Automobile oxygen sensor mounting seat

Abstract

The utility model provides an automobile oxygen sensor mounting seat which comprises a mounting seat body, the lower end of the mounting seat body is connected with a protective cover in an automobile oxygen sensor, and the upper end of the mounting seat body is connected with a shell in the automobile oxygen sensor; a first annular step is arranged on the outer wall of the lower end of the mounting base body, the upper end of the protective cover is inserted into the first annular step and abuts against the upper end of the first annular step, and the inner circumferential wall of the protective cover is attached to the side wall of the first annular step; a first annular groove is formed in the side wall of the first annular step, the first annular groove is filled with first welding flux, and the protection cover and the mounting base body are welded and fixed through the first welding flux and are sealed in the circumferential direction; according to the utility model, the coaxiality after the protection cover and the mounting seat body are assembled can be ensured, and the welding firmness of the protection cover and the mounting seat body can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to an automobile oxygen sensor mounting seat. Background Art

[0002] The automotive oxygen sensor mounting base is a fixed component in the automotive oxygen sensor, which is used to be threadedly connected to the exhaust pipe of the automobile so that the automotive oxygen sensor can be assembled on the exhaust pipe of the automobile as a whole; the automotive oxygen sensor mounting base currently on the market is fixed to the protective cover in the automotive oxygen sensor by adopting the end welding fixation method, that is, the end of the mounting base and the end of the protective cover are abutted and fixed by soldering. However, using this method, it is difficult to ensure the coaxiality of the mounting base and the protective cover, and there is a disadvantage that the welding firmness of the mounting base and the protective cover is poor. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an automobile oxygen sensor mounting seat, which can ensure the coaxiality of the protective cover and the mounting seat body after assembly and can improve the welding firmness of the protective cover and the mounting seat body.

[0004] The utility model provides a mounting base for an automobile oxygen sensor, comprising a mounting base body, wherein the lower end of the mounting base body is connected to a protective cover in the automobile oxygen sensor, and the upper end of the mounting base body is connected to a shell in the automobile oxygen sensor; a regular hexagonal annular boss is provided on the outer wall of the middle part of the mounting base body, and an external thread is provided on the outer peripheral wall of the mounting base body located below the annular boss; a first annular step is provided on the outer wall of the lower end of the mounting base body, the upper end of the protective cover is inserted into the first annular step and abuts against the upper end of the first annular step, and the inner peripheral wall of the protective cover is in contact with the side wall of the first annular step; a first annular groove is provided on the side wall of the first annular step, the first annular groove is filled with a first solder, and the protective cover and the mounting base body are fixed by welding through the first solder and are circumferentially sealed.

[0005] After adopting the above structure, the utility model can ensure the coaxiality of the protective cover and the mounting seat body after assembly because the upper end of the protective cover is inserted into the first annular step and abuts against the upper end of the first annular step, and because the inner peripheral wall of the protective cover is in contact with the side wall of the first annular step. In addition, the protective cover and the mounting seat body are fixed by welding with the first solder located in the first annular groove, thereby having the advantage of a large contact area between the first solder and the protective cover and the mounting seat body, that is, it can improve the welding firmness of the protective cover and the mounting seat body.

[0006] In a possible embodiment, a first annular conical surface is provided on the outer wall of the lower end of the mounting seat body, and the first annular conical surface is used to cooperate with the inner wall of the protective cover to guide so that the upper end of the protective cover can be inserted into the first annular step; after adopting this structure, under the action of the first annular conical surface, in the process of inserting the upper end of the protective cover into the first annular step, the first annular conical surface can cooperate with the inner wall of the protective cover to guide so that the upper end of the protective cover can be inserted into the first annular step, that is, it can facilitate the cooperation and insertion of the upper end of the protective cover and the first annular step.

[0007] In one possible embodiment, a second annular step is provided on the outer wall of the upper end of the mounting seat body, the lower end of the shell is inserted into the second annular step and abuts against the lower end of the second annular step, and the inner circumferential wall of the shell is in contact with the side wall of the second annular step; a second annular groove is provided on the side wall of the second annular step, the second annular groove is filled with a second solder, and the shell and the mounting seat body are fixed and circumferentially sealed by welding with the second solder; after adopting this structure, since the lower end of the shell is inserted into the second annular step and abuts against the lower end of the second annular step, the coaxiality of the shell and the mounting seat body can be ensured, and the limiting effect on the shell and the mounting seat body can be achieved. In addition, after the shell and the mounting seat body are fixed by welding with the second solder located in the second annular groove, compared with the traditional shell and mounting seat body end welding method, the fixing firmness of the shell and the mounting seat body can be improved.

[0008] In one possible embodiment, a second annular conical surface is provided on the outer wall of the upper end of the mounting seat body, and the second annular conical surface is used to cooperate with the inner wall of the shell to guide so that the lower end of the shell can be inserted into the second annular step; after adopting this structure, under the action of the second annular conical surface, in the process of inserting the lower end of the shell into the second annular step, the second annular conical surface can cooperate with the inner wall of the shell to guide so that the lower end of the shell can be inserted into the second annular step, that is, it can facilitate the connection between the lower end of the shell and the second annular step.

[0009] In one possible embodiment, an annular embedding groove is provided on the outer wall of the mounting seat body between the annular boss and the external thread, and the annular embedding groove is used to engage with the inner edge of the gasket; after adopting this structure, after the gasket is sleeved on the outer wall of the mounting seat body, the inner edge of the gasket can engage with the annular embedding groove, so that during the process of connecting the mounting seat body to the automobile exhaust pipe via the external thread, the gasket can be prevented from detaching from the mounting seat body, that is, the gasket can be prevented from falling off, thereby facilitating the assembly of the mounting seat body and the automobile exhaust pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the main structure of the mounting base body;

[0011] Figure 2 It is a schematic cross-sectional view of the assembled mounting base body, protective cover and housing;

[0012] Figure 3 for Figure 2 The schematic diagram of the structure after enlarging at A in the middle;

[0013] Figure 4 for Figure 2 Schematic diagram of the structure after enlarging point B in the middle. DETAILED DESCRIPTION

[0014] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.

[0015] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0016] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0017] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] See also Figure 1-4As shown, the embodiment of the present application discloses an automotive oxygen sensor mounting base, including a mounting base body 1, the lower end of the mounting base body 1 is connected to the protective cover 2 in the automotive oxygen sensor, and the upper end of the mounting base body 1 is connected to the shell 3 in the automotive oxygen sensor; a regular hexagonal annular boss 11 is provided on the outer wall of the middle part of the mounting base body 1, and an external thread 12 is provided on the outer peripheral wall of the mounting base body 1 located below the annular boss 11; a first annular step 13 is provided on the outer wall of the lower end of the mounting base body 1, the upper end of the protective cover 2 is inserted into the first annular step 13 and abuts against the upper end of the first annular step 13, and the inner peripheral wall of the protective cover 2 is in contact with the side wall of the first annular step 13; a first annular groove 14 is provided on the side wall of the first annular step 13, and the first annular groove 14 is filled with a first solder 4, and the protective cover 2 and the mounting base body 1 are welded and fixed by the first solder 4 and circumferentially sealed.

[0019] A first annular conical surface 15 is provided on the outer wall of the lower end of the mounting seat body 1, and the first annular conical surface 15 is used to cooperate and guide with the inner wall of the protective cover 2 so that the upper end of the protective cover 2 can be inserted into the first annular step 13; after adopting this structure, under the action of the first annular conical surface, in the process of inserting the upper end of the protective cover into the first annular step, the first annular conical surface can cooperate and guide with the inner wall of the protective cover so that the upper end of the protective cover can be inserted into the first annular step, that is, it can facilitate the cooperation and insertion of the upper end of the protective cover and the first annular step.

[0020] A second annular step 16 is provided on the outer wall of the upper end of the mounting seat body 1, and the lower end of the shell 3 is inserted into the second annular step 16 and abuts against the lower end of the second annular step 16, and the inner circumferential wall of the shell 3 is in contact with the side wall of the second annular step 16; a second annular groove 17 is provided on the side wall of the second annular step 16, and the second annular groove 17 is filled with a second solder 5, and the shell 3 and the mounting seat body 1 are welded and fixed by the second solder 5 and circumferentially sealed; after adopting this structure, since the lower end of the shell is inserted into the second annular step and abuts against the lower end of the second annular step, the coaxiality of the shell and the mounting seat body can be ensured, and the limiting effect of the shell and the mounting seat body can be achieved. In addition, after the shell and the mounting seat body are welded and fixed by the second solder located in the second annular groove, compared with the traditional shell and mounting seat body end welding method, the fixing firmness of the shell and the mounting seat body can be improved.

[0021] A second annular conical surface 18 is provided on the outer wall of the upper end of the mounting seat body 1, and the second annular conical surface 18 is used to cooperate with the inner wall of the shell 3 for guidance so that the lower end of the shell 3 can be inserted into the second annular step 16; after adopting this structure, under the action of the second annular conical surface, in the process of inserting the lower end of the shell into the second annular step, the second annular conical surface can cooperate with the inner wall of the shell for guidance so that the lower end of the shell can be inserted into the second annular step, that is, it can facilitate the connection between the lower end of the shell and the second annular step.

[0022] An annular embedding groove 19 is provided on the outer wall of the mounting base body 1 between the annular boss 11 and the external thread 12. The annular embedding groove 19 is used to engage with the inner edge of the gasket. By adopting this structure, after the gasket is sleeved onto the outer wall of the mounting base body, the inner edge of the gasket can engage with the annular embedding groove. As a result, when the mounting base body is connected to the automobile exhaust pipe via the external thread, the gasket can be prevented from detaching from the mounting base body, that is, the gasket can be prevented from falling off, thereby facilitating the assembly of the mounting base body and the automobile exhaust pipe.

[0023] In the above structure, when the protective cover and the shell are assembled with the mounting seat body, the first solder and the second solder are firstly filled circumferentially in the first annular groove and the second annular groove respectively, and then the upper end of the protective cover is inserted into the first annular step and the upper end of the protective cover is abutted against the upper end of the first annular step, and the lower end of the shell is inserted into the second annular step and the lower end of the shell is abutted against the lower end of the second annular step, and then the protective cover, the shell and the mounting seat body are heated. At this time, the first solder can melt and adhere to the protective cover and the mounting seat body, and the second solder can melt and adhere to the shell and the mounting seat body, and then the heating of the protective cover, the shell and the mounting seat body is stopped. Finally, after the first solder and the second solder are cooled and solidified, the first solder can realize the welding and fixation of the protective cover and the mounting seat body, and the second solder can realize the welding and fixation of the shell and the mounting seat body.

[0024] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A mounting base for an automobile oxygen sensor, comprising a mounting base body (1), wherein the lower end of the mounting base body (1) is connected to a protective cover (2) in the automobile oxygen sensor, and the upper end of the mounting base body (1) is connected to a housing (3) in the automobile oxygen sensor; a regular hexagonal annular boss (11) is provided on the outer wall of the middle portion of the mounting base body (1), and an external thread (12) is provided on the outer peripheral wall of the mounting base body (1) below the annular boss (11); and the characteristics are: A first annular step (13) is provided on the outer wall of the lower end of the mounting seat body (1); the upper end of the protective cover (2) is inserted into the first annular step (13) and abuts against the upper end of the first annular step (13); the inner peripheral wall of the protective cover (2) is in contact with the side wall of the first annular step (13); a first annular groove (14) is provided on the side wall of the first annular step (13); the first annular groove (14) is filled with a first solder (4); the protective cover (2) and the mounting seat body (1) are fixed by welding through the first solder (4) and are circumferentially sealed.

2. The automotive oxygen sensor mounting base according to claim 1, characterized in that: A first annular conical surface (15) is provided on the outer wall of the lower end of the mounting seat body (1), and the first annular conical surface (15) is used to cooperate with the inner wall of the protective cover (2) to guide so that the upper end of the protective cover (2) can be inserted into the first annular step (13).

3. The automotive oxygen sensor mounting base according to claim 1 or 2, characterized in that: A second annular step (16) is provided on the outer wall of the upper end of the mounting seat body (1); the lower end of the shell (3) is inserted into the second annular step (16) and abuts against the lower end of the second annular step (16); the inner peripheral wall of the shell (3) is in contact with the side wall of the second annular step (16); a second annular groove (17) is provided on the side wall of the second annular step (16); the second annular groove (17) is filled with a second solder (5); the shell (3) and the mounting seat body (1) are fixed by welding through the second solder (5) and are circumferentially sealed.

4. The automotive oxygen sensor mounting base according to claim 3, characterized in that: A second annular conical surface (18) is provided on the outer wall of the upper end of the mounting seat body (1), and the second annular conical surface (18) is used to cooperate with the inner wall of the shell (3) to guide so that the lower end of the shell (3) can be inserted into the second annular step (16).

5. The automotive oxygen sensor mounting base according to claim 1, 2 or 4, characterized in that: An annular embedding groove (19) is provided on the outer wall of the mounting seat body (1) between the annular boss (11) and the external thread (12), and the annular embedding groove (19) is used to be embedded with the inner edge of the gasket.

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