阅读说明：本技术 具有锥形绕线轴结构的变压器骨架及变压器 (Transformer framework with conical winding shaft structure and transformer ) 是由 刘志光 于 2021-07-26 设计创作，主要内容包括：本发明公开一种具有锥形绕线轴结构的变压器骨架,包括有绕线轴和设置于绕线轴两端的上挡板、下挡板；绕线轴的内部中空并且上下贯穿于上挡板和下挡板,以形成磁芯槽；上挡板的左端设置有往左凸伸的上定位座,绕线轴的左、右侧分别设置有横向往外渐小设计的锥形凸部,使得：绕线轴的横截面呈左、右端渐小中间大的异形面,绕线轴的左、右侧壁厚均大于前、后侧壁厚,如此,其主要是将骨架的绕线轴设计成一种呈锥形状的设计,如同将绕组菱角边幅作了导角设计,线圈的形态随之变化,体积缩小,线圈匀称,磁芯装配不干涉,提高了磁芯装配时效,优化了装配瓶颈和影响生产效率的重要因素,可实现自动化磁芯与线包的装配。(The invention discloses a transformer framework with a conical winding shaft structure, which comprises a winding shaft, an upper baffle and a lower baffle, wherein the upper baffle and the lower baffle are arranged at two ends of the winding shaft; the inner part of the winding shaft is hollow and penetrates through the upper baffle plate and the lower baffle plate up and down to form a magnetic core groove; the left end of overhead gage is provided with the last positioning seat that stretches to the left, and the left and right side of spool is provided with the toper convex part of horizontal toward outer little-ending design respectively for: the cross section of the winding shaft is a special-shaped surface with the left end and the right end gradually reduced and the middle part is large, the wall thickness of the left side and the right side of the winding shaft is larger than that of the front side wall and the rear side wall, so that the winding shaft of the framework is mainly designed into a conical shape like a design of leading the corner of a winding water caltrop, the shape of a coil is changed along with the design, the volume is reduced, the coil is uniform, the magnetic core is assembled without interference, the assembling time efficiency of the magnetic core is improved, the assembling bottleneck and important factors influencing the production efficiency are optimized, and the automatic assembling of the magnetic core and a coil can be realized.)

1. The utility model provides a transformer skeleton with toper spool structure which characterized in that: comprises a winding shaft, an upper baffle and a lower baffle which are arranged at two ends of the winding shaft; the inner part of the winding shaft is hollow and penetrates through the upper baffle plate and the lower baffle plate up and down to form a magnetic core groove;

the left end of the upper baffle plate is provided with an upper positioning seat which protrudes leftwards, and the right end of the upper baffle plate is provided with an upper pin seat which protrudes rightwards; the left end of the lower baffle plate is provided with a lower positioning seat which protrudes leftwards, and the right end of the lower baffle plate is provided with a lower pin seat which protrudes rightwards;

the left and right sides of spool are provided with the toper convex part of horizontal toward outer little design respectively for: the cross section of spool is left and right ends and is personally submitted the big special-shaped face in the middle of the left and right ends is gradually littleer, the left and right side wall thickness of spool all is greater than preceding, the back side wall thickness.

2. The bobbin with the tapered bobbin structure of claim 1, wherein: the wall thicknesses of the left side and the right side of the winding shaft are equal, and the wall thicknesses of the front side and the rear side of the winding shaft are equal.

3. The bobbin with the tapered bobbin structure of claim 1, wherein: the outer ring surface of the winding shaft is formed by sequentially connecting a left V-shaped surface, a front side circular arc surface, a right V-shaped surface and a rear side circular arc surface.

4. The bobbin with the tapered bobbin structure of claim 1, wherein: the magnetic core groove of the winding shaft is circular, and the inner ring surface of the winding shaft is a cylindrical surface.

5. The bobbin with the tapered bobbin structure of claim 1, wherein: the upper pin seat is provided with an upper pin, the upper pin transversely extends out of the right side of the upper pin seat, the lower pin seat is provided with a lower pin, and the lower pin vertically extends out of the lower side of the lower pin seat so as to avoid an area between the upper pin seat and the lower pin seat.

6. The bobbin with the tapered bobbin structure of claim 3, wherein: the wall thickness of the whole winding shaft is designed to be gradually thinner from the outer top point of the conical convex part to the front side circular arc surface and the rear side circular arc surface respectively, and the wall thicknesses of the areas where the front side circular arc surface and the rear side circular arc surface are located are the same and are equal to the wall thickness of the thinnest part of the conical convex part.

7. The bobbin with the tapered bobbin structure according to claim 3 or 6, wherein: the front side arc surface and the rear side arc surface respectively occupy an angle of 100-120 degrees.

8. A transformer, characterized by: the transformer bobbin with the conical winding shaft structure is characterized by comprising a transformer bobbin, wherein the transformer bobbin is the transformer bobbin with the conical winding shaft structure, a winding is wound on the winding shaft, a magnetic core is installed in a magnetic core groove, the magnetic core is provided with a side plate and a magnetic column, the magnetic column extends into the magnetic core groove, and the side plate is positioned on the front side and the rear side of the transformer bobbin.

Technical Field

The invention relates to the technical field of transformers, in particular to a transformer framework with a conical winding shaft structure and a transformer.

Background

The bobbin, also known as a transformer bobbin, or transformer bobbin, is a major structural component of the transformer. The transformer is in present society by extensive use, and corresponding main part is also indispensable, so the skeleton has or not the effect that can replace, and current traditional design, skeleton design all are a circular or rectangle design, and the winding all is circular or rectangle winding on the spool, and the winding water caltrop is the key that influences magnetic core assembly difficulty most. As shown in fig. 7 and 8, it shows a structure situation that a transformer bobbin in the conventional technology adopts a circular winding shaft 1, the winding depth is shallow, the winding area is small, the window Kw factor is small, and during actual winding, in order to fully utilize the winding area, the windings 2 are often exposed to the bobbin 3 at two sides of the connection area, so that interference occurs when the magnetic core 4 is assembled, and the assembly efficiency of the magnetic core 4 is affected.

Therefore, a new technical solution is needed to solve the above problems.

Disclosure of Invention

In view of the above, the present invention is directed to the defects in the prior art, and the main object of the present invention is to provide a transformer bobbin with a tapered bobbin structure and a transformer, which solve the problems of difficult assembly of a magnetic core, low assembly efficiency, and small winding area, and simultaneously improve the quality of products.

In order to achieve the purpose, the invention adopts the following technical scheme:

a transformer framework with a conical winding shaft structure comprises a winding shaft, an upper baffle and a lower baffle, wherein the upper baffle and the lower baffle are arranged at two ends of the winding shaft; the inner part of the winding shaft is hollow and penetrates through the upper baffle plate and the lower baffle plate up and down to form a magnetic core groove;

the left end of the upper baffle plate is provided with an upper positioning seat which protrudes leftwards, and the right end of the upper baffle plate is provided with an upper pin seat which protrudes rightwards; the left end of the lower baffle plate is provided with a lower positioning seat which protrudes leftwards, and the right end of the lower baffle plate is provided with a lower pin seat which protrudes rightwards;

the left and right sides of spool are provided with the toper convex part of horizontal toward outer little design respectively for: the cross section of spool is left and right ends and is personally submitted the big special-shaped face in the middle of the left and right ends is gradually littleer, the left and right side wall thickness of spool all is greater than preceding, the back side wall thickness.

Preferably, the thicknesses of the left and right sides of the bobbin are equal, and the thicknesses of the front and rear sides of the bobbin are equal.

Preferably, the outer annular surface of the winding shaft is formed by sequentially connecting a left V-shaped surface, a front arc surface, a right V-shaped surface and a rear arc surface.

As a preferable scheme, the magnetic core slot of the winding shaft is circular, and the inner annular surface of the winding shaft is a cylindrical surface.

As a preferred scheme, be provided with the stitch on the last stitch seat, go up the stitch and transversely stretch out the right side of last stitch seat, be provided with down the stitch on the lower stitch seat, the lower stitch vertically stretches out the downside of lower stitch seat to regional formation is dodged between last stitch seat, the lower stitch seat.

Preferably, the wall thickness of the whole bobbin is designed to be gradually thinner from the outer vertex of the conical convex part to the front side circular arc surface and the rear side circular arc surface respectively, and the wall thicknesses of the areas where the front side circular arc surface and the rear side circular arc surface are located are the same and are equal to the wall thickness of the thinnest part of the conical convex part.

As a preferable scheme, the angles of the front side arc surface and the rear side arc surface are respectively 100-120 degrees.

A transformer, comprising a bobbin as claimed in any one of claims 1 to 7, wherein the bobbin has a tapered bobbin structure, the bobbin is wound with windings, the magnetic core is installed in the magnetic core slot, the magnetic core has a side plate and a magnetic column, the magnetic column extends into the magnetic core slot, and the side plate is located at the front and rear sides of the bobbin.

Compared with the prior art, the invention has obvious advantages and beneficial effects, and particularly, according to the technical scheme, the bobbin of the framework is designed into a conical shape, like the design of leading corners of the water caltrop side of the winding, the shape of the coil is changed along with the design, the volume is reduced, the coil is uniform, the magnetic core assembly is not interfered, the magnetic core assembly aging is greatly improved, the assembly bottleneck and important factors influencing the production efficiency are optimized, and the automatic assembly of the magnetic core and the coil can be realized, so that the product quality and the manufacturing efficiency are improved, the labor is saved, and the cost is reduced.

To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention;

FIG. 2 is another perspective view of an embodiment of the present invention;

FIG. 3 is a front view of an embodiment of the present invention;

FIG. 4 is a right side view of an embodiment of the present invention;

FIG. 5 is a cross-sectional view of an embodiment of the present invention;

FIG. 6 is a cross-sectional view of a bobbin of an embodiment of the present invention;

FIG. 7 is a cross-sectional view of a transformer bobbin of the prior art using a circular bobbin;

fig. 8 is a perspective view of a transformer bobbin using a circular bobbin in the conventional art.

The attached drawings indicate the following:

1. the magnetic core comprises a circular winding shaft 2, a winding wire 3, a framework 4, a magnetic core 10, a winding shaft 11, a conical convex part 13, a magnetic core groove 20, an upper baffle 21, an upper positioning seat 22, an upper pin seat 221, an upper pin 213, a left V-shaped surface 214, a right V-shaped surface 215, a front circular arc surface 216, a rear circular arc surface B, an outer vertex 30, a lower baffle 321, a lower pin 31, a lower positioning seat 32 and a lower pin seat.

Detailed Description

In the description of the present invention, it should be noted that, for the orientation words, such as the terms "upper", "lower", "front", "rear", "left", "right", etc., indicating the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation and operation, and should not be construed as limiting the specific scope of the present invention.

Referring to fig. 1 to 8, specific structures of the embodiments of the present invention are shown.

A transformer framework with a conical winding shaft structure comprises a winding shaft 10, and an upper baffle plate 20 and a lower baffle plate 30 which are arranged at two ends of the winding shaft 10; the bobbin 10 is hollow inside and penetrates the upper and lower baffles 20 and 30 up and down to form a magnetic core slot 13, and the magnetic core slot 13 is used for installing a magnetic core.

The main bodies of the upper baffle plate 20 and the lower baffle plate 30 are both circular; an upper positioning seat 21 protruding leftwards is arranged at the left end of the upper baffle plate 20, and an upper pin seat 22 protruding rightwards is arranged at the right end of the upper baffle plate 20; a lower positioning seat 31 protruding leftwards is arranged at the left end of the lower baffle 30, and a lower pin seat 32 protruding rightwards is arranged at the right end of the lower baffle 30; here, be provided with stitch 221 on the upper stitch seat 22, go up stitch 221 and transversely stretch out the right side of upper stitch seat 22, be provided with down stitch 321 on the lower stitch seat 32, down stitch 321 vertically stretches out the downside of lower stitch seat 32, and the regional formation is dodged between upper stitch seat 22, the lower stitch seat 32, can reserve for the wire winding entirely.

The left and right sides of the bobbin 10 are respectively provided with a conical convex part 11 which is designed to be gradually reduced outwards in the transverse direction, as shown in fig. 5, the cross section of the bobbin 10 is in a shape that the left end and the right end are gradually reduced and the middle is large, the wall thickness of the left side and the right side of the bobbin 10 are both larger than the wall thickness of the front side and the rear side, generally, the wall thickness of the left side and the right side of the bobbin 10 are equal, and the wall thickness of the front side and the rear side of the bobbin 10 are equal. The magnetic core slot 13 of the bobbin 10 is circular, the inner annular surface of the bobbin 10 is a cylindrical surface, and the outer annular surface of the bobbin 10 is formed by sequentially connecting a left V-shaped surface 213, a front arc surface 215, a right V-shaped surface 214, and a rear arc surface 216. Comparing fig. 5 and 7, the wall thickness of the bobbin of the conventional art is equal to the wall thickness of the bobbin of the present invention on the left and right sides, and the wall thickness of the bobbin of the present invention on the front and rear sides can be much smaller than the wall thickness of the bobbin of the conventional art, so that the winding depth of the present invention is deeper than that of the conventional art, and meanwhile, the areas of the upper positioning seat 21 and the lower positioning seat 22 on the left side and the upper pin seat 22 and the lower pin seat 32 on the right side are utilized ingeniously, the winding area of the present invention is significantly larger than that of the conventional art, and the Kw factor of the window is increased linearly. Moreover, due to the design of the left and right conical convex parts 11, the left V-shaped surface 213 and the right V-shaped surface 214 are provided for winding, and the positioning function can be well realized during winding, so that the edges of the water caltrop of the winding are like a lead angle, the coils are uniform, the winding area of the transformer with the same size is obviously increased, and the sizes of the transformer framework and the transformer can be effectively reduced if the winding area is the same; increase wire winding window coefficient Kw, utilized product window space greatly, and the wire winding location is accurate, inseparable, and the distance between winding and the winding is closer, and matching degree, intersection degree, the coupling degree between winding and the winding are higher for the leakage inductance (also refer to the magnetic leakage flux) and the coupling voltage (also refer to common mode voltage) characteristic of whole product is better.

Meanwhile, the front arc surface 215 and the rear arc surface 216 form a larger space with the corresponding front and rear outer edges of the upper baffle 20 and the lower baffle 30, so that the winding wires are prevented from being exposed on the framework at the front and rear sides (also indicating two sides of the wiring area), and the problem that the interference occurs when the magnetic core is assembled to influence the assembly efficiency of the magnetic core is solved. The winding shaft is more suitable for automatic assembly of the magnetic core and the coil, is favorable for improving the quality and the production efficiency of products, saves labor and reduces the cost.

Herein, a set of product design parameters is provided for comparison, as shown in fig. 5 and 7, if the outer diameter of the bobbin is 16.90 mm and the inner diameter of the winding slot is 8.80 mm in the conventional technique shown in fig. 7 and the technique of the present invention shown in fig. 5; the bobbin of the conventional art shown in fig. 7 has a wall thickness of 4.3 mm, a winding depth of 1.90 mm, and a winding area of about 26.90 mm; in the technique of the present invention shown in fig. 5, the wall thickness of the left and right sides of the bobbin is also designed to be 4.3 mm, considering that the small end of the tapered convex portion is smaller, the wall thickness can be designed to be a little larger, for example, 4.35 mm, the wall thickness of the front and rear side walls of the bobbin of the present invention can be designed to be 1.60 mm, the winding depth is 3.25 mm, which is 1.35 mm deeper than the winding depth of the conventional technique, and the winding area of the present invention can reach 42.70 mm square, which is 15.80 mm square larger than the winding area of the conventional technique. If the same winding wire diameter and the same number of turns are adopted and the same magnetic core is assembled, the novel scheme of the invention has the advantages of easier and more convenient manufacturing process, automation realization, stable manufacturing quality and good consistency.

In addition, in this embodiment, the front arc surface 215 and the rear arc surface 216 each occupy an angle a of 100 degrees and 120 degrees, and the wall thickness of the entire bobbin 10 is designed to be gradually thinner from the outer vertex B of the conical protrusion 11 to the front arc surface 215 and the rear arc surface 216, and the wall thicknesses of the regions where the front arc surface 215 and the rear arc surface 216 are located are generally the same and are equal to the wall thickness of the thinnest portion of the conical protrusion 11.

A transformer comprises the transformer framework, a winding is wound on a winding shaft 10, a magnetic core is installed in a magnetic core groove 13 and provided with a side plate and a magnetic column, the magnetic column extends into the magnetic core groove 13, and the side plate is located on the front side and the rear side of the transformer framework.

The design of the invention is characterized in that the bobbin of the framework is designed into a conical shape, like the design of leading angles of the water chestnut side of the winding, the shape of the coil is changed along with the design, the volume is reduced, the coil is uniform, the magnetic core is assembled without interference, the assembling time of the magnetic core is greatly improved, the assembling bottleneck and the important factors influencing the production efficiency are optimized, the automatic assembly of the magnetic core and the coil can be realized, the product quality and the manufacturing efficiency are improved, the labor is saved, and the cost is reduced.