HIGH TORQUE RESISTANT AND DOUBLE-STAGE SEALING CONNECTION CAPSULE.

Abstract

The invention relates to a connection capsule (10) that can be mounted without welding to the box body, used to create threaded counterparts for cover bolts in underground and wall-type junction boxes. The connection capsule (10) consists of a blind body (11) with an internal thread (13), a wide flange (15), an O-ring (17) and a plastering neck (18), which ensures that the plastering neck (12) is mechanically fixed to the box body by undergoing deformation during assembly. The O-ring (17), compressed between the wide flange (15) and the box body (21), forms the first sealing barrier around the mounting hole (22), while the blind body (11) creates the second sealing barrier by preventing fluid passage along the internal thread (13). Thus, the invention offers a connection solution that can withstand high tightening torques, resists loosening and provides double-stage sealing at the connection points.

Description

1 TARIFF HIGH TORQUE RESISTANCE AND DOUBLE-STAGE SEALING CONNECTION. CAPSULE Technical Area The invention describes a system that provides threaded counterparts for cover bolts in underground and wall-mounted junction boxes. It involves a leak-proof connection capsule that is mounted to the body without welding. The invention is particularly noteworthy for its wide flange design, which provides resistance to high tightening torques during assembly. 10 provided by the primary sealing barrier created by the compressed O-ring and the blind body structure. It involves a connection capsule with a second sealing barrier. State of the Art Today, threaded connection points are common on thin sheet metal, cast iron, or metal-bodied housings. rivet nuts, blind rivet nuts, for the purpose of forming Deformation-fixed threaded inserts and closed-end threaded fasteners are used. These components are typically used in applications where access to the back of the connection point is not possible. It is preferred and, after being placed in the mounting hole, is subjected to tensile or compressive force. The plastic is deformed and then fixed to the main body. Especially in electrical panels, 20 junction boxes, power distribution equipment, automotive enclosures, outdoor equipment, and fine details. It is widely used in sheet metal constructions. The main purpose in these systems is welding. To create a geared counterpart with sufficient load-bearing capacity without requiring further processing and maintenance. The goal is to provide a connection point that can be easily removed and reattached during use. However, current technologies have various technical problems. Standard open-ended rivets. In nuts, since the rear part of the body is exposed to the surrounding environment, water and moisture can pass through the internal thread line. It can advance and reach inside the housing. In addition, there is a mounting hole and a connecting element. the gaps between them, the micro-gaps formed during plastering, and the deformation zone Irregularities can also create additional seepage channels. This is especially true underground. This poses a critical risk in operational power distribution and cable connection boxes over time. groundwater, rainwater, or moisture resulting from condensation on the fasteners Leaving the surrounding areas to reach the inside of the enclosure can lead to electrical leaks, corrosion, and insulation problems. This can lead to decreased performance and reduced equipment lifespan. IP68 In applications where this level of protection is targeted, only the main seal around the cover needs to be 35. 2 It is not enough for it to simply be leakproof; each bolt connection point must also be independently sealed. is required. Another problem encountered in current systems is related to mechanical strength. Standard rivets A significant portion of the nuts have been developed for thin sheet metal applications and have high tightening torques of 5 sufficient performance against torsional, loosening or pull-out loads in the connections where it is applied It cannot be shown. The cover bolts have been repeatedly removed and reinstalled during maintenance and operation processes. Tightening causes fatigue at the connection points and, over time, the fastener to detach from the sheet metal. This can cause loosening. High tightening is especially applied in underground connection boxes. Under these torques, the loads are concentrated in a narrow area, which causes deformation on the sheet metal surface. It can also cause axial or rotational movements in the connecting element. The rotation of the element makes maintenance procedures difficult; its loosening, on the other hand, prevents the cover seal from being adequately fitted. This prevents the material from being compressed to the required level, resulting in a compromised seal. In addition, most known solutions offer excellent sealing and high mechanical strength properties. 15 They cannot be provided together in the same structure. In some products, gaskets or seals are used for sealing purposes. Despite the use of elastomer rings, these structures offer sufficient stability under high torque loads. not showing, and in some products, although mechanical strength has been increased, the mounting hole An effective seal cannot be created around it. Therefore, this is especially true for underground and external environments. In junction boxes operating under these conditions, capable of withstanding high clamping forces and resistant to loosening (20°C). capable of withstanding resistance, providing a reliable seal around the mounting hole, and with an internal thread line. A connection solution is needed that can prevent water ingress that may occur. An example of the known state of the art is model CN115507107A titled “Sealed Rivet Nut”. A patent application can be presented. In said application, a rivet with sealing properties 25 The nut structure is explained. The application describes the sealing mechanism surrounding the rivet nut. It focuses on the structural features that provide resistance to rotation and deformation. However, the document specifies the requirements for cover bolts used in underground junction boxes. High torque resistance, wide load-distributing flange structure, controlled O-ring assembly during installation. The double 30 formed by the compression and circumferential sealing of the blind body that closes the internal thread line. The barrier structure is not explained. Therefore, this solution is suitable under high compressive loads. the risk of loosening occurring at the connection points and the two required in the connection boxes It does not fully meet the multi-stage sealing requirement. Another example of the known state of the art is US20240068499A1 and “Blind Rivet Nut 35 This is a patent application titled "for Fixation and Sealing". In this application, especially regarding multi-layered A blind rivet nut solution developed to provide connection and sealing in plates. 3 It is explained in the document that the connection is reliably established and the seal is secure. Although the aim was to increase it, approximately 25 Nm is applied in underground type junction boxes. from a wide flanged load-distributing structure capable of withstanding repeated tightening torques at that level It is not mentioned. Also, an independent O-ring bearing around the mounting hole and the O-ring sealing The circumferential sealing system obtained by simultaneously compressing the material during the process is also 5 It is not defined. Therefore, the loosening resistance of the solution in question under high torque is not defined. increasing the seal is insufficient in terms of providing long-term sealing in junction boxes. is being evaluated. Another example of the state of the art is WO2024249099 and “Rivet Nut” 10. This is an international patent application titled [Title of Patent Application]. In this application, the application describes how a rivet nut can be assembled during mounting. A guide bushing structure is described that facilitates alignment and improves the installation process. The solution essentially involves more accurate mounting of the fastener and control of the assembly process. It is aimed at preventing water ingress. However, the application proposes a double-stage sealing approach, blind Internal threaded path enclosed by housing, O-ring supported circumferential sealing, 15 at high tightening torques. There are no applications specific to wide flange structures or junction boxes that reduce loosening. Therefore, while this solution provides ease of assembly, it also offers advantages in junction boxes. A structure was developed to solve the encountered problems of water tightness and high torque resistance. It does not include. In addition, IP68 rated sealed rivet nuts are also known in the market. These products... water ingress around the mounting hole is prevented by using a sealing ring or gasket under the flange. The aim is to reduce this. Similarly, thanks to the closed-end body, through the internal tooth line. Liquid passage is also restricted to a certain extent. However, these products can withstand high tightening torques. The precision-cast body architecture provides high strength, and the special 25mm design distributes the connection forces over a wide area. a special flange geometry that controls O-ring compression during the assembly process. The plastering system is not included. Also, in underground high-voltage connection boxes... a special structure designed to reduce the risk of loosening under the high mechanical loads encountered. This is not explained. Therefore, current solutions do not provide sealing or connection functions. Although it can only partially fulfill this, a 30 with high torque resistance and double barrier sealing in the same structure. It fails to offer an integrated solution that brings the two together. Therefore, the mounting hole should be able to resist loosening under high tightening torques. capable of providing a reliable environmental seal around it, preventing water from entering through the internal thread line. IP68 35 underground junction boxes that can block passages, can be mounted without welding, and are IP68 rated. A coupling capsule capable of meeting the required level of protection was needed. The solutions available in the current technology meet these requirements together and at an adequate level. 4 Due to its inability to withstand the pressure, it features a flanged structure with double-stage design providing high torque resistance. It was necessary to develop a new connection capsule that combines the sealing principle in the same housing. has become the case. Brief Description of the Invention 5 The present invention meets the aforementioned requirements while eliminating all disadvantages. and threaded cover bolts in underground and wall-mounted junction boxes, which offer some additional advantages. with a leak-proof connection capsule that forms a counterpart and is mounted to the box body without welding. It is related. 10 Based on the current state of the art, the aim of the invention is to create underground and wall-mounted junction boxes. The cap bolts used at the connection points provide resistance to high tightening torques. resisting loosening and occurring around the mounting hole and along the internal thread line. A weldless 15 that creates a reliable double-stage seal by preventing potential water ingress. The goal is to develop a connection capsule. The purpose of the invention is to reduce the loads caused by the cover bolt thanks to the wide flange body structure. wider distribution and connection strength under high tightening torques increase. 20 Another objective of the invention is to allow the connection capsule to rotate and move thanks to its wide flanged body structure. The goal is to reduce the tendency to relax. Another purpose of the invention is to provide a continuous 25° around the mounting hole thanks to the silicone O-ring and O-ring housing. the creation of a leak-proof line. Another purpose of the invention is to prevent water from entering thanks to the silicone O-ring that is axially compressed during assembly. The aim is to prevent moisture and dust from entering the box from around the mounting hole. Another purpose of the invention is to allow water to flow along the internal thread line and connect thanks to the blind body structure. The goal is to prevent it from reaching the inside of the box. Another objective of the invention is to increase the mechanical strength of the blind body thanks to its domed closed end structure. The goal is to increase the seal and create an additional watertight barrier. 35 Another purpose of the invention is to enable double-stage operation thanks to the combined use of the O-ring and the blind housing. The goal is to achieve a leak-proof seal. Another purpose of the invention is to facilitate the welding process of the connection capsule thanks to its moldable throat structure. It is fixed to the box body without requiring any additional fasteners. 5 Another purpose of the invention is to create a connection thanks to a coated gripping section formed by tensile force. The goal is to prevent the capsule from dislodging axially. Another purpose of the invention is to enable controlled assembly through a special stamping apparatus, resulting in 10 The connection capsule must be securely locked to the box body. Another objective of the invention is a one-piece precision-cast body made of AISI 304 stainless steel. This results in increased corrosion resistance and mechanical strength. Another purpose of the invention is that, thanks to its one-piece body structure, it can be joined at the connection points. The aim is to reduce potential leakage and strength problems. Another objective of the invention is to create a plasterable material adaptable to box bodies with thicknesses of 3 mm and 4 mm. Its throat design allows for use with different types of junction boxes. 20 Another purpose of the invention is to enable underground applications thanks to its mechanical locking structure that can withstand high torques. The goal is to safely meet tightening torques of approximately 25 Nm applied in connection boxes. Another purpose of the invention is to create a capsule 25 that provides an independent seal at each bolt connection point. Its structure helps meet IP68 protection requirements. The structural and characteristic features and all the advantages of the invention are given in the figures below and in relation to these figures. This will be understood more clearly thanks to the detailed explanation written with references. Therefore, the evaluation should also be made taking these figures and detailed explanations into consideration. 30 is required. Brief Description of the Figures The structure of the current invention and the best understanding of its advantages together with additional elements 35 This should be evaluated together with the figures explained below. 6 Figure 1 is a perspective view of the connection capsule. Figure 2 shows a schematic overview of the cross-section of the connection capsule. Figure 3 shows a schematic general view from the side of the connection capsule. Figure 4; Schematic overview of the connection capsule mounted on the connection box body. It is the appearance. 5 Reference Numbers 10. Connection capsule 11. Blind body 10 12. Plastered retaining section 13. Inner tooth 14. Domed enclosed end 15. Wide flange 16. O-ring slot 15 17. O-ring 18. Sealable throat 20. Junction box 21. Box body 22. Mounting hole 20 23. Cover 24. Cover bolt 25. Cover gasket Detailed Description of the Invention 25 In this detailed description, the subject of the invention is underground and wall-type junction boxes (200) covers a leak-proof system that forms threaded counterparts to the bolts and is mounted to the box body without welding. The link capsule (100) is only an example to help better understand the subject and does not contain any It is described in a way that will not create a limiting effect. 30 The invention shown in Figure 1 relates to cover bolts used in underground and wall-mounted junction boxes. (24) to create a threaded counterpart, to provide a connection point that can withstand high tightening torques and It is related to a connection capsule (10) developed to prevent water ingress from the connection area. The connection capsule (10) is a mechanical 35 that can be mounted to the box body (21) without the need for welding. It is a single-piece fastening element that combines strength and leak-proofness in the same structure. 7 capsule (10), blind body in general (11), internal thread (13), domed closed end (14), wide flange (15), O- It consists of a ring housing (16), O-ring (17) and a sealable neck (18). As shown in Figure 3, the blind body (11) runs along the central axis of the connecting capsule (10). It forms the main supporting body section which extends and has a domed closed end (14) at one end. 5 The blind body (11) is located at the rear of the connecting capsule (10) and the internal thread (13) It completely closes the region where it ends. The main function of the blind trunk (11) is to connect will carry the axial and radial loads to which the capsule (10) is subjected under high tightening torques to provide mechanical strength, deformation and fatigue occurring at the connection point to maintain structural integrity against the effects and also to prevent water from forming along the inner tooth (13), 10 by physically interrupting the path of moisture and other fluids, thus improving sealing performance. to increase. The internal thread (13) is the threaded connection area that runs along the central axis on the inside of the blind body (11). Internal thread (13) connects the puller device used during assembly to the connection capsule (10) 15 and during use the cover bolt (24) must form a screw connection with the connection capsule (10). The internal thread (13) provides the axial clamping forces created by the cap bolt (24) and by transferring the repetitive loads generated during service directly to the blind body (11) of the coupling capsule (10) contributes to its ability to withstand high tightening torques. In addition, the internal thread (13), cover 20 It creates a robust connection interface that provides The domed closed end (14) is located at the rear end of the blind body (11). As shown in Figure 2. The domed closed end (14) completely closes the section where the internal tooth (13) ends, closing the blind body (11). It forms the structure. The domed closed end (14) is geometric 25 resulting from the dome form. thanks to the strength, the axial loads created by the cover bolt (24) and the assembly contributes to a more homogeneous distribution of mechanical stresses that occur afterwards. In addition, the domed closed end (14) allows water and moisture to flow along the inner tooth (13). sealing the connection capsule (10) by creating a physical final barrier for other fluids. It improves its performance. Thus, the domed closed end (14) improves the structural performance of both the connection capsule (10). to increase its strength and to provide additional environmental sealing by the O-ring (17). This allows for the creation of a second sealing barrier. The wide flange (15) is located in the front part of the connection capsule (10) and radially around the body. It is the load-bearing section that extends outwards in one direction. As seen in Figures 1 and 4, the wide flange is 35 (15) contacts the outer surface of the box body (21) after assembly and the connection capsule (10) It forms the main support point. The main function of the wide flange (15) is to hold the cap bolt (24) 8 clamping forces generated by and mechanical loads occurring during operation local stress that may occur on the box body (21) by spreading it over a wider surface The aim is to reduce their concentration. In addition, the wide flange (15) allows the connection capsule (10) to rotate, It increases its resistance to loosening and axial movements, under high tightening torques. It contributes to maintaining the stability of the connection. Also, the wide flange (15) is 5 for the O-ring (17). By creating a counter-pressure surface, the O-ring (17) can be compressed in a controlled manner during assembly and It ensures the reliable creation of the environmental sealing line. The O-ring housing (16) is formed circumferentially on the wide flange (15) and the O-ring (17) It is a channel-shaped section designed with dimensions suitable for its placement. O-ring slot (16), connection 10 The O-ring is located in the front part of the capsule (10), integrated with the wide flange (15). The main function of the housing (16) is to ensure that the O-ring (17) is held in the correct position before assembly, Under the axial compression forces applied during assembly, the O-ring (17) becomes uncontrolled. to prevent displacement or protrusion of the O-ring (17) and to perform its circumferential sealing function The goal is to provide the necessary geometric support for it to function effectively. Also, the O-ring slot is 15. (16) The O-ring (17) must be compressed homogeneously between the wide flange (15) and the box body (21). by contributing to a continuous and reliable sealing line around the mounting hole (22) It helps in its creation. The O-ring (17) is a 20-inch elastomeric material positioned inside the O-ring housing (16). It is a circumferential sealing element. The O-ring (17) is between the connection capsule (10) and the box body (21). It is located and, after assembly, is compressed between the two surfaces to create a circumferential seal. It forms a barrier. The main function of the O-ring (17) is to prevent the formation of a barrier around the mounting hole (22). By filling the gaps, it prevents water, moisture, dust and similar external environmental effects from reaching the connection area. The aim is to prevent it from reaching inside the box (20). During assembly, the box body is connected to the wide flange (15) 25 The O-ring (17) compressed axially between (21) compensates for surface irregularities. By doing so, it creates a continuous sealing line. In this way, the O-ring (17) connects by closing off any fluid passages that may form along the outer circumference of the capsule (10) It forms the first sealing barrier at the point and protects the junction box (20) from water, moisture and It helps protect against dust. 30 The flushable throat (18) is located on the opposite side of the wide flange (15) and is controlled during assembly. It is a connection area designed to undergo plastic deformation, as seen in Figure 2. The throat (18) which can be plastered on, is placed inside the box body (21) of the connecting capsule (10). It is located in part. The main function of the plasterable throat (18) is to apply 35 during assembly. Due to the effect of axial tensile force, it expands radially, deforms, and the box body (21) is to create a mechanical locking structure that grips from both sides. As the pulling process progresses 9 plasterable throat (18), undergoing permanent deformation, resulting in plastered retaining section (12) bringing and connecting capsule (10) to box body (21) welding, soldering or additional fastening It ensures that it is securely fixed without requiring any element. In addition, the plasterable throat (18), the connection capsule (10) may become dislodged, rotate and subjected to high tightening torques in the axial direction. by creating resistance against loosening underneath, it contributes to the long-term mechanical stability of the connection. 5 In addition, the clamping force generated during the stamping process is provided by the wide flange (15). By helping to transfer the O-ring (17) together, the sealing structure is effectively sealed. It also supports its creation. The connection capsule (10) is mounted on the connection box (20) shown in Figure 4. This is done. First, the connection capsule (10) is placed on the box body (21). A mounting hole (22) of suitable diameter is drilled where the O-ring (17) will be placed. By placing it in its socket (16), the connection capsule (10) is made ready for assembly. From this stage then the connection capsule (10) will remain on the outer surface of the wide flange (15) box body (21) and The plasterable throat (18) will extend into the inside of the box body (21) through the mounting hole (22) 15 It is positioned by passing it through. Thanks to this arrangement, the wide flange (15) is positioned during the assembly process. While forming the support surface against the box body (21), the O-ring (17) with the wide flange (15) and the box It is waiting to be squeezed between the body (21). At the same time, the throat can be plastered. (18) could deform during the subsequent plastering process and grip the box body (21) It is located in position and the 20 required for mechanical fixation of the connection capsule (10). It forms the initial settlement. In the next step, a special puller is screwed into the internal thread (13) of the connecting capsule (10). With the axial retraction of the pulling device, the wide flange (15) is outside the box body (21). While resting on its surface, the plasterable throat (18) has a high tensile strength 25 on the inside of the box body (21). Under the influence of these forces, it begins to undergo controlled plastic deformation. Tensile process As it continues, the plasterable throat (18) widens radially and spreads outwards, and the plastered The resulting coated retaining section (12) is formed inside the box body (21). While resting on the surface, the wide flange (15) rests on the outer surface of the box body (21) and thus The box body (21) is clamped between two opposing retaining surfaces. Thanks to this structure, the connection is 30 capsule (10) can be attached to the box body (21) without welding, soldering or additional fastening elements It is permanently fixed, gains high resistance to displacement in the axial direction, and The tendency for rotation, loosening, and movement that can occur under high tightening torques is significant. This is significantly reduced. In addition, the mechanical locking structure obtained as a result of the coating process, the lid 35 to reliably carry the repeated tightening and loosening loads applied by the bolt (24). By contributing, it increases the long-term mechanical stability of the coupling capsule (10). During the assembly process, the wide flange (15) is drawn towards the box body (21) due to the effect of the tensile force. When pressed, the O-ring (17) located between the wide flange (15) and the box body (21) moves axially. It is compressed in a controlled manner. As a result of the compression of the O-ring (17), around the mounting hole (22) The surface voids found are filled and between the connection capsule (10) and the box body (21) A continuous environmental sealing line is created. Thus, 5% of the air coming from the external environment can be removed. water, moisture, dust and similar contaminants around the mounting hole (22) of the junction box (20) Access to the inside is prevented. In addition, the blind body (11) and the domed closed end (14), inside completely closing the area where the tooth (13) ends between the cap bolt (24) and the inner tooth (13) It physically terminates any potential path of fluid expansion that might occur. Thanks to this structure, the assembly... Even if the sealing line around the hole (22) weakens for any reason, the blind 10 The second barrier formed by the body (11) and the domed closed end (14) is the connection box of the liquids. (20) prevents it from reaching. As a result, the environmental primary created by the O-ring (17) The second formed by the sealing barrier, the blind body (11) and the domed closed end (14). The sealing barrier works together to create a highly reliable, two-stage sealing structure. and the sealing performance of the junction box (20) at IP68 level 15 It contributes. After the assembly process is completed, the cover (23) is placed on top of the junction box (20). It is placed. The lid seal (25) is positioned between the lid (23) and the box body (21). and the cover bolt (24) is passed through the connection hole on the cover (23) to connect 20 It is screwed into the inner thread (13) of the capsule (10). The axial effect created by tightening the cover bolt (24) The clamping force is transferred from the connection capsule (10) to the box body (21) and the cover seal (25) by compressing in a controlled manner the main circumferential seal of the junction box (20) is provided. Connection capsule (10), wide flange (15), blind body (11) and coated Thanks to the retaining section (12), it maintains its structural stability even under high tightening torques, 25 It resists turning and loosening. At this stage, the cover gasket (25) connection While ensuring the overall seal of the box (20), the O-ring on the connection capsule (10) (17), blind body (11) and domed closed end (14) at each cover bolt (24) connection point It forms an independent sealing system. The O-ring (17) goes around the mounting hole (22). While preventing possible fluid passages, the blind body (11) and domed closed end (14) internal thread 30 It closes the possible water advance path that may occur along (13). Thus, the connecting capsule (10), By working together with the cover gasket (25), it creates an additional protective structure for the connection points. to seal them separately and to protect the junction box (20) from long-term water, moisture and dust It contributes to its protection. As a result, the connection capsule (10) withstands high tightening torques. durable, resistant to loosening, and with a double-stage 35 at each connection point. It creates a reliable connection solution that ensures a leak-proof seal.

Claims

11 REQUESTS 1. To be mounted without welding into the mounting hole (22) located in a box body (21) and a connection developed to form a threaded connection counterpart to a cap bolt (24) The capsule is (10) and its feature is; 5 - forming a screw connection with the cover bolt (24) and centered inside the blind body (11) internal tooth (13) extending along the axis - to make a connection with the cap bolt (24) and to remove any liquid that may form along the internal thread (13). blind body to prevent their passage (11), - to distribute the bonding loads and create the pressure surface for the sealing element 10 on a wide flange (15) positioned at one end of the blind body (11), - an O-ring (17) to provide a seal around the mounting hole (22), - deformed during assembly, the connection capsule (10) to the box body (21) a plasterable flange positioned on the opposite side of the wide flange (15) to secure it. It contains the throat (18). 15 2. The connection capsule (10) conforming to claim 1, its feature is that it is at one end of the blind body (11). It includes a positioned domed closed end (14).

3. Connection capsule (10) in accordance with claim 1, its feature is; on a wide flange (15) It contains an O-ring slot (16) into which the O-ring (17) is placed.

4. The connection capsule (10) conforming to Claim 1, its feature is; assembly of the plasterable throat (18) 20 subsequently, the box body (21) formed by plastic deformation, wide flange (15) includes a coated retaining section (12) that grips from both sides.

5. The connection capsule (10) conforming to Claim 1, its feature is; blind body (11) and domed closed end (14) It includes a second sealing barrier formed along the internal tooth (13).

6. The connection capsule (10) conforming to Claim 1 is characterized by being a single piece of 25 connection capsule (10). It has a precision cast body structure.

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