JPH0674452U - Vehicle fuel inlet device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a fuel injection device for a vehicle having a simple structure capable of reducing the number of parts while improving the sealing property and the appearance of the penetration portion of the fuel pipe. [Structure] An outer seal 4c, an inner seal 4d, and a seal lip 4e are provided on a bottomed cylindrical elastic seal 4 that covers the outer peripheral surface of an inlet box 2 having a flange 2c at its outer end. Fuel pipe 6 fixed to the vehicle body
From the opening 5a provided in the inner panel 5 through the opening 4b provided in the bottom portion 4a of the elastic seal 4 and the opening 2b provided in the bottom portion 2a of the inlet box 2 to the fuel inlet 3
To project. The bottom portion 4a of the elastic seal 4 is fixed to the inlet box 2 by superposing the flange 2c on the peripheral surface of the opening 1a provided in the outer panel 1 via the outer seal 4c.
Is fitted and held on the periphery of the opening 2b provided on the bottom portion 2a of the fuel pipe 6, and the tip of the seal lip 4e is attached to the fuel pipe 6.
Was held closely to the outer peripheral surface of.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fuel inlet device for a vehicle, and more particularly to a fuel inlet device capable of increasing the support strength of a fuel pipe without deteriorating the appearance of the vehicle.

[0002]

[Prior art]

 2. Description of the Related Art As a conventional vehicle fuel inlet device, there is one disclosed in Japanese Utility Model Laid-Open No. 2-142319. As shown in FIG. 2, the flange C of the inlet box B and the outer flange E of the elastic seal D are tightened and fixed by the bolts F and nuts G around the opening provided in the outer panel A of the vehicle body to inject the fuel. Formed H.

Further, the inner flange I of the elastic seal D is closely held to the peripheral edge of the opening provided in the inner panel J of the vehicle body, so that the seal between the outer panel A and the inner panel J is performed. Then, a seal ring L is attached to the opening provided in the bottom portion K of the inlet box B so that the seal ring L is brought into contact with the outer peripheral surface of the fuel pipe M to position and hold the pipe M. N is a cap and O is a lid.

However, when the fuel pipe M is positioned and held by the seal ring L 1 attached to the inlet box B as described above, it is necessary to configure the seal ring L with hard rubber or the like to provide a positioning function. Therefore, the sealing action of the seal ring L becomes insufficient, and the sealability of the penetrating portion of the fuel pipe M may deteriorate. In addition, since it is difficult to integrate the elastic seal B made of a highly flexible material and the seal ring L made of hard rubber or the like, it becomes necessary to provide the seal ring L as a separate component, resulting in the number of components. There was a problem that the number increased.

[0005]

[Problems to be solved by the device]

 The present invention has been made in view of the above circumstances, and provides a fuel injection device for a vehicle having a simple structure capable of reducing the number of parts while improving the sealing property and appearance of the penetration portion of the fuel pipe. That is the issue.

[0006]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides an inlet box that forms a fuel injection port between an outer panel and an inner panel of a vehicle body, a cylindrical bottomed elastic seal that covers the outer peripheral surface of the inlet box, and a fixed to the vehicle body. There is provided a fuel pipe projecting from the opening provided in the inner panel to the fuel inlet through the opening provided in the bottom of the elastic seal and the opening provided in the bottom of the inlet box. Further, an outer seal sandwiched between a flange provided on the outer end of the inlet box and the outer panel and an inner seal fitted to an opening edge of the inner panel are provided on the elastic seal. Then, a flange is superposed and fixed to the peripheral surface of the opening provided in the outer panel via the outer seal to fit and hold the bottom portion of the elastic seal to the peripheral edge of the opening provided in the bottom portion of the inlet box, and The tip of the seal lip formed along the opening is closely held to the outer peripheral surface of the fuel pipe.

[0007]

[Action]

 Since the fuel pipe is fixed to the vehicle body and the position accuracy of the fuel pipe at the inlet box is high, there is no need to hold the fuel pipe with the seal lip. Therefore, even if the sealing property of the seal lip is increased by integrating the sealing lip with the elastic seal made of a highly flexible material having excellent sealing property, the fuel pipe mounting accuracy does not decrease. Also, since the seal lip is provided on the elastic seal, the number of parts can be reduced and the number of assembling steps can be reduced. Further, since the sealing property of the seal lip is improved and a gap is not formed between the seal lip and the fuel pipe, the appearance of the fuel inlet device is also improved.

[0008]

【Example】

 Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing an embodiment of a vehicle fuel inlet device according to the present invention, in which an outer panel 1 of a vehicle body has an opening 1a covered with a lid (not shown). An inlet box 2 made of a hard resin material is attached to the opening 1a to form a fuel injection port 3.

The outer peripheral surface of the inlet box 2 is covered with an elastic seal 4 formed in a cylindrical shape having a bottom, and is elastic from an opening 5 a provided in an inner panel 5 arranged at a predetermined interval in the outer panel 1. The tip of the fuel pipe 6 is projected into the fuel inlet 3 through the opening 4b provided in the bottom portion 4a of the seal 4 and the opening 2b provided in the bottom portion 2a of the inlet box 3. The fuel pipe 6 is made of a metal pipe and is fastened and fixed to a vehicle body panel (not shown) by a clamp 7 and bolts 7a. Further, the tip of a pipe 6a fixed to a fuel tank (not shown) and the base end of the fuel pipe 6 are connected via a flexible pipe 6b such as a rubber pipe. 6c is a cap and 6d is a clip.

An outer seal 4c is provided on the outer end of the elastic seal 4, and a flange 2c is provided on the outer end of the inlet box 2. Then, a flange 2c is superposed on the peripheral surface of the opening 1a provided in the outer panel 1 via an outer seal 4c, and the flange 2c is fastened and fixed by bolts and nuts not shown.

Further, an inner seal 4 d provided at the inner end of the elastic seal 4 is fitted into the opening 5 a of the inner panel 5 to seal between the outer panel 1 and the inner panel 5. Then, the peripheral edge of the opening 4b provided in the bottom portion 4a of the elastic seal 4 is turned back to the front side and fitted and held in the opening 2b provided in the bottom portion 2a of the inlet box 2 to open the opening 4b of the elastic seal 4. The tip of the seal lip 4e provided on the inner peripheral edge of the fuel pipe 6 is held in close contact with the outer peripheral surface of the fuel pipe 6.

In the vehicle fuel inlet device configured as described above, since the fuel pipe 6 is fixed to the vehicle body by using the clamp 7 or the like, the fuel pipe 6 and the inlet box 2 are accurately positioned. To be done. Therefore, there is no need to hold the fuel pipe 6 with the seal lip 4e, and the seal lip 4e is integrated with the elastic seal 4 having excellent sealing performance, which is made of a material having a high flexibility, so that the penetration portion of the fuel pipe 6 can be prevented. Even if the sealing performance is improved, the mounting accuracy of the fuel pipe 6 does not deteriorate.

Further, since the seal lip 4e is provided on the elastic seal 4, the number of parts can be reduced and the number of assembling steps can be reduced. Furthermore, since the sealability of the seal lip 4e is improved, a gap is not formed between the seal lip 4e and the fuel pipe 6, so that the appearance of the fuel inlet device is also improved.

In the embodiment, by providing the elastic seal 4 with the folds 4f, variations in the assembling dimensions of the outer flange 4c and the inner flange 4d due to dimensional errors of the outer panel 1 and the inner panel 5 are absorbed by expansion and contraction of the folds 4f. Although it is possible, it is not always necessary to provide the fold 4f.

[0015]

[Effect of device]

 As apparent from the above description, according to the vehicle fuel inlet device of the present invention, since the fuel pipe is fixed to the vehicle body side and the tip thereof is projected to the fuel inlet, the opening of the inlet box There is no need to attach a highly rigid seal ring to the, and a flexible seal lip with excellent sealing performance can be provided to enhance the sealing performance of the penetration part of the fuel pipe. Further, since the seal lip that performs the sealing action is provided on the elastic seal as described above, the number of parts constituting the fuel inlet device can be reduced and the manufacturing cost can be reduced. Further, as described above, since the sealability of the penetration portion of the fuel pipe is improved, no gap is formed in the penetration portion of the fuel pipe, and the appearance of the fuel supply port device is improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a vehicle fuel inlet device according to the present invention.

FIG. 2 is a cross-sectional view showing a conventional example of a fuel inlet device for a vehicle.

[Explanation of symbols] 1 outer panel 1a opening 2 inlet box 2a bottom 2b opening 2c flange 3 fuel inlet 4 elastic seal 4a bottom 4b opening 4c outer seal 4d inner seal 4e sealing lip 4f fold 5 inner panel 5a 6 opening 6a fuel pipe Flexible pipe 6c Cap 6d Clip 7 Clamp 7a Bolt

Claims (1)

[Scope of utility model registration request] 1. An inlet box forming a fuel inlet between an outer panel and an inner panel of a vehicle body, a cylindrical elastic seal with a bottom covering an outer peripheral surface of the inlet box, and the inner panel fixed to the vehicle body. A fuel pipe protruding from the provided opening to the fuel inlet through an opening provided at the bottom of the elastic seal and an opening provided at the bottom of the inlet box is provided, and between the flange provided at the outer end of the inlet box and the outer panel. An outer seal that is sandwiched and an inner seal that fits into the opening edge of the inner panel are provided in the elastic seal, and a flange is polymerized and fixed to the peripheral surface of the opening provided in the outer panel through the outer seal, and the bottom portion of the elastic seal is inserted into the inlet. Fits and holds around the periphery of the opening provided at the bottom of the box, and has an elastic seal A fuel inlet device for a vehicle, wherein a tip of a seal lip formed along the opening of the fuel pipe is held in close contact with the outer peripheral surface of the fuel pipe.