A high protection grade electrical connector

Abstract

The application relates to the technical field of electric connectors, in particular to a high-protection-grade electric connector which comprises a plug-in barrel and a piercing barrel; a plurality of cables are arranged in the plug-in barrel, the plurality of cables are uniformly distributed around the circumference of the plug-in barrel, the cables comprise insulating sheaths and wire cores; the piercing barrel is coaxially connected with the plug-in barrel, a plurality of piercing pieces are uniformly distributed around the circumference of the piercing barrel, the piercing pieces correspond to the cables one by one, and each piercing piece can slide along the axial direction of the piercing barrel; the piercing piece has a cutting groove extending along the length direction of the piercing piece, the cutting groove is V-shaped and is formed by connecting a plurality of arc-shaped grooves, the inner diameter of the arc-shaped groove gradually decreases from the end close to the plug-in barrel to the end far from the plug-in barrel; when the plug-in barrel is connected with the piercing barrel, the end of the cable can slide along the cutting groove and enter the arc-shaped groove matched with the diameter of the cable, so that the high-protection-grade electric connector has a certain universality.

Description

Technical Field

[0001] This invention relates to the field of electrical connector technology, and in particular to a high-protection-level electrical connector. Background Technology

[0002] High-protection-level electrical connectors typically employ puncture-resistant connectors, which can maintain a stable connection even under harsh environments such as high temperatures and vibrations.

[0003] For example, patent document CN119764878B discloses an anti-loosening electromechanical connector, including a coaxially inserted ferrule and a piercing tube. Multiple cables are held inside the ferrule, with the ends of the cables extending radially along the ferrule and evenly distributed around its circumference. The piercing tube has multiple piercing tabs, each corresponding to a cable and extending axially along the tube. Cutting sections, clamping sections, and conductive sections on the piercing tabs sequentially contact the cables, with the cutting sections cutting the cable's insulation to expose the core. However, this connector can only accommodate cables of specific sizes and types, lacking versatility and thus inconvenient to use. Summary of the Invention

[0004] Therefore, it is necessary to provide a high-protection-level electrical connector to address the current technical problems of poor versatility and inconvenience in use of electrical connectors.

[0005] The above objectives are achieved through the following technical solutions:

[0006] A high-protection-level electrical connector includes a ferrule and a piercing sleeve. Multiple cables are threaded inside the ferrule, evenly distributed around its circumference, with each cable's end extending radially from the ferrule. Each cable includes an insulating sheath and a core. The piercing sleeve is coaxially aligned with the ferrule. Multiple piercing tabs are evenly distributed around the ferrule's circumference inside the piercing sleeve, each corresponding to a cable. The length of each piercing tab extends axially from the piercing sleeve, and each tab can pierce along the cable. The piercing tube slides axially; the piercing disc has a cutting groove extending along its length, the cutting groove is V-shaped and formed by multiple arc-shaped grooves connected together, the axis of the arc-shaped groove extends radially along the piercing tube, and the inner diameter of the arc-shaped groove gradually decreases from the end near the insert cylinder to the end away from the insert cylinder; when the insert cylinder is connected to the piercing tube, the end of the cable can slide along the cutting groove and enter the arc-shaped groove matching its diameter, so that the core of the cable can be electrically connected to the piercing disc after the insulation sheath of the cable is pierced.

[0007] Furthermore, the puncture cylinder is provided with a plurality of locking members in the circumferential direction. Each locking member corresponds to a puncture piece. Each locking member is used to restrict the sliding of each puncture piece. Each locking member includes a locking bolt extending radially along the puncture cylinder. The end of the locking bolt is provided with a clamping sleeve. The movement of the locking bolt along the radial direction of the puncture cylinder can cause the clamping sleeve to press against the puncture piece, thereby restricting the sliding of the puncture piece.

[0008] Furthermore, the clamping sleeve has a hollow structure and can extend and retract radially along the puncture cylinder.

[0009] Furthermore, the clamping sleeve is a rubber sleeve.

[0010] Furthermore, the piercing piece is provided with an arc-shaped elongated hole extending along its length direction. The arc-shaped elongated hole is located at the end of the piercing piece away from the insert cylinder. A limiting pin is provided on the piercing cylinder. The limiting pin extends radially along the piercing cylinder and can be inserted into the arc-shaped elongated hole.

[0011] Furthermore, the bottom of the cutting groove is connected to a circular connecting hole, the axis of which extends radially along the piercing cylinder.

[0012] Furthermore, the insert cylinder has a mounting cylinder that rotates coaxially inside, and the mounting cylinder can slide along the axial direction of the insert cylinder. The end of the mounting cylinder away from the piercing cylinder has an inner conical surface. The cable passes through the interior of the mounting cylinder. A rubber ring is fixedly provided on the inner wall of the insert cylinder. The rubber ring is located on the side of the mounting cylinder away from the piercing cylinder and is correspondingly provided with the mounting cylinder in the axial direction of the insert cylinder. An annular spring is provided on the side of the rubber ring facing the mounting cylinder. The annular spring can be inserted into the inner conical surface, thereby keeping the mounting cylinder and the insert cylinder coaxially engaged.

[0013] Furthermore, the piercing cylinder is provided with a threaded hole, and the locking bolt is threadedly engaged in the threaded hole. The outer circumference of the piercing cylinder is provided with a scale line corresponding to the position of the threaded hole, and the locking bolt is provided with a marking line. The marking line and the scale line cooperate to indicate the rotation angle of the locking bolt.

[0014] Furthermore, the center of the piercing tube is provided with a battery core, which is electrically connected to the wires on the piercing tube. Multiple conductive copper plates are distributed around the circumference of the battery core, and the multiple conductive copper plates are simultaneously electrically connected to the battery core. Moreover, the conductive copper plates correspond one-to-one with the piercing plates and are electrically connected.

[0015] Furthermore, the inner circumferential surface of the insert cylinder is provided with internal threads, and the outer circumferential surface of the piercing cylinder is provided with external threads, and the insert cylinder and the piercing cylinder are connected by threads.

[0016] The beneficial effects of this invention are:

[0017] The high-protection-level electrical connector provided by the present invention, firstly, by setting arc-shaped grooves with different inner diameters in the cutting groove of the piercing plate, cables of different sizes and types can be respectively inserted into the arc-shaped grooves that match their diameters, thus giving the high-protection-level electrical connector a certain degree of versatility.

[0018] Secondly, when it is necessary to make the conductive contact between a cable and the piercing plate more secure, the corresponding locking bolt is moved radially along the piercing cylinder to press the piercing plate into place. Then, the insert cylinder is moved reciprocally relative to the piercing cylinder along the axial direction of the insert cylinder. This allows the end of the cable to move reciprocally relative to the arc groove on the piercing plate, enabling the piercing plate to pierce the insulation of the cable and rub against the wire core. This changes the point contact between the piercing plate and the wire core into a line contact, increasing the conductive contact area between the piercing plate and the cable, thereby enhancing the stability of the conductive connection. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a high-protection-level electrical connector provided in an embodiment of the present invention;

[0020] Figure 2 A cross-sectional view of a high-protection-level electrical connector provided in an embodiment of the present invention. Figure 1 (The piercing tube and the insert tube are in the first state);

[0021] Figure 3 for Figure 2 Enlarged view of the structure at point X;

[0022] Figure 4 for Figure 2 Enlarged view of the structure at point Y in the middle;

[0023] Figure 5 A cross-sectional view of a high-protection-level electrical connector provided in an embodiment of the present invention. Figure 2 (The piercing tube and the insert tube are in the second state);

[0024] Figure 6 for Figure 5 Enlarged view of the structure at point Z;

[0025] Figure 7 This is a schematic diagram of the puncture tab in a high-protection-level electrical connector provided in an embodiment of the present invention.

[0026] in:

[0027] 100. Wire; 210. Piercing tube; 2101. Scale; 211. External thread; 212. Battery cell; 213. Locking bolt; 2131. Marking line; 214. Piercing disc; 2141. Arc-shaped elongated hole; 2142. Arc-shaped groove; 2143. Circular connecting hole; 215. Compression sleeve; 216. Conductive copper sheet; 217. Limiting pin; 220. Insert cylinder; 221. Internal thread; 222. Mounting cylinder; 2221. Inner conical surface; 223. Ring spring; 224. Rubber ring; 300. Cable; 301. Wire core; 302. Insulation sheath. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0029] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] like Figures 1 to 7As shown, an embodiment of the present invention provides a high-protection-level electrical connector, including a ferrule cylinder 220 and a piercing cylinder 210; multiple cables 300 are threaded through the ferrule cylinder 220, the cables 300 are evenly distributed around the circumference of the ferrule cylinder 220, and the ends of each cable 300 extend radially along the ferrule cylinder 220; each cable 300 includes an insulating sheath 302 and a wire core 301; the piercing cylinder 210 is used for coaxial docking with the ferrule cylinder 220, and multiple piercing tabs 214 are evenly distributed around its circumference inside the piercing cylinder 210. Each piercing tab 214 corresponds to a cable 300. The length of each piercing tab 214 extends along the axial direction of the piercing cylinder 210, and each piercing tab 214 can slide along the axial direction of the piercing cylinder 210. Each piercing tab 214 has a cutting groove extending along its length direction. The cutting groove is V-shaped and is formed by connecting multiple arc-shaped grooves 2142. The axis of the arc-shaped grooves 2142 extends radially along the piercing cylinder 210, and the inner diameter of the arc-shaped grooves 2142 gradually decreases from the end near the insert cylinder 220 to the end away from the insert cylinder 220.

[0032] When the insert cylinder 220 is connected to the piercing cylinder 210, the end of the cable 300 can slide along the cutting groove and enter the arc-shaped groove 2142 that matches its diameter, so that the core 301 of the cable 300 can be electrically connected to the piercing piece 214 after the insulation sheath 302 of the cable 300 is pierced.

[0033] In this way, cables 300 of different sizes and types can be inserted into the arc-shaped grooves 2142 on the piercing plate 214 that match their diameter, making the high-protection-level electrical connector have a certain degree of versatility and easy to use and process.

[0034] Furthermore, the puncture cylinder 210 is provided with a plurality of locking members in the circumferential direction. Each locking member corresponds to a puncture piece 214. Each locking member is used to restrict the sliding of each puncture piece 214. Each locking member includes a locking bolt 213 extending radially along the puncture cylinder 210. The end of the locking bolt 213 is provided with a clamping sleeve 215. The radial movement of the locking bolt 213 along the puncture cylinder 210 can cause the clamping sleeve 215 to press against the puncture piece 214, thereby restricting the sliding of the puncture piece 214.

[0035] When it is necessary to make the conductive contact between a cable 300 and the piercing disc 214 more secure, the corresponding locking bolt 213 is moved radially along the piercing cylinder 210 to press the piercing disc 214 into place by the clamping sleeve 215. Then, the insert cylinder 220 is moved reciprocally relative to the piercing cylinder 210 along the axial direction of the insert cylinder 220. This allows the end of the cable 300 to move reciprocally relative to the arc groove 2142 on the piercing disc 214. This allows the piercing disc 214 to cut through the insulation sheath 302 of the cable 300 and rub against the wire core 301. As a result, the contact between the piercing disc 214 and the wire core 301 changes from point contact to line contact, which increases the conductive contact area between the piercing disc 214 and the cable 300, thereby enhancing the stability of the conductive connection.

[0036] Furthermore, the clamping sleeve 215 has a hollow structure and can extend and retract radially along the piercing cylinder 210. The hollow structure of the clamping sleeve 215 allows it to extend and retract radially along the piercing cylinder 210, thereby clamping and fixing the piercing piece 214.

[0037] Furthermore, the clamping sleeve 215 is a rubber sleeve. The rubber sleeve will not scratch the puncture disc 214, thus preventing damage to the puncture disc 214.

[0038] Furthermore, the piercing piece 214 is provided with an arc-shaped elongated hole 2141 extending along its length direction. The arc-shaped elongated hole 2141 is located at the end of the piercing piece 214 away from the insert cylinder 220. A limiting pin 217 is provided on the piercing cylinder 210. The limiting pin 217 extends radially along the piercing cylinder 210 and can be inserted into the arc-shaped elongated hole 2141.

[0039] By setting the limiting pin 217 and the arc-shaped elongated hole 2141, it is possible to ensure the sliding of the puncture piece 214 and prevent the puncture piece 214 from detaching from the puncture cylinder 210.

[0040] Furthermore, the bottom of the cutting groove is connected to a circular connecting hole 2143, and the axis of the circular connecting hole 2143 extends radially along the piercing cylinder 210.

[0041] The circular connecting hole 2143 facilitates the elastic expansion of the piercing plate 214 under the pressure of the end of the cable 300, so that the end of the cable 300 can enter the arc-shaped groove 2142 that matches its diameter.

[0042] Furthermore, the insert cylinder 220 has a mounting cylinder 222 rotatably mounted coaxially inside, and the mounting cylinder 222 can slide along the axial direction of the insert cylinder 220. The end of the mounting cylinder 222 away from the piercing cylinder 210 has an inner conical surface 2221. The cable 300 passes through the interior of the mounting cylinder 222. A rubber ring 224 is fixedly mounted on the inner wall of the insert cylinder 220. The rubber ring 224 is located on the side of the mounting cylinder 222 away from the piercing cylinder 210 and is correspondingly positioned with the mounting cylinder 222 in the axial direction of the insert cylinder 220. An annular spring piece 223 is provided on the side of the rubber ring 224 facing the mounting cylinder 222. The annular spring piece 223 can be inserted into the inner conical surface 2221, thereby keeping the mounting cylinder 222 and the insert cylinder 220 coaxially engaged. This prevents the insert cylinder 220 from separating from the mounting cylinder 222 while ensuring their coaxial rotational engagement.

[0043] Furthermore, the piercing cylinder 210 is provided with a threaded hole, and the locking bolt 213 is threadedly engaged in the threaded hole. The outer circumferential surface of the piercing cylinder 210 is provided with a scale line 2101 corresponding to the position of the threaded hole, and the locking bolt 213 is provided with a marking line 2131. The marking line 2131 and the scale line 2101 cooperate to indicate the rotation angle of the locking bolt 213.

[0044] The rotation angle of the locking bolt 213 can be observed through the marking line 2131 and the scale line 2101, thereby determining whether the puncture piece 214 is locked.

[0045] Furthermore, the center of the piercing tube 210 is provided with a battery core 212, which is electrically connected to the wire 100 on the piercing tube 210. Multiple conductive copper sheets 216 are distributed around the circumference of the battery core 212. The multiple conductive copper sheets 216 are simultaneously electrically connected to the battery core 212, and the conductive copper sheets 216 correspond one-to-one with the piercing piece 214 and are electrically connected.

[0046] Furthermore, the inner circumferential surface of the insert cylinder 220 is provided with an internal thread 221, and the outer circumferential surface of the piercing cylinder 210 is provided with an external thread 211. The insert cylinder 220 and the piercing cylinder 210 are connected by threads.

[0047] Based on the above embodiments, the usage principle and working process of the embodiments of the present invention are as follows:

[0048] Multiple cables 300 are threaded through the mounting cylinder 222 of the ferrule cylinder 220, so that the ends of the cables 300 extend radially along the ferrule cylinder 220.

[0049] In the initial state, such as Figure 3As shown, the piercing tube 210 and the insert tube 220 are in the first state. At this time, by tightening the locking bolt 213, the clamping sleeve 215 presses the piercing disc 214, thus keeping the piercing disc 214 stationary. Then, the insert tube 220 and the piercing tube 210 are made coaxially aligned and threaded together. Figure 5 As shown, the piercing cylinder 210 and the insert cylinder 220 are in the second state. At this time, the cable 300 inside the insert cylinder 220 corresponds one-to-one with the piercing disc 214 inside the piercing cylinder 210, and the end of the cable 300 gradually enters the arc-shaped groove 2142 of the cutting groove. During this process, the end of the cable 300 is pushed by the arc-shaped groove 2142 on the piercing disc 214, so that the end of the cable 300 drives the mounting cylinder 222 to slide away from the piercing cylinder 210, so that the inner conical surface 2221 of the mounting cylinder 222 squeezes the annular spring 223, and the annular spring 223 contracts inward to squeeze the cable 300. At the same time, the annular spring 223 axially squeezes the rubber ring 224, so that the rubber ring 224 is deformed by pressure and presses the cable 300 and the insert cylinder 220 tightly, realizing the sealed connection between the cable 300 and the insert cylinder 220.

[0050] Then, the insert cylinder 220 is brought closer to the piercing cylinder 210. When the resistance of the insert cylinder 220 increases as it approaches the piercing cylinder 210, it indicates that the end of the cable 300 has entered the arc-shaped groove 2142 with a matching diameter. This arc-shaped groove 2142 can pierce the insulation sheath 302 of the cable 300. By making the insert cylinder 220 reciprocate relative to the piercing cylinder 210, the end of the cable 300 can continuously move closer to or away from the arc-shaped groove 2142 with a matching diameter on the piercing plate 214. This allows the arc-shaped groove 2142 to pierce the insulation sheath 302 and repeatedly cut the internal wire core 301, thereby increasing the contact area between the wire core 301 and the piercing plate 214, and thus enhancing the stability of the conductive connection.

[0051] Then, continue to move the insert cylinder 220 closer to the piercing cylinder 210. When the resistance to movement of the cut cable 300 end increases, loosen the locking bolt 213 so that the clamping sleeve 215 no longer presses against the piercing piece 214, allowing the insert cylinder 220 to continue moving closer to the piercing cylinder 210. At this time, since the cable 300 end re-enters the arc-shaped groove 2142 that matches its diameter, the frictional resistance between the cable 300 end and the arc-shaped groove 2142 is greater than the sliding resistance of the piercing piece 214. This allows the cable 300 end to push the piercing piece 214 away from the insert cylinder 220, preventing the cable 300 end from being cut again. This ensures that the insert cylinder 220 and the piercing piece 214 can be inserted into place. At the same time, since the wire core 301 of the cable 300 is always located in the arc-shaped groove 2142, the conductivity between the piercing piece 214 and the cable 300 is guaranteed.

[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A high protection level electrical connector, characterized in that, The utility model relates to a cable piercing device, comprising: a ferrule barrel, the inside of the ferrule barrel is provided with a plurality of cables, the plurality of cables are uniformly distributed around the circumference of the ferrule barrel, and the end of each cable extends along the radial direction of the ferrule barrel, the cable comprising an insulating sheath and a core; a piercing barrel, the piercing barrel is coaxially connected with the ferrule barrel, a plurality of piercing pieces are uniformly distributed around the circumference of the piercing barrel, the piercing pieces correspond to the cables one by one, the length of the piercing piece extends along the axial direction of the piercing barrel, and each piercing piece can slide along the axial direction of the piercing barrel; the piercing piece has a cutting groove extending along the length direction of the piercing piece, the cutting groove is V-shaped and connected by a plurality of arc grooves, the axis of the arc groove extends along the radial direction of the piercing barrel, and the inner diameter of the arc groove gradually decreases from the end close to the ferrule barrel to the end away from the ferrule barrel; when the ferrule barrel is connected with the piercing barrel, the end of the cable can slide along the cutting groove and enter the arc groove with the same diameter, so that the insulating sheath of the cable is pierced and the core is electrically connected with the piercing piece, a plurality of locking pieces are arranged around the circumference of the piercing barrel, the locking pieces correspond to the piercing pieces one by one, each locking piece is used for limiting the sliding of each piercing piece, the locking piece comprises a locking bolt extending along the radial direction of the piercing barrel, the end of the locking bolt is provided with a pressing sleeve, the movement of the locking bolt along the radial direction of the piercing barrel can press the pressing sleeve to press the piercing piece, so as to limit the sliding of the piercing piece, the pressing sleeve is a hollow structure, the pressing sleeve can expand and contract along the radial direction of the piercing barrel, the piercing piece is provided with an arc-shaped long hole extending along the length direction of the piercing piece, the arc-shaped long hole is located at the end of the piercing piece away from the ferrule barrel, a limiting pin is arranged on the piercing barrel and extends along the radial direction of the piercing barrel, and the limiting pin can be inserted into the arc-shaped long hole, the inside of the ferrule barrel is coaxially provided with a mounting barrel, and the mounting barrel can slide along the axial direction of the ferrule barrel, the end of the mounting barrel away from the piercing barrel has an inner tapered surface, the cable is arranged in the inside of the mounting barrel, the inner wall of the ferrule barrel is fixedly provided with a rubber ring, the rubber ring is arranged on the side of the mounting barrel away from the piercing barrel and corresponds to the mounting barrel in the axial direction of the ferrule barrel, the side of the rubber ring facing the mounting barrel is provided with an annular elastic piece, the annular elastic piece can be inserted into the inner tapered surface, so that the mounting barrel and the ferrule barrel are coaxially matched.

2. The high hazard level electrical connector of claim 1, wherein, The pressing sleeve is a rubber sleeve.

3. The high hazard level electrical connector of claim 1, wherein, The bottom of the cutting groove is connected with a circular connecting hole, and the axis of the circular connecting hole extends along the radial direction of the piercing barrel.

4. The high hazard level electrical connector of claim 1, wherein, The piercing barrel is provided with a threaded hole, the locking bolt is threadedly arranged in the threaded hole, the outer circumferential surface of the piercing barrel is provided with a scale line at the position corresponding to the threaded hole, and the locking bolt is provided with a mark line, the mark line and the scale line can indicate the rotation angle of the locking bolt.

5. The high hazard level electrical connector of claim 1, wherein, The center of the piercing barrel is provided with an electric core, the electric core is electrically connected with the wire on the piercing barrel, a plurality of conductive copper sheets are distributed around the electric core, the plurality of conductive copper sheets are electrically connected with the electric core at the same time, and the conductive copper sheets correspond to the piercing pieces one by one and are electrically connected.

6. The high hazard level electrical connector of claim 1, wherein, The inner circumferential surface of the ferrule barrel is provided with an internal thread, the outer circumferential surface of the piercing barrel is provided with an external thread, and the ferrule barrel and the piercing barrel are connected through the threads.

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