CN204184515U - The improvement fuel tank of motor bike - Google Patents

Abstract

The utility model discloses an improved fuel tank of a motorcycle, which comprises a fuel tank body, a negative pressure diaphragm type oil switch installed at a mounting hole at the lower end of the fuel tank body, an oil level sensing device, and an alarm circuit; The top of the oil switch is also provided with a jacking pipe located in the fuel tank; the oil level sensing device includes a reed switch and a float; the reed switch constitutes a switch on the alarm circuit for controlling the on-off of the alarm circuit; The dry reed switch is installed in the top pipe, and the float is movably set on the top pipe and can rise and fall with the liquid level of the fuel tank; the float is also provided with a magnetic ring, which can move with the float and is used to control dry The reed switch is on or off. The utility model can reduce the installation holes on the fuel tank body to reduce the risk of oil leakage from the fuel tank body; moreover, it can also improve the assembly efficiency of the entire fuel tank body, and can effectively expand the oil capacity of the fuel tank body; in addition, it can also reduce false alarms .

Description

Improved fuel tank for motorcycles

technical field

The utility model relates to an improved fuel tank of a motorcycle.

Background technique

Existing fuel tanks all include a fuel tank body, an oil switch installed at the mounting hole at the lower end of the fuel tank body, and an oil level sensing device installed at the mounting hole at the upper end of the fuel tank body. In order to realize the installation of the oil switch and the oil level sensing device, it is often necessary to provide two installation holes respectively corresponding to the oil switch and the oil level sensing device on the fuel tank body, thereby increasing the risk of oil leakage from the fuel tank body. Moreover, since the assembly of the oil level sensing device on the oil tank body is cumbersome and time-consuming, the assembly efficiency of the entire oil tank is low.

Utility model content

In order to overcome the deficiencies of the prior art, the purpose of this utility model is to provide an improved fuel tank of a motorcycle, which can reduce the fuel tank by rationally setting the structure of the oil level sensing device and setting the assembly position of the oil level sensing device reasonably. reduce the risk of body oil leakage and improve the assembly efficiency of the entire fuel tank.

In order to solve the above problems, the technical scheme adopted in the utility model is as follows:

The improved fuel tank of the motorcycle includes a fuel tank body, a negative pressure diaphragm oil switch installed at the mounting hole at the lower end of the fuel tank body, an oil level sensing device, and an alarm circuit; the top of the negative pressure diaphragm oil switch is also provided with The top pipe is located in the fuel tank; the oil level sensing device includes a reed switch and a float; the reed switch is configured as a switch on the alarm circuit for controlling the on-off of the alarm circuit; the reed switch is installed on the top In the tube, the float is movably fitted on the top pipe and can rise and fall with the liquid level of the fuel tank; the float is also provided with a magnetic ring; the magnetic ring can move with the float and is used to control the reed switch to be turned on or off .

The alarm circuit also includes an alarm device and a power supply; the reed switch, the alarm device and the power supply are connected in series to form a loop.

The reed switch has a normally open elastic contact.

The magnetic ring can move up and down with the float between the upper limit position and the lower limit position; when the magnetic ring is at the lower limit position, the elastic contact of the reed switch is closed, the reed switch is turned on, and the alarm circuit is turned on; When the magnetic ring is at the upper limit position, the magnetic ring is far away from the elastic contact of the reed switch, the elastic contact of the reed switch is opened, the reed switch is disconnected, and the alarm circuit is disconnected.

A limiting structure is provided on the jacking tube, and the limiting structure is used to limit the magnetic ring to move only between an upper limit position and a lower limit position.

The position-limiting structure includes an upper float limit stop arranged on the top end of the jacking pipe, and a lower float limit stop arranged on the lower end of the jack pipe.

The jacking pipe is a copper pipe.

Compared with the prior art, the beneficial effects of the utility model are:

In the utility model, by rationally setting the structure of the oil level sensing device and installing the oil level sensing device on the negative pressure diaphragm oil switch, there is no need to provide an installation hole for installing the oil level sensing device on the oil tank body. Therefore, the installation holes on the fuel tank body can be reduced to reduce the risk of oil leakage from the fuel tank body; moreover, by rationally setting the structure of the oil level sensing device, the assembly of the oil level sensing device can be made simple and convenient, thereby improving the assembly efficiency of the entire fuel tank ; At the same time, the oil level sensing device is installed on the negative pressure diaphragm oil switch, which can make the structure more compact and effectively expand the oil capacity of the oil tank; in addition, since the oil level sensing device is installed on the negative pressure diaphragm type On the oil switch, when the motorcycle goes uphill or downhill, the inclination of the liquid level in the fuel tank is roughly the same as that of the oil level sensing device or the negative pressure diaphragm type oil switch, thereby reducing false alarms.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Figure 2 is a schematic diagram of the connection between the negative pressure diaphragm oil switch and the oil level sensing device;

Figure 3 is an exploded view of the negative pressure diaphragm oil switch and the oil level sensing device;

Among them, 1. Oil tank body; 2. Negative pressure diaphragm oil switch; 21. Jacking pipe; 22. Upper float limit stop; 23. Lower float limit stop; 32. Float; 33. Magnetic ring.

Detailed ways

In the following, the utility model will be further described in combination with the accompanying drawings and specific implementation methods, so as to understand more clearly the technical idea claimed by the utility model.

As shown in Figures 1, 2, and 3, it is an improved fuel tank for motorcycles of the present invention, including a fuel tank body 1, a negative pressure diaphragm oil switch 2 installed at the mounting hole at the lower end of the fuel tank body 1, and an oil level sensing device. , alarm circuit; the top of the negative pressure diaphragm oil switch 2 is also provided with a top pipe 21 located in the fuel tank body 1; the oil level sensing device includes a reed switch and a float 32; the reed switch is constituted as The switch on the alarm circuit is used to control the on-off of the alarm circuit; the reed switch is installed in the top pipe 21, and the float 32 is movably set on the top pipe 21 and can rise and fall with the liquid level of the fuel tank body 1; The float 32 is also provided with a magnetic ring 33; the magnetic ring 33 can move with the float 32, and is used to control the conduction or disconnection of the reed switch, and then realize the alarm circuit through the conduction or disconnection of the reed switch. on or off. Specifically, the jack pipe 21 is a copper pipe.

The reed switch has a normally open elastic contact, that is to say, the reed switch is a normally open reed switch. The magnetic ring 33 can move up and down with the float 32 between the upper limit position and the lower limit position; when the magnetic ring 33 is at the lower limit position, the magnetic ring 33 is close to the elastic contact of the reed switch, and the elastic contact of the reed switch The point is closed under the magnetic field effect of the magnetic ring 33, and the dry reed switch is turned on, so that the alarm circuit is turned on; The magnetic force of the dry reed switch is weakened, so that the elastic contact of the dry reed switch can be elastically opened, and the dry reed switch is disconnected, so that the alarm circuit is disconnected.

The top tube 21 is provided with a limiting structure, and the limiting structure is used to limit the magnetic ring 33 to only move between an upper limit position and a lower limit position. Preferably, the limiting structure includes an upper float limiting stopper 22 arranged on the top end of the jacking pipe 21 , and a lower float limiting stopper 23 arranged at the lower end of the jacking pipe 21 . The maximum moving distance of the float 32 can be limited by the upper float limit stop 22, and the float 32 can be prevented from breaking away from the top pipe 21, and the magnetic ring 33 can also be restricted from moving up to the upper limit position; 23 can limit the minimum moving distance of the float 32, and limit the downward movement of the magnetic ring 33 not to exceed the lower limit position, thereby preventing the magnetic ring 33 from moving down below the lower limit position and away from the elastic contact of the reed switch to disconnect the alarm circuit position, can prevent the phenomenon that there is little oil in the fuel tank body 1 but no alarm.

The alarm circuit also includes an alarm device and a power supply, and the reed switch, the alarm device and the power supply are connected in series to form a loop. Wherein, the alarm device may be an alarm lamp or the like.

Wherein, the negative pressure diaphragm oil switch 2 adopts the existing structure.

The working principle of the utility model is as follows: when the liquid level in the oil tank body 1 drops, the float 32 and the magnetic ring 33 can drop along with the liquid level; , the elastic contact of the reed switch is closed under the action of the magnetic field of the magnetic ring 33 to make the reed switch conduct, so that the alarm circuit is conducted and the alarm lamp works. After fuel is added to the fuel tank body 1, the liquid level in the fuel tank body 1 rises. When the magnetic ring 33 rises to the elastic contact point away from the reed switch along with the float 32, the elastic contact point of the reed switch opens to make the reed switch Disconnect, so that the alarm circuit is disconnected, and the alarm light goes out.

In the utility model, by rationally setting the structure of the oil level sensing device, and by setting the oil level sensing device on the negative pressure diaphragm oil switch 2, it is unnecessary to be provided with an installation for installing the oil level sensing device on the oil tank body 1. hole, so as to reduce the installation holes on the fuel tank body 1, so as to reduce the risk of oil leakage from the fuel tank body 1; moreover, by setting the structure of the oil level sensing device reasonably, the dry reed switch can be installed in the top pipe 21, and the magnetic ring 33 is set on the jacking pipe 21, so that the assembly of the oil level sensing device is simple and convenient, and the assembly efficiency of the entire fuel tank can be improved; in addition, since the oil level sensing device is set on the negative pressure diaphragm oil switch 2, when the motorcycle When the car goes uphill or downhill, the inclination of the liquid level in the fuel tank body 1 is roughly the same as that of the oil level sensing device or the negative pressure diaphragm type oil switch 2, thereby reducing false alarms.

The above-mentioned embodiments are only preferred embodiments of the present utility model, and cannot be used to limit the scope of protection of the present utility model. The scope of protection required by the utility model.

Claims (7)

1. The improved fuel tank of the motorcycle, including the fuel tank body, the negative pressure diaphragm type oil switch installed at the installation hole at the lower end of the fuel tank body, the oil level sensing device, and the alarm circuit; it is characterized in that: the negative pressure diaphragm type oil switch The top of the switch is also provided with a top pipe located in the fuel tank; the oil level sensing device includes a reed switch and a float; the reed switch is constituted as a switch on the alarm circuit for controlling the on-off of the alarm circuit; The dry reed switch is installed in the top pipe, and the float is movably set on the top pipe and can rise and fall with the liquid level of the fuel tank; the float is also provided with a magnetic ring; the magnetic ring can move with the float and is used to control the reed The tube is turned on or off. 2. The improved fuel tank of motorcycle according to claim 1, characterized in that: the alarm circuit also includes an alarm device and a power supply; the reed switch, the alarm device and the power supply are connected in series to form a circuit. 3. The improved fuel tank of motorcycle according to claim 1, characterized in that: said reed switch has a normally open elastic contact. 4. The improved fuel tank of motorcycle as claimed in claim 3, characterized in that: the magnetic ring can move up and down between the upper limit position and the lower limit position with the float; when the magnetic ring is at the lower limit position, dry The elastic contact of the reed switch is closed, the reed switch is turned on, and the alarm circuit is turned on; when the magnetic ring is at the upper limit position, the magnetic ring is far away from the elastic contact of the reed switch, the elastic contact of the reed switch is opened, and the reed switch disconnected, the alarm circuit is disconnected. 5. The improved fuel tank of motorcycle according to claim 4, characterized in that: said top pipe is provided with a limiting structure, which is used to limit the magnetic ring can only be between the upper limit position and the lower limit position sports. 6. The improved fuel tank of motorcycle according to claim 5, characterized in that: the position limiting structure comprises an upper float limit block arranged on the top of the jack pipe, a lower float limit stop arranged on the lower end of the jack pipe. block. 7. The improved fuel tank of motorcycle according to claim 1, characterized in that: the jacking pipe is a copper pipe.