Multi-contact conduction type conductive terminal of terminal block
By designing a multi-contact structure on the conductive terminals of the terminal table for wiring, including the crimping wall and the inclined crimping surface, the problem of limited contact points in the prior art is solved, and the current flow capacity and performance stability are improved.
Patent Information
- Application Number
- CN202410543938.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-10-08
- Filing Date
- 2024-04-30
- Publication Date
- 2025-04-15
AI Technical Summary
When the conductive terminals of the existing terminals for wiring contact the conductors, the contact points are limited, resulting in poor current flow capacity and poor performance stability.
A multi-contact conduction type conductive terminal is designed, and multiple contact points are formed by providing a crimping wall, a conductive contact wall and a bending sheet on the conductive terminal, including a conductive contact surface, a crimping wall and an inclined crimping surface to ensure multi-point contact between the conductor and the conductive terminal.
It effectively increases the contact point between the conductive terminal and the wire, improves the current flow capacity and performance stability after wiring, and makes the wiring of the wire more stable.
Smart Images
Figure CN119833983A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a connector, and in particular to a multi-contact conductive terminal of a terminal block. Background Art
[0002] The current structure of the wiring terminal block is as follows Figures 1 to 3 The conductive terminal shown in the figure forms a conductive contact surface 21, and the elastic force of the spring sheet S of the cantilever structure and the conductive contact surface 21 together clamp the hard stranded wire of the conductor 8. Since the hard stranded wire of the conductor 8 cannot be an absolutely straight structure parallel to the conductive contact surface 21 of the conductive terminal, when the hard stranded wire of the conductor 8 contacts the planar conductive contact surface 21, there are at most two contact points, or even only one contact point (such as Figure 1 As shown, there are a first contact point 81 and a second contact point 82 between the wire 8 and the conductive contact surface 21, which results in poor current flow capacity and poor stability of wiring performance after wiring. Summary of the invention
[0003] The purpose of the present application is to provide a multi-contact conductive terminal for a terminal block, which can effectively increase the contact points between the conductive terminal and the wire, improve the current conduction capacity of the terminal block after wiring, and also improve the performance stability of the terminal block.
[0004] In order to achieve the above-mentioned purpose, the present application provides a multi-contact conductive terminal of a terminal block, which is used for electrically connecting with a wire, wherein the conductive terminal includes: a terminal body; a conductive contact wall, which is fixedly arranged on the terminal body, and a conductive contact surface for supporting the wire is formed on the conductive contact wall, and the conductive contact surface contacts one side surface of the wire; and a wire pressing wall, which is fixedly arranged on the terminal body, and the wire pressing wall can tightly contact the other side surface of the wire located on the conductive contact surface, and the other side surface and the one side surface are opposite to each other.
[0005] As a further improvement of the present application, an inclined wire pressing surface is formed on the wire pressing wall, an acute angle is formed between the inclined wire pressing surface and the conductive contact surface, and a wire passing channel is also formed between the inclined wire pressing surface and the conductive contact surface, the wire passing channel has an input end and an output end, and the wire passing channel is formed into a trumpet shape due to the gap at the input end being larger than the gap at the output end, and the gap at the output end is less than or equal to the diameter of the wire, and the gap at the input end is larger than the diameter of the wire.
[0006] As a further improvement of the present application, the wire pressing wall and the conductive contact wall are bent sheets arranged at intervals on the terminal body.
[0007] As a further improvement of the present application, a first bending portion is provided between the terminal body and the conductive contact wall, and a second bending portion is provided between the terminal body and the wire pressing wall.
[0008] As a further improvement of the present application, the terminal body is extended with a side protrusion, the side protrusion has a bevel, the bevel is inclined relative to the conductive contact wall, and the wire pressing wall is connected to the bevel and is inclined accordingly.
[0009] As a further improvement of the present application, the wire pressing walls are inclined relative to the conductive contact walls and are spaced apart from each other.
[0010] Compared with the previous technology, the present application has the following effects: by forming a wire pressing wall on the conductive terminal, the upper side surface of the wire on the conductive contact surface is contacted, and by arranging a first wire bundling protrusion and a second wire bundling protrusion on the conductive contact surface, and the first inclined surface on the first wire bundling protrusion and the second inclined surface on the second wire bundling protrusion support the side surface of the end section of the wire along the wire feeding direction, and at the same time, the upper side surface of the end of the wire is pressed by the wire pressing wall, so that the contact points between the wire and the conductive terminal are effectively increased, which greatly improves the current flow capacity of the terminal block for wiring after wiring, and also improves the performance stability of the terminal block, making the wiring of the wire more stable. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is the wiring schematic diagram of the terminal block for wiring; Figure 2 It is a three-dimensional diagram of a terminal block in the prior art; Figure 3 It is a three-dimensional diagram of a conductive terminal in the prior art; Figure 4 This is a first stereoscopic diagram of a first structure of the conductive terminal of the present application; Figure 5 This is the second stereogram of the first structure of the present application; Figure 6 A three-dimensional diagram of a conductive terminal of the first structure of the present application; Figure 7 A three-dimensional diagram of a conductive terminal of the second structure of the present application; Figure 8 A three-dimensional diagram of the contact state between the conductive terminal and the conductive wire of the second structure of the present application; Fig. 9 A front view of the conductive terminal of the second structure of the present application in contact with the wire; Fig.10 A three-dimensional diagram of a conductive terminal of the third structure of the present application; Fig.11 A front view of a conductive terminal of a third structure of the present application; Fig.12 This is a three-dimensional diagram of a conductive terminal of the fourth structure of the present application; Fig.13 A front view of a conductive terminal of a fourth structure of the present application; Fig.14 A three-dimensional diagram of the contact state between the conductive terminal and the conductive wire of the fourth structure of the present application; Fig.15 This is a front view of the contact state between the conductive terminal and the conductive wire of the fourth structure of the present application; Fig.16 A three-dimensional exploded view of the conductive terminal (fifth structure), spring sheet and wire of the present application; Fig.17 A three-dimensional diagram of the contact state between the conductive terminal (fifth structure) and the spring and the wire of the present application; Fig.18 It is a cross-sectional view of the contact state between the conductive terminal (fifth structure) and the spring and the conductive wire of the present application.
[0012] Explanation of symbols in the figure 1: terminal body; 11: first bending portion; 12: second bending portion; 13: side convex portion; 131: bevel; 2: conductive contact wall; 21: conductive contact surface; 3: wire pressing wall; 31: inclined wire pressing surface; 4: first wire bundle protrusion; 41: first inclined surface; 42: third inclined surface; 5: second wire bundle protrusion; 51: second inclined surface; 52: fourth inclined surface; 6: sawtooth convex stop; 7: concave-convex anti-slip structure; 8: wire; 81: first Contact point; 82: second contact point; 83: third contact point; 84: fifth contact point; 85: sixth contact point; 9: spring sheet; 91: first crimping portion; 911: first crimping arm; 92: second crimping portion; 921: second crimping arm; 93: supporting portion; 94: spring sheet bending portion; B: third wire bundle protrusion; B1: first corresponding inclined surface; B2: second corresponding inclined surface; S: spring sheet; T1, T2, T3, T4: conductive terminals. DETAILED DESCRIPTION
[0013] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.
[0014] like Figures 4 to 9As shown, the present application provides a multi-contact conductive terminal of a terminal block, which is used to electrically connect with a wire 8. The multi-contact conductive terminal (referred to as conductive terminal) T1, T2 includes a terminal body 1 and a conductive contact wall 2, the conductive contact wall 2 is fixedly arranged on the terminal body 1, and a conductive contact surface 21 for supporting the wire 8 is formed on the conductive contact wall 2. The terminal body 1 defines a wire feeding direction and a lateral direction perpendicular to the wire feeding direction (not shown in the figure), and the side where the wire 8 contacts the conductive contact surface 21 is set as the lower side. The terminal body 1 is also provided with a wire pressing wall 3, and the wire pressing wall 3 can tightly contact the upper surface of the wire 8. When the wire 8 is inserted into the terminal block through the wire entry hole of the wiring terminal block (hereinafter referred to as the terminal block), the wire 8 slides along the conductive contact surface 21 of the conductive contact wall 2 into the terminal block. When the wire 8 is inserted to a certain depth, the wire 8 passes through the gap between the wire pressing wall 3 and the conductive contact surface 21, and the wire pressing wall 3 closely contacts the upper surface of the wire 8. In this way, when the wire 8 is clamped on the conductive contact surface 21 by the spring S in the terminal block, the wire 8 has at least three contact points with the conductive terminals T1 and T2, such as Figure 8 As shown, there are respectively a first contact point 81 where the spring piece S is opposite to the position where the clamped wire 8 is located, a second contact point 82 where the conductive contact surface 21 and the wire pressing wall 3 are opposite to the position where the clamped wire 8 is located, and a third contact point 83 where the wire pressing wall 3 contacts the wire 8. This effectively increases the number of contact points between the wire 8 and the conductive terminals T1 and T2, ensures the signal transmission stability of the wiring terminal block, and can effectively improve the current flow capacity of the terminal block, thereby realizing large current transmission.
[0015] The wire pressing wall 3 is formed with an inclined wire pressing surface 31 having an acute angle with the conductive contact surface 21, and a trumpet-shaped wire passing channel with a larger gap at the inlet end than at the outlet end is formed between the inclined wire pressing surface 31 and the conductive contact surface 21, and the outlet end gap of the trumpet-shaped wire passing channel is less than or equal to the diameter of the wire 8, and the inlet end gap of the trumpet-shaped wire passing channel is larger than the diameter of the wire 8. By designing the inclined wire pressing surface 31 on the wire pressing wall 3, a trumpet-shaped structure is formed between the inclined wire pressing surface 31 and the conductive contact surface 21, and the insertion guide of the wire 8 is realized, so that the wire 8 is smoothly inserted into the gap between the inclined wire pressing surface 31 and the conductive contact surface 21, and smoothly passes through the wire pressing wall 3 and the conductive contact wall 2 facing each other, so that the inclined wire pressing surface 31 and the conductive contact surface 21 can both be in close contact with the wire 8. In addition, the wire pressing wall 3 can also be designed as a convex arc surface or a cylindrical structure, which are all specific implementation structures that can be easily thought of by those skilled in the art based on this application, and all belong to the protection scope of this application.
[0016] The wire pressing wall 3 and the conductive contact wall 2 are bending pieces arranged at intervals on the terminal body 1. In detail, there is a first bending portion 11 between the terminal body 1 and the conductive contact wall 2, and a second bending portion 12 between the terminal body 1 and the wire pressing wall 3. The conductive contact wall 2 is bent relative to the terminal body 1 via the first bending portion 11, and the wire pressing wall 3 is bent relative to the terminal body 1 via the second bending portion 12. The terminal body 1 is bent to form the wire pressing wall 3 and the conductive contact wall 2, so that the overall structure of the conductive terminals T1 and T2 is simple and easy to manufacture. The wire pressing wall 3 can also be bent to form a V-shaped spring sheet structure to achieve close contact and plug-in avoidance with the wire 8.
[0017] In addition, if Figures 6 to 9 As shown, in order to ensure that the wire pressing wall 3 is bent relative to the terminal body 1, the terminal body 1 has a side protrusion 13 extending along the wire feeding direction, and the side protrusion 13 has a bevel 131 inclined relative to the conductive contact wall 2 (or the conductive contact surface 21), and the wire pressing wall is connected to the bevel 131 and is inclined along the bevel 131 to form the inclined wire pressing surface 31. Therefore, the wire pressing wall 3 can be inclined relative to the conductive contact wall 2 (or the conductive contact surface 21) and spaced from each other as shown in the figure.
[0018] like Fig.10 and Fig.11 In the conductive terminal T3 shown, a first wire-binding protrusion 4 is provided on the conductive contact surface 21, and the wire 8 on the conductive contact surface 21 is accommodated between the first wire-binding protrusion 4 and the terminal body 1. The first wire-binding protrusion 4 forms a first inclined surface 41 toward a side wall of the terminal body 1, and an obtuse angle is formed between the first inclined surface 41 and the conductive contact surface 21. There are two places on the circumferential outer wall of the wire 8 that are in close contact with the terminal body 1 and the first inclined surface 41, respectively. By providing the first wire-binding protrusion 4 on the conductive contact surface 21, the wire 8 is bound along the width direction (or transverse direction) of the conductive contact surface 21 by the first inclined surface 41 on the first wire-binding protrusion 4, so that the circumferential outer wall of the wire 8 is always in contact with the terminal body 1 and the first inclined surface 41, thereby increasing two contact points, which are (refer to Fig.15 As shown): a fourth contact point (not marked with an element symbol) between the wire 8 and the terminal body 1 and a fifth contact point 84 between the wire 8 and the first inclined surface 41. The first wire bundle protrusion 4 is preferably arranged at an edge of the conductive contact surface 21 away from the terminal body 1 in the width direction (or transverse direction).
[0019] In other embodiments not shown in the drawings, the number of the first wire-binding protrusions 4 is at least two, and the at least two first wire-binding protrusions 4 are spaced apart and arranged side by side on the conductive contact surface 21 along the wire feeding direction, thereby increasing the number of contact points.
[0020] like Figures 12 to 15In the conductive terminal T4 shown, a second wire-binding protrusion 5 is further provided on the conductive contact wall 2 (or the conductive contact surface 21), and the second wire-binding protrusion 5 and the first wire-binding protrusion 4 are arranged at intervals along the left-right direction (or transverse direction) on the conductive contact wall 2 (or the conductive contact surface 21), and the second wire-binding protrusion 5 forms a second inclined surface 51 toward the side of the first wire-binding protrusion 4, and an obtuse angle is also formed between the second inclined surface 51 and the conductive contact surface 21, and the wire 8 on the conductive contact surface 21 is supported on the first inclined surface 41 of the first wire-binding protrusion 4 and the second inclined surface 51 of the second wire-binding protrusion 5. A V-shaped wire harness structure is formed by cooperating the second inclined surface 51 on the second wire harness protrusion 5 with the first inclined surface 41 on the first wire harness protrusion 4, so that the wire 8 is always in contact with the first inclined surface 41 and the second inclined surface 51, and two contact points are added, namely the fifth contact point 84 where the wire 8 contacts the first inclined surface 41 and the sixth contact point 85 where the wire 8 contacts the second inclined surface 51. At the same time, it is convenient for the wire 8 to be smoothly inserted between the first inclined surface 41 and the second inclined surface 51. The second wire harness protrusion 5 is preferably set at the position where the conductive contact surface 21 is connected to the terminal body 1.
[0021] In this way, by forming a wire pressing wall 3 on the conductive terminal T4, the upper side surface of the wire 8 on the conductive contact surface 21 is contacted, and by arranging a first wire bundling protrusion 4 and a second wire bundling protrusion 5 on the conductive contact surface 21, and a first inclined surface 41 on the first wire bundling protrusion 4 and a second inclined surface 51 on the second wire bundling protrusion 5 support the side surface of the end section of the wire 8 along the wire feeding direction, and at the same time, the wire pressing wall 3 presses the upper side surface of the end of the wire 8, so that the contact points between the wire 8 and the conductive terminal T4 are effectively increased, which greatly improves the current flow capacity of the wiring terminal block after wiring, and also improves the performance stability of the terminal block, so that the wiring of the wire 8 is more stable.
[0022] The contact points between the first inclined surface 41 and the second inclined surface 51 and the wire 8 are located on the same cross section of the wire 8, and the contact point between the wire pressing wall 3 and the wire 8 is closer to the end of the wire 8 along the wire feeding direction than the contact point between the first inclined surface 41 and the second inclined surface 51 and the wire 8 (see Fig.14 The wire 8 is first inserted into the V-shaped wire support structure between the first inclined surface 41 and the second inclined surface 51, and then moves forward for a while, leaves the V-shaped wire support structure, enters between the conductive contact surface 21 and the wire pressing wall 3, and is finally pressed. In this way, the wire 8 will not be interfered with during the insertion process, and the resistance is small. Of course, these contact points can also be designed on the same cross section.
[0023] The wire feeding side of the first wire harnessing protrusion 4 along the wire feeding direction is a third inclined surface 42, and the wire feeding side of the second wire harnessing protrusion 5 along the wire feeding direction is a fourth inclined surface 52. A bell-shaped wire feeding structure with a gap gradually reduced along the wire feeding direction is formed between the third inclined surface 42 and the fourth inclined surface 52. The bell-shaped wire feeding structure formed by the third inclined surface 42 and the fourth inclined surface 52 can facilitate the wire 8 to smoothly enter between the first wire harnessing protrusion 4 and the second wire harnessing protrusion 5 during the insertion process without interference.
[0024] The first harness protrusion 4 and the second harness protrusion 5 are both V-shaped convex structures formed by stretching on the conductive contact wall 2. The first harness protrusion 4 and the second harness protrusion 5 are formed by stretching on the conductive contact wall 2, which has a simple structure and is easy to manufacture.
[0025] The terminal body 1 defines an insertion terminal for the wire 8 to be inserted along the wire feeding direction, and the wire pressing wall 3, the first wire-binding protrusion 4 and the second wire-binding protrusion 5 are all located above the conductive contact surface 21 and close to the insertion terminal for the wire 8 to be inserted along the wire feeding direction. This facilitates the rapid insertion of the front section of the wire 8, and at the same time, does not affect the spring S clamping the wire 8.
[0026] The conductive contact surface 21 is also provided with a sawtooth convex stopper 6 and a plurality of concave-convex anti-slip structures 7 arranged at intervals along the wire feeding direction. The sawtooth convex stopper 6 and the concave-convex anti-slip structure 7 can increase the pulling force of the wire 8 and prevent the wire 8 from being pulled out by force.
[0027] like Figures 16 to 18 As shown, the conductive contact wall 2 (or the conductive contact surface 21) is further provided with a third wire-binding protrusion B, and the third wire-binding protrusion B is located between the first wire-binding protrusion 4 and the second wire-binding protrusion 5. The first wire-binding protrusion 4, the second wire-binding protrusion 5 and the third wire-binding protrusion B together constitute a wire-binding protrusion group (without element symbols). The wire-binding protrusion group is provided with at least two or at least three (such as Fig.16 The wire-binding protrusion groups shown are three), and at least three wire-binding protrusion groups are spaced apart and arranged side by side on the conductive contact surface 21 along the wire feeding direction. In detail, the first wire-binding protrusion 4, the second wire-binding protrusion 5 and the third wire-binding protrusion B of each wire-binding protrusion group are arranged together on the conductive contact wall 2 (or the conductive contact surface 21) in a lateral spaced manner, and the third wire-binding protrusion B forms a first corresponding inclined surface B1 on the side facing the first wire-binding protrusion 4, and forms a second corresponding inclined surface B2 on the side facing the second wire-binding protrusion 5, and the first corresponding inclined surface B1 and the second corresponding inclined surface B2 also form obtuse angles with the conductive contact surface 21 respectively.
[0028] In this way, when there are two wires 8, one of the wires 8 on the conductive contact surface 21 is supported on the first inclined surface 41 of the first wire-binding protrusion 4 and the first corresponding inclined surface B1 of the third wire-binding protrusion B, and the other wire 8 on the conductive contact surface 21 is supported on the second inclined surface 51 of the second wire-binding protrusion 5 and the second corresponding inclined surface B2 of the third wire-binding protrusion B. Therefore, even if two wires 8 are supported on the conductive contact surface 21, they both have the same number of contact points as when one wire 8 is supported.
[0029] In order to match the conductive contact wall 2 with multiple wire harness protrusion groups, a corresponding spring sheet 9 is designed. The spring sheet 9 includes a supporting portion 93, a spring sheet bending portion 94 and at least two crimping portions. The spring sheet bending portion 94 is connected between the supporting portion 93 and the at least two crimping portions, and the supporting portion 93 is connected to a part of the spring sheet bending portion 94, and the at least two crimping portions are all connected to another part of the spring sheet bending portion 94. As for the at least two crimping portions, they include a first crimping portion 91 and a second crimping portion 92. The supporting portion 93 and all the crimping portions are elastically supported between the conductive terminal and all the wires 8, respectively. The first crimping portion 91 and the second crimping portion 92 can be crimped to any part of the wire 8. In this embodiment, Fig.17 As shown, the first crimping portion 91 and the second crimping portion 92 respectively crimp the wire 8 at the position between any two adjacent wire bundle protrusion groups, and both are crimped on the upper surface of the wire 8. In this way, it can be ensured that the wire 8 and the conductive contact surface 21 have the same number of contact points as mentioned above.
[0030] In detail, the first crimping portion 91 has two first crimping arms 911, and the second crimping portion 92 also has two second crimping arms 921. The two first crimping arms 911 of the first crimping portion 91 respectively crimp the two wires 8 that have been supported on the conductive contact surface 21, and the two second crimping arms 921 of the second crimping portion 92 also respectively crimp the two wires 8 that have been supported on the conductive contact surface 21, so the spring sheet 9 can indeed crimp each wire 8.
[0031] In other embodiments not shown in the figures, if there is only one wire 8 and there are at least two of the V-shaped wire support harness structures, the first crimping portion 91 and the second crimping portion 92 of the spring sheet 9 will correspondingly have only one first crimping arm 911 and a second crimping arm 921, so that the first crimping arm 911 of the first crimping portion 91 and the second crimping arm 921 of the second crimping portion 92 respectively crimp the wire 8 at the position between any two adjacent V-shaped wire support harness structures.
[0032] In summary, the multi-contact conductive terminal of the terminal block of the present application can achieve the expected purpose and effect, and can solve the deficiencies of the prior art, so a patent application is filed. The above-mentioned embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by technicians in this technical field on the basis of the present invention are all within the protection scope of the present invention.
Claims
1. A multi-contact conductive terminal of a terminal block, used for electrically connecting with a wire, characterized in that: The conductive terminal comprises: Terminal body(1); A conductive contact wall (2), the conductive contact wall (2) being fixedly arranged on the terminal body (1), the conductive contact wall (2) being formed with a conductive contact surface (21) for supporting the conductive wire (8), the conductive contact surface (21) being in contact with a side surface of the conductive wire (8); and A wire pressing wall (3) is fixedly arranged on the terminal body (1), and the wire pressing wall (3) can tightly contact the other side surface of the wire (8) located on the conductive contact surface (21), and the two side surfaces of the wire (8) are opposite to each other.
2. The multi-contact conductive terminal of the terminal block according to claim 1, characterized in that: An inclined wire pressing surface is formed on the wire pressing wall (3), an acute angle is formed between the inclined wire pressing surface and the conductive contact surface (21), and a wire passing channel is formed between the inclined wire pressing surface and the conductive contact surface (21), the wire passing channel having an inlet end and an outlet end, the wire passing channel is formed into a bell-mouth shape by the gap at the inlet end being larger than the gap at the outlet end, the gap at the outlet end being smaller than or equal to the diameter of the wire (8), and the gap at the inlet end being larger than the diameter of the wire (8).
3. The multi-contact conductive terminal of the terminal block according to claim 1 or 2, characterized in that: The wire pressing wall and the conductive contact wall (2) are bent sheets arranged at intervals on the terminal body (1).
4. The multi-contact conductive terminal of the terminal block according to claim 3, characterized in that: A first bending portion is provided between the terminal body (1) and the conductive contact wall (2), and a second bending portion is provided between the terminal body (1) and the wire pressing wall (3).
5. The multi-contact conductive terminal of the terminal block according to claim 1, characterized in that: The terminal body (1) is extended with a side protrusion, the side protrusion has a bevel, the bevel is inclined relative to the conductive contact wall (2), and the wire pressing wall (3) is connected to the bevel and is inclined accordingly.
6. The multi-contact conductive terminal of the terminal block according to claim 1, characterized in that: The wire pressing walls (3) are inclined relative to the conductive contact walls (2) and are spaced apart from each other.