Automobile fuel tank cap with 360-degree multi-response torque structure

Abstract

The utility model discloses an automobile fuel tank cap with a 360-degree multi-sound torque structure, which comprises an upper cap and a lower cap, an inner fluted disc is arranged on the inner side of the upper cap, a plurality of ratchets meshed with the inner fluted disc are arranged on the lower cap, and the ratchets are arranged at the end of the lower cap in an upward protruding mode. The inner teeth and the ratchets which form the inner fluted disc are respectively provided with a bevel edge and a straight edge. According to the fuel tank cap, the simple structure that the ratchets are matched with the inner fluted disc is adopted to remind an operator that the fuel tank cap is screwed tightly, a plurality of continuous sounds are made when the rotating torque reaches a certain degree to remind a user that the fuel tank cap assembly is installed in place when screwed tightly, the structure is simple, the number of components is small, and assembling is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile fuel tank caps, in particular to an automobile fuel tank cap with a 360-degree multi-torque structure. Background Art

[0002] Currently, the commonly used multi-torque structure of a fuel tank cap generates an alarm sound through a ratchet ring fixed to the upper cover, an outer pawl of a locating chuck mounted on the lower cover, and a torsion spring mounted in the pawl position of the locating chuck structure. When the fuel tank cap begins to rotate at the fuel filler pipe opening, the upper tooth profile of the ratchet ring on the upper cover aligns with the outer pawl of the lower cover. At this time, the rotation of the upper cover applies a force toward the center of the fuel tank cap on the outer pawl of the locating chuck. When this force exceeds the compression force of the locating chuck spring, the ratchet teeth of the ratchet ring on the upper cover will pass over the locating chuck pawl by one tooth, thus generating an alarm sound. However, due to the structural characteristics of the fuel tank cap upper cover, the ratchet ring on the upper cover may deform after injection molding, resulting in a large deviation in the torque value of the fuel tank cap, and the force value may exceed the limit for one rotation of the fuel tank cap. Summary of the Invention

[0003] In order to solve certain technical problems existing in the prior art, the purpose of this application is to provide a 360-degree multi-sound torque structure automobile fuel tank cap, which adopts a simple ratchet and inner gear disc structure to remind the operator that the fuel tank cap has been tightened. When the rotational torque reaches a certain level, it emits a series of continuous sounds to remind the user that the fuel tank cap assembly has been installed in place when tightening. It has a simple structure, fewer components, and is more convenient to assemble.

[0004] To solve the above existing technical problems, this application adopts the following technical solutions:

[0005] A 360-degree multi-torque structure automobile fuel tank cap includes an upper cover and a lower cover. The inner side of the upper cover is provided with an inner gear disc, and the lower cover is provided with a plurality of ratchets that engage with the inner gear disc. The ratchets are arranged at the end of the lower cover in an upward protrusion. The inner teeth constituting the inner gear disc and the ratchets each have a beveled edge and a straight edge.

[0006] Preferably, six ratchet teeth are evenly arranged on the lower cover.

[0007] Preferably, the open end of the upper cover is formed with an inner plane outer ring and an inner plane inner ring arranged in a stepped hole, and the inner gear ring is arranged in the inner plane outer ring.

[0008] Preferably, the depth of the inner gear disc is consistent with the height of the ratchet teeth.

[0009] Preferably, a guide block protruding outward is provided on the inner ring of the inner plane, and a guide groove cooperating with the guide block is provided on one side of the lower cover.

[0010] Preferably, four inwardly protruding reinforcing ribs are provided on the inner ring of the inner plane, and the four reinforcing ribs and the two guide blocks are evenly arranged on the inner ring of the inner plane.

[0011] Preferably, the bottom of the reinforcing rib is provided with an inclined guide surface, and the lower cover is installed through the guide surface and limited by the reinforcing rib.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] Six ratchets are evenly spaced in a circular pattern on the lower cover, with each ratchet spaced 60° apart. This prevents significant deviations in the fuel tank cap's torque value, which could result in exceeding the force limit for one full rotation of the cap, effectively ensuring torque stability. This fuel tank cap utilizes a simple ratchet and internal gear mechanism to alert operators that the cap is tightened. When the torque reaches a certain level, a series of beeps sound, signaling that the cap assembly is securely in place. This simple structure, fewer components, and convenient assembly make it easier to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a cross-sectional view of the combined structure of the present utility model;

[0015] Figure 2 This is a schematic diagram of the lower cover structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the upper cover structure of the utility model;

[0017] In the figure: 1. Upper cover; 2. Lower cover; 3. Inner gear disc; 4. Ratchet; 5. Bevel edge; 6. Straight edge; 7. Inner plane outer ring; 8. Inner plane inner ring; 9. Guide block; 10. Guide surface; 11. Reinforcement rib; 12. Guide groove. DETAILED DESCRIPTION

[0018] Below, the present application is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0019] In the description of this application, it should be understood that the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on this application.

[0020] The terms "first," "second," and the like in this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0021] like Figure 1 As shown, a 360-degree multi-torque structure automobile fuel tank cap includes an upper cover 1 and a lower cover 2. The inner side of the upper cover 1 is provided with an inner gear plate 3, and the lower cover 2 is provided with a plurality of ratchets 4 that engage with the inner gear plate 3. The ratchets 4 are upwardly protruding and arranged at the end of the lower cover 2. The inner teeth constituting the inner gear plate 3 and the ratchets 4 each have a beveled edge 5 and a straight edge 6.

[0022] When the upper cover 1 rotates clockwise, the internal gear disc 3 rotates simultaneously. The internal beveled edge 5 of the internal gear disc 3 moves along the beveled edge 5 of the ratchet teeth 4 of the lower cover 2. Simultaneously, the ratchet teeth 4 of the lower cover 2 deform toward the center of the circle under the pressure. When the internal beveled edge 5 of the upper cover 1 moves past the top of the ratchet teeth 4, the upper cover 1 rotates through one tooth angle. When the upper cover 1 rotates counterclockwise, the internal gear disc 3 rotates counterclockwise. The internal straight edge 6 of the internal gear disc 3 mates with the straight edge 6 of the ratchet teeth 4 of the lower cover 2, directly applying a force tangential to the outer circle of the lower cover 2. This, through the upper cover 1, directly drives the lower cover 2 to rotate counterclockwise, removing the fuel tank cap. This fuel tank cap uses a simple ratchet 4 and internal gear disc 3 structure to remind the operator that the fuel tank cap has been tightened. When the rotational torque reaches a certain level, a series of sounds are emitted to indicate that the fuel tank cap assembly is properly installed. The simple structure, fewer components, and more convenient assembly.

[0023] Further improvement is as follows: Figure 2 As shown, six ratchet teeth 4 are evenly arranged on the lower cover 2 .

[0024] The existing multi-sound structure fuel tank cap generally has an inner ratchet with four teeth and is distributed at a 180° diagonal angle. As a result, when the outer ratchet is deformed, the torque will fluctuate during the torsion process. Therefore, in order to solve this problem, six ratchets 4 are evenly installed in a circular shape on the lower cover 2, and each ratchet 4 is spaced 60° apart. As a result, even if the outer ratchet is deformed during use, the torque value of the fuel tank cap will not deviate greatly, resulting in the force value exceeding the limit when the fuel tank cap rotates one circle, thereby effectively ensuring the stability of the torque.

[0025] Further improvement is as follows: Figure 3 As shown, the open end of the upper cover 1 is formed with an inner plane outer ring 7 and an inner plane inner ring 8 arranged in a stepped hole, and the inner gear disc 3 is arranged in the inner plane outer ring 7.

[0026] By arranging the inner toothed disc 3 within the inner plane outer ring 7 of the upper cover 1 , it is possible to ensure that the teeth of the inner toothed disc 3 are evenly distributed.

[0027] A further improvement is that the depth of the inner gear disc 3 is consistent with the height of the ratchet teeth 4 .

[0028] The depth of the inner gear disc 3 is consistent with the height of the ratchet 4, which can make the overall thickness smaller. When the upper cover 1 is screwed on clockwise, the deformation distance of the ratchet 4 on the lower cover 2 caused by the inner tooth bevel 5 on the inner gear disc 3 of the upper cover 1 is also fixed, so the torque required for the bevel 5 of the inner gear disc 3 of the upper cover 1 to pass over the ratchet 4 on the lower cover 2 can be guaranteed, thereby controlling the screwing torque of the fuel tank cap.

[0029] As a further improvement, a guide block 9 protruding outward is provided on the inner plane inner ring 8 , and a guide groove 12 cooperating with the guide block 9 is provided on one side of the lower cover 2 .

[0030] Since the ratchet 4 needs to engage with the inner toothed disc 3 located in the inner plane outer ring 7 during installation, and the two are assembled in an invisible manner, it is easy for the ratchet 4 and the inner toothed disc 3 to be misaligned during installation, thereby causing crushing problems. Therefore, an outwardly protruding guide block 9 is formed on the inner plane inner ring 8, and a guide groove 12 is provided on one side of the lower cover 2 to cooperate with the guide block 9. During installation, as long as the guide groove 12 is aligned with the guide block 9, the limited installation can be achieved. During the installation process, the assembly can be observed to effectively avoid the phenomenon of misalignment. Generally, there are two guide blocks 9 and guide grooves 12 and they are symmetrically arranged, which is more convenient during installation.

[0031] A further improvement is that four inwardly protruding reinforcing ribs 11 are provided on the inner ring 8 of the inner plane, and the four reinforcing ribs 11 and the two guide blocks 9 are evenly arranged on the inner ring 8 of the inner plane; the bottom of the reinforcing rib 11 is provided with an inclined guide surface 10, and the lower cover 2 is installed through the guide surface 10 and limited by the reinforcing rib 11.

[0032] Compared with directly using 6 evenly distributed reinforcing ribs 11, this structure replaces the positions of two symmetrical reinforcing ribs 11 with guide blocks 9, so that the inner ring 8 of the inner plane has four inwardly protruding reinforcing ribs 11 and two guide blocks 9. The reinforcing ribs 11 can not only play a role in strengthening the rigidity of the side wall of the upper cover 1 to avoid the side wall of the upper cover 1 from breaking, but also limit the lower cover 2 during the installation process to avoid the problem of the ratchet 4 and the inner gear disk 3 being unable to align. The bottom of the reinforcing rib 11 is provided with an inclined guide surface 10. During the installation of the lower cover 2, the guide surface 10 can play a guiding role to avoid the phenomenon that the lower cover 2 is difficult to insert during installation.

[0033] The above-mentioned embodiments are only preferred embodiments of the present application and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and replacements made by technicians in this field based on the present application shall fall within the scope of protection required by the present application.

Claims

1. A 360-degree multi-torque structure automobile fuel tank cap, comprising an upper cover (1) and a lower cover (2), characterized in that: An inner toothed disc (3) is provided on the inner side of the upper cover (1), and a plurality of ratchets (4) meshing with the inner toothed disc (3) are provided on the lower cover (2). The ratchets (4) are provided at the end of the lower cover (2) in an upwardly protruding manner. The inner teeth constituting the inner toothed disc (3) and the ratchets (4) each have a beveled edge (5) and a straight edge (6).

2. The 360-degree multi-torque structure automobile fuel tank cap according to claim 1, characterized in that: Six ratchet teeth (4) are evenly arranged on the lower cover (2).

3. The 360-degree multi-torque structure automobile fuel tank cap according to claim 2, characterized in that: The open end of the upper cover (1) is formed with an inner plane outer ring (7) and an inner plane inner ring (8) arranged in a stepped hole, and the inner toothed disc (3) is arranged in the inner plane outer ring (7).

4. The 360-degree multi-torque structure automobile fuel tank cap according to claim 1, characterized in that: The depth of the inner toothed disc (3) is consistent with the height of the ratchet teeth (4).

5. The 360-degree multi-torque structure automobile fuel tank cap according to claim 3, characterized in that: A guide block (9) protruding outward is provided on the inner ring (8) of the inner plane, and a guide groove (12) cooperating with the guide block (9) is provided on one side of the lower cover (2).

6. The 360-degree multi-torque structure automobile fuel tank cap according to claim 5, characterized in that: Four inwardly protruding reinforcing ribs (11) are provided on the inner ring (8) of the inner plane. The four reinforcing ribs (11) and the two guide blocks (9) are evenly arranged on the inner ring (8) of the inner plane.

7. The 360-degree multi-torque structure automobile fuel tank cap according to claim 6, characterized in that: An inclined guide surface (10) is provided at the bottom of the reinforcing rib (11), and the lower cover (2) is installed via the guide surface (10) and is limited in position by the reinforcing rib (11).

Images