Stainless steel pin and charger
By setting a matrix of recessed dots and a rubber-coated groove on the rod of the stainless steel insert body, the problem of rubber coating falling off during Australian standard testing of hardware pins is solved, achieving higher testing standards and usage safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-03-27
AI Technical Summary
Existing hardware pins are prone to problems such as adhesive peeling or cracking under the high requirements of Australian standards, making it difficult to meet the testing standards.
The body is made of stainless steel insert, with a matrix of recessed dots on the middle rod and grooves in the rubber coating area to enhance the gripping force between the rubber coating and the insert body. The rubber coating is formed by injection molding.
It improves the tightness of the connection between the overmolding and the insert body, meets increasingly stringent Australian testing standards, ensures that the insert does not fall off or crack during the roller test, and improves the yield rate and safety of use.
Smart Images
Figure CN224053445U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of electrical fittings especially relates to a stainless steel prong and charger. BACKGROUND
[0002] The charger on the market at present is used for fast charging of electric appliances, and the user experience is getting better and better. The greater the power of the product, the heavier the weight of the product. The weight of the charger product is more than 150 grams when the general power is more than 65W, which leads to higher requirements for the prong of the Australian standard.
[0003] The rubber coating needs to be set on the hardware prong of the Australian standard on the market at present to protect the prong and prolong its service life. However, with the improvement of the detection requirements of the prong of the Australian standard, the existing prong of the Australian standard will crack or even fall off under high requirement test conditions, which is difficult to meet the test standard. INVENTION CONTENTS
[0004] The stainless steel prong and charger provided by the utility model aim to solve the problem that the hardware prong in the prior art will fall off under the high requirement test conditions of the Australian standard.
[0005] In a first aspect, the utility model discloses a stainless steel prong, which comprises a plug body and a rubber coating.
[0006] In some embodiments, the plurality of concave points are arranged in a matrix.
[0007] In some embodiments, the number of concave points on the front surface of the middle rod is forty-five, and the concave points are arranged in nine rows and five columns. The concave points on the back surface of the middle rod are arranged one by one corresponding to the concave points on the front surface of the middle rod.
[0008] In some embodiments, the tail wing comprises a first main body segment and a first end portion, and the front rod comprises a second main body segment and a second end portion. One end of the first main body segment is fixedly connected to one end of the middle rod, the other end of the first main body segment is fixedly connected to the first end portion, one end of the second main body segment is fixedly connected to the other end of the middle rod, and the other end of the second main body segment is connected to the second end portion. The thickness of the middle rod is less than the thickness of the first main body segment and the second main body segment.
[0009] In some embodiments, the thickness of the middle rod is 1-1.1 mm, the thickness of the first body section and the second body section is 1.68-1.72 mm, and the depth of the concave points is 0.05-0.15 mm.
[0010] In some embodiments, the first body section comprises a second encapsulation area adjacent to the first encapsulation area and a non-encapsulation area away from the first encapsulation area, and the two opposite side edges of the second encapsulation area are provided with inwardly recessed first grooves, and the distance between the two first grooves is 3.25 mm, and the encapsulation simultaneously encapsulates the first encapsulation area and the second encapsulation area.
[0011] In some embodiments, the non-encapsulation area is provided with inwardly recessed second grooves on the two opposite side edges.
[0012] In some embodiments, the non-encapsulation area comprises a rear rod fixedly connected to the first end portion, the rear rod comprises an expansion section close to the second end portion and a tapered section away from the first end portion, and the width of the expansion section is greater than the width of the tapered section.
[0013] In some embodiments, the width of the expansion section is 1.95-2.05 mm, the width of the tapered section is 1.87-1.93 mm, the distance between the top of the second encapsulation area and the bottom of the second end portion is 20.85-20.95 mm, and the distance from the bottom of the tapered section to the second end portion is 23.43-23.53 mm.
[0014] In a second aspect, the utility model discloses a charger, including the stainless steel pin of first aspect.
[0015] The utility model discloses a kind of stainless steel pins, including insert piece body and encapsulation;Insert piece body includes tail wing, middle rod and front rod, tail wing and front rod are respectively fixedly connected in the two ends of middle rod, and first encapsulation area is provided on middle rod, and encapsulation is wrapped in first encapsulation area, and the front and back of first encapsulation area are provided with multiple concave points. By being provided with multiple concave points on the front and back of first encapsulation area, the gripping force between encapsulation and first encapsulation area is improved, so that encapsulation and insert piece body connection are more closely. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.
[0017] Figure 1The utility model provides a front view of the stainless steel pin before setting rubber coating of the utility model embodiment provides;
[0018] Figure 2 For Figure 1 The side view of the stainless steel pin is shown in the figure.
[0019] Figure 3 The utility model provides a front view of the stainless steel pin after setting rubber coating of the utility model embodiment provides.
[0020] Figure 4 For Figure 3 The side view of the stainless steel pin is shown in the figure.
[0021] Reference signs:
[0022] 1, tail wing;11, first main body section;111, second rubber coating area;1111, first recess;112, non rubber coating area;1121, second recess;1122, rear rod;1122a, expansion section;1122b, close section;12, first end part;
[0023] 2, middle rod;21, first rubber coating area;22, concave point;
[0024] 3, front rod;31, second main body section;32, second end part. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0026] It should be understood that when used in the specification and the appended claims, the terms "comprise" and "include" indicate the existence of the described features, integers, steps, operations, elements, and or components, but do not exclude one or more other features, integers, steps, operations, elements, components, and or sets thereof.
[0027] It should be noted that, unless otherwise expressly specified and limited, the terms "mounting", "connecting", "connecting", "fixing", "setting" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. When an element is referred to as "on" or "below" another element, the element can be "directly" or "indirectly" above the other element, or there can be one or more intervening elements. The terms "first", "second", "third" and the like are only for the convenience of describing the technical solutions, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first", "second", "third" and the like can be explicitly or implicitly included one or more of the features. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0028] It should also be understood that the terms used in the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the present application and the appended claims, unless otherwise clear from the context, the singular forms "a", "an" and "the" are intended to include plural forms.
[0029] It should be further understood that the terms "and / or" used in the present application and the appended claims refer to any combination of one or more of the associated listed items and all possible combinations, and include these combinations.
[0030] Please refer to Figures 1 to 4 , wherein, Figure 1 the front view of the stainless steel pin before the setting of the rubber coating is provided for the embodiment of the present application; Figure 2 is Figure 1 the side view of the stainless steel pin; Figure 3 the front view of the stainless steel pin after the setting of the rubber coating is provided for the embodiment of the present application; Figure 4 is Figure 3 the side view of the stainless steel pin. It should be noted that, Figure 1 the three horizontal dashed lines in Figure 3 and Figure 4 the hatched part is the rubber coating
[0031] As Figures 1 to 4The utility model discloses a stainless steel prong, including the insert piece body and the rubber coating, the insert piece body includes empennage 1, middle rod 2 and front rod 3, the empennage 1 and the front rod 3 are fixedly connected respectively in both ends of middle rod 2, be equipped with first rubber coating area 21 on middle rod 2, the rubber coating is wrapped in first rubber coating area 21, the front and back of first rubber coating area 21 all are provided with a plurality of concave points 22.
[0032] In this embodiment, the stainless steel prong is an Australian standard charger prong, that is, it can meet the Australian standard detection standard. The insert piece body is a flat stainless steel insert piece, and specifically, 304 stainless steel with a hardness of 370-430HV can be selected to improve the hardness of the insert piece body. The empennage 1, the middle rod 2 and the front rod 3 are integrally formed. The rubber coating is wrapped around the corresponding position of the insert piece body after the insert piece body is processed by injection molding. The rubber coating plays a role of insulation and protection of the insert piece body. As users have higher and higher requirements for chargers, the weight of the charger is getting larger and larger, and the Australian standard detection standard needs to be tested at least 300 times at a height of 0.5 m. Under such high-intensity conditions, the hardware prongs on the market may have problems such as rubber coating falling off or cracking during the roller test, which affects the yield and the safety of users. The empennage 1 of the insert piece body in this embodiment is mainly used to connect with the charger body after the stainless steel prong is detected, and the front rod 3 is the part that needs to be inserted into the socket when the charger is used. The middle rod 2 of the insert piece body is provided with a first rubber coating area 21, and the front and back of the first rubber coating area 21 are provided with a plurality of concave points 22. The concave points 22 play a role of improving the holding force between the rubber coating and the first rubber coating area 21, so that the rubber coating and the insert piece body are more closely connected, so that the stainless steel prong can meet the increasingly high Australian standard test standard. The concave points 22 are formed by laser engraving on the front and back of the first rubber coating area 21 of the middle rod 2 after the insert piece body is stamped.
[0033] In some embodiments, the plurality of concave points 22 are arranged in a matrix.
[0034] In this embodiment, the plurality of concave points 22 are arranged in a matrix, and each concave point 22 is uniformly spaced. On the one hand, it can save the time of engraving, and on the other hand, it can ensure the structural strength of the insert piece body, so that the middle rod 2 can bear force uniformly when the insert piece body is subjected to external impact, for example, when it is subjected to roller test. Among them, the number of concave points 22 on the front of the middle rod 2 is forty-five, and the arrangement form of the concave points 22 is nine rows and five columns. The concave points 22 on the back of the middle rod 2 are arranged one by one corresponding to the concave points 22 on the front of the middle rod 2.
[0035] In some embodiments, the tail fin 1 includes a first main body segment 11 and a first end segment 12, and the front rod 3 includes a second main body segment 31 and a second end segment 32; one end of the first main body segment 11 is fixedly connected to one end of the middle rod 2, the other end of the first main body segment 11 is fixedly connected to the first end segment 12, one end of the second main body segment 31 is fixedly connected to the other end of the middle rod 2, and the other end of the second main body segment 31 is connected to the second end segment 32; the thickness of the middle rod 2 is less than the thickness of the first main body segment 11 and the second main body segment 31.
[0036] The thickness of the middle rod 2 is processed twice: First, the insert body is formed by stamping the initial blank. At this time, the thickness of the middle rod 2 is the same as the thickness of the first main body section 11 and the second main body section 31. Second, the middle rod 2 is reprocessed using CNC to make the thickness of the middle rod 2 less than the thickness of the first main body section 11 and the second main body section 31.
[0037] like Figure 1 and Figure 2 As shown, in some embodiments, the thickness T1 of the middle rod 2 is 1 to 1.1 mm, i.e., the tolerance is 1 ± 0.1 mm; the thickness T2 of the first main body segment 11 and the second main body segment 31 is 1.68 to 1.72 mm, i.e., the tolerance is 1.7 ± 0.2 mm; and the depth of the concave point 22 is 0.05 to 0.15 mm.
[0038] Furthermore, the width of the middle rod 2 is 5.45mm.
[0039] In this embodiment, the thickness of the first end portion 12 gradually decreases from its proximity to the first main body segment 11 towards its distance from the first main body segment 11. Specifically, the thickness of the bottom of the first end portion 12 is the same as the thickness T2 of the first main body segment 11, and the thickness of the top of the first end portion 12 is the same as the thickness T1 of the middle rod 2. The thickness of the second end portion 32 gradually decreases from its proximity to the second main body segment 31 towards its distance from the second main body segment 31. The thickness of the bottom of the second end portion 32 is the same as the thickness T1 of the middle rod 2, and the thickness of the top of the first end portion 12 is the same as the thickness T2 of the second main body segment 31.
[0040] In some embodiments, the first main body segment 11 includes a second coated area 111 adjacent to the first coated area 21 and a non-coated area 112 away from the first coated area 21. The two opposite sides of the second coated area 111 are provided with inwardly recessed first grooves 1111. The distance L1 between the two first grooves 1111 is 3.25mm. The coating simultaneously wraps the first coated area 21 and the second coated area 111.
[0041] In the embodiment, the second encapsulation area 111 is arranged on the first body segment 11 to expand the encapsulation range. The first recess 1111 is arranged on the opposite two side edges of the second encapsulation area 111 to improve the wrapping force between the encapsulation and the second encapsulation area 111, so that the encapsulation and the plug body are more closely connected.
[0042] In some embodiments, the non-encapsulation area 112 is provided with the second recess 1121 which is recessed inward on the opposite two side edges.
[0043] In the embodiment, the second encapsulation area 111 of the first body segment 11 is used for fixed connection with the charger body, and the second recess 1121 can improve the connection stability between the stainless steel plug pin and the charger.
[0044] In some embodiments, the non-encapsulation area 112 includes a rear rod 1122 which is fixedly connected with the second end 32, the rear rod 1122 includes an expansion segment 1122a close to the first end 12 and a tapered segment 1122b away from the first end 12, and the width of the expansion segment 1122a is greater than the width of the tapered segment 1122b.
[0045] The one end of the expansion segment 1122a is connected with the first end 12, the one end of the expansion segment 1122a is connected with the one end of the tapered segment 1122b, the width L2 of the expansion segment 1122a is 1.95-2.05 mm, that is, the tolerance is 2.0±0.05 mm, and the width L3 of the tapered segment 1122b is 1.87-1.93 mm, that is, the tolerance is 1.90±0.03 mm.
[0046] In some embodiments, the distance H1 between the top of the second encapsulation area 111 and the bottom of the second end 32 is 20.85-20.95 mm, that is, the tolerance is 20.90±0.05 mm, and the distance H2 from the bottom of the tapered segment 1122b to the second end 32 is 23.43-23.53 mm, that is, the tolerance is 23.48±0.05 mm.
[0047] Further, the width tolerance of the second body segment 31 is 6.25±0.03 mm, and the distance tolerance between the bottom side edge of the second end 32 and the edge of the second body segment 31 is 0.70±0.10 mm in the perspective view. Figure 1 The distance from the top of the second end 32 to the bottom thereof is 0.9 mm, and the distance from the top of the first end 12 to the bottom thereof is 0.5 mm.
[0048] The utility model embodiment further provides a charger which comprises the stainless steel plug pin provided in the above embodiment.
[0049] The stainless steel pin and the charger provided by the embodiment of the utility model can improve the holding force between the rubber coating and the plug body, so that the rubber coating and the plug body are more closely connected, so that the stainless steel pin can meet the increasingly high Australian standard test standard.
[0050] Further, the stainless steel pin and the charger are further improved in size according to the embodiment of the utility model, so that the special detection standard of the Australian standard can be met: 0.5 m height, within 300 times of the roller to meet the criterion:
[0051] Normal structure and electrical function (no deformation, no damage, cracks, ultrasonic shedding and other phenomena, rated input voltage, output voltage meets the specification requirements when full load works);
[0052] No abnormal sound and PCBA shaking phenomenon appears when the adapter is shaken;
[0053] The pin is allowed to be bent, and after bending, it can be restored (with the help of tools) and will not appear broken and cracks;
[0054] The insulation withstand voltage and leakage current test meets the specification book requirements;
[0055] Within 300-600 times of the roller, the insulation withstand voltage is normal, no structural function failure appears, no abnormal sound is required, and the function is normal. And 0.5 m height, 600 times of the roller within the specification, 6 times of the pin correction will not appear broken and cracks.
[0056] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the utility model, and these modifications or replacements should be covered within the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.
Claims
1. A stainless steel pin characterized by, The plug-in sheet body comprises a tail wing (1), a middle rod (2) and a front rod (3), the tail wing (1) and the front rod (3) are fixedly connected to two ends of the middle rod (2) respectively, the middle rod (2) is provided with a first encapsulation area (21), the encapsulation is wrapped in the first encapsulation area (21), and the front surface and the back surface of the first encapsulation area (21) are provided with a plurality of concave points (22).
2. The stainless steel prong of claim 1, wherein, The plurality of concave points (22) are arranged in a matrix form.
3. The stainless steel prong of claim 2, wherein, The number of the concave points (22) on the front surface of the middle rod (2) is forty-five, wherein the arrangement form of the concave points (22) is nine rows and five columns; the concave points (22) on the back surface of the middle rod (2) are arranged in one-to-one correspondence with the concave points (22) on the front surface of the middle rod (2).
4. The stainless steel prong of claim 1, wherein, The tail wing (1) comprises a first main body segment (11) and a first end portion (12), and the front rod (3) comprises a second main body segment (31) and a second end portion (32); one end of the first main body segment (11) is fixedly connected to one end of the middle rod (2), the other end of the first main body segment (11) is fixedly connected to the first end portion (12), one end of the second main body segment (31) is fixedly connected to the other end of the middle rod (2), and the other end of the second main body segment (31) is connected to the second end portion (32); the thickness of the middle rod (2) is less than the thickness of the first main body segment (11) and the second main body segment (31).
5. The stainless steel prong of claim 4, wherein, The thickness of the middle rod (2) is 1-1.1 mm, the thickness of the first main body segment (11) and the second main body segment (31) is 1.68-1.72 mm, and the depth of the concave point (22) is 0.05-0.15 mm.
6. The stainless steel prong of claim 4, wherein, The first main body segment (11) comprises a second encapsulation area (111) adjacent to the first encapsulation area (21) and a non-encapsulation area (112) away from the first encapsulation area (21), the opposite sides of the second encapsulation area (111) are provided with inwardly recessed first grooves (1111), the spacing between the two first grooves (1111) is 3.25 mm, and the encapsulation simultaneously wraps the first encapsulation area (21) and the second encapsulation area (111).
7. The stainless steel prong of claim 6, wherein, The opposite sides of the non-encapsulation area (112) are provided with inwardly recessed second grooves (1121).
8. The stainless steel prong of claim 7, wherein, The non-encapsulation area (112) comprises a rear rod (1122) fixedly connected to the first end portion (12), the rear rod (1122) comprises an expansion segment (1122a) close to the second end portion (32) and a closing segment (1122b) away from the first end portion (12), and the width of the expansion segment (1122a) is greater than the width of the closing segment (1122b).
9. The stainless steel prong of claim 8, wherein, The width of the expansion section (1122a) is 1.95-2.05 mm, and the width of the necking section (1122b) is 1.87-1.93 mm; the distance between the top of the second encapsulation area (111) and the bottom of the second end portion (32) is 20.85-20.95 mm; and the distance between the bottom of the necking section (1122b) and the second end portion (32) is 23.43-23.53 mm.
10. A charger characterized by comprising: A stainless steel pin comprising any one of claims 1 to 9.