Insulation puncture type circular connector structure

Abstract

The invention relates to the technical field of connectors, and provides an insulating puncture type circular connector structure, which comprises a connecting nut, a jack insulator, a shell, a locking nut, a plurality of jack contact elements, a clamping structure and a cable sealing ring, and is characterized in that the jack insulator is nested in the connecting nut, the jack insulator, the shell and the locking nut are connected in sequence, and the cable sealing ring is arranged in the shell; the clamping structure is arranged in a containing space formed by the shell and the locking nut and used for clamping a wire and a cable, the jack contact piece comprises a terminal connecting part, a bending part and a wire puncturing part which are integrally formed, and the terminal connecting part is of a jack structure. The wiring efficiency and the wiring reliability of the electrical equipment can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of connectors, and in particular to an insulation piercing circular connector structure. Background Art

[0002] The connector structure is a connection structure that connects cables to electrical equipment. Existing connector structures mainly include connector structures that connect wires by means of screws, welding, springs, etc. However, these connector structures have the following defects: (1) The installation operation is complicated and requires professional tools to complete the installation operation; (2) The installation operator has high professional and technical requirements and needs to have professional welding technology or wiring technology; (3) The connector has poor applicability and high installation and use costs; (4) The welding process produces harmful welding gases that will damage the health of the operator; (5) The screw connection method is not resistant to vibration and impact. In the use scenario with vibration or impact, it will cause the wiring to loosen and cause poor contact, which is prone to equipment failure and even fire accidents. Summary of the invention

[0003] In view of the above technical problems, the technical solution adopted by the present invention is: According to a first aspect of the present invention, an insulation piercing circular connector structure is provided, comprising: a connecting nut, a jack insulator, a shell, a locking nut, m jack contacts, a clamping structure and a cable sealing ring, wherein one end of the jack insulator is inserted into the connecting nut, and the other end is connected to the first end of the shell, and the second end of the shell is threadedly connected to the locking nut, and the clamping structure comprises a hollow wire clamping end and a cable clamping end, wherein the wire clamping end is inserted into the first end of the shell, and the cable clamping end is inserted into the locking nut. In the nut, the cable sealing ring is arranged in the cable clamping end, a cable with m exposed wires is inserted into the cable sealing ring and clamped and fixed in the cable sealing ring, the wire is clamped and fixed on the wire clamping end, the socket contact piece includes an integrally formed terminal connecting part, a bending part and a wire piercing part, the terminal connecting part is inserted and arranged in the socket insulator, the wire piercing part passes through the shell and is connected to the wire clamping end and pierces the corresponding wire by piercing to be electrically connected to the corresponding wire, and the terminal connecting part is a socket structure.

[0004] According to a second aspect of the present invention, an insulation piercing circular connector structure is provided, comprising: a connecting screw, a pin insulator, a shell, a locking nut, m pin contacts, a clamping structure and a cable sealing ring, wherein one end of the pin insulator is inserted into the connecting screw, and the other end is connected to the first end of the shell, and the second end of the shell is threadedly connected to the locking nut, and the clamping structure comprises a hollow wire clamping end and a cable clamping end, wherein the wire clamping end is inserted into the first end of the shell, and the cable clamping end is inserted into the locking nut. In the embodiment, the cable sealing ring is arranged in the cable clamping end, a cable with m exposed wires is inserted into the cable sealing ring and clamped and fixed in the cable sealing ring, the wire is clamped and fixed on the wire clamping end, the pin contact piece includes an integrally formed terminal connecting portion, a bending portion and a wire piercing portion, the terminal connecting portion is inserted and arranged in the pin insulator, the wire piercing portion passes through the shell and is connected with the wire piercing portion and pierces the corresponding wire insulation sheath by piercing to be electrically connected to the corresponding wire, and the terminal connecting portion is a pin structure.

[0005] The present invention has at least the following beneficial effects: The circular connector structure provided by the embodiment of the present invention has at least the following advantages: (1) The conduction between the wire and the wire piercing portion is achieved by relying on the locking force of the locking nut, and there is no need to strip or weld the wire, which can further improve the wiring efficiency of the electrical equipment. (2) There is no need for welding and wire stripping operations, which avoids the influence of the operator's professional level on the wiring quality and improves the wiring reliability. (3) Wiring can be performed without welding operations, which is environmentally friendly and energy-saving. (4) The piercing method is suitable for a variety of cable specifications and has a wide range of applications. (5) After the wire piercing portion pierces the wire, it always maintains a certain clamping force on the wire core, and the connection structure adopts an anti-loosening structure design, which can improve the vibration and impact resistance of the connector.

[0006] 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

[0007] 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.

[0008] Figure 1 A schematic structural diagram of a circular connector structure provided by an embodiment of the present invention; Figure 2 for Figure 1 A cross-sectional view of Figure 3 is a schematic diagram of a jack contact; Figure 4 and Figure 5 is a schematic diagram of the clamping structure; Figure 6 is a structural schematic diagram of a connecting nut; Figure 7 It is a schematic diagram of the structure of the jack insulator; Figure 8 A schematic structural diagram of a circular connector structure provided in another embodiment of the present invention. DETAILED DESCRIPTION

[0009] 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.

[0010] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0011] (Example 1) An embodiment of the present invention provides an insulation piercing circular connector structure, such as Figures 1 to 3 As shown, it may include: a connecting nut 2, a socket insulator 1, a housing 4, a locking nut 8, m socket contacts 3, a clamping structure 5 and a cable sealing ring 7.

[0012] Among them, the connecting nut, the jack insulator, the shell and the locking nut are connected in sequence, the clamping structure is arranged in the accommodating space formed by the shell and the locking nut, the cable sealing ring 7 is arranged in the clamping structure 5, the cable 20 with m exposed wires is inserted into the cable sealing ring and clamped and fixed in the cable sealing ring 7, the wires are clamped and fixed on the clamping structure, one end of the jack contact is inserted into the jack insulator 1, and the other end passes through the shell and is connected to the clamping structure 5 and pierces the corresponding wire by puncturing to be electrically connected to the corresponding wire.

[0013] In the embodiment of the present invention, m≥2, m can be set based on actual needs, preferably, 2≤m≤8.

[0014] Furthermore, one end of the jack insulator 1 is inserted into the connecting nut 2, and the other end is connected to the first end of the shell 4, and the second end of the shell 4 is threadedly connected to the locking nut 8. The clamping structure 5 includes a hollow wire clamping end and a cable clamping end, the wire clamping end is inserted into the first end of the shell 4, and the cable clamping end is inserted into the locking nut 8. The cable sealing ring 7 is arranged in the cable clamping end, and the cable 20 with m exposed wires is inserted into the cable sealing ring and clamped and fixed in the cable sealing ring, and the wire 24 is clamped and fixed on the wire clamping end. The jack contact 3 includes an integrally formed terminal connecting part 21, a bending part 22 and a wire piercing part 23, the terminal connecting part is inserted into the jack insulator, the wire piercing part passes through the shell and is connected to the wire clamping end and pierces the corresponding wire by piercing to be electrically connected to the corresponding wire, and the terminal connecting part is a jack structure.

[0015] In the embodiment of the present invention, the cable sealing ring 7 can be a rubber ring. The housing 4 and the jack insulator 1 can be assembled into a whole by ultrasonic welding. The housing 4 is provided with an external thread, and the locking nut 8 is provided with an internal thread. The locking nut and the housing are assembled and connected together by the internal thread and the external thread.

[0016] Furthermore, if Figure 3 As shown, the wire piercing portion 23 includes a sheet-like body, and the bending portion 22 can be a sheet-like structure connected to the middle part of the front end of the body. The body is formed with a transition groove 2301, a wire clamping groove 2302 and a V-shaped guide opening 2303 that are connected and communicated in sequence.

[0017] In the embodiment of the present invention, the bending portion 22 is formed obliquely from the terminal connection portion to the wire piercing portion. The bending angle of the bending portion is an acute angle between the straight line where the bending portion is located and the straight line where the terminal connection portion is located. The specific angle can be set based on actual needs.

[0018] In an exemplary embodiment, the angle θ between the straight line where the bending portion is located and the straight line where the terminal connecting portion is located satisfies the following condition: θ 2 <θ≤θ 1 , where θ 1 Refers to the upper limit of the bending angle, θ 2 It refers to the lower limit of the bending angle.

[0019] Preferably, θ 1 =acr(6×L×F 0 / σ max ×B×H 2 ), where L refers to the length of the bending portion, F0 refers to the average pulling force of the user to pull out the wire piercing portion 23 from the jack insulator and the housing, B refers to the width of the bent portion 22, H refers to the thickness of the bent portion 22, and σ max It refers to the ultimate strength of the material used for the bending portion 22; θ 2 =0.

[0020] In the embodiment of the present invention, F 0 =mean(F 1 +F 2 +……+F i +……+F n ), where F i is the pulling force required for the i-th user to pull out the wire piercing portion 23 from the jack insulator and the housing, i ranges from 1 to n, n is the number of users, and mean() represents the average value.

[0021] In the embodiment of the present invention, the bending angle of the bending portion that meets the above conditions can improve the tensile performance of the wire piercing portion.

[0022] In the embodiment of the present invention, the function of the bending portion 22 is to make the wire piercing portion and the terminal connecting portion not be in the same straight line. Since the spacing between the terminal connecting portions is fixed, the spacing and angle between the wire piercing portions can be changed by the bending portion, so as to facilitate the adjustment of the angle and position distribution of the wire piercing portions, thereby improving the application range of the connector structure.

[0023] In an embodiment of the present invention, the transition groove 2301 is used to increase the elasticity of the wire clamping groove, and the specific size can be set based on actual needs, as long as the elasticity of the wire clamping groove can be increased. The wire piercing portion is used to pierce the insulating sheath of the wire and clamp the wire core. The wire clamping groove 2302 can be matched with wire specifications of various cross-sectional areas, which can increase the applicability of the connector. The width of the wire clamping groove 2302 can be determined based on the diameter of the core of the clamped wire. In an illustrative embodiment, the width w of the wire clamping groove and the diameter d of the core of the clamped wire satisfy the following relationship: w=d×k, 0<k<1, preferably, 0.5≤k≤0.8, more preferably, 0.6≤k≤0.65. In this way, sufficient puncture strength and clamping force can be provided, and damage to the wire core can be reduced.

[0024] Furthermore, in the embodiment of the present invention, a socket that is compatible with the front end portion of the socket contact (including the terminal connection portion and the bending portion) is provided in the socket insulator 1, and a through hole for the wire piercing portion to pass through is provided in the shell 4. The wire piercing portion 23 is limited in the socket insulator 1 by a first stop structure, and the wire piercing portion is limited in the shell 4 by a second stop structure. The first stop structure includes a first stop groove (not shown) provided in the socket insulator and two first stop portions 2304 provided on both sides of the bending portion, and the second stop structure includes a second stop groove (not shown) provided in the shell and a second stop portion 2305 provided on the body. Figure 3 As shown, the second stopper 2305 is connected to the front end of the body and is tilted relative to the body, and the second stopper is located between the first stopper and the transition groove. Specifically, the second stopper 2305 can be a tongue-cut structure, which can be obtained by opening a square hole on the body that is connected to the body on one side.

[0025] When the jack contact is inserted into the jack insulator and the housing, the first stop portion conflicts with the first stop groove, and the second stop portion conflicts with the second stop groove, so that the jack contact is positioned front and back, and then the jack contact is fixed.

[0026] In the embodiment of the present invention, the socket contact 1 can be made of copper alloy and can be manufactured by integral stamping. This integral molding method can save the manufacturing time of the socket contact and improve the stability of the contact, thereby improving the assembly efficiency and stability of the connector.

[0027] In the embodiment of the present invention, the clamping structure may be made of plastic material.

[0028] Furthermore, if Figure 1 , Figure 4 and Figure 5 As shown, the wire clamping end may include a wire clamping base 51 and a wire clamping cylinder 52 connected to the wire clamping base, and the wire clamping base is provided with a seal 6. The seal 6 may be an O-type rubber seal ring, which is provided in a groove of the wire clamping base 51, and the wire diameter of the seal 6 is greater than the depth of the groove. When the wire clamping end is inserted into the housing, the inner side wall of the housing squeezes the seal 6 to achieve dustproof and waterproof sealing.

[0029] Among them, m wire clamping parts are arranged on the wire clamping tube 52 along the circumferential direction, and the wire clamping part includes a first inclined part 53 and a second inclined part 54 which are inclined outwardly relative to the axial direction of the wire clamping tube, and the first inclined part 53 and the second inclined part 54 are arranged at intervals, and the angle between the first inclined part 53 and the second inclined part 54 is greater than 90° but less than 180°.

[0030] Among them, the top of the first inclined portion 53 is provided with a first inclined guide surface 5301, the side of the first inclined portion is provided with a first groove 5302, a first side surface 5303, and a first notch 5304 connected in sequence, the top of the second inclined portion is formed with a second inclined guide surface 5401, the side of the second inclined portion is provided with a second groove 5402, a second side surface 5403 and a second notch 5404 connected in sequence, the first inclined guide surface and the second inclined guide surface cooperate to form a V-shaped guide channel, the first groove and the second groove cooperate to form a flaring channel, the first side surface and the second side surface are respectively parallel to the axial direction of the first fixed end and cooperate to form a clamping channel, the first notch and the second notch cooperate to form a notch portion, wherein the wire slides into the flaring channel through the V-shaped guide channel, and then slides down and is clamped in the clamping channel. The width of the expanded channel is greater than the width of the clamping channel, and the expanded channel can reduce the force of pressing the wire into the clamping channel, making it easier for the wire to enter the clamping channel. The width of the notch is greater than the width of the clamping channel and the expanded channel, and is used to provide clamping force for the clamping channel, and the clamping channel clamps the wire by deforming. The first inclined portion and the second inclined portion can make the opening of the clamping channel smaller when the wire retracts, thereby increasing the clamping force and preventing the wire from escaping from the clamping channel.

[0031] Furthermore, a limiting protrusion 59 is also provided in the wire clamping tube 52, which is used to limit the cable clamped at the cable clamping end, specifically for blocking the insulating sheath of the cable stripping point, restricting the cable from moving back to the clamping channel, maintaining the length of the exposed wire, and preventing the wire from generating outward thrust at the clamping channel, thereby preventing the wire from coming off.

[0032] Furthermore, the cable clamping end includes a cable clamping base 55 and an annular clamping portion 56 connected to the cable clamping base, and the cable clamping base 55 is provided with an annular protrusion 57 having a notch 58, and the width w1 of the annular protrusion 57 and the width w2 of the internal thread groove of the locking nut can satisfy the following relationship: w1=w2-w0, w0 can be a preset value, preferably, 0.1mm≤w0≤0.2mm. The notch 58 is used for the thread of the locking nut to be screwed into the annular protrusion. In this way, when disassembling the circular connector structure, the locking nut 8 can be disassembled first. When the internal thread of the locking nut 8 is disengaged from the external thread on the outer shell 4, the locking nut 8 can be directly pulled out to drive the clamping structure to be pulled out without other auxiliary tools, which is convenient for the operator to disassemble the connector.

[0033] Furthermore, the annular clamping portion 56 includes a plurality of strip-shaped clamping members spaced apart in the circumferential direction and extending in the axial direction, that is, the annular clamping portion is formed into a clamping claw structure. During the assembly of the locking nut 8, the inner wall slope of the locking nut squeezes the plurality of clamping members, and the pressed ends of the plurality of clamping members are tightened inward, squeezing the outer side wall of the cable sealing ring, causing the cable sealing ring to deform, and the deformed inner side wall of the cable sealing ring squeezes the cable to achieve dustproof and waterproof sealing.

[0034] Furthermore, the wire clamping end and the housing are connected via a guide structure, such as Figure 2 As shown, the guide structure includes a guide protrusion 9 arranged on the wire clamping cylinder and a guide groove 10 arranged in the shell and matched with the guide protrusion 9. The guide protrusion 9 is arranged between two adjacent wire clamping parts.

[0035] Furthermore, a limiting groove 10 is provided in the wire clamping end for inserting the wire piercing portion and limiting the wire piercing portion.

[0036] When the clamping structure is installed in the shell, the guide protrusion and the guide groove are matched so that the sheet-like guide connection part on the socket contact can be smoothly inserted into the limiting groove on the clamping structure. After the clamping structure is installed in the shell, the guide protrusion and the guide groove play a limiting role so that the clamping structure cannot rotate, and a stable and uniform puncture pressure is provided when the sheet-like guide connection part pierces the insulation layer of the wire.

[0037] Furthermore, in an embodiment of the present invention, during the connection process between the locking nut and the housing, the wire 24 is guided by the V-shaped guide opening 2303 to be embedded in the wire clamping groove. Specifically, during the tightening process of the locking nut, the wire piercing portion is inserted into the limiting groove of the clamping structure, the wire is cut into the wire piercing portion by the V-shaped guide opening, the wire insulation is cut, and the conductor core of the wire is guided by the V-shaped guide opening to be embedded in the clamping channel and is connected to the wire piercing portions on both sides. Since the wire is fixed on the clamping structure, the wire is connected by connecting the wire during the tightening process of the locking nut, which can reduce the professional skill requirements for the operator, improve the wiring quality, and improve the wiring stability. In addition, the wire clamping groove will give the conductor core a continuous clamping force, and the limiting groove will provide a holding force to the wire piercing portion, so that the wire clamping groove always clamps the conductor core, and even under the influence of impact and vibration, there is still a strong clamping force to always keep the conductor connected, which can increase the vibration and shock resistance of the connector.

[0038] Furthermore, if Figure 2As shown, the locking nut 8 is provided with a plurality of embedded portions 11, and the embedded portions 11 are used to be embedded in the gap between two adjacent clamping members. The embedded portions 11 may be in the shape of a conical protrusion, and when the locking nut is locked and rotated through the internal thread, the embedded portions will be embedded in the gap between two adjacent clamping members, so that the locking nut is not easy to retract and rotate after being tightened, thereby preventing the locking nut from loosening.

[0039] Furthermore, if Figure 6 and Figure 7 As shown, one end of the connecting nut 2 is provided with an internal thread, and the other end is provided with a first circumferential protrusion 12, and a second circumferential protrusion 14 is formed on the socket insulator 1, and the diameter of the first circumferential protrusion 12 is smaller than the diameter of the second circumferential protrusion 14, and the second circumferential protrusion 14 is deformed by pressing into the socket insulator 1 so that the connecting nut 2 and the socket insulator 1 are assembled into one.

[0040] Furthermore, the first circumferential protrusion 12 is provided with a plurality of first protrusions 13 protruding in a first direction, and the second circumferential protrusion 14 is provided with a plurality of second protrusions 15 protruding in a second direction, the first direction and the second direction are opposite, and the first protrusion and the second protrusion cooperate with each other to form an anti-loosening structure. After the connecting nut 2 is tightened with the external thread end of the other end of the connector, the anti-loosening structure can prevent the connection from being loosened due to further retreat of the connecting nut because the retreat force of the connecting nut is less than the elastic deformation force causing the anti-loosening structure, and can increase the vibration and impact resistance of the connector.

[0041] Furthermore, if Figure 1 As shown, the outer periphery of the connecting nut 2 is formed with a concavo-convex anti-skid structure and an outer hexagonal structure located on the right side of the concavo-convex anti-skid structure, and the outer hexagonal structure is used to facilitate the operator to manually tighten or use a wrench to tighten the connecting nut. The outer periphery of the housing 4 has a concavo-convex anti-skid structure and a wrench position for convenient wrench tightening, and the wrench position is convenient for the operator to manually tighten or use a wrench to tighten. The outer periphery of the locking nut 8 has a concavo-convex anti-skid structure and an outer hexagonal structure located on the right side of the concavo-convex anti-skid structure, and the outer hexagonal structure is used to facilitate the operator to manually tighten or use a wrench to tighten the locking nut.

[0042] (Example 2) Based on the same inventive concept, another embodiment of the present invention provides an insulation piercing circular connector structure, such as Figure 8 As shown, it may include: a connecting screw 16 , a pin insulator 17 , a housing 4 , a locking nut 8 , m pin contacts 18 , a clamping structure 5 and a cable sealing ring 7 .

[0043] Among them, the connecting screw 16, the jack insulator 17, the shell 4 and the locking nut 8 are connected in sequence, the clamping structure 5 is arranged in the accommodating space formed by the shell and the locking nut, the cable sealing ring 7 is arranged in the clamping structure 5, the cable with m exposed wires is inserted into the cable sealing ring and clamped and fixed in the cable sealing ring 7, the wires are clamped and fixed on the clamping structure, one end of the jack contact is inserted into the pin insulator 17, and the other end passes through the shell and is connected to the clamping structure 5 and pierces the corresponding wire by piercing to be electrically connected to the corresponding wire.

[0044] Furthermore, one end of the pin insulator 17 is inserted into the connecting screw 16, and the other end is connected to the first end of the shell, and the second end of the shell is threadedly connected to the locking nut, the clamping member includes a hollow wire clamping end and a cable clamping end, the wire clamping end is inserted into the first end of the shell, the cable clamping end is inserted into the locking nut, the cable sealing ring is arranged in the cable clamping end, a cable with m exposed wires is inserted into the cable sealing ring and clamped and fixed in the cable sealing ring 7, the wire clamp is fixed on the wire clamping end, the pin contact member 18 includes an integrally formed terminal connecting portion, a bending portion and a wire piercing portion, the terminal connecting portion is inserted into the pin insulator, the wire piercing portion passes through the shell and is connected to the wire clamping end and pierces the corresponding wire by piercing to be electrically connected to the corresponding wire, and the terminal connecting portion is a pin structure.

[0045] The circular connector structure provided in this embodiment is substantially the same as the circular connector structure provided in the previous embodiment, except that the connection nut is changed into a connection screw, the socket insulator is changed into a pin insulator, and the terminal connection portion is changed from a socket structure to a pin structure. To avoid redundancy, the description of the same structure is omitted.

[0046] In this embodiment, the structures of the pin insulator 17 and the socket insulator 1 are basically the same, except for the connection method with the connecting screw, that is, the pin insulator is provided with a socket for inserting the pin insulator, and is also provided with a second stop groove adapted to the second stop portion on the pin contact piece.

[0047] In this embodiment, a concave-convex portion 1601 is provided at the threaded end face of the connecting screw 16 along the circumferential direction, and a concave-convex stopper 1701 matching with the concave-convex portion is provided at the end of the pin insulator 17, and the concave-convex portion and the concave-convex stopper cooperate with each other to form an anti-loosening structure. By inserting the connecting screw into the pin insulator and squeezing the end of the pin insulator, deformation is generated to expose the end of the pin insulator, and then the concave-convex portion abuts against the concave-convex stopper. In the embodiment of the present invention, the concave-convex portion and the concave-convex stopper may be a wavy structure. After tightening the connecting screw, the concave-convex portion of the connecting screw and the concave-convex stopper on the pin insulator can prevent the connection from being loosened due to further retreat of the connecting screw because the retreat force of the connecting screw is less than the elastic deformation force causing the anti-loosening structure, and can increase the vibration and impact resistance of the connector.

[0048] The circular connector structure provided in the first embodiment of the present invention can be compatible with the circular connector structure provided in the second embodiment, and the circular connector structures provided in the first embodiment and the second embodiment can also be used for data transmission or power supply between electronic equipment or industrial equipment respectively.

[0049] 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.

[0050] 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. An insulation piercing circular connector structure, characterized in that: include: A connecting nut, a jack insulator, a shell, a locking nut, m jack contacts, a clamping structure and a cable sealing ring, wherein one end of the jack insulator is inserted into the connecting nut, and the other end is connected to the first end of the shell, and the second end of the shell is threadedly connected to the locking nut, the clamping structure comprises a hollow wire clamping end and a cable clamping end, the wire clamping end is inserted into the first end of the shell, the cable clamping end is inserted into the locking nut, the cable sealing ring is arranged in the cable clamping end, a cable with m exposed wires is inserted into the cable sealing ring and clamped and fixed in the cable sealing ring, the wire clamp is fixed on the wire clamping end, the jack contact comprises an integrally formed terminal connecting portion, a bending portion and a wire piercing portion, the terminal connecting portion is inserted into the jack insulator, the wire piercing portion passes through the shell and is connected to the wire clamping end and pierces the corresponding wire by piercing to be electrically connected to the corresponding wire, and the terminal connecting portion is a jack structure.

2. The insulation piercing circular connector structure according to claim 1, characterized in that: The wire piercing portion includes a sheet-shaped body, the bending portion is connected to the middle part of the front end of the body, and a transition groove, a wire clamping groove and a V-shaped guide opening that are connected and communicated in sequence are formed on the body, wherein during the connection process of the locking nut and the housing, the wire is guided through the V-shaped guide opening and embedded in the wire clamping groove.

3. The insulation piercing circular connector structure according to claim 2, characterized in that: The angle θ between the straight line where the bending portion is located and the straight line where the terminal connecting portion is located satisfies the following condition: θ2<θ≤θ1, wherein θ1 refers to the upper limit value of the bending angle, and θ2 refers to the lower limit value of the bending angle; wherein θ1=acr(6×L×F 0 / σ max ×B×H 2 ), where L refers to the length of the bending portion, F 0 It refers to the average pulling force of the user to pull out the pierced part of the wire from the jack insulator and the shell, B refers to the width of the bent part, H refers to the thickness of the bent part, σ max It refers to the ultimate strength of the material used in the bending portion; θ2=0.

4. The insulation piercing circular connector structure according to claim 2, characterized in that: The wire piercing portion is limited in the jack insulator by a first stop structure, and the wire piercing portion is limited in the shell by a second stop structure, wherein the first stop structure includes a first stop groove arranged in the jack insulator and two first stop portions arranged on both sides of the bending portion, the second stop structure includes a second stop groove arranged in the shell and a second stop portion arranged on the main body, the second stop portion is connected to the front end of the main body and is inclined relative to the main body, and the second stop portion is located between the first stop portion and the transition groove.

5. The insulation piercing circular connector structure according to claim 1, characterized in that: The wire clamping end comprises a wire clamping base and a wire clamping cylinder connected to the wire clamping base, a sealing member is arranged on the wire clamping base, and m wire clamping parts are arranged on the wire clamping cylinder along the circumferential direction, and the wire clamping part comprises a first inclined part and a second inclined part which are arranged outwardly inclined relative to the axial direction of the wire clamping cylinder, the first inclined part and the second inclined part are arranged at intervals, and the angle between the first inclined part and the second inclined part is greater than 90° but less than 180°, the top of the first inclined part is provided with a first inclined guide surface, and the side of the first inclined part is provided with a first groove, A first side surface and a first notch, a second inclined guide surface is formed on the top of the second inclined portion, and a second groove, a second side surface and a second notch are provided on the side of the second inclined portion, which are connected in sequence. The first inclined guide surface and the second inclined guide surface cooperate to form a V-shaped guide channel, and the first groove and the second groove cooperate to form a flaring channel. The first side surface and the second side surface are respectively parallel to the axial direction of the first fixed end and cooperate to form a clamping channel, and the first notch and the second notch cooperate to form a notch portion, wherein the wire slides into the flaring channel through the V-shaped guide channel, and then slides down and is clamped in the clamping channel.

6. The insulation displacement circular connector structure according to claim 1, characterized in that: The cable clamping end includes a cable clamping base and an annular clamping portion connected to the cable clamping base, the cable clamping base is provided with an annular protrusion with a notch, the notch is used for the thread of the locking nut to be screwed into the annular protrusion, and the annular clamping portion includes a plurality of strip clamping members arranged at intervals in the circumferential direction and extending in the axial direction.

7. The insulation displacement circular connector structure according to claim 5, characterized in that: The wire clamping end and the housing are connected via a guide structure, wherein the guide structure comprises a guide protrusion provided on the wire clamping cylinder and a guide groove provided in the housing and adapted to the guide protrusion, wherein the guide protrusion is provided between two adjacent wire clamping portions; A limiting groove is arranged in the wire clamping end, which is used for the wire piercing portion to be inserted and to limit the wire piercing portion.

8. The insulation displacement circular connector structure according to claim 5, characterized in that: The locking nut is provided with a plurality of embedded parts, and the embedded parts are used to be embedded in the gap between two adjacent clamping members; the wire clamping tube is also provided with a limiting protrusion, which is used to limit the cable clamped at the cable clamping end.

9. The insulation displacement circular connector structure according to claim 1, characterized in that: One end of the connecting nut is provided with an internal thread, and the other end is provided with a first circumferential protrusion. A second circumferential protrusion is formed on the socket insulator. The diameter of the first circumferential protrusion is smaller than the diameter of the second circumferential protrusion. The first circumferential protrusion is provided with a plurality of first protrusions protruding in a first direction, and the second circumferential protrusion is provided with a plurality of second protrusions protruding in a second direction. The first direction and the second direction are opposite, and the first protrusion and the second protrusion cooperate with each other to form an anti-loosening structure.

10. An insulation piercing circular connector structure, characterized in that: include: A connecting screw, a pin insulator, a shell, a locking nut, m pin contacts, a clamping structure and a cable sealing ring, wherein one end of the pin insulator is inserted into the connecting screw, and the other end is connected to the first end of the shell, and the second end of the shell is threadedly connected to the locking nut, the clamping structure comprises a hollow wire clamping end and a cable clamping end, the wire clamping end is inserted into the first end of the shell, the cable clamping end is inserted into the locking nut, the cable sealing ring is arranged in the cable clamping end, a cable with m exposed wires is inserted into the cable sealing ring and clamped and fixed in the cable sealing ring, the wire is clamped and fixed on the wire clamping end, the pin contact comprises an integrally formed terminal connecting portion, a bending portion and a wire piercing portion, the terminal connecting portion is inserted into the pin insulator, the wire piercing portion passes through the shell and is connected to the wire clamping end and pierces the corresponding wire by piercing to be electrically connected to the corresponding wire, and the terminal connecting portion is a pin structure.

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