Cover-free closure assembly for fuel tank filler

Abstract

The utility model relates to the technical field of fuel tank sealing, in particular to a cover-free sealing assembly for a fuel tank oil filling port, which comprises a sealing block, a first moving block and a second moving block, the sealing block is provided with a first oil filling groove, a first moving groove and a second moving groove, and the first moving groove and the second moving groove are communicated with the first oil filling groove. The first moving block is arranged in the first moving groove in a sliding mode, the first moving block is provided with a second oil filling groove capable of being communicated with the first oil filling groove, the second moving block is arranged in the second moving groove in a sliding mode, and the second moving block is provided with a third oil filling groove capable of being communicated with the first oil filling groove. A transmission assembly used for moving the second moving block is arranged between the first moving block and the second moving block, and the sealing block is provided with a locking assembly used for locking the first moving block. The sealing structure has the effects that the sealing performance is improved, and the possibility of leakage of fuel and gasified fuel gas is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel tank closure, in particular to a lidless closure assembly for a fuel tank filler neck. Background Art

[0002] A fuel tank for storing fuel is a commonly used fuel storage device during fuel transportation and use. A filler neck is provided on the fuel tank to facilitate fuel transfer for refueling and discharging. At the same time, in order to prevent fuel leakage when not refueling, a closure is often provided to seal the fuel tank filler neck.

[0003] In the prior art, a plug cover is mostly used as the closure to seal the fuel tank filler neck. The plug-in type plug cover is inserted into the filler neck for sealing. However, in actual use, the plug cover needs to be pulled out and inserted each time, which may cause wear after long-term use. At the same time, if the user inserts the plug improperly, there may be a gap between the plug cover and the filler neck, and the possibility of fuel and vaporized fuel gas leakage is relatively large, and the overall sealing performance needs to be enhanced. Summary of the Utility Model

[0004] In order to improve the sealing performance and reduce the possibility of fuel and vaporized fuel gas leakage, the present application provides a lidless closure assembly for a fuel tank filler neck.

[0005] The lidless closure assembly for a fuel tank filler neck provided by the present application adopts the following technical solution:

[0006] A lidless closure assembly for a fuel tank filler neck includes a closure block, a first moving block, and a second moving block. The closure block is provided with a first fuel filling groove, and the closure block is provided with a first moving groove and a second moving groove that communicate with the first fuel filling groove. The first moving block is slidably disposed in the first moving groove, and the first moving block is provided with a second fuel filling groove that can communicate with the first fuel filling groove. The second moving block is slidably disposed in the second moving groove, and the second moving block is provided with a third fuel filling groove that can communicate with the first fuel filling groove. Both the first moving block and the second moving block can seal the first fuel filling groove. A transmission assembly is disposed between the first moving block and the second moving block, and the transmission assembly is used to drive the second moving block to move according to the movement of the first moving block. The closure block is provided with a locking assembly, and the locking assembly is used to lock the first moving block.

[0007] By adopting the above technical solution, the closing block is installed on the fuel tank by bolts or welding, or integrally formed with the fuel tank. A sealing treatment is carried out between the closing block and the fuel tank. When refueling is required, the locking of the contact locking component is released, the first moving block is pushed to move in the first moving groove, and the second moving block is driven to move in the second moving groove through the transmission component, so that the second fueling groove on the first moving block communicates with the first fueling groove, and at the same time, the third fueling groove on the second moving block communicates with the first fueling groove, making the closing frame penetrate. The fueling gun can be inserted into the first fueling groove for refueling. After refueling is completed, the first moving block is pushed to move and drive the second moving block to move, so that the second fueling groove and the third fueling groove do not communicate with the first fueling groove, and the first moving block is locked by the locking component. At this time, both the first moving block and the second moving block block and seal the first fueling groove. A sealing gasket or other sealing structure can be arranged between the first moving block, the second moving block and the closing block to further enhance the sealing performance. Through the double-layer sealing design of the first moving block and the second moving block, the overall sealing performance is improved. Compared with the plug cover structure, this closing component improves the sealing performance and reduces the possibility of leakage of fuel and fuel gas after gasification.

[0008] Preferably, the transmission component includes a transmission rod, a first transmission block and a second transmission block. The closing block is provided with a transmission cavity communicating with both the first moving groove and the second moving groove. The transmission rod is rotatably arranged in the transmission cavity. The transmission rod is provided with a first transmission groove and a second transmission groove. The first transmission block is slidably arranged in the first transmission groove and connected to the first moving block. The second transmission block is slidably arranged in the second transmission groove and connected to the second moving block.

[0009] By adopting the above technical solution, when the first moving block moves, it drives the first transmission block to move in the first transmission groove, thereby driving the transmission rod to rotate in the transmission cavity, and then driving the second transmission block to move in the second transmission groove, thereby driving the second moving block to move, realizing transmission. The operation is simple and convenient, improving the convenience of use.

[0010] Preferably, the first moving block is provided with a first auxiliary block. The first transmission block is connected to the first auxiliary block. The first auxiliary block is slidably arranged in the transmission cavity and can abut against the inner wall of the transmission cavity. The second moving block is provided with a second auxiliary block. The second transmission block is connected to the second auxiliary block. The second auxiliary block is slidably arranged in the transmission cavity and can abut against the inner wall of the transmission cavity.

[0011] By adopting the above technical solution, by arranging the first auxiliary block and the second auxiliary block, the strength of the first moving block and the second moving block is increased, the possibility of damage during the transmission process is reduced, and the strength is improved. At the same time, the first auxiliary block and the second auxiliary block are limited in the transmission cavity, reducing the possibility of excessive movement of the first moving block and the second moving block, reducing the wear caused by excessive movement, and improving the durability.

[0012] Preferably, the first moving block is provided with a sliding rod, the closing block is provided with a sliding groove communicating with the first moving groove, and the sliding rod is slidably inserted into the sliding groove.

[0013] By adopting the above technical solution, the movement of the first moving block is driven by the movement of the sliding rod in the sliding groove, so that the first moving block can be arranged inside the closing block, improving the stability of the connection and fixation between the first moving block and the closing block. At the same time, the movement of the first moving block is driven by the sliding rod, improving the convenience of use.

[0014] Preferably, the locking assembly includes a locking plate and a locking spring. The inner wall of the sliding groove is provided with a locking groove. The locking plate is slidably arranged in the locking groove and can be inserted into the sliding groove. The locking spring is arranged inside the locking plate. The locking spring connects the locking plate and the inner wall of the locking groove, and the locking plate can abut against the sliding rod.

[0015] By adopting the above technical solution, during refueling, the locking plate is pushed to move in the locking groove and compress the locking spring. At this time, the locking plate no longer presses tightly against the sliding rod, and the sliding rod can be pushed to drive the first moving block to move for refueling. After refueling, the sliding rod is moved and then the locking plate is released. The locking spring resumes its original state and pushes the locking plate to move and insert into the sliding groove and press tightly against the sliding rod to complete the locking, improving the stability of the locking of the sliding rod and reducing the possibility of fuel leakage caused by the movement of the sliding rod due to misoperation or accidental touch.

[0016] Preferably, the locking plate is provided with a first fixing groove and a second fixing groove, and the sliding rod can be inserted into the first fixing groove and the second fixing groove.

[0017] By adopting the above technical solution, when locking, the sliding rod is inserted into the first fixing groove for locking. During refueling, the locking plate is pushed to move and compress the locking spring. After pushing the sliding rod to move so that the first fueling groove, the second fueling groove and the third fueling groove are communicated, the locking plate is released. The locking spring resumes its original state and pushes the locking plate to move and insert into the sliding groove. At this time, the sliding rod is inserted into the second fixing groove. The stability of the locking and fixing of the sliding rod when not refueling is improved through the first fixing groove, and the stability of the locking and fixing of the sliding rod during refueling is improved through the second fixing groove. At the same time, it is not necessary to manually push the sliding rod or the locking plate during refueling, improving the convenience of use.

[0018] Preferably, the locking plate is provided with a first finger groove, and the closing block is provided with a second finger groove communicating with the locking groove, and the first finger groove can communicate with the second finger groove.

[0019] By adopting the above technical solution, when in use, a finger or other rod-shaped workpiece can be inserted into the first finger groove to move and then inserted into the second finger groove, thereby pushing the locking plate to move and compress the locking spring, improving the convenience of use.

[0020] Preferably, a return spring is arranged in the sliding groove, and the return spring abuts against the side wall of the sliding rod.

[0021] By adopting the above technical solution, when refueling, the sliding rod is pushed to compress the return spring. After refueling is completed, the sliding rod is released, and the return spring restores to push the sliding rod to move, so that the first moving block and the second moving block close the first fueling groove. By arranging the return spring, the reset of the sliding rod is realized, the convenience of use is improved, and at the same time, the possibility that the sliding rod moves driven by incorrect operation or accidental touch to penetrate the first fueling groove is reduced, thereby reducing the probability of fuel leakage and improving the safety performance.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. By arranging the closing block, the first moving block, the second moving block, the first moving groove, the second moving groove, the first fueling groove, the second fueling groove, the third fueling groove, the transmission component and the locking component, the closing block is connected to the fuel tank, and the first fueling groove communicates with the fuel tank filling port. When refueling, the locking of the locking component is released, the first moving block is pushed to move in the first moving groove and drives the second moving block to move in the second moving groove through the transmission component, so that the second fueling groove and the third fueling groove communicate with the first fueling groove, and at this time, refueling can be carried out normally. After refueling is completed, the first moving block is pushed to move to drive the second moving block to move, and the first moving block is locked by the locking component. The first fueling groove is closed by the first moving block and the second moving block, thereby improving the sealing performance and reducing the possibility of fuel leakage;

[0024] 2. By arranging the transmission rod, the first transmission block, the second transmission block, the transmission cavity, the first transmission groove and the second transmission groove, when the first moving block moves, the first transmission block moves in the first transmission groove and drives the rotating rod to rotate in the transmission cavity, so as to push the second transmission block to move through the inner wall of the second transmission groove, driving the second moving block to move, realizing transmission, and the operation is simple and convenient;

[0025] 3. By arranging the locking plate, the locking groove, the locking spring, the first fixing groove, the second fixing groove, the sliding rod and the sliding groove, when refueling is required, the locking plate is pushed to move in the locking groove to compress the locking spring, so that the sliding rod disengages from the first fixing groove. Then the sliding rod is pushed to move in the sliding groove to the front of the second fixing groove, the locking plate is released, and the locking spring restores to push the locking plate to insert into the sliding and makes the sliding rod insert into the second fixing groove. At this time, refueling operation can be carried out, improving the convenience of locking and facilitating use. Description of the Drawings

[0026] Figure 1 is an overall schematic diagram of a lidless closing assembly for a fuel tank filling port provided by an embodiment of the present application.

[0027] Figure 2 It is a sectional view used to show the internal structure of the closed block.

[0028] Figure 3 It is a sectional view used to show the structure of the transmission component.

[0029] Figure 4 It is a sectional view used to show the structure of the locking component.

[0030] Description of the reference numerals: 1, closed block; 11, first fuel filling groove; 12, first moving groove; 13, second moving groove; 14, transmission cavity; 15, sliding groove; 16, locking groove; 17, second finger groove; 2, first moving block; 21, second fuel filling groove; 22, first auxiliary block; 23, sliding rod; 231, return spring; 3, second moving block; 31, third fuel filling groove; 32, second auxiliary block; 4, transmission component; 41, transmission rod; 411, first transmission groove; 412, second transmission groove; 42, first transmission block; 43, second transmission block; 5, locking component; 51, locking plate; 511, first fixing groove; 512, second fixing groove; 513, first finger groove; 52, locking spring. Detailed implementation manners

[0031] The following further elaborates on this application in conjunction with the attached Figures 1-4 for a more detailed description.

[0032] The embodiment of this application discloses a lidless closing component for a fuel tank filling port. Refer to Figures 1 to 3, which includes a closed block 1, a first moving block 2 and a second moving block 3. The bottom wall of the closed block 1 is integrally and fixedly connected to the top wall of the fuel tank (not shown in the figure). The closed block 1 is provided with a first fuel filling groove 11 communicating with the fuel filling port of the fuel tank. Inside the closed block 1, there are a first moving groove 12 and a second moving groove 13 communicating with the first fuel filling groove 11. The first moving groove 12 is located directly above the second moving groove 13. The first moving block 2 is slidably arranged in the first moving groove 12 in a matching manner, and the second moving block 3 is slidably arranged in the second moving groove 13 in a matching manner. Both the first moving block 2 and the second moving block 3 can close the first fuel filling groove 11. The first moving block 2 is provided with a second fuel filling groove 21 that can communicate with the first fuel filling groove 11, and the second fuel filling block is provided with a third fuel filling groove 31 that can communicate with the second fuel filling groove 21. The surface of the closed frame is provided with a sliding groove 15 communicating with the first moving groove 12. A sliding rod 23 is fixedly arranged on the top wall of the first moving block 2, and the sliding rod 23 is slidably arranged in the sliding groove 15. The closed block 1 is provided with a transmission component 4 for driving the second moving block 3 to move according to the movement of the first moving block 2, and the closed block 1 is provided with a locking component 5 for locking the sliding rod 23. When refueling, the first moving block 2 is pushed to move through the sliding rod 23 so that the first fuel filling groove 11 communicates with the second fuel filling groove 21. At the same time, the second moving block 3 is driven to move through the transmission component 4 so that the third fuel filling groove 31 communicates with the first fuel filling groove 11, and refueling can be carried out at this time. After refueling, the sliding rod 23 is pushed to drive the first moving block 2 and the second moving block 3 to move, and the sliding rod 23 is locked by the locking component 5. The first fuel filling groove 11 is closed by the first moving block 2 and the second moving block 3, thereby improving the sealing performance and reducing the possibility of fuel leakage.

[0033] In order to improve the convenience of transmission, refer to Figure 2 and Figure 3, the transmission assembly 4 includes a transmission rod 41, a first transmission block 42, and a second transmission block 43. A transmission cavity 14 communicating with both the first moving groove 12 and the second moving groove 13 is provided in the closing block 1. The transmission rod 41 is rotatably arranged in the transmission cavity 14 through a rotating shaft, and a first transmission groove 411 and a second transmission groove 412 are provided through the transmission rod 41 along the length direction. The bottom wall of the first moving block 2 is integrally provided with a first auxiliary block 22. The first auxiliary block 22 is slidably arranged in the transmission cavity 14 and can abut against the inner wall of the transmission cavity 14. The first transmission block 42 is cylindrical and fixedly arranged on the side walls on both sides of the first auxiliary block 22. The first transmission block 42 is adapted to pass through the first transmission groove 411 and can slide in the first transmission groove 411. The top wall of the second moving block 3 is integrally provided with a second auxiliary block 32. The second auxiliary block 32 is slidably arranged in the transmission cavity 14 and can abut against the inner wall of the transmission cavity 14. The second transmission block 43 is cylindrical and fixedly arranged on the side walls on both sides of the second auxiliary block 32. The second transmission block 43 is adapted to pass through the second transmission groove 412 and can slide in the second transmission groove 412. When the first moving block 2 moves, it drives the first transmission block 42 to move in the first transmission groove 411, thereby driving the transmission rod 41 to rotate. The rotation of the transmission rod 41 drives the second transmission block 43 to move in the second transmission groove 412, thereby driving the second moving block 3 to move, realizing transmission. The overall operation is automatically completed, which is simple and convenient.

[0034] To improve the convenience of use, referring to Figure 3 and Figure 4, the locking component 5 includes a locking plate 51 and a locking spring 52. A locking groove 16 is provided on the inner wall of the sliding groove 15. The locking plate 51 is slidably disposed in the locking groove 16 in a matching manner. The locking plate 51 can be inserted into the sliding groove 15. The locking spring 52 is disposed in the locking groove 16, and the locking spring 52 connects the inner wall of the locking groove 16 and the side wall of the locking plate 51. The locking plate 51 is provided with a first fixing groove 511 and a second fixing groove 512 penetrating therethrough. The first fixing groove 511 penetrates the side wall of the locking plate 51 away from the first fuel tank 11, and the second fixing groove 512 penetrates the side wall of the locking plate 51 close to the first fuel tank 11. The sliding rod 23 can be inserted into the first fixing groove 511 or the second fixing groove 512 in a matching manner. The top wall of the closed frame is provided with a second finger groove 17 communicating with the locking groove 16, and the top wall of the locking plate 51 is provided with a first finger groove 513 that can communicate with the second finger groove 17. A return spring 231 is fixedly disposed on the inner wall of the sliding groove 15. The return spring 231 abuts against the sliding rod 23 and is disposed below the locking plate 51. During refueling, the locking plate 51 is pushed to compress the locking spring 52 so that the sliding rod 23 disengages from the first fixing groove 511, the sliding rod 23 is moved to compress the return spring 231, and the first moving block 2 is driven to move. When the first fuel tank 11 communicates with the second fuel tank 21, the locking plate 51 is released. The locking spring 52 is restored to push the locking plate 51 into the sliding groove 15, so that the sliding rod 23 is inserted into the second fixing groove 512, and refueling can be performed at this time. After refueling is completed, the locking plate 51 is pushed to compress the locking spring 52, so that the sliding rod 23 disengages from the second fixing groove 512. At this time, the return spring 231 pushes the sliding rod 23 to move, driving the first moving block 2 to move, thereby completing the reset. At this time, the locking plate 51 is released, the locking spring 52 is restored to push the locking plate 51 into the sliding groove 15, and the sliding rod 23 is inserted into the first fixing groove 511 to complete the locking. The overall operation is convenient, improving the convenience of use.

[0035] The implementation principle of the lidless closing assembly for the fuel tank filler neck in the embodiments of this application is as follows: When refueling is required, the locking plate 51 is pushed to compress the locking spring 52, and the sliding rod 23 is disengaged from the first fixing groove 511. At this time, the sliding rod 23 is pushed to slide and compress the return spring 231. The sliding rod 23 drives the first moving block 2 to move. The movement of the first moving block 2 drives the first transmission block 42 to move, and drives the transmission rod 41 to rotate through the first transmission block 42. The rotation of the transmission rod 41 drives the second moving block 3 to move through the second transmission block 43 until the first fuel filling groove 11 communicates with the second fuel filling groove 21 and the third fuel filling groove 31. At this time, the locking plate 51 is released, and the locking spring 52 restores and pushes the locking plate 51 into the sliding groove 15, and the sliding rod 23 is inserted into the second fixing groove 512 to lock the sliding rod 23. At this time, refueling can be carried out smoothly. After refueling, the locking plate 51 is pushed to compress the locking spring 52, so that the sliding rod 23 is disengaged from the second fixing groove 512. At this time, the return spring 231 restores and pushes the sliding rod 23 to slide, and at the same time drives the first moving block 2 to move, and drives the second moving block 3 to move through the transmission assembly 4, so that both the first moving block 2 and the second moving block 3 close the first fuel filling groove 11. At this time, the locking plate 51 is released, and the locking spring 52 restores and pushes the locking plate 51 into the sliding groove 15, so that the sliding rod 23 is inserted into the second fixing groove 512 to complete the locking and fixing. The first fuel filling groove 11 is double-sealed by the first moving block 2 and the second moving block 3 to improve the sealing performance. Compared with the prior art of sealing with a plug cover, the possibility of fuel leakage is reduced.

[0036] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A capless closure assembly for a fuel tank filler opening, characterized in that: The invention comprises a closing block (1), a first moving block (2) and a second moving block (3); the closing block (1) is provided with a first oiling groove (11); the closing block (1) is provided with a first moving groove (12) and a second moving groove (13) which are communicated with the first oiling groove (11); the first moving block (2) is slidably arranged in the first moving groove (12); the first moving block (2) is provided with a second oiling groove (21) which can be communicated with the first oiling groove (11); the second moving block (3) is slidably arranged in the second moving groove (13) The second moving block (3) is provided with a third refueling groove (31) which can communicate with the first refueling groove (11); the first moving block (2) and the second moving block (3) can both close the first refueling groove (11); a transmission component (4) is provided between the first moving block (2) and the second moving block (3); the transmission component (4) is used to drive the second moving block (3) to move according to the movement of the first moving block (2); the closing block (1) is provided with a locking component (5); the locking component (5) is used to lock the first moving block (2).

2. The capless closure assembly for a fuel tank filler opening according to claim 1, characterized in that: The transmission assembly (4) comprises a transmission rod (41), a first transmission block (42) and a second transmission block (43); the closing block (1) is provided with a transmission cavity (14) which is in communication with the first movable groove (12) and the second movable groove (13); the transmission rod (41) is rotatably arranged in the transmission cavity (14); the transmission rod (41) is provided with a first transmission groove (411) and a second transmission groove (412); the first transmission block (42) is slidably arranged in the first transmission groove (411) and is connected to the first movable block (2); the second transmission block (43) is slidably arranged in the second transmission groove (412) and is connected to the second movable block (3).

3. The capless closure assembly for a fuel tank filler opening according to claim 2, characterized in that: The first moving block (2) is provided with a first auxiliary block (22), the first transmission block (42) is connected to the first auxiliary block (22), the first auxiliary block (22) is slidably arranged in the transmission cavity (14) and can abut against the inner wall of the transmission cavity (14), and the second moving block (3) is provided with a second auxiliary block (32), the second transmission block (43) is connected to the second auxiliary block (32), the second auxiliary block (32) is slidably arranged in the transmission cavity (14) and can abut against the inner wall of the transmission cavity (14).

4. The capless closure assembly for a fuel tank filler opening according to claim 1, characterized in that: The first moving block (2) is provided with a sliding rod (23), the closing block (1) is provided with a sliding groove (15) communicating with the first moving groove (12), and the sliding rod (23) is slidably inserted in the sliding groove (15).

5. The capless closure assembly for a fuel tank filler opening according to claim 4, characterized in that: The locking assembly (5) comprises a locking plate (51) and a locking spring (52); the inner wall of the sliding groove (15) is provided with a locking groove (16); the locking plate (51) is slidably arranged in the locking groove (16) and can be inserted into the sliding groove (15); the locking spring (52) is arranged in the locking plate (51); the locking spring (52) connects the locking plate (51) and the inner wall of the locking groove (16); and the locking plate (51) can abut against the sliding rod (23).

6. The capless closure assembly for a fuel tank filler opening according to claim 5, characterized in that: The locking plate (51) is provided with a first fixing groove (511) and a second fixing groove (512), the sliding rod (23) can be inserted into the first fixing groove (511), and the sliding rod (23) can be inserted into the second fixing groove (512).

7. The capless closure assembly for a fuel tank filler opening according to claim 5, characterized in that: The locking plate (51) is provided with a first finger groove (513), and the closing block (1) is provided with a second finger groove (17) communicating with the locking groove (16), and the first finger groove (513) can communicate with the second finger groove (17).

8. The capless closure assembly for a fuel tank filler opening according to claim 4, characterized in that: A return spring (231) is arranged in the sliding groove (15), and the return spring (231) abuts against the side wall of the sliding rod (23).

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