A relay terminal connection structure

Abstract

The utility model discloses a relay terminal connecting structure relates to electrical connection technical field, solves the problem of traditional relay terminal layout limited, installation interference and the insufficient problem of connection stability. It includes relay main part, bolt mounting seat and linear type connecting metal sheet, and the relay main part is equipped with the electrically conductive metal sheet terminal of outward extension, and the bolt mounting seat is L shape integral structure, and is fixed with the terminal through welding etc. mode and is pasted, and the horizontal installation department is equipped with bolt hole and reserves the wiring avoidance space, and the linear type connecting metal sheet both ends are fixed through bolt, and the outer covering insulating sleeve. Bolt mounting seat and metal sheet can be parallel or vertical adaptation, satisfy terminal side by side, vertical arrangement. The structure promotes assembly efficiency, adapts compact space, guarantees the electrically conductive stability and installation safety.

Description

Technical Field

[0001] This utility model relates to the field of electrical components technology, specifically to a relay terminal connection structure. Background Technology

[0002] Relays are commonly used electrical control devices, and their terminals typically need to be connected to external circuits or internally bridged via connecting tabs. In existing technology, bent copper sheets are commonly used to achieve electrical connections between adjacent terminals. However, this bending of the copper sheet increases processing steps and costs, and may also affect conductivity and mechanical strength due to stress concentration at the bend.

[0003] More significantly, the installation space for the terminal bolt holders is often very limited due to the constraints of the relay's structure. For example, a common scenario is that the available space around the bolt holder is only 8.5mm wide, while the outer diameter of standard high-quality terminals (such as ring terminals) is typically 9.5mm. There is currently no effective solution for this. This makes it impossible to install compliant standard terminals within this space, forcing users to use non-standard or low-quality terminals, severely impacting the reliability and safety of the connection. Furthermore, traditional connection structures may loosen under vibration or installation torque. Therefore, a new relay terminal connection structure is urgently needed that optimizes space layout, accommodates standard terminals within limited space, simplifies the connection structure to reduce costs, effectively prevents loosening, and improves connection reliability. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a relay terminal connection structure. By optimizing the structure and layout of the bolt mounting base and cooperating with the linear connecting metal plate, the problems of insufficient installation space, high cost and easy loosening are effectively solved.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A relay terminal connection structure, comprising: A relay body 1, wherein the relay body 1 is provided with at least two relay terminals 2, wherein the relay terminals 2 are conductive metal sheets extending outward from the relay body 1 to its exterior; The bolt mounting base 4 includes a vertical connecting part 41 that is fitted and fixed to the relay terminal 2 to achieve a conductive connection, and a horizontal mounting part 42 that extends horizontally outward from one side of the vertical connecting part 41. The horizontal mounting part 42 is provided with a bolt mounting hole 43, and an installation space for avoiding the wiring terminal is formed between the axis of the bolt mounting hole 43 and the side of the vertical connecting part 41. The linear connecting metal piece 5 has through holes 51 at both ends that correspond to the bolt mounting holes 43. The bolt assembly 6 passes through the through holes 51 and is installed in conjunction with the bolt mounting holes 43, so that the linear connecting metal piece 5 is attached and fixed to the upper surface of the horizontal mounting part 42 of the adjacent bolt mounting seat 4.

[0006] Furthermore, this application also proposes that the axial distance of the bolt mounting hole 43 from the horizontal distance of the corresponding side of the vertical connection part 41 is not less than 5mm.

[0007] Furthermore, this application also proposes that the plate surface of the vertical connecting portion 41 of the bolt mounting seat 4 is parallel or perpendicular to the length direction of the straight connecting metal piece 5.

[0008] Furthermore, this application also proposes that the vertical connecting part 41 and the horizontal mounting part 42 are integrally formed to form an L-shaped structure.

[0009] Furthermore, this application also proposes that the horizontal mounting part 42 is provided with a limiting protrusion 44 on its side in the thickness direction, and the relay body 1 is provided with a slot 11 that engages with the limiting protrusion 44 to prevent the bolt mounting seat 4 from loosening.

[0010] Furthermore, this application also proposes that the bolt mounting hole 43 extends vertically and is partially embedded inside the relay body 1.

[0011] Furthermore, this application also proposes that the thickness of the linear connecting metal sheet 5 is 0.5 mm to 2.0 mm and the width is 5.0 mm to 10.0 mm.

[0012] Furthermore, this application also proposes that the vertical connecting part 41 of the bolt mounting seat 4 is fixedly connected to the relay terminal 2 by welding, riveting or threaded connection.

[0013] Furthermore, this application also proposes that the linear connecting metal sheet 5 is made of copper or brass, and its outer surface is wrapped with an insulating sleeve 52.

[0014] Space optimization for standard terminal compatibility: An innovative L-shaped bolt mounting structure pushes the bolt mounting hole outwards, creating valuable clearance between the bolt and the relay body. Even with a total installation space width of only 8.5mm, this design provides ample mounting space for standard terminals with an outer diameter of 9.5mm, completely solving space constraints.

[0015] Cost reduction: The use of straight connecting metal sheets completely eliminates the bending process (or processing into C-shaped short-circuit sheets), facilitates the installation of insulating sleeves, simplifies the processing flow, significantly reduces raw material and manufacturing costs, and improves safety and reliability.

[0016] Reliable connection, preventing loosening: The straight copper sheet has no bending stress concentration points, resulting in superior conductivity. The added limiting protrusions and slot structure, along with welding and other methods, form a double fixation, effectively resisting vibration and torque, preventing the bolt mounting seat from loosening, and greatly improving the stability and safety of long-term use.

[0017] Easy assembly: The structure is simple and clear, with all horizontal mounting parts at the same height, providing a flat mounting reference for the straight copper strips; the installation space for the terminals is spacious, making the assembly process smoother and improving production efficiency. Attached Figure Description

[0018] Figure 1 This is a front view of the overall structure of this utility model; Figure 2 This is a schematic diagram of the connecting metal sheet of this utility model; Figure 3 This is a cross-sectional view of the connection between the relay terminal and the bolt mounting base of this utility model. Figure 4 This is a schematic diagram of a standard ring terminal block. Figure 5 This is a schematic diagram of the structure of multiple relays connected in this utility model; Figure 6 This is a three-dimensional schematic diagram of the inverted L-shaped bolt mounting seat in this utility model; Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] like Figures 1 to 6 As shown, the relay terminal connection structure provided by this utility model mainly consists of a relay body 1, a bolt mounting base 4, and a linear connecting metal piece 5.

[0021] Specifically, the relay body 1 is typically made of insulating engineering plastic, and internally encapsulates components such as electromagnetic coils and contacts. At least two relay terminal mounting positions are diagonally staggered on the outer shell of the relay body 1, each mounting position housing a relay terminal 2. The relay terminal 2 is a conductive metal sheet extending outward from the relay body 1 (an insulating support, such as a plastic base, can be provided on the outside of the metal sheet according to actual insulation requirements to achieve insulation isolation from surrounding components). It is made of a material with good conductivity (such as copper or brass): one end serves as a contact part, penetrating deep into the relay body 1 and directly connecting to the contact system; the other end serves as an external connection part, extending outward in a flat shape to form a metal sheet body for mating with the bolt mounting seat 4. This metal sheet body provides the core mounting foundation for the improvements of this utility model.

[0022] The bolt mounting base 4 is one of the core improvements in this invention. It is preferably made of brass or copper, which has good electrical conductivity, and is manufactured through precision casting or stamping. The bolt mounting base 4 includes a vertical connecting part 41 and a horizontal mounting part 42. The vertical connecting part 41 and the horizontal mounting part 42 are preferably integrally formed to form a robust L-shaped structure, which ensures mechanical strength and avoids the contact resistance at the joint from affecting the conductivity.

[0023] The vertical connecting part 41 is firmly attached to the side or upper surface of the relay terminal 2 by means of welding, riveting, or threaded connection, achieving conductive connection directly through close contact of the metal surfaces, ensuring no additional impedance during current transmission, and meeting the stability requirements of mechanical fixation. The horizontal mounting part 42 extends horizontally from the lower end of the vertical connecting part 41 in a direction away from the relay terminal 2, avoiding structural interference with the terminal 2 and the relay body 1, and reserving space for the installation of subsequent wiring terminals.

[0024] Furthermore, such as Figure 6As shown, the bolt mounting base 4 can also adopt an overall “7” shaped structure, with its vertical connecting part 41 and horizontal mounting part 42 forming an inverted “L” shape, and the horizontal mounting part 42 extending horizontally outward from the top of the vertical connecting part 41. This structure can adapt to scenarios with ample top space, allowing for more radial movement space for the wiring terminals by adjusting the length of the horizontal mounting part 42. On the other hand, the “7” shaped topology enhances the torsional stiffness of the bolt mounting base 4 when subjected to vertical external forces, effectively reducing deformation caused by tension and ensuring connection stability. In addition, longitudinal reinforcing ribs can be added to both sides of the horizontal mounting part 42 of the "7"-shaped structure. These reinforcing ribs extend downward from the lower surface of the horizontal mounting part and cooperate with the side of the vertical connecting part 41. This not only significantly enhances the overall rigidity of the bolt mounting seat 4, but also plays an auxiliary limiting role in the installation of the linear connecting metal piece 5, preventing the metal piece from shifting in the width direction and improving the assembly accuracy when multiple relays are interconnected. Moreover, regardless of the type of "7"-shaped derivative structure used, its connection method with the relay terminal 2 and the functional design of the bolt mounting hole 43 are consistent with the above, ensuring that the electrical connection stability and space avoidance effect are not affected.

[0025] In a preferred embodiment, the plate surface of the vertical connecting part 41 of the bolt mounting base 4 and the length direction of the linear connecting metal piece 5 can be flexibly adapted to be parallel or perpendicular. This design, by adapting the direction of the flat structure of the vertical connecting part 41, avoids interference with the installation path of the metal piece in the thickness direction. More importantly, it can accurately match the two core application scenarios of "parallel connection" and "vertical connection" of relay terminals, significantly improving the layout flexibility of the connection structure.

[0026] When the two are parallel, the plate surface of the vertical connecting part 41 extends along the length direction of the straight connecting metal sheet 5, and its flat thickness direction does not overlap or interfere with the mounting plane of the metal sheet. This state is particularly suitable for the side-by-side layout of relay terminals (such as...). Figure 5 (Scenario with multiple relays arranged horizontally): The linear connecting metal sheet 5 can cover adjacent parallel terminals horizontally without having to avoid the protruding structure of the vertical connecting part 41. It can achieve synchronous bridging of multiple terminals in a compact horizontal space, and all horizontal mounting parts 42 can maintain the same height, ensuring that the metal sheet fits flat and the conductive contact is stable.

[0027] When the two are perpendicular, the surface of the vertical connecting part 41 is distributed along the width direction of the straight connecting metal piece 5, and its flat thickness direction is consistent with the width direction of the metal piece, so it will not occupy the installation space of the longitudinal extension of the metal piece. This state is specifically adapted to the vertical layout of relay terminals (such as scenarios where there is sufficient longitudinal space and limited lateral space in the equipment): the straight connecting metal piece 5 can cross the adjacent terminals above and below in the vertical direction. At this time, the vertical connecting part 41 will not protrude into the longitudinal path of the metal piece, which can ensure that the metal piece is installed straight without bending, and can also allow the vertical terminals to share the same set of connection structure, avoiding the stress concentration problem caused by the traditional bending of the metal piece when adapting to the vertical layout. At the same time, sufficient radial installation space is reserved for the wiring terminals next to the vertical terminals, such as the standard ring terminal with an outer diameter of 9.5mm can still be assembled smoothly.

[0028] In summary, both adaptation states are based on the flat structure of the vertical connection part 41. While avoiding installation interference, they respectively meet the layout requirements of "horizontal side by side" and "vertical arrangement" of terminals. This allows the connection structure to flexibly adapt to the internal space planning of different equipment without the need to design bolt mounting seats separately for different arrangement methods, effectively improving the product's versatility and assembly adaptability.

[0029] In a preferred embodiment, to prevent the bolt mounting seat 4 from loosening, a limiting protrusion 44 is provided on the side of the horizontal mounting portion 42 in its thickness direction. Correspondingly, a groove 11 matching the shape of the limiting protrusion 44 is machined or stamped on the body of the relay terminal 2. During assembly, the limiting protrusion 44 is first precisely embedded into the groove 11 to achieve pre-positioning and anti-rotation, and then subsequent welding is performed for fixation. This dual fixing mechanism of "clamping + welding" greatly enhances the torque resistance and vibration resistance of the connection.

[0030] like Figure 3 As shown, a bolt mounting hole 43 is provided on the horizontal mounting portion 42. The position of this bolt mounting hole 43 is key to space optimization. Its axis forms a mounting space between itself and the side of the vertical connecting portion 41 to avoid the wiring terminals. In a specific dimension embodiment, this distance is designed to be no less than 5mm to ensure sufficient radial mounting space for standard wiring terminals. Furthermore, the bolt mounting hole 43 can be designed to extend vertically and partially embed into the interior of the relay body 1. This design increases the engagement depth between the bolt and the relay body 1, improving the strength of the bolt connection and appropriately reducing the overall structural height to fit into compact equipment installation spaces.

[0031] The linear connecting metal sheet 5 is another core improvement in this invention. It is stamped from copper or brass strips with a thickness of 0.5mm to 2.0mm and a width of 5.0mm to 10.0mm, and its outer surface is wrapped with an insulating sleeve 52. This insulating sleeve 52 not only isolates the linear connecting metal sheet 5 from other surrounding conductive parts or the relay housing, preventing accidental short circuits caused by dense wiring and ensuring electrical safety; it also effectively blocks environmental impurities such as dust and moisture from contacting the metal sheet, slowing down oxidation and corrosion, and extending its conductivity and service life; at the same time, it has a certain degree of flexibility and temperature resistance (suitable for common working environments from -40℃ to 120℃), which does not affect the tight fit between the metal sheet and the horizontal mounting part 42, and can maintain structural stability when the relay heats up during operation, preventing protection failure due to high temperature. The linear connecting metal sheet 5 is a straight strip that does not require any bending. Each end has a through hole 51 punched in it, the diameter of which matches the diameter of the bolt mounting hole 43, ensuring that the bolt assembly 6 can be smoothly inserted.

[0032] During final assembly, the straight connecting metal piece 5 is placed vertically on the upper surface of the horizontal mounting portion 42 of two adjacent bolt mounting seats 4, with its through holes 51 at both ends aligned with the two bolt mounting holes 43. Then, the bolt assembly 6 is passed through the through holes 51 of the connecting metal piece in sequence, and finally screwed into the bolt mounting holes 43 and tightened. In this way, the straight connecting metal piece 5 is firmly pressed between the two bolt mounting seats 4, realizing the electrical connection between the two relay terminals 2.

[0033] Because the outward shift of the bolt mounting hole 43 creates ample space, even if a standard ring terminal with an outer diameter of 9.5mm is fitted onto the bolt, the terminal can be easily placed into the clearance space between the bolt and the relay body without being jammed. This completely solves the problem in the prior art where high-quality terminals could not be used due to the 8.5mm space limitation.

[0034] The relay terminal connection structure described in this utility model has advantages beyond just bridging the two terminals within a single relay. The length of the linear connecting copper strip 5 can be flexibly customized according to actual needs, enabling easy electrical connection and synchronization between multiple relays.

[0035] For example, such as Figure 5As shown, when controlling a multi-channel circuit, three, four, or more relays of the same model can be installed side by side. Each relay has the optimized terminal connection structure described in this invention. In this case, simply use a sufficiently long straight connecting copper strip to sequentially attach and fix it to the bolt mounting base 4 of the adjacent terminals of this row of relays, and lock it with the bolt assembly 6 to achieve electrical interconnection of the terminals on this side of all relays at once.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A relay terminal connection structure, characterized in that, include: The relay body (1) is provided with at least two relay terminals (2), and the relay terminals (2) are conductive metal sheets extending outward from the relay body (1) to its exterior. The bolt mounting base (4) includes a vertical connecting part (41) that is fitted and fixed to the relay terminal (2) to achieve a conductive connection and a horizontal mounting part (42) that extends horizontally outward from one side of the vertical connecting part (41). The horizontal mounting part (42) is provided with a bolt mounting hole (43). An installation space for avoiding the wiring terminal is formed between the axis of the bolt mounting hole (43) and the side of the vertical connecting part (41). A linear connecting metal piece (5) has through holes (51) at both ends that correspond to the bolt mounting holes (43). A bolt assembly (6) passes through the through holes (51) and is installed in conjunction with the bolt mounting holes (43) to make the connecting metal piece (5) fit and fix to the upper surface of the horizontal mounting part (42) of the adjacent bolt mounting seat (4).

2. The relay terminal connection structure according to claim 1, characterized in that, The axial distance of the bolt mounting hole (43) to the horizontal distance of the side of the vertical connection part (41) is not less than 5mm.

3. The relay terminal connection structure according to claim 1, characterized in that, The plate surface of the vertical connecting part (41) of the bolt mounting seat (4) is parallel or perpendicular to the length direction of the straight connecting metal piece (5).

4. The relay terminal connection structure according to claim 1, characterized in that, The vertical connecting part (41) and the horizontal mounting part (42) are integrally formed to form an L-shaped structure.

5. The relay terminal connection structure according to claim 1, characterized in that, The horizontal mounting part (42) has a limiting protrusion (44) on its side in the thickness direction, and the relay body (1) has a slot (11) that engages with the limiting protrusion (44) to prevent the bolt mounting seat (4) from loosening.

6. The relay terminal connection structure according to claim 1, characterized in that, The bolt mounting hole (43) extends vertically and is partially embedded inside the relay body (1).

7. The relay terminal connection structure according to claim 1, characterized in that, The thickness of the linear connecting metal sheet (5) is 0.5 mm to 2.0 mm, and the width is 5.0 mm to 10.0 mm.

8. A relay terminal connection structure according to claim 1, characterized in that, The vertical connecting part (41) of the bolt mounting seat (4) is connected to the relay terminal (2) by welding, riveting or threaded connection.

9. A relay terminal connection structure according to claim 1, characterized in that, The linear connecting metal sheet (5) is made of copper or brass and its outer surface is wrapped with an insulating sleeve (52).

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