A short spring with a soldering leg

Abstract

A kind of short spring with welding leg, including substrate, the tensioning portion formed by reverse bending from the longitudinal one end of the substrate, the elastic arm formed by extending from the oblique upper portion of the tensioning portion and towards the end away from the tensioning portion, the support arm formed by bending from the end of the elastic arm towards the substrate direction and extending towards the end close to the tensioning portion direction, the pre-pressing portion is formed by protruding on the lateral sides of the support arm, the wing portion is formed by bending and extending upwards on the lateral sides of the substrate, the pre-pressing space for pressing the pre-pressing portion is opened in the wing portion, the welding leg is formed by bending downwards on the lateral sides of the substrate close to the end of the tensioning portion, and the pre-pressing space is open towards the side of the tensioning portion.The spring can consider stability and product size.

Description

Technical Field

[0001] This utility model relates to the field of electrical connectors, and in particular to a short spring with solder feet. Background Technology

[0002] Spring connectors are widely used in electronic devices for connecting antenna signals or enabling single-channel conduction of components. Springs are typically mounted on printed circuit boards (PCBs) and transmit signals to the PCB through contact with the mating object via an elastic arm. Due to limited internal space in electronic devices, spring connectors need to minimize product size while ensuring stable soldering and fixation to the PCB. For example, patent application CN202421330034.2 discloses a short spring connector, including a substrate, a tensioning portion formed by bending backwards from the rear end of the substrate, an elastic arm extending obliquely forward and upwards from the tensioning portion, and a contact portion formed at the top of the elastic arm. The front end of the substrate forms a fixing portion that is soldered and fixed to the PCB, and a free portion extending backwards from the fixing portion that is not soldered and fixed to the PCB. The tensioning portion is formed by bending backwards from the rear end of the free portion. To shorten the product length, the substrate at the tensioning portion position is not soldered to the PCB. This technical solution has low resistance to external impact and is prone to weak soldering. Utility Model Content

[0003] Based on this, the present invention provides a short spring with a welding foot, which can balance the length of the product and the welding strength.

[0004] To solve the above-mentioned technical problems, this application provides a short spring with solder feet, including a substrate, a tensioning portion formed by bending backward from one longitudinal end of the substrate, an elastic arm formed by extending obliquely upward from the tensioning portion and toward the end away from the tensioning portion, and a support arm formed by bending from the end of the elastic arm toward the substrate and extending obliquely toward the tensioning portion. The support arm has pre-pressed portions protruding on both lateral sides. The substrate has wings formed by bending upward on both lateral sides. The wings have pre-pressing spaces that press the pre-pressed portions. The substrate has solder feet formed by bending downward on both lateral sides near the tensioning portion. The pre-pressing spaces are open on the side facing the tensioning portion.

[0005] Preferably, the projection of the weld foot and the wing in the vertical direction do not overlap and are disconnected.

[0006] Preferably, the wing includes a vertical extension formed by bending upward from both sides of the substrate and away from the tensioning portion, and a longitudinal extension formed by extending from the upper side of the vertical extension toward the tensioning portion, wherein the pre-pressing space is located between the longitudinal extension and the surface of the substrate.

[0007] Preferably, the pre-compressed portion abuts against the lower side of the longitudinal extension when not in operation, and when in operation, the pre-compressed portion moves toward the tensioning portion to outside the pre-compressing space.

[0008] Preferably, the elastic arm includes a horizontal arm extending from the tensioning portion toward a direction away from the tensioning portion, an inclined arm extending obliquely upward from the horizontal arm, and a bent portion formed by bending in the opposite direction from the end of the inclined arm, wherein a contact portion with a raised rib is formed on the bent portion.

[0009] Preferably, the horizontal arm is parallel to the substrate, and the upper surface of the wing is higher than the upper surface of the horizontal arm.

[0010] Preferably, the support arm includes a support arm body extending downward from the bending portion and toward the tensioning portion and located below the inclined arm, and a support end portion extending obliquely from the free end of the support arm body toward the tensioning portion and bent upward, wherein the pre-compressed portion protrudes from both lateral sides of the support arm body.

[0011] Preferably, the lateral width of the pre-compressed portion is greater than the width between the two wings.

[0012] Preferably, in the working state, the support end slides against the surface of the substrate.

[0013] Preferably, the short spring with solder feet is mounted on a printed circuit board, the printed circuit board has solder holes, the solder feet are inserted into the solder holes for welding and fixing, and the bottom surface of the substrate is soldered to the surface of the printed circuit board.

[0014] The short spring with solder feet in this application increases welding stability by bending the substrate downwards on the side near the tensioning part to form solder feet. At the same time, it opens the pre-compression space of the wing toward the tensioning part, ensuring that when the longitudinal depth of the pre-compression space is insufficient, the pre-compressed part can move behind the pre-compression space without increasing the length of the substrate. Attached Figure Description

[0015] Figure 1 This is a perspective view of the short spring with welded feet of this utility model.

[0016] Figure 2 This is a perspective view of the short spring with solder feet from another angle.

[0017] Figure 3 This is a side view of the short spring with solder feet of this application.

[0018] Among them: substrate-10; solder foot-11; tensioning part-20; elastic arm-30; horizontal arm-31; tilting arm-32; bending part-33; contact part-34; support arm-40; support arm body-41; support end-42; pre-compressed part-43; wing-50; vertical extension part-51; longitudinal extension part-52; pre-compressed space-53. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0020] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0022] This application is based on Figure 1 The X direction is the horizontal direction, the Y direction is the vertical direction, and the Z direction is the vertical direction.

[0023] Please refer to Figures 1 to 3 The short spring with solder feet of this application includes a substrate 10, a tensioning portion 20 formed by bending backward from one longitudinal end of the substrate 10, an elastic arm 30 extending from the tensioning portion 20 and located above the substrate 10, a support arm 40 formed by bending and extending from the end of the elastic arm 30 toward the substrate 10, and wings 50 formed by bending and extending upward from both lateral sides of the substrate 10.

[0024] The substrate 10 has solder feet 11 formed by bending downward on both lateral sides near the tensioning portion 20. The wing 50 includes a vertical extension 51 formed by bending upward from both lateral sides of the substrate 10 away from the tensioning portion 20, a longitudinal extension 52 formed from the upper side of the vertical extension 51 toward the tensioning portion 20, and a pre-compression space 53 formed below the longitudinal extension 52. The solder feet 11 and the wing 50 are misaligned in the longitudinal direction, that is, the projections of the solder feet 11 and the wing 50 in the vertical direction do not overlap and are disconnected in the longitudinal direction.

[0025] The elastic arm 30 includes a horizontal arm 31 extending horizontally above the substrate 10 from the tensioning portion 20, an inclined arm 32 extending obliquely upward from the horizontal arm 31 away from the tensioning portion 20, and a bent portion 33 formed by bending the inclined arm 32 toward the substrate 10. A contact portion 34 with raised ribs is stamped on the bent portion 33. Preferably, the horizontal arm 31 is parallel to the substrate 10, and its upper surface is used to pick up and move the spring product; in other embodiments, the horizontal arm 31 is not necessarily parallel to the substrate 10, but may also be at a certain oblique upward angle to the substrate 10. The upper end surface of the wing 50 extends beyond the upper surface of the horizontal arm 31.

[0026] The support arm 40 includes a support arm body 41 extending obliquely downward from the bending portion 33 and toward the tensioning portion 20, a support end portion 42 formed by bending in the opposite direction from the end of the support arm body 41, and a pre-pressed portion 43 protruding from both sides of the support arm body 41 and extending beyond the lateral outer edge of the substrate 10.

[0027] In the non-working state, the pre-compressed portion 43 is confined within the pre-compressing space 53. Specifically, the pre-compressed portion 43 is pressed down by the longitudinal extension 52 of the wing 50, maintaining a stable spring height for the elastic arm 30. During operation, the connecting object (not shown) presses downwards against the contact portion 34, causing the elastic arm 30 to elastically deform. The supporting end 42 of the support arm 40 abuts against the surface of the substrate 10 and moves towards the tensioning portion 20. Ultimately, the pre-compressed portion 43 moves backwards, extending beyond the rear of the longitudinal extension 52 into the lateral space where the solder foot 11 is located. Thus, while increasing the stability of the solder foot 11, the pre-compressing space 53 is opened towards the tensioning portion 20, ensuring sufficient longitudinal movement space for the pre-compressed portion 43 and preventing the spring product from becoming too long.

[0028] The short spring with solder feet of this application is mounted on a printed circuit board (not shown). The printed circuit board has solder holes (not shown). The solder feet 11 are inserted into the solder holes for soldering and fixing. The bottom surface of the substrate 10 is soldered to the surface of the printed circuit board for fixing.

[0029] The short spring with solder feet in this application increases welding stability by bending the substrate 10 downwards near the tensioning part 20 to form solder feet 11. At the same time, the pre-compression space of the wing 50 is opened toward the tensioning part 20, ensuring that when the longitudinal depth of the pre-compression space 53 is insufficient, the pre-compression part 43 can move behind the pre-compression space 53 without increasing the length of the substrate 10.

[0030] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but 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 these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A short spring with solder feet, comprising a substrate, a tensioning portion formed by bending backwards from one longitudinal end of the substrate, an elastic arm extending obliquely upwards from the tensioning portion and toward the end away from the tensioning portion, and a support arm formed by bending from the end of the elastic arm toward the substrate and extending obliquely toward the tensioning portion, wherein the support arm has pre-compressed portions protruding from both lateral sides, and the substrate has wings formed by bending upwards from both lateral sides, the wings having pre-compressing spaces for pressing the pre-compressed portions, characterized in that... The substrate has solder feet formed by bending downwards on both sides of the substrate near the tensioning part, and the pre-compression space is open on the side facing the tensioning part.

2. The short spring with solder feet as described in claim 1, characterized in that, The projection of the weld foot and the wing in the vertical direction do not overlap and are disconnected.

3. The short spring with solder feet as described in claim 2, characterized in that, The wing includes a vertical extension formed by bending upward from both sides of the substrate and away from the tensioning part, and a longitudinal extension formed by extending from the upper side of the vertical extension toward the tensioning part. The pre-pressing space is located between the longitudinal extension and the surface of the substrate.

4. The short spring with solder feet as described in claim 3, characterized in that, When the pre-compressed part is not in operation, it abuts against the lower side of the longitudinal extension. When in operation, the pre-compressed part moves toward the tensioning part and out of the pre-compressed space.

5. The short spring with solder feet as described in claim 4, characterized in that, The elastic arm includes a horizontal arm extending from the tensioning part toward a direction away from the tensioning part, an inclined arm extending obliquely upward from the horizontal arm, and a bent part formed by bending in the opposite direction from the end of the inclined arm. The bent part has a contact part with a raised rib.

6. The short spring with solder feet as described in claim 5, characterized in that, The horizontal arm is parallel to the substrate, and the upper surface of the wing is higher than the upper surface of the horizontal arm.

7. The short spring with solder feet as described in claim 5, characterized in that, The support arm includes a support arm body extending downward from the bending portion and toward the tensioning portion, located below the inclined arm, and a support end portion extending obliquely from the free end of the support arm body toward the tensioning portion and bent upward. The pre-compressed portion protrudes from both sides of the support arm body laterally.

8. The short spring with solder feet as described in claim 7, characterized in that, The lateral width of the pre-compressed portion is greater than the width between the two wings.

9. The short spring with solder feet as described in claim 7, characterized in that, In operation, the support end slides against the surface of the substrate.

10. The short spring with solder feet as described in claim 7, characterized in that, The short spring with solder feet is mounted on the printed circuit board, which has solder holes. The solder feet are inserted into the solder holes for welding and fixing. The bottom surface of the substrate is soldered to the surface of the printed circuit board.

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