CF card connector terminal material belt structure and CF card connector manufacturing method thereof
By designing the terminal tape structure of the CF card connector, the welding foot extends to the rear end side of the main body part, and space is reserved for connecting the tape, which solves the problem of uneven welding foot, improves the product's excellent rate and production efficiency, and reduces costs.
Patent Information
- Application Number
- CN202510097895.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-04-11
AI Technical Summary
The welding feet of existing CF card connectors are not flat, resulting in poor welding and low reliability, and the traditional dip-golding process is costly.
A CF card connector terminal tape structure is designed, in which the welding foot extends on the rear end side of the main body part, and space is reserved for connecting the material tape to avoid direct connection between the welding foot and the material tape. The point plating and stamping process are adopted, combined with secondary plating and riveting devices, to improve the flatness of the welding foot and the excellent product rate.
Through this design, the problem of uneven welding feet is solved, the product's excellent rate and production efficiency are improved, and the cost is reduced.
Smart Images
Figure CN119812809A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of CF card connector technology, and in particular to a CF card connector terminal strip structure and a CF card connector manufacturing method. Background Art
[0002] CF (Compact Flash) card is a data storage device for portable electronic devices. As a storage device, it revolutionized the use of flash memory. It was first produced by SanDisk in 1994 and the relevant specifications were formulated. Currently, its physical format has been adopted by a variety of devices, such as computers, servers, and cameras. The CF card holder is a device for accommodating CF cards. For CF card connectors, the flatness of all its terminal pins is an important factor affecting its working performance. In particular, if the flatness of the terminal pins on the back of the terminal is too low, it will make the CF card connector difficult to solder and install, which will easily cause unstable data transmission.
[0003] The traditional CF card connector welding pins are connected to the material strip. In order to ensure the flatness of the CF card connector welding pins, most of the products on the market currently rely on shaping after cutting the material strip to ensure its flatness. However, shaping is difficult, and poor welding is easy to occur during use, and the reliability is low. The current products on the market have high costs. The main cost is that the electroplating process uses immersion gold plating, and the cost of immersion gold plating is very high. In addition, the spring contact area of the traditional terminal is on the inside. If the brush plating process is used, the film thickness cannot meet the requirements. Summary of the invention
[0004] In view of this, the present invention aims at the deficiencies in the prior art, and its main purpose is to provide a CF card connector terminal strip structure and a CF card connector manufacturing method thereof, which solves the problem of uneven soldering feet.
[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: a CF card connector terminal strip structure, including a terminal and a strip connected to the terminal, the terminal including a main body, a contact portion extending from the front end of the main body, and a solder foot portion extending and bent on one side of the rear end of the main body, wherein the strip has a connecting portion, the connecting portion is connected to the rear end surface of the main body, and is arranged at intervals with the solder foot portion.
[0006] In one embodiment, the contact portion includes two spring sheets arranged at intervals up and down, and both of the spring sheets include a connecting end and an elastic contact end, the connecting end is connected to the main body, and the elastic contact end is located at the end of the spring sheet away from the connecting end, and the distance between the two elastic contact ends is smaller than the distance between the two connecting ends.
[0007] In one embodiment, the inner surface of the elastic contact end is a contact surface, and the contact surface is electroplated with a gold layer.
[0008] A method for manufacturing a CF card connector comprises the following steps: 1) Pre-punch positioning holes on the stamping sheet. 2) Spot-plated contact surface: Use the pre-punched positioning holes to accurately position and spot-plated gold on the contact surface of the corresponding elastic contact end on the terminal stamping sheet 3) Stamping terminals: Stamp the stamping sheet from the previous process to produce a long terminal strip group and a short terminal strip group; Each terminal in the long terminal strip group and the short terminal strip group includes a main body, a contact portion extending from the front end of the main body, and a solder leg portion extending and bent at one side of the rear end of the main body, wherein the strip has a connecting portion, the connecting portion is connected to the rear end surface of the main body, and is arranged at intervals with the solder leg portion; 4) Secondary electroplating: electroplating the stamped terminals, electroplating the tin layer on each solder leg and the nickel layer on the stamped end surface; 5) Rewinding: Rewind the long terminal strip group and the short terminal strip group onto the reels respectively; 6) Number of PINs for cutting ends: Pull out a section of the long terminal strip group and the short terminal strip group from the corresponding reels and load them into the end cutting machine, and cut the long terminal strip group into a first long terminal strip group of 12PIN and a second long terminal strip group of 13PIN respectively; Cutting the short terminal strip group into a first short terminal strip group of 12 PIN and a second short terminal strip group of 13 PIN respectively; 7) Terminal assembly: Insert the first short terminal strip group into the corresponding terminal slot of the plastic core and perform riveting. After the riveting is completed, break the corresponding strip from the rear end face of the main body; Sequentially assembling the second short terminal strip group, the first long terminal strip group, and the second long terminal strip group according to the assembly method of the first short terminal strip group; 8) Welding foot inspection: Use CCD to inspect the flatness of the welding foot; 9) Shell assembly: Assemble the shell onto the rubber core; 10) Shell foot detection: Use CCD to detect the flatness of the shell foot; 11) Full inspection: conduct all-round inspection on the product; 12) Carrier tape packaging: The qualified products after full inspection are packaged with carrier tape; 13) Carrier tape inspection: Pull out the products packed in the carrier tape again to inspect the product quality; 14) Packing and sealing: Pack and seal the carrier tape.
[0009] In one embodiment, in step 6), a plastic core jig and a riveting device are used during the terminal assembly process; The riveting device comprises a frame, a lower die assembly and an upper die assembly arranged on the frame; the upper die assembly is above the lower die assembly; The lower mold assembly moves forward and backward under the drive of the first driving member; the lower mold assembly includes a base, a positioning block, a slider and a pressure block, the positioning block is arranged at the front end of the upper surface of the base, a positioning groove for positioning the rubber core jig is provided on the positioning block, an avoidance groove is provided on the rear end surface of the positioning block, and the rear end of the main body of the terminal group extends into the avoidance groove; the slider is slidably arranged on the upper surface of the base and is located behind the positioning block, a first inclined surface is provided on the rear end surface of the slider, and a first spring is connected between the slider and the positioning block; the pressure block is arranged at the front end of the slider and moves in the avoidance groove with the slider; The upper mold assembly moves up and down under the drive of the second driving member. The upper mold assembly includes a mounting seat and a driving block arranged at the rear end of the lower surface of the mounting seat, and a second inclined surface is arranged at the lower end of the driving block; When assembling the terminals, first, insert the first short terminal strip group into the corresponding terminal slot of the rubber core; Next, install the rubber core onto the rubber core jig, and place the rubber core jig into the positioning groove; Then, the riveting device is started, the first driving member drives the lower die assembly to come under the upper die assembly, and the second driving member drives the upper die assembly to press down. When the second inclined surface presses down against the first inclined surface, the slider moves toward the positioning block, and the pressing block moves with the slider and presses against the contact surface at the rear end of the main body, and the corresponding terminal strip group is riveted into the corresponding terminal groove of the rubber core; Furthermore, the second driving member drives the upper mold assembly to rise, the slider is reset under the elastic force of the first spring, the first driving member drives the lower mold assembly to move out, and the material strip on the first short terminal material strip group is manually broken; The second short terminal strip group, the first long terminal strip group, and the second long terminal strip group are assembled in sequence according to the assembly method of the first short terminal strip group.
[0010] In one embodiment, the upper mold assembly further includes a terminal anti-warping block and a rubber core pre-pressing block provided on the lower surface of the mounting seat, and the terminal anti-warping block and the mounting seat, the rubber core pre-pressing block and the mounting seat fixture are elastically connected by a second spring, the terminal anti-warping block is located at the front end of the driving block, and the rubber core pre-pressing block is located at the front end of the terminal anti-warping block; During riveting, the terminal anti-warping block presses against the upper surface of the material strip to prevent the terminal from deforming during riveting, and the rubber core pre-pressing block presses against the upper surface of the rubber core to prevent the rubber core from moving. The terminal anti-warping block and the rubber core pre-pressing block elastically float and press under the action of their respective second springs.
[0011] In one embodiment, the terminal anti-warping block and the rubber core pre-compression block are both structures with a larger upper portion and a smaller lower portion, and the upper ends of the terminal anti-warping block and the rubber core pre-compression block are both located in a mounting seat. A sealing plate is provided on the mounting seat, and the sealing plate limits the upper ends of the terminal anti-warping block and the rubber core pre-compression block to be located in the mounting seat.
[0012] In one embodiment, the lower mold assembly also includes a column arranged on the base, the upper end of the column passes through the slider, and a stop block is provided on the side of the upper end of the column, and the lower surface of the stop block is against the upper surface of the slider to prevent the slider from tilting upward; correspondingly, an avoidance hole for avoiding the column is opened on the mounting seat.
[0013] In one embodiment, during step 7) weld foot detection and step 9) shell foot detection, CCD detection is provided with a baseline and a control line. When the weld foot and the shell foot are within the range of the baseline and the control line, they are qualified; when they are beyond the range of the baseline and the control line, they are unqualified. The maximum distance between the baseline and the control line is 0.1 mm.
[0014] In one embodiment, during CCD detection, a positioning detection fixture is used to position the product; the positioning detection fixture includes a base with a product positioning groove on the upper surface, the base has a weld foot platform, the welding surface of the weld foot is attached to the weld foot platform, and the weld foot platform is set as a reference line; adjustment components are respectively provided at both ends of the product positioning groove, and the adjustment components include an adjustment block, a screw and an adjustment spring, one end of the adjustment block extends into the end of the product positioning groove; the screw passes through the adjustment block and is threadedly connected to the side of the base; the spring is sleeved on the screw, one end of which is against the outer surface of the adjustment block, and the other end is against the screw.
[0015] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that: By extending the solder leg on one side of the rear end of the main body, space is reserved on the rear end surface of the main body for connecting the material strip, so that the solder leg and the material strip are no longer connected, thereby solving the problem of deformation of the solder leg caused by cutting the material strip, ensuring the flatness of the solder leg, and improving the quality rate of the product.
[0016] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the manufacturing process of an embodiment of the present invention; Figure 2 This is a structural diagram of a terminal strip according to an embodiment of the present invention; Figure 3 is a three-dimensional diagram of a riveting device used in an embodiment of the present invention; Figure 4 It is a schematic diagram of assembling the lower die assembly and the upper die assembly in the riveting device according to an embodiment of the present invention; Figure 5 is a schematic structural diagram of an upper mold assembly according to an embodiment of the present invention; Figure 6 It is a structural schematic diagram of a lower mold assembly according to an embodiment of the present invention; Figure 7 It is a structural schematic diagram of a positioning detection fixture according to an embodiment of the present invention.
[0018] Reference numerals: 10. Terminal 11. Main body 12. Contact part 13. Welding foot part 121, shrapnel 1211, connection end 1212, elastic contact end 111, resistance surface 1213, Gold Layer 20. Material strip 21. Connecting part 30. Terminal pre-punched plate 40. Rubber core 50. Shell 51. Shell foot 60. Rubber core jig 61. Positioning slot 70. Riveting device 71. Frame 72. Lower mold assembly 73. Upper mold assembly 74. First driving member 75. Second driving member 721, base 722, positioning block 723, slider 724, pressure block 725, column 726, block 7231, first slope 701, avoidance groove 702, avoidance hole 731, mounting seat 732, driving block 7321, second inclined surface 733, terminal anti-warping block 734, rubber core and pressing block 735, Closing the Board 90. Position detection fixture 91. Base 92. Adjustment component 901. Product positioning slot 911, welding foot platform 921, adjustment block 922. Screw 923. Adjustment spring. DETAILED DESCRIPTION
[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0020] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0021] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present application.
[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0023] See also Figures 1 to 7 As shown, the present application provides a CF card connector terminal strip structure, including a terminal 10 and a strip 20 connected to the terminal 10, wherein the terminal 10 includes a main body 11, a contact portion 12 extending from the front end of the main body 11, and a solder foot portion 13 extending and bent on one side of the rear end of the main body 11, wherein the strip 20 has a connecting portion 21, the connecting portion 21 is connected to the rear end surface of the main body 11, and is arranged at intervals with the solder foot portion 13.
[0024] By extending the solder leg 13 on one side of the rear end of the main body 11, space is reserved on the rear end surface of the main body for connecting the material strip 20, so that the solder leg 13 and the material strip 20 are no longer connected, thereby solving the problem of deformation of the solder leg caused by cutting the material strip, ensuring the flatness of the solder leg, and improving the quality rate of the product.
[0025] In one embodiment, the contact portion 12 includes two spring pieces 121 spaced apart from each other, each of the two spring pieces 121 includes a connection end 1211 and an elastic contact end 1212, the connection end 1211 is connected to the main body 11, the elastic contact end 1212 is located at the end of the spring piece 121 away from the connection end 1211, and the distance between the two elastic contact ends 1212 is smaller than the distance between the two connection ends 1211. Through this spring piece structure, the contact of the plugged terminal can be more stable.
[0026] In one embodiment, the inner surface of the elastic contact end 1212 is a contact surface, and the contact surface is electroplated with a gold layer 1213. By plating the gold layer 1213 on the contact surface, the amount of gold used is reduced, saving costs.
[0027] A method for manufacturing a CF card connector comprises the following steps: 1) Pre-punching positioning holes on the stamping sheet to form a terminal pre-punched sheet 30; 2) Spot-plated contact surface: Precisely position the pre-punched positioning holes and spot-plate the gold layer 1213 on the contact surface of the corresponding elastic contact end 1212 on the terminal pre-punched plate 30; the gold layer 1213 is made on the terminal pre-punched plate 30 in advance by spot plating. Compared with the traditional immersion gold plating process, the amount of gold used is reduced, the cost is saved, and the thickness of the coating can be guaranteed.
[0028] 3) Stamping terminals: Stamp the terminal pre-punched sheet 30 to punch out a long terminal strip group and a short terminal strip group; use a corresponding punching machine to punch out a corresponding terminal structure; Each terminal 10 in the long terminal strip group and the short terminal strip group includes a main body 11, a contact portion 12 extending from the front end of the main body 11, and a solder foot portion 13 extending and bent on one side of the rear end of the main body 11, wherein the strip 20 has a connecting portion 21, which is connected to the rear end surface of the main body 11 and is arranged at intervals with the solder foot portion 13.
[0029] By extending the solder leg 13 on one side of the rear end of the main body 11, space is reserved on the rear end surface of the main body for connecting the material strip 20, so that the solder leg 13 and the material strip 20 are no longer connected, thereby solving the problem of deformation of the solder leg caused by cutting the material strip and ensuring the flatness of the solder leg.
[0030] 4) Secondary electroplating: First spot-plating the contact surface, then stamping the terminal, and then performing secondary electroplating on the stamped terminal (electroplated tin layer on each solder leg and nickel layer on the stamped end surface); optimize the production and turnover process to reduce product deformation.
[0031] 5) Rewinding: Rewind the long terminal strip group and the short terminal strip group onto the reels respectively; 6) Number of PINs for cutting ends: Pull out a section of the long terminal strip group and the short terminal strip group from the corresponding reels and load them into the end cutting machine, and cut the long terminal strip group into a first long terminal strip group of 12PIN and a second long terminal strip group of 13PIN respectively; The short terminal strip groups are cut into a first short terminal strip group of 12 PIN and a second short terminal strip group of 13 PIN respectively; the four terminal strip groups have a total of 50 PIN terminals.
[0032] 7) Terminal assembly: insert the first short terminal strip group into the corresponding terminal slot of the plastic core 40, and perform riveting. After the riveting is completed, break the corresponding strip 20 from the rear end surface of the main body 11; Sequentially assembling the second short terminal strip group, the first long terminal strip group, and the second long terminal strip group according to the assembly method of the first short terminal strip group; 8) Welding foot inspection: Use CCD to inspect the flatness of the welding foot 13; 9) Shell assembly: Assemble the shell 50 onto the rubber core 40; 10) Shell foot detection: Use CCD to detect the flatness of the shell foot 51; 11) Full inspection: conduct all-round inspection on the product; 12) Carrier tape packaging: The qualified products after full inspection are packaged with carrier tape; 13) Carrier tape inspection: Pull out the products packed in the carrier tape again to inspect the product quality; 14) Packing and sealing: Pack and seal the carrier tape.
[0033] Compared with the traditional manufacturing process, the CF card connector manufactured by the above process has lower costs and improved product quality.
[0034] In one embodiment, in step 6), a plastic core jig 60 and a riveting device 70 are used during the assembly process of the terminal 10; The riveting device 70 includes a frame 71, a lower die assembly 72 and an upper die assembly 73 disposed on the frame 71; the upper die assembly 73 is above the lower die assembly 72; The lower mold assembly 72 moves forward and backward under the drive of the first driving member 74; the lower mold assembly 72 includes a base 721, a positioning block 722, a slider 723 and a pressing block 724, the positioning block 722 is arranged at the front end of the upper surface of the base 721, the positioning block 722 is provided with a positioning groove 703 for positioning the rubber core fixture 60, the rear end surface of the positioning block 722 is provided with an avoidance groove 701, and the rear end of the main body 11 of the terminal group extends into the avoidance groove 701; the slider 723 is slidably arranged on the upper surface of the base 721 and is located behind the positioning block 722, optionally, a slide rail is provided on the base 721, and a slide groove is provided on the bottom surface of the slider, and the slide groove is slidably matched with the slide rail; The rear end surface of the slider 723 is provided with a first inclined surface 7231, and a first spring (not shown) is connected between the slider 723 and the positioning block 722, and the first spring is used for elastic reset of the slider 723. The pressing block 724 is provided at the front end of the slider 723, and moves with the slider 723 in the avoidance groove 701; The upper mold assembly 73 moves up and down under the drive of the second driving member 75. The upper mold assembly 73 includes a mounting seat 731 and a driving block 732 disposed at the rear end of the lower surface of the mounting seat 731. The lower end of the driving block 732 is provided with a second inclined surface 7321. Optionally, the first driving member and the second driving member are cylinders.
[0035] When assembling the terminals, first, insert the first short terminal strip set 103 into the corresponding terminal slot of the rubber core 40; Next, the rubber core 40 is installed on the rubber core jig 60, and the rubber core jig 60 is placed in the positioning groove 61; Then, the riveting device 70 is started, the first driving member 74 drives the lower mold assembly 72 to come under the upper mold assembly 73, and the second driving member 75 drives the upper mold assembly 73 to press down. When the second inclined surface 7321 presses down against the first inclined surface 7231, the slider 723 moves toward the positioning block 722, and the pressing block 724 moves with the slider 723 and presses against the contact surface 111 at the rear end of the main body 11, and the corresponding terminal 10 strip 20 group is riveted into the corresponding terminal groove of the rubber core 40; Furthermore, the second driving member 75 drives the upper mold assembly 73 to rise, the slider is reset under the elastic force of the first spring, the first driving member 74 drives the lower mold assembly 72 to move out, and the strip 20 on the first short terminal strip group 103 is manually broken; The second short terminal strip group, the first long terminal strip group, and the second long terminal strip group are assembled in sequence according to the assembly method of the first short terminal strip group.
[0036] The use of the riveting device 70 for riveting terminals improves production efficiency and reduces product defective rate compared to traditional manual riveting; compared to riveting by large-scale automated equipment, the riveting device 70 is small in size and low in cost, and can also complete the riveting actions of large-scale automated equipment.
[0037] In one embodiment, the upper mold assembly 73 also includes a terminal anti-warp block 733 and a rubber core pre-pressing block 734 arranged on the lower surface of the mounting seat 731, and the terminal anti-warp block 733 and the mounting seat 731, the rubber core pre-pressing block 734 and the mounting seat 731 are elastically connected by a second spring (not shown in the figure), the terminal anti-warp block 733 is located at the front end of the driving block 732, and the rubber core pre-pressing block 734 is located at the front end of the terminal anti-warp block 733; since the terminal anti-warp block 733, the rubber core pre-pressing block 734 and the mounting seat 731 are elastically connected by the second spring, the terminal anti-warp block 733 plays a contact limit role on the material strip and does not apply a lot of pressure. The force of the terminal anti-warp block 733 feeding the material strip will not cause deformation of the terminal and the material strip.
[0038] During riveting, the terminal anti-warping block 733 presses against the upper surface of the material strip 20 to prevent the terminal 10 from deforming during riveting, and the rubber core pre-pressing block 734 presses against the upper surface of the rubber core 40 to prevent the rubber core 40 from moving out of position, and the terminal anti-warping block 733 and the rubber core pre-pressing block 734 elastically float and press under the action of their respective second springs.
[0039] In one embodiment, the terminal anti-warping block 733 and the rubber core pre-compression block 734 are both large at the top and small at the bottom. The upper ends of the terminal anti-warping block 733 and the rubber core pre-compression block 734 are both located in the mounting seat 731. A sealing plate 735 is provided on the mounting seat 731. The sealing plate 735 limits the upper ends of the terminal anti-warping block 733 and the rubber core pre-compression block 734 to the mounting seat 731. This mounting structure is simple and flexible.
[0040] In one embodiment, the lower mold assembly 72 further includes a column 725 disposed on the base 721, the upper end of the column 725 passes through the slider, a movable space is reserved between the slider and the column, and a stopper 726 is disposed on the side of the upper end of the column 725, the lower surface of the stopper 726 abuts against the upper surface of the slider 723 to prevent the slider 723 from tilting upward; correspondingly, the mounting seat 731 is provided with an avoidance hole 702 for avoiding the column 725. The diameter of the avoidance hole 702 is larger than the diameter of the column, providing a clearance for the movement of the slide.
[0041] In one embodiment, during step 7) weld foot detection and step 9) shell foot detection, CCD detection is provided with a baseline and a control line. When the weld foot 13 and the shell foot 51 are within the range of the baseline and the control line, they are qualified; when they are beyond the range of the baseline and the control line, they are unqualified. The maximum distance between the baseline and the control line is 0.1 mm.
[0042] In one embodiment, during CCD detection, a positioning detection fixture 90 is used to position the product; the positioning detection fixture 90 includes a base 91, a product positioning groove 901 is opened on the upper surface, and a weld foot platform 911 is provided on the base 91, and the welding surface of the weld foot 13 is attached to the weld foot platform 911, and the weld foot platform 911 is set as a reference line; adjustment components 92 are respectively provided at both ends of the product positioning groove 901, and the adjustment component 92 includes an adjustment block 921, a screw 922 and an adjustment spring 923, and one end of the adjustment block 921 extends into the end of the product positioning groove 901; the screw 922 passes through the adjustment block 921 and is threadedly connected to the side of the base 91; the spring is sleeved on the screw 922, one end of which is against the outer surface of the adjustment block 921, and the other end is against the screw 922. After the connector is placed in the product positioning groove 901, the two ends respectively rest on the corresponding adjustment block 921. The adjustment block 921 moves outward under the pressure of the connector, compressing the spring. At the same time, the spring gives elastic pressure to the adjustment block, so that the adjustment block rests on the end of the connector for positioning. Since the position of the adjustment block changes with the compression deformation of the spring, it is suitable for the installation of connectors of different lengths, and this structure is very convenient for connector installation.
[0043] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A CF card connector terminal strip structure, comprising a terminal and a strip connected to the terminal, characterized in that: The terminal includes a main body, a contact portion extending from the front end of the main body, and a solder foot portion extending and bent on one side of the rear end of the main body, wherein the material strip has a connecting portion, which is connected to the rear end surface of the main body and is arranged at intervals with the solder foot portion.
2. The CF card connector terminal strip structure according to claim 1, characterized in that: The contact portion includes two spring sheets spaced apart from each other, each of the two spring sheets includes a connecting end and an elastic contact end, the connecting end is connected to the main body, the elastic contact end is located at the end of the spring sheet away from the connecting end, and the distance between the two elastic contact ends is smaller than the distance between the two connecting ends.
3. The CF card connector terminal strip structure according to claim 2, characterized in that: The inner surface of the elastic contact end is a contact surface, and the contact surface is electroplated with a gold layer.
4. A method for manufacturing a CF card connector, characterized in that: The following steps are involved: 1) Pre-punch positioning holes on the stamping sheet to form a terminal pre-punched sheet; 2) Spot plating of elastic contact surface: Use the pre-punched positioning holes to accurately position and spot-plate the gold layer on the contact surface of the elastic contact end corresponding to the terminal on the stamped sheet 3) Stamping terminals: Stamp the stamping sheet plated in the previous process to stamp out a long terminal strip group and a short terminal strip group; Each terminal in the long terminal strip group and the short terminal strip group includes a main body, a contact portion extending from the front end of the main body, and a solder leg portion extending and bent at one side of the rear end of the main body, wherein the strip has a connecting portion, the connecting portion is connected to the rear end surface of the main body, and is arranged at intervals with the solder leg portion; 4) Secondary electroplating: The terminals are electroplated for the second time after stamping, with each solder leg electroplated with a tin layer and the stamped end surface electroplated with a nickel layer; 5) Rewinding: Rewind the long terminal strip group and the short terminal strip group onto the reels respectively; 6) Number of PINs for cutting ends: Pull out a section of the long terminal strip group and the short terminal strip group from the corresponding reels and load them into the end cutting machine, and cut the long terminal strip group into a first long terminal strip group of 12PIN and a second long terminal strip group of 13PIN respectively; Cutting the short terminal strip group into a first short terminal strip group of 12 PIN and a second short terminal strip group of 13 PIN respectively; 7) Terminal assembly: Insert the first short terminal strip group into the corresponding terminal slot of the plastic core and perform riveting. After the riveting is completed, break the corresponding strip from the rear end face of the main body; Sequentially assembling the second short terminal strip group, the first long terminal strip group, and the second long terminal strip group according to the assembly method of the first short terminal strip group; 8) Welding foot inspection: Use CCD to inspect the flatness of the welding foot; 9) Shell assembly: Assemble the shell onto the rubber core; 10) Shell foot detection: Use CCD to detect the flatness of the shell foot; 11) Full inspection: conduct all-round inspection on the product; 12) Carrier tape packaging: The qualified products after full inspection are packaged with carrier tape; 13) Carrier tape inspection: Pull out the products packed in the carrier tape again to inspect the product quality; 14) Packing and sealing: Pack and seal the carrier tape.
5. The method for manufacturing a CF card connector according to claim 4, characterized in that: In step 6), the terminal assembly process uses a plastic core jig and a riveting device; The riveting device comprises a frame, a lower die assembly and an upper die assembly arranged on the frame; the upper die assembly is above the lower die assembly; The lower mold assembly moves forward and backward under the drive of the first driving member; the lower mold assembly includes a base, a positioning block, a slider and a pressure block, the positioning block is arranged at the front end of the upper surface of the base, a positioning groove for positioning the rubber core jig is provided on the positioning block, an avoidance groove is provided on the rear end surface of the positioning block, and the rear end of the main body of the terminal group extends into the avoidance groove; the slider is slidably arranged on the upper surface of the base and is located behind the positioning block, a first inclined surface is provided on the rear end surface of the slider, and a first spring is connected between the slider and the positioning block; the pressure block is arranged at the front end of the slider and moves in the avoidance groove with the slider; The upper mold assembly moves up and down under the drive of the second driving member. The upper mold assembly includes a mounting seat and a driving block arranged at the rear end of the lower surface of the mounting seat, and a second inclined surface is arranged at the lower end of the driving block; When assembling the terminals, first, insert the first short terminal strip group into the corresponding terminal slot of the rubber core; Next, install the rubber core onto the rubber core jig, and place the rubber core jig into the positioning groove; Then, the riveting device is started, the first driving member drives the lower die assembly to come under the upper die assembly, and the second driving member drives the upper die assembly to press down. When the second inclined surface presses down against the first inclined surface, the slider moves toward the positioning block, and the pressing block moves with the slider and presses against the contact surface at the rear end of the main body, and the corresponding terminal strip group is riveted into the corresponding terminal groove of the rubber core; Furthermore, the second driving member drives the upper mold assembly to rise, the slider is reset under the elastic force of the first spring, the first driving member drives the lower mold assembly to move out, and the material strip on the first short terminal material strip group is manually broken; The second short terminal strip group, the first long terminal strip group, and the second long terminal strip group are assembled in sequence according to the assembly method of the first short terminal strip group.
6. The method for manufacturing a CF card connector according to claim 5, characterized in that: The upper mold assembly also includes a terminal anti-warping block and a rubber core pre-pressing block arranged on the lower surface of the mounting seat, and the terminal anti-warping block and the mounting seat, the rubber core pre-pressing block and the mounting seat fixture are elastically connected by a second spring, the terminal anti-warping block is located at the front end of the driving block, and the rubber core pre-pressing block is located at the front end of the terminal anti-warping block; During riveting, the terminal anti-warping block presses against the upper surface of the material strip to prevent the terminal from deforming during riveting, and the rubber core pre-pressing block presses against the upper surface of the rubber core to prevent the rubber core from moving. The terminal anti-warping block and the rubber core pre-pressing block elastically float and press under the action of their respective second springs.
7. The method for manufacturing a CF card connector according to claim 6, characterized in that: The terminal anti-warping block and the rubber core pre-compression block are both of a larger upper and smaller lower structure, and the upper ends of the terminal anti-warping block and the rubber core pre-compression block are both located in the mounting seat. A sealing plate is provided on the mounting seat, and the sealing plate limits the upper ends of the terminal anti-warping block and the rubber core pre-compression block to be located in the mounting seat.
8. The method for manufacturing a CF card connector according to claim 6, characterized in that: The lower mold assembly also includes a column arranged on the base, the upper end of the column passes through the slider, and a stop block is provided on the side of the upper end of the column, and the lower surface of the stop block is against the upper surface of the slider to prevent the slider from tilting upward; correspondingly, an avoidance hole for avoiding the column is opened on the mounting seat.
9. The method for manufacturing a CF card connector according to claim 4, characterized in that: During step 7) weld foot detection and step 9) shell foot detection, CCD detection is provided with a baseline and a control line. When the weld foot and shell foot are within the range of the baseline and the control line, they are qualified; when they are beyond the range of the baseline and the control line, they are unqualified. The maximum distance between the baseline and the control line is 0.1mm.
10. The method for manufacturing a CF card connector according to claim 9, characterized in that: During CCD detection, a positioning detection fixture is used to position the product; the positioning detection fixture includes a base with a product positioning groove on the upper surface, a weld foot platform on the base, the welding surface of the weld foot is attached to the weld foot platform, and the weld foot platform is set as a reference line; adjustment components are respectively provided at both ends of the product positioning groove, and the adjustment components include an adjustment block, a screw and an adjustment spring, one end of the adjustment block extends into the end of the product positioning groove; the screw passes through the adjustment block and is threadedly connected to the side of the base; the spring is sleeved on the screw, one end of which is against the outer surface of the adjustment block, and the other end is against the screw.