Rubber core structure and connector
By introducing a clearance groove and a first ramp surface into the core structure, the problem of core lifting caused by solder material climbing is solved, ensuring welding strength and structural stability, simplifying mold forming, and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG SHENGLAN ELECTRONIC TECH CO LTD
- Filing Date
- 2025-03-20
- Publication Date
- 2026-04-21
AI Technical Summary
In the traditional soldering process of plug-in terminals, the solder material climbs along the outer surface of the terminal, causing the core body to be lifted up, affecting the soldering firmness and structural strength, and even causing unstable electrical connection.
The design incorporates a core structure, including a relief groove and a first ramp, to guide solder into the relief groove, preventing accumulation and ensuring a strong weld.
It effectively prevents solder from accumulating between the core and the circuit board, ensuring the welding strength and structural stability of the plug-in terminals, while simplifying the mold forming process and improving production efficiency and mold life.
Smart Images
Figure CN224153641U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of connectors, and in particular to a core structure and connector. Background Technology
[0002] In the manufacturing process of modern electronic devices, the soldering quality of connectors directly affects the reliability and performance of the entire electronic component. During the soldering process of traditional connectors, solder often climbs upwards along the outer surface of the connector, a phenomenon particularly noticeable when the bottom surface of the connector core is horizontal. When the solder accumulates to a certain level, it exerts an upward thrust on the bottom of the connector core, causing it to be lifted and affecting the solder joint's strength. This problem not only reduces the structural strength of the product but may also lead to unstable electrical connections and even equipment malfunctions. Utility Model Content
[0003] The purpose of this application is to provide a new core structure design that can effectively guide the flow of solder and prevent solder from accumulating on the bottom surface of the core, thereby ensuring the welding firmness and structural strength of the plug-in terminals.
[0004] To achieve the above objectives, this application provides the following technical solution:
[0005] A core structure includes a core body and multiple plug terminals. The plug terminals are disposed within the core body, with their lower ends extending outward from the bottom surface of the core body and folded outward. The bottom surface of the core body is provided with multiple clearance grooves, which are located between two plug terminals. Each clearance groove has a first ramp surface on both sides near the plug terminal.
[0006] Furthermore, the bottom surface of the core body is provided with a plurality of clearance grooves, which are located on the outer side of the lower end of the plug-in terminal.
[0007] Furthermore, the angle between the first inclined surface and the bottom surface of the core body is 125° to 145°.
[0008] Furthermore, the angle between the first ramp surface and the bottom surface of the core body is 135°.
[0009] Furthermore, the recessed groove is inclined outward.
[0010] Furthermore, a second inclined surface is provided on both sides of the avoidance groove, and the avoidance groove is connected to the avoidance inclined groove through the second inclined surface.
[0011] Furthermore, positioning surfaces are provided on both sides of the bottom of the adhesive core body.
[0012] Furthermore, a positioning element is provided on the positioning surface.
[0013] This application also proposes a connector, including a core structure, a housing, and a circuit board;
[0014] The housing is fitted onto the outer surface of the core structure, and the plug terminals of the core structure are soldered onto the circuit board.
[0015] Furthermore, a plastic cover is provided at the upper port of the housing.
[0016] The beneficial effects of this application are as follows:
[0017] This application provides a core structure and a connector using this core structure. The core structure effectively solves the problem in the prior art where solder climbs upwards along the plug-in terminal, causing the core body to be lifted, by providing multiple clearance grooves on the bottom surface of the core body and first ramp surfaces on both sides of the clearance grooves near the plug-in terminals. During the soldering process, as the solder climbs upwards along the plug-in terminal, it is guided into the clearance grooves by the first ramp surfaces. The clearance groove design can accommodate excess solder, preventing solder accumulation between the core body and the circuit board, thereby preventing the core body from being lifted and ensuring the soldering firmness of the plug-in terminals. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the core structure provided in an embodiment of this application and a partial enlarged view at point C;
[0019] Figure 2 This is a schematic diagram of the structure of the adhesive core before soldering to the circuit board, according to an embodiment of this application.
[0020] Figure 3 This is a front view and a partial enlarged view of the adhesive core structure provided in an embodiment of this application;
[0021] Figure 4 A bottom view and a partial enlarged view of the adhesive core structure provided in an embodiment of this application;
[0022] Figure 5 This is a schematic diagram of the connector structure provided in one embodiment of this application;
[0023] Explanation of reference numerals in the attached figures:
[0024] 100. Connector;
[0025] 110. Core structure; 120. Connecting terminal; 130. Circuit board; 140. Housing; 150. Plastic cover; 160. Core body;
[0026] 121. Welding plane;
[0027] 111. Alternating groove; 112. First inclined surface; 113. Alternating groove; 114. Second inclined surface; 115. Positioning surface; 116. Positioning component; Detailed Implementation
[0028] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.
[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.
[0030] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.
[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.
[0032] like Figure 1As shown, this application proposes a core structure 110, including a core body 160 and a plurality of plug terminals 120. The plug terminals 120 are integrally formed with the core body 160. The lower end of the plug terminal 120 extends out of the bottom surface of the core body 160 and is folded outward to form a welding plane 121. The welding plane 121 is used for welding corresponding to the welding part on the circuit board 130. The bottom surface of the core body 160 is provided with a plurality of clearance grooves 111. The clearance grooves 111 are located between two plug terminals 120. The two sides of the clearance grooves 111 are respectively provided with first slope surfaces 112 near the plug terminals 120.
[0033] like Figure 1 and Figure 4 As shown, during the welding process, such as Figure 4 As shown, the arrow indicates the direction of solder N flow, and solder N will climb upwards along the surface of the connector 120. Because the bottom surface of the core body 160 is provided with a relief groove 111, and first ramp surfaces 112 are provided on both sides of the relief groove 111 near the connector 120, the solder will be guided into the relief groove 111 by the first ramp surfaces 112 during its ascent. The relief groove 111, as a receiving space, can collect and accommodate excess solder, preventing solder from accumulating between the core body 160 and the circuit board 130. After excess solder is guided to the relief groove 111, it will not accumulate between the bottom surface of the core body 160 and the circuit board 130, thereby eliminating the top effect of solder on the core body 160. This ensures that the contact surface between the core body 160 and the circuit board 130 remains flat, avoiding deformation or lifting of the core body 160 due to solder buildup, and ensuring the soldering strength and structural stability of the plug-in terminal 120.
[0034] The design of the relief groove 111 not only accommodates solder but also simplifies the molding process of the bottom surface of the core body 160. The structure of the relief groove 111 facilitates the ejection design of components in the mold, making it easier to demold the core body 160 during injection molding, thereby improving production efficiency and mold life.
[0035] like Figure 1 and Figure 4As shown, in one embodiment, the bottom surface of the core body 160 is provided with a plurality of clearance grooves 113, which are located on the outer side of the lower end of the plug-in terminal 120. The design of the clearance grooves 113 plays a key role in the mold forming process. During injection molding, the structure of the clearance grooves 113 makes it easier for the component to be supported in the mold, reduces the contact area between the core body 160 and the mold, and reduces the demolding resistance. This not only simplifies the demolding process, but also reduces mold wear, improves the service life of the mold and production efficiency. The presence of the clearance grooves 113 allows the core body 160 to cool evenly during injection molding, reducing deformation or stress concentration problems caused by uneven cooling. This improves the molding accuracy and consistency of the core body 160 and ensures the quality stability of the product.
[0036] like Figure 3 As shown, in one embodiment, the angle D between the first ramp surface 112 and the bottom surface of the core body 160 is 125° to 145°. The angle of the first ramp surface 112 is designed to be 125° to 145° to ensure that the solder is effectively guided into the relief groove 111 during the climbing process. This angle range is neither too gentle, causing slow solder flow, nor too steep, preventing the solder from flowing smoothly into the relief groove 111, thereby achieving uniform distribution and effective containment of the solder.
[0037] If the angle of the first ramp 112 is less than 125°, the ramp will be too gentle, causing the solder to flow slowly and making it difficult to quickly enter the relief groove 111. This results in solder accumulating on the ramp and not being able to be contained in time. If the angle of the first ramp 112 is greater than 145°, the ramp will be too steep, preventing the solder from flowing smoothly into the relief groove 111, and even causing solder backflow, affecting the welding quality.
[0038] In one embodiment, the angle D between the first ramp surface 112 and the bottom surface of the core body 160 is 135°. This 135° angle design ensures that the solder is efficiently guided into the relief groove 111 during its ascent. This angle is neither too gentle, causing slow solder flow, nor too steep, preventing the solder from flowing smoothly into the relief groove 111, thus achieving uniform distribution and effective containment of the solder.
[0039] In one embodiment, the clearance groove 113 is inclined outward. The outwardly inclined clearance groove 113 design makes demolding easier after the mold is formed, reduces the contact area between the core body 160 and the mold, reduces demolding resistance, and improves production efficiency.
[0040] like Figure 4As shown, in one embodiment, a second ramp surface 114 is provided on both sides of the relief groove 113, and the relief groove 113 is connected to the relief chute 111 through the second ramp surface 114. The second ramp surface 114 can further guide the solder from the relief groove 113 into the relief chute 111, ensuring that the solder is completely contained and preventing the solder from accumulating or overflowing in the groove.
[0041] like Figure 4 As shown, in one embodiment, positioning surfaces 115 are respectively provided on both sides of the bottom of the core body 160.
[0042] like Figure 4 As shown, in one embodiment, a positioning element 116 is provided on the positioning surface 115. In this embodiment, the positioning element 116 is a positioning post. The positioning post can precisely cooperate with the corresponding hole on the circuit board 130 to ensure that the position and alignment of the glue core body 160 on the circuit board 130 fully meet the design requirements, and avoid welding or electrical connection problems caused by installation deviation.
[0043] like Figure 5 As shown, this application also proposes a connector 100, including a core structure 110, a housing 140 and a circuit board 130; the housing 140 is sleeved on the outer surface of the core structure 110, and the plug terminals 120 of the core structure 110 are soldered to the circuit board 130.
[0044] In one embodiment, a plastic cover 150 is provided at the upper port of the housing 140. The plastic cover 150 can effectively prevent dust, foreign objects or liquids from entering the interior of the housing 140, avoiding contamination or damage to the core structure 110 and the plug terminal 120, thereby improving the reliability and service life of the connector 100.
[0045] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.
[0046] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.
[0047] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “may include” and “have,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them. Although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A gum core structure characterized by: It includes a core body and multiple plug terminals. The plug terminals are disposed within the core body. The lower end of the plug terminals extends out of the bottom surface of the core body and is folded outward. The bottom surface of the core body is provided with multiple clearance grooves. The clearance grooves are located between two plug terminals. The clearance grooves are provided with first slope surfaces on both sides near the plug terminals.
2. The gum core structure according to claim 1, wherein: The bottom surface of the core body is provided with multiple clearance grooves, which are located on the outer side of the lower end of the plug-in terminal.
3. The gum core structure according to claim 1, wherein: The angle between the first inclined surface and the bottom surface of the core body is 125° to 145°.
4. The gum core structure according to claim 3, wherein: The angle between the first inclined surface and the bottom surface of the core body is 135°.
5. The gum core structure of claim 2, wherein: The clearance groove is inclined outward.
6. The gum core structure according to claim 2, wherein: The avoidance groove is provided with a second inclined surface on both sides, and the avoidance groove is connected to the avoidance inclined groove through the second inclined surface.
7. The gum core structure according to claim 1, wherein: Positioning surfaces are provided on both sides of the bottom of the adhesive core body.
8. A wick structure according to claim 7, wherein: Positioning elements are provided on the positioning surface.
9. A connector characterized by comprising: include The core structure as described in any one of claims 1 to 8; A housing, which is fitted onto the outer surface of the core structure; The circuit board has its plug terminals of the core structure soldered onto it.
10. A connector according to claim 9, wherein: The upper port of the housing is provided with a plastic cover.