Built-in part connecting structure of plastic oil tank

Abstract

The utility model relates to the technical field of automobile fuel systems, in particular to a plastic fuel tank built-in part connecting structure which comprises a built-in part connecting structure body, and pocking marks are evenly arranged at the upper end of the built-in part connecting structure body at intervals. An inner side skirt edge protrusion and an outer side skirt edge protrusion are arranged at the positions, on the inner side and the outer side of the pocking mark area, of the upper end of the built-in part connecting structure body respectively, an overflow hole is formed in the position, in the inner side skirt edge protrusion, of the middle of the built-in part connecting structure body, and fixing clamping jaws are symmetrically connected to the two ends of the built-in part connecting structure body respectively. According to the plastic oil tank built-in part connecting structure, the skirt protrusions are arranged on the inner portion and the outer portion of the pocking mark area respectively, so that a sealed space is formed in the pocking mark bonding area, liquid fuel oil can be effectively prevented from entering the pocking mark bonding area of the connecting structure, and meanwhile the drawing force of the bonding area can be enhanced; and it is ensured that the parts cannot fall off in the whole life cycle after being installed.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile fuel systems, in particular to a plastic fuel tank built-in component connection structure. Background Art

[0002] As environmental protection requirements become increasingly stringent, the original external perforated and welded valve body on the plastic fuel tank can no longer meet the emission requirements of the entire vehicle. In order to reduce the emission values ​​of the fuel tank, many plastic fuel tank suppliers arrange related valve bodies and other parts inside the fuel tank. Since the material of the valve body parts is different from that of the fuel tank shell, a structural part of the same material as the fuel tank is required. This part can be connected to the fuel tank and can also effectively fix the valve body and other tank parts.

[0003] The current designs for the connection structures of plastic fuel tank internal parts on the market mainly achieve connection and fixation by welding the evenly distributed pitting structure to the inner wall of the fuel tank. At the same time, a hole is opened in the middle of the disc to facilitate the overflow of the fuel tank material when the connection structure parts are bonded to the inner wall of the fuel tank.

[0004] However, in the design of the connection structure of existing products, after the built-in connection structure is bonded to the inside of the fuel tank, the bonding pit area is prone to oil ingress or oil soaking. At the same time, long-term immersion in liquid fuel can easily cause the pits in the bonding area to separate from the inner wall of the fuel tank, thereby causing the pulling force of the bonding area to decay, the product to fall off, and affecting its use. Utility Model Content

[0005] The purpose of the utility model is to provide a plastic fuel tank internal component connection structure to solve the problem raised by the above-mentioned background technology that after the fuel tank internal component connection structure on the current market is bonded to the inside of the fuel tank, the bonding pitting area is prone to oil ingress or is in an oil-soaked state, and long-term immersion in liquid fuel is likely to cause the pitting area in the bonding area to separate from the inner wall of the fuel tank, thereby causing the pulling force of the bonding area to decay and the product to fall off.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plastic oil tank built-in component connection structure, comprising a built-in component connection structure main body, the upper end of the built-in component connection structure main body is evenly spaced with pitting, and the upper end of the built-in component connection structure main body is also provided with an inner skirt protrusion and an outer skirt protrusion on the inner and outer sides of the pitting area, respectively, an overflow hole is opened in the middle of the built-in component connection structure main body in the inner skirt protrusion, and fixed claws are symmetrically connected to the two ends of the built-in component connection structure main body.

[0007] Preferably, the outer skirt protrusion, the inner skirt protrusion and the upper end surfaces of the pits are flush.

[0008] Preferably, the outer skirt protrusion and the inner skirt protrusion are both circular ring structures, and the inner and outer side surfaces of the outer skirt protrusion and the inner skirt protrusion are both inclined.

[0009] Preferably, the pits are of a conical frustum structure, and the pits are evenly distributed on the circumference.

[0010] Preferably, the overflow hole is provided with inner ribs at even intervals in the overflow hole, and the inner ribs of the overflow hole are connected between the main body of the built-in component connection structure and the inner skirt protrusion.

[0011] Preferably, the built-in component connection structure body, the outer skirt protrusion, the inner skirt protrusion, the pits, the fixing claws and the inner ribs of the overflow hole are all integrally injection molded.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the plastic tank built-in component connection structure is provided with skirt protrusions at the inner and outer parts of the pitted area, so that the pitted bonding area forms a closed space, which can effectively prevent liquid fuel from entering the inside of the pitted bonding area of ​​the connection structure, and at the same time can enhance the pulling force of the bonding area, ensuring that the parts will not fall off during the entire life cycle after being installed. The plastic tank built-in component connection structure is provided with overflow hole inner ribs at the overflow hole, which can reinforce the inner skirt protrusion, and the overflow hole inner ribs are welded together with the overflow of the inner wall of the tank, which plays a role in enhancing the pulling force between the parts and the inner wall of the tank, making the built-in component connection structure more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the connection structure of the existing internal parts of the plastic fuel tank;

[0014] Figure 2 This is a three-dimensional structural diagram of a plastic fuel tank internal component connection structure of the utility model;

[0015] Figure 3 This is a side view of a plastic fuel tank internal component connection structure of the utility model;

[0016] Figure 4 This utility model is a plastic oil tank internal parts connection structure Figure 3 Enlarged view of point A in the middle;

[0017] Figure 5 The utility model is a schematic diagram of the connection structure of the inner rib of the overflow hole and the inner skirt protrusion of the internal component connection structure of the plastic oil tank.

[0018] In the figure: 1. The main body of the built-in component connection structure; 2. The outer skirt protrusion; 3. The inner skirt protrusion; 4. The pits; 5. The fixing claws; 6. The inner ribs of the overflow hole; 7. The overflow hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-5The utility model provides a technical solution: a plastic fuel tank built-in component connection structure, including a built-in component connection structure main body 1, the upper end of the built-in component connection structure main body 1 is evenly spaced with pits 4, the pits 4 are conical truncated cone structures, and the pits 4 are evenly distributed on the circumference. This structure makes the fixing surface of the bottom of the pits 4 and the built-in component connection structure main body 1 larger than the upper end bonding surface, ensuring the structural strength of the pits 4, and the upper end of the built-in component connection structure main body 1 is also provided with an inner skirt protrusion 3 and an outer skirt protrusion 2 on the inner and outer sides of the pit 4 area, respectively, and the outer skirt protrusion 2, the inner skirt protrusion 3 and the upper end surface of the pit 4 are flush, and this structure makes the built-in component connection structure main body 1 with the inner and outer sides of the pit 4 area respectively. When bonding the inside of the fuel tank, the ends of the outer skirt protrusion 2, the inner skirt protrusion 3 and the pitting 4 can be bonded and fixed, and the outer skirt protrusion 2 and the inner skirt protrusion 3 surround the pitting 4 area, so that the bonding area of ​​the pitting 4 forms a closed space, which effectively prevents liquid fuel from entering the bonding area of ​​the pitting 4, and prevents the pitting 4 area from entering oil or being in an oil-soaked state, thereby reducing the risk of loosening of the bonding in the pitting 4 area due to long-term fuel immersion, and avoiding the reduction of the pulling force between the inner wall of the fuel tank and the bonding structure, thereby ensuring that the parts will not fall off during the entire life cycle after being installed. The outer skirt protrusion 2 and the inner skirt protrusion 3 are both circular ring structures, and the outer skirt protrusion 2 and the inner skirt The inner and outer sides of the protrusion 3 are inclined. This structure makes the connection area between the bottom of the outer skirt protrusion 2 and the inner skirt protrusion 3 and the built-in component connection structure body 1 large, so that the outer skirt protrusion 2 and the inner skirt protrusion 3 are reliably fixed relative to the built-in component connection structure body 1, and at the same time ensures the structural strength of the outer skirt protrusion 2 and the inner skirt protrusion 3. An overflow hole 7 is opened in the middle of the built-in component connection structure body 1 in the inner skirt protrusion 3, and the overflow hole inner ribs 6 are evenly spaced in the overflow hole 7, and the overflow hole inner ribs 6 are connected between the built-in component connection structure body 1 and the inner skirt protrusion 3. This structure can stabilize the inner skirt protrusion 3 through the overflow hole inner ribs 6 When the built-in component connection structure main body 1 is welded with the overflow of the inner wall of the fuel tank through the overflow hole 7, the pulling force between the built-in component connection structure main body 1 and the inner wall of the fuel tank can also be enhanced through the inner ribs 6 of the overflow hole, so that the built-in component connection structure main body 1 can be used reliably, and the two ends of the built-in component connection structure main body 1 are symmetrically connected with fixing claws 5, and the built-in component connection structure main body 1 and the outer skirt protrusion 2, the inner skirt protrusion 3, the pits 4, the fixing claws 5 and the inner ribs 6 of the overflow hole are all integrally injection molded. This structure makes the built-in component connection structure main body 1 stable through the integral molding of the built-in component connection structure main body 1, and ensures the connection strength of the built-in component connection structure main body 1.

[0021] Working principle: When using the plastic tank built-in component connection structure, first, when the built-in component connection structure body 1 is fixed to the tank, the outer skirt protrusion 2, the inner skirt protrusion 3 and the pit 4 are bonded to the tank at the same time, and the outer skirt protrusion 2 and the inner skirt protrusion 3 make the bonding area of ​​the pit 4 relatively sealed to prevent liquid fuel from entering the pit 4 area and reducing the bonding pull-out force between the two to prevent the built-in component connection structure body 1 from falling off. At the same time, the bonding pull-out force of the built-in component connection structure body 1 is improved by the outer skirt protrusion 2 and the inner skirt protrusion 3. When the built-in component connection structure body 1 is welded to the inner wall of the tank through the overflow hole 7, the inner rib 6 of the overflow hole plays a role in enhancing the connection strength. At the same time, the inner rib 6 of the overflow hole also enhances the stability of the inner skirt protrusion 3 relative to the built-in component connection structure body 1, so that the built-in component connection structure body 1 can be used reliably. The built-in component connection structure body 1 is fixed by the fixing claw 5 to fix the valve body and other related parts, thereby completing a series of tasks.

[0022] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A plastic fuel tank internal component connection structure, comprising an internal component connection structure body (1), characterized in that: The upper end of the built-in component connection structure body (1) is evenly spaced with pits (4), and the upper end of the built-in component connection structure body (1) is also provided with inner skirt protrusions (3) and outer skirt protrusions (2) on the inner and outer sides of the pits (4) area, respectively. An overflow hole (7) is opened in the middle of the built-in component connection structure body (1) in the inner skirt protrusion (3), and fixed claws (5) are symmetrically connected to both ends of the built-in component connection structure body (1).

2. A plastic fuel tank internal component connection structure according to claim 1, characterized in that: The upper end surfaces of the outer skirt protrusion (2), the inner skirt protrusion (3) and the pitting (4) are flush.

3. A plastic fuel tank internal component connection structure according to claim 1, characterized in that: The outer skirt protrusion (2) and the inner skirt protrusion (3) are both circular ring structures, and the inner and outer side surfaces of the outer skirt protrusion (2) and the inner skirt protrusion (3) are both inclined.

4. A plastic fuel tank internal component connection structure according to claim 1, characterized in that: The pits (4) are of a conical frustum structure, and the pits (4) are evenly distributed on the circumference.

5. A plastic fuel tank internal component connection structure according to any one of claims 2 to 4, characterized in that: The overflow hole (7) is provided with overflow hole inner ribs (6) at even intervals, and the overflow hole inner ribs (6) are connected between the built-in component connection structure body (1) and the inner skirt protrusion (3).

6. A plastic fuel tank internal component connection structure according to claim 5, characterized in that: The built-in component connection structure body (1), the outer skirt protrusion (2), the inner skirt protrusion (3), the pits (4), the fixed claws (5) and the inner ribs (6) of the overflow hole are all integrally injection molded.

Images