A transformer core for improving assembly efficiency

Abstract

This utility model discloses a transformer core for improving assembly efficiency. The transformer core includes a first core substrate and a second core substrate. The first core substrate has a plurality of stacked first iron chips on its upper surface, and the second core substrate has a plurality of stacked second iron chips on its upper surface. Both the first and second core substrates have a plurality of equally spaced through holes. The first and second iron chips have protrusions that are embedded in the through holes. The back surfaces of the first and second iron chips have first grooves for adjacent protrusions to be embedded in. By embedding protrusions into the through holes or first grooves, the stacked cores are aligned in the vertical and horizontal directions, ensuring positional consistency and avoiding friction between adjacent iron chips during stacking, thus improving assembly efficiency. Multiple snap-fit ​​connections enhance the connection strength and stability between the core assemblies.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to a transformer core that improves assembly efficiency. Background Technology

[0002] The transformer core, as the main magnetic circuit component of a transformer, is generally made of hot-rolled or cold-rolled silicon steel sheets with a high silicon content and coated with insulating varnish. Together with the coils wound on it, it forms a complete electromagnetic induction system. The power transmitted by a power transformer is affected by the core material and cross-sectional area, and the transformer core is usually composed of multiple identical components.

[0003] When assembling iron cores, manually stacking multiple cores is a common operation. During stacking, it is necessary to ensure that all cores are on the same horizontal plane to guarantee subsequent processing. However, it is difficult to place the cores neatly during stacking and assembly, and frequent straightening is required, which reduces assembly efficiency. At the same time, the friction between the cores generates metal powder, which is magnetic and attracts other impurities in the environment to form mixed particles, further aggravating friction. Therefore, the applicant has made a beneficial design and found a solution to the above problems. The technical solution described below arose in this context. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of traditional transformer core designs and provide a product that improves assembly efficiency.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A transformer core for improving assembly efficiency includes a first core substrate and a second core substrate. The first core substrate has a plurality of first iron chips stacked on top of it, and the second core substrate has a plurality of second iron chips stacked on top of it. The first and second core substrates have a plurality of equally spaced through holes. The first and second iron chips have protrusions that are embedded in the through holes. The back of the first and second iron chips has a first groove for adjacent protrusions to be embedded in. The first core substrate and the second core substrate, as well as the first and second iron chips, are connected and fixed by snap-fit ​​connections.

[0007] Preferably, the protrusion has a chamfer at the point of entry into the through hole or the first groove, and the depth to which the protrusion is embedded in the through hole is less than the depth of the through hole.

[0008] Preferably, the first iron core substrate and the first iron chip are provided with at least two connecting ends, the connecting ends are provided with a second groove, the entrance of the second groove is provided with inclined guide portions on both sides, and one end of the second groove is provided with at least one connecting hole.

[0009] Preferably, the second iron core substrate and the second iron chip are provided with inserts and inserted into the second groove. The inserts are provided with anti-retraction parts and embedded in the connection holes. The anti-retraction parts are provided with inclined surfaces at the point where they enter the second groove.

[0010] Preferably, the insert and the back wall of the second groove maintain a distance between the anti-retraction part and the insert entering the second groove.

[0011] Preferably, the latch is provided as a stop-retraction part.

[0012] Beneficial effects:

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] (1) This utility model uses a method of embedding protrusions into through holes or first grooves to keep stacked iron cores aligned in the up, down, left and right directions, ensuring positional consistency, creating convenient conditions for subsequent processing, and avoiding friction between adjacent iron chips during stacking, thus improving assembly efficiency.

[0015] (2) This utility model adopts a snap-fit ​​connection structure, which facilitates the quick fixing of the first iron core group and the second iron core group, ensures the neatness after assembly, simplifies the subsequent installation and fixing process, maintains the consistency of the product, and the setting of multiple snap-fits further enhances the connection stability and overall strength between the iron core groups. At the same time, this alignment and connection method also reduces the error caused by manual adjustment, helps to improve the accuracy of the overall stacking, and lays a good foundation for subsequent automated detection or processing steps, reducing material loss and potential safety risks during the assembly process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a transformer core for improving assembly efficiency according to the present invention;

[0017] Figure 2 This is an exploded structural diagram of a transformer core for improving assembly efficiency according to the present invention.

[0018] Figure 3 This utility model Figure 2 A partially enlarged view (A) of a transformer core designed to improve assembly efficiency;

[0019] Figure 4 This is a side cross-sectional view of a transformer core that improves assembly efficiency according to the present invention.

[0020] Figure 5 This utility model Figure 4 A partially enlarged view (B) of a transformer core designed to improve assembly efficiency;

[0021] Figure 6 This is a side cross-sectional view of a transformer core that improves assembly efficiency according to the present invention.

[0022] Figure 7 This utility model Figure 6 A partially enlarged view (C) of a transformer core designed to improve assembly efficiency;

[0023] The correspondence between the labels and component names in the attached figures is as follows:

[0024] Reference numerals: 1. First iron core substrate; 2. Second iron core substrate; 3. Through hole; 4. Protrusion; 5. First groove; 6. Connecting end; 7. Insert; 11. First iron chip; 21. Second iron chip; 41. Chamfer; 61. Second groove; 62. Guide part; 63. Connecting hole; 71. Anti-retraction part; 72. Inclined surface. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0028] Reference example Figures 1 to 7A transformer core for improving assembly efficiency includes a first core substrate 1 and a second core substrate 2. The first core substrate 1 has a plurality of stacked first iron chips 11 on its upper surface, and the second core substrate 2 has a plurality of stacked second iron chips 21 on its upper surface. The first core substrate 1 and the second core substrate 2 have a plurality of equally spaced through holes 3. The first iron chips 11 and the second iron chips 21 have protrusions 4 that are embedded in the through holes 3. The back of the first iron chips 11 and the second iron chips 21 has a first groove 5 for the adjacent protrusions 4 to be embedded in. The first core substrate 1 and the second core substrate 2, and the first iron chips 11 and the second iron chips 21 are connected and fixed by snap-fit ​​connections. By embedding the protrusions 4 into the through holes 3 or the first grooves 5, the stacked cores are kept aligned in the vertical and horizontal directions, ensuring positional consistency and creating convenient conditions for subsequent processing. This also avoids friction between adjacent iron chips during stacking, thus improving assembly efficiency.

[0029] It is worth mentioning that the bump 4 has a chamfer 41 at the entry point of the through hole 3 or the first groove 5. The depth of the bump 4 embedded in the through hole 3 is less than the depth of the through hole 3. The chamfer 41 facilitates smooth entry into the first groove 5. The height of the bump 4 is less than the depth of the through hole 3. This design prevents it from protruding from the surface of the substrate and avoids interfering with the assembly of the coil winding post.

[0030] It is worth mentioning that the first iron core substrate 1 and the first iron chip 11 are provided with at least two connecting ends 6. The connecting ends 6 are provided with a second groove 61. The entrance of the second groove 61 is provided with inclined guide parts 62 on both sides. One end of the second groove 61 is provided with at least one connecting hole 63. The guide part 62 allows the insert 7 to smoothly enter the second groove 61 and plays a guiding role. The connecting hole 63 is used in conjunction with the anti-retraction part 71.

[0031] It is worth mentioning that the second iron core substrate 2 and the second iron core chip 21 are provided with inserts 7, which are inserted into the second groove 61. The inserts 7 are provided with a retaining part 71, which is embedded in the connecting hole 63. The retaining part 71 has an inclined surface 72 at the point where it enters the second groove 61. During the assembly of the two iron core assemblies, when the retaining part 71 initially enters the second groove 61, the downward pressure it applies is transmitted through the specific inclined surface 72. This action will push the inserts 7 towards the back wall of the second groove 61. At the same time, the entry of the retaining part 71 will also have a slight opening effect on the side wall of the second groove 61, creating space for subsequent smooth entry. This allows the retaining part 71 to work in conjunction with the insert 7 and be guided into the interior of the second groove 61. When the retaining part 71 moves to a position precisely aligned with the connecting hole 63, the squeezing force previously acting on the insert 7 and the side wall of the groove disappears. At this time, the insert 7 will reset due to its own elasticity or structural characteristics, and the second groove 61 will also return to its original state and no longer be in an open state. Finally, under the action of the disappearance of the squeezing force and the reset of the structure, the retaining part 71 is firmly embedded in the connecting hole 63, thereby reliably completing the connection operation between the two iron core groups, and the assembly can be completed without the need for other tools or fasteners.

[0032] It is worth mentioning that the distance between the insert 7 and the back wall of the second groove 61 is maintained to allow the anti-retraction part 71 and the insert 7 to enter the second groove 61.

[0033] It is worth mentioning that the snap-fit ​​setting is a stop part 71. The first iron core substrate 1 and the first iron core chip 11, and the second iron core substrate 2 and the second iron core chip 21 are stacked and connected to each other to form an iron core group. The snap-fit ​​connection structure facilitates the quick fixation of the first iron core group and the second iron core group, ensuring the neatness after assembly, simplifying the subsequent installation and fixing process, maintaining product consistency, and the setting of multiple snap-fits further enhances the connection stability and overall strength between the iron core groups. At the same time, this alignment and connection method also reduces the error caused by manual adjustment, helps to improve the accuracy of the overall stacking, and lays a good foundation for subsequent automated detection or processing steps, reducing material loss and potential safety risks during the assembly process.

[0034] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A transformer core capable of improving assembly efficiency, comprising a first core substrate (1) and a second core substrate (2), a plurality of first core pieces (11) are arranged in a stack on the upper side of the first core substrate (1), and a plurality of second core pieces (21) are arranged in a stack on the upper side of the second core substrate (2), characterized in that: The first iron core substrate (1) and the second iron core substrate (2) are provided with a plurality of equally spaced through holes (3). The first iron chip (11) and the second iron chip (21) are provided with protrusions (4) and embedded in the through holes (3). The back of the first iron chip (11) and the second iron chip (21) are provided with first grooves (5) for the adjacent protrusions (4) to be embedded. The first iron core substrate (1) and the second iron core substrate (2), and the first iron chip (11) and the second iron chip (21) are connected and fixed by snap fasteners.

2. The transformer core for improving assembly efficiency according to claim 1, characterized in that: The protrusion (4) has a chamfer (41) at the entry into the through hole (3) or the first groove (5), and the depth of the protrusion (4) embedded in the through hole (3) is less than the depth of the through hole (3).

3. The transformer core for improving assembly efficiency according to claim 1, characterized in that: The first iron core substrate (1) and the first iron chip (11) are provided with at least two connecting ends (6). The connecting ends (6) are provided with a second groove (61). The entrance of the second groove (61) is provided with inclined guide portions (62) on both sides. One end of the second groove (61) is provided with at least one connecting hole (63).

4. The transformer core for improving assembly efficiency according to claim 3, characterized in that: The second iron core substrate (2) and the second iron chip (21) are provided with inserts (7) and are inserted into the second groove (61). The inserts (7) are provided with a stop part (71) and are embedded in the connection hole (63). The stop part (71) has an inclined surface (72) at the point where it enters the second groove (61).

5. The transformer core for improving assembly efficiency according to claim 4, characterized in that: The back wall of the insert (7) and the second groove (61) maintains a distance between the anti-retraction part (71) and the insert (7) entering the second groove (61).

6. The transformer core for improving assembly efficiency according to claim 4, characterized in that: The latch is provided with a retraction stop (71).

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