Fisheye terminal and connector structure
By combining solid and hollow fisheye terminal designs, the problem of unbalanced insertion and extraction forces is solved, achieving stable insertion and extraction forces and signal transmission quality, and enhancing the connection reliability between the fisheye terminal and the PCB board.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-03-20
AI Technical Summary
Existing fisheye terminals have a large difference between insertion force and extraction force during insertion and extraction, which affects signal transmission quality and PCB stability. Hollow fisheyes have limited strength, while solid fisheyes have large insertion force and limited deformation space.
The fisheye terminal design combines solid and hollow components, including a guide section, an elastic section, and a terminal shoulder. The elastic section consists of two contact arms and a retaining spring. The width of the retaining spring is double-sided V-shaped, and combined with the through-hole design, it ensures uniform force during insertion and provides stable insertion and extraction force.
It effectively reduces the risk of deformation of the fisheye terminal during insertion, improves the stability of insertion and extraction force, reduces unnecessary insertion force, enhances anti-resonance capability, and improves the stability of signal transmission and the connection reliability of the PCB board.
Smart Images
Figure CN224021086U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to connector technical field especially relates to a fish eye terminal and connector structure. BACKGROUND
[0002] The fish eye terminal is a commonly used electrical connection component, usually used for inserting into the insertion hole of the PCB board to perform electrical lapping.
[0003] At present, the fish eye terminal usually has hollow and solid two types, but the fish eye structure of the two types has corresponding defects.
[0004] The structure of the hollow fish eye terminal is relatively slender, and the strength of the elastic part and the connecting part is limited, and in the process of being subjected to a large external force or long-term use, deformation or damage may occur, affecting the connection stability with the PCB board; due to the hollow structure, the contact area with the PCB board hole is limited, and the contact part may be only a narrow arc surface or even line contact. This makes the pulling force unstable, and the fish eye terminal may be loose or fall off during use, thereby affecting the reliable connection of the signal; the contact area of the hollow fish eye terminal with the PCB board hole is small, and the contact is not sufficient. This will result in a large contact resistance, affecting the efficiency and quality of signal transmission, especially in high current or high frequency application scenarios.
[0005] Due to the structural characteristics of the solid fish eye terminal, a large insertion force is required when inserting into the PCB board hole, which may cause certain pressure to the PCB board, and even cause the PCB board hole to deform during insertion; the elastic deformation capacity of the solid structure is relatively limited, and compared with the hollow fish eye terminal, it may not be as flexible as the hollow structure to adapt to different hole diameter tolerances during insertion and pulling out; although the solid fish eye terminal reduces the contact resistance by increasing the contact area, in some cases, if the contact surface is not properly treated or contains impurities, the contact resistance may still be high, affecting the stability and efficiency of signal transmission.
[0006] Both types of fish eye structures have the problem of large difference between insertion force and pulling force, and there is a risk of damaging the PCB hole due to excessive insertion force and affecting the quality of signal transmission due to insufficient pulling force in actual application, and it is difficult to balance the two. UTILITY MODEL CONTENTS
[0007] The utility model solves the technical problem of providing a fish eye terminal and a connector structure to solve the above problems in the prior art.
[0008] The utility model discloses a fish eye terminal, including the fixed connection of guiding portion, elastic portion and terminal shoulder portion in proper order, the elastic portion includes two opposite contact arms, and the both ends of two contact arms are fixedly connected with guiding portion and terminal shoulder portion respectively, and the middle part between two contact arms is fixedly connected through the holding spring piece, the holding spring piece is the solid structure that recessed surface is in both upper and lower surfaces, and the width direction cross section is two -sided V type, and a plurality of through -holes are equipped between two contact arms.
[0009] The utility model discloses the beneficial effect is: the utility model discloses the design of solid and hollow combination can make up for the short board of hollow fish eye intensity limited, keeping force unstable and solid fish eye insertion force big, limited deformation space, and the width direction cross section of holding spring piece is two -sided symmetrical V type, and the symmetrical structure can make the terminal even force in the insertion process, effectively reduce the risk of terminal insertion process deformation, can provide stable plug -in force, be favorable to improve process and product stability.
[0010] On the basis of the above technical scheme, the utility model still can make following improvement.
[0011] Further, the included angle of the two recessed sides of the V-shaped recessed surface of the holding spring piece is 100°-120°.
[0012] The beneficial effect of the above further scheme is: the included angle of the two recessed sides of the V-shaped recessed surface of the holding spring piece is 100°-120°, which can ensure that the holding spring piece has sufficient holding strength.
[0013] Further, the connection of the two recessed sides of the V-shaped recessed surface of the holding spring piece is rounded.
[0014] The beneficial effect of the above further scheme is: the connection of the two recessed sides of the V-shaped recessed surface of the holding spring piece is rounded, which further ensures the strength of the connection.
[0015] Further, the two contact arms are sequentially an introduction section, a contact section and a support section along one end connected with the guiding portion to one end connected with the terminal shoulder portion, the holding spring piece is fixedly connected with the two contact sections, and a first through hole is arranged between the two introduction sections.
[0016] The beneficial effect of the above further scheme is: a first through hole is arranged between the two introduction sections, the introduction section can be deformed to a certain extent during insertion, which can reduce unnecessary insertion force and avoid damage to the PCB during insertion.
[0017] Furthermore, the first through hole is a strip-shaped hole with arc surfaces at both ends, and the arc surface diameter at the end of the first through hole closer to the retaining spring is larger than the arc surface diameter at the other end.
[0018] The beneficial effect of adopting the above-mentioned further solution is that it ensures that the elasticity of the introduction section is uniform, so that the force is more even during the insertion process.
[0019] Furthermore, a second through hole is provided between the two support sections.
[0020] The beneficial effects of adopting the above-mentioned further solution are: the setting of the second through hole can reduce unnecessary insertion force and has strong anti-resonance capability, high power and vibration reduction.
[0021] Furthermore, the second through hole is a strip-shaped hole with arc surfaces at both ends, and the arc surface diameter at the end of the second through hole closer to the retaining spring is larger than the arc surface diameter at the other end.
[0022] The beneficial effects of adopting the above-mentioned further solutions are: ensuring uniform elasticity of the support section and uniformity of the pushed force.
[0023] Furthermore, the introducing segment and the contact segment are arranged at an angle A, and the contact segment and the support segment are arranged at an angle B, both of which are obtuse angles less than 180°.
[0024] The beneficial effects of adopting the above-mentioned further scheme are: the angle between the introduction section and the contact section is less than 180°, and the angle between the contact section and the support section is less than 180°, which facilitates insertion and withdrawal.
[0025] Furthermore, the outer wall of the connection between the introduction section and the contact section has an arc-shaped transition, and the connection between the contact section and the support section also has an arc-shaped transition.
[0026] The beneficial effect of adopting the above-mentioned further solution is that the outer wall has a rounded transition, which avoids damage to the PCB board socket during insertion and withdrawal.
[0027] This utility model also provides a connector structure to solve the above-mentioned technical problems, including the fisheye terminal described above.
[0028] The beneficial effects of adopting the above scheme are: the combination of solid and hollow design can make up for the shortcomings of hollow fisheye with limited strength and unstable holding force, and solid fisheye with large insertion force and limited deformation space; the cross section of the spring in the width direction is a double-sided symmetrical V-shape, and the symmetrical structure can make the terminal be subjected to uniform force during the insertion process, effectively reducing the risk of deformation during the insertion process, and providing stable insertion and extraction force, which is conducive to improving the stability of the process and the product. Attached Figure Description
[0029] Figure 1 It is the three-dimensional structure schematic view of the utility model;
[0030] Figure 2 It is the width direction section view of the utility model's keeping spring piece setting;
[0031] In the drawing, the component list represented by each sign is as follows:
[0032] 1, guide part; 2, elastic part; 21, contact arm; 211, lead-in section; 212, contact section; 213, support section; 22, keeping spring piece; 231, first through hole; 232, second through hole; 3, terminal shoulder part. DETAILED DESCRIPTION
[0033] The principle and characteristics of the utility model are described below in combination with the drawing, and the examples are only used to explain the utility model and are not used to limit the scope of the utility model.
[0034] Example One
[0035] As shown in Figure 1 , Figure 2 The embodiment discloses a fish-eye terminal, which comprises a guide part 1, an elastic part 2 and a terminal shoulder part 3 which are fixedly connected in sequence, the elastic part 2 comprises two oppositely arranged contact arms 21, both ends of the two contact arms 21 are fixedly connected with the guide part 1 and the terminal shoulder part 3 respectively, and the two contact arms 21, the guide part 1 and the terminal shoulder part 3 form a fish-eye structure.
[0036] The two contact arms 21 are fixedly connected through a keeping spring piece 22 between the middle parts of the two contact arms 21, the two sides of the keeping spring piece 22 are integrated with the two contact arms 21, the keeping spring piece 22 is a solid structure with concave upper and lower surfaces, the cross section of the keeping spring piece 22 in the width direction is double-face V-shaped, and a plurality of through holes are arranged between the two contact arms 21.
[0037] In the embodiment, the included angle of the two concave sides of the V-shaped concave surface of the keeping spring piece 22 is 100°-120°, and the connection part of the two concave sides of the V-shaped concave surface of the keeping spring piece 22 is transitioned with a circular arc, so that the keeping spring piece 22 has sufficient keeping strength.
[0038] Two contact arms 21 are sequentially integrally connected with an introduction section 211, a contact section 212 and a support section 213 connected from one end of the guide part 1 to one end of the terminal shoulder part 3, the retaining spring 22 is fixedly connected with the two contact sections 212, a first through hole 231 is arranged between the two introduction sections 211, a second through hole 232 is arranged between the two support sections 213, the introduction section 211 can be deformed during insertion, the unnecessary insertion force can be reduced, the PCB can be prevented from being damaged during insertion, the second through hole 232 can reduce the unnecessary insertion force and has strong anti-resonance ability, high power and vibration reduction. The deformation space can be provided for the terminal stamping process and the insertion process, the manufacturing difficulty is reduced, and the problem that the insertion force and the ejection force of the existing fish-eye terminal are greatly different is solved; the tolerance precision requirement of the fish-eye terminal and the PCB cooperation size is reduced; the stability of the connection and the product qualification rate are improved.
[0039] Specifically, the first through hole 231 is a strip hole with arc surfaces at both ends, and the arc surface diameter of one end of the first through hole 231 close to the retaining spring 22 is greater than that of the other end. The second through hole 232 is a strip hole with arc surfaces at both ends, and the arc surface diameter of one end of the second through hole 232 close to the retaining spring 22 is greater than that of the other end. The elastic force of the introduction section 211 and the support section 213 is uniform, and the insertion force and the ejection force are uniform.
[0040] The introduction section 211 and the contact section 212 are arranged at an included angle A, and the contact section 212 and the support section 213 are arranged at an included angle B, both the included angle A and the included angle B are obtuse angles less than 180°, which is convenient for insertion and extraction.
[0041] In the embodiment, the outer wall at the connection between the introduction section 211 and the contact section 212 is transitioned in a circular arc shape, and the connection between the contact section 212 and the support section 213 is transitioned in a circular arc shape. The outer wall is transitioned in a circular arc shape to avoid damage to the PCB jack during insertion and extraction.
[0042] 1. The embodiment adopts a combination of solid and hollow structures, and by adjusting the proportion of solid and hollow structures, a plurality of different insertion and extraction force curves are obtained to meet different application scenarios; and the embodiment is not limited to changing materials or adjusting the outer diameter size to meet the requirements.
[0043] 2. The introduction area of the embodiment is designed as a hollow structure to reduce unnecessary insertion force, and the contact area is designed as a solid structure to ensure the holding force after insertion; the embodiment is beneficial to reduce the difference between the insertion force and the ejection force, avoid damage to the PCB during insertion, and meet the product use requirements of the ejection force.
[0044] 3, The embodiment adopts the design that the supporting area is a hollow structure, unnecessary insertion force can be reduced, and the anti-resonance ability, high power and vibration reduction are strong.
[0045] 4, The embodiment adopts the design that the contact area is a double V-shaped symmetrical structure, the symmetrical structure can make the terminal force uniform in the insertion process, effectively reduce the risk of terminal deformation in the insertion process, and the solid double V-shaped structure can provide stable insertion and pulling force, which is beneficial to improve the process and product stability.
[0046] 5, The embodiment adopts the design of combination of solid and hollow, which can make up for the short board of limited strength, unstable holding force of hollow fish eye and large insertion force, limited deformation space of solid fish eye.
[0047] 6, The embodiment adopts the design of combination of solid and hollow, the hollow structure can provide deformation space and improve heat dissipation effect in the manufacturing and insertion process, which is beneficial to the stability of product processing and use.
[0048] Embodiment two
[0049] The embodiment discloses a connector structure comprising the fish eye terminal. The design of combination of solid and hollow can make up for the short board of limited strength, unstable holding force of hollow fish eye and large insertion force, limited deformation space of solid fish eye, the cross section of the width direction of the spring sheet 22 is double-symmetric V-shaped, the symmetrical structure can make the terminal force uniform in the insertion process, effectively reduce the risk of terminal deformation in the insertion process, and can provide stable insertion and pulling force, which is beneficial to improve the process and product stability.
[0050] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential direction" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the system or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.
[0051] In the description of the utility model, the meaning of "a plurality of" is at least two, for example, two, three and the like, unless otherwise specifically limited.
[0052] In the utility model, unless another definite provision and limitation, the term " install " " link " " connect " " fixed " and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can pass through intermediate medium indirectly connect, can be two element inside's intercommunication or two element's mutual action relation, unless another definite limitation.For the ordinary skill in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.
[0053] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. Furthermore, the skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.
[0054] The above is only the preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A fisheye terminal, comprising a guide portion (1), an elastic portion (2), and a terminal shoulder portion (3) sequentially fixedly connected, characterized in that, The elastic part (2) includes two oppositely arranged contact arms (21). The two ends of the two contact arms (21) are fixedly connected to the guide part (1) and the terminal shoulder (3) respectively. The middle parts of the two contact arms (21) are fixedly connected by a retaining spring (22). The retaining spring (22) is a solid structure with concave upper and lower surfaces and a double-sided V-shaped cross section in the width direction. Several through holes are provided between the two contact arms (21).
2. A fisheye terminal according to claim 1, characterized in that, The included angle between the two concave sides of the V-shaped concave surface of the retaining spring (22) is 100°-120°.
3. A fisheye terminal according to claim 2, characterized in that, The connection between the two concave sides of the V-shaped concave surface of the retaining spring (22) is transitioned by a rounded arc.
4. A fisheye terminal according to claim 1, characterized in that, The two contact arms (21) are sequentially connected as an integrated fixed connection of an inlet section (211), a contact section (212), and a support section (213) from one end connected to the guide portion (1) to one end connected to the terminal shoulder portion (3). The retaining spring (22) is fixedly connected to the two contact sections (212), and a first through hole (231) is provided between the two inlet sections (211).
5. A fisheye terminal according to claim 4, characterized in that, The first through hole (231) is a strip-shaped hole with arc surfaces at both ends, and the arc surface diameter of the first through hole (231) at one end near the retaining spring (22) is larger than the arc surface diameter at the other end.
6. A fisheye terminal according to claim 4, characterized in that, A second through hole (232) is provided between the two support sections (213).
7. A fisheye terminal according to claim 6, characterized in that, The second through hole (232) is a strip-shaped hole with arc surfaces at both ends, and the arc surface diameter of the second through hole (232) at one end near the retaining spring (22) is larger than the arc surface diameter at the other end.
8. A fisheye terminal according to claim 4, characterized in that, The inlet section (211) and the contact section (212) are arranged at an angle A, and the contact section (212) and the support section (213) are arranged at an angle B. Both the angle A and the angle B are obtuse angles less than 180°.
9. A fisheye terminal according to claim 8, characterized in that, The outer wall of the connection between the inlet section (211) and the contact section (212) has an arc-shaped transition, and the connection between the contact section (212) and the support section (213) has an arc-shaped transition.
10. A connector structure, characterized in that, Includes the fisheye terminal as described in any one of claims 1 to 9.