360-degree rotating fuel tank cap multi-sound torque structure

Abstract

The utility model discloses an oil tank cap multi-sound torque structure capable of rotating by 360 degrees, which comprises a turntable arranged on an upper cover, a plurality of outer pawls uniformly and annularly arranged on the side wall of the turntable, a positioning chuck arranged on a lower cover, and a ratchet gear ring arranged on the positioning chuck, the ratchet wheel gear ring is arranged on the upper end face of the positioning chuck in a downwards-sunken mode, the side wall of the ratchet wheel gear ring is composed of a plurality of inner ratchets arranged in an inwards-sunken mode, the rotating disc is located in the ratchet wheel gear ring, and the end of the outer pawl is meshed with the inner ratchets on the ratchet wheel gear ring. The problem of outer pawl deformation can be solved, the torque value deviation range of the fuel tank cover is reduced, and torque reliability is guaranteed.

Description

Technical Field

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

[0002] At present, the commonly used fuel tank cap multi-torque structure is realized by a ratchet gear ring fixed on the upper cover of the fuel tank cap, an outer pawl of a positioning chuck installed on the lower cover of the fuel tank cap, and a torsion spring installed at the outer pawl position of the positioning chuck. When the fuel tank cap starts to rotate at the fuel pipe mouth, the upper tooth profile bevel of the ratchet gear ring of the upper cover fits with the tooth profile bevel of the pawl. At this time, the rotation of the upper cover will apply a force toward the center of the fuel tank cap on the outer pawl of the positioning chuck. When this force value is greater than the spring compression force of the positioning chuck, the ratchet teeth of the ratchet gear ring of the upper cover will pass over the pawl of the positioning chuck by one tooth, thereby issuing an alarm sound.

[0003] However, due to the structural characteristics of the fuel tank cap upper cover, the ratchet gear ring on the upper cover is deformed after injection molding, which will cause the torque value of the fuel tank cap to deviate greatly, resulting in the force value exceeding the limit when the fuel tank cap rotates one circle. Summary of the Invention

[0004] In order to solve certain technical problems existing in the prior art, the purpose of this application is to provide a 360-degree rotating fuel tank cover multi-torque structure, which can improve the deformation problem of the outer pawl, reduce the deviation range of the fuel tank cover torque value, and ensure the reliability of the torque.

[0005] To solve the above existing technical problems, this application adopts the following technical solutions:

[0006] A 360-degree rotating fuel tank cover multi-torque structure includes a turntable installed in the upper cover, a plurality of outer pawls evenly arranged on the side wall of the turntable, a positioning chuck installed on the lower cover, and a ratchet gear ring provided on the positioning chuck. The ratchet gear ring is recessed downwardly and provided on the upper end face of the positioning chuck. The side wall of the ratchet gear ring is composed of a plurality of inner ratchets recessed inwardly. The turntable is located in the ratchet gear ring, and the ends of the outer pawls are engaged with the inner ratchets on the ratchet gear ring.

[0007] Preferably, the outer pawl and the inner ratchet are each provided with a bevel, and the bevel on the outer pawl contacts the bevel on the inner ratchet.

[0008] Preferably, the outer pawl and the inner ratchet are each provided with a straight edge, and the straight edge on the outer pawl contacts the straight edge on the inner ratchet.

[0009] Preferably, the depth of the ratchet gear ring is consistent with the height of the outer pawl.

[0010] Preferably, four outer pawls are evenly arranged on the side wall of the turntable.

[0011] Preferably, a positioning block is provided on the turntable, and a positioning groove that fits with the positioning block is provided on the inner bottom of the upper cover, and the turntable and the upper cover are fitted and fixed together by inserting the positioning block into the positioning groove.

[0012] Preferably, the positioning groove and the positioning block are both rectangular structures, and each matching surface between the positioning block and the positioning groove adopts a straight-edge structure.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] After the position and structure of the outer pawl and the ratchet ring are adjusted, the outer pawl will no longer be affected by the deformation of the upper cover during molding and use, and the ratchet ring will not be affected by the deformation of the positioning chuck, thereby improving the deformation problem of the inner teeth of the outer pawl and the ratchet ring, making the outer pawl more precise when meshing with the inner ratchet teeth on the ratchet ring, and no force exceeding the limit will occur when the fuel tank cap rotates, effectively improving the deformation problem of the outer pawl, reducing the deviation range of the torque value of the fuel tank cap, and ensuring the reliability of the torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an exploded view of the utility model;

[0016] Figure 2 It is a combination diagram of the present utility model;

[0017] Figure 3 This is a schematic structural diagram of the upper cover in the utility model;

[0018] In the figure: 1. Positioning chuck; 2. Ratchet ring; 3. Outer pawl; 4. Turntable; 5. Positioning block; 6. Straight edge; 7. Bevel edge; 8. Inner ratchet; 9. Positioning slot; 10. Upper cover. DETAILED DESCRIPTION

[0019] 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.

[0020] 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.

[0021] 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.

[0022] like Figures 1-3 As shown, a 360-degree rotating fuel tank cover multi-torque structure includes a turntable 4 installed in the upper cover 10, a plurality of outer pawls 3 evenly arranged on the side wall of the turntable 4, a positioning chuck 1 installed on the lower cover, and a ratchet gear ring 2 provided on the positioning chuck 1, wherein the ratchet gear ring 2 is recessed downwardly and is provided on the upper end surface of the positioning chuck 1, and the side wall of the ratchet gear ring 2 is composed of a plurality of inner ratchet teeth 8 recessed inwardly, the turntable 4 is located in the ratchet gear ring 2, and the end of the outer pawl 3 is engaged with the inner ratchet teeth 8 on the ratchet gear ring 2.

[0023] The fuel tank cap adopts a simple outer pawl 3 and ratchet gear ring 2 matching structure to remind the operator that the fuel tank cap has been tightened. When the rotation torque reaches a certain level, a series of sounds are emitted to remind the user that the fuel tank cap assembly has been properly installed when tightening. Among them, the turntable 4 with the outer pawl 3 is installed in the upper cover 10. At the same time, the ratchet gear ring 2 is recessed downward and set on the upper end surface of the positioning clamp 1. During the molding process of the outer pawl 3 and the ratchet gear ring 2, the production process is simpler, and the molding and use processes are no longer affected by the deformation of the upper cover 10. The ratchet gear ring 2 is not affected by the deformation of the positioning clamp 1, which improves the deformation problem of the internal teeth, so that the outer pawl 3 and the inner ratchet teeth 8 on the ratchet gear ring 2 are more precise when meshing. When the fuel tank cap is rotated, there will no longer be an over-limit force value. This effectively improves the deformation problem of the outer pawl 3, reduces the deviation range of the fuel tank cap torque value, and ensures the reliability of the torque.

[0024] As a further improvement, the outer pawl 3 and the inner ratchet 8 are each provided with a bevel 7 , and the bevel 7 on the outer pawl 3 contacts the bevel 7 on the inner ratchet 8 .

[0025] When the upper cover 10 rotates clockwise, the turntable 4 rotates clockwise at the same time, and the beveled edge 7 of the outer pawl 3 of the turntable 4 moves along the inner ratchet 8 on the positioning chuck 1. The outer pawl 3 of the turntable 4 is deformed toward the center of the circle under the action of pressure. When the beveled edge 7 of the outer pawl 3 of the turntable 4 moves over the top of the inner ratchet 8, the upper cover 10 rotates through the angle of one tooth.

[0026] As a further improvement, a straight edge 6 is provided on each of the outer pawl 3 and the inner ratchet 8 , and the straight edge 6 on the outer pawl 3 contacts the straight edge 6 on the inner ratchet 8 .

[0027] The outer pawl 3 of the turntable 4 and the inner ratchet 8 of the positioning chuck 1 each have one side designed as a straight edge 6. When the upper cover 10 rotates counterclockwise, the turntable 4 rotates counterclockwise at the same time, and the straight edge 6 of the outer pawl 3 of the turntable 4 fits into the straight edge 6 of the inner ratchet 8 of the positioning chuck 1, directly applying a force tangential to the circle of the positioning chuck 1 to the positioning chuck 1, so that the upper cover 10 can directly drive the positioning chuck 1 to rotate counterclockwise, and at the same time drive the lower cover to rotate, and unscrew the fuel tank cap.

[0028] A further improvement is that the depth of the ratchet gear ring 2 is consistent with the height of the outer pawl 3.

[0029] The depth of the ratchet gear ring 2 is consistent with the height of the outer pawl 3. When the upper cover 10 is screwed on clockwise, the deformation distance of the outer pawl 3 of the turntable 4 caused by the bevel 7 of the inner ratchet 8 in the positioning chuck 1 is also fixed, so the torque required for the bevel 7 of the outer pawl 3 of the turntable 4 to pass over the top of the inner ratchet 8 of the positioning chuck 1 can be guaranteed, thereby controlling the screwing torque of the fuel tank cap.

[0030] A further improvement is that four outer pawls 3 are evenly provided on the side wall of the turntable 4 .

[0031] As a further improvement, a positioning block 5 is provided on the turntable 4, and a positioning groove 9 is provided on the inner bottom of the upper cover 10 to fit with the positioning block 5. The turntable 4 and the upper cover 10 are fitted and fixed by inserting the positioning block 5 into the positioning groove 9.

[0032] The turntable 4 and the upper cover 10 are fixed by assembly. The positioning block 5 on the top of the turntable 4 is fixed by wedging into the positioning groove 9 in the upper cover 10, which can make the disassembly and assembly between the turntable 4 and the upper cover 10 more convenient. It can quickly determine the installation position of the turntable 4 and facilitate the disassembly and assembly of the two. The overall structure is simpler and more convenient.

[0033] As a further improvement, both the positioning groove 9 and the positioning block 5 are rectangular structures, and each mating surface between the positioning block 5 and the positioning groove 9 adopts a straight edge 6 structure.

[0034] When the upper cover 10 rotates clockwise, the positioning groove 9 in the upper cover 10 drives the turntable 4 to move clockwise through the positioning block 5 on the top of the turntable 4; when the upper cover 10 rotates counterclockwise, the positioning groove 9 in the upper cover 10 drives the turntable 4 to move counterclockwise through the positioning block 5 on the top of the turntable 4; the rectangular positioning block 5 on the top of the turntable 4 is wedged with the rectangular positioning groove 9 in the upper cover 10 to fix it, and the various fitting surfaces of the positioning block 5 and the positioning groove 9 are all side surfaces of the straight edge 6 structure. During assembly, the installation position of the turntable 4 can be quickly determined, and the disassembly and assembly of the two can be facilitated. The overall structure is simpler and more convenient, and the torque that can be withstood after assembly is greater.

[0035] 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 rotating fuel tank cap multi-torque structure, characterized by: The invention comprises a turntable (4) installed in an upper cover (10), a plurality of outer ratchets (3) uniformly arranged on the side wall of the turntable (4), a positioning chuck (1) installed on a lower cover, and a ratchet gear ring (2) arranged on the positioning chuck (1), wherein the ratchet gear ring (2) is recessed downwardly and arranged on the upper end surface of the positioning chuck (1), and the side wall of the ratchet gear ring (2) is composed of a plurality of inner ratchet teeth (8) recessed inwardly, and the turntable (4) is located in the ratchet gear ring (2), and the end of the outer ratchet pawl (3) is engaged with the inner ratchet teeth (8) on the ratchet gear ring (2).

2. The 360-degree rotating fuel tank cap multi-torque structure according to claim 1, characterized in that: The outer pawl (3) and the inner ratchet (8) are each provided with a bevel (7), and the bevel (7) on the outer pawl (3) contacts the bevel (7) on the inner ratchet (8).

3. The 360-degree rotating fuel tank cap multi-torque structure according to claim 2, characterized in that: A straight edge (6) is provided on each of the outer pawl (3) and the inner ratchet (8), and the straight edge (6) on the outer pawl (3) contacts the straight edge (6) on the inner ratchet (8).

4. The 360-degree rotating fuel tank cap multi-torque structure according to claim 1, characterized in that: The depth of the ratchet gear ring (2) is consistent with the height of the outer pawl (3).

5. The 360-degree rotating fuel tank cap multi-torque structure according to claim 1, characterized in that: Four outer pawls (3) are evenly arranged on the side wall of the rotating disk (4).

6. The 360-degree rotating fuel tank cap multi-torque structure according to any one of claims 1 to 5, characterized in that: The turntable (4) is provided with a positioning block (5), and the inner bottom of the upper cover (10) is provided with a positioning groove (9) that fits with the positioning block (5). The turntable (4) and the upper cover (10) are fitted and fixed together by inserting the positioning block (5) into the positioning groove (9).

7. The 360-degree rotating fuel tank cap multi-torque structure according to claim 6, characterized in that: The positioning groove (9) and the positioning block (5) are both rectangular structures, and each matching surface between the positioning block (5) and the positioning groove (9) adopts a straight edge (6) structure.

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