Automobile fuel tank door lock

Abstract

The utility model provides an automobile fuel tank door lock, which belongs to the technical field of fuel tank door locks, and comprises a fuel tank cover body and a lock cylinder arranged on the fuel tank cover body, and further comprises a mounting ring arranged on the fuel tank cover body, a rotating seat is fixed on the mounting ring, a connecting plate is fixed on the mounting ring, and the rotating seat is fixed on the connecting plate. The connecting plate is rotationally connected with the rotating seat through a rotating rod, a sealing assembly matched with the mounting ring is arranged on the mounting ring, and the sealing assembly is used for enhancing the sealing performance of the oil tank cover body and the mounting ring; the sealing assembly is arranged to enhance the sealing performance of the fuel tank cover body, pressure is applied to ensure that the fuel tank cover body is tightly attached to the mounting ring, dust and other impurities are prevented from entering the fuel tank due to aging of the sealing ring, and therefore fuel protection is improved.

Description

Technical Field

[0001] This utility model relates to the field of fuel tank door lock technology, and in particular to a car fuel tank door lock. Background Technology

[0002] A car fuel tank door lock is designed to prevent unauthorized personnel from opening the fuel tank, thus preventing fuel theft or the addition of foreign substances, ensuring the normal operation of the vehicle's fuel system and vehicle security. It typically consists of a lock cylinder, lock body, latch, and spring. The latch is extended or retracted by inserting and rotating a key into the lock cylinder, thereby locking and unlocking the fuel tank cap.

[0003] Because the seals around the fuel tank door lock may become loose due to aging or damage, external dust and moisture can easily enter the fuel tank, contaminating the fuel and affecting the normal operation of the engine. It may also lead to increased fuel evaporation, causing safety hazards and fuel waste. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a car fuel tank door lock. By setting a sealing component to enhance the sealing performance of the fuel tank cover, pressure is applied to ensure that the fuel tank cover and the mounting ring fit tightly together, preventing dust and other impurities from entering the fuel tank due to the aging of the sealing ring, thereby improving fuel protection.

[0005] To solve the above-mentioned technical problems, this utility model solves the problem of fuel affecting fuel production due to poor sealing of the fuel tank cap through the following technical solution.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A car fuel tank door lock includes: a fuel tank cap and a lock cylinder disposed on the fuel tank cap, and further includes:

[0008] A mounting ring is provided on the fuel tank cover, a rotating seat is fixed on the mounting ring, a connecting plate is fixed on the mounting ring, and the connecting plate is rotatably connected to the rotating seat through a rotating rod. A sealing component adapted to the mounting ring is provided on the mounting ring, and the sealing component is used to enhance the sealing performance between the fuel tank cover and the mounting ring.

[0009] Preferably, the sealing assembly includes: a sealing ring fixed on the fuel tank cover, one side of the sealing ring abutting against one side of the mounting ring, at least two rods slidingly passing through the mounting ring, a transmission plate fixed on the fuel tank cover, a ring fixed on each rod, and a spring sleeved on each rod, one end of the spring fixed to the mounting ring, the other end of the spring fixed to the ring, a mounting seat fixed on the mounting ring, a rotating shaft rotatably connected to the mounting seat, a spur gear rotatably connected to the rotating shaft, a toothed plate a fixed on the rod meshing with the spur gear, a toothed plate b meshing with the spur gear, and a sealing pressure plate abutting against the fuel tank cover fixed on the toothed plate b.

[0010] Preferably, at least two guide plates are fixed on the sealing pressure plate, and a guide rod is fixed on the mounting ring, with the guide plate and the guide rod slidingly penetrating each other.

[0011] Preferably, the guide rods are located on both sides of the rod body, and the length of the rod body is the same as the length of the guide rod.

[0012] Preferably, the rod body has a threaded hole, and a screw is threaded into the threaded hole. A rubber post is fixed to the end of the screw away from the threaded hole. The rubber post abuts against the transmission plate, and the side of the rubber post closest to the transmission plate is arranged in an arc shape.

[0013] Preferably, a limiting block is fixed on the rod body, the limiting block abuts against one side of the mounting ring, and a limiting ring is fixed on the guide rod, the diameter of the limiting ring being larger than the diameter of the guide rod.

[0014] Preferably, the length of the toothed plate a is the same as the length of the toothed plate b, and the angle between the toothed plate b and the sealing pressure plate is a right angle.

[0015] Preferably, the fuel tank cover has a groove, and a protective cover plate is rotatably connected in the groove, with the lock cylinder located below the protective cover plate.

[0016] Preferably, at least two magnetic limiting plates are fixed in the groove, and the magnetic limiting plates are magnetically connected to the protective cover.

[0017] Preferably, the mounting ring has an arc-shaped groove, and the connecting plate is located inside the arc-shaped groove.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This utility model provides a car fuel tank door lock. By setting a sealing component, the sealing effect is improved on the basis of the sealing ring on the fuel tank cover. When the fuel tank cover is flipped and engaged with the mounting ring, it provides upward pressure, thereby further increasing the sealing effect between the fuel tank cover and the mounting ring. This prevents external dust and other impurities from entering the fuel tank due to the aging of the sealing ring, and provides further protection for the fuel in the fuel tank.

[0020] This utility model provides a car fuel tank door lock. By rotating the rubber column, the position of the sealing pressure plate can be changed, thus adapting to the sealing requirements of the fuel tank cap under different needs. It has the advantages of convenient adjustment and high flexibility, and the structure is simple. The height of the rubber column can be adjusted according to the softness and thickness of the sealing ring to ensure that the sealing pressure plate can accurately fit the fuel tank cap. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a bottom view of the structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the protective cover structure of this utility model;

[0025] Figure 4 for Figure 3 Enlarged schematic diagram of the structure of region A in the middle;

[0026] Figure 5 This is a schematic diagram of the fuel tank cover structure of this utility model;

[0027] Figure 6 This is a bottom view of the mounting ring structure of this utility model;

[0028] Figure 7 This is a side sectional view of the mounting ring structure of this utility model;

[0029] Figure 8 for Figure 7 Enlarged schematic diagram of the structure of region B in the middle.

[0030] Drawing number explanation: 1. Fuel tank cover; 2. Lock cylinder; 3. Mounting ring; 4. Rotating seat; 5. Connecting plate; 6. Rotating rod; 7. Sealing assembly; 71. Sealing ring; 72. Rod body; 73. Transmission plate; 74. Ring body; 75. Spring; 76. Mounting seat; 77. Rotating shaft; 78. Spur gear; 79. Toothed plate a; 710. Toothed plate b; 711. Sealing pressure plate; 8. Guide rod; 9. Guide plate; 10. Threaded hole; 11. Screw; 12. Rubber column; 13. Limiting block; 14. Limiting ring; 15. Groove; 16. Protective cover plate; 17. Magnetic limiting plate; 18. Arc groove. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings.

[0032] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0033] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0034] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0035] Example 1: Please refer to Figures 1-8A car fuel tank door lock includes: a fuel tank cover 1 and a lock cylinder 2 disposed on the fuel tank cover 1; it also includes: a mounting ring 3 disposed on the fuel tank cover 1; a rotating seat 4 fixed on the mounting ring 3; a connecting plate 5 fixed on the mounting ring 3; and the connecting plate 5 being rotatably connected to the rotating seat 4 via a rotating rod 6; a sealing component 7 adapted to the mounting ring 3 is disposed on the mounting ring 3; the sealing component 7 is used to enhance the sealing performance between the fuel tank cover 1 and the mounting ring 3; a groove 15 is provided on the fuel tank cover 1; and a protective cover plate 16 is rotatably connected in the groove 15; the lock cylinder 2 is located below the protective cover plate 16; at least two magnetic limiting plates 17 are fixed in the groove 15; and the magnetic limiting plates 17 are magnetically connected to the protective cover plate 16; by adding the protective cover plate 16, the lock cylinder 2 can be protected from external collisions and other damage, thus providing a certain degree of protection for the lock cylinder 2;

[0036] The lock cylinder 2 contains a set of pins and a spring 75. When the correct key is inserted, the teeth of the key will push up the pins, so that the arrangement of the pins matches the circumference of the lock cylinder 2, thereby allowing the lock cylinder 2 to rotate. The rotation of the lock cylinder 2 is transmitted to the bolt through the connecting mechanism such as the linkage, which drives the bolt to extend or retract. When the bolt extends, it will insert into the corresponding slot to lock the fuel tank cover 1, so as to achieve the purpose of locking the fuel tank cover 1. This is a conventional setting in the field, so it will not be described in detail here.

[0037] In addition, the mounting ring 3 is provided with several mounting holes and is used to install at the fuel filler neck of the vehicle's fuel tank. By flipping the fuel tank cover 1 and using the correct key to insert into the lock cylinder 2 to rotate it, the fuel tank cover 1 is limited.

[0038] It should be noted that the mounting ring 3 has an arc-shaped groove 18, and the connecting plate 5 is located inside the arc-shaped groove 18. The arc-shaped groove 18 can prevent friction and jamming between the fuel tank cover 1 and the mounting ring 3 when it is flipped, thus ensuring the smooth flipping of the fuel tank cover 1.

[0039] Furthermore, the sealing assembly 7 includes: a sealing ring 71 fixed on the fuel tank cover 1, one side of the sealing ring 71 abutting against one side of the mounting ring 3; at least two rods 72 slidingly passing through the mounting ring 3; a transmission plate 73 fixed on the fuel tank cover 1; a ring 74 fixed on the rod 72; a spring 75 sleeved on the rod 72; one end of the spring 75 fixed to the mounting ring 3; the other end of the spring 75 fixed to the ring 74; a mounting seat 76 fixed on the mounting ring 3; a rotating shaft 77 rotatably connected to the mounting seat 76; and a rotating shaft 77 rotatably connected to the rotating shaft 77. There is a spur gear 78, and a toothed plate a79 that meshes with the spur gear 78 is fixed on the rod body 72. A toothed plate b710 meshes with the spur gear 78, and a sealing pressure plate 711 that abuts against the oil tank cover 1 is fixed on the toothed plate b710. The length of the toothed plate a79 is the same as the length of the toothed plate b710, and the included angle between the toothed plate b710 and the sealing pressure plate 711 is set at a right angle. By ensuring that the lengths of the toothed plate a79 and the toothed plate b710 are the same, the moving distance is kept consistent during meshing transmission.

[0040] Among them, a limiting block 13 is fixed on the rod 72, the limiting block 13 abuts against one side of the mounting ring 3, and a limiting ring 14 is fixed on the guide rod 8. The diameter of the limiting ring 14 is greater than the diameter of the guide rod 8. By setting the limiting block 14, the problem of the rod 72 failing to transmit due to excessive movement can be avoided.

[0041] In addition, at least two guide plates 9 are fixed on the sealing pressure plate 711, and a guide rod 8 is fixed on the mounting ring 3. The guide plates 9 and the guide rod 8 are slidably connected. By adding the guide plates 9 and the guide rod 8, not only can the sealing pressure plate 711 be guided, but the sealing pressure plate 711 can also be moved in a relatively stable state. The guide rod 8 is located on both sides of the rod body 72, and the length of the rod body 72 is the same as the length of the guide rod 8.

[0042] It should be noted that by setting the sealing component 7, the sealing effect is improved on the basis of the sealing ring 71 on the fuel tank cover 1. When the fuel tank cover 1 is flipped and engaged with the mounting ring 3, it provides upward pressure to it, thereby further increasing the sealing effect between the fuel tank cover 1 and the mounting ring 3, preventing external dust and other impurities from entering the fuel tank due to the aging of the sealing ring 71, and providing further protection for the fuel in the fuel tank.

[0043] The principle of the sealing assembly 7 to increase the sealing performance of the fuel tank cover 1 is as follows: By flipping the fuel tank cover 1, the transmission plate 73 flips synchronously. When the fuel tank cover 1 and the mounting ring 3 are engaged, the transmission plate 73 and the rod 72 are squeezed and transmitted, causing the rod 72 to move downward under force. At this time, the spring 75 is compressed and drives the toothed plate a79 to move synchronously. The meshing transmission between the toothed plate a79 and the spur gear 78 causes the rotating shaft 77 to rotate synchronously. In conjunction with the meshing transmission between the spur gear 78 and the toothed plate b710, the sealing pressure plate 711 is driven to move upward, causing the sealing pressure plate 711 to make tight contact with the bottom of the fuel tank cover 1, further improving the sealing performance between the fuel tank cover 1 and the mounting ring 3.

[0044] Example 2: Based on Example 1, according to Figure 4 and Figure 7 As shown, it is worth noting that the rod body 72 has a threaded hole 10, and a screw 11 is connected to the threaded hole 10. A rubber post 12 is fixed to the end of the screw 11 away from the threaded hole 10. The rubber post 12 abuts against the transmission plate 73, and the side of the rubber post 12 near the transmission plate 73 is arranged in an arc shape.

[0045] The length of the screw 11 is greater than the length of the rubber column 12, and the central axis of the screw 11 and the central axis of the rubber column 12 are collinear.

[0046] It should be noted that when the distance of the sealing pressure plate 711 moving upward needs to be adjusted, the rubber column 12 is rotated, and the screw 11 moves upward spirally by utilizing the thread transmission between the screw 11 and the threaded hole 10, thereby changing the distance of the sealing pressure plate 711 moving upward. The rubber column 12 can also be rotated downward.

[0047] It should also be noted that by rotating the rubber column 12, the position of the sealing plate 711 can be changed, thus adapting to the sealing requirements of the fuel tank cover 1 under different needs. It has the advantages of convenient adjustment and high flexibility, and the structure is simple. The height of the rubber column 12 can be adjusted according to the softness and thickness of the sealing ring 71 to ensure that the sealing plate 711 can accurately fit with the fuel tank cover 1.

[0048] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. An automotive filler door lock comprising: Fuel tank cover (1) and lock cylinder (2) provided on fuel tank cover (1); Its characteristic is that it further includes: An mounting ring (3) is provided on the fuel tank cover (1). A rotating seat (4) is fixed on the mounting ring (3). A connecting plate (5) is fixed on the mounting ring (3). The connecting plate (5) is rotatably connected to the rotating seat (4) via a rotating rod (6). A sealing component (7) adapted to the mounting ring (3) is provided on the mounting ring (3). The sealing component (7) is used to enhance the sealing performance between the fuel tank cover (1) and the mounting ring (3).

2. The door lock for a fuel tank of an automobile according to claim 1, wherein The sealing assembly (7) includes: a sealing ring (71) fixed on the oil tank cover (1), one side of the sealing ring (71) abutting against one side of the mounting ring (3), at least two rods (72) slidingly passing through the mounting ring (3), and a transmission plate (73) fixed on the oil tank cover (1), a ring (74) fixed on the rod (72), and a spring (75) sleeved on the rod (72), one end of the spring (75) being fixed to the mounting ring (3), and the other end of the spring (75) being fixed to the mounting ring (3). One end is fixed to the ring body (74), and a mounting seat (76) is fixed on the mounting ring (3). A rotating shaft (77) is rotatably connected to the mounting seat (76). A spur gear (78) is rotatably connected to the rotating shaft (77). A toothed plate a (79) that meshes with the spur gear (78) is fixed on the rod body (72). A toothed plate b (710) meshes with the spur gear (78). A sealing pressure plate (711) that abuts against the oil tank cover body (1) is fixed on the toothed plate b (710).

3. A door lock for a fuel tank of a vehicle according to claim 2, wherein At least two guide plates (9) are fixed on the sealing pressure plate (711), and a guide rod (8) is fixed on the mounting ring (3), with the guide plate (9) and the guide rod (8) slidingly penetrating each other.

4. A car fuel tank door lock according to claim 3, characterized in that, The guide rods (8) are located on both sides of the rod body (72), and the length of the rod body (72) is the same as the length of the guide rod (8).

5. The door lock of claim 2, wherein The rod body (72) has a threaded hole (10) and a screw (11) is threaded into the threaded hole (10). A rubber column (12) is fixed at one end of the screw (11) away from the threaded hole (10). The rubber column (12) abuts against the transmission plate (73) and the side of the rubber column (12) near the transmission plate (73) is arranged in an arc shape.

6. The door lock of claim 3, wherein A limiting block (13) is fixed on the rod (72), the limiting block (13) abuts against one side of the mounting ring (3), and a limiting ring (14) is fixed on the guide rod (8), the diameter of the limiting ring (14) being greater than the diameter of the guide rod (8).

7. The door lock of claim 2 wherein: The length of the toothed plate a (79) is the same as the length of the toothed plate b (710), and the toothed plate b (710) and the sealing pressure plate (711) are set at a right angle.

8. The door lock of claim 1, wherein: The oil tank cover (1) has a groove (15) and a protective cover plate (16) is rotatably connected in the groove (15). The lock cylinder (2) is located below the protective cover plate (16).

9. The door lock of claim 8, wherein: At least two magnetic limiting plates (17) are fixed in the groove (15), and the magnetic limiting plates (17) are magnetically connected to the protective cover plate (16).

10. The door lock of claim 1, wherein The mounting ring (3) has an arc groove (18), and the connecting plate (5) is located inside the arc groove (18).

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