A push-pull self-locking connector structure

Abstract

The present invention relates to the technical field of connectors, and provides a push-pull self-locking connector structure, including: a fixed end connector and a movable end connector, the fixed end connector is provided with an external thread and an annular protrusion, the movable end connector includes a locking ring, a socket insulator outer cover and a retaining spring, the retaining spring is stuck in the outer cover and abuts against the locking ring, wherein when the movable end connector is pushed into the housing of the fixed end connector, the retaining spring is engaged with the annular protrusion to achieve a fixed connection between the fixed end connector and the movable end connector, and when the locking ring is pulled in a direction opposite to the insertion direction of the movable end connector, the front end of the locking ring applies pressure to the retaining spring, so that the retaining spring and the annular protrusion are disengaged, and the fixed end connector and the movable end connector are separated. The present invention can improve the wiring efficiency of electrical equipment, reduce wiring costs, and improve wiring reliability and vibration resistance.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a push-pull self-locking connector structure. Background Art

[0002] Existing connector locking connection solutions mainly include the following: (1) Internal and external thread locking solution. (2) Locking ring push-pull elastic buckle connection solution. (3) Press-type spring lock connection solution. (4) Push-pull steel ball self-locking connection solution. However, these connector locking connection solutions have the following shortcomings: 1) The locking operation is complicated. The threaded connection requires a specific torque to lock the connection. Small torque cannot achieve the ideal locking effect, or cause the connector to disengage or fail to achieve the expected dust and waterproof protection effect. Large torque has the risk of damaging the connector structure and poor reliability. 2) Low locking efficiency. Thread locking requires step-by-step operation to achieve the locking effect, and the locking efficiency is low. 3) Poor seismic resistance. The threaded locking connector becomes loose or even disengaged under vibration and impact, causing the equipment to stop or be damaged. 4) Since connectors with non-threaded connection structures are mostly used at the active ends of cables, and the corresponding matching connectors are mostly used on the fixed structures of equipment, when using traditional non-threaded locking connectors, the corresponding fixed-end connectors also need to meet this locking structure at the same time. The fixed-end connectors with traditional locking structures are not compatible with the traditional threaded locking cable-end connectors at the same time, which reduces the versatility of the fixed-end connectors and increases the cost of using this traditional non-threaded locking connector. 5) Existing non-threaded locking connectors have complex structures and large dimensions, and are not suitable for smaller active space applications. In addition, due to the complex structure and large number of components of existing non-threaded locking connectors, the wiring costs of users are greatly increased. Summary of the invention

[0003] In view of the above technical problems, the technical solution adopted by the present invention is:

[0004] The embodiment of the present invention provides a push-pull self-locking connector structure, comprising: an annular slot annular slot annular slot

[0005] The embodiment of the present invention provides a push-pull self-locking connector structure, including: a fixed-end connector and a movable-end connector, the fixed-end connector including a shell, a pin insulator, and a locking nut, the outer periphery of the front end of the shell is provided with a first external thread, the locking nut is provided on the first external thread, the outer periphery of the rear end of the shell is provided with a second external thread and an annular protrusion, the pin insulator is provided in the shell, and a metal pin is provided in the pin insulator; the movable-end connector includes a rubber-coated shell, a jack insulator, a jack insulator outer cover, a retaining spring and a locking ring, the jack insulator is provided in the jack insulator outer cover, an annular groove is provided on the jack insulator outer cover, a metal jack is provided in the jack insulator, one end of the metal jack is connected to the exposed wire in the cable, and the other end is connected to the metal plug The locking ring is sleeved on the outer cover of the jack insulator, one end of the rubber-coated shell is connected to the outer cover of the jack insulator, and the other end is connected to the cable, and a downward-inclined annular crimping portion is provided inside the front end of the locking ring, and the retaining spring is provided in the annular groove, and the annular crimping portion abuts against the retaining spring, wherein, when the movable end connector is pushed into the outer cover of the fixed end connector, the annular protrusion is inserted into the retaining spring to realize the fixed connection between the fixed end connector and the movable end connector, and when the annular groove pulls the locking ring in a direction opposite to the insertion direction of the movable end connector, the annular crimping portion of the locking ring applies a thrust to the retaining spring in the pulling direction, so that the retaining spring is disengaged from the annular protrusion, thereby realizing the separation of the fixed end connector from the movable end connector.

[0006] The present invention has at least the following beneficial effects:

[0007] The push-pull self-locking connector structure provided by the embodiment of the present invention has an annular protrusion inside the fixed end connector, and a retaining ring and a locking ring for applying thrust to the retaining ring are provided on the movable end connector. When the movable end connector is pushed into the fixed end connector, the annular protrusion will be stuck in the retaining ring to achieve a fixed connection between the two. When the locking ring is pulled backward, the retaining ring will be pressed backward so that the retaining ring and the annular protrusion are disengaged, and the fixed end connector and the movable end connector can be separated smoothly. Through this connection method, no additional tools are required, only a simple push-pull operation is required to achieve the rapid assembly and separation of the fixed end connector and the movable end connector, thereby improving the wiring efficiency of the electrical equipment. In addition, the fixed end connector is provided with an external thread on the outside, which can be adapted to the movable end connector of the traditional threaded locking structure with an internal thread, and has strong applicability. In addition, the self-locking structure of the present invention only includes an annular recessed portion, a buckle with a protrusion, and a locking ring for applying pressure to the buckle. This self-locking structure is simple and has a low manufacturing cost, thereby reducing the wiring cost. Traditional threaded connectors will become loose when used in vibration scenarios, and the connector connection will be unreliable. The self-locking structure of the present invention will not fall out even in a vibration environment, and the connection is reliable, which can improve the vibration resistance and reliability of the connector.

[0008] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0010] Figure 1 A schematic structural diagram of a fixed-end connector and a movable-end connector of a push-pull self-locking connector structure provided by an embodiment of the present invention;

[0011] Figure 2 An exploded schematic diagram of an active end connector provided by an embodiment of the present invention;

[0012] Figure 3 is a schematic cross-sectional view of a base portion of a retaining spring;

[0013] Figure 4 A cross-sectional view of a push-pull self-locking connector structure provided by an embodiment of the present invention;

[0014] Figure 5An enlarged schematic diagram of the self-locking structure of the push-pull self-locking connector structure provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0016] The embodiment of the present invention provides a push-pull self-locking connector structure, such as Figure 1 As shown, the push-pull self-locking connector structure may include: a fixed end connector A and a movable end connector B, wherein the fixed end connector is used to connect to a wiring panel or housing of an electrical device, and the movable end connector is used to fix cables. The fixed end connector and the movable end connector may be circular connectors.

[0017] Among them, Figures 1 to 4 As shown, the fixed-end connector A may include a housing 1, a pin insulator 2 and a locking nut 3. The outer periphery of the front end of the housing 1 is provided with a first external thread 4, and the locking nut 3 is arranged on the first external thread 4. The locking nut is used to lock the fixed-end connector on the housing or panel of the electrical device. The interior of the rear end of the housing 1 is provided with a second external thread 5 and an annular protrusion 6, and the annular protrusion 6 is located at the front end of the second external thread 5. The pin insulator 2 is arranged in the housing, and a metal pin 7 is arranged in the pin insulator 2. The pin insulator 2 is provided with a pin slot for inserting the metal pin 7.

[0018] In addition, a first sealing member 8 is disposed at the rear end of the first external thread 4 of the housing 1. The first sealing member may be an O-type rubber sealing ring. A first sealing groove 9 for mounting the first sealing member is provided at the front end of the housing 1.

[0019] In the embodiment of the present invention, the external thread on the housing is an M16×1.5 thread.

[0020] In the embodiment of the present invention, both ends of the fixed-end connector are provided with external threads, which can be adapted to the movable-end connector of the traditional thread locking structure with internal threads, and has strong applicability.

[0021] Furthermore, if Figures 1 to 4 As shown, the active end connector B includes a rubber-coated shell 10, a jack insulator 11, a jack insulator outer cover 12, a locking ring 13 and a retaining spring 14.

[0022] The jack insulator 11 is disposed in the jack insulator outer cover 12, and a metal jack 16 is disposed in the jack insulator 11, one end of the metal jack 16 is connected to a bare wire 18 in a cable 17, and the other end is connected to the metal pin 7. The lock ring 13 is sleeved on the jack insulator outer cover 12, one end of the rubber-coated shell 10 is connected to the jack insulator outer cover 12, and the other end is connected to the cable 17. The rubber-coated shell is formed by rubber-coating, and is used to wrap the bare ends of the wires and cables.

[0023] Among them, Figure 3 and Figure 4 As shown, an annular groove 15 is provided on the outer cover 12 of the jack insulator, and an annular crimping portion 19 inclined downward is provided inside the front end of the locking ring 13. The retaining spring 14 is provided in the annular groove 15, and the annular crimping portion 19 abuts against the retaining spring 14. When the movable end connector is pushed into the housing of the fixed end connector, the annular protrusion is clamped into the retaining spring to achieve a fixed connection between the fixed end connector and the movable end connector. When the locking ring is pulled in a direction opposite to the insertion direction of the movable end connector, the annular crimping portion of the locking ring applies a thrust to the retaining spring in the pulling direction, so that the retaining spring is disengaged from the annular protrusion, and the fixed end connector and the movable end connector are separated.

[0024] In the embodiment of the present invention, the metal plug hole 16 and the wire 18 can be connected and conducted by crimping or welding.

[0025] In the embodiment of the present invention, the clamping spring may be made of an elastic material, and the locking ring may be made of a metal material.

[0026] Furthermore, if Figures 2 to 5 As shown, the retaining spring 14 may include m base portions 20 with the same structure and m inclined portions 21 with the same structure. The m base portions are arranged at intervals along the circumferential direction, and the m base portions are located on the same circle, that is, forming a circular structure. Any two adjacent base portions are connected by an inclined portion.

[0027] In the embodiment of the present invention, the value of m can be determined based on actual conditions. In an exemplary embodiment, m=18. The base portion and the inclined portion can be formed integrally to form a ring structure having a plurality of inclined portions. Figure 2 As shown, the cross-sectional shape of the base portion is U-shaped, and may include an arc-shaped bottom and side portions arranged on both sides of the arc-shaped bottom. The inclined portion 21 may be a structure with a wide lower end and a narrow upper end, specifically, as Figure 3As shown, the cross-sectional shape of the inclined portion 21 is formed by a first straight line S1, a first arc C1, a second arc C2, a first oblique line D1, a second straight line S2, a third arc C3, a third straight line S3 and a second oblique line D2. The two ends of the first straight line S1 are respectively connected to the first arc C1 and the second arc C2. The first oblique line D1 is respectively connected to the first arc C1 and the second straight line S2. The second oblique line D2 is respectively connected to the second arc C2 and the third straight line S3. The third arc C3 is respectively connected to the second straight line S2 and the third straight line S3. The second straight line S2 and the third straight line S3 are both parallel to the first straight line S1. The angle between the first oblique line D1 and the second straight line S2 and the angle between the second oblique line D2 and the third straight line S3 are both acute angles. The third arc C3 is recessed toward the first straight line S1. The planes where the second straight line S2 and the third straight line S3 are located are respectively connected to the corresponding two adjacent base portions.

[0028] In the embodiment of the present invention, the specific dimensions of the base portion and the inclined portion can be set based on actual needs.

[0029] In the embodiment of the present invention, when the retaining ring 14 is inserted into the annular retaining groove 15, the base portion 20 contacts the annular retaining groove 15, the inclined portion 21 contacts the annular protrusion 6, and the annular crimping portion 19 contacts the inclined portion 21. The retaining ring will be stuck between the annular crimping portion and the annular protrusion, thereby realizing a secure connection between the fixed-end connector and the movable-end connector.

[0030] Specifically, the annular groove 15 is formed with an annular top surface and an annular inclined surface connected to the annular top surface, and the annular inclined surface is formed to be inclined downward relative to the annular top surface. The annular crimping portion is formed as a tongue pressing structure. The base portion contacts the annular top surface. The bottom of the inclined portion is clamped on the annular protrusion, and the annular crimping portion abuts against the lower end of the inclined portion.

[0031] Furthermore, in an embodiment of the present invention, the angle α between the inclined portion and the plane where the base portion is located satisfies the following condition: 10°≤α≤30°, preferably, 18°≤α≤30°. In this way, the clamping spring and the annular protrusion can be firmly connected and can be easily separated from each other.

[0032] Furthermore, if Figure 4 As shown, an annular groove 22 is formed at the rear end of the lock ring 13 , and an annular limiting portion 23 is also provided on the jack insulator outer cover 12 , and the annular groove 22 is used for the annular limiting portion 23 to be embedded.

[0033] In the embodiment of the present invention, the lock ring is fixed to the outer cover of the jack insulator by press-fitting. Specifically, the clamping spring is first clamped in the annular clamping groove of the outer cover of the jack insulator, and then the lock ring is pressed into the outer cover of the jack insulator, the annular limiting portion of the outer cover of the jack insulator is embedded in the annular groove, and the annular crimping portion of the lock ring is abutted against the clamping spring, so that the lock ring is installed.

[0034] Furthermore, the jack insulator housing 12 is provided with an annular sealing groove 30, the annular sealing groove 30 is located at the rear end of the annular clamping groove, and the annular sealing groove is provided with a second sealing member 31. The second sealing member is an O-type rubber sealing ring.

[0035] In an exemplary embodiment of the present invention, the jack insulator 11 and the jack insulator outer cover 12 are formed integrally.

[0036] In an exemplary embodiment of the present invention, the jack insulator 11 and the jack insulator outer cover 12 are formed separately, wherein the jack insulator outer cover 12 is made of metal material.

[0037] In the case where the jack insulator 11 and the jack insulator housing 12 are formed separately, as shown in FIG. Figure 3 and Figure 4 As shown, the push-pull self-locking connector structure provided by the embodiment of the present invention also includes: a shielding sleeve 24 and a crimping ring 25. The shielding sleeve and the crimping ring are both made of metal. The crimping ring 25 is sleeved on the cable 17 and located in the rubber-coated shell 10. One end of the shielding sleeve 24 is connected to the jack insulator outer cover 12 through a snap-on structure, and the other end is sleeved on the crimping ring 25. The jack insulator outer cover, the shielding sleeve and the crimping ring form an electromagnetic protection structure, which can reduce electromagnetic interference, improve signal transmission quality, and play an electromagnetic protection role.

[0038] In the embodiment of the present invention, after the shielding layer of the cable is stripped off, it can be pressed backwards between the crimping ring and the cable sheath.

[0039] Furthermore, if Figure 4 As shown, the snap-fit ​​structure may include a first groove 26 and a first stop 27 provided on the outer cover of the jack insulator and a second groove 28 and a second stop 29 provided on the shielding sleeve. The first stop 27 is located at the rear end of the first groove 26, and the second stop 29 is located at the front end of the second groove 28. By inserting the first stop into the second groove and inserting the second stop into the first groove, the fixed connection between the outer cover of the jack insulator and the shielding sleeve is achieved.

[0040] The push-pull self-locking connector structure provided by the embodiment of the present invention has an annular protrusion inside the fixed end connector, and a retaining ring and a locking ring for applying thrust to the retaining ring are provided on the movable end connector. When the movable end connector is pushed into the fixed end connector, the annular protrusion will be stuck in the retaining ring to achieve a fixed connection between the two. When the locking ring is pulled backward, the retaining ring will be pressed backward so that the retaining ring and the annular protrusion are disengaged, and the fixed end connector and the movable end connector can be separated smoothly. Through this connection method, no additional tools are required, only a simple push-pull operation is required to achieve the rapid assembly and separation of the fixed end connector and the movable end connector, thereby improving the wiring efficiency of the electrical equipment. In addition, the fixed end connector is provided with an external thread on the outside, which can be adapted to the movable end connector of the traditional threaded locking structure with an internal thread, and has strong applicability. In addition, the self-locking structure of the present invention only includes an annular recessed portion, a buckle with a protrusion, and a locking ring for applying pressure to the buckle. This self-locking structure is simple and has a low manufacturing cost, thereby reducing the wiring cost. Traditional threaded connectors will become loose when used in vibration scenarios, and the connector connection will be unreliable. The self-locking structure of the present invention will not fall out even in a vibration environment, and the connection is reliable, which can improve the vibration resistance and reliability of the connector.

[0041] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution disclosed in the present invention can be achieved, and this document does not limit this.

[0042] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A push-pull self-locking connector structure, characterized in that: include: A fixed-end connector and a movable-end connector, wherein the fixed-end connector comprises a housing, a pin insulator, and a locking nut, wherein the outer periphery of the front end of the housing is provided with a first external thread, the locking nut is provided on the first external thread, the outer periphery of the rear end of the housing is provided with a second external thread and an annular protrusion, the pin insulator is provided in the housing, and a metal pin is provided in the pin insulator; The active end connector includes a rubber-coated shell, a jack insulator, a jack insulator outer cover, a retaining spring and a locking ring. The jack insulator is arranged in the jack insulator outer cover, an annular groove is arranged on the jack insulator outer cover, a metal jack is arranged in the jack insulator, one end of the metal jack is connected to the exposed wire in the cable, and the other end is connected to the metal pin; the locking ring is sleeved on the jack insulator outer cover, one end of the rubber-coated shell is connected to the jack insulator outer cover, and the other end is connected to the cable, and a downward-inclined annular crimping portion is arranged inside the front end of the locking ring , the clamping spring is arranged in the annular groove, and the annular crimping portion abuts against the clamping spring, wherein, when the movable end connector is pushed into the housing of the fixed end connector, the annular protrusion is clamped into the clamping spring to realize the fixed connection between the fixed end connector and the movable end connector, and when the annular groove pulls the locking ring in the direction opposite to the insertion direction of the movable end connector, the annular crimping portion of the locking ring applies a thrust to the clamping spring in the pulling direction, so that the clamping spring is disengaged from the annular protrusion, thereby realizing the separation of the fixed end connector from the movable end connector; The clamping spring comprises m base parts with the same structure and m inclined parts with the same structure, the m base parts are arranged at intervals in the circumferential direction, the m base parts are located on the same circle, any two adjacent base parts are connected by an inclined part, the cross-sectional shape of the base part is U-shaped, the cross-sectional shape of the inclined part is formed by a first straight line, a first arc line, a second arc line, a first oblique line, a second straight line, a third arc line, a third straight line and a second oblique line, two ends of the first straight line are respectively connected to the first arc line and the second arc line, the first oblique line is respectively connected to the first arc line and the second straight line, the second oblique line is respectively connected to the second arc line and the third straight line, the third arc line is respectively connected to the second straight line and the third straight line, the second straight line and the third straight line are both parallel to the first straight line, the angle between the first oblique line and the second straight line and the angle between the second oblique line and the third straight line are both acute angles, the third arc line is formed by being recessed toward the first straight line, and the planes where the second straight line and the third straight line are located are respectively connected to the corresponding two adjacent base parts; When the retaining ring is installed in the annular groove, the base portion contacts the annular groove, the inclined portion is tilted downward relative to the base portion and contacts the annular protrusion, and the annular crimping portion contacts the inclined portion.

2. The push-pull self-locking connector structure according to claim 1, characterized in that: The angle α between the inclined portion and the plane where the base portion is located satisfies the following condition: 10°≤α≤30°.

3. The push-pull self-locking connector structure according to claim 1, characterized in that: An annular groove is formed at the rear end of the lock ring; an annular limiting portion is also provided on the outer cover of the jack insulator, and the annular groove is used for the annular limiting portion to be embedded.

4. The push-pull self-locking connector structure according to claim 1, characterized in that: The socket insulator and the socket insulator outer cover are formed integrally.

5. The push-pull self-locking connector structure according to claim 1, characterized in that: The jack insulator and the jack insulator outer cover are formed separately, wherein the jack insulator outer cover is made of metal material.

6. The push-pull self-locking connector structure according to claim 5, characterized in that: Also includes: A shielding sleeve and a crimping ring, wherein the crimping ring is sleeved on the cable and located in the rubber-coated shell, one end of the shielding sleeve is connected to the outer cover of the jack insulator through a snap-fit ​​structure, and the other end is sleeved on the crimping ring, and the outer cover of the jack insulator, the shielding sleeve and the crimping ring form an electromagnetic protection structure.

7. The push-pull self-locking connector structure according to claim 6, characterized in that: The clamping structure includes a first groove and a first stopper provided on the outer cover of the jack insulator and a second groove and a second stopper provided on the shielding sleeve. The first stopper is located at the rear end of the first groove and the second stopper is located at the front end of the second groove. By inserting the first stopper into the second groove and inserting the second stopper into the first groove, the fixed connection between the outer cover of the jack insulator and the shielding sleeve is achieved.

8. The push-pull self-locking connector structure according to claim 1, characterized in that: The metal jack and the wire are connected by crimping or welding.

9. The push-pull self-locking connector structure according to claim 1, characterized in that: A first seal is arranged at the rear end of the first external thread of the housing, and an annular seal groove is also arranged in the outer cover of the jack insulator. The annular seal groove is located at the rear end of the annular groove, and a second seal is installed in the annular seal groove.

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