A vibration-reducing and anti-wiring harness oxygen sensor

Abstract

The invention discloses a vibration-reducing and anti-wiring harness parallel winding oxygen sensor, comprising a steel shield, an air intake dust cover, a hexagonal nut seat, a vibration-reducing steel sleeve pad, a seat chip assembly, an intermediate sleeve, a three-section tail protective cover, a wire harness, a heat-resistant sleeve, an anti-winding positioning seat card and a field-shaped sunken plug connector. The steel shield and the air intake dust cover are fixed to the outside of the head end of the hexagonal nut seat, the vibration-reducing steel sleeve pad is sleeved on the hexagonal nut seat, the intermediate sleeve is welded to the tail of the hexagonal nut seat, the seat chip assembly is located inside the space formed by the air intake dust cover, the hexagonal nut seat and the intermediate sleeve, the three-section tail protective cover is integrally welded to the tail of the intermediate sleeve, the tail end of the three-section tail protective cover is connected to the heat-resistant sleeve, the wire harness connects the field-shaped sunken plug connector to the seat chip assembly, and the anti-winding positioning seat card is installed at the tail of the field-shaped sunken plug connector. The invention has a good overall vibration reduction and anti-loosening effect, avoids the parallel winding of the wire harness, and prevents the wire harness from being separated from the plug connector due to the parallel winding.

Description

Technical Field

[0001] The invention relates to the field of vibration reduction and anti-wiring harness parallel winding oxygen sensor, and in particular belongs to a vibration reduction and anti-wiring harness parallel winding oxygen sensor. Background Art

[0002] The oxygen sensor detects and controls the components in the exhaust gas by measuring the potential difference flowing through the chip, thereby achieving the control of the optimal air-fuel ratio of the automobile engine, achieving the purpose of energy saving, consumption reduction and environmental protection. The following problems exist in the actual use of ordinary oxygen sensors: 1. Ordinary oxygen sensors are mostly directly screwed on the exhaust pipe assembly of the automobile engine through external threads. After a period of use, due to the overall vibration of the automobile, there is no vibration damping part at the screw connection of the oxygen sensor and the exhaust pipe assembly, and sometimes the oxygen sensor screw connection is stripped; 2. The connection between the wire harness and the plug connector in the ordinary oxygen sensor often causes the wire harness to be entangled or wound. When the oxygen sensor is installed on the automobile for use, the winding or winding of the wire harness is prone to cross-wear, causing the wire harness to be separated from the plug connector, resulting in the entire oxygen sensor being scrapped; 3. The outer side of the seat chip assembly in the ordinary oxygen sensor is wrapped with an asbestos or ceramic material insulation layer, and the seat chip assembly and the insulation layer are integrally embedded in the middle sleeve and the tail protective cover. In the actual use process, due to the accumulation of heat and the lack of circulation ventilation holes around the tail protective cover, the chip inside the tail protective cover is prone to local overheating here, resulting in local overburning, resulting in the scrapping of the oxygen sensor chip. To this end, the present invention provides a vibration-reducing and anti-wiring harness winding oxygen sensor. Summary of the invention

[0003] The present invention provides a vibration-reducing and anti-wiring harness parallel winding oxygen sensor, which solves the problems mentioned in the above background technology through the overall research and development design of the steel shield, air intake dust cover, hexagonal nut seat, vibration-reducing steel sleeve pad, seat chip assembly, middle sleeve, three-section tail protective cover, wire harness, heat-resistant sleeve, anti-winding positioning seat card and field-shaped recessed plug connector. At the same time, the present invention has a good overall vibration reduction and anti-loosening effect, avoids the wiring harness parallel winding, and can prevent the wiring harness from being separated from the plug connector due to parallel winding. The circulating air through hole on the middle convex arc surface area of ​​the three-section tail protective cover can circulate air cooling for the seat chip assembly to prevent the internal chip from being overheated due to local overheating, which causes the oxygen sensor chip to be scrapped. It has good stability and a long service life.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A vibration-reducing and anti-wiring harness parallel winding oxygen sensor comprises a steel shield, an air intake dust cover, a hexagonal nut seat, a vibration-reducing steel sleeve pad, a seat chip assembly, an intermediate sleeve, a three-section tail protective sleeve, a wire harness, a heat-resistant sleeve, an anti-winding positioning seat card and a field-shaped recessed plug connector. The steel shield and the air intake dust cover are welded and fixed to the outside of the head end of the hexagonal nut seat, the intermediate sleeve is welded to the tail of the hexagonal nut seat, the seat chip assembly is integrally located inside the space formed by the air intake dust cover, the hexagonal nut seat and the intermediate sleeve, the front end of the three-section tail protective sleeve is integrally welded to the tail of the intermediate sleeve, the tail end of the three-section tail protective sleeve is connected to the heat-resistant sleeve, the front end of the wire harness is connected to the seat chip assembly, and the tail end of the wire harness is connected to the tail of the field-shaped recessed plug connector. The heat-resistant sleeve is integrally sleeved on the outside of the wiring harness, and is characterized in that a vibration-damping steel sleeve pad is sleeved on the root of the front end of the hexagonal nut seat, and the anti-winding positioning seat card is installed on the outside of the tail of the field-shaped recessed plug connector, and the middle fixed sleeve of the field-shaped recessed plug connector is provided with a suction vibration-damping anti-skid pad, and the suction vibration-damping anti-skid pad and the field-shaped recessed plug connector are connected to each other as a whole. A positioning assembly card is provided in the middle part of the field-shaped recessed plug connector, and the positioning assembly card and the field-shaped recessed plug connector are connected to each other as a whole, and a positioning convex hook is provided on the outer side of the lower part of the positioning assembly card, and the upper end of the anti-winding positioning seat card is connected to the positioning convex hook of the positioning assembly card, and the wiring harness connected to the tail of the field-shaped recessed plug connector passes through the anti-winding positioning seat card longitudinally.

[0006] Preferably, there are four groups of air inlet holes around the outside of the steel shield, and the four groups of air inlet holes are evenly distributed around the steel shield. There is an air inlet circular hole in the middle of the front end face of the air inlet dust cover, and the bottom of the air inlet dust cover is welded and fixed to the front end of the hexagonal nut seat. The steel shield is integrally mounted on the outside of the air inlet dust cover, and the bottom of the steel shield is located on the outside of the air inlet dust cover, and the bottom of the steel shield is welded and fixed to the front end of the hexagonal nut seat.

[0007] Preferably, the vibration-damping steel sleeve gasket is a double-layer connected soft steel sheet, with a groove in the middle and an inner buckled edge around the inside of the vibration-damping steel sleeve gasket. The inner buckled edge fits the vibration-damping steel sleeve gasket as a whole on the front end root of the hexagonal nut seat. When the hexagonal nut seat is integrally screwed and installed on the automobile engine exhaust pipe assembly, the vibration-damping steel sleeve gasket at the front end root of the hexagonal nut seat is tightly pressed and contacted with the installation position of the automobile engine exhaust pipe assembly.

[0008] Preferably, the three-section tail protective sleeve has a large-mouth end at the front part, which is welded to the outside of the end of the middle sleeve, and the large-mouth end at the front part of the three-section tail protective sleeve is connected to the middle sleeve as a whole. The three-section tail protective sleeve has a small retracted platform end at the tail part, and a sealing plug body is embedded inside the small retracted platform end. The wiring harness is passed through the sealing plug body inside the small retracted platform end at the tail part of the three-section tail protective sleeve, and an insulating ceramic ring is embedded inside the three-section tail protective sleeve. The wiring harness passes through the sealing plug body and the insulating ceramic ring, and the front end of the wiring harness is connected to the chip assembly with a seat. There is a convex arc surface area in the middle of the three-section tail protective sleeve, and an insulating ceramic ring is embedded inside the convex arc surface area, and there are circulating air holes around the outside of the convex arc surface area.

[0009] Preferably, the anti-winding positioning seat card is U-shaped as a whole, and there are positioning slots on both sides of the U-shaped anti-winding positioning seat card. The positioning slots match the positioning convex hooks on the outer side of the lower part of the positioning assembly card in the middle part of the field-shaped recessed plug connector. There are four small notches on both sides of the bottom surface of the U-shaped anti-winding positioning seat card, and the four small notches are distributed in a "field" shape on the bottom surface of the U-shaped anti-winding positioning seat card. The wiring harness connected to the tail of the field-shaped recessed plug connector, and the wires inside the wiring harness respectively pass longitudinally through the four small notches on both sides of the bottom of the anti-winding positioning seat card.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] A vibration-reducing and anti-wiring harness winding oxygen sensor is manufactured through the overall optimization design combination of a steel shield, an air intake dust cover, a hexagonal nut seat, a vibration-reducing steel sleeve pad, a seat chip assembly, an intermediate sleeve, a three-section tail protective sleeve, a wiring harness, a heat-resistant sleeve, an anti-winding positioning seat card and a field-shaped recessed plug connector. The invention solves the problems existing in the actual use of ordinary oxygen sensors: 1. Ordinary oxygen sensors are mostly directly screwed and installed on the exhaust pipe assembly of the automobile engine through external threads. After being used for a period of time, due to the overall vibration of the automobile, there is no vibration damping part at the screw connection of the oxygen sensor and the exhaust pipe assembly, and sometimes the thread of the oxygen sensor is stripped; 2. The connection between the wire harness and the plug connector in the ordinary oxygen sensor is often entangled or wound. When the oxygen sensor is installed on the automobile for use, the entanglement or winding of the wire harness is prone to cross-wear, which causes the wire harness to separate from the plug connector, resulting in the scrapping of the entire oxygen sensor; 3. The outer side of the chip assembly with a seat in the ordinary oxygen sensor is wrapped with an asbestos or ceramic material insulation layer, and the chip assembly with a seat and the insulation layer are integrally embedded in the middle sleeve and the tail protective cover. In actual use, due to the accumulation of heat and the lack of circulation ventilation holes around the tail protective cover, the chip inside the tail protective cover is prone to local overheating at this location, resulting in the scrapping of the oxygen sensor chip.

[0012] The invention has good overall vibration reduction and anti-loosening effect, avoids the wiring harness from winding, and can prevent the wiring harness from being separated from the plug connector due to winding. The circulating air through hole on the convex arc surface area in the middle of the three-section tail protective cover can circulate air cooling for the chip assembly with seat, preventing the internal chip from being overheated due to local overheating, resulting in the scrapping of the oxygen sensor chip. It has good stability and long service life. It is suitable for the promotion and use of vibration reduction and anti-winding automobile oxygen sensors. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 It is a schematic diagram of the assembly of the anti-winding positioning seat card and the field-shaped sunken plug connector in the present invention;

[0015] Figure 3 It is a schematic diagram of the vibration-damping steel sleeve pad in the present invention. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of invention protection.

[0017] The present invention is further described in detail below with reference to examples and specific implementation modes.

[0018] See the attached drawings: a vibration-damping and anti-wiring harness and winding oxygen sensor, comprising a steel shield 1, an air intake dust cover, a hexagonal nut seat 3, a vibration-damping steel sleeve pad 2, a chip assembly with a seat, an intermediate sleeve 4, a three-section tail protective sleeve 5, a wiring harness 7, a heat-resistant sleeve 6, an anti-winding positioning seat card 8 and a field-shaped recessed plug connector 9. The steel shield 1 and the air intake dust cover are welded and fixed to the outside of the head end of the hexagonal nut seat 3, the intermediate sleeve 4 is welded to the tail of the hexagonal nut seat 3, the chip assembly with a seat is located as a whole inside the space formed by the air intake dust cover, the hexagonal nut seat 3 and the intermediate sleeve 4, the front end of the three-section tail protective sleeve 5 is welded as a whole to the tail of the intermediate sleeve 4, the tail end of the three-section tail protective sleeve 5 is connected to the heat-resistant sleeve 6, the front end of the wiring harness 7 is connected to the chip assembly with a seat, and the tail end of the wiring harness 7 is connected to the tail of the field-shaped recessed plug connector 9. The sleeve 6 is integrally sleeved on the outside of the wiring harness 7, and is characterized in that the vibration-damping steel sleeve pad 2 is sleeved on the root of the front end of the hexagonal nut seat 3, the anti-winding positioning seat card 8 is installed on the outside of the tail of the field-shaped recessed plug connector 9, and the middle fixed sleeve of the field-shaped recessed plug connector 9 is provided with a suction vibration-damping anti-skid pad 10, and the suction vibration-damping anti-skid pad 10 and the field-shaped recessed plug connector 9 are interconnected as a whole. A positioning assembly card 901 is provided in the middle part of the field-shaped recessed plug connector 9, and the positioning assembly card 901 and the field-shaped recessed plug connector 9 are interconnected as a whole. A positioning convex hook 9011 is provided on the outer side surface of the lower part of the positioning assembly card 901, and the upper end of the anti-winding positioning seat card 8 is connected to the positioning convex hook 9011 of the positioning assembly card 901, and the wiring harness 7 connected to the tail of the field-shaped recessed plug connector 9 passes through the anti-winding positioning seat card 8 longitudinally.

[0019] Preferably, there are four groups of air inlet holes 101 around the outer side of the steel shield 1, and the four groups of air inlet holes 101 are evenly distributed around the steel shield 1. There is an air inlet circular hole in the middle of the front end face of the air inlet dust cover, and the bottom of the air inlet dust cover is welded and fixed to the front end of the hexagonal nut seat 3. The steel shield 1 is integrally mounted on the outer side of the air inlet dust cover, and the bottom of the steel shield 1 is located on the outer side of the air inlet dust cover, and the bottom of the steel shield 1 is welded and fixed to the front end of the hexagonal nut seat 3.

[0020] Preferably, the vibration-damping steel sleeve gasket 2 is a double-layered connected soft steel sheet with a groove 202 in the middle of the double-layered connected steel sheet. An inner buckled edge 201 is provided around the inside of the vibration-damping steel sleeve gasket 2. The inner buckled edge 201 integrally fits the vibration-damping steel sleeve gasket 2 on the front end root of the hexagonal nut seat 3. When the hexagonal nut seat 3 is integrally screwed and installed on the automobile engine exhaust pipe assembly, the vibration-damping steel sleeve gasket 2 at the front end root of the hexagonal nut seat 3 is tightly pressed and contacted with the installation position of the automobile engine exhaust pipe assembly.

[0021] Preferably, the three-section tail protective sleeve 5 has a large-mouthed end 501 at the front, which is welded to the outer side of the end of the middle sleeve 4; the large-mouthed end 501 at the front of the three-section tail protective sleeve 5 is connected to the middle sleeve 4 as a whole; the three-section tail protective sleeve 5 has a small inward-retracted platform end 504 at the tail, and a sealing plug body is embedded inside the small inward-retracted platform end 504; the wiring harness 7 is passed through the sealing plug body inside the small inward-retracted platform end 504 at the tail of the three-section tail protective sleeve 5; an insulating ceramic ring is embedded inside the three-section tail protective sleeve 5; the wiring harness 7 passes through the sealing plug body and the insulating ceramic ring; the front end of the wiring harness 7 is connected to the chip assembly with a seat; the three-section tail protective sleeve 5 has a convex arc surface area 502 in the middle, an insulating ceramic ring is embedded inside the convex arc surface area 502, and there are circulating air holes 503 around the outer side of the convex arc surface area 502.

[0022] Preferably, the anti-winding positioning seat card 8 is U-shaped as a whole, and there are positioning slots 802 on both sides of the U-shaped anti-winding positioning seat card 8. The positioning slots 802 match the positioning convex hooks 9011 on the lower outer side of the positioning assembly card 901 in the middle part of the field-shaped recessed plug connector 9. There are four small notches 801 on both sides of the bottom surface of the U-shaped anti-winding positioning seat card 8. The four small notches 801 are distributed in a "field" shape on the bottom surface of the U-shaped anti-winding positioning seat card 8. The wiring harness 7 connected to the tail of the field-shaped recessed plug connector 9, and the wires inside the wiring harness 7 respectively pass longitudinally through the four small notches 801 on both sides of the bottom of the anti-winding positioning seat card 8.

[0023] When in use: the oxygen sensor of the present invention manufactured as described above is installed at the corresponding position on the exhaust pipe assembly of the automobile engine; the field-shaped recessed plug connector 9 of the oxygen sensor of the present invention, the suction vibration reduction anti-skid pad 10 fixed in the middle of the field-shaped recessed plug connector 9 and the positioning assembly card 901 in the middle of the field-shaped recessed plug connector 9 are integrally inserted into the corresponding oxygen sensor connection on the automobile central control panel device to ensure that the field-shaped recessed plug connector 9 is integrally embedded in the corresponding position on the automobile central control panel device; the steel shield 1, the air intake dust cover, the hexagonal nut seat 3, the vibration reduction steel sleeve pad 2, the seat chip assembly, the intermediate sleeve 4 and the three-section tail protective sleeve 5 in the oxygen sensor of the present invention are inserted through the outer sleeve 4 on the front end part of the hexagonal nut seat 3. The thread is stably installed in the corresponding position on the exhaust pipe assembly of the automobile engine, ensuring that the steel shield 1 and the air intake dust cover are located inside the exhaust pipe assembly of the automobile engine as a whole. The vibration-damping steel sleeve pad 2 at the root of the front end of the hexagonal nut seat 3 is tightly pressed and contacted with the installation position of the exhaust pipe assembly of the automobile engine; between the field-shaped recessed plug connector 9 and the three-section tail protective cover 5, the card slot 802 is connected with the card convex hook 9011 on the lower outer side of the positioning assembly card 901 in the middle part of the field-shaped recessed plug connector 9, and the wires inside the wiring harness 7 are respectively longitudinally passed through the four small notches 801 on both sides of the bottom of the anti-winding positioning seat card 8, and are connected as a whole through the heat-resistant sleeve 6 on the outside and the wire harness 7 at the tail of the field-shaped recessed plug connector 9. Subsequently, when the automobile engine and the automobile central control device are working, the oxygen sensor product of the present invention is used together with the automobile when it is working.

[0024] The present invention solves the problems existing in the actual use of ordinary oxygen sensors: 1. Ordinary oxygen sensors are mostly directly screwed and installed on the exhaust pipe assembly of automobile engines through external threads. After being used for a period of time, due to the overall vibration of the automobile, there is no vibration damping part at the screw connection of the oxygen sensor and the exhaust pipe assembly, and sometimes the thread stripping phenomenon occurs at the screw connection of the oxygen sensor; 2. The connection between the wire harness and the plug connector in the ordinary oxygen sensor often occurs the wire harness is entangled or wound in parallel. When the oxygen sensor is installed on the automobile for use, the entangled or wound part of the wire harness is prone to cross-wear, which causes the wire harness to separate from the plug connector, resulting in the entire oxygen sensor being scrapped; 3. The outer side of the chip assembly with a seat in the ordinary oxygen sensor is wrapped with an asbestos or ceramic material insulation layer, and the chip assembly with a seat and the insulation layer are integrally embedded in the interior of the intermediate sleeve and the tail protective sleeve. In actual use, due to the accumulation of heat and the absence of circulation ventilation holes around the tail protective sleeve, the chip inside the tail protective sleeve is prone to local overheating at this location, causing local overburning, resulting in the scrapping of the oxygen sensor chip.

[0025] The vibration-damping steel sleeve pad 2 in the oxygen sensor of the present invention can mitigate and offset the influence of the overall vibration of the car on the screw connection between the oxygen sensor and the exhaust pipe assembly, and prevent the screw connection between the oxygen sensor and the exhaust pipe assembly from being stripped. At the same time, the suction vibration-damping anti-skid pad 10 fixedly mounted in the middle of the field-shaped recessed plug connector 9 can offset the influence of the overall vibration of the car on the vibration of the connection between the field-shaped recessed plug connector 9 and the car's central control panel device; the anti-winding positioning seat card 8 is installed on the outer side of the tail of the field-shaped recessed plug connector 9, and the wire harness 7 at the tail of the field-shaped recessed plug connector 9, and the wires inside the wire harness 7 are respectively longitudinally passed through four small notches 801 on both sides of the bottom of the anti-winding positioning seat card 8, so as to prevent The connection between the wiring harness 7 and the field-shaped recessed plug connector 9 can prevent the wiring harness from being entangled or paralleled. When the oxygen sensor is installed on a car for use, the intersection wear of the wiring harness 7 at the connection point where the wiring harness is entangled or paralleled can be avoided, and the wiring harness 7 and the field-shaped recessed plug connector 9 can be effectively prevented from being separated. The three-section tail protective cover 5 has a convex arc surface area 502 in the middle, and circulating air holes 503 are arranged around the outer side of the convex arc surface area 502. Through the circulating air cooling of the circulating air holes 503, the insulating ceramic ring embedded on the inner side of the three-section tail protective cover 5 and the chip assembly with a seat can be cooled as a whole, so as to prevent the chip inside the three-section tail protective cover 5 from being locally overheated, and to prevent the oxygen sensor chip from being scrapped due to local overburning.

[0026] The invention has good overall vibration reduction and anti-loosening effect, avoids the wiring harness from winding, and can prevent the wiring harness from being separated from the plug connector due to winding. The circulating air through hole on the convex arc surface area in the middle of the three-section tail protective cover can circulate air cooling for the chip assembly with seat, preventing the internal chip from being overheated due to local overheating, resulting in the scrapping of the oxygen sensor chip. It has good stability and long service life. It is suitable for the promotion and use of vibration reduction and anti-winding automobile oxygen sensors.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A vibration-damping and anti-wiring harness and winding oxygen sensor, comprising a steel shield, an air intake dust cover, a hexagonal nut seat, a vibration-damping steel sleeve pad, a seat chip assembly, an intermediate sleeve, a three-section tail protective sleeve, a wiring harness, a heat-resistant sleeve, an anti-winding positioning seat card and a field-shaped recessed plug connector. The steel shield and the air intake dust cover are welded and fixed to the outside of the head end of the hexagonal nut seat, the intermediate sleeve is welded to the tail of the hexagonal nut seat, the seat chip assembly is integrally located inside the space formed by the air intake dust cover, the hexagonal nut seat and the intermediate sleeve, the front end of the three-section tail protective sleeve is integrally welded to the tail of the intermediate sleeve, the tail end of the three-section tail protective sleeve is connected to the heat-resistant sleeve, the front end of the wiring harness is connected to the seat chip assembly, the tail end of the wiring harness is connected to the tail of the field-shaped recessed plug connector, and the heat-resistant sleeve is integrally sleeved on the outside of the wiring harness, characterized in that The vibration-damping steel sleeve is sleeved on the root of the front end of the hexagonal nut seat, the anti-winding positioning seat card is installed on the outside of the tail of the field-shaped recessed plug connector, the middle fixed sleeve of the field-shaped recessed plug connector is provided with a suction vibration-damping anti-skid pad, the suction vibration-damping anti-skid pad and the field-shaped recessed plug connector are connected to each other as a whole, a positioning assembly card is provided in the middle part of the field-shaped recessed plug connector, the positioning assembly card and the field-shaped recessed plug connector are connected to each other as a whole, a positioning convex hook is provided on the outer side of the lower part of the positioning assembly card, the upper end of the anti-winding positioning seat card is connected to the positioning convex hook of the positioning assembly card, and the wiring harness connected to the tail of the field-shaped recessed plug connector passes through the anti-winding positioning seat card longitudinally; There are four groups of air inlet holes around the outer side of the steel shield, and the four groups of air inlet holes are evenly distributed around the steel shield. There is an air inlet circular hole in the middle of the front end surface of the air inlet dust cover. The bottom of the air inlet dust cover is welded and fixed to the front end of the hexagonal nut seat. The steel shield is integrally mounted on the outer side of the air inlet dust cover. The bottom of the steel shield is located on the outer side of the air inlet dust cover, and the bottom of the steel shield is welded and fixed to the front end of the hexagonal nut seat. The vibration-damping steel sleeve gasket is a double-layer conjoined soft steel sheet, with a groove in the middle and an inner buckled edge around the inner periphery of the vibration-damping steel sleeve gasket, and the inner buckled edge sets the vibration-damping steel sleeve gasket as a whole on the front end root of the hexagonal nut seat. When the hexagonal nut seat is integrally screwed and installed on the automobile engine exhaust pipe assembly, the vibration-damping steel sleeve gasket at the front end root of the hexagonal nut seat is tightly pressed and contacted with the installation position of the automobile engine exhaust pipe assembly; The front part of the three-section tail protective cover has a large-mouthed end sleeve welded on the outside of the end of the middle sleeve, the large-mouthed end of the front part of the three-section tail protective cover is connected to the middle sleeve as a whole, the tail part of the three-section tail protective cover has a small inward-retracted platform end, the inner side of the small inward-retracted platform end is embedded with a sealing plug body, the wiring harness is installed on the sealing plug body inside the small inward-retracted platform end of the tail part of the three-section tail protective cover, the inner side of the three-section tail protective cover is embedded with an insulating ceramic ring, the wiring harness passes through the sealing plug body and the insulating ceramic ring, the front end of the wiring harness is connected to the chip assembly with a seat, the middle part of the three-section tail protective cover has an outer convex arc surface area, the inner side of the outer convex arc surface area is embedded with an insulating ceramic ring, and the outer side of the outer convex arc surface area is surrounded by circulating air holes; The anti-winding positioning seat card is U-shaped as a whole, and there are clamping slots on both sides of the U-shaped anti-winding positioning seat card. The clamping slots match the clamping convex hooks on the outer side of the lower part of the positioning assembly card in the middle part of the field-shaped recessed plug connector. There are four small notches on both sides of the bottom surface of the U-shaped anti-winding positioning seat card. The four small notches are distributed in the shape of a "field" on the bottom surface of the U-shaped anti-winding positioning seat card. The wiring harness connected to the tail of the field-shaped recessed plug connector, and the wires inside the wiring harness are respectively longitudinally passed through the four small notches on both sides of the bottom of the anti-winding positioning seat card.

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