Miniaturized connection terminal structure with high vibration resistance
By employing a hollow tubular structure and an arch-shaped support spring in the connection terminal, combined with an overpressure-resistant tongue for limiting, the problem of easy fatigue failure of the spring is solved, achieving high vibration resistance and stability of the miniaturized connection terminal, which is suitable for electrical signal transmission in vibration environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU ZHUCHENG ELECTRICAL CO LTD
- Filing Date
- 2025-04-23
- Publication Date
- 2026-04-24
AI Technical Summary
Existing connection terminals are prone to failure due to spring fatigue under vibration or shock environments, resulting in fluctuations in contact resistance or disconnection. Furthermore, increasing the thickness or number of springs leads to an increase in terminal size, making it difficult to meet the miniaturization requirements of modern equipment.
The terminal connection part adopts a hollow tubular structure, combined with an arch-shaped support spring and an overpressure protection tongue. The overpressure protection tongue limits the main spring to avoid excessive deformation, and the arch-shaped structure provides stable elastic deformation in a limited space, thereby enhancing the connection stability.
The miniaturized connection terminal structure achieves stable electrical signal connection under vibration environment, avoids excessive deformation of spring and mechanical stress transmission, ensures the reliability and stability of connection, and reduces space occupation.
Smart Images
Figure CN224164413U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical connector technology, specifically to a miniaturized connection terminal structure with high vibration resistance. Background Technology
[0002] Electrical connectors, also known as connection terminals, are key components for transmitting electrical signals between electronic devices and are widely used in fields such as communications, aerospace, automotive electronics, and precision instruments. With the miniaturization and increasing functional integration of electronic devices, the requirements for connection terminals are becoming increasingly stringent.
[0003] In existing technologies, traditional connection terminals mostly employ spring-loaded contact structures, relying on the elastic deformation of metal springs to provide contact pressure. However, under vibration or shock environments, the springs are prone to fatigue failure, leading to fluctuations in contact resistance or even complete disconnection, severely affecting signal transmission stability. Some improved solutions enhance vibration resistance by increasing the thickness or number of springs, but this results in a larger terminal size, making it difficult to meet the high space utilization requirements of modern equipment.
[0004] Therefore, how to provide a miniaturized connection terminal structure with high vibration resistance to overcome the defects in the existing technology is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0005] Therefore, this utility model provides a miniaturized connection terminal structure with high vibration resistance to solve the problem that the increased terminal volume caused by increasing the thickness or number of springs to improve vibration resistance in the prior art makes it difficult to meet the miniaturization requirements of modern equipment.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] This utility model discloses a miniaturized connection terminal structure with high vibration resistance, comprising:
[0008] The terminal connection part is a hollow tubular structure, and a through groove is provided on the top of the terminal connection part. The terminal connection part is used to connect a male terminal.
[0009] The cable connector is integrally formed with the terminal connector, and the cable connector is used to connect cables.
[0010] The bottom contact is integrally formed with the terminal connection portion, and the bottom contact is disposed on the bottom surface of the terminal connection portion;
[0011] A terminal locking spring is integrally formed with the terminal connection part. The terminal locking spring is disposed on the top of the terminal connection part. The terminal locking spring is bent away from the terminal connection part. The side wall of the terminal connection part is provided with a return groove that the terminal locking spring can enter after deformation.
[0012] The main spring sheet is integrally formed with the terminal connection part, and the main spring sheet passes through the through groove and bends inward toward the interior of the terminal connection part;
[0013] The supporting spring is arched and is formed by bending the lower wall of the terminal locking spring downward. The supporting spring extends through the through groove to the upper side of the main spring and abuts against the main spring to form a double spring structure.
[0014] The overpressure prevention tongue is formed by bending a portion of the side wall of the terminal locking spring inward. The overpressure prevention tongue is disposed between the main spring and the terminal locking spring, and is used to prevent the main spring from being excessively deformed.
[0015] Furthermore, the supporting spring sheet includes a parallel portion and a bent portion. The parallel portion extends obliquely downward and is provided with a bent portion. Both the parallel portion and the bent portion are located above the main spring sheet, and the arc-shaped corner of the bent portion abuts against the arc-shaped corner of the main spring sheet.
[0016] Furthermore, the cable connector includes:
[0017] The pressure-pressing parts are arranged in pairs, and the inner sidewall of the pressure-pressing parts is provided with a plurality of pressure-pressing grooves;
[0018] The covering parts are arranged in pairs, with the two covering parts being staggered from each other.
[0019] Furthermore, a main spring contact is provided at the bottom of the main spring contact at a position corresponding to the bottom contact.
[0020] Furthermore, the terminal locking spring includes:
[0021] The left wall of the spring contact is integrally formed with the side wall of the terminal connection portion;
[0022] The upper wall of the spring is integrally formed with the left wall of the spring, and the end of the upper wall of the spring extends downward to form a first pressure contact portion;
[0023] The right wall of the spring is integrally formed with the upper wall of the spring, and the anti-overpressure tongue is disposed on the right wall of the spring;
[0024] The lower wall of the spring is integrally formed with the right wall of the spring, and the supporting spring is disposed at the end of the lower wall of the spring.
[0025] Furthermore, a plurality of insertion holes are provided on the side wall of the terminal connection part, and a plurality of insertion parts are formed on the top wall of the terminal connection part, and the insertion parts and the insertion holes are engaged by snap-fit.
[0026] Furthermore, the left wall, upper wall, right wall, and lower wall of the spring sheet together form an anti-misalignment opening, the cross-section of which is trapezoidal.
[0027] Furthermore, a second pressure contact is formed at the end of the left wall of the spring, and an inlet that cooperates with the second pressure contact is provided on the side wall of the terminal connection.
[0028] This utility model has the following advantages:
[0029] This invention incorporates an overpressure-resistant tongue to limit the movement of the main spring contact, preventing excessive deformation that could lead to elastic failure and reduced connection performance. The arch-shaped support spring contact allows for elastic deformation within a limited height. Compared to increasing the thickness or number of spring contact contacts, the arch-shaped structure provides sufficient positive pressure while reducing space requirements, making it suitable for miniaturized connection terminal structures. Furthermore, it absorbs energy through elastic deformation during vibration, reducing mechanical stress transmitted to the contact surface and preventing instantaneous disconnection. This provides additional positive pressure to the main spring contact, resulting in a more stable and reliable connection between the main spring contact and the male terminal, meeting higher vibration requirements. Attached Figure Description
[0030] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.
[0031] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.
[0032] Figure 1 A perspective view of the miniaturized connection terminal structure with high vibration resistance provided by this utility model;
[0033] Figure 2 A cross-sectional view of the terminal connection portion provided by this utility model;
[0034] Figure 3 A perspective view of the cable connection part provided by this utility model;
[0035] Figure 4A perspective view of the terminal locking spring provided by this utility model;
[0036] Figure 5 A plan view of the miniaturized connection terminal structure with high vibration resistance provided by this utility model;
[0037] Figure 6 This is a perspective view of the second pressure contact provided in Embodiment 2 of the present invention.
[0038] In the diagram: 1 Terminal connection part; 11 Through slot; 12 Return slot; 13 Plug hole; 14 Plug part; 2 Cable connection part; 21 Wire pressing part; 22 Wire pressing groove; 23 Covering part; 3 Bottom contact; 4 Terminal locking spring; 41 Left wall of spring; 42 Upper wall of spring; 43 First pressing contact part; 44 Right wall of spring; 45 Lower wall of spring; 46 Anti-misinstallation port; 47 Second pressing contact part; 48 Inlet; 5 Main spring; 51 Main spring contact; 6 Support spring; 7 Anti-overpressure tongue. Detailed Implementation
[0039] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0040] Please refer to Figures 1-6 The present invention discloses a miniaturized connection terminal structure with high vibration resistance. The present invention consists of 7 parts, as follows: Figure 1 , Figure 2 , Figure 5As shown, the device includes a terminal connection part 1, a cable connection part 2, a bottom contact 3, a terminal locking spring 4, a main spring 5, a support spring 6, and an overpressure protection tongue 7. The terminal connection part 1 is a hollow tubular structure with a through groove 11 at its top. The terminal connection part 1 is used to connect male terminals. The cable connection part 2 is integrally formed with the terminal connection part 1 and is used to connect cables. The bottom contact 3 is integrally formed with the terminal connection part 1 and is located on the bottom surface of the terminal connection part 1. The terminal locking spring 4 is integrally formed with the terminal connection part 1 and is located at the top of the terminal connection part 1. The terminal locking spring 4 is bent away from the terminal connection part 1. The side wall of the terminal connection part 1 has a return groove 12 for the terminal locking spring 4 to enter after deformation. The main spring 5 is integrally formed with the terminal connection part 1. The main spring 5 passes through the through groove 11 and bends inward toward the terminal connection part 1. The support spring 6 is arched and is formed by bending the lower wall of the terminal locking spring 4 downward. The support spring 6 extends through the through groove 11 to the upper side of the main spring 5 and abuts against the main spring 5 to form a double spring structure. The anti-overpressure tongue 7 is formed by bending part of the side wall of the terminal locking spring 4 inward. The anti-overpressure tongue 7 is located between the main spring 5 and the terminal locking spring 4 and is used to prevent excessive deformation of the main spring 5. The main spring 5 has a main spring contact 51 at the bottom corresponding to the bottom contact 3. The support spring 6 includes a parallel part and a bent part. The parallel part extends obliquely downward and has a bent part. Both the parallel part and the bent part are located above the main spring 5, and the arc-shaped corner of the bent part abuts against the arc-shaped corner of the main spring 5. Figure 5 The unfolded plan view shows that this utility model is manufactured through processes such as cutting, processing, and folding of a sheet-like structure. Three folds form the terminal connection part 1, which is a hollow cuboid tubular structure with a through groove 11 at its top. The main spring piece 5 and the supporting spring piece 6 both enter the hollow structure inside the terminal connection part 1 through the through groove 11. During connection, the terminal connection part 1 is inserted into the female end sleeve and locked in the female end sleeve by the terminal locking spring piece 4. The male terminal is inserted into the terminal connection part 1 and contacts the bottom contact 3. At this time, the main spring piece 5 applies positive pressure from above the male terminal, locking it in place. After the terminals are mated, the male terminal makes gap contact with the main spring piece 5 and the bottom contact 3, achieving electrical signal connection. The shape of the terminal locking spring piece 4 is as follows... Figure 1As shown, the terminal locking spring 4 is formed by three folds. After folding, the terminal locking spring 4 is located on the upper side of the terminal connection part 1. During the process of inserting the terminal connection part 1 into the female end sleeve, the female end sleeve will press the terminal locking spring 4, causing it to deform towards the terminal connection part 1. After the terminal connection part 1 is inserted to the designated position, the terminal locking spring 4 will spring back away from the terminal connection part 1, so that the connecting terminal and the female end sleeve are connected. The main spring 5 is formed by bending the top wall of the terminal connection part 1 inward. The bottom of the main spring 5 is provided with a main spring contact 51, which will contact the male terminal at the position corresponding to the bottom contact 3. The shape and position of the anti-overpressure tongue 7 are as follows. Figure 1 As shown, the overpressure protection tongue 7 has a relatively rigid structure. By setting the overpressure protection tongue 7, it can limit the movement of the main spring 5, preventing the main spring 5 from failing elastically and reducing its connection performance due to excessive deformation. The shape of the supporting spring 6 is as follows: Figure 2 As shown, the support spring 6 specifically includes a parallel portion and a bent portion. The parallel portion extends diagonally downwards and has a bent portion, which together make the support spring 6 form an arch bridge shape. When the male terminal is inserted, it provides additional positive pressure to the main spring 5, making the connection stable and reliable, and meeting higher vibration requirements.
[0041] It is worth noting that arch bridges have many advantages:
[0042] 1. Elastic buffer: When subjected to vibration or impact, the arch-shaped structure can absorb energy through elastic deformation, reduce the mechanical stress transmitted to the contact surface, and avoid instantaneous breakage.
[0043] 2. Adaptive compression: The arch-shaped support spring 6 and the main spring 5 form a surface contact + elastic compression, which can maintain a stable contact pressure under vibration environment and prevent the resistance increase caused by fretting wear.
[0044] 3. High space utilization: The arch bridge structure achieves elastic deformation within a limited height. Compared with increasing the thickness or number of spring sheets, the arch bridge structure can reduce the space occupation while providing sufficient positive pressure, making it suitable for miniaturized connection terminal structures.
[0045] like Figure 3 As shown, the cable connector 2 includes a wire clamping part 21 and a covering part 23. The wire clamping parts 21 are arranged in pairs, and a plurality of wire clamping grooves 22 are formed on the inner sidewall of the wire clamping part 21. The covering parts 23 are arranged in pairs, and the two covering parts 23 are staggered. The shapes of the wire clamping parts 21 and the covering parts 23 are as follows: Figure 3 As shown, the crimping part 21 is connected to the cable core through the crimping groove 22, realizing crimping and conduction with the conductor to form a stable electrical connection. The covering part 23 can deform to clamp the cable inside.
[0046] like Figure 3 , Figure 4As shown, the terminal locking spring 4 includes a left wall 41, an upper wall 42, a right wall 44, and a lower wall 45. The left wall 41 is integrally formed with the side wall of the terminal connection part 1. The upper wall 42 is integrally formed with the left wall 41. The end of the upper wall 42 extends downward to form a first pressing contact 43. The right wall 44 is integrally formed with the upper wall 42. An overpressure prevention tongue 7 is disposed on the right wall 44. The lower wall 45 is integrally formed with the right wall 44. A support spring 6 is disposed at the end of the lower wall 45. The terminal locking spring 4 is formed by three folds to form the left wall 41, upper wall 42, right wall 44, and lower wall 45. The support spring 6 is formed by bending the end of the lower wall 45 towards the main spring 5. The first pressing contact 43 can press on the top of the overpressure prevention tongue 7 to prevent excessive deformation of the terminal locking spring 4. During the insertion of the terminal connection part 1 into the female end sheath, the overpressure prevention tongue 7 is located below the terminal locking spring 4, which can prevent the terminal locking spring 4 from losing its elasticity due to excessive deformation.
[0047] like Figure 4 As shown, a plurality of insertion holes 13 are provided on the side wall of the terminal connection part 1, and a plurality of insertion parts 14 are formed on the top wall of the terminal connection part 1. The insertion parts 14 and the insertion holes 13 are engaged by snap-fit. By providing the insertion holes 13 and the insertion parts 14, the structural strength of the terminal connection part 1 can be enhanced.
[0048] like Figure 4 As shown, the left wall 41, upper wall 42, right wall 44, and lower wall 45 of the spring sheet together form an anti-misalignment opening 46, the cross-section of which is trapezoidal. The function of the anti-misalignment opening 46 is to prevent the terminal from being inserted in the wrong direction.
[0049] like Figure 6 The figure shows the second embodiment of this utility model. Since the second embodiment differs only slightly from the first embodiment, the figure mainly shows the distinguishing features. A second pressure contact 47 is formed at the end of the left wall 41 of the spring contact, and an inlet 48 that mates with the second pressure contact 47 is provided on the side wall of the terminal connection portion 1. In the second embodiment, the end of the left wall 41 of the spring contact extends downward to form the second pressure contact 47, which mates with the inlet 48 to prevent excessive deformation of the terminal locking spring contact 4.
[0050] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.
Claims
1. A miniaturized connection terminal structure with high vibration resistance, characterized in that, include: The terminal connection part (1) is a hollow tubular structure. A through groove (11) is provided on the top of the terminal connection part (1). The terminal connection part (1) is used to connect a male terminal. The cable connection part (2) is integrally formed with the terminal connection part (1), and the cable connection part (2) is used to connect the cable; The bottom contact (3) is integrally formed with the terminal connection part (1), and the bottom contact (3) is disposed on the bottom surface of the terminal connection part (1); Terminal locking spring (4) is integrally formed with the terminal connection part (1). The terminal locking spring (4) is disposed on the top of the terminal connection part (1). The terminal locking spring (4) is bent away from the terminal connection part (1). The side wall of the terminal connection part (1) is provided with a return groove (12) that the terminal locking spring (4) can enter after deformation. The main spring piece (5) is integrally formed with the terminal connection part (1). The main spring piece (5) passes through the through groove (11) and bends into the interior of the terminal connection part (1). The support spring (6) is arched. The support spring (6) is formed by bending the lower wall of the terminal locking spring (4) downward. The support spring (6) extends through the through groove (11) to the upper side of the main spring (5). The support spring (6) abuts against the main spring (5) to form a double spring structure. The overpressure prevention tongue (7) is formed by bending a portion of the side wall of the terminal locking spring (4) inward. The overpressure prevention tongue (7) is disposed between the main spring (5) and the terminal locking spring (4). The overpressure prevention tongue (7) is used to prevent the main spring (5) from being excessively deformed.
2. The miniaturized connection terminal structure with high vibration resistance as described in claim 1, characterized in that, The supporting spring (6) includes a parallel part and a bent part. The parallel part extends obliquely downward and is provided with a bent part. Both the parallel part and the bent part are located above the main spring (5). The arc-shaped corner of the bent part abuts against the arc-shaped corner of the main spring (5).
3. The miniaturized connection terminal structure with high vibration resistance as described in claim 1, characterized in that, The cable connector (2) includes: The pressure part (21) is arranged in pairs, and the inner sidewall of the pressure part (21) is provided with a plurality of pressure grooves (22); The covering parts (23) are arranged in pairs, and the two covering parts (23) are staggered from each other.
4. The miniaturized connection terminal structure with high vibration resistance as described in claim 1, characterized in that, The bottom of the main spring plate (5) is provided with a main spring plate contact (51) at a position corresponding to the bottom contact (3).
5. The miniaturized connection terminal structure with high vibration resistance as described in claim 1, characterized in that, The terminal locking spring (4) includes: The left wall (41) of the spring is integrally formed with the side wall of the terminal connection part (1); The upper wall (42) of the spring is integrally formed with the left wall (41) of the spring, and the end of the upper wall (42) of the spring extends downward to form a first pressure contact (43); The right wall (44) of the spring is integrally formed with the upper wall (42) of the spring, and the anti-overpressure tongue (7) is disposed on the right wall (44) of the spring; The lower wall (45) of the spring is integrally formed with the right wall (44) of the spring, and the supporting spring (6) is disposed at the end of the lower wall (45) of the spring.
6. The miniaturized connection terminal structure with high vibration resistance as described in claim 1, characterized in that, The terminal connection part (1) has a plurality of insertion holes (13) on its side wall and a plurality of insertion parts (14) on its top wall. The insertion parts (14) and the insertion holes (13) are engaged by snap-fit.
7. The miniaturized connection terminal structure with high vibration resistance as described in claim 5, characterized in that, The left wall (41), upper wall (42), right wall (44), and lower wall (45) of the spring sheet together form an anti-misalignment opening (46), and the cross-section of the anti-misalignment opening (46) is trapezoidal.
8. The miniaturized connection terminal structure with high vibration resistance as described in claim 7, characterized in that, The end of the left wall (41) of the spring is provided with a second pressure contact (47), and the side wall of the terminal connection part (1) is provided with an inlet (48) that cooperates with the second pressure contact (47).