SMD element structure

Abstract

The utility model discloses an SMD element structure, and relates to the SMD technology field, the SMD element structure comprises a housing, a winding skeleton, a magnetic core and PINs, the winding skeleton is used for winding a coil, the magnetic core is arranged at the outer side of the winding skeleton in a surrounding manner and is fixedly connected with the winding skeleton, the center position of the housing is provided with an assembling groove, and the PINs are arranged in the assembling groove. An assembling groove is formed in the shell, the winding framework and the magnetic core are both arranged in the assembling groove, the PIN is fixedly arranged on the surface of a shell body of the shell, and the PIN is connected with a leading-out wire of the winding framework; the PINs are arranged on the shell, so that soldering points can be concentrated in the area of the shell, compared with the mode that soldering points are positioned on a framework for soldering, the material and surface treatment of the shell are generally more suitable for soldering operation, and therefore the adhesiveness and uniformity of soldering are effectively improved, and the design of the shell and the PINs is standardized; the production process is easier to realize automation and large-scale production, and the production efficiency and the stability of product quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of SMD, and specifically relates to an SMD component structure. Background Art

[0002] In the development process of electronic components, SMD (Surface Mounted Devices) has been widely used due to its advantages such as small size, high performance, and convenient for automated production. In the early SMD designs, the magnetic core was often directly exposed, or the setting of PIN feet was not reasonable enough, which brought a series of problems to production and assembly.

[0003] In the traditional SMD structure, if there is no special outer shell set outside the magnetic core, the magnetic core is prone to be damaged during production, transportation, and assembly, affecting its performance and reliability. Moreover, when performing soldering operations on the PIN feet set on the skeleton, due to the material characteristics and surface conditions of the skeleton, the soldering is often uneven and not firm, and problems such as false soldering and short circuit are likely to occur, greatly increasing the difficulty of soldering and the defective rate.

[0004] In addition, without a unified and standardized position and method for setting PIN feet, it is difficult to achieve automated operation during the assembly process, requiring a large amount of manual intervention. This is not only inefficient but also prone to human errors, affecting the consistency of product quality.

[0005] Therefore, it is necessary to propose an improved technical solution to solve the above problems. Content of the Utility Model

[0006] The utility model aims to provide a technical solution that can solve the above problems to overcome the above deficiencies.

[0007] An SMD component structure includes an outer shell, a winding skeleton, a magnetic core, and PIN feet. The winding skeleton is used for winding coils. The magnetic core is arranged outside the winding skeleton and fixedly connected to the winding skeleton. An assembly groove is opened at the central position of the outer shell, and the winding skeleton and the magnetic core are both placed in this assembly groove. Among them, the PIN feet are fixedly arranged on the surface of the shell of the outer shell, and the PIN feet are connected to the lead-out wires of the winding skeleton.

[0008] As a further scheme of the utility model: a spacing groove is formed between the outer wall of the magnetic core and the inner wall of the assembly groove, and an adhesive layer is arranged in the spacing groove to fixedly connect the magnetic core and the outer shell through the adhesive layer.

[0009] As a further scheme of the utility model: at least part of the adhesive layer is bonded in the spacing groove, and a heat dissipation channel is formed between the spacing groove and the adhesive layer.

[0010] As a further solution of the present utility model: The magnetic core is disposed around the outer central position of the winding skeleton, so that a stepped groove surrounding the winding skeleton is formed below the magnetic core, and the stepped groove is communicated with the spaced groove.

[0011] As a further solution of the present utility model: The surface height of the magnetic core is lower than the surface height of the outer shell and the surface height of the winding skeleton.

[0012] As a further solution of the present utility model: The magnetic core is annular or E-shaped, and the magnetic core is made of ferrite or other magnetic materials.

[0013] As a further solution of the present utility model: The PIN pins are vertically fixed on the surface of the housing of the outer shell.

[0014] As a further solution of the present utility model: The outer shell is provided with a positioning structure acting on the winding skeleton.

[0015] As a further solution of the present utility model: The winding skeleton is made of a high-temperature resistant insulating material, and the winding skeleton has a preset wire groove structure.

[0016] As a further solution of the present utility model: The outer shell is made of a high-temperature resistant insulating material.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1) Through the setting of the outer shell, the outer shell can provide a stable physical structure for the magnetic core and the winding skeleton, preventing damage from external forces during assembly and operation;

[0019] 2) By arranging the PIN pins on the outer shell, the solder joints can be concentrated in the outer shell area. Compared with soldering on the skeleton, the material and surface treatment of the outer shell are usually more suitable for soldering operations, thus effectively improving the adhesion and uniformity of soldering; at the same time, the PIN pins are fixed on the outer shell, determining a clear and unified welding position and height, which helps the machine to accurately grasp and position the components during the automated assembly process, ensuring the accuracy and consistency of welding;

[0020] 3) The standardized design of the outer shell and PIN pins makes the production process easier to achieve automation and scale, improving the production efficiency and the stability of product quality;

[0021] 4) During the welding process, the outer shell can block the heat transfer to the magnetic core and the winding skeleton to a certain extent, reducing the possibility of component performance damage caused by overheating;

[0022] 5) The combination of the outer shell and the PIN pins enhances the mechanical strength of the entire component, and problems such as pin deformation or breakage are not likely to occur during the assembly process.

[0023] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0026] Figure 2 is a top-view structural schematic diagram of the present utility model;

[0027] Figure 3 is a front-view structural schematic diagram of the present utility model;

[0028] Figure 4 is along Figure 3 the cross-sectional structural schematic diagram in the A-A direction in

[0029] The reference numerals and names in the drawings are as follows:

[0030] 1, housing; 2, winding skeleton; 3, magnetic core; 4, PIN foot; 5, assembly groove; 6, spacer groove; 7, adhesive layer; 8, heat dissipation channel; 9, step groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0032] Please refer to Figures 1-4 , in the embodiment of the present utility model, an SMD component structure includes a housing 1, a winding skeleton 2, a magnetic core 3, and a PIN foot 4. The winding skeleton 2 is used for winding a coil. The magnetic core 3 is disposed outside the winding skeleton 2 and fixedly connected to the winding skeleton 2. An assembly groove 5 is provided at the central position of the housing 1. The winding skeleton 2 and the magnetic core 3 are both placed in the assembly groove 5. Among them, the PIN foot 4 is fixedly provided on the surface of the housing 1 of the housing, and the PIN foot 4 is connected to the lead-out wire of the winding skeleton 2.

[0033] In the technical solution of the present utility model, through the setting of the outer shell 1, the outer shell 1 can provide a stable physical structure for the magnetic core 3 and the winding skeleton 2, preventing external force damage during assembly and operation; by setting the PIN pins 4 on the outer shell 1, the solder joints can be concentrated in the area of the outer shell 1. Compared with soldering on the skeleton, the material and surface treatment of the outer shell 1 are usually more suitable for soldering operations, thus effectively improving the adhesion and uniformity of soldering; at the same time, the PIN pins 4 are fixed on the outer shell 1, determining a clear and unified welding position and height, which helps the machine to accurately grasp and position components during the automated assembly process, ensuring the accuracy and consistency of welding; the standardized design of the outer shell 1 and the PIN pins 4 makes the production process easier to achieve automation and scale, improving the production efficiency and the stability of product quality; during the welding process, the outer shell 1 can block the heat transfer to the magnetic core 3 and the winding skeleton 2 to a certain extent, reducing the possibility of component performance damage caused by overheating; the combination of the outer shell 1 and the PIN pins 4 enhances the mechanical strength of the entire component, and problems such as pin deformation or breakage are not likely to occur during the assembly process.

[0034] In the embodiment of the present utility model, a spacing groove 6 is formed between the outer wall of the magnetic core 3 and the inner wall of the assembly groove 5, and an adhesive layer 7 is arranged in the spacing groove 6 to fixedly connect the magnetic core 3 and the outer shell 1 through the adhesive layer 7.

[0035] After the whole of the magnetic core 3 and the winding skeleton 2 is built into the assembly groove 5, there is a certain gap (i.e., the spacing groove 6) between this whole and the inner wall of the outer shell 1. Thus, by adopting conventional technical means and through the bonding method (i.e., the adhesive layer 7), the outer shell 1 can be bonded to this whole to form an integral body, facilitating subsequent processing operations.

[0036] In the embodiment of the present utility model, at least part of the adhesive layer 7 is bonded in the spacing groove 6, and a heat dissipation channel 8 is formed between the spacing groove 6 and the adhesive layer 7.

[0037] On the basis of ensuring firm bonding, the adhesive layer 7 does not need to completely cover the spacing groove 6, only needs to partially cover the spacing groove 6, so that a heat dissipation channel 8 can be formed inside the spacing groove 6 and outside the adhesive layer 7, which is beneficial to the heat dissipation of the magnetic core 3 and the winding skeleton 2 during operation, and thus beneficial to the service life of the SMD component structure.

[0038] In the embodiment of the present utility model, the magnetic core 3 surrounds the outer side central position of the winding skeleton 2, so that a step groove 9 surrounding the winding skeleton 2 is formed below the magnetic core 3, and the step groove 9 is communicated with the spacing groove 6.

[0039] On the basis of ensuring the performance of this SMD component structure product, through the setting of the stepped groove 9, the effective space of the heat dissipation channel 8 is effectively increased. The setting of the outer shell 1 not only plays a role in fixing the PIN feet 4, thus facilitating assembly and operation, solving the problem of difficult soldering, meeting the needs of customers, but also meeting the operability of production, and also playing an effect of facilitating heat dissipation during work.

[0040] In the embodiment of the present utility model, the surface height of the magnetic core 3 is lower than the surface height of the outer shell 1 and the surface height of the winding skeleton 2.

[0041] Through this setting, the connection between the PIN feet 4 and the lead-out wires of the winding skeleton 2 will not be hindered.

[0042] In the embodiment of the present utility model, the magnetic core 3 is annular or E-shaped, and the magnetic core 3 is made of ferrite or other magnetic materials.

[0043] In the embodiment of the present utility model, the PIN feet 4 are vertically fixed on the surface of the shell body of the outer shell 1.

[0044] Through the vertical setting, the convenience of soldering is effectively improved, and the adhesion and uniformity of soldering tin are improved.

[0045] In the embodiment of the present utility model, the outer shell 1 is provided with a positioning structure acting on the winding skeleton 2.

[0046] The positioning structure can be a slot at the bottom of the assembly groove 5 of the outer shell 1, so that the whole of the magnetic core 3 and the winding skeleton 2 can be accurately positioned in the assembly groove 5, thus facilitating the stability of the product quality.

[0047] In the embodiment of the present utility model, the winding skeleton 2 is made of a high-temperature resistant insulating material, and the winding skeleton 2 has a preset wire groove structure.

[0048] The design of the preset wire groove structure facilitates the winding of the coil and ensures the performance of this SMD component structure product.

[0049] In the embodiment of the present utility model, the outer shell 1 is made of a high-temperature resistant insulating material.

[0050] It can be made of plastic, epoxy resin or other materials.

[0051] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model.

Claims

1. A SMD component structure, characterized in that: It includes a shell, a winding frame, a magnetic core and a PIN pin, wherein the winding frame is used to wind the coil, the magnetic core is arranged around the outside of the winding frame and is fixedly connected to the winding frame, an assembly groove is opened at the center of the shell, the winding frame and the magnetic core are both placed in the assembly groove, wherein the PIN pin is fixedly arranged on the shell surface of the shell, and the PIN pin is connected to the lead wire of the winding frame.

2. A SMD component structure according to claim 1, characterized in that: The outer wall of the magnetic core and the inner wall of the assembly groove form a spacing groove, and an adhesive layer is arranged in the spacing groove to fix the magnetic core and the shell through the adhesive layer.

3. A SMD component structure according to claim 2, characterized in that: The adhesive layer is at least partially bonded in the spacing groove, and a heat dissipation channel is formed between the spacing groove and the adhesive layer.

4. The SMD component structure according to claim 3, characterized in that: The magnetic core is arranged at the central position of the outer side of the winding frame, so that a step groove surrounding the winding frame is formed below the magnetic core, and the step groove is connected with the spacing groove.

5. The SMD component structure according to claim 1, characterized in that: The surface height of the magnetic core is lower than the surface height of the shell and the surface height of the winding frame.

6. The SMD component structure according to claim 1, characterized in that: The magnetic core is annular or E-shaped, wherein the magnetic core is made of ferrite or other magnetic materials.

7. The SMD component structure according to claim 1, characterized in that: The PIN pins are vertically fixed on the shell surface of the housing.

8. The SMD component structure according to claim 1, characterized in that: The housing is provided with a positioning structure acting on the winding frame.

9. The SMD component structure according to claim 1, characterized in that: The winding frame is made of high temperature resistant insulating material and has a preset wire slot structure.

10. The SMD component structure according to claim 1, characterized in that: The shell is made of high temperature resistant insulating material.

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