New energy automobile wire harness terminal plugging device

Abstract

The invention relates to the field of wire harness terminal plugging, and particularly discloses a new energy automobile wire harness terminal plugging device, which comprises a mother plugging end and a son plugging end, and also comprises a sleeve and a plugging cylinder, the mother plugging end and the son plugging end are respectively located in the sleeve and the plugging cylinder, the plugging cylinder is sleeved in the sleeve, and the mother plugging end is connected with the son plugging end. The insertion cylinder can slide and rotate relative to the sleeve; a plurality of buffer plates are slidably connected to the sleeve, the buffer plates extend to the outside of the sleeve, straight rods which slidably penetrate through plate bodies of the buffer plates are fixedly assembled outside the sleeve, second springs are arranged outside the straight rods, and the buffer plates can slide and compress the second springs along with the mutual separation of the sleeve and the insertion cylinder. According to the new energy automobile wire harness terminal plugging device, through the synergistic effect of the buffer assembly and the reserved wire harness, dual protection for pulling force is constructed, and the problems of terminal disengagement, contact surface separation and the like caused by pulling are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of wiring harness terminal plugging technology, and more specifically to a wiring harness terminal plugging device for new energy vehicles. Background Technology

[0002] In the field of new energy vehicles, wiring harnesses, as the core carriers of electrical energy and signal transmission, directly determine the reliable operation of the vehicle's power system, control system, and auxiliary functions due to the stability of their terminal connections. During operation, new energy vehicles often face complex operating conditions: on the one hand, vehicle start-stop, acceleration, deceleration, and road bumps cause the wiring harness to continuously endure axial and radial vibrations; on the other hand, vehicle maintenance and assembly, and component displacement during driving can easily lead to unexpected tensile forces on the wiring harness. Therefore, wiring harness terminal connection devices must simultaneously meet three core requirements: vibration resistance, tensile strength prevention, and continuity maintenance.

[0003] However, most existing wiring harness terminal plug-in devices for new energy vehicles adopt a "rigid snap-fit" structure, which fixes the terminals only by static means such as snaps and threads. When the wiring harness is pulled, the pulling force is directly transmitted to the plug-in end, which can easily lead to separation of the terminal contact surface and a decrease in contact pressure, which in turn can cause poor circuit contact and signal interruption. In severe cases, it can even cause terminal deformation and wiring harness breakage, affecting the normal operation of the vehicle. Summary of the Invention

[0004] This invention provides a terminal plugging device for wiring harnesses in new energy vehicles, which aims to solve the problem in related technologies where the tensile force is directly transmitted to the plugging end when the wiring harness is stretched, causing damage to the terminal.

[0005] The present invention provides a new energy vehicle wiring harness terminal plug-in device, comprising: a female plug-in end and a female plug-in end, and further comprising: a sleeve and a plug-in tube, wherein the female plug-in end and the female plug-in end are respectively located inside the sleeve and the plug-in tube, the plug-in tube is sleeved inside the sleeve, and the plug-in tube can slide and rotate relative to the sleeve. Multiple buffer plates are slidably connected to the sleeve. The buffer plates extend to the outside of the sleeve, and a straight rod is fixedly installed on the outside of the sleeve, which slides through the buffer plate. A spring is installed on the outside of the straight rod. The buffer plate can slide and compress the spring as the sleeve and the insert move away from each other. The insert has a collar inside, which can slide and rotate with the insert. The female plug end has a meshing disc on the outside. The collar can apply pressure to the meshing disc and the female plug end by moving away from the insert through the sleeve.

[0006] Preferably, the sleeve and the insert are provided with a clamping ring and a screw ring on the side that is far apart from each other, and the screw ring is threaded to the outside of the clamping ring.

[0007] Preferably, a wire harness is fixedly connected to the side of the female connector away from the male connector, and the wire harness is electrically connected to the female connector. A limit ring is fixedly connected to the outside of the female connector, and a limit frame is fixedly connected to the inside of the sleeve. The female connector is slidably connected to the limit frame.

[0008] Preferably, a wire harness two is fixedly connected to the side of the sub-plug terminal away from the female plug terminal, and the wire harness two is electrically connected to the sub-plug terminal. A limit ring two is fixedly connected to the outside of the sub-plug terminal, and a limit frame two is fixedly connected to the inside of the plug tube. The sub-plug terminal is slidably connected to the limit frame two.

[0009] Preferably, the sleeve has multiple sliding grooves inside, and a buffer groove is provided on one side of the sliding groove. The sliding groove is connected to the corresponding buffer groove, and the buffer plate can be slidably connected in the sliding groove and the buffer groove.

[0010] Preferably, a push plate is slidably connected at the connection between the slide and the buffer groove, and a spring is provided between the push plate and the connection.

[0011] Preferably, multiple cavity rods are hinged to the inner wall of the insert, and a telescopic rod is slidably connected inside the cavity rod. An elastic element is provided between the telescopic rod and the inner cavity of the cavity rod, and the end of the telescopic rod away from the cavity rod is hinged to a collar.

[0012] Preferably, a plurality of meshing blocks are fixedly connected to the collar, and a plurality of positioning grooves are provided on the meshing disc. The positioning grooves are provided with meshing grooves. The meshing blocks and positioning grooves can be engaged with each other as the sleeve and the insert approach each other, and the meshing blocks can mesh with the meshing grooves as the insert rotates.

[0013] The beneficial effects of this invention are: I. By working together with the buffer assembly and the reserved wiring harness, a dual protection against tensile forces is constructed. When the wiring harness is pulled by an external force, the buffer assembly converts the axial tensile force into the elastic potential energy of a spring. At the same time, the reserved wiring harness one in the sleeve and the reserved wiring harness two in the insert can provide buffer for the terminal connection through their own stretching, avoiding the direct transmission of tensile force to the female and male plug terminals. This effectively solves problems such as terminal detachment and contact surface separation caused by pulling, improves the service life of the terminals, and ensures the stable continuity of power transmission and signal control in new energy vehicles.

[0014] 2. The pressure-applying component can be activated synchronously with the pulling action. When the wiring harness is pulled, causing the sleeve and insert to tend to separate, the engaging block drives the collar to move, causing the telescopic rod to compress the elastic element inside the compression chamber. The reaction force of the elastic element can push the female plug end to apply additional pressure towards the male plug end, so that the terminal contact pressure increases synchronously with the pulling force. Even if the pulling causes a slight displacement of the terminal, the increased pressure can still maintain a stable conductive contact surface, avoiding problems such as poor circuit contact and signal interruption, and ensuring the reliable operation of the high-voltage power supply and control system of new energy vehicles. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of the present invention, showing the separation of the sleeve and the insert.

[0017] Figure 3 This is a frontal sectional view of the present invention.

[0018] Figure 4 This is a schematic diagram of the structure of the female connector of the present invention.

[0019] Figure 5 This is a schematic diagram of the sub-plug terminal of the present invention.

[0020] Figure 6 This is a schematic diagram of the sleeve structure of the present invention.

[0021] Figure 7 This is a schematic diagram of the structure of the buffer component of the present invention.

[0022] Figure 8 This is a cross-sectional schematic diagram of the buffer component of the present invention.

[0023] Figure 9 This is a schematic diagram of the insert structure of the present invention.

[0024] Figure 10 yes Figure 9 The enlarged schematic diagram of part B is shown.

[0025] Figure 11 yes Figure 4 The enlarged schematic diagram of part A is shown.

[0026] Figure label: 10. Sleeve; 11. Clamping ring; 12. Threaded ring; 20. Insert sleeve; 30. Female plug-in terminal; 301. Limiting ring one; 31. Wire harness one; 32. Limiting bracket one; 40. Female plug-in terminal; 401. Limiting ring two; 41. Wire harness two; 42. Limiting bracket two; 50. Buffer assembly; 501. Slide groove; 502. Buffer groove; 503. Push plate; 5031. Spring one; 504. Buffer plate; 505. Straight rod; 506. Spring two; 507. Slider; 60. Pressure application assembly; 601. Cavity rod; 6011. Telescopic rod; 6012. Collar; 6013. Engaging block; 602. Engaging disc; 6021. Positioning groove; 6022. Engaging groove. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] like Figures 1 to 11 As shown, a new energy vehicle wiring harness terminal plugging device of the present invention includes a sleeve 10, a plug 20, a female plug end 30, a female plug end 40, a buffer component 50, and a pressure application component 60. The sleeve 10 can be sleeved on the outside of the plug 20. The female plug end 30 and the female plug end 40 are located inside the sleeve 10 and the plug 20, respectively. The buffer component 50 is located on the cylindrical body of the sleeve 10, and the pressure application component 60 is located inside the plug 20. After the female plug end 30 and the female plug end 40 are plugged in, the sleeve 10 and the plug 20 are sleeved together, and the plug 20 is rotated. The buffer component 50 restricts the plug 20 inside the sleeve 10. When the wiring harness is pulled, the buffer component 50 can buffer the connection, so that the female plug end 30 and the female plug end 40 are not affected. When the buffer component 50 buffers the connection, the pressure application component 60 can apply pressure to the female plug end 30, forcing it to connect more tightly with the female plug end 40.

[0029] A clamping ring 11 is provided on the side of the sleeve 10 away from the insert 20. The clamping ring 11 is elastic and has a screw ring 12 connected to its external thread. The screw ring 12 can rotate to reduce the inner diameter of the clamping ring 11, so that the clamping ring 11 is clamped on the wire harness. The insert 20 is also provided with a clamping ring 11 and a screw ring 12 on the side away from the sleeve 10, so that it can be fixedly assembled on its corresponding wire harness for easy subsequent connection.

[0030] A wire harness 31 is fixedly connected to the side of the female connector 30 away from the male connector 40, and the wire harness 31 is electrically connected to the female connector 30. A limiting ring 301 is fixedly connected to the outside of the female connector 30, and a limiting frame 32 is fixedly connected to the inside of the sleeve 10. The female connector 30 is slidably connected to the limiting frame 32, and the limiting frame 32 can prevent the female connector 30 from rotating inside the sleeve 10. The female connector 30 can also limit itself from sliding excessively along the axial direction inside the sleeve 10 by the limiting ring 301, so as to prevent it from falling off the limiting frame 32. The clamping ring 11 on the sleeve 10 is sleeved on the outside of the wire harness 31, and a part of the wire harness 31 is reserved inside the sleeve 10.

[0031] A second wire harness 41 is fixedly connected to the side of the female plug-in terminal 40 away from the female plug-in terminal 30, and the second wire harness 41 is electrically connected to the female plug-in terminal 40. A second limiting ring 401 is fixedly connected to the outside of the female plug-in terminal 40, and a second limiting frame 42 is fixedly connected to the inside of the plug-in tube 20. The female plug-in terminal 40 is slidably connected to the second limiting frame 42, and the second limiting frame 42 can prevent the female plug-in terminal 40 from rotating inside the plug-in tube 20. The female plug-in terminal 40 can limit itself from sliding excessively along the axial direction inside the plug-in tube 20 by the second limiting ring 401, so as to prevent it from falling off the second limiting frame 42. A clamping ring 11 on the plug-in tube 20 is sleeved on the outside of the second wire harness 41, and a part of the second wire harness 41 is reserved inside the plug-in tube 20.

[0032] The buffer assembly 50 includes a sliding groove 501, a buffer groove 502, a push plate 503, a buffer plate 504, a straight rod 505, a second spring 506, and a slider 507. Multiple sliding grooves 501 are provided and are formed on the inner wall of the sleeve 10. A buffer groove 502 is formed on one side of the sliding groove 501, and the sliding groove 501 and the buffer groove 502 are connected. The push plate 503 is slidably connected to the connection between the sliding groove 501 and the buffer groove 502, and a first spring 5031 is provided between the push plate 503 and the connection. The buffer plate 504 is slidably connected inside the buffer groove 502 and extends to the outside of the sleeve 10. The straight rod 505 is assembled to the outside of the sleeve 10 and slidably passes through the plate of the buffer plate 504. A second spring 506 is provided on the outside of the straight rod 505, located on the side of the buffer plate 504 near the insert 20. Multiple springs are fixedly connected to the outside of the opening of the insert 20. The slider 507, corresponding to the slide groove 501, slides inside the slide groove 501 when the insert 20 is inserted into the sleeve 10. When the slider 507 slides to the end of the slide groove 501, it contacts the push plate 503 and applies pressure to it. The first spring 5031 is compressed. The insert 20 is rotated, and the slider 507 moves into the buffer groove 502, releasing the pressure on the push plate 503. The elastic potential energy of the first spring 5031 causes the push plate 503 to rise, preventing the slider 507 from moving into the slide groove 501. When the wire harness is pulled, the clamping ring 11 clamps the wire harness, causing the sleeve 10 and the insert 20 to move away from each other, pulling the wire harness reserved inside the sleeve 10 and the insert 20. The buffer plate 504 begins to slide in the buffer groove 502, and the second spring 506 is compressed, offsetting the axial force generated by the wire harness pulling and protecting the connection between the female plug end 30 and the female plug end 40.

[0033] The pressure application assembly 60 includes a cavity rod 601 and a meshing disc 602. Multiple cavity rods 601 are provided, with telescopic rods 6011 slidably connected internally. An elastic element is provided between the telescopic rods 6011 and the inner cavity of the cavity rod 601. The cavity rod 601 is hinged to the inner wall of the insert 20. A collar 6012 is hinged to the end of the telescopic rod 6011 away from the cavity rod 601, and the collar 6012 is hinged to multiple telescopic rods 6011. Several meshing blocks 6013 are fixedly connected to the collar 6012. The meshing disc 602 is fixedly connected to the outside of the female insertion end 30, and multiple positioning grooves 6021 corresponding to the meshing blocks 6013 are opened on the outer periphery of the meshing disc 602. Meshing grooves 6022 are opened inside the positioning grooves 6021. When the insert 20 is sleeved into the sleeve 10, the slider 507 enters the sliding groove 501, and meshing... The engagement block 6013 will enter the positioning groove 6021, and after rotating the insert 20, the slider 507 will move into the buffer groove 502, and the engagement block 6013 will slide into the engagement groove 6022. When the wire harness is pulled, the clamping ring 11 clamps the wire harness, causing the sleeve 10 and the insert 20 to move away from each other. The collar 6012 applies pressure to the engagement disc 602 through the engagement block 6013. The elastic element provided between the telescopic rod 6011 and the inner cavity of the cavity rod 601 is compressed. The telescopic rod 6011 slides in the cavity rod 601. The reaction force of the elastic element is transmitted to the female plug end 30 through the collar 6012, the engagement block 6013 and the engagement disc 602, so that the female plug end 30 has a force to move towards the female plug end 40, further strengthening the tightness of the plugging and effectively preventing poor contact caused by pulling the wire harness.

[0034] Working principle: When the device is not in use, the female plug end 30 is restricted inside the sleeve 10 by the limiting frame 32. The limiting ring 301 prevents the female plug end 30 from sliding excessively away from the limiting frame 32 along the axial direction. The wire harness 31 has a reserved length inside the sleeve 10. The male plug end 40 is restricted inside the plug tube 20 by the limiting frame 42. The limiting ring 401 prevents it from sliding excessively away from the limiting frame 42. The wire harness 41 also has a reserved length inside the plug tube 20. The sleeve 10 and the plug tube 20 are both fixed to the corresponding wire harness by the clamping ring 11 and the screw ring 12 on the side away from each other, preparing for subsequent plugging. During terminal insertion, the insert 20 is pushed towards the sleeve 10, aligning the male insertion end 40 with the female insertion end 30. Simultaneously, the slider 507 on the outside of the insert 20 is aligned with the groove 501 on the inner wall of the sleeve 10 and slid in. When the slider 507 slides along the groove 501 to its end, it contacts and presses against the push plate 503, causing the spring 5031 to compress. The insert 20 is rotated, causing the slider 507 to enter the buffer groove 502 from the groove 501. At this point, the pressure on the push plate 503 is released, and the spring 5031 releases its elastic potential energy to push the push plate 503 back to its original position. 503 blocks the connection between the slide groove 501 and the buffer groove 502, preventing the slider 507 from sliding back into the slide groove 501, thus achieving the initial locking of the sleeve 10 and the insert 20, ensuring that the female plug end 30 and the female plug end 40 remain in a docking state. During this process, the meshing block 6013 inside the insert 20 will simultaneously enter the positioning groove 6021 of the meshing disc 602 outside the female plug end 30. When the insert 20 is rotated, the meshing block 6013 slides with the insert 20 to the meshing groove 6022 in the positioning groove 6021, completing the engagement between the pressure application component 60 and the female plug end 30. When external factors cause the wire harness to be pulled, since the clamping ring 11 has fixed the sleeve 10, the plug 20 and the wire harness, the pulling force will cause the sleeve 10 and the plug 20 to tend to move away from each other. At this time, the wire harness 31 reserved in the sleeve 10 and the wire harness 41 reserved in the plug 20 are stretched. At the same time, the buffer plate 504 in the buffer assembly 50 is subjected to the indirect force of the plug 20 and slides in the buffer groove 502. The buffer plate 504 squeezes the spring 506 outside the straight rod 505. The spring 506 undergoes elastic deformation, converting the axial force generated by the pull into the elastic potential energy of the spring, offsetting part of the pulling force, and preventing the female plug end 30 and the female plug end 40 from being displaced or separated due to direct force. As the sleeve 10 and the insert 20 tend to separate due to pulling, the collar 6012, through the engagement block 6013 and the engagement disc 602, receives a reverse force transmitted by the engagement disc 602, causing the telescopic rod 6011 to slide into the cavity rod 601. The elastic element between the telescopic rod 6011 and the cavity rod 601 is compressed. During the compression process, the elastic element generates a reverse elastic force, which is transmitted to the engagement disc 602 through the telescopic rod 6011, the collar 6012, and the engagement block 6013. This causes the female plug end 30 to have a force in the direction of the male plug end 40, increasing the contact pressure between the female plug end 30 and the male plug end 40, effectively preventing poor terminal contact caused by wire harness pulling, and ensuring stable circuit conduction.

[0035] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A terminal plug-in device for wiring harnesses in new energy vehicles, comprising: The female plug-in terminal (30) and the female plug-in terminal (40) are characterized in that they further include: a sleeve (10) and a plug (20), the female plug-in terminal (30) and the female plug-in terminal (40) are respectively located inside the sleeve (10) and the plug (20), the plug (20) is sleeved inside the sleeve (10), and the plug (20) can slide and rotate relative to the sleeve (10); Multiple buffer plates (504) are slidably connected on the sleeve (10). The buffer plates (504) extend to the outside of the sleeve (10), and a straight rod (505) is fixedly mounted on the outside of the sleeve (10) and slides through the body of the buffer plate (504). A second spring (506) is provided on the outside of the straight rod (505). The buffer plate (504) can slide and compress the second spring (506) as the sleeve (10) and the insert (20) move away from each other. The insert (20) is provided with a collar (6012) inside. The collar (6012) can slide and rotate with the insert (20). The female plug end (30) is provided with a meshing disc (602) on the outside. The collar (6012) can apply pressure to the meshing disc (602) and the female plug end (30) by moving away from the insert (20) through the sleeve (10).

2. The new energy vehicle wiring harness terminal plug-in device according to claim 1, characterized in that, The sleeve (10) and the insert (20) are provided with a clamping ring (11) and a screw ring (12) on the side away from each other, and the screw ring (12) is threaded to the outside of the clamping ring (11).

3. The new energy vehicle wiring harness terminal plug-in device according to claim 1, characterized in that, The female plug (30) is fixedly connected to a wire harness (31) on the side away from the female plug (40), and the wire harness (31) is electrically connected to the female plug (30). The female plug (30) is fixedly connected to a limiting ring (301) on the outside, and the sleeve (10) is fixedly connected to a limiting frame (32). The female plug (30) is slidably connected to the limiting frame (32).

4. The new energy vehicle wiring harness terminal plug-in device according to claim 1, characterized in that, The sub-plug terminal (40) is fixedly connected to a wire harness two (41) on the side away from the female plug terminal (30), and the wire harness two (41) is electrically connected to the sub-plug terminal (40). The external side of the sub-plug terminal (40) is fixedly connected to a limiting ring two (401), and the internal side of the plug tube (20) is fixedly connected to a limiting frame two (42). The sub-plug terminal (40) is slidably connected to the limiting frame two (42).

5. A new energy vehicle wiring harness terminal plug-in device according to claim 1, characterized in that, The sleeve (10) has multiple sliding grooves (501) inside, and a buffer groove (502) is provided on one side of the sliding groove (501). The sliding groove (501) is connected to the corresponding buffer groove (502), and the buffer plate (504) can be slidably connected in the sliding groove (501) and the buffer groove (502).

6. The new energy vehicle wiring harness terminal plug-in device according to claim 5, characterized in that, A push plate (503) is slidably connected at the connection between the slide groove (501) and the buffer groove (502), and a spring (5031) is provided between the push plate (503) and the connection.

7. A new energy vehicle wiring harness terminal plug-in device according to claim 1, characterized in that, Multiple cavity rods (601) are hinged to the inner wall of the insert (20). A telescopic rod (6011) is slidably connected inside the cavity rod (601). An elastic element is provided between the telescopic rod (6011) and the inner cavity of the cavity rod (601). The end of the telescopic rod (6011) away from the cavity rod (601) is hinged to the collar (6012).

8. A new energy vehicle wiring harness terminal plug-in device according to claim 1, characterized in that, Multiple engagement blocks (6013) are fixedly connected to the collar (6012), and multiple positioning grooves (6021) are provided on the engagement disc (602). Engagement grooves (6022) are provided inside the positioning grooves (6021). The engagement blocks (6013) and positioning grooves (6021) can engage with each other as the sleeve (10) and the insert (20) approach each other, and the engagement blocks (6013) can engage with the engagement grooves (6022) as the insert (20) rotates.

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