CN207177530U - Fuel tank Lock structure - Google Patents

Abstract

The utility model is on a kind of fuel tank Lock structure, the tank cap lock system is applied to the fuel filler neck of vehicle, the tank cap lock includes a hollow pedestal and one can be in the oil cap that open position or closed position are carried out on the pedestal, the oil cap is provided with lock body, the pedestal is provided with fixed seat, and the fixed seat is provided with the actuation mechanism for pinning the lock body；The oil cap includes a body, an enclosing cover combined with the body, one in the forcing piece moved on the body, and the block piece for limiting the forcing piece, ventilating mechanism is installed on the body, and it is provided with a spheroid below the ventilating mechanism, the spheroid is limited by block piece, and the ventilating mechanism system is at the nearly center of the body, and the closing piece system is located at the outside of the surrounding wall of the oil cap, the surrounding wall surrounds the ventilating mechanism, and forms all-round collection headroom with the enclosing cover；So that the top of the body forms the larger collection headroom of all-round shape, thereby lift the gas collection control effect of the tank cap lock, and the closing piece system located at the oil cap body surrounding wall outside, thereby come make the fuel tank latch mechanism simplify, and can reach the tank cap lock miniaturization effect.

Description

Fuel tank Lock structure

Technical field

The utility model is about a kind of fuel tank Lock structure, especially a kind of gas collection control that can thereby lift the tank cap lock Effect, and the fuel tank latch mechanism can be made to simplify, and can reach the fuel tank Lock structure of the effect of tank cap lock miniaturization.

Background technology

The vehicle in combustion engine powered source can set a fuel tank for fuel storage, and the fuel tank is provided with fuel filler neck and fired with convenient The addition of oil, the fuel filler neck are provided with oil cap, avoid the water in the external world or foreign matter from entering in the fuel tank by the oil cap, while can The oil gas for avoiding the liquid level of fuel oil in fuel tank from being volatilized, which is arbitrarily diverged in air, to be polluted.In the fuel tank when internal combustion engine operates A powerful negative pressure can be formed, and when internal combustion engine is inoperative, one oil gas can be produced because of the volatilization of fuel oil in the fuel tank The bulbs of pressure；Therefore the oil cap is provided with open to atmosphere passage, thereby come the swollen of prevent negative pressure in the fuel tank and oil gas Swelling pressure power；Polluted to avoid the oil gas of fuel oil volatilization from being arbitrarily emitted into air, be to there is dealer to create TWI451987 Patent Cases.

As shown in Figure 1, 2, the TWI451987 Patent Cases by double venting channels design, to make volatilization in fuel tank Oil gas is thrown into air by quantitative, thereby come reach reduce oil vapour pollution purpose；The TWI451987 Patent Cases are no doubt The problem of pollution is reduced with effective oil gas for solving volatilization, but closing piece A1 is set in the pedestal A of the TWI451987 Patent Cases And gas collection mechanism A2, in turn resulted in gas collection mechanism A2 compulsory must be located in pedestal A in an offset manner, to make this Vacating space sets closing piece A1 in pedestal A, therefore causes the collection headroom above pedestal A to diminish, and can cause to collect Gas control ability greatly reduces.

Therefore, a kind of fuel tank Lock structure how is provided, to lift the collection headroom of tank cap lock and gas collection control effect, For vehicle dealer problem urgently to be resolved hurrily.

Utility model content

【The utility model problem to be solved】

The utility model main purpose is to provide a kind of fuel tank Lock structure, is mainly to overcome to commonly use tank cap lock collection headroom Insufficient and bad gas collection control effect missing.

【The technological means solved the problems, such as】

Therefore, the first technical way of the present utility model, there is provided a kind of fuel tank Lock structure, the tank cap lock system are applied to The fuel filler neck of vehicle, the tank cap lock include a hollow pedestal and one can be in carrying out open position or closed position on the pedestal Oil cap, the oil cap is provided with lock body, and the pedestal is provided with fixed seat, the fixed seat be provided with pin the lock body make motivation Structure；The oil cap includes a body, an enclosing cover combined with the body, one in the forcing piece moved on the body, and a limit The block piece of the forcing piece is made, ventilating mechanism is installed, and a spheroid, the spheroid are provided with below the ventilating mechanism on the body Limited by block piece, the ventilating mechanism system is at the nearly center of the body, and the lock system is located at the surrounding wall of the oil cap Outside, the surrounding wall surrounds the ventilating mechanism, and forms all-round collection headroom with the enclosing cover.

Therefore, the second technical way of the present utility model, there is provided a kind of fuel tank Lock structure, the surrounding wall surround out one First depressed part, the opposite direction of the enclosing cover towards the body is provided with one second depressed part, and is provided between the enclosing cover and the body Gasket seal.

Therefore, the 3rd technical way of the present utility model, there is provided a kind of fuel tank Lock structure, the actuation mechanism are at least wrapped A swing arm and the jacking block driven by the swing arm are included, when the jacking block clip is in the lock body, the tank cap lock system is locking-in state, should Oil cap is located at the closed position；When the jacking block is driven by the swing arm and when releasing the clip to the lock body, the tank cap lock system is solution Lock status, the oil cap are moved to the open position.

Therefore, the 4th technical way of the present utility model, there is provided a kind of fuel tank Lock structure, the swing arm of the swing arm drive The distance of center to the swing arm branch dot center of the swing arm be more than the jacking block jacking block drive center to the swing arm branch dot center away from From.

Therefore, the 5th technical way of the present utility model, there is provided a kind of fuel tank Lock structure, the body include accommodating Space, for the accommodation space to install the ventilating mechanism, the ventilating mechanism, which comprises at least, has one first spring, one by first bullet The first valve body, a second spring, second valve body supported by the spring force of second spring for the spring force support of spring, Yi Jiyi The ventilating mechanism is limited in the accommodation space by locking closure, and second valve body is provided with perforation, and the locking closure sets a passage, the appearance Connection one first path in lower section between being empty, first path include a through hole, one connect the occluded segment of the through hole, one it is accommodating should The passage of spheroid, and the breach located at the passage；The body is provided with open to atmosphere alternate path.

Therefore, the 6th technical way of the present utility model, there is provided a kind of fuel tank Lock structure, the alternate path at least wrap First passage and second channel containing one on the body, the second channel system is a downwardly open column-like paths；By This can prevent outside moisture from entering inside the oil cap.

Therefore, the 7th technical way of the present utility model, there is provided a kind of fuel tank Lock structure, the occluded segment are circular arc Shape.

【The effect of utility model】

The effect of the utility model can be reached by the first technical way is：Being located at by the ventilating mechanism should At the nearly center of body, and the lock system is located at the outside of the surrounding wall of the oil cap body, therefore can make the upper square of the body The collection headroom larger into all-round shape, thereby lift the gas collection control effect of the tank cap lock, and the lock system is located at the oil The outside of the surrounding wall of lid body, thereby come make the fuel tank latch mechanism simplify, and can reach the tank cap lock miniaturization effect.

The effect of the utility model can be reached by the second technical way is：The collection of the tank cap lock can thereby be made Headroom volume becomes big, can more lift the gas collection control effect of the tank cap lock, separately close by being provided between the enclosing cover and the body Gasket, it can prevent the gas in the collection headroom from improperly leaking.

The effect of the utility model can be reached by the 3rd technical way is：The tank cap lock can thereby be facilitated Close the controlling with opening.

The effect of the utility model can be reached by the 4th technical way is：The actuation mechanism machine can thereby be made The Labor-saving of tool control action.

The effect of the utility model can be reached by the 5th technical way is：It can thereby prevent negative in fuel tank Press and release excessive vaporizing oil-gas in fuel tank, to ensure that liquid level of fuel oil in fuel tank can smoothly supply the safety of internal combustion engine and fuel tank Property, while when vehicle is toppled over, the spheroid can clog the occluded segment and can prevent the quick ejection of fuel oil, so that lifting vehicle Security.

The effect of the utility model can be reached by the 6th technical way is：Can thereby it prevent outside moisture from entering Enter inside the oil cap.

The effect of the utility model can be reached by the 7th technical way is：The thereby occluded segment of the circular arc The compactness of the occluded segment can be lifted by being engaged with the spheroid, therefore when vehicle is toppled over, can more make the spheroid more certain Clog the occluded segment and the quick ejection of fuel oil can be prevented.

Brief description of the drawings

Fig. 1,2 are TWI451987 Patent Cases.

Fig. 3 is the oil cap exploded view of the utility model tank cap lock.

Fig. 4 is the upward view of the utility model tank cap lock.

Fig. 5 is the utility model tank cap lock sectional view.

Fig. 6 is the action schematic diagram that the utility model tank cap lock ambient atmos enter.

Fig. 7 is the action schematic diagram of the utility model tank cap lock exhaust of oil.

Embodiment

The effect of to be easier to understand structure of the present utility model and can reach, hereby coordinate brief description of the drawings as follows；

First, refer to Fig. 3, shown in 5, fuel tank Lock structure of the present utility model, the system of tank cap lock 1 be applied to vehicle plus Oil nozzle B, more particularly, the system of tank cap lock 1 are covered on the fuel filler neck B of vehicle, can thereby be covered fuel filler neck B； The tank cap lock 1 includes a hollow pedestal 2 and one can be in the oil cap 3 that open position or closed position are carried out on the pedestal 2.

As shown in figure 4, the pedestal 2 has the leg 21 of ring-type, the pedestal 2 is set to form one by the leg 21 hollow Ring bodies, the pedestal 2 set a pin joint seat 22 in the side of the leg 21, and the leg 21 is set in the opposite side of the setting pin joint seat 22 There is a fixed seat 23, the fixed seat 23 is provided with actuation mechanism 24；The pin joint seat 22 is available for the oil cap 3 to be pivoted.

As shown in figure 4, the actuation mechanism 24 comprises at least the jacking block 242 for having a swing arm 241 and being driven by the swing arm 24 1, When the jacking block 242 can clip on the oil cap 3, thereby come to make the oil cap 3 be locking-in state, and the oil cap 3 is located at the closing Position；When the jacking block 242 is driven by the swing arm 241 and when releasing the clip to the oil cap 3, the system of oil cap 3 is released state, should Oil cap 3 is movable to the open position；Wherein, the swing arm of the swing arm 241 drives a of center 241 to the swing arm branch of the swing arm 241 The jacking block that dot center 241b distance system is more than the jacking block 242 drives center 242a to the swing arm branch dot center of the swing arm 241 241b distance.

As shown in Fig. 3,4,5, the side of the oil cap 3 is provided with a rocking arm 3a, and rocking arm 3a one end is hubbed at the pedestal 2 On pin joint seat 22, thereby the oil cap 3 can be by making shuttle-type action being turned on and off with rocking arm 3a on the pedestal 2；Should In setting rocking arm 3a opposite side to be provided with a lock body 3b, lock body 3b can be blocked oil cap 3 by the jacking block 242 of the actuation mechanism 24 Tug, thereby when the clip of jacking block 242 is in lock body 3b, the system of tank cap lock 1 is locking-in state, and the oil cap 3 is located at the close stance Put；When the jacking block 242 is driven by the swing arm 241 and when releasing the clip to lock body 3b, the system of tank cap lock 1 is released state, The oil cap 3 is moved to the open position；The oil cap 3 includes enclosing cover 32, one that a body 31, one is combined with the body 31 in this The forcing piece 33 moved on body 31, and a block piece 34 for limiting the forcing piece 33.

As shown in Fig. 3,4,5, the body 31 is towards the circular surrounding wall 31a of side (top in figure) projection one, the body 31 have an accommodation space 311 and a resettlement section 312, and the system of accommodation space 311 is located at the scope that surrounding wall 31a institutes circle enclose Interior, more clearly real says that the system of accommodation space 311 is located at the nearly centre in the range of surrounding wall 31a institutes circle enclose, and this is accommodating One ventilating mechanism 4 is installed, the lower section of ventilating mechanism 4 is provided with a spheroid 5, more particularly, the ventilating mechanism 4 in space 311 System is at the 31 nearly center of body, and lock body 3b lies in the surrounding wall 31a of the body 31 integrally formed mode in outside and prolonged If surrounding wall 31a surrounds the ventilating mechanism 4 and forms all-round collection headroom P with the enclosing cover 32；The system position of resettlement section 312 In the opposite sides of surrounding wall 31a, the center of resettlement section 312 is convexly equipped with a mounting seat 31 21, and the mounting seat 3121 is convexly equipped with plural number Individual positioning convex point 3121a and locking hole 31 21b, the mounting seat 3121 are available for the forcing piece 33 to be installed with the block piece 34, and this is fixed Position salient point 3121a systems are available for the block piece 34 to position use when installing, when the b systems of locking hole 3121 are available for the block piece 34 installation Locking is used；In the periphery of the mounting seat 312 1, storage has elastic component 3122 for the resettlement section 312；The body 31 is in the accommodating sky Between 311 lower section connect one first path 313, first path 313 includes a through hole 3131, one and connects the through hole 3131 Occluded segment 3132, one houses the passage 3133 of the spheroid 5, and the breach 3134 located at the passage 3133, the system of breach 3134 On the end face of the mounting seat 3121, wherein, the system of spheroid 5 is steel ball；The body 31 is set by the side of the accommodation space 311 There are the insertion body 31 and even an open to atmosphere alternate path 314, the alternate path 314, which comprises at least, a first passage 3141 and a second channel 314 2, the first passage 3141 be connected with the second channel 3142, the system of second channel 31 42 For the column-like paths of one downward (lower section in figure) opening；Rocking arm 3a is extended by the 31 integrally formed mode of body.

As shown in Fig. 3,4,5, the system of enclosing cover 32 is covered on the surrounding wall 31a end of the body 31, surrounding wall 31a One first depressed part 31b is surrounded out, the first passage 314 1 insertion first depressed part 31b, phase of the enclosing cover 32 towards body 31 Opposite direction is provided with one second depressed part 321, and the first depressed part 31b is connected with second depressed part 321, and the enclosing cover 32 with It is situated between the surrounding wall 31a of the body 31 and is provided with a gasket seal 322, thereby makes the surrounding wall of the enclosing cover 32 and the body 31 The collection headroom P of perimeter closure shape is formed between 31a, further, by the first depressed part 31b and second depression Portion 3 21 is connected, and the volume of the all-round collection headroom P can be made to become big.

As shown in Fig. 3,4,5, the forcing piece 33 has the mounting hole 331 of a rectangle, and the forcing piece 33 is by the mounting hole 331 are embedded in the mounting seat 3121 of the resettlement section 312, and the forcing piece 33 is towards the side-line of body 31 by the resettlement section 312 312 2 top pressures of flexible member.

As shown in Fig. 3,4,5, the system of block piece 34 has certain rigid as made by metal material, should Block piece 34 is provided with buffer gear 6, and the system of buffer gear 6 is the bradyseism material being sheathed on the block piece 34, and the bradyseism Material is rubber, and the buffer gear 6 has a breakthrough part 61；The block piece 34 is provided with the range of the breakthrough part 61 is defined A plurality of positioning holes 341 and lock apertured 342；The positioning hole 341 is combined with the positioning convex point 3121a of the mounting seat 3121, should It is corresponding with the 121b of locking hole 3 of the mounting seat 3121 to lock apertured 342；When the block piece 34 is by the positioning hole 341 and the lock After apertured 342 is locked on the installation portion 3121, the block piece 34 can be formed to the forcing piece 33 and limited, and more particularly, this is compeled The tight side of part 33 by the resettlement section 312 3122 top pressures of flexible member, opposite side then limited by the block piece 34 and Without departing from the body 31, and can be moved up and down in the side of resettlement section 312 of the body 31；When the tank cap lock 1 is locking-in state When, the system of forcing piece 33 presses on height of the distance system more than the buffer gear 6 of deformation caused by fuel filler neck B.

As shown in Fig. 3,4,5, the ventilating mechanism 4, which comprises at least, has one first spring 41, one by the bullet of first spring 41 The second valve body 44 that first valve body 42 of spring force support, a second spring 43, one are supported by the spring force of second spring 43, and The ventilating mechanism 4 is limited in the accommodation space 311 by one locking closure 45, and second valve body 44 is provided with perforation 441, the locking closure 45 One passage 451 is set, and the passage 451 connects the first passage 3141 of the alternate path 31 4 of the body 31.

As shown in Fig. 3,5,6, the implementation of tank cap lock 1 of the present utility model, when internal-combustion engine vehicle operates, due to internal combustion engine Fuel oil in burnup fuel tank (not drawn in figure), therefore can cause to produce the suction of negative pressure in fuel tank, when the suction of negative pressure is more than During the spring force of first spring 41, first valve body 42 can be attracted by suction and produce to bottom offset, extraneous air Enter through alternate path 314, the path 313 of accommodation space 311 first in fuel tank, come the negative pressure in fuel tank of preventing, to ensure fuel tank Interior fuel oil can smoothly supply internal combustion engine.

As shown in Fig. 3,5,7, when the fuel oil volatilization in fuel tank, vaporizing oil-gas is produced because of the volatilization of fuel oil in fuel tank Expansive force, the expansive force of the oil gas can cause the internal pressure of fuel tank to be lifted, when the expansive force of oil gas is more than the second spring 43 Spring force when, second valve body 44 thereby can make second bullet by the expansive force pushing tow of the oil gas second spring 43 Spring 43 upwards receive by contracting, and thereby the oil gas bulbs of pressure of the inside of fuel tank can be logical through the first path 313, accommodation space 311, second Road 314 is emitted into air, at the same can by the spring force for presetting the second spring 43 make oil gas into quantitative discharge, by This meets environmental regulation and reduces pollution；The expansive force for working as oil gas volatilization in addition causes the internal pressure of fuel tank to be lifted, the oil The pressure of the expansive force of gas volatilization can make the forcing piece 33 be moved to the direction of enclosing cover 32, when actuation mechanism 24 is driven, and solve Except lock body 3b locking-in state when, the oil cap 3 is moved to open position, now can be by set on the block piece 34 Buffer gear 6, and the system of buffer gear 6 is located at the outside of the spheroid 5, therefore the forcing piece 33 and the block piece 34 can be reduced Strike note, and reduce caused aspirant when the tank cap lock 1 is opened.

Hold above-mentioned, one must more be mentioned that, tank cap lock 1 of the present utility model is near located at the body 31 by the ventilating mechanism 4 At center, and lock body 3b systems are located at the surrounding wall 31a of the body 31 outside, therefore can make the upper square of the body 31 The collection headroom P larger into all-round shape, the gas collection control effect of the tank cap lock 1 thereby is lifted, and lock body 3b systems are located at The surrounding wall 31a of the body 31 outside, thereby the mechanism of tank cap lock 1 is made to simplify, and it is small-sized to can reach the tank cap lock 1 The effect of change.

First effect of the present utility model is that including a hollow pedestal 2 and one by the tank cap lock 1 can be in this The oil cap 3 of open position or closed position is carried out on pedestal 2, the oil cap 3 is provided with lock body 3b, and the pedestal 2 is provided with fixed seat 23, the fixed seat 23 is provided with the actuation mechanism 24 for pinning lock body 3b；The oil cap 3 includes a body 31, one and the body 31 enclosing covers 32, one combined are in the forcing piece 33 moved on the body 31, and a block piece 34 for limiting the forcing piece 33, Ventilating mechanism 4 is installed on the body 31, and a spheroid 5 is provided with the lower section of ventilating mechanism 4, the spheroid 5 is the institute of block piece 34 Limitation, the system of ventilating mechanism 4 is at the 31 nearly center of body, and lock body 3b systems are located at the outer of the surrounding wall 31a of the oil cap 3 Side, surrounding wall 31a surround the ventilating mechanism 4 and form all-round collection headroom P with the enclosing cover 32；Set by the ventilating mechanism 4 At the 31 nearly center of body, and lock body 3b systems are located at the surrounding wall 31a of the body 31 of oil cap 3 outside, therefore can make The top of the body 31 forms the larger collection headroom P of all-round shape, thereby lifts the gas collection control effect of the tank cap lock 1, and And lock body 3b systems located at the body 31 of oil cap 3 surrounding wall 31a outside, thereby come make the mechanism of tank cap lock 1 simplify, and It can reach the effect of the tank cap lock 1 miniaturization.

Second effect of the present utility model is, one first depressed part 31b, the enclosing cover are surrounded out around wall 31a by this 32 are provided with one second depressed part 321 towards the opposite direction of the body 31, the first depressed part 31b and second depressed part 321 It is connected, and gasket seal 322 is provided between the enclosing cover 32 and the body 31；Thereby first depressed part 31b can be formed larger Collection headroom P, then second depressed part 321 of arranging in pairs or groups, the collection headroom P volumes of the tank cap lock 1 can be made to become bigger, more may be used The gas collection control effect of the tank cap lock 1 is lifted, separately by gasket seal 322 is provided between the enclosing cover 32 and the body 31, can be prevented Only the gas in the P of the collection headroom improperly leaks.

3rd effect of the present utility model is that being comprised at least by the actuation mechanism 24 has a swing arm 241 and put by this The jacking block 242 that arm 241 drives, when the clip of jacking block 242 is in lock body 3b, the system of tank cap lock 1 is locking-in state, the oil cap 3 Positioned at the closed position；When the jacking block 242 is driven by the swing arm 241 and when releasing the clip to lock body 3b, the tank cap lock 1 It is to be moved to the open position for released state, the oil cap 3；The closing of the tank cap lock 1 and the controlling opened can thereby be facilitated.

4th effect of the present utility model is, the 1a of center 24 is driven to the swing arm 241 by the swing arm of the swing arm 241 Swing arm branch dot center 241b distance be more than the jacking block 242 jacking block drive center 242a to swing arm branch dot center 241b's Distance；The Labor-saving that can thereby make the Mechanical course of actuation mechanism 24 act.

5th effect of the present utility model is, includes accommodation space 311 by the body 31, the accommodation space 311 To install the ventilating mechanism 4, the ventilating mechanism 4, which comprises at least, has one first spring 41, one by the spring of first spring 41 The second valve body 44, Yi Jiyi that first valve body 42 of power support, a second spring 43, one are supported by the spring force of second spring 43 The ventilating mechanism 4 is limited in the accommodation space 311 by locking closure 45, and second valve body 44 is provided with perforation 441, and the locking closure 451 is set A passage 451 is put, one first path 313 of the lower section of accommodation space 311 connection, first path 313 includes a through hole 3131st, an occluded segment 3132, one for connecting the through hole 3131 houses the passage 3133 of the spheroid 5, and located at the passage 3131 Breach 3134；The body 31 is provided with open to atmosphere alternate path 314；The negative pressure in fuel tank that can thereby prevent and release in fuel tank Excessive vaporizing oil-gas pressure, to ensure that liquid level of fuel oil in fuel tank can smoothly supply the security of internal combustion engine and fuel tank, while work as car When toppling over, the spheroid 5 can clog the occluded segment 3132 and can prevent the quick ejection of fuel oil, so that the safety of lifting vehicle Property.

6th effect of the present utility model is that being comprised at least by the alternate path 314 has one on the body 31 First passage 3141 and second channel 3142, the system of second channel 3 142 is a downwardly open column-like paths；It can thereby prevent Only outside moisture enters inside the oil cap 3.

7th effect of the present utility model is, is circular arc by the occluded segment 3132；By the obstruction of the circular arc Section 3132 is engaged with the spheroid 5, can lift the compactness of the occluded segment 313 2, therefore when vehicle is toppled over, can more make this Spheroid 5 is more certain to be clogged the occluded segment 3132 and can prevent the quick ejection of fuel oil.

Fuel tank Lock structure of the present utility model can really reach the purpose of demand, should meet practicality by above-mentioned construction The important document of the novelty of new patent, creativeness and practicality, whence propose the application of utility model patent in accordance with the law.

Reference numerals list

1 tank cap lock

2 pedestals

The pin joint seat of 21 leg 22

23 fixed seats

24 actuation mechanisms

241 swing arms

241a swing arms drive center 241b swing arm branch dot center

242 jacking blocks

242a jacking blocks drive center

3 oil caps

3a rocking arm 3b lock bodies

31 bodies

311 accommodation spaces

312 resettlement sections

3121 mounting seat 3121a positioning convex points

3121b locking holes

3122 flexible members

313 first paths

The occluded segment of 3131 through hole 3132

The breach of 3133 passage 3134

314 alternate paths

The second channel of 3141 first passage 3142

31a surrounding walls the first depressed parts of 31b

32 enclosing covers

321 second depressed parts

322 gasket seals

The mounting hole of 33 forcing piece 331

34 block pieces

341 positioning holes 342 lock apertured

4 ventilating mechanisms

41 first springs

42 first valve bodies

43 second springs

44 second valve bodies 441 are perforated

The passage of 45 locking closure 451

5 spheroids

6 buffer gears

61 breakthrough parts

Building A body A1 closing piece A1 gas collections mechanism

B fuel filler neck P collection headroom

Claims (7)

1. a kind of fuel tank Lock structure, the tank cap lock is applied to the fuel filler neck of vehicle, the tank cap lock include a hollow pedestal and One can be in the oil cap that open position or closed position are carried out on the pedestal, and the oil cap is provided with lock body, and the pedestal, which is provided with, to be fixed Seat, the fixed seat are provided with the actuation mechanism for pinning the lock body；The oil cap include a body, one combined with the body it is outer Lid, one are in the forcing piece moved on the body, and a block piece for limiting the forcing piece, and ventilator is provided with the body Structure, and a spheroid is provided with below the ventilating mechanism, the spheroid is limited by block piece, it is characterised in that the ventilating mechanism is set At the nearly center of the body, and the lock body surrounds the ventilating mechanism located at the outside of the surrounding wall of the oil cap, the surrounding wall, and with The enclosing cover forms all-round collection headroom.

2. fuel tank Lock structure as claimed in claim 1, it is characterised in that the surrounding wall surrounds out one first depressed part, and this is outer The opposite direction covered towards body is provided with one second depressed part, and gasket seal is provided between the enclosing cover and the body.

3. fuel tank Lock structure as claimed in claim 1, it is characterised in that the actuation mechanism, which comprises at least, has a swing arm and by this The jacking block that swing arm drives, when the jacking block clip is in the lock body, the tank cap lock is locking-in state, and the oil cap is located at the close stance Put；When the jacking block is driven by the swing arm and when releasing the clip to the lock body, the tank cap lock is released state, and the oil cap is moved to The open position.

4. fuel tank Lock structure as claimed in claim 3, it is characterised in that the swing arm of the swing arm drives center to the pendulum of the swing arm The distance of Bei Zhi dot center is more than the distance of jacking block drive center to the swing arm branch dot center of the jacking block.

5. fuel tank Lock structure as claimed in claim 1, it is characterised in that the body includes accommodation space, the accommodation space To install the ventilating mechanism, the ventilating mechanism, which comprises at least, has one first spring, one to be supported by the spring force of first spring The first valve body, a second spring, second valve body supported by the spring force of second spring, and a locking closure is by the ventilator Structure is limited in the accommodation space, and second valve body is provided with perforation, and the locking closure sets a passage, connected below the accommodation space One first path, first path include a through hole, the occluded segment of the connection through hole, a passage for housing the spheroid, with And the breach located at the passage；The body is provided with open to atmosphere alternate path.

6. fuel tank Lock structure as claimed in claim 5, it is characterised in that the alternate path, which comprises at least, has one to be located at the body On first passage and second channel, the second channel is a downwardly open column-like paths.

7. fuel tank Lock structure as claimed in claim 5, it is characterised in that the occluded segment is arc-shaped.