Plastic filling pipe orifice of fuel tank
By using the S-shaped structure and flange connection design of the plastic filling pipe, the problems of heavy weight and insufficient sealing of the fuel tank filling pipe are solved, achieving lightweight, low cost and high sealing performance.
Patent Information
- Application Number
- CN202423232391.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Existing fuel tank filling ports are mostly made of metal, resulting in heavy weight, complex fixing methods, and high costs. In addition, the connection between the rubber hose and the hose clamp is unstable and prone to leakage.
It adopts a plastic filling port design, including an S-shaped filling port body, which is fixed to the fuel tank body and the vehicle frame via a flange connection. It uses a sealing ring to improve the sealing performance, replaces metal materials, and simplifies the installation process.
While achieving lightweight design and reduced costs, it also improves ease of installation and sealing performance, reducing the risk of leakage.
Smart Images
Figure CN223768428U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of fuel tank filler neck, specifically to a kind of fuel tank plastic filler neck. BACKGROUND
[0002] Vehicle or agricultural machinery fuel tank needs to use filler neck to supplement fuel sometimes, in prior art, separate filler neck is generally metal material, there are problems such as heavy weight, complex fixing mode, and high cost, and the connection position of fuel tank and filler neck is generally connected using rubber tube and throat clamp, due to overall limitation, installation is more complex, sealing stability is insufficient, and leakage risk is prone to occur. SUMMARY
[0003] The utility model provides a kind of fuel tank plastic filler neck, which aims to overcome the above-mentioned deficiencies of the prior art, effectively simplify installation, reduce cost and ensure sealing.
[0004] The technical solution of the utility model: a kind of fuel tank plastic filler neck, its structure includes plastic filler neck body, and plastic filler neck body one end is connected with oil tank body. Weight and cost can be effectively reduced.
[0005] Preferably, the plastic filler neck body is S-shaped, including integrally formed first elbow pipe part, straight pipe part and second elbow pipe part connected in sequence, first installation flange is arranged at the end of the first elbow pipe part, first sealing ring groove is arranged inside the first installation flange, first bolt hole is uniformly and spaced apart arranged on the edge circumference of the first installation flange, the filler neck of the oil tank body is provided with second installation flange matched with the shape of the first installation flange, second sealing ring groove matched with the shape of the first sealing ring groove is arranged inside the second installation flange, second bolt hole matched with the shape and position of the first bolt hole is uniformly and spaced apart arranged on the edge circumference of the second installation flange, the first installation flange and the second installation flange are fixed and installed by screws and nuts passing through the first bolt hole and the second bolt hole, and sealing rings are arranged in the first sealing ring groove and the second sealing ring groove. It is convenient to install, and the sealing effect is improved.
[0006] Preferably, a protrusion is formed on the straight pipe part, and a bolt fixing installation hole is arranged on the protrusion. The frame steel plate is fixed with the plastic filler neck body by screws passing through the connecting hole on the frame steel plate and the bolt fixing installation hole. Quick fixing with the frame is realized.
[0007] The utility model has the advantages of simple and reasonable structure, convenient installation, low cost, replacement of metal filler neck with plastic filler neck, reduction of weight, replacement of rubber tube connection with sealing ring, effective improvement of sealing performance and reduction of leakage risk. BRIEF DESCRIPTION OF DRAWINGS
[0008] Figure 1 is the installation state structure schematic diagram of the plastic filling pipe mouth of the fuel tank.
[0009] Figure 2 is the structure schematic diagram of the plastic filling pipe mouth of the fuel tank.
[0010] Figure 3 is Figure 2 the structure schematic diagram of the plastic filling pipe mouth body.
[0011] Figure 4 is Figure 3 another angle schematic diagram.
[0012] Figure 5 is Figure 2 the structure schematic diagram of the oil tank connecting portion.
[0013] In the figure, 1 is the plastic filling pipe mouth body, 11 is the first elbow pipe portion, 12 is the straight pipe portion, 121 is the protruding block, 122 is the bolt fixed mounting hole, 13 is the second elbow pipe portion, 14 is the first mounting flange, 141 is the first bolt hole, 142 is the first sealing ring groove, 2 is the oil tank body, 21 is the second mounting flange, 22 is the second bolt hole, 23 is the second sealing ring groove, and 3 is the vehicle frame steel plate. DETAILED DESCRIPTION
[0014] The utility model will be further explained in detail in combination with examples and specific implementation manners.
[0015] As Figures 1-5 shown, a plastic filling pipe mouth of a fuel tank, which comprises a plastic filling pipe mouth body 1, one end of the plastic filling pipe mouth body 1 is connected with an oil tank body 2, and the middle part of the plastic filling pipe mouth body 1 is fixed with a vehicle frame steel plate 3.
[0016] Specifically, the plastic filling pipe mouth body 1 is S-shaped and comprises a first elbow pipe portion 11, a straight pipe portion 12 and a second elbow pipe portion 13 which are integrally formed and connected in sequence, and the end of the first elbow pipe portion 11 is connected with the oil tank body 2.
[0017] The first elbow pipe portion 11 is provided with a first mounting flange 14 at the end, the inner side of the first mounting flange 14 is provided with a first sealing ring groove 142, and the edge circumference of the first mounting flange 14 is uniformly and spacedly provided with first bolt holes 141.
[0018] The filling opening of the oil tank body 2 is provided with a second mounting flange 21 which is matched in shape with the first mounting flange 14, the inner side of the second mounting flange 21 is provided with a second sealing ring groove 23 which is matched in shape with the first sealing ring groove 142, and the edge circumference of the second mounting flange 21 is uniformly and spacedly provided with second bolt holes 22 which are matched in shape and position with the first bolt holes 141.
[0019] The first mounting flange 14 and the second mounting flange 21 are fixedly mounted by screw nuts passing through the first bolt hole 141 and the second bolt hole 22, and the first sealing ring groove 142 and the second sealing ring groove 23 are provided with sealing rings.
[0020] The straight pipe part 12 is formed with a protrusion 121, the protrusion 121 is provided with a bolt fixing mounting hole 122, and the frame steel plate 3 is fixed with the plastic filling pipe body 1 by passing through the connecting hole of the frame steel plate 3 and the screw passing into the bolt fixing mounting hole 122.
[0021] According to the above structure, specifically
[0022] The connection mode is that the flange surface of the second mounting flange 21 of the oil tank body 2 is connected with the flange mounting surface of the first mounting flange 14 of the plastic filling pipe body 1 by bolting, and the sealing groove and the sealing ring therebetween can play a sealing role.
[0023] The fixing mode is that the plastic filling pipe body 1 is relatively light in weight, and the fixing mode is that the bolts are screwed into the two nuts reserved in advance on the protrusion 121 according to the frame steel plate 3 in the whole machine boundary, so that the fixing effect is achieved.
[0024] The above structure connected by the flange surface is simple and easy to operate, and can replace the connection mode of the rubber pipe and the hose clamp of the metal filling pipe.
[0025] The above-mentioned components are all prior art, and a person skilled in the art can use any model and existing design that can realize the corresponding functions.
[0026] The above-mentioned is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the art, without departing from the creative concept of the utility model, a number of deformations and improvements can be made, which all belong to the protection range of the utility model.
Claims
1. A plastic refueling nozzle for a fuel tank, characterized in that, The plastic filling pipe mouth body (1) is connected with the oil tank body (2) at one end.
2. A plastic fuel tank filler neck as defined in claim 1, wherein, The plastic filling pipe mouth body (1) is S-shaped, comprising a first elbow pipe part (11), a straight pipe part (12) and a second elbow pipe part (13) which are connected in sequence and formed integrally, the first elbow pipe part (11) is provided with a first mounting flange (14) at the end, the inner side of the first mounting flange (14) is provided with a first sealing ring groove (142), the edge of the first mounting flange (14) is uniformly and spacedly provided with a first bolt hole (141), the filling port of the oil tank body (2) is provided with a second mounting flange (21) which is matched with the shape of the first mounting flange (14), the inner side of the second mounting flange (21) is provided with a second sealing ring groove (23) which is matched with the shape of the first sealing ring groove (142), the edge of the second mounting flange (21) is uniformly and spacedly provided with a second bolt hole (22) which is matched with the shape and position of the first bolt hole (141), the first mounting flange (14) and the second mounting flange (21) are fixedly installed by screws and nuts which pass through the first bolt hole (141) and the second bolt hole (22), and the first sealing ring groove (142) and the second sealing ring groove (23) are provided with sealing rings.
3. A plastic fuel tank filler neck as defined in claim 2 wherein, The straight pipe part (12) is provided with a protrusion (121), the protrusion (121) is provided with a bolt fixing installation hole (122), and the frame steel plate (3) is fixed with the plastic filling pipe mouth body (1) by screws which pass through the connecting hole of the frame steel plate (3) and the bolt fixing installation hole (122).