CN105620895A

CN105620895A - Fuel tank

Info

Publication number: CN105620895A
Application number: CN201610099556.XA
Authority: CN
Inventors: 王辉
Original assignee: Hai'an Xin Kaifu Machinery Science And Technology Ltd
Current assignee: Hai'an Xin Kaifu Machinery Science And Technology Ltd
Priority date: 2016-02-23
Filing date: 2016-02-23
Publication date: 2016-06-01

Abstract

The invention relates to a fuel tank. The fuel tank is a guiding-out component comprising an inner cover, a pump, a first pressing piece, a lantern ring and an outer cover, wherein the inner cover is pivoted on a recess of the fuel tank; the pump is arranged on the inner cover; the first pressing piece is arranged on the top of the pump; the lantern ring downwards pushes the first pressing piece in a backstop manner; and the outer cover sleeves the inner cover and the lantern ring. The fuel tank is characterized in that the outer cover consists of a body and a shell, the body sleeves the inner cover, the shell sleeves the lantern ring, and a one-way transmission mechanism by which the inner cover is screwed down on the fuel tank is arranged between the inner cover and the body of the outer cover; and when in a free state, the one-way transmission mechanism rotates anticlockwise under the condition that pivoting of the inner cover on the fuel tank is finished, and the shell of the outer cover can be disconnected, so that the lantern ring can be detached after the shell is disconnected. By the guiding-out component, a function of preventing improper use can be improved. Fuel with the guiding-out component can be safely and definitely provided for users.

Description

Fuel tank

Technical field

The present invention is about passing through the derivation parts that side Pu makes the oil body in fuel tank derive.

Background technology

Tradition possesses with the fuel tank at side Pu: oil tank body, be sealingly disposed in the end of described oil tank body and have Bang Pu mechanism for oil body receive oil tank body inside is released enclosing cover and be arranged on described enclosing cover upper end help Pu portion with in the fuel tank helping Pu, releasably it is embedded in and covers thus forbidding the action of Bang Pu mechanism, press down on after helping Pu portion to make oil body derive after in an idle state the collar being dismantled, the described collar can be once again set up, therefore deposit and be likely to the problem of the oil body extraction etc. in fuel tank in an idle state.

Summary of the invention

The present invention provides the derivation parts of idle state and with the fuel tank deriving parts. The derivation parts of the structure that can prevent the collar of idle state from dismantling particularly are proposed.

The derivation parts leading-out portion part of the present invention, it is served as reasons: pivot is combined in the inner cap of the recess of fuel tank, the side Pu covered in being arranged on, it is arranged on the first pressing part at side top, Pu, backstop presses down on the collar of the first pressing part, constitute with the enclosing cover entangling inner cap and the collar, it is characterized in that: enclosing cover is made up of the body entangling inner cap and the shells entangling the collar, between inner cap and the body of enclosing cover, it is arranged on the one-way driving mechanism of inner cap, described one-way driving mechanism is set as, and when inner cap pivot on fuel tank closes termination, anti-clockwise rotation is free state, the shells of enclosing cover can disconnect, be formed as the dismountable structure of the collar after described shells disconnects, wherein, enclosing cover can make the first pressing part cover in passing through and covering, enclosing cover is the cylinder that the first pressing part can be made to pass through, the shells of enclosing cover is formed the first pressing part by peristome, circumferentially it is provided with, between the shells and body of enclosing cover, the disconnecting unit that shells can be disconnected, bending sheet is set in the side, direction that screws of peristome, when covering in enclosing cover is arranged on, is formed as the enclosing cover structure in the side of inner cap, wherein, when inner cap is arranged on fuel tank, it is configured to engage with tank side and becomes the locking part of the locking mechanism of inverse clock impedance, set one-way driving mechanism as: make inner cap to setting direction rotate time torque ratio to form the moment of torsion of locking mechanism side big, and inner cap to disassembly direction rotate time the unlock moment of torsion of side of torque ratio little, wherein, enclosing cover is provided with card article in inner peripheral bottom, wherein, inner cap has the protuberance extending to the first pressing part bottom, and the first pressing part has the embeddable sunk area of protuberance of aforementioned inner cap, wherein, the first pressing part inserts and is arranged on the top of side Pu axis body, forms casting lug thereon in axis body top ring-type, the first pressing part engaging mechanism being formed with inserting, wherein, the upper end of inner cap protuberance is provided with the falling stop part preventing collar displacement.

The present invention, through possessing said structure, creates following distinctive effect.

The derivation parts of the present invention can improve the function preventing improper use. By being provided with the fluid safety of described derivation parts and user can be supplied to definitely. The fuel tank deriving parts is installed, unused state can be maintained before Kaifeng, behind Kaifeng, be difficult to be mixed into foreign body, and residual quantity can be made to reach fewization.

Accompanying drawing explanation

Fig. 1 is the figure representing the unused state deriving parts being provided with an embodiment on fuel tank.

Fig. 2 is the figure of the fuel tank representing an embodiment.

Fig. 3 is the figure of the inner cap representing an embodiment.

Fig. 4 represents the side view at the side Pu of an embodiment.

Fig. 5 is the figure of the push-down head representing an embodiment.

Fig. 6 represents the top view of the baffle ring of an embodiment.

Fig. 7 is the figure of the enclosing cover representing an embodiment.

Fig. 8 represent an embodiment side Pu on be provided with inner cap state by a part excise after side view.

Fig. 9 represent an embodiment side Pu on be provided with push-down head state by a part excise after side view.

Figure 10 represent an embodiment side Pu on be provided with baffle ring state by a part excise after side view.

Figure 11 represent an embodiment side Pu on be provided with enclosing cover state by a part excise after side view.

Detailed description of the invention

In FIG, representing derives the closed tank 11 of idle state (sealing state, so-called initial condition) after parts 1 are arranged on fuel tank 2 by one embodiment of the invention, is made up of: the side Pu 4 be arranged on the inner cap 3 on fuel tank 2, inserting and being arranged on inner cap 3, the first pressing part 5 arranged in the upper end at side Pu 4, the collar 6 that backstop presses down on the first pressing part 5 and the enclosing cover 7 that entangles the collar 6 and be entrenched in outward on inner cap 3. At this, deriving parts 1 is that so-called liquid injecting type derives parts, for instance for passing through the oil body L such as the effect at side Pu 4 fuel tank derived. The lower end at side Pu 4 is provided with the not shown oil pipe extending to fuel tank bottom surface.

The bottle that fuel tank 2 is such as formed for the material harder with synthetic resin, glass etc., as shown in Figure 2, have in upper side to there being the axial bottle body 21 as oil tank body having the close cylindrical shape in the end, the upper end of described bottle body 21, by undergauge the recess 22 arranging cylindrical shape, is provided with oral area 23 in the upper end of described recess 22. The outer peripheral face 22a of recess 22 is formed male screw thread 24. On the outer peripheral face 22a of the downside of described male screw thread 24, circumferentially it is provided with the locking rib 25 of radially projecting ring-type at described outer peripheral face 22a. On the upside being positioned at described locking rib 25,25A is provided with paired card stator 26.

Inner cap 3 is such as formed by materials soft compared with fuel tank 2 such as polypropylene, as it is shown on figure 3, have: be provided centrally with the circular upper surface portion 31 as top wall portion of circular intercommunicating pore 31a and entangling the periphery of upper surface portion 31 and the week facial 32 as surrounding wall portion of the cylindrical shape prominent to side. in the upside of the inner peripheral 32a in described week facial 32, it is provided with the female screw thread 33 as female spiral that can close with male screw thread 24 pivot of setting on the outer peripheral face 22a at the recess 22 of fuel tank 2. on the inner peripheral 32a of the upside of described female screw thread 33, the circumferencial direction along inner peripheral 32a is provided with the locking recess 34 of section groove-like. and then on the inner peripheral 32a of the downside of described female screw thread 33, card fixed gear 36 is set, when the oral area 23 of fuel tank 2 arranges inner cap 3, constitute the locking mechanism 35 that the locking piece 26 arranged on the recess 22 of described fuel tank 2 is locking. the locking piece 26 of described card fixed gear 36 and fuel tank 2 constitutes locking mechanism 35. in addition, as shown in Fig. 3 (a), card fixed gear 36 is arranged along the circumferencial direction of the inner peripheral 32a in week facial 32, in the face of on the male screw thread 24 of fuel tank 2, pivot closes the direction of the female screw thread 33 of inner cap 3, the face of such as, the side rotating clockwise direction in Fig. 3 (a) is formed and gentle prominent pushes away the inclined plane 36a pulling out shape, and in the face of releasing the direction closed to pivot on the male screw thread 24 of fuel tank 2, the face of such as, the side rotating counterclockwise direction in Fig. 3 (a) forms the plural gear teeth 36c of vertical 36b, circumferencial direction along inner peripheral 32a arranges composition in the way of being equally spaced. therefore, these gear teeth 36c sets with such as side formula, female screw thread 33 pivot making inner cap 3 is combined on the male screw thread 24 of fuel tank 2, make engaging moment of torsion A less than releasing moment of torsion B, engaging moment of torsion A is the centre slice 26a of the locking piece 26 making described fuel tank 2 locking piece 26 when engaging with any gear teeth 36c moment of torsion crossing required for the inclined plane 36a of described gear teeth 36c, releasing the vertical 36b rotation inner cap 3 that moment of torsion B is opposing these gear teeth 36c prevents pintle hook lock from closing to release inverse clock, the centre slice 26a of the locking piece 26 of fuel tank 2 crosses the vertical 36b of described gear teeth 36c, and required moment of torsion can be dismantled from the oral area 23 of fuel tank 2.

In addition, the upside of the outer peripheral face 32b in the week facial 32 of inner cap 3 is by undergauge, the centre position of the width of described outer peripheral face 32b forms bulb 32c, in the upper end by the outer peripheral face 32b of undergauge of the upside of described bulb 32c, it is provided with composition and one of tightens in one-way driving mechanism 37 square inner cover side gear part 38 as the inner cap tightening-dismantle prevention unit. As it is shown on figure 3, described inner cover side gear part 38 is arranged along the circumferencial direction of outer peripheral face 32b. In the example in the figures, inclined plane 38c and vertical 38b is in the circumferentially continuous triangular waveform being formed with most continuous. The snap-latch surface joint formation gear engaging of described vertical 38c and the component in the setting of enclosing cover side. In the present embodiment, rotating clockwise direction is that pivot closes direction, and in the Fig. 3 (c) overlooked, the ascent direction of inclination is formed and rotates counterclockwise. Described inner cover side gear part engages with being arranged on the outer component covered, and engages through to the operation screwing direction of enclosing cover, and through rotating operation round about, engaging is released from, and forms inner cap and tighten the structure of one-way driving mechanism 37.

In the upside of inner cover side gear part 38, it is provided with the cylindric reducing diameter part 32d of the inner side being positioned at described inner cover side gear part, the upside of described reducing diameter part 32d is provided with upper surface portion 31. Described upper surface portion 31 is provided with the protuberance 39 entangling the periphery from the intercommunicating pore 31a axis body highlighted upward. Described protuberance 39 was formed through undergauge by week facial 32, and the outer peripheral face 39a and inner peripheral 39b of described protuberance 39 is each freely shown in Fig. 3 (c), and forming radial section is polygon, for instance radial section is octagon. And then in the upper end of outer peripheral face 39a of protuberance 39 and bottom, circumferentially it is annularly disposed falling stop part 39c respectively, these falling stops part 39c is separately positioned on the position that the size interval of the approximately axial width with the collar 6 is opened, and is set to from the outer peripheral face 39a of protuberance 39 to radially projecting mode.

Side Pu 4 is be used for via the oil body L of the oil pipe transfer component derived in fuel tank 2, as shown in Figure 4, a part for the upper end side of the axis body 42 as interior pipe to be made to highlight from the upper end of the side Pu body 41 as cylinder part and constitute. As shown in Figure 1, described side Pu 4 inserts and is arranged on the intercommunicating pore 31a of inner cap 3, when exerting a force from above through built-in spring mechanism (not shown), can to a side shifting, and make lower end side insert at least some of of axis body 42 in side Pu body 41, even if also upper end side highlights upward from the intercommunicating pore 31a of inner cap 3, arrange with the state that the protuberance 39 by described inner cap 3 entangles. The lower end of side Pu body 41 is provided with the suction pipe (not shown) for the oil pipe shape will derived to the oil body L more noresidue of storage in fuel tank 2, in the upper end side of described side Pu body 41, the radially projecting circular of oriented described side Pu body 41 is set rib 43 is set. Described rib 43 is set, when inner cap 3 being arranged on the upside at side Pu 4, being inserted into the week of described inner cap 3 in face 32, being engaging on the locking recess 34 of described inner cap 3 and make it keep fixed position. Additionally, the part that the upper end from side Pu body 41 of axis body 42 is prominent, being formed as the cylindric shaft-like portion 44 entangled by the protruding cylinder portion of inner cap 3, the upper end side in described shaft-like portion 44 is provided with the cylindric head setting unit 45 less than described shaft-like portion 44 diameter. First pressing part 5 is such as formed by materials such as polypropylene, as it is shown in figure 1, insert the upper end of the axis body 42 being embedded in side Pu 4 in close contact. As it is shown in figure 5, the first pressing part 5 is made up of housing department 51 and nozzle 55.

Housing department 51 has: constitute upper end top wall portion 52, prominent from the periphery of top wall portion 52 to side and constitute housing department 51 side face as the week facial 53 close to cylindric surrounding wall portion. Described week face 53 inner peripheral 53a to form radial section be polygon, such as radial section be octagon, in order to the protuberance 39 of chimeric inner cap 3, limit described protuberance 39 and rotate to circumferencial direction. At this, the protuberance 39 of described week facial 53 and inner cap 3 is configured to such as side formula: because the outer peripheral face 39a respectively radial section octagon of the inner peripheral 53a of these week face 53 and protuberance 39, so when making the first pressing part 5 and inner cap 3 relatively circumferentially rotate, through the power applied to a certain degree, the inner peripheral 53a of these week face 53 and each corner of the outer peripheral face 39a of protuberance 39 can be crossed, the restriction rotated to circumferencial direction can be released.

And, all inner concentric shapes of facial 53 are provided with the cylindric portion 54 that arranges, the described portion 54 that arranges is arranged in the way of the described upper end side arranging a portion 54 is connected with 52a below top wall portion 52. Therefore, the cylindric sunk area 54a arranging oriented side opening between a portion 54 and week face 53 is being set. It is octagon that the outer peripheral face of described sunk area 54a forms radial section, and it is circular that inner peripheral forms radial section.

Additionally, arrange the spray nozzle part 55 of the radially projecting elongated cylindrical in oriented described week facial 53 on the week facial 53 of housing department 51, the top ends of spray nozzle part 55 is provided with the leadout hole 55a opening of circle. Leadout hole 55a connects with the inner side arranging a portion 54 via spray nozzle part 55, will tell to outside peristome from the oil body L of transfer in fuel tank 2 with side Pu 4.

The collar 6 is such as formed by materials such as polypropylene, as it is shown in figure 1, on the protuberance 39 of the inner cap 3 being removably disposed between the first pressing part 5 and the upper surface portion 31 of inner cap 3. Namely the described collar 6 for backstop press down on the first pressing part 3 as the recess lasso pressing down locking, as shown in Figure 6, in order to can be outward chimeric be arranged on protuberance 39, it be polygon, such as radial section is octagon that inner peripheral 61a and outer peripheral face 61b forms radial section respectively. And then, the collar 61 is arranged between the falling stop part 39c of the protuberance 39 of inner cap 3, by the falling stop part 39c on the upside of being positioned at by locking for the upper lateral margin of the collar 61, it is prevented that make the described collar 6 be pulled to top under the state dismantling the first pressing part 5 from the axis body 42 at side Pu 4.

Specifically, it is the octagonal body 61 close to tubular that the collar 6 has a part of radial section expanded, and a part for the periphery of described body 61, by opening, arranges and inserts opening 62 thus being formed close to letter C shape. Described opening 62 of inserting is formed as the shape after being removed on two limits in the radial section octagon of body 61, with the center of body 61 for the angle of the about opening of benchmark 90 ��. And then in the both side edges inserting opening 62, be respectively arranged with by these both side edges to radially projecting guiding rib 63. These guiding ribs 63, when the protuberance 39 of inner cap 3 arranges the collar 6, each guiding rib 63 is by described protuberance 39 pushing tow, make inserting opening 62 elastic deformation more easily and expanding of the collar 6, easily make protuberance 39 chimeric with the body 61 of the described collar 6, simultaneously from described protuberance 39 during detached collar 6, easily making the inserting opening 62 elastic deformation of the collar 6 extend through these guiding ribs 63 of pushing tow, it is easy to dismantle the described collar 6 from protuberance 39.

Enclosing cover is made up of the body covered in covering and the shells entangling the collar. Enclosing cover 7 is such as formed by materials such as polypropylene, it is while keeping the idle state of closed tank 11, in order to prevent the outer original lid restored to described idle state, as shown in Figure 1, inner cap 3 on the oral area 23 being arranged on fuel tank 2 is entangled, it is prevented that the dismounting of the collar 6 arranged on the protuberance 39 of described inner cap 3.

Specifically, enclosing cover 7 is as shown in Figure 7. A () is upward view, (b) is side view, and (c) is top view, and (d) is central longitudinal sectional view, it is illustrated that represent the inner face of private side.

Enclosing cover 7 possesses the lid body 71 close to cylindrical shape on the outer week facial 32 being entrenched in inner cap 3 as body, is provided with the inserting hole 71a opening of the protuberance 39 entangling inner cap 3 in the upside of lid body 71. In addition, on the pars intermedia of the inner peripheral 71c in week face 71b of the surrounding wall portion as the side face constituting lid body 71, the circumferencial direction along inner peripheral 71c is provided with when being entrenched in outside on inner cap 3 the expanding recess 71d of fluid-tight engagement by the bulb 32c pushing tow of described inner cap 3.

Additionally, on the inner peripheral 71c of the upside of expanding recess 71d, the circumferencial direction along described inner peripheral 71c is provided with the enclosing cover side gear component 72 engaged when being entrenched in inner cap 3 outside with the inner cover side gear part 38 of described inner cap 3. Described enclosing cover side gear component 72 is tightened gear part 38 through the inner cover side with inner cap 3 and is formed one-way driving mechanism 37, plays a role screwing direction. As it is shown in fig. 7, the lance tooth gear teeth with vertical formed and the vertical 38b at the interior gear part 38 covering setting abut and form gear snap action. At the described outer gear part covering setting, the circumferencial direction along inner peripheral 71c is provided with the waveform of most triangle formed by inclined plane 72a and vertical 72b. Described triangle be formed as that the top of the gear part from inner cap carries out engaging towards. That is, be formed as vertical 72b and the 38b of inner cap to abut engaging and close direction to pivot and play the structure of strength. Subsidiary one carries, and when releasing the direction rotation enclosing cover that pivot closes, inclined plane 72a contacts with the inclined plane 38a of inner cap, and engaging moment of torsion diminishes, and gear engaging is released from.

That is, enclosing cover side gear component 72, passes through on the week facial 32 being entrenched in inner cap 3 outside the lid body 71 making enclosing cover 7, engages with inner cover side gear part 38, it is prevented that the female screw thread 33 of inner cap 3 closes releasing with the pivot of the male screw thread 24 of fuel tank 2, namely prevents dismounting.

Specifically, the vertical 72b of the gear teeth 72c of the vertical 38b of the gear part 38 of inner cap 3 side and the enclosing cover side gear component 72 of enclosing cover 7 abuts, with such as 50N cm²The engaging moment of torsion C made a concerted effort as gear card engages, and the rotating operation of described enclosing cover 7 makes inner cap 3 rotate, and makes the female screw thread 33 of inner cap 3 carry out pivot conjunction with the male screw thread 24 of fuel tank 2. Relative to this, when rotating enclosing cover 7 to the direction releasing pivot conjunction, the inclined plane 72a of each gear teeth 72c of the inclined plane 38a of each gear teeth 38c of the inner cover side gear part 38 of these inner caps 3 and the enclosing cover side gear component 72 of enclosing cover 7 will not abut engaging, available such as 20N cm²Idling torque D make enclosing cover 7 dally. Additionally, gear teeth 38c and 72c illustrated in Fig. 7 and Fig. 3, although illustrate inclined plane 38a, 72a and vertical 38b, 72b, but the angle of inclination in two faces can be designed with the moment of torsion screwing direction obtaining expectation and setting and reverse moment of torsion.

The strength relationship of the engaging moment of torsion formed is: bigger than the formation power that inner cap is locked from mechanism at the inverse clock that pivot conjunction terminal part is formed, the locking intensity after being formed than inverse clock locking is little. Through so design, rotating enclosing cover operation inner cap, after being arranged on fuel tank recess by derivation parts, even if making enclosing cover inverse clock, inner cap does not also rotate, and deriving parts will not disassemble from fuel tank.

And then, in the upper end of the inner peripheral 71c of the upside of enclosing cover side gear component 72, the circumferencial direction along inner peripheral 71c is provided with the chimeric section portion 73 that the upper edge of the reducing diameter part 32d of inner cap 3 is fitted together to. Additionally, be provided with on the bottom of inner peripheral 71c the week being entrenched in inner cap 3 outside on face 32 time, as with described inner cap 3 week face 32 the card article 74 of holding section that engages of lower ora terminalis. Described card article 74 for when by outer for enclosing cover 7 chimeric be arranged on inner cap 3, it is prevented that described enclosing cover 7 in upper side to the undercut fitting portion pulled out.

Specifically, card article 74 is arranged along the circumferencial direction of the inner peripheral 71c of lid body 71, and upside is formed along vertical 74a radially, and downside is formed as gentle the pushing away of undergauge to side and pulls out shape inclined plane 74b. Additionally, on the inner peripheral 71c of the upside of locking rib 74, be provided with the holding rib 75 of the plural number of the axially projecting elongate along lid body 71. Holding rib 75 carries out crimping with the bulb 32 of inner cap and plays the effect of fluid-tight engagement. These holding ribs 75 are arranged in the way of being equally spaced at the circumferencial direction of inner peripheral 71c, arrange the axial centre position of described inner peripheral 71c always.

On the other hand, in the upside of the lid body 71 of enclosing cover 7, extend using same heart shaped and be provided with as the coating cylinder portion 76 close to cylindric shells in the way of highlighting. Described coating cylinder portion 76 is by being formed through undergauge in the week facial 32 of lid body 71, by outer for the lid body 71 of enclosing cover 7 chimeric be arranged on the week facial 32 of inner cap 3 time, entangle around the collar 6 arranged on the protuberance 39 of described inner cap 3, to make the described collar 6 will not dismantle from protuberance 39, it is arranged on communicatively on the inserting hole 71a of lid body 71. And, on week face 76b in described coating cylinder portion 76, it is formed with the part in described week face 76b at the longitudinally cut patent part 76c as peristome. Described patent part 76c, when enclosing cover 7 being arranged on inner cap 3 from the side being provided with the first pressing part 5, the spray nozzle part 55 preventing described first pressing part 5 contacts with coating cylinder portion 76 and can not pass through, and is formed as the width dimensions of about 2 times of outside dimension of the spray nozzle part 55 of described first pressing part 5. That is: described patent part 76c, when the spray nozzle part 55 of the first pressing part 5 is inserted into, when the lower end side making enclosing cover 7 is inserted from spray nozzle part 55 side of the first pressing part 5, avoid passing through the spray nozzle part 55 of described first pressing part 5 and contacting with the week face 76a in coating cylinder portion 76, described enclosing cover 7 can be arranged on inner cap 3.

Additionally, patent part 76c relative to paired side band part 76d in, be positioned at the gear part 38 of exterior and interior cover and gear part 72 carry out being provided with bending sheet 77 on the side band part 76d of side that engages. The top that described bending sheet 77 is side band part 76d after radially bending again bending extend to outside and the hands of lamellar that formed seizes sheet. That is: bending sheet 77 for pass through described bending sheet 77 is seized and seize to radial direction draw while seize to circumferencial direction and to draw, in order to make coating cylinder portion 76 can the easily operating portion of disconnection from the lid body 71 of enclosing cover 7, it is destroyed in a state of use. Furthermore, it is being provided with between the lid body 71 of side of bending sheet 77 and coating cylinder portion 76, is being provided with the slit 77a of the side band part 76d continuous print channel-shaped of the side being provided with bending sheet 77 with patent part 76c. Slit 77a, when being held by bending sheet 77 and be coated to cylinder portion 76 from disconnection lid body 71, easily can bend between these lid bodies 71 and coating cylinder portion 76. Additionally, between lid body 71 and coating cylinder portion 76, form the disconnecting unit 77b of continuous print pin hole etc. from described slit. Make the power that bending sheet 77 bends laterally successfully be transferred to disconnecting unit 77b from slit 77a, can easily disconnect along the circumferencial direction in coating cylinder portion 76 from described lid body 71. Additionally, slit it is not absolutely required to, it is also possible to be only disconnecting unit.

The snap-fit relationship deriving the idle state after parts 1 are arranged on fuel tank 2 for the present embodiment illustrates. When idle state (initial condition), as it is shown in figure 1, the oral area 23 at fuel tank 2 is inserted with the lower end side helping Pu body 41 helping Pu 4, the upper end side-line of described side Pu body 41 inserts from the lower end side of inner cap 3 and arranges. Now, the rib 43 that arranges of described side Pu body 41 is engaged in the locking recess 34 of inner cap 3 and position is fixed, simultaneously, the shaft-like portion 44 of the axis body 42 prominent from the upper end of described side Pu body 41 inserts the protuberance 39 of inner cap 3 and is entangled, and forms the state that the head setting unit 45 of described axis body 42 highlights upward from the protuberance 39 of inner cap 3. Additionally, inner cap 3 week face 32 female screw thread 33 closed by pivot and be arranged on the male screw thread 24 of fuel tank 2, the centre slice 26a of each locking piece 26 of described fuel tank 2 is locking and locked by locking mechanism 35 by any gear teeth 36c of the card fixed gear 36 of inner cap 3. And, head setting unit 45 and the first pressing part 5 of the axis body 42 at side Pu 4 to arrange a portion 54 chimeric, the upper end of described axis body 42 is provided with the first pressing part 5. Now, described first pressing part 5 week face 53 and the sunk area 54a that arranges between a portion 54 insert the upper end side of protuberance 39 of inner cap 3 and a lateral sliding can be gone up.

And, between the falling stop part 39c of the protuberance 39 of inner cap 3, it being provided with the collar 6, backstop presses down on the first pressing part 3. The described collar 6 is arranged so that the state inserting the protuberance 39 of inner cap 3 in the body 61 of the described collar 6 is chimeric. Then, the outer lid body 71 being provided with enclosing cover 7 on the week facial 32 of inner cap 3 chimericly. Now, the upper edge of the chimeric reducing diameter part 32d having inner cap 3 in the chimeric section portion 73 of described enclosing cover 71, the simultaneously expanding recess 71d fluid-tight engagement of the bulb 32c of inner cap 3 and described enclosing cover 7, and then the card article 74 of enclosing cover 7 engages with the lower ora terminalis in the week facial 32 of inner cap 3, to keep preventing described inner cap 3 from coming off. Additionally, the inclined plane 72a of each gear teeth 72c of the gear part 72 of the inclined plane 38a of each gear teeth 38c of the gear part 38 of inner cap 3 and enclosing cover 7 is engaged engaging in the way of abutting. And, coating cylinder portion 76 through described enclosing cover 7, the collar 6 arranged on the protuberance 39 of inner cap 3 is entangled along the direction close to circumference, the described collar 6 is entangled can not dismantle, insert, in the patent part 76c in the coating cylinder portion 76 of described enclosing cover 7, the spray nozzle part 55 being provided with the first pressing part 5 simultaneously.

The assemble method deriving parts for the present embodiment further describes. As shown in Figure 8, outside the upper end side at the side Pu 4 shown in Fig. 4 in the way of the lower end side of chimeric inner cap 3, the upper end side making side Pu 4 is inserted in the intercommunicating pore 31a of described inner cap 3, on the locking recess 34 of described inner cap 3 by the side Pu body 41 at side Pu 4 to arrange rib 43 locking with fixed position. Now, the shaft-like portion 44 of the axis body 42 at side Pu 4 is circumferentially entangled by the protuberance 39 of described inner cap 3, forms the state that the head setting unit 45 of described axis body 42 highlights upward from the protuberance 39 of inner cap 3. From described state, as it is shown in figure 9, by chimeric first pressing part 5 in the head setting unit 45 of the axis body 42 at side Pu 4 a portion 54 is set in the way of, the position in the upper end side alignment axis body insertion hole 56 of the axis body 42 at described side Pu 4 presses the first pressing part 5. Now, the axis body 42 at described side Pu 4 is resisted the elastic force of built-in spring mechanism and is entered in the protuberance 39 of inner cap 3, the protuberance 39 of described inner cap 3 is entrenched in the sunk area 54a of the first pressing part 5 and is guided slidably, and then, described first pressing part 5 is pressed against the upper end of axis body 42, until the head setting unit 45 of described axis body 42 is arranged on the position arranged in a portion 54 of the first pressing part 5 with being embedded conjunction, the first pressing part 5 is set in the upper end of described axis body 42. Hereafter, carry out pressing down on the situations such as the operation of described first pressing part 5, the derived quantity of the oil body L at confirmation side Pu 4 and leakage.

And, do not carrying out pressing down on the state of the operation of the first pressing part 5, namely the protuberance 39 of inner cap 3 is almost not embedded under the state in the sunk area 54a of the first pressing part 5, as shown in Figure 10, make the collar 6 chimeric from the transverse direction of the protuberance 39 of described inner cap 3, the collar 6 is set between the falling stop part 39c of described protuberance 39, in order to can not carry out pressing down on the operation of described first pressing part 5. Now, the falling stop part 39c of the upside arranged on the protuberance 39 through inner cap 3 is formed, it is prevented that the collar 6 pulls to the state of top. In addition, make axial axially along protuberance 39 of the described collar 6, when abutting with protuberance 39 when between the paired guiding rib 63 of the described collar 6, press on protuberance 39 through by the described collar 6, there is elastic deformation in the body 61 of the described collar 6, insert opening 62 to be expanded, be fitted together in the body 61 of the described collar 6 and protuberance 39 is set.

The spray nozzle part 55 of the first pressing part 5 enters in the patent part 76c in the coating cylinder portion 76 of enclosing cover 7 from described state, the contacting of week face 76b in order to avoid spray nozzle part 55 and the coating cylinder portion 76 of described first pressing part 5, the patent part 76c making enclosing cover 7 becomes with predetermined angle such as 22.5 �� to the state of lopsidedness, makes the lower end side of the lid body 71 of described enclosing cover 7 be fitted together to from the spray nozzle part 55 of the first pressing part 5. Now, as shown in Figure 1, with in the patent part 76c in the chimeric coating cylinder portion 76 entering described enclosing cover 7 of spray nozzle part 55 of the first pressing part 5, it is entrenched in the mode on the week facial 32 of inner cap 3 outside the lid body 71 of described enclosing cover 7 simultaneously, make described enclosing cover 7 slowly rotate and keep vertical while, make to be entrenched in outside the lid body 71 of described enclosing cover 7 on the week facial 32 of inner cap 3, make the card article 74 of described enclosing cover 7 engage with the lower ora terminalis in the week facial 32 of inner cap 3 so that it is to keep preventing from coming off and covering simultaneously. Now, the upper edge of the reducing diameter part 32d of chimeric inner cap 3 in the chimeric section portion 73 of described enclosing cover 71, the bulb 32c of inner cap 3 is engaging on the expanding recess 71d of described enclosing cover 7 in close contact, and then the inclined plane 72a engagement engaging of each gear teeth 72c of the gear part 72 of the inclined plane 38a of each gear teeth 38c of the gear part 38 of described inner cap 3 and enclosing cover 7. Additionally, the collar 6 being arranged on the protuberance 39 of inner cap 3 is entangled along close to circumferencial direction by the coating cylinder portion 76 of described enclosing cover 7, entangle into and make the described collar 6 not dismantle.

And then from described state, the oral area 23 being accommodated with the fuel tank 2 of the oil body L of scheduled volume to filling is inserted into the lower end side helping Pu body 41 at side Pu 4, the recess 22 of described fuel tank 2 rotates enclosing cover 7 after outer chimeric inner cap 3, female screw thread 33 pivot making described inner cap 3 is combined on the male screw thread 24 of fuel tank 2, the centre slice 26a of each locking piece 26 making fuel tank 2 engages with any gear teeth 36c of the card fixed gear 36 of described inner cap 3, lock with locking mechanism 35, form the closed tank 11 of the idle state shown in Fig. 1. Now, through the one-way driving mechanism 37 being made up of the gear part 38 of inner cap 3 and the gear part 72 of enclosing cover 7, formation can not rotate via the direction that enclosing cover 7 closes to the pivot of the male screw thread 24 of the female screw thread 33 and fuel tank 2 that release inner cap 3, it is prevented that it dismantles from the oral area 23 of the fuel tank 2 of described inner cap 3.

The using method deriving parts 1 of the present embodiment is illustrated. Through the operation pressing down on the first pressing part 5, when the derivation parts 1 of the closed tank 11 of the idle state shown in Fig. 1 are formed the common use state of oil body L that can derive ormal weight from the leadout hole 55a of described first pressing part 5 respectively, with finger etc., the bending sheet 77 of enclosing cover 7 is seized, described bending sheet 77 is pulled open from the lid body 71 of enclosing cover 7, the coating cylinder portion 76 making described enclosing cover 7 disconnects along disconnecting unit 77b at circumferencial direction, is removed in described coating cylinder portion 76 from the lid body 71 of enclosing cover 7. Now, through the coating cylinder portion 76 removing enclosing cover 7 from lid body 71, the state that the collar 6 can be dismantled in radial direction by formation from the protuberance 39 of inner cap 3, and through the direction at the described collar 6 of dismounting to guiding rib 63 pushing tow etc., there is elastic deformation in the body 61 making the described collar 6, inserting opening 62 to be expanded, the described collar 6 can be dismantled from the protuberance 39 of inner cap 3. Result, through dismantling the described collar 6 from the protuberance 39 of inner cap 3, and formed and can carry out pressing down on the state of the operation of the first pressing part 5, through the operation pressing down on described first pressing part 5, become and by the action that side Pu 4 is upwards inhaled, the oil body L of storage in fuel tank 2 can be derived the state used respectively with scheduled volume from the leadout hole 55a of the first pressing part 5.

Hereby imagination passes through the first pressing part 5 pull-out etc. from the derivation parts 1 of the closed tank 11 of idle state, and described first pressing part 5 is dismantled by force from the upper end of the axis body 42 at side Pu 4, the situation of oil body L is taken out in order to the upper end from the axis body 42 being provided with described first pressing part 5. But, in this case, after first pressing part 5 is dismantled from the upper end of axis body 42, when being intended to by force described first pressing part 5 is pressed against the upper end of axis body 42 again and be configured, described axis body 42 is resisted the elastic force of built-in spring mechanism and is entered in the protuberance 39 of inner cap 3, and pressing axis body 42 is to before the position of upper end that described first pressing part 5 can be arranged on axis body 42. And then, when the first pressing part 5 is dismantled from the upper end of axis body 42, falling stop part 39c through the upside arranged on the protuberance 39 of inner cap 3, can not make on described protuberance 39 arrange the collar 6 pull to above, so the first pressing part 5 can not be once again set up in the upper end of axis body 42 after the described collar 6 pulls out, and carry out pressing down on the state of described first pressing part 5 operation.

The inner cap 3 deriving parts 1 of the closed tank 11 being intended to the state that would sit idle for is dismantled from the oral area 23 of fuel tank 2, and when taking out the oil body L in fuel tank 2 from the oral area 23 of described fuel tank 2, it is provided with enclosing cover 7 because outer on described inner cap 3 chimericly, so via described enclosing cover 7, must rotating in the direction making the inner cap 3 male screw thread 24 pivot to the female screw thread 33 with fuel tank 2 that release inner cap 3 close.

The present embodiment system makes the collar 6 preventing from pressing down on the operation of the first pressing part 5 deriving parts 1 be arranged on the protuberance 39 of inner cap 3, the described collar 6 is entangled by the coating cylinder portion 76 of enclosing cover 7, by the state on the week facial 32 being entrenched in inner cap 3 outside the lid body 71 of described enclosing cover 7, through described enclosing cover 7 card article 74 and inner cap 3 week face 32 the engaging of lower ora terminalis and keep preventing from coming off, and, through the one-way driving mechanism 37 formed between inner cap 3 and enclosing cover 7, and prevent inner cap 3 from dismantling from the oral area 23 of fuel tank 2. Therefore, in an idle state, enclosing cover 7 can not be dismantled from inner cap 3, and remove through the coating cylinder portion 76 to major general's enclosing cover 7, form the state of detachable collar 6, if not the described collar 6 from dismounting the protuberance 39 of inner cap 3, then the first pressing part 5 can not be pressed down on operation, so that the oil body L of storage in fuel tank 2 is derived from the leadout hole 55a of the first pressing part 5. Now, the coating cylinder portion 76 of enclosing cover 7 is removed, when forming the state of detachable collar 6, because can not recover to the idle state before the coating cylinder portion 76 of described enclosing cover 7 being removed etc., the dismounting of the collar 6 of idle state and the dismounting of inner cap 3 can be prevented definitely, extraction oil body from the fuel tank 2 of idle state can be prevented definitely, can positively keep idle state.

Particularly, the one-way driving mechanism 37 formed between inner cap 3 and enclosing cover 7, when making inner cap 3 rotate to the direction of the female screw thread 33 of the conjunction inner cap 3 of pivot on the male screw thread 24 of fuel tank 2 via enclosing cover 7, the vertical 36b of each gear teeth 36c of the gear part 38 of inner cap 3 can abut with the vertical 72b of each gear teeth 72c of the gear part 72 of enclosing cover 7, form the state that both each gear teeth carries out engaging, described enclosing cover 7 can be made to rotate together with inner cap 3, pivot more definitely can be carried out on the recess 22 of fuel tank 2 and close the operation that inner cap 3 is set. On the other hand, when described one-way driving mechanism 37 makes inner cap 3 rotate to the direction releasing pivot on the male screw thread 24 of fuel tank 2 and closing the female screw thread 33 of inner cap 3 through enclosing cover 7, the inclined plane 38a of each gear teeth 38c of the gear part 38 of inner cap 3 can abut with the inclined plane 72a of each gear teeth 72c of the gear part 72 of enclosing cover 7, form the state that these each gear teeth do not carry out engaging, make enclosing cover 7 dally. Therefore, inner cap 3 can not be dismantled from the oral area 23 of fuel tank 2 through enclosing cover 7, not by as described in enclosing cover 7 from dismounting inner cap 3 etc., the pivot of the female screw thread 33 and the male screw thread 24 of fuel tank 2 that can release described inner cap 3 closes, it is impossible to by described inner cap 3 from dismounting the oral area 23 of fuel tank 2.

In addition, would sit idle for the enclosing cover 7 of the closed tank 11 of state as collar cover coating cylinder portion 76 along disconnecting unit 77b disconnect after, because the idle state disconnected before described enclosing cover 7 can not be returned to, so the closed tank 11 of idle state can be kept more definitely, once can prevent from definitely resetting into idle state for after use state.

Further, the card fixed gear 36 utilizing the locking piece 26 and inner cap 3 arranged on the recess 22 of fuel tank 2 forms locking mechanism 35, when making the direction rotation of female screw thread 33 that enclosing cover 7 closes inner cap 3 to pivot on the male screw thread 23 of fuel tank 2, the engaging moment of torsion C that one-way driving mechanism 37 between enclosing cover 7 and inner cap 3 produces, the engaging moment of torsion A of locking mechanism 35 when system is set as the female screw thread 33 closing inner cap 3 than pivot on the male screw thread 23 of fuel tank 2 is big, the non-engagement moment of torsion of one-way driving mechanism 37 is then set as that the releasing moment of torsion B that the pivot making the female screw thread 33 of inner cap 3 on the male screw thread 24 of fuel tank 2 than the described locking mechanism 35 of opposing closes when releasing is little. therefore, through balance, can prevent the oral area 23 from fuel tank 2 from dismantling inner cap 3 more definitely.

Additionally, forming radial section respectively through the outer peripheral face 39a of protuberance 39 and all inner peripheral 53a of facial 53 of the first pressing part 5 that make inner cap 3 is octagon, may specify that the setting of the first pressing part 5 is towards position. therefore, pass through the setting specifying described first pressing part 5 towards position, fuel tank 2 can be made to have directivity, the front and back etc. of fuel tank 2 can be determined, can determine that the position pasting label etc. on described fuel tank 2, aesthetic property time simultaneously by plural number fuel tank 2 arrangement etc., it is possible to easily make all of first pressing part 5 simultaneously towards same direction, when can improve these fuel tank 2 arrangements etc. and, simultaneously by the outer peripheral face 39a by the protuberance 39 of these inner caps 3, and first pressing part 5 week face 53 inner peripheral 53a to form radial section respectively be octagon, chimeric through protuberance 39 and sunk area 54a, the first pressing part 5 can not be made when only applying small strength circumferentially to rotate, only when applying large force to a certain degree, protuberance 39 and the chimeric of sunk area 54a just can depart from, and make the first pressing part 5 circumferentially rotate, therefore the setting direction of the first pressing part 5 is adjusted in the lower end of the side Pu body 41 at side Pu 4 through the position of the suction pipe corresponding to arranging, can make more definitely to derive to the oil body L noresidue of storage in fuel tank 2, the ease of use deriving parts 1 of use state can be improved. additionally, it is octagon that the inner peripheral 61a of the body 61 by making the collar 6 forms radial section, during by chimeric for the described collar 6 protuberance 39 being arranged on inner cap 3, it may be determined that circumferential locations, can prevent the described collar 6 from rotating to circumferencial direction. in addition, as the outer peripheral face 39a of protuberance 39 of inner cap 3 and the first pressing part 5 week face 53 inner peripheral 53a, it is preferably and forms the polygon that radial section is more than hexagon, so that when applying predetermined power, the chimeric disengagement of protuberance 39 and sunk area 54a, makes the first pressing part 5 circumferentially to rotate.

Furthermore, through the falling stop part 39c arranged on the protuberance 39 of inner cap 3, can prevent from being pulled to by the collar 6 state that the upper end of axis body 42 from side Pu 4 dismantles the first pressing part 5 top, therefore, even if for the state after dismantling the first pressing part 5 from the upper end of the axis body 42 at described side Pu 4, due to enclosing cover 7 coating cylinder portion 76 the effect that covers and can not by the collar 6 from horizontal dismounting, make the collar 6 can not pull to top due to falling stop part 39c, so the first pressing part 5 is dismantled from the upper end of axis body 4, it is once again set up the first pressing part 5 after dismounting lower collar 6, can prevent from definitely pressing down on described first pressing part 5, the idle state of closed tank 11 can be kept more definitely.

In addition, the shaft-like portion 44 of the axis body 42 at side Pu 4 is entangled by protuberance 39, because being provided with the collar 6 on described protuberance 39, so the first pressing part 5 is dismantled from the upper end of axis body 42, from the upper end of described axis body 42 the oil body L of storage in fuel tank 2 carried out after extraction etc. carries out on probation grade, it is intended to when the upper end of described axis body 42 is once again set up the first pressing part 5, the upper end of described axis body 42 enters in the protuberance 39 of inner cap 3, pressing axis body 42 is to before the position of upper end that the first pressing part 5 can be arranged on axis body 42, because the lower end in the week of the first pressing part 5 facial 53 can with the upper-end contact of the body 61 of the collar 6, and can not further press down on described first pressing part 5, therefore can not described first pressing part 5 be once again set up in the upper end of axis body 42, so can not again recover to idle state. now, when the first pressing part 5 is dismantled from the upper end of axis body 42, the falling stop part 39c of the upside owing to arranging on the protuberance 39 of inner cap 3, and can not make on described protuberance 39 arrange the collar 6 pull to above, the first pressing part 5 it is once again set up in the upper end of axis body 42, it is impossible to formed and can carry out pressing down on the mode of operation of described first pressing part 5 after making the described collar 6 pull to top. therefore, the idle state of closed tank 11 can be kept more definitely, can prevent from definitely restoring to dismounting the first pressing part 5 idle state after taking out oil body L in fuel tank 2.

And then, the outer peripheral face 45a of the head setting unit 45 of the axis body 42 at side Pu 4 is wholely set the casting lug thereon 45b of ring-type, prevent from coming off with the Qian He arranging a portion 54 of described casting lug thereon 45b holding head setting unit 45 and the first pressing part 5 and concurrently form the structure of sealing, by such design, with other components such as o-ring are set in the head setting unit 45 of axis body 42 with compared with keeping preventing the structure that comes off, number of parts can be reduced, structure can be simplified, when in the head setting unit 45 of axis body 42, combination arranges the first pressing part 5 simultaneously, because casting lug thereon 45a or deform through cutting or abrasion etc., once by the first pressing part 5 from after dismounting described head setting unit 45, described first pressing part 5 is once again set up when head setting unit 45, make described first pressing part 5 be difficult to mat casting lug thereon 45a to keep preventing from coming off, can prevent from more definitely passing through and described first pressing part 5 be dismantled from the upper end of axis body 42 and tries out the oil body L in fuel tank 2. and, because side Pu can not freely be loaded and unloaded, so side Pu can not be dismantled be mixed into foreign body.

In addition, through making the upside entangling the upper edge in week face 71b of the lid body 71 in the outside of described enclosing cover 7 as upper mould (not shown), the downside making the upper edge in described week face 71b is counterdie (not shown), making the inner side of described enclosing cover 7 is can the reducing die (not shown) of undergauge, utilize the combination amounting to 3 moulds can be configured to described enclosing cover 7, the mould structure that can make described enclosing cover 7 is simple, can be easily manufactured described enclosing cover 7.

Claims

1. derive parts for one kind, it is served as reasons: pivot is combined in the inner cap of the recess of fuel tank, the side Pu covered in being arranged on, it is arranged on the first pressing part at side top, Pu, backstop presses down on the collar of the first pressing part, constitute with the enclosing cover entangling inner cap and the collar, it is characterized in that: enclosing cover is made up of the body entangling inner cap and the shells entangling the collar, between inner cap and the body of enclosing cover, it is arranged on the one-way driving mechanism of inner cap, described one-way driving mechanism is set as, and when inner cap pivot on fuel tank closes termination, anti-clockwise rotation is free state, the shells of enclosing cover can disconnect, be formed as the dismountable structure of the collar after described shells disconnects,

Wherein, enclosing cover can make the first pressing part cover in passing through and covering, enclosing cover is the cylinder that the first pressing part can be made to pass through, the shells of enclosing cover is formed the first pressing part by peristome, circumferentially it is provided with, between the shells and body of enclosing cover, the disconnecting unit that shells can be disconnected, bending sheet is set in the side, direction that screws of peristome, when covering in enclosing cover is arranged on, is formed as the enclosing cover structure in the side of inner cap;

Wherein, when inner cap is arranged on fuel tank, it is configured to engage with tank side and becomes the locking part of the locking mechanism of inverse clock impedance, set one-way driving mechanism as: make inner cap to setting direction rotate time torque ratio to form the moment of torsion of locking mechanism side big, and inner cap to disassembly direction rotate time the unlock moment of torsion of side of torque ratio little;

Wherein, enclosing cover is provided with card article in inner peripheral bottom;

Wherein, inner cap has the protuberance extending to the first pressing part bottom, and the first pressing part has the embeddable sunk area of protuberance of aforementioned inner cap;

Wherein, the first pressing part inserts and is arranged on the top of side Pu axis body, forms casting lug thereon in axis body top ring-type, the first pressing part engaging mechanism being formed with inserting;

Wherein, the upper end of inner cap protuberance is provided with the falling stop part preventing collar displacement.