CN214123707U

CN214123707U - Locking structure for fixing coil framework on winding shaft

Info

Publication number: CN214123707U
Application number: CN202023110878.0U
Authority: CN
Inventors: 蔡椿军; 王海航; 王凤岭
Original assignee: Sparktronic Co ltd
Current assignee: Sparktronic Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-09-03
Anticipated expiration: 2030-12-22

Abstract

The utility model relates to a coil skeleton fixes locking structure on spool, including the spool body, the upset arm, the spacer pin, thrust spring, there is the rectangle hole of a symmetry at the preceding tip of the spool body face of cylinder, there is the symmetry blind hole at both sides wall center, in the spacer pin fastening hole, there is the through-hole at the wall behind the symmetry hole, thrust spring arranges the hole in, on the fixed plate of two upset arms respectively inserted the internal diameter at thrust spring both ends, and place the spool body in on the spacer pin, make the upset arm after-arm salient outside the spool body face, the upset arm can rotate around the spacer pin. The framework compresses the rear arm, the rear arm is rotated into the winding shaft, when the framework exceeds the rear arm, the front arm is popped out and pressed on the rear end face of the framework, and the framework is fixed on the winding shaft along the axial direction; when the framework is pulled out, the rear end of the framework compresses the front arm of the turnover arm, the front arm is pressed into the winding shaft, when the framework crosses the rear arm, the rear arm pops out, the framework is separated, and the winding shaft returns to the starting state. Improve the winding quality and avoid the injury of the top bead to the skeleton wall.

Description

Locking structure for fixing coil framework on winding shaft

Technical Field

The utility model relates to a fix the locking structure on the spool with coil skeleton, in particular to coil skeleton fixes the locking structure on the spool.

Background

In the process of winding a coil by the winding machine, the quality of the coil can be directly influenced by the fixing condition of the framework on the winding shaft. If the framework is fixed badly, the winding displacement is irregular, and the enameled wire can jump out of the winding slot even, so that the coil is scrapped.

In a conventional fixing mode, one or more spring ejecting balls are arranged on a winding shaft, and a framework is pressed on the winding shaft from the radial direction through the elastic force of the ejecting balls.

The disadvantage of this fixing method is that the framework fixed only by radial pressure needs to be axially positioned by friction, and the actual positioning is not reliable enough. Meanwhile, the inner wall of the framework can be scratched by overlarge internal pressure, and for high-voltage products, the scratch can bring about the hidden trouble that the framework is broken down by high voltage electricity. In addition, the inner wall of the injection molded framework is not strictly perpendicular to the end face due to the demoulding inclination or shrinkage deformation, and the end face is the reference plane of the winding. In other words, radial fixation does not accurately fix the frame in the desired position, and a more reliable, axially fixed locking structure is needed in the art.

The invention content is as follows:

in view of the problems existing in the prior art, the utility model provides a locking structure that coil skeleton was fixed on spool has realized the more reliable fixed of skeleton when wire winding. The specific technical scheme is that, a locking structure of coil skeleton fixed on spool, including spool body, upset arm, spacer pin, thrust spring, its characterized in that: the front end part of the cylindrical surface of the winding shaft body is provided with a pair of symmetrical rectangular holes, the centers of two side walls of the holes are provided with symmetrical blind holes, a limiting pin is fastened in the blind holes, the rear walls of the pair of symmetrical rectangular holes are provided with through holes, a thrust spring is arranged in the through holes and can be twisted and stretched, the overturning arm is an inequilateral U-shaped batten body with an opening larger than the bottom side, a rectangular convex fixing plate is arranged on the outer wall of the bottom side of the opening of the batten body, the thickness of the batten body is 1-3 mm, the opening length is 8-12 mm, the opening depth is 4-8mm, the two side edges of the opening are front arms, the shorter side is a rear arm, the fixing plates of the two overturning arms are respectively inserted into the inner diameters of two ends of the thrust spring and are arranged on the limiting pin of the winding shaft body, the rear arms are enabled to protrude out of the surface of the winding shaft body, and the overturning arms can rotate around the limiting pin.

The technical effect of the utility model is that can realize the skeleton through radial fixed mode and fix on the spool, improve the wire winding quality to avoid the injury of top pearl to skeleton bone wall.

Description of the drawings:

fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of the turning arm of the present invention;

fig. 3 is a schematic view of the framework radial fixing structure of the present invention.

The specific implementation mode is as follows:

the invention is further illustrated below with reference to the figures and examples.

Examples

As shown in fig. 1, 2 and 3, taking IG-9806 bobbin as an example,

the turning arm 2 is an inequilateral U-shaped batten body with an opening larger than the bottom edge, a rectangular convex fixing plate 2-1 is arranged on the outer wall of the opposite side of the opening edge of the batten body, the thickness of the batten body is 2mm, the opening width is 10cm, the depth is 5.5mm,

the front end part of the cylindrical surface of the spool body 1 is provided with a pair of symmetrical rectangular holes 1-1 with the depth of 9mm, the width of 2.2mm and the length of 16 mm.

The center of two side walls of the hole 1-1 is provided with a symmetrical blind hole, the limiting pin 3 is fastened in the blind hole, the back wall of a pair of symmetrical rectangular holes 1-1 is provided with a through hole, the thrust spring 4 is arranged in the through hole and can be twisted and stretched, the fixing plates 2-1 of the two overturning arms 2 are respectively inserted into the inner diameters of two ends of the thrust spring 4 and are arranged on the limiting pin 3 of the winding shaft body 1, so that the back arms 2-1 of the overturning arms 2 protrude out of the surface of the winding shaft body 1, and the overturning arms 2 can rotate around the limiting pin 3. The bobbin body 1 is arranged in the bobbin body 5 along the front end of the bobbin body 1, the rear arm 2-1 of the turnover arm 2 is pushed by the front end of the bobbin body 5, the thrust spring 4 is compressed, the turnover arm 2 retracts into the bobbin body 1, when the bobbin 5 exceeds the rear arm 2-1 of the turnover arm 2, the whole turnover arm 2 rotates along the limiting pin 3 under the action of the thrust spring 4, the front arm 2-2 of the turnover arm 2 pops out, the turned-out front arm 2-2 is pressed on the end face of the bobbin 5, and the bobbin 5 is pressed and fixed on the bobbin body 1 along the axial direction; when the bobbin 5 is pulled out, the rear end of the bobbin 5 pushes the front arm 2-2 of the overturning arm 2 to compress the thrust spring 4, the front arm 2-2 of the overturning arm 2 is pressed into the bobbin body 1, when the bobbin 5 passes over the rear arm 2-1 of the overturning arm, the rear arm 2-1 pops out, the bobbin 5 is separated, and the bobbin body 1 is restored to the initial state.

Claims

1. The utility model provides a locking structure of coil skeleton on spool is fixed, includes spool body (1), upset arm (2), spacer pin (3), thrust spring (4), its characterized in that: the front end part of the cylindrical surface of the bobbin body (1) is provided with a pair of symmetrical rectangular holes (1-1), the centers of two side walls of the holes (1-1) are provided with symmetrical blind holes, a limiting pin (3) is fastened in the blind holes, the rear wall of the pair of symmetrical rectangular holes (1-1) is provided with a through hole, a thrust spring (4) is arranged in the through hole and can be twisted and stretched, the overturning arm (2) is an inequilateral U-shaped batten body with an opening larger than the bottom edge, the outer wall of the bottom edge of the opening of the U-shaped batten body is provided with a rectangular raised fixing plate (2-3), the thickness of the plate body is 1-3 mm, the opening length is 8-12 mm, the opening depth is 4-8mm, the longer side of two side edges of the opening is a front arm (2-1), the shorter side is a rear arm (2-2), the fixing plates (2-3) of the two overturning arms (2) are respectively inserted into the inner diameters of two ends of the thrust spring (4), and is arranged on a limiting pin (3) of the bobbin body (1), so that the rear arm (2-2) of the turnover arm (2) protrudes out of the surface of the bobbin body (1), and the turnover arm (2) can rotate around the limiting pin (3).