A connector with stable signal

Abstract

The present invention relates to the field of connector technology, and in particular to a signal-stable connector, comprising a plastic seat, a metal outer cylinder inserted into the plastic seat, an insulating seat arranged in the metal outer cylinder, and a metal terminal assembled in the insulating seat. The claw spring of the metal terminal is separately arranged from the metal sleeve, and the claw spring is assembled in the metal sleeve. The claw spring and the metal sleeve are interference-fitted to form hard interference. The hard interference generates a greater positive force between the metal sleeve and the claw spring, thereby fixing the claw spring and increasing the stress of the spring clip on the external connection terminal through the positive force generated by the hard interference, thereby increasing the connection stability to the external connection terminal, and further improving the electrical contact stability between the spring clip and the external connection terminal. Therefore, when manufacturing the metal sleeve and the spring clip, it is possible to avoid using precious metal plating to improve the electrical connection performance, which helps to reduce manufacturing costs.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a connector with stable signals. Background Art

[0002] The metal terminals used in current Fakra connectors are generally of an integrated structure, that is, the spring contacting the external connection terminal and the metal end fixed to the insulating seat of the connector are integrated. Figure 1 As shown, when connected to an external connector, the male pin of the external connector is inserted between a number of spring sheets, and the male pin is fixed by the stress generated by the several spring sheets on the male pin; however, the spring sheets of this type of connector are generally small and thin, so their own elastic force is not large, and the stress they can generate on the male pin is also relatively weak, so it is easy for the male pin connection to be not stable enough, resulting in unstable electrical contact performance between the two connectors, affecting the stability of data transmission between the two connectors. Summary of the Invention

[0003] In response to the problems of the prior art, the present invention provides a connector with stable signals. The claw spring and the metal sleeve are separately arranged and assembled in the metal sleeve. The claw spring and the metal sleeve have an interference fit. The metal sleeve and the claw spring generate greater stress through hard interference, thereby fixing the claw spring and increasing the stress of the spring clip on the external connection terminal through the stress generated by the hard interference, thereby increasing the connection stability of the external connection terminal and improving the reliability of the electrical contact between the two connectors.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: a connector with stable signals, comprising a plastic seat, a metal outer cylinder inserted in the plastic seat, an insulating seat arranged in the metal outer cylinder, and a metal terminal assembled in the insulating seat, the metal outer cylinder, the insulating seat and the metal terminal are coaxially arranged, the plastic seat is provided with a docking hole, the front ends of the metal outer cylinder, the insulating seat and the metal terminal are all exposed in the docking hole, the metal terminal comprises a metal sleeve and a claw spring, the claw spring is used to clamp the external connection terminal, the metal sleeve is provided with a cavity, the claw spring is assembled in the cavity; the claw spring comprises a supporting part and a clamping part connected to the supporting part, and the outer periphery of the supporting part is interference fit with the metal sleeve.

[0005] Preferably, the supporting portion is assembled at the cavity opening of the cavity, and the clamping portion is located between the cavity opening and the cavity bottom of the cavity.

[0006] Preferably, the clamping opening of the clamping portion is located at the cavity opening of the cavity, and the supporting portion is located between the cavity opening and the cavity bottom of the cavity.

[0007] Preferably, the clamping portion includes a plurality of spaced-apart spring sheets, one end of each spring sheet is fixed to the supporting portion, and a clamping opening is formed between the other ends of the plurality of spring sheets, and the clamping opening is used for assembling the external connection terminal.

[0008] Preferably, the cross-sectional area of ​​the end of the spring sheet connected to the support portion is larger than the cross-sectional area of ​​the end of the spring sheet located at the clamping opening.

[0009] Preferably, the insulating seat includes an upper insulating part and a lower insulating part connected to the upper insulating part, the lower insulating part is detachably mounted on the plastic seat, the upper insulating part is assembled in the metal outer tube and an insertion gap is provided between the upper insulating part and the metal outer tube, and the insertion gap is used to accommodate external connection terminals.

[0010] Preferably, the outer walls of the upper insulating portion and the lower insulating portion are both provided with a plurality of axial convex strips, the plurality of axial convex strips are arranged at intervals, and the axial convex strips are arranged along the axial direction of the upper insulating portion and the lower insulating portion.

[0011] Preferably, the outer walls of the upper insulating portion and the lower insulating portion are both provided with a plurality of transverse ridges, the plurality of transverse ridges are arranged at intervals, and the transverse ridges are coaxially arranged with the upper insulating portion and the lower insulating portion.

[0012] Preferably, the inner wall of the insulating seat is provided with a plurality of inner convex strips, the plurality of inner convex strips are arranged at intervals, and the inner convex strips are arranged along the axial direction of the insulating seat.

[0013] Preferably, the metal outer cylinder is provided with a plurality of metal sheets, the plurality of metal sheets are arranged at intervals, the metal sheets are exposed from the docking holes of the plastic seat, and the length of the middle portion of the metal sheet is shorter than the length of the two ends of the metal sheet.

[0014] Beneficial effects of the present invention:

[0015] The present invention provides a connector with stable signals, in which the claw spring of the metal terminal is separately arranged from the metal sleeve, and the claw spring is assembled in the metal sleeve. The claw spring and the metal sleeve are interference fit to form hard interference. The hard interference generates a larger positive force between the metal sleeve and the claw spring, which can not only fix the claw spring, but also increase the stress of the spring clip on the external connection terminal through the positive force generated by the hard interference, thereby increasing the connection stability to the external connection terminal, and further improving the electrical contact stability between the spring clip and the external connection terminal. Therefore, when manufacturing the metal sleeve and the spring clip, it is possible to avoid using precious metal plating to improve the electrical connection performance, which helps to reduce the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of a metal terminal in the prior art;

[0017] Figure 2 It is a structural schematic diagram of the present invention;

[0018] Figure 3 It is a schematic diagram of the decomposition structure of the present invention;

[0019] Figure 4 is a cross-sectional view of the present invention;

[0020] Figure 5 is a schematic structural diagram of the metal terminal of the present invention;

[0021] Figure 6 The structure of the claw spring of the present invention is schematically shown Figure 1 ;

[0022] Figure 7 The structure of the claw spring of the present invention is schematically shown Figure 1 ;

[0023] Figure 8 Schematic diagram of the matching structure of the claw spring and the metal sleeve of the present invention;

[0024] Figure 9 is a cross-sectional view of the metal sleeve of the present invention;

[0025] Figure 10 is a cross-sectional view of a metal sleeve and a claw spring according to a first embodiment of the present invention;

[0026] Figure 11 is a cross-sectional view of a metal sleeve and a claw spring according to a fifth embodiment of the present invention;

[0027] Figure 12 It is a structural schematic diagram of the metal outer cylinder of the present invention;

[0028] Figure 13 is a cross-sectional view of the plastic seat of the present invention;

[0029] Figure 14 Schematic diagram of the structure of the insulating seat of the second embodiment and the sixth embodiment of the present invention;

[0030] Figure 15 Schematic diagram of the structure of the insulating seat of the third embodiment and the seventh embodiment of the present invention;

[0031] Figure 16 Schematic diagram of the structure of the insulating seat of the fourth embodiment and the eighth embodiment of the present invention;

[0032] Figure 17 for Figure 16 Cross-sectional view of .

[0033] exist Figures 1 to 17 Reference numerals in the figures include:

[0034] 1-metal sleeve, 2-claw spring, 3-cavity, 4-support part, 6-spring, 7-clamp, 8-assembly cavity, 9-bottom cavity, 10-rib, 11-boss, 12-plastic seat, 13-metal outer cylinder, 14-insulating seat, 15-docking hole, 16-upper insulating part, 17-lower insulating part, 18-axial convex strip, 19-lateral convex strip, 20-inner convex strip, 21-metal sheet, 22-positioning ring, 23-mounting foot, 24-stopper, 25-first annular holder, 26-second annular holder, 27-annular boss, 28-limiting connection seat, 29-limiting ring. DETAILED DESCRIPTION

[0035] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the embodiments and the accompanying drawings. The contents mentioned in the embodiments are not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0036] Example 1:

[0037] This embodiment provides a connector with stable signal, such as Figures 2 to 8 As shown, it includes a plastic seat 12, a metal outer cylinder 13 inserted into the plastic seat 12, an insulating seat 14 arranged in the metal outer cylinder 13, and a metal terminal assembled in the insulating seat 14. The metal outer cylinder 13, the insulating seat 14 and the metal terminal are coaxially arranged. The plastic seat 12 is provided with a docking hole 15. The front ends of the metal outer cylinder 13, the insulating seat 14 and the metal terminal are all exposed in the docking hole 15. The metal terminal includes a metal sleeve 1 and a claw spring 2. The claw spring 2 is used to clamp the external connection terminal. The metal sleeve 1 is provided with a cavity 3. The claw spring 2 is assembled in the cavity 3. The claw spring 2 includes a support part 4 and a clamping part connected to the support part 4. The outer periphery of the support part 4 is interference fit with the metal sleeve 1. The assembly diagram of the plastic seat 12, the metal outer cylinder 13, the insulating seat 14 and the metal terminal is shown in FIG. Figure 4 As shown, the clamping portion of this embodiment includes a plurality of spaced apart spring pieces 6 , one end of the spring piece 6 is fixed to the support portion 4 , and a clamping opening 7 is formed between the other ends of the plurality of spring pieces 6 , and the clamping opening 7 is used to assemble the external connection terminal.

[0038] Specifically, if Figure 1The figure shows a metal terminal in the prior art. Since the spring clip 6 and the metal end are integrally provided, the external connection terminal is clamped only by the spring clip 6, which easily leads to unstable connection and electrical contact. Therefore, in the prior art, a metal coating with better conductive properties is used on the metal end and the spring clip 6 to improve the stability of the electrical contact, but this also increases the manufacturing cost. In this embodiment, the metal sleeve 1 and the claw spring 2 are provided separately. Due to structural limitations, the claw spring 2 is more suitable for being fixed to the metal sleeve 1 by friction. However, since the claw spring 2 is thin, its own elastic force alone is insufficient to firmly fix it in the cavity 3 of the metal sleeve 1. The rigidity of the metal sleeve 1 is required to generate sufficient pressure on the claw spring 2 to ensure that the claw spring 2 is firmly fixed. Therefore, the claw spring 2 of this embodiment is directly assembled in the cavity 3, and the support portion 4 of the claw spring 2 is interference-fitted with the inner wall of the cavity 3, generating sufficient friction force on the support portion 4 through the inner wall of the cavity 3, and the inner wall of the cavity 3 forms a surface interference in hard interference with the support portion 4, and the inner wall of the cavity 3 can generate a positive force of tens of Newtons on the support portion 4, so that Figure 8 The support portion 4 in the direction has a tendency to shrink toward the center point (i.e., the center point of the clamp), which in turn makes the several spring pieces 6 also have a tendency to shrink. Therefore, when connected to the external connection terminal, in addition to the elastic clamping effect of the spring piece 6 itself, there is also the fixing effect of the positive force generated by the above-mentioned hard interference, which can firmly clamp the external connection terminal. Therefore, the claw spring 2 of this embodiment, in addition to being able to better fix the external connection terminal, can also effectively improve the stability of electrical contact. Therefore, the metal sleeve 1 and the claw spring 2 of this embodiment do not need to use a metal plating with better conductive properties to improve the electrical contact performance, because the claw spring 2 of this embodiment is sufficiently stable with the external connection terminal, which can reduce the production cost of this embodiment. Therefore, the connector of this embodiment using the above-mentioned metal terminal can be better connected to the external connector, which helps to improve the electrical contact stability between the two connectors.

[0039] Furthermore, the metal terminal of this embodiment, such as Figure 10 In the direction shown, the support part 4 is assembled at the cavity opening of the cavity 3, and the clamping part is located between the cavity opening and the cavity bottom of the cavity 3, that is, a shape similar to an inverted cone is formed between several spring pieces 6, and the clamping opening 7 with smaller space is located at the bottom. The external connector enters from the cavity opening of the cavity 3 with larger space and is then inserted into the clamping opening 7, making it easier to insert the external connection terminal into the clamping opening 7.

[0040] This embodiment provides a connector with stable signal, such as Figure 6The six spring pieces 6 are arranged at equal intervals. Specifically, the six spring pieces 6 of the claw spring 2 can ensure the contact area between the spring piece 6 and the external connection terminal, reduce the contact impedance and enhance the contact stability. In addition, the interference between the claw spring 2 and the metal sleeve 1 of this embodiment is evenly distributed, making the electrical contact between the spring piece 6 and the external connection terminal more stable, thereby effectively improving the stability of the electrical contact between the claw spring 2 and the external connection terminal.

[0041] Further, such as Figure 7 The cross-sectional area of ​​the end of the spring piece 6 connected to the support portion 4 is larger than the cross-sectional area of ​​the end of the spring piece 6 located at the clamping opening 7. Specifically, Figure 7 In the direction shown, the horizontal cross-sectional area of ​​the spring piece 6 gradually decreases from bottom to top. The spring piece 6 is wide at the bottom and has a narrow contact point with the external connection terminal, which avoids the problem of stress concentration when plugging and unplugging the external connection terminal, thereby enhancing the plug-in and unplugging resistance.

[0042] This embodiment provides a connector with stable signal, such as Figure 6 、 Figure 9 , the support portion 4 is annular; the accommodating cavity 3 includes an assembly cavity 8 and a bottom cavity 9 which are interconnected, the claw spring 2 is installed in the assembly cavity 8, the assembly cavity 8 is in the shape of a cylinder, and the bottom cavity 9 is in the shape of a cone.

[0043] Specifically, the assembly cavity 8 and the support portion 4 are both set to cylindrical shape, which can increase the contact surface between the inner wall of the assembly cavity 8 and the outer wall of the support portion 4, ensuring that the hard interference generates sufficient positive force. Figure 9 The inverted cone shape shown is such that after the external connection terminal is inserted, the tip of the inverted cone can better contact the external connection terminal.

[0044] Further, such as Figure 5 The outer wall of the metal sleeve 1 is provided with ribs 10 and bosses 11. Specifically, when the metal connection terminal of this embodiment is assembled into the insulating seat 14, the ribs 10 can interfere with the inner wall of the insulating seat 14 to fix the metal sleeve 1. The bosses 11, such as Figure 4 As shown, the clamp is connected to the bottom of the insulating seat 14, so that the installation position of the metal sleeve 1 can be positioned to facilitate assembly.

[0045] This embodiment provides a connector with stable signal, such as Figure 3 、 Figure 4 、 Figure 2 、 Figure 13As shown, the insulating seat 14 of this embodiment includes an upper insulating portion 16 and a lower insulating portion 17 connected to the upper insulating portion 16. The lower insulating portion 17 is detachably mounted on the plastic seat 12. The upper insulating portion 16 is assembled in the metal outer tube 13 and a plug-in gap is provided between the upper insulating portion 16 and the metal outer tube 13. The plug-in gap is used to accommodate external connection terminals. The front end of the metal outer tube 13 of this embodiment is provided with a plurality of metal sheets 21. The bottom end of the metal outer tube 13 is provided with a positioning ring 22. The positioning ring 22 is sleeved on the outer wall of the metal outer tube 13 and contacts the inner wall of the plastic seat 12. The bottom end of the metal outer tube 13 is extended with a plurality of spaced mounting feet 23 and a plurality of stoppers 24. There is at least one stopper 24 between adjacent mounting feet 23. The shape of the mounting feet 23 is as shown in FIG. Figure 3 and Figure 12 shown.

[0046] Specifically, if Figure 3 and Figure 13 As shown in the direction, the inner wall of the plastic seat 12 is provided with a first annular clamping seat 25 and a second annular clamping seat 26, and the outer periphery of the lower insulating portion 17 is provided with an annular boss 27. When assembling, first clamp the annular boss 27 of the insulating seat 14 onto the first annular clamping seat 25; then, the mounting foot 23 of the metal outer cylinder 13 is pressed against the second annular clamping seat 26, and the stopper 24 is pressed against the annular boss 27 of the insulating seat 14, thereby fixing the insulating seat 14. The docking hole 15 of the plastic seat 12 is equipped with a limited connection seat 28, the structure of which is as shown in FIG. Figures 2 to 4 As shown, the outer wall of the limiting connection seat 28 abuts against the inner wall of the docking hole 15, and a limiting ring 29 is protruded from the inner wall of the limiting connection seat 28. The limiting ring 29 is used to prevent the metal outer tube 13 from escaping. Therefore, the limiting connection seat 28 can prevent the metal outer tube 13 from loosening and protect the docking hole 15 of the plastic seat 12.

[0047] The metal sheets 21 of this embodiment are preferably provided with six pieces and are arranged at equal intervals, so as to have sufficient elasticity to ensure the plugging and unplugging force of the two connectors; Figure 3 and Figure 12 As shown, the length of the middle portion of the metal sheet 21 is shorter than the length of the two ends of the metal sheet 21. The shape of the metal sheet 21 is similar to an arc. The middle portion of the metal sheet 21 is bent toward the axial direction of the metal outer cylinder 13, so that the external connection terminal is contacted and clamped through the middle portion of the metal sheet 21. The narrow contact point of the metal sheet 21 can avoid stress concentration when plugging and unplugging the connector, enhance the plugging resistance, and increase the number of plugging and unplugging times. In addition, the bent arrangement of the metal sheet 21 can guide the plugging when connected to the external connector, making it easier to insert the external connector into the metal outer cylinder 13 of this embodiment.

[0048] This embodiment provides a connector with stable signal, such as Figure 3In this embodiment, both the outer wall and the inner wall of the insulating seat 14 are smooth.

[0049] Example 2:

[0050] This embodiment provides a connector with stable signal, such as Figure 14 In the second embodiment, based on the first embodiment, axial protrusions 18 are provided on the outer wall of the insulating seat 14. A plurality of axial protrusions 18 are provided on the outer walls of both the upper insulating portion 16 and the lower insulating portion 17. The plurality of axial protrusions 18 are arranged at equal intervals and extend axially between the upper insulating portion 16 and the lower insulating portion 17. Specifically, by providing the axial protrusions 18 and spacing between the axial protrusions 18, the high-frequency performance of this embodiment can be improved.

[0051] Example 3:

[0052] This embodiment provides a connector with stable signal, such as Figure 15 In the third embodiment, based on the first embodiment, transverse ridges 19 are provided on the outer wall of the insulating seat 14. A plurality of transverse ridges 19 are provided on the outer walls of both the upper insulating portion 16 and the lower insulating portion 17. These ridges 19 are evenly spaced and extend circumferentially along the upper insulating portion 16 and the lower insulating portion 17. That is, the transverse ridges 19 are coaxially arranged with the upper insulating portion 16 and the lower insulating portion 17. Specifically, by providing transverse ridges 19 with spacing between them, the high-frequency performance of this embodiment can be improved.

[0053] Example 4:

[0054] This embodiment provides a connector with stable signal, such as Figure 16 and Figure 17 In the fourth embodiment, based on the first embodiment, a plurality of equally spaced inner ridges 20 are provided on the inner wall of the insulating seat 14. The inner ridges 20 are arranged along the axial direction of the insulating seat 14. Specifically, by providing the inner ridges 20 and spacing between the inner ridges 20, the high-frequency performance of this embodiment can be improved.

[0055] Embodiment 5:

[0056] This embodiment provides a connector with stable signal, such as Figure 11 The difference between this embodiment and the first embodiment is that the assembly direction of the claw spring 2 is opposite to that of the first embodiment. The clamping opening 7 of the claw spring 2 is located at the cavity opening of the cavity 3, and the supporting portion 4 is located below the clamping opening 7. This assembly method can also fix the external connection terminal.

[0057] Example 6:

[0058] This embodiment provides a connector with stable signal, such as Figure 14In the sixth embodiment, based on the fifth embodiment, axial protrusions 18 are provided on the outer wall of the insulating seat 14. A plurality of axial protrusions 18 are provided on the outer walls of both the upper insulating portion 16 and the lower insulating portion 17. The plurality of axial protrusions 18 are arranged at equal intervals and extend axially between the upper insulating portion 16 and the lower insulating portion 17. Specifically, by providing the axial protrusions 18 and spacing between the axial protrusions 18, the high-frequency performance of this embodiment can be improved.

[0059] Embodiment seven:

[0060] This embodiment provides a connector with stable signal, such as Figure 15 In Example 7, based on Example 5, transverse ridges 19 are provided on the outer wall of the insulating seat 14. A plurality of transverse ridges 19 are provided on the outer walls of both the upper insulating portion 16 and the lower insulating portion 17. These ridges 19 are evenly spaced and extend circumferentially along the upper insulating portion 16 and the lower insulating portion 17. That is, the transverse ridges 19 are coaxially disposed with the upper insulating portion 16 and the lower insulating portion 17. Specifically, by providing transverse ridges 19 with spacing between them, the high-frequency performance of this embodiment can be improved.

[0061] Embodiment 8:

[0062] This embodiment provides a connector with stable signal, such as Figure 16 and Figure 17 In the eighth embodiment, based on the fifth embodiment, a plurality of equally spaced inner ridges 20 are provided on the inner wall of the insulating seat 14. The inner ridges 20 are arranged along the axial direction of the insulating seat 14. Specifically, by providing the inner ridges 20 and spacing between the inner ridges 20, the high-frequency performance of this embodiment can be improved.

[0063] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention is disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention are all within the scope of the technical solution of the present invention without departing from the content of the technical solution of the present invention.

Claims

1. A connector with stable signals, comprising a plastic base, a metal outer cylinder inserted into the plastic base, an insulating base disposed within the metal outer cylinder, and a metal terminal assembled within the insulating base, wherein the metal outer cylinder, insulating base, and metal terminal are coaxially arranged, the plastic base having a docking hole formed therein, and the front ends of the metal outer cylinder, insulating base, and metal terminal are all exposed through the docking hole, characterized in that: The metal terminal includes a metal sleeve and a claw spring, the claw spring is used to clamp the external connection terminal, the metal sleeve defines a cavity, and the claw spring is assembled in the cavity; the claw spring includes a support portion and a clamping portion connected to the support portion, and the outer periphery of the support portion is interference fit with the metal sleeve; The clamping portion includes a plurality of spaced-apart spring sheets, one end of each spring sheet is fixed to the supporting portion, and a clamping opening is formed between the other ends of the plurality of spring sheets, and the clamping opening is used to assemble the external connection terminal; The inner wall of the cavity generates friction on the support portion, and the inner wall of the cavity forms a surface interference in the hard interference between the inner wall of the cavity and the support portion. The inner wall of the cavity generates a positive force on the support portion, causing the support portion to have a tendency to shrink toward the center point, thereby causing the multiple springs to also have a tendency to shrink. Therefore, when connecting to the external connection terminal, in addition to the elastic clamping effect of the spring itself, there is also the fixing effect of the positive force generated by the hard interference, thereby firmly clamping the external connection terminal; The support portion is assembled at the cavity opening of the cavity, and the clamping portion is located between the cavity opening and the cavity bottom of the cavity; The cross-sectional area of ​​the end of the spring sheet connected to the support portion is larger than the cross-sectional area of ​​the end of the spring sheet located at the clamping opening; the horizontal cross-sectional area of ​​the spring sheet gradually decreases from the cavity toward the clamping opening, and the end of the spring sheet located at the clamping opening has a narrower contact point with the external connection terminal; The outer wall of the metal sleeve is provided with ribs and bosses. When the metal terminal is assembled into the insulating seat, the ribs interfere with the inner wall of the insulating seat, thereby fixing the metal sleeve. The boss is clamped to the bottom of the insulating seat to locate the installation position of the metal sleeve. The insulating seat includes an upper insulating portion and a lower insulating portion connected to the upper insulating portion, wherein the lower insulating portion is detachably mounted on the plastic seat, and the upper insulating portion is assembled in the metal outer cylinder and a plug-in gap is provided between the upper insulating portion and the metal outer cylinder, wherein the plug-in gap is used to accommodate the external connection terminal; The metal outer cylinder is provided with a plurality of metal sheets, which are arranged at intervals. The metal sheets are exposed from the docking holes of the plastic seat, and the length of the middle portion of the metal sheet is shorter than the length of the two ends of the metal sheet. The metal sheet is in an arc shape, and the middle part of the metal sheet is bent toward the axis of the metal outer cylinder, so that the middle part of the metal sheet contacts and clamps the external connection terminal. When connecting with the external connector, the metal sheet guides the insertion. A positioning ring is installed at the bottom end of the metal outer tube. The positioning ring is sleeved on the outer wall of the metal outer tube and contacts the inner wall of the plastic seat. A plurality of spaced mounting feet and a plurality of stoppers are extended from the bottom end of the metal outer tube. At least one stopper is provided between adjacent mounting feet. The inner wall of the plastic seat is provided with a first annular clamping seat and a second annular clamping seat, and the outer periphery of the lower insulating part is provided with an annular boss. During assembly, the annular boss of the insulating seat is first clamped on the first annular clamping seat; then the mounting foot of the metal outer cylinder is pressed against the second annular clamping seat, and the stopper is pressed against the annular boss of the insulating seat, thereby fixing the insulating seat; a limited connection seat is assembled at the docking hole of the plastic seat, the outer wall of the limited connection seat is pressed against the inner wall of the docking hole, and a limiting ring is protruded from the inner wall of the limited connection seat.

2. The connector with stable signal according to claim 1, characterized in that: The outer walls of the upper insulating portion and the lower insulating portion are both provided with a plurality of axial convex strips, the plurality of axial convex strips are arranged at intervals, and the axial convex strips are arranged along the axial direction of the upper insulating portion and the lower insulating portion.

3. The connector with stable signal according to claim 1, characterized in that: A plurality of transverse ridges are protruded from the outer walls of the upper insulating portion and the lower insulating portion. The transverse ridges are arranged at intervals, and the transverse ridges are coaxially arranged with the upper insulating portion and the lower insulating portion.

4. The connector with stable signal according to claim 1, characterized in that: The inner wall of the insulating seat is provided with a plurality of inner convex strips, the plurality of inner convex strips are arranged at intervals, and the inner convex strips are arranged along the axial direction of the insulating seat.

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