Connection terminal and connector
By designing the connection terminals of the buffer shrapnel and buffer cavity, the problem of loose connection terminals and solder fixation in the prior art increases the workload, convenient installation and high service life are achieved, and the risk of damage to the PCB circuit board is reduced.
Patent Information
- Application Number
- CN202422091877.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-08-27
AI Technical Summary
The use of existing connection terminals has problems such as poor loosening, solder fixation increases workload and may damage the PCB circuit board.
A connection terminal including a buffer shrapnel, a first insertion arm, a second insertion arm and a buffer cavity is designed. The buffer shrapnel extends inclinedly during plugging, squeezes the shrapnel in the buffer cavity, reduces resistance to the insertion arm, achieves convenient installation, and rebounds and fixes after installation.
It realizes convenient and easy installation of the connection terminals, avoids the problem of damage caused by strong deformation of the buffer shrapnel, improves service life, and reduces the risk of damage to the PCB circuit board.
Smart Images
Figure CN222953388U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of plug connectors, and in particular to a connecting terminal and a connector. Background Art
[0002] With the rapid development of industrial technology, various convenient tools and accessories are becoming more and more popular in order to improve production and manufacturing capabilities. In the field of electrical connection, in order to improve the convenience of work, people will use connecting terminals for electrical connection. As an accessory product for realizing electrical connection, the use of connecting terminals is gradually increasing with the increasing degree of industrial automation and the increasingly stringent and precise requirements of industrial control. The scope of use of connecting terminals is also becoming wider and wider, and there are more and more types, such as PCB board terminals, hardware terminals, nut terminals, etc.
[0003] In the prior art, PCB circuit boards are usually electrically connected through connecting terminals to ensure the stability of current and signals. The existing connection method is to insert square pins or round pins into the circuit board and then fix them with solder. This method easily leads to loose connectors and high defect rates. When the connecting terminals are pulled out, the solder needs to be re-melted, which increases the workload and may cause certain damage to the PCB circuit board, increasing production costs.
[0004] Therefore, it is necessary to provide an improved connecting terminal to solve part or all of the above problems. Utility Model Content
[0005] The present application provides a connection terminal and a connector that are easy to plug and unplug.
[0006] The present application provides a connecting terminal, comprising a front plug-in portion and a rear connecting portion connected to the front plug-in portion; the front plug-in portion comprises a buffer spring sheet, a first plug-in arm, a second plug-in arm and a buffer cavity; the first plug-in arm and the second plug-in arm are arranged opposite to each other, and the buffer cavity is located between the first plug-in arm and the second plug-in arm; the buffer spring sheet is located in the buffer cavity, and along the front-to-back direction of the front plug-in portion, the buffer spring sheet extends obliquely from the first plug-in arm to the second plug-in arm.
[0007] Furthermore, the front insertion portion also includes a first side surface and a second side surface arranged opposite to the first side surface; along the direction from the first side surface to the second side surface, the angle A between the edge of the projection of the buffer spring and the center line of the front insertion portion is not greater than 45 degrees and not less than 30 degrees.
[0008] Furthermore, the buffer spring sheet includes a first spring sheet connected to the first insertion arm and a second spring sheet connected to the second insertion arm; the first spring sheet is connected to the second spring sheet, and along the direction from the first side surface to the second side surface, the first spring sheet and the second spring sheet partially overlap.
[0009] Further, along the direction from the first side surface to the second side surface, part of the first elastic sheet is located below the second elastic sheet, and the first elastic sheet and the second elastic sheet are both located between the first side surface and the second side surface.
[0010] Furthermore, the first spring sheet and the second spring sheet are set to have the same thickness, and the thickness B of both is not greater than 0.4 mm and not less than 0.15 mm.
[0011] Furthermore, the front insertion part also includes a leading part; the leading part is connected to the ends of the first insertion arm and the second insertion arm, and the leading part is used to guide the installation of the front insertion part.
[0012] Furthermore, the front insertion portion also includes a rear fixing portion; the rear fixing portion is connected to the other end of the first insertion arm and the second insertion arm away from the leading portion, and the rear fixing portion is also connected to the rear connecting portion.
[0013] Further, along the direction from the first insertion arm to the second insertion arm, the width of the rear connecting portion is greater than the width of the rear fixing portion.
[0014] Furthermore, the first insertion arm is provided with a first anti-scratch fillet, and the first anti-scratch fillet is provided at the outer edge of the first insertion arm; the second insertion arm is provided with a second anti-scratch fillet, and the second anti-scratch fillet is provided at the outer edge of the first insertion arm.
[0015] The present application also provides a connector, comprising the connecting terminal as described above.
[0016] Compared with the prior art, the connection terminal of the present application is provided with a buffer cavity between the first plug arm and the second plug arm, and the buffer spring is in the buffer cavity, so that when the connection terminal is plugged in, the first plug arm and the second plug arm are deformed toward the buffer cavity and squeeze the buffer spring. The buffer spring is tilted from the first plug arm to the second plug arm, so that when the buffer spring resists deformation, only part of the resistance force is applied to the first plug arm and the second plug arm, thereby making the buffer spring easier to deform, and the front plug part is more convenient and easy to install. At the same time, it also avoids the occurrence of damage to the buffer spring due to strong deformation, and improves the service life of the buffer spring and the front plug part. After the front plug part is installed, the buffer spring will rebound and recover, thereby restoring the first plug arm and the second plug arm, so that the front plug part can be fixed.
[0017] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present specification. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and, together with the description, serve to explain the principles of the specification.
[0019] Figure 1 This is a schematic diagram of the connection terminal of the present application before being inserted into the PCB circuit board.
[0020] Figure 2 yes Figure 1 Schematic diagram of the connecting terminal when inserted into the PCB circuit board.
[0021] Figure 3 yes Figure 2 Schematic diagram of the connecting terminal after being inserted into the PCB circuit board.
[0022] Figure 4 It is a three-dimensional diagram of the connection terminal of the present application.
[0023] Figure 5 It is a partial stereoscopic diagram of the connection terminal of the present application.
[0024] Figure 6 It is a partial stereoscopic diagram of the connection terminal of the present application from another perspective.
[0025] Figure 7 It is a side view of the connection terminal of the present application.
[0026] Figure 8 yes Figure 7 Cross-sectional view of the middle connecting terminal along CC.
[0027] Explanation of the accompanying figures: 1-front insertion part; 11-buffer spring sheet; 111-first spring sheet; 112-second spring sheet; 12-first insertion arm; 121-first anti-scratch fillet; 13-second insertion arm; 131-second anti-scratch fillet; 14-buffer cavity; 15-first side surface; 16-second side surface; 17-leading part; 171-guide surface; 18-rear fixing part; 2-rear connecting part; 3-PCB circuit board. DETAILED DESCRIPTION
[0028] Here, the technical solutions in the embodiments (or "implementations") of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0029] If there are terms involving directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance.
[0030] like Figures 1 to 4 As shown, the connection terminal of the present application is used for electrical connection, and in this article, the connection terminal is plugged into the PCB circuit board 3 as an example for explanation. The connection terminal includes a front plug-in portion 1 and a rear connection portion 2. The front plug-in portion 1 is connected to the rear connection portion 2, and the front plug-in portion 1 is used to plug the PCB circuit board 3. The front plug-in portion 1 includes a buffer spring 11, a first plug arm 12, a second plug arm 13, a buffer cavity 14, a leading portion 17 and a rear fixing portion 18.
[0031] In one embodiment, the first insertion arm 12 and the second insertion arm 13 are arranged opposite to each other and are both arranged between the leading portion 17 and the rear fixing portion 18. Furthermore, the first insertion arm 12 and the second insertion arm 13 have substantially the same structure. There is a gap between the first insertion arm 12 and the second insertion arm 13, and the buffer cavity 14 is located between the first insertion arm 12 and the second insertion arm 13. The buffer spring sheet 11 is located in the buffer cavity 14, and along the front-to-back direction of the front insertion portion 1, the buffer spring sheet 11 extends obliquely from the first insertion arm 12 to the second insertion arm 13.
[0032] With such a configuration, when the connecting terminal is plugged in, the first plug arm 12 and the second plug arm 13 are deformed toward the buffer cavity 14 and squeeze the buffer spring sheet 11. The buffer spring sheet 11 is tilted from the first plug arm 12 to the second plug arm 13, so that when the buffer spring sheet 11 resists deformation, only part of the resistance force is applied to the first plug arm 12 and the second plug arm 13, thereby making it easier for the buffer spring sheet 11 to deform, and the front plug portion 1 is more conveniently and easily inserted into the PCB circuit board 3. At the same time, it also avoids the occurrence of damage to the buffer spring sheet 11 due to strong deformation, thereby improving the service life of the buffer spring sheet 11 and the front plug portion 1.
[0033] After the front inserting portion 1 passes through the PCB circuit board 3 , the buffer spring 11 will rebound and restore, thereby restoring the first inserting arm 12 and the second inserting arm 13 , so that the front inserting portion 1 is engaged with the PCB circuit board 3 .
[0034] Further integration Figures 5 to 7In one embodiment, the front plug-in portion 1 includes a first side surface 15 and a second side surface 16. The second side surface 16 is disposed opposite to the first side surface 15, and the second side surface 16 and the first side surface 15 are respectively located at the upper and lower sides of the front plug-in portion 1. Along the direction from the first side surface 15 to the second side surface 16, the angle A between the edge of the projection of the buffer spring sheet 11 and the center line of the front plug-in portion 1 is not greater than 45 degrees and not less than 30 degrees. In this way, when the first insertion arm 12 and the second insertion arm 13 squeeze the buffer spring sheet 11, the buffer spring sheet 11 is more easily deformed, and the resistance to the first insertion arm 12 and the second insertion arm 13 is smaller. At the same time, after the front plug-in portion 1 is installed, the buffer spring sheet 11 is more likely to rebound to fix the front plug-in portion 1 to the PCB circuit board 3.
[0035] Specifically, if the angle A between the edge of the projection of the buffer spring sheet 11 and the center line of the front insertion portion 1 is greater than 45 degrees, the resistance component of the buffer spring sheet 11 when resisting deformation will increase, increasing the difficulty of inserting the front insertion portion 1 and reducing the smoothness of the insertion of the front insertion portion 1. If the angle A between the edge of the projection of the buffer spring sheet 11 and the center line of the front insertion portion 1 is less than 30 degrees, the restoring elastic force of the buffer spring sheet 11 will be affected, which is not conducive to supporting the restoration of the first insertion arm 12 and the second insertion arm 13, thereby reducing the clamping stability of the front insertion portion 1 and the PCB circuit board 3.
[0036] Further integration Figure 8 As shown, in one embodiment, the buffer spring 11 includes a first spring 111 and a second spring 112. The first spring 111 is connected to the first insertion arm 12, the second spring 112 is connected to the second insertion arm 13, and the first spring 111 is connected to the second spring 112. Along the direction from the first side surface 15 to the second side surface 16, the first spring 111 and the second spring 112 partially overlap. Specifically, the thickness of the connecting portion of the first spring 111 and the second spring 112 is less than the thickness of the first spring 111 and the thickness of the second spring 112. With such a configuration, when the buffer spring 11 is squeezed and deformed, the first spring 111 and the second spring 112 are more likely to be deformed and have space for deformation.
[0037] Along the direction from the first side surface 15 to the second side surface 16, part of the first spring sheet 111 is located below the second spring sheet 112, and the first spring sheet 111 and the second spring sheet 112 are both located between the first side surface 15 and the second side surface 16. In this way, when the front insertion portion 1 is inserted, the first spring sheet 111 and the second spring sheet 112 are prevented from scratching the PCB circuit board 3.
[0038] Along the direction from the leading portion 17 to the rear fixing portion 18 , part of the second elastic sheet 112 is located in front of the first elastic sheet 111 . Further, the second elastic sheet 112 is located in the front half of the buffer cavity 14 , and the first elastic sheet 111 is located in the rear half of the buffer cavity 14 .
[0039] In other embodiments, along the direction from the leading portion 17 to the rear fixing portion 18, part of the first elastic sheet 111 is located in front of the second elastic sheet 112. Further, the first elastic sheet 111 is located in the front half of the buffer cavity 14, and the second elastic sheet 112 is located in the rear half of the buffer cavity 14.
[0040] In one embodiment, the first spring sheet 111 and the second spring sheet 112 are set to be of equal thickness, and the thickness B of both is not greater than 0.4 mm and not less than 0.15 mm. Such a setting can not only make the first spring sheet 111 and the second spring sheet 112 plastically deform, but also avoid the occurrence of failure problems caused by the first spring sheet 111 and the second spring sheet 112 being too thin.
[0041] In one embodiment, the first insertion arm 12 is provided with a first anti-scratch fillet 121. The first anti-scratch fillet 121 is provided at the outer edge of the first insertion arm 12 and extends from the leading portion 17 to the rear fixing portion 18. The second insertion arm 13 is provided with a second anti-scratch fillet 131. The second anti-scratch fillet 131 is provided at the outer edge of the first insertion arm 12 and extends from the leading portion 17 to the rear fixing portion 18. The first anti-scratch fillet 121 and the second anti-scratch fillet 131 are symmetrically arranged. Such an arrangement improves the smoothness of the insertion of the front insertion portion 1 and prevents the front insertion portion 1 from scratching the PCB circuit board 3.
[0042] Combine again Figure 5 and Figure 6 As shown, the leading portion 17 is connected to the ends of the first insertion arm 12 and the second insertion arm 13, and the leading portion 17 is used to guide the installation of the front insertion portion 1. The leading portion 17 includes a plurality of guide surfaces 171, and the guide surfaces 171 are arranged obliquely from the back to the front at the leading portion 17. The plurality of guide surfaces 171 are arranged around the leading portion 17 in sequence.
[0043] The rear fixing portion 18 is connected to the other end of the first insertion arm 12 and the second insertion arm 13 away from the leading portion 17, and the rear fixing portion 18 is also connected to the rear connecting portion 2. After the front insertion portion 1 is installed, the rear fixing portion 18 contacts the PCB circuit board 3.
[0044] In one embodiment, along the direction from the first insertion arm 12 to the second insertion arm 13, the width of the rear connection portion 2 is greater than the width of the rear fixing portion 18. The rear connection portion 2 is used to limit the connection terminal to prevent the front insertion portion 1 from being inserted into the PCB circuit board 3 too much.
[0045] The present application also provides a connector, comprising the connecting terminal as described above.
[0046] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without causing conflicts. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.
Claims
1. A connecting terminal, characterized in that: It includes a front insertion part and a rear connection part connected to the front insertion part; the front insertion part includes a buffer spring sheet, a first insertion arm, a second insertion arm and a buffer cavity; the first insertion arm and the second insertion arm are arranged opposite to each other, and the buffer cavity is located between the first insertion arm and the second insertion arm; the buffer spring sheet is located in the buffer cavity, and along the front-to-back direction of the front insertion part, the buffer spring sheet extends obliquely from the first insertion arm to the second insertion arm.
2. The connecting terminal according to claim 1, characterized in that: The front insertion portion also includes a first side surface and a second side surface disposed opposite to the first side surface; along the direction from the first side surface to the second side surface, an angle A between the edge of the projection of the buffer spring and the center line of the front insertion portion is not greater than 45 degrees and not less than 30 degrees.
3. The connecting terminal according to claim 2, characterized in that: The buffer spring sheet includes a first spring sheet connected to the first insertion arm and a second spring sheet connected to the second insertion arm; the first spring sheet is connected to the second spring sheet, and along the direction from the first side surface to the second side surface, the first spring sheet and the second spring sheet partially overlap.
4. The connecting terminal according to claim 3, characterized in that: Along the direction from the first side surface to the second side surface, part of the first elastic sheet is located below the second elastic sheet, and the first elastic sheet and the second elastic sheet are both located between the first side surface and the second side surface.
5. The connecting terminal according to claim 3, characterized in that: The first spring sheet and the second spring sheet are set to have the same thickness, and the thickness B of both is not greater than 0.4 mm and not less than 0.15 mm.
6. The connecting terminal according to claim 1, characterized in that: The front insertion portion further includes a leading portion; the leading portion is connected to the ends of the first insertion arm and the second insertion arm, and the leading portion is used to guide the installation of the front insertion portion.
7. The connecting terminal according to claim 6, characterized in that: The front inserting portion further includes a rear fixing portion; the rear fixing portion is connected to the other end of the first inserting arm and the second inserting arm away from the leading portion, and the rear fixing portion is also connected to the rear connecting portion.
8. The connecting terminal according to claim 7, characterized in that: Along the direction from the first insertion arm to the second insertion arm, the width of the rear connecting portion is greater than the width of the rear fixing portion.
9. The connecting terminal according to claim 1, characterized in that: The first insertion arm is provided with a first anti-scratch fillet, and the first anti-scratch fillet is provided at the outer edge of the first insertion arm; the second insertion arm is provided with a second anti-scratch fillet, and the second anti-scratch fillet is provided at the outer edge of the first insertion arm.
10. A connector, characterized in that: The invention comprises a connecting terminal as claimed in any one of claims 1 to 9.