A metal shielding connection terminal structure

Abstract

The present invention discloses a metal shielding connection terminal structure, comprising an outer shell and an inner terminal, wherein the inner terminal is composed of a thin-walled body in an annular shape, and the outer shell is composed of a thick-walled body in an annular shape; the inner terminal has a first plug-in end and a second plug-in end, and one end portion of the outer shell is provided with an inner hook portion bent inwardly, wherein the inner terminal is provided with a first hollow groove for accommodating an elastic protrusion, and a second hollow groove for accommodating the elastic protrusion is provided at a preset position of the outer shell, and the first hollow groove and the second hollow groove are staggered; the inner and outer layers of the terminal structure are convenient for assembly, the inner terminal is a thin-walled body that can enhance the elastic force, and the outer shell is a thick-walled body that can provide mechanical support, and the hollow grooves on the outer shell and the inner terminal are staggered, so that no metal fault will occur, thereby ensuring the continuity of signal transmission, and providing a high-performance and easy-to-assemble connection terminal.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a metal shielding connection terminal structure. Background Art

[0002] With the continuous development of modern electronic equipment, signal transmission technology has been widely used in various industries, especially in the fields of communications, automotive electronics, industrial automation, etc. In order to meet the growing demand for data transmission, the design of the connector not only needs to ensure the rapid transmission of signals, but also needs to have high reliability and durability. Especially in some high-frequency or high-power electronic devices, the connection terminals play a vital role as transition terminals. These connection terminals are usually used to connect male and female components, or other signal transmission ports, and play the role of signal transition and current connection during the transmission process. With the development of miniaturization and high integration of equipment, the connection terminals need to have efficient and stable signal transmission functions, as well as excellent mechanical strength and long-term durability to cope with increasingly complex working environments and usage conditions.

[0003] In the existing terminal connection technology, the traditional design usually adopts a single metal material or a combined metal structure, which is manufactured by stamping, injection molding and other processes. However, in order to ensure the elastic strength of the connection, this common terminal connection structure often reduces the wall thickness, which will lead to a decrease in mechanical strength and easy deformation, or increases the wall thickness to ensure strength, but the elastic plug-in force is low, affecting the user experience. In particular, the design of the metal hollow groove usually leads to discontinuity of the signal transmission path and forms a metal fault in the terminal, thereby affecting the stability and transmission quality of the signal. It is impossible to provide sufficient mechanical support while ensuring the elastic connection force, resulting in increased assembly difficulty, and there may be delays and discontinuities in signal transmission.

[0004] In view of this, it is necessary to improve the connection terminal technology in the prior art to solve the technical problems of the inability to balance terminal performance and strength and low signal quality. Summary of the invention

[0005] The object of the present invention is to provide a metal shielding connection terminal structure to solve the above technical problems.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A metal shielding connection terminal structure comprises an outer shell and an inner terminal, wherein the inner terminal is composed of a ring-shaped thin-walled body, and the outer shell is composed of a ring-shaped thick-walled body;

[0008] The inner terminal has a first plug-in end and a second plug-in end, and the outer shell is sleeved outside the inner terminal to cover the first plug-in end and expose the second plug-in end;

[0009] An inner hook portion bent inward is provided at one end of the outer shell, a clamping groove is formed between the inner hook portion and the inner wall of the outer shell, and one end of the inner terminal is clamped in the clamping groove;

[0010] The inner terminal is provided with a first hollow groove for accommodating the elastic protrusion, and the outer shell is provided with a second hollow groove for accommodating the elastic protrusion at a preset position, and the first hollow groove and the second hollow groove are staggered.

[0011] Optionally, the thin-walled body of the inner terminal includes two flat plate portions that are arranged opposite to each other, and an arc-shaped curved surface portion for connecting the two flat plate portions.

[0012] Optionally, the first plug end is provided with an inner spring ring, the inner spring ring comprising a small spring located on the arc-shaped curved surface portion, and a large spring located on the flat plate portion;

[0013] The arc-shaped curved surface portion is provided with a first through groove, and the two ends of the small spring piece are respectively connected to the side walls of the first through groove, and the small spring piece is gradually convex inwardly from the two ends to the middle.

[0014] Optionally, the flat plate portion is provided with a second through groove, one end of the large elastic piece is connected to the side wall of the second through groove, and the large elastic piece includes a first elastic body, and second elastic bodies respectively located on both sides of the first elastic body;

[0015] The first elastic body is provided with a first protruding portion protruding inwardly, the second elastic body is provided with a second protruding portion protruding inwardly, and the first protruding portion is provided on a side of the second protruding portion away from the second plug-in end.

[0016] Optionally, the second plug-in end is provided with an outer spring ring, the outer spring ring includes a plurality of third elastic bodies, and the third elastic bodies are provided to gradually protrude outward from both ends to the middle.

[0017] Optionally, the outer shell is provided with a crack portion, which extends from one end of the outer shell to the other end, wherein the crack portion is used to provide an elastic clamping force.

[0018] The present invention also provides a manufacturing process of a metal shielding connection terminal structure, which is used to manufacture the metal shielding connection terminal structure as described above, and the manufacturing process comprises:

[0019] Step S1, selecting a suitable metal material, wherein the inner terminal is made of thin-walled metal material and the outer shell is made of thick-walled metal material;

[0020] Step S2: Use stamping technology to form the thin-walled metal material and the thick-walled metal material into the main structures of the annular inner terminal and the annular outer housing respectively;

[0021] Step S3: Use laser processing technology to process the preliminarily formed inner terminal, and process the plug-in ends for connecting the male and female head components and the hollow slots for subsequent elastic connection at both ends thereof. The recommended laser parameters are a power of 100W to 300W, and the cutting speed is controlled between 24m / min;

[0022] Step S4: Form an inner hook portion and a clamping groove at a predetermined portion of the outer housing through bending processing;

[0023] Step S5: Use laser processing technology and bending technology to process elastic protrusions at the hollow slot positions of the inner terminal and the outer housing, and stagger the elastic protrusions in space to optimize the signal transmission quality;

[0024] Step S6: Assemble the processed inner terminal and the outer housing in a predetermined assembly manner, and conduct conductivity, compressive resistance and durability tests on the assembled connection terminal. At the same time, conduct appearance inspection, cleaning and packaging.

[0025] Optionally, the specific steps of step S3 include:

[0026] S31: According to the product design requirements, determine the thickness and physical properties of the inner terminal. At the same time, calibrate the laser processing equipment;

[0027] S32: Place the preliminarily formed inner terminal on the laser cutting platform, and control the laser head to cut along a predetermined path through the numerical control system. The laser cutting head performs arc surface finishing on the arc-shaped curved surface portion of the inner terminal according to the design requirements;

[0028] S33: Use laser technology to punch holes at both ends of the inner terminal to form a first through groove and a jack of the first through groove;

[0029] S34: Use laser cutting technology to process two hollow slots on the inner terminal for accommodating elastic protrusions. The width of the slot opening is between 0.5mm and 1mm, and the depth is controlled between 0.3mm and 0.6mm. The laser power is set between 250W and 400W, and the cutting speed is set at 1.5m / min to 3m / min;

[0030] S35: After the laser cutting is completed, use laser fine-tuning technology to finely trim the edge of the inner terminal to remove existing minute burrs.

[0031] Optionally, the specific steps of step S6 include:

[0032] S61. Initially dock the processed inner terminal and the outer housing to ensure that the first plug end of the inner terminal is inserted into the corresponding position of the outer housing, and check whether the fit is tight.

[0033] S62. After initially docking the inner terminal and the outer housing, use an alignment tool for fixation to make the clamping groove of the outer housing fit tightly with the clamping part of the inner terminal.

[0034] S63. Conduct a conductivity test on the assembled connection terminal. Use a high-precision resistance test instrument to measure the resistance value of the connection part between the inner terminal and the outer housing. During the test, the connection terminal should be in the working state and be tested under different temperature environments to evaluate its conductivity performance under high load.

[0035] Optionally, step S6 further includes:

[0036] S64. Conduct a compressive strength test on the assembled connection terminal. Use a compression testing machine to conduct a vertical pressure test on the connection terminal. The pressure range is generally set between 50 N and 200 N. During the test, measure the deformation amount.

[0037] S65. Conduct multiple plugging and unplugging tests on the connection terminal to simulate the number of plugging and unplugging times that the terminal may experience during actual use, usually set between 1000 times and 5000 times. During the test, monitor the plugging and unplugging force and the electrical contact stability of the connection terminal.

[0038] S66. Conduct a sampling visual inspection to ensure that the surface of the connection terminal has no scratches or defects and meets the designed appearance standards.

[0039] Compared with the prior art, the present invention has the following beneficial effects: The structure of this connection terminal consists of an inner and an outer layer of terminals, which facilitates assembly. The inner terminal is a thin-walled body with plug ends at both ends, respectively used to connect the male and female head components. The thin wall can improve the elastic force to facilitate elastic connection with the connector head. Then, an outer housing is sleeved outside it, and a clamping connection is achieved through the clamping groove formed by the inner hook part to form a complete connection terminal. The outer housing is a thick-walled body that plays a role in mechanical support, and the hollow grooves on the outer housing and the inner terminal are staggered, so that there will be no metal fault in any cross-section of the connection terminal, which well ensures the continuity of signal transmission, thus well solving the problem of poor signal continuity caused by the hollow metal grooves in traditional connection terminals, and providing a high-performance and easy-to-assemble connection terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0041] The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, they do not have substantial technical significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention.

[0042] Figure 1 It is a schematic diagram of the overall structure of the metal shielding connection terminal structure of the first embodiment;

[0043] Figure 2 It is a schematic diagram of the component decomposition structure of the metal shielding connection terminal structure of the first embodiment;

[0044] Figure 3 It is a schematic diagram of the outer shell of the metal shielding connection terminal structure of the first embodiment;

[0045] Figure 4 It is a schematic diagram of the inner terminal of the metal shielding connection terminal structure of the first embodiment.

[0046] Illustration: Outer shell 100, inner terminal 200, first insertion end 203, second insertion end 204, inner hook part 110, clamping groove 111, first hollow groove 210, second hollow groove 120, flat part 220, arc curved surface part 230, inner elastic washer 240, small elastic piece 241, large elastic piece 242, first through groove 201, second through groove 202, first elastic body 2421, second elastic body 2422, first protrusion 2423, second protrusion 2424, outer elastic washer 250, crack part 101. Detailed implementation manners

[0047] To make the invention objectives, features, and advantages of the present invention more obvious and understandable, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0048] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component present.

[0049] The technical solution of the present invention will be further described below in conjunction with the drawings and through specific embodiments.

[0050] Embodiment 1:

[0051] Combined with Figures 1 to 4 As shown, the embodiment of the present invention provides a metal shielding connection terminal structure, including an outer housing 100 and an inner terminal 200. The inner terminal 200 is composed of a thin-walled body in a ring shape, and the outer housing 100 is composed of a thick-walled body in a ring shape; the inner terminal 200 has a first plug end 203 and a second plug end 204. The outer housing 100 is sleeved outside the inner terminal 200 to cover the first plug end 203 and expose the second plug end 204. Among them, both the outer housing 100 and the inner terminal 200 are made of metal materials.

[0052] It should be noted that the inner terminal 200 has a first plug end 203 and a second plug end 204. The first plug end 203 is located inside the outer housing 100 and is used to connect to a male head component. The first plug end 203 is an inner hole for plugging and unplugging. Due to the thin-walled body of the inner terminal 200, its inner wall can provide excellent elastic force to ensure the plugging and unplugging force with the male head component; at the same time, the first plug end 203 is covered with the outer housing 100, and the outer housing 100 provides mechanical protection and support to prevent the weak inner terminal 200 from being collided and deformed.

[0053] At the other end, the second plug end 204 is exposed outside the outer housing 100 and is used to connect to a female head component. Similarly, for the exposed end, due to the thin-walled body of the inner terminal 200, it can provide good elastic force, which is convenient for elastic connection with the female head component.

[0054] One end of the outer housing 100 is provided with an inner hook portion 110 that bends inward. A clamping groove 111 is formed between the inner hook portion 110 and the inner wall of the outer housing 100. One end of the inner terminal 200 is clamped in the clamping groove 111; along the plugging direction of the inner terminal 200, the inner hook portion 110 can be limited. Among them, the inner hook portion 110 also has a certain elastic force, and its inner side can tightly hold the inner terminal 200 to prevent the inner terminal 200 from sliding.

[0055] The inner terminal 200 is provided with a first hollow groove 210 for accommodating the elastic protrusion, and the outer shell 100 is provided with a second hollow groove 120 for accommodating the elastic protrusion at a preset position, and the first hollow groove 210 and the second hollow groove 120 are staggered.

[0056] It should be noted that the elastic protrusion at the first hollow groove 210 protrudes inwardly, and is used for elastic connection with the male component, that is, to provide an elastic snap-fitting effect. The elastic protrusion at the second hollow groove 120 protrudes outwardly and inwardly, and is used for elastic connection with the female component or the external electrical connector. This is provided on conventional connecting terminals. The advantage of this solution is that the elastic protrusions on the inner and outer sides are cleverly staggered by separately arranged outer shell 100 and inner terminal 200, which can ensure that there is at least metal material at the position of any elastic protrusion, effectively avoiding signal transmission interruption or detour, reducing signal interruption and signal delay, and improving signal transmission quality.

[0057] The working principle of the present invention is as follows: the connecting terminal structure is composed of two layers of terminals, inner and outer, which are convenient for assembly. The inner terminal 200 is a thin-walled body with plug-in ends at both ends, which are respectively used to connect the male and female components. The thin wall can improve the elastic force to facilitate elastic connection with the connector. Then the outer shell 100 is sleeved on its outer side, and the snap-fitting groove 111 formed by the inner hook 110 is realized to form a complete connecting terminal. The outer shell 100 is a thick-walled body that plays a role of mechanical support, and the hollow grooves on the outer shell 100 and the inner terminal 200 are staggered, which makes it possible for no metal fault to appear in any cross section of the connecting terminal, which well ensures the continuity of signal transmission, thereby well solving the problem of poor signal continuity caused by the hollow metal grooves in the traditional connecting terminal, and providing a high-performance and easy-to-assemble connecting terminal.

[0058] In this embodiment, the thin-walled body of the inner terminal 200 includes two oppositely disposed flat plate portions 220, and an arc-shaped curved portion 230 for connecting the two flat plate portions 220. That is, the inner terminal 200 of this solution is elliptical as a whole, but has a flat plate portion 220. This flat plate portion 220 can provide an elastically raised manufacturing position in the manufacturing process, reduce the difficulty of positioning and grooving the curved surface, and facilitate the manufacturing process.

[0059] In this embodiment, it is specifically described that the first plug-in end 203 is provided with an inner spring ring 240, and the inner spring ring 240 includes a small spring 241 located on the arc-shaped curved portion 230, and a large spring 242 located on the flat portion 220; the arc-shaped curved portion 230 is provided with a first through groove 201, and the two ends of the small spring 241 are respectively connected to the side walls of the first through groove 201, and the small spring 241 is gradually protruded inward from its two ends to the middle.

[0060] It should be noted that the first plug-in end 203 connected to the male head component in this solution is composed of a ring of elastic pieces. The purpose of its setting is that by setting two different elastic piece structures on the arc-shaped curved surface part 230 and the flat plate part 220 respectively. Since the arc-shaped curved surface part 230 itself protrudes outward, it inherently has a certain elastic force. At this time, setting the small elastic piece 241 can ensure the provision of sufficient elastic force. However, for the flat plate part 220, since the thin walls on both sides are prone to sink toward the middle during the deformation process of the inner terminal 200, the large elastic piece 242 different from the small elastic piece 241 is set to ensure the balance of the elastic acting force.

[0061] In this embodiment, it is further explained that the flat plate part 220 is provided with a second through groove 202. One end of the large elastic piece 242 is connected to the side wall of the second through groove 202. The large elastic piece 242 includes a first elastic body 2421 and second elastic bodies 2422 respectively located on both sides of the first elastic body 2421. Among them, the first elastic body 2421 is provided with a first convex part 2423 protruding inward, and the second elastic body 2422 is provided with a second convex part 2424 protruding inward. The first convex part 2423 is arranged on the side of the second convex part 2424 away from the second plug-in end 204.

[0062] It should be noted that as mentioned before, the setting method of the large elastic piece 242 is in cooperation with the small elastic piece 241, and its purpose is to ensure the balance of the elastic acting force. Now, the composition structure and principle of the large elastic piece 242 are specifically described. It includes a first elastic body 2421 in the middle and second elastic bodies 2422 respectively located on the left and right sides, consisting of a total of three elastic bodies, and only one end of it is connected to the side wall of the second through groove 202, which is different from the small elastic piece 241 body. This is because during the deformation process of the inner terminal 200, the thin walls on both sides are prone to sink toward the middle. Therefore, in order to ensure that the large elastic piece 242 here has sufficient deformation space and will not damage the internal male head component, a hollow structure is set, and the first elastic body 2421 and the second elastic body 2422 that are more prone to deformation (because only one end is connected) ensure the balance of the elastic acting force in this way.

[0063] Furthermore, the first protrusion 2423 is disposed on the side of the second protrusion 2424 away from the second insertion end 204, such that the first protrusion 2423 is closer to the insertion direction of the male head assembly. Therefore, during the insertion process, the first protrusion 2423 is elastically clamped with the male head assembly first, playing a role of pre-clamping (facilitating the adjustment of the insertion position of the male head during the insertion process); then, as the male head assembly is gradually inserted, the second protrusion 2424 is elastically clamped with the male head assembly. Since there are two second protrusions 2424 arranged on the left and right, they can provide a greater elastic clamping force, thus playing a role of elastic positioning. Through the cooperative action of the first elastic body 2421 and the second elastic body 2422, the insertion process of the male head assembly can be decomposed into two more reasonable processes, improving the smoothness of insertion and reducing the occurrence of jamming.

[0064] In this embodiment, an outer elastic washer 250 is provided at the second insertion end 204. The outer elastic washer 250 includes a plurality of third elastic bodies, and the third elastic bodies are gradually convex outward from both ends to the middle, playing a role of providing elastic support force.

[0065] A crack portion 101 is provided on the arc-shaped curved surface portion 230. The crack portion 101 extends from one end of the outer housing 100 to the other end. Among them, the crack portion 101 is used to provide elastic clamping force.

[0066] It should be noted that the outer housing 100 of this solution also provides an elastic clamping force by providing the crack portion 101, which is convenient for positioning and matching with the inner terminal 200.

[0067] Embodiment 2:

[0068] The present invention also provides a manufacturing process for a metal shielded connection terminal structure for manufacturing the metal shielded connection terminal structure as in Embodiment 1. The manufacturing process includes:

[0069] Step S1, select suitable metal materials. Among them, the inner terminal 200 uses a thin-walled metal material, and the outer housing 100 uses a thick-walled metal material.

[0070] Step S2, use stamping technology to form the thin-walled metal material and the thick-walled metal material into the main structures of the annular inner terminal 200 and the annular outer housing 100 respectively; only the basic annular contour is formed at this stage, without other additional structures.

[0071] Step S3, use laser processing technology to process the preliminarily formed inner terminal 200, and process insertion ends for connecting the male head and the female head assemblies and hollow slots for subsequent elastic connection at both ends thereof. The recommended laser parameters are a power of 100W to 300W, and the cutting speed is controlled between 24m / min.

[0072] Step S4, form an inner hook portion 110 and a clamping groove 111 at a predetermined portion of the outer casing 100 through bending processing; so as to facilitate the locking and assembly of the inner terminal 200 and the outer casing 100, and ensure that the dimensional accuracy of the clamping groove 111 is controlled within ±0.05 mm.

[0073] Step S5, use laser processing technology and bending technology to process elastic protrusions at the hollow groove positions of the inner terminal 200 and the outer casing 100, and stagger the elastic protrusions in space to optimize the signal transmission quality; the laser power is set between 150 W and 250 W, and the cutting speed is 12 m / min.

[0074] Step S6, assemble the processed inner terminal 200 and the outer casing 100 in a predetermined assembly manner, and perform conductivity, compressive resistance and durability tests on the assembled connection terminals, and at the same time perform appearance inspection, cleaning and packaging.

[0075] The beneficial effects of this manufacturing process are as follows: Through precise laser processing, injection molding technology and elastic protrusion design, excellent performance and high reliability of the metal shielding connection terminals are ensured. The separate design of the inner terminal 200 and the outer casing 100 enables the connection terminals to have good elastic connectivity, which can ensure smooth plugging and unplugging operations and provide stable electrical contact. The staggered arrangement of the hollow grooves and the elastic protrusions effectively improves the signal transmission quality and avoids interruption or delay in signal transmission. The whole method not only improves the conductivity, compressive resistance and durability of the product, but also optimizes the production process, reduces material waste and manual errors, improves production efficiency and product quality, and ensures the stability and performance of the metal shielding connection terminals under high load and high-frequency use conditions.

[0076] In this embodiment, specifically, the step S3 specifically includes:

[0077] S31, according to the product design requirements, determine the thickness and physical properties of the inner terminal 200, and at the same time, calibrate the laser processing equipment;

[0078] First, select a suitable thin-walled metal material (such as high-strength copper alloy or aluminum alloy), and according to the product design requirements, determine its thickness and physical properties to ensure that it has good electrical conductivity and elasticity. At the same time, calibrate the laser processing equipment to ensure that the laser power, focal length and cutting speed meet the process requirements. The power of the laser equipment is generally set between 300 W and 500 W, and the focal diameter is usually controlled between 0.1 mm and 0.2 mm to ensure the cutting accuracy.

[0079] S32. Place the preliminarily formed inner terminal 200 on the laser cutting platform, and control the laser head to cut along a predetermined path through the numerical control system. According to the design requirements, the laser cutting head performs arc surface finishing on the arc-shaped curved surface portion 230 of the inner terminal 200.

[0080] During the cutting process, the cutting speed of the laser head is controlled between 2 m / min and 4 m / min, and the laser power is adjusted according to the material thickness, usually 350 W. Special attention should be paid to the smoothness of the cutting edge during the cutting process to avoid burrs and ensure that the shape of the inner terminal 200 meets the requirements.

[0081] S33. Use laser technology to punch holes at both ends of the inner terminal 200 to form the first through groove 201 and the insertion hole of the first through groove 201.

[0082] The sizes of these insertion holes are designed according to the matching requirements of the male and female head components, generally between 0.5 mm and 2 mm. The laser punching process requires high-precision control of the laser focal length and cutting speed to ensure that the roundness and perpendicularity of the insertion holes meet the requirements. The laser power in this step is controlled between 100 W and 200 W, and the punching speed is about 1 mm / s to 2 mm / s to avoid material deformation caused by overheating.

[0083] S34. Use laser cutting technology to process two hollow grooves on the inner terminal 200 for accommodating elastic protrusions. The width of the groove opening is between 0.5 mm and 1 mm, and the depth is controlled between 0.3 mm and 0.6 mm. The laser power is set between 250 W and 400 W, and the cutting speed is set at 1.5 m / min to 3 m / min.

[0084] The laser cutting head precisely cuts the hollow grooves along the predetermined path to ensure that the width and depth of the groove opening meet the design standards. Usually, the temperature needs to be strictly controlled during this process to avoid overheating resulting in material charring or deformation.

[0085] S35. After the laser cutting is completed, use laser fine-tuning technology to finely trim the edge of the inner terminal 200 to remove existing micro burrs.

[0086] This process performs micro cutting and cleaning along the cutting edge through a high-precision laser beam to ensure that the surface of the inner terminal 200 is smooth and flawless, meeting the requirements for subsequent assembly. During this process, the laser power is set between 150 W and 250 W, and the adjustment speed is 0.5 m / s to ensure uniform cutting effect.

[0087] In this embodiment, specifically, the step S6 specifically includes:

[0088] S61. Initially dock the processed inner terminal 200 and the outer housing 100 to ensure that the first insertion end 203 of the inner terminal 200 is inserted into the corresponding position of the outer housing 100, and check whether the fit is tight;

[0089] Avoid looseness or mismatch. This step requires the use of high-precision assembly jigs and positioning equipment to ensure the accurate docking of the inner terminal 200 and the outer housing 100 in the axial and radial directions. The jig should have a fine-tuning function to compensate for minor errors in processing.

[0090] S62. After the initial docking of the inner terminal 200 and the outer housing 100, use an alignment tool for fixation to make the snap groove 111 of the outer housing 100 fit tightly with the snap-in part of the inner terminal 200;

[0091] Ensure the stability of the connection. During this process, use a fixture or a spring clamp for mechanical locking to ensure that the two parts can remain fixed during subsequent operations. The snap-in process requires pressure monitoring through automated equipment to ensure that the pressure is uniform and meets the standard requirements.

[0092] S63. Conduct a conductivity test on the assembled connection terminal. Use a high-precision resistance test instrument to measure the resistance value of the connection part between the inner terminal 200 and the outer housing 100. During the test, the connection terminal should be in a working state and tested under different temperature environments to evaluate its conductivity performance under high load.

[0093] Ensure that it can conduct current smoothly during use. Use a high-precision resistance test instrument to measure the resistance value of the connection part between the inner terminal 200 and the outer housing 100. During the test, the connection terminal should be in a working state and tested under different temperature environments to evaluate its conductivity performance under high load. The resistance value needs to meet the design requirements, usually requiring the resistance value to be less than 0.01 Ω.

[0094] S64. Conduct a compressive resistance test on the assembled connection terminal. Use a compression testing machine to conduct a vertical pressure test on the connection terminal. The pressure range is generally set between 50 N and 200 N. During the test, measure the deformation amount;

[0095] Ensure that it can withstand external pressure without deformation. Use a compression testing machine to conduct a vertical pressure test on the connection terminal. The pressure range is generally set between 50 N and 200 N, and the specific value is adjusted according to the design requirements. During the test, measure the deformation amount to ensure that the deformation amount does not exceed the design limit, usually the deformation amount does not exceed 0.1 mm.

[0096] S65. Conduct multiple plugging and unplugging tests on the connection terminals to simulate the number of plugging and unplugging cycles that the terminals may experience during actual use, usually set to 1000 to 5000 times. During the test, monitor the plugging and unplugging force and the electrical contact stability of the connection terminals;

[0097] Ensure that it can maintain good performance. After the plugging and unplugging test, a vibration test also needs to be carried out to simulate the vibration effects that may occur during long-term use.

[0098] S66. Conduct a sampling visual inspection to ensure that the surface of the connection terminals has no scratches, no defects, and meets the designed appearance standards.

[0099] Use a microscope to inspect the surface of the connection terminals for minute defects to ensure that every detail is correct. Subsequently, use an ultrasonic cleaner or chemical cleaning agent to clean the surface of the connection terminals to remove any possible residual oil, dust, and other impurities, ensuring the cleanliness and pollution-free state of the connection terminals.

[0100] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A metal shielding connection terminal structure, characterized in that: It comprises an outer shell (100) and an inner terminal (200), wherein the inner terminal (200) is composed of a ring-shaped thin-walled body, and the outer shell (100) is composed of a ring-shaped thick-walled body; The inner terminal (200) has a first plug end (203) and a second plug end (204); the outer shell (100) is sleeved outside the inner terminal (200) to cover the first plug end (203) and expose the second plug end (204); An inner hook portion (110) bent inwardly is provided at one end of the outer shell (100), a clamping groove (111) is formed between the inner hook portion (110) and the inner wall of the outer shell (100), and one end of the inner terminal (200) is clamped in the clamping groove (111); The inner terminal (200) is provided with a first hollow groove (210) for accommodating the elastic protrusion, and the outer shell (100) is provided with a second hollow groove (120) for accommodating the elastic protrusion at a preset position, and the first hollow groove (210) and the second hollow groove (120) are staggered; and both the outer shell (100) and the inner terminal (200) are made of metal.

2. The metal shielding connection terminal structure according to claim 1, characterized in that: The thin-walled body of the inner terminal (200) comprises two flat plate portions (220) arranged opposite to each other, and an arc-shaped curved portion (230) for connecting the two flat plate portions (220).

3. The metal shielding connection terminal structure according to claim 2, characterized in that: The first plug end (203) is provided with an inner spring ring (240), the inner spring ring (240) comprising a small spring (241) located on the arc-shaped curved surface portion (230), and a large spring (242) located on the flat plate portion (220); The arc-shaped curved surface portion (230) is provided with a first through groove (201), the two ends of the small spring piece (241) are respectively connected to the side walls of the first through groove (201), and the small spring piece (241) is gradually convex inwardly from the two ends to the middle.

4. The metal shielding connection terminal structure according to claim 3, characterized in that: The flat plate portion (220) is provided with a second through-groove (202); one end of the large elastic piece (242) is connected to a side wall of the second through-groove (202); the large elastic piece (242) comprises a first elastic body (2421) and second elastic bodies (2422) respectively located on two sides of the first elastic body (2421); The first elastic body (2421) is provided with a first protruding portion (2423) protruding inwardly, the second elastic body (2422) is provided with a second protruding portion (2424) protruding inwardly, and the first protruding portion (2423) is arranged on a side of the second protruding portion (2424) away from the second plug end (204).

5. The metal shielding connection terminal structure according to claim 1, characterized in that: The second plug end (204) is provided with an outer spring ring (250), the outer spring ring (250) comprising a plurality of third elastic bodies, the third elastic bodies being provided to gradually bulge outwards from both ends to the middle.

6. The metal shielding connection terminal structure according to claim 1, characterized in that: The outer shell (100) is provided with a crack portion (101), and the crack portion (101) extends from one end of the outer shell (100) to the other end, wherein the crack portion (101) is used to provide an elastic clamping force.

7. A manufacturing process of a metal shielding connection terminal structure, characterized in that: Used to manufacture the metal shielding connection terminal structure according to any one of claims 1 to 6, the manufacturing process comprising: Step S1, selecting a metal material, wherein the inner terminal is made of a thin-walled metal material, and the outer shell is made of a thick-walled metal material; Step S2, using stamping technology to form the thin-walled metal material and the thick-walled metal material into the main structure of the annular inner terminal and the annular outer shell respectively; Step S3, using laser processing technology to process the preliminarily formed inner terminal, and processing the plug-in ends for connecting the male and female components and the hollow grooves for subsequent elastic connection at both ends of the inner terminal, the laser parameter power is 100W to 300W, and the cutting speed is controlled between 2m / min and 4m / min; Step S4, forming an inner hook portion and a clamping groove by bending a predetermined portion of the outer shell; Step S5, using laser processing technology and bending technology to process elastic protrusions at the hollow groove positions of the inner terminal and the outer shell, and stagger the elastic protrusions in space to optimize signal transmission quality; Step S6, assembling the processed inner terminal with the outer shell, and performing conductivity, pressure resistance and durability tests on the assembled connecting terminal, and performing appearance inspection, cleaning and packaging at the same time.

8. The manufacturing process of the metal shielding connection terminal structure according to claim 7, characterized in that: The step S3 specifically includes: S31, determine the thickness and physical characteristics of the inner terminal according to the product design requirements, and calibrate the laser processing equipment; S32, placing the preliminarily formed inner terminal on a laser cutting platform, controlling the laser head to cut along a predetermined path through a numerical control system, and the laser cutting head performs arc surface finishing on the arc-shaped curved portion of the inner terminal according to design requirements; S33, using laser technology to punch holes at both ends of the inner terminal to form a first through groove and a plug hole of the first through groove; S34, using laser cutting technology to process two hollow grooves on the inner terminal to accommodate the elastic protrusion, the groove width is between 0.5mm and 1mm, and the depth is controlled between 0.3mm and 0.6mm; S35, after laser cutting is completed, the edge of the inner terminal is finely trimmed using laser trimming technology to remove any tiny burrs.

9. The manufacturing process of the metal shielding connection terminal structure according to claim 8, characterized in that: The step S6 specifically includes: S61, preliminarily docking the processed inner terminal and the outer shell, ensuring that the first plug-in end of the inner terminal is inserted into the corresponding position of the outer shell, and checking whether the fit is tight; S62, after completing the preliminary docking of the inner terminal and the outer shell, use an alignment tool to fix them so that the clamping groove of the outer shell and the clamping part of the inner terminal are closely matched; S63, conduct conductivity test on the assembled connection terminals, and use high-precision resistance testing instruments to measure the resistance value of the connection between the inner terminal and the outer shell. During the test, the connection terminals should be in working condition and tested under different temperature environments to evaluate their conductivity performance under high load.

10. The manufacturing process of the metal shielding connection terminal structure according to claim 9, characterized in that: The step S6 further comprises: S64, performing a compression test on the assembled connecting terminals, using a compression testing machine to perform a vertical pressure test on the connecting terminals, with the pressure range set between 50N and 200N. During the test, the deformation is measured; S65, multiple plugging and unplugging tests on the connection terminals, simulating the number of plugging and unplugging times that the terminals experience in actual use, set to 1000 to 5000 times. During the test, the plugging and unplugging force and electrical contact stability of the connection terminals are monitored; S66, conduct random appearance inspection to ensure that the surface of the connection terminals is free of scratches and defects and meets the designed appearance standards.

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