Two-way, equal-height lifting, pressure-resistant, anti-snagging surface-mount spring clip

Abstract

The present invention discloses a bidirectional equal-height lifting and lowering pressure-resistant and anti-hooking surface-mounted spring clip, comprising: a rectangular core section with two mutually perpendicular extending sides and a stop-height side; elastic arm sections extending from the two extending sides respectively, the elastic arm sections having a width less than half of the full width of the stop-height side, and respectively comprising an elevated portion bent from the extending side away from the core section and extending a predetermined distance, a transverse portion bent from the end of the elevated portion away from the core section and extending toward each other; and a flexure bent from the end of the transverse portion away from the elevated portion and extending toward the core section, an exposed section bent toward and extending from the flexure and a supporting section corresponding to the exposed section, so that when one of the core section and the exposed section is surface-mounted to a circuit board and the other is pressed, the supporting section is pressed by the exposed section and jointly bears the pressing force; and the stop-height sections respectively bent from the two stop-height sides and extending in the same direction as the elevated section.

Description

Technical Field

[0001] The present invention relates to a surface mount spring piece, in particular to a bidirectional equal-height lifting and lowering anti-compression and anti-hooking surface mount spring piece. Background Art

[0002] Surface-mount springs are widely used in electronic circuit devices, serving as signal transmission, grounding, and heat conduction. They can also serve as buffers for circuit connections or mechanical contact points. As electronic products become increasingly complex, lightweight, and miniaturized, the size of springs is also being miniaturized. Furthermore, the structural strength of the springs must be considered to ensure their functional stability.

[0003] Common shrapnel is mostly made of a very thin metal sheet, such as beryllium copper, phosphor bronze, stainless steel, etc., which is stamped and bent. The manufacturing process is cut into the required size by precision machines, and then processed by precision tools, and the cut metal sheet is bent into shape multiple times. Figure 1 As shown in the figure 8 spring structure disclosed in Chinese patent CN2692970Y on April 13, 2005, the spring 7 has a mounting section 70 for soldering to the circuit board 9 on the bottom side, and a top wall 74 located on the top side for the suction nozzle to suck and move. The two often extend in parallel in a corresponding manner. However, there is only an elastic arm 72 connecting the mounting section and the suction section between the mounting section 70 and the top wall 74 as an elastic support. This one-way elastic arm structure will inevitably deform due to the downward pressure. Figure 2 The tilted tilt also causes the structures on both sides of the top and bottom to shift due to downward pressure deformation. It is even necessary to reserve a space on the circuit board 9 for the elastic arm 72 to tilt when installing this type of surface-mounted spring clip, which limits the miniaturization of circuit boards and electronic devices.

[0004] Therefore, if Figure 3 As shown in Taiwan Utility Model Patent No. M253955, some industry insiders have proposed bidirectional elastic arms 72', 73'. These arms 72', 73', which bend in both directions, have an additional auxiliary bottom wall 76' added to the bottom wall 70'. Furthermore, these arms are folded back to form a folded section 78', which overlap and secure each other. Therefore, when the top wall 74' is compressed and contracted, it will not tilt and can be directly pressed down. However, this structure is still weak. Once compressed and contracted beyond the elastic recovery range, it will be permanently deformed and damaged. Furthermore, since this spring structure requires an overlapping arrangement on the welded side of the bottom wall, an additional folded section 78' or a riveted joint is required to prevent the overlapping portions from sliding and deviating from each other. This additional processing must be completed in a narrow area of less than 1 mm, which prevents both production efficiency and product yield from being improved.

[0005] Especially after the spring clips are stamped and bent, their overall structure hasn't yet been finalized. Certain spring clips with specialized requirements require additional tinning or gold plating, or even heat treatment, to finalize their shape. Only after this processing is complete can they be individually placed into the stock strip for use in surface mount equipment. Therefore, before being placed one by one, spring clips of the same shape and size are often stored in large quantities in trays or plastic bags. Smaller spring clips, in particular, become entangled and extremely difficult to untangle manually. This design also leaves relatively large openings on the sides, making it difficult to prevent entanglement between the spring clips.

[0006] Therefore, if Figure 4 Taiwan Utility Patent No. M271351 discloses a cross-shaped spring clip 7" that attempts to address the difficult-to-process problem of requiring riveting or reverse bending of the bottom wall 70". However, this improvement reverts to the original design's problem of tilting and falling after being pressed. Worse still, with only a single elastic arm 72" connecting the top wall 74" and the bottom wall 70", the overall mechanical performance of this spring clip structure is weaker. Once miniaturized, it lacks sufficient support and is easily damaged by excessive deformation under pressure. Subsequently, numerous peers proposed probe-type downward-feeding spring clips, but due to their complex structure, they have not been widely accepted in the market.

[0007] To address the aforementioned issues, the present invention strives to minimize the deflection of the elastic arm during downward pressure, maintaining a bidirectional, equal-height lifting pattern during the descent of the top wall of the spring. This reduces the area required for circuit board installation and layout planning, allowing the miniaturized spring to fully utilize its advantages in circuit board layout planning. Furthermore, while miniaturizing the spring, improving its structural strength in the vertical direction allows it to maintain elastic deformation, resisting excessive strain and compression without deformation or damage. Furthermore, avoiding interference and entanglement during processes such as heat setting or gold plating of numerous miniature springs is a crucial factor in R&D and design in this field. In particular, even with miniaturized springs, manufacturing convenience must be maintained. Even with the spring's overall dimensions limited to just 1mm, smooth entry and exit of the molds during all bending steps is essential to achieving ideal bending processing, ensuring high product output efficiency and good product yield. Furthermore, the spring can be reversed to enhance user flexibility. Summary of the Invention

[0008] In view of the above-mentioned deficiencies in the prior art, according to an embodiment of the present invention, the main purpose of the present invention is to provide a two-way contour lifting and compression-resistant anti-hooking surface-mounted spring clip that can be used in both directions according to customer needs to increase the application range of the product; another purpose of the present invention is to provide a two-way contour lifting and compression-resistant anti-hooking surface-mounted spring clip with low offset during the downward pressure and rebound lifting process, thereby reducing the occupied planning area on the circuit board and fully demonstrating the advantages of miniaturization; another purpose of the present invention is to provide a process of being pressed down by force, which can share the pressure by the elastic arm sections on both sides, and even when reaching a predetermined height, The invention also provides a two-way contour lifting pressure-resistant and anti-hooking surface-mounted spring clip with high pressure resistance at the same time, thereby ensuring the overall structural strength of the miniaturized spring clip; another object of the present invention is to provide a two-way contour lifting pressure-resistant and anti-hooking surface-mounted spring clip with the opening of the spring arm section effectively covered, so as to avoid mutual entanglement and hooking before being packaged into the material belt, making it convenient to package the spring clip; another object of the present invention is to provide a two-way contour lifting pressure-resistant and anti-hooking surface-mounted spring clip with a simple structure and easy processing, so that during the processing process, all bending molds can be easily entered and exited, thereby ensuring output efficiency and product yield.

[0009] According to an embodiment, the present invention provides a bidirectional equal-height lifting and lowering pressure-resistant and anti-hooking surface-mounted spring clip, comprising: a rectangular core section having two extending sides and two stop-height sides parallel to each other, wherein the two extending sides are respectively perpendicular to the two stop-height sides; two elastic arm sections respectively extending from the two extending sides, each of the elastic arm sections having a width less than half of the full width of the stop-height side, and each of the elastic arm sections respectively including an elevated portion that is angularly bent from the extending side toward and extends away from the core section for a predetermined distance; an elevated portion that is bent from the elevated portion away from the end edge of the core section, and lateral portions extending toward each other; and a bending portion bent from the aforementioned lateral portion away from the end edge of the aforementioned elevated portion and extending in a direction away from the aforementioned core segment; an exposed segment bent toward each other by the above two bending portions and a support segment corresponding to the position of the above exposed segment, so that when one of the above core segment and the above exposed segment is surface-mounted to a circuit board and the other is pressed, the above support segment is pressed by the above exposed segment and jointly bears the above pressing force; and a stop-height segment bent from the above two stop-height sides and extending in the same direction as the above elevated portion.

[0010] Compared with the prior art, the bidirectional equal-height lifting and compression-resistant anti-hook surface-mounted spring clip of the present invention has two mutually opposite bidirectional reciprocating spring arm sections, on the one hand, they share the downward force with each other during the downward pressure, and by using the support section to block the outward inclination of the spring arm section, the spring arm section is subjected to balanced force without bias when it is forced to retract, thereby ensuring equal height lifting during downward pressure and rebound; in addition, the two spring arm sections jointly bear the pressure, and further, when pressed downward, there is the synergistic effect of the support section and the stop section, ensuring that the structural strength of the spring clip is not easily damaged by excessive retraction, so that the spring clip can be miniaturized to about one millimeter square without any reduction in strength; and it can be used in both directions by interchanging the top and bottom, maintaining a wider range of usage flexibility; and before placing the material strip, the entanglement between the spring clips can be reduced by partially covering the opening of the spring arm section and the stop section, so that no unnecessary loss will be caused during processing and packaging; in particular, the structure is simple, making the product easy to bend and form, ensuring output efficiency and product yield, and solving the above problems at one stroke. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional image of a common figure-eight shrapnel.

[0012] Figure 2 for Figure 1 Schematic side view of the figure-eight shrapnel being deflected under pressure.

[0013] Figure 3 This is a three-dimensional schematic diagram of another common conductive spring with bidirectional spring arm segments.

[0014] Figure 4 It is a three-dimensional schematic diagram of another common cross-type shrapnel.

[0015] Figure 5 1 is a perspective diagram of a first preferred embodiment of the present invention (illustrating the spring structure from a bottom view).

[0016] Figure 6 for Figure 5 AA line side cross-sectional view of the embodiment (illustrating the structure of the two elastic arm sections of the present invention in an upright state of use).

[0017] Figure 7 for Figure 5 Schematic side view of the embodiment in a compressed state (illustrating the anti-compression protection function of the height-stop section).

[0018] Figure 8 for Figure 5 Top view of the embodiment (illustrating the compressive function of the height-stop section and the reinforcement section).

[0019] Figure 9 A side view of a second preferred embodiment of the present invention (illustrating relative Figure 6 (The spring structure of the embodiment when it is set up in reverse).

[0020] Among them: 1, 1' are core sections; 10 are welding through-holes; 10' is a contact bump; 12 is an extension side; 14 is a stop side; 16 is a recessed welding port; 2 is an elastic arm section; 22 is an elevated portion; 220 is an end edge; 24 is a transverse portion; 240 is a remote edge; 26 is a bending portion; 3, 3' are exposed sections; 4, 4' are support sections; 5 is a stop section; 6 is a reinforcement section; 7, 7" are spring sheets; 70, 70', 70" are bottom walls; 72, 72', 72", 73' are elastic arms; 74, 74', 74" are top walls; 76' is an auxiliary bottom wall; 78' is a reversed section; 9 is a circuit board; AA is a section line. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific examples. These embodiments should be understood to be merely illustrative of the present invention and not intended to limit the scope of protection of the present invention. After reading the contents described herein, those skilled in the art may make various changes or modifications to the present invention, and these equivalent variations and modifications also fall within the scope defined by the claims of the present invention.

[0022] First preferred embodiment

[0023] like Figure 5-6 As shown, a first preferred embodiment of the present invention provides a bidirectional, contoured, and anti-snagging, pressure-resistant, surface-mounted spring clip. The clip comprises a flat core segment 1. For ease of illustration, in this embodiment, the core segment 1 has four roughly square side edges, each corresponding to a pair of side edges. One pair of these side edges is referred to as an extension side 12, which bends to form a corresponding spring arm segment 2. The other two side edges of the core segment 1 are referred to as stop height sides 14. Each spring arm segment 2 has a width less than half that of the stop height sides 14. Each spring arm segment 2 includes an elevated portion 22 that bends at an angle from the extension side 12 and extends a predetermined distance away from the core segment 1; a transverse portion 24 that bends from an end edge 220 of the elevated portion 22, away from the core segment 1, and extends toward each other; and a flexure portion 26 that bends from a distal edge 240 of the transverse portion 24, away from the elevated portion 22, and extends away from the core segment 1. In this embodiment, the elevated portions 22 and flexure portions 26 are approximately equal in height.

[0024] Two horizontal sections, projecting in a height direction and generally parallel to the core section 1, are formed by the two flexures 26, which are bent toward each other and extend. For ease of explanation, the section exposed to the outside is referred to as an exposed section 3, and the section corresponding to the exposed section 3 is referred to as a support section 4. In this embodiment, the core section 1 serves as a soldered bottom wall for surface mounting on a circuit board (not shown), while the exposed section 3 serves as a top wall for bearing downward pressure. Therefore, when the exposed section 3 is pressed, the support section 4 is immediately pressed against it, causing the two elastic arm sections 2 to jointly bear the pressure. This serves as auxiliary support for the first section. Because the exposed section 3 and the support section 4 are relatively pressed against each other, the lateral elastic force of the two elastic arm sections 2 is offset by friction during the downward forced flexure and contraction process. The entire elastic sheet is less likely to deflect due to downward pressure, successfully avoiding the circuit board space required for deflection of the elastic sheet under pressure and contraction. This fully demonstrates the advantages of the overall miniaturization of the elastic sheet, in line with the trend of lightweight, thin, and compact electronic device designs.

[0025] Furthermore, two stop height sections 5 are bent and extended from the two stop height sides 14, and the bending and extending direction of the stop height section 5 is also roughly perpendicular to the core section 1, so it also extends in the same direction as the elevated portion 22. The height of the stop height section 5 in this embodiment is slightly equal to the elevated portion, that is, slightly equal to about half the height of the entire spring sheet. When the full height of the spring sheet is about 1 mm, the height of the stop height section 5 is slightly equal to 0.5 mm; therefore, Figure 7 As shown, when the spring is compressed to 0.5 mm, the upper pressing element will abut against the top of the stop section 5, causing the second section of support reinforcement to begin to operate. Since the direction of pressure and the bending and contraction direction of the stop section 5 are perpendicular to each other, the supporting force will be greater than that of the elastic arm section 2. Of course, as those skilled in the art will readily understand, the heights described here are examples. In actual manufacturing, the height of the stop section can be changed to 30% or 70% of the full height according to the requirements of the end user, and the height ratio of the elevated portion 22 and the bent portion 26 of the elastic arm section 2 can also be changed.

[0026] In particular, because of the concern that the single upright stop section 5 is still not enough to withstand a sufficiently strong downward force, in this embodiment, Figure 8 As shown, a reinforcement section 6 is further extended from the lateral deflection of the two stop height sections 5 adjacent to the stop height side. Since the reinforcement section 6 and the stop height section 5 are relatively upright on the core section, when the exposed section 3 is pressed to the same height as the stop height section 5, the predetermined degree of contraction of the spring piece is met, so that the auxiliary pressure resistance of the stop height section 5 can be assisted by the lateral support of the reinforcement section 6, and the pressure of the elastic arm section 2 is shared. In addition, by Figure 5When observing the four sides of the core segment 1, it can be found that the raised portion 22 and the stop section 5, as well as the additional reinforcement section 6, will together intermittently shield the four sides of the core segment 1, and prevent a large number of unpackaged shrapnel from being hooked and stuck with adjacent shrapnel during the high temperature and electroplating rolling and stirring process, thereby ensuring output efficiency.

[0027] Moreover, during the stamping and bending process, the spring piece of the present invention first bends the spring arm section 2, the support section 4, and the exposed section 3. All processes are performed in a single axial bending. When the reinforcement section 6 and the stop section 5 are subsequently bent, the entry and exit directions of the mold completely do not interfere with the exposed section 3, the reinforcement section 6, the spring arm section 2, and the core section 1 that have been formed in the center. This also makes the product manufacturing process quite simple and reliable, easy to process, and effectively improves the product yield.

[0028] In this embodiment, since the core segment 1 is used as the bottom wall for soldering to the circuit board, a soldering through-hole 10 is further formed in the core segment 1, and recessed soldering ports 16 are respectively formed on the extension side 12 and the stop height side 14. By designing the soldering through-hole 10, the solder on the circuit board can penetrate therein, effectively preventing the spring from being peeled off from the circuit board due to unexpected external force. Moreover, generally, the soldering through-hole 10 is located in the center. Although it can help the spring resist pulling, it cannot resist the rotational displacement relative to the circuit board due to unexpected external force. When at least one recessed soldering port 16 is formed in each extension side 12 and the stop height side 14 for solder creeping, the rotational displacement after the spring is soldered to the circuit board can also be effectively prevented.

[0029] Second preferred embodiment

[0030] On the other hand, Figure 9 As shown, when circuit engineers choose to install in the opposite direction, the core segment 1' will face upward, and the exposed segment 3' will be used as the bottom wall for soldering to the circuit board. The support segment 4' is also located inside the exposed segment 3' to provide auxiliary support. In this case, to ensure good contact when the core segment 1' is under pressure, a contact bump 10' can be designed in the center of the core segment 1' instead of a solder through-hole. No recessed soldering ports are required on the extended side or the height-stop side, making the overall structure more simplified. With a roughly identical mold and manufacturing process, it provides considerable flexibility to meet different customer needs.

[0031] The above structural design not only avoids the displacement of the spring during compression and maintains the compressive strength of the miniaturized structure, but also simplifies the manufacturing process and prevents the springs from getting tangled with each other. In addition, the bending direction during the manufacturing process is easy to enter and exit the mold, resulting in excellent product output efficiency and product yield, thereby reducing manufacturing costs and achieving the above-mentioned effects of the present invention.

Claims

1. A two-way equal height lifting and compression-resistant anti-hooking surface-mounted spring, characterized by: include: A rectangular core segment having two parallel extending sides and two stop sides, wherein the two extending sides are respectively perpendicular to the two stop sides; The two elastic arm sections respectively extending from the two extending sides each have a width less than half of the full width of the aforementioned stop height side, and each elastic arm section respectively includes an elevated portion extending a predetermined distance from the extending side and angularly bent away from the core section; a transverse portion bent from the end edge of the elevated portion away from the core segment and extending toward each other; and a bent portion bent from a distal edge of the transverse portion away from the elevated portion and extending in a direction away from the core segment; An exposed section extending from the two flexures and bent toward each other, and a support section corresponding to the exposed section, such that when one of the core section and the exposed section is surface-mounted on a circuit board and the other is pressed, the support section is pressed by the exposed section and jointly bears the pressing force, wherein the elastic arm section, the support section, and the exposed section are all bent in a single axial direction, so that the core section and the exposed section can be mounted in opposite directions; a stop-height section bent from the two stop-height sides and extending in the same direction as the elevated portion; and Each of the above-mentioned stop-height sections has a reinforcement section extending from the lateral bend adjacent to the above-mentioned stop-height side, whereby when one of the above-mentioned core section and the above-mentioned exposed section is surface-mounted on a circuit board and the other one is pressed to a predetermined height, so that the above-mentioned elastic arm section is compressed to the above-mentioned predetermined height, the above-mentioned stop-height section and the above-mentioned reinforcement section will jointly share the pressure exerted on the above-mentioned elastic arm section.

2. The bidirectional equal height lifting and lowering pressure-resistant and anti-snagging surface-mounted spring clip according to claim 1, characterized in that: The core section is formed with at least one welding through-hole.

3. The bidirectional equal height lifting and lowering pressure-resistant and anti-snagging surface-mounted spring clip according to claim 1, wherein: The elevated portion and the bent portion have the same height.

4. The bidirectional equal height lifting and lowering pressure-resistant and anti-snagging surface-mounted spring clip according to claim 1, wherein: The exposed section has a width corresponding to the core section.

5. The bidirectional equal height lifting and lowering pressure-resistant and anti-snagging surface-mounted spring clip according to claim 1, wherein: The extending side and the height-stopping side are respectively formed with at least one recessed welding port.

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