the axial direction.

7. The transformer winding elastic positioning locking structure according to claim 6, characterized in that: With the arrangement direction of the two supports as the width direction, when the end of the radial moving member (6) does not exert a pushing force on the first support (31), the width of the end of the positioning structure (1) is greater than the width of the assembly hole; when the two limiting structures (11) are in close contact, the width of the end of the positioning structure (1) is less than the width of the assembly hole; the end of the positioning structure (1) is provided with inclined guide surfaces (13) on both sides of the width direction.

8. The transformer winding elastic positioning locking structure according to claim 7, characterized in that: The groove (12) has a guide rounded corner (14) formed on the edge of the groove near the end of the positioning structure (1).

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