Jack assembly and connector

Abstract

The utility model provides a jack assembly and a connector, and belongs to the field of electric connectors. The jack assembly comprises a rear sleeve, one axial end of the rear sleeve is an insertion end and is provided with a mounting hole, a cylindrical crown spring is arranged in the mounting hole, the crown spring is provided with an outward turning part, the jack assembly further comprises an inner supporting body which is arranged on the inner side of an end belt connected with the outward turning part and is used for supporting the end belt to be of a perfect circle structure, and the inner supporting body is provided with an insertion hole for a pin to penetrate through. The inner supporting body is independently arranged or is integrally or fixedly connected with the end side pressing body. The connector comprises a shell and the jack assembly. According to the utility model, the inner support body is arranged, so that the crown spring can be supported in the radial direction by using the inner support body during assembly, and the outward turning part on the elastic body can be attached to the end surface of the insertion end of the background, so that enough contact area is formed between the crown spring and the rear sleeve to ensure better over-current capability, and the transmission of large current is facilitated.

Description

Technical Field

[0001] The utility model belongs to the field of electrical connectors, and particularly relates to a jack assembly and a connector. Background Art

[0002] The jack assembly is an important structure in an electrical connector. Generally, it includes a rear sleeve and a crown spring disposed in the rear sleeve. The crown spring is elastic and is used for conducting electricity between a pin and the rear sleeve. The crown spring is generally formed by stamping a metal sheet with good elasticity into a fence shape and then rolling it into a shape. It includes end bands at both axial ends and connecting strips connected between the end bands. During the process of rolling into a circle, the middle part of the crown spring is waist-shaped, so that the long strip in the middle of the crown spring is concave inward in the radial direction to form a throat circle. In order to ensure that the crown spring can deform axially after being radially pressed by the pin, an axial gap needs to be left between the crown spring and the rear sleeve, which causes the whole crown spring to axially move in the mounting hole, resulting in poor stability. When used in a vibration environment, the inner wall of the mounting hole of the crown spring and the crown spring will be in poor contact due to wear, and the vibration environment will also make the current transmission unstable, resulting in problems such as burning and damage of the rear sleeve.

[0003] The Chinese invention patent application with the application publication number of CN102801019A and the application publication date of November 28, 2012 discloses a large-current cage-type spring-loaded jack, which includes a jack body (i.e., a rear sleeve) and a spring-loaded strip disposed in the jack body. The spring-loaded strip includes a comb-shaped metal sheet composed of a plurality of elastic metal strips and a fixing piece connected to each elastic metal strip. After the comb-shaped metal sheet is curled, it is inserted into the jack body, and the free ends of the elastic metal strips of the comb-shaped metal sheet extend out of the jack body, and the ends of the elastic metal strips are bent backward to the outside of the jack body. Finally, a sheath is sleeved on the outside of the jack body, and the free ends of the elastic metal strips are pressed against the outside of the jack body by the sheath. Finally, the sheath and the jack body are fixedly connected by a crimping method. During the assembly process of the comb-shaped metal sheet in this technical solution, since one end of each elastic metal strip is not connected to each other, each metal strip is extremely easy to be misaligned and deformed, and it is difficult to control the spacing of each elastic metal strip evenly, and the radial dimension of the concave part in the middle of the spring-loaded strip is also difficult to meet the design requirements.

[0004] The Chinese invention patent application with the publication number CN108110462A and the publication date of June 1, 2018 discloses a socket. The socket includes a jack housing (i.e., the rear sleeve). One end of the jack housing is an insertion end for inserting into a pin. The insertion end is provided with a mounting hole, and a crown spring is arranged in the mounting hole. One axial end of the crown spring is turned outwards to form an outer folded fin (i.e., the outer turned part). The outer folded fin is buckled on the end wall of the insertion end of the rear sleeve. A jacket cylinder (i.e., the fixing structure) is fixedly arranged outside the rear sleeve. One end of the jacket cylinder close to the insertion end is provided with an end-side pressing body bent inwards. When the jacket cylinder is fixed to the rear sleeve, the end-side pressing body and the insertion end jointly clamp the outer turned part. On the one hand, it enables the crown spring to form a stable electrical connection with the rear sleeve. On the other hand, it can prevent the crown spring from moving axially and being worn. The outer turned part can also play a positioning role during assembly, facilitating accurate assembly.

[0005] However, since the crown spring is formed by rolling a metal sheet, the strength of the metal sheet of the crown spring is weak, resulting in the crown spring not being able to form a standard perfect circle after rolling. Coupled with being squeezed during storage and transportation, its shape is closer to an ellipse. When the elliptical crown spring is assembled, a part of the outer turned part will not be able to fit and conduct electricity with the end face of the insertion end of the rear sleeve, nor can it be pressed by the end-side pressing body on the end face of the insertion end. Instead, it is in a suspended state. As a result, the electrical contact area between the crown spring and the rear sleeve is severely reduced, which is not conducive to the transmission of a large current. Moreover, the elliptical crown spring will also affect the contact area between the throat circle and the pin, which is not conducive to good electrical conduction with the pin. Utility Model Content

[0006] One object of the present utility model is to provide a jack assembly to solve the technical problems in the prior art that the crown spring cannot form a standard circle, resulting in a reduction in the electrical contact area between the crown spring and the rear sleeve due to a part of the outer turned part not being able to fit onto the end face of the insertion end, which is not conducive to the transmission of a large current, and the reduction in the contact area between the throat circle and the pin affecting the electrical conduction effect.

[0007] One object of the present utility model is to provide a connector to solve the above technical problems.

[0008] To achieve the above object, the technical solution of the jack assembly provided by the present utility model is:

[0009] The jack assembly includes a rear sleeve, one axial end of the rear sleeve is an insertion end and is provided with a mounting hole, a crown spring is provided in the mounting hole, the crown spring includes end bands at both ends and connecting strips connected between the end bands, one of the end bands is connected with an outward-turned portion folded outward and snapped onto the end surface of the insertion end, the jack assembly also includes an inner support body arranged on the inner side of the end band connected to the outward-turned portion and stretching the end band into a perfect circular structure, the inner support body is provided with an insertion hole for the pin to pass through, the inner support body is independently arranged and is interference fit with the mounting hole by squeezing the end band, or the jack assembly also includes an end side clamping body fixed on the rear sleeve and axially compressing the outward-turned portion, the inner support body and the end side clamping body are integrated or fixedly connected.

[0010] As a further improvement, the axial length of the inner support body is greater than or equal to the axial length of the supported end band.

[0011] As a further improvement, the socket assembly also includes an end side clamping body fixed on the rear sleeve and axially compressing the outward-turned portion, the inner support body is integral with or fixedly connected to the end side clamping body, the difference between the inner diameter of the mounting hole and the outer diameter of the inner support body is less than twice the radial thickness of the end band, and the inner support body is configured to be an inner clamping body for interference fit with the end band to radially compress the end band against the inner wall of the mounting hole.

[0012] As a further improvement, the socket assembly also includes an end side clamping body fixed on the rear sleeve and axially compressing the outward-turned portion, the inner support body is integral with or fixedly connected to the end side clamping body, an arcuate contact wall with an arcuate transition is provided between the inner wall of the mounting hole and the end face of the plug-in end, and an arcuate transition portion adapted to the arcuate contact wall is provided between the outward-turned portion and the corresponding end band.

[0013] As a further improvement, a transition clamping body is provided between the end side clamping body and the inner support body, and an arcuate clamping wall matching the arcuate transition portion is provided on the transition clamping body, and the arcuate clamping wall and the arcuate contact wall jointly clamp the arcuate transition portion of the crown spring.

[0014] As a further improvement, the jack assembly also includes an end side clamping body fixed on the rear sleeve and axially compressing the outward-turned portion, the inner support body is integral with or fixedly connected to the end side clamping body, the jack assembly also includes a sleeve, the sleeve includes a connecting portion for being sleeved outside the rear sleeve and fixedly connected to the rear sleeve, the sleeve also includes a stopper located at one axial end of the connecting portion and turned inward, the stopper is located on the side of the end side clamping body away from the outward-turned portion and cooperates with the end side clamping body in the axial direction, and the end side clamping body is fixed to the rear sleeve through the sleeve.

[0015] As a further improvement, a groove for the stopper to be embedded is provided on one side of the end side pressing body away from the outward turning portion, and a side wall of the end side pressing body away from the outward turning portion is aligned with a side wall of the stopper away from the outward turning portion.

[0016] As a further improvement, the jack assembly also includes an end side clamping body fixed on the rear sleeve and axially compressing the outward-turned portion, the inner support body is integrally or fixedly connected to the end side clamping body, the outer side of the end side clamping body is fixed or integrally connected with a sleeve, and the sleeve is sleeved and fixed on the outer side of the rear sleeve.

[0017] As a further improvement, the axial end wall of the inner support body is an arc-shaped wall.

[0018] The beneficial effect is that the jack assembly provided by the utility model is an improvement over the prior art. Compared with the prior art, the jack assembly is provided with an inner support body. During the assembly process, the inner support body can open the end band of the crown spring outward at the position of the inner side of the crown spring near the plug-in end, so that the outward-turned part on the crown spring is fully unfolded outward, so that the outward-turned part can fit on the end surface of the plug-in end, effectively ensuring sufficient contact area between the crown spring and the rear sleeve, so that the crown spring and the rear sleeve have good current flow capacity, which is conducive to the transmission of large current. In addition, the inner support body can also produce a correction effect on the throat circle part in the middle of the crown spring, improve the roundness of the throat circle part, and improve the contact and conductive performance between the crown spring and the plug pin.

[0019] In order to achieve the above-mentioned purpose, the technical solution of the connector provided by the utility model is:

[0020] A connector, comprising a shell and a jack assembly, wherein the jack assembly comprises a rear sleeve, wherein one axial end of the rear sleeve is a plug-in end and is provided with a mounting hole, wherein a crown spring is provided in the mounting hole, wherein the crown spring comprises end bands at both ends and connecting strips connected between the end bands, wherein one of the end bands is connected with an outward-turned portion folded outwardly and snapped onto the end surface of the plug-in end, wherein the jack assembly further comprises an inner support body which is arranged on the inner side of the end band connected with the outward-turned portion and props the end band into a perfect circular structure, wherein an insertion hole is provided on the inner support body for the insertion pin to pass through, wherein the inner support body is independently arranged and is interference fit with the mounting hole by squeezing the end band, or wherein the jack assembly further comprises an end side pressing body which is fixed on the rear sleeve and presses the outward-turned portion axially, wherein the inner support body is integral with or fixedly connected to the end side pressing body.

[0021] As a further improvement, the axial length of the inner support body is greater than or equal to the axial length of the supported end band.

[0022] As a further improvement, the socket assembly also includes an end side clamping body fixed on the rear sleeve and axially compressing the outward-turned portion, the inner support body is integral with or fixedly connected to the end side clamping body, the difference between the inner diameter of the mounting hole and the outer diameter of the inner support body is less than twice the radial thickness of the end band, and the inner support body is configured to be an inner clamping body for interference fit with the end band to radially compress the end band against the inner wall of the mounting hole.

[0023] As a further improvement, the jack assembly further includes an end-side pressing body fixed on the rear sleeve and axially pressing the turned-out portion, the inner support body is integrally or fixedly connected with the end-side pressing body, an arc-shaped contact wall with an arc transition is provided between the inner wall of the mounting hole and the end face of the mating end, and an arc-shaped transition portion adapted to the arc-shaped contact wall is provided between the turned-out portion and the corresponding end strip.

[0024] As a further improvement, a transition pressing body is provided between the end-side pressing body and the inner support body, an arc-shaped pressing wall adapted to the arc-shaped transition portion is provided on the transition pressing body, and the arc-shaped pressing wall and the arc-shaped contact wall jointly clamp the arc-shaped transition portion of the crown spring.

[0025] As a further improvement, the jack assembly further includes an end-side pressing body fixed on the rear sleeve and axially pressing the turned-out portion, the inner support body is integrally or fixedly connected with the end-side pressing body, the jack assembly further includes a sheath, the sheath includes a connecting portion for sleeving outside the rear sleeve and fixedly connected with the rear sleeve, the sheath further includes a stopping portion that turns inward at an axial end of the connecting portion, the stopping portion is located on a side of the end-side pressing body away from the turned-out portion and is in axial stopping cooperation with the end-side pressing body, and the end-side pressing body is fixed on the rear sleeve through the sheath.

[0026] As a further improvement, a slot for the stopping portion to be embedded is provided on a side of the end-side pressing body away from the turned-out portion, and a side wall of the end-side pressing body away from the turned-out portion is aligned with a side wall of the stopping portion away from the turned-out portion.

[0027] As a further improvement, the jack assembly further includes an end-side pressing body fixed on the rear sleeve and axially pressing the turned-out portion, the inner support body is integrally or fixedly connected with the end-side pressing body, a sleeve is fixedly or integrally connected to the outside of the end-side pressing body, and the sleeve is sleeved and fixed on the outside of the rear sleeve.

[0028] As a further improvement, the axial end wall of the inner support body is an arc-shaped wall.

[0029] The beneficial effects are as follows: The connector provided by the present utility model is an improvement over the prior art. Compared with the prior art, an inner support body is provided in the jack assembly of this connector. During the assembly process, the inner support body can outwardly expand the end strip of the crown spring at a position close to the mating end inside the crown spring, so that the turned-out portions on the crown spring can fully expand outward, so that the turned-out portions can all fit on the end face of the mating end, effectively ensuring a sufficient contact area between the crown spring and the rear sleeve, enabling a better current-carrying capacity between the crown spring and the rear sleeve, and being beneficial to the transmission of large currents. And the inner support body can also have a correcting effect on the throat circle part in the middle of the crown spring, improving the roundness of the throat circle part and improving the good contact and conductive performance between the crown spring and the pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of the jack assembly in Embodiment 1 of the connector in the present utility model;

[0031] Figure 2 It is a schematic structural diagram of the cooperation between the jack assembly and the pin in Embodiment 1 of the connector in the present utility model;

[0032] Figure 3 It is a schematic diagram of the manufacturing process of the crown spring in Embodiment 1 of the connector in the present utility model;

[0033] Figure 4 It is a schematic structural diagram of the crown spring in Embodiment 1 of the connector in the present utility model;

[0034] Figure 5 It is a partial cross-sectional view of the pin assembly in Embodiment 1 of the connector in the present utility model;

[0035] Figure 6 It is a partial structural diagram of the pin assembly in Embodiment 2 of the connector in the present utility model;

[0036] Figure 7 It is a partial structural diagram of the pin assembly in Embodiment 4 of the connector in the present utility model;

[0037] Figure 8 It is a partial structural diagram of the pin assembly in Embodiment 6 of the connector in the present utility model;

[0038] Figure 9 It is a partial structural diagram of the pin assembly in Embodiment 7 of the connector in the present utility model;

[0039] Figure 10 It is a cross-sectional view of the cooperation between the jack assembly and the pin in Embodiment 8 of the connector in the present utility model;

[0040] Figure 11 It is a partial cross-sectional view of the cooperation between the jack assembly and the pin in Embodiment 8 of the connector in the present utility model;

[0041] Figure 12 It is a schematic structural diagram of the pin shaft in Embodiment 8 of the connector in the present utility model;

[0042] Figure 13 It is a schematic structural diagram of the elastic member in Embodiment 8 of the connector in the present utility model.

[0043] Explanation of reference numerals:

[0044] 1. Rear sleeve; 11. Insertion end; 12. Mounting hole; 13. Assembly hole; 14. Embedded groove; 2. Crown spring; 21. End strip; 22. Connecting strip; 23. Flanged portion; 24. Arc transition portion; 3. Pin; 31. Inner hole of the pin; 4. Inner sleeve; 41. Inner support body; 42. Transition pressing body; 43. End-side pressing body; 44. Sleeve; 5. Sheath; 51. Connecting portion; 52. Stopping portion; 53. Embedded groove; 6. Pin shaft; 61. Limiting section; 62. Assembly section; 63. Mounting section; 64. Elastic hook; 65. Limiting step; 66. Conical surface; 7. Elastic member; 71. Fixed section; 72. Contact section; 721. Reed; 722. Contact protrusion; 73. Flange; 74. Stopping wall; 75. Force-applying wall; 76. Matching step. Detailed implementation mode

[0045] The following further describes the present utility model in detail with reference to embodiments.

[0046] To solve the problems in the prior art, the basic concept of the present utility model is to set an inner support body, so that during assembly, the inner support body can radially expand the crown spring, ensuring that the flanged portions on the elastic body can all reach between the end-side pressing body and the insertion end and be clamped, enabling sufficient contact area between the crown spring and the rear sleeve to ensure good current-carrying capacity and facilitating the transmission of large currents.

[0047] Specific embodiment 1 of the connector provided by the present utility model:

[0048] The connector includes a housing and a jack assembly installed in the housing.

[0049] See attached Figure 1 and attached Figure 2 , the jack assembly includes a rear sleeve 1 and a crown spring 2. The rear sleeve 1 is cylindrical as a whole. One axial end of the rear sleeve 1 is an insertion end 11, and the insertion end 11 is provided with a mounting hole 12. The crown spring 2 is located in the mounting hole 12.

[0050] See attached Figure 3 and attached Figure 4, the crown spring 2 is made of a metal sheet. The specific processing process is as follows: First, a plurality of slit-shaped long holes are punched out on the metal sheet, so that end bands 21 are formed at both ends in the width direction of the metal sheet, and a connecting strip 22 connected to both end bands 21 is formed in the middle. At the same time, a toothed structure is punched out on one of the end bands 21; then the toothed structure is vertically bent to one side, and then the metal sheet is curled into a cylindrical shape with the original width direction as the axis direction, and the toothed structure faces the outside of the cylinder. In order to ensure the radial deformation ability of the crown spring 2, the two ends in the length direction of the metal sheet are curled and close to each other but not fixedly connected; finally, the cylinder is waist-reduced, so that the connecting strip 22 in the middle of the cylinder is recessed inward to form a throat circle structure, so that the elastic contact can be formed after the pin 3 is inserted. Thus, the processing of the crown spring 2 is completed.

[0051] After the crown spring 2 is formed, see the appendix Figure 4 , the part of the end band 21 and the connecting strip 22 is the main body part, and the toothed structure folded outward is the outward turning part 23. An arc-shaped transition part 24 is formed between the outward turning part 23 and the corresponding end band 21. After being assembled, the main body part of the crown spring 2 is located in the mounting hole 12, and the outer wall of the end band 21 fits against the inner wall of the mounting hole 12. The outward turning part 23 is located outside the mounting hole 12 and buckles on the end wall of the mating end 11.

[0052] See the appendix Figure 5 , an arc-shaped contact wall with an arc-shaped transition is provided between the inner wall of the mounting hole 12 and the end wall of the mating end 11. The shape of the arc-shaped transition part 24 is adapted to the shape of the arc-shaped contact wall.

[0053] The jack assembly further includes a pressing structure. The pressing structure includes an inner sleeve 4 that is integrally annular. The inner sleeve 4 includes an inner support body 41, a transition pressing body 42, and an end-side pressing body 43 that are integrally formed. In other embodiments, it can also be separately manufactured and fixed together by welding. The inner hole of the inner support body 41 constitutes an insertion hole for the pin 3 to pass through. One end wall in the axial direction of the end-side pressing body 43 is an end-side pressing wall that fits against and presses the outward turning part 23. The outer diameter of the inner support body 41 is smaller than the outer diameter of the end-side pressing body 43, that is, the inner support body 41 is connected to the inner side of the end-side pressing body 43. The outer peripheral wall of the inner support body 41 is a circular tube surface structure, and there is an arc-shaped transition between the outer peripheral wall of the inner support body 41 and the end-side pressing wall. The arc-shaped transition part constitutes the transition pressing body 42.

[0054] After the crown spring 2 is inserted into the mounting hole 12, one end of the inner support body 41 away from the end-side pressing body 43 is inserted into the inner side of the crown spring 2. After the inner support body 41 is installed in place, the transition pressing body 42 reaches the position of the arc transition portion 24, and the end-side pressing wall on the end-side pressing body 43 reaches the side of the outward-turning portion 23 of the crown spring 2 axially away from the mating end 11. The arc contact wall, the arc transition portion 24 and the transition pressing body 42 are provided to ensure sufficient contact between the elastic body and the rear sleeve 1 and prevent stress concentration caused by sharp corners. In other embodiments, the arc contact wall, the arc transition portion 24 and the transition pressing body 42 may not be provided. In this embodiment, the inner wall of the rear sleeve 1 and the mating end 11 are transitioned at a right angle, and the outward-turning portion 23 and the main body portion, and the end-side pressing wall and the outer wall of the inner support body 41 are also transitioned at a right angle.

[0055] The difference between the inner diameter of the mounting hole 12 and the outer diameter of the inner support body 41 is less than twice the radial thickness of the end band 21. The inner support body 41 constitutes an inner pressing body for press-fitting with the main body portion so as to press the main body portion against the inner wall of the mounting hole 12 in the radial direction. After the inner support body 41 is installed, on the one hand, the main body portion of the crown spring 2 can be closely attached to the inner wall of the mounting hole 12, and on the other hand, the inner support body 41 is fixed relative to the rear sleeve 1 through the interference fit between the inner support body 41 and the crown spring 2 and between the crown spring 2 and the rear sleeve 1.

[0056] After the inner support body 41 is assembled in place, it can provide a pressing force to the transition pressing body 42 and the end-side pressing body 43, so that the end-side pressing body 43 is indirectly fixed on the rear sleeve 1. The end-side pressing wall of the end-side pressing body 43 axially presses the outward-turning portion 23 of the crown spring 2 against the end wall of the mating end 11 of the rear sleeve 1. At the same time, the outer wall of the transition pressing body 42 presses the arc transition portion 24 against the arc contact wall, and can keep a pressing force between the outward-turning portion 23 and the mating end 11 of the rear sleeve 1 and between the arc transition portion 24 and the arc contact wall. In order to ensure sufficient fastening force between the inner support body 41, the crown spring 2 and the rear sleeve 1, the inner support body 41 needs to have a sufficient axial length. In this embodiment, the axial length of the inner support body 41 is equal to the axial length of the corresponding end band 21. In other embodiments, the axial length of the inner support body 41 may also be greater than the axial length of the corresponding end band 21.

[0057] There is a large contact area between the crown spring 2 and the rear sleeve 1, and it can continuously maintain good contact under the action of the pressing force, so that there is a good current-carrying capacity between the crown spring 2 and the rear sleeve 1. And the interference fit among the inner support body 41, the crown spring 2 and the rear sleeve 1 also fixes the crown spring 2 relative to the rear sleeve 1, thereby preventing wear caused by the reciprocating axial movement of the crown spring 2 in the mounting hole 12. During the process of assembling the inner support body 41, the outward-turning portion 23 on the crown spring 2 can also play a role in limiting the position, preventing the crown spring 2 from being pushed by the inner support body 41 and moving into the interior of the mounting hole 12.

[0058] During the assembly process, when the inner support body 41 is inserted into the crown spring 2, the inner support body 41 can open the corresponding end band 21, so that the corresponding end band 21 of the crown spring 2 is in a perfect circular structure, ensuring that the outward-turned portion 23 of the crown spring 2 can be radially moved to the end wall of the plug-in end 11 of the rear sleeve 1, and after the end side pressing body 43 is in place, the outward-turned portion 23 can be pressed against the end wall of the plug-in end 11, ensuring sufficient contact area between the crown spring 2 and the rear sleeve 1. The inner support body 41 can open the end band 21 of the crown spring 2, and can also affect the middle part of the crown spring 2, and also play a role in correcting the shape of the middle part of the crown spring 2, thereby improving the roundness of the throat circle in the middle part of the crown spring 2 and improving the contact and conductive effect with the pin 3.

[0059] The end band 21 of the crown spring 2 away from the outward-turned portion 23 extends into the mounting hole 12 and has an axial gap with the bottom wall of the mounting hole 12 to ensure that the end of the crown spring 2 can be deformed in the axial direction when radially squeezed by the pin 3, thereby preventing the crown spring 2 from being damaged by excessive squeezing force.

[0060] The compression structure also includes a sheath 5, see the attached Figure 2 and attached Figure 5 The sleeve 5 includes a cylindrical connecting portion 51 and a stopper 52 located at one axial end of the connecting portion 51, and the stopper 52 is folded inwardly relative to the connecting portion 51. During assembly, the plug-in end 11 is inserted into the connecting portion 51 from the end of the connecting portion 51 away from the stopper 52, and after being inserted into place, the connecting portion 51 and the rear sleeve 1 are fixed together by crimping. In other embodiments, the connecting portion 51 can also be fixedly connected to the sleeve 5 by welding or threaded connection. After the sleeve 5 is assembled, the stopper 52 is located on the side of the end side clamping body 43 of the inner sleeve 4 away from the plug-in end 11 and cooperates with the end side clamping body 43 along the axial stop to prevent the inner sleeve 4 from loosening. The end side clamping body 43 in this embodiment is also indirectly fixed to the rear sleeve 1 through the sleeve 5.

[0061] A side of the end side pressing body 43 away from the outer turning portion 23 is provided with an embedding groove 53 for the stopper 52 to be embedded in, and a side wall of the end side pressing body 43 away from the outer turning portion 23 is aligned with a side wall of the stopper 52 away from the outer turning portion 23 to ensure aesthetics and prevent the appearance of a sharp point. In other implementations of this embodiment, the embedding groove may not be provided on the end side pressing body.

[0062] Specific embodiment 2 of the connector provided by the utility model:

[0063] This embodiment is based on embodiment 1, and the difference from embodiment 1 is that, see attached Figure 6 In this embodiment, the protective sleeve 5 is not provided, and the inner sleeve 4 is fixed only by the interference fit between the inner sleeve 4 and the crown spring 2, and between the crown spring 2 and the rear sleeve 1. In this embodiment, the end side pressing body 43 is fixed to the rear sleeve 1 only by the inner support body 41.

[0064] Specific Embodiment 3 of the connector provided by the present utility model:

[0065] This embodiment is based on Embodiment 1. The difference from Embodiment 1 is that in this embodiment, the inner support body no longer undergoes interference fit with the mounting hole by extruding the corresponding end band. The inner support body only spreads the corresponding end band of the crown spring and makes it adhere to the inner wall of the mounting hole. The inner support body in this embodiment can still play a role in spreading the crown spring, so that the outer turned parts can all be pressed by the end-side pressing body on the mating end.

[0066] In this embodiment, the pressing forces of the end-side pressing body and the transition pressing body are provided by the sheath. The end-side pressing body is only fixed to the rear sleeve through the sheath.

[0067] Specific Embodiment 4 of the connector provided by the present utility model:

[0068] This embodiment is based on Embodiment 1. The difference from Embodiment 1 is that, referring to the appendix Figure 7 , in this embodiment, the sheath 5 is not provided. The pressing structure in this embodiment further includes a sleeve 44. The sleeve 44 is sleeved outside the rear sleeve 1 and fixedly connected to the rear sleeve 1. Specifically, the sleeve 44 can be connected to the sheath 5 by welding or crimping. One axial end of the sleeve 44 is integrally connected to the outside of the end-side pressing body 43. In other embodiments, the sleeve 44 can also be fixedly welded to the end-side pressing body 43.

[0069] In this embodiment, the inner support body 41 still undergoes interference fit with the mounting hole by extruding the corresponding end band 21. In this embodiment, the end-side pressing body 43 is fixed to the rear sleeve 1 through the sleeve 44 and the inner support body 41.

[0070] Specific Embodiment 5 of the connector provided by the present utility model:

[0071] This embodiment is based on Embodiment 4. The difference from Embodiment 4 is that in this embodiment, the inner support body no longer has an interference fit with the crown spring. The inner support body only spreads the corresponding end band of the crown spring and makes it adhere to the inner wall of the mounting hole. The inner support body in this embodiment can still play a role in spreading the crown spring, so that the outer turned parts can all be pressed by the end-side pressing body on the mating end. In this embodiment, the end-side pressing body provides the pressing force for the outer turned part through the sleeve, and the end-side pressing body is only fixed to the rear sleeve through the sleeve.

[0072] Specific Embodiment 6 of the connector provided by the present utility model:

[0073] This embodiment is based on Embodiment 1. The difference from Embodiment 1 is that, referring to the appendix Figure 8In this embodiment, the protective sleeve 5 is not provided, and the inner sleeve 4 only includes the inner support body 41, which is still fitted with the mounting hole 12 by extruding the corresponding end band 21. The inner support body 41 in this embodiment can still play the role of opening the crown spring 2, so that the outer turning part 23 can be completely buckled onto the end surface of the plug-in end 11.

[0074] Specific embodiment 7 of the connector provided by the utility model:

[0075] This embodiment is based on embodiment 1, and the difference from embodiment 1 is that, see attached Figure 9 In this embodiment, the inner support body 41 and the end side pressing body 43 are independently arranged, and the inner support body 41 is still assembled with the mounting hole 12 by extruding the corresponding end band 21 through interference fit.

[0076] In this embodiment, the compression structure further includes a sleeve 44, which is sleeved outside the rear sleeve 1 and fixedly connected to the rear sleeve 1. Specifically, the sleeve 44 can be connected to the sheath 5 by welding or crimping, and one axial end of the sleeve 44 is integrally connected to the outer side of the end side compression body 43. In other embodiments, the sleeve 44 can also be welded and fixed to the end side compression body 43. The end side compression body 43 is fixed to the rear sleeve 1 only by the sleeve 44.

[0077] The inner support body 41 in this embodiment can still play the role of opening the crown spring 2 so that the outward-turned portion 23 can be completely buckled onto the end surface of the insertion end 11 .

[0078] Specific embodiment 8 of the connector provided by the utility model:

[0079] This embodiment is based on embodiment 1, and the difference from embodiment 1 is that, see attached Figure 10 and attached Figure 11 A pin shaft 6 is coaxially arranged in the mounting hole 12. The plug pin 3 is used to be inserted into the mounting hole 12, and an inner pin hole 31 is arranged at the axial end of the plug pin 3, and the pin shaft 6 is inserted into the inner pin hole 31, and the inner pin hole 31 is a structure of equal diameter.

[0080] An elastic member 7 is provided between the pin shaft 6 and the hole wall of the pin inner hole 31, so as to connect the pin 3 with the pin shaft 6 and the back sleeve 1 after the pin 3 is inserted into the back sleeve 1. The elastic member 7 can be provided on the pin shaft 6 or inside the pin 3. In this embodiment, the elastic member 7 is located on the pin shaft 6.

[0081] See attached Figure 12, the pin shaft 6 includes a limiting section 61, an assembly section 62, and an installation section 63, where the assembly section 62 is located between the limiting section 61 and the installation section 63. A mounting hole 13 axially penetrating through the rear sleeve 1 is provided at the center of the bottom wall of the mounting hole 12. The installation section 63 is located within the mounting hole 13 and forms an interference fit region with the inner wall of the mounting hole 13. The interference fitting of the pin shaft 6 with the mounting hole 13 is to ensure better alignment of the pin shaft 6 with the elastic member 7 and the inner hole 31 of the pin. An elastic hook 64 is provided at the end of the installation section 63. A stepped structure is provided at one end of the mounting hole 13 away from the mounting hole 12, and the stepped surface of the stepped structure constitutes a mating wall that axially abuts and cooperates with the elastic hook 64. The elastic hook 64 and the mating wall constitute an anti-retreat structure, and the anti-retreat structure can be used for axially limiting the pin shaft 6 to prevent the pin shaft 6 from disengaging from the mouth of the mounting hole 12.

[0082] See the appendix Figure 11 and in combination with the appendix Figure 13 , the elastic member 7 is sleeved on the pin shaft 6. The elastic member 7 includes an axially connected fixed section 71 and a contact section 72. The fixed section 71 is annular. The contact section 72 includes a plurality of spring pieces 721 evenly distributed in the circumferential direction. The length direction of the spring piece 721 is the same as the axis of the elastic member 7. One end of the spring piece 721 is connected to the fixed section 71, and the other end of the spring piece 721 is suspended. A contact protrusion 722 is provided on the outer side of the end of the spring piece 721 away from the fixed section 71. A guiding inclined surface or a guiding arc surface is provided on the contact protrusion 722. The provision of the contact protrusion 722 can increase the deformation amount of the spring piece 721 when it is compressed and improve the resilience of the spring piece 721. The contact protrusion 722 can be a wedge-shaped structure or a hemispherical structure.

[0083] An embedding groove 14 for installing the elastic member 7 is formed in the bottom wall of the mounting hole 12. The fixed section 71 of the elastic member 7 is embedded into the embedding groove 14, and the contact section 72 of the elastic member 7 is located outside the embedding groove 14. The outer wall of the fixed section 71 of the elastic member 7 is in interference fit with the inner wall of the embedding groove 14, so that the elastic member 7 is fixedly connected to the rear sleeve 1 and better electrical conduction is achieved. In this embodiment, the interference fit structure between the elastic member 7 and the embedding groove 14 constitutes the fixed connection structure between the elastic member 7 and the rear sleeve 1. A radially outwardly convex annular flange 73 is provided on the outer side of the elastic member 7. The flange 73 is located between the fixed section 71 and the contact section 72. The two side walls of the flange 73 in the axial direction respectively constitute a stop wall 74 for being in abutting fit with the bottom wall of the mounting hole 12 and a force application wall 75 for providing a force application position for the force application tool when the fixed section is loaded into the embedding groove 14. During the installation process of the elastic member 7, it is necessary to install the elastic member 7 from the mounting hole 12 and align the fixed section 71 of the elastic member 7 with the embedding groove 14, and then use a tubular force application tool to abut against the force application wall 75 of the flange 73. After the force application tool applies force to the flange 73, the fixed section 71 of the elastic member 7 is loaded into the embedding groove 14. After the stop wall 74 of the flange 73 is in abutting fit with the bottom wall of the mounting hole 12, the fixed section 71 is installed in place. At this time, the stop wall 74 is in close fit with the bottom wall of the mounting hole 12, thereby increasing the contact area between the elastic member 7 and the rear sleeve 1 and improving the current-carrying capacity.

[0084] The assembly section 62 is provided with a limit step 65, and the step surface of the limit step 65 faces away from the limit section 61. The elastic member 7 is provided with a mating step 76 for mating with the limit step 65, and the limit step 65 and the mating step 76 are in axial abutting fit. The areas of the pin shaft 6 corresponding to the elastic member 7 are all assembly sections 62. The assembly section 62 and the elastic member 7 are in clearance fit or transition fit in the radial direction for easy assembly. When assembling the contact component, first install the elastic member 7 on the rear sleeve 1, and then install the pin shaft 6. During the installation process of the pin shaft 6, the elastic hook 64 contracts inward. After the pin shaft 6 is installed in place, the elastic hook 64 pops out outward and mates with the mating wall. At the same time, the limit step 65 and the mating step 76 also form a fit to form limits in both directions of the axis of the pin shaft 6, ensuring the installation reliability of the pin shaft 6. After the pin shaft 6 is installed in place, due to the fit between the limit step 65 and the mating step 76, the elastic member 7 is also limited in the axial direction, improving the stability of the elastic member 7.

[0085] At the assembly section 62, a deformation space for the elastic member 7 to deform after being compressed is provided. The deformation space is specifically a deformation groove, and the position of the deformation groove corresponds to the contact section 72 of the elastic member 7. In this embodiment, a conical surface 66 is provided at the position corresponding to the contact section 72 of the assembly section 62 and the elastic member 7. The small-diameter end of the conical surface 66 is located at the connection between the reed piece 721 and the fixed section 71, and the large-diameter end of the conical surface 66 corresponds to the end of the reed piece 721 away from the fixed section 71. A stepped structure is formed between the conical surface 66 and the limiting section 61, and the area surrounded by the conical surface 66 and the stepped surface of the stepped structure constitutes the deformation groove. The conical surface 66 can make the cross-sectional dimension of the assembly section 62 change smoothly, preventing stress concentration on the reed piece 721.

[0086] The pin 3 includes a limit-fitting section and a contact-fitting section. After the contact component and the mating component are inserted into each other, the position of the limit-fitting section corresponds to that of the limiting section 61, and the outer diameter of the limiting section 61 is adapted to the inner diameter of the limit-fitting section to prevent the pin shaft 6 and the pin 3 from relatively deflecting. The above-mentioned adaptation means that the outer diameter of the limiting section 61 is equal to the inner diameter of the limit-fitting section, so that the limiting section 61 can just be inserted into the limit-fitting section. At this time, the outer wall of the limiting section 61 is in contact with the inner wall of the limit-fitting section, and no relative deflection can occur between the pin shaft 6 and the pin 3; the adaptation can also mean that the outer diameter of the limiting section 61 is slightly smaller than the limit-fitting section, so that the limiting section 61 and the limit-fitting section are in clearance fit, facilitating the mating of the mating component and the contact component. However, when the pin shaft 6 and the pin 3 are about to deflect, both axial ends of the limiting section 61 can be rigidly supported by the inner wall of the limit-fitting section, rather than the elastic support of the elastic member 7 in the prior art. Therefore, relative deflection between the pin shaft 6 and the pin 3 can also be prevented.

[0087] After the mating component and the contact component are inserted into each other, the inner wall of the contact-fitting section presses on the outside of the contact protrusion 722 on the reed piece 721, forcing the reed piece 721 to bend inwardly, so that a sufficient pressing force is maintained between the reed piece 721 and the inner wall of the contact-fitting section, ensuring good electrical conduction. In this embodiment, only the end position of the reed piece 721 of the elastic member 7 extends into the inner hole 31 of the pin and contacts a smaller area at the end of the pin 3, which can make the contact-fitting section shorter, so that the limit-fitting section can be longer. Correspondingly, the limiting section 61 can be longer, thereby enhancing the effect of preventing relative deflection between the pin shaft 6 and the pin 3.

[0088] Since the inner hole 31 of the pin is of equal-diameter structure, when the mating starts, that is, when the limiting section 61 just enters the inner hole 31 of the pin, the limiting section 61 can form a guiding fit with the inner hole 31 of the pin to ensure smooth mating. Chamfers or rounded corners are provided at the axial end positions of the pin shaft 6 and on the inner and outer sides of the axial end of the pin 3 to ensure smooth mating.

[0089] In the above embodiments, the assembly hole is machined into a through hole to facilitate the machining of the mating wall. In other embodiments, the assembly hole can also be machined into a blind hole. In this embodiment, a ring groove is machined on the inner wall of the mounting hole, and the axial side wall of the ring groove can serve as the mating wall to cooperate with the elastic hook.

[0090] In the above embodiments, the elastic hook can improve the convenience of pin installation. In other embodiments, the elastic hook can be omitted. In this embodiment, the anti-retreat structure includes a nut installed at the end of the installation section. After the pin is inserted into the installation hole, the nut is installed to form a stop fit between the nut and the mating wall to achieve the anti-retreat of the pin. In other embodiments, the end of the installation section can also pass through the installation hole and be welded to the socket member, and the welding structure constitutes the leg structure.

[0091] When the anti-retreat structure, the limit step and the mating step are provided, the pin and the assembly hole can also be in clearance fit. When the pin and the assembly hole are in interference fit, the anti-retreat structure can also be omitted.

[0092] In the above embodiments, by using the cooperation between the limit step and the mating step, the pin can be used to limit the elastic member, improve the stability of the elastic member, and prevent the elastic member from loosening due to vibration. In an environment with less vibration, the pin can also be omitted to limit the elastic member.

[0093] In the above embodiments, the assembly section and the elastic member are in clearance or transitional fit to ensure the convenience of assembly. In other embodiments, the assembly section and the elastic member can also be in interference fit.

[0094] In other embodiments, the contact protrusion can be omitted on the reed. In this embodiment, the inner wall of the inner hole of the pin directly presses against the outer wall of the reed.

[0095] In the above embodiments, at least two reeds in the contact section are required. The reeds are relatively easy to deform and have good elasticity to ensure better contact between the elastic member and the pin member after insertion. In other embodiments, the contact section can also be a drum-shaped spring washer ring fixedly connected to the fixed section. The middle of the drum-shaped spring washer ring bulges outwards to cooperate with the inner wall of the contact fit section. The drum-shaped spring washer ring is a prior art and will not be elaborated here. In this embodiment, an avoidance groove for cooperating with the drum-shaped spring washer ring is provided on the inner wall of the contact fit section to prevent the drum-shaped spring washer ring from being damaged due to excessive pressure.

[0096] In the above embodiments, the provision of the convex edge facilitates the assembly of the elastic member and can also increase the contact area between the elastic member and the jack member. In other embodiments, the convex edge may not be provided, and only a stepped structure is provided on the outer wall of the elastic member for installing the elastic member. Or in other embodiments, the elastic member is connected to the bottom wall of the jack by welding, and there is no need to provide a convex edge anymore. In this embodiment, the welding structure between the elastic member and the bottom wall of the jack constitutes a fixed connection structure.

[0097] In the above embodiments, by providing the fixed connection structure between the jack member and the elastic member, the connection strength between the elastic member and the pin member can be improved, ensuring better contact between the elastic member and the pin member and ensuring the current-carrying capacity. In other embodiments, the fixed connection structure can also be provided between the elastic member and the pin shaft, for example, by making the elastic member and the pin shaft in interference fit or by welding. In this embodiment, the current flow path is from the elastic member to the pin shaft and then to the jack member.

[0098] In the above embodiments, by providing a fitting groove on the jack member for embedding the elastic member, the contact area between the elastic member and the jack member can be increased. In other embodiments, the fitting groove may not be provided. In this embodiment, a radially outward flanging can be provided at one axial end of the elastic member, and the flanging is made to fit the bottom wall of the jack to increase the contact area.

[0099] In the above embodiments, the fixed section of the elastic member can more conveniently fix the connection between the elastic member and the pin shaft or the jack member. In other embodiments, the elastic member and the pin shaft or the jack member can also be connected in a non-fixed manner. In this embodiment, the elastic member may only include a contact section, and specifically, the elastic member can be a drum spring-shaped elastic washer or an elastic contact finger. In this embodiment, the elastic member is directly installed in the deformation groove. In this embodiment, an avoidance groove for cooperating with the drum spring-shaped elastic washer or the elastic contact finger is provided on the inner wall of the contact and cooperation section to prevent the drum spring-shaped elastic washer from being damaged due to excessive compression.

[0100] In the above embodiments, by providing the limiting section at the end of the pin shaft, the limiting section can be made longer, improving the effect of preventing the deviation between the pin member and the pin shaft. In other embodiments, the assembly section and the limiting section can be interchanged. In this embodiment, a deformation groove is provided in the assembly section, and the elastic member is a drum spring-shaped elastic washer provided in the deformation groove. In this embodiment, the contact and cooperation section and the limiting and cooperation section are also interchanged accordingly, and a relief groove for cooperating with the drum spring-shaped elastic washer is provided on the inner wall of the contact and cooperation section to prevent the drum spring-shaped elastic washer from being damaged due to excessive compression.

[0101] In the above embodiments, by setting the deformation groove in the form of a conical surface, stress concentration of the reed can be avoided. In other embodiments, the deformation groove can also be an annular groove with a constant cross-section. The deformation groove in this embodiment can also allow the reed to be compressed and deformed.

[0102] In other embodiments, the pin shaft can be a stepped shaft, and the outer diameter of the assembly section is smaller than that of the limiting section, so that a shoulder structure is formed between the assembly section and the limiting section. The space between the shoulder structure and the assembly section constitutes a deformation space. In this embodiment, in order to enable the contact section of the elastic member to deform radially, it is necessary to expand the contact section, and the outer peripheral surface of the contact section is basically aligned with the outer peripheral surface of the limiting section, and an annular space for the contact section to deform is left between the inner peripheral surface of the contact section and the assembly section.

[0103] Specific embodiments of the jack assembly provided by the present utility model:

[0104] The jack assembly is the jack assembly in any one of Embodiments 1-8 of the above-mentioned connector, which will not be elaborated here.

[0105] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still make modifications to the technical solutions described in the foregoing embodiments without creative efforts, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A jack assembly, comprising a rear sleeve (1), wherein one axial end of the rear sleeve (1) is an insertion end (11) and is provided with a mounting hole (12), wherein a crown spring (2) is provided in the mounting hole (12), wherein the crown spring (2) comprises end bands (21) at both ends and a connecting strip (22) connected between the end bands (21), wherein one of the end bands (21) is connected with an outwardly turned portion (23) folded outwardly and buckled onto the end surface of the insertion end (11), wherein: The jack assembly further comprises an inner support body (41) which is arranged on the inner side of the end band (21) connected to the outward-turned portion (23) and expands the end band (21) into a perfect circular structure; the inner support body (41) is provided with an insertion hole for the insertion pin (3) to pass through; the inner support body (41) is independently arranged and is interference-fitted with the mounting hole (12) by squeezing the end band (21); or the jack assembly further comprises an end side pressing body (43) which is fixed on the rear sleeve (1) and presses the outward-turned portion (23) in the axial direction; the inner support body (41) and the end side pressing body (43) are integrally or fixedly connected.

2. The jack assembly according to claim 1, characterized in that: The axial length of the inner support body (41) is greater than or equal to the axial length of the supported end band (21).

3. The jack assembly according to claim 1 or 2, characterized in that: The jack assembly also includes an end side pressing body (43) fixed on the rear sleeve (1) and pressing the outward-turned portion (23) in the axial direction; the inner support body (41) is integrally formed with or fixedly connected to the end side pressing body (43); the difference between the inner diameter of the mounting hole (12) and the outer diameter of the inner support body (41) is less than twice the radial thickness of the end band (21); the inner support body (41) is configured as an inner side pressing body for interference fit with the end band (21) so as to press the end band (21) in the radial direction against the inner wall of the mounting hole (12).

4. The jack assembly according to claim 1 or 2, characterized in that: The jack assembly also includes an end side pressing body (43) fixed on the rear sleeve (1) and pressing the outward-turned portion (23) in the axial direction, the inner support body (41) and the end side pressing body (43) are integrally or fixedly connected, an arcuate contact wall with an arcuate transition is provided between the inner wall of the mounting hole (12) and the end surface of the plug-in end (11), and an arcuate transition portion (24) adapted to the arcuate contact wall is provided between the outward-turned portion (23) and the corresponding end band (21).

5. The jack assembly according to claim 4, characterized in that: A transitional compression body (42) is provided between the end side compression body (43) and the inner support body (41), and an arc-shaped compression wall adapted to the arc-shaped transition portion (24) is provided on the transitional compression body (42), and the arc-shaped compression wall and the arc-shaped contact wall jointly clamp the arc-shaped transition portion (24) of the crown spring (2).

6. The jack assembly according to claim 1 or 2, characterized in that: The jack assembly also includes an end side pressing body (43) fixed on the rear sleeve (1) and pressing the outward-turned portion (23) in the axial direction, the inner support body (41) is integrally connected with or fixedly connected to the end side pressing body (43), and the jack assembly also includes a sleeve (5), the sleeve (5) includes a connecting portion (51) for being sleeved outside the rear sleeve (1) and fixedly connected to the rear sleeve (1), the sleeve (5) also includes a stopper (52) located at one axial end of the connecting portion (51) and turned inward, the stopper (52) is located on a side of the end side pressing body (43) away from the outward-turned portion (23) and is axially stoppered with the end side pressing body (43), and the end side pressing body (43) is fixed to the rear sleeve (1) through the sleeve (5).

7. The jack assembly according to claim 6, characterized in that: A groove (53) for the stopper (52) to be embedded is provided on one side of the end side pressing body (43) away from the outward-turned portion (23), and a side wall of the end side pressing body (43) away from the outward-turned portion (23) is aligned with a side wall of the stopper (52) away from the outward-turned portion (23).

8. The jack assembly according to claim 1 or 2, characterized in that: The jack assembly also includes an end side pressing body (43) fixed on the rear sleeve (1) and pressing the outwardly turned portion (23) in the axial direction, the inner support body (41) is integrally connected or fixedly connected to the end side pressing body (43), the outer side of the end side pressing body (43) is fixedly connected or integrally connected with a sleeve (44), and the sleeve (44) is sleeved and fixed on the outer side of the rear sleeve (1).

9. The jack assembly according to claim 1 or 2, characterized in that: The axial end wall of the inner support body (41) is an arc-shaped wall.

10. A connector comprising a housing and a jack assembly, characterized in that: The jack assembly is the jack assembly described in any one of claims 1-9.

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