Hexagonal base for packaging automobile exhaust sensor

Abstract

The utility model discloses a hexagonal base for packaging an automobile exhaust sensor, and relates to the technical field of hexagonal bases. The device comprises a hexagonal main body which is provided with a through sensor installation channel; and the upper connecting part is fixedly mounted above the hexagonal main body and is of a hollow cylindrical structure, and an annular chamfer is arranged on the inner wall of the upper connecting part and is used for guiding the mounting of a sensor probe. The sensor probe is guided to accurately enter the mounting channel through the annular chamfer, the firmness of the sensor probe is ensured through threaded connection of the threaded groove and the tail gas discharge system, meanwhile, disassembly and maintenance are convenient, the lower threaded part is in threaded connection with the tail gas discharge system component, the stability of the base in a vibration environment is enhanced, looseness is prevented, and the heat dissipation effect is good. The contact area is increased through the heat dissipation fins and the heat dissipation grooves, the heat conduction path is optimized, local overheating is avoided, heat dissipation is further accelerated through the metal heat conduction wires embedded in the reinforcing ribs, stable performance of the sensor is guaranteed, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to hexagonal base technology field, concretely relates to a hexagonal base of automobile exhaust sensor package. BACKGROUND

[0002] The automobile exhaust sensor is used for monitoring automobile exhaust emission components, plays a key role in automobile exhaust purification and engine working condition control.

[0003] The existing tail gas sensor packaging base has some deficiencies in structural design, on the one hand, in the aspect of installation stability, the existing base structure is difficult to resist complex vibration environment in the process of automobile driving. In the process of automobile driving, different degrees of vibration will be produced due to factors such as road bumping and engine operation, and the connection mode of the existing base and automobile exhaust emission system components is not firm enough, and loose phenomenon is easy to appear under vibration, once loose, the installation position of the sensor is offset, which will lead to inaccurate detection data, and even the gap between the sensor and the exhaust emission system may be produced, the normal flow of exhaust gas is affected, and the normal operation of the exhaust gas monitoring system is interfered, the accurate monitoring of automobile exhaust emission is difficult, on the other hand, in the aspect of heat dissipation performance, the existing base also has obvious defects. The exhaust sensor will produce heat in the working process, if the heat cannot be dissipated in time, the internal temperature of the sensor will rise, when the sensor works in high temperature environment for a long time, its performance will gradually decrease, the detection accuracy is reduced, the response speed is slow, and even it may be damaged due to overheating, thereby shortening the service life of the sensor, increasing the maintenance cost and replacement frequency of the automobile exhaust monitoring system, and being not conducive to the long-term stable operation of the automobile exhaust monitoring system. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a hexagonal base of automobile exhaust sensor package.

[0005] The utility model discloses in order to realize above-mentioned purpose specifically adopts following technical scheme: a hexagonal base of automobile exhaust sensor package, include: hexagonal main part, be equipped with the sensor installation passageway that penetrates on the hexagonal main part, the upper connecting portion is fixedly installed in the top of hexagonal main part, and it is hollow cylinder structure, and the inner wall is equipped with annular chamfer, is used for guiding the installation of sensor probe, lower screw portion, the lower screw portion is fixedly installed in the below of hexagonal main part, and it is used for with the corresponding component screw connection of automobile exhaust emission system, thread groove, the thread groove constructs in the inner circumferential side of hexagonal main part, and it is used for with sensor probe shell screw connection, the fin of heat dissipation, the quantity is multiple, multiple the fin of heat dissipation is annular array distribution fixed installation in the top of hexagonal main part, the hexagonal main part six side faces are equipped with the dispersed heat groove that extends axially respectively between two adjacent the dispersed heat groove between Setting has the reinforcing rib, the metal heat conduction wire is embedded in the reinforcing rib interior.

[0006] Further, the hexagonal main body is a regular hexagon structure, and a surface thereof is provided with anti-skid stripes.

[0007] Further, the top and bottom ends of the hexagonal main body are provided with a plurality of heat dissipation grooves, the cross section of the heat dissipation groove is in a parabolic shape, the ratio of the groove depth to the height of the hexagonal main body is 1:4-1:3, and the bottom of the inner wall of the heat dissipation groove is provided with a plurality of semispherical pits distributed at intervals.

[0008] Further, the metal heat conduction wire is a copper-aluminum alloy wire, the ratio of the diameter of the metal heat conduction wire to the width of the reinforcing rib is 1:5-1:3, and the surface of the metal heat conduction wire is coated with a ceramic insulation layer.

[0009] Further, a plurality of heat dissipation holes are formed on the heat dissipation fin, and the plurality of heat dissipation holes are arrayed.

[0010] Further, a plurality of guide limiting plates are fixedly installed at the bottom of the lower screw portion, and the plurality of guide limiting plates are annularly arrayed.

[0011] Further, a spiral air guide groove is formed on the inner wall of the upper connecting portion, the groove width is 1-2 mm, and the depth is 0.5-1 mm.

[0012] Further, a sealing groove is formed at the top of the hexagonal main body, and a sealing ring is fixedly installed in the sealing groove.

[0013] The utility model has the advantages as follows:

[0014] The utility model discloses a annular chamfer guide sensor probe is accurate to enter the installation passageway, utilizes the thread groove with its thread connection to ensure its firmness, convenient to dismantle maintenance, and the thread connection of lower threaded portion and exhaust emission system part, the stability of base under the vibration environment is enhanced, prevents the loosening, and in the heat dissipation aspect, through the heat dissipation fin and dispersion heat groove increase contact area, optimize heat conduction path, avoid local overheating, and the metal heat conduction wire of embedded rib in further speed up heat dissipation, guarantee sensor performance stability, prolong the life. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the three-dimensional structure diagram of the utility model;

[0016] Figure 2 It is the three-dimensional structure of the utility model Figure 1 Cutaway view;

[0017] Figure 3 It is another three-dimensional structure cutaway view of the utility model Figure 1 ;

[0018] Figure 4 It is another three-dimensional structure diagram of the utility model.

[0019] Reference signs: 1, hexagonal main body;2, upper connecting portion;3, lower threaded portion;4, thread groove;5, heat dissipation fin;6, dispersion heat groove;7, reinforcing rib;8, metal heat conduction wire;9, heat dissipation groove;10, semispherical dimple;11, guide limiting plate;12, spiral air guide groove;13, sealing ring. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, below, the technical scheme in the utility model embodiment will be clearly and completely described with the drawings in the utility model embodiment.

[0021] As Figures 1-4 Indicated, the utility model discloses an embodiment to propose a kind of hexagonal base of automobile exhaust sensor packaging, comprising: hexagonal main body 1, the hexagonal main body 1 is equipped with the sensor installation passageway of penetration;

[0022] Upper connecting portion 2, the upper connecting portion 2 is fixedly installed in the upper of the hexagonal main body 1, and it is hollow cylindrical structure, inner wall is equipped with annular chamfer, for guiding the installation of sensor probe;

[0023] Lower threaded portion 3, the lower threaded portion 3 is fixedly installed in the lower of the hexagonal main body 1, and it is used for with the corresponding component of automobile exhaust emission system thread connection;

[0024] Threaded grooves 4 are configured on the inner circumferential side of the hexagonal body 1 for threaded connection with the sensor probe shell; threaded grooves 4 can increase the surface area of the sensor probe shell for heat conduction and heat dissipation.

[0025] The heat dissipation fins 5 are arranged in a ring array on the top end of the hexagonal body 1, and the six sides of the hexagonal body 1 are respectively provided with axially extending dispersion heat grooves 6, and the adjacent two dispersion heat grooves 6 are provided with reinforcing ribs 7, and the reinforcing ribs 7 are embedded with metal heat conducting wires 8.

[0026] When the exhaust gas sensor needs to be installed in the automobile exhaust emission system, first insert the sensor probe into the annular chamfer of the hollow cylindrical structure of the upper connecting part 2 of the hexagonal base. The annular chamfer plays a key guiding role, which can ensure that the sensor probe enters the sensor installation channel in the correct direction, avoiding damage or loose installation caused by improper installation angle. With further insertion of the sensor probe, its shell cooperates with the threaded grooves 4 on the inner circumferential side of the hexagonal body 1, and the sensor probe is fixed in the hexagonal body 1 by threaded connection. This threaded connection not only ensures the stability of the sensor probe during installation, but also facilitates subsequent disassembly and maintenance.

[0027] At the same time, the lower threaded part 3 of the hexagonal body 1 is threaded with the corresponding parts of the automobile exhaust emission system to firmly install the entire hexagonal base on the exhaust emission system. The threaded connection structure design of the upper and lower ends makes the entire hexagonal base maintain high stability in the vibration environment during automobile driving, effectively preventing loosening caused by vibration, thereby ensuring that the exhaust gas sensor is always in the correct working position and ensuring the accuracy and reliability of the exhaust gas monitoring data.

[0028] In the working process of the exhaust gas sensor, heat will be generated. In order to dissipate this heat in time, the hexagonal base adopts a unique heat dissipation structure. The top end of the hexagonal body 1 is fixedly installed with a plurality of annularly arrayed heat dissipation fins 5, which can significantly increase the contact area of the base with the surrounding air, accelerate the transfer and dissipation of heat. At the same time, the six sides of the hexagonal body 1 are respectively provided with axially extending dispersion heat grooves 6, which further optimize the heat conduction path, so that heat can be more evenly distributed on the surface of the entire hexagonal body 1, avoiding the occurrence of local overheating phenomenon. In addition, a reinforcing rib 7 is arranged between two adjacent dispersion heat grooves, which not only enhances the overall structural strength of the hexagonal base, so that it can better resist various external force impacts during vehicle driving, but also has a metal heat conducting wire 8 embedded therein. The metal heat conducting wire 8 has good heat conducting performance, further accelerating the heat dissipation speed, effectively reducing the temperature of the sensor working environment, thereby ensuring the performance stability of the sensor in the long-term working process, prolonging its service life, and meeting the high performance requirements of the automobile exhaust monitoring system for the sensor packaging base.

[0029] As shown in Figure 1 some embodiments, the hexagonal body 1 is in a regular hexagonal structure, and the surface is provided with anti-skid stripes.

[0030] The regular hexagonal structure not only has good mechanical properties and stability, but also is more reasonable in space utilization, and can better adapt to the installation space of the automobile exhaust emission system. The design of the anti-skid stripes further enhances the safety of the hexagonal base during installation and operation. During installation or disassembly, the operator can hold the hexagonal base more firmly through the anti-skid stripes to prevent the base from falling due to slippery hands, and also reduces the risk of injury to the operator.

[0031] As shown in Figure 3 some embodiments, the top end and the bottom end of the hexagonal body 1 are both provided with a plurality of heat dissipation grooves 9, the cross section of the heat dissipation grooves 9 is in a parabolic shape, the ratio of the groove depth to the height of the hexagonal body 1 is 1:4~1:3, and the bottom of the inner wall of the heat dissipation grooves 9 is provided with a plurality of spaced half-spherical dimples 10.

[0032] The parabolic heat dissipation groove 9 design can further optimize the heat conduction path, so that the heat can flow more smoothly in the heat dissipation groove 9, thereby improving the heat dissipation efficiency. At the same time, the bottom of the inner wall of the heat dissipation groove 9 is provided with a plurality of spaced half-spherical pits 10, which can increase the air flow in the heat dissipation groove 9, form a small vortex, and further promote heat dissipation. This setting not only improves the heat dissipation performance of the hexagonal base, but also enables the base to maintain good temperature stability under complex working conditions, providing a more stable working environment for the exhaust gas sensor and ensuring that it is always in the best working state during long-term operation.

[0033] As shown in Figure 3 In some embodiments, the metal heat-conducting wire 8 is a copper-aluminum alloy wire, and the ratio of the diameter of the metal heat-conducting wire 8 to the width of the reinforcing rib 7 is 1:5-1:3. The surface of the metal heat-conducting wire 8 is coated with a ceramic insulating layer.

[0034] The copper-aluminum alloy wire has excellent heat-conducting performance and mechanical strength, which can ensure efficient heat conduction while enhancing the structural stability of the entire reinforcing rib 7. In addition, the surface of the metal heat-conducting wire 8 is coated with a ceramic insulating layer. The ceramic insulating layer not only has good insulating properties, which can effectively prevent current leakage and ensure electrical safety during sensor operation, but also has certain high-temperature resistance, which can remain stable in high-temperature environments, further improving the reliability and durability of the hexagonal base.

[0035] As shown in Figure 1 In some embodiments, a plurality of heat dissipation holes are formed on the heat dissipation fin 5, and the plurality of heat dissipation holes are arranged in an array.

[0036] A plurality of heat dissipation holes are formed on the heat dissipation fin 5, and the plurality of heat dissipation holes are arranged in an array, further optimizing the air flow path, so that heat can be dissipated more quickly through air convection, improving the heat dissipation efficiency.

[0037] As shown in Figure 4 In some embodiments, a plurality of guide limiting plates 11 are fixedly installed at the bottom of the lower threaded part 3, and the plurality of guide limiting plates 11 are arranged in an annular array.

[0038] A plurality of guide limiting plates 11 are fixedly installed at the bottom of the lower threaded part 3, and the plurality of guide limiting plates 11 are arranged in an annular array. During installation, the guide limiting plates 11 can ensure the precise alignment and stable connection of the hexagonal base with the components of the automobile exhaust emission system, preventing deviation or misalignment during threaded connection, further improving the stability and reliability of the installation.

[0039] As shown in Figure 2As shown in the drawings, in some embodiments, the inner wall of the upper connecting part 2 is provided with a spiral air guide groove 12, the groove width is 1-2 mm, and the depth is 0.5-1 mm.

[0040] When the tail gas sensor works, there is a significant temperature difference and air pressure difference between the inside (contacting high-temperature tail gas) and the outside (contacting air) of the base. The spiral air guide groove 12 avoids seal failure or sensor measurement error caused by sudden change of air pressure by slowly releasing the internal pressure. The spiral structure forms a vortex effect, forcibly rotating the high-temperature tail gas along the groove body, prolonging the residence time of the gas in the channel, making the detection of the sensor probe more stable, and reducing the signal fluctuation caused by pulse tail gas.

[0041] As shown in the drawings, in some embodiments, the top of the hexagonal body 1 is configured with a sealing groove, and a sealing ring 13 is fixedly installed inside the sealing groove. Figure 2

[0042] The sealing ring 13 can effectively prevent tail gas leakage, ensure that the tail gas will not be disturbed by the external environment during the sensor detection process, and also protect the sensor probe from being eroded by external pollutants, further improving the detection accuracy and service life of the sensor.

[0043] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.​

Claims

1. A hexagonal base for an automotive exhaust sensor package, characterized by, Include: Hexagonal body (1), the hexagonal body (1) is provided with a through sensor installation channel; Upper connecting part (2), the upper connecting part (2) is fixedly installed on the upper side of the hexagonal body (1), which is a hollow cylindrical structure, and the inner wall is provided with an annular chamfer for guiding the installation of the sensor probe; Lower threaded part (3), the lower threaded part (3) is fixedly installed on the lower side of the hexagonal body (1), which is used for threaded connection with the corresponding parts of the automobile exhaust emission system; Threaded groove (4), the threaded groove (4) is configured on the inner circumferential side of the hexagonal body (1), which is used for threaded connection with the sensor probe shell; The number of heat dissipation fins (5) is multiple, multiple heat dissipation fins (5) are arranged in an annular array and fixedly installed on the top end of the hexagonal body (1), the hexagonal body (1) six side faces are respectively provided with axially extending dispersion heat grooves (6), and the adjacent two dispersion heat grooves (6) are provided with reinforcing ribs (7), and the reinforcing ribs (7) are embedded with metal heat conducting wires (8).

2. A hexagonal base for a sensor package for an automotive exhaust gas sensor according to claim 1, characterized in that The hexagonal body (1) is a regular hexagon structure, and the surface is provided with anti-skid stripes.

3. The hexagonal base of a sensor package for an automotive exhaust gas sensor according to claim 1, wherein The top and bottom ends of the hexagonal body (1) are provided with a plurality of heat dissipation grooves (9), the cross section of the heat dissipation groove (9) is a parabolic shape, the ratio of the groove depth to the height of the hexagonal body (1) is 1:4~1:3, and the bottom of the inner wall of the heat dissipation groove (9) is provided with a plurality of semispherical pits (10) distributed at intervals.

4. The hexagonal base of a sensor package for an automotive exhaust gas sensor according to claim 1, wherein The metal heat conducting wire (8) is a copper-aluminum alloy wire, the ratio of its diameter to the width of the reinforcing rib (7) is 1:5~1:3, and the surface of the metal heat conducting wire (8) is coated with a ceramic insulating layer.

5. The hexagonal base of a sensor package for an automotive exhaust gas sensor according to claim 1, wherein A plurality of heat dissipation holes are formed on the heat dissipation fin (5), and the plurality of heat dissipation holes are arranged in an array.

6. The hexagonal base of a sensor package for an automotive exhaust gas sensor according to claim 1, wherein A plurality of guide limiting plates (11) are fixedly installed on the bottom of the lower threaded part (3), and the plurality of guide limiting plates (11) are arranged in an annular array.

7. The hexagonal base of a sensor package for an automotive exhaust gas sensor according to claim 1, wherein The inner wall of the upper connecting part (2) is provided with a spiral air guide groove (12), the groove width is 1-2mm, and the depth is 0.5-1mm.

8. The hexagonal base of a sensor package for an automotive exhaust gas sensor according to claim 1, wherein The top of the hexagonal body (1) is provided with a sealing groove, and a sealing ring (13) is fixedly installed in the sealing groove.

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