PCB wiring terminal

Abstract

The utility model relates to the field of power electronic equipment, in particular to a PCB (printed circuit board) wiring terminal, which comprises a top plate, two opposite sides of the top plate longitudinally extend to form side plates, and the two side plates and the top plate enclose to form an assembly area; one end, far away from the top plate, of each side plate is provided with a welding pin, and the welding pins are used for connecting a PCB (Printed Circuit Board); the top plate is provided with a connecting through hole, and the connecting through hole is used for being connected with an external accessory; a connecting piece is detachably assembled and connected in the assembling area; and the connecting piece is provided with a second through hole communicated with the connecting through hole, and the PCB wiring terminal has screw pitches with different lengths through the connecting piece, so that the use scene of the PCB wiring terminal is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of power electronic equipment especially relates to a PCB terminal suitable for printed circuit board. BACKGROUND

[0002] PCB terminal can connect PCB board and external equipment, realize the input and output of signal. For example, on a computer motherboard, through the terminal, USB interface, audio interface and the like can be connected to the circuit of the motherboard. Therefore, the terminal is an indispensable electronic component in the field, and the terminal has always occupied an important position in the electronic industry, and has become an important part of the printed circuit board.

[0003] Generally, the terminal for PCB board is welded on one end of the PCB board, and the other end is connected by screwing. However, the screwing requires thread cooperation, but the screwing method makes the connection between the wire and the PCB terminal loose.

[0004] To this end, the publication number CN207938851 U discloses a PCB terminal, which comprises: a top plate, the top plate is provided with a connecting hole; the top plate has an upper surface and a lower surface opposite to each other; two opposite side walls; two side walls are located on both sides of the top plate; each side wall is provided with a pin at the end away from the top plate; a connecting piece fixed to the lower surface of the top plate; the connecting piece is provided with a threaded hole communicated with the connecting hole. The connecting hole and the threaded hole are coaxially arranged; the length of the threaded hole is greater than the length of the connecting hole. The PCB terminal can avoid pulling teeth or tapping teeth on the copper sheet of the terminal, avoid thread falling off and failure, ensure the fixing effect of the screw, ensure the reliable connection of the PCB terminal and the connecting line terminal, and improve the current carrying capacity between the PCB terminal and the connecting line terminal.

[0005] Although this technology has made progress, the pitch of this kind of PCB terminal is increased by thickening the body of the PCB terminal, and the pitch is fixed, which makes the application scene of this kind of PCB terminal very single, especially in some shell with relatively small internal space, this kind of PCB terminal with too long pitch is not suitable.

[0006] Therefore, the above technical problems need to be solved. UTILITY MODEL CONTENT

[0007] In order to overcome the shortcomings of the prior art, the utility model provides a PCB terminal, which aims at solving the problems of unadjustable pitch of the existing PCB terminal and single use scene.

[0008] In order to solve the above technical problems, the utility model provides a basic technical scheme:

[0009] A PCB terminal, comprising a terminal body, the terminal body comprising a top plate, the opposite sides of the top plate extending longitudinally with side plates, two side plates and the top plate enclosing an assembly area;

[0010] Each side plate has a welding pin at one end away from the top plate, the welding pin is used for connecting the PCB;

[0011] The top plate has a connecting through hole, and the connecting through hole is used for connecting with external accessories;

[0012] The assembly area is detachably connected with a connecting piece;

[0013] The connecting piece has a second through hole communicated with the connecting through hole.

[0014] Further, the detachable assembly connection comprises a nested structure;

[0015] The nested structure comprises a through hole for assembling the connecting piece;

[0016] The through hole is arranged on the side plate;

[0017] The position corresponding to the assembly of the connecting piece and the through hole has an insertion block;

[0018] The insertion block is assembled with the through hole in interference.

[0019] Further, the through holes on different side plates are symmetrically arranged.

[0020] Further, the insertion block from the through hole towards the assembly area side enters from the through hole towards the outside side.

[0021] Further, the detachable assembly connection comprises a concave-convex structure;

[0022] The concave-convex structure comprises a groove arranged on each side plate and a convex block on the connecting piece corresponding to each groove;

[0023] The convex block is clamped into the groove to realize the assembly of the connecting piece in the assembly area.

[0024] Further, the upper surface of the connecting piece and the inner surface of the top plate are surface-to-surface contact.

[0025] Further, the connecting through hole and the second through hole are cylindrical holes;

[0026] The hole height of the second through hole is higher than the hole height of the connecting through hole.

[0027] Further, the connecting through hole and the second through hole are respectively provided with internal threads.

[0028] The internal threads are used for assembling the external fittings.

[0029] Further, the hole diameter of the second through hole is equal to the hole diameter of the connecting through hole.

[0030] Further, at least one welding pin is arranged on each side plate.

[0031] The PCB terminal of the utility model has the advantages of:

[0032] The utility model discloses a kind of PCB terminal, including terminal main body, terminal main body includes top plate, opposite two sides of the top plate extend longitudinally with side plate, two The side plate and the top plate are enclosed to form an assembly area;Every The side plate has welding pin at one end away from the top plate, and the welding pin is used to connect PCB;The top plate has connecting through hole, and the connecting through hole is used to be connected with external fittings;The assembly area is detachably assembled and connected with a connecting piece;The connecting piece has second through hole with the connecting through hole.The PCB terminal of the present technical solution not only can make PCB and external device obtain connection, and its pitch can be adjusted, and different connecting pieces can be matched according to actual use scene to obtain applicable application scene pitch. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is the overall structure schematic diagram of the embodiment one of the utility model;

[0034] Figure 2 It is the structure schematic diagram of the embodiment one of the utility model and is assembled with connecting piece;

[0035] Figure 3 It is one kind of structure schematic diagram of the connecting piece of the utility model;

[0036] Figure 4 It is one kind of structure schematic diagram of the utility model and is detachably assembled and connected;

[0037] Figure 5 It is another kind of structure schematic diagram of the utility model and is detachably assembled and connected

[0038] Mark explanation:

[0039] 1-terminal body, 11-top plate, 111-connecting through hole, 12-side plate, 13-assembly area, 14-welding pin, 2-connector, 21-first through hole, 22-insertion block, 23-groove, 3-detachable assembly connection, 31-nested structure, 32-concave-convex structure, 311-through hole, 322-bump. DETAILED DESCRIPTION

[0040] The following will be combined with the Figure 1 To the attached Figure 5 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0041] It should be noted that if there are any directions involved in the embodiments of the present invention, they shall be based on the directions shown in the drawings, such as front and back. Figure 1 The specific Figure 1 The left side is the front, Figure 1 The right side is the back; at the same time Figure 2 As shown in the figure, the left-right direction is roughly the horizontal direction, and the up-down direction shown in the figure is the vertical direction. If a specific posture changes, the directional indication will also change accordingly.

[0042] PCB terminal blocks are used in many electronic devices, including mobile phones, tablets, and laptops. For example, small PCB terminal blocks are often used to connect various sensors (such as light sensors and proximity sensors) on a mobile phone's motherboard to the motherboard, as well as to connect the battery to the motherboard, to facilitate signal transmission and power supply. These terminals must meet the requirements of miniaturization and high reliability to adapt to the trend of thinner and more portable consumer electronics.

[0043] Existing PCB terminal blocks typically use a self-clinching nut structure, which is the most expensive. After the terminal block is formed, a hard stainless steel nut is press-riveted into the terminal block to provide thread strength. Alternatively, a composite riveting structure is used, but mold production is complex and expensive. A single-step mold requires six steps to produce a finished product, which not only increases mold costs but also increases labor costs. Continuous molds are even more expensive, with complex mold design and production, and require material feed from two directions. Alternatively, a flanging and tapping structure is used, which is relatively inexpensive but also offers the lowest thread strength. Stamping the flanging also poses a risk of cracking.

[0044] The structure of the PCB terminal described above brings bad experience in production and actual use.

[0045] To this end, the present inventors provide a PCB terminal that, by being combined with a detachable connecting piece, can be stably connected when the screw is pressed, and can also be matched with connecting pieces of different thicknesses according to different use scenarios to change the screw pitch to adapt to the use of housings of different sizes.

[0046] As Figure 1 shown, the technical solution of the PCB terminal comprises a terminal body 1, which comprises a top plate 11 that is a rectangle or a rectangle in the orthographic projection direction. A connecting through hole 111 is provided on the top plate 11, which is used for screw connection with external accessories.

[0047] The opposite sides of the top plate 11 extend longitudinally with side plates 12, which are connected with the top plate 11 by bending and are integrally formed. In some use scenarios, the length of the side plate 12 is specifically set according to the actual use scenario.

[0048] The two side plates and the top plate 11 enclose an assembly area 13 with two open sides, and the other two sides are blocked by the side plates 12. The assembly area 13 is located below the top plate 11.

[0049] At least one soldering pin 14 is arranged at the end of each side plate 12 away from the top plate, i.e. the soldering pin 14 comprises a plurality of soldering pins according to the actual use scenario, the number of soldering pins 14 on each side plate 12 can be equal or unequal, and the soldering pins 14 on each side plate 12 can be symmetrically arranged or asymmetrically arranged. In summary, the position and number of the soldering pins 14 can be set according to the actual use scenario. The soldering pin is used to connect the PCB, the top plate 11 has a connecting through hole 111 with internal threads, and the connecting through hole 111 is used to connect with external accessories such as bolts. In actual use, the bolt is connected with the wire with various functions such as audio and display, and then the external threads on the surface of the bolt are matched with the internal threads, so as to realize the electrical connection between the PCB and the audio, display and other functional devices.

[0050] It should be noted that, as Figure 2As shown, the assembly area 13 is detachably assembled with a connecting piece 2; the connecting piece 2 has a second through hole 21 communicating with the connecting through hole. The second through hole 21 is below the connecting through hole 111 and cooperates with the connecting through hole 111 to increase the pitch length of the PCB terminal. In actual use, the connecting piece 2 includes metal or plastic materials, and the connecting piece 2 can have different thicknesses according to actual use. The purpose of the connecting piece 2 is to adjust the pitch of the PCB terminal.

[0051] Further, the connecting through hole 111 and the second through hole 21 are cylindrical holes; the connecting through hole 111 and the second through hole 21 have internal threads respectively; the internal threads are used to assemble the external fittings. It should be noted that the design of the cylindrical hole is to better match the assembly of the external fittings. In this embodiment, the external fittings are bolts. And the hole diameter of the second through hole 21 is equal to the hole diameter of the connecting through hole 111, which facilitates the assembly and firm connection of the bolt.

[0052] In an embodiment, as shown in Figure 3 The hole height of the second through hole 21 is higher than the hole height of the connecting through hole 111. Such design is to lengthen the pitch of the PCB terminal, which can make the assembly and connection of the PCB terminal and the bolt more firm.

[0053] Of course, it is not limited that the hole height of the second through hole 21 is higher than the hole height of the connecting through hole 111. In another embodiment, as shown in Figure 4 It also includes the use case that the hole height of the second through hole 21 is equal to the hole height of the connecting through hole 111. Such design also lengthens the pitch of the PCB terminal, which makes the assembly and connection of the PCB terminal and the bolt more firm.

[0054] The connecting piece 2 is detachably assembled with the PCB terminal. One of the ways of the detachable assembly 3 is as shown in Figure 3 and Figure 4 The connecting piece 2 and the PCB terminal are a nested structure 31. Specifically, the nested structure 31 includes a through hole 311 for assembling the connecting piece; the through hole 311 is arranged on the side plate 12; the through holes 311 on different side plates 12 are symmetrically arranged. The through hole 311 enables the assembly area 13 to communicate with the external connection in the direction blocked by the two side plates 12.

[0055] The position where the connecting piece 2 corresponds to the assembly of the through hole 311 has an insertion block 22; the insertion block 22 is assembled with the through hole 311 in interference.

[0056] In the assembly, the connecting piece 2 enters the interior of the assembly area 13 from the opening C, and then the insertion block 22 is inserted into the through hole 311. In the embodiment, each side plate 12 has the through hole 311, and preferably, the through holes 311 in different side plates 12 are symmetrically arranged, and the number of the insertion blocks 22 is matched with the number of the through holes 311.

[0057] It should be understood that the design is to enable the connecting piece 2 to be stably connected after the connecting piece 2 is assembled in the assembly area 13, so as to avoid the problems of falling and shaking of the connecting piece 2 during use.

[0058] In the specific assembly, the insertion block 22 enters from the side of the through hole 311 towards the assembly area 13 to the side of the through hole 311 towards the outside. It should be understood that the design facilitates the user to press inward from the exposed part of the connecting piece 2 to disassemble the connecting piece 2 from the assembly area 13.

[0059] In another utility model embodiment, as shown in Figure 5 the detachable assembly connection 3 has another assembly mode, that is, Figure 5 as shown in the figure, the assembly mode includes the concave-convex structure 32; the concave-convex structure 32 includes the groove 321 provided on each side plate 12 and the convex block 322 on the connecting piece 2 corresponding to each groove 321; the convex block 322 is clamped into the groove 321 to realize the assembly of the connecting piece 2 in the assembly area 13.

[0060] In the assembly, the connecting piece 2 enters the assembly area 13 from the opening C, and then the insertion block 22 is inserted into the through hole 311. In the embodiment, each side plate 12 has the through hole 311, and preferably, the through holes 311 in different side plates 12 are symmetrically arranged, and the number of the insertion blocks 22 is matched with the number of the through holes 311.

[0061] In a utility model embodiment, the upper surface of the connecting piece 2 and the inner surface of the top plate 11 are surface-to-surface contact.

[0062] It should be understood that when the PCB terminal is assembled with a bolt, the bolt is connected with a wire, and under the influence of current, the connection between the bolt and the PCB terminal is prone to loosening, resulting in ineffective electrical connection. To this end, the upper surface of the connecting piece 2 and the inner surface of the top plate 11 are in surface-to-surface contact, which helps to increase the pitch of the bolt and the PCB terminal, so that the connection between the bolt and the PCB terminal is more secure.

[0063] In another embodiment, the upper surface of the connecting piece 2 and the inner surface of the top plate 11 are not in surface-to-surface contact, and the upper surface of the connecting piece 2 and the inner surface of the top plate 11 have a certain spacing distance as seen in the longitudinal section of the PCB terminal. When the bolt passes through the connecting hole 111 and the second hole 21 in sequence, the connecting hole 111 and the second hole 21 realize multi-fixing of the bolt in the length direction of the bolt, so as to solve the problem that the bolt is prone to falling off the PCB terminal.

[0064] In summary, the PCB terminal of the technical solution increases the pitch of the original PCB terminal by detachably assembling a connecting piece 2, increases the contact area between the PCB terminal and the bolt, and makes the connection between the bolt and the PCB terminal more secure after assembling the bolt, thereby avoiding loosening of the connection between the bolt and the PCB terminal during use and effectively solving the problem that the pitch of the PCB terminal in the prior art is fixed and the use scene is single.

[0065] According to the disclosure and teaching of the above description, those skilled in the art of the present application can also make changes and modifications to the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of explanation and do not constitute any limitation on the present application.

Claims

1. A PCB terminal, comprising a terminal body, characterized in that: the terminal body comprises a top plate, opposite sides of the top plate extend longitudinally with side plates, and the two side plates and the top plate enclose an assembly area; each side plate has a soldering pin at an end away from the top plate, and the soldering pin is used to connect a PCB; the top plate has a connecting through hole for connecting with an external accessory; a connecting piece is detachably assembled and connected in the assembly area; the connecting piece has a second through hole communicating with the connecting through hole. 2.The PCB terminal of claim 1, characterized in that: the detachable assembly and connection comprises a nesting structure; the nesting structure comprises a through hole for assembling the connecting piece; the through hole is arranged on the side plate; the position where the connecting piece is assembled in correspondence with the through hole has an insertion block; the insertion block is assembled with the through hole in interference. 3.The PCB terminal of claim 2, characterized in that: the through holes on different side plates are symmetrically arranged. 4.The PCB terminal of claim 2, characterized in that: the insertion block is exposed from a side of the through hole facing the assembly area to a side of the through hole facing outward. 5.The PCB terminal of claim 1, characterized in that: the detachable assembly and connection comprises a concave-convex structure; the concave-convex structure comprises a groove arranged on each side plate and a convex block on the connecting piece assembled in correspondence with each groove; the convex block is clamped into the groove to achieve assembly of the connecting piece in the assembly area.

6. A PCB terminal according to claim 1, wherein: the upper surface of the connecting piece and the inner surface of the top plate are surface-to-surface contact. 7.The PCB terminal of claim 1, characterized in that: the connecting through hole and the second through hole are cylindrical holes; the hole height of the second through hole is higher than the hole height of the connecting through hole. 8.The PCB terminal of claim 7, characterized in that: the connecting through hole and the second through hole respectively have internal threads; the internal threads are used to assemble the external accessory. 9.The PCB terminal of claim 7, characterized in that: the hole diameter of the second through hole is equal to the hole diameter of the connecting through hole.

10. A PCB terminal according to any one of claims 1-9, characterized in that: at least one soldering pin is arranged on each side plate.

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