Cement resistor structure suitable for automated assembly

Abstract

The utility model relates to the technical field of resistance element, especially to a cement resistance structure suitable for automatic assembly, which comprises a ceramic shell, a resistance core, a conductive sheet and an insulating material. The ceramic shell is provided with a partition groove inside to optimize heat dissipation and insulation performance. The conductive sheet comprises a connecting section, a supporting section and a welding section, which are used to fix and support the ceramic shell through the embedded groove. The utility model has the beneficial effect that the technical scheme sets the partition groove in the ceramic shell, separates the resistance core, significantly improves the electrical insulation performance, optimizes the heat dissipation effect, maintains the uniform spacing and forms the efficient heat dissipation path, thereby significantly improving the heat dissipation performance.

Description

Technical Field

[0001] This utility model relates to the field of resistor technology, and in particular to a cement resistor structure suitable for automated assembly. Background Technology

[0002] With the development of the electronic components field, cement resistors, as a common resistive element, are widely used in various circuits. However, in actual production and assembly processes, existing cement resistor designs still have some problems, especially in automated assembly scenarios, where their structural design struggles to meet the demands for efficient and precise assembly. For example, traditional cement resistors are typically assembled manually or semi-automatically, resulting in low production efficiency and errors easily caused by manual operation. Furthermore, some existing designs fail to adequately consider shock resistance and stability in their pin structures and packaging, making them prone to pin breakage or poor contact due to vibration or mechanical stress.

[0003] Existing technology, patent document CN112382452B, discloses a stainless steel resistor with edge-sealing fixation, published on 2024-04-30. This design uses U-shaped mica paper and a U-shaped fixing plate to fix the resistor sheet, thereby improving assembly stability and vibration resistance. However, this design is mainly aimed at high-current applications, and its large size and complex structure make it unsuitable for high-density automated assembly requirements.

[0004] Therefore, it is necessary to design a cement resistor structure suitable for automated assembly to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a cement resistance structure suitable for automated assembly, so as to overcome the above-mentioned shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A cement resistor structure suitable for automated assembly, comprising: The ceramic outer shell has several sets of partition grooves inside, with one set of partition grooves between every two adjacent resistor cores; Several sets of resistor cores are placed inside a ceramic shell and separated by partition grooves; Conductive sheets are respectively disposed at both ends of the ceramic shell. The conductive sheets include a connecting section, a supporting section and a welding section. The connecting section has a T-shaped structure and is inserted into the grooves opened at both ends of the ceramic shell. The supporting section is perpendicular to the side of the ceramic shell and its length exceeds the height of the ceramic shell. The welding section is perpendicular to the supporting section and parallel to the horizontal plane of the ceramic shell. Insulating material is filled inside the ceramic shell.

[0007] Preferably, the depth of the partition groove is between one-third and one-half of the height of the ceramic shell, the width is between one-fifth and one-quarter of the diameter of the resistor core, and the bottom of the partition groove is provided with an arc-shaped transition surface.

[0008] Preferably, the insulating material is epoxy resin, and the filling amount is between 80% and 90% of the internal space of the ceramic shell.

[0009] Preferably, clearance grooves are provided on the outer walls at both ends of the ceramic shell. The opening width of the clearance groove is between one-fifth and one-quarter of the width of the ceramic shell, and the depth is between one-quarter and one-third of the height of the ceramic shell. The inner wall of the clearance groove is provided with a chamfer, and the chamfer angle is between forty-five degrees and sixty degrees.

[0010] Preferably, the outer surface of the support section of the conductive sheet has a plurality of strip grooves distributed along its length, and the depth of the strip grooves is between one-tenth and one-eighth of the thickness of the support section.

[0011] Preferably, the surface of the welding section of the conductive sheet is provided with a tin plating layer.

[0012] Preferably, the ceramic shell has grooves at both ends for mounting conductive sheets, and the connecting section is fitted into the grooves for positioning and fixation.

[0013] The beneficial effects of this utility model are: the technical solution sets a partition groove inside the ceramic shell to separate the resistor cores, which significantly improves the electrical insulation performance, optimizes the heat dissipation effect, maintains uniform spacing, and forms an efficient heat dissipation path, thereby significantly improving the heat dissipation performance. By designing the connecting section, support section, and welding section of the conductive sheet, stable support and efficient welding of the ceramic shell were achieved, avoiding deformation caused by excessive weight of the ceramic shell, and improving the reliability and stability of the welding. By creating clearance grooves and positioning grooves on the outer wall of the ceramic shell, and using the limit components of automated equipment for limiting and positioning, the precise position of welding is ensured, and assembly efficiency is improved. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a cement resistor structure suitable for automated assembly according to the present invention. Figure 2 This is a schematic diagram of the internal structure of a cement resistor structure suitable for automated assembly according to this utility model. Figure 3 This is a partial schematic diagram of a cement resistor structure suitable for automated assembly according to the present invention; In the diagram: 1. Ceramic shell; 2. Divider groove; 21. Resistor core; 3. Conductive sheet; 4. Clearance groove; 5. Connecting section; 6. Support section; 7. Welding section; 8. Positioning groove; 9. Positioning hole; 10. Insulating material. Detailed Implementation

[0015] Reference Figures 1 to 3 A cement resistance structure suitable for automated assembly, comprising: The ceramic shell 1 has several sets of partition grooves 2 inside. Each set of partition grooves 2 is set between two adjacent resistor cores. The depth of the partition groove 2 is between one-third and one-half of the height of the ceramic shell 1, and the width is between one-fifth and one-quarter of the diameter of the resistor core. The bottom of the partition groove 2 is provided with an arc-shaped transition surface. Several sets of resistor cores 21 are placed inside the ceramic housing 1 and separated by partition grooves 2; Conductive sheets 3 are respectively disposed at both ends of the ceramic shell 1. The conductive sheet 3 includes a connecting section 5, a supporting section 6 and a welding section 7. The connecting section 5 has a T-shaped structure and is inserted into the grooves opened at both ends of the ceramic shell 1. The supporting section 6 is perpendicular to the side of the ceramic shell 1 and its length exceeds the height of the ceramic shell 1. The welding section 7 is perpendicular to the supporting section 6 and parallel to the horizontal plane of the ceramic shell 1. Insulating material 10 is filled inside the ceramic shell 1. The insulating material is epoxy resin, and the filling amount accounts for 80% to 90% of the internal space of the ceramic shell 1. The clearance groove 4 is formed on the outer wall of the front and rear ends of the ceramic shell 1. The opening width of the clearance groove 4 is between one-fifth and one-quarter of the width of the ceramic shell 1, and the depth is between one-quarter and one-third of the height of the ceramic shell 1. The inner wall of the clearance groove 4 is provided with a chamfer, and the chamfer angle is between forty-five degrees and sixty degrees. Positioning grooves 8 are formed at different positions of the ceramic shell 1. There are four positioning grooves 8, which are respectively set at the top, bottom and sides of the ceramic shell 1. The shape of the positioning grooves 8 is rectangular or circular, and the depth of the positioning grooves 8 is between one-third and one-half of the thickness of the ceramic shell 1.

[0016] The specific function of the dividing groove 2 is to ensure a uniform spacing between the resistor cores, thereby forming an efficient heat dissipation path and significantly improving electrical insulation performance.

[0017] The connecting segment 5 has a T-shaped structure with several protrusions at its ends. These protrusions are embedded in the surface of the resistor core, enhancing the connection strength and preventing poor contact due to vibration or mechanical stress. The connecting segment 5 is inserted into the grooves at both ends of the ceramic shell 1, achieving positioning and fixation through a snap-fit ​​method. The support segment 6 is perpendicular to the side of the ceramic shell 1, and its length exceeds the height of the ceramic shell 1, enabling it to support the entire ceramic shell 1. In other embodiments, the outer surface of the support segment 6 has several strip-shaped grooves distributed along its length, with the depth of the grooves ranging from one-tenth to one-eighth of the thickness of the support segment 6. The design of the strip-shaped grooves enhances the bending resistance of the support segment 6 while reducing the overall weight.

[0018] The welding section 7 is perpendicular to the support section 6 and parallel to the horizontal plane of the ceramic shell 1. The welding section 7 has a sheet-like structure with a tin-plated layer on its surface, the thickness of which is between 0.02 mm and 0.05 mm. The tin plating layer improves the conductivity and welding reliability of the welding section 7, while avoiding oxidation problems.

[0019] The outer walls at both ends of the ceramic shell 1 are provided with clearance grooves 4. The opening width of the clearance grooves 4 is between one-fifth and one-quarter of the width of the ceramic shell 1, and the depth is between one-quarter and one-third of the height of the ceramic shell 1. The inner wall of the clearance grooves 4 is provided with chamfers, and the chamfer angle is between 45° and 60°.

[0020] The ceramic housing 1 is also provided with several sets of positioning grooves 8 and positioning holes 9. There are four positioning grooves 8, which are respectively located on the top, bottom and sides of the ceramic housing 1. The design of the positioning grooves 8 and positioning holes 9 allows the ceramic housing 1 to be adapted to different types of automated assembly equipment, improving its versatility. In addition, the entire ceramic housing 1 has a square structure, which facilitates the picking up of automated equipment and enables assembly and welding through the surface of the vacuum adsorber.

[0021] This invention solves the problems of low efficiency, easy breakage of pins, and inability to meet the requirements of high-density automated assembly in existing technologies by optimizing the internal component layout, improving pin design, and enhancing shock resistance. Specifically, the design of the partition groove ensures uniform spacing between resistor cores, forming an efficient heat dissipation path; the connecting section of the conductive sheet makes close contact with the surface of the resistor core through protrusions, the support section enhances bending resistance through the design of strip grooves, and the welding section improves welding reliability through the design of a tin-plated layer; the design of the clearance groove and positioning groove ensures the limit and positioning accuracy of the automated equipment during the assembly process, thereby improving assembly efficiency.

[0022] The advantages of this utility model are that the technical solution sets a partition groove inside the ceramic shell to separate the resistor cores, which significantly improves the electrical insulation performance and optimizes the heat dissipation effect. Maintaining a uniform spacing forms an efficient heat dissipation path, thereby significantly improving the heat dissipation performance. By designing the connecting section, support section, and welding section of the conductive sheet, stable support and efficient welding of the ceramic shell were achieved, avoiding deformation caused by excessive weight of the ceramic shell, and improving the reliability and stability of the welding. By creating clearance grooves and positioning grooves on the outer wall of the ceramic shell, and using the limit components of automated equipment for limiting and positioning, the precise position of welding is ensured, and assembly efficiency is improved.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cement resistor structure suitable for automated assembly, characterized in that: It includes: The ceramic outer shell has several sets of partition grooves inside, with one set of partition grooves between every two adjacent resistor cores; Several sets of resistor cores are placed inside a ceramic shell and separated by partition grooves; Conductive sheets are respectively disposed at both ends of the ceramic shell. The conductive sheets include a connecting section, a supporting section and a welding section. The connecting section has a T-shaped structure and is inserted into the grooves opened at both ends of the ceramic shell. The supporting section is perpendicular to the side of the ceramic shell and its length exceeds the height of the ceramic shell. The welding section is perpendicular to the supporting section and parallel to the horizontal plane of the ceramic shell. Insulating material is filled inside the ceramic shell.

2. A cement resistor structure suitable for automated assembly according to claim 1, characterized in that: The depth of the partition groove is between one-third and one-half of the height of the ceramic shell, and the width is between one-fifth and one-quarter of the diameter of the resistor core. The bottom of the partition groove is provided with an arc-shaped transition surface.

3. A cement resistor structure suitable for automated assembly according to claim 1, characterized in that: The insulating material is epoxy resin, and its filling amount is between 80% and 90% of the internal space of the ceramic shell.

4. A cement resistor structure suitable for automated assembly according to claim 1, characterized in that: The outer walls at both ends of the ceramic shell are provided with clearance grooves. The opening width of the clearance groove is between one-fifth and one-quarter of the width of the ceramic shell, and the depth is between one-quarter and one-third of the height of the ceramic shell. The inner wall of the clearance groove is provided with a chamfer, and the chamfer angle is between forty-five degrees and sixty degrees.

5. A cement resistor structure suitable for automated assembly according to claim 1, characterized in that: The outer surface of the support section of the conductive sheet has several strip-shaped grooves distributed along its length, and the depth of the strip-shaped grooves is between one-tenth and one-eighth of the thickness of the support section.

6. A cement resistor structure suitable for automated assembly according to claim 1, characterized in that: The surface of the welding section of the conductive sheet is provided with a tin plating layer.

7. A cement resistor structure suitable for automated assembly according to claim 1, characterized in that: The ceramic shell has grooves at both ends for mounting conductive sheets, and the connecting section is inserted into the grooves for positioning and fixation.

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