CN205468941U - Oily device of built -in password theftproof of oil tank port - Google Patents

Abstract

Oily device of built -in password theftproof of oil tank port includes: lock tube, an oil feed section of thick bamboo of putting into the lock tube and password dish coil the shutoff head that central oil filler point carries out the shutoff to the password for open the lockaid gun of password dish and arrange the cyclic annular catch spring at the inboard top of oil tank port in. The utility model discloses a patent " an oily device of built -in password theftproof of oil tank port ", the improvement of application number for going on on the basis of " 201520741168.8 " declared before belong to the oily device of oil tank theftproof equally. The device installs inside the general oil tank port of freight train, add unique lock tube, an oil feed section of thick bamboo and the design of password dish, the switch of anti -theft device can carry out under dark and any adverse circumstances, and refuel also need not not the switch lock to the oil tank at every turn, the password change is convenient, the operation is thus simple, therefore, the clothes hanger is strong in practicability, the device is installed behind oil tank port extremely firmly, collect and prevent stealing outward and preventing from stealing in an organic whole, can prevent that lawless persons explains password and malicious damage, prevent pick -proof protecting against shock soon, play fine guard action to the fuel in the oil tank.

Description

Reservoir port built-in cipher anti theft oil device

Technical field

This utility model belongs to Security for fuel tank oil tech field, is specifically related to reservoir port built-in cipher anti theft oil tech.

Background technology

On some lorries, without arranging antitheft device of oil tank, lawless person can make a desperate move, and makes oil stolen steathily Infringement, this can bring the biggest economic loss to car owner.Security device for fuel tank in the market is very simple, is usually Device for preventing oil-stealing is installed on reservoir port, is then carried out the switch of device for preventing oil-stealing by key.This antitheft device of oil tank valency Lattice are cheap, design is simple, are mostly installed on truck oil tank mouth, and security performance is the highest, and refuel every time and be required for passing through key Spoon carries out the switch of anti-theft device, is easily destroyed by lawless person, thus causes unnecessary loss to car owner.Owing to these fill Putting the protection mainly carried out from reservoir port, therefore security performance is the highest, and the protected effect played is the lowest.

Summary of the invention

This utility model is precisely in order to the reservoir port built-in cipher anti theft oil device that overcomes drawbacks described above and design.

This utility model is in the patent " a kind of reservoir port built-in cipher anti theft oil device " declared before, Application No. The improvement carried out on the basis of " 201520741168.8 ".This utility model also belongs to Security for fuel tank oil tech, but is mainly Device is arranged on inside the reservoir port of truck oil tank common-use size, adds distinctive combination disk and the design of oil-feed cylinder, and operate Simpler, practicality is higher, and oil can play more preferable protective effect.

This utility model is achieved by the following technical solution:

Reservoir port built-in cipher anti theft oil device, including: lock tube, the oil-feed cylinder put in lock tube and combination disk, close for opening The lock remover of code-disc；

It is provided with becket in oil-feed cylinder bottom inside, becket is provided with filter screen, be provided with spring A in filter screen upper end, in oil-feed There are an annular boss and a steam vent in cylinder top；The lock tube inwall that lock tube is fixed in overcoat by an overcoat and one is constituted, Have screwed hole A on lock tube inwall, be provided with snap ring in lock tube inwall bottom inside, be positioned at outside screwed hole A at lock tube inwall and set There are metal derby, screwed hole A through lock tube inwall and metal derby；Combination disk includes connecting the disk cover of an annulus, set with a cylinder It is located at the cipher ring in disk cover cylinder, the round pin being placed in cipher ring and is located at cipher ring lower end and the capel chimeric with cipher ring, Disk cover is provided with open keyhole；

This utility model is characterised by, this device also includes the block head blocking the oil filler point of combination disk and is placed in reservoir port The ring-type catch spring of inside top；Wherein,

Cipher ring lower surface and capel stud with permanent magnet respectively；Combination disk disk cover offers chute, and at the cylinder of disk cover Body bottom is provided with perforate；Be provided with protruding B in any one open keyhole adjacent place of disk cover, and inside disk cover with protruding B phase Corresponding position is provided with protruding C；Cipher ring offers pin hole, and is provided with between any two pin hole for protruding C The arcuate groove A slided；Offer the screwed hole C that can connect pin hole at cipher ring lateral surface, screwed hole C sequentially puts into steel Pearl, spring B and screw；Groove breach A is offered in cipher ring outer lower portion；Cannelure B is offered in cipher ring lower surface； The arc raised line chimeric with cannelure B it is provided with in capel upper surface；Outside capel, it is provided with the groove closed together with groove breach A lack Mouth B and the screwed hole D corresponding with perforate；Round pin is placed in pin hole；Round pin is made up of round pin head and round pin set, round pin head and The chimeric fastening of the caulking groove that round pin set is put by the embedding head on round pin head and round pin；A termination it is provided with in lock remover one end；At round pin Head is provided with the slotted eye chimeric with the termination of lock remover；Round pin rostral wall is provided with the semi-spherical grooves coordinated with steel ball；Justifying Guide bottom face is provided with and is rotated and can be connected with cannelure B with the arcuate groove C, this arcuate groove C of circle by round pin with cannelure B Or stagger.

In this utility model, it is provided with at lock tube overcoat top end face and allows the collar of fuel tank cap screwing hermetic；Sleeve side wall offers and locks Set inner thread hole A corresponding, in order to be screwed into the hole of screw；It is provided with at chute two-end-point in lock tube inner wall middle Between slide protruding A；Offering on the annular boss on oil-feed cylinder top can be by the breach of protruding A.

In this utility model, block head is made up of plug and stifled dish, and plug is placed in oil filler point, and stifled dish offers and open keyhole The opening coincideing with protruding B；Plug bottom is provided with an annular groove that can place jump ring, is fixed on by block head by jump ring In combination disk.

The open keyhole of disk cover upper surface and corresponding pin hole at least three；The groove breach A of cipher ring outer lower portion And the chute offered on disk cover at least；The perforate of disk cover bottom and corresponding with perforate, be located at the screw thread outside capel Hole D at least has two；The arc raised line of capel upper surface at least three；Round pin at least three；Respectively under cipher ring On end face and capel, the permanent magnet of edge is at least the permanent magnet under, and lock body lockup state, on cipher ring lower surface and capel Mutually staggering, end face magnetic pole is identical in opposite directions；Outside lock tube on set the hole offered and corresponding with hole, run through in lock tube The screwed hole A of wall and metal derby is at least one；The protruding A of lock tube inner wall middle is at least one.

In this utility model, the breach offered on the annular boss of oil-feed cylinder top outer at least one；On described spring A is Portion be cone bottom be cylindrical deformed spring, upper cone body is that the vertex of a cone is airtight, and longitudinal surface is tight shape, be positioned over into From top to bottom can not be by oil pumping pipeline after oil cylinder.The semi-spherical grooves offered on round pin rostral wall is at least round pin head uniform external diameter The N-1 of N decile, semi-spherical grooves is evenly distributed on N-1 Along ent therein, and the value of N is at least 3.

In this utility model, the termination of lock remover and the slotted eye chimeric with termination be positive three cylinders and more than；Embedding head and the most embedding Close caulking groove be the most hexahedro cylinder and more than；It is provided with a password in round pin set top side wall and labelling is set.

In this utility model, semi-spherical grooves position of halving on round pin rostral wall and embedding head or M-1 face of caulking groove cylinder face number One_to_one corresponding, wherein M value at least 6.Above nonseptate N-1 semi-spherical grooves, the most sequentially it is provided with The numeral numbering to " N-2 " is started from " 0 ".

In this utility model, under device lockup state, arc raised line one end distance round pin of capel upper surface overlaps side at least The diameter of individual open keyhole.At lock tube and lock tube inwall crack top, sealing rubber ring is installed；In the hole that sleeve side wall is offered The screw being screwed into is interior hexagonal pointed screw.

The installation method of reservoir port built-in cipher anti theft oil device, step is:

1, ring-type catch spring is placed in reservoir port inside top；

2, the metal derby on the lock tube installing sealing rubber ring is directed at bayonet socket corresponding with metal derby on reservoir port, allows in lock tube Wall is chimeric in falling into reservoir port；

3, being screwed into interior hexagonal pointed screw, cause reservoir port edge deformation and enter the hole put outside lock tube, the most ring-type catch spring can block Live screw to stop lock tube to be pried open by violence；

4, the oil-feed cylinder with filter screen and deformed spring is put in lock tube, due to the annulus bottom lock tube inner wall and oil-feed cylinder The boss of top outer, can make oil-feed cylinder stable on the annulus of lock tube inwall；

5, combination disk is made to be in unlocking condition with lock remover correspondence password, now disk cover chute opening part, cipher ring lower outside Groove breach and capel lateral grooves breach are in same position, by the protruding A in the middle of notch alignment lock tube inner wall, by close Code-disc falls in lock tube, rotates disk cover, allows chute end contact projection A side, and at this moment open keyhole, round pin are just corresponding overlaps；

6, with lock remover irregular rotation round pin, now the cannelure of the arcuate groove of round pin set bottom end face and cipher ring lower surface is not On same circular arc, can block the arc raised line of capel upper surface, lock body is locked；

7, fuel tank cap is built.

The beneficial effects of the utility model:

1, round pin draw-in groove on-off principle: after combination disk puts into lock tube, be rotated in place, rotate round pin with lock remover, due under round pin The arcuate groove of end face can be connected or stagger with the cannelure B of cipher ring lower surface by the rotation of round pin, causes capel upper surface Arc raised line by or block, thus reach lock body switching effect.

2, decryption principle is prevented: in a latched condition, owing to round pin side is prior with arc raised line one end of capel upper surface Design is at least spaced the distance of an open keyhole diameter, so when rotating disk cover to arc raised line one end and round pin one side contacts, Corresponding open keyhole and pin hole can stagger, thus cannot decryption.

3, variation change password principle: if desired for Change Password, as long as taking combination disk apart, overlaps round pin head and round pin and separates, weight New corresponding password arranges the numeral numbering of labelling and round pin rostral face, i.e. reaches the purpose of Change Password.

4, feel obtains password principle: be opened in the number of semi-spherical grooves in round pin rostral face all the time than the isodisperse of round pin head external diameter Few one, so when rotating round pin with lock remover, empty scope can make lock remover have a bigger rotation radian, this Big rotates " 0 " that radian distal point is set in round pin head numeral numbering, rotates clockwise or counterclockwise afterwards, according to steel ball Due to spring act on beat between semi-spherical grooves produce pause and transition in rhythm or melody sense and resistance be sequentially defined as numeral numbering in " 1,2,3, 4 ... ", password combination starting point is from the beginning of the open keyhole of protruding B adjacent place；This password obtains mode, and driver just can be made black Under dark and any adverse circumstances, device is switched.

5, oil-feed cylinder protection Design principle: the spring being placed in oil-feed cylinder be designed as top be cone bottom be cylinder, and cone Pushing up airtight, its longitudinal surface is the deformed spring of tight type, can not be impacted by oil pumping pipeline, anti-violence, be made spring from top to bottom More it is stable in oil-feed cylinder；Oil-feed cylinder bottom metal ring arranges filter screen, can reach to prevent solid foreign materials from entering fuel tank Purpose.

6, permanent magnet principle it is bumped into: for reducing owing to vehicle motion causes shock unnecessary between device feature and abrasion, close It is bumped into permanent magnet on code ring lower surface and capel, whole device can be made more to tend towards stability.

7, anti-outer, from stealing design principle: opening jump ring, take off block head from combination disk, the oil filler point at combination disk center is with regard to energy Driver is facilitated at any time fuel tank to be refueled.As long as car owner's keeping unlocking cipher, self-theft-proof can be realized；Owing to combination disk card is lived in Oil cylinder, and the deformed spring in oil-feed cylinder cannot allow oil pumping pipeline enter fuel tank, i.e. realizes preventing outer robber.

8, other beneficial effects: install ring-type catch spring in reservoir port inside top and have and lock tube inner thread on set outside lock tube The hole that hole is corresponding, is fixed on lock tube on reservoir port by interior hexagonal pointed screw, and reservoir port edge can be made to shoot because of pointed screw The position of deformation enters hole, and ring-type catch spring can block again screw, and such lock tube is fixed in reservoir port will be more stable firm, Anti-rotation pick-proof.As car owner worries that lawless person carries out water filling and steals oil fuel tank, combination disk installs block head.

Accompanying drawing explanation

Fig. 1 is this utility model oil-feed barrel structure schematic diagram；

Fig. 2 is this utility model lock tube structural representation；

Fig. 3 is this utility model combination disk structural representation；

Fig. 4 is this utility model disk cover structural representation；

Fig. 5 is the upward view of Fig. 4；

Fig. 6 is this utility model cipher ring structural representation；

Fig. 7 is the cut-away view of A in Fig. 6；

Fig. 8 is the upward view of Fig. 6；

Fig. 9 is this utility model capel structural representation；

Figure 10 is this utility model round pin structural representation；

Figure 11 is this utility model round pin header structure schematic diagram；

Figure 12 is this utility model round pin nested structure schematic diagram；

Figure 13 is this utility model lock remover structural representation；

Figure 14 is this utility model plugging head structure schematic diagram；

Figure 15 is sectional view of the present utility model.

Detailed description of the invention

Reservoir port built-in cipher anti theft oil device, including: lock tube 2, the oil-feed cylinder 1 put in lock tube 2 and combination disk 3, for Open the lock remover 4 of combination disk；

It is provided with becket 11 in oil-feed cylinder 1 bottom inside, becket is provided with filter screen 12, be provided with spring A13 in filter screen upper end, An annular boss 14 and a steam vent is had on oil-feed cylinder top；Lock tube 2 is fixed in overcoat by an overcoat 22 and one Lock tube inwall 21 constitute, lock tube inwall has screwed hole A25, is provided with snap ring 23 in lock tube inwall bottom inside, lock Set inwall is positioned at outside screwed hole A25 and is provided with metal derby 28, screwed hole A25 through lock tube inwall and metal derby；Combination disk 3 Including connecting the disk cover 31 of an annulus, the cipher ring 32 being set in disk cover 31 cylinder with a cylinder, being placed in cipher ring 32 Round pin 34 and be located at cipher ring lower end and the capel 33 chimeric with cipher ring, disk cover 31 is provided with open keyhole 311.

This utility model is characterised by, this device also includes the block head 5 blocking the oil filler point 35 of combination disk 3 and is placed in The ring-type catch spring of reservoir port inside top；Wherein,

Cipher ring 32 lower surface and capel 33 stud with permanent magnet 329 respectively；Combination disk 3 disk cover 31 offers chute 314, and it is provided with perforate 315 in the cylinder bottom of disk cover 31；It is provided with convex in any one open keyhole 311 adjacent place of disk cover 31 Play B313, and be provided with protruding C312 with protruding position corresponding for B313 inside disk cover 31；Cipher ring 32 is offered There is pin hole 321, and between any two pin hole 321, be provided with the arcuate groove A324 slided for protruding C312；At password Ring 32 lateral surface offers the screwed hole C325 that can connect pin hole 321, sequentially puts into steel ball 328, bullet in screwed hole C325 Spring B327 and screw 326；Groove breach A323 is offered in cipher ring 32 outer lower portion；Offer in cipher ring 32 lower surface There is cannelure B322；It is provided with the arc raised line 332 chimeric with cannelure B322 in capel 33 upper surface；Outside capel 33 It is provided with the groove breach B331 and the screwed hole D333 corresponding with perforate 315 closed together with groove breach A323；Round pin 34 is placed on In pin hole 321；Round pin 34 is overlapped 342 by round pin head 341 and round pin and forms, and round pin head 341 and round pin set 342 are by round pin head On 341 embedding 347 and the chimeric fastening of caulking groove 348 on round pin set 342；It is provided with a termination 41 in lock remover 4 one end； It is provided with the slotted eye 346 chimeric with the termination 41 of lock remover 4 at round pin head 341 top；Round pin head 341 sidewall is provided with and steel The semi-spherical grooves 344 that pearl 328 coordinates；Overlap 342 bottom faces at round pin to be provided with cannelure B322 with round arcuate groove C343, This arcuate groove C343 is rotated by round pin 34 can be connected with cannelure B322 or stagger.

In this utility model, it is provided with at lock tube 2 overcoat 22 top end face and allows the collar 26 of fuel tank cap screwing hermetic；Overcoat 22 sidewall Offer corresponding with lock tube inwall 21 screwed hole A25, in order to be screwed into the hole 211 of screw；Inside lock tube inwall 21 Middle is provided with between chute 314 two-end-point the protruding A24 slided；The annular boss on oil-feed cylinder 1 top offers and can lead to Cross the breach 15 of protruding A24；Block head 5 is made up of plug 52 and stifled dish 53, and plug 52 is placed in oil filler point 35, stifled dish The opening coincideing with open keyhole 311 and protruding B313 is offered on 53；Plug 52 bottom is provided with an annular that can place jump ring Groove 51, is fixed on block head 5 in combination disk 3 by jump ring.

In this utility model, the open keyhole 311 of disk cover 31 upper surface and corresponding pin hole 321 at least three；Close The chute 314 at least one offered on the groove breach A323 of code ring 32 outer lower portion and disk cover 31；Disk cover 31 bottom Perforate 315 and corresponding with perforate 315, be located at the screwed hole D333 outside capel 33 at least two；On capel 33 The arc raised line 332 of end face at least three；Round pin 34 at least three；Respectively on cipher ring 32 lower surface and capel 33 Under permanent magnet 329 at least, and lock body lockup state of edge, the permanent magnet phase on cipher ring 32 lower surface and capel 33 Staggering mutually, end face magnetic pole is identical in opposite directions；The hole 211 offered on lock tube 2 overcoat 22 and corresponding with hole 211, pass through Lead to and be at least one in the screwed hole A25 of lock tube inwall 21 and metal derby 28；The protruding A24 of middle inside lock tube inwall 21 At least one.

The breach 15 offered on the annular boss 14 of oil-feed cylinder 1 top outer at least one；Described spring A13 is that top is Cone bottom is cylindrical deformed spring, and upper cone body is that the vertex of a cone is airtight, and longitudinal surface is tight shape, is positioned over oil-feed cylinder From top to bottom can not be by oil pumping pipeline after 1.The semi-spherical grooves 344 at least round pin head 341 offered on round pin head 341 sidewall The N-1 of uniform external diameter N decile, semi-spherical grooves 344 is evenly distributed on N-1 Along ent therein, and the value of N is at least 3。

In this utility model, the termination 41 of lock remover 4 and the slotted eye 346 chimeric with termination 41 be positive three cylinders and more than； Described embedding 347 and caulking groove 348 chimeric therewith be the most hexahedro cylinder and more than；Overlap 342 top side wall at round pin and be provided with one Password arranges labelling 345.The semi-spherical grooves 344 position of halving on round pin head 341 sidewall and embedding 347 or caulking groove 348 post M-1 face one_to_one corresponding of dignity number, wherein M value at least 6.

Above nonseptate N-1 semi-spherical grooves 344, the most sequentially it is provided with and starts to " N-2 " from " 0 " Numeral numbering.Under device lockup state, arc raised line 332 one end distance round pin of capel 33 upper surface overlaps 342 sides extremely The diameter of a few open keyhole 311.At lock tube 2 and lock tube inwall 21 crack top, sealing rubber ring is installed；At overcoat 22 The screw being screwed in the hole 211 that sidewall is offered is interior hexagonal pointed screw.

The installation method of reservoir port built-in cipher anti theft oil device, step is:

1, ring-type catch spring is placed in reservoir port inside top；

2, the metal derby 28 on the lock tube installing sealing rubber ring is directed at bayonet socket corresponding with metal derby on reservoir port, allows lock Set inwall is chimeric in falling into reservoir port；

3, being screwed into interior hexagonal pointed screw, cause reservoir port edge deformation and enter the hole put outside lock tube, the most ring-type catch spring can block Live screw to stop lock tube to be pried open by violence；

4, the oil-feed cylinder with filter screen and deformed spring is put in lock tube, due to the annulus bottom lock tube inner wall and oil-feed cylinder The boss of top outer, can make oil-feed cylinder stable on the annulus of lock tube inwall；

5, combination disk is made to be in unlocking condition with lock remover correspondence password, now disk cover chute opening part, cipher ring lower outside Groove breach and capel lateral grooves breach are in same position, by the protruding A24 in the middle of notch alignment lock tube inner wall, and will Combination disk falls in lock tube, rotates disk cover, allows chute end contact projection A side, at this moment open keyhole, round pin just corresponding weight Close；

6, with lock remover irregular rotation round pin, now the cannelure of the arcuate groove of round pin set bottom end face and cipher ring lower surface is not On same circular arc, can block the arc raised line of capel upper surface, lock body is locked；

7, fuel tank cap is built.

See Fig. 1-Figure 15, with termination and the slotted eye chimeric with lock remover termination of lock remover be the most hexahedro cylinder, embedding head and embedding with it As a example by the caulking groove closed is the most hexahedro cylinder, then the semi-spherical grooves set on round pin rostral wall has 5.

During design, wherein 5 perpendicular 1 a pair of 5 semi-spherical grooves that round pin rostral wall sets and the embedding head of the most hexahedro cylinder Should be related to；Then 5 semi-spherical grooves from a termination sequentially (clockwise or counterclockwise) numbering 04 as the password of this round pin The range of choice；It is exactly the password of now round pin in the numeral corresponding to the labelling that round pin set sidewall top sets.Again because of embedding head It is the most chimeric with caulking groove, so cipher change gets up more convenient.

Why in the case of embedding head and the caulking groove chimeric with it are the most hexahedro cylinder, set 5 semi-spherical grooves, be because using When lock remover is unblanked, empty scope can make lock remover have a bigger rotation radian, first finds the rotation radian that this is big Distal point, then rotates round pin according to the order (clockwise or counterclockwise) set before, and steel ball is due to the effect of spring The pause and transition in rhythm or melody sense and the resistance that produce when beating between circular trough can find the password pre-set.As set in advance on a round pin Password " 3 ", the numeral " 3 " on the labelling that round pin puts this moment just corresponding round pin head, operational approach is: the clockwise or inverse time Pin rotates round pin, finds and rotates the distal point that radian is maximum, and this distal point is digital " 0 ", carries out the rotation of round pin the most again, Sensation steel ball is beated three times and can be untied the password of round pin at this.So, when embedding head and the caulking groove chimeric with it are positive N face cylinder Time, the number of the semi-spherical grooves that round pin rostral wall sets should be N-1 mutually, but the value of N can not be the least, minimum here Value takes 6.

Claims (9)

1. reservoir port built-in cipher anti theft oil device, including: lock tube (2), the oil-feed cylinder (1) put in lock tube (2) and close Code-disc (3), for opening the lock remover (4) of combination disk；

It is provided with spring A (13) in oil-feed cylinder (1) inner side；Lock tube (2) is fixed in overcoat by an overcoat (22) and one Lock tube inwall (21) constitute, lock tube inwall has screwed hole A (25), is positioned at screwed hole A (25) outward at lock tube inwall Side is provided with metal derby (28)；Combination disk (3) includes connecting the disk cover (31) of an annulus with a cylinder, being set in disk cover (31) Cipher ring (32), the round pin (34) being placed in cipher ring (32) in cylinder and be located at cipher ring lower end and chimeric with cipher ring Capel (33), disk cover (31) is provided with open keyhole (311)；

It is characterized in that, this device also includes the block head (5) that the oil filler point (35) to combination disk (3) blocks；Wherein,

Combination disk (3) disk cover (31) offers chute (314), and is provided with perforate (315) in disk cover (31) cylinder bottom； It is provided with protruding B (313) in any one open keyhole (311) adjacent place of disk cover (31), and is provided with in disk cover (31) inner side Protruding C (312)；Cipher ring (32) offers pin hole (321), and sets between any two pin hole (321) There is the arcuate groove A (324) slided for protruding C (312)；Offer at cipher ring (32) lateral surface and can connect pin hole (321) Screwed hole C (325)；Groove breach A (323) is offered in cipher ring (32) outer lower portion；Under cipher ring (32) End face offers cannelure B (322)；The arc raised line (332) chimeric with cannelure B (322) it is provided with in capel (33) upper surface； Groove breach B (331) closed together with groove breach A (323) and corresponding with perforate (315) it is provided with in capel (33) outside Screwed hole D (333)；Round pin (34) is placed in pin hole (321)；Round pin (34) is by round pin head (341) and round pin Set (342) composition, is provided with cannelure B (322) with round arcuate groove C (343) at round pin set (342) bottom face；

The protruding A (24) slided it is provided with between chute (314) two-end-point in middle, lock tube inwall (21) inner side；

Offering on the annular boss (14) that oil-feed cylinder (1) top sets can be by the breach (15) of protruding A (24).

Reservoir port the most according to claim 1 built-in cipher anti theft oil device, it is characterised in that screwed hole C (325) In sequentially put into steel ball (328), spring B (327) and screw (326)；Protruding C (312) is located at and protruding B (313) Corresponding position；Cipher ring (32) lower surface and capel (33) stud with permanent magnet (329) respectively；This device also wraps Include the ring-type catch spring being placed in reservoir port inside top；

The open keyhole (311) of disk cover (31) upper surface and corresponding pin hole (321) at least three；Cipher ring (32) chute (314) at least offered on groove breach A (323) of outer lower portion and disk cover (31)；Disk cover (31) bottom perforate (315) and corresponding with perforate (315), be located at the screwed hole D (333) in capel (33) outside At least there are two；The arc raised line (332) of capel (33) upper surface at least three；Round pin (34) at least three； Respectively at the permanent magnet (329) at least of the upper edge in cipher ring (32) lower surface and capel (33), and lock body lockup state Under, the permanent magnet on cipher ring (32) lower surface and capel (33) mutually staggers, and end face magnetic pole is identical in opposite directions；Lock tube inwall (21) the protruding A (24) of middle, inner side at least one；It is provided with a steam vent on oil-feed cylinder top；

Block head (5) is made up of plug (52) and stifled dish (53), and plug (52) is placed in oil filler point (35), stifled dish (53) On offer the opening identical with open keyhole (311) and protruding B (313)；Block head (5) is fixed on combination disk by jump ring (3) on；An annular groove (51) that can place jump ring it is provided with in plug (52) bottom.

Reservoir port the most according to claim 2 built-in cipher anti theft oil device, it is characterised in that at lock remover (4) End is provided with a termination (41)；Round pin head (341) and round pin set (342) by the embedding head (347) on round pin head (341) and The chimeric fastening of caulking groove (348) on round pin set (342)；The termination with lock remover (4) it is provided with at round pin head (341) top (41) chimeric slotted eye (346)；Round pin head (341) sidewall is provided with the semi-spherical grooves (344) coordinated with steel ball (328)； Rotate and can connect with cannelure B (322) with the arcuate groove C (343) of circle by round pin (34) with cannelure B (322) Or stagger；

It is provided with at lock tube (2) overcoat (22) top end face and allows the collar (26) of fuel tank cap screwing hermetic；At oil-feed cylinder (1) top On the annular boss (14) in outside the breach (15) offered at least one；Described spring A (13) be top be under cone Portion is cylindrical deformed spring, and upper cone body is that the vertex of a cone is airtight, and longitudinal surface is tight shape, is positioned over oil-feed cylinder (1) afterwards certainly Upper and lower can not be by pipeline of pumping.

Reservoir port the most according to claim 3 built-in cipher anti theft oil device, it is characterised in that in round pin head (341) The semi-spherical grooves (344) offered on sidewall is at least N-1 of round pin head (341) uniform external diameter N decile, semi-spherical grooves (344) Being evenly distributed on N-1 Along ent therein, the value of N is at least 3.

Reservoir port the most according to claim 3 built-in cipher anti theft oil device, it is characterised in that described lock remover (4) Termination (41) and the slotted eye (346) chimeric with termination (41) be positive three cylinders and more than；Described embedding head (347) and Caulking groove (348) chimeric therewith be the most hexahedro cylinder and more than；It is provided with a password in round pin set (342) top side wall to arrange Labelling (345).

Reservoir port the most according to claim 3 built-in cipher anti theft oil device, it is characterised in that semi-spherical grooves (344) Position of halving on round pin head (341) sidewall is corresponding with M-1 face of embedding head (347) or caulking groove (348) cylinder face number, Wherein M value at least 6.

Reservoir port the most according to claim 4 built-in cipher anti theft oil device, it is characterised in that at nonseptate N-1 Individual semi-spherical grooves (344) top, is the most sequentially provided with and starts the numeral numbering to " N-2 " from " 0 ".

Reservoir port the most according to claim 1 built-in cipher anti theft oil device, it is characterised in that under device lockup state, Arc raised line (332) one end distance at least one open keyhole of round pin set (342) side (311) of capel (33) upper surface Diameter.

Reservoir port the most according to claim 1 built-in cipher anti theft oil device, it is characterised in that at lock tube (2) and lock Set inwall (21) crack top is provided with sealing rubber ring；Overcoat (22) sidewall offers and lock tube inwall (21) screwed hole A (25) corresponding, in order to be screwed into the hole (211) of interior hexagonal pointed screw；

The hole (211) offered on lock tube (2) overcoat (22) and the screwed hole A (25) corresponding with hole (211) At least one.