Threaded retaining structure of circular connector

Abstract

The utility model discloses a thread retaining structure of a circular connector, which is characterized in that a first female end retaining piece and a first male end retaining piece which extend along the axial direction are respectively arranged on the axial end surfaces, deviating from each other, of a female end convex baffle ring on a female end plastic body and a male end convex baffle ring on a male end plastic body; a second female end stop piece and a second male end stop piece which extend axially are arranged on a female end inward-protruding stop ring on the inner side of the female end interlocking nut and a male end inward-protruding stop ring on the inner side of the male end interlocking nut respectively, and the female end inward-protruding stop ring and the female end outward-protruding stop ring make close contact to provide resistance for rotation of the second female end stop piece. According to the utility model, the locking nut of the circular connector can be prevented from being unlocked in a high-frequency vibration environment, and the conduction stability of the terminal of the circular connector is improved.

Description

Technical Field

[0001] The utility model relates to a connector, in particular to a thread stop structure of a circular connector. Background Art

[0002] The circular connector product consists of a female connector 1 and a male connector 2. When in use, the male connector and the female connector are plugged together to achieve contact and conduction between the male terminal 24 and the female terminal 14. In order to prevent the female connector and the male connector from loosening due to external force or vibration during normal conduction and transmission, female locking nuts and male locking nuts are generally provided on the female connector and the male connector. The female locking nuts and the male locking nuts are threadedly connected when the female connector and the male connector are plugged together to clamp the plastic bodies of the female connector and the male connector, thereby achieving resistance to external forces and reducing the risk of the female connector and the male connector being disengaged during normal use. Most of the common circular connector products on the market currently do not have a locking nut retaining structure. When used in a high-vibration environment, the male locking nuts and the female locking nuts are subjected to high-frequency vibrations, which will cause relative rotation and loosening, resulting in the risk of product unlocking. Utility Model Content

[0003] In order to make up for the above shortcomings, the utility model provides a circular connector thread stop structure, which can prevent the locking nut of the circular connector from being unlocked in a high-frequency vibration environment, thereby improving the conductive stability of the circular connector terminal.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a circular connector thread stop structure, including a female plastic body, a female locking nut, a male plastic body and a male locking nut, a circle of female convex retaining ring is provided on the circumferential outer wall of the female plastic body, a circle of male convex retaining ring is provided on the circumferential outer wall of the male plastic body, a female inward convex stop ring is provided on the inner wall of the female locking nut, and a male inward convex stop ring is provided on the inner wall of the male locking nut, the female locking nut is sleeved on the outer side of the female plastic body, the male locking nut is sleeved on the outer side of the male plastic body, and the threaded connection between the female locking nut and the male locking nut can make the axial end faces of the female convex retaining ring and the male convex retaining ring deviate from each other. It is tightly clamped between the opposite axial end faces of the female end inner convex stop ring and the male end inner convex stop ring, and the axial end faces of the female end outer convex stop ring and the male end outer convex stop ring that face away from each other are respectively provided with a first female end stop member and a first male end stop member extending along their axial direction, and the axial end faces of the female end inner convex stop ring and the male end inner convex stop ring that face each other are respectively provided with a second female end stop member and a second male end stop member extending along their axial direction, when the female end inner convex stop ring is in close contact with the female end outer convex stop ring, the first female end stop member can provide resistance to the second female end stop member rotating around the axis of the female end lock nut, and when the male end inner convex stop ring is in close contact with the male end outer convex stop ring, the first male end stop member can provide resistance to the second male end stop member rotating around the axis of the female end lock nut.

[0005] As a further improvement of the present invention, the first female end stopper and the first male end stopper are respectively stop-retraction protrusions fixedly arranged on the axial end faces of the female end outer convex stop ring and the male end outer convex stop ring that are opposite to each other, and the second female end stopper and the second male end stopper are respectively stop-retraction grooves arranged on the axial end faces opposite to each other of the female end inner convex stop ring and the male end inner convex stop ring, and the stop-retraction protrusions can be inserted into the stop-retraction grooves.

[0006] As a further improvement of the present invention, a plurality of retaining grooves are evenly spaced along the circumferential direction of the axial end faces of the female end inner convex stop ring and the male end inner convex stop ring relative to each other.

[0007] As a further improvement of the present invention, a plurality of stop convex points are evenly spaced on the axial end faces of the female end external convex stop ring and the male end external convex stop ring that are away from each other.

[0008] As a further improvement of the present invention, the two side walls of the stop protrusion along the rotation direction of the female end to the lock nut and the male end to the lock nut are both inclined surfaces or convex arc surfaces that make the root width of the stop protrusion greater than the end width, and the two side walls of the stop groove along the rotation direction of the female end to the lock nut and the male end to the lock nut are inclined surfaces or concave arc surfaces that match the stop protrusion.

[0009] As a further improvement of the present invention, the retaining protrusion extends radially along the female end plastic body or the male end plastic body, and the retaining groove extends radially along the female end locking nut and the male end locking nut.

[0010] As a further improvement of the present invention, a concave and convex pattern is formed on the outer circumferential surface of the female end locking nut, the outer diameter of the end of the male end locking nut facing the female end locking nut is larger than the outer diameter of the end facing away from the female end locking nut, an internal thread is formed on the inner side of the female end locking nut, an external thread is formed on the outer side of the end of the male end locking nut facing the female end locking nut, and a concave and convex pattern is provided on the outer side of the end of the male end locking nut facing away from the female end locking nut.

[0011] As a further improvement of the present invention, the male end plastic body and the female end plastic body are respectively fixed with a male end rubber bag and a female end rubber bag at one end away from each other, and the inner convex stop ring of the female end locking nut is stopped on the female end rubber bag with its back to the male end locking nut, and the inner convex stop ring of the male end locking nut is stopped on the male end rubber bag with its back to the female end locking nut.

[0012] The beneficial technical effect of the present invention is as follows: the present invention provides an axially extending first female end stopper and a first male end stopper on the outer convex stop ring step surfaces of the female end plastic body and the male end plastic body, and an axially extending second female end stopper and a second male end stopper on the inner convex stop ring step surfaces of the female end locking nut and the male end locking nut. After the female end locking nut and the male end locking nut are threadedly connected to the female end plastic body and the male end plastic body and are fully plugged into place, the second female end stopper is blocked by the first female end stopper, resulting in the female end locking nut being unable to reverse under a torque value lower than the designed value. Similarly, the second male end stopper is blocked by the first male end stopper, resulting in the female end locking nut being unable to reverse under a torque value lower than the designed value, thereby achieving The circumferential stopping positioning of the female end to the lock nut and the male end to the lock nut is realized, so that the two cannot rotate relative to each other to unlock, thereby ensuring the stability of the male connector and the female connector plug-in connection, and the two will not loosen even if subjected to high-frequency vibration. In the present application, the stop member is designed on the step surface of the inner convex stop ring and the outer convex stop ring, and is designed as a protrusion and groove extending along the axial direction. Since the protrusion on the plastic body is integrally molded on the step surface of the outer convex stop ring and extends along the axial direction, it is easy to mold during injection molding, and the molding dimensional accuracy is easy to be guaranteed, which is conducive to simplifying the molding mold structure and reducing production costs. This structure is not easily affected by the molding process, and the dimensional tolerance is easy to guarantee, which can effectively improve the smoothness of the rotation of the lock nut and the stability of the nut's anti-locking function. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional diagram of the circular connector male and female ends locked together;

[0014] Figure 2 This is a partial sectional front view of the circular connector male and female ends in a locked state;

[0015] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0016] Figure 4 for Figure 2 Middle BB section view;

[0017] Figure 5 This is a three-dimensional diagram of the female connector of the present utility model;

[0018] Figure 6 This is a three-dimensional diagram of the plastic body of the female end of the present utility model;

[0019] Figure 7 This is a three-dimensional diagram of the female terminal of the present utility model;

[0020] Figure 8 This is a three-dimensional diagram of the female end lock nut of the present utility model;

[0021] Figure 9 This is a three-dimensional diagram of the male connector of the present utility model;

[0022] Figure 10 This is a three-dimensional diagram of the plastic body of the male end of the utility model;

[0023] Figure 11 This is a three-dimensional diagram of the male terminal of the present utility model;

[0024] Figure 12 This is a three-dimensional diagram of the male end locking nut of the present utility model;

[0025] Figure 13 A three-dimensional diagram of a wire connected to a female terminal and a male terminal;

[0026] Figure 14 It is a partially cutaway perspective view of the thread retaining structure of the female end lock nut;

[0027] Figure 15 for Figure 14 Enlarged view of middle C part;

[0028] Figure 16 It is a partially cutaway perspective view of the thread stop structure of the male end locking nut;

[0029] Figure 17 for Figure 16 Enlarged view of part D in the middle. DETAILED DESCRIPTION

[0030] Embodiment: A circular connector thread stop structure comprises a female end plastic body 11, a female end locking nut 12, a male end plastic body 21 and a male end locking nut 22, wherein the outer circumferential wall of the female end plastic body 11 is provided with a circle of female end convex retaining ring 111, the outer circumferential wall of the male end plastic body 21 is provided with a circle of male end convex retaining ring 211, the inner side wall of the female end locking nut 12 is provided with a female end inner convex stop ring 121, the inner side wall of the male end locking nut 22 is provided with a male end inner convex stop ring 221, the female end locking nut 12 is sleeved on the outer side of the female end plastic body 11, the male end locking nut 22 is sleeved on the outer side of the male end plastic body 21, the female end locking nut 12 and the male end locking nut 22 are threadedly connected so that the axial end faces of the female end convex retaining ring 111 and the male end convex retaining ring 211 which are facing away from each other are tightly clamped on the female end inner convex stop ring 1 21 and the male end inner convex stop ring 221, the axial end faces of the female end outer convex stop ring 111 and the male end outer convex stop ring 211 that are opposite to each other are respectively provided with a first female end stop member 112 and a first male end stop member 212 extending along their axial direction, and the axial end faces of the female end inner convex stop ring 121 and the male end inner convex stop ring 221 that are opposite to each other are respectively provided with a second female end stop member 122 and a second male end stop member 222 extending along their axial direction, when the female end inner convex stop ring 121 is in close contact with the female end outer convex stop ring, the first female end stop member 112 can provide resistance to the second female end stop member 122 rotating around the axis of the female end lock nut 12, and when the male end inner convex stop ring 221 is in close contact with the male end outer convex stop ring, the first male end stop member 212 can provide resistance to the second male end stop member 222 rotating around the axis of the female end lock nut 12.

[0031] After the male connector and the female connector are plugged in and connected, they are threaded together through the female lock nut 12 and the male lock nut 22. The female inner convex stop ring 121 in the female lock nut 12 and the male inner convex stop ring 221 in the male lock nut 22 clamp the female outer convex stop ring 111 outside the female plastic body 11 and the male outer convex stop ring 211 outside the male plastic body 21, so that the female plastic body 11 and the male plastic body 21 cannot be disengaged, which plays a role in securing the male connector and the female end. The connector has an anti-slip effect. At the same time, the second female end stopper 122 on the inner convex stop ring step surface of the female end lock nut 12 is in close contact with the first female end stopper 112 on the outer convex stop ring step surface of the female end plastic body 11. The first female end stopper 112 provides resistance to the second female end stopper 122 in the direction of rotation, so that the female end lock nut 12 cannot rotate under the action of torsion within the design range. Similarly, the second male end stopper on the inner convex stop ring step surface of the male end lock nut 22 is in close contact with the first female end stopper 112 on the outer convex stop ring step surface of the female end plastic body 11. The second female end stop 122 and the second male end stop 222 are in close contact with the first male end stop piece 212 on the step surface of the convex stop ring of the male end plastic body 21, and the first male end stop 212 provides resistance in the rotation direction to the second male end stop 222, so that the male end locking nut 22 cannot rotate under the action of the torsional force within the design range. In this way, the female end locking nut 12 and the male end locking nut 22 will not rotate relative to each other even if they are subjected to high-frequency vibration when in the locked state, which can effectively prevent the locking nut from being unlocked, thereby improving the connection stability of the male end connector and the female end connector. When the locking nut is manually rotated to unlock, the second female end stop 122 and the second male end stop 222 can overcome the resistance of the first female end stop 112 and the first male end stop 212 to reverse and unlock. During the unlocking process, the second female end stop 122 and the second male end stop 222 will gradually disengage from the first female end stop 112 and the first male end stop 212, making it easier for the locking nut to rotate. This structure effectively improves the rotation smoothness of the locking nut.

[0032] The first female end stopper 112 and the first male end stopper 212 are respectively stop protrusions fixedly arranged on the axial end faces of the female end outer convex stop ring and the male end outer convex stop ring facing away from each other, and the second female end stopper 122 and the second male end stopper 222 are respectively stop grooves arranged on the axial end faces opposite to each other of the female end inner convex stop ring 121 and the male end inner convex stop ring 221, and the stop protrusions can be inserted into the stop grooves. When the lock nut is rotated and locked, the backstop protrusion on the plastic body is inserted into the backstop groove of the lock nut, thereby limiting the lock nut along its circumferential direction. This structural design forms a backstop protrusion in the axial direction when the plastic body is molded, which is convenient for controlling the dimensional accuracy of plastic molding, is beneficial for demoulding, reduces the influence of the molding process on the backstop protrusion and the backstop groove of the lock nut, and the dimensional tolerance is easily guaranteed, so that when locking, the backstop protrusion is stably accommodated in the backstop groove, which is beneficial to improving the stability of the nut's anti-backstop function, and when the lock nut is reversed and unlocked, the backstop protrusion automatically exits the backstop groove, making the lock nut easy to rotate, which can effectively improve the smoothness of the lock nut's rotation.

[0033] In addition to using the anti-recognition protrusion and anti-recognition groove plug-in structure to achieve the positioning of the lock nut, the friction resistance can also be increased by setting a high friction coefficient contact surface on the outer convex retaining ring of the plastic body or the step surface of the inner convex retaining ring of the lock nut, thereby playing a role in preventing retreat. This type of equivalent replacement structure can be easily thought of by technical personnel in this field based on the technical solution of this patent and falls within the scope of protection of this patent.

[0034] Several stop grooves are evenly spaced along the circumference of the opposing axial end surfaces of the female inner convex stop ring 121 and the male inner convex stop ring 221. The evenly spaced arrangement of the stop grooves forms a circle of thrust grooves on the adjustment surface of the inner convex stop ring of the lock nut, similar to a gear structure. This structure allows the lock nut to form a meshing connection with the stop protrusions at any rotation angle, effectively preventing the female lock nut 12 and the male lock nut 22 from rotating.

[0035] A plurality of stop convex points are evenly spaced apart on the axial end faces of the female end outer convex stop ring and the male end outer convex stop ring which are away from each other.

[0036] The number of the anti-retraction protrusions can be one, two or four symmetrically designed, or a circle of anti-retraction grooves can be designed in a one-to-one correspondence, and the design can be carried out according to actual needs.

[0037] The side walls of the retaining protrusion along the rotational direction of the female end locking nut 12 and the male end locking nut 22 are inclined surfaces or convex arc surfaces, making the base width of the retaining protrusion wider than the end width. The side walls of the retaining groove along the rotational direction of the female end locking nut 12 and the male end locking nut 22 are inclined surfaces or concave arc surfaces that match the retaining protrusion. This structure allows the retaining protrusion to smoothly exit the retaining groove when the locking nut is reversed and unlocked.

[0038] The retaining protrusion extends radially along the female plastic body 11 or the male plastic body 21, while the retaining groove extends radially along the female lock nut 12 and the male lock nut 22. The retaining protrusion forms a radially extending convex arc ridge that cooperates with the radially extending concave arc retaining groove, resulting in a large contact area and stable positioning of the lock nut.

[0039] A concave and convex pattern is formed on the outer circumferential surface of the female end locking nut 12, and the outer diameter of the end of the male end locking nut 22 facing the female end locking nut 12 is larger than the outer diameter of the end facing away from the female end locking nut 12. An internal thread is formed on the inner side of the female end locking nut 12, and an external thread is formed on the outer side of the end of the male end locking nut 22 facing the female end locking nut 12. A concave and convex pattern is provided on the outer side of the end of the male end locking nut 22 facing away from the female end locking nut 12.

[0040] The ends of the male end plastic body 21 and the female end plastic body 11 that are away from each other are respectively fixed with a male end rubber coating 23 and a female end rubber coating 13. The inner convex stop ring of the female end lock nut 12, facing away from the male end lock nut 22, stops on the female end rubber coating 13, and the inner convex stop ring of the male end lock nut 22, facing away from the female end lock nut 12, stops on the male end rubber coating 23. The female end rubber coating 13 can fix and connect the female end plastic body 11 to the wire sheath, and the male end rubber coating 23 can fix and connect the male end plastic body 21 to the wire sheath. At the same time, the female end rubber coating 13 and the male end rubber coating 23 can cover and protect the female end plastic body 11 and the male end plastic body 21, and can also block and limit the lock nut to prevent it from falling.

Claims

1. A circular connector thread stop structure, comprising a female end plastic body (11), a female end locking nut (12), a male end plastic body (21) and a male end locking nut (22), wherein a circle of female end convex retaining ring (111) is provided on the circumferential outer wall of the female end plastic body, a circle of male end convex retaining ring (211) is provided on the circumferential outer wall of the male end plastic body, and a female end inward convex retaining ring (121) is provided on the inner side wall of the female end locking nut. A male end inner convex stop ring (221) is provided on the inner side wall of the male end locking nut, the female end locking nut is sleeved on the outer side of the female end plastic body, the male end locking nut is sleeved on the outer side of the male end plastic body, the female end locking nut and the male end locking nut are threadedly connected to each other so that the axial end faces of the female end outer convex stop ring and the male end outer convex stop ring, which are separated from each other, are tightly clamped between the axial end faces of the female end inner convex stop ring and the male end inner convex stop ring. The invention is characterized in that: A first female end stopper (112) and a first male end stopper (212) extending along the axial direction thereof are respectively provided on the axial end faces of the female end outer convex stop ring and the male end outer convex stop ring which are away from each other, and a second female end stopper (122) and a second male end stopper (222) extending along the axial direction thereof are respectively provided on the axial end faces of the female end inner convex stop ring and the male end inner convex stop ring which are opposite to each other. When the female end inner convex stop ring is in close contact with the female end outer convex stop ring, the first female end stopper can provide resistance to the second female end stopper rotating around the axis of the female end lock nut, and when the male end inner convex stop ring is in close contact with the male end outer convex stop ring, the first male end stopper can provide resistance to the second male end stopper rotating around the axis of the female end lock nut.

2. The circular connector thread stop structure according to claim 1, characterized in that: The first female end stopper and the first male end stopper are respectively stop-retraction protrusions fixedly arranged on the axial end faces of the female end outer convex stop ring and the male end outer convex stop ring facing away from each other, and the second female end stopper and the second male end stopper are respectively stop-retraction grooves arranged on the axial end faces opposite to each other of the female end inner convex stop ring and the male end inner convex stop ring, and the stop-retraction protrusions can be inserted into the stop-retraction grooves.

3. The circular connector thread stop structure according to claim 2, characterized in that: A plurality of retaining grooves are evenly spaced along the circumferential direction of the axial end faces of the female end inner convex stop ring and the male end inner convex stop ring relative to each other.

4. The circular connector thread stop structure according to claim 3, wherein: A plurality of stop convex points are evenly spaced apart on the axial end faces of the female end outer convex stop ring and the male end outer convex stop ring which are away from each other.

5. The circular connector thread retaining structure according to claim 4, characterized in that: The two side walls of the stop protrusion along the rotation direction of the female end to the lock nut and the male end to the lock nut are both inclined surfaces or convex arc surfaces that make the root width of the stop protrusion greater than the end width, and the two side walls of the stop groove along the rotation direction of the female end to the lock nut and the male end to the lock nut are inclined surfaces or concave arc surfaces that match the stop protrusion.

6. The circular connector thread stop structure according to claim 2, characterized in that: The retaining protrusion extends radially along the female end plastic body or the male end plastic body, and the retaining groove extends radially along the female end locking nut and the male end locking nut.

7. The circular connector thread stop structure according to claim 1, characterized in that: A concave and convex pattern is formed on the outer circumferential surface of the female end locking nut, the outer diameter of the end of the male end locking nut facing the female end locking nut is larger than the outer diameter of the end facing away from the female end locking nut, an internal thread is formed on the inner side of the female end locking nut, an external thread is formed on the outer side of the end of the male end locking nut facing the female end locking nut, and a concave and convex pattern is provided on the outer side of the end of the male end locking nut facing away from the female end locking nut.

8. The circular connector thread stop structure according to claim 1, characterized in that: The ends of the male end plastic body and the female end plastic body that are away from each other are respectively fixed with a male end rubber bag (23) and a female end rubber bag (13), the inner convex stop ring of the female end locking nut is stopped on the female end rubber bag with its back to the male end locking nut, and the inner convex stop ring of the male end locking nut is stopped on the male end rubber bag with its back to the female end locking nut.

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