Hole-type wiring terminal, terminal assembly and electric connector

Abstract

The utility model relates to a hole-type wiring terminal, a terminal assembly and an electric connector, the hole-type wiring terminal comprises a first contact plate, a second contact plate and a connecting part, the second contact plate and the first contact plate are oppositely arranged, and the second contact plate and the first contact plate are arranged at an interval; the connecting part is located on the same side of the first contact plate and the second contact plate, the connecting part is connected with the first contact plate and the second contact plate, a conductive slot is defined by the first contact plate, the second contact plate and the connecting part, and the conductive slot is used for insertion of a needle type wiring terminal; wherein the connecting part comprises a body and a clamping tongue, the body is provided with a through forming hole, the forming hole surrounds the clamping tongue, the clamping tongue is connected with the body, and the clamping tongue is turned outwards in the direction away from the first contact plate and the second contact plate relative to the body and is used for being in positioning fit with the insulator. As the first contact plate and the second contact plate are both of a plate-shaped structure, the contact area between the first contact plate and the needle-type wiring terminal can be conveniently large, and large current can conveniently pass through the contact plate and the needle-type wiring terminal.

Description

Technical Field

[0001] This application relates to the field of electrical connector terminal technology, and in particular to a hole-type terminal block, terminal assembly and electrical connector. Background Technology

[0002] In modern electronic devices and electrical systems, connector terminals are critical components used to achieve reliable connections between circuits. Currently, most connector terminals are formed by turning, creating a single-stage annular contact surface or a partially cut tooth structure. While this allows for the creation of continuous contact areas through rotary machining, the spiral grooves or multi-stage boss structures designed to improve conductivity often require multiple turning operations, resulting in excessive material removal and reduced processing efficiency. Furthermore, the contact area of ​​such terminals is limited by the matching between the rod diameter and the tool path. If a large-diameter rod is used to directly cut a wide contact surface, micro-cracks caused by cutting stress are easily generated, affecting the mechanical strength of the terminal. Utility Model Content

[0003] Therefore, it is necessary to provide a hole-type terminal block, terminal assembly, and electrical connector to address the problem that it is difficult to make terminals have a large contact surface through simple processing methods.

[0004] The first aspect of this application provides a hole-type terminal block, which includes a first contact plate, a second contact plate, and a connecting portion. The second contact plate is disposed facing the first contact plate and spaced apart from it. The connecting portion is located on the same side of the first and second contact plates and is connected to both the first and second contact plates. The first contact plate, the second contact plate, and the connecting portion together form a conductive slot for insertion of a pin-type terminal block. The connecting portion includes a body and a latch. The body has a through-hole that surrounds the latch. The latch is connected to the body and is turned outward relative to the body in a direction away from the first and second contact plates for positioning and engaging with an insulator.

[0005] In one embodiment, the body includes a first connecting arm and a second connecting arm, the forming hole is distributed between the first connecting arm and the second connecting arm, such that the first connecting arm and the second connecting arm are spaced apart, and the latch is located between the first connecting arm and the second connecting arm and connected to one of the first connecting arm and the second connecting arm.

[0006] In one embodiment, the first contact plate includes a plate body and a limiting body, the limiting body being connected to the plate body and protruding in a direction away from the second contact plate, the limiting body being used for positioning and cooperating with the insulator.

[0007] In one embodiment, the conductive slot has an inlet for inserting the hole-type terminal block, and the limiting body is connected to the side of the plate body opposite to the inlet. The limiting body is integrally formed with the plate body and is turned outward relative to the plate body.

[0008] In one embodiment, the hole-type terminal block further includes a cable connection segment connected to the second contact plate, the cable connection segment having a crescent-shaped cross-section for holding a cable.

[0009] In one embodiment, the first contact plate and the second contact plate are arranged parallel to each other.

[0010] In one embodiment, the first contact plate, the second contact plate, and the connecting portion have the same thickness.

[0011] In one embodiment, the first contact plate, the second contact plate, and the connecting portion are integrally formed, and the opposite sides of the connecting portion are respectively curved in an arc shape to connect with the first contact plate and the second contact plate.

[0012] A second aspect of this application also provides a terminal assembly, the terminal assembly including the hole-type wiring terminals as described above.

[0013] A third aspect of this application also provides an electrical connector, the electrical connector comprising the terminal assembly described above.

[0014] In the aforementioned hole-type terminal block, the first contact plate, the second contact plate, and the connecting portion form a conductive slot, which is used for insertion of pin-type terminal blocks. That is, the first and second contact plates can be used to contact pin-type terminal blocks. Since both the first and second contact plates are plate-shaped structures, they can easily have a large contact area with the pin-type terminal blocks, facilitating the handling of large currents.

[0015] Furthermore, the first contact plate and the second contact plate are arranged facing each other and spaced apart. The connecting portion is located on the same side of the first contact plate and the second contact plate, and is connected to both the first contact plate and the second contact plate. Thus, by bending the plate-shaped substrate in one area (e.g., by stamping), the bent area becomes the aforementioned connecting portion, and the two facing and spaced portions obtained by the bending are respectively the aforementioned first contact plate and the second contact plate. In other words, the hole-type terminal block provided in this application can be obtained simply by bending the plate-shaped substrate, making the processing and production method simple.

[0016] Furthermore, the connecting part includes a body and a latch. The body has a through-hole that surrounds the latch, which is connected to the body. Therefore, the latch and body can be formed simply by removing the solid structure of the area where the hole is located on the sheet metal (e.g., by stamping). Furthermore, since the connecting part is a bent connection, it does not need to directly contact the pin-type terminal. Therefore, by placing the latch on the body of the connecting part, the likelihood of insufficient contact area between the hole-type terminal and the pin-type terminal due to the latch being present can be reduced. Attached Figure Description

[0017] Figure 1 This is an isometric view of a hole-type terminal block provided in an embodiment of this application.

[0018] Figure 2 This is a top view of an exemplary pin-type terminal block provided in an embodiment of this application.

[0019] Figure 3 for Figure 2 The side view of the exemplary pin-type terminal block shown.

[0020] Figure 4 for Figure 1 The top view of the hole-type terminal block shown.

[0021] Figure 5 for Figure 1 Side view of the hole-type terminal block shown.

[0022] Figure 6 for Figure 4 The cross-sectional view of the hole-type terminal block shown along line AA.

[0023] Reference numerals: 10, hole-type terminal block; 11, conductive slot; 12, entrance; 20, pin-type terminal block; 21, elastic claw; 100, first contact plate; 110, plate body; 120, limiting body; 200, second contact plate; 300, connecting part; 310, body; 311, forming hole; 312, first connecting arm; 313, second connecting arm; 320, latch; 400, cable connecting section. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0025] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0026] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0030] One embodiment of this application provides a terminal assembly, which includes a through-hole terminal and an insulator (not shown in the figures, the same below), with the through-hole terminal passing through the insulator. The insulator is used to fix the through-hole terminal and isolate it from the external environment, achieving electrical insulation and reducing the probability of short circuits.

[0031] Furthermore, hole-type terminals are used to mate with pin-type terminals to achieve electrical conduction. Both hole-type and pin-type terminals can have large contact surfaces, thus facilitating the conduction of large currents. It is understood that in electrical connectors, the larger the contact area between the two terminals, the wider the current path and the lower the contact resistance, thereby reducing Joule heating and providing a basis for conducting large currents.

[0032] See Figure 1 , Figure 1 This diagram shows an isometric view of a hole-type terminal block provided in one embodiment of this application. The hole-type terminal block 10 includes a first contact plate 100, a second contact plate 200, and a connecting portion 300. The second contact plate 200 is disposed facing the first contact plate 100 and spaced apart from it. The connecting portion 300 is located on the same side of the first contact plate 100 and the second contact plate 200, and is connected to both the first contact plate 100 and the second contact plate 200. The first contact plate 100, the second contact plate 200, and the connecting portion 300 together form a conductive slot 11, which is used for inserting a pin-type terminal block. The connecting portion 300 includes a body 310 and a latch 320, which is connected to the body 310. The body 310 has a through hole 311 that surrounds the latch 320. The latch 320 is turned outward relative to the body 310 in a direction away from the first contact plate 100 and the second contact plate 200, for positioning and engaging with the insulator.

[0033] In the aforementioned hole-type terminal block 10, the first contact plate 100, the second contact plate 200, and the connecting portion 300 enclose a conductive slot 11, which is used for insertion of a pin-type terminal block. That is, the first contact plate 100 and the second contact plate 200 can be used to contact the pin-type terminal block. Since both the first contact plate 100 and the second contact plate 200 are plate-shaped, they can easily have a large contact area with the pin-type terminal block, facilitating the handling of large currents. In one aspect, the pin-type terminal block can surface-contact with the hole-type terminal block 10. For example, the pin-type terminal block can be approximately plate-shaped. After the pin-type terminal block is inserted into the gap between the first contact plate 100 and the second contact plate 200 (i.e., the conductive slot 11), the pin-type terminal block can simultaneously surface-contact with both the first contact plate 100 and the second contact plate 200, achieving large-area conductivity. Or, in combination... Figure 2 and Figure 3 On the other hand, the pin-type terminal 20 can also make line contact with the hole-type terminal 10. For example, the pin-type terminal 20 includes a resilient claw 21 with an arc-shaped outer surface. After the resilient claw 21 is inserted into the conductive slot 11, it is elastically retracted by the constraint of the first contact plate 100 and the second contact plate 200. Furthermore, due to the elasticity of the resilient claw 21, it has a tendency to expand outward, causing the outer arc surface of the resilient claw 21 to make line contact with the first contact plate 100 and the second contact plate 200. In short, regardless of whether the pin-type terminal 20 and the hole-type terminal 10 make surface contact or line contact, the plate-shaped first contact plate 100 and second contact plate 200 can have a large contact area with the pin-type terminal 20, which is convenient for handling large currents.

[0034] Furthermore, the first contact plate 100 and the second contact plate 200 are arranged facing each other and spaced apart. The connecting portion 300 is located on the same side of the first contact plate 100 and the second contact plate 200, and is connected to both the first contact plate 100 and the second contact plate 200. Thus, by bending the plate-shaped substrate in one area (e.g., by stamping), the bent area becomes the connecting portion 300, and the two facing and spaced portions obtained by the bending are the first contact plate 100 and the second contact plate 200, respectively. In other words, the hole-type terminal block 10 provided in this application can be obtained simply by bending the plate-shaped substrate, making the processing and production method simple.

[0035] Furthermore, the connecting portion 300 includes a body 310 and a latch 320. The body 310 has a through-hole 311 that surrounds the latch 320, which is connected to the body 310. Therefore, the solid structure in the area where the through-hole 311 is located on the sheet metal can be directly removed (e.g., by stamping), and the remaining structure can be used to form the latch 320 and the body 310, simplifying the manufacturing process. Moreover, since the connecting portion 300 is a bent connection part, it does not need to directly contact the pin-type terminal 20. Therefore, by placing the latch 320 on the body 310 of the connecting portion 300, the probability of insufficient contact area between the hole-type terminal 10 and the pin-type terminal 20 due to the latch 320 being present can be reduced.

[0036] In one embodiment, the hole-type terminal 10 can be formed entirely by stamping. For example, by stamping and rolling, the first contact plate 100 and the second contact plate 200 can be flipped around the connecting portion 300 to face each other, or by stamping and cutting to form the hole 311 and the latch 320.

[0037] Please see Figure 1 and Figure 4 In one embodiment, the body 310 is connected between the first contact plate 100 and the second contact plate 200. The body 310 includes a first connecting arm 312 and a second connecting arm 313, with holes 311 distributed between them, such that the first connecting arm 312 and the second connecting arm 313 are spaced apart. A latch 320 is located between the first connecting arm 312 and the second connecting arm 313 and connects to one of them. The arrangement of the holes 311 between the first connecting arm 312 and the second connecting arm 313 reduces the weakening of the structural strength of the connecting portion 300 caused by the removal of a portion of the solid area. In other words, the two connecting arms of the connecting portion 300 are spaced apart and both connected between the first contact plate 100 and the second contact plate 200, allowing the first connecting arm 312 and the second connecting arm 313 to evenly distribute external loads, avoiding stress concentration in a single area and reducing local fatigue. This improves the structural stability of the hole-type terminal block 10.

[0038] Please refer to section 1. In one embodiment, the first contact plate 100 includes a plate body 110 and a limiting body 120. The limiting body 120 is connected to the plate body 110 and protrudes away from the second contact plate 200. The limiting body 120 is used for positioning and engaging with the insulator. The limiting body 120 cooperates with the latch 320 to completely position the hole-type terminal 10 relative to the insulator in the axial direction. For example, if the limiting body 120 is used to restrict the hole-type terminal 10 from moving forward relative to the insulator in the axial direction, then the latch 320 is used to restrict the hole-type terminal 10 from retracting relative to the insulator in the axial direction.

[0039] Please see Figure 1 Combined Figure 4 In one embodiment, the conductive slot 11 has an inlet 12 for inserting a hole-type terminal block 10, and a limiting body 120 is connected to the side of the plate 110 opposite to the inlet 12. The limiting body 120 is integrally formed with the plate 110 and is turned outward relative to the plate 110. That is, the limiting body 120 can be easily formed by turning outward a portion of the limiting body 120 away from the inlet 12, which is convenient for processing and manufacturing and can make full use of the plate material.

[0040] Please see Figure 4 and Figure 5 Combined Figure 1 In one embodiment, the terminal block 10 further includes a cable connection segment 400. The cable connection segment 400 has a crescent-shaped cross-section for holding a cable. The crescent-shaped cross-section of the cable connection segment 400 allows for a larger contact area between the cable connection segment 400 and the cable, facilitating welding. Welding the cable connection segment 400 to the cable not only achieves a fixed connection but also enables electrical conductivity. Furthermore, due to its crescent-shaped cross-section, the cable connection segment 400 can be easily formed by stamping and rolling. The cable connection segment 400 is connected to the second contact plate 200; that is, the cable connection segment 400 does not have a direct connection to the first contact plate 100. It is understood that the end where the inlet 12 is located is typically used for insertion into the pin-type terminal block 20, therefore the cable connection segment 400 is usually located at the end furthest from the inlet 12. Therefore, in this embodiment, the limiting body 120 is connected to the first contact plate 100, and the cable connection segment 400 is connected to the second contact plate 200, so that the formation of the limiting body 120 and the formation of the cable connection segment 400 do not interfere with each other, making full use of the material.

[0041] Please see Figure 6 In one embodiment, the first contact plate 100 and the second contact plate 200 are arranged in parallel. This parallel arrangement provides a more stable contact point, making the conductive contact between the hole-type terminal block 10 and the pin-type terminal block 20 more reliable. Furthermore, the parallel arrangement ensures a more uniform distribution of contact pressure during insertion and removal of the hole-type terminal block 10 and the pin-type terminal block 20, reducing the likelihood of excessive local pressure and thus improving contact reliability.

[0042] Please continue reading. Figure 6 In one embodiment, the first contact plate 100, the second contact plate 200, and the connecting portion 300 have the same thickness. For example... Figure 6The thicknesses of the first contact plate 100 (reference numeral H1), the second contact plate 200 (reference numeral H2), and the connecting portion 300 (reference numeral H3) are shown. Uniform thickness allows the first contact plate 100, the second contact plate 200, and the connecting portion 300 to have similar mechanical strength. This enables them to evenly bear and distribute stress when subjected to external forces (such as insertion / extraction forces, vibration, etc.), reducing localized stress concentration that could lead to deformation or damage to the hole-type terminal 10, thereby improving the terminal's service life and reliability. Furthermore, the uniform thickness of the first contact plate 100 and the second contact plate 200 provides a more stable contact area and contact pressure, thereby reducing contact resistance and ensuring the stability and reliability of the electrical connection. This is particularly important for high-current or high-frequency electrical connections, reducing signal transmission instability caused by poor contact. Furthermore, the uniform thickness among the first contact plate 100, the second contact plate 200, and the connecting portion 300 helps to ensure consistent conductivity across all parts of the terminal, reducing localized poor conductivity or current concentration caused by thickness differences, thereby improving overall electrical performance and reliability.

[0043] Please continue reading. Figure 6 In one embodiment, the first contact plate 100, the second contact plate 200, and the connecting portion 300 are integrally formed from a sheet metal through stamping. The opposite sides of the connecting portion 300 are respectively curved and connected to the first contact plate 100 and the second contact plate 200. That is, one side of the connecting portion 300 is curved and connected to the first contact plate 100, and the other side of the connecting portion 300 is curved and connected to the second contact plate 200. Thus, the connecting portion 300 can smoothly transition between the first contact plate 100 and the second contact plate 200, facilitating a uniform thickness distribution among the first contact plate 100, the second contact plate 200, and the connecting portion 300.

[0044] In one embodiment, the first contact plate 100, the second contact plate 200, and the connecting portion 300 may be gold-plated, giving them good corrosion resistance, oxidation resistance, and high wear resistance. Simultaneously, gold plating enables the first contact plate 100, the second contact plate 200, and the connecting portion 300 to have stable and low contact resistance, allowing even weak signals to be transmitted accurately.

[0045] In one embodiment, the cable connector 400 may be tin-plated, which effectively improves soldering reliability. The tin layer prevents oxidation of the copper substrate and improves solder wettability, ensuring stable electrical conductivity. Its moderate flexibility facilitates a tight fit with the cable during crimping, enhancing mechanical strength. Simultaneously, tin plating is a low-cost and easy-to-process process, and it is less likely to generate brittle metal compounds during high-temperature soldering, thus improving connection stability.

[0046] One embodiment of this application also provides an electrical connector that includes a hole-type terminal block 10 as described in various embodiments. Therefore, the electrical connector has all the beneficial effects of the hole-type terminal block 10 as described in various embodiments, such as facilitating the handling of large currents and simplifying manufacturing.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The embodiments described above are merely illustrative of several implementation methods 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 protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A type of terminal block, characterized in that, The hole-type terminal block includes: First contact plate; The second contact plate is disposed facing the first contact plate and is spaced apart from the first contact plate. A connecting portion is located on the same side of the first contact plate and the second contact plate. The connecting portion is connected to both the first contact plate and the second contact plate. The first contact plate, the second contact plate, and the connecting portion together form a conductive slot. The conductive slot is used for inserting pin-type terminals. The connecting part includes a body and a latch. The body has a through hole that surrounds the latch. The latch is connected to the body and is turned outward relative to the body in a direction away from the first contact plate and the second contact plate for positioning and engaging with the insulator.

2. The hole-type terminal block according to claim 1, characterized in that, The body includes a first connecting arm and a second connecting arm. The forming holes are distributed between the first connecting arm and the second connecting arm, so that the first connecting arm and the second connecting arm are spaced apart. The latch is located between the first connecting arm and the second connecting arm and is connected to one of the first connecting arm and the second connecting arm.

3. The hole-type terminal block according to claim 1, characterized in that, The first contact plate includes a plate body and a limiting body. The limiting body is connected to the plate body and protrudes in a direction away from the second contact plate. The limiting body is used for positioning and cooperating with the insulator.

4. The hole-type terminal block according to claim 3, characterized in that, The conductive slot has an inlet for inserting the hole-type terminal block. The limiting body is connected to the side of the plate body opposite to the inlet. The limiting body is integrally formed with the plate body and is turned outward relative to the plate body.

5. The hole-type terminal block according to claim 1, characterized in that, The hole-type terminal block also includes a cable connection section, which is connected to the second contact plate. The cable connection section has a crescent-shaped cross section for holding the cable and fixing it to the cable.

6. The hole-type terminal block according to claim 1, characterized in that, The first contact plate and the second contact plate are arranged in parallel.

7. The hole-type terminal block according to claim 1, characterized in that, The first contact plate, the second contact plate, and the connecting portion have the same thickness.

8. The hole-type terminal block according to claim 1, characterized in that, The first contact plate, the second contact plate, and the connecting part are integrally formed, and the opposite sides of the connecting part are respectively curved in an arc shape to connect with the first contact plate and the second contact plate.

9. A terminal assembly, characterized in that, The terminal assembly includes the hole-type terminal block as described in any one of claims 1 to 8.

10. An electrical connector, characterized in that, The electrical connector includes the terminal assembly as described in claim 9.

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