Wire spring jack and machining method thereof

Abstract

The invention discloses a wire spring jack and a machining method thereof.The wire spring jack comprises a base body, the base body comprises a first supporting ring, a plurality of grid strips, a limiting section and a welding pin which are connected in sequence, the base body is sleeved with an outer sleeve used for driving one end of the first supporting ring and one end of each grid strip to rotate by a preset angle, and when the base body and the outer sleeve are not assembled, the first supporting ring and the grid strips rotate by a preset angle. The multiple grid strips are parallel to one another, and after assembly, each grid strip forms a preset angle relative to the axis of the base body. Because the two ends of the grid strip do not have bending structure points, the turning deflection of the end part of the grid strip is avoided, the radial size is reduced, the current is directly transmitted to the base body from the contact pin, and the contact resistance is reduced.

Description

Technical Field

[0001] The invention relates to a device for transmitting current, in particular to a wire spring jack and a machining method thereof. Background Art

[0002] The jack is the core component of the electrical connector product, which is generally assembled in the socket electrical connector. Currently, the prior art mainly includes two types of jacks, one is a wire spring jack, and the other is a punched wire spring jack.

[0003] Figure 1 The schematic diagram of the assembly of the existing wire spring jack is shown. The existing wire spring jack 1 is composed of a copper wire 11, a front sleeve 12, a rear sleeve 13 and an inner sleeve 14. All parts and the copper wire 11 are gold-plated or silver-plated. A plurality of copper wires 11 are assembled and wound by special tooling or special equipment. The plurality of copper wires 11 are placed in the hole of the inner sleeve 14 and are evenly distributed close to the hole wall of the inner sleeve 14. Then, a sufficient length of one end of the plurality of copper wires 11 is bent and press-fitted between the hole wall of the front sleeve 12 and the outer wall of the inner sleeve 14. The plurality of copper wires 11 are evenly distributed around the circumference. The other ends of the plurality of copper wires 11 are simultaneously rotated about 90 degrees along a certain direction of the circumferential arc relative to each fixed point of the press-fitted end. While maintaining this rotation angle, the other ends of the plurality of copper wires 11 are all bent and press-fitted between the outer wall of the other end of the inner sleeve 14 and the hole wall of the rear sleeve 13. Both ends of the copper wires 11 are bent close to the two end walls of the inner sleeve 14. The front sleeve 14 and the rear sleeve 13 are riveted at four points or rolled for one circle at the joint, and a part of the front sleeve 12 and the rear sleeve 13 are pressed into the annular groove located on the outer circle of the inner sleeve 14 to prevent the front sleeve 12, the rear sleeve 13 and the inner sleeve 14 from falling off and separating.

[0004] The outer diameter of the existing wire spring socket 1 is determined by the pin mating size and the mating gap (the gap between the inner sleeve hole diameter and the pin mating diameter and the diameters of the two copper wires), and the gap is between 0.05 and 0.3 mm; the current conduction path of the wire spring socket contact pair is: the pin mating part, the copper wire 11, and the back sleeve 13.

[0005] Most of the existing wire spring jack 1 products are assembled manually during the assembly process, with poor consistency and low assembly accuracy. The quality of products assembled by different employees varies greatly. This is mainly reflected in the large differences in the turning length of the copper wire 11 (manually cut to a fixed length with scissors). The uniformity of the division of the copper wire 11 is limited by the accuracy differences of the tooling, and the large number of matching dimensions of the machined parts reduces the assurance of the overall matching accuracy of the product. The tooling damages the plating of parts, and the different sizes and tolerances of different tooling lead to differences in the wiring position and bending position of the copper wire 11, as well as differences in the relative rotation angles of the fixed positions at both ends of the copper wire 11. There is always a large defective ratio, and the quality of the product can only be guaranteed by manual full picking.

[0006] Figure 2The schematic diagram of the assembly of the punched wire spring jack 2 is shown; it includes a punched spring sheet 21 (punch spring), an inner sleeve 14, a front sleeve 12 and a rear sleeve 13, and all parts are gold-plated or silver-plated. The assembly method is:

[0007] The copper strip is punched into a grid shape, with a total of three grid areas. A complete copper strip, i.e., a supporting copper strip, is retained between the grid areas. The width of the middle part (including two supporting copper strips) is the same as the length of the inner sleeve, and its grid strips are like the copper wires of the wire spring jack. The punched spring piece 21 is cut into a fixed length according to the inner sleeve hole diameter and then wrapped in a circle. The wrapped punched spring piece 21 is placed in the inner sleeve hole. The outer sides of the two supporting copper strips are roughly flush with the two mouth walls of the inner sleeve. The grid strips (copper strips) of one side of the grid area are bent and pressed against the mouth wall of the inner sleeve 14 between the hole wall of the front sleeve 12 and the outer wall of the inner sleeve 13. The other end of the wrapped punched spring piece 21 is rotated about 90 degrees along a certain direction of the circular arc relative to each fixed point of the pressed end by a special tool. While maintaining this rotation angle, all the grid strips (copper strips) at the other end of the punched spring piece 21 are bent and pressed against the other end wall of the inner sleeve 14 between the outer wall of the other end of the inner sleeve 14 and the hole wall of the back sleeve 13. The front sleeve 12 and the rear sleeve 13 are riveted at four points or rolled for one circle at the joint, and a part of the front sleeve 12 and the rear sleeve 13 are turned over and pressed into the annular groove located on the outer circle of the inner sleeve 14 to prevent the front sleeve 12, the rear sleeve 13 and the inner sleeve 14 from falling off and separating.

[0008] Support copper tape relative Figure 1 The existing wire spring socket 1 structure brings two advantages: one is to remove the mating gap, and the other is to reduce the contact force on the insertion and extraction; because the supporting copper strip supports and retains the grid strip, most of the copper strip disturbance when the copper strip is bent increases the insertion and extraction force, so that the plug-in size of the pin can be relatively designed to be larger, or conversely, without setting the mating gap and reducing the outer diameter of the punched wire spring socket when the plug-in size remains unchanged. That is, when the pin is inserted into the punched wire spring socket 2, most of the extrusion force of the turning disturbance of the bending points at both ends of the punched spring sheet 21 on the plug-in cylindrical surface is borne by the supporting copper strip, which significantly reduces the influence of the extrusion force on the insertion and extraction force. There will still be a certain disturbance at the copper strip wrapping seam of this technology that squeezes the outer cylindrical surface of the plug-in part.

[0009] This structure is generally used for pins to be mated with larger sockets with a diameter of about 5 to 10, and its current conduction path is: the pin mating part, the punched spring 21, and the back cover 13.

[0010] Half of the manufacturing process of the punched wire spring jack 2 is completed by manual assembly, which has the following defects to a certain extent: poor consistency, low assembly accuracy, different quality of products assembled by different employees, more machined parts with different sizes, which reduces the guarantee of overall matching accuracy, and tooling damages the coating; different sizes and tolerances of different tooling lead to differences in the wiring position and bending position of the copper wire, as well as differences in the relative rotation angles of the fixed positions at both ends of the punched spring 21. There is always a certain amount of defective ratio, and manual full picking is required to ensure product quality. Summary of the invention

[0011] In view of the above-mentioned deficiencies in the prior art, the wire spring jack and the machining method thereof provided by the present invention solve the problem of poor bending consistency of the copper wire and the copper strip of the prior wire spring jack.

[0012] In a first aspect, a wire spring socket is provided, which includes a base body, the base body includes a first support ring, a plurality of mesh bars, a limit segment and a welding pin connected in sequence, a sleeve is provided outside the base body for rotating the first support ring and one end of the mesh bar to a preset angle, when the base body and the sleeve are not assembled, the plurality of mesh bars are parallel to each other, after assembly, each mesh bar is at a preset angle relative to the axis of the base body.

[0013] Furthermore, the first support ring is provided with a plurality of first slots in the circumferential direction, and one end of the outer sleeve is provided with a plurality of first clips cooperating with the first slots. The first slots and the first clips cooperate to limit the rotation of the first support ring relative to the outer sleeve.

[0014] Furthermore, the wire spring socket also includes a second support ring connected between multiple grid bars and the limit section; the other end of the sleeve is provided with multiple second clamping strips corresponding to the first clamping strip, and the second support ring is provided with a second clamping groove corresponding to the first clamping groove, and the second clamping groove and the second clamping strip cooperate with each other to limit the rotation of the sleeve.

[0015] Furthermore, the length of the first clamping strip is equal to the length of the first clamping slot, a first annular groove having a depth less than that of the second clamping slot is provided on the second support ring, and an annular inner platform cooperating with the first annular groove is provided on the inner side of the second clamping strip; the first clamping slot cooperates with the first clamping strip and the first annular groove cooperates with the annular inner platform to limit the first support ring and the second support ring from approaching each other when the pin is mated.

[0016] Furthermore, when the base and the outer sleeve are not assembled, the first slot, the grid bar and the second slot are located on the same straight line.

[0017] Furthermore, the preset angle is 90°.

[0018] Furthermore, the mating hole of the first supporting ring is provided with a guide cone hole at the inlet side for facilitating the mating of the socket.

[0019] Furthermore, a second annular groove cooperating with the base of the mounting socket is formed on the limiting section, and one end of the limiting section away from the second support ring is configured as a truncated cone, and the small end of the truncated cone is away from the second support ring.

[0020] Furthermore, the inner and outer surfaces of the substrate are plated with gold or silver; the inner and outer surfaces of the outer sheath are plated with an electroplating layer made of a material other than gold or silver.

[0021] In a second aspect, a method for machining a wire spring socket is provided, comprising the steps of:

[0022] Select a cylindrical base blank and a jacket blank, and machine a mating hole of a preset length inside the base blank, and machine a through hole penetrating the jacket blank inside;

[0023] Removing multiple strips of blanks at both ends of the outer jacket blank to form a first clamping strip and a second clamping strip, respectively, to complete the outer jacket processing, wherein the first clamping strip and the second clamping strip are located on the same straight line;

[0024] A first annular groove, a second annular groove, a first support ring, a second support ring, a welding pin and a frustum are machined on the outer surface of the base blank;

[0025] Removing multiple strips of blanks in the middle axial direction of the base blank, processing multiple grid strips parallel to each other, and completing the processing of the base, wherein the grid strips and the first and second slots are located on the same straight line;

[0026] Electroplating the processed substrate and the outer jacket to form a gold layer or a silver layer on the inner and outer surfaces of the substrate, and to form a non-gold or non-silver electroplated layer on the inner and outer surfaces of the outer jacket;

[0027] Insert the first card strip into the first card slot, push the outer sleeve so that the annular inner platform is elastically inserted into the first annular slot, and the second card strip enters the second card slot;

[0028] Push open the second card strip and make it step onto the step next to the second card slot, then rotate the outer sleeve until the rotation angle is equal to the preset angle to complete the jack assembly; after rotating the preset angle, the second card strip is located in the second card slot.

[0029] Compared with the two types of wire spring jacks in the prior art, the beneficial effects of the present invention are:

[0030] The present invention provides a sleeve which can drive one end of the plurality of mesh bars to rotate at a certain angle, so that the diameter of the mesh bars except for the two ends can be reduced. During mating, the mesh bars rely on the elasticity of the material itself to exert an extrusion force on the outer cylindrical surface of the mating pin to ensure the stability of the insertion of the pin.

[0031] The multiple mesh bars of the present invention do not need to be provided with inner sleeves inside so that the two ends of the mesh bars can be folded to the outer surface of the inner sleeve for fixation. There is no extrusion pressure on the cylindrical surface of the pin mating caused by the turning disturbance of the copper wires at both ends of the wire spring socket and the copper bars at both ends of the punched wire spring socket. The influence of the extrusion pressure on the cylindrical surface of the pin mating caused by the turning disturbance of the copper wires or copper bars at both ends in the two existing technical structures on the plugging and unplugging force of the electrical connector is completely eliminated. Under the premise of ensuring and improving the contact performance, the plugging and unplugging force of the electrical connector is further reduced, which provides broader possibilities for the design of electrical connectors with a large number of cores and improves the plugging and unplugging experience of the electrical connector.

[0032] Since there are no bending structural points at both ends of the grid bars in this solution, there is no thickness of the copper strip bending structural points in the radial direction of the wire spring socket, which only includes the socket diameter and the wall thickness of the four parts, thereby greatly reducing the outer diameter of the wire spring socket.

[0033] When the wire spring jack of this scheme transmits current, the current is directly transmitted to the base through the pin. Compared with the wire spring plug and the punched wire spring jack, the transfer link through the copper wire and copper belt is reduced, thereby reducing the contact resistance of the contact pair. The contact area between the pin and the jack is increased by the precise size direct match between the base hole and the outer diameter of the pin, further reducing the contact resistance.

[0034] This solution directly forms multiple grid bars on the substrate, eliminating the need to use imported beryllium bronze wires. The product material problem can be solved by using domestic tin-phosphorus bronze substrate materials, providing a possibility for domestic substitution.

[0035] This solution is suitable for both extremely small and extremely large pin mating diameters: in extremely small pin mating diameters, the number of material layers constituting the wire spring socket is reduced, thereby reducing the outer diameter of the wire spring socket. In extremely large pin mating diameters, the material thickness of the mesh bar can be directly increased, thereby increasing the mesh bar's resilience when the pin is inserted, improving the insertion and extraction force, and improving the current conduction capacity of the contact pair.

[0036] Since this solution does not require the bending structure at both ends of the mesh bar / copper wire, the base can be directly machined and formed in a uniform manner, and the consistency is relatively good. When the outer sleeve and the base are assembled, the consistency of the rotation angle can be ensured through the cooperation of the second card bar and the second card slot, which significantly reduces the assembly cost and difficulty, and general assembly workers can complete the assembly.

[0037] The electroplating cost is significantly reduced. In this solution, only the substrate needs to be plated with gold or silver. Compared with the wire spring socket and the punched wire spring socket of the same mating size specification, the wire spring socket significantly reduces the gold and silver plating area.

[0038] The wire spring jack product is simply assembled from machined parts. The component size tolerance is guaranteed by the equipment, with good consistency and high accuracy of simple assembly. There is no difference in the quality of products assembled by different employees. There is no need for special assembly tooling or equipment, and there is no risk of tooling or equipment damaging the plating. There are no differences in the wiring position and bending position of the copper wire due to the different sizes and tolerances of different tooling. The defective product ratio is significantly reduced, and there is no need to manually pick all the products to ensure their quality, only random inspection is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the assembly of the wire spring jack in the prior art.

[0040] Figure 2 The figure is a schematic diagram of assembling a punched wire spring socket in the prior art.

[0041] Figure 3 This is a three-dimensional image of multiple mesh bars in the base of the wire spring socket of this solution after being rotated by a preset angle.

[0042] Figure 4 A three-dimensional diagram of the outer cover of the wire spring jack of the present invention.

[0043] Figure 5 It is a three-dimensional diagram of the wire spring jack of this scheme.

[0044] Figure 6 This is a cross-sectional view of the electric connector formed after the wire spring socket of this solution is assembled into the base and welded with the printed circuit board.

[0045] Among them, 1. existing wire spring jack; 11. copper wire; 12. front sleeve; 13. rear sleeve; 14. inner sleeve; 2. punched wire spring jack; 21. punched reed;

[0046] 3. Wire spring jack; 31. Base; 311. First support ring; 3111. First clamping groove; 3112. Guide cone hole; 312. Grid bar; 313. Second support ring; 3131. Second clamping groove; 3132. First annular groove; 314. Limiting section; 3141. Second annular groove; 315. Solder pin; 32. Jacket; 321. First clamping strip; 322. Second clamping strip; 3221. Annular inner platform;

[0047] 4. Base; 41. Annular boss; 5. Printed circuit board. DETAILED DESCRIPTION

[0048] The specific implementation modes of the present invention are described below to facilitate those skilled in the art to understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0049] like Figure 3-Figure 5 As shown, the wire spring socket 3 provided in the present solution includes a base 31, and the base 31 includes a first support ring 311, a plurality of mesh bars 312, a limit section 314 and a welding pin 315 which are sequentially connected as a whole. The base 31 is sheathed with a jacket 32 ​​for rotating the first support ring 311 and one end of the mesh bar 312 to a preset angle. When the base 31 and the jacket 32 ​​are not assembled, the plurality of mesh bars 312 are parallel to each other. After assembly, each mesh bar 312 is at a preset angle relative to the axis of the base 31.

[0050] When assembling the base 31 and the outer sleeve 32, the base 31 is inserted into the outer sleeve 32, and one end of the base 31 is fixed to the outer sleeve 32, and the other end can be rotated relative to the base 31. In this way, when the outer sleeve 32 is rotated, one end of the plurality of mesh bars 312 can follow the rotation, so that the plurality of mesh bars 312 can be spirally shaped and their inner diameters can be changed. In this way, when the pin is matched with the socket, a clamping force can be applied to the pin to ensure the stability of the socket connection.

[0051] During implementation, this scheme preferably has a plurality of first slots 3111 arranged circumferentially on the first support ring 311, and one end of the outer sleeve 32 has a plurality of first clip strips 321 cooperating with the first slots 3111. The first slots 3111 and the first clip strips 321 cooperate to limit the rotation of the first support ring 311 relative to the outer sleeve 32.

[0052] After the first slot 3111 and the first clip 321 are set in the present solution, the outer sleeve 32 is sleeved on the outside of the base 31. Since the first clip 321 is located in the first slot 3111, when the outer sleeve 32 is rotated, the movement of the first clip 321 can be limited due to the obstruction of the protrusion next to the first slot 3111. Therefore, when the outer sleeve 32 rotates, it can rotate with the first support ring 311 (that is, the first support ring 311 is limited to rotate relative to the outer sleeve 32) to ensure that the outer sleeve 32 can rotate with the grid strip 312 to a preset angle.

[0053] The first slot 3111 and the first clip 321 are only a preferred embodiment of the present solution. To ensure that the first support ring 311 rotates with the outer sleeve 32 and the second support ring 313 does not rotate, the first support ring 311 and the outer sleeve 32 may be interference fit, and the other end of the grid strip 312 may be clearance fit or sliding fit with the outer sleeve 32.

[0054] In one embodiment of the present invention, the wire spring socket 3 also includes a second support ring 313 connected between the multiple grid bars 312 and the limiting section 314; specifically, the first support ring 311, the multiple grid bars 312, the second support ring 313, the limiting section 314 and the welding needle 315 are an integrated connection structure, which can be processed from a columnar blank.

[0055] The other end of the outer sleeve 32 is provided with a plurality of second clamping strips 322 corresponding to the first clamping strip 321 , and the second support ring 313 is provided with a second clamping groove 3131 corresponding to the first clamping groove 3111 . The second clamping groove 3131 and the second clamping strip 322 cooperate with each other to limit the rotation of the outer sleeve 32 .

[0056] Since the second slot 3131 limits the second clamping strip 322, when the outer sleeve 32 and the base body 31 are assembled, it is necessary to forcefully push the second clamping strip open so that it can step onto the protrusion next to the second slot 3131, and then rotate the outer sleeve 32 so that the outer sleeve 32 at this end can rotate relative to the second support ring 313 to adjust the inscribed circle diameter of the multiple grid bars 312; when the outer sleeve 32 loses external rotational force, the second clamping strip 322 entering the second slot 3131 is limited on the second support ring 313 to ensure that the outer sleeve 32 and the base body 31 are stably fixed.

[0057] like Figure 5 As shown, the length of the first clamping strip 321 is equal to the length of the first clamping groove 3111, the second support ring 313 is provided with a first annular groove 3132 whose depth is less than that of the second clamping groove 3131, and the inner side of the second clamping strip 322 is provided with an annular inner platform 3221 which cooperates with the first annular groove 3132; the first clamping groove 3111 cooperates with the first clamping strip 321 and the first annular groove 3132 cooperates with the annular inner platform 3221 to limit the first support ring 311 and the second support ring 313 from approaching each other when the pin is plugged in.

[0058] When the pin is mated with the socket, the pin will stretch out the mesh strip 312. The mesh strip 312 forms an extrusion pressure on the outer cylindrical surface of the pin by relying on the elasticity of the material itself. At the same time, the outwardly expanded mesh strip 312 will drive the first support ring 311 and the second support ring 313 of the base 31 to move inward. The bottom of the first slot 3111 and the annular inner platform 3221 of the present scheme can limit the first support ring 311 and the second support ring 313, so that the first support ring 311 and the second support ring 313 cannot move inward, and can only rely on the elasticity of the material itself to stretch the mesh strip 312, thereby further ensuring the mating and plugging force.

[0059] During implementation, the present solution preferably has the first slot 3111, the mesh bar 312 and the second slot 3131 located on the same straight line when the base 31 and the outer sleeve 32 are not assembled. With this arrangement, when the outer sleeve 32 is inserted, the mesh bar 312 can act as a slide, and the second slot 322 can slide along the mesh bar 312 to quickly and accurately enter the second slot 3131.

[0060] The preferred preset angle of this solution is 90°. The setting of this angle can ensure that the inscribed circle formed by all the grid bars 312 has sufficient insertion and extraction force when the pin is inserted.

[0061] like Figure 3 As shown, the mating hole of the first support ring 311 is provided with a guide cone hole 3112 at the entrance side for easy mating of the socket. The guide cone hole 3112 can realize the guiding function when the pin is mated, preventing individual offset pins from being unable to be inserted into the wire spring socket 3 during multi-hole insertion and extraction. The support ring structure fully ensures the roundness of the socket entrance, and cooperates with the semi-circular head of the pin head to further ensure the smooth completion of the electrical connector mating process.

[0062] Figure 6 The schematic diagram shows a socket formed by installing multiple wire spring sockets 3 in a base 4 and welding them together with a printed circuit board 5. In order to prevent the socket from exiting the base 4 along with the pin when the plug is pulled out of the socket, a circle of annular bosses 41 are provided in the socket mounting hole of the base 4.

[0063] In order to ensure the stability of the spring socket 3 installed on the base 4, the present invention optimizes the structure of the base 31 accordingly, specifically: Figure 3 and Figure 6 As shown, in this solution, a second annular groove 3141 is opened on the limiting section 314 to cooperate with the base 4 of the mounting socket, and the end of the limiting section 314 away from the second support ring 313 is configured as a frustum, and the small end of the frustum is away from the second support ring 313.

[0064] After the wire spring socket 3 is inserted into the base 4, the diameter of the frustum of the cone changes from small to large, which can ensure that the socket can smoothly pass through the annular boss 41 on the base 4 whose diameter is smaller than its maximum diameter under extrusion. The cooperation between the second annular groove 3141 and the annular boss 41 on the base 4 can block the frustum of the cone to prevent the socket from detaching from the base 4 when the pin is pulled out.

[0065] In implementation, the present solution preferably has the inner and outer surfaces of the base 31 plated with gold or silver, and the inner and outer surfaces of the outer jacket 32 ​​are plated with a non-gold or non-silver electroplated layer. This arrangement ensures stable current transmission while significantly reducing material costs.

[0066] The present solution also provides a machining method for the wire spring socket 3, which comprises the steps of:

[0067] Select a cylindrical base 31 blank and a cylindrical outer shell 32 blank, and machine a mating hole of a preset length inside the base 31 blank, and machine a through hole penetrating the outer shell 32 blank;

[0068] A plurality of strips of blanks at both ends of the blank of the outer jacket 32 ​​are removed to form a first clamping strip 321 and a second clamping strip 322 respectively, thereby completing the processing of the outer jacket 32, wherein the first clamping strip 321 and the second clamping strip 322 are located on the same straight line;

[0069] A first annular groove 3132, a second annular groove 3141, a first support ring 311, a second support ring 313, a welding pin 315 and a truncated cone are processed on the outer surface of the base 31 blank;

[0070] A plurality of strip-shaped blanks in the middle axial part of the blank of the base 31 are removed, and a plurality of grid bars 312 parallel to each other are processed to complete the processing of the base 31, wherein the grid bars 312 and the first slot 3111 and the second slot 3131 are located on the same straight line;

[0071] Electroplating the processed substrate 31 and the outer jacket 32 ​​to form a gold layer or a silver layer on the inner and outer surfaces of the substrate 31 and a non-gold or non-silver electroplating layer on the inner and outer surfaces of the outer jacket 32;

[0072] Insert the first clamping strip 321 into the first clamping groove 3111, push the outer sleeve 32 so that the annular inner platform 3221 is elastically clamped into the first annular groove 3132, and the second clamping strip 322 enters the second clamping groove 3131;

[0073] Push the second clamping strip 322 to make it step onto the step beside the second clamping slot 3131 , then rotate the outer sleeve 32 until the rotation angle is equal to the preset angle, and the jack assembly is completed; after rotating the preset angle, the second clamping strip is located in the second clamping slot 3131 .

[0074] When the outer sleeve 32 is rotated, when the second clamping strip 322 moves to the second clamping slot 3131, the second clamping strip 322 will be elastically retracted and confined in the second clamping slot 3131. If the rotation angle does not reach the preset angle at this time, the second clamping strip 322 can be opened again to make the second clamping strip 322 step onto the step next to the second clamping slot 3131, and then the outer sleeve 32 is rotated, and this cycle is repeated until the rotation angle is equal to the preset angle.

[0075] The following is a description of how the outer diameter of the wire spring jack 3 of the present application can be greatly reduced by combining two wire spring jack structures of the prior art:

[0076] The first wire spring jack in the prior art ( Figure 1The outer diameter of the structure shown) is composed of the pin mating size, the mating gap (referring to the gap after deducting the pin mating diameter and the two copper wire diameters from the inner sleeve aperture, the gap is between 0.05 and 0.3 mm, for example, the existing wire spring socket 1 of 0.6 (pin mating diameter), the gap is about 0.05 mm, the existing wire spring socket 1 of 1.5, the gap is about 0.1 mm), 4 copper wire diameters and 4 part wall thicknesses (generally taking the copper wire diameter value), for example, 6.0 socket, copper wire diameter is 0.5 mm, part wall thickness is 0.5 mm, mating gap is 0.2 mm, existing wire spring socket 1 outer diameter = 6.0 + 0.2 + 4 * 0.5 + 4 * 0.5 = 10.2 mm, outer diameter difference (existing wire spring socket 1 outer diameter minus pin mating diameter value) = 10.2-6 = 4.2 mm.

[0077] The second punching wire spring jack 2 in the prior art ( Figure 2 The outer diameter of the structure shown is composed of the pin mating size, 4 copper strip thicknesses and 4 part wall thicknesses (generally the copper strip thickness value). For example, for a 6.0 socket, the copper strip thickness is 0.5 mm, the part wall thickness is 0.5 mm, and the outer diameter of the punched wire spring socket 2 = 6.0 + 4*0.5 + 4*0.5 = 10 mm. The outer diameter difference (the outer diameter of the punched wire spring socket 2 minus the pin mating diameter value) = 10-6 = 4 mm.

[0078] The outer diameter of the wire spring socket 3 of the present invention is composed of the pin mating size and the wall thickness of the four parts. For example, for a 6.0 socket, the part wall thickness is 0.5 mm, the outer diameter of the wire spring socket 3 = 6.0 + 4*0.5 = 8 mm, and the outer diameter difference (the outer diameter of the wire spring socket 3 minus the pin mating diameter value) = 8-6 = 2 mm.

[0079] By comparing the three types of wire spring jacks, it can be seen that when plugging in pins of the same diameter, the outer diameter of the wire spring jack 3 provided by the present solution can be greatly reduced.

[0080] For the 0.4 socket, the wall thickness of the part is 0.1 mm. The outer diameter of the wire spring socket 3 of this solution = 0.4 + 4 * 0.1 = 0.8 mm, and the outer diameter difference (the outer diameter of the wire spring socket 3 minus the pin matching diameter value) = 0.8-0.4 = 0.4 mm.

[0081] Figure 1 The existing wire spring socket 1 corresponds to the outer diameter of the 0.4 specification wire spring socket 1: 0.4+0.05 (mating clearance) + 4*0.1+4*0.1=1.25, while under the limit state, the outer diameter of the 0.4 specification wire spring socket 1 is: 0.4+0.05 (mating clearance) + 4*0.07+4*0.07=1.01 mm, and the outer diameter difference is: 1.01-0.4=0.61 mm. However, in this case, it is extremely difficult to process the front sleeve 12, the rear sleeve 13 and the inner sleeve 14 with a wall thickness of 0.07 mm. Figure 2The conventional punched wire spring socket 2 shown is generally not suitable for manufacturing products with small mating diameter specifications.

[0082] By comparison, it can be seen that the wire spring socket 3 of the present solution can be adapted to both extremely small pin mating diameters and extremely large pin mating diameters.

[0083] In summary, the wire spring jack 3 provided by the present solution has the advantages of greatly reduced inner diameter, low contact resistance, complete elimination of existing turning disturbance, and simple assembly.

Claims

1. A wire spring jack, characterized in that: The invention comprises a substrate, which comprises a first support ring, a plurality of mesh bars, a limit section and a welding pin connected in sequence. The substrate is provided with a jacket for rotating the first support ring and one end of the mesh bar at a preset angle. When the substrate and the jacket are not assembled, the plurality of mesh bars are parallel to each other. After assembly, each mesh bar is at a preset angle relative to the axis of the substrate.

2. The wire spring jack according to claim 1, characterized in that: The first support ring is provided with a plurality of first slots in the circumferential direction, and one end of the outer sleeve is provided with a plurality of first clips cooperating with the first slots. The first slots and the first clips cooperate to limit the first support ring from rotating relative to the outer sleeve.

3. The wire spring jack according to claim 2, characterized in that: It also includes a second support ring connected between multiple grid bars and the limiting section; multiple second clamping strips are arranged at the other end of the outer sleeve corresponding to the first clamping strip, and the second support ring is provided with a second clamping groove corresponding to the first clamping groove, and the second clamping groove and the second clamping strip cooperate with each other to limit the rotation of the outer sleeve.

4. The wire spring jack according to claim 3, characterized in that: The length of the first clamping strip is equal to the length of the first clamping slot, the second support ring is provided with a first annular groove whose depth is less than that of the second clamping slot, and the inner side of the second clamping strip is provided with an annular inner platform which cooperates with the first annular groove; the first clamping slot cooperates with the first clamping strip and the first annular groove cooperates with the annular inner platform to limit the first support ring and the second support ring from approaching each other when the pin is mated.

5. The wire spring jack according to claim 3, characterized in that: When the base body and the outer sleeve are not assembled, the first slot, the grid bar and the second slot are located on the same straight line.

6. The wire spring jack according to claim 1, characterized in that: The preset angle is 90°.

7. The wire spring jack according to claim 1, characterized in that: The mating hole of the first supporting ring is provided with a guide cone hole at the inlet side for facilitating the mating of the socket.

8. The wire spring jack according to any one of claims 1 to 7, characterized in that: The limiting section is provided with a second annular groove matched with the base of the mounting socket, and the end of the limiting section away from the second support ring is configured as a truncated cone, and the small end of the truncated cone is away from the second support ring.

9. The wire spring jack according to any one of claims 1 to 7, characterized in that: The inner and outer surfaces of the substrate are plated with gold or silver; the inner and outer surfaces of the outer shell are plated with electroplated layers made of materials other than gold or silver.

10. A machining method for a wire spring socket according to any one of claims 1 to 9, characterized in that: Includes steps: Select a cylindrical base blank and a jacket blank, and machine a mating hole of a preset length inside the base blank, and machine a through hole penetrating the jacket blank inside; Removing multiple strips of blanks at both ends of the outer jacket blank to form a first clamping strip and a second clamping strip, respectively, to complete the outer jacket processing, wherein the first clamping strip and the second clamping strip are located on the same straight line; A first annular groove, a second annular groove, a first support ring, a second support ring, a welding pin and a frustum are machined on the outer surface of the base blank; Removing multiple strips of blanks in the middle axial direction of the base blank, processing multiple grid strips parallel to each other, and completing the processing of the base, wherein the grid strips and the first and second slots are located on the same straight line; Electroplating the processed substrate and the outer jacket to form a gold layer or a silver layer on the inner and outer surfaces of the substrate, and to form a non-gold or non-silver electroplated layer on the inner and outer surfaces of the outer jacket; Insert the first card strip into the first card slot, push the outer sleeve so that the annular inner platform is elastically inserted into the first annular slot, and the second card strip enters the second card slot; Push open the second card strip and make it step onto the step next to the second card slot, then rotate the outer sleeve until the rotation angle is equal to the preset angle to complete the jack assembly; after rotating the preset angle, the second card strip is located in the second card slot.

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