CN210760248U

CN210760248U - Fuel tank cap

Info

Publication number: CN210760248U
Application number: CN202020736232.4U
Authority: CN
Inventors: 牛强; 郝延磊; 王成全
Original assignee: Shandong Yuhong New Material Technology Co ltd
Current assignee: Shandong Yuhong New Material Technology Co ltd
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2020-06-16
Anticipated expiration: 2030-05-08

Abstract

The utility model relates to a fuel tank cap, which comprises a cap body and a liquid level display device arranged on the cap body. The liquid level display device comprises a floater and a transmission member arranged on the cover body, and the upper end of the transmission member is provided with a pointer; the transmission component can rotate relative to the cover body, and the floater can drive the pointer to rotate forwards or reversely through the transmission component when moving upwards or downwards. The cover body is provided with a connecting part, and the connecting part is used for connecting the cover body with an opening of the oil tank; the transmission member comprises a short shaft penetrating through the connecting part and a rod piece arranged at the lower end of the short shaft; the rod piece is a spiral rod, the middle part of the floater is provided with a first through hole matched with the shape of the rod piece, and the floater is sleeved on the rod piece; the float moves up and down to drive the rod piece to rotate. The utility model relates to a fuel tank cap, this fuel tank cap have the liquid level display function, and simple structure, be suitable for the use, reduce the manufacturing and the use cost of oil tank, are particularly useful for oil tank for the agricultural machinery or oil tank for the tractor.

Description

Fuel tank cap

Technical Field

The utility model relates to a fuel tank cap belongs to tractor accessory technical field.

Background

Fuel tanks, i.e., fuel storage devices, have high requirements for corrosion resistance. The prior art fuel tanks are typically provided with two openings: one is the fuel filler port which we can see directly and one is the opening for the fuel metering device. The oil tank is provided with two openings, so that the manufacturing cost is high, and the opening for installing the fuel metering device has the defect of oil leakage.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to above not enough, provide a fuel tank cap, this fuel tank cap has the liquid level display function, and simple structure, is suitable for the use, reduces the manufacturing and the use cost of oil tank, is particularly useful for oil tank for the agricultural machinery or oil tank for the tractor.

For solving the above problem, the utility model discloses a technical scheme as follows:

a fuel tank cover comprises a cover body and a liquid level display device arranged on the cover body; the liquid level display device comprises a floater and a transmission member arranged on the cover body, and the upper end of the transmission member is provided with a pointer; the transmission component can rotate relative to the cover body, and the floater can drive the pointer to rotate forwards or reversely through the transmission component when moving upwards or downwards; the transmission member comprises a rod piece; the lower end of the cover body is provided with at least one guide rod which is vertically arranged; the lower extreme of guide bar is connected with the connecting piece, and the lower extreme of member rotates to be installed on the connecting piece.

As an improvement, the cover body is provided with a connecting part, and the connecting part is used for connecting the cover body with an opening of the oil tank; the transmission member comprises a short shaft penetrating through the connecting part and the rod piece mounted at the lower end of the short shaft; the rod piece is a spiral rod, the middle part of the floater is provided with a first through hole matched with the shape of the rod piece, and the floater is sleeved on the rod piece; the float moves up and down to drive the rod piece to rotate.

As an improvement, a second through hole which is vertically arranged is arranged on the connecting part, and the short shaft is rotatably arranged in the second through hole; the upper end of the short shaft is provided with a shaft shoulder, the lower end of the short shaft is provided with a stop pin, and the shaft shoulder and the stop pin limit the short shaft in the central hole of the connecting part from the upper end and the lower end respectively.

As an improvement, the lower end of the short shaft is provided with a mounting groove, and the upper end of the rod piece is mounted in the mounting groove.

As an improvement, the lower end of the cover body is provided with two vertically arranged guide rods, the floater is provided with a guide groove or a guide hole, and the guide rods penetrate through the guide groove or the guide hole; the guide rod prevents the float from rotating horizontally when moving up and down.

As an improvement, the cover body is provided with an installation chamber with an opening at the upper part; the pointer is located in the installation room.

As an improvement, a dial matched with the pointer is arranged in the installation chamber.

As an improvement, a sealing ring is sleeved on the connecting part and used for sealing between the oil tank cover and the oil tank; the connecting part is provided with an external thread.

As an improvement, the cover body is provided with a concave part which is convenient for a user to apply force when rotating the oil tank cover.

The utility model adopts the above technical scheme, compare with prior art, have following advantage:

the oil tank cover is provided with the liquid level display device, so that the oil tank structure is simplified, the manufacturing and using cost of the oil tank is reduced, and the technical defect of oil leakage at the position of the oil tank liquid level meter can be effectively avoided.

The float is arranged on the oil tank cover and can be under the buoyancy action of liquid in the oil tank, and due to the action of the two guide rods, the float cannot rotate and can only vertically move along the guide rods, namely, the float can move upwards or downwards along with the liquid level. When the float moves upwards or downwards, the rod piece is driven to rotate through the matching between the first through hole and the spiral rod piece, so that the pointer is driven to rotate, the pointer points to different positions of the dial scale to display the liquid level, and the liquid level display device has the advantages of simple structure, low manufacturing cost and the like.

The upper end and the lower end of the rod piece are respectively and rotatably arranged on the cover body and the connecting piece, so that when the floater moves upwards or downwards, the rod piece is more stable and not easy to deform in rotation, the friction resistance between the short shaft and the connecting part in the rotation process of the rod piece is effectively reduced, the rotation is smoother, the liquid level indication is more accurate and sensitive, and the service lives of the short shaft and the connecting part are prolonged; and after the connecting rod is disassembled, the maintenance and the replacement of the floater and the guide rod are facilitated.

The present invention will be described in detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural view of an oil tank cap according to an embodiment of the present invention;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a cross-sectional view B-B of FIG. 2;

FIG. 4 is an enlarged top view of FIG. 3;

FIG. 5 is an enlarged cross-sectional view of C-C of FIG. 3;

FIG. 6 is an enlarged view at A in FIG. 3;

in the figure, 1-cover, 2-connecting part, 3-sealing ring, 4-external thread, 5-recess, 6-installation chamber, 7-float, 8-pointer, 9-watch cover, 10-dial, 11-transmission component, 12-short shaft, 13-rod, 14-first through hole, 15-shaft shoulder, 16-stop pin, 17-second through hole, 18-installation groove, 19-pin shaft, 20-guide rod, 21-guide groove, and 22-connecting piece.

Detailed Description

Examples

As shown in fig. 1, 2, 3, 4, 5 and 6 in common, a fuel tank cap includes a cap body 1 and a liquid level display device mounted on the cap body 1. The cover body 1 is provided with an installation chamber 6 with an opening at the upper part; a transparent cover 9 is mounted on the mounting chamber 6. The installation chamber 6 is provided with a pointer 8 and a dial 10 matched with the pointer 8. Be equipped with connecting portion 2 on the lid 1, connecting portion 2 are used for being connected of lid 1 and oil tank trompil. The cover body 1 and the connecting part 2 are of an integral structure. The connecting part 2 is sleeved with a sealing ring 3, and the sealing ring 3 is used for sealing between the oil tank cover and the oil tank; the connecting part 2 is provided with an external thread 4. The cover body 1 is provided with a plurality of concave portions 5 on the surface layer, and the concave portions 5 facilitate the force application when the user rotates the fuel tank cap.

As shown collectively in fig. 1, 2, 3, 4, 5 and 6, the liquid level display device includes a float 7 and a transmission member 11 provided on the cover body 1, and a pointer 8 is mounted on an upper end of the transmission member 11. The transmission member 11 can rotate relative to the cover body 1, and the pointer 8 can be driven to rotate forwards or backwards through the transmission member 11 when the floater 7 moves upwards or downwards. The transmission member 11 includes a stub shaft 12 vertically penetrating the connection part 2 and a rod 13 mounted at a lower end of the stub shaft 12. The rod piece 13 is a spiral rod, the rod piece 13 is formed by processing flat steel, one end of the flat steel is twisted relative to the other end of the flat steel in a rotating mode, the flat steel forms the spiral rod piece, a first through hole 14 matched with the rod piece 13 in shape is formed in the middle of the floater 7, and the floater 7 is sleeved on the rod piece 13. The rod 13 is rotated by the up and down movement of the float 7.

As shown in fig. 1, 2, 3, 4, 5 and 6, the connecting portion 2 is provided with a second through hole 17 vertically arranged, and the stub shaft 12 is rotatably installed in the second through hole 17. The upper end of the short shaft 12 is provided with a shaft shoulder 15, the lower end is provided with a stop pin 16, and the shaft shoulder 15 and the stop pin 16 respectively limit the short shaft 12 in the central hole of the connecting part 2 from the upper end and the lower end. The lower end of the short shaft 12 is provided with a mounting groove 18, and the upper end of the rod 13 is detachably mounted in the mounting groove 18. A pin 19 is mounted between the stub shaft 12 and the rod 13.

As shown in fig. 1, 2, 3, 4, 5 and 6, at least one vertically arranged guide rod 20 is installed at the lower end of the cover body 1, a guide groove 21 or a guide hole is formed on the float 7, and the guide rod 20 penetrates through the guide groove 21 or the guide hole; the guide rod 20 prevents the float 7 from rotating horizontally when moving up and down. The guide rods 20 preferred in this embodiment are installed at the lower end of the connection part 2, the number of the guide rods 20 is two, and the two guide rods 20 are respectively provided at both sides of the float 7. The float 7 is provided with two guide grooves 21, and the two guide rods 20 are respectively arranged in the corresponding guide grooves 21. The lower ends of the two guide rods 20 are connected together by a connecting member 22, and the lower end of the rod 13 is rotatably mounted on the connecting member 22.

When in use, the fuel tank cover is arranged on the fuel filler hole of the fuel tank. The float 7 is not rotated and only can move vertically along the guide rods 20 due to the buoyancy effect of the liquid received by the float 7, namely the float 7 can move upwards or downwards along with the liquid level. When the float 7 moves upwards or downwards, the rod 13 is driven to rotate through the matching between the first through hole 14 and the spiral rod 13, so that the pointer 8 is driven to rotate and points to different positions of the dial 10.

To sum up, the utility model relates to a fuel tank cap, this fuel tank cap have the liquid level display function, and simple structure, be suitable for the use, reduce the manufacturing and the use cost of oil tank, are particularly useful for oil tank for the agricultural machinery or oil tank for the tractor.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fuel tank cap, its characterized in that: comprises a cover body (1) and a liquid level display device arranged on the cover body (1);

the liquid level display device comprises a floater (7) and a transmission member (11) arranged on the cover body (1), and the upper end of the transmission member (11) is provided with a pointer (8); the transmission component (11) can rotate relative to the cover body (1), and the floater (7) can drive the pointer (8) to rotate forwards or backwards through the transmission component (11) when moving upwards or downwards; the transmission member (11) comprises a rod (13);

the lower end of the cover body (1) is provided with at least one guide rod (20) which is vertically arranged;

the lower end of the guide rod (20) is connected with a connecting piece (22), and the lower end of the rod piece (13) is rotatably arranged on the connecting piece (22).

2. The fuel tank cap according to claim 1, characterized in that: the cover body (1) is provided with a connecting part (2), and the connecting part (2) is used for connecting the cover body (1) with an opening of the oil tank; the transmission component (11) comprises a short shaft (12) penetrating through the connecting part (2) and a rod (13) mounted at the lower end of the short shaft (12);

the rod piece (13) is a spiral rod, a first through hole (14) matched with the rod piece (13) in shape is formed in the middle of the floater (7), and the floater (7) is sleeved on the rod piece (13); the rod (13) is driven to rotate when the floater (7) moves up and down.

3. The tank cap according to claim 2, characterized in that: a second through hole (17) which is vertically arranged is formed in the connecting part (2), and the short shaft (12) is rotatably arranged in the second through hole (17); the upper end of the short shaft (12) is provided with a shaft shoulder (15), the lower end of the short shaft is provided with a stop pin (16), and the shaft shoulder (15) and the stop pin (16) respectively limit the short shaft (12) in the central hole of the connecting part (2) from the upper end and the lower end.

4. The tank cap according to claim 2, characterized in that: the lower end of the short shaft (12) is provided with an installation groove (18), and the upper end of the rod piece (13) is installed in the installation groove (18).

5. The tank cap according to claim 2, characterized in that: the lower end of the cover body (1) is provided with two vertically arranged guide rods (20), the floater (7) is provided with a guide groove (21) or a guide hole, and the guide rods (20) penetrate through the guide groove (21) or the guide hole; the guide rod (20) prevents the float (7) from horizontally rotating when moving up and down.

6. The fuel tank cap according to claim 1, characterized in that: the cover body (1) is provided with an installation chamber (6) with an opening at the upper part; the pointer (8) is positioned in the mounting chamber (6).

7. The fuel tank cap according to claim 6, characterized in that: a dial (10) matched with the pointer (8) is arranged in the mounting chamber (6).

8. The tank cap according to claim 2, characterized in that: the connecting part (2) is sleeved with a sealing ring (3), and the sealing ring (3) is used for sealing between the oil tank cover and the oil tank; the connecting part (2) is provided with an external thread (4).

9. The tank cap according to claim 2, characterized in that: be equipped with depressed part (5) on lid (1), depressed part (5) application of force when convenient to use person rotates the fuel tank cap.