A dual-contact spring piece terminal and connector
Patent Information
- Application Number
- CN202521758639.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-18
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-08-18
AI Technical Summary
目前，常见的连接器弹片端子一般采用单边设置一个弹性触点完成与对接结构的导通，单触点导接接触面积小，导致对插端子在水平面上的保持力和摩擦力小，很容易松脱，同时由于接触面积小，直接导致阻抗增大，影响导接性能
[0017](1)采用双触点结构，导接接触面积增加，能增加与对插端子在插接平面上的保持力和摩擦力，保证该弹片端子和对插端子的稳定接触，同时由于接触面积增加，有效降低阻抗；
Smart Images
Figure CN224652761U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connectors, and in particular to a double-contact spring terminal and connector. Background Technology
[0002] In electronic device connection systems, contacts are the core components for achieving circuit conduction, and their contact stability directly determines the operational reliability of the device. Currently, common connector spring terminals typically use a single elastic contact on one side to achieve conduction with the mating structure. The small contact area of a single contact results in low holding force and friction between the mating terminals on a horizontal plane, making them prone to loosening. Simultaneously, the small contact area directly increases impedance, affecting conduction performance. Furthermore, the single-contact design itself has a low tolerance for positional deviations. Traditional guide structures have short guide strokes and limited correction capabilities, failing to ensure effective contact when pin offset exceeds a certain range. Utility Model Content
[0003] Based on this, the purpose of this utility model is to provide a double-contact spring terminal, which adopts a double-contact structure, increases the conductive contact area, and can increase the holding force and friction force with the mating terminal on the mating plane, ensuring stable contact between the spring terminal and the mating terminal. At the same time, due to the increased contact area, the impedance is effectively reduced.
[0004] Another objective of this invention is to provide a connector that, by utilizing the reverse-extending double-contact spring terminals and the guiding structure of the external components, can overcome the contact problems caused by misaligned insertion of the pins, thereby achieving contact stability of the connector.
[0005] A dual-contact spring terminal includes:
[0006] The support body and the guide body are extended and connected; the guide body is provided with a first guide structure and a second guide structure, the first guide structure is provided with a first elastic arm, a connecting part and a first contact part, one end of the first elastic arm is connected to the support body and the other end is connected to the connecting part, the first contact part and the second guide structure are respectively extended and connected to the connecting part in opposite directions; the second guide structure is provided with a second contact part that protrudes in the same direction as the first contact part.
[0007] Furthermore, the first spring arm is in two sets, respectively spaced apart on both sides of the second guide structure.
[0008] Furthermore, the connecting portion, the first elastic arm, and the supporting body form an avoidance hole, and the cut width of the avoidance hole near the supporting body is smaller than the cut width near the connecting portion.
[0009] Furthermore, the first elastic arm includes an extended and connected first bent segment and a second bent segment. The bending angle of the first bent segment relative to the support body is a first included angle, and the bending angle of the second bent segment relative to the support body is a second included angle, the second included angle being greater than the first included angle.
[0010] Furthermore, the first spring arm is arc-shaped, extending toward the first contact portion, and its protrusion direction is opposite to the protrusion direction of the first contact portion.
[0011] Furthermore, the second guide structure also includes a second spring arm, one end of which is connected to the second contact portion and the other end of which is connected to the connecting portion.
[0012] Furthermore, the sliding trajectories of the first contact portion and the second contact portion are collinear during the insertion process.
[0013] Furthermore, the protrusion height of the first contact portion is greater than the protrusion height of the second contact portion.
[0014] Furthermore, the first guiding structure also includes a first inlet portion extending from the first contact portion toward a direction away from the connecting portion.
[0015] A connector comprising: the dual-contact spring-loaded terminal as described in this utility model.
[0016] The beneficial effects of this utility model are as follows:
[0017] (1) The double contact structure is adopted, which increases the conductive contact area, thereby increasing the holding force and friction between the contact terminal and the mating terminal on the mating plane, ensuring stable contact between the spring contact terminal and the mating terminal. At the same time, due to the increased contact area, the impedance is effectively reduced.
[0018] (2) The first contact part and the second contact part are extended in opposite directions relative to the connecting part, which eliminates the need for excessive bending steps and simplifies the production mold and production process.
[0019] (3) By setting clearance holes with different cut widths, it is beneficial to stabilize the connection between the first spring arm and the support body, reduce the deformation stress of the first spring arm, and also facilitate the miniaturization design of the spring terminal.
[0020] The sliding trajectories of the first and second contact parts are collinear during the insertion process. The first contact part can remove dirt during the sliding process, and the second contact part is connected to the clean contact surface, which can effectively improve the contact reliability.
[0021] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description
[0022] Figure 1 A schematic diagram of the structure of the spring-loaded terminal provided in the embodiments of this application. Figure 1 ;
[0023] Figure 2 A schematic diagram of the structure of the spring-loaded terminal provided in the embodiments of this application. Figure 2 ;
[0024] Figure 3 A schematic diagram of the structure of the spring-loaded terminal provided in the embodiments of this application. Figure 3 ;
[0025] Figure 4 This is a schematic diagram of the connector structure provided in an embodiment of this application;
[0026] Figure 5 This is a cross-sectional view of the connector.
[0027] In the figure: 10-spring terminal; 11-conductor body; 111-first conductor structure; 1111-first contact part; 1112-first guide part; 1113-first spring arm; 1113a-first bending section; 1113b-second bending section; 1114-connecting part; 112-second conductor structure; 1121-second contact part; 1122-second spring arm; 113-avoiding hole; 12-support body; 121-barbed structure; 13-welding part; 20-plastic shell; 21-insertion cavity; 211-interlocking port; 212-slot; 213-baffle. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0030] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0031] Please see Figure 1-3 This application provides a dual-contact spring terminal, including an extended support body 12 and a conductive body 11. The conductive body 11 has a first conductive structure 111 and a second conductive structure 112. The first conductive structure 111 has a first spring arm 1113, a connecting portion 1114, and a first contact portion 1111. One end of the first spring arm 1113 is connected to the support body 12, and the other end is connected to the connecting portion 1114. The first contact portion 1111 and the second conductive structure 112 extend in opposite directions and are connected to the connecting portion 1114. The second conductive structure 112 has a second contact portion 1121 that protrudes in the same direction as the first contact portion 1111. The spring terminal 10 provided in this application adopts a dual-contact structure, which increases the conductive contact area, thereby increasing the holding force and friction with the mating terminal on the horizontal plane, ensuring stable contact between the spring terminal and the mating terminal. At the same time, due to the increased contact area, the impedance is effectively reduced. Meanwhile, by utilizing the guide structure of the double-contact spring terminal and the external component, the contact problem caused by misaligned insertion of the pins can be overcome, thereby achieving contact stability of the spring terminal. In addition, the first contact portion 1111 and the second contact portion 1121 are arranged to extend in the opposite direction to the connecting portion 1114, eliminating the need for complex bending steps and simplifying the production mold and production process.
[0032] Furthermore, in some embodiments, there are two sets of first spring arms 1113, which are spaced apart on both sides of the second guide structure 112. Thus, with both sets of first spring arms 1113 simultaneously connected to the connecting portion 1114 and supporting the first contact portion 1111, the positive force between the first contact portion 1111 and the mating terminal increases, which is more conducive to stable contact between the spring terminal 10 and the mating terminal. In this configuration, the end of the second guide structure 112 is connected to the connecting portion 1114, and the force generated when the second contact portion 1121 abuts against the mating terminal extends to the first spring arms 1113. Simultaneously, the first spring arms 1113 elastically support the second contact portion 1121, resulting in a more uniform distribution of positive pressure between the first contact portion 1111 and the second contact portion 1121 and the mating terminal.
[0033] In a preferred embodiment, the sliding trajectories of the first contact portion 1111 and the second contact portion 1121 are collinear during the insertion process. During the insertion process, the first contact portion 1111 first contacts the mating terminal and can remove dirt during the sliding process, ensuring that the contact surface is clean. The second contact portion 1121 is connected to the clean contact surface, which can effectively improve the contact reliability.
[0034] Furthermore, in some embodiments, the protrusion height of the first contact portion 1111 is greater than the protrusion height of the second contact portion 1121. During the mating process, the mating terminal first abuts against the first contact portion 1111, and the first contact portion 1111 is squeezed. The first elastic arm 1113 is subjected to force and undergoes elastic deformation. The first contact portion 1111 gradually moves to be coplanar with the second contact portion 1121, and the reaction force of the first contact portion 1111 and the second contact portion 1121 on the mating terminal is more uniform.
[0035] Furthermore, the connecting portion 1114, the first spring arm 1113, and the supporting body 12 form a clearance hole 113. The width of the cut at the end of the clearance hole 113 near the supporting body 12 is smaller than the width of the cut at the end near the connecting portion 1114. In this configuration, the width of the first spring arm 1113 near the supporting body 12 is larger, and the width of the end near the connecting portion 1114 is smaller. Without increasing the size of the guide body 11, the second guide structure 112 is movably disposed between the two sets of first spring arms 1113, which can maintain the miniaturized design of the spring terminal 10. At the same time, the width of the first spring arm 1113 near the supporting body 12 is larger than the width of the other end, which is conducive to the stable connection between the first spring arm 1113 and the supporting body 12.
[0036] Furthermore, in some embodiments, the first spring arm 1113 includes an extended first bent section 1113a and a second bent section 1113b. The first bent section 1113a bends at a first included angle relative to the support body 12, and the second bent section 1113b bends at a second included angle relative to the support body 12, with the second included angle being greater than the first included angle. When the mating terminal is inserted into the spring terminal 10, the end is compressed, the first bent section 1113a undergoes elastic deformation, and the first contact portion 1111 moves outward, which facilitates the smooth insertion of the mating terminal. Then, the second bent section 1113b, with a larger bending angle, can support the first contact portion 1111 to provide greater positive pressure to the mating terminal, so that the spring terminal 10 and the mating terminal are stably connected.
[0037] Preferably, the length of the first bending segment 1113a is greater than that of the second bending segment 1113b, which helps to reduce the positive pressure of the spring terminal 10 in the initial stage of mating, reduce the friction between the spring terminal 10 and the mating terminal, and improve the smoothness of the mating process.
[0038] Furthermore, in some other embodiments, the first elastic arm 1113 is arc-shaped, extending toward the first contact portion 1111, and its protrusion direction is opposite to that of the first contact portion 1111. When the arc-shaped first elastic arm 1113 is bent under force, its radius gradually increases, which will not be described in detail here.
[0039] Furthermore, in some embodiments, the first guiding structure 111 further includes a first guide portion 1112 that extends from the first contact portion 1111 in a direction away from the connecting portion 1114, for guiding the mating terminal to slide into and elastically connect with the first contact portion 1111 and the second contact portion 1121. It is understood that, in its natural state, the length of the first guide portion 1112 should be such that the mating terminal does not touch the free end of the first guide portion 1112, so as to prevent the mating terminal from bending the spring terminal 10 and affecting the normal mating of the two.
[0040] Furthermore, in some embodiments, the second guiding structure 112 further includes a second elastic arm 1122, one end of which is connected to the second contact portion 1121, and the other end is connected to the connecting portion 1114. This effectively extends the lever arm length of the second contact portion 1121, which helps to reduce material stress and improve mechanical life. When the second contact portion 1121 is subjected to force, the first elastic arm 1113 and the second elastic arm 1122 can undergo elastic deformation simultaneously. Preferably, the length of the second elastic arm 1122 is less than the length of the second bent section 1113b, which can appropriately increase the positive force on the second contact portion 1121.
[0041] Furthermore, in some embodiments, the support body 12 has protruding barb structures 121 on both sides along its width direction for interference fixing with the plastic shell 20. The end of the support body 12 away from the guide body 11 is also provided with a welding part 13 for welding to the end of the outer plate.
[0042] Please see Figure 1-5 This application embodiment also provides a connector, including the aforementioned dual-contact spring terminal 10 and a plastic housing 20, with the spring terminal 10 inserted into the plastic housing 20. The plastic housing 20 has a insertion cavity 21, and the spring terminal 10 array is fixedly connected to the opposite side walls of the insertion cavity 21. Further, the insertion cavity 21 has a mating opening 211 at its end, and the inner wall of the insertion cavity 21 has a slot 212 along the mating direction. The slot 212 has a baffle 213 at one end of the mating opening 211. Preferably, the baffle 213 covers the free end of the first guide portion 1112, which can prevent the mating terminal from touching the free end of the first guide portion 1112 during the insertion process through the mating opening 211, thus avoiding abnormal deformation of the spring terminal 10 and preventing the spring terminal 10 and the mating terminal from being properly inserted.
[0043] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows:
[0044] (1) The double contact structure is adopted, which increases the conductive contact area, thereby increasing the holding force and friction between the contact terminal and the mating terminal on the mating plane, ensuring stable contact between the spring contact terminal and the mating terminal. At the same time, due to the increased contact area, the impedance is effectively reduced.
[0045] (2) The first contact portion and the second contact portion are extended in opposite directions relative to the connecting portion, eliminating the need for complex bending steps and simplifying the production mold and production process;
[0046] (3) By setting clearance holes with different cut widths, it is beneficial to stabilize the connection between the first spring arm and the support body, reduce the deformation stress of the first spring arm, and also facilitate the miniaturization design of the spring terminal.
[0047] (4) The sliding trajectories of the first contact part and the second contact part are collinear during the insertion process. The first contact part can play a role in cleaning dirt during the sliding process, and the second contact part is connected to the clean contact surface, which can effectively improve the contact reliability.
[0048] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.
Claims
1. A double-contact spring-loaded terminal, characterized in that, include: The support body and the guide body are extended and connected; the guide body is provided with a first guide structure and a second guide structure, the first guide structure is provided with a first elastic arm, a connecting part and a first contact part, one end of the first elastic arm is connected to the support body and the other end is connected to the connecting part, the first contact part and the second guide structure are respectively extended and connected to the connecting part in opposite directions; the second guide structure is provided with a second contact part that protrudes in the same direction as the first contact part. The first elastic arm is in two sets and is respectively spaced on both sides of the second guide structure; the connecting part, the first elastic arm and the supporting body surround to form a clearance hole, and the cut width of the clearance hole near the supporting body is smaller than the cut width near the connecting part.
2. A double-contact spring terminal according to claim 1, characterized in that: The first flexible arm includes an extended and connected first bent section and a second bent section. The bending angle of the first bent section relative to the supporting body is a first included angle, and the bending angle of the second bent section relative to the supporting body is a second included angle. The second included angle is greater than the first included angle.
3. A dual-contact spring terminal according to claim 2, characterized in that: The first elastic arm is arc-shaped, extending toward the first contact portion, and its protrusion direction is opposite to that of the first contact portion.
4. A double-contact spring terminal according to claim 1, characterized in that: The second guide structure also includes a second spring arm, one end of which is connected to the second contact portion and the other end of which is connected to the connecting portion.
5. A double-contact spring terminal according to claim 1, characterized in that: The sliding trajectories of the first contact portion and the second contact portion are collinear during the insertion process.
6. A double-contact spring terminal according to claim 1, characterized in that: The protrusion height of the first contact portion is greater than that of the second contact portion.
7. A double-contact spring terminal according to claim 1, characterized in that: The first guide structure further includes a first inlet portion extending from the first contact portion toward a direction away from the connection portion.
8. A connector, characterized in that, include: The spring-loaded terminal according to any one of claims 1-7.