CN216774409U - Iron core stack riveting structure - Google Patents
Iron core stack riveting structure Download PDFInfo
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- CN216774409U CN216774409U CN202123125916.4U CN202123125916U CN216774409U CN 216774409 U CN216774409 U CN 216774409U CN 202123125916 U CN202123125916 U CN 202123125916U CN 216774409 U CN216774409 U CN 216774409U
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Abstract
The utility model discloses a laminated riveting structure of an iron core, which comprises N iron core single sheets which are laminated from top to bottom, wherein the continuous M iron core single sheets positioned at the bottom in the N iron core single sheets are provided with punching holes only, the first sheet and the tail sheet of the rest (N-M) iron core single sheets are provided with buckling points, and the (N-M-2) iron core single sheets except the first sheet and the tail sheet are provided with buckling points and/or punching holes; in the (N-M-2) iron core single sheets except the first sheet and the tail sheet, the buckling point of each iron core single sheet with the buckling point continuously penetrates through the punched hole of the (M-1) iron core single sheet from top to bottom and then is buckled with the buckling point of the other iron core single sheet; the tail pieces of the rest (N-M) iron core single pieces are connected with the continuous M iron core single pieces at the bottom through buckling points. The iron core single sheets are tightly laminated, and the buckling points do not protrude to the outer side of the bottom punching sheet.
Description
Technical Field
The utility model relates to the technical field of motor iron core manufacturing, in particular to a laminated riveting structure of an iron core.
Background
The current adopts between the monolithic of the range upon range of iron core of motor to detain the point connection commonly, also cut out on the iron core monolithic of bottommost and punch a hole, all blanking knot points on all the other iron core monoliths, also only a slice of punching hole piece (the piece of punching hole also is called the measurement piece, be used for the measurement) in the whole iron core, all the other are the knot point piece, this kind of iron core connection structure is when detaining some outstanding distance great, some knot points can be salient to the below of punching a hole of bottommost, and all the other adjacent knot point pieces are combining, can produce between knot point and the knot point and interfere, the interference of knot point can cause and produce the clearance between piece and the piece, the clearance can lead to the fold the rate of pressure step-down of product from the existence, the rate of pressure of folding of product is: the actual thickness of a single sheet of the material is multiplied by the number of sheets/the actual height of a product, the lamination rate of the existing laminated structure of the iron core is generally less than 98%, the lamination rate of the iron core is difficult to guarantee as the material is thinner, and the lamination rate not only relates to the size precision of the iron core, but also influences the performance of the motor. Therefore, it is highly desirable to develop an iron core structure with a higher lamination ratio, so as to effectively eliminate the gap between the sheets caused by the buckling point interference.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a laminated riveting structure of an iron core. The iron core single sheets are tightly laminated, and the buckling points do not protrude to the outer side of the bottom punching sheet.
The technical scheme of the utility model is as follows: a laminated riveting structure of an iron core comprises N iron core single sheets which are laminated from top to bottom, wherein punching holes are arranged on continuous M iron core single sheets positioned at the bottom in the N iron core single sheets, buckling points are arranged on the first sheet and the tail sheet of the rest (N-M) iron core single sheets, and buckling points and/or punching holes are arranged on the (N-M-2) iron core single sheets except the first sheet and the tail sheet; in the (N-M-2) iron core single sheets except the first sheet and the tail sheet, the buckling point of each iron core single sheet with the buckling point continuously penetrates through the punched hole of the (M-1) iron core single sheet from top to bottom and then is buckled with the buckling point of the other iron core single sheet; the tail pieces of the rest (N-M) iron core single pieces are connected with the continuous M iron core single pieces at the bottom through buckling points.
Compared with the prior art, the utility model has the beneficial effects that: the gaps between the iron core single sheets are effectively eliminated by adjusting the arrangement of the buckling points and the punching holes on the iron core, particularly, the buckling points of the iron core single sheets with the buckling points can penetrate through a certain number of the iron core single sheets with the punching holes before being combined with the next buckling point, so that a larger space is provided for the combination between the buckling points, the interference phenomenon between the buckling points and the buckling points is relieved, and the protruding distance of the buckling points is larger.
In the aforesaid fold structure of riveting of iron core, M's value is 2, and its bottom of knot point of iron core monolithic that has the knot point is greater than the thickness of iron core monolithic and is less than the twice of iron core monolithic thickness to the shortest distance between the iron core monolithic lower surface, should set up and guaranteed that the knot point can not bulge to the outside of bottom punching sheet, also makes the knot point of iron core monolithic can two iron core monolithic of downwardly connected simultaneously.
In the laminated riveting structure of the iron core, 2 iron core single sheets at the bottom are removed, and the rest (N-2) iron core single sheets are provided with a plurality of fastening points or a plurality of punching holes;
or 2 iron core single sheets at the bottom are removed, the remaining (N-2) iron core single sheets are provided with the buckling points and the punching holes, all the buckling points and the punching holes on the same iron core single sheet are uniformly distributed along the same circumference, and one punching hole is arranged between every two adjacent buckling points.
The iron core single sheet is provided with a plurality of buckling points or a plurality of punched holes, so that the processing of the buckling points or the punched holes is convenient, and the processing is finished only at two stations; and the iron core single sheet is provided with the buckling points and the punching holes, and the processing is required to be completed at three stations.
In the foregoing laminated rivet structure for an iron core, when the remaining (N-2) iron core sheets have and are only provided with a plurality of fastening points or a plurality of punched holes, when N is an odd number, the punched holes are provided on the second iron core sheet from top to bottom, and the fastening points of the first iron core sheet pass through the punched holes of the second iron core sheet and then are fastened with the fastening points of the third iron core sheet.
In the foregoing laminated rivet structure for an iron core, when the remaining (N-2) iron core sheets have and are only provided with a plurality of fastening points or a plurality of punched holes, and N is an even number, the fastening points are provided on the second iron core sheet from top to bottom, and the fastening points of the first iron core sheet are directly fastened with the fastening points of the second iron core sheet.
In the foregoing laminated rivet structure for an iron core, when the remaining (N-2) iron core sheets are provided with both the fastening point and the punched hole, in the remaining (N-2) iron core sheets, the fastening point on each iron core sheet passes through the punched hole of the next iron core sheet, that is, two adjacent iron core sheets are placed in a staggered manner, and two iron core sheets at intervals are placed in a completely identical manner.
Drawings
FIG. 1 is a sectional view showing a part of the internal structure of the present invention in example 1;
FIG. 2 is a sectional view showing a part of the internal structure of the present invention in embodiment 2;
fig. 3 is a plan view of the present invention in example 3.
The description of the core single piece, the button point and the punching hole appears many times in the utility model, so the core single piece, the button point and the punching hole in the embodiment 1 are respectively represented by A1, B1 and C1 in the drawing; the core single piece, the button point and the punching hole in the embodiment 2 are respectively represented by A2, B2 and C2; the core segments, the button points and the punched holes in example 3 are denoted by a3, B3 and C3, respectively.
Detailed Description
The utility model is further illustrated by the following figures and examples, which are not to be construed as limiting the utility model.
Example 1: a laminated riveting structure of an iron core is shown in figure 1 and comprises 13 iron core single sheets which are laminated from top to bottom, wherein 2 continuous iron core single sheets positioned at the bottom in the 13 iron core single sheets are provided with only punched holes, the shortest distance between the bottom end of a buckling point of the iron core single sheet with the buckling point and the lower surface of the iron core single sheet is greater than the thickness of the iron core single sheet and less than twice the thickness of the iron core single sheet, buckling points are only arranged on a head sheet and a tail sheet of the remaining 11 iron core single sheets, buckling points or punched holes are arranged on the middle 9 iron core single sheets except the head sheet and the tail sheet, buckling point sheets are defined as buckling point sheets only, punching sheets are defined as punching sheets only, and the 11 iron core single sheets are laminated from top to bottom according to the sequence of the buckling point sheets, the punching sheets, the buckling point sheets, the punching sheets and the buckling point sheets; in 11 iron core single sheets, the buckling point of each iron core single sheet with the buckling point penetrates through the punched holes of 1 iron core single sheet from top to bottom and then is buckled with the buckling point of the other iron core single sheet; the tail piece of the 11 iron core single pieces is connected with the continuous 2 iron core single pieces at the bottom through the buckling points, and the buckling points at the bottom cannot protrude.
Preferably, each single iron core sheet is provided with 8 punched holes or buckling points.
Since the total number of the iron cores is 13, the punching holes are arranged on the second iron core single sheet from top to bottom, so that the gap between the iron core single sheets in the embodiment can be close to 0, specifically, as shown in fig. 1, the laminating rate of the product can be more than 98.5%.
Example 2: a structure of a laminated rivet of an iron core is shown in figure 2 and comprises 14 iron core single sheets which are laminated from top to bottom, wherein 2 continuous iron core single sheets positioned at the bottom in the 14 iron core single sheets are provided with only punched holes, the shortest distance between the bottom end of a fastening point of the iron core single sheet with the fastening point and the lower surface of the iron core single sheet is greater than the thickness of the iron core single sheet and less than twice the thickness of the iron core single sheet, the head sheet and the tail sheet of the rest 12 iron core single sheets are provided with only fastening points, the middle 10 iron core single sheets except the head sheet and the tail sheet are provided with fastening points or punched holes, the fastening point sheet is defined as the fastening point sheet, the punched hole sheet is defined as the punched hole sheet as the middle 10 iron core single sheets, and the 12 iron core single sheets are laminated from top to bottom according to the sequence of the fastening point sheet, the punched hole sheet, the fastening sheet, the punching sheet, the punching sheet and the punching sheet, the punching sheet, the punching sheet, and the punching sheet, the punching sheet; in 12 iron core single sheets, except the first sheet, the buckling point of each iron core single sheet with the buckling point penetrates through the punched holes of 1 iron core single sheet from top to bottom and then is buckled with the buckling point of the other iron core single sheet; the tail piece of the 12 iron core single pieces is connected with the continuous 2 iron core single pieces at the bottom through the buckling points, and the buckling points at the bottom cannot protrude.
Preferably, each single iron core sheet is provided with 8 punched holes or buckling points.
Because the total number of the iron cores is 14, the buckling points are arranged on the second iron core single sheet from top to bottom, and a unit gap is generated after the second iron core single sheet is connected with the first iron core, but the lamination rate is still superior to that of the existing iron core lamination structure, specifically shown in fig. 2, and the lamination rate of the product is very close to that of the embodiment 1.
Example 3: a laminated riveting structure of an iron core is shown in a top view structure as figure 3, and comprises 14 iron core single sheets which are laminated from top to bottom, wherein the continuous 2 iron core single sheets positioned at the bottom in the 14 iron core single sheets are provided with only punching holes, the shortest distance between the bottom end of a fastening point of the iron core single sheet with the fastening point and the lower surface of the iron core single sheet is larger than the thickness of the iron core single sheet and is less than twice of the thickness of the iron core single sheet, the rest 12 iron core single sheets are provided with both the fastening point and the punching holes, all the fastening points and the punching holes on the same iron core single sheet are uniformly distributed along the same circumference, a punching hole is arranged between every two adjacent fastening points, in the 12 iron core single sheets, the fastening point on each iron core single sheet penetrates through the punching hole of the next iron core single sheet, namely, the two adjacent iron core single sheets are staggered, the two iron core single sheets at intervals are completely and uniformly arranged, namely the fastening points of the two iron core single sheets at intervals are mutually fastened, the tail piece of the 12 iron core single pieces is connected with the continuous 2 iron core single pieces at the bottom through the buckling points, and the buckling points at the bottom cannot protrude.
Preferably, 4 buckling points and 4 punched holes are arranged on the front 12 iron core sheets, and 8 punched holes are arranged on the rear 2 iron core sheets.
In the embodiment, no matter the total number of the iron core sheets is odd or even, the gaps between the iron core single sheets can be close to 0, and the laminating rate of the product can be more than 98.5%.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The above are only preferred embodiments of the present invention, and the scope of the present invention is not limited to the above examples, and all technical solutions that fall under the spirit of the present invention belong to the scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.
Claims (7)
1. The utility model provides a structure is riveted to folding of iron core, includes N piece iron core monolithic from top to bottom range upon range of, its characterized in that: the continuous M iron core single sheets positioned at the bottom in the N iron core single sheets are provided with only punched holes, the first sheet and the tail sheet of the rest (N-M) iron core single sheets are provided with buckling points, and the (N-M-2) iron core single sheets except the first sheet and the tail sheet are provided with buckling points and/or punched holes; in the (N-M-2) iron core single sheets except the first sheet and the tail sheet, the buckling point of each iron core single sheet with the buckling point continuously penetrates through the punched hole of the (M-1) iron core single sheet from top to bottom and then is buckled with the buckling point of the other iron core single sheet; the tail pieces of the rest (N-M) iron core single pieces are connected with the continuous M iron core single pieces at the bottom through buckling points.
2. The laminated rivet structure of an iron core according to claim 1, characterized in that: the value of M is 2, and the shortest distance between the bottom end of the buckling point of the iron core single sheet with the buckling point and the lower surface of the iron core single sheet is larger than the thickness of the iron core single sheet and is smaller than twice of the thickness of the iron core single sheet.
3. The laminated rivet structure of an iron core according to claim 2, wherein: and 2 iron core single sheets at the bottom are removed, and the rest (N-2) iron core single sheets are provided with a plurality of buckling points or a plurality of punching holes.
4. The laminated rivet structure of the iron core according to claim 2, characterized in that: removing 2 iron core single sheets at the bottom, arranging buckling points and punching holes on the rest (N-2) iron core single sheets, uniformly distributing all the buckling points and the punching holes on the same iron core single sheet along the same circumference, and arranging one punching hole between every two adjacent buckling points.
5. The laminated rivet structure of an iron core according to claim 3, wherein: and when N is an odd number, a punched hole is formed in the second iron core single sheet from top to bottom, and the buckling point of the first iron core single sheet passes through the punched hole of the second iron core single sheet and then is buckled with the buckling point of the third iron core single sheet.
6. The laminated rivet structure of an iron core according to claim 3, wherein: when N is an even number, a buckling point is arranged on the second iron core single sheet from top to bottom, and the buckling point of the first iron core single sheet is directly buckled with the buckling point of the second iron core single sheet.
7. The laminated rivet structure of an iron core according to claim 4, wherein: in the remaining (N-2) iron core single sheets, the buckling point on each iron core single sheet penetrates through the punched hole of the next iron core single sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123125916.4U CN216774409U (en) | 2021-12-10 | 2021-12-10 | Iron core stack riveting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123125916.4U CN216774409U (en) | 2021-12-10 | 2021-12-10 | Iron core stack riveting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216774409U true CN216774409U (en) | 2022-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123125916.4U Active CN216774409U (en) | 2021-12-10 | 2021-12-10 | Iron core stack riveting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216774409U (en) |
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2021
- 2021-12-10 CN CN202123125916.4U patent/CN216774409U/en active Active
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