CN218956523U

CN218956523U - Insulation sealing structure of nitrogen-oxygen sensor

Info

Publication number: CN218956523U
Application number: CN202223057323.3U
Authority: CN
Inventors: 曾咏平; 李明; 张光旭
Original assignee: Wuhan Zirconia Electronic Technology Co ltd
Current assignee: Wuhan Zirconia Electronic Technology Co ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-05-02
Anticipated expiration: 2032-11-17

Abstract

The utility model discloses an insulating sealing structure of a nitrogen-oxygen sensor, which comprises a lower shell and an upper shell, wherein an annular groove is formed in the upper side wall of the lower shell, a plurality of beam blocks are symmetrically and fixedly connected to the inner wall of the annular groove, positioning rods are symmetrically and fixedly connected to the upper side wall of each beam block, the upper shell is arranged on the upper side wall of the lower shell, an annular protruding block matched with the annular groove and the beam blocks is welded on the inner top wall of the upper shell, a matching groove matched with the beam blocks is formed in the lower side wall of the annular protruding block, and a plurality of matching grooves are symmetrically and fixedly connected to the lower side wall of the annular protruding block. The device avoids the problem that the nitrogen-oxygen sensor is difficult to detach due to the fact that the sealant is smeared by the device, and the outer walls of the lower shell and the upper shell are sleeved on the outer fixing ring plate. And through the cooperation use of bolt and nut for the installation and the dismantlement of epitheca and inferior valve become very convenient, provide the convenience for nitrogen oxygen sensor's later maintenance.

Description

Insulation sealing structure of nitrogen-oxygen sensor

Technical Field

The utility model relates to the technical field of nitrogen and oxygen sensors, in particular to an insulating sealing structure of a nitrogen and oxygen sensor.

Background

The nitrogen-oxygen sensor consists of a sensor probe and an electric control unit, wherein the sensor probe and the electric control unit are connected through a wire harness, and can be used for measuring the concentration of nitrogen oxides (a mixture of nitrogen oxides such as NO and N02) in tail gas and the concentration of oxygen, and can be used in an SCR system of a diesel engine to realize closed-loop control of NOx or in vehicle-mounted diagnosis (OBD) of gasoline and diesel engines.

In order to enhance the waterproof performance of the existing nitrogen-oxygen sensor, a sealant is generally directly smeared between a nitrogen-oxygen sensor body and a protective aluminum shell, the protective aluminum shell is adhered to the sensor body, the sensor body is subjected to waterproof treatment, and the nitrogen-oxygen sensor is inconvenient to disassemble due to the fact that the sealant is strong in adhesion, so that inconvenience is brought to maintenance of the nitrogen-oxygen sensor; for this purpose, an insulating sealing structure of a nitrogen-oxygen sensor is proposed.

Disclosure of Invention

The utility model aims to solve the problems in the background art and provides an insulating sealing structure of a nitrogen-oxygen sensor.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides an insulating seal structure of nitrogen oxygen sensor, includes inferior valve and epitheca, the annular groove has been seted up to the last lateral wall of inferior valve, a plurality of beam pieces of inner wall symmetry fixedly connected with of annular groove, every the equal symmetrical fixedly connected with locating lever of last lateral wall of beam piece, the last lateral wall of inferior valve is provided with the epitheca, the interior roof welding of epitheca has the annular lug that matches jointly with annular groove and beam piece, the matching groove owing to beam piece assorted is seted up to the lower lateral wall of annular lug, a plurality of locating holes that are located the matching groove outside, and with locating lever assorted of lower lateral wall symmetry fixedly connected with of annular lug, the ring channel has been seted up to the outer wall symmetry of inferior valve and epitheca, is located the equal cover of ring channel of same one side is equipped with the fixed ring board, every all set up the through-hole on the fixed ring board, every all insert in the through-hole and be equipped with the bolt, every the outer wall of bolt all passes through nut fixed connection.

Preferably, each beam block is made of non-metal materials.

Preferably, an arc-shaped notch is formed in the upper side wall of each beam block.

Preferably, a protective pad is mounted on the inner wall of each fixed ring plate.

Preferably, the outer wall of the annular projection is provided with a gasket.

Compared with the prior art, the insulation sealing structure of the nitrogen-oxygen sensor has the advantages that:

1. the nitrogen-oxygen sensor is placed on the beam block in the lower shell, the upper shell is covered on the lower shell, the annular projection of the upper shell is abutted against the beam block, the nitrogen-oxygen sensor is sealed and fixed in the lower shell and the upper shell, and the problem that the nitrogen-oxygen sensor is difficult to detach due to the fact that sealant is smeared is avoided by the device;

2. the upper shell, the lower shell, the annular groove, the fixed ring plate, the bolts and the nuts are arranged, and the outer walls of the lower shell and the upper shell are sleeved on the fixed ring plate outside. The upper shell and the lower shell are convenient to mount and dismount by the cooperation of the bolts and the nuts, so that convenience is provided for the later maintenance of the nitrogen-oxygen sensor;

in summary, the device avoids the problem that the nitrogen-oxygen sensor is difficult to disassemble due to the application of the sealant, and the outer walls of the lower shell and the upper shell are sleeved with the outer fixing ring plate. And through the cooperation use of bolt and nut for the installation and the dismantlement of epitheca and inferior valve become very convenient, provide the convenience for nitrogen oxygen sensor's later maintenance.

Drawings

FIG. 1 is a perspective view of an insulation sealing structure of a nitrogen-oxygen sensor according to the present utility model;

FIG. 2 is a perspective view of a lower shell in an insulation sealing structure of a nitrogen-oxygen sensor according to the present utility model;

fig. 3 is a perspective view of an upper case in an insulation sealing structure of a nitrogen-oxygen sensor according to the present utility model.

In the figure: the device comprises a lower shell 1, an annular groove 2, a 3-beam block, an arc notch 4, a 5 positioning rod, an upper shell 6, an annular bump 7, a matching groove 8, a 9 positioning hole, an annular groove 10, a fixing ring plate 11, a 12 bolt and a 13 nut.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1-3, an insulation sealing structure of a nitrogen-oxygen sensor comprises a lower shell 1 and an upper shell 6, wherein an annular groove 2 is formed in the upper side wall of the lower shell 1, a plurality of binding blocks 3 are symmetrically and fixedly connected to the inner wall of the annular groove 2, each binding block 3 is made of a nonmetallic material, an arc notch 4 is formed in the upper side wall of each binding block 3, a positioning rod 5 is symmetrically and fixedly connected to the upper side wall of each binding block 3, an upper shell 6 is arranged on the upper side wall of the lower shell 1, an annular projection 7 matched with the annular groove 2 and the binding blocks 3 is welded on the inner top wall of the upper shell 6, a sealing gasket is arranged on the outer wall of the annular projection 7, a matching groove 8 matched with the binding blocks 3 is formed in the lower side wall of the annular projection 7, a plurality of positioning holes 9 positioned on the outer side of the matching groove 8 are symmetrically and fixedly connected with the annular projection 7, annular grooves 10 are symmetrically formed in the outer walls of the lower shell 1 and the upper shell 6, a fixing ring plate 11 is sleeved on the inner wall of the annular groove 10 positioned on the same side, a nut 12 is arranged on the inner wall of each fixing ring plate 11, and each fixing bolt 12 is connected with a protecting bolt 13 through each protecting bolt through hole 12;

the nitrogen-oxygen sensor is placed on the beam block 3 in the lower shell 1, the upper shell 6 is covered on the lower shell 1, the annular protruding block 7 of the upper shell 6 is abutted against the beam block 3, the nitrogen-oxygen sensor is sealed and fixed in the lower shell 1 and the upper shell 6, the device avoids the smearing of sealant, the problem that the nitrogen-oxygen sensor is difficult to detach is solved, and the outer walls of the lower shell 1 and the upper shell 6 are sleeved with the outer fixing ring plate 11. And through the cooperation of bolt 12 and nut 13, make the installation and the dismantlement of epitheca 6 and inferior valve 1 become very convenient, provide the convenience for the later maintenance of nitrogen oxygen sensor.

Further, the above-described fixed connection is to be understood in a broad sense, unless explicitly stated and defined otherwise, as being, for example, welded, glued, or integrally formed, as is well known to those skilled in the art.

The principle of operation of the present utility model will now be described as follows:

when the nitrogen-oxygen sensor is used, the nitrogen-oxygen sensor is placed on the beam block 3 in the lower shell 1, the upper shell 6 is covered on the lower shell 1, the annular protruding block 7 of the upper shell 6 is abutted against the beam block 3, so that the nitrogen-oxygen sensor is sealed and fixed in the lower shell 1 and the upper shell 6, the application of sealant is avoided by the nitrogen-oxygen sensor fixing device, the problem that the nitrogen-oxygen sensor is difficult to detach is solved, and the outer walls of the lower shell 1 and the upper shell 6 are sleeved with the outer fixing ring plate 11. And through the cooperation of bolt 12 and nut 13, make the installation and the dismantlement of epitheca 6 and inferior valve 1 become very convenient, provide the convenience for the later maintenance of nitrogen oxygen sensor.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides an insulating seal structure of nitrogen oxygen sensor, includes inferior valve (1) and epitheca (6), its characterized in that, annular groove (2) have been seted up to the last lateral wall of inferior valve (1), a plurality of bundle pieces (3) of inner wall symmetry fixedly connected with of annular groove (2), every the equal symmetry fixedly connected with locating lever (5) of last lateral wall of bundle piece (3), the last lateral wall of inferior valve (1) is provided with epitheca (6), the welding of the inner roof of epitheca (6) has annular lug (7) with annular groove (2) and bundle piece (3) common match, annular lug (7)'s lower lateral wall has been seted up because bundle piece (3) assorted matching groove (8), a plurality of being located matching groove (8) outsides of lower lateral wall symmetry fixedly connected with of annular lug (7), and with locating lever (5) assorted locating hole (9), outer wall symmetry of inferior valve (1) and epitheca (6) has seted up (10) being located with the outer wall symmetry of one side annular groove (10) is equipped with annular groove (11) each through-hole (12) all set up on every fixed bolt (12) each annular groove.

2. An insulating sealing structure of a nitrogen-oxygen sensor according to claim 1, characterized in that each of said beam blocks (3) is made of a non-metallic material.

3. The insulation sealing structure of the nitrogen-oxygen sensor according to claim 1, wherein the upper side wall of each beam block (3) is provided with an arc-shaped notch (4).

4. An insulating sealing structure of a nitrogen-oxygen sensor according to claim 1, characterized in that the inner wall of each of the fixing ring plates (11) is provided with a protective pad.

5. An insulating sealing structure of a nitrogen-oxygen sensor according to claim 1, characterized in that the outer wall of the annular projection (7) is provided with a gasket.