Binding post flexible in wiring and compact in structure and printed board corresponding to binding post

Abstract

The utility model discloses a binding post flexible in wiring and compact in structure and a printed board corresponding to the binding post, a binding post body is provided with an installation lug seat, the installation lug seat is provided with a fastening hole used for being connected with the printed board in a matched mode through a fastening screw, and the installation lug seat is provided with a pin shaft used for being installed with a pin hole in the printed board in a matched and inserted mode; meanwhile, the binding post body is also provided with an external wiring port and an internal wiring port; the binding post provided by the utility model is mechanically fixed with the printed board through the pin shaft and the fastening hole on the mounting lug, so that mechanical stress generated on the welding part of the binding post and the printed board by torsional force of a fastener when a busbar or an OT terminal is disassembled and assembled can be effectively avoided, and the problem of poor circuit contact caused by soldering tin looseness is effectively solved; and one binding post is simultaneously provided with the input interface and the output interface, so that the number of the binding posts can be reduced during wiring, the wiring is flexible, the space occupancy rate of the binding posts on a circuit board is reduced, and the space is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit connection components, and in particular to a wiring column with flexible wiring, compact structure and reliability, and a printed board connected to the wiring column. BACKGROUND

[0002] In the design and manufacture of modern electronic devices, the wiring column as a key component of circuit connection directly affects the stability and reliability of the entire system. However, the existing wiring column technology has some limitations, which are particularly evident in high-density integration and space-limited applications.

[0003] Traditional wiring columns usually only provide one threaded interface, and this single interface design limits the connection direction and method of the wiring column. Referring to Figure 1 is a structural schematic diagram of a common wiring column on the market. As shown in the figure, the traditional wiring column has a cylindrical structure, which is divided into an upper half and a lower half. The top end of the upper half of the wiring column is provided with an external wiring port. In actual application, this means that the wiring column can only be connected to a wire or a device from the external wiring port, which is not flexible enough in occasions that require flexible wiring and space optimization. For example, on a complex circuit board, a single interface wiring column can cause wiring difficulties, increase design complexity, and may increase the size of the circuit board, which is a challenge for products pursuing miniaturization and thinness.

[0004] Referring to Figure 2 is a schematic diagram of the installation state of a traditional wiring column and a printed board. As shown in the figure, a hole is provided on the printed board for installing the wiring column, and the lower half of the wiring column is inserted into the hole and soldered with the printed board. Since the traditional wiring column usually only provides one threaded interface, when implementing the input and output functions of the circuit, the traditional design usually requires two independent wiring columns, one for input and the other for output. This design not only increases the complexity of the circuit board, but also significantly increases the occupied area of the circuit board.

[0005] In addition, the traditional wiring column is usually directly soldered and fixed on the PCB board. Although this soldering method can achieve a certain fixing effect, during the process of repeatedly installing, fixing or dismounting the bus bar or OT terminal, the solder joint may gradually loosen due to repeated mechanical stress. The loosening of the solder not only causes poor contact, but also may cause circuit short circuit or open circuit, which seriously affects the stability and safety of the equipment.

[0006] Therefore, the traditional wiring column still has many defects in actual application at this stage, and a new technical solution is needed to solve the problems in the prior art. CONTENT OF THE INVENTION

[0007] The application provides a flexible wiring and compact structure terminal post and a corresponding printed board to solve the problem of poor circuit contact caused by loose soldering at the soldering position of the terminal post and the printed board when the bus bar or OT terminal is disassembled and assembled multiple times.

[0008] To achieve the above object, the application provides the following technical scheme:

[0009] In one aspect, the application provides a flexible wiring and compact structure terminal post, comprising a terminal post body, wherein an installation lug is arranged on the terminal post body, a fastening hole for connecting the printed board through a fastening screw is arranged on the installation lug, and a pin shaft for adaptively connecting and installing with a pin hole on the printed board is arranged on the installation lug.

[0010] In the above technical scheme, further, two terminal ports are arranged on the terminal post body, wherein the two terminal ports are an external terminal port and an internal terminal port, respectively.

[0011] Further, the external terminal port and the internal terminal port are arranged at two ends of the terminal post body, respectively, and the installation lug is a plate-shaped structural member arranged radially along the terminal post body.

[0012] Further, the external terminal port is an internally threaded hole formed by inwardly recessing from one end face of the terminal post body, the internal terminal port is an internally threaded hole formed by inwardly recessing from the other end face of the terminal post body, and the external terminal port and the internal terminal port are not in communication with each other.

[0013] Further, the external terminal port is used for installing an external connection OT terminal, the external connection OT terminal is fastened and connected with the external terminal port through a first fastener, the internal terminal port is used for installing an internal connection OT terminal, the internal connection OT terminal is fastened and connected with the internal terminal port through a second fastener, and the first fastener and the second fastener are screws, respectively.

[0014] Further, the central axis of the external terminal port and the central axis of the internal terminal port are collinear.

[0015] Further, the terminal post body comprises an upper post body segment and a lower post body segment, the outer diameter of the upper post body segment is greater than the outer diameter of the lower post body segment, the installation lug is arranged on the outer wall of the upper post body segment, and the lower surface of the installation lug is flush with the lower surface of the upper post body segment.

[0016] Further, the fastening hole is a threaded hole penetrating the mounting lug seat, and the central axis of the fastening hole is parallel to the central axis of the terminal post; the pin shaft is arranged adjacent to the fastening hole, and the pin shaft is a columnar structural member arranged on the lower surface of the mounting lug seat.

[0017] In another aspect, the application provides a printed board corresponding to the flexible-wiring and compact-structure terminal post, comprising a printed board body, the printed board body being provided with a mounting hole for mounting the terminal post body, a pin hole for mating with the pin shaft on the mounting lug seat, and a fixing hole corresponding to the fastening hole on the mounting lug seat; the hole diameter of the mounting hole is adapted to the outer diameter of the terminal post, and the fastening hole and the fixing hole are connected and fixed by the fastening screw.

[0018] Compared with the prior art, the application has at least the following beneficial effects:

[0019] 1. Based on further analysis and research on the problems of the prior art, the application realizes that when the busbar or OT terminal is repeatedly disassembled from the terminal post or repeatedly fixed and mounted on the terminal post, the soldering tin at the welding position of the terminal post and the printed board will gradually loosen due to repeated mechanical stress, thereby causing poor circuit contact and possibly causing circuit short circuit or open circuit. Therefore, the application provides a flexible-wiring and compact-structure terminal post, which is mechanically fixed with the printed board through the fastening hole and the pin shaft on the mounting lug seat, thereby effectively avoiding the mechanical stress on the welding position of the terminal post and the printed board caused by the torsional force of the fastening member when the busbar or OT terminal is disassembled, ensuring the reliable connection of the terminal post and the printed board, and effectively solving the problem of poor circuit contact caused by soldering tin loosening.

[0020] 2. In the application, the pin shaft on the mounting lug seat can play a role in positioning and mounting, and the mounting lug seat is connected with the printed board by screw fastening through the fastening hole thereon. The cooperation of the pin shaft and the fastening screw not only provides fixation in the linear direction, but also limits rotation, thereby ensuring that the welding position of the terminal post and the printed board will not be subjected to torsional stress when the busbar or OT terminal is repeatedly disassembled and assembled, and avoiding soldering tin loosening.

[0021] 3. The terminal body provided in the present application is provided with two wiring ports, namely, an external wiring port and an internal wiring port. Compared with the one-way connection method of the traditional terminal, the present application not only has an internal threaded interface for external electrical connection to meet the structural requirements of external electrical connection, but also provides an internal fixed internal threaded interface to meet the structural requirements of internal electrical connection. A terminal has both input and output interfaces. The overall structure of the terminal is compact, the number of terminals can be reduced during wiring, the wiring is flexible, the space occupancy rate of the terminal on the circuit board is reduced, space is saved, and the circuit design and layout are simplified, reducing the complexity of the circuit board.

[0022] 4. In this application, the external connection port and the internal connection port are respectively arranged at the two ends of the terminal body, so that the terminal can be connected to the external and internal circuits at the same time, thereby improving the flexibility and diversity of the connection.

[0023] 5. The present application provides a printed circuit board corresponding to the above-mentioned terminal with flexible wiring and compact structure. The printed circuit board is provided with a mounting hole for mounting the terminal body, a pin hole for adapting and plugging with the pin shaft on the mounting ear seat, and a fixing hole connected to the fastening hole on the mounting ear seat in correspondence with the upper and lower sides. The printed circuit board is adapted to the above-mentioned terminal structure and can be reliably mechanically fixed to the terminal, ensuring that the solder at the welding point between the terminal and the printed circuit board will not loosen under the action of mechanical stress when the bus or OT terminal is disassembled and assembled multiple times, thereby ensuring reliable circuit connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing the present application; for example, based on the technical concepts and exemplary drawings disclosed in this application, those skilled in the art are able to easily make routine adjustments or further optimizations to the addition / reduction / attribution division, specific shapes, positional relationships, connection methods, and dimensional ratios of certain units (components).

[0025] Figure 1 This is a schematic diagram of the structure of common binding posts currently on the market;

[0026] Figure 2 This is a schematic diagram of the installation status of traditional terminal blocks and printed circuit boards;

[0027] Figure 3 A schematic diagram of the three-dimensional structure of a terminal provided by the present application in one embodiment;

[0028] Figure 4 Figure 1 is a schematic view of the bottom structure of an embodiment of the application; Figure 3

[0029] Figure 5 Figure 2 is a schematic view of the cross-sectional structure of A-A in Figure 1; Figure 4

[0030] Figure 6 Figure 3 is an exploded schematic view of the mounting of the terminal post and the printed board in an embodiment of the application;

[0031] Figure 7 Figure 4 is a schematic view of the mounting state of the terminal post and the printed board in an embodiment of the application.

[0032] Legend of reference signs:

[0033] 01, terminal post; 02, upper half of terminal post; 03, lower half of terminal post; 04, external wiring port; 05, printed board;

[0034] a, soldering and stannum piling position of printed board and terminal post;

[0035] 1, terminal post body; 11, upper post section; 12, lower post section; 13, external wiring port; 14, internal wiring port; 15, mounting ear seat; 16, fastening hole; 17, pin shaft;

[0036] 2, printed board; 21, mounting hole; 22, fixing hole; 23, soldering pad; 24, fastening screw;

[0037] 3, external connection OT terminal; 4, first fastener; 5, internal connection OT terminal; 6, second fastener. DETAILED DESCRIPTION

[0038] The application will be further described in detail below with reference to the accompanying drawings.

[0039] In the description of the application: unless otherwise specified, the meaning of "multiple" is two or more. The terms "first", "second", etc. in the application are intended to distinguish the objects referred to, and do not have a special meaning in the technical connotation aspect (for example, it should not be understood as an emphasis on importance or order, etc.). The expressions "include", "contain", "have" and the like also mean "not limited to" (certain units, components, materials, steps, etc.).

[0040] The terms such as "upper", "lower", "left", "right", "middle" and the like in the application are generally used for intuitive understanding with reference to the drawings, and are not an absolute limitation on the positional relationship in the actual product. Changes in these relative positional relationships are also considered within the scope of the description of the application without departing from the technical concept disclosed in the application. ​​

[0041] Embodiment one

[0042] The conventional terminal post usually only provides a threaded interface on one side, and is directly fixed on the printed board by welding. Frequent disassembly and assembly of the bus bar or OT terminal on the terminal post can cause the soldering tin at the welding position of the printed board and the terminal post to loosen, thereby causing poor contact or circuit failure. In addition, since the conventional terminal post usually only provides a threaded interface on one side, two terminal posts are required for input and output during circuit connection, resulting in a high space occupancy rate of the terminal post on the circuit board, complex wiring, a large overall volume, and difficulty in achieving the application requirement of device miniaturization. Therefore, the present application provides a terminal post with flexible wiring and compact structure, which is fixed by mechanical connection (fastening screw and pin shaft), reduces the mechanical stress acting on the welding position when the bus bar or OT terminal is frequently disassembled and assembled, thereby effectively solving the problem of loosening at the welding position, and by providing external and internal wiring ports on the terminal post, one terminal post has both input and output interfaces, the number of terminal posts can be reduced during wiring, the wiring is flexible, the space occupancy rate of the terminal post on the circuit board is reduced, and space is saved.

[0043] The terminal post provided in the embodiment mainly comprises a terminal post body 1, as shown in Figure 3 The terminal post body 1 is provided with a mounting ear seat 15, the mounting ear seat 15 is provided with a fastening hole 16 for connecting the printed board 2 through the fastening screw 24, and the mounting ear seat 15 is provided with a pin shaft 17 for mating and connecting with the pin hole on the printed board 2. The fastening hole 16 on the mounting ear seat 15 and the fastening screw 24 provide a strong fixing effect, and the soldering tin will not loosen due to vibration or external force during disassembly and assembly of the bus bar or OT terminal. At the same time, the cooperation of the pin shaft 17 and the pin hole increases the stability of the terminal post and the printed board 2, and the plug-in connection of the pin shaft 17 can facilitate the installation and positioning of the terminal post on the printed board 2. In addition, the cooperation of the fastening hole 16 and the pin shaft 17 makes the installation process of the terminal post more simple and convenient, and does not require additional space to accommodate complex fixing structures. The combination of the pin shaft 17 and the fastening screw 24 makes the installation of the terminal post more convenient and fast. Furthermore, due to the double fixation of the pin shaft 17 and the fastening screw 24, the connection between the terminal post and the printed board 2 is more firm and reliable, the contact of the circuit is enhanced, and welding is no longer the only connection method. Mechanical fixation can provide more stable electrical contact and avoid poor circuit contact caused by welding quality problems (such as soldering tin loosening, cracking, etc.).

[0044] In an embodiment of the present application, as shown in Figure 5The terminal post body 1 is provided with two terminal ports, which are an external terminal port 13 and an internal terminal port 14. The external terminal port 13 can be used to connect external electrical equipment or systems, and is suitable for situations where connection with an external power supply or other modules is required. The internal terminal port 14 can be used for internal circuit connection, such as connection to other components or modules on a circuit board, simplifying the distinction between internal and external wiring. By providing the external terminal port 13 and the internal terminal port 14, internal and external circuit connections can be made simultaneously on the same terminal post. This makes the wiring method more flexible, allowing the selection of which port to use according to different electrical requirements, and even enabling the connection of multiple circuits on the same terminal post.

[0045] The terminal post provided by the present application can support bidirectional wiring, making it more convenient for circuit designers to arrange electrical connections. In particular, in devices or cases with limited space, the space occupied by multiple terminal posts can be saved. In addition, in actual applications, users can directly connect through explicit internal and external terminal ports, reducing the risk of electrical failure caused by incorrect port connection. Furthermore, the two terminal ports are concentrated on one terminal post, avoiding the occupation of excessive space by multiple terminal post layouts. By reducing the number of terminal posts, the number of electronic components required in the device can also be reduced, thereby reducing the overall cost.

[0046] Therefore, by providing two terminal ports (external terminal port 13 and internal terminal port 14) on the terminal post body 1, more flexible and efficient wiring, simplified circuit design and installation process, optimized space layout and reduced cost can be achieved, while increasing the reliability and safety of the device. Such design not only helps to improve the overall performance of the electrical system, but also meets more complex electrical connection requirements.

[0047] In an embodiment of the present application, referring to Figure 5 The external terminal port 13 and the internal terminal port 14 are respectively arranged at both ends of the terminal post body 1, and the mounting ear seat 15 is a plate-shaped structural member arranged radially along the terminal post body 1. The central axis of the external terminal port 13 and the central axis of the internal terminal port 14 are collinear. The terminal post body 1 includes an upper column segment 11 and a lower column segment 12. The outer diameter of the upper column segment 11 is greater than the outer diameter of the lower column segment 12. The mounting ear seat 15 is arranged on the outer wall of the upper column segment 11, and the lower surface of the mounting ear seat 15 is flush with the lower surface of the upper column segment 11. The fastening hole 16 on the mounting ear seat 15 is a threaded hole penetrating through the mounting ear seat 15, and the central axis of the fastening hole 16 is parallel to the central axis of the terminal post. Referring to Figure 3 The pin shaft 17 on the mounting ear seat 15 is arranged adjacent to the fastening hole 16, and the pin shaft 17 is a columnar structural member arranged on the lower surface of the mounting ear seat 15.

[0048] The external wiring port 13 and the internal wiring port 14 are arranged at two ends of the terminal post body 1 respectively, so that the functions of each port are obvious, the user can more easily distinguish the connection of the external circuit and the internal circuit, and the misconnection phenomenon is avoided; in addition, by arranging the wiring ports at the two ends of the terminal post respectively, the space can be effectively utilized, the mutual interference or crowding between the ports is reduced, the layout makes the installation and arrangement of the terminal post more compact, and is particularly suitable for the equipment or system with strict space requirements.

[0049] In an embodiment of the present application, referring to Figure 5 The external wiring port 13 is an internally threaded hole formed by inwardly recessing one end face of the terminal post body 1 downward, the internal wiring port 14 is an internally threaded hole formed by inwardly recessing the other end face of the terminal post body 1 upward, and the external wiring port 13 and the internal wiring port 14 are not communicated with each other. In the present application, the external wiring port 13 and the internal wiring port 14 are not communicated with each other, which can effectively avoid the direct contact between the external circuit and the internal circuit, reduce the risk of electrical signal interference and short circuit, and realize electrical isolation; in addition, the internally threaded hole design helps to make the wiring more stable, and the threaded connection mode can provide good mechanical fixing force to prevent the wiring port from loosening or falling off.

[0050] Therefore, the terminal post provided by the present application is a single-ear bidirectional terminal post which simultaneously provides external and internal interfaces. After the mounting ear seat 15 on the terminal post is mechanically fixed with the printed board 2, the printed board 2 is welded with the terminal post to achieve electrical connection. When the OT terminal is installed, fixed or dismounted, the torsional force of the fastener will not loosen the soldering tin of the terminal post and the printed board 2. By providing bidirectional wiring ports and a stable mounting mode, the present application not only improves the space utilization rate and wiring connection flexibility on the circuit board, but also enhances the mechanical stability and the reliability of the circuit, simplifies the circuit design, and reduces the production cost.

[0051] Embodiment two

[0052] The present embodiment provides a printed board 2 corresponding to the above-mentioned wiring flexible and compact structure terminal post, referring to Figure 6 , 7 The printed board 2 includes a printed board 2 body, the printed board 2 body is provided with a mounting hole 21 for mounting the terminal post body 1, a pin hole for adapting and plugging with the pin shaft 17 on the mounting ear seat 15, and a fixed hole 22 corresponding to the upper and lower fastening holes 16 on the mounting ear seat 15; the hole diameter of the mounting hole 21 is adapted to the outer diameter of the terminal post, and the fastening hole 16 and the fixed hole 22 are connected and fixed by a fastening screw 24.

[0053] The mounting and fixing mode of the terminal post and the printed board 2 in the application is as follows: firstly, the terminal post body 1 is fixed on the printed board 2 by mechanical mounting, that is, the pin shaft 17 is inserted into the pin hole, and the fastening hole 16 and the fixing hole 22 are in communication in up and down direction and are fastened by the fastening screw 24; secondly, the terminal post body 1 is welded with the printed board 2, that is, the terminal post body 1 is inserted into the mounting hole 21 and is welded with the welding pad 23 around the mounting hole 21; finally, the terminal post body 1 is mounted and fixed with the OT terminal or bus bar.

[0054] In the application, referring to Figure 7 , the external connection port 13 on the terminal post is used to mount the external connection OT terminal 3, the external connection OT terminal 3 is fastened and connected with the external connection port 13 through the first fastening member 4; the internal connection port 14 is used to mount the internal connection OT terminal 5, the internal connection OT terminal 5 is fastened and connected with the internal connection port 14 through the second fastening member 6, and the first fastening member 4 and the second fastening member 6 are screws respectively.

[0055] In the application, after the pin shaft 17 (positioning pin) on the terminal post body 1 is matched with the pin hole on the printed board 2, the stress of the torque generated when the OT terminal or bus bar is mounted and fixed or dismounted on the welding point is perfectly avoided, so that the welding point is not loosened or fallen off, the circuit connection is reliable, and the contact is good.

[0056] In summary, the mounting lug provided on the terminal post body is mechanically fixed with the printed board, the stress of the torque generated when the OT terminal or bus bar is mounted and fixed or dismounted on the welding point is solved, the problem of loosening or falling off of the welding point is avoided, the internal and external electrical connection ports are provided on the terminal post body at the same time, the integration of input and output is realized, the overall structure of the terminal post is compact, the number of terminal posts can be reduced when wiring, the wiring is flexible, the space occupancy rate of the terminal post on the circuit board is reduced, the space is saved, the circuit design and layout are simplified, and the complexity of the circuit board is reduced.

[0057] The technical features of the above embodiments can be combined in any manner (as long as the combination of the technical features does not exist contradiction), in order to make the description simple, not all possible combinations of the technical features in the above embodiments are described; these embodiments which are not explicitly written should also be considered as the scope of the present application.

[0058] The application is described in detail above by general description and specific embodiments. It should be understood that, based on the technical concept of the application, some conventional adjustments or further innovations can be made to these specific embodiments; as long as these conventional adjustments or further innovations do not deviate from the technical concept of the application, the technical solutions obtained by these conventional adjustments or further innovations also fall within the protection scope of the claims of the application.

Claims

1. A terminal with flexible wiring and compact structure, characterized in that: The terminal body comprises a terminal body, on which a mounting ear seat is provided. The mounting ear seat is provided with a fastening hole for being adapted to be connected to the printed circuit board through a fastening screw, and the mounting ear seat is provided with a pin shaft for being adapted to be plugged and installed with the pin hole on the printed circuit board.

2. The flexible wiring and compact structure terminal according to claim 1, characterized in that: The terminal body is provided with two connection ports, which are an external connection port and an internal connection port respectively.

3. The flexible wiring and compact structure terminal according to claim 2, characterized in that: The external connection port and the internal connection port are respectively arranged at two ends of the terminal body, and the mounting ear seat is a plate-shaped structural member arranged along the radial direction of the terminal body.

4. The flexible wiring and compact structure terminal according to claim 3, characterized in that: The external connection port is an internal threaded hole formed by concave downward from one end surface of the terminal body, and the internal connection port is an internal threaded hole formed by concave upward from the other end surface of the terminal body. The external connection port and the internal connection port are not connected to each other; The external connection port is used to install the external connection OT terminal, and the external connection OT terminal is fastened to the external connection port through a first fastener. The internal connection port is used to install the internal connection OT terminal, and the internal connection OT terminal is fastened to the internal connection port through a second fastener. The first fastener and the second fastener are screws respectively.

5. The flexible wiring and compact structure terminal according to claim 4, characterized in that: The central axis of the external connection port and the central axis of the internal connection port are collinear.

6. The flexible wiring and compact structure terminal according to claim 3, characterized in that: The terminal body includes an upper column section and a lower column section, the outer diameter of the upper column section is larger than the outer diameter of the lower column section, the mounting ear seat is arranged on the outer wall of the upper column section, and the lower surface of the mounting ear seat is flush with the lower surface of the upper column section.

7. The flexible wiring and compact structure terminal according to claim 6, characterized in that: The fastening hole is a threaded hole passing through the mounting ear seat, and the central axis of the fastening hole is parallel to the central axis of the terminal; the pin shaft is arranged adjacent to the fastening hole, and the pin shaft is a columnar structural member arranged on the lower surface of the mounting ear seat.

8. A printed circuit board corresponding to the flexible wiring and compact structure terminal according to any one of claims 1 to 7, characterized in that: The printed circuit board comprises a main body, on which a mounting hole for mounting the terminal body, a pin hole for adapting and plugging with the pin shaft on the mounting ear seat, and a fixing hole correspondingly connected to the fastening hole on the mounting ear seat; the aperture of the mounting hole is adapted to the outer diameter of the terminal, and the fastening hole and the fixing hole are connected and fixed by the fastening screw.

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