Anti-loosening cable connector

Abstract

The invention discloses an anti-loosening cable connector, which comprises a socket connector and a plug connector, and is characterized in that the socket connector comprises a first outer conductor, a second outer conductor, an insulator and a guide pin; the plug connector comprises a nut, an outer guide shell, a contact conductor, a central conductor and an insulating block. According to the plug connector, the first outer step of the outer guide shell is in clearance fit with the first outer conductor, the first outer step of the outer guide shell is in clearance fit with the nut, the barrel part is in clearance fit with the hole wall of the third through hole, when the cable is stressed or rotates, the plug connector body can rotate, and finally stress release of the cable is achieved. In the process, the threaded matching position between the nut and the first outer conductor is not affected by the stress of the cable, and the nut cannot loosen, so that stable connection and high-quality signal transmission of the anti-loosening cable connector in various complex working environments are ensured.

Description

Technical Field

[0001] The invention relates to the field of cable connectors, and in particular to an anti-loosening cable connector. Background Art

[0002] Radio frequency coaxial connectors (hereinafter referred to as RF connectors) are generally regarded as components installed on cables or instruments, which are dedicated to the transmission of radio frequency signals. At present, most RF connectors on the market use a threaded connection fastening mechanism. For example, IEC 61169-32 defines a threaded locking 2.92 RF coaxial connector, which achieves a stable connection by pressing the plug and the socket together, thereby realizing radio frequency signal transmission.

[0003] However, when the cable is under stress or in a rotating environment, the connecting sleeve may become loose, thereby affecting the transmission effect and stability of the RF signal. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a cable connector which is anti-loosening and has stable connection and high-quality signal transmission.

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0006] A cable connector that prevents loosening, comprising:

[0007] A socket connector, the socket connector comprising a first outer conductor, a second outer conductor, an insulator, and a guide pin, wherein the first outer conductor is provided with a first receiving cavity, the second outer conductor is located in the first receiving cavity, and the outer wall surface of the second outer conductor is in contact with the cavity wall of the first receiving cavity; the second outer conductor is provided with a second receiving cavity, the insulator is located in the second receiving cavity, and the outer wall of the insulator is in contact with the cavity wall of the second receiving cavity; the insulator has a first through hole, the guide pin has a portion located in the first through hole, and the guide pin wall located in the first through hole portion is in contact with the hole wall of the first through hole; the guide pin has an insertion hole; and

[0008] A plug connector, the plug connector comprising a nut, an outer guide shell, a contact conductor, a center conductor and an insulating block, the nut having a first inner cavity, the nut comprising a first inner step, the outer guide shell comprising a first outer step, the outer guide shell having a portion located in the first inner cavity; the outer guide shell having a second inner cavity, the contact conductor having a portion located in the second inner cavity, the contact conductor having a third inner cavity, the center conductor having a portion located in the third inner cavity, the insulating block being located in the second inner cavity, the insulating block having a second through hole, the center conductor having a portion located in the second through hole, the center conductor located in the second through hole portion being in contact with the hole wall of the second through hole;

[0009] Among them, the center conductor is inserted into the jack, and the center conductor is in contact with the guide pin; the nut has an internal thread, and the first outer conductor has an external thread, and the nut and the first outer conductor are threadedly connected; the first outer step of the outer guide shell is limited between the first inner step of the nut and the first outer conductor, the first outer step of the outer guide shell and the first outer conductor are loosely matched, the first outer step of the outer guide shell and the nut are loosely matched, the nut has a third through hole passing through the first inner step, and the outer guide shell has a cylindrical body portion located in the third through hole, and the cylindrical body portion is loosely matched with the hole wall of the third through hole.

[0010] Compared with the prior art, the first outer step of the outer guide shell of the present invention is loosely matched with the first outer conductor, the first outer step of the outer guide shell is loosely matched with the nut, and the barrel portion is loosely matched with the hole wall of the third through hole. When the cable is subjected to stress or rotated, the plug connector body can be rotated, and finally the stress of the cable is released. In this process, the threaded fitting between the nut and the first outer conductor is not affected by the stress of the cable, and the nut will not loosen, so as to ensure the stable connection and high-quality signal transmission of the anti-loosening cable connector in various complex working environments.

[0011] Further, the outer diameter of the barrel portion is smaller than the outer diameter of the first outer step, the outer conductor housing includes a second inner step, the contact conductor includes a second outer step, and the second inner step and the second outer step are position-limitedly connected;

[0012] The cylindrical body has a portion located between the contact conductor and the first inner step of the nut, and the first outer step and the second inner step of the outer guide shell are located between the cavity wall of the nut and the outer wall of the contact conductor.

[0013] Furthermore, the contact conductor includes a first barrel portion, a second barrel portion and a third barrel portion, the first barrel portion is located in the first receiving cavity of the first outer conductor, the second barrel portion is located in the cavity formed by the second inner step of the outer conductor shell, and the third barrel portion is located in the barrel cavity of the outer conductor shell barrel portion; the insulating block is in contact with the third barrel portion.

[0014] Furthermore, the plug connector includes an inner guide shell, the inner guide shell is located in the second inner cavity of the outer guide shell, the inner guide shell has a third inner step, the insulating block is located in the cavity formed by the third inner step, and the insulating block is limit-connected to the third inner step.

[0015] Furthermore, the first barrel portion of the contact conductor has a plurality of first slots extending in the axial direction, and the outer wall of the first barrel portion contacts the inner wall of the first outer conductor to form a ground connection.

[0016] Further, the guide needle comprises a guide tube, a first guide column and a second guide column, the guide tube is provided with a plurality of second slots extending in the axial direction, the center conductor has a portion inserted in the second slot, and the outer wall of the center conductor contacts the inner wall of the guide tube;

[0017] The first guide post is located in the first through hole of the insulator, and the outer wall of the first guide post is in contact with the hole wall of the first through hole; the second guide post has a second receiving cavity partially located in the second outer conductor, and there is a gap between the second guide post and the second outer conductor;

[0018] The anti-loosening cable connector also includes a circuit board, and the second guide column is connected to the circuit board.

[0019] Furthermore, the first inner step of the nut includes a rotation terminating end face, and an extending direction of the rotation terminating end face is perpendicular to the axial direction.

[0020] Furthermore, there is a first gap between the cavity wall of the nut and the outer wall of the outer guide shell, a second gap between the outer wall of the barrel and the cavity wall of the nut, and a third gap between the outer guide shell and the first outer conductor. The width of the third gap is greater than the width of the first gap, and the width of the third gap is greater than the width of the second gap.

[0021] Furthermore, the anti-loosening cable connector also includes a bolt, the first outer conductor includes a flange, the circuit board and the flange both have threaded holes, and the external threads of the bolt are rotatably fitted in the threaded holes of the circuit board and the flange.

[0022] Furthermore, the first outer conductor includes a cylindrical portion, the flange is connected to the cylindrical portion, the flange is in the shape of a racetrack, the number of the bolts is two, the number of the threaded holes of the flange is two, the two threaded holes of the flange are located on opposite sides of the radial direction of the cylindrical portion, and the two bolts are rotatably matched with the two threaded holes in a one-to-one correspondence. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional diagram of a cable connector that prevents loosening according to an embodiment of the present invention;

[0024] Figure 2 Yes Figure 1 An exploded view of the cable connector shown;

[0025] Figure 3 Yes Figure 1 A cross-sectional view of the cable connector shown;

[0026] Figure 4 Yes Figure 2 a perspective cutaway view of the socket connector shown;

[0027] Figure 5 Yes Figure 2 a perspective view of the plug connector shown;

[0028] Figure 6 Yes Figure 5 a partial perspective cutaway view of the plug connector shown;

[0029] Figure 7 Yes Figure 1 a partial perspective cutaway view of the cable connector shown;

[0030] Figure 8 Yes Figure 1 A partial cutaway view of the cable connector shown.

[0031] Description of reference numerals in the figure: socket connector 10, first outer conductor 11, first receiving cavity 111, external thread 112, flange 113, threaded hole 59, cylindrical portion 115, second outer conductor 12, second receiving cavity 121, insulator 13, first through hole 131, guide pin 14, plug hole 141, guide cylinder 142, first guide column 143, second guide column 144, second slot 145;

[0032] Plug connector 50, nut 51, first inner cavity 511, first inner step 512, internal thread 513, third through hole 514, rotation termination end face 515, outer guide shell 52, first outer step 521, second inner cavity 522, barrel portion 523, second inner step 524, contact conductor 53, third inner cavity 531, second outer step 532, first barrel portion 533, second barrel portion 534, third barrel portion 535, first slot 536, center conductor 54, insulating block 55, second through hole 551, inner guide shell 56, third inner step 561, circuit board 57, bolt 58, first gap 61, second gap 62, third gap 63. DETAILED DESCRIPTION

[0033] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0034] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0035] It should be understood that the words "first", "second" and similar words used in the specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "an" do not indicate a quantity limitation, but indicate the existence of at least one; "plurality" indicates a quantity of two or more. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for convenience of description and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects.

[0036] The exemplary embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations may complement or be combined with each other.

[0037] like Figures 1 to 8 As shown, a cable connector 100 that prevents loosening according to the present invention comprises: a socket connector 10 and a plug connector 50 .

[0038] The socket connector 10 includes a first outer conductor 11, a second outer conductor 12, an insulator 13 and a guide pin 14. The guide pin 14 has an insertion hole 141. The first outer conductor 11 is provided with a first receiving cavity 111. The second outer conductor 12 is located in the first receiving cavity 111. The outer wall surface of the second outer conductor 12 is in contact with the cavity wall of the first receiving cavity 111. The second outer conductor 12 is provided with a second receiving cavity 121. The insulator 13 is located in the second receiving cavity 121. The outer wall of the insulator 13 is in contact with the cavity wall of the second receiving cavity 121. The insulator 13 has a first through hole 131. The guide pin 14 has a portion located in the first through hole 131. The guide pin wall located in the portion of the first through hole 131 is in contact with the hole wall of the first through hole 131.

[0039] The plug connector 50 includes a nut 51, an outer guide shell 52, a contact conductor 53, a center conductor 54, and an insulating block 55. The nut 51 has a first inner cavity 511, the nut 51 includes a first inner step 512, the outer guide shell 52 includes a first outer step 521, and the outer guide shell 52 has a portion located in the first inner cavity 511. The outer guide shell 52 has a second inner cavity 522, the contact conductor 53 has a portion located in the second inner cavity 522, the contact conductor 53 has a third inner cavity 531, and the center conductor 54 has a portion located in the third inner cavity 531. The insulating block 55 is located in the second inner cavity 522, the insulating block 55 has a second through hole 551, and the center conductor 54 has a portion located in the second through hole 551. The center conductor 54 located in the second through hole 551 is in contact with the hole wall of the second through hole 551.

[0040] The center conductor 54 is inserted into the insertion hole 141, and the center conductor 54 contacts the guide pin 14. The nut 51 has an internal thread 513, and the first outer conductor 11 has an external thread 112, and the nut 51 and the first outer conductor 11 are threadedly connected. The first outer step 521 of the outer guide shell 52 is limited between the first inner step 512 of the nut 51 and the first outer conductor 11, and the first outer step 521 of the outer guide shell 52 and the first outer conductor 11 are clearance-matched. The first outer step 521 of the outer guide shell 52 and the nut 51 are clearance-matched, and the nut 51 has a third through hole 514 that passes through the first inner step 512, and the outer guide shell 52 has a barrel portion 523 located in the third through hole 514, and the barrel portion 523 and the hole wall of the third through hole 514 are clearance-matched.

[0041] Compared with the prior art, the first outer step 521 of the outer guide shell 52 of the present invention and the first outer conductor 11 are in clearance fit, the first outer step 521 of the outer guide shell 52 and the nut 51 are in clearance fit, and the barrel portion 523 and the hole wall of the third through hole 514 are in clearance fit. When the cable is subjected to stress or rotated, the main body of the plug connector 50 can rotate, and finally the stress of the cable is released. In this process, the threaded fitting between the nut 51 and the first outer conductor 11 is not affected by the stress of the cable, and the nut 51 will not loosen, so as to ensure the stable connection and high-quality signal transmission of the anti-loosening cable connector in various complex working environments.

[0042] The outer diameter of the barrel portion 523 is smaller than the outer diameter of the first outer step 521, the outer guide shell 52 includes a second inner step 524, and the contact conductor 53 includes a second outer step 532. The second inner step 524 and the second outer step 532 are limitedly connected, thereby improving the mobility of the plug connector 50 between the contact conductor 53 and the nut 51. The barrel portion 523 has a portion located between the contact conductor 53 and the first inner step 512 of the nut 51, and the first outer step 521 and the second inner step 524 of the outer guide shell 52 are located between the cavity wall of the nut 51 and the outer wall of the contact conductor 53.

[0043] The contact conductor 53 includes a first barrel portion 533, a second barrel portion 534 and a third barrel portion 535. The first barrel portion 533 is located in the first inner cavity 511 of the nut 51, the second barrel portion 534 is located in the cavity formed by the second inner step of the outer guide shell 52, and the third barrel portion 535 is located in the barrel cavity of the barrel portion 523 of the outer guide shell 52; the insulating block 55 is in contact with the third barrel portion 535. The contact conductor 53 arranged in this way can improve the mobility of the plug connector 50 between the contact conductor 53 and the nut 51, and the arrangement of the insulating block 55 plays the role of insulating and fixing the contact conductor 53.

[0044] The plug connector 50 includes an inner guide shell 56, which is located in the second inner cavity 522 of the outer guide shell 52. The inner guide shell 56 has a third inner step 561. The insulating block 55 is located in the cavity formed by the third inner step 561, and the insulating block 55 is limitedly connected to the third inner step 561. The first barrel 533 of the contact conductor 53 has a plurality of first slots 536 extending in the axial direction. The outer wall of the first barrel 533 contacts the inner wall of the first outer conductor 11 to form a ground connection. The provision of the first slots 536 improves the elasticity of the first barrel 533. When the first barrel 533 is inserted into the contracted inner cavity of the second outer conductor 12, the inner gathering of the first barrel 533 reduces the insertion resistance, thereby improving the convenience of the insertion and installation of the first barrel 533.

[0045] The guide pin 14 includes a guide cylinder 142, a first guide post 143 and a second guide post 144. The guide cylinder 142 is provided with a plurality of second slots 145 extending in the axial direction. The center conductor 54 is partially inserted in the second slots 145, and the outer wall of the center conductor 54 contacts the inner wall of the guide cylinder 142. The second slots 145 increase the outward expandability of the guide cylinder 142, thereby reducing the insertion resistance of the center conductor 54 and increasing the connection stability between the center conductor 54 and the guide cylinder 142 under the action of the rebound force. The first guide post 143 is located in the first through hole 131 of the insulator 13, and the outer wall of the first guide post 143 is in contact with the hole wall of the first through hole 131. The insulator 13 plays the role of insulating and stabilizing the installation of the guide pin 14. The second guide post 144 has a second receiving cavity 121 partially located in the second outer conductor 12, and there is a gap between the second guide post 144 and the second outer conductor 12. The gap between the second guide post and the second outer conductor 12 provides a movable space for the second outer conductor 12, and improves the compatibility of installation errors when the guide pin 14 is connected to an external circuit board.

[0046] The anti-loosening cable connector further includes a circuit board 57 , and the second guide pillar 144 is connected to the circuit board 57 .

[0047] The first inner step 512 of the nut 51 includes a rotation termination end face 515, and the extension direction of the rotation termination end face 515 is perpendicular to the axial direction. The rotation termination end face 515 is designed during the tightening process of the nut 51. When the nut 51 is screwed onto the rotation termination end face 515, it means that the nut is screwed into place.

[0048] like Figure 8As shown, there is a first gap 61 between the cavity wall of the nut 51 and the outer wall of the outer guide shell 52, a second gap 62 between the outer wall of the barrel 523 and the cavity wall of the nut 51, and a third gap 63 between the outer guide shell 52 and the first outer conductor 11. The width of the third gap 63 is smaller than the width of the first gap 61, and the width of the third gap 63 is smaller than the width of the second gap 62. The width of the third gap 63 is 0.35 mm, and the widths of the first gap 61 and the second gap 62 are both 0.59 mm. After numerous experiments by the inventor, it is found that the width of such a design is not too large to cause poor cable limiting performance and easy shaking, nor is it too small to cause the cable to be unable to rotate under stress. The setting of multiple gaps in the first gap 61, the second gap 62, and the third gap 63 improves the mobility of the plug connector 50 between the contact conductor 53 and the nut 51.

[0049] The anti-loosening cable connector further includes a bolt 58, the first outer conductor 11 includes a flange 113, the circuit board 57 and the flange 113 both have threaded holes 59, and the outer threads of the bolt 58 are rotatably fitted in the threaded holes 59 of the circuit board 57 and the flange 113. The bolt 58 realizes a fixed connection between the circuit board 57 and the flange 113.

[0050] The first outer conductor 11 includes a cylindrical portion 115, and a flange 113 is connected to the cylindrical portion 115. The flange 113 is in the shape of a racetrack. There are two bolts 58, and there are two threaded holes 59 in the flange 113. The two threaded holes 59 of the flange 113 are located on opposite sides of the radial direction of the cylindrical portion 115. The two bolts 58 and the two threaded holes 59 are rotatably matched one-to-one, which enhances the connection stability between the circuit board 57 and the flange 113, thereby improving the reliability of the connection between the guide pin 14 and the circuit board 57, thereby ensuring stable signal transmission.

[0051] The present invention is not limited to the above-mentioned specific implementation modes. Various changes made by ordinary technicians in this field based on the above-mentioned concepts without creative work are all within the protection scope of the present invention.

Claims

1. A cable connector that prevents loosening, characterized in that: include: A socket connector, the socket connector comprising a first outer conductor, a second outer conductor, an insulator, and a guide pin, the first outer conductor being provided with a first receiving cavity, the second outer conductor being located in the first receiving cavity, the outer wall surface of the second outer conductor being in contact with the cavity wall of the first receiving cavity; the second outer conductor being provided with a second receiving cavity, the insulator being located in the second receiving cavity, the outer wall of the insulator being in contact with the cavity wall of the second receiving cavity; the insulator being provided with a first through hole, the guide pin being partially located in the first through hole, the guide pin wall being located in the first through hole being in contact with the hole wall of the first through hole; the guide pin being provided with an insertion hole; as well as A plug connector, the plug connector comprising a nut, an outer guide shell, a contact conductor, a center conductor and an insulating block, the nut having a first inner cavity, the nut comprising a first inner step, the outer guide shell comprising a first outer step, the outer guide shell having a portion located in the first inner cavity; the outer guide shell having a second inner cavity, the contact conductor having a portion located in the second inner cavity, the contact conductor having a third inner cavity, the center conductor having a portion located in the third inner cavity, the insulating block being located in the second inner cavity, the insulating block having a second through hole, the center conductor having a portion located in the second through hole, the center conductor located in the second through hole portion being in contact with the hole wall of the second through hole; Among them, the center conductor is inserted into the jack, and the center conductor is in contact with the guide pin; the nut has an internal thread, and the first outer conductor has an external thread, and the nut and the first outer conductor are threadedly connected; the first outer step of the outer guide shell is limited between the first inner step of the nut and the first outer conductor, the first outer step of the outer guide shell and the first outer conductor are loosely matched, the first outer step of the outer guide shell and the nut are loosely matched, the nut has a third through hole passing through the first inner step, and the outer guide shell has a cylindrical body portion located in the third through hole, and the cylindrical body portion is loosely matched with the hole wall of the third through hole.

2. The anti-loosening cable connector according to claim 1, characterized in that: The outer diameter of the cylindrical body is smaller than the outer diameter of the first outer step, the outer guide shell includes a second inner step, the contact conductor includes a second outer step, and the second inner step and the second outer step are position-limitingly connected; The cylindrical body has a portion located between the contact conductor and the first inner step of the nut, and the first outer step and the second inner step of the outer guide shell are located between the cavity wall of the nut and the outer wall of the contact conductor.

3. The anti-loosening cable connector according to claim 2, characterized in that: The contact conductor includes a first barrel portion, a second barrel portion and a third barrel portion, wherein the first barrel portion is located in a first receiving cavity of the first outer conductor, the second barrel portion is located in a cavity formed by a second inner step of the outer conductor shell, and the third barrel portion is located in a barrel cavity of the outer conductor shell barrel portion; the insulating block contacts the third barrel portion.

4. The anti-loosening cable connector according to claim 3, characterized in that: The plug connector comprises an inner guide shell, the inner guide shell is located in the second inner cavity of the outer guide shell, the inner guide shell has a third inner step, the insulating block is located in the cavity formed by the third inner step, and the insulating block is limit-connected to the third inner step.

5. The anti-loosening cable connector according to claim 4, characterized in that: The first barrel portion of the contact conductor has a plurality of first slots extending in the axial direction, and the outer wall of the first barrel portion contacts the inner wall of the first outer conductor to form a ground connection.

6. The anti-loosening cable connector according to claim 5, characterized in that: The guide needle comprises a guide tube, a first guide column and a second guide column, the guide tube is provided with a plurality of second slots extending in the axial direction, the central conductor is partially inserted in the second slots, and the outer wall of the central conductor contacts the inner wall of the guide tube; The first guide post is located in the first through hole of the insulator, and the outer wall of the first guide post is in contact with the hole wall of the first through hole; the second guide post has a second receiving cavity partially located in the second outer conductor, and there is a gap between the second guide post and the second outer conductor; The anti-loosening cable connector also includes a circuit board, and the second guide column is connected to the circuit board.

7. The anti-loosening cable connector according to claim 6, characterized in that: The first inner step of the nut includes a rotation terminating end surface, and an extending direction of the rotation terminating end surface is perpendicular to the axial direction.

8. The anti-loosening cable connector according to claim 7, characterized in that: There is a first gap between the cavity wall of the nut and the outer wall of the outer guide shell, a second gap between the outer wall of the barrel and the cavity wall of the nut, and a third gap between the outer guide shell and the first outer conductor. The width of the third gap is greater than the width of the first gap, and the width of the third gap is greater than the width of the second gap.

9. The anti-loosening cable connector according to claim 8, characterized in that: The anti-loosening cable connector also includes a bolt, the first outer conductor includes a flange, the circuit board and the flange both have threaded holes, and the outer threads of the bolt are rotatably fitted in the threaded holes of the circuit board and the flange.

10. The anti-loosening cable connector according to claim 9, characterized in that: The outer conductor includes a cylindrical portion, the flange is connected to the cylindrical portion, the flange is in the shape of a racetrack, the number of the bolts is two, the number of the threaded holes of the flange is two, the two threaded holes of the flange are located on opposite sides of the radial direction of the cylindrical portion, and the two bolts are rotatably matched with the two threaded holes in a one-to-one correspondence.

Images