TWI551480B - Filterable hydrocarbon lock device to - Google Patents

Description

Filterable device for filtering oil and gas

The present invention relates to a lock device for filtering oil and gas, and more particularly to a lock device for installing a fuel filler nozzle such as a steam tank or a locomotive for closing a fuel filler nozzle so that fuel in the fuel tank does not leak.

Generally, vehicles such as cars or locomotives are equipped with fuel tanks for storing gasoline or diesel fuel. The fuel tanks are provided with a fuel filler nozzle. Gasoline or diesel oil can be added to the fuel tank by a fuel filler nozzle. In addition, a lock device is also provided at the fuel filler nozzle of the fuel tank. The capping device comprises a body fixed around the fueling nozzle, and an oil cap detachably coupled with the seat body, the oil cap is used for sealing the fueling nozzle, so that the fuel in the fuel tank or the material outside the fuel tank is not easily Enter and exit the fuel tank.

The pressure inside the fuel tank will change depending on the environment in which the vehicle is located or the engine. In detail, for example, the vehicle is heated by the sun in the stopped state, and the internal pressure is increased due to the temperature increase. Or when the vehicle is running, the fuel tank will generate negative pressure due to the reduction of internal fuel. The negative pressure will cause suction inside the fuel tank, so the fuel is less likely to flow to the engine, and the engine oil supply is not smooth. To this end, the oil cap is usually provided with a small hole, so that the fuel tank can communicate with the outside of the fuel tank to maintain the balance between the internal pressure of the fuel tank and the external pressure, so that the fuel tank can supply oil to the engine smoothly.

This oil cap with small holes is under normal conditions, and the oil and gas in the fuel tank will continuously The small holes are lost, and when the vehicle falls over, the fuel easily flows out of the small holes of the oil cover, causing a risk of fire.

In addition, the mixed gas mixed with oil and gas in the fuel tank may escape the outer boundary through the small hole, which has a bad influence on environmental protection and human health, and the water vapor or moisture outside the oil cover may enter the oil tank through the small hole.

In order to solve this problem, the present invention provides a lockable device for filtering oil and gas, comprising a body having a space formed inside the seat body, the seat system being fixed at a fuel filler nozzle of the oil tank, an oil cover, and detachable The ground cover is engaged in the space of the seat body, the oil cover includes an upper surface and a lower surface, and the oil cover includes an alcove extending from the upper surface toward the lower surface but spaced apart from the lower surface, the recess has a bottom surface, and the bottom surface forms an installation Space, the oil cover further includes a passage extending from the lower surface to the installation space, a vent hole extending from the bottom surface to the recess and located outside the installation space, a slot formed on the lower surface, and the slot extending from the outer surface of the oil cover to a passage, a gasket, combined with the oil cover and near the lower surface, a valve device installed in the installation space of the oil cover, the valve device includes a first valve and a second valve, the first valve includes a first a second side, the second valve includes a first end surface and a second end surface, the second valve includes a through hole extending from the first end surface to the second end surface, and the valve device further includes a lock covering the installation space The lock cover includes a vent hole communicating with the installation space, the second valve is displaceable between a first position and a second position, and an oil filter is coupled to the vent hole of the oil cover to balance the internal pressure of the oil tank with the outside The first side of the first valve abuts against the second end surface of the second valve to close the perforation, and the second valve is located at the first position, causing the second end surface to abut against the inner surface of the installation space. Sealing the installation space, the first valve is separated from the second end of the second valve when the internal pressure of the fuel tank is less than atmospheric pressure Open perforation, the external air enters the oil tank through the oil and gas filter, the vent hole, the perforation and the installation space through the passage. When the pressure inside the oil tank is greater than the atmospheric pressure, the second valve is displaced to the second position, so that the second end surface is disengaged from the installation. The inner surface of the space, the mixed gas of oil and gas mixed inside the fuel tank enters the installation space through the passage, and then enters the oil and gas filter through the vent hole, and the oil and gas filter filters the oil and gas in the mixed gas, and then releases it to the outside.

This creation utilizes the change of the tank pressure. When the tank is under negative pressure, the suction generated can displace the first valve, so that the air outside the oil cap enters the balance pressure in the tank. When the tank is positive, the thrust is generated. The first and second valves can be pushed at the same time, so that the mixed gas mixed with oil and gas inside the fuel tank can be dissipated to the outside of the oil cap after filtering the oil and gas through the oil filter, in addition to balancing the pressure inside the fuel tank with respect to the outside, the tank can be prevented from being inside the tank The outer boundary of oil and gas is beneficial to environmental protection and human health.

10‧‧‧Locking device

12‧‧‧ valve device

20‧‧‧ body

22‧‧‧ surrounding walls

24‧‧‧ Space

26‧‧‧Band

28‧‧‧ pivot slot

30‧‧‧first opening

32‧‧‧ erection department

34‧‧‧ upper surface

36‧‧‧ lower surface

38‧‧‧Event space

40‧‧‧second opening

41‧‧‧Care Department

42‧‧‧卡合块

44‧‧‧Top block

46‧‧‧ convex

48‧‧‧ Guide slot

50‧‧‧ cover

52‧‧‧Long slot

54‧‧‧actuation

56‧‧‧ first end

58‧‧‧ second end

60‧‧ ‧ lever

62‧‧‧ pivot hole

64‧‧‧ bolt

66‧‧‧Outer cover

68‧‧‧ openings

70‧‧‧Circle

72‧‧‧Snap hole

74‧‧‧ oil cover

76‧‧‧Part I

78‧‧‧Upper surface

79‧‧‧ end face

81‧‧‧Ventinel

82‧‧‧ surrounding walls

83‧‧‧Extended wall

84‧‧‧Part II

86‧‧‧ lower surface

88‧‧ ‧ alcove

89‧‧‧Slot room

90‧‧‧First ring wall

91‧‧‧ surface

92‧‧‧Installation space

93‧‧‧ bottom

94‧‧‧first slot

96‧‧‧second slot

98‧‧‧ third slot

111‧‧‧fourth slot

113‧‧‧ first stage

114‧‧‧ second stage

115‧‧‧ bottom

117‧‧‧ channel

131‧‧‧second ring wall

133‧‧‧ activity slot

135‧‧ ‧ gap

137‧‧‧Positioning column

139‧‧‧ channel

140‧‧‧Slots

141‧‧‧through hole

143‧‧‧ Blocking section

145‧‧‧plugs

151‧‧‧ pivot arm

153‧‧‧Connecting end

155‧‧‧ pivot end

156‧‧‧ pivot hole

157‧‧‧ Seal

159‧‧‧ Sockets

160‧‧‧ slots

171‧‧‧Flange

173‧‧‧ sealing surface

175‧‧ ‧ spring

177‧‧‧shims

191‧‧‧Positioning holes

193‧‧‧Keyhole

195‧‧‧ screws

197‧‧‧First spring

199‧‧‧shims

211‧‧‧bond hole

212‧‧‧Circle wall

213‧‧‧first valve

215‧‧‧ first side

217‧‧‧ second side

219‧‧‧Bump

231‧‧‧Second valve

233‧‧‧ first end face

235‧‧‧second end face

237‧‧‧ binding column

239‧‧‧Perforation

251‧‧‧shims

253‧‧‧Combination hole

254‧‧‧ ring wall

255‧‧‧Second spring

257‧‧‧Seal ring

259‧‧‧Lock cover

271‧‧‧ upper end

273‧‧‧ lower end

275‧‧‧ ring wall

276‧‧‧End face

277‧‧ ‧ room

278‧‧‧vents

279‧‧‧ Cover

280‧‧‧ Groove

291‧‧‧ surrounding walls

293‧‧‧ lower surface

297‧‧‧Lock block

298‧‧‧ pivot

299‧‧‧ inner end

311‧‧‧Outside

313‧‧‧ 容容

315‧‧‧ convex

317‧‧‧Flexible components

319‧‧‧ Fuel nozzle

331‧‧‧ tank passage

333‧‧‧Sealing gasket

335‧‧‧Part 1

337‧‧‧Part II

351‧‧‧ oil and gas filter

Fig. 1 is a perspective exploded perspective view of the lock cap device of the first embodiment of the present invention.

Fig. 2 is a partially exploded perspective view of the oil cap of Fig. 1.

Fig. 3 is a perspective assembled view of the oil cap of Fig. 1.

Figure 4 is a cross-sectional view taken along line 4-4 of Figure 3.

Fig. 4A is a cross-sectional view taken along line 4A-4A of Fig. 3.

Fig. 4B is a cross-sectional view taken along line 4B-4B of Fig. 3.

Fig. 5 is a state diagram after the first valve is displaced when a negative pressure is generated in the oil tank in the state of Fig. 4.

Figure 6 is a cross-sectional view taken along line 6-6 of Figure 5.

Figure 7 is the first and second valve positions when a positive pressure is generated in the fuel tank in the state of Figure 4. The first state diagram after the move.

Fig. 7A is a second state diagram after the first and second valves are displaced when a positive pressure is generated in the fuel tank in the state of Fig. 4.

Fig. 8 is a view showing a state in which the lock block is opened and the oil cover is pivotally opened after the actuator is rotated.

Fig. 9 is a view showing a state in which the plug member blocks the through hole after the lock device is turned over when the vehicle is tilted.

Fig. 10 is a perspective exploded perspective view showing the lock cap device of the second embodiment of the present invention.

Figure 11 is a longitudinal cross-sectional view of Figure 10.

Figure 12 is a longitudinal cross-sectional view showing the capping device of the third embodiment of the present invention.

Figure 13 is a longitudinal cross-sectional view showing the lock device of the fourth embodiment of the present invention.

Figure 14 is a longitudinal cross-sectional view showing the capping device of the fifth embodiment of the present invention.

All of the following drawings are merely illustrative of the basic teachings of the present invention, and the extension of the number, position, relationship, and size of the components constituting the preferred embodiment will be explained in the drawings. Post-guided changes are implemented in industry skills. In addition, changes in the exact dimensions and size ratios associated with specific strengths, weights, strengths, and similar requirements are also within the skill of the industry after reading and understanding the teachings of this creation.

In the different figures, the same reference numerals are used to designate the same or similar elements. In addition, please refer to the text such as "first", "second", "third", "upper", "lower", "before", "after" "," "inside", "outside", "end", "part", "segment", "horizontal", "vertical", "inward", "outward", "twist", "length", "Zone", "around", "side", "radial", "axial", and the like are only used to facilitate the construction of the reference figure and are only used to help describe the text. Creation only.

According to the first embodiment of the oil and gas capping device shown in the drawings of Figures 1-9, the capping device 10 of the present invention is mounted on a fuel filler nozzle 319 of a fuel tank, and the capping device 10 includes a The body 20 has a tubular peripheral wall 22 defining a space 24 on the inside of the surrounding wall 22, and a U-shaped pivot portion 26 on the outside of the surrounding wall 22, the pivot portion 26 including a pivot slot 28 And a position of the surrounding wall 22 aligned with the pivot slot 28 forms a first opening 30 of the connecting space 24 and the pivot slot 28, and a mounting portion 32 is disposed outside the peripheral wall 22, and the mounting portion 32 is along the radial direction of the surrounding wall 22 The pivots 26 are spaced apart, and the erecting portion 32 has an upper surface 34 and a lower surface 36. An active space 38 is formed on the lower surface 36 and spaced apart from the upper surface 34. The peripheral wall 22 is disposed at a position aligned with the movable space 38. The space 24 and the second opening 40 of the movable space 38, a side wall of the second opening 40 forms an engaging portion 41, and the outer side of the surrounding wall 22 is disposed between the pivot portion 26 and the mounting portion 32. The erecting portion 32 is used for coupling with one end of a steel cable (as shown by the imaginary line in Fig. 6), the steel cable The other end is combined with the main switch lock of the vehicle (such as a locomotive), causing the main switch lock to pull the cable.

The capping device 10 further includes a top block 44 movably mounted within the movable space 38, the top block 44 having a raised portion 46, the top block 44 further including an arcuate guide channel 48, the raised portion 46 of the top block 44 Leaving toward the second opening 40, and the top block 44 is displaced along the movable space 38 between the retracted position (as shown in Figures 4 to 7) and the extended position (as shown in Figure 8), when the top block 44 is located When the position is retracted, the convex portion 46 is located in the movable space 38, and when the top block 44 is in the extended position, the convex portion is convex. The portion 46 extends into the space 24.

The locking device 10 further includes an L-shaped cover 50 coupled to the lower surface 36 of the mounting portion 32. The cover 50 has a long slot 52 for covering the movable space 38 so that the top block 44 does not disengage. Activity space 38.

The capping device 10 also includes an actuating member 54 pivotally mounted on the cover plate 50. The actuating member 54 includes a first end 56 and a second end 58 and is formed between the first and second ends 56, 58. a pivot hole 62, the first end 56 of the actuating member 54 has a lever 60. The actuating member 54 passes through the pivot hole 62 and locks into the mounting portion 32, so that the actuating member 54 is pivotally coupled to the cover. Outside the board 50 (as shown in Figure 4). And the lever 60 extends into the guide groove 48 through the long slot 52. The long slot 52 provides a space for the lever 60 to move, and the second end 58 of the actuating member 54 provides the end connection of the cable, so when the main switch lock is operated, The steel cable action member 54 is driven such that the lever 60 urges the top block 44 to be displaced between the extended position and the retracted position.

The cover device 10 further includes an outer cover 66. The central portion of the outer cover 66 defines an opening 68. A ring wall 70 is formed under the outer cover 66. The annular wall 70 is provided with two engaging holes 72, and the outer cover 66 is sleeved. The upper end of the peripheral wall 22 of the base 20 is disposed, and the peripheral wall 22 abuts against the inner side of the annular wall 70, and each of the engaging holes 72 is engaged with an engaging block 42 to cause the opening 68 of the outer cover 66 to be aligned with the space 24.

According to a first embodiment of the oil and gas cap locking device shown in the drawings of Figures 1-9, the capping device 10 includes an oil cap 74 removably engaged in the space 24 of the seat body 20, the oil cap 74 Including a first portion 76 and a first portion 7 A small second portion 84, the oil cap 74 further includes an upper surface 78 at the end of the first portion 76, a lower surface 86 at the end of the second portion 84, and a junction of the first portion 76 and the second portion 84. An end face 79, the first portion 76 includes a peripheral wall 82 joining the upper surface 78 and the end surface 79, and the peripheral wall 82 is tapered from the upper surface 78 toward the end surface 79, the first portion 76 also including the upper surface 78 facing downward surface 86. An alcove 88 extending but spaced apart from the end surface 79 includes a venting opening 81 formed in the bottom surface 93 and extending to the end surface 79, causing the venting opening 81 to communicate with the recess 88 and the outer surface of the oil cap 74, and the end surface 79 A tubular extension wall 83 extends toward the lower surface 86 at a position corresponding to the vent hole 81. The vent hole 81 is located in the extension wall 83. The recess 88 and the bottom surface 93 extend toward the upper surface 91 to form a first annular wall. 90 and a second annular wall 131, and the end of the second annular wall 131 is aligned with the upper surface 91. The first annular wall 90 has a surface 91 between the upper surface 78 and the bottom surface 93. The first annular wall 90 An installation space 92 located in the recess 88 is partitioned, and the second ring wall 131 is located at an interval. A movable slot 133 in the chamber 88 spaced from the mounting space 92, the mounting space 92 includes a first slot 94 extending from the surface 91 toward the lower surface 86 but spaced from the lower surface 86, with the first slot 94 facing downwardly A second groove 96 extending from the surface 86 but spaced from the lower surface 86, a third groove 98 extending from the bottom surface of the second groove 96 toward the lower surface 86 but spaced apart from the lower surface 86, and the bottom surface of the third groove 98 a fourth groove 111 extending from the lower surface 86 but spaced apart from the lower surface 86. The fourth groove 111 has a bottom surface 115 between the lower surface 86 and the surface 91. The installation space 92 further includes a third groove 98 and a second groove 98. a first step 113 at the junction of the four slots 111, and a second step 114 formed at the interface between the second slot 96 and the third slot 98. The fourth slot 111 is formed on the inner ring wall and is in the Four slots extending between the first step 113 and the bottom surface 115 The passage 117, furthermore, forms a notch 135 at a position where the peripheral wall 82 is aligned with the movable groove 133, and the oil cover 74 further includes a passage 139 extending from the lower surface 86 to the fourth groove 111, and extending from the peripheral surface of the second portion 84 to a slot 140 of the channel 139, the channel 139 includes a through hole 141 formed on the bottom surface 115 of the fourth slot 111 and having a smaller inner diameter, and the channel 139 further includes a blocking section 143 adjacent to the through hole 141 and having a tapered shape. The lower surface 86 of the oil cover 74 is convexly formed with a positioning post 137. The oil cover 74 further includes four slot chambers 89 formed on the lower surface 86. A pivoting arm 151 has a connecting end 153 coupled to the surrounding wall 82. The pivoting arm 151 has a pivoting end 155 spaced from the connecting end 153, and the pivoting end 155 has a pivot hole 156. A spherical plug 145 is movably disposed in the passage 139 and outside the through hole 141.

The oil cover 74 is received in the space 24, and the pivoting end 155 of the pivoting arm 151 is inserted into the pivot slot 28 by the first opening 30. The oil cover 74 passes through the pivot portion 26 and the pivot hole 156 with a pivot 298. (as shown in Fig. 5), the oil cover 74 can be pivoted relative to the base 20.

The capping device 10 further includes an oil and gas filter 351 coupled to the vent hole 81. The oil filter 351 is internally provided with a filter material such as activated carbon for filtering the oil and gas passing through the oil and gas filter 351.

The locking device 10 further includes a locking block 297 slidably mounted in the movable slot 133 and an elastic member 317. The locking block 297 includes an inner end 299 and an outer end 311, and a convex portion formed on the outer end 311. 315, the inner end 299 of the lock block 297 forms a pocket 313. The convex portion 315 of the lock block 297 faces the notch 135, and the lock block 297 can extend the convex portion 315 into the engagement position outside the surrounding wall 82 in the movable groove 133 (shown in FIGS. 4 to 7) and The inner member is retracted into a disengagement position (shown in Fig. 8) in the peripheral wall 82, and the elastic member 317 is disposed between the movable groove 133 and the end wall of the pocket 313 of the lock block 297, and the elastic member 317 is locked. Block 297 is resiliently positioned in the engaged position.

The capping device 10 also includes a sealing pad 157 coupled to the outside of the oil cap 74 and four springs 175. The gasket 157 has a cylindrical sleeve portion 159 and a flange 171 formed on the outside of the socket portion 159. An end face of the ferrule 159 is formed to provide a slot 160 through which the lower surface 86 of the second portion 84 passes. The flange 171 includes a sealing surface 173. The second portion 84 of the oil cover 74 and the portion near the lower surface 86 are sleeved in the socket portion 159 of the gasket 157, and the passage 139 is located in the slot 160, and the springs 175 are mounted in the slot chamber 89. And one end of each spring 175 biases the gasket 171.

A gasket 177 made of metal is disposed under the gasket 157. The gasket 177 has a positioning hole 191 and a locking hole 193. The spacer 177 is inserted into the second portion 84 of the oil cover 74 through a locking hole 193 and the slot 160 through a screw 195, and the positioning post 137 of the oil cover 74 is engaged with the positioning hole 191, so that the spacer 177 cannot be rotated. Thus, the gasket 157 is positioned between the gasket 177 and the spring 175 such that the gasket 157 can compress the springs 175 along the second portion 84 toward the direction away from the gasket 177, resulting in the oil cap 74 being closed to the grease fitting 319. The effect of the cushioning, and when the oil cap 74 is not closed, the springs 175 bias the gasket 157 against the spacer 177.

A valve device 12 is disposed in the installation space 92 of the oil cover 74. The valve device 12 includes a first valve 213 made of rubber, a second valve 231 made of rubber, a first spring 197, a second spring 255, and metal. Two spacers 199, 251, wherein the first valve 213 includes a first side 215 and a second side 217 facing the first step 113. The first valve 213 further includes a protrusion 219 formed on the second side 217, the first valve 213 It is movably mounted in the third slot 98. The spacer 199 is coupled to the first valve 213. The spacer 199 has a coupling hole 211, and a peripheral wall of the spacer 199 forms a ring wall 212. The protrusion 219 is engaged with the coupling hole 211 of the spacer 199 to make the spacer 199. Located on the second side 217 of the first valve 213, the outer diameter of the annular wall 212 of the spacer 199 is slightly smaller than the inner diameter of the third groove 98, and the annular wall 212 is used to hold the first valve 213 in the third groove. The position of the center axis of 98 is aligned. The first spring 197 is mounted in the fourth slot 111 and has two ends abutting against the bottom surface 115 and the surface of the spacer 199, respectively. The metal spacer 199 has better rigidity, so the first spring 197 is pushed through the bias pad 199. The first valve 213 can prevent the first valve 213 from being deformed by being biased by the first spring 197, so that the first valve 213 has a better sealing effect.

The second valve 231 includes a first end surface 233 and a second end surface 235 facing the second step surface 114. The second valve 231 further includes a through hole 239 extending between the first and second end surfaces 233 and 235. 231 further includes a coupling post 237 formed on the first end surface 233, the second valve 231 is movably mounted in the second slot 96, and the second valve 231 can follow the second slot 96 in the first position and the second position. Between the displacements, when the second valve 231 is in the first position (as shown in FIG. 3), the second end surface 235 is closely attached to the second step surface 114, and when the second valve 231 is in the second position At time (as shown in FIG. 7), the second end surface 235 is spaced apart from the second step surface 114. The spacer 251 is coupled to the second valve 231, and the center of the spacer 251 has a coupling hole 253, and the spacer 251 A peripheral wall forms a ring wall 254, and the binding post 237 of the second valve 231 is fitted in the coupling hole 253 such that the spacer 251 is located on the first end surface 233, and the outer diameter of the ring wall 254 of the spacer 251 is slightly smaller than the second groove. The inner diameter of 96, and the annular wall 254 is used to maintain the second valve 231 in a position aligned with the central axis of the second groove 96.

According to a first embodiment of the oil and gas cap locking device shown in the drawings of Figures 1-9, the capping device 10 further includes a locking cover 259 having an upper end surface 271 and a lower end surface 273, and A ring wall 275 extends from the lower end surface 273 (as shown in FIG. 4). The ring wall 275 has a distal end surface 276. The end surface 276 defines four recesses 280. The inner side of the annular wall 275 is separated from the recess 280. A chamber 277, the lock cover 259 further includes a vent 278 extending from the upper end surface 271 to the chamber 277. The lock cover 259 is coupled to the surface 91 of the first ring wall 90, and a seal ring 257 is disposed between the lower end surface 273 of the lock cover 259 and the first groove 94, and the seal ring 257 is located outside the ring wall 275, so that the lock cover The lower end surface 273 of the 259 is in close contact with the first groove 94 such that the first groove 94 can communicate only with the outside of the lock cover 259 through the vent hole 278, and the ring wall 275 extends into the second groove 96.

The second spring 255 is mounted in the chamber 277 of the lock cover 259, and the elastic force of the second spring 255 is greater than the first spring 197. The two ends of the second spring 255 abut against the surface of the lower end surface 273 and the spacer 251, respectively. The second spring 255 is pressed against the second valve 231 through the metal spacer 251. Since the rigidity of the spacer 251 is better, the second valve 231 can be prevented from being deformed by the second spring 255 being pressed, so that the second valve 231 is second. The step 114 can have a better adhesion effect. In addition, the spring constant of the second spring 255 is greater than that of the first spring 197, so A valve 213 can be supported by the first spring 197 such that the first side 215 abuts against the second end surface 235 of the second valve 231 (as shown in FIG. 4), and the second spring 255 can move the second valve 231 Retentionally held in the first position.

According to a first embodiment of the oil and gas cap locking device shown in the drawings of Figures 1-9, the capping device 10 further includes a cap 279 combined with the oil cap 74 and a sealing gasket 333, wherein the cap is covered 279 has a peripheral wall 291 having a lower surface 293, and the gasket 333 includes a first portion 335 having the same cross-sectional shape as the upper surface 78 and a second portion 337 having the same cross-sectional shape as the second ring wall 131. The first portion 335 of the gasket 333 abuts against the upper surface 78 of the oil cap 74, the second portion 337 abuts the end surface of the second ring wall 131 aligned with the upper surface 78, and the trim cover 279 is located above the gasket surface 333 And locking on the oil cover 74, causing the lower surface 293 of the trim cover 279 to clamp the first and second portions 335, 337 of the sealing sheet 333, such that the trim cover 279 cooperates with the first portion 335 to prevent oil, water, air or Other materials enter and exit the recess 88 by a gap between the trim cover 279 and the oil cover 74. The second portion 337 is sealingly spaced from the movable slot 133 by the trim cover 279 to cause oil, water, air or other The material cannot enter and exit the recess 88 through the recess 155 through the movable slot 133, so that the recess 88 can only communicate with the outside of the oil cap 74 through the vent hole 81.

Referring to the third and fourth figures, for convenience of explanation, it is assumed that the oil cover 74 is closed on the grease fitting 319, at which time the sealing surface 173 of the gasket 157 is in close contact with the end surface of the grease fitting 319, and the plug member 145 is affected by gravity. The channel 139 is located near the slot 140 and abuts against the surface of the spacer 177, so that the channel 139 communicates with the installation space 92 through the through hole 141, and the gasket 157 is filled with a grease fitting. 319 is displaced a distance (about 2 mm) away from the spacer 177, causing the slot 140 of the cover 74 to be opened (as shown in FIG. 4A), so that the tank passage 331 in the grease fitting 319 passes through the slot 140 and The channel 139 is in communication with the fourth slot 111. When the oil cover 74 is closed, the convex portion 315 of the locking block 297 extends into the second opening 40 to engage with the engaging portion 41. The top block 44 is located at the retracted position and is convex. The portion 46 abuts against the end surface of the convex portion 315 of the lock block 297, causing the oil cover 74 to remain in the closed state. Figure 4 shows that when the pressure inside the tank is balanced or the pressure outside the tank is small, the first and second valves 213, 231 are only biased by the first or second springs 197, 255, respectively, and because the second spring 255 The spring force is greater than the first spring 197, causing the second valve 231 to remain in the first position, so the second valve 231 closes the third slot 98 and the first side 215 of the first valve 213 abuts against the second valve The second end surface 235 of the second valve 231, such that the perforation 239 of the second valve 231 is closed by the first valve 213, in such a state, the fuel or oil and gas in the fuel tank can only flow to the third tank 98 at the top, and the material outside the fuel tank At most, it can only flow to the second tank 96 at most, that is, the first and second valves 213, 231 are sealingly blocked between the second tank 96 and the third tank 98, so that when the vehicle is overturned When it is dumped, the fuel in the fuel tank is not easily leaked through the oil cover 74, and the oil and gas in the oil tank is not easily leaked through the oil cover 74.

When the fuel in the fuel tank is reduced due to the engine operation of the vehicle, the oil tank 74 is in a closed state due to the oil cover 74, which causes a negative pressure state inside the fuel tank, so that suction inside the fuel tank is generated, and the negative pressure inside the fuel tank reaches 10kpa~ At 15 kPa, the suction force generated inside the fuel tank to the first valve 213 will be sufficient to overcome the elastic force of the first spring 197, so that the first valve 213 is attracted by the suction force generated by the oil tank and approaches The first step 113 is displaced until the annular wall 212 of the spacer 199 abuts against the first step 113 (as shown in FIG. 5), at which time the first side 215 of the first valve 213 and the second valve 231 The second end faces 235 are spaced apart, causing the perforations 239 of the second valve 231 to be turned on. Further, since the spacers 199 are smaller than the third slots 98, the spacers 199 cannot completely cover the first step 113 (as shown in FIG. 6). Therefore, the third groove 98 and the fourth groove 111 communicate with each other through the four channels 117. In this state, the air outside the oil cover 74 enters the concave chamber 88 through the vent hole 81, and the air further passes through the vent hole. 278, the through hole 239 enters the third slot 98, and the air in the third slot 98 passes through the four slots 117 through the fourth slot 111 and enters the tank passage 331 through the passage 139, so that the air outside the oil cover 74 can be introduced. In the fuel tank, the internal pressure is lowered in the fuel tank to reduce the negative pressure value, so that the fuel tank can smoothly supply fuel to the engine. When the negative pressure value is reduced to be insufficient to resist the elastic force of the first spring 197, the first valve 213 is again biased by the first spring 197 to urge the first side surface 215 to abut against the second end surface of the second valve 231. 235.

When the vehicle is not in the state of being fired, the fuel tank will generate high temperature due to exposure to the sun, such that the oil and gas inside the fuel tank will increase, so that the pressure inside the fuel tank will increase. When the positive pressure inside the fuel tank is greater than 20 kPa, the inside of the fuel tank The mixed gas mixed with the oil and gas pushes the displacement of the first and second valves 213, 231 against the elastic force of the second spring 255 through the passage 139, and the first and second valves 213, 231 may generate two different states, see the seventh The figure shows the first state after the first and second valves 213 are pushed by the pressure inside the fuel tank. When the second valve 231 is displaced from the first position to the second position, the first side 215 of the first valve 213 is tight. Close the perforation 239 against the second end surface 235 of the second valve 231 And the second end surface 235 of the second valve 231 is spaced apart from the second step surface 114, and the spacer 251 abuts against the end surface 276 of the lock cover 259 (as shown in FIG. 7), although the spacer 251 abuts The end face 276 of the cover 259 is locked, but since the end face 276 is provided with four recesses 280, the chamber 277 remains in communication with the second slot 96. When the second valve 231 is in the second position, the inside of the tank is mixed with oil and gas. The mixed gas enters the third and fourth slots 98, 111 of the installation space 92 via the passage 139, enters the recess 88 through the recess 280 and the vent hole 278, and finally mixes the mixed gas of the oil and gas through the oil and gas filter 351, and filters the oil and gas. The 351 filters the oil and gas in the mixed gas mixed with the oil and gas, so that the gas outside the oil tank is free from oil and gas, and the pressure is released to the outside to balance the pressure inside and outside the oil tank, causing the positive pressure value inside the oil tank to decrease.

Referring to FIG. 7A, the second state in which the first and second valves 213 are pushed by the pressure inside the fuel tank is shown, although the second valve 231 is pushed to the second position by the pressure of the mixed gas mixed with the oil and gas inside the fuel tank, The first side 215 of the first valve 213 does not abut against the second side 235 of the second valve 231, so that the through hole 239 of the second valve 231 is not closed by the first valve 213, and the pressure inside the fuel tank enters the passage via the passage 139. The third and fourth slots 98, 111 are further inserted into the recess 88 through the through holes 239 and the vent holes 278 of the second valve 235, and finally the mixed gas mixed with the oil and gas passes through the oil filter 351, and the oil filter 351 is mixed with the oil and gas. The oil and gas in the mixed gas filters, causing the gas outside the tank to be free of oil and gas, and the pressure is released to the outside to balance the pressure inside and outside the tank, causing the positive pressure inside the tank to drop.

When fuel is to be added to the fuel tank, the main switch lock is operated to cause the actuating member 54 to be pulled and rotated by the cable, such that the lever 60 of the actuating member 54 will interlock the top block 44 by the retraction. The position (as shown in Fig. 6) is displaced to the extended position (as shown in Fig. 8). When the top block 44 is in the extended position, the lock block 297 is pushed by the convex portion 46 of the top block 44 to be displaced and engaged. The portion 41 is disengaged (as shown in Fig. 8) such that the oil cap 74 is released, further allowing the oil cap 74 to pivot about the axis of rotation defined by the pivot 298 to open the tank passage 331 of the fuel filler nozzle 319 to add fuel to the fuel tank. Inside.

In addition, when the vehicle is tilted and the lock device 10 is turned over (as shown in Fig. 9), the plug member 145 is moved by gravity into the blocking section 143, so that the gasoline in the fuel tank flows into the passage 139 and is plugged. The 145 blocks, thereby reducing the speed at which the gasoline enters the installation space 92 through the through hole 141, further reducing the speed at which the gasoline in the fuel tank overflows outside the lock device 10.

The creation utilizes the change of the pressure of the fuel tank. When the pressure inside the oil tank is negative, the generated suction force can displace the first valve 213, so that the air outside the oil cover 74 enters the equilibrium pressure in the oil tank, and when the inside of the oil tank is positive pressure, the generation occurs. The thrust can simultaneously push the first and second valves 213, 231, so that the mixed gas mixed with oil and gas inside the fuel tank is filtered by the oil filter 351 and then dissipated to the outside of the oil cover 74, in addition to balancing the pressure inside the fuel tank relative to the outside. In addition, it can prevent the escape of oil and gas in the fuel tank, which is beneficial to environmental protection and human health.

In addition, the vent hole 81 cooperates with the design of the extension wall 83 to utilize the physical phenomenon that the water flows downward, so that the air outside the oil cover 74 can easily enter the oil cover 74, but the moisture or impurities outside the oil cover 74 are substances. It is not easy to pass through the vent hole 81 through the vent hole 81 into the recess 88 of the oil cap 74.

Furthermore, since the oil and gas filter 351 is disposed on the vent hole 81 and requires a certain pressure to pass through the oil and gas filter 351, the moisture outside the oil cap 74 is Or the moisture is relatively difficult to enter the inside of the tank through the oil filter 351.

In addition to the technical features of the oil filter 351 of the first embodiment of the lockable oil and gas capping device shown in the drawings of Figs. 1 to 9, the oil and gas filter 351 can be installed differently. Position and can achieve the same effect as the filterable oil and gas lock device of the first embodiment, as shown in the drawings of Figures 10 to 11 of the second embodiment of the oil and gas cap lock device, compared to the filterable In a first embodiment of the oil and gas lock device, the oil filter 351 (activated carbon) of the second embodiment of the oil and gas lock device is designed to conform to the sheet-like structure of the recess 88 of the oil cover 74, and is laid. The vent hole 81 is covered in the recess 88 of the oil cap 74, so that when the mixed gas mixed with the oil and gas reaches the recess 88, the oil filter 351 can absorb or filter the oil and gas mixed in the mixed gas after the oil and gas The vent hole 81 is discharged to the outside to achieve the function of filtering the oil and gas in the mixed gas mixed with the oil and gas.

The oil and gas filter 351 of the second embodiment of the present invention capable of filtering the oil and gas lock device has a large contact area because it is laid in the recess 88, and can filter or absorb more oil and gas in the mixed gas mixture. The efficiency of filtration or absorption is also high.

The present invention further provides a third embodiment of a lockable oil and gas capping device as shown in the diagram of Fig. 12, which is a filterable oil and gas lock cover as compared with the first embodiment of the filterable oil and gas lock device. The cylindrical oil and gas filter 351 of the third embodiment of the apparatus is installed in the passage 139 of the oil cap 74 and combined with the through hole 141, so that the mixed gas mixed with the oil and gas discharged from the oil tank enters the passage 139 and must pass through the oil and gas. The filter 351 can enter the fourth tank 111 of the installation space 92, so the oil and gas mixed in the mixed gas of the oil and gas will be firstly filtered by the oil and gas filter 35. 1 Filter or absorb before discharging the cover device 10.

The present invention further provides a fourth embodiment of a lockable oil and gas capping device as shown in the drawing of Fig. 13, which is a filterable oil and gas lock cover as compared with the first embodiment of the filterable oil and gas lock device. The cylindrical oil and gas filter 351 of the fourth embodiment of the apparatus is installed in the vent hole 278 of the lock cover 259, so that the mixed gas of the oil and gas discharged from the oil tank enters the installation space 92 and must pass through the oil filter 351. Entering the recess 88, the oil and gas in the mixed gas mixed with the oil and gas is first filtered or absorbed by the oil filter 351 to be discharged outside the lock device 10.

The present invention further provides a fifth embodiment of a lockable oil and gas capping device as shown in the diagram of Fig. 12, which is a filterable oil and gas lock cover as compared with the first embodiment of the filterable oil and gas lock device. The cylindrical oil and gas filter 351 of the fifth embodiment of the apparatus is installed in the through hole 239 of the second valve 231, so that the mixed gas of the oil and gas discharged from the oil tank enters the installation space 92, and must pass through the oil filter 351. Entering the recess 88, the oil and gas in the mixed gas mixed with the oil and gas is first filtered or absorbed by the oil filter 351 to be discharged outside the lock device 10.

The third to fifth embodiments of the present invention for filtering the oil and gas lock device also have the function of preferentially filtering the oil and gas mixed in the mixed gas and then discharging the oil to the outside of the lock device 10, thereby reducing the oil and gas in the atmosphere, for the environment. Protection and human health are helpful.

The present disclosure as disclosed in the specification can be implemented in other specific forms without departing from the spirit of the invention, and some forms of these specific forms have been pointed out. Therefore, the embodiments disclosed in the specification are to be considered as illustrative and not limiting. The scope of the present invention is defined by the scope of the appended claims, and is not intended to be limited by the scope of the invention.

12‧‧‧ valve device

74‧‧‧ oil cover

76‧‧‧Part I

78‧‧‧Upper surface

79‧‧‧ end face

81‧‧‧Ventinel

82‧‧‧ surrounding walls

83‧‧‧Extended wall

84‧‧‧Part II

86‧‧‧ lower surface

88‧‧ ‧ alcove

89‧‧‧Slot room

90‧‧‧First ring wall

91‧‧‧ surface

92‧‧‧Installation space

93‧‧‧ bottom

94‧‧‧first slot

96‧‧‧second slot

98‧‧‧ third slot

111‧‧‧fourth slot

113‧‧‧ first stage

114‧‧‧ second stage

115‧‧‧ bottom

117‧‧‧ channel

131‧‧‧second ring wall

133‧‧‧ activity slot

135‧‧ ‧ gap

137‧‧‧Positioning column

139‧‧‧ channel

140‧‧‧Slots

141‧‧‧through hole

143‧‧‧ Blocking section

145‧‧‧plugs

151‧‧‧ pivot arm

153‧‧‧Connecting end

155‧‧‧ pivot end

156‧‧‧ pivot hole

157‧‧‧ Seal

159‧‧‧ Sockets

160‧‧‧ slots

171‧‧‧Flange

173‧‧‧ sealing surface

175‧‧ ‧ spring

177‧‧‧shims

191‧‧‧Positioning holes

193‧‧‧Keyhole

195‧‧‧ screws

197‧‧‧First spring

199‧‧‧shims

211‧‧‧bond hole

212‧‧‧Circle wall

213‧‧‧first valve

215‧‧‧ first side

217‧‧‧ second side

219‧‧‧Bump

231‧‧‧Second valve

233‧‧‧ first end face

235‧‧‧second end face

237‧‧‧ binding column

239‧‧‧Perforation

251‧‧‧shims

253‧‧‧Combination hole

254‧‧‧ ring wall

255‧‧‧Second spring

257‧‧‧Seal ring

259‧‧‧Lock cover

271‧‧‧ upper end

275‧‧‧ ring wall

276‧‧‧End face

277‧‧ ‧ room

278‧‧‧vents

279‧‧‧ Cover

280‧‧‧ Groove

291‧‧‧ surrounding walls

293‧‧‧ lower surface

297‧‧‧Lock block

299‧‧‧ inner end

311‧‧‧Outside

313‧‧‧ 容容

315‧‧‧ convex

317‧‧‧Flexible components

333‧‧‧Sealing gasket

335‧‧‧Part 1

337‧‧‧Part II

351‧‧‧ oil and gas filter

Claims (6)

A capping device capable of filtering oil and gas, comprising: a body, a space is formed inside the seat body, the seat system is to be aligned with a fueling nozzle provided by a fuel tank; an oil cover is detachably engaged in the space of the seat body, The oil cover includes an upper surface and a lower surface, and the oil cover includes an alcove extending from the upper surface toward the lower surface but spaced apart from the lower surface, the recess having a bottom surface, the bottom surface forming an installation space, and the oil cover further comprising a lower surface a passage extending into the installation space, a vent hole extending from the bottom surface to the recess and communicating with the outer side of the installation space, a slot formed in the lower surface, and the slot extending from the outer surface of the oil cover to the passage; a gasket coupled to The oil cover is located outside the lower surface; a valve device is installed in the installation space of the oil cover; an oil filter is combined with the oil cover and covers the vent hole; and when the pressure inside the oil tank is greater than atmospheric pressure, the inside of the oil tank The mixed gas mixed with oil and gas pushes the valve device through the passage and enters the installation space, and then enters the oil and gas filter through the vent hole, and the oil and gas filter filters the oil and gas in the mixed gas. They will be released to the outside world. The capable device for filterable oil and gas according to claim 1, wherein the valve device comprises a first valve and a second valve, the first valve comprising a first side and a second side, the second valve comprising a first end surface and a second end surface, the second valve includes a through hole extending from the first end surface to the second end surface, the valve device further comprising a lock cover covering the installation space, the lock cover including a vent hole communicating with the installation space, The second valve can be in one Displacement between the first position and a second position; when the internal pressure of the oil tank is balanced with the outside, the first side of the first valve is closely abutted against the second end surface of the second valve, and the perforation is closed, and the first The second valve is located at the first position, causing the second end surface to abut against the inner surface of the installation space, and the installation space is sealed. When the internal pressure of the oil tank is less than atmospheric pressure, the first valve is separated from the second end surface of the second valve to open the perforation, and the external air The oil filter, the vent hole, the perforation and the installation space enter the oil tank through the passage. When the pressure inside the oil tank is greater than the atmospheric pressure, the second valve is displaced to the second position, so that the second end surface is separated from the inner surface of the installation space. The mixed gas with oil and gas inside the fuel tank enters the installation space through the passage, and then enters the oil and gas filter through the vent hole. The oil and gas filter filters the oil and gas in the mixed gas and releases it to the outside. The filterable oil and gas lock device according to claim 1, wherein the oil and gas filter is combined with the vent hole of the oil cover. The capable device for filtering oil and gas according to claim 1, wherein the oil and gas filter is incorporated in the recess of the oil cap and covers the vent hole. A capping device capable of filtering oil and gas, comprising: a body, a space is formed inside the seat body, the seat system is to be aligned with a fueling nozzle provided by a fuel tank; an oil cover is detachably engaged in the space of the seat body, The oil cover includes an upper surface and a lower surface, and the oil cover includes an alcove extending from the upper surface toward the lower surface but spaced apart from the lower surface, the recess having a bottom surface, the bottom surface forming an installation space, and the oil cover further comprising a lower surface a passage extending to the installation space, a vent hole extending from the bottom surface to the recess and located outside the installation space, a slot formed on the lower surface, and the slot extending from the outer surface of the oil cover to the passage; a gasket coupled to the oil Outside the cover and near the lower surface; a valve device is mounted in the installation space of the oil cover, the valve device includes a first valve and a second valve, the first valve includes a first side and a second side, and the second valve includes a first end and a first a second end surface, the second valve includes a through hole extending from the first end surface to the second end surface, the valve device further comprising a lock cover covering the installation space, the lock cover comprising a vent hole communicating with the installation space, the second valve being Displacement between the first position and a second position; an oil filter is combined with a passage coupled to the oil cover; and when the internal pressure of the oil tank is less than atmospheric pressure, the first valve is separated from the second end of the second valve to open the perforation, the outer portion The air enters the oil tank through the oil and gas filter, the vent hole, the perforation and the installation space. When the pressure inside the oil tank is greater than the atmospheric pressure, the second valve is displaced to the second position, so that the second end surface is separated from the inner surface of the installation space. The mixed gas with oil and gas inside the fuel tank enters the installation space through the passage, and then enters the oil and gas filter through the vent hole, and the oil and gas filter filters the oil in the mixed gas. , And then release it to the outside world. A lockable device for filtering oil and gas, comprising: a body, a space formed on the inner side of the seat body, the seat system is fixed at a fuel filler nozzle of the oil tank; and an oil cover is detachably engaged with the seat body In the space, the oil cover includes an upper surface and a lower surface, and the oil cover includes an alcove extending from the upper surface toward the lower surface but spaced apart from the lower surface, the recess has a bottom surface, the bottom surface forming an installation space, and the oil cover further includes a passage extending from the lower surface to the installation space, a vent hole extending from the bottom surface to the recess and located outside the installation space, a slot formed in the lower surface, and the slot extending from the outer surface of the oil cover to the passage; a gasket, Combined with the oil cover and near the lower surface; a valve device is installed in the installation space of the oil cover, and the valve device includes a first valve and a second valve, the first valve includes a first side surface and a second side surface, the second valve includes a first end surface and a second end surface, and the second valve includes a through hole extending from the first end surface to the second end surface. The valve device further includes a lock cover covering the installation space, the lock cover includes a vent hole communicating with the installation space, the second valve is displaceable between a first position and a second position; and an oil and gas filter is mounted on the lock cover Any one of at least one of the vent or the second valve; when the internal pressure of the tank is balanced with the outside, the first side of the first valve abuts against the second end of the second valve, and the hole is perforated Closed, and the second valve is located at the first position, causing the second end surface to abut against the inner surface of the installation space, sealing the installation space, and the first valve is separated from the second end surface of the second valve when the internal pressure of the oil tank is less than atmospheric pressure Open perforation, the external air enters the oil tank through the oil and gas filter, the vent hole, the perforation and the installation space through the passage. When the pressure inside the fuel tank is greater than the atmospheric pressure, the second valve is displaced to the second position, so that the second valve From the inner surface of the end face of the installation space, mixed with a mixed gas inside the tank via the oil passage through the oil filter medium and gas into the oil chamber lid recess, and then released to the outside through the vent hole.