Fixed wiring terminal of PCB (Printed Circuit Board)

Abstract

The utility model relates to the field of power electronic equipment, in particular to a PCB (Printed Circuit Board) fixed wiring terminal, which comprises a wiring terminal main body, the wiring terminal main body comprises a top plate, and the top plate is provided with a connecting through hole; the top plate is provided with an upper surface and a lower surface which are back to back; the upper surface is provided with a clamping part which longitudinally and upwards protrudes out of the top plate, and the clamping part is detachably connected with a first gasket; the first gasket is provided with a first auxiliary fixing hole, and the first auxiliary fixing hole is right opposite to the connecting through hole. According to the PCB wiring terminal, the first gasket is additionally arranged on the top plate, the first gasket is provided with the first auxiliary fixing hole right opposite to the connecting through hole, and the screw pitches of the two holes are increased, so that the fixation of the bolt and the PCB wiring terminal is realized, and the problems that the screw pitch of the connecting part of the threaded hole and the bolt of the existing PCB wiring terminal is not long enough and the screw pitch is not long enough are solved. And the connection part of the bolt and the threaded hole is easy to loosen.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of power electronic equipment especially relates to a PCB board fixed wiring terminal. BACKGROUND

[0002] In the early stage of electronic technology development, the connection between circuits mainly relies on the direct welding of wires. This method can meet the needs in simple circuits, but with the increase of the complexity of electronic devices, its limitations become increasingly evident. For example, on a circuit board containing multiple electronic components, a large number of directly welded wires make the circuit board look messy, which not only increases the difficulty of circuit inspection and troubleshooting, but also occupies valuable space in the limited circuit board space, limiting the layout of electronic components and the process of device miniaturization.

[0003] At the same time, the connection method of directly welding wires is very inconvenient when components need to be frequently replaced or circuit debugging is performed. Each time a component is replaced, the wires need to be re-welded or removed, which is easy to damage the circuit board and components, and the process is inefficient.

[0004] To this end, the publication number CN 218975818 U discloses a wiring terminal for a PCB, which includes a wiring terminal including a plug-in part and a wiring part; the plug-in part is used to connect the PCB, and the wiring part is used to connect with the wire; the surface of the wiring part is provided with a threaded hole, and the threaded hole is matched with a bolt to connect and fix the wire, thereby solving the problem that the solder joint is prone to fatigue fracture in the long-term vibration environment under the traditional soldering connection method.

[0005] Although this technology has made progress, the pitch of the threaded hole and the bolt connection is not long enough, resulting in the connection between the bolt and the threaded hole being prone to looseness.

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

[0007] In order to overcome the shortcomings of the prior art, the utility model provides a PCB board fixed wiring terminal, which aims to solve the problem that the pitch of the existing PCB board wiring terminal is not long enough, resulting in the connection between the bolt and the threaded hole being prone to looseness.

[0008] In order to solve the above technical problems, the basic technical scheme of the utility model is as follows:

[0009] A PCB board fixed wiring terminal, comprising a wiring terminal main body, the wiring terminal main body comprising a top plate, the top plate being provided with a connecting through hole;

[0010] The top plate has an upper surface and a lower surface facing away from each other;

[0011] The upper surface is provided with a clamping portion protruding upward in the longitudinal direction of the top plate, and the clamping portion is detachably connected with a first gasket;

[0012] The first gasket is provided with a first auxiliary fixing hole which is opposite to the connecting through hole;

[0013] The opposite sides of the top plate are longitudinally extended with side plates, and each side plate is provided with a welding leg at an end away from the top plate.

[0014] Further, the clamping portion has at least two;

[0015] Each clamping portion is located at a corner position of the top plate.

[0016] Further, the top plate has four corner positions;

[0017] Each corner position is provided with the clamping portion.

[0018] Further, each clamping portion located at each corner position and the upper surface of the top plate enclose a first assembly area for assembling the first gasket.

[0019] Further, the opposite sides of the top plate are longitudinally extended with side plates, and the two side plates and the lower surface of the top plate enclose a second assembly area.

[0020] Further, a second gasket is included and arranged in the second assembly area.

[0021] Further, the second gasket is provided with a second auxiliary fixing hole which is communicated with the connecting through hole.

[0022] Further, the second gasket is provided with a clamping protrusion;

[0023] The side plate matched with the clamping protrusion is provided with a through hole;

[0024] The clamping protrusion is inserted into the through hole to fix the second gasket in the second assembly area.

[0025] Further, the connecting through hole, the first auxiliary fixing hole and the second auxiliary fixing hole are coaxially arranged.

[0026] Further, each side plate is provided with a welding leg at an end away from the top plate, and the welding leg has at least two.

[0027] The utility model discloses the beneficial effect is:

[0028] The utility model discloses a kind of PCB fixed wiring terminals, by increasing first gasket on the top plate, first gasket has the same first auxiliary fixing hole with the connecting through hole, the pitch of two holes is increased, to increase the pitch of bolt cooperation, to further fixed bolt and the wiring terminal of this PCB are realized.Specifically, the PCB fixed wiring terminal includes wiring terminal body, the wiring terminal body includes top plate, the top plate is equipped with connecting through hole;The top plate has upper surface and lower surface opposite to each other;The upper surface is equipped with the clamping portion projecting upward in the top plate, the clamping portion is detachably connected with first gasket;The first gasket has first auxiliary fixing hole, and the first auxiliary fixing hole is opposite to the connecting through hole;The opposite two sides of the top plate extend with side plate longitudinally, and one end of each side plate away from the top plate is equipped with solder leg, to solve the problem that the pitch of bolt and thread hole is too short in the PCB fixed wiring terminal of prior art, and the connection is prone to looseness. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is the overall structure schematic view of the embodiment one of the utility model;

[0030] Figure 2 It is the structure schematic view of the second gasket of the embodiment one of the utility model;

[0031] Figure 3 It is the structure schematic view of another clamping portion layout of the utility model;

[0032] Figure 4 It is the structure schematic view of the second gasket of the utility model;

[0033] BRIEF DESCRIPTION OF DRAWINGS

[0034] 1-top plate, 11-upper surface, 12-lower surface, 13-connecting through hole, 131-internal thread, 14-angle position, 3-first gasket, 31-first auxiliary fixing hole, 4-first assembly area, 5-side plate, 51-Through hole, 6-second assembly area, 7-solder leg, 8-second gasket, 81-second auxiliary fixing hole, 82-clamping protruding piece. DETAILED DESCRIPTION

[0035] The following will be combined with attached Figure 1 to attached Figure 4 The technical scheme in the embodiment of the utility model is clearly and completely described, obviously, the described embodiment is only a part of the embodiment of the utility model, not all embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of the utility model protection.

[0036] The PCB terminal in the prior art is welded on the PCB, and then a conductive wire is assembled on the threaded hole of the PCB terminal, thereby indirectly connecting the conductive wire and the PCB. Although this kind of technology solves the problem that the wire is directly welded on the PCB, which not only affects the appearance but also is very inconvenient when the elements need to be frequently replaced or the circuit is debugged.

[0037] However, the threaded hole of the PCB terminal in the prior art is prone to loosening at the joint of the wire and the threaded hole due to insufficient thread pitch under long-term current stimulation vibration.

[0038] To this end, the present inventor provides a PCB fixed terminal, which can increase the thread pitch of the threaded hole, effectively fix the connection of the wire and the threaded hole, and prevent the wire from falling off the PCB.

[0039] In detail, as shown in the technical scheme of the present application, Figures 1 to 2 The PCB fixed terminal of the present application preferably adopts a metal material such as copper that is easy to conduct electricity. The PCB fixed terminal comprises a terminal body, which comprises a top plate 1 having an upper surface 11 and a lower surface 12 opposite to each other. The top plate 1 is provided with a connecting through hole 13. The connecting through hole 13 penetrates from the upper surface 11 to the lower surface 12, and is formed by a mold. The connecting through hole 13 has an internal thread 131 for screwing a bolt, and the bolt can bind different types of wires. The wires are used for electrically connecting external devices (such as a sound box, a remote controller, etc.), and are used for indirectly connecting the PCB and different types of devices.

[0040] The upper surface 11 is provided with a clamping portion 2 protruding upward from the top plate in a longitudinal direction. The clamping portion 2 is integrally connected with the top plate 1. The clamping portion 2 is a block structure or a protruding structure fixed on the top plate 1. The clamping portion 2 is detachably provided with a first gasket 3. The first gasket 3 is fixed by the clamping portion 2, so as to achieve detachable connection of the first gasket 3 and replacement of the first gasket 3.

[0041] In detail, in an embodiment of the present application, the first gasket 3 can also be replaced with a gasket having a different thread pitch according to actual use needs. For example, in a use scenario requiring a longer thread pitch, a first gasket 3 with a greater thickness is used. In a use scenario requiring a shorter thread pitch, a first gasket 3 with a smaller thickness is used. Therefore, the detachable connection of the clamping portion 2 and the first gasket 3 facilitates replacement of the first gasket 3.

[0042] The first gasket 3 has a first auxiliary fixing hole 31, the clamping portion 2 limits the first gasket 3 on the upper surface 11 of the top plate 1, so that the lower surface of the first gasket 3 is in contact with the upper surface 11 of the top plate 1, so that the first auxiliary fixing hole 31 is opposite to the connecting through hole 13. It should be understood that the first auxiliary fixing hole 31 is opposite to the connecting through hole 13, which is convenient for bolt insertion and avoids bolt skewing during insertion.

[0043] In use, the bolt of the external device can pass through the connecting through hole 13 and the first auxiliary fixing hole 31 in sequence. Since the first auxiliary fixing hole 31 increases the thread pitch of the original connecting through hole 13, that is, the contact area between the bolt body surface and the inner wall surface of the connecting through hole 13 and the first auxiliary fixing hole 31 is increased, thereby increasing the thread pitch of the bolt at the connection between the bolt and the PCB terminal. Therefore, the combination of the first gasket 3 and the top plate 1 can effectively solve the problem that the thread pitch of the bolt fixed by the top plate of the PCB terminal is too short in the prior art, and the connection between the bolt and the PCB is prone to looseness during long-term use.

[0044] In an embodiment of the present application, the hole diameter of the connecting through hole 13 is equal to the hole diameter of the first auxiliary fixing hole 31. In this way, when the bolt is inserted into the first auxiliary fixing hole 31 from the connecting through hole 13, the connection between the bolt and the first auxiliary fixing hole 31 and the connecting through hole 13 can be more tightly connected to avoid poor contact.

[0045] The top plate 1 extends longitudinally on opposite sides of the top plate 1, and each side plate 5 is provided with a welding leg 7 away from the top plate 5. The welding leg 7 is used for welding with the PCB, so that the PCB terminal is fixed on the PCB.

[0046] In an embodiment of the present application, further, the welding leg 7 provided at the end of each side plate 5 away from the top plate has at least two, so as to be better fixed by welding with the PCB. According to the actual use scene, the welding leg 7 is not limited to two, but can also include three, four, etc.

[0047] In an embodiment of the present application, as shown in Figure 3 The clamping portion 2 has at least two; each clamping portion 2 is located at the corner position 14 of the top plate 1. Different clamping portions 2 can be located in the same side of the corner position 14, preferably, located on the two corner positions 14 connected by the diagonal line of the top plate 1.

[0048] It should be understood that, as shown in Figure 3As shown, when the first gasket 3 is placed on the two corner positions 14 connected by diagonals of the top plate 1, the two ends of the first gasket 3 connected by diagonals are limited on the two corner positions 14 connected by diagonals, so that the first gasket 3 can be constrained on the upper surface 11 of the top plate 1 and cannot fall off from the top plate 1, so that the first gasket 3 is not easy to shake when the pitch of the bolt and the PCB fixing terminal is increased, thereby affecting the use experience.

[0049] In an embodiment of the utility model, still as shown Figure 2 As shown, the top plate 1 has four corner positions 14; Each corner position 14 has the clamping part 2. In this embodiment, the clamping part 2 at the four corner positions 14 can better constrain the first gasket 3 on the upper surface 11 of the top plate 1, so that the first gasket 3 is not easy to shake and fall off from the top plate 1 when being inserted by the bolt. That is to say, when each corner position 14 has the clamping part 2, each clamping part 2 can stably constrain the first gasket 3 assembled in the first assembly area 4, that is, so that the force received at the connection of the first gasket 3 and each clamping part 2 is equal, thereby avoiding the shaking of the first gasket 3 in the first assembly area 4. Further, the problem that the connection of the bolt and the connecting through hole 13 and the first auxiliary fixing hole 31 is easy to shake is avoided.

[0050] Further, in this embodiment, the clamping part 2 at the four corner positions 14 combines the first assembly area 4 enclosed by the top plate 1, that is, each clamping part 2 at each corner position 14 and the upper surface 11 of the top plate 1 enclose the first assembly area 4, and the first assembly area 4 is used for assembling the first gasket 3. It should be understood that the first assembly area 4 helps to fix the first gasket 3 and also avoids the external physical damage of the first gasket 3.

[0051] In an embodiment of the utility model, as shown Figure 4 As shown, the top plate 1 has two side plates 5 extending longitudinally on opposite sides, and the two side plates 5 and the lower surface of the top plate 1 enclose a second assembly area 6. The PCB fixing terminal comprises a second gasket 8, and the second gasket 8 is arranged in the second assembly area 6.

[0052] It should be understood that, thus designed, when the pitch of the PCB fixed terminal is not enough, the second gasket 8 can be connected under the lower surface 2 of the top plate 1, and the second gasket 8 is used to further increase the pitch of the PCB fixed terminal. And the second gasket 8 is arranged in the second assembly area 6, which is beneficial to avoid the second gasket 8 from falling off from the second assembly area 6, and the second gasket 8 can be further fixed.

[0053] In further detail, the second gasket 8 has a second auxiliary fixing hole 81, and the second auxiliary fixing hole 81 is opposite to the connecting through hole 13.

[0054] It should be understood that, by arranging the second auxiliary fixing hole 81 opposite to the connecting through hole 13, when the bolt is connected, the bolt can pass through the connecting through hole 13 in sequence and be inserted into the second auxiliary fixing hole 81, so as to avoid the assembly of the bolt being inclined during assembly, and to avoid the problem of poor contact at the connection.

[0055] In an embodiment of the utility model, further, the connecting through hole 113, the first auxiliary fixing hole 31 and the second auxiliary fixing hole 81 are coaxially arranged. And each hole is correspondingly provided with an internal thread. Thus designed, the bolt can pass through the connecting through hole 13, the first auxiliary fixing hole 31 in sequence and be inserted into the second auxiliary fixing hole 81, so as to avoid the bolt being inclined during the whole insertion process, and to avoid the problem of poor contact at the connection between the bolt and the PCB fixed terminal.

[0056] In an embodiment of the utility model, the second gasket 8 has a clamping protruding piece 82; the side plate 1 matched with the clamping protruding piece 82 has a through hole 51; and the clamping protruding piece 82 is inserted into the through hole 51 to fix the second gasket 8 in the second assembly area 6.

[0057] Thus designed, the second gasket 8 can be assembled and disassembled from the second assembly area 6. When the second gasket 8 needs to be replaced, such as the second gasket 8 with different shapes and thicknesses, the clamping protruding piece 82 can be extruded in the direction of the inside of the second assembly area 6 by external force to make the clamping protruding piece 82 fall off from the through hole 51, so as to realize the replacement of the second gasket 8.

[0058] In summary, when the bolt is assembled with the PCB fixed terminal, the contact pitch of the bolt and the whole PCB fixed terminal is increased under the cooperation of the second gasket 8, the top plate 1 and the first gasket 3, so as to effectively avoid the problem that the bolt is easily loose at the connection between the bolt and the PCB fixed terminal under long-term current stimulation, and the bolt is caused to fall off.

[0059] According to the disclosure and teaching of the above description, the skilled in the art of the present application can also change and modify 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 also 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 description and do not constitute any limitation on the present application.

Claims

1.A PCB board fixing terminal comprising a terminal body, characterized in that: the terminal body comprises a top plate, the top plate is provided with a connecting through hole; the top plate has an upper surface and a lower surface facing away from each other; the upper surface is provided with a clamping portion protruding upwardly from the top plate, the clamping portion is detachably connected with a first gasket; the first gasket has a first auxiliary fixing hole, the first auxiliary fixing hole is opposite to the connecting through hole; the top plate is longitudinally extended with side plates on two opposite sides, each side plate is provided with a soldering leg at an end away from the top plate. 2.The PCB board fixing terminal according to claim 1, characterized in that: the clamping portion has at least two; each clamping portion is located at a corner position of the top plate. 3.The PCB board fixing terminal according to claim 1, characterized in that: the top plate has four corner positions; each corner position is provided with the clamping portion. 4.The PCB board fixing terminal according to claim 3, characterized in that: each clamping portion at each corner position and the upper surface of the top plate enclose a first assembly area, the first assembly area is used for assembling the first gasket. 5.The PCB board fixing terminal according to claim 1, characterized in that: the top plate is longitudinally extended with side plates on two opposite sides, the two side plates and the lower surface of the top plate enclose a second assembly area. 6.The PCB board fixing terminal according to claim 5, characterized in that: a second gasket is arranged in the second assembly area. 7.The PCB board fixing terminal according to claim 6, characterized in that: the second gasket has a second auxiliary fixing hole, the second auxiliary fixing hole is opposite to the connecting through hole. 8.The PCB board fixing terminal according to claim 6, characterized in that: the second gasket has a clamping protrusion; the side plate matched with the clamping protrusion has a through hole; the clamping protrusion is inserted into the through hole to fix the second gasket in the second assembly area. 9.The PCB board fixing terminal according to claim 7, characterized in that: the connecting through hole, the first auxiliary fixing hole and the second auxiliary fixing hole are coaxially arranged. 10.The PCB board fixing terminal according to any one of claims 1-9, characterized in that: each side plate is provided with at least two soldering legs at an end away from the top plate.

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