Push-pull type electric connector

Abstract

The invention belongs to the technical field of electric connector manufacturing, and particularly relates to a push-pull type electric connector which is characterized by comprising a plug, a socket and a locking mechanism, and the plug and the locking mechanism are a preassembled combination; after the socket shell and the plug shell are plugged to limit positions, the sinking groove in the outer surface of the socket shell is aligned with the first steel ball positioning assembly on the plug shell. The locking mechanism comprises a sliding sleeve and a locking sleeve, and the sliding sleeve and the locking sleeve are connected through a third piston ring and a second steel ball positioning assembly. When the sliding sleeve moves forwards along the plug shell to a limit position, the variable-diameter annular belt on the inner wall of the sliding sleeve crosses the second steel ball positioning assembly, and the second steel ball positioning assembly corresponds to a sinking groove in the plug shell. A groove with a step bottom is formed in the position, corresponding to the second steel ball positioning assembly, of the inner wall of the locking sleeve, the locking sleeve rotates by 15-30 degrees, the second steel ball positioning assembly rotates from the deep groove to the shallow groove, and locking is completed. The electric connector has the advantages that one-time pushing and one-time rotating are achieved, locking is conducted in the axial direction and the circumferential direction in sequence, and reliable and high-sealing-performance electric connection is provided.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric connector manufacturing, and in particular relates to a push-pull electric connector. Background Art

[0002] In addition to meeting general performance requirements, electrical connectors must also ensure good contact, reliable operation, and easy maintenance. Their reliability directly impacts the proper functioning of circuits. Therefore, host circuits place very stringent demands on the quality and reliability of electrical connectors. Precisely because of their high quality and reliability, electrical connectors are widely used in military systems such as aviation, aerospace, and national defense.

[0003] Electrical connectors are categorized by shape into circular and rectangular connectors. Circular connectors are most commonly used in military equipment (aviation and aerospace) due to their structural characteristics. Rectangular connectors, due to their simpler structure, are more commonly used on printed circuit boards (PCBs) in electronic equipment. They are categorized by structure into threaded, bayonet (quick) connections, snap-on connections, push-pull, and in-line connections. Contact termination options include crimping, soldering, wrap-around, and screw (cap) fixing.

[0004] Chinese utility model patent application number 201520739487.5 discloses a novel push-pull electrical connector, comprising a matching plug and receptacle. The plug comprises a jack insulator assembly, a housing, an outer housing, a friction washer, a rolled ring, and a tail nut, while the receptacle comprises a pin, a glass insulator, a disc housing, and a sealing ring. The connector utilizes a push-pull connection structure, with the plug's split, elastic outer housing's annular protrusion and the receptacle's retaining slot. The plug's retaining key cooperates with the receptacle's keyway to prevent mis-insertion, resulting in quick connection and reliable electrical connectivity.

[0005] Chinese utility model patent application number 201721635906.6 discloses a push-pull, quick-plug, self-locking RF connector, comprising a floating plug and a fixed socket. The floating plug includes a connecting nut, an inner housing, and a pin assembly. A spring is interposed between the connecting nut and the inner housing. An annular groove is provided at the mating point between the inner cavity of the connecting nut and the inner housing. The connecting nut is provided with a set screw, and the inner housing is provided with an L-shaped staple groove. The set screw is located within the L-shaped staple groove. The inner housing is also provided with a steel ball hole and a retaining ring. The steel ball hole contains a steel ball. The fixed socket includes a socket housing, a jack assembly, and an O-ring. The socket housing is provided with an arc groove that mates with the steel ball. This connector can be used in small installation spaces or in special applications requiring quick plugging and unplugging.

[0006] Currently, the existing quick-connect electrical connectors are not suitable for a structure in which one end is crimped with a copper wire and the other end is connected to a copper busbar with screws. Further investment in research and development is needed to meet product needs. Summary of the Invention

[0007] The purpose of the present invention is to provide a push-pull electrical connector that overcomes the shortcomings of the existing technology and aims to meet the application of circuit connection scenarios where one end is a copper wire crimped and the other end is a copper busbar connected by screws through axial movement and rotation, providing a reliable and highly sealed electrical connection under the premise of quick connection.

[0008] To achieve the above object, the present invention is implemented through the following technical solutions:

[0009] A push-pull electrical connector, comprising a plug, a socket and a locking mechanism, wherein the plug and the socket are connected by a locking mechanism, the plug comprising a plug shell, a pin and a cable connector, the socket comprising a socket shell and a jack, the plug shell and the socket shell are socket-connected and provided with a latch at a corresponding position to prevent relative rotation, an insulating sleeve is provided between the plug shell and the pin, and between the socket shell and the jack, respectively. Specifically, it also includes: the cable connector is a crimping sleeve structure, and the jack is a bent copper bus connection structure; the plug and locking mechanism are a pre-assembled assembly, the locking mechanism is connected to the limiting groove on the outer circle of the plug shell through an expansion ring 1, and the locking mechanism can move axially back and forth within the range of the limiting groove; after the socket shell and the plug shell are plugged into the limit position, the locking groove on the outer surface of the socket shell is aligned with the steel ball positioning component 1 on the plug shell; the steel ball positioning component 1 comprises an expansion ring 2 and a steel ball 1, the steel ball 1 is arranged on the outside of the expansion ring 2, and the expansion ring 2 is located in the groove on the inner wall of the plug shell, and multiple steel balls The locking mechanism includes a sliding sleeve and a locking sleeve, the locking sleeve is arranged on the outside of the sliding sleeve, the sliding sleeve and the locking sleeve are connected through the expansion ring three and the steel ball positioning component two, the steel ball positioning component two includes an expansion ring four and steel balls two, the steel balls two are arranged on the outside of the expansion ring four, the expansion ring four is located in the slot on the inner wall of the sliding sleeve, and multiple steel balls two are evenly arranged around the circumference in the opening connected to the slot on the inner wall of the sliding sleeve; the sliding sleeve is provided with a positioning protrusion, the lock A positioning groove is provided on the tight sleeve, and the positioning protrusion has two positions in the positioning groove, namely the release position and the locking position; when the sliding sleeve moves forward along the plug shell to the extreme position, the diameter-reducing ring belt provided on the inner wall of the sliding sleeve passes over the steel ball positioning component 2, and the steel ball positioning component 2 corresponds to the sunken groove on the plug shell; a groove with a stepped bottom is provided on the inner wall of the locking sleeve corresponding to the steel ball positioning component 2, and the locking sleeve rotates 15-30°, and the steel ball positioning component 2 rotates from the deep groove to the shallow groove to complete the locking and fixing.

[0010] Furthermore, the number of the first steel ball and the second steel ball is 6-12 distributed around the circumference.

[0011] Furthermore, a crown band is provided at the joint between the socket and the pin to ensure reliable contact.

[0012] Furthermore, at least one O-ring is provided in the connection area between the plug housing and the sliding sleeve at the forward limit position.

[0013] Furthermore, the first, second, third and fourth expansion rings are all C-shaped stainless steel buckles with rectangular cross-sections.

[0014] Furthermore, the surface of the locking sleeve is provided with diamond-shaped or linear knurling; the outer side of the socket shell is provided with a square connecting flange, and the flange is provided with a rubber gasket groove.

[0015] Furthermore, in the steel ball positioning assembly 1 and the steel ball positioning assembly 2, when not subjected to external force, the expansion ring is in a free diameter state and is completely retracted into the slot.

[0016] Furthermore, the width of the variable diameter annular band is 3-6 mm, and the front and rear sides of the variable diameter annular band at the minimum diameter are both annular bevels, with the same slope on both sides, or the slope of the front side is smaller than the slope of the rear side.

[0017] Furthermore, the pin and the cable connector are connected by screws, and an opening is provided on the plug shell at the connection, and a threaded end cover is provided on the opening.

[0018] Furthermore, the tail of the plug shell is connected to the straight sleeve and the tail nut to form an L-shaped structure that is easy to operate, and the cable connector is hidden in the straight sleeve.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1) The electrical connector of the present invention has a novel structure, is safe and reliable, and is easy to operate. It requires only a push and a turn, and through sequential locking in the axial and circumferential directions, it provides a reliable, highly sealed electrical connection. It enables circuit connection in situations where one end is crimped with a copper wire and the other end is screwed to a copper busbar, offering the significant advantage of quick connection and disconnection.

[0021] 2) The electrical connector of the present invention is provided with a locking mechanism, which can provide reliable locking force in the connected state, effectively preventing accidental separation due to vibration and impact, enhancing the stability of the circuit connection, and greatly improving the working efficiency of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the external three-dimensional structure of an embodiment of the present invention;

[0023] Figure 2 It is a schematic structural diagram of an embodiment of the present invention;

[0024] Figure 3 yes Figure 2 Schematic diagram of the structure of the steel ball positioning component;

[0025] Figure 4 yes Figure 2 Schematic diagram of the structure of the middle steel ball positioning component 2;

[0026] Figure 5 2 is a schematic diagram of the sliding sleeve structure in an embodiment of the present invention;

[0027] Figure 6 is a longitudinal sectional view of a sliding sleeve according to an embodiment of the present invention;

[0028] Figure 7 This is a schematic structural diagram of a locking sleeve in an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the plug housing structure in an embodiment of the present invention;

[0030] Figure 9 This is a schematic diagram of the socket shell structure in an embodiment of the present invention;

[0031] Figure 10 This is a schematic diagram of the structure of the locking mechanism before it is pushed in according to an embodiment of the present invention;

[0032] Figure 11 This is a schematic diagram of the structure after the locking mechanism is pushed in according to an embodiment of the present invention;

[0033] Figure 12 This is an external schematic diagram of the locking mechanism in an embodiment of the present invention pushed into place;

[0034] Figure 13 It is an external schematic diagram of the locking mechanism in an embodiment of the present invention when it is rotated and locked into place.

[0035] In the figure: 1-plug, 2-socket, 3-locking mechanism, 4-plug shell, 5-pin, 6-cable connector, 7-socket shell, 8-jack, 9-insulating sleeve, 10-expanding ring 1, 11-steel ball positioning component 1, 12-expanding ring 2, 13-steel ball 1, 14-sliding sleeve, 15-locking sleeve, 16-expanding ring 3, 17-steel ball positioning component 2, 18-expanding ring 4, 19-steel ball 2, 20-reducing ring, 21-groove, 22-crown band, 23-O-ring, 24-connecting flange, 25-rubber pad, 26-screw, 27-threaded end cap, 28-straight sleeve, 29-tail nut, 30-tab, 31-slot, 32-limiting slot, 33-sinking slot, 34-locking slot, 35-aligning protrusion, 36-locking groove DETAILED DESCRIPTION

[0036] The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0037] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the specific embodiments required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the specific embodiments described below are some implementation methods of the present invention. For ordinary technicians in this field, other specific embodiments can be obtained based on these specific embodiments without paying any creative work.

[0038] The components of the embodiments of the present invention generally described and shown in the specific embodiments herein can be arranged and designed in countless different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the specific embodiments is not intended to limit the scope of the claimed invention, but is merely representative of selected embodiments of the present invention.

[0039] See Figure 1-13 , is a schematic structural diagram of an embodiment of a push-pull electrical connector of the present invention, comprising a plug 1, a socket 2 and a locking mechanism 3, wherein the plug 1 and the socket 2 are connected by the locking mechanism 3, the plug 1 comprising a plug shell 4, a pin 5 and a cable connector 6, the socket 2 comprising a socket shell 7 and a jack 8, the plug shell 4 and the socket shell 7 are connected with each other in a socket-type manner and provided with a tongue 30 and a slot 31 at corresponding positions to prevent relative rotation, an insulating sleeve 9 is provided between the plug shell 4 and the pin 5 and between the socket shell 7 and the jack 8, the cable connector 6 is a crimping sleeve structure, and the jack 8 is a bent copper busbar connection structure; the plug 1 and the locking mechanism 3 are The pre-assembled assembly, the locking mechanism 3 is connected to the limiting groove 32 on the outer circle of the plug shell 4 through the expansion ring 10, and the locking mechanism 3 can move axially back and forth within the range of the limiting groove 32; after the socket shell 7 and the plug shell 4 are inserted into the extreme position, the locking groove 34 on the outer surface of the socket shell 7 is aligned with the steel ball positioning assembly 11 on the plug shell 4; the steel ball positioning assembly 11 includes the expansion ring 2 12 and the steel ball 13, the steel ball 13 is arranged on the outside of the expansion ring 2 12, the expansion ring 2 12 is located in the groove on the inner wall of the plug shell 4, and multiple steel balls 13 are evenly arranged around the circumference in the opening connected to the groove on the inner wall of the plug shell 4.

[0040] The locking mechanism 3 includes a sliding sleeve 14 and a locking sleeve 15. The locking sleeve 15 is arranged on the outside of the sliding sleeve 14. The sliding sleeve 14 and the locking sleeve 15 are connected by an expansion ring 3 16 and a steel ball positioning assembly 2 17. The steel ball positioning assembly 2 17 includes an expansion ring 4 18 and a steel ball 2 19. The steel ball 2 19 is arranged on the outside of the expansion ring 4 18. The expansion ring 4 18 is located in the groove of the inner wall of the sliding sleeve 14. A plurality of steel balls 2 19 are evenly arranged around the circumference in the grooves of the inner wall of the sliding sleeve 14. When the sliding sleeve 14 moves forward along the plug shell 4 to the limit position, the reducing ring belt 20 provided on the inner wall of the sliding sleeve 14 passes over the steel ball positioning component 17, and the steel ball positioning component 17 corresponds to the sunken groove 33 on the plug shell 4; the inner wall of the locking sleeve 15 is provided with a groove 21 with a stepped bottom at the corresponding position of the steel ball positioning component 17, the locking sleeve 15 rotates 30°, and the steel ball positioning component 17 rotates from the deep groove to the shallow groove to complete the locking.

[0041] In this embodiment, there are six steel balls 13 and 19 distributed around the circumference. A crown band 22 is provided at the mating point between the socket 8 and the pin 5 to ensure reliable contact. At least one O-ring 23 is installed in the forward limit connection area between the plug housing 4 and the sliding sleeve 14 to achieve a seal between the plug housing 4 and the sliding sleeve 14. To ensure sealing, at least one O-ring is also installed between the socket housing 7 and the adjacent insulating sleeve 9.

[0042] The first expansion ring 10, the second expansion ring 12, the third expansion ring 16 and the fourth expansion ring 18 are all C-shaped stainless steel buckles with rectangular cross-sections, which can provide a small amount of diameter deformation to achieve the locking action of the present invention.

[0043] The surface of the locking sleeve 15 is provided with diamond or linear knurling to facilitate operation and prevent slipping; the outer side of the socket shell 7 is provided with a square connecting flange 24, the flange is provided with a rubber pad groove, and a rubber pad 25 is provided in the rubber pad groove to facilitate connection, resist environmental vibration and prevent loosening.

[0044] In the solution of the present invention, in the steel ball positioning assembly 11 and the steel ball positioning assembly 2 17, when not subjected to external force, the expansion ring is in a free diameter state and is completely retracted into the slot in which it is located. At this time, it does not affect the relative movement of adjacent components. When the action trigger position is reached, the steel ball is pressed downward by force, the expansion ring is deformed, and moves downward, thereby jamming the corresponding parts and completing the locking.

[0045] The width of the variable diameter ring belt 20 is 3-6mm, preferably 5mm. The front and rear sides of the variable diameter ring belt 20 at the minimum diameter are both annular bevels, with the same slope on both sides, or the front side slope is smaller than the rear side slope, so that the relevant parts move more smoothly and prevent jamming.

[0046] Pin 5 and cable connector 6 are connected by screws 26. A threaded end cap 27 is installed on the plug housing 4 at the connection point. A straight sleeve 28 and a tail nut 29 connect the rear end of the plug housing 4 to form an L-shaped structure for easy operation. The cable connector 6 is concealed within the straight sleeve 28, enhancing explosion-proof performance.

[0047] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A push-pull electrical connector, comprising a plug, a socket, and a locking mechanism, wherein the plug and the socket are connected by the locking mechanism, wherein the plug comprises a plug housing, a pin, and a cable connector, and the socket comprises a socket housing and a jack, wherein the plug housing and the socket housing are connected in a socket-and-socket manner and are provided with latches at corresponding positions to prevent relative rotation, and insulating sleeves are provided between the plug housing and the pin, and between the socket housing and the jack, respectively, wherein: Specifically also include: The cable connector is a crimped sleeve structure, and the jack is a bent copper busbar connection structure; The plug and the locking mechanism are preassembled. The locking mechanism is connected to the limit groove on the outer circle of the plug shell through the expansion ring. The locking mechanism can move forward and backward along the axial direction within the limit groove. When the socket shell and the plug shell are plugged into their limit positions, the locking groove on the outer surface of the socket shell is aligned with the steel ball positioning assembly 1 on the plug shell; the steel ball positioning assembly 1 includes a second expansion ring and a first steel ball. The first steel ball is arranged outside the second expansion ring, and the second expansion ring is located in the groove on the inner wall of the plug shell. A plurality of first steel balls are evenly arranged around the circumference in the opening connected to the groove on the inner wall of the plug shell. The locking mechanism includes a sliding sleeve and a locking sleeve. The locking sleeve is arranged on the outer side of the sliding sleeve. The sliding sleeve and the locking sleeve are connected by an expansion ring 3 and a steel ball positioning assembly 2. The steel ball positioning assembly 2 includes an expansion ring 4 and steel balls 2. The steel balls 2 are arranged on the outer side of the expansion ring 4. The expansion ring 4 is located in the groove on the inner wall of the sliding sleeve. A plurality of steel balls 2 are evenly arranged around the circumference in the openings connected to the groove on the inner wall of the sliding sleeve. The sliding sleeve is provided with an alignment protrusion, and the locking sleeve is provided with an alignment groove. The alignment protrusion has two positions in the alignment groove, namely a release position and a locking position. When the sliding sleeve moves forward to the extreme position along the plug shell, the diameter-reducing ring belt provided on the inner wall of the sliding sleeve passes over the steel ball positioning component 2, and the steel ball positioning component 2 corresponds to the sunken groove on the plug shell; the inner wall of the locking sleeve is provided with a groove with a stepped bottom corresponding to the steel ball positioning component 2, and the locking sleeve rotates 15-30 degrees, and the steel ball positioning component 2 rotates from the deep groove to the shallow groove to complete the locking and fixing.

2. A push-pull electrical connector according to claim 1, characterized in that: The number of the first steel ball and the second steel ball is 6-12 distributed around the circumference.

3. The push-pull electrical connector according to claim 1, characterized in that: A crown band is provided at the matching position between the socket and the pin to ensure reliable contact.

4. The push-pull electrical connector according to claim 1, wherein: At least one O-ring is provided in the connection area between the plug shell and the sliding sleeve at the forward limit position.

5. The push-pull electrical connector according to claim 1, characterized in that: The first, second, third and fourth expansion rings are all C-shaped stainless steel buckles with rectangular cross-sections.

6. The push-pull electrical connector according to claim 1, characterized in that: The surface of the locking sleeve is provided with diamond-shaped or line-shaped knurling; the outer side of the socket shell is provided with a square connecting flange, and the flange is provided with a rubber pad groove.

7. The push-pull electrical connector according to claim 1, characterized in that: In the steel ball positioning assembly 1 and the steel ball positioning assembly 2, when not subjected to external force, the expansion ring is in a free diameter state and is completely retracted into the slot.

8. The push-pull electrical connector according to claim 1, characterized in that: The width of the variable diameter ring band is 3-6 mm, and the front side and the rear side of the minimum diameter of the variable diameter ring band are both annular bevels, and the slopes of the two sides are the same, or the slope of the front side is smaller than the slope of the rear side.

9. The push-pull electrical connector according to claim 1, characterized in that: The pin and the cable connector are connected by screws, and an opening is provided on the plug shell at the connection, and a threaded end cover is provided on the opening.

10. The push-pull electrical connector according to claim 1, characterized in that: The tail of the plug shell is connected to the straight sleeve and the tail nut to form an L-shaped structure that is easy to operate, and the cable connector is hidden in the straight sleeve.

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