Wire harness protection assembly for nitrogen-oxygen sensor

Abstract

The utility model discloses a wire harness protection assembly for a nitrogen-oxygen sensor, and belongs to the technical field of nitrogen-oxygen sensors. A wire harness protection assembly for a nitrogen-oxygen sensor comprises a connecting plug and a connecting wire harness communicated with the end portion of the connecting plug, the end portion of the connecting wire harness is communicated with a wire harness plug, the end portion of the wire harness plug is communicated with a sensor head, and the wire harness protection assembly further comprises an upper protection sleeve installed at the connecting position between the wire harness plug and the sensor head; through cooperation of the upper protective sleeve, the lower protective sleeve, the supporting block and the locking mechanism, the surface of the sensor head and the surface of the wire harness plug can be wrapped and protected, through the arrangement of the mode, left and right limiting is achieved while wrapping is conducted, an automobile is prevented from vibrating in the running process, and the safety of the automobile is improved. The problem of poor contact caused by easy loosening of the joint of the sensor head and the wire harness plug is solved, and the service life of the nitrogen-oxygen sensor is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen and oxygen sensors, in particular to a wiring harness protection component for nitrogen and oxygen sensors. Background Art

[0002] The automobile engine is a device that provides power for the car. In order to facilitate the detection of the gas emitted by the automobile engine and to determine the combustion conditions of the automobile engine, a nitrogen oxide sensor is used for detection.

[0003] For example, in the prior art, the Chinese patent publication number CN215116156U, application date: 2021-06-07, is titled "A Nitrogen Oxygen Sensor," and belongs to the technical field of nitrogen oxygen sensors. A nitrogen oxygen sensor comprises a nitrogen oxygen sensor component and a connecting plug, wherein the nitrogen oxygen sensor component is provided with an air inlet, the connecting plug is connected to a wiring harness connector via a connecting wiring harness, the nitrogen oxygen sensor component is connected to a sensor connector, the sensor connector and the wiring harness connector are plugged together, and further comprises a clamping end provided on the nitrogen oxygen sensor component, the clamping end being provided with an inwardly concave clamping head to limit the sliding of the wiring harness connector; the utility model, by providing an inwardly concave clamping block, can limit the sliding of the wiring harness connector, improve the connection stability between the wiring harness connector and the sensor connector, prevent the wiring harness connector from falling off during use, and improve the accuracy of detection.

[0004] However, the above patent still has the disadvantage that when the sensor head and the wiring harness plug are connected, since it only provides simple surface protection, it is impossible to limit the left and right sides. When the car vibrates while driving, the connection between the sensor head and the wiring harness plug is prone to loosening, causing poor contact, further reducing the service life of the nitrogen oxide sensor.

[0005] Therefore, in order to solve this problem, the present invention provides a wiring harness protection component for a nitrogen oxide sensor. Utility Model Content

[0006] The purpose of the utility model is to solve the problems in the prior art and to propose a wiring harness protection component for a nitrogen oxide sensor.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A wiring harness protection assembly for a nitrogen oxygen sensor comprises a connecting plug and a connecting wiring harness connected to the end of the connecting plug, wherein the end of the connecting wiring harness is connected to the wiring harness plug, and the end of the wiring harness plug is connected to the sensor head. The assembly also comprises: an upper protective cover installed at the connection between the wiring harness plug and the sensor head to protect the upper surface; a lower protective cover installed at the connection between the wiring harness plug and the sensor head to protect the lower surface, the lower protective cover being connected to the upper protective cover by bolts; support blocks respectively fixed to the inside of the upper protective cover and the lower protective cover to protect the outside of the sensor head; and locking mechanisms respectively arranged inside the upper protective cover and the lower protective cover to limit the sides of the wiring harness plug and the sensor head.

[0009] Preferably, the locking mechanism includes a bidirectional screw rod that rotates inside the upper protective cover and the lower protective cover through a bearing, and the surface of the bidirectional screw rod is threadedly connected to two arc-shaped clamping plates, and the arc-shaped clamping plates are respectively located on the sides of the sensor head and the wiring harness plug, and the end of the bidirectional screw rod passes through the upper protective cover and extends outside to be fixedly connected to a turning handle.

[0010] Preferably, a protective sleeve is sleeved on the surface of the connecting harness, and the protective sleeve is clamped between the upper protective sleeve and the lower protective sleeve.

[0011] Preferably, the protective cover comprises a corrugated tube sleeved on the surface of the connecting harness, and one end of the corrugated tube sleeved between the upper protective cover and the lower protective cover.

[0012] Preferably, the protective cover comprises a corrugated tube sleeved on the surface of the connecting harness, and one end of the corrugated tube sleeved between the upper protective cover and the lower protective cover.

[0013] Preferably, guide grooves are provided inside the upper protective cover and the lower protective cover, guide blocks are slidably connected inside the guide grooves, and ends of the guide blocks are fixed on the arc-shaped clamping plates.

[0014] Preferably, the upper protective cover, the lower protective cover, the support block and the locking mechanism are all made of heat-insulating metal.

[0015] Preferably, the locking mechanism includes a fixed shell fixed on the surface of the upper protective cover and the lower protective cover, and two symmetrical metal pull ropes are arranged inside the fixed shell, and one end of the two metal pull ropes respectively passes through the upper protective cover, the lower protective cover and the support block and is fixedly connected to a movable splint, and the movable splint is set in the upper protective cover and the lower protective cover, and the surface of the metal pull rope is threadedly connected to a rotating screw, and the end of the rotating screw is rotatably connected to an extrusion plate through a bearing, and the surface of the extrusion plate is fitted to the metal pull rope.

[0016] Preferably, the upper protective cover and the lower protective cover are both provided with limiting grooves, the limiting grooves are slidably connected to limiting blocks, and the ends of the limiting blocks are fixed on the movable splint.

[0017] Compared with the prior art, the present invention provides a wiring harness protection assembly for a nitrogen oxide sensor, which has the following beneficial effects:

[0018] The wiring harness protection component for the nitrogen oxide sensor can cover and protect the surface of the sensor head and the wiring harness plug through the cooperation between the upper protective cover, the lower protective cover, the support block and the locking mechanism. Through this arrangement, it is possible to limit the left and right sides while covering, preventing the vehicle from vibrating during driving, and simultaneously causing the connection between the sensor head and the wiring harness plug to loosen and cause poor contact, thereby further improving the service life of the nitrogen oxide sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a wiring harness protection assembly for a nitrogen oxide sensor proposed in the present invention;

[0020] Figure 2 This is a schematic diagram of the cross-section structure of a locking mechanism for a nitrogen oxide sensor wiring harness protection assembly proposed in this utility model. Figure 1 ;

[0021] Figure 3 This is a schematic diagram of the structure of an upper protective cover for a nitrogen oxide sensor wiring harness protection assembly proposed in the present utility model;

[0022] Figure 4 This is a schematic diagram of the structure of a protective cover for a nitrogen oxide sensor wiring harness protection assembly proposed in the present utility model;

[0023] Figure 5 This utility model proposes a wiring harness protection component for nitrogen and oxygen sensors Figure 2 A in the middle is an enlarged structural diagram;

[0024] Figure 6 This is a schematic diagram of the cross-section structure of a locking mechanism for a nitrogen oxide sensor wiring harness protection assembly proposed in this utility model. Figure 2 ;

[0025] Figure 7 This is a schematic diagram of the cross-section structure of a fixed shell and a metal pull rope for a nitrogen oxide sensor wiring harness protection assembly proposed by the present invention.

[0026] In the figure: 1. Connecting plug; 2. Connecting wire harness; 21. Wiring harness plug; 3. Sensor head; 4. Upper protective cover; 5. Lower protective cover; 6. Support block; 7. Locking mechanism; 71. Bidirectional screw; 72. Arc splint; 73. Turning handle; 74. Guide groove; 75. Guide block; 8. Protective cover; 81. Bellows; 82. Outer insulation cover; 83. Inner insulation cover; 711. Fixed shell; 712. Metal pull rope; 713. Moving splint; 714. Rotating screw; 715. Extrusion plate; 716. Limiting groove; 717. Limiting block. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0029] Example 1: Reference Figure 1-Figure 7A wiring harness protection assembly for a nitrogen oxide sensor includes a connecting plug 1 and a connecting wiring harness 2 connected to the end of the connecting plug 1, the end of the connecting wiring harness 2 is connected to a wiring harness plug 21, and the end of the wiring harness plug 21 is connected to a sensor head 3. The assembly also includes: an upper protective cover 4, installed at the connection between the wiring harness plug 21 and the sensor head 3, for protecting the upper surface; a lower protective cover 5, installed at the connection between the wiring harness plug 21 and the sensor head 3, for protecting the lower surface, and the lower protective cover 5 is connected to the upper protective cover 4 by bolts; a support block 6, respectively fixed to the inside of the upper protective cover 4 and the lower protective cover 5, for protecting the outside of the sensor head 3; a locking mechanism 7, respectively provided on the upper protective cover 4 The interior of the upper and lower protective sleeves 5 is used to limit the side position of the wiring harness plug 21 and the sensor head 3. The locking mechanism 7 includes a two-way screw rod 71 that rotates inside the upper and lower protective sleeves 4 and 5 through bearings. The surface of the two-way screw rod 71 is threadedly connected to two arc-shaped clamping plates 72. The arc-shaped clamping plates 72 are respectively located on the sides of the sensor head 3 and the wiring harness plug 21. The end of the two-way screw rod 71 passes through the upper protective sleeve 4 and extends outside to be fixedly connected to the handle 73. The interior of the upper and lower protective sleeves 4 and 5 are both provided with guide grooves 74. The interior of the guide grooves 74 is slidably connected to a guide block 75. The end of the guide block 75 is fixed on the arc-shaped clamping plate 72. The materials of the upper and lower protective sleeves 4, the lower protective sleeves 5, the support block 6 and the locking mechanism 7 are all made of heat-insulating metal.

[0030] In the present invention, when in use, first connect the automobile control unit through the connecting plug 1, then connect the connecting plug 1 through the connecting wire harness 2, and finally connect the wiring harness plug 21 at the end of the connecting wire harness 2 into the sensor head 3, so as to thread the sensor head 3 onto the automobile exhaust pipe for detection. The upper protective cover 4 and the lower protective cover 5 can be respectively covered to the connection between the sensor head 3 and the wiring harness plug 21. Under the setting of the support block 6 inside the upper protective cover 4 and the lower protective cover 5, the surface of the sensor head 3 can be supported and protected, and then driven by the locking mechanism 7, under the rotation of the bidirectional screw rod 71, the two arc-shaped splints 72 on the surface can be simultaneously driven to move, so as to position the two arc-shaped splints 72 respectively between the sensor head 3 and the wiring harness plug 21. The side of the harness plug 21 can be tightly fitted to the surface of the sensor head 3 and the harness plug 21 through the continuous displacement of the arc-shaped clamping plate 72, so as to limit the two sides of the sensor head 3 and the harness plug 21 to avoid the connection between the sensor head 3 and the harness plug 21 from loosening under vibration. With the setting of the turning handle 73, it is convenient for the staff to manually rotate the bidirectional screw rod 71, and through the opening of the guide groove 74, it can guide the guide block 75. Since the guide block 75 is fixed on the arc-shaped clamping plate 72, the arc-shaped clamping plate 72 is prevented from easily rotating. Since the materials of the upper protective cover 4, the lower protective cover 5, the support block 6 and the locking mechanism 7 are all made of insulating metal, they can have good thermal insulation performance to prevent burns during later maintenance.

[0031] Example 2: Reference Figure 3-Figure 4 , which is basically the same as Example 1, and further: a protective sleeve 8 is sleeved on the surface of the connecting wire harness 2, and the protective sleeve 8 is clamped between the upper protective sleeve 4 and the lower protective sleeve 5. The protective sleeve 8 includes a corrugated tube 81 sleeved on the surface of the connecting wire harness 2, and one end of the corrugated tube 81 is sleeved between the upper protective sleeve 4 and the lower protective sleeve 5. The protective sleeve 8 includes a corrugated tube 81 sleeved on the surface of the connecting wire harness 2, and one end of the corrugated tube 81 is sleeved between the upper protective sleeve 4 and the lower protective sleeve 5.

[0032] The protective cover 8 can be sleeved on the surface of the connecting harness 2, so that it can protect the surface of the connecting harness 2, and the protective cover 8 is installed between the upper protective cover 4 and the lower protective cover 5, so that the connection between the sensor head 3 and the harness plug 21 can be sealed, and at the same time it can provide support to prevent excessive bending and breakage. The bellows 81 is sleeved on the surface of the connecting harness 2 to prevent the surface of the connecting harness 2 from slipping, and then the outer insulation cover 82 and the inner insulation cover 83 are provided to respectively clamp the inner and outer sides of the upper protective cover 4 and the lower protective cover 5 to play a sealing role, and the outer insulation cover 82 and the inner insulation cover 83 are provided with insulation materials to improve the heat resistance of the surface of the connecting harness 2.

[0033] Example 3: Reference Figure 6 and Figure 7 , which is basically the same as Example 1, and furthermore, the locking mechanism 7 includes a fixed shell 711 fixed to the surface of the upper protective cover 4 and the lower protective cover 5, and two symmetrical metal pull ropes 712 are arranged inside the fixed shell 711, and one end of the two metal pull ropes 712 passes through the upper protective cover 4, the lower protective cover 5 and the support block 6 and is fixedly connected to a movable splint 713, and the movable splint 713 is sleeved in the upper protective cover 4 and the lower protective cover 5, and the surface of the metal pull rope 712 is threadedly connected to a rotating screw 714, and the end of the rotating screw 714 is rotatably connected to an extrusion plate 715 through a bearing, and the surface of the extrusion plate 715 is attached to the metal pull rope 712, and a limiting groove 716 is provided inside the upper protective cover 4 and the lower protective cover 5, and the internal sliding connection of the limiting block 717 of the limiting groove 716 is fixed to the movable splint 713

[0034] In the present invention, the two ends of the two metal pull ropes 712 inside the fixed shell 711 can be pulled symmetrically and oppositely, so that the movable clamping plates 713 in the upper protective cover 4 and the lower protective cover 5 can be respectively driven to approach each other, so that the two movable clamping plates 713 are respectively located on the sides of the sensor head 3 and the wiring harness plug 21, so as to limit the sensor head 3 and the wiring harness plug 21 on both sides, and then the screw 714 is rotated on the fixed shell 711 to rotate the extrusion plate 715 so as to move and contact the surface of the movable clamping plate 713 to squeeze and fix it, thereby preventing the movable clamping plate 713 from loosening, and the internal limit block 717 of the limit groove 716 slides down, which can play a guiding and limiting role when the movable clamping plate 713 moves.

[0035] In addition, the extrusion plate 715 slides into the fixed housing 711, and the extrusion plate 715 does not rotate when adjusted up and down.

[0036] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wiring harness protection assembly for a nitrogen oxide sensor, comprising a connecting plug (1), and a connecting wiring harness (2) connected to an end of the connecting plug (1), wherein the end of the connecting wiring harness (2) is connected to a wiring harness plug (21), and the end of the wiring harness plug (21) is connected to a sensor head (3), characterized in that: Also includes: An upper protective cover (4) is installed at the connection between the wiring harness plug (21) and the sensor head (3) to protect the upper surface; A lower protective cover (5) is installed at the connection between the wiring harness plug (21) and the sensor head (3) to protect the lower surface, and the lower protective cover (5) is connected to the upper protective cover (4) by bolts; Support blocks (6) are respectively fixed inside the upper protective cover (4) and the lower protective cover (5) to protect the outer side of the sensor head (3); The locking mechanisms (7) are respectively arranged inside the upper protective cover (4) and the lower protective cover (5) and are used to limit the sides of the wiring harness plug (21) and the sensor head (3).

2. The wiring harness protection assembly for a nitrogen oxide sensor according to claim 1, characterized in that: The locking mechanism (7) includes a bidirectional screw rod (71) that rotates inside the upper protective sleeve (4) and the lower protective sleeve (5) through a bearing, and the surface of the bidirectional screw rod (71) is threadedly connected to two arc-shaped clamping plates (72), and the arc-shaped clamping plates (72) are respectively located on the side of the sensor head (3) and the wiring harness plug (21), and the end of the bidirectional screw rod (71) passes through the upper protective sleeve (4) and extends outside to be fixedly connected to a turning handle (73).

3. The wiring harness protection assembly for a nitrogen oxide sensor according to claim 1, characterized in that: A protective sleeve (8) is sleeved on the surface of the connecting wire harness (2), and the protective sleeve (8) is clamped between the upper protective sleeve (4) and the lower protective sleeve (5).

4. The wiring harness protection assembly for a nitrogen oxide sensor according to claim 3, characterized in that: The protective sleeve (8) comprises a corrugated tube (81) sleeved on the surface of the connecting harness (2), and one end of the corrugated tube (81) is sleeved between the upper protective sleeve (4) and the lower protective sleeve (5).

5. The wiring harness protection assembly for a nitrogen oxide sensor according to claim 4, characterized in that: An outer heat-insulating sleeve (82) and an inner heat-insulating sleeve (83) are fixedly connected to the surface of the bellows (81), and the outer heat-insulating sleeve (82) and the inner heat-insulating sleeve (83) are respectively located on the inner and outer sides of the upper protective sleeve (4).

6. The wiring harness protection assembly for a nitrogen oxide sensor according to claim 2, characterized in that: A guide groove (74) is provided inside the upper protective cover (4) and the lower protective cover (5). A guide block (75) is slidably connected inside the guide groove (74). The end of the guide block (75) is fixed on the arc-shaped clamping plate (72).

7. The wiring harness protection assembly for a nitrogen oxide sensor according to claim 1, characterized in that: The upper protective cover (4), the lower protective cover (5), the support block (6) and the locking mechanism (7) are all made of heat-insulating metal.

8. The wiring harness protection assembly for a nitrogen oxide sensor according to claim 1, characterized in that: The locking mechanism (7) comprises a fixed shell (711) fixed on the surface of the upper protective sleeve (4) and the lower protective sleeve (5), two symmetrical metal pull ropes (712) are arranged inside the fixed shell (711), one end of the two metal pull ropes (712) respectively passes through the upper protective sleeve (4), the lower protective sleeve (5) and the support block (6) and is fixedly connected to a movable clamping plate (713), and the movable clamping plate (713) is sleeved in the upper protective sleeve (4) and the lower protective sleeve (5), the surface of the metal pull rope (712) is threadedly connected to a rotating screw (714), and the end of the rotating screw (714) is rotatably connected to an extrusion plate (715) through a bearing, and the surface of the extrusion plate (715) is attached to the metal pull rope (712).

9. The wiring harness protection assembly for a nitrogen oxide sensor according to claim 8, characterized in that: Limiting grooves (716) are provided inside the upper protective cover (4) and the lower protective cover (5), and the limiting grooves (716) are internally slidably connected to limiting blocks (717), and the ends of the limiting blocks (717) are fixed on the movable splint (713).

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