Anti-fracture impact-resistant contactor locking mechanism

Abstract

The invention discloses an anti-fracture impact-resistant contactor locking mechanism, and the mechanism comprises two rounded surface hooks which are respectively disposed at two sides of the inner wall of the bottom of a contactor housing. The two elastic hooks are respectively arranged on two sides of the inner wall of the top of the contactor base and can be correspondingly hooked with the two rounded surface hooks, so that the contactor shell and the contactor base can be tightly connected into a whole; the elastic hook comprises a top hook-shaped structure and a bottom hook-shaped structure, the middle plate-shaped structure is vertically arranged at the lower part of the top structure; and the bottom structure is arranged at the bottom of the middle plate-shaped structure. The contactor can still work continuously without being influenced by external factors in an impact vibration environment in an external environment movement process, and has the functions of resisting external force impact vibration and ensuring that the contactor cannot be unhooked and broken, the whole contactor falls apart and the like.

Description

Technical Field

[0001] The present invention relates to the field of electrical technology, and in particular to a contactor locking mechanism that is anti-fracture and anti-impact. Background Art

[0002] Plastic products are currently indispensable in the low-voltage electrical appliance industry both domestically and internationally due to their excellent insulation and plasticity. However, their use in some specialized electrical environments is limited. In particular, they often experience disconnection and breakage in environments subject to strong external shock and vibration, leading to poor reliability. Currently, plastic products are primarily designed for operation in static environments free from external shock and vibration. They are unable to withstand environments susceptible to strong external shock and vibration, or sudden shock and vibration (such as those caused by earthquakes, tsunamis, hurricanes, and other natural events). Consequently, the application of plastic products is significantly limited.

[0003] Domestic low-current plastic products mostly use screws or hooks to secure the parts together. When these plastic products are in motion or subjected to external shock and vibration, they often break and disengage at the fixing points, causing the product to crack and become inoperable, not to mention poor maintainability. Furthermore, the use of metal screws to secure plastic products significantly reduces their dielectric performance and overall insulation performance in the electrical field, creating operational safety risks that are difficult to detect and eliminate.

[0004] To this end, it is necessary to design a fracture-resistant and impact-resistant contactor locking mechanism that is fixed between plastic product bodies and can withstand strong external impact and vibration while the plastic product can still operate normally and reliably under external environment operation conditions. Summary of the Invention

[0005] In response to the above technical problems, the present invention provides a contactor locking mechanism that is anti-fracture and anti-impact.

[0006] In order to achieve the above object, the technical solution of the present invention is as follows: A fracture-proof and impact-resistant contactor locking mechanism, comprising: Two rounded hooks are respectively arranged on both sides of the bottom inner wall of the contactor housing; Two elastic hooks are respectively provided on both sides of the top inner wall of the contactor base, and can be hooked with the two rounded hooks, so that the contactor housing and the contactor base can be tightly connected to each other as a whole; Among them, the elastic hook includes: Top hook structure; The middle plate-like structure is vertically arranged at the lower part of the top structure; A bottom structure, arranged at the bottom of the middle plate-like structure; Among them, the connection between the top hook structure and the middle plate structure is an anti-fracture hook rounded corner surface, and its rounded corner is a semicircular arc of R0.3~R0.5; the inner wall of the middle plate structure is a self-resetting elastic arc surface, and its arc angle is R5~R7; the connection between the middle plate structure and the bottom structure is a self-resetting elastic rounded corner surface, and the arc angle is a semicircular arc of R0.7~R0.9; the top hook structure, the middle plate structure and the rear side wall of the bottom structure form a strong rebound arc surface, and the arc angle of the strong rebound arc surface is R50~R60.

[0007] When the rounded corner hook is hooked with the elastic hook, the rounded corner of the arc surface on the rounded corner hook corresponding to the rounded corner surface of the anti-fracture hook is R0.3 to R0.4.

[0008] The beneficial effects of the present invention are: 1. This invention is suitable for fastening plastic contactor parts together, and is particularly well-suited for specialized industries requiring shock and vibration resistance, significantly expanding the application of plastic contactors. This eliminates issues such as leakage and poor insulation performance associated with external metal contactors in low-voltage electrical applications requiring shock and vibration resistance. It also improves the product's insulation and maintainability, ensuring operator safety.

[0009] 2. In the present invention, the rounded corner hook is designed with a rounded corner of R0.3 to R0.4. This rounded corner design is mainly used to disperse the internal stress in the plastic product. When subjected to strong external impact and vibration, the rounded corner hook in the contactor housing will not be damaged due to the concentration of stress in the plastic product.

[0010] 3. In the present invention, the elastic hook is designed with an anti-break hook rounded surface and a reset elastic arc surface. The anti-break hook rounded surface can effectively prevent the hook from breaking under the conditions of external force impact and vibration, thereby achieving the maintainability of the plastic product itself. Under the action of the reset elastic arc surface, the hook can be effectively prevented from being disengaged. At the same time, a self-resetting elastic rounded surface and a strong rebound arc surface are designed on the inner side of the elastic hook. Through this design, the elastic hook of the plastic product can effectively self-reset when subjected to strong external force impact and vibration, ensuring that the product is not easy to be unhooked and broken, and can operate safely, accurately and reliably. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a perspective view of the present invention.

[0012] Figure 2 It is a structural schematic diagram of the contactor housing of the present invention.

[0013] Figure 3 It is a structural schematic diagram of the contactor base of the present invention.

[0014] Figure 4 It is a structural schematic diagram of the elastic hook of the present invention.

[0015] Figure 5 It is a side view of the elastic hook of the present invention.

[0016] Among them: 1-contactor housing, 101-rounded hook, 2-contactor base, 201 elastic hook, 201-1-elastic hook anti-breakage hook rounded surface, 201-2-elastic hook reset elastic arc surface, 201-3-elastic hook self-reset elastic rounded surface, 201-4-elastic hook strong rebound arc surface. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concept of the present invention.

[0018] like Figures 1 to 5As shown, an anti-fracture and impact-resistant contactor locking mechanism includes: two rounded hooks 101, which are respectively arranged on both sides of the bottom inner wall of the contactor housing 1; two elastic hooks 201, which are respectively arranged on both sides of the top inner wall of the contactor base 2, and can be hung with the two rounded hooks 101 corresponding to each other, so that the contactor housing 1 and the contactor base 2 can be tightly connected to each other as a whole; wherein the elastic hook 201 includes: a top hook structure; an intermediate plate structure, which is vertically arranged at the lower part of the top structure; and a bottom structure, which is arranged at the bottom of the intermediate plate structure; wherein the connection between the top hook structure and the intermediate plate structure is an anti-fracture hook rounded surface 201-1, and its rounded corner is a semicircular arc shape of R0.3 to R0.5; the inner wall of the intermediate plate structure is a self-resetting elastic arc surface 201-2, and its arc angle is R5 to R7; the intermediate plate structure and the bottom The connection point of the upper structure is a self-resetting elastic fillet surface 201-3, and the arc angle is a semicircular arc of R0.7~R0.9; the top hook structure, the middle plate structure and the rear side wall of the bottom structure form a strong rebound arc surface 201-4, and the arc angle of the strong rebound arc surface 201-4 is R50~R60. When the fillet surface hook 101 is hung with the elastic hook 201, the fillet of the arc surface on the fillet surface hook 101 corresponding to the anti-fracture hook fillet surface 201-1 is R0.3~R0.4 (Note: The fillet angle is between R0.3 and R0.4 as concluded by multiple impact and vibration standard tests. If the fillet angle is too large, the hook surface locking requirement cannot be met. If the fillet angle is too small, after the hook surface is locked, the internal stress is not concentrated when subjected to external impact and vibration, which will still cause damage to the fillet surface hook 101 in the contactor housing 1).

[0019] When the present invention is in use, the two elastic hooks 201 and the two rounded hooks 101 are pressed downwards. Due to the characteristics of the elastic material, the two can be correspondingly hooked, so that the contactor housing 1 and the contactor base 2 can be tightly connected to each other as a whole.

[0020] In the present invention, the fillet angle of the rounded hook 101 in the contactor housing 1 has been determined to be between R0.3 and R0.4 through multiple standard impact and vibration tests. If the fillet angle is too large, the hook surface will not lock properly. If the fillet angle is too small, even after the hook surface is locked, the lack of internal stress when subjected to external impact and vibration may still cause damage to the rounded hook 101 in the contactor housing 1. Therefore, the fillet angle of the rounded hook 101 in the contactor housing 1 is designed to be between R0.3 and R0.4. This prevents the rounded hook 101 from becoming unhooked, broken, or damaged after being subjected to impact and vibration.

[0021] See also Figures 3 to 5As shown: the elastic hook 201 in the contactor base 2 includes an anti-fracture hook rounded corner surface 201-1, a reset elastic arc surface 201-2, a self-reset elastic rounded corner surface 201-3 and a strong rebound arc surface 201-4. The inner side of the elastic hook 201 in the contactor base 2 is respectively designed with an anti-fracture hook rounded corner surface 201-1, and its rounded corner is R0.3~R0.5 semi-circular arc (Note: The impact vibration standard test proves that the rounded corner of the anti-fracture hook rounded corner surface 201-1 is R0.3~R0.5 semi-circular arc, semi-circular If the arc is too large, it will not provide a locking effect; if the semi-circular arc is too small, it will not eliminate the internal stress of the anti-fracture hook during impact and vibration, which may cause the hook to break. The reset elastic arc surface 201-2 requires an arc angle between R5 and R7 to transition. (Note: Impact and vibration standard tests have proven that the reset elastic arc surface 201-2 requires an arc angle between R5 and R7 to achieve the self-resetting elastic effect. If the arc angle is too small, it is easy to break, and if the arc angle is too large, it will not achieve the self-resetting elastic effect.) The anti-fracture hook rounded surface 201-1 can effectively prevent the hook from breaking under external impact and vibration conditions, achieving the maintainability of the plastic product itself. Under the action of the reset elastic arc surface 201-2, the hook can be effectively prevented from being disengaged. At the same time, a self-resetting elastic fillet surface 201-3 is designed on the inner side of the elastic hook 201 in the contactor base 2. The arc angle of the self-resetting elastic fillet surface 201-3 is R0.7~R0.9 semi-circular arc (Note: The impact vibration standard test proves that the arc angle of the self-resetting elastic fillet surface 201-3 is R0.7~R0.9 semi-circular arc, which plays an auxiliary role in strengthening the reset elastic arc surface 201-2 during the entire impact vibration test). The elastic arc surface 201-2 is used to reset the hook, while the reinforced rebound arc surface 201-4 is used to stabilize and strengthen the overall hook shape with an arc angle of R50 to R60 (Note: The impact vibration standard test proves that the reinforced rebound arc surface 201-4 is used to stabilize and strengthen the overall hook shape with an arc angle of R50 to R60. If the arc angle of the reinforced rebound arc surface 201-4 is too small, it will not stabilize the overall hook shape. If the arc angle of the reinforced rebound arc surface 201-4 is too large, the internal stress of the overall hook shape will be too concentrated, and the overall hook will be prone to breakage under impact and vibration conditions). The above design effectively enables the elastic hook of the plastic product contactor to effectively reset and lock when subjected to strong external impact and vibration forces, ensuring that the plastic product product is not easily unhooked or broken.

[0022] The present invention has been verified through multiple tests. The test standard is: a 180kg sledgehammer is used to perform a free-fall impact vibration test at a height of 2 meters from the test product according to a quarter circle. The bottom impact plate of the vertically mounted plastic product contactor and the impact plates on both sides of the plastic product contactor are each subjected to 5 impact tests. After the test, the plastic product contactor is powered on to see if it can continue to work normally and to check whether the plastic product contactor is intact. The test verified that the present invention is more suitable for some special industry fields with impact and vibration resistance requirements, thus greatly expanding the application field of plastic products. In some low-voltage electrical appliances with impact and vibration resistance requirements, the application of external metal parts fixing is eliminated, thereby improving the insulation and maintainability of the product itself and ensuring the safety of personnel operation.

[0023] It should be understood that the above-described specific embodiments of the present invention are merely illustrative or illustrative of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included within the scope of protection of the present invention. In addition, the appended claims are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.

Claims

1. A fracture-proof and impact-resistant contactor locking mechanism, characterized in that: include: Two rounded hooks (101) are respectively arranged on both sides of the bottom inner wall of the contactor housing (1); Two elastic hooks (201) are respectively arranged on both sides of the top inner wall of the contactor base (2), and can be correspondingly hooked with the two rounded surface hooks (101), so that the contactor housing (1) and the contactor base (2) can be tightly connected to each other as a whole; The elastic hook (201) comprises: Top hook structure; The middle plate-like structure is vertically arranged at the lower part of the top structure; A bottom structure, arranged at the bottom of the middle plate-like structure; The connection between the top hook-shaped structure and the middle plate-shaped structure is a fracture-proof hook fillet surface (201-1), and the fillet is a semicircular arc of R0.3 to R0.5; the inner wall of the middle plate-shaped structure is a self-resetting elastic arc surface (201-2), and the arc angle is R5 to R7; the connection between the middle plate-shaped structure and the bottom structure is a self-resetting elastic fillet surface (201-3), and the arc angle is a semicircular arc of R0.7 to R0.9; the top hook-shaped structure, the middle plate-shaped structure and the rear side wall of the bottom structure form a strong rebound arc surface (201-4), and the arc angle of the strong rebound arc surface (201-4) is R50 to R60.

2. The anti-fracture and anti-impact contactor locking mechanism according to claim 1, characterized in that: When the rounded-angle hook (101) and the elastic hook (201) are hooked to each other, the rounded angle of the arc surface on the rounded-angle hook (101) corresponding to the anti-fracture hook rounded angle surface (201-1) is R0.3-R0.4.

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