Multi-contact floating terminal and floating connector

Abstract

The utility model relates to a kind of multi-contact floating terminal and floating connector.The utility model described multi-contact floating terminal, including: fixed part, for with external substrate fixed connection;Clamping portion, including the first clamping arm and the second clamping arm of interval arrangement, one end of the first clamping arm and / or the second clamping arm is connected to the fixed part;The first clamping portion is equipped with first contact and the first spring arm of supporting the first contact, the first spring arm is bent, and at least in a bending place, it is equipped with the convex of a certain length.This utility model described contact floating terminal, by first spring arm increase difference and set convex, when terminal is inserted, it can effectively disperse stress concentration, so that terminal has excellent elasticity and has enough positive force, guarantee the reliability of terminal contact.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a multi-contact floating terminal and a floating connector. Background Technology

[0002] Connectors, as core components in electronic devices that enable signal and current transmission, directly determine the operational stability of the entire device through the contact reliability of their terminals. They are widely used in consumer electronics, automotive electronics, industrial control, and other fields. During the operation of a connector, the terminals need to form stable contact through mating and insertion with the adapter terminals. The positive force and resilience of the terminal contact points are key indicators for ensuring stable contact resistance and preventing signal interruption or abnormal current transmission. In existing technologies, the contact point lever arm structure of some connector terminals is relatively simplified, typically employing an integrated, straight, single-curve, or bent structure. While this design offers certain conveniences in manufacturing processes, it exhibits significant performance defects during actual mating and unmating operations. When terminals are mated, the contact point lever arm requires deformation under external force to achieve a proper fit. The stress transmission path of the lever arm lacks a smooth transition region, and its local stiffness and stress dispersion are insufficient, leading to stress concentration in the deformation-concentrated areas of the lever arm. Consequently, with increasing mating and unmating cycles or prolonged exposure to complex operating conditions such as vibration and temperature changes, fatigue damage gradually occurs in the stress concentration areas. This manifests as a decline in the elastic properties of the terminal material, i.e., a decrease in the lever arm's resilience. When fatigue damage accumulates to a certain extent, irreversible plastic deformation and even micro-cracks may occur in the lever arm, directly resulting in a significant deficiency in the terminal's positive force, severely impacting the connector's lifespan and the operational reliability of electronic equipment. Utility Model Content

[0003] Based on this, the purpose of this utility model is to provide a multi-contact floating terminal, which increases the step difference by using a first spring arm and provides a protrusion on the first spring arm. When the terminals are inserted, stress concentration can be effectively dispersed, so that the terminals have excellent elasticity and sufficient positive force, ensuring the reliability of terminal contact.

[0004] Another objective of this invention is to provide a floating connector that achieves floating connection of the connector by setting multi-contact floating terminals, while ensuring the stability of terminal mating, thereby improving the service life of the connector and the operational reliability of electronic equipment.

[0005] A multi-contact floating terminal includes: The fixing part is used to fix it to the external substrate; The clamping part includes a first clamping arm and a second clamping arm arranged at intervals, one end of the first clamping arm and / or the second clamping arm is connected to the fixing part; the first clamping arm is provided with a first contact point and a first elastic arm supporting the first contact point, the first elastic arm is bent, and at least one bend is provided with a protrusion of a certain length.

[0006] Furthermore, the second clamping arm is provided with a second spring arm and a second contact point, the second contact point protruding toward one side of the first clamping arm.

[0007] Furthermore, the first clamping arm is also provided with a first fixed section, which is connected to the end of the first spring arm away from the first contact point; the second clamping arm is also provided with a second fixed section, which is connected to the end of the second spring arm away from the second contact point; The clamping part further includes a first connecting part, which is connected to the first fixed section and the second fixed section.

[0008] Preferably, the first contact and the second contact are misaligned so that the first contact is located between the second contact and the second fixed segment in the insertion direction.

[0009] Preferably, the convex bulge is located at the bend of the first elastic arm near the first fixed section.

[0010] Furthermore, the clamping part also includes a third clamping arm, which is elastically connected to the first clamping arm or the second clamping arm and is disposed between the first clamping arm and the second clamping arm; the third clamping arm is provided with a third contact point protruding toward the first clamping arm or the second clamping arm.

[0011] Furthermore, the first spring arm is bent in the opposite direction to the first contact point; the third contact point is located directly above the recess of the first spring arm and protrudes toward the side of the second clamping arm.

[0012] Furthermore, the multi-contact floating terminal also includes: The floating part is provided with several bent sections; the two ends of the floating part are respectively connected to the fixed part and the clamping part, so that the fixed part and the clamping part are elastically floatingly connected.

[0013] This utility model provides a floating connector, comprising: Terminal housing, floating body floatingly connected to the terminal housing, and multi-contact floating terminal; The fixing part is fixed to the terminal housing, and the clamping part is fixed to the floating body.

[0014] Furthermore, the floating connector further includes: A fixing piece, one end of which is fixedly connected to the end of the terminal housing, and the other end is used for fixing to an external substrate. The beneficial effects of this utility model are: (1) By increasing the step difference through the first spring arm and setting the convex hull, stress concentration can be effectively dispersed when the terminals are inserted, so that the terminals have excellent elasticity and sufficient positive force, ensuring the reliability of terminal contact; (2) Multiple contact points are set up by multiple clamping arms to connect with the mating terminals, ensuring the reliability of contact in harsh vibration environments; (3) By placing the fixing plate at both ends of the connector, the connector is not adequately protected when subjected to peeling force because the fixing plate is placed on the same side or opposite side of the substrate connection section. This can easily cause the substrate connection section to detach from the substrate, affecting the reliability of the floating terminal welding.

[0015] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the floating terminal provided in an embodiment of this application; Figure 2 A cross-sectional view of a floating terminal provided in an embodiment of this application; Figure 3 A schematic diagram of the structure of the clamping part of the floating terminal provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of the floating connector provided in an embodiment of this application; Figure 5 A cross-sectional view of a floating connector provided in an embodiment of this application.

[0017] In the figure: 100-Floating terminal; 10-Clamping part; 11-First clamping arm; 111-First contact; 112-First spring arm; 1121-Protrusion; 113-First fixing section; 1131-Barbed structure; 12-Second clamping arm; 121-Second contact; 122-Second spring arm; 123-Second fixing section; 13-Third clamping arm; 131-Third contact; 14-First connecting part; 15-Second connecting part; 20-Floating part; 21-Bending section; 30-Fixing part; 31-Baseboard connecting section; 32-Housing connecting section; 200-Terminal housing; 300-Floating body; 400-Fixing piece. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] 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.

[0021] In existing technologies, the contact point lever arm structure of some connector terminals is relatively simplified, typically employing an integrated, straight, single-curve, or bent structure. While this design offers certain conveniences in manufacturing processes, it exhibits significant performance defects during actual mating and unmating operations. When terminals are mated, the contact point lever arm requires deformation under external force to achieve a proper fit. The stress transmission path of the lever arm lacks a smooth transition region, and its local stiffness and stress dispersion are insufficient, leading to stress concentration in the deformation-concentrated areas of the lever arm. Consequently, with increasing mating and unmating cycles or prolonged exposure to complex operating conditions such as vibration and temperature changes, fatigue damage gradually occurs in the stress concentration areas. This manifests as a decline in the elastic properties of the terminal material, i.e., a decrease in the lever arm's resilience. When fatigue damage accumulates to a certain extent, irreversible plastic deformation and even micro-cracks may occur in the lever arm, directly resulting in a significant deficiency in the terminal's positive force, severely impacting the connector's lifespan and the operational reliability of electronic equipment.

[0022] To address the aforementioned potential contact issues, existing technologies often improve the situation by increasing the thickness of the terminal material or using higher-strength elastic materials. However, increasing the material thickness leads to an increase in the overall stiffness of the terminal, which exacerbates stress concentration during insertion and removal, and also increases the size and cost of the connector. While using high-strength materials can improve fatigue resistance to some extent, it cannot fundamentally solve the stress concentration problem caused by the lever arm structure design. It is still difficult to effectively ensure the stability and resilience of the terminal's positive force, and cannot meet the current development requirements of electronic devices for connector miniaturization, high reliability, and long lifespan.

[0023] Based on this, please refer to Figure 1-3 This application provides a multi-contact floating terminal, including an extended fixed portion 30 and a clamping portion 10; the clamping portion 10 is used for floating insertion with a mating terminal. Specifically, the clamping portion 10 includes a first clamping arm 11 and a second clamping arm 12 disposed opposite to each other, one end of the first clamping arm 11 and / or the second clamping arm 12 being connected to the fixed portion 30; the first clamping arm 11 is provided with a first contact 111 and a first spring arm 112 supporting the first contact 111, the first spring arm 112 being bent in the opposite direction to the first contact 111, used to form a step to increase the elasticity of the first spring arm 112 and increase the positive force of the first contact 111.

[0024] Furthermore, the first elastic arm 112 is provided with at least one protrusion 1121 of a certain length. These protrusions 1121 can change the stress propagation path and effectively disperse the concentrated stress at the step difference of the first elastic arm 112, so as to avoid fatigue cracks and fractures of the first elastic arm 112 at the step difference, thereby ensuring the elasticity and positive force of the first elastic arm 112 while ensuring the stability of the first elastic arm 112.

[0025] Please see Figure 3 Furthermore, in some embodiments, the first clamping arm 11 is also provided with a first fixed section 113, which is connected to the end of the first elastic arm 112 away from the first contact point 111. At the same time, the first fixed section 113 is provided with a barb structure 1131 for fixed connection with the floating body, so that the first clamping arm 11 is fixedly inserted into the floating body, while supporting the elastic deformation of the first elastic arm 112.

[0026] Specifically, in this embodiment, the protrusion 1121 is provided at the bend of the first elastic arm 112 near the first fixed section 113. As an example, the first elastic arm 112 is bent into a trapezoidal protrusion, and the protrusion 1121 is provided on one side of the first elastic arm 112 connecting to the first fixed section 113, extending to cover the bends at both ends of the side waist, to release stress at the connection between the first elastic arm 112 and the first fixed section 113. In other embodiments, the first elastic arm 112 may also be bent into an arc or other curved shape, with the protrusion 1121 provided at the bend where stress is concentrated, to release some stress and improve the stability of the first elastic arm 112; details will not be elaborated here.

[0027] Preferably, the width of the convex bulge 1121 is 0.2 to 0.6 times the width of the first elastic arm 112. Within this size range, local stress can be reduced without changing the overall stiffness and deformation characteristics of the elastic piece.

[0028] Please see Figure 1 and Figure 3 Furthermore, in some embodiments, the second clamping arm 12 is provided with a second spring arm 122 and a second contact 121. The second contact 121 protrudes toward the first clamping arm 11. The mating terminals are clamped simultaneously from opposite sides by the first contact 111 and the second contact 121, which can ensure the reliability of contact in harsh vibration environments.

[0029] Furthermore, in some embodiments, the second clamping arm 12 is further provided with a second fixing section 123, which is connected to the end of the second spring arm 122 away from the second contact point 121. Similarly, the second fixing section 123 is provided with a barb structure 1131 for fixing to the floating body, thereby fixing the second clamping arm 12 inside the floating body 300 to support the elastic deformation of the second spring arm 122. It can be understood that the connection between the fixing part 30 and the clamping part 10 is achieved by extending and connecting the first fixing section 113 and / or the second fixing section 123 to the fixing part 30. Preferably, in this embodiment, the fixing part 30 is connected by the first fixing section 113 to simplify the structure of the floating terminal.

[0030] Preferably, in this embodiment, the first contact 111 and the second contact 121 are staggered so that the first contact 111 is located between the second contact 121 and the second fixed section 123 in the insertion direction. This makes the force on the insertion terminal more balanced and allows it to make stable contact with the floating terminal.

[0031] Please see Figure 1 and Figure 3Furthermore, the clamping part 10 also includes a first connecting part 14 for connecting the first clamping arm 11 and the second clamping arm 12. Specifically, the two ends of the first connecting part 14 are elastically connected to the first fixed section 113 and the second fixed section 123 respectively, forming a U-shaped structure, which facilitates the overall insertion of the floating terminal and the floating body.

[0032] Furthermore, in some embodiments, the clamping portion 10 further includes a third clamping arm 13 and a second connecting portion 15. The third clamping arm 13 is elastically connected to the first clamping arm 11 or the second clamping arm 12 via the second connecting portion 15, such that the third clamping arm 13 is disposed between the first clamping arm 11 and the second clamping arm 12. The third clamping arm 13 is provided with a third contact 131 to increase the connection between the contact point and the mating end, ensuring the reliability of the contact in harsh vibration environments. It is understood that the third contact 131 may protrude in the same direction as the first contact 111 or the second contact 121.

[0033] Preferably, the third contact 131 is located near the first spring arm 112 and directly above the recess of the first spring arm 112, protruding in the same direction as the first contact 111. In this way, the first spring arm 112 can provide clearance space for the elastic deformation of the third clamping arm 13. When the third contact 131 is squeezed by the mating terminal, the third clamping arm 13 will not squeeze the first spring arm 112, thus affecting the elastic force of the first spring arm 112.

[0034] Preferably, in this embodiment of the application, the third clamping arm 13 is connected to the second fixed section 123 through the second connecting part 15, and the elastic deformation of the third clamping arm 13 is supported by the second fixed section 123.

[0035] Furthermore, the multi-contact floating terminal 100 also includes a floating part 20, which has several bent sections 21, and the two ends of the floating part 20 are respectively connected to the fixing part 30 and the clamping part 10, so that the fixing part 30 and the clamping part 10 are elastically floatingly connected.

[0036] Furthermore, in some embodiments, the fixing part 30 is provided with a substrate connecting section 31 for fixing to an external substrate and a housing connecting section 32 for fixing the terminal housing to the substrate.

[0037] Please see Figure 1-5This application also provides a floating connector, including: a terminal housing 200, a floating body 300 floatingly connected to the terminal housing 200, and a floating terminal 100. A fixing part 30 is fixedly connected to the terminal housing 200, and a clamping part 10 is fixedly connected to the floating body 300, thereby achieving a floating connection between the floating body 300 and the terminal housing 200. This allows for precise alignment during mating through fine-tuning of the floating body 300, avoiding damage to the terminals caused by forced insertion and removal, and maintaining a stable contact state for the connector over a long period.

[0038] Furthermore, the floating connector also includes a fixing piece 400, one end of which is fixed to the end of the terminal housing 200, and the other end is used to fix it to the external substrate. By fixing the terminal housing 200 to the external substrate, effective contact between the floating terminal 100 and the substrate is ensured. The fixing piece 400 is fixed to the end of the terminal housing 200, and the multi-contact floating terminals 100 are arranged in an array along the length of the terminal housing 200, so that the substrate connection section 31 is located on one or both sides of the terminal housing 200. This arrangement can avoid insufficient protection of the solder joints of the floating terminal 100 when the fixing piece 400 and the substrate connection section 31 are located on the same side or opposite side of the terminal housing 200, which could lead to the substrate connection section 31 detaching from the substrate and affecting the reliability of the soldering of the floating terminal 100.

[0039] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows: (1) By increasing the step difference through the first spring arm and setting the convex hull, stress concentration can be effectively dispersed when the terminals are inserted, so that the terminals have excellent elasticity and sufficient positive force, ensuring the reliability of terminal contact; (2) Multiple contact points are set up by multiple clamping arms to connect with the mating terminals, ensuring the reliability of contact in harsh vibration environments; By placing the fixing plates at both ends of the connector, the connector is protected from insufficient protection of the floating terminal solder joints when the connector is subjected to peeling force, which may cause the substrate connection section to detach from the substrate and affect the reliability of the floating terminal soldering.

[0040] 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 multi-contact floating terminal, characterized in that, include: The fixing part is used to fix it to the external substrate; The clamping part includes a first clamping arm and a second clamping arm that are spaced apart, and one end of the first clamping arm and / or the second clamping arm is connected to the fixing part; the first clamping arm is provided with a first contact point and a first elastic arm that supports the first contact point, the first elastic arm is bent and has a protrusion with a certain length at at least one bend.

2. A multi-contact floating terminal according to claim 1, characterized in that: The second clamping arm is provided with a second spring arm and a second contact point, with the second contact point protruding toward one side of the first clamping arm.

3. A multi-contact floating terminal according to claim 2, characterized in that: The first clamping arm is further provided with a first fixed section, which is connected to the end of the first spring arm away from the first contact point; the second clamping arm is further provided with a second fixed section, which is connected to the end of the second spring arm away from the second contact point; The clamping part further includes a first connecting part, which is connected to the first fixed section and the second fixed section.

4. A multi-contact floating terminal according to claim 3, characterized in that: The first contact and the second contact are offset so that the first contact is located between the second contact and the second fixed segment in the insertion direction.

5. A multi-contact floating terminal according to claim 3, characterized in that: The convex bulge is located at the bend of the first elastic arm near the first fixed section.

6. A multi-contact floating terminal according to claim 1, characterized in that: The clamping part further includes a third clamping arm, which is elastically connected to the first clamping arm or the second clamping arm and is disposed between the first clamping arm and the second clamping arm; the third clamping arm is provided with a third contact point protruding toward the first clamping arm or the second clamping arm.

7. A multi-contact floating terminal according to claim 6, characterized in that: The first spring arm is bent in the opposite direction to the first contact point; the third contact point is located directly above the recess of the first spring arm and protrudes toward the side of the second clamping arm.

8. A multi-contact floating terminal according to claim 1, characterized in that, Also includes: The floating part is provided with several bent sections; the two ends of the floating part are respectively connected to the fixed part and the clamping part, so that the fixed part and the clamping part are elastically floatingly connected.

9. A floating connector, characterized in that, include: Terminal housing, floating body floatingly connected to the terminal housing, and multi-contact floating terminal as described in any one of claims 1-8; The fixing part is fixed to the terminal housing, and the clamping part is fixed to the floating body.

10. A floating connector according to claim 9, characterized in that, Also includes: A fixing piece, one end of which is fixed to the end of the terminal housing, and the other end is used to fix it to the external substrate.

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