A wiring terminal

Abstract

The application relates to a wiring terminal, comprising: a plug-in part; a clamping part arranged at the opposite end of the plug-in part and clamped and connected with an external element to form electrical contact; the clamping part at least comprises: a first elastic sheet in electrical contact with the external element; a second elastic sheet arranged at the side of the first elastic sheet away from the external element, and the elastic modulus of the second elastic sheet is greater than that of the first elastic sheet. The wiring terminal has the following remarkable beneficial effects: by arranging the double-elastic-sheet structure of the first elastic sheet and the second elastic sheet, and the elastic modulus of the second elastic sheet being higher than that of the first elastic sheet, the clamping part has stronger elastic recovery force during the insertion of the external element, and the clamping stability is effectively improved. The double elastic sheets have clear division of labor, fatigue damage caused by long-term repeated deformation of a single elastic sheet is avoided, the service life and long-term performance stability of the product are improved, and the wiring terminal is particularly suitable for high-strength terminal interconnection scenes between large-current transmission and devices.

Description

Technical Field

[0001] This application relates to the field of electrical connections, and more particularly to a terminal block. Background Technology

[0002] Terminal blocks, as key components in electrical connection systems, are widely used in power systems, industrial control equipment, modular power supply devices, and other applications. Their main function is to achieve mechanical fixing and electrical conduction between conductors. Traditional terminal blocks typically use screw crimping, plug-in connections, or spring clips, and their main structure is based on a single copper busbar, stamped parts, or crimped cylinders, aiming for simple manufacturing and quick assembly.

[0003] However, in practical use, existing terminal blocks generally have some problems, such as simple clamping structures and poor adjustment capabilities: existing clamping structures are mostly single spring or pressure plate designs, lacking multi-layer clamping or partitioned elastic structures, resulting in limited adaptability to insertion errors, especially when connecting male terminals or wires, easily leading to problems such as loose clamping and poor contact. Insufficient connection reliability, prone to loosening or overheating: in high-current conduction scenarios, terminal blocks not only need sufficient clamping force and contact area, but also need to maintain structural stability during long-term operation. Traditional structures are prone to contact loosening due to factors such as thermal expansion and contraction and mechanical vibration, increasing contact resistance, and in severe cases, leading to localized overheating or even ablation.

[0004] Therefore, the market urgently needs a new type of terminal block with a reasonable structure, reliable clamping, easy installation guidance, and suitable for high current or equipment extension connection needs, in order to improve the reliability, mechanical stability and modular expansion capability of electrical connections. Utility Model Content

[0005] The purpose of this application is to solve the problems of insufficient clamping strength and weak electrical contact mentioned above.

[0006] According to one aspect of this application, a terminal block is provided, comprising:

[0007] Connector;

[0008] A clamping part is provided at one end opposite to the plug-in part and is clamped and connected to an external component to form an electrical contact;

[0009] The clamping part includes at least:

[0010] The first spring contact is in electrical contact with the external component;

[0011] The second spring is disposed on the side of the first spring away from the external element, and the elastic modulus of the second spring is greater than that of the first spring.

[0012] Preferably, the clamping part further includes:

[0013] A fixing plate is disposed on the side of the second spring sheet opposite to the first spring sheet and is fixedly connected to the first spring sheet and the second spring sheet;

[0014] The fixing plate is provided with a first limiting part, the spacing of the first limiting part in the width direction is matched with the size of the first spring in the width direction, thereby limiting the displacement of the first spring in the width direction.

[0015] Preferably, the first spring is provided with a second limiting part, and the spacing of the second limiting part in the width direction matches the size of the second spring in the width direction, thereby limiting the displacement of the second spring in the width direction;

[0016] The first spring and the second spring are fixedly connected to the fixing plate by a plurality of rivets.

[0017] Preferably, the clamping part is provided with a guide opening structure, which is defined by a first guide wall disposed on the fixing plate and a second guide wall disposed on the first spring piece. The first guide wall and the second guide wall are disposed opposite to each other and form a channel for the introduction of external components in the insertion direction.

[0018] The opening of the guide opening structure faces the insertion direction. The first guide wall and the second guide wall are at their smallest distance near the entrance of the clamping part, and gradually open from there along the insertion direction, so that the guide channel expands in a funnel shape to guide the external component smoothly into the clamping part.

[0019] Preferably, viewed along a plane perpendicular to the insertion direction:

[0020] The upper surface of the insertion part and the upper surface of the fixing plate form a step difference H;

[0021] The step difference H and the material thickness T of the fixing plate satisfy: H = T ± 0.1T.

[0022] Preferably, the insertion portion includes an insertion front end disposed away from the clamping portion, and the insertion front end has chamfered structures at multiple edge positions along the width and thickness directions;

[0023] The chamfered structure is formed at multiple edge positions of the plug-in front end, and a transition slope is provided along the width and thickness directions of the plug-in portion, so that the front end of the plug-in portion is converging.

[0024] Preferably, the first and second springs are provided with a segmented structure at one end of their insertion direction near the second external element;

[0025] The segmented structure divides the first and second spring sheets into three elastic segments that are arranged side by side in the width direction by two slits spaced apart at this end.

[0026] Each of the elastic segments is configured to undergo independent elastic deformation along the thickness direction during male terminal insertion to enhance contact stability with the second external component.

[0027] Preferably, the plug-in portion is provided with a rivet nut, which is fixed to the plug-in portion by riveting. The inner hole of the rivet nut is used to connect a screw so that the terminal block is fixed to an external device.

[0028] The outer circumferential surface of the rivet nut is provided with circumferential anti-slip teeth.

[0029] Preferably, the plug portion is provided with a plurality of positioning holes, the positioning holes penetrating the upper and lower surfaces of the plug portion.

[0030] Preferably, the first spring is made of copper alloy and the second spring is made of stainless steel.

[0031] Compared with the prior art, the terminal block of the present invention has the following significant advantages:

[0032] Improved clamping stability: By setting a double-spring structure with a first spring and a second spring, and the elastic modulus of the second spring being higher than that of the first spring, the clamping part has a stronger elastic recovery force during the insertion of external components, which effectively improves the clamping stability.

[0033] Reliable electrical contact performance: The first spring is dedicated to direct contact with external components and can be made of copper alloy material with excellent electrical conductivity, while the second spring is used to provide auxiliary elastic support and can be made of high-strength materials such as stainless steel, thus balancing conductivity and structural strength.

[0034] Extended service life: The two springs have a clear division of labor, avoiding fatigue damage caused by repeated deformation of a single spring over a long period of time, thus improving the product's service life and long-term performance stability.

[0035] This structure not only overcomes the shortcomings of traditional structures such as weak connections and cumbersome assembly, but also achieves stable crimping of plug-in components through precise positioning and elastic clamping of the clamping parts, ensuring that the terminals have excellent conductivity and connection reliability. It is particularly suitable for high current transmission and high-strength terminal interconnection between devices. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the appearance of the wiring terminal according to one embodiment of this application;

[0038] Figure 2 This is an exploded view of the wiring terminal described in one embodiment of this application;

[0039] Figure 3 This is a top view of the wiring terminal block described in one embodiment of this application;

[0040] Figure 4 for Figure 3 A cross-sectional view of the aforementioned terminal AA;

[0041] Figure 5 for Figure 3 A cross-sectional view of point AA when the terminal block is fitted with an external component;

[0042] Figure 6 This is a schematic diagram of the fixing plate and the insertion part according to one embodiment of this application;

[0043] Figure 7 This is a schematic diagram of the appearance of the first spring sheet according to one embodiment of this application;

[0044] Figure 8 This is a schematic diagram of the appearance of the rivet nut according to one embodiment of this application.

[0045] Explanation of reference numerals in the attached drawings: 100, terminal block; 200, external component; 10, plug-in part; 11, second guide wall; 12, positioning hole; 13, chamfer structure; 20, clamping part; 21, first spring; 22, second spring; 23, fixing plate; 24, first limiting part; 25, first guide wall; 26, second limiting part; 30, riveting nut; 31, anti-slip teeth; 32, inner hole; 40, rivet. Detailed Implementation

[0046] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0048] In this specification and claims, the “length direction” of the terminal 100 refers to the direction in which the terminal body extends along the insertion direction; the “width direction” refers to the direction perpendicular to the length direction and extending laterally along the terminal body; and the “thickness direction” refers to the direction perpendicular to both the length and width directions.

[0049] Please refer to Figure 1 - Figure 8 One embodiment of this application provides a terminal block 100, including: a plug-in portion 10 and a clamping portion 20 disposed at one end opposite to the plug-in portion 10 and clamped and connected to an external component 200 to form an electrical contact; the clamping portion 20 includes at least: a first spring piece 21, which is in electrical contact with the external component 200; and a second spring piece 22 disposed on the side of the first spring piece 21 away from the external component 200, and the elastic modulus of the second spring piece 22 is greater than the elastic modulus of the first spring piece 21.

[0050] In this embodiment, it should be noted that the terminal block 100 includes a plug-in portion 10 and a clamping portion 20. The clamping portion 20 is disposed at the end of the plug-in portion 10 away from the plug-in direction and is used to form a clamping connection with an external component 200 (such as a male terminal or pin) to achieve stable electrical contact. The clamping portion 20 has two layers of elastic structure, specifically including: a first spring piece 21, which is close to and in direct contact with the external component 200 for conducting current; and a second spring piece 22, which is disposed on the side of the first spring piece 21 away from the external component 200 to enhance the overall elastic support. It is worth noting that there is a difference in the elastic modulus between the first spring piece 21 and the second spring piece 22. The second spring piece 22 is made of a material with a higher elastic modulus (such as stainless steel) to provide stronger resilience and mechanical support, while the first spring piece 21 is preferably made of a material with better conductivity (such as copper alloy) to achieve excellent electrical contact performance.

[0051] The technical solution of this embodiment, by setting a double-layer spring sheet structure in the clamping part 20 and selecting a combination of materials with different elastic moduli, not only significantly improves the elastic stability of the clamping structure, but also effectively distributes the mechanical stress of the first spring sheet 21 during use, preventing fatigue deformation caused by long-term clamping, thereby extending the service life of the overall terminal 100. Simultaneously, since the first spring sheet 21 is in direct contact with the external component 200 and is made of a highly conductive material, the overall electrical connection reliability of the terminal is greatly improved, meeting the requirements of high-current, high-reliability application scenarios. Furthermore, this structure also has good insertion force adaptability; that is, during the insertion or removal of the terminal from the external component 200, the double spring sheets work together to generate flexible buffering, effectively reducing insertion and removal resistance, improving the operating feel, and reducing component wear.

[0052] In this embodiment, the clamping part 20 further includes a fixing plate 23, which is disposed on the side of the second spring piece 22 away from the first spring piece 21 and is fixedly connected to the first spring piece 21 and the second spring piece 22; the fixing plate 23 is provided with a first limiting part 24, the spacing of the first limiting part 24 in the width direction matches the size of the first spring piece 21 in the width direction, thereby limiting the displacement of the first spring piece 21 in the width direction.

[0053] Optionally, the first spring 21 is provided with a second limiting part 26, the spacing of the second limiting part 26 in the width direction matches the size of the second spring 22 in the width direction, thereby limiting the displacement of the second spring 22 in the width direction; the first spring 21 and the second spring 22 are fixedly connected to the fixing plate 23 by a plurality of rivets 40.

[0054] In this embodiment, it should be noted that the clamping part 20 further includes a fixing plate 23, which is disposed on the side of the second spring piece 22 opposite to the first spring piece 21, and is fixed to the first spring piece 21 and the second spring piece 22 by a riveting structure to form a three-layer clamping structure. The fixing plate 23 serves as the supporting foundation of the clamping part 20, providing not only overall rigid support but also constraining the position of the spring pieces. To further enhance structural stability, the fixing plate 23 is provided with a first limiting part 24, located on both sides of the fixing plate 23, the spacing of which in the width direction matches the width of the first spring piece 21, thereby limiting the displacement or wobbling of the first spring piece 21 in the width direction during clamping. The first spring piece 21 is provided with a second limiting part 26, located on both sides of the first spring piece 21, the spacing of which in the width direction matches the width of the second spring piece 22, thereby limiting the displacement or wobbling of the second spring piece 22 in the width direction during clamping, preventing unstable electrical contact or clamping failure due to displacement. The first spring clip 21 and the second spring clip 22 are connected to the fixing plate 23 by multiple rivets 40 to achieve a firm assembly, while ensuring that the three can work together under stress.

[0055] By implementing the technical solution of this embodiment, the overall stability and accuracy of the clamping structure can be significantly improved by introducing a fixing plate 23 and setting a limiting part. This prevents the first spring piece 21 from shifting in the width direction due to insertion force or thermal expansion and contraction, ensuring the consistency and reliability of electrical contact during the clamping process. Simultaneously, the first spring piece 21 and the second spring piece 22 are connected to the fixing plate 23 through multi-point riveting, enhancing the mechanical strength and load-bearing capacity between each layer of the structure and effectively preventing the risk of failure due to local loosening. Furthermore, this three-layer structure maintains good elastic clamping performance while taking into account structural strength, electrical stability, and the reliability of processing and assembly, making it suitable for applications with high requirements for electrical contact safety and mechanical stability.

[0056] In an optional embodiment, the clamping part 20 is provided with a guide opening structure, which is defined by a first guide wall 25 disposed on the fixing plate 23 and a second guide wall 11 disposed on the first spring piece 21. The first guide wall 25 and the second guide wall 11 are disposed opposite to each other and form a channel for the external component 200 to be introduced in the insertion direction.

[0057] The opening of the guide opening structure faces the insertion direction. The first guide wall 25 and the second guide wall 11 are at their smallest distance near the entrance of the clamping part 20, and gradually open from there along the insertion direction, so that the inlet channel expands in a funnel shape to guide the external component 200 smoothly into the clamping part 20.

[0058] In this embodiment, it should be noted that the clamping part 20 is further provided with a guide opening structure for guiding the external component 200 (such as a male terminal) to be smoothly inserted into the clamping part 20. The guide opening structure is defined by two guide walls, specifically including: a first guide wall 25 disposed on the fixing plate 23, and a second guide wall 11 disposed on the first spring piece 21. The first guide wall 25 and the second guide wall 11 are disposed opposite to each other, forming an inlet channel for inserting the external component 200, which extends along the insertion direction. The opening end of the guide opening structure is arranged facing the insertion direction. The distance between the first guide wall 25 and the second guide wall 11 is smallest near the entrance of the clamping part 20, and gradually widens along the insertion direction from this position, so that the inlet channel forms a funnel-shaped expansion structure, thereby providing a clear guiding function and avoiding insertion difficulties or damage to the clamping structure due to misalignment during insertion.

[0059] The technical solution of this embodiment, by providing a guide opening structure in the clamping part 20 and utilizing the guide walls provided on the fixing plate 23 and the first spring piece 21 to jointly define the introduction channel, can effectively guide the external component 200 to be accurately inserted into the clamping area along the insertion direction. The flared, gradually expanding structure makes the insertion process more fault-tolerant. Even if there is a certain insertion offset, it can be automatically corrected by the guide wall, avoiding problems such as bending, scratching, or poor contact of the spring piece due to misaligned insertion. At the same time, this structure also improves the operational efficiency and reliability of the terminal assembly process, and is particularly suitable for automated insertion or high-frequency insertion and removal scenarios, enhancing the adaptability and durability of the overall structure without increasing the complexity of the manufacturing process.

[0060] In an alternative embodiment, viewed along a plane perpendicular to the insertion direction: the upper surface of the insertion part 10 and the upper surface of the fixing plate 23 form a step difference H; the step difference H and the material thickness T of the fixing plate 23 satisfy: H=T±0.1T.

[0061] In this embodiment, it should be noted that, in the observation plane perpendicular to the insertion direction, the upper surface of the insertion part 10 forms a step difference H relative to the upper surface of the fixing plate 23. The value of this step difference H and the material thickness T of the fixing plate 23 satisfy the following relationship: H = T ± 0.1T, that is, the step difference is basically equal to the thickness of the fixing plate 23, allowing for a 10% machining tolerance. Through this structural arrangement, the insertion part 10 and the fixing plate 23 have a specific relative misalignment in the height direction, so that when the terminal 100 is inserted into the clamping part 20 of the corresponding mating terminal, the lower surfaces of the fixing plates 23 of the two terminals can be in the same horizontal plane, ensuring the overall structural fit consistency and subsequent assembly accuracy.

[0062] The technical solution of this embodiment, by designing a step difference between the insertion part 10 and the fixing plate 23, and ensuring that this step difference is strictly matched with the thickness of the fixing plate 23, can effectively compensate for the height difference caused by the thickness during the connection of the two terminals. This ensures that the lower surfaces of the fixing plates 23 of the two terminals 100 are accurately aligned with the same plane after insertion. This structural design helps to achieve mechanical coplanar fit between the terminals, improves installation stability, reduces the risk of stress concentration or poor connection caused by height differences, and also facilitates the overall installation, positioning, and fastening of subsequent components. It is especially suitable for connection scenarios that require high-precision docking and high consistency in appearance.

[0063] In an optional embodiment, the plug-in portion 10 includes a plug-in front end disposed away from the clamping portion 20. The plug-in front end is provided with chamfer structures 13 at multiple edge positions along the width and thickness directions. The chamfer structures 13 are formed at multiple edge positions of the plug-in front end and are provided with transition slopes along the width and thickness directions of the plug-in portion 10, so that the front end of the plug-in portion 10 is converging.

[0064] In this embodiment, it should be noted that the insertion portion 10 includes an insertion front end disposed at the end away from the clamping portion 20. The insertion front end has chamfered structures 13 at multiple edge positions along its width and thickness directions. Specifically, the chamfered structures 13 are formed at the four corner regions of the insertion front end, that is, at the intersection of the two sides in the width direction and the two sides in the thickness direction. Each chamfered structure 13 is provided with a transition slope, which gradually extends inward from the edge of the insertion portion 10, thereby forming an inwardly converging shape at the insertion front end as a whole. The above-mentioned chamfered structures 13 can be arranged symmetrically to ensure multi-directional guiding effect during the insertion process and improve insertion smoothness.

[0065] By implementing the technical solution of this embodiment, a chamfered structure 13 is provided at the front end of the insertion part 10, which can effectively reduce edge interference between the insertion part and the mating structure (such as the opposite end clamping part 20 or the slot). Especially when there is a slight deviation in the direction of insertion force, the transition slope formed by the chamfered structure 13 can automatically guide and correct the insertion angle, making the insertion action smoother and more stable. In addition, the overall convergent structure of the insertion front end helps to reduce the insertion force, improve the insertion efficiency, reduce the wear and structural stress of the mating components, thereby improving the assembly reliability and service life of the terminal block 100, which is particularly suitable for application scenarios that require high-frequency insertion and removal or automated assembly.

[0066] In an optional embodiment, the first spring 21 and the second spring 22 are provided with a segmented structure at one end of their insertion direction near the second external element 200; the segmented structure divides the first spring 21 and the second spring 22 into three elastic segments arranged side by side in the width direction by two slits spaced apart at that end; each elastic segment is configured to undergo independent elastic deformation in the thickness direction during the insertion of the male terminal to enhance the contact stability with the second external element 200.

[0067] In this embodiment, it should be noted that the first spring piece 21 and the second spring piece 22 have a segmented structure in the clamping end region near the contact with the second external component 200, while the end near the riveting fixing plate 23 remains integral. This segmented structure divides the first spring piece 21 and the second spring piece 22 into three parallel elastic segments by opening two slits spaced apart along the width direction at the clamping end. Each elastic segment achieves independent elastic deformation at the clamping end, but remains integrally connected near the riveting point, ensuring the mechanical strength and integrity of the spring piece.

[0068] The technical solution of this embodiment, by segmenting the first spring piece 21 and the second spring piece 22 only at the clamping end, allows each elastic segment to independently generate elastic deformation along the thickness direction, improving the adaptability and clamping stability of the clamping part 20 to external components 200 of different sizes and shapes. Simultaneously, the spring pieces maintain an integral structure near the riveting point, ensuring a firm connection between the spring pieces and the fixing plate 23, enhancing mechanical strength and durability. This design balances the flexibility of elastic distribution with structural stability, effectively improving the electrical contact performance and service life of the terminals.

[0069] In an optional embodiment, the plug-in portion 10 is provided with a riveting nut 30, which is fixed to the plug-in portion 10 by riveting. The inner hole 32 of the riveting nut 30 is used to connect screws so that the terminal 100 is fixed to an external device. The outer peripheral surface of the riveting nut 30 is provided with circumferential anti-slip teeth 31.

[0070] In this embodiment, it should be noted that the insertion portion 10 of the terminal block 100 is provided with a riveting nut 30. The riveting nut 30 is fixed to the corresponding position of the insertion portion 10 by riveting, ensuring a stable connection between them. The riveting nut 30 has a through inner hole 32 for inserting and fixing a screw, thereby achieving a structural connection that securely mounts the terminal block 100 to an external device or equipment. The outer circumferential surface of the riveting nut 30 is provided with multiple anti-slip teeth 31 evenly distributed circumferentially. These teeth extend radially outward and surround the entire outer circumference of the nut, effectively increasing the mechanical engagement force between the nut and the insertion portion 10, preventing the nut from loosening or rotating during use.

[0071] The technical solution of this embodiment uses riveting to fix the nut to the connector 10, ensuring a tight connection between the nut and the terminal body, and improving the mechanical strength and stability of the overall structure. The inner hole 32 of the riveting nut 30 allows the terminal to be securely installed onto external devices with screws, meeting various fixing requirements. The anti-slip serration 31 structure on the outer circumference enhances the friction between the nut and the connector 10, significantly reducing the risk of the nut loosening under vibration or stress, ensuring the reliability and safety of the terminal connection. In addition, this design facilitates manufacturing and assembly, making it suitable for large-scale industrial production.

[0072] In one optional embodiment, the plug portion 10 is provided with a plurality of positioning holes 12, which penetrate the upper and lower surfaces of the plug portion 10.

[0073] In this embodiment, it should be noted that the insertion part 10 is provided with a plurality of positioning holes 12, which extend through the upper and lower surfaces of the insertion part 10 to form a through-hole structure. These positioning holes 12 are also called pin holes, and are reserved for inserting external pins or fixing pins to assist in the mechanical fixation of the clamping part 20. The number, distribution, and size of the positioning holes 12 are designed to adapt to different application requirements, ensuring that the pins can be firmly inserted and enhancing the mechanical connection strength between the terminal and the external component 200.

[0074] The technical solution of this embodiment, by providing a through positioning hole 12 in the plug portion 10, allows for auxiliary fixing of the terminal 100 via an external pin, supplementing the mechanical support when the clamping force of the spring clip in the clamping portion 20 is insufficient. The auxiliary fixing with the pin significantly improves the overall connection stability and safety of the terminal, effectively preventing loosening or detachment due to vibration, impact, or prolonged use, ensuring the continuity and reliability of the electrical connection. Furthermore, this design is highly compatible, allowing for flexible configuration according to different installation requirements, and is suitable for electrical connection devices under high vibration or harsh operating conditions.

[0075] In one optional embodiment, the first spring 21 is made of copper alloy, and the second spring 22 is made of stainless steel. Furthermore, the fixing plate 23 and the insertion part 10 are integrally formed copper alloy products.

[0076] In this embodiment, it should be noted that the first spring piece 21 in the clamping part 20 is made of copper alloy to ensure excellent electrical conductivity and flexible contact characteristics; the second spring piece 22 is made of stainless steel with high elastic modulus and excellent corrosion resistance to provide elastic support and mechanical strength for the structure. Furthermore, the fixing plate 23 and the insertion part 10 are integrally formed copper structures, manufactured through integral stamping or precision casting processes, ensuring a tight bond and conductive continuity between the two, and improving the overall mechanical strength and electrical performance of the terminal.

[0077] The technical solution of this embodiment, by using two different materials, copper alloy and stainless steel, to fabricate the first spring 21 and the second spring 22 respectively, achieves an organic combination of electrical conductivity and elastic support, ensuring the terminal's dual advantages in electrical connection stability and mechanical performance. The copper structure, integrally formed with the fixing plate 23 and the insertion part 10, eliminates connection gaps and contact resistance in traditional assembly, improving overall conductivity and mechanical reliability. Furthermore, this material combination and structural design effectively improves the terminal's corrosion resistance and service life, meeting the application requirements in complex environments.

[0078] The embodiments described above are merely illustrative of several implementations of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

Claims

1. A terminal block, characterized in that, include: Connector; A clamping part is provided at one end opposite to the plug-in part and is clamped and connected to an external component to form an electrical contact; The clamping part includes at least: The first spring contact is in electrical contact with the external component; The second spring is disposed on the side of the first spring away from the external element, and the elastic modulus of the second spring is greater than that of the first spring.

2. The terminal block according to claim 1, characterized in that, The clamping part further includes: A fixing plate is disposed on the side of the second spring sheet opposite to the first spring sheet and is fixedly connected to the first spring sheet and the second spring sheet; The fixing plate is provided with a first limiting part, the spacing of the first limiting part in the width direction is matched with the size of the first spring in the width direction, thereby limiting the displacement of the first spring in the width direction.

3. The terminal block according to claim 2, characterized in that, The first spring is provided with a second limiting part, and the spacing of the second limiting part in the width direction matches the size of the second spring in the width direction, thereby limiting the displacement of the second spring in the width direction; The first spring and the second spring are fixedly connected to the fixing plate by a plurality of rivets.

4. The terminal block according to claim 2, characterized in that, The clamping part is provided with a guide opening structure, which is defined by a first guide wall disposed on the fixing plate and a second guide wall disposed on the first spring piece. The first guide wall and the second guide wall are disposed opposite to each other and form a channel for external components to be introduced in the insertion direction. The opening of the guide opening structure faces the insertion direction. The first guide wall and the second guide wall are at their smallest distance near the entrance of the clamping part, and gradually open from there along the insertion direction, so that the guide channel expands in a funnel shape to guide the external component smoothly into the clamping part.

5. The terminal block according to claim 2, characterized in that, Viewed along a plane perpendicular to the insertion direction: The upper surface of the insertion part and the upper surface of the fixing plate form a step difference H; The step difference H and the material thickness T of the fixing plate satisfy: H = T ± 0.1T.

6. The terminal block according to claim 1, characterized in that, The insertion portion includes an insertion front end disposed away from the clamping portion, and the insertion front end has chamfered structures at multiple edge positions along the width and thickness directions; The chamfered structure is formed at multiple edge positions of the plug-in front end, and a transition slope is provided along the width and thickness directions of the plug-in portion, so that the front end of the plug-in portion is converging.

7. The terminal block according to claim 1, characterized in that, The first and second springs are provided with a segmented structure at one end of their insertion direction near the second external element; The segmented structure divides the first and second spring sheets into three elastic segments that are arranged side by side in the width direction by two slits spaced apart at this end. Each of the elastic segments is configured to undergo independent elastic deformation along the thickness direction during male terminal insertion to enhance contact stability with the second external component.

8. The terminal block according to claim 1, characterized in that, The plug-in part is provided with a rivet nut, which is fixed to the plug-in part by riveting. The inner hole of the rivet nut is used to connect a screw so that the terminal block is fixed to an external device. The outer circumferential surface of the rivet nut is provided with circumferential anti-slip teeth.

9. The terminal block according to claim 1, characterized in that, The plug-in part is provided with a plurality of positioning holes, which penetrate the upper and lower surfaces of the plug-in part.

10. The terminal block according to claim 1, characterized in that, The first spring is made of copper alloy, and the second spring is made of stainless steel.

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