Silicon steel punching with compact tooth slot butt joint structure

Abstract

The utility model relates to motor core technical field discloses a silicon steel punching sheet with compact tooth slot butt joint structure, including silicon steel sheet, butt joint mechanism and heat dissipation mechanism, the butt joint mechanism includes locating insert block, locating groove, tooth slot positioning boss, tooth slot positioning recess, spring piece, ejector shaft and top head, the locating insert block is cooperated with locating groove and realizes quick positioning, tooth slot positioning boss and tooth slot positioning recess cooperate and realize accurate positioning, the spring piece promotes the ejector shaft, makes the top head and butt joint tooth slot positioning boss's inner wall realize locking and push out, the heat dissipation mechanism includes heat dissipation ring, heat dissipation fin and the oval weight reduction hole of setting up on silicon steel sheet, the oval weight reduction hole inner wall sets up and has the flow guide groove. The utility model has realized accurate butt joint and firm locking of compact tooth slot, and has the effect of weight reduction and efficient heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of motor core technology, and in particular to a silicon steel lamination with a compact tooth groove mating structure. Background Technology

[0002] Silicon steel laminations are key components that make up the cores of motors, generators and transformers. A large number of laminations are usually stacked and fixed to form the core structure. In the design of high-performance or high-power-density motors, the tooth structure of the core is becoming increasingly compact, which places extremely high demands on the mating accuracy between laminations, especially the compact tooth structure.

[0003] Existing lamination stacking technologies, such as those relying solely on outline or simple locating pins for alignment, often struggle to guarantee the precision and stability of the mating process when dealing with compact toothed slots. This leads to decreased magnetic circuit performance, increased vibration and noise, low mating efficiency, and insufficient post-mating connection stability. Furthermore, with the increasing power density of motors, the heat generated by the iron core is enormous. Traditional silicon steel lamination structures are often heavy and lack dedicated internal heat dissipation channels, resulting in poor overall heat dissipation performance and limiting motor performance and lifespan.

[0004] Therefore, this utility model proposes a silicon steel lamination with a compact tooth groove mating structure to overcome the shortcomings of the prior art. Utility Model Content

[0005] In view of the problems existing in the prior art, such as low precision of compact tooth groove mating, unstable locking, low mating efficiency, large overall weight, and poor heat dissipation performance of silicon steel stampings, this utility model aims to provide a silicon steel stamping with a compact tooth groove mating structure that has been improved and can effectively solve the above problems.

[0006] This utility model provides a silicon steel sheet with a compact toothed groove docking structure, comprising: a silicon steel sheet, wherein the inner wall of the silicon steel sheet is provided with a compact toothed groove; and a docking mechanism and a heat dissipation mechanism, wherein the docking mechanism includes a positioning block, a positioning groove, a toothed groove positioning protrusion, a toothed groove positioning recess, a spring, an ejector shaft and a top head.

[0007] Furthermore, the positioning insert is inserted into the positioning groove, the toothed positioning protrusion is inserted into the toothed positioning groove, the ejector shaft is slidably disposed within the toothed positioning protrusion, the spring is used to push the ejector shaft, the push head is fixedly connected to the front side of the ejector shaft, and the push head is ejected into the groove on one side of the inner wall of the toothed positioning protrusion under the elastic force of the spring and abuts against the inner wall of the toothed positioning protrusion. The heat dissipation mechanism includes a heat dissipation ring and heat dissipation fins disposed on the silicon steel sheet, an elliptical weight reduction hole is provided on the silicon steel sheet, and guide grooves are provided on the upper and lower sides of the inner wall of the elliptical weight reduction hole.

[0008] Preferably, the positioning blocks are fixedly connected to the top of the silicon steel sheet at equal intervals, and the positioning grooves are equally spaced at the bottom of the silicon steel sheet.

[0009] Preferably, the ejector shaft slides on the inner wall of the toothed positioning protrusion.

[0010] Preferably, after the toothed positioning protrusion is inserted into the toothed positioning groove, the ejector shaft ejects the ejector head under the elastic force of the spring plate.

[0011] Preferably, the spring is sleeved on the ejector shaft and accommodated within the toothed positioning protrusion.

[0012] Preferably, the heat dissipation ring and the heat dissipation fins are used to receive heat transferred from the inner wall of the elliptical weight reduction hole.

[0013] Preferably, the elliptical weight-reducing holes are equidistantly spaced around the silicon steel sheet.

[0014] Preferably, the heat dissipation ring and the heat dissipation fins are disposed around the elliptical weight reduction hole.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model solves the problems of slow speed, low precision and loosening after docking of silicon steel stampings with compact tooth grooves in the prior art by setting a quick positioning structure composed of positioning blocks and positioning grooves, and a precision locking structure composed of tooth groove positioning protrusions, tooth groove positioning grooves and elastic locking mechanisms (including springs, ejector shafts and top heads), thus achieving the technical effect of fast, precise and stable locking.

[0017] 2. This utility model solves the problem of heavy weight and heat dissipation after stacking silicon steel sheets in the prior art by opening elliptical weight-reduction holes and setting flow guide grooves on the inner wall of the holes, and then working together with heat dissipation rings and heat dissipation fins. It achieves the technical effect of effectively reducing weight and greatly improving heat dissipation performance. Attached Figure Description

[0018] Figure 1 This is a perspective view of a silicon steel lamination with a compact toothed groove mating structure proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the positioning groove of a silicon steel stamping with a compact toothed groove mating structure proposed in this utility model;

[0020] Figure 3 This is an exploded view of the docking mechanism of a silicon steel lamination with a compact toothed joint structure proposed in this utility model.

[0021] Figure 4 This is an exploded view of the heat dissipation mechanism of a silicon steel lamination with a compact toothed joint structure proposed in this utility model.

[0022] Legend:

[0023] 1. Silicon steel sheet; 2. Docking mechanism; 201. Positioning insert; 202. Positioning groove; 203. Toothed positioning protrusion; 204. Toothed positioning groove; 205. Spring piece; 206. Ejector shaft; 207. Ejector head; 3. Heat dissipation mechanism; 301. Heat dissipation ring; 302. Heat dissipation fins; 303. Elliptical weight reduction hole; 304. Guide groove; 4. Compact toothed groove. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] Example:

[0026] Please refer to Figures 1 to 4This utility model embodiment provides a silicon steel stamping with a compact toothed groove docking structure, including a silicon steel sheet 1. The inner wall of the silicon steel sheet 1 has compact toothed grooves 4. The silicon steel sheet 1 serves as the basic carrier of the entire device. The silicon steel stamping with a compact toothed groove docking structure also includes a docking mechanism 2 and a heat dissipation mechanism 3 disposed on the silicon steel sheet 1. The docking mechanism 2 is used to achieve rapid positioning and precise locking between the compact toothed grooves 4 when multiple silicon steel sheets 1 are stacked. The heat dissipation mechanism 3 is used to reduce the weight of the silicon steel sheet 1 and improve its heat dissipation performance. The docking mechanism 2 includes a positioning insert 201, a positioning groove 202, a toothed groove positioning protrusion 203, a toothed groove positioning recess 204, a spring 205, an ejector shaft 206, and a top head 207. The positioning insert 201 is equidistantly fixedly connected to the top of the silicon steel sheet 1, and the positioning groove 202, etc. The positioning insert 201 is inserted into the positioning groove 202 when the silicon steel sheet 1 is stacked, and the toothed positioning protrusion 203 is inserted into the toothed positioning groove 204. The ejector shaft 206 is slidably disposed in the toothed positioning protrusion 203. The spring piece 205 is used to push the ejector shaft 206. The top head 207 is fixedly connected to the front side of the ejector shaft 206. When docking, the top head 207 is ejected into the groove on one side of the inner wall of the toothed positioning protrusion 203 under the elastic force of the spring piece 205 and abuts against the inner wall of the toothed positioning protrusion 203. The heat dissipation mechanism 3 includes a heat dissipation ring 301 and heat dissipation fins 302 disposed on the silicon steel sheet 1. The silicon steel sheet 1 is provided with an elliptical weight reduction hole 303. The elliptical weight reduction hole 303 is equidistantly disposed around the silicon steel sheet 1. The upper and lower sides of the inner wall of the elliptical weight reduction hole 303 are provided with guide grooves 304.

[0027] Please refer to Figure 1 , Figure 2 and Figure 3The docking mechanism 2 includes positioning blocks 201 and positioning grooves 202 disposed on different silicon steel sheets 1. The positioning blocks 201 are fixedly connected to the top of the silicon steel sheets 1 at equal intervals, and the positioning grooves 202 are equally spaced at the bottom of the silicon steel sheets 1. When two silicon steel sheets 1 are stacked, the positioning blocks 201 are inserted into the positioning grooves 202 of the corresponding lower silicon steel sheet 1 to achieve rapid initial alignment. During this process, the toothed positioning protrusions 203 are inserted into the corresponding toothed positioning grooves 204 to achieve further precise positioning. In order to achieve locking after precise positioning, a locking component is provided inside the toothed positioning protrusions 203. The locking component includes an ejector shaft 206, a spring piece 205, and a top head 207. The ejector shaft 206 is slidably disposed on the toothed positioning protrusion. Inside 203, the ejector shaft 206 slides on the inner wall of the toothed positioning protrusion 203. The spring piece 205 is sleeved on the ejector shaft 206 and accommodated in the toothed positioning protrusion 203. The spring piece 205 is used to push the ejector shaft 206. The top head 207 is fixedly connected to the front side of the ejector shaft 206. When the toothed positioning protrusion 203 is inserted into the toothed positioning groove 204, the ejector shaft 206 pushes out the top head 207 on the front side under the elastic force applied by the spring piece 205. The top head 207 is pushed out into the groove on one side of the inner wall of the toothed positioning protrusion 203 and abuts against the inner wall of the toothed positioning protrusion 203. This method of locking by the top head 207 completes the precise docking and locking of the compact toothed groove 4 between the two silicon steel sheets 1.

[0028] In a preferred embodiment, in order to ensure interchangeability and alignment accuracy during stacking, the positioning blocks 201 are fixedly connected to the top of the silicon steel sheet 1 at equal intervals, and the positioning grooves 202 are equally spaced at the bottom of the silicon steel sheet 1.

[0029] As another preferred embodiment, in order to limit the installation method of the spring piece 205 and ensure stable elastic force, the spring piece 205 is sleeved on the ejector shaft 206 and accommodated in the toothed positioning protrusion 203. The two ends of the spring piece 205 respectively abut against the flange on the ejector shaft 206 and the inner wall of the toothed positioning protrusion 203.

[0030] As another preferred embodiment, in order to achieve uniform weight reduction and heat dissipation distribution, elliptical weight reduction holes 303 are equally spaced around the silicon steel sheet 1.

[0031] In another preferred embodiment, in order to enhance the heat transfer path and increase the heat dissipation area, a heat dissipation ring 301 and a heat dissipation fin 302 are disposed around the elliptical weight reduction hole 303. The heat dissipation ring 301 and the heat dissipation fin 302 are used to receive the heat transferred from the inner wall of the elliptical weight reduction hole 303 and transfer it to the external cooling medium.

[0032] Working principle: When the silicon steel sheets are joined, the positioning grooves 202 at equal intervals on the bottom of the silicon steel sheet 1 are aligned with the positioning blocks 201 at equal intervals fixed to the top of the other silicon steel sheet 1 and inserted to complete the rapid positioning between the two silicon steel sheets 1. During this process, the toothed positioning protrusions 203 are inserted into the corresponding toothed positioning grooves 204. When the toothed positioning protrusions 203 are inserted into place, the ejector shaft 206 sliding on the inner wall of the toothed positioning protrusions 203 pushes the top head 207 fixed to the front side into the groove on one side of the inner wall of the toothed positioning protrusions 203 under the elastic force of the spring piece 205. At this time, the top head 207 abuts against the inner wall of the toothed positioning protrusions 203, completing the precise docking between the compact toothed grooves 4 opened on the inner walls of the two silicon steel sheets 1.

[0033] Furthermore, when it is necessary to reduce the weight of the silicon steel sheet 1 and improve its heat dissipation, the heat dissipation mechanism 3 comes into play. Elliptical weight reduction holes 303 are equidistantly opened around the silicon steel sheet 1. The elliptical weight reduction holes 303, with their elliptical design, can better adapt to the magnetic field distribution in a specific direction, reducing the impact on the magnetic circuit. Each elliptical weight reduction hole 303 has a guide groove 304 on its upper and lower inner walls. The guide groove 304 facilitates the flow of the cooling medium. When the stacked silicon steel sheet 1 is running, the heat generated will be transferred from the inner wall of the elliptical weight reduction hole 303 to the heat dissipation ring 301 and heat dissipation fins 302 for heat dissipation. At this time, the heat dissipation ring 301, heat dissipation fins 302 and guide groove 304 around the elliptical weight reduction hole 303 work together to receive the heat transferred from the inner wall of the elliptical weight reduction hole 303 and achieve a better heat dissipation effect.

Claims

1. A silicon steel lamination with a compact toothed joint structure, comprising: Silicon steel sheet (1), wherein the inner wall of the silicon steel sheet (1) is provided with compact toothed grooves (4); The invention is characterized by further including a docking mechanism (2) and a heat dissipation mechanism (3). The docking mechanism (2) includes a positioning block (201), a positioning groove (202), a toothed positioning protrusion (203), a toothed positioning groove (204), and a spring piece (205). The positioning block (201) is inserted into the positioning groove (202), and the toothed positioning protrusion (203) is inserted into the toothed positioning groove (204). An ejector shaft (206) is slidably arranged inside the toothed positioning protrusion (203). The spring piece (205) is used to push the ejector shaft (206). A top head (207) is fixedly connected to the front side of the ejector shaft (206). The top head (207) is ejected into the groove on one side of the inner wall of the toothed positioning protrusion (203) under the elastic force of the spring piece (205) and abuts against the inner wall of the toothed positioning protrusion (203). The heat dissipation mechanism (3) includes a heat dissipation ring (301) and heat dissipation fins (302) disposed on the silicon steel sheet (1). An elliptical weight reduction hole (303) is provided on the silicon steel sheet (1), and a guide groove (304) is provided on the upper and lower sides of the inner wall of the elliptical weight reduction hole (303).

2. A silicon steel lamination with a compact toothed joint structure according to claim 1, characterized in that, The positioning blocks (201) are fixedly connected to the top of the silicon steel sheet (1) at equal intervals, and the positioning grooves (202) are opened at equal intervals at the bottom of the silicon steel sheet (1).

3. A silicon steel lamination with a compact toothed joint structure according to claim 1, characterized in that, The ejector shaft (206) slides on the inner wall of the toothed positioning protrusion (203).

4. A silicon steel lamination with a compact toothed joint structure according to claim 1, characterized in that, When the toothed positioning protrusion (203) is inserted into the toothed positioning groove (204) in place, the ejector shaft (206) ejects the top head (207) under the elastic force of the spring piece (205).

5. A silicon steel lamination with a compact toothed joint structure according to claim 3, characterized in that, The spring piece (205) is sleeved on the ejector shaft (206) and accommodated in the toothed positioning protrusion (203).

6. A silicon steel lamination with a compact toothed joint structure according to claim 1, characterized in that, The heat dissipation ring (301) and heat dissipation fins (302) are used to receive heat transferred from the inner wall of the elliptical weight reduction hole (303).

7. A silicon steel lamination with a compact toothed joint structure according to claim 1, characterized in that, The elliptical weight-reducing holes (303) are equidistantly opened around the silicon steel sheet (1).

8. A silicon steel lamination with a compact toothed joint structure according to claim 6, characterized in that, The heat dissipation ring (301) and the heat dissipation fins (302) are disposed around the elliptical weight reduction hole (303).

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