Insulating puncture type contact element

Abstract

The utility model provides an insulation piercing type contact, which comprises a terminal connecting part, a bending part and a lead piercing part which are integrally formed, the lead piercing part comprises a sheet-shaped body, the bending part is connected with the middle part of the front end of the body, and the bending part is connected with the middle part of the front end of the body. A transition groove, a wire clamping groove and a V-shaped guide opening which are sequentially connected and communicated are formed in the body. According to the utility model, the manufacturing efficiency and the connection stability of the contact element can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to connector technical field, especially, a kind of insulating puncture formula contact piece is related. BACKGROUND

[0002] The connector structure is the connecting structure for connecting cable to electrical equipment.The existing connector structure mainly includes the connector structure for connecting wire by screw, welding and spring etc.However, these connector structures have the following defects: (1) installation operation is complex, and professional tool is needed to complete installation operation; (2) the professional technical requirement of installation operator is high, and professional welding technology or wiring technology is needed; (3) the applicability of connector is poor, and installation and use cost is high; (4) harmful welding gas is generated in the process of welding, which can damage the health of operator; (5) screw connection mode is not resistant to vibration and impact, and in the use scene with vibration or impact, it can lead to wiring loosening, resulting in poor contact, prone to equipment failure and even fire accident etc.In addition, the important connecting piece in the connector structure is contact piece, and the existing contact piece is formed by split form, such as welding, riveting etc., which can increase the manufacturing time of contact piece and reduce the stability of contact piece, and further reduce the assembly efficiency and stability of connector structure. SUMMARY

[0003] In view of the above technical problems, the technical scheme adopted by the utility model is:

[0004] The utility model embodiment provides a kind of insulating puncture formula contact piece, including integrally-formed terminal connecting portion, bending portion and wire puncture portion, the wire puncture portion includes sheet-shaped body, the bending portion is connected with the middle part of the front end of the body, transition slot, wire clamping groove and V-shaped guide opening are formed on the body and are connected and communicated in sequence.

[0005] The utility model at least has the following beneficial effects:

[0006] The contact piece provided by the utility model embodiment can save the manufacturing time of jack contact piece and improve the stability of contact piece by integrally-formed mode, and further can improve the assembly efficiency and connection stability of connector.

[0007] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the utility model, and is not used to limit the scope of the utility model. Other features of the utility model will become easy to understand through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0008] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the structure of a contact element provided in an embodiment of the present invention;

[0010] Figure 2 This is a schematic diagram of the contact element provided in another embodiment of the present invention;

[0011] Figure 3 This is a schematic diagram of a connector structure provided in an embodiment of the present invention;

[0012] Figure 4 for Figure 3 A sectional view;

[0013] Figure 5 A schematic diagram showing the connection between the socket contact and the wire;

[0014] Figure 6 and Figure 7 This is a schematic diagram of the clamping structure;

[0015] Figure 8 This is a schematic diagram of the structure for connecting the nut;

[0016] Figure 9 This is a schematic diagram of the structure of the socket insulator;

[0017] Figure 10 This is a schematic diagram of a connector structure provided in another embodiment of the present invention. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. The use herein of the terms "and / or" includes a set of one or more associated listed items.

[0020] (Embodiment One)

[0021] The utility model embodiment provides a kind of insulation puncture type contact piece, as shown in Figure 1 And Figure 2 The contact piece can include integrally formed terminal connecting portion 21, bending portion 22 and wire puncture portion 23.

[0022] In an illustrative embodiment, the terminal connecting portion 21 can be a jack structure, as shown in Figure 1 In another illustrative embodiment, the terminal connecting portion 21 can be a pin structure, as shown in Figure 2

[0023] The wire puncture portion 23 includes a sheet-shaped body, and the bending portion 22 can be a sheet-shaped structure connected to the middle of the front end of the body, and the body has a transition groove 2301, a wire clamping groove 2302 and a V-shaped guide opening 2303 connected and communicated in sequence.

[0024] In the utility model embodiment, the bending portion 22 is inclined from the terminal connecting portion to the wire puncture portion. The bending angle of the bending portion is the included angle between the straight line where the bending portion is located and the straight line where the terminal connecting portion is located, which is an acute angle, and the specific angle can be set based on actual needs.

[0025] In an illustrative embodiment, the included 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.

[0026] Preferably, θ1 = acr(6 × L × F 0 / σ max × B × H 2 ), wherein L refers to the length of the bending portion, F 0 refers to the average pulling force of the user pulling out the wire puncture portion 23 from the jack insulator and the shell, B refers to the width of the bending portion 22, H refers to the thickness of the bending portion 22, σ max refers to the ultimate strength of the material used for the bending portion 22; and θ2 = 0.

[0027] In the utility model embodiment, F 0 ​= mean (F1+F2+…+F i +…+F n ), where F i is the pulling force required for the i-th user to pull the wire piercing portion 23 out of the jack insulator and the shell, i is 1 to n, n is the number of users, and mean() represents the average value.

[0028] In the embodiment of the utility model, the bending angle of the bending portion meeting the above conditions can improve the tensile property of the wire piercing portion.

[0029] The bending portion 22 is used to make the wire piercing portion and the terminal connecting portion not on 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 through the bending portion, so as to facilitate the adjustment of the angle and position distribution of the wire piercing portion, and further improve the application range of the connector structure.

[0030] In the embodiment of the utility model, 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 outer skin of the wire and clamp the wire core. The wire clamping groove 2302 can cooperate with wires of various cross-sectional areas, which can improve the application range of the connector. The width of the wire clamping groove 2302 can be determined based on the diameter of the clamped wire core. In an exemplary embodiment, the width w of the wire clamping groove and the diameter d of the clamped wire core satisfy the following relationship: w = d x k, 0 < k < 1, preferably, 0.5 ≤ k ≤ 0.8, more preferably, 0.6 ≤ k ≤ 0.65. In this way, sufficient piercing strength and clamping force can be provided, and damage to the wire core can be reduced.

[0031] In the embodiment of the utility model, the contact piece can be made of copper alloy and can be manufactured by one-piece stamping. This one-piece forming method can save the manufacturing time of the jack contact piece and improve the stability of the contact piece, thereby improving the assembly efficiency and stability of the connector.

[0032] (Example two)

[0033] The embodiment of the utility model provides a connector structure, as shown in Figures 3 to 5 The connector structure can include a connecting nut 2, a jack insulator 1, a shell 4, a locking nut 8, m jack contact pieces 3, a clamping structure 5, and a cable sealing ring 7.

[0034] One end of the socket insulator 1 is inserted into the connecting nut 2, and the other end is connected to the first end of the outer shell 4. The second end of the outer 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 outer shell 4, and the cable clamping end is inserted into the locking nut 8. The cable sealing ring 7 is disposed in the cable clamping end. The cable 20 with m exposed wires passes through the cable sealing ring and is clamped and fixed in the cable sealing ring. The wire 24 is clamped and fixed on the wire clamping end.

[0035] Among them, the socket contact 3 is Figure 1 The terminal connection portion of the socket contact 3 shown is inserted into the socket insulator, and the wire piercing portion of the socket contact 3 passes through the outer shell and is connected to the wire clamping end. It pierces the corresponding wire to make an electrical connection with the corresponding wire.

[0036] In this embodiment of the utility model, m≥2, and m can be set according to actual needs. Preferably, 2≤m≤8.

[0037] In this embodiment of the invention, the cable sealing ring 7 can be a rubber ring. The outer shell 4 and the socket insulator 1 can be assembled into a whole by ultrasonic welding. The outer shell 4 is provided with external threads, and the locking nut 8 is provided with internal threads. The locking nut and the outer shell are assembled and connected together by the internal and external threads.

[0038] Further, in this embodiment of the present invention, the socket insulator 1 is provided with a socket adapted to the front end portion (including the terminal connection portion and the bending portion) of the socket contact, and the outer shell 4 is provided with a through hole for the wire piercing portion to pass through. 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 outer 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 front end of the body; the second stop structure includes a second stop groove (not shown) provided in the outer shell and a second stop portion 2305 provided on the body. Figure 3 As shown, the second stop portion 2305 is connected to the front end of the main body and is inclined relative to the main body. The second stop portion is located between the first stop portion and the transition groove. Specifically, the second stop portion 2305 can be a tongue structure, which can be obtained by opening a square hole on the main body that connects to the main body on one side.

[0039] When the socket contact is inserted into the socket insulator and the housing, the first stop part abuts against the first stop groove, and the second stop part abuts against the second stop groove, thereby achieving the front and rear positioning of the socket contact and thus fixing the socket contact.

[0040] In this embodiment of the invention, the clamping structure may be made of plastic.

[0041] Furthermore, such as Figure 3 , Figure 6 and Figure 7 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. A sealing element 6 is provided on the wire clamping base. The sealing element 6 may be an O-ring rubber seal, disposed within a groove in the wire clamping base 51, with the wire diameter of the sealing element 6 being greater than the depth of the groove. When the wire clamping end is inserted into the housing, the inner wall of the housing compresses the sealing element 6, achieving a dustproof and waterproof seal.

[0042] The wire clamping cylinder 52 is provided with m wire clamping parts along the circumferential direction. Each wire clamping part includes a first inclined part 53 and a second inclined part 54 that are inclined outward relative to the axial direction of the wire clamping cylinder. The first inclined part 53 and the second inclined part 54 are spaced apart, and the included angle between the first inclined part 53 and the second inclined part 54 is greater than 90° but less than 180°.

[0043] The first inclined portion 53 has a first inclined guide surface 5301 at its top and a first groove 5302, a first side surface 5303, and a first notch 5304 connected in sequence on its side. The second inclined portion has a second inclined guide surface 5401 at its top and a second groove 5402, a second side surface 5403, and a second notch 5404 connected in sequence on its side. The first and second inclined guide surfaces cooperate to form a V-shaped guide channel, and the first and second grooves cooperate to form a flared channel. The first and second side surfaces are parallel to the axial direction of the first fixed end and cooperate to form a clamping channel. The first and second notches cooperate to form a notch portion. The wire slides into the flared channel through the V-shaped guide channel and then slides down and is clamped in the clamping channel. The flared channel is wider than the clamping channel. The flared channel reduces the force required to press the conductor in, facilitating its entry into the clamping channel. The notch is wider than both the clamping channel and the flared channel, providing clamping force to the clamping channel, which clamps the conductor by deforming. The first and second inclined portions reduce the opening of the clamping channel when the conductor retracts, thereby increasing the clamping force and preventing the conductor from detaching from the clamping channel.

[0044] Furthermore, the conductor clamping cylinder 52 is also provided with a limiting protrusion 59, which is used to limit the cable clamped at the cable clamping end. Specifically, it is used to block the insulation sheath at the stripped part of the cable, restrict the cable from moving in the opposite direction to the clamping channel, maintain the length of the exposed conductor, and prevent the conductor from generating outward pushing force at the clamping channel, thus preventing the conductor from coming off.

[0045] Furthermore, the cable clamping end includes a cable clamping base 55 and an annular clamping portion 56 connected to the cable clamping base. The cable clamping base 55 is provided with an annular protrusion 57 having a notch 58. 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, where w0 can be preset, 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 removed first. When the internal thread of the locking nut 8 disengages from the external thread on the outer shell 4, the locking nut 8 can be pulled directly, pulling out the clamping structure without other auxiliary tools, which is convenient for operators to disassemble the connector.

[0046] Furthermore, the annular clamping part 56 includes a plurality of strip-shaped clamping members spaced apart in the circumferential direction and extending in the axial direction, i.e., the annular clamping part is formed as a claw structure. During the assembly of the locking nut 8, the inclined inner wall of the locking nut presses against the plurality of clamping members, and the pressure-bearing ends of the plurality of clamping members tighten inward, pressing against the outer wall of the cable sealing ring, causing the cable sealing ring to deform. The deformed inner wall of the cable sealing ring presses against the cable, achieving a dustproof and waterproof seal.

[0047] Furthermore, the wire clamping end and the outer shell are connected by a guide structure, such as... Figure 2 As shown, the guide structure includes a guide protrusion 9 disposed on the wire clamping cylinder and a guide groove 10 disposed inside the housing and adapted to the guide protrusion 9. The guide protrusion 9 is disposed between two adjacent wire clamping parts.

[0048] Furthermore, a limiting groove 10 is provided in the wire clamping end for inserting the wire piercing part and limiting the wire piercing part.

[0049] When the clamping structure is installed into the housing, the guide protrusion and guide groove are aligned so that the sheet-like guide connection on the socket contact can be smoothly inserted into the limiting groove on the clamping structure. After the clamping structure is installed into the housing, the guide protrusion and guide groove act as a limit, preventing the clamping structure from rotating and providing a stable and uniform piercing pressure when the sheet-like guide connection pierces the insulation layer of the wire.

[0050] Furthermore, in this embodiment of the invention, during the connection process between the locking nut and the housing, the wire 24 is guided and embedded into the clamping groove through the V-shaped guide opening 2303. Specifically, during the tightening of the locking nut, the wire piercing part is inserted into the limiting groove of the clamping structure, the wire is cut by the wire piercing part through 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 into the clamping channel, communicating with the wire piercing parts on both sides. Since the wire is fixed on the clamping structure, connecting the wire during the tightening of the locking nut reduces the professional skill requirements for operators, improves wiring quality, and enhances wiring stability. In addition, the clamping groove provides a continuous clamping force to the conductor core, while the limiting groove provides a holding force to the wire piercing part, ensuring that the clamping groove always clamps the conductor core. Even under the influence of impact and vibration, there is still a strong clamping force, thus maintaining conductor continuity and increasing the connector's vibration and impact resistance.

[0051] Furthermore, such as Figure 4 As shown, the locking nut 8 is provided with a plurality of inserts 11, which are used to fit into the gap between two adjacent clamping members. The inserts 11 may be tapered protrusions. When the locking nut is tightened by internal thread rotation, the inserts will fit into the gap between two adjacent clamping members, making it difficult for the locking nut to rotate back after tightening, thereby preventing the locking nut from loosening.

[0052] Furthermore, such as Figure 8 and Figure 9 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. A second protrusion 14 is formed on the socket insulator 1. The diameter of the first circumferential protrusion 12 is smaller than the diameter of the second circumferential protrusion 14. The connecting nut 2 and the socket insulator 1 are assembled into one piece by pressing the second protrusion 14 to deform it.

[0053] 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 in direction, and the first protrusions and the second protrusions cooperate with each other to form an anti-loosening structure. After the connecting nut 2 is tightened to the external thread end of the other end connector, the anti-loosening structure can prevent the connection from loosening due to the fact that the retraction force of the connecting nut is less than the elastic deformation force that causes the anti-loosening structure to retract further, thereby increasing the vibration and impact resistance of the connector.

[0054] Furthermore, such as Figure 3As shown, the outer periphery of the connecting nut 2 has a textured anti-slip structure and an external hexagonal structure located to the right of the textured anti-slip structure. The external hexagonal structure is used to facilitate manual tightening or tightening of the connecting nut with a wrench. The outer periphery of the housing 4 has a textured anti-slip structure and a wrench position for easy tightening with a wrench. The locking nut 8 has a textured anti-slip structure and an external hexagonal structure located to the right of the textured anti-slip structure. The external hexagonal structure is used to facilitate manual tightening or tightening of the locking nut with a wrench.

[0055] (Example 3)

[0056] This utility model embodiment provides a circular connector structure, such as Figure 10 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.

[0057] 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 housing. The second end of the housing 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 housing, and the cable clamping end is inserted into the locking nut. The cable sealing ring is disposed in the cable clamping end. The cable 20 with m exposed wires passes through the cable sealing ring and is clamped and fixed in the cable sealing ring 7. The wire clamping is fixed on the wire clamping end.

[0058] Wherein, the pin contact 18 is Figure 2 The contact shown is a pin contact 18. The terminal connection portion of the pin contact 18 is inserted into the pin insulator. The wire piercing portion of the pin contact 18 passes through the housing and is connected to the wire clamping end. It pierces the corresponding wire to make an electrical connection with the corresponding wire. The terminal connection portion is a pin structure.

[0059] The connector structure provided in this embodiment is basically the same as the connector structure provided in the previous embodiments, except that the connecting nut is replaced with a connecting screw, the socket insulator is replaced with a pin insulator, and the terminal connection part is changed from a socket structure to a pin structure. To avoid redundancy, the description of the same structure is omitted.

[0060] In this embodiment, the structures of the pin insulator 17 and the socket insulator 1 are basically the same, except that the connection method with the connecting screw is different. That is, the pin insulator is provided with a socket for the pin insulator to be inserted, and also with a second stop groove that matches the second stop portion on the pin contact.

[0061] In this embodiment, the threaded end face of the connecting screw 16 is provided with a convex-concave portion 1601 along the circumferential direction, and the end of the pin insulator 17 is provided with a concave-convex stop portion 1701 that mates with the convex-concave portion. The convex-concave portion and the concave-convex stop portion cooperate to form an anti-loosening structure. By inserting the connecting screw into the pin insulator, the end of the pin insulator is deformed by squeezing it, exposing the end of the pin insulator, and then the convex-concave portion and the concave-convex stop portion abut against each other. In this embodiment of the present invention, the convex-concave portion and the concave-convex stop portion can be a wavy structure. After tightening the connecting screw, the convex-concave portion of the connecting screw and the concave-convex stop portion on the pin insulator can prevent the connection from loosening due to the retraction force of the connecting screw being less than the elastic deformation force that causes the anti-loosening structure, thereby increasing the vibration and impact resistance of the connector.

[0062] The connector provided in Embodiment 1 of this utility model can be adapted to the connector provided in Embodiment 2. Alternatively, the circular connector structures provided in Embodiments 1 and 2 can be used for data transmission or power supply between electronic devices or industrial equipment, respectively.

[0063] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this utility model can be achieved, and no limitation is imposed herein.

[0064] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An insulating, piercing contact, characterized by, The terminal connecting part, the bending part and the wire piercing part are integrally formed, the wire piercing part comprises a sheet-shaped body, the bending part is connected with the middle part of the front end of the body, and the body is formed with a transition groove, a wire clamping groove and a V-shaped guide opening which are connected and communicated in sequence.

2. The contact of claim 1, wherein, The body is further provided with a first stop part and a second stop part, the first stop part is located on both sides of the bending part, the second stop part is connected with the front end of the body and is provided in an inclined manner relative to the body, and the second stop part is located between the first stop part and the transition groove.

3. The contact of claim 1, wherein, The terminal connecting part is a jack structure.

4. The contact of claim 1, wherein, The terminal connecting part is a pin structure.

5. The contact of claim 1, wherein, The bending part is a sheet structure.

6. The contact of claim 1, wherein, The bending part is formed in an inclined manner from the terminal connecting part to the wire piercing part.

7. The contact of claim 6, wherein, The included angle between the straight line where the bending part is located and the straight line where the terminal connecting part is located is an acute angle.

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