A combined fixture for constant acceleration test
By designing magnetic adsorption fixtures suitable for different product types, the problem of insufficient applicability of existing fixtures has been solved, achieving the effects of reducing costs and improving testing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 上海华岭申瓷集成电路有限责任公司
- Filing Date
- 2025-05-21
- Publication Date
- 2026-06-09
AI Technical Summary
Existing constant acceleration test fixtures are not suitable for different types of products, especially large-volume metal-packaged hybrid integrated circuits, resulting in high costs and a large workload for testing.
A combined fixture comprising a base, chip slot, separator buffer, and magnetic adsorption fastener is designed. The magnetic adsorption fastener and ferromagnetic base enable applicability to multiple product types, while the soft magnetic strips provide separation, limiting, and buffering to prevent mechanical damage.
It achieves the universality of the fixture, reduces costs, improves testing efficiency, avoids mechanical damage, and is suitable for constant acceleration testing of different product types.
Smart Images
Figure CN224341566U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic component testing fixtures, and in particular to a combined fixture for constant acceleration testing. Background Technology
[0002] Constant acceleration testing is an essential environmental test for electronic components. It can reveal defects that vibration and shock tests cannot detect. Through this test, the performance and structural integrity of a product under actual constant acceleration conditions can be understood. It exposes packaging, internal metallization and lead systems, chip or substrate adhesion defects, and other structural weaknesses in integrated circuit test samples of semiconductor devices. Existing test fixtures are often designed for chips or components with specific packages, and are particularly unsuitable for some large metal-packaged hybrid integrated circuits. Fixtures with corresponding specifications need to be designed for different product types, which is costly and increases the workload of testing. Utility Model Content
[0003] In view of the above-mentioned shortcomings of the fixtures currently used for constant acceleration testing of electronic components, this utility model provides a combined fixture for constant acceleration testing, which can be applied to different product types and reduce the cost of use.
[0004] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:
[0005] A combined fixture for constant acceleration testing includes a base and a cover plate. The base has a chip slot. The chip slot is provided with several separating buffers to divide the chip slot into several chip placement units. Fixing clamps are provided on both sides of the chip slot. The fixing clamps are fixedly connected to the base through cover plate fixing members. The fixing clamps are provided with mounting holes. The cover plate fixing members are disposed in the mounting holes.
[0006] According to one aspect of this utility model, the cover plate fixing member is a magnetic adsorption member; the base is made of ferromagnetic material.
[0007] According to one aspect of the present invention, the upper surface of the magnetic adsorption element is flush with the upper surface of the fixing clamp.
[0008] According to one aspect of the present invention, a guide port is provided on one side of the chip slot.
[0009] According to one aspect of this utility model, the separating buffer is a soft magnetic strip.
[0010] Advantages of this utility model:
[0011] Using magnetic adsorption for fixation, the components to be tested are separated and limited in the chip slot by soft magnetic strips of appropriate thickness and width, which can avoid unnecessary mechanical damage. The fixing fixture and cover are fixed by magnetic adsorption components, making disassembly and assembly more convenient. It can be applied to different product types, eliminating the need for frequent design of special fixture processes, improving test efficiency, and the overall structure is simple, which can effectively reduce costs. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the appearance of a combined fixture for constant acceleration testing according to the present invention.
[0014] Illustration: 1. Base; 11. Chip slot; 12. Separator buffer; 13. Guide port; 2. Fixing clamp; 3. Cover plate fixing component. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not 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 effort are within the protection scope of the present utility model.
[0016] Example 1
[0017] like Figure 1 As shown, a combined fixture for constant acceleration testing includes a base 1 and a cover plate. The base 1 is provided with a chip slot 11. The chip slot 11 is provided with a plurality of separating buffers 12, which divide the chip slot 11 into a plurality of chip placement units. Fixing clamps 2 are provided on both sides of the chip slot 11. The fixing clamps 2 are fixedly connected to the base 1 through cover plate fixing members 3. The fixing clamps 2 are provided with mounting holes. The cover plate fixing members 3 are disposed in the mounting holes.
[0018] In practical applications, the cover plate fixing component 3 adopts a magnetic adsorption component, while the base 1 is made of ferromagnetic material; at the same time, in order to reduce weight, the fixing clamp 2 can be made of lightweight aluminum alloy; and the cover plate can also be fixed by the magnetic adsorption component.
[0019] In this embodiment, a soft magnetic strip with appropriate thickness and width is used as the separating buffer 12. In use, the component chips are placed sequentially in the chip placement unit, with the soft magnetic strip placed between the chips. The soft magnetic strip has magnetism and can be attracted into the chip slot 11, limiting and fixing the component to be tested, and also providing a certain buffer to avoid unnecessary mechanical damage. Regardless of whether the pins of the chip to be tested are perpendicular or parallel to the stress direction, the test stress will not cause it to bend. At the same time, the soft magnetic strip is flexible and easy to process into various sizes and specifications, which can be easily adjusted according to different product types, especially suitable for some large-volume metal-packaged hybrid integrated circuits.
[0020] Example 2
[0021] like Figure 1 As shown, a combined fixture for constant acceleration testing includes a base 1 and a cover plate. The base 1 is provided with a chip slot 11. The chip slot 11 is provided with a plurality of separating buffers 12, which divide the chip slot 11 into a plurality of chip placement units. Fixing clamps 2 are provided on both sides of the chip slot 11. The fixing clamps 2 are fixedly connected to the base 1 through cover plate fixing members 3. The fixing clamps 2 are provided with mounting holes. The cover plate fixing members 3 are disposed in the mounting holes.
[0022] In practical applications, the cover plate fixing component 3 adopts a magnetic adsorption component, while the base 1 is made of ferromagnetic material; at the same time, in order to reduce weight, the fixing clamp 2 can be made of lightweight aluminum alloy; and the cover plate can also be fixed by the magnetic adsorption component.
[0023] In this embodiment, a soft magnetic strip with appropriate thickness and width is used as the separating buffer 12. In use, the component chips are placed sequentially in the chip placement unit, with the soft magnetic strip placed between the chips. The soft magnetic strip has magnetism and can be attracted into the chip slot 11, limiting and fixing the component to be tested, and also providing a certain buffer to avoid unnecessary mechanical damage. Regardless of whether the pins of the chip to be tested are perpendicular or parallel to the stress direction, the test stress will not cause it to bend. At the same time, the soft magnetic strip is flexible and easy to process into various sizes and specifications, which can be easily adjusted according to different product types, especially suitable for some large-volume metal-packaged hybrid integrated circuits.
[0024] Preferably, the upper surface of the magnetic adsorption component is flush with the upper surface of the fixing clamp 2 to ensure a flat contact surface. When adsorbing the cover plate, the magnetic adsorption component and the cover plate can make full contact to ensure the adsorption and fixing effect.
[0025] Optionally, to facilitate the placement of components, a guide port 13 is provided on one side of the chip slot 11. The component to be tested enters through the guide port 13, which serves to guide and limit the component.
[0026] Advantages of this utility model:
[0027] Using magnetic adsorption for fixation, the components to be tested are separated and limited in the chip slot by soft magnetic strips of appropriate thickness and width, which can avoid unnecessary mechanical damage. The fixing fixture and cover are fixed by magnetic adsorption components, making disassembly and assembly more convenient. It can be applied to different product types, eliminating the need for frequent design of special fixture processes, improving test efficiency, and the overall structure is simple, which can effectively reduce costs.
[0028] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A combined fixture for a constant acceleration test, comprising a base (1) and a cover plate, characterized in that, The base (1) is provided with a chip slot (11); the chip slot (11) is provided with a plurality of partition buffers (12) to divide the chip slot (11) into a plurality of chip placement units; the chip slot (11) is provided with fixing clamps (2) on both sides; the fixing clamps (2) are fixedly connected to the base (1) through cover plate fixing members (3); the fixing clamps (2) are provided with mounting holes; the cover plate fixing members (3) are provided in the mounting holes.
2. The combined fixture for constant acceleration testing according to claim 1, characterized in that, The cover plate fixing component (3) is a magnetic adsorption component; the base (1) is made of ferromagnetic material.
3. The combined fixture for constant acceleration testing according to claim 2, characterized in that, The upper surface of the magnetic adsorption component is flush with the upper surface of the fixing clamp (2).
4. The combined fixture for constant acceleration testing according to claim 1, characterized in that, A guide port (13) is provided on one side of the chip slot (11).
5. The combined fixture for constant acceleration testing according to claim 1, characterized in that, The separating buffer (12) is a soft magnetic strip.