ICV connecting structure

Abstract

The utility model relates to the technical field of ICV, and provides an ICV connecting structure, an ICV main body is provided with an inserting part and an abutting part, one end, close to the abutting part, of the inserting part is provided with a plurality of annular protrusions, and the annular protrusions abut against the inner wall of a reserved hole site; a first step and a second step are arranged on the side, close to the inserting part, of the abutting part and abut against the inner wall of the oil tank. By means of the technical scheme, the problems that in the prior art, when ICV welding installation is conducted, the sealing performance of a connecting structure is insufficient, and consequently fuel oil of a finished oil tank overflows, and excessive hydrocarbon is discharged are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of ICV, and specifically to an ICV connection structure. Background Art

[0002] With the continuous development of the automobile industry, the performance, safety and environmental protection requirements of the fuel system are getting higher and higher. The main function of the fuel tank ICV (Inertia Check Valve) is to prevent the fuel from flowing back during refueling and to prevent fuel leakage when the vehicle tilts or flips. However, when welding and installing the fuel tank ICV, the connection structure is not tight enough, which may cause fuel overflow and excessive hydrocarbon emissions in the finished fuel tank. Utility Model Content

[0003] The utility model provides an ICV connection structure, which solves the problem of insufficient sealing of the connection structure during ICV welding installation in the related art.

[0004] The technical solution of the utility model is as follows:

[0005] An ICV connection structure is used to fix the ICV body in a heated reserved hole on the inner wall of a fuel tank. The ICV body has an inserting portion and an abutting portion. The inserting portion has a plurality of annular protrusions at one end close to the abutting portion, and the annular protrusions abut against the inner wall of the reserved hole; the abutting portion has a first step and a second step at one side close to the inserting portion, and the first step and the second step both abut against the inner wall of the fuel tank.

[0006] Optionally, the abutting portion further has a plurality of first protrusions.

[0007] Optionally, the first protrusions are evenly distributed along the circumference of the ICV body axis.

[0008] Optionally, the first step side wall and the abutting portion have a first angle, and the first angle is α.

[0009] Optionally, the second step side wall and the abutting portion have a second angle, and the second angle is β.

[0010] Optionally, the first angle and the second angle are both smaller than 90°.

[0011] Optionally, the first step has a first annular groove, and the first annular groove has a plurality of first through holes.

[0012] Optionally, the first through holes are evenly distributed along the circumference of the ICV body axis.

[0013] Optionally, the cross-section of the annular protrusion is triangular.

[0014] The working principle and beneficial effects of the utility model are:

[0015] In the present utility model, in order to solve the problem that the sealing of the connection structure is insufficient during the welding and installation of the ICV, which leads to the fuel spillage and excessive emission of hydrocarbons in the finished fuel tank, an ICV connection structure is designed, in which a plug-in part and an abutment part are divided on the ICV body, a plurality of annular protrusions are arranged at one end of the plug-in part close to the abutment part, and a first step and a second step are arranged on one side of the abutment part close to the plug-in part. Specifically, when it is necessary to weld the ICV body to the side wall of the fuel tank, the reserved hole of the fuel tank is first heated to a specified temperature, and the plug-in part of the ICV body is inserted into the reserved hole on the fuel tank, so that the outer side of the plug-in part abuts against the inner side of the reserved hole of the fuel tank, and the annular protrusion abuts against the inner side of the reserved hole of the fuel tank, until the first step and the second step arranged at the abutment part abut against the inner wall of the fuel tank, and after the abutment is completed, the fuel tank side wall is cooled and shaped, and the welding operation of the ICV body is completed. The advantage is that the sealing performance is better after the welding of the ICV body is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a cross-sectional view of the structure of the utility model;

[0019] Figure 3 For this utility model Figure 2 A partial enlarged view of point A in the middle.

[0020] In the figure: 1, ICV body, 2, plug-in portion, 3, abutment portion, 201, annular protrusion, 301, first step, 302, second step, 303, first protrusion, 3011, first annular groove, 3012, first through hole. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0022] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0023] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0024] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] Reference Figure 1~Figure 3 , which is the first embodiment of the utility model, proposes an ICV connection structure, which is used to fix the ICV body 1 in a heated reserved hole on the inner wall of the fuel tank. The ICV body 1 has a plug-in portion 2 and a butt portion 3. The plug-in portion 2 has a plurality of annular protrusions 201 at one end close to the butt portion 3, and the annular protrusions 201 abut against the inner wall of the reserved hole; the butt portion 3 has a first step 301 and a second step 302 on one side close to the plug-in portion 2, and both the first step 301 and the second step 302 abut against the inner wall of the fuel tank.

[0026] In this embodiment, in order to solve the problem that the sealing of the connection structure is insufficient during the welding and installation of the ICV, which leads to fuel spillage and excessive emission of hydrocarbons in the finished fuel tank, an ICV connection structure is designed. The ICV body 1 is divided into a plug-in portion 2 and a butt portion 3, and a plurality of annular protrusions 201 are arranged at one end of the plug-in portion 2 close to the butt portion 3, and a first step 301 and a second step 302 are arranged on the side of the butt portion 3 close to the plug-in portion 2. Specifically, when it is necessary to weld the ICV body 1 to the side wall of the fuel tank, the reserved hole of the fuel tank is first heated to a specified temperature, and the plug-in portion 2 of the ICV body 1 is inserted into the reserved hole on the fuel tank, so that the outer side of the plug-in portion 2 abuts against the inner side of the reserved hole of the fuel tank, and the annular protrusion 201 abuts against the inner side of the reserved hole of the fuel tank, until the first step 301 and the second step 302 arranged at the butt portion 3 abut against the inner wall of the fuel tank, and after the abutment is completed, the side wall of the fuel tank is cooled and shaped, and the welding operation of the ICV body 1 is completed. The advantage is that the ICV body 1 has better sealing performance after welding, which can prevent fuel from spilling out of the finished fuel tank and reduce hydrocarbon emissions.

[0027] Furthermore, the abutting portion 3 also has a plurality of first protrusions 303 .

[0028] Furthermore, the first protrusions 303 are evenly distributed along the circumference of the axis of the ICV body 1 .

[0029] In this embodiment, a plurality of first protrusions 303 are added, and these first protrusions 303 are evenly distributed along the axis of the ICV body 1. The advantage is that the ICV body 1 can be prevented from accidentally rotating on the side wall of the fuel tank after welding. This design greatly enhances the stability of the connection and ensures that the position of the ICV body 1 is fixed during operation without being disturbed by external factors.

[0030] Furthermore, a first angle is formed between the side wall of the first step 301 and the abutting portion 3 , and the first angle is α.

[0031] Furthermore, the side wall of the second step 302 and the abutting portion 3 have a second angle, and the second angle is β.

[0032] Furthermore, the first angle and the second angle are both smaller than 90°.

[0033] In this embodiment, the first angle and the second angle are both less than 90°. This design brings many benefits, especially when the ICV body is welded, the first step 301 and the second step 302 can withstand greater axial force. In practical applications, this means that even in the face of complex working conditions and strong axial pressure, the connection structure can remain stable and ensure the normal operation of the equipment. At the same time, it can also greatly improve the sealing performance of the ICV body 1, avoid fuel spillage in the finished tank, and reduce hydrocarbon emissions.

[0034] Furthermore, the first step 301 has a first annular groove 3011 , and the first annular groove 3011 has a plurality of first through holes 3012 .

[0035] Furthermore, the first through holes 3012 are evenly distributed along the circumference of the axis of the ICV body 1 .

[0036] In this embodiment, a first annular groove 3011 is added at the first step 301, and a first through hole 3012 is further added in the first annular groove 3011, and the first through holes 3012 are evenly distributed along the axis of the ICV body 1. The advantage is that when the ICV body is tightly abutted against the side wall of the fuel tank, the air between the ICV body 1 and the side wall of the fuel tank can be smoothly discharged along the first through hole 3012. In this way, the problem of an air chamber between the ICV body and the side wall of the fuel tank after welding is successfully avoided. This sophisticated design not only improves the welding quality, but also reduces potential fault hazards.

[0037] Furthermore, the cross section of the annular protrusion 201 is triangular.

[0038] In this embodiment, the design advantage of the triangular cross-section of the annular protrusion 201 is that after the ICV body 1 is welded, the ICV body 1 can withstand greater axial force. For example, in some high-load working environments, this structure can effectively resist strong axial pressure, ensure the reliability and durability of the connection of the ICV body 1, and greatly improve the sealing performance of the ICV body 1, which can prevent fuel spillage in the finished fuel tank and reduce hydrocarbon emissions.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An ICV connection structure, used to fix an ICV body (1) in a heated reserved hole on the inner wall of a fuel tank, characterized in that: The ICV body (1) comprises a plug-in portion (2) and an abutting portion (3); the plug-in portion (2) has a plurality of annular protrusions (201) at one end close to the abutting portion (3); the annular protrusions (201) abut against the inner wall of the reserved hole; the abutting portion (3) has a first step (301) and a second step (302) at one side close to the plug-in portion (2); the first step (301) and the second step (302) both abut against the inner wall of the oil tank.

2. An ICV connection structure according to claim 1, characterized in that: The abutting portion (3) also has a plurality of first protrusions (303).

3. An ICV connection structure according to claim 2, characterized in that: The first protrusions (303) are evenly distributed along the circumference of the axis of the ICV body (1).

4. An ICV connection structure according to claim 1, characterized in that: The side wall of the first step (301) and the abutment portion (3) have a first angle, and the first angle is α.

5. An ICV connection structure according to claim 4, characterized in that: The side wall of the second step (302) and the abutment portion (3) have a second angle, and the second angle is β.

6. An ICV connection structure according to claim 5, characterized in that: The first angle and the second angle are both smaller than 90°.

7. An ICV connection structure according to claim 1, characterized in that: The first step (301) has a first annular groove (3011), and the first annular groove (3011) has a plurality of first through holes (3012).

8. An ICV connection structure according to claim 7, characterized in that: The first through holes (3012) are evenly distributed along the circumference of the axis of the ICV body (1).

9. An ICV connection structure according to claim 1, characterized in that: The cross section of the annular protrusion (201) is triangular.

Images