Floating connection terminal
By designing floating connection terminals, using the combination of floating guide rails and elastic parts, the problem of plug contact error during electrical connection between PCB boards is solved, automatic assembly and high-reliability electrical contact is achieved, and assembly error is reduced and improved. Conductive effect.
Patent Information
- Application Number
- CN202420922632.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-29
AI Technical Summary
During the electrical connection between PCB boards, contact errors between the insert and the connector are prone to occur, resulting in poor conductivity. The existing technology solves the problem by adding relay connectors, but increases the difficulty and cost of connection and cannot Completely eliminate errors.
Design a floating connection terminal, including a frame, a bracket and a floating guide rail, with symmetrical contact shrapnel and elastic members on the frame. The floating guide rail allows the frame to slide in the Y direction, and the shrapnel can be adjusted in the X, Y, and Z directions to absorb. The deviation of the insert ensures reliable contact.
It realizes automatic assembly, improves the reliability of electrical contact, reduces assembly errors between PCB boards, and ensures the stability and conductive effect of electrical connections.
Smart Images
Figure CN222282289U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of connection terminals, in particular to a floating connection terminal. Background Art
[0002] The connection terminals on a PCB (Printed Circuit Board) are conductive elements used to connect electronic components or external devices. These connection terminals can take many forms, including sockets, pins, solder points, etc. They are usually connected to the circuits on the circuit board through wires or welding to achieve electrical connections between electronic components.
[0003] To achieve electrical connection between different PCB boards or modules, it is necessary to overcome the error when the plug-in and the connector contact each other during the assembly process to prevent insufficient contact from affecting the conductive effect. In the prior art, a relay connector is usually added to absorb the position difference between the male and female ends. However, this connection method increases the difficulty and cost of the connection process. After the connection, there is still a certain assembly error that affects the conductive effect.
[0004] Therefore, a floating connection terminal is proposed to solve the above-mentioned problem. Utility Model Content
[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a floating connection terminal to solve the problem of contact errors of conductive parts that are easily generated when electrically connecting PCB boards. On the one hand, it realizes automated assembly, and on the other hand, it solves the problem of conductive effect during connection and improves the reliability of electrical contact.
[0006] The above technical purpose of the utility model is achieved through the following technical solutions: a floating connection terminal, including a frame and a bracket, the two sides of the bracket in the length direction are fixedly connected with symmetrically arranged floating guide rails, the frame is slidably connected to the floating guide rails, the top surface of the frame is fixedly connected with vertically symmetrically arranged contact springs, and the contact springs are located in the frame, and a clamping space is formed between the contact springs, one side of the bottom end of the frame is fixedly connected with an elastic member, the other side of the elastic member is fixedly connected to one end of the bracket, and the bottom end of the bracket is fixedly connected with a plurality of welding feet.
[0007] By adopting the above technical solution, when the plug-in piece welded on the PCB board or on the module is inserted into the frame, it can contact with the contact spring piece, and the plug-in piece is located in the clamping space formed between the contact spring pieces, ensuring that the plug-in piece can effectively conduct electricity when in contact with the contact spring piece. When the plug-in piece on the PCB board is inserted and there is a deviation in the Z direction, the insertion depth of the plug-in piece can be adjusted to ensure reliable contact. When the plug-in piece on the PCB board is inserted and there is a deviation in the Y direction, the frame can slide on the floating guide rail and drive the contact spring piece to move together, ensuring that the contact spring piece and the plug-in piece are in reliable contact. When the plug-in piece on the PCB board is inserted and there is a deviation in the X direction, the spring piece still has a redundant effective contact area to contact with the plug-in piece, thereby ensuring reliable contact.
[0008] The utility model is further configured as follows: the end surfaces of the contact spring sheets form contact protrusions and are close to each other.
[0009] By adopting the above technical solution, the plug-in can be clamped by the protrusion after being inserted, so that the contact spring has a certain clamping force on the plug-in to ensure full contact.
[0010] The utility model is further configured as follows: a guide piece is fixedly connected to the top surface of the contact spring piece, and two ends of the top surface of the guide piece are bent downward to form a gap.
[0011] By adopting the above technical solution, when the insert contacts the arc surface of the guide member during insertion, the insert can smoothly slide into the frame and contact the contact spring sheet, thereby playing a guiding role and protecting the contact spring sheet.
[0012] The utility model is further configured as follows: a plurality of symmetrically arranged grooves are opened at the bottom end of the frame, the grooves are located directly above the connecting ends of the elastic members, the floating guide rails are located in the grooves and the outer peripheral walls of the floating guide rails are in contact with the inner peripheral walls of the grooves.
[0013] By adopting the above technical solution, when the frame can slide on the floating guide rail, the floating guide rail can also limit the frame, limiting the frame to horizontal movement in the Y direction and small angle rotation around the Z axis.
[0014] The utility model is further configured as follows: both ends of the floating guide rail are fixedly connected with upwardly tilted stoppers.
[0015] By adopting the above technical solution, the frame is prevented from being separated from the floating guide rail when sliding on the floating guide rail.
[0016] The utility model is further configured as follows: the connection end between the elastic member and the frame is an arc surface, and the connection end between the elastic member and the bracket is also an arc surface. The elastic member is inclined or vertically arranged and forms an angle of degrees when connected to the bracket.
[0017] By adopting the above technical solution, the stress concentration at the connection between the elastic member and the frame and the bracket is reduced, and the frame is prevented from driving the elastic member and causing damage to the connection during movement.
[0018] In summary, the utility model has the following beneficial effects: when the plug-in piece welded on the PCB board is inserted into the frame, it can contact with the contact spring piece, and the plug-in piece is located in the clamping space formed between the contact spring pieces, ensuring that the plug-in piece and the contact spring piece can effectively conduct electricity when in contact; when the plug-in piece on the PCB board is inserted and there is a deviation in the Z direction, the insertion depth of the plug-in piece can be adjusted to ensure reliable contact; when the plug-in piece on the PCB board is inserted and there is a deviation in the Y direction, the frame can slide on the floating guide rail and drive the contact spring piece to move together, ensuring that the contact spring piece and the plug-in piece are in reliable contact; when the plug-in piece on the PCB board is inserted and there is a deviation in the X direction, the spring piece still has enough effective contact area to contact with the plug-in piece, thereby ensuring reliable contact; after the plug-in piece on the PCB board at the male end is inserted into the floating terminal on the female end PCB board, the error of assembly between the boards can be absorbed, ensuring reliable contact during electrical connection, and at the same time facilitating assembly and realizing automatic assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;
[0020] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;
[0021] Figure 3 It is a cross-sectional schematic diagram of the utility model;
[0022] In the figure:
[0023] 11. Frame; 12. Bracket; 13. Floating guide rail; 14. Contact spring; 15. Elastic member; 16. Welding foot; 17. Groove; 18. Guide member; 19. Stopper; 20. Contact protrusion. DETAILED DESCRIPTION
[0024] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the embodiment described below is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.
[0026] Please refer to Figure 1 and Figure 2 The present application provides a floating connection terminal, including a frame 11 and a bracket 12, wherein symmetrically arranged floating guide rails 13 are fixedly connected to both sides of the top surface of the bracket 12, the frame 11 is slidably connected to the floating guide rails 13, and a vertically arranged contact spring 14 is fixedly connected to the top surface of the frame 11. The width of the contact spring 14 is smaller than the width of the frame 11 and the contact spring 14 is located in the frame 11, and a clamping space is formed between the contact springs 14. An elastic member 15 is fixedly connected to one side of the bottom end of the frame 11, and the other side of the elastic member 15 is fixedly connected to one end of the bracket 12, and a plurality of welding feet 16 are fixedly connected to the bottom end of the bracket 12.
[0027] In this embodiment, the floating connection terminal is made of copper alloy and is integrally formed by punching and bending processes. After the material is punched to obtain a flat plate structure of the floating connection terminal, it is bent to form a U-shaped bracket 12, and the two sides of the bracket 12 are symmetrically arranged. The length of the two sides of the bracket 12 symmetrically arranged is greater than the length of the side connected to the elastic member 15. There are 6 solder feet 16 integrally formed on the bottom surface of the bracket 12, and the floating connection terminal can be welded and fixed on the PCB board through the solder feet 16. The bracket 12 extends vertically upward above the side end away from the frame 11 to form a strip structure connected to the elastic member 15. At the same time, the floating guide rails 13 integrally formed on the two sides of the symmetrically arranged bracket 12 have an appearance of a flat plate structure and are formed by bending toward the center line direction of the bracket 12. The frame 11 is a hollow rectangular frame 11 structure. The frame 11 is formed by bending the plate so that it is located directly above the floating guide rail 13, and the frame 11 can be slidably connected to the floating guide rail 13.
[0028] Please refer to Figures 2 to 3As shown, two vertically arranged contact springs 14 are formed on the frame 11 by a bending process, and a clamping space is formed between the two contact springs 14. At the same time, the contact structure that contacts the PCB board plug-in can also be an asymmetric structure, wherein one side of the frame 11 is formed with a contact spring 14 by a bending process, and the other side of the frame 11 is formed with a contact boss, so that a clamping space is also formed between the contact spring 14 and the contact boss. Preferably, in one embodiment, when the two PCBs are electrically connected, the plug-in of the male PCB board is inserted into the female PCB board. When the connection is realized in the floating terminal of the plug-in, after the plug-in enters the frame 11, it can contact with the contact springs 14 on both sides to realize electrical connection. At the same time, when the plug-in on the PCB board is inserted, there is a deviation in the Z-axis direction. The insertion depth of the plug-in can be adjusted to ensure reliable contact. When the insertion depth is too shallow and the contact area of the contact spring 14 is small, the insertion depth of the plug-in can be increased so that the plug-in has sufficient effective contact length to contact the contact spring 14. The width of the contact spring 14 is smaller than the width of the frame 11 so that the contact spring 14 can be located in the frame 11 to prevent the contact spring 14 from being directly exposed. The frame 11 is exposed to the outside, and can play a certain protective role for the inserted plug-in and the contact spring 14. When the plug-in on the PCB board deviates in the X-axis direction when being inserted, the spring still has enough effective contact area to contact with the plug-in, thereby ensuring reliable contact in the X direction. The elastic member 15 integrally formed on one side of the bottom end of the frame 11 can calibrate the position of the frame 11 in the Y-axis direction when the frame 11 slides on the floating guide rail 13. When the plug-in is ready to be inserted into the frame 11 but cannot be aligned with the frame 11, or the plug-in and the contact spring 14 are not sufficiently in contact in the Y-axis direction after insertion. When the frame 11 is moved, the frame 11 can be adjusted to slide on the floating guide rail 13 to change the position of the contact spring 14, so that the plug-in can make good contact with the contact spring 14 in the Y-axis direction when inserted, and the elastic member 15 is stretched or compressed when the frame 11 moves. Therefore, the floating connection terminal can reduce the assembly error in the three directions of X, Y, and Z when connecting two PCB boards, so that the plug-in can fully contact with the contact spring 14 after insertion, thereby preventing the poor conductive effect during PCB connection and affecting the performance of the product, and the assembly of PCB boards through the floating connection terminal is more convenient.
[0029] Please refer to Figure 2 and Figure 3When the contact spring piece 14 formed by bending the top surface of the frame 11 is vertically arranged, the end surfaces of the two contact spring pieces 14 are bent to form contact protrusions 20 below them and are close to each other. When the plug-in is inserted into the frame 11, the protrusions 20 of the two contact spring pieces 14 can apply a certain clamping force to the plug-in, further ensuring a more reliable contact, preventing the plug-in from loosening when in contact with the contact spring piece 14 and affecting the conductive effect. At the same time, a guide member 18 is integrally formed on the top surface of the contact spring piece 14, wherein the guide member 18 is integrally formed on the arc surface of the top of the contact spring piece 14 after punching and bending. The arc surface formed by the guide member 18 allows the plug-in to slide smoothly into the frame 11 and contact the contact spring piece 14 when inserted, thereby playing a guiding role. At the same time, one end of the guide member 18 is bent downward to form two side edges, and the bottom surfaces of the two side edges are in contact with the top surface of the frame 11, so that the guide member 18 has a guiding role and a protective effect, thereby further protecting the inserted plug-in and the contact spring piece.
[0030] Please refer to Figure 1 The bottom end of the outer peripheral wall of the frame 11 is provided with four grooves 17 which are symmetrically arranged on the left and right sides, and the grooves 17 are located just above the connection end of the elastic member 15. The frame 11 can be slidably connected to the floating guide rail 13 through the grooves 17. The floating guide rail 13 is located in the grooves 17, and the outer peripheral wall of the floating guide rail 13 is in contact with the inner peripheral wall of the grooves 17. Through the cooperation between the grooves 17 and the floating guide rail 13, the frame 11 can be limited when sliding on the floating guide rail 13, so as to prevent the frame 11 from sliding. The frame 11 can rotate in the directions of the Z axis and the X axis, and can rotate slightly along the Z axis. The frame 11 can also be prevented from moving in the directions of the Z axis and the X axis, so that it can only move in the Y axis, thereby reducing the assembly error in the Y axis direction, ensuring that the contact spring 14 in the frame 11 is in good contact with the plug-in piece, and after the floating guide rail 13 is bent and formed, its two ends are bent to form upwardly raised stoppers 19, which can prevent the frame 11 from falling off the floating guide rail 13 when sliding along the Y axis direction.
[0031] Please refer to Figures 1 to 3The elastic member 15 is integrally formed on the bracket 12 through a bending process, and its shape is a strip structure, and its cross-section is S-shaped. There are two elastic members 15 in total and they are symmetrically arranged. A long plate-shaped fixing member is also arranged between the elastic members 15 to enhance the connection strength between the two elastic members 15 and prevent the elastic members 15 from being excessively deformed and damaged during expansion and contraction. One end of the elastic member 15 is connected to one end of the strip structure formed by the bracket 12 extending upward, wherein the connection end of the elastic member 15 and the frame 11 forms an arc surface through a bending process, and the connection end of the elastic member 15 and the bracket 12 also forms an arc surface, and the elastic member 15 is fixed between the frame 11 and the bracket 12 and is arranged obliquely, and it is connected to the bracket When the frame 11 is connected to the bracket 12, an angle of 45 to 90 degrees is formed. The arc surface formed at the connection end can reduce the stress concentration at the connection and prevent the elastic member 15 from breaking due to excessive tension during the extension and contraction process. When the frame 11 moves on the floating guide rail 13, the elastic member 15 is arranged between the frame 11 and the bracket 12. When current is conducted, it can be transmitted to the frame 11 through the contact spring 14, and then the current is conducted to the bracket 12 through the frame 11. Finally, the current is conducted to the PCB board of the female end through the welding foot 16 of the bracket 12 to achieve electrical connection. The setting of the elastic member 15 enhances the overall conductive effect of the floating connection terminal and will not affect the sliding of the frame 11 on the floating guide rail 13.
[0032] Working principle: When in use, the floating connection terminal is fixed to the female PCB board by welding with the welding foot 16. When the two PCB boards are electrically connected through the floating connection terminal, the plug on the male PCB board is inserted into the floating connection terminal on the female PCB board. After the plug enters the frame 11, it contacts with the contact spring 14. When the two contact springs 14 contact the plug, they also apply a certain clamping force to ensure reliable contact to prevent loosening during contact and affect the conductive effect. At the same time, when the plug on the PCB board is inserted, an error occurs in the Z-axis direction. The insertion depth of the plug can be adjusted to ensure reliable contact. When an assembly error occurs in the X-axis direction, the spring The sheet has enough effective contact area to contact with the plug-in sheet, thereby ensuring reliable contact in the X direction. When an assembly error occurs in the Y-axis direction when the plug-in sheet is inserted, the frame 11 can be adjusted to slide on the floating guide rail 13 to change the position of the frame 11, so that the plug-in sheet is in the best contact position with the contact spring sheet 14 in the Y-axis direction after insertion, thereby preventing the plug-in sheet from having poor contact with the contact spring sheet 14 and affecting the conductive effect. The floating connection terminal can reduce assembly errors in the three directions of X, Y, and Z when connecting two PCB boards, so that the plug-in sheet can fully contact with the contact spring sheet 14 after insertion, thereby preventing the conductive effect from being poor when the PCB is connected and affecting the performance of the product.
[0033] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. A floating connection terminal, comprising a frame (11) and a bracket (12), characterized in that: The bracket (12) is fixedly connected to symmetrically arranged floating guide rails (13) on both sides in the length direction, the frame (11) is slidably connected to the floating guide rails (13), the top surface of the frame (11) is fixedly connected to a vertically arranged contact spring sheet (14), the width of the contact spring sheet (14) is smaller than the width of the frame (11), and the contact spring sheet (14) is located in the frame (11), and a clamping space is formed between the contact spring sheets (14), one side of the bottom end of the frame (11) is fixedly connected to an elastic member (15), the other side of the elastic member (15) is fixedly connected to one end of the bracket (12), and the bottom end of the bracket (12) is fixedly connected to a plurality of welding feet (16).
2. A floating connection terminal according to claim 1, characterized in that: The end surfaces of the contact spring pieces (14) form contact protrusions (20) and are close to each other.
3. A floating connection terminal according to claim 2, characterized in that: The top surface of the contact spring (14) is fixedly connected to a guide member (18), and both ends of the top surface of the guide member (18) are bent downward to form a gap.
4. A floating connection terminal according to claim 1, characterized in that: The bottom end of the frame (11) is provided with a plurality of symmetrically arranged grooves (17), the grooves (17) being located directly above the connecting end of the elastic member (15), the floating guide rail (13) being located in the grooves (17), and the outer peripheral wall of the floating guide rail (13) being in contact with the inner peripheral wall of the groove (17).
5. A floating connection terminal according to claim 4, characterized in that: Both ends of the floating guide rail (13) are fixedly connected with upwardly tilted stoppers (19).
6. A floating connection terminal according to claim 1, characterized in that: The connection end between the elastic member (15) and the frame (11) is in the form of an arc surface, and the connection end between the elastic member (15) and the bracket (12) is also in the form of an arc surface. The elastic member (15) is arranged obliquely and forms an angle of 45 degrees to 90 degrees when connected to the bracket (12).