Lighter convenient to inject oil

Abstract

A lighter convenient to inject oil relates to the technical field of ignition and comprises a lighter main body, a lighter cover and a lighter cover, the oil filling hole is formed in the bottom of the lighter main body and is communicated with the fuel oil cavity; the rubber plug capable of being opened is used for sealing the oil injection hole, a receding space penetrating along the horizontal plane is formed in any side of the bottom of the oil injection hole, the edge of the rubber plug is matched with the receding space to form a gap used for opening the rubber plug, a receding space is formed in any side of the bottom of the oil injection hole, and the edge of the rubber plug is matched with the receding space to form a gap used for opening the rubber plug. The edge of the rubber plug is matched with the receding space to form a gap used for opening the rubber plug, and when the rubber plug is arranged in the oil filling hole, the bottom face of the rubber plug is flush with the bottom face of the lighter body. The clearance formed between the receding space at the bottom of the oil filling hole and the edge of the rubber plug provides a clear force application point for a user, the rubber plug can be easily pried open, and operation is safe and convenient.

Description

Technical Field

[0001] This utility model relates to the field of ignition technology, specifically to a lighter that is easy to refill with oil. Background Technology

[0002] As a common fire-starting tool, the reliability, convenience, and sealing of the fuel filling structure of a lighter are key factors affecting user experience and product safety.

[0003] Currently, most refillable lighters on the market (such as the classic kerosene-filled type) use a metal filling screw as the seal for the fuel chamber. The mechanical tightening force of the thread, combined with a fiber or rubber gasket, generates a strong and durable sealing pressure. The advantage of this structure is its extremely reliable sealing performance, effectively preventing fuel (usually highly volatile and fluid kerosene) leakage during daily handling, shaking, or temperature changes, thus ensuring safety and extending the product's lifespan. However, this solution also has significant drawbacks: when refilling fuel, users need additional tools (such as coins or special screwdrivers) to unscrew and tighten the screw, making the process cumbersome and inconvenient; furthermore, the tiny filling screw can be accidentally lost, rendering the entire lighter unusable. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a lighter that is easy to refill with oil.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A refillable lighter, comprising:

[0007] The lighter body has a fuel chamber inside;

[0008] The oil filling hole is located at the bottom of the lighter body and communicates with the fuel chamber;

[0009] An openable rubber stopper is used to seal the oil filling hole.

[0010] The bottom of the oil filling hole is provided with a clearance space on either side. The edge of the rubber plug cooperates with the clearance space to form a gap for opening the rubber plug. When the rubber plug is placed in the oil filling hole, the bottom surface of the rubber plug is flush with the bottom surface of the lighter body.

[0011] The edge of the rubber stopper extends outward to form an operating section for manual operation.

[0012] The clearance space extends horizontally through one side of the bottom of the lighter body. The shape of the operating part is adapted to the clearance space, and the edge of the operating part is flush with the bottom edge of the lighter body.

[0013] A sealing structure is provided between the rubber stopper and the oil injection hole.

[0014] The sealing structure includes a raised sealing rib formed on the outer wall of the rubber stopper, and the raised sealing rib is interference-fitted with the inner wall of the oil injection hole.

[0015] The inner wall of the oil injection hole is provided with a conical surface in the circumferential direction.

[0016] The upper end of the fuel chamber is provided with an ignition port containing a cotton wick, and the cotton wick is partially immersed in the interior of the fuel chamber.

[0017] An ignition assembly for igniting the cotton wick is provided on either side of the ignition port.

[0018] The ignition assembly consists of an arc generating end and a control circuit board located inside the lighter body for controlling the generation of an arc at the arc generating end.

[0019] The beneficial effects of this utility model are: the clearance space at the bottom of the oil filling hole and the gap formed by the edge of the rubber stopper provide the user with a clear point of force application, making it easy to pry open the rubber stopper, and the operation is safe and convenient. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a cross-sectional schematic diagram of the present invention (when the head cover is open).

[0022] Figure 3 This is a cross-sectional schematic diagram of the present invention (when the head cover is closed).

[0023] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0024] Figure 5 This is a schematic diagram showing the separation of the rubber stopper from the oil filling hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses a lighter that is easy to refill, mainly including a lighter body 100, a fuel chamber 200, a fuel filling hole 210, a rubber stopper 300, an ignition port 400, and an electronic ignition device. The lighter body includes a shell and an openable cover.

[0027] The lighter body 100 is typically made of impact-resistant plastic or metal, and has an internal fuel chamber 200 for containing liquid fuel (such as kerosene). The fuel chamber 200 can be a single module, directly molded into the shell of the lighter body 100, or it can be a separate structure. A circular fuel filling hole 210 is provided at the bottom of the lighter body 100 (e.g., ...). Figure 4 As shown in the figure, the oil injection hole is directly connected to the fuel chamber 200, which facilitates the injection of kerosene under the action of gravity.

[0028] The fuel injection hole 210 is sealed by an openable rubber plug 300. The rubber plug 300 is preferably made of an oil-resistant, aging-resistant, and highly elastic material (such as silicone rubber or fluororubber). The main body of the rubber plug 300 is cylindrical, and its outer wall has at least two circumferential raised sealing ribs 320. The cross-section of the raised sealing ribs 320 is preferably circular or wedge-shaped. When the rubber plug 300 is pressed into the fuel injection hole 210, these two sealing ribs create a strong interference fit and elastic compression with the inner wall of the fuel injection hole 210, thereby forming multiple reliable sealing lines to effectively prevent fuel leakage. The inner wall of the fuel injection hole 210 can be configured as a matching conical surface. When the rubber plug 300 is pressed into the fuel injection hole 210, the raised sealing ribs 320 elastically interfere with the conical hole wall, forming a first tight radial seal, effectively preventing fuel leakage.

[0029] like Figure 5 As shown, the top of the rubber stopper 300 extends to one side to form an operating part 310 that can be operated by hand. Correspondingly, at the bottom of the lighter body 100, surrounding the oil filling hole 210, a portion of the bottom right side (or left side or any other side) of the oil filling hole 210 is cut off to form a horizontally penetrating clearance space 220. This clearance space 220 can be a rectangular notch. When the rubber stopper 300 is inserted into the oil filling hole 210, the operating part 310 is exactly located within the clearance space 220, and the outer edge of the operating part 310 is flush with the bottom edge of the lighter body 100. At this time, due to the presence of the clearance space 220, a noticeable gap 700 is formed above the operating part 310, such as... Figure 4As shown. Users can easily pry the rubber stopper 300 out of the oil filling hole 210 by simply inserting their fingernail or fingertip into this recessed space, making the operation extremely convenient. The rubber stopper 300 is precisely designed so that when fully inserted, its bottom surface is flush with the bottom surface of the lighter body 100, ensuring a flat and aesthetically pleasing bottom for the product and preventing it from snagging on clothing. This means that the rubber stopper will not be accidentally opened during carrying.

[0030] When refueling is needed, the user can use a fingernail or a thin object such as a coin to insert into the gap and press against the lower surface or side of the operating part 310, gently prying upwards or outwards to easily remove the rubber stopper 300 from the oil filling hole 210. After refueling, simply align the rubber stopper 300 with the oil filling hole 210 and press it down to restore the seal.

[0031] In this embodiment, the shape of the operating part 310 is not limited to a sheet. It can be a small cylinder, a hemispherical protrusion, or other shapes that are easy to pinch with fingers. Similarly, the shape of the clearance space 220 is adapted accordingly to ensure that there is enough room for the operating part 310 to move and to maintain a neat appearance when the rubber stopper is closed.

[0032] The upper end of the fuel chamber 200 is provided with an ignition port 400 containing a cotton wick, the cotton wick being partially immersed in the interior of the fuel chamber 200. A cotton wick (not shown in the figure) extends from the ignition port 400 and is partially immersed in the fuel in the fuel chamber 200, drawing the fuel to the ignition port through capillary action.

[0033] An ignition assembly for igniting the cotton wick is provided on either side of the ignition port 400.

[0034] The ignition assembly includes a control circuit board 500 and a battery built into the lighter body 100, as well as an arc generating terminal 600 connected to the circuit. The two discharge electrode tips of the arc generating terminal 600 are located near the ignition port 400. When the user presses the switch connected to the control circuit board 500, the circuit is triggered, generating a high-voltage arc between the electrodes, thereby igniting the wick and completing the ignition.

[0035] For safety reasons, a safety switch is also provided on the control circuit board, and a trigger is set at the hinge of the head cover. This trigger can activate the safety switch when the head cover is opened and closed, thereby ensuring that the ignition assembly will not be accidentally triggered when the head cover is closed. Its specific structure is a conventional technical means, so it will not be described in detail.

[0036] Meanwhile, the cover is also equipped with a protective part surrounding the ignition port, which ensures that the liquid in the fuel chamber will not leak through the cotton wick when closed.

[0037] In some embodiments, the ignition assembly may also employ a grinding wheel and a flint, using the grinding wheel to rub against the flint to ignite the cotton wick.

[0038] When filling the fuel tank, the user pries out the rubber stopper 300 with their finger and injects fuel into the fuel chamber 200 through the fuel injection hole 210. After filling, the user simply pushes the rubber stopper 300 back into the fuel injection hole 210. No tools are required throughout the process, and the seal is reliable.

[0039] The embodiments should not be regarded as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A lighter that is easy to refill with oil, characterized in that: It includes: The lighter body (100) has a fuel chamber (200) inside. The oil filling hole (210) is located at the bottom of the lighter body and communicates with the fuel chamber (200); An openable rubber stopper (300) is used to seal the oil injection hole (210). The bottom of the oil filling hole (210) is provided with a clearance space (220), and the edge of the rubber plug (300) cooperates with the clearance space (220) to form a gap (700) for opening the rubber plug. When the rubber plug (300) is placed in the oil filling hole (210), the bottom surface of the rubber plug (300) is not higher than the bottom surface of the lighter body (100).

2. The lighter with convenient refilling according to claim 1, characterized in that: The edge of the rubber stopper (300) extends outward to form an operating part (310) for manual operation.

3. A lighter with convenient refilling according to claim 2, characterized in that: The clearance space extends horizontally through one side of the bottom of the lighter body. The shape of the operating part (310) is adapted to the clearance space (220), and the edge of the operating part (310) is flush with the bottom edge of the lighter body (100).

4. A lighter with convenient refilling according to claim 1, characterized in that: A sealing structure is provided between the rubber stopper (300) and the oil injection hole (210).

5. A lighter with convenient refilling according to claim 4, characterized in that: The sealing structure includes a raised sealing rib (320) formed on the outer wall of the rubber plug (300), and the raised sealing rib (320) is interference-fitted with the inner wall of the oil injection hole (210).

6. A lighter with convenient refilling according to claim 1, characterized in that: The inner wall of the oil injection hole (210) is provided with a conical surface in the circumferential direction.

7. A lighter with convenient refilling according to claim 1, characterized in that: The upper end of the fuel chamber (200) is provided with an ignition port (400) containing a cotton wick, and the cotton wick is partially immersed in the interior of the fuel chamber (200).

8. A lighter with convenient refilling according to claim 7, characterized in that: An ignition assembly for igniting the cotton wick is provided on either side of the ignition port (400).

9. A lighter with convenient refilling according to claim 8, characterized in that: The ignition assembly consists of an arc generating end (600) and a control circuit board (500) installed in the lighter body (100) for controlling the generation of an arc by the arc generating end.

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