Fuel tank cap system for high-pressure fuel tanks

Abstract

The utility model discloses a kind of oil tank cover systems for high-pressure oil tank, including oil tank mouth cover and control switch, oil tank mouth cover can be driven to open oil tank oil filler or close, control switch in the process of being driven to open the oil tank mouth cover can be associated to open the isolation valve of oil tank;The utility model utilizes the action of opening oil tank mouth cover to control switch and control the opening and closing of the isolation valve of oil tank, to remove the accessory parts such as switch in vehicle, simplify oil tank cover system so that overall structure is simple, simultaneously, simplify the opening process of oil filler cap when refueling, reduce the use of parts, to reduce manufacturing cost and subsequent use and maintenance cost.

Description

Technical Field

[0001] This utility model relates to a vehicle fuel tank component, and more particularly to a fuel tank cap system for high-pressure fuel tanks. Background Technology

[0002] Fuel tanks are essential equipment for both gasoline-powered vehicles and hybrid new energy vehicles. In the field of new energy vehicles, especially plug-in hybrids, environmental requirements have led to the widespread use of high-pressure fuel tanks. When in use, a high-pressure fuel tank is isolated from the atmosphere, preventing the release of gasoline volatiles and maintaining a set high pressure within the tank, which in turn puts the entire fuel system under high pressure. To refuel, a refueling switch must be pressed inside the vehicle to open the valve separating the fuel tank from the atmosphere, releasing the pressure before the refueling cap can be opened and fuel can be added. Some vehicles, in addition to the refueling switch inside the vehicle, also have a keyhole on the external refueling cap, requiring the cap to be opened. The entire fuel tank cap system is complex, the refueling process is cumbersome, and there are many components involved, increasing manufacturing costs and subsequent maintenance costs.

[0003] Therefore, it is necessary to improve the existing high-pressure oil tank filler cap system to simplify the opening process of the filler cap during refueling, reduce the number of parts used, and thus reduce manufacturing costs and subsequent use and maintenance costs. Utility Model Content

[0004] In view of this, the present invention provides a tank cover system for high-pressure oil tanks, which has a simple structure, simplifies the process of opening the filler cap during refueling, reduces the use of parts, and thus reduces manufacturing costs and subsequent use and maintenance costs.

[0005] The present invention relates to a tank cover system for a high-pressure oil tank, comprising a tank cover and a control switch. The tank cover can be driven to open or close the oil tank filling port, and the control switch can be associated with opening the isolation valve of the oil tank during the process of the tank cover being driven to open.

[0006] Furthermore, the fuel tank cap can be driven to rotate open or close the fuel tank filling port, and the control switch can be associated with opening the fuel tank isolation valve during the process of the fuel tank cap being driven to rotate open.

[0007] Furthermore, the fuel tank cover includes a cover body with an end face cam. The control switch is a contact switch, and the contacts of the contact switch can be triggered by the end face cam during the process of the fuel tank cover being driven to rotate and open, thereby opening the isolation valve of the fuel tank.

[0008] Furthermore, the control switch is fixed to the oil filling pipe of the high-pressure oil tank, and the contact point faces the cover. The end face cam is located inside the cover and faces the contact point.

[0009] Furthermore, the fuel tank cap also includes a lock cylinder, which is installed in the center of the cap and can be driven to open or close the fuel tank filler neck.

[0010] Furthermore, the lock cylinder is an electric lock cylinder, a mechanical lock cylinder, or an electromechanical lock cylinder.

[0011] Furthermore, the control switch is fixed to the oil filling pipe of the oil tank via a switch bracket, and the control switch is detachably installed on the switch bracket.

[0012] Furthermore, the end face cam is formed by a protrusion extending radially outward along the cover body. The protrusion is a plurality of protrusions distributed in a circumferential direction, and the side of the protrusion facing the contact point is an arc surface used to form the end face cam.

[0013] Furthermore, the protrusion is integrally formed with the cover.

[0014] Furthermore, a knob handle is provided at the position corresponding to the lock cylinder on the cover, and the knob handle is provided with a lock hole for inserting a mechanical key.

[0015] The beneficial effects of this utility model are as follows: The fuel tank cover system for high-pressure fuel tanks of this utility model uses the action of opening the fuel tank cover to control the switch and control the opening and closing of the fuel tank isolation valve, thereby eliminating auxiliary parts such as in-vehicle switches, simplifying the fuel tank cover system and making the overall structure simple. At the same time, it simplifies the process of opening the fuel filler cap during refueling, reduces the use of parts, and thus reduces manufacturing costs and subsequent use and maintenance costs. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is an isometric view of the present invention;

[0018] Figure 2 This is an isometric view of the present invention from another angle. Detailed Implementation

[0019] like Figure 1-2As shown: This embodiment of the fuel tank cover system for a high-pressure fuel tank includes a fuel tank cover and a control switch 3. The fuel tank cover can be driven to open or close the fuel tank filler port. The control switch 3 can be associated with opening the fuel tank isolation valve (not shown in the figure) during the process of the fuel tank cover being driven open. The fuel tank isolation valve is a common configuration of high-pressure fuel tanks and is usually controlled by a wired or wireless switch, which will not be described in detail here. The fuel tank cover refers to the cover that opens or closes the filler port of the fuel tank filler pipe during refueling. The opening or closing process is not limited to rotation; it can also be achieved by sliding inward or outward, or a combination of sliding and rotation. During the opening process, the associated control switch simultaneously opens the isolation valve to achieve the purpose of pressure relief. The association method can adopt the existing mechanical association method, using the general mechanical transmission mode of driving the control switch by the action of opening the fuel tank cap, such as driving, pressing, etc., which will not be elaborated here. Under normal circumstances, it is necessary to drive the control switch to open the isolation valve at an appropriate time before the fuel tank cap is fully opened to release the pressure in the fuel tank. This purpose can be achieved by setting the association of the control switch during the process of the fuel tank cap being driven to open, which will not be elaborated here. Of course, the isolation valve should be closed after the fuel tank cap is opened until the next opening, which is a common design and will not be elaborated here.

[0020] In this embodiment, the fuel tank cap can be driven to rotate to open or close the fuel tank filling port, and the control switch can be associated with opening the fuel tank isolation valve during the process of the fuel tank cap being driven to rotate and open. The opening or closing by rotation is a relatively simple mechanical structure and is easy to operate. The structure of opening the isolation valve by rotating and driving the control switch through the linkage structure is easy to design and simple in structure. There are various ways to associate it, such as driving it through an intermediate component or triggering it by the opening stroke.

[0021] In this embodiment, the fuel tank cover includes a cover body 1, on which an end face cam 201 is provided. The control switch 3 is a contact switch, and the contact 301 of the contact switch can be triggered by the end face cam 2 during the process of the fuel tank cover being driven to rotate and open, thereby opening the isolation valve of the fuel tank. The end face cam refers to a cam with a protrusion in a direction perpendicular to the rotation direction. This protrusion is generally a smooth transition and is used to drive the cooperating component in a direction perpendicular to the rotation direction during circumferential movement, such as... Figure 2 As shown, the end face cam is fixed to the cover 1. When the fuel tank cover rotates, it drives the cover 1, which in turn drives the end face cam to move in the circumferential direction, thereby causing the contact 301 to move linearly and trigger the control switch 3, thus opening the isolation valve. The structure of the end face cam can be set as needed, as long as it has the driving effect of an end face cam. There can be one or more. Setting multiple cams can ensure that the fuel tank cover does not need to be positioned when closing the fuel tank opening, simplifying the use.

[0022] In this embodiment, the control switch 3 is fixed to the oil filling pipe 4 of the high-pressure oil tank, and the contact 301 faces the cover 1. The end face cam 201 is located on the inner side of the cover and faces the contact 301. The inner side of the cover refers to the side facing the oil tank, which will not be described in detail here. The end face cam 201 is generally integrally formed with the cover 1, which saves manufacturing costs and has good strength. Of course, it can also be fixedly connected, etc., which will not be described in detail here.

[0023] In this embodiment, the fuel tank cap also includes a lock cylinder (not shown in the figure). The lock cylinder is installed at the center of the cap 1 and can be driven to open or close the fuel tank filler neck. The locking and opening of the fuel tank cap at the filler neck by setting the lock cylinder is a typical mechanical locking structure, which will not be described in detail here. In use, the lock cylinder is rotated by electronic control or by inserting a mechanical key, thereby driving the fuel tank cap to rotate and open the fuel tank cap to refuel. Of course, the drive contact before opening the fuel tank cap will not be described in detail here.

[0024] In this embodiment, the lock cylinder is an electric lock cylinder, a mechanical lock cylinder, or an electromechanical lock cylinder, all of which are existing lock cylinder structures. The electric lock cylinder unlocks by electronic control (electromagnetic or motor) so that the fuel tank cover can be driven to rotate; the electromechanical lock cylinder refers to a lock that can be opened by electric or mechanical key, both of which can achieve the purpose of the utility model, and will not be described in detail here.

[0025] In this embodiment, as Figure 2 As shown, the control switch 3 is fixed to the oil filling pipe 4 of the oil tank via the switch bracket 5. In this embodiment, the switch bracket 4 is welded to the oil filling pipe 4. Of course, it can also be a conventional detachable structure. The welded structure is more stable and can ensure the sensitivity of the control switch. The control switch 3 is detachably installed on the switch bracket 5. The switch bracket 5 is usually provided with a mounting position for installing the control switch 3. For example, a mechanical clamp structure can be used. It is a conventional mechanical structure and will not be described in detail here.

[0026] In this embodiment, the end face cam 201 is formed by a protrusion extending radially outward along the cover 1. The protrusion is a plurality of protrusions distributed along the circumferential direction, and the side of the protrusion facing the contact point 301 is an arc surface for forming the end face cam. Of course, the end face cam 201 can be a structure with continuity in the circumferential direction, or it can be formed by a plurality of protrusions 2 as in this embodiment, both of which can achieve the purpose of the utility model. As shown in the figure, multiple protrusions 2 can be set in the circumferential direction as needed, but a rotation space required for the oil tank cap to be closed should be left between adjacent protrusions 2 to avoid accidental triggering of the control switch. At the same time, it should be ensured that the control switch can be triggered immediately when the rotation is opened. The interval between adjacent protrusions can be designed according to the rotation opening stroke, which will not be elaborated here.

[0027] In this embodiment, the end face cam 201 is integrally formed with the cover 1, such as... Figure 1 , 2 As shown, the end face cam 201 is directly added to the surface of the protrusion, forming it in one piece, which is convenient to manufacture.

[0028] In this embodiment, a knob handle 101 is provided at the position corresponding to the lock cylinder of the cover 1. The knob handle 101 is provided with a lock hole 1011 for inserting a mechanical key. When in use, insert the mechanical key and rotate the knob handle 101 to open the oil tank cover. During the opening process, the control switch is triggered to achieve the purpose of depressurization. It is simple and convenient to use, simplifies the refueling process, and removes more parts, saving manufacturing costs.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An oil tank cap system for a high pressure oil tank, characterized by: It includes a fuel tank cap and a control switch. The fuel tank cap can be driven to open or close the fuel tank filler neck. The control switch can be associated with opening the fuel tank isolation valve during the process of the fuel tank cap being driven to open.

2. The tank cap system for a high pressure tank of claim 1, wherein: The fuel tank cap can be driven to rotate open or close the fuel tank filling port, and the control switch can be associated with opening the fuel tank isolation valve during the process of the fuel tank cap being driven to rotate open.

3. The tank cap system for a high pressure tank of claim 2, wherein: The fuel tank opening cover includes a cover body with an end face cam. The control switch is a contact switch, and the contacts of the contact switch can be triggered by the end face cam during the process of the fuel tank opening cover being driven to rotate and open, thereby opening the isolation valve of the fuel tank.

4. The tank cap system for a high pressure tank of claim 3, wherein: The control switch is fixed to the oil filling pipe of the high-pressure oil tank, and the contact point faces the cover. The end face cam is located inside the cover and faces the contact point.

5. The tank cap system for a high pressure tank of claim 3, wherein: The fuel tank cap also includes a lock cylinder, which is installed in the center of the cap and can be driven to open or close the fuel tank filler neck.

6. The tank cap system for a high pressure tank of claim 5, wherein: The lock cylinder is an electric lock cylinder, a mechanical lock cylinder, or an electromechanical lock cylinder.

7. The tank cap system for a high pressure tank of claim 1, wherein: The control switch is fixed to the oil filling pipe of the oil tank via a switch bracket, and the control switch is detachably installed on the switch bracket.

8. The tank cap system for a high pressure tank of claim 3, wherein: The end face cam is formed by a protrusion extending radially outward along the cover body. The protrusion is a plurality of protrusions distributed in a circumferential direction, and the side of the protrusion facing the contact point is an arc surface used to form the end face cam.

9. The tank cap system for a high pressure tank of claim 3, wherein: The end face cam is integrally formed with the cover.

10. The tank cap system for a high pressure tank of claim 5, wherein: A knob handle is provided at the position corresponding to the lock cylinder on the cover, and the knob handle has a key hole for inserting a mechanical key.

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