Crown Spring

Abstract

This utility model discloses a crown spring, relating to the field of connector accessories technology. The crown spring includes an upper ring portion, a lower ring portion, and multiple contact portions. The lower ring portion is connected to the upper ring portion. Each contact portion is located on the lower ring portion and extends obliquely upward along the lower ring portion. Each contact portion has a contact terminal located at the end of the contact portion away from the lower ring portion. This utility model aims to reduce the force required for inserting and removing pins.

Description

Technical Field

[0001] This utility model relates to the field of connector accessories technology, and in particular to a crown spring. Background Technology

[0002] In the connector industry, crown spring structures are widely used in scenarios requiring frequent mating and unmating due to their high connection stability and long service life. Traditional crown springs typically employ a symmetrical double-arm design, with each end of the arm fixed to the upper and lower rings respectively, forming a closed force ring.

[0003] However, during the insertion and removal of the pins, the spring arm deforms with great resistance, resulting in a significant increase in insertion and removal force. This not only affects the operating feel but may also cause mechanical damage to the mating terminals. After long-term use, poor contact or structural fatigue may easily occur. Utility Model Content

[0004] The main objective of this invention is to propose a crown spring that reduces the force required for inserting and removing pins.

[0005] To achieve the above objectives, the crown spring proposed in this utility model includes: Upper ring; The lower ring portion, which is connected to the upper ring portion; and Multiple contact portions are provided on the lower ring portion and extend obliquely upward along the lower ring portion; each contact portion has a contact terminal located at the end of the contact portion away from the lower ring portion.

[0006] In one embodiment, there is a gap between the contact terminal and the upper ring portion.

[0007] In one embodiment, each of the contact terminals is provided with a first protrusion protruding toward the axis of the upper ring portion.

[0008] In one embodiment, the ends of each contact terminal away from the lower ring portion enclose an insertion space, which gradually narrows along the insertion direction of the pin.

[0009] In one embodiment, each of the contact portions includes an extension segment and a contact terminal connected to each other; the extension segment is disposed on the lower ring portion and extends obliquely upward along the lower ring portion; the contact terminal is disposed at the end of the extension segment away from the lower ring portion and extends obliquely upward along the extension segment.

[0010] In one embodiment, the crown spring further includes a plurality of extensions, each of which is connected at both ends to the upper ring portion and the lower ring portion respectively; each of the extensions extends obliquely upward along the lower ring portion.

[0011] In one embodiment, the extension protrudes toward the axis of the upper ring portion to form a second protrusion.

[0012] In one embodiment, the extension includes an inclined section and a connecting section; the inclined section is disposed on the lower ring portion and extends obliquely upward along the lower ring portion; the connecting section is disposed on the upper ring portion and extends directly downward along the upper ring portion. The end of the connecting segment away from the upper ring is connected to the end of the inclined segment away from the lower ring; the end of the connecting segment away from the upper ring protrudes to form the second protrusion.

[0013] In one embodiment, both the upper ring portion and the lower ring portion are open-loop structures.

[0014] In one embodiment, the upper ring portion has a first notch, and the lower ring portion has a second notch, the first notch and the second notch being offset from each other; The upper ring portion, the lower ring portion, each of the contact portions, and each of the extension portions are integrally formed structures.

[0015] In this invention, the crown spring includes an upper ring, a lower ring, and multiple contact portions. The lower ring connects to the upper ring. Each contact portion is located on the lower ring and extends obliquely upwards along it. Each contact portion has a contact terminal located at the end of the contact portion furthest from the lower ring. In this invention, by extending multiple independent contact portions along an included angle, the contact portions sequentially undergo localized elastic deformation when the pin is inserted, effectively dispersing stress concentration areas. The component force generated by the oblique extension of the contact portions converts some of the insertion / removal resistance into the elastic potential energy of the contact portions themselves, significantly reducing the insertion / removal force required during operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of an embodiment of the crown spring provided by this utility model; Figure 2 This is a top view of one embodiment of a crown spring; Figure 3 This is a schematic diagram of another embodiment of the crown spring.

[0018] Explanation of icon numbers:

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] 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 scope of protection of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] In existing technologies, connectors widely employ crown springs with a symmetrical double-arm structure, where the two ends of the arms are fixed to the upper and lower rings to form closed force loops. During pin insertion and removal, this structure results in excessive deformation resistance of the arms, leading to a significant increase in insertion and removal forces. This affects the user's feel and can easily cause mechanical damage to the mating terminals. Long-term use may result in poor contact or structural fatigue. In applications requiring frequent insertion and removal, traditional crown springs struggle to achieve stable and reliable electrical connections due to excessive insertion and removal forces.

[0024] To solve the above problems, this utility model proposes a crown spring 100. Figure 1 , Figure 2 as well as Figure 3This is a schematic diagram of the structure of an embodiment of the crown spring 100 provided by this utility model.

[0025] Please refer to Figure 1 and Figure 2 This utility model proposes a crown spring 100, including an upper ring portion 1, a lower ring portion 2, and a plurality of contact portions 3; the lower ring portion 2 is connected to the upper ring portion 1; each contact portion 3 is provided on the lower ring portion 2 and extends obliquely upward along the lower ring portion 2; each contact portion 3 has a contact terminal 31, the contact terminal 31 is located at the end of the contact portion 3 away from the lower ring portion 2, and each contact terminal 31 is used to clamp the pin.

[0026] The upper ring portion 1 is typically a ring structure and can be made of metal. The lower ring portion 2 connects to the upper ring portion 1 and can be made of the same material. The two can be connected by welding, riveting, or integral molding. The contact portion 3 refers to an elastic arm-like structure extending outward from the lower ring portion 2. It can be made of a stamped metal sheet, and its extension direction forms a non-perpendicular angle with the axis. This extension direction allows the contact portion 3 to undergo progressive elastic deformation when the pin is inserted. The contact terminal 31 refers to the functional area at the end of the contact portion 3 used to clamp the pin. It can be made by bending or stamping to form an arc-shaped contact surface. Multiple contact terminals 31 are distributed circumferentially to form an enclosing structure, generating a radial clamping force simultaneously when the pin is inserted. The contact portion 3 extends obliquely upward along the lower ring portion 2, meaning that the contact portion 3 extends along the angle between the axial direction and the circumferential direction of the lower ring portion 2.

[0027] Specifically, as the contact portion 3 extends outward from the lower ring portion 2, its extension path forms an inclined angle with the axis. When the pin is inserted, the contact terminal 31 first contacts the side wall of the pin. As the insertion depth increases, the contact portion 3 elastically bends along the inclined direction, gradually increasing the clamping force. Multiple contact portions 3 are evenly distributed circumferentially, forming a multi-point contact clamping structure. This reduces the pressure of single-point contact while offsetting part of the insertion and extraction resistance through the component force generated by the angular extension. The synergistic effect of the ends of the contact terminals 31 creates a self-centering clamping effect, ensuring stable guidance of the pin during insertion.

[0028] Compared to existing technologies, traditional double-arm structures generate clamping force through symmetrical closed force rings, with contact points concentrated in the middle of the arms. This results in the need to overcome the rigid resistance of the entire structure when inserting the pin. In contrast, this solution uses multiple independent contact portions 3 extending along an angled direction, causing the contact portions 3 to sequentially undergo localized elastic deformation upon pin insertion, effectively dispersing the stress concentration area. The component force generated by the inclined extension of the contact portions 3 converts some of the insertion / removal resistance into the elastic potential energy of the contact portions 3 themselves, significantly reducing the insertion / removal force required during operation.

[0029] Please refer to Figure 1In one embodiment of this utility model, there is a gap between the contact terminal 31 and the upper ring portion 1.

[0030] The gap refers to the space between the contact terminal 31 and the upper ring 1 that is not filled by a solid. Specifically, it can be achieved by adjusting the extension length of the contact portion 3. Its function is to provide the contact portion 3 with free deformation space when the pin is inserted.

[0031] Specifically, during the insertion of the pin, the contact portion 3 is elastically deformed outward by the pressure of the pin. At this time, the gap between the contact terminal 31 and the upper ring portion 1 allows the contact portion 3 to complete the deformation without contacting the upper ring portion 1. Therefore, the deformation resistance of the contact portion 3 comes only from the elastic modulus of the material itself, without having to overcome the frictional resistance between it and the upper ring portion 1, thereby reducing the insertion and extraction force.

[0032] By eliminating rigid interference between the contact part 3 and the upper ring part 1 through gap design, the deformation process of the contact part 3 relies solely on its own elasticity, significantly reducing insertion and extraction resistance.

[0033] Please refer to Figure 1 In one embodiment of the present invention, each contact terminal 31 is provided with a first protrusion 311 protruding toward the axis of the upper ring portion 1, and each first protrusion 311 is used to clamp the pin.

[0034] The first protrusion 311 refers to a local raised structure on the surface of the contact terminal 31 facing the central axis of the crown spring 100. Specifically, an arc-shaped protrusion can be formed on the surface of the contact terminal 31 through a stamping process to improve clamping stability.

[0035] Specifically, when the pin is inserted into the crown spring 100 along the axial direction, the first protrusions 311 of multiple contact terminals 31 simultaneously contact the outer wall of the pin. During the pin insertion process, the first protrusions 311 undergo elastic deformation under radial compression, and the contact terminals 31 expand outward to accommodate the pin. After the pin is fully inserted, the first protrusions 311 rely on the elastic restoring force of the material to form a multi-point uniformly distributed radial pressure on the pin, thereby reducing insertion and extraction resistance while ensuring contact reliability.

[0036] By absorbing part of the insertion and extraction force through elastic deformation and utilizing the rolling friction effect formed by the arc-shaped contact surface, frictional loss during the insertion and extraction process is effectively reduced. This allows the crown spring 100 to significantly reduce the force required for insertion and extraction operations while maintaining the clamping force, thereby reducing the sliding friction distance between the pin and the contact terminal 31 and thus reducing the wear rate of the contact surface. In addition, the discrete contact points formed by multiple first protrusions 311 can adaptively compensate for the dimensional tolerances of the pin, providing better tolerance compared to continuous contact surfaces. The discretely distributed structure of the first protrusions 311 can avoid large-area wear on the contact surface, thereby extending the service life of the contact terminal 31.

[0037] Please refer to Figure 1 and Figure 2 In one embodiment of this utility model, the ends of each contact terminal 31 away from the lower ring 2 form an insertion space 3a, and the insertion space 3a gradually contracts along the insertion direction of the pin.

[0038] The insertion space 3a refers to the cavity area formed by the ends of multiple contact terminals 31. Specifically, it can be formed by adjusting the bending angle or the spacing of the contact terminals 31, and is used to accommodate and guide the pins. Gradual contraction means that the cross-sectional area of ​​the insertion space 3a decreases along the pin movement path. Specifically, it can be achieved by tilting or bending the ends of the contact terminals 31 in the axial direction, thereby forming a guide slope structure.

[0039] Specifically, when the pin is inserted along the axial direction, the inclined or bent portion at the end of the contact terminal 31 first contacts the outer wall of the pin. As the insertion space 3a gradually narrows in the direction of pin movement, the contact terminal 31 undergoes elastic deformation after being squeezed by the pin, causing the contact pressure between the contact terminal 31 and the pin to gradually increase. During this process, the pin is guided to the predetermined clamping position by the guide ramp, and the elastic deformation resistance of the contact terminal 31 changes slowly with the increase of insertion depth, thereby avoiding excessive resistance on the pin during the initial insertion stage.

[0040] By forming a gradually narrowing insertion space 3a, the contact pressure of the pin is smoothly transitioned during insertion. At the same time, the guide slope is used to reduce the frictional resistance between the pin and the contact terminal 31, avoiding plastic deformation of the contact terminal 31 caused by local stress concentration. The guide structure reduces the frictional loss between the pin and the contact terminal 31, thereby improving the smoothness of the insertion and removal operation and extending the service life of the crown spring 100.

[0041] Please refer to Figure 1 and Figure 3 In one embodiment of the present invention, each of the contact portions 3 includes an extension 32 and a contact terminal 31 connected to each other; the extension 32 is disposed on the lower ring portion 2 and extends obliquely upward along the lower ring portion 2; the contact terminal 31 is disposed at the end of the extension 32 away from the lower ring portion 2.

[0042] It is understandable that the contact terminal 31 can extend obliquely upward along the extension section 32, consistent with the extension direction of the extension section 32, such as... Figure 3 As shown; the contact terminal 31 can also extend upward along the axial direction of the upper ring portion 1, such as... Figure 1 As shown.

[0043] In one embodiment of the present invention, the contact terminal 31 extends obliquely upward along the extension section 32, and is consistent with the extension direction of the extension section 32.

[0044] The extension section 32 extends continuously in the same direction (obliquely upward) as the contact terminal 31, forming a "long cantilever" structure. This increases the effective cantilever length of the contact terminal 31 relative to the lower ring 2, resulting in lower bending stiffness and significantly reduced external force required for elastic deformation under the same pin interference, thus further reducing insertion and extraction force. Simultaneously, the continuous unidirectional extension structure requires only one stamping and bending operation during manufacturing, eliminating the need for traditional "secondary bending" processes, simplifying processing steps, and improving production efficiency.

[0045] Please refer to Figure 1 In one embodiment of the present invention, the crown spring 100 further includes a plurality of extensions 4, the two ends of each extension 4 being connected to the upper ring 1 and the lower ring 2 respectively; each extension 4 extends obliquely upward along the lower ring 2.

[0046] The extension 4 refers to the transition structure connecting the upper ring 1 and the lower ring 2. Specifically, it can be formed by bending a thin-walled metal sheet. This structure provides elastic support between the upper ring 1 and the lower ring 2, absorbing insertion and extraction stress through the elastic deformation of the extension 4 during pin insertion. The extensions 4 extend obliquely upwards along the lower ring 2, meaning that the extension direction of the extension 4 is the same as the extension direction of the contact portion 3.

[0047] Specifically, the extension 4 connects the upper and lower rings 2 at an inclined angle, forming an elastic support frame. When the pin is inserted into the clamping space formed by the contact terminal 31, the extension 4 undergoes elastic bending under the axial thrust of the pin, and its inclined extension direction generates a radial expansion component during the bending deformation process. This deformation method effectively disperses the insertion and extraction stress borne by the contact portion 3, while maintaining the stable clamping of the pin by the contact terminal 31 through the elastic restoring force of the extension 4. The extension 4 and the contact portion 3 form a dual elastic support system, with the contact portion 3 mainly providing radial clamping force, while the extension 4 undertakes the buffering function of axial load.

[0048] By setting the oblique extension 4, the axial thrust of the pin is decomposed into a tangential component in the oblique direction of the extension 4, so that the extension 4 can achieve stress release with a small amount of deformation, significantly reducing the force required for insertion and removal operations; the oblique elastic deformation mechanism of the extension 4 can convert the axial thrust when the pin is inserted into radial expansion motion, reducing insertion and removal resistance while maintaining the clamping force of the contact terminal 31; this structural design not only ensures the stability of electrical connection, but also avoids mechanical damage to the connector due to excessive insertion and removal force, and is particularly suitable for high reliability connection scenarios that require frequent insertion and removal.

[0049] Please refer to Figure 1In one embodiment of the present invention, the extension portion 4 protrudes toward the axis of the upper ring portion 1 to form a second protrusion 421, and the second protrusion 421 is configured to abut against the pin.

[0050] The second protrusion 421 refers to a local protrusion on the surface of the extension 4 that bulges in the axial direction. Specifically, it can be formed into an arc-shaped protrusion structure by stamping, which is used to provide contact support when the pin is inserted.

[0051] Specifically, during the insertion of the pin, the second protrusion 421 is configured to form line contact or point contact with the sidewall of the pin. When the pin enters along the axial direction, the second protrusion 421 is elastically deformed by the pressure of the outer wall of the pin, causing the extension 4 to expand outward as a whole.

[0052] By forming a protruding structure in the extension 4 to cooperate with the contact terminal 31 to abut against the pin, the contact pressure is dispersed. This can significantly reduce the force required for insertion and removal operations while ensuring the stability of the pin clamping, and avoid terminal wear and structural fatigue caused by excessive insertion and removal force.

[0053] Please refer to Figure 1 In one embodiment of the present invention, the extension 4 includes an inclined section 41 and a connecting section 42; the inclined section 41 is disposed on the lower ring 2 and extends obliquely upward along the lower ring 2; the connecting section 42 is disposed on the upper ring 1 and extends directly downward along the upper ring 1; one end of the connecting section 42 away from the upper ring 1 is connected to one end of the inclined section 41 away from the lower ring 2; a second protrusion 421 is formed on one end of the connecting section 42 away from the upper ring 1.

[0054] The inclined section 41 refers to the support structure that starts from the lower ring 2 and extends obliquely upwards. It can be implemented using an arc-shaped transition or a straight extension, dispersing stress distribution through its oblique extension path. The connecting section 42 refers to the transition structure that starts from the upper ring 1 and extends directly downwards. It can be implemented using a bend or an arc-shaped transition, enhancing structural stability through its vertical extension path. The second protrusion 421 refers to a localized raised structure formed on the connecting section 42. It can be implemented using stamping or bending, increasing the contact area with the pin through its protruding shape.

[0055] Specifically, the inclined segment 41 extends obliquely upward from the lower ring 2 at a preset angle to form the first support segment; the connecting segment 42 extends vertically downward from the upper ring 1 to form the second support segment; the ends of the inclined segment 41 and the connecting segment 42 are connected by a bending point or a smooth arc surface to form a continuous support structure. The second protrusion 421 is located at the junction area between the end of the connecting segment 42 and the inclined segment 41, and its protrusion height can be controlled within the curvature range of the contact surface, so that the second protrusion 421 undergoes elastic deformation when the pin is inserted, forming a multi-point contact state.

[0056] The extension 4 is decomposed into a segmented structure of inclined section 41 and connecting section 42. The overall rigidity is reduced by the inclined extension path. At the same time, a second protrusion 421 is set to form a local flexible contact point, so that the extension 4 can generate elastic deformation in stages when the pin is inserted, effectively reducing the insertion and extraction resistance.

[0057] Please refer to Figure 1 In one embodiment of this utility model, both the upper ring portion 1 and the lower ring portion 2 are open-ring structures.

[0058] The open-loop structure refers to a ring-shaped component with a gap that does not form a completely closed ring. Specifically, this can be achieved by stamping or cutting processes to create the gap on the ring-shaped substrate. The gap design allows the upper ring 1 and the lower ring 2 to undergo elastic deformation under stress, thereby accommodating more pins of different sizes.

[0059] The upper ring 1 and lower ring 2 form a non-closed ring structure through an open-loop design. When the pin is inserted into the contact terminal 31, the notch in the open-loop structure allows the upper and lower rings 2 to elastically expand radially. This elastic expansion can counteract the radial pressure generated when the pin is inserted, thereby reducing the frictional resistance between the contact portion 3 and the pin, while maintaining the clamping stability of the contact terminal 31 on the pin. Meanwhile, the notch design of the crown spring 100 allows the upper ring 1 and lower ring 2 to elastically deform under force, thus accommodating pins of more different sizes. Furthermore, the open-loop structure of both the upper ring 1 and lower ring 2 allows the entire crown spring 100 to be integrally stamped, providing more processing options.

[0060] Please refer to Figure 1 In one embodiment of the present invention, the upper ring portion 1 has a first notch 1a and the lower ring portion 2 has a second notch 2a, and the first notch 1a and the second notch 2a are offset.

[0061] The first notch 1a refers to the opening structure formed by the circumferential break in the upper ring 1. Specifically, this notch can be formed on the edge of the upper ring 1 using a stamping or cutting process. This notch allows the upper ring 1 to undergo elastic deformation when the pin is inserted. The second notch 2a refers to the opening structure formed by the circumferential break in the lower ring 2. Specifically, this notch can be formed on the edge of the lower ring 2 using the same processing method as the first notch 1a. This notch is used to reduce the structural rigidity of the lower ring 2. The staggered arrangement means that the first notch 1a and the second notch 2a do not overlap in the circumferential direction. For example, the first notch 1a is located on the left side of the upper ring 1, and the second notch 2a is located on the right side of the lower ring 2. This design avoids the weakest areas of the upper and lower rings 2 being in the same location. Specifically, when the pin is inserted into the crown spring 100, the upper ring 1 and the lower ring 2 expand elastically due to the notches, thereby reducing the insertion and extraction resistance. Since the first notch 1a and the second notch 2a are misaligned, the deformation areas of the upper and lower rings 2 do not overlap in the axial projection, thus dispersing the overall deformation stress of the crown spring 100 and avoiding stress concentration at the same axial position.

[0062] The staggered notch design maintains the structural integrity of the ring portion while significantly enhancing local elastic deformation capability. This reduces the deformation resistance of the crown spring 100 during pin insertion, thereby reducing insertion and extraction forces and improving the user experience. Simultaneously, the staggered notch prevents structural weak points from occurring in the same location in the upper and lower ring portions 2, helping to distribute stress and extend the service life of the crown spring 100.

[0063] Please refer to Figure 1 In one embodiment of this utility model, the upper ring 1, the lower ring 2, each contact portion 3, and each extension portion 4 are integrally formed structures.

[0064] The integrated molding structure refers to the process of forming multiple components into a single unit through stamping or precision casting. Specifically, it can be achieved using continuous stamping and bending of sheet metal. This structure eliminates assembly gaps between components and improves overall structural strength. The upper ring 1 is a ring-shaped support structure located at the top of the crown spring 100, which can be implemented using a C-shaped open ring structure to provide radial support. The lower ring 2 is a bottom ring structure coaxially arranged with the upper ring 1, which can be implemented using a ring base of the same material as the upper ring 1, and is used to support the contact part 3 and the extension part 4. The contact part 3 is an elastic arm structure extending outward from the lower ring 2, which can be implemented using an evenly spaced strip-shaped cantilever beam structure to form the contact points for clamping the pins. The extension part 4 is a transition structure connecting the upper and lower rings 2, which can be implemented using an inclined elastic support beam structure to balance the stress distribution generated during insertion and extraction.

[0065] Specifically, the upper ring 1 and the lower ring 2 form a spatial support frame through the extension 4, and the contact part 3 extends outward from the lower ring 2 to form a clamping space. During the insertion of the pin, the contact part 3 and the extension 4 work together to generate elastic deformation. The extension 4 disperses the insertion and extraction stress through an inclined beam structure, while the contact part 3 forms multi-point contact through a cantilever beam structure. The one-piece molded structure eliminates assembly seams between the components, and the elastic deformation of the contact part 3 and the extension 4 can be controlled by the material thickness and bending angle, thereby ensuring a uniform distribution of the pin clamping force.

[0066] The one-piece molding process eliminates the assembly interfaces between components, creating a continuous material flow between the elastic deformation areas of the extension 4 and the contact 3, thus avoiding the risk of weld breakage in traditional structures. Simultaneously, it reduces local stress peaks in the contact 3 and extension 4 during pin insertion and removal, minimizing elastic attenuation caused by assembly gaps, thereby extending the service life of the crown spring 100 under frequent insertion and removal conditions. Furthermore, the one-piece structure simplifies the manufacturing process and avoids the accumulation of dimensional deviations caused by assembling multiple components.

[0067] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A crown spring, characterized in that, include: Upper ring; The lower ring portion is connected to the upper ring portion; as well as Multiple contact portions are provided on the lower ring portion and extend obliquely upward along the lower ring portion; each contact portion has a contact terminal located at the end of the contact portion away from the lower ring portion.

2. The crown spring as described in claim 1, characterized in that, There is a gap between the contact terminal and the upper ring portion.

3. The crown spring as described in claim 2, characterized in that, Each of the contact terminals is provided with a first protrusion protruding toward the axis of the upper ring portion.

4. The crown spring as described in claim 3, characterized in that, The ends of each contact terminal away from the lower ring portion form an insertion space, which gradually narrows along the insertion direction of the pin.

5. The crown spring as described in claim 1, characterized in that, Each of the contact portions includes an extension section and a contact terminal connected to each other; the extension section is disposed on the lower ring portion and extends obliquely upward along the lower ring portion; the contact terminal is disposed at the end of the extension section away from the lower ring portion and extends obliquely upward along the extension section.

6. The crown spring according to any one of claims 1 to 5, characterized in that, The crown spring also includes multiple extensions, with each extension having its two ends connected to the upper ring and the lower ring respectively; each extension extends obliquely upward along the lower ring.

7. The crown spring as described in claim 6, characterized in that, The extension protrudes toward the axis of the upper ring to form a second protrusion.

8. The crown spring as described in claim 7, characterized in that, The extension includes an inclined section and a connecting section; the inclined section is located on the lower ring portion and extends obliquely upward along the lower ring portion; the connecting section is located on the upper ring portion and extends directly downward along the upper ring portion. The end of the connecting segment away from the upper ring is connected to the end of the inclined segment away from the lower ring; the end of the connecting segment away from the upper ring protrudes to form the second protrusion.

9. The crown spring as described in claim 8, characterized in that, Both the upper ring and the lower ring are open-ring structures.

10. The crown spring as described in claim 9, characterized in that, The upper ring portion has a first notch, and the lower ring portion has a second notch, with the first notch and the second notch being offset from each other; The upper ring portion, the lower ring portion, each of the contact portions, and each of the extension portions are integrally formed structures.

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