An anti-loosening electrical connector for electromechanical equipment

Abstract

The present invention relates to the technical field of electrical connectors, and particularly relates to a loosening-preventing electrical equipment electrical connector, which comprises a core barrel and a piercing barrel that are coaxially inserted. A plurality of cables are clamped on the core barrel. The ends of the plurality of cables extend along the radial direction of the core barrel and are evenly distributed around the circumferential direction of the core barrel. A plurality of piercing pieces are arranged on the piercing barrel. A clamping groove is arranged at one end of the piercing piece. Inside the clamping groove, a cutting section, a pressing section, and a conductive section are sequentially arranged from bottom to top. The cutting section is used for cutting the insulating outer skin of the cable. The pressing section is used for pressing the insulating outer skin of the cable. The conductive section is used for electrically connecting with the wire core of the cable. A clamping ring is rotatably arranged on the piercing piece, and the clamping ring is in a U shape. In the initial state, the center line of the clamping ring coincides with the center line of the clamping groove, and the clamping ring can be clamped with the insulating outer skin of the cable. The clamping ring can rotate 90°, so that the insulating outer skin is in closer contact with the wire core.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical connectors, and particularly to an anti-loosening electrical equipment electrical connector. Background Art

[0002] The anti-loosening electrical equipment electrical connector is usually a piercing connector. The piercing connector is provided with a clamping piece. The clamping piece has a U-shaped groove, and a tip part is formed inside the U-shaped groove. The tip part is used for cutting the insulating outer skin of the cable and extruding the insulating outer skin.

[0003] However, when extruding the insulating outer skin with this structure, it is easy to cause plastic deformation of the insulating outer skin, resulting in a gap between the insulating outer skin and the wire core, thereby affecting the wrapping effect of the insulating outer skin on the wire core and reducing the electrical conductivity of the cable. Summary of the Invention

[0004] Based on this, in view of the technical problem that the current anti-loosening electrical equipment electrical connector is prone to reducing the electrical conductivity of the cable, it is necessary to provide an anti-loosening electrical equipment electrical connector.

[0005] The above object is achieved by the following technical solutions:

[0006] An anti-loosening electrical equipment electrical connector includes a core barrel and a piercing barrel that are coaxially inserted. A plurality of cables are clamped inside the core barrel. The ends of the plurality of cables extend radially along the core barrel and are evenly distributed around the circumference of the core barrel. The piercing barrel is provided with a plurality of piercing pieces. The piercing pieces correspond to the cables one by one and extend along the axial direction of the piercing barrel. One end of the piercing piece is provided with a clamping groove. The center line of the clamping groove extends along the axial direction of the piercing barrel. Inside the clamping groove, a cutting section, a pressing section, and a conductive section are sequentially arranged along the insertion direction. The cutting section, the pressing section, and the conductive section are successively in contact with the cable. The cutting section is used for cutting the insulating outer skin of the cable. The pressing section is used for pressing the insulating outer skin of the cable. The conductive section is used for electrically connecting with the wire core of the cable. A clamping ring is rotatably arranged on one side of the piercing piece close to the axis of the piercing barrel. The clamping ring is U-shaped. In the initial state, the center line of the clamping ring coincides with the center line of the clamping groove, so that when the conductive section is in contact with the wire core of the cable, the clamping ring is clamped with the insulating outer skin. As the piercing barrel and the core barrel are further inserted, the clamping ring can rotate 90°, so that the insulating outer skin is in closer contact with the wire core.

[0007] Furthermore, the piercing piece is provided with an arc-shaped clamping block, and the clamping ring is provided with an arc-shaped groove. The arc-shaped clamping block can slide along the arc-shaped groove. The clamping ring is further provided with a connecting plate. A tension spring is arranged between the connecting plate and the piercing barrel. The tension spring has a tendency to make the clamping ring rotate 90°.

[0008] Further, a push plate is provided inside the ferrule cylinder. The push plate and the connecting plate are in blocking cooperation in the insertion direction, and the push plate drives the snap ring to rotate through the connecting plate.

[0009] Further, the push plate is rotatably arranged on the ferrule cylinder in one direction through a torsion spring. The snap ring has two connecting arms. After the push plate drives the snap ring to rotate, the connecting arms can drive the push plate to rotate.

[0010] Further, a frustum is provided on the puncturing piece. The frustum is in blocking cooperation with the connecting arm so that the snap ring is kept in the initial state. When the snap ring rotates, the connecting arm can cross over the frustum.

[0011] Further, a limiting block is provided on the puncturing piece. The limiting block can be in blocking cooperation with the connecting arm to limit the rotation angle of the snap ring.

[0012] Further, it is set that the length direction of each puncturing piece is the up-down direction, the thickness direction of the puncturing piece is the front-back direction, and the width direction of the puncturing piece is the left-right direction. The cutting section includes two puncturing knives arranged oppositely left and right. The distance between the two puncturing knives is equal to the maximum diameter of the wire core. The pressing section includes two pressing platforms arranged oppositely left and right. The pressing platform includes two pressing plates arranged at intervals front and back. The two pressing plates can respectively support the insulating outer skin on both sides of the cutting position front and back.

[0013] Further, the conductive section includes two conductive plates arranged oppositely left and right. The conductive plates correspond to the puncturing knives one by one in the up-down direction.

[0014] Further, a conductive column is connected to the puncturing piece. A connecting cylinder is sleeved outside the puncturing cylinder, and the conductive column extends into the connecting cylinder.

[0015] Further, a sealing cylinder and a locking cylinder are sleeved outside the cable. Annular sawteeth are provided on both the sealing cylinder and the connecting cylinder. The sealing cylinder and the connecting cylinder are in non-rotating cooperation through the annular sawteeth. The locking cylinder is threadedly connected to the connecting cylinder and is in non-rotating cooperation with the sealing cylinder.

[0016] The beneficial effects of the present invention are:

[0017] For the anti-loosening electrical equipment electrical connector provided by the present invention, since the insulating outer skin of the cable is prone to plastic deformation after being pressed by the pressing section, rotating the snap ring by 90° can drive the insulating outer skin on the side close to the axis of the puncturing cylinder to twist by 90°, making the insulating outer skin not easy to produce plastic deformation, and the insulating outer skin is in closer contact with the wire core, thereby ensuring the wrapping effect of the insulating outer skin on the wire core and further ensuring the conductive performance of the wire core.

[0018] Secondly, by pressing the insulating outer skin on both sides before and after the cutting position through the pressing table, the extrusion of the exposed wire core at the cutting position can be indirectly realized, avoiding the generation of scratches on the surface of the wire core caused by directly crimping the wire core. At the same time, when the wire core enters the conductive section, the pressure can be released, ensuring the electrical conductivity of the wire core and overall improving the electrical conductivity of the anti-loosening electromechanical equipment electrical connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic perspective view of the anti-loosening electromechanical equipment electrical connector provided by an embodiment of the present invention;

[0020] Figure 2 Exploded view of the structure of the anti-loosening electromechanical equipment electrical connector provided by an embodiment of the present invention;

[0021] Figure 3 is Figure 1 side view of;

[0022] Figure 4 is Figure 3 A-A cross-sectional view in;

[0023] Figure 5 is Figure 3 B-B cross-sectional view in;

[0024] Figure 6 Partial structure schematic diagram of the anti-loosening electromechanical equipment electrical connector provided by an embodiment of the present invention;

[0025] Figure 7 is Figure 6 C-C cross-sectional view in;

[0026] Figure 8 is Figure 6 Another perspective view of;

[0027] Figure 9 is Figure 8 D-D cross-sectional view in;

[0028] Figure 10 Schematic diagram of the structure of the piercing piece in the anti-loosening electromechanical equipment electrical connector provided by an embodiment of the present invention;

[0029] Figure 11 Partial structure schematic diagram of the piercing piece in the anti-loosening electromechanical equipment electrical connector provided by an embodiment of the present invention;

[0030] Figure 12 is Figure 5 Enlarged view of the structure at E in;

[0031] Figure 13 is Figure 7 Enlarged view of the structure at F in;

[0032] Figure 14 For Figure 9 the enlarged view of the structure at position G in

[0033] Wherein:

[0034] 101, connecting cylinder; 102, sealing cylinder; 103, locking cylinder; 200, puncturing cylinder; 2011, conductive column; 2012, puncturing piece; 2013, arc-shaped clamping block; 2014, frustum; 2015, limiting block; 2016, cutting section; 2017, pressing section; 2018, conductive section; 202, snap ring; 2021, connecting arm; 2022, connecting plate; 300, ferrule; 301, core wire; 302, insulating sheath; 303, connecting ring; 304, pushing plate; 305, tension spring. Detailed implementation manners

[0035] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present 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 only used to explain the present invention and are not used to limit the present invention.

[0036] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" mentioned in the present invention, unless otherwise clearly defined and limited, both include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0037] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0038] Such as Figures 1 to 14As shown in the figure, an anti-loosening electro-mechanical equipment electrical connector provided by an embodiment of the present invention includes a ferrule cylinder 300 and a piercing cylinder 200 that are coaxially inserted. A plurality of cables are clamped inside the ferrule cylinder 300. The ends of the plurality of cables extend radially along the ferrule cylinder 300 and are evenly distributed circumferentially around the ferrule cylinder 300. A plurality of piercing pieces 2012 are provided on the piercing cylinder 200. The piercing pieces 2012 correspond to the cables one by one and extend along the axial direction of the piercing cylinder 200. A clamping groove is provided at one end of the piercing piece 2012. The center line of the clamping groove extends along the axial direction of the piercing cylinder 200. A cutting section 2016, a pressing section 2017, and a conductive section 2018 are sequentially provided inside the clamping groove along the insertion direction. The cutting section 2016, the pressing section 2017, and the conductive section 2018 come into contact with the cable in sequence. The cutting section 2016 is used to cut the insulating outer skin 302 of the cable. The pressing section 2017 is used to press the insulating outer skin 302 of the cable. The conductive section 2018 is used to conductively connect with the core 301 of the cable. A clamping ring 202 is rotatably provided on one side of the piercing piece 2012 close to the axis of the piercing cylinder 200. The clamping ring 202 is U-shaped. In the initial state, the center line of the clamping ring 202 coincides with the center line of the clamping groove. Thus, when the conductive section 2018 contacts the core 301 of the cable, the clamping ring 202 is clamped with the insulating outer skin 302. As the piercing cylinder 200 and the ferrule cylinder 300 are further inserted, the clamping ring 202 can rotate 90°, making the contact between the insulating outer skin 302 and the core 301 closer.

[0039] Since the insulating outer skin 302 of the cable is prone to plastic deformation after being pressed by the pressing section 2017, the rotation of the clamping ring 202 by 90° can drive the insulating outer skin 302 on the side close to the axis of the piercing cylinder 200 to twist by 90°, making the insulating outer skin 302 not easily produce plastic deformation, and the insulating outer skin 302 is in closer contact with the core 301, thereby ensuring the wrapping effect of the insulating outer skin 302 on the core 301 and further ensuring the conductive performance of the core 301.

[0040] In an embodiment, an arc-shaped clamping block 2013 is provided on the piercing piece 2012. An arc-shaped groove is provided on the clamping ring 202. The arc-shaped clamping block 2013 can slide along the arc-shaped groove. A connecting plate 2022 is further provided on the clamping ring 202. A tension spring 305 is provided between the connecting plate 2022 and the piercing cylinder 200. The tension spring 305 has a tendency to keep the clamping ring 202 in a state of rotating 90°.

[0041] This design enables the clamping ring 202 to maintain stable guidance during rotation, enabling the clamping ring 202 to rotate 90° smoothly.

[0042] In one embodiment, a push plate 304 is disposed inside the ferrule tube 300. The push plate 304 is in a blocking fit with the connecting plate 2022 in the insertion direction. The push plate 304 drives the snap ring 202 to rotate through the connecting plate 2022. The push plate 304 can drive the snap ring 202 to rotate during the insertion process, so as to ensure that the snap ring 202 can rotate smoothly and drive the insulating sheath 302 to rotate.

[0043] In one embodiment, the push plate 304 is disposed on the ferrule tube 300 to rotate unidirectionally through a torsion spring (not shown in the figure). The snap ring 202 has two connecting arms 2021. After the push plate 304 drives the snap ring 202 to rotate, the connecting arm 2021 can drive the push plate 304 to rotate. By providing a torsion spring on the ferrule tube 300, it is ensured that the push plate 304 can only rotate unidirectionally, thereby avoiding interference of the push plate 304 with the connecting arm 2021 after the snap ring 202 rotates. As Figure 14 shown, the push plate 304 can only rotate upward, and the torsion spring makes the push plate 304 extend in the horizontal direction in the natural state. In this way, when the snap ring 202 is reset, the push plate 304 can be in a blocking fit with the connecting plate 2022.

[0044] In one embodiment, a frustum 2014 is provided on the piercing piece 2012. The frustum 2014 is in a blocking fit with the connecting arm 2021 to keep the snap ring 202 in the initial state. When the snap ring 202 rotates, the connecting arm 2021 can cross over the frustum 2014.

[0045] The frustum 2014 can be formed on the piercing piece 2012 by precision machining, and the connecting arm 2021 is designed reasonably to ensure that it can slide on the frustum 2014. Specifically, the height of the frustum 2014 and the shape of the connecting arm 2021 need to be experimented and adjusted many times to ensure the tightness and smoothness of their fit. The frustum 2014 can be machined from cemented carbide material, and the connecting arm 2021 can be made of a metal material with good elasticity.

[0046] In one embodiment, a limiting block 2015 is provided on the piercing piece 2012. The limiting block 2015 can be in a blocking fit with the connecting arm 2021 to limit the rotation angle of the snap ring 202. The limiting block 2015 can limit the rotation angle of the snap ring 202 to avoid the problem of excessive rotation that the snap ring 202 may occur.

[0047] In one embodiment, the length direction of each piercing piece 2012 is set as the up-down direction, the thickness direction of the piercing piece 2012 is set as the front-back direction, and the width direction of the piercing piece 2012 is set as the left-right direction. The cutting section 2016 includes two piercing knives arranged oppositely left and right, and the distance between the two piercing knives is equal to the maximum diameter of the wire core 301, ensuring that the wire core 301 can just be exposed. The pressing section 2017 includes two pressing platforms arranged oppositely left and right. The pressing platform includes two pressing plates arranged at intervals front and back, and the two pressing plates can respectively support the insulating outer skin 302 on both sides before and after the cutting position. Such a design makes the two pressing plates not contact the wire core 301 exposed at the cutting position, avoiding abrasion of the wire core 301.

[0048] In one embodiment, the conductive section 2018 includes two conductive plates arranged oppositely left and right, and the conductive plates correspond to the piercing knives one by one in the up-down direction. This ensures stable conductive contact between the conductive plates and the wire core 301 exposed at the cutting position.

[0049] Furthermore, the interval between the two pressing platforms left and right is smaller than the interval between the two piercing knives left and right, and is smaller than the interval between the two conductive plates left and right. In this way, by pressing the insulating outer skin 302 on both sides before and after the cutting position through the pressing platforms, indirect extrusion of the wire core 301 exposed at the cutting position can be realized, avoiding scratches on the surface of the wire core 301 caused by directly crimping the wire core 301. At the same time, when the wire core 301 enters the conductive section 2018, the pressure can be released, ensuring the conductive performance of the wire core 301, and overall improving the conductive performance of the anti-loosening electromechanical device electrical connector.

[0050] In one embodiment, the piercing piece 2012 is connected with a conductive column 2011. An adapter sleeve 101 is sleeved outside the piercing cylinder 200, and the conductive column 2011 extends into the adapter sleeve 101. The conductive column 2011 is used for conductive connection with the conductive terminals of other connectors.

[0051] In one embodiment, a sealing cylinder 102 and a locking cylinder 103 are sleeved outside the cable. Both the sealing cylinder 102 and the adapter sleeve 101 are provided with annular sawteeth. The sealing cylinder 102 and the adapter sleeve 101 are in anti-rotation fit through the annular sawteeth. The locking cylinder 103 is threadedly connected with the adapter sleeve 101, and the locking cylinder 103 and the sealing cylinder 102 are in anti-rotation fit. Specifically, splines are provided outside the sealing cylinder 102, and a keyway is provided inside the locking cylinder 103.

[0052] A connecting ring 303 is rotatably provided on the ferrule tube 300, and an external thread is provided on the outer peripheral surface of the piercing tube 200. After the piercing tube 200 is inserted into the ferrule tube 300, the threaded connection between the piercing tube 200 and the ferrule tube 300 is realized by rotating the connecting ring 303. Then, the connecting tube 101 is sleeved on the piercing tube 200, and the sealing tube 102 is sleeved on the ferrule tube 300, so that the connecting tube 101 and the sealing tube 102 are rotationally locked by annular saw teeth. Finally, the locking tube 103 slides along the sealing tube 102, and the locking tube 103 is threadedly connected to the connecting tube 101, thus realizing the assembly of the anti-loosening electromechanical equipment electrical connector.

[0053] Combined with the above embodiments, the usage principle and working process of the embodiments of the present invention are as follows:

[0054] The piercing tube 200 and the ferrule tube 300 are gradually butted, the clamping groove on the piercing piece 2012 gradually approaches the cable, and the cutting section 2016, the pressing section 2017, and the conductive section 2018 on the piercing piece 2012 sequentially contact the cable. The cutting section 2016 cuts the insulating outer skin 302 of the cable, exposing the wire core 301. The pressing section 2017 supports and presses the insulating outer skin 302 on both sides before and after the cutting position, realizing the pressing of the wire core 301. The pressed wire core 301 enters the conductive section 2018 to release pressure and conductively contact the conductive plate, realizing the conductive connection between the piercing piece 2012 and the cable. At the same time, the insulating outer skin 302 on the side of the piercing piece 2012 close to the axis of the piercing tube 200 will enter the snap ring 202. As the piercing tube 200 and the ferrule tube 300 are further butted, the pushing plate 304 on the ferrule tube 300 can push the connecting plate 2022 on the snap ring 202 to move upward, causing the snap ring 202 to rotate clockwise. The connecting arm 2021 of the snap ring 202 crosses the frustum 2014, and under the action of the tension spring 305, the snap ring 202 rotates 90°, until the connecting arm 2021 of the snap ring 202 is in blocking fit with the limiting block 2015. At this time, the arc-shaped block 2013 on the piercing piece 2012 is blocked by the arc-shaped groove of the snap ring 202, thereby realizing the piercing and conductive connection of the cable.

[0055] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, 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, it should be considered as the scope recorded in this specification.

[0056] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An anti-loosening electrical connector for electromechanical equipment, characterized in that: It comprises a coaxially plug-in core barrel and a puncture barrel, wherein a plurality of cables are clamped inside the core barrel, the ends of the plurality of cables extend along the radial direction of the core barrel and are evenly distributed around the circumference of the core barrel, a plurality of puncture pieces are arranged on the puncture barrel, the puncture pieces correspond to the cables one by one and extend along the axial direction of the puncture barrel, a clamping groove is arranged at one end of the puncture piece, the center line of the clamping groove extends along the axial direction of the puncture barrel, a cutting section, a pressing section and a conductive section are arranged inside the clamping groove in sequence along the plug-in direction, and the cutting section, the pressing section and the conductive section contact the cables in sequence The cutting section is used to cut the insulating sheath of the cable, the pressing section is used to press the insulating sheath of the cable, the conductive section is used to be conductively connected to the core of the cable, and the piercing piece is rotatably provided with a clamping ring on one side close to the axis of the piercing tube, and the clamping ring is U-shaped; in the initial state, the center line of the clamping ring coincides with the center line of the clamping groove, so that when the conductive section contacts the core of the cable, the clamping ring is clamped with the insulating sheath; as the piercing tube and the core insertion tube continue to be plugged in, the clamping ring can rotate 90°, so that the insulating sheath is in closer contact with the core.

2. The anti-loosening electromechanical equipment electrical connector according to claim 1, characterized in that: The puncture piece is provided with an arc-shaped block, the clamping ring is provided with an arc-shaped groove, the arc-shaped block can slide along the arc-shaped groove, the clamping ring is also provided with a connecting plate, a tension spring is provided between the connecting plate and the puncture tube, and the tension spring has a tendency to rotate the clamping ring 90°.

3. The anti-loosening electromechanical equipment electrical connector according to claim 2, characterized in that: A push plate is provided inside the core inserting tube, and the push plate is engaged with the connecting plate in a blocking manner in the plugging direction, and the push plate drives the clamping ring to rotate through the connecting plate.

4. The anti-loosening electromechanical equipment electrical connector according to claim 3, characterized in that: The push plate is unidirectionally rotatably arranged on the core inserting tube through a torsion spring, and the clamping ring has two connecting arms. After the push plate drives the clamping ring to rotate, the connecting arms can drive the push plate to rotate.

5. The anti-loosening electromechanical equipment electrical connector according to claim 4, characterized in that: The puncture piece is provided with a round table, and the round table cooperates with the connecting arm to keep the clamp ring in the initial state. When the clamp ring rotates, the connecting arm can go over the round table.

6. The anti-loosening electromechanical equipment electrical connector according to claim 5, characterized in that: The puncture piece is provided with a limit block, and the limit block can cooperate with the connecting arm to stop, so as to limit the rotation angle of the clamping ring.

7. The anti-loosening electromechanical equipment electrical connector according to claim 1, characterized in that: The length direction of each puncture piece is set to be the up-and-down direction, the thickness direction of the puncture piece is set to be the front-and-back direction, and the width direction of the puncture piece is set to be the left-and-right direction. The cutting section includes two puncture knives arranged opposite to each other on the left and right, and the spacing between the two puncture knives is equal to the maximum diameter of the wire core. The pressing section includes two pressing platforms arranged opposite to each other on the left and right, and the pressing platform includes two pressing plates spaced apart from each other in the front and back directions. The two pressing plates can respectively support the insulating outer skin on the front and back sides of the cutting position.

8. The anti-loosening electromechanical equipment electrical connector according to claim 7, characterized in that: The conductive section includes two conductive plates arranged opposite to each other on the left and right sides, and the conductive plates correspond to the puncturing knives in a one-to-one manner in the up and down directions.

9. The anti-loosening electromechanical equipment electrical connector according to claim 1, characterized in that: The puncture piece is connected with a conductive column, the outer part of the puncture tube is sleeved with a connecting tube, and the conductive column extends into the connecting tube.

10. The anti-loosening electromechanical equipment electrical connector according to claim 9, characterized in that: The outer sleeve of the cable is provided with a sealing cylinder and a locking cylinder. The sealing cylinder and the connecting cylinder are both provided with annular serrations. The sealing cylinder and the connecting cylinder are anti-rotationally matched through the annular serrations. The locking cylinder is threadedly connected to the connecting cylinder, and the locking cylinder and the sealing cylinder are anti-rotationally matched.

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