A multifunctional fuel tank cap locking device

Abstract

This utility model discloses a multifunctional fuel tank cap locking device, belonging to the technical field of motorcycle accessories. It includes a fuel tank cap plate, a base, a lock cylinder, and a locking head. It also includes a decorative cover rotatably covering the outside of the fuel tank cap plate, a ball-type positioning screw for positioning the decorative cover, and an opening / closing rotating head linked to the lock cylinder. Rotating the decorative cover exposes or conceals the lock cylinder, and rotating the lock cylinder drives the opening / closing rotating head to drive the locking head, achieving locking or unlocking with the base. Waterproof sealing rings, sealing ring one, and sealing ring two are also provided on the outside of the lock cylinder and inside the base. This utility model achieves concealment and protection of the lock cylinder through the rotatable decorative cover, solving the problems of easy corrosion and unsightly appearance of the lock cylinder in existing technologies. The multiple sealing structures effectively prevent water intrusion and oil / gas leakage. The overall structure provides reliable locking, improving durability and safety.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle parts technology, and in particular to a multi-functional fuel tank cap locking device. Background Technology

[0002] The motorcycle fuel tank cap is a component used to seal the fuel filler neck, and its locking mechanism is crucial for preventing fuel theft and ensuring driving safety.

[0003] Current Bluetooth-enabled motorcycles eliminate the need for a traditional fuel tank cap key, improving starting convenience but also resulting in the lack of a locking function. This makes the fuel tank vulnerable to external interference when the vehicle is parked, posing safety hazards such as fuel theft and foreign objects entering the tank. Furthermore, the lack of a dedicated locking structure reduces the safety and reliability of the fuel tank. Currently, there are various motorcycle fuel tank cap locking methods on the market. One common design uses a mechanical key lock. In this design, the lock cylinder is usually directly mounted on the outer surface of the fuel tank cap. The user needs to insert a key into the lock cylinder and rotate it to move the internal latch, thus locking or unlocking the fuel tank cap. However, this structure, with the lock cylinder directly exposed, has significant technical flaws. The lock cylinder is constantly exposed to the external environment and inevitably suffers from corrosion from rainwater, car wash water, and mud splashed from the road. Moisture and impurities can easily enter the lock cylinder, causing rust and jamming, shortening the lifespan of the locking device, and even preventing it from opening or locking properly in critical situations.

[0004] Furthermore, the exposed lock cylinder also detracts from the overall aesthetics of the fuel tank cap and even the side of the motorcycle. As the modern motorcycle industry increasingly demands integrated and streamlined exterior designs, this abrupt mechanical lock hole appears unattractive and fails to meet higher functional requirements.

[0005] Therefore, this utility model proposes a multi-functional fuel tank cap locking device to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems in the existing technology, where the lock cylinder of a multi-functional fuel tank cap locking device is directly exposed to the external environment, making it susceptible to corrosion and jamming due to rainwater and impurities, and affecting the overall appearance of the vehicle body, this utility model aims to provide a multi-functional fuel tank cap locking device with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a multifunctional fuel tank cap locking device, including a fuel tank cap plate, a base, a lock cylinder, a lock head, a sealing end cap, and two fixing screws; the device also includes a decorative cover, a ball-bearing positioning screw, and an opening and closing rotating head.

[0008] The fuel tank cover is detachably fitted onto the opening of the base. The sealing end cap is fixedly connected to the fuel tank cover by two fixing screws, forming a cavity together with the fuel tank cover to accommodate the internal locking mechanism.

[0009] The innovative structure of the device lies in the fact that the decorative cover is rotatably connected to the outside of the fuel tank cover plate, used to conceal or expose the lock cylinder located inside the fuel tank cover plate. A ball-operated positioning screw is installed on the fuel tank cover plate and elastically abuts against the inner wall of the decorative cover, used to position the decorative cover in the concealed or exposed position, ensuring its stability. An opening / closing rotating head is fixedly connected to the inner end of the lock cylinder, and abuts against and drives the locking head located inside the fuel tank cover plate to move. The locking head is used to engage or disengage with the base, thereby realizing the locking and unlocking functions of the entire device.

[0010] Preferably, the lock cylinder is fixed inside the oil tank cover plate by a fixing screw passing through the mounting hole of the oil tank cover plate. This fixing method ensures the stability of the lock cylinder installation, and the fixing screw is located within the concealment range of the decorative cover, and is completely hidden when the decorative cover is closed, ensuring the neatness and uniformity of the product appearance.

[0011] Preferably, the device further includes a positioning pin, which passes through the guide hole of the locking head and is slidably connected to the sealing end cap. The positioning pin provides precise guidance for the telescopic movement of the locking head, restricting its sliding along the axial direction of the positioning pin, thereby preventing the locking head from deflecting or jamming during reciprocating motion and improving the smoothness and reliability of the operation.

[0012] In a further preferred embodiment, the device also includes a return spring, which is sleeved on the outside of the positioning pin. The two ends of the return spring abut against the locking head and the sealing end cap, respectively, providing a continuous restoring force to the locking head and ensuring that the locking head can automatically and reliably return to the extended locked position after the unlocking operation.

[0013] Preferably, to achieve comprehensive protection, a waterproof sealing ring is provided around the outer periphery of the lock cylinder. The waterproof sealing ring surrounds the lock cylinder and elastically abuts against the inner wall of the mounting hole of the fuel tank cover plate, forming an effective waterproof barrier that prevents rainwater or car wash water from seeping into the device through the lock cylinder mounting gaps, protecting the internal precision components from moisture corrosion.

[0014] Preferably, to achieve reliable oil-gas sealing, a sealing ring 1 is circumferentially arranged inside the base. When the fuel tank cover is locked to the base, the sealing ring 1 is pressed tightly against the bottom surface of the fuel tank cover, forming the first seal. As a more preferred solution, a second sealing ring 2 is also circumferentially arranged inside the base. The second sealing ring 2 is located below or inside the first sealing ring, and together with the first sealing ring, they form a double sealing structure, which greatly improves the ability to prevent fuel vapor from leaking out of the fuel tank and enhances the safety of use.

[0015] As a specific method of locking and unlocking, the protruding end of the lock head is used to engage with the locking groove of the base to achieve locking. When unlocking, the lock cylinder is turned by the key, and the lock cylinder rotates counterclockwise to drive the opening and closing rotating head. The opening and closing rotating head then drives the lock head to retract inward against the elastic force of the return spring, so that it disengages from the locking groove of the base, thereby completing the unlocking action.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model solves the problem in the prior art where the oil tank cover lock cylinder is exposed and easily corroded by rainwater and mud, affecting the appearance and service life, by setting a rotatable decorative cover and using a ball-bearing positioning screw to position the decorative cover. It achieves the technical effect of hiding the lock cylinder, waterproofing and dustproofing, and improving the appearance.

[0018] 2. This utility model solves the problems of unreliable reset or inaccurate setting of the locking structure in the prior art by setting the lock cylinder to drive the opening and closing rotating head, which in turn drives the lock head to move, and works with the return spring and positioning pin to reset and limit the lock head. It achieves the technical effect of reliable locking, convenient unlocking and accurate reset.

[0019] 3. This utility model solves the problems of poor waterproofing of the lock cylinder and poor sealing between the fuel tank cap and the base, which easily leads to fuel vapor leakage, by setting a waterproof sealing ring on the outside of the lock cylinder and setting a sealing ring one and a sealing ring two inside the base. It achieves multiple sealing effects of preventing internal oil and gas leakage and external waterproofing, thus improving safety. Attached Figure Description

[0020] Figure 1 This is a front perspective view of a multifunctional fuel tank cap locking device proposed in this utility model;

[0021] Figure 2 This is a partial structural exploded view of a multifunctional fuel tank cap locking device proposed in this utility model;

[0022] Figure 3 This is a partial structural diagram of a multifunctional fuel tank cap locking device proposed in this utility model;

[0023] Figure 4 This is a partial structural diagram of a multifunctional fuel tank cap locking device proposed in this utility model;

[0024] Figure 5 This is a partial structural diagram of a multifunctional fuel tank cap locking device proposed in this utility model.

[0025] Legend:

[0026] 1. Decorative cover; 2. Waterproof sealing ring; 3. Ball-operated positioning screw; 4. Oil tank cover plate; 5. Lock cylinder; 6. Opening and closing rotating head; 7. Locking head; 8. Returning tension spring; 9. Fixing screw one; 10. Positioning pin; 11. Sealing end cover; 12. Fixing screw two; 13. Sealing ring one; 14. Base; 15. Sealing ring two. Detailed Implementation

[0027] Example:

[0028] Please refer to Figures 1 to 5 This utility model embodiment provides a multifunctional fuel tank cap locking device including a fuel tank cap 4, which is detachably fitted onto the opening of a base 14. A lock cylinder 5 is rotatably installed inside the fuel tank cap 4, and a locking head 7 is slidably provided inside the fuel tank cap 4. The locking head 7 is used to engage or disengage with the base 14. A sealing end cap 11 closes the inner opening of the fuel tank cap 4 and is fixedly connected to the fuel tank cap 4 by a fixing screw 12. The device also includes a decorative cover 1, which is rotatably connected to the outer side of the fuel tank cap 4. The decorative cover 1 is used to cover or expose the lock cylinder 5. A ball-positioning screw 3 is installed on the fuel tank cap 4 and elastically abuts against the inner wall of the decorative cover 1. The ball-positioning screw 3 is used to position the decorative cover 1 in the covered or exposed position. An opening and closing rotating head 6 is fixedly connected to the inner end of the lock cylinder 5 and abuts against and drives the locking head 7 to move.

[0029] Please refer to Figure 2 , Figure 3 and Figure 4 The positioning pin 10 has a slender cylindrical structure. The positioning pin 10 passes through the guide hole of the locking head 7 and is slidably connected to the sealing end cover 11. Specifically, the sealing end cover 11 has two parallel guide grooves. The two ends of the positioning pin 10 are respectively inserted into the two guide grooves of the sealing end cover 11. The positioning pin 10 slides in the guide grooves to limit the sliding of the locking head 7 along the axial direction of the positioning pin 10, thereby ensuring the stability and directionality of the locking head 7 during the extension and retraction process.

[0030] Meanwhile, the locking head 7 has a guide hole that matches the shape of the positioning pin 10. In the assembled state, the main body of the positioning pin 10 passes through the guide hole of the locking head 7. This pin-hole mating structure ensures that the locking head 7 moves precisely along a specific straight path within the fuel tank cover 4, effectively preventing it from deflecting or getting stuck.

[0031] Regarding the setting of the return spring 8, in this embodiment, the return spring 8 is sleeved on the outside of the positioning pin 10, and the two ends of the return spring 8 abut against the lock head 7 and the sealing end cover 11 respectively. It is used to provide an outwardly extending reset force after the lock cylinder 5 unlocking operation is completed, driving the lock head 7 to automatically return to the locked state.

[0032] In a preferred embodiment, in order to reliably fix the lock cylinder 5, the lock cylinder 5 is fixed inside the oil tank cover plate 4 by a fixing screw 9 passing through the mounting through hole of the oil tank cover plate 4, and the fixing screw 9 is located within the obstruction range of the decorative cover 1.

[0033] In another preferred embodiment, in order to limit the movement path of the locking head 7, the device further includes a positioning pin 10, which passes through the guide hole of the locking head 7 and is slidably connected to the sealing end cap 11 to limit the axial sliding of the locking head 7 along the positioning pin 10.

[0034] As another preferred embodiment, in order to enable the locking head 7 to automatically reset, the device also includes a return spring 8, which is sleeved on the outside of the positioning pin 10. The two ends of the return spring 8 abut against the locking head 7 and the sealing end cap 11 respectively, and are used to drive the locking head 7 to reset.

[0035] As another preferred embodiment, a waterproof sealing ring 2 is provided on the outer periphery of the lock cylinder 5. The waterproof sealing ring 2 surrounds the lock cylinder 5 and elastically abuts against the inner wall of the mounting hole of the oil tank cover plate 4 to prevent water from entering the interior of the lock cylinder 5.

[0036] As another preferred embodiment, in order to prevent oil and gas leakage, a sealing ring 13 is provided in a ring around the inner circumference of the base 14. When the oil tank cover plate 4 is locked, the sealing ring 13 is pressed tightly against the bottom surface of the oil tank cover plate 4.

[0037] As another preferred embodiment, in order to enhance the sealing effect, a second sealing ring 15 is also provided in the base 14 along its inner circumference. The second sealing ring 15 is located below or inside the first sealing ring 13 and is used to provide a second seal when the oil tank cover 4 is locked.

[0038] As a specific implementation of the locking structure, the protruding end of the locking head 7 is used to engage with the locking groove of the base 14. When the lock cylinder 5 rotates counterclockwise, the lock cylinder 5 drives the opening and closing rotating head 6, and the opening and closing rotating head 6 drives the locking head 7 to retract inward against the elastic force of the return spring 8 to achieve unlocking.

[0039] Working principle: Rotating the decorative cover 1 exposes the lock cylinder 5 inside the fuel tank cover 4. Rotating the decorative cover 1 again allows the ball-operated positioning screw 3 to engage, preventing the lock cylinder 5 from being exposed. The waterproof sealing ring 2 on the outside of the lock cylinder 5 prevents water from entering. With the lock cylinder 5 exposed, it is secured by the fixing screw 9. Using the original car key, turning the lock cylinder 5 causes it to rotate counter-clockwise, driving the opening / closing rotating head 6, which in turn causes the locking head 7 to retract from the base 14. The reverse operation... The fuel tank cover 4 can be relocked to the base 14. The locking head 7 is connected to the sealing end cover 11 through the positioning pin 10, which can limit the movement range of the locking head 7. The fixing screw 12 on the sealing end cover 11 is connected to the fuel tank cover 4, so that the components between the fuel tank cover 4 and the sealing end cover 11 form a whole. The positioning pin 10 is also connected to the return spring 8, which can make the locking head 7 reset. The base 14 is also provided with a sealing ring 13 and a sealing ring 15, which can prevent the internal oil from seeping out when locked.

Claims

1. A multi-functional fuel tank cap locking device, comprising: Fuel tank cover (4), base (14), the fuel tank cover (4) is detachably fitted onto the opening of the base (14); The device is characterized by comprising: a lock cylinder (5), which is rotatably installed inside the fuel tank cover plate (4); a lock head (7), which is slidably disposed inside the fuel tank cover plate (4) and is used to engage or disengage with the base (14); a sealing end cap (11), which closes the inner opening of the fuel tank cover plate (4) and is fixedly connected to the fuel tank cover plate (4) by a fixing screw (12); and a decorative cover (1), which is rotatably connected to the outer side of the fuel tank cover plate (4) and is used to cover or expose the lock cylinder (5). The ball-bearing positioning screw (3) is installed on the oil tank cover plate (4) and elastically abuts against the inner wall of the decorative cover (1) to position the decorative cover (1) in a covered or exposed position. The opening and closing rotating head (6) is fixedly connected to the inner end of the lock cylinder (5). The opening and closing rotating head (6) abuts against and drives the lock head (7) to move.

2. The multifunctional fuel tank cap locking device according to claim 1, characterized in that, The lock cylinder (5) is fixed inside the oil tank cover plate (4) by a fixing screw (9) passing through the mounting hole of the oil tank cover plate (4). The fixing screw (9) is located within the obstruction range of the decorative cover (1).

3. The multifunctional fuel tank cap locking device according to claim 1, characterized in that, The device also includes a positioning pin (10), which passes through the guide hole of the locking head (7) and is slidably connected to the sealing end cap (11) to restrict the locking head (7) from sliding along the axial direction of the positioning pin (10).

4. A multifunctional fuel tank cap locking device according to claim 3, characterized in that, The device also includes a return spring (8), which is sleeved on the outside of the positioning pin (10). The two ends of the return spring (8) abut against the locking head (7) and the sealing end cap (11) respectively, and are used to drive the locking head (7) to reset.

5. A multifunctional fuel tank cap locking device according to claim 1, characterized in that, A waterproof sealing ring (2) is provided on the outer periphery of the lock cylinder (5). The waterproof sealing ring (2) surrounds the lock cylinder (5) and elastically abuts against the inner wall of the mounting hole of the oil tank cover plate (4) to prevent water from entering the interior of the lock cylinder (5).

6. A multifunctional fuel tank cap locking device according to claim 1, characterized in that, A sealing ring (13) is provided in a ring along the inner circumference of the base (14). When the oil tank cover (4) is locked, the sealing ring (13) is pressed tightly against the bottom surface of the oil tank cover (4).

7. A multifunctional fuel tank cap locking device according to claim 6, characterized in that, A second sealing ring (15) is also provided in the base (14) along its inner circumference. The second sealing ring (15) is located below or inside the first sealing ring (13) and is used to provide a second seal when the oil tank cover (4) is locked.

8. A multifunctional fuel tank cap locking device according to claim 4, characterized in that, The protruding end of the locking head (7) is used to engage with the locking groove of the base (14). The lock cylinder (5) rotates counterclockwise to drive the opening and closing rotating head (6). The opening and closing rotating head (6) drives the locking head (7) to retract against the elastic force of the return spring (8).

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