TWI734184B - Airtight tank locking device (2) - Google Patents

Abstract

The present invention is an airtight tank locking device (2), which comprises: a tank body, a cover body and a switch assembly, the control part is pressed in the assembly hole for the opening and closing mode, the control part is pressed toward the piston part, and the two baffle pieces are pressed against The limit ring piece, the engagement post pushes against the piston member to move toward the groove, so that the storage groove, groove, each ventilating channel, assembly hole, and ventilating guide groove are connected to each other, and the air pressure in the storage groove and the groove is equal to the outside air pressure , To pull the tank and cover apart from each other; when the control part is displaced outwards, it will drive the displacement of the piston part and close the connection between the assembly holes and grooves. The air pressure in the tank is different from the outside air pressure, between the tank and the cover. Keep airtight; and when the assembly hole of the control part is pivoted, it is in the locking mode. The two stoppers use the card protrusions to engage the limit parts of the card protrusions to limit the pressing of the control part, so as to maintain the air between the tank body and the cover body. Tightness.

Description

Airtight tank locking device (2)

The present invention is an airtight tank locking device (2), which specifically refers to the technology applied in the storage field. The main technology is that in addition to providing airtight storage of items after storage, it can also prevent others from opening and indeed protect the storage of items, namely It is a very practical invention.

The preservation of food ingredients is very important to people. Fresh food helps people to replenish nutrition, while stale food can cause disease on people’s body. Therefore, an airtight storage device has been introduced on the market. It is mainly used to put ingredients that need to be freshly preserved, and airtightly block outside air from entering, so as to keep the ingredients fresh, and to prevent air from entering and oxidizing. However, the above-mentioned storage device with air-tight effect has another problem. Since the storage device with air-tight effect mainly provides storage of food ingredients, it is easy for young children who are very interested in eating to open the air-tight effect. The storage device, and then take the internal ingredients to eat. If the storage device contains fatal ingredients for young children, especially medicines or marijuana and other medicinal materials, it will cause edible dangers, and the consequences will be unimaginable, so For the safety of young children, the storage devices with airtight effects on the market must be further thought about how to improve to protect the safety of young children.

The main purpose of the present invention is to not only provide the freshness of the ingredients in the storage, but more importantly, it can prevent the children from opening and eating by mistake, thereby protecting the safety of the children, and improving the conventional storage device with airtight effect. It is easy to be opened by young children, and then accidentally eaten the dangerous food materials in the storage device. Thereby, in order to achieve the above-mentioned purpose and effect, an airtight tank locking device (2) of the present invention includes: a tank body, one end of which is recessed to form a receiving groove; In the tank body, one end of the cover body is recessed to form a groove and the storage groove is closed when the cover is assembled, and an assembly hole penetrates from the outer side of the cover body and communicates with the groove, and the assembly hole is located in the groove The aperture is further provided with a limiting ring piece, and the ring wall of the limiting ring piece is provided with a plurality of stop parts, and a plurality of ventilation channels are formed between each stop part and the stop part; in addition, the inner wall of the assembly hole is provided with a plurality of stop parts. There are a plurality of stop blocks, and each stop block is respectively provided with a convex limit part; and a switch group, which is installed in the assembly hole of the cover body, and the switch group includes a piston part and a control part, the control One end of the member is inserted into the assembly hole from the outer side of the cover. The end of the control member inserted includes two stoppers and an engagement post. The two stoppers are arranged at intervals and surround the circumference of the engagement post. A card protrusion is protruded at the ends, an air guide channel is formed between the two baffles and the engagement column, and at least one air-permeable guide groove is concavely provided on the outer peripheral surface of the control member to communicate with the assembly hole; the piston member is installed in the concave In the groove, one end is inserted into the assembly hole and assembled with the joining column; and the control part is in an open and closed mode when pressed in the assembly hole, the control part is pressed toward the piston part, and the two stoppers are pressed against When limiting the ring piece, the engagement column pushes against the piston to move toward the groove. At this time, the receiving groove, the groove, the ventilating channels, the assembly hole, and the at least one ventilating guide groove are in communication with each other, and the receiving groove, The air pressure in the groove is equal to the outside air pressure, so that the tank and the cover can be pulled apart from each other; on the contrary, when the control part is displaced outward, it will drive the displacement of the piston and close the connection between the assembly hole and the groove, so that The air pressure in the tank body is different from the outside air pressure, and the tank body and the cover body are not easy to pull apart to maintain airtightness; and the control member is in a locking mode when pivoting in the assembly hole, and the second block The sheet is pressed against the protrusions of the plurality of stop blocks by the card protrusions to limit the pressing of the control member, thereby preventing the control member from being pressed again to form an open-close mode, so as to maintain the can body and the cover body. The airtightness of the room.

According to the above description of the main technology of the present invention, the advantage is that through the setting of the control member, the user can press the control member in a normal state, so that the control member is displaced toward the piston member and drives the piston member to move together. Move to release the closed assembly hole, so that the air pressure in the tank is the same as the outside air pressure, so that the cover can be pulled out of the tank smoothly. On the contrary, when the control part is not pressed, the piston part can be sure Blocking the assembly hole makes the air pressure in the tank different from the outside air pressure, and keeps the tank in an airtight state to maintain the freshness of the stored items; in addition, in order to prevent the opening of young children, the rotation of the control piece is based on this The card protrusions of the two stoppers are pressed against the card protrusion limit parts of each stopper, so that the control part cannot be easily pressed again, and the cover cannot be pulled out if the control part cannot be pressed down. The lid body cannot be opened relative to the tank body, preventing young children from accidentally taking the contents of the tank body and eating it, and reducing the occurrence of dangerous situations.

In order to clearly illustrate that the present invention can achieve the above objectives and effects, the features and effects of the embodiments of the present invention are described in detail with figures. Please refer to Figures 1 to 11 and Figures 3A, 6A~6C, and 7A. An airtight tank locking device (2) of the present invention includes: a tank body 1 in a cylindrical shape , One end of which is recessed to form a storage groove 11, which provides storage for food and articles; a cover body 2 is cylindrical, and its cover group is pulled away from the end of the tank body 1 where the storage groove 11 is provided, and One end of the cover 2 is recessed to form a groove 21 and closes the receiving groove 11 when the cover is assembled, and a combination block 3 is arranged in the groove 21, and an assembly hole 4 is provided from the outer side of the cover 2 It penetrates the assembly block 3 and communicates with the groove 21, and the opening of the assembly hole 4 located in the groove 21 is further provided with a limiting ring piece 5, and the end surface of the limiting ring piece 5 is convexly provided with a plurality of stop portions 51, each The blocking portions 51 are arranged in an interval, and a plurality of air-permeable channels 52 are formed between each blocking portion 51 and the blocking portion 51; in addition, the inner wall of the assembly hole 4 is provided with a plurality of blocking blocks 6, each blocking block 6 The bottom surface of the system abuts against the stop ring piece 5, and each stop block 6 is respectively provided with a recess 61 and a protruding stop 65; and a switch group 7, which is installed in the assembly hole 4 of the cover 2 The switch assembly 7 includes a piston 71 and a control member 72. One end of the control member 72 is inserted into the assembly hole 4 from the outer surface of the cover 2, and the end of the control member 72 inserted includes two stoppers 721 and a joint. The connecting column 722 corresponds to the orifice surrounded by the limiting ring piece 5, and the two blocking pieces 721 are arranged at intervals and surround the circumference of the connecting column 722, and are respectively located at the ends of the two blocking pieces 721 A card protrusion 723 is protrudingly provided, an air guide channel 724 is formed between the two blocking pieces 721 and the engagement post 722, and at least one air-permeable guide groove 73 is recessed on the outer peripheral surface of the control member 72 to communicate with the assembly hole 4; the piston The member 71 is installed in the groove 21 and inserted into the assembly hole 4 with one end and assembled with the joining column 722; and the control member 72 is in an open and closed mode when pressed in the assembly hole 4, and when the control member 72 faces When the piston 71 is pressed, and the two stop pieces 721 are pressed against the limiting ring piece 5, the engagement column 722 is pushed against the piston 71 to move toward the groove 21. At this time, the receiving groove 11, the groove 21, each The ventilation channel 52, the assembly hole 4, and at least one ventilation guide groove 73 are connected to each other, and the air pressure in the receiving groove 11 and the groove 21 is equal to the outside air pressure, so that the tank body 1 and the cover body 2 can be pulled out from each other. Conversely, when the control member 72 is displaced outward, it will drive the piston member 71 to move and close the connection between the assembly hole 4 and the groove 21, so that the air pressure in the tank 1 is different from the outside air pressure, the tank 1 It is not easy to pull apart between the cover body 2 and the cover body 2 to maintain airtightness; and the control member 72 is in a locking mode when pivoting in the assembly hole 4, and the two blocking pieces 721 are pressed against the plurality of blocks by the protrusions 723. The protrusions 65 of the stop block 6 restrict the pressing of the control member 72, thereby preventing the control member 72 from being pressed again to form an open-close mode, so as to maintain the airtightness between the tank body 1 and the lid body 2. sex.

According to the above, please refer to Figures 3, 3A, 6, 6A, 6B, and 6C. When the control member 72 is pressed in the assembly hole 4 in the opening and closing mode, the control member 72 faces When the piston 71 is pressed, and the latching protrusions 723 of the two blocking pieces 721 are pressed against the limiting ring piece 5, the engagement column 722 is pushed against the piston 71 to move toward the groove 21, and at this time the receiving groove 11 , The groove 21, each venting channel 52, the assembly hole 4, and at least one venting guide groove 73 are mutually connected, so that the air pressure in the receiving groove 11, the groove 21 is equal to the outside air pressure, so that the tank body 1 and the cover 2 can be released from the airtightness and can be pulled apart from each other; on the contrary, when the control member 72 is displaced outward (returns to the original position), it will drive the piston member 71 to move and close the connection between the assembly hole 4 and the groove 21, so that The air pressure in the tank body 1 is different from the outside air pressure, and the tank body 1 and the cover body 2 are not easy to pull apart and remain airtight. Please refer to the first, third, fourth, and fifth diagrams; When the control member 72 pivots in the assembly hole 4, it is in a locking mode. Please refer to the seventh, seventhA, and eight to eleventh figures, and the third figure is used as an aid. The 723 will be displaced and clamped against the protrusions 65 of the stop blocks 6, so that the control member 72 can be restricted from being pressed again, thereby preventing the cover 2 from pulling out of the tank 1. The more detailed explanation explains that when the user needs to remove the items or food in the tank 1, he must press the control member 72. The pressing of the control member 72 can push the piston member 71 toward the groove 21. At this time, The latching protrusions 723 of the two blocking pieces 721 of the control member 72 will be attached to the limiting ring piece 5, and drive the piston 71 to move without being attached to the assembly block 3, so that the assembly hole 4 can communicate with the groove 21 And the accommodating groove 11, and because a plurality of air-permeable channels 52 are formed between the limiting ring piece 5 and each block 51, the piston member 71 is not attached to the assembly block 3, and the air-permeable channels 52 are used to assemble The connection between the hole 4 and the at least one ventilation guide groove 73 allows the air in the tank 1 to circulate with the outside air to form an air pressure equilibrium state. At this time, the lid 2 can be easily pulled out of the tank 1, and then the tank can be taken out. The contents and food materials contained in the body 1; on the contrary, cover the cover body 2 after taking it. When the child wants to take the goods and food materials in the tank 1 in the future, as long as the child does not press the control member 72, the The piston 71 will firmly stick to the assembly block 3 and close the assembly hole 4. Through the difference between the air pressure in the tank 1 and the outside air pressure, young children cannot pull up the cover 2 smoothly to take the contents of the tank 1 , To ensure the safety of the young child; if the young child already has the ability to press, the user only needs to rotate the control member 72 without pressing the control member 72, so that the two stoppers 721 of the control member 72 are locked The convex block 723 is displaced to the convex limit portions 65 of the stop blocks 6, so that the convex limit portions 65 are restricted to prevent the control member 72 from being pressed any more. A child who can press the control member 72 performs the pressing operation. For the user, the user only needs to rotate the control member 72 to the open and closed position, and let the card protrusions 723 separate from the card protrusions 65 and then press Operate in order to pull the lid 2 away from the tank 1 again.

Based on the above basic description of the present invention, the detailed technology of the present invention will be further explained. First, in the arrangement of the piston 71, in order to achieve a certain air-tight effect, the piston 71 further includes a stopper 711 and A plug portion 712, the blocking portion 711 is a circular sheet-shaped body and slightly tapered, and in the design of the plug portion 712 of the present invention, two pivot lugs 712A are arranged in a spaced manner. The diameter of the circle on the side of the part 711 facing the assembly hole 4 is larger than the diameter of the assembly hole 4. In addition, a bayonet block 712B is protruded on the outer peripheral surface of the plug part 712, and the engagement post 722 of the control part 72 is connected to the piston part 71 The inserted end is recessed with a slot 725, and is additionally provided with an engaging hole 726 corresponding to the bayonet block 712B. The engaging hole 726 communicates with the slot 725. The combination of the piston member 71 and the control member 72 is a latch part. 712 penetrates into the slot 725, and the arrangement of the pin portion 712 as the two pivot lugs 712A makes it have a space for elastic compression, so that the pin portion 712 can easily enter the slot 725 and be locked by the latch block 712B Fastened to the engaging hole 726, so that the piston 71 and the control part 72 can be combined to prevent falling off, and the control part 72 can reliably drive the displacement of the piston 71 to completely close the assembly hole 4, thereby achieving The air-tight effect prevents the cover 2 from being pulled out of the tank 1 easily. Please refer to the third figure and the fourth, fifth, sixth A, sixth B, seventh A, ninth, and tenth pictures.

In addition, when the control member 72 is switched from the opening and closing mode to the locking mode, in order to prevent the user from rotating the control member 72 too much, the pivoting of the control member 72 must be restricted and the latches of the blocking pieces 721 must be maintained. The protrusion 723 can be locked into the corresponding recess 61, which is simply to provide the user with the function of identifying the locking position of the control member 72. Therefore, each stopper 6 is further L-shaped and includes a first limiting portion 62 and a second limiting portion 63, and the first limiting portion 62 of each stopping block 6 is connected to the second limiting portion 63 by one end and is perpendicular to each other, and each recessed portion 61 is set in each first limiting portion. The position portion 62 is close to the second limit portion 63, and the end corner of the other end of the first limit portion 62 of each stop block 6 is formed with an inclined guide surface 64, and each first limit portion 62 is located on each Between the inclined guide surface 64 and each recessed portion 61 is formed a convex stopper 65. When the user switches from the opening and closing mode to the locking mode when the rotation control member 72 is switched, the setting of the inclined guide surface 64 can prevent The corners of the card protrusions 723 of the two blocking pieces 721 are clamped against the first limiting portion 62, and the inclined guide surface 64 also has a guiding function to ensure that the card protrusions 723 of the two blocking pieces 721 After being introduced to the end surface of each locking protrusion 65, it then enters the corresponding recess 61. The second limiting portion 63 of each stopping block 6 assists in stopping the pivoting of each stopping piece 721, thereby preventing For children to rotate the control part 72 on their own, please refer to the seventh to eleventh pictures, and cooperate with the third and third A pictures. In addition, in order to allow the user to repeatedly and smoothly press on the pressing control member 72, a spring 8 is further provided on the outer periphery of the engaging column 722 and located in the air guide channel 724, one end of the spring 8 springs against the control member 72 , And the other end of the spring 8 springs against each stop 51. The spring 8 is reset after being pressed by the control element 72 with elastic force to facilitate the pressing operation in the opening and closing mode and the locking mode, please refer to The third, fourth, fifth, sixth A, sixth B, seventh A, and nine to ten pictures are shown.

In order to allow the control member 72 to be pressed, the receiving groove 11 of the tank body 1 can be reliably connected to the outside. Therefore, the length of the two blocking pieces 721 from the end to the end surface of each card protrusion 723 defines a T, and the engaging column 722 The length is defined as t, and the lengths of the two stoppers 721 and the engagement post 722 are compared as T<t, so when the control member 72 is pressed, the end of the engagement post 722 and the piston member 71 will pass through the assembly hole 4 It is located in the groove 21 to ensure that the piston 71 does not abut the assembly block 3, please refer to the third figure and cooperate with the sixth A to assist; in addition to the above definition, the limit ring 5 is formed by the assembly hole 4. The length of the extension of the hole wall plus the length of the extension of the stop 51 defines a D, and the length of each stop block 6 extending from the wall of the assembly hole 4 defines a d, and the limit ring piece 5 plus the length of the stopper 51, compared with the extended length of each stopper 6 is D>d, so that the control member 72 can be pressed and locked as scheduled, please refer to the third figure. In order to provide the user with the ability to pull up the cover body 2 smoothly and not difficult to pull up, a plurality of air holes 41 are provided on the inner wall of the assembly hole 4, and each air hole 41 penetrates from the inner wall of the assembly hole 4 to the cover body. 2 On the top surface, each air hole 41 is pressed by the control member 72 to quickly balance the air pressure in the tank 1 and the outside. Please refer to Figure 6A with the help of Figure 1. Finally, in order to facilitate the user to manipulate the rotation of the control member 72, one end of the control member 72 is inserted into the assembly hole 4, and the other end of the control member 72 is exposed outside the assembly hole 4 and forms a control handle 727. The user can The finger grips the control handle 727 to pivot to change the rotation direction of the control member 72.

1: tank body 11: Storage slot 2: cover body 21: Groove 3: Combination block 4: Assembly hole 41: Stoma 5: Limit ring 51: Block 52: Ventilation channel 6: Stop block 61: Depressed part 62: The first limit 63: The second limit 64: inclined guide surface 65: Card convex limit 7: Switch group 71: Piston 711: Blocking Department 712: Bolt Department 712A: pivot ear piece 712B: bayonet block 72: control 721: Block 722: Binding Column 723: Card Bump 724: Air Channel 725: slot 726: Joint hole 727: control handle 73: Breathable guide groove 8: Spring

The first figure is a three-dimensional schematic diagram of the present invention. The second figure is an exploded perspective view of the present invention. The third figure is an exploded perspective view of the cover and switch assembly of the present invention. Figure 3A is a partial enlarged perspective view of the cover of the present invention. The fourth figure is a schematic diagram of the section IV-IV of the first figure. The fifth figure is a schematic cross-sectional view of the line segment V-V in the first figure. The sixth figure is a schematic diagram of the three-dimensional action of pressing the control element of the present invention. Figure 6A is a schematic diagram of the action of the section VIA-VIA line segment in Figure 6. The sixth figure B is a schematic diagram of the action of the section VIB-VIB line segment in the sixth figure. Fig. 6C is a schematic diagram of the action of the section VIC-VIC line segment in Fig.6. The seventh figure is a schematic diagram of the three-dimensional action of the rotation of the control element of the present invention. Figure 7A is a schematic cross-sectional view of Figure VIIA-VIIA. The eighth figure is a three-dimensional schematic diagram of the control member of the present invention having been rotated and locked. The ninth figure is a schematic cross-sectional view of the IX-IX line segment in the eighth figure. The tenth figure is a schematic cross-sectional view of the line Ⅹ－Ⅹ in the eighth figure. The eleventh figure is a schematic cross-sectional view of the XI-XI line segment in the eighth figure.

1: tank body

2: cover body

41: Stoma

7: Switch group

73: Breathable guide groove

Claims (10)

An airtight tank locking device (2), which includes: A tank body, one end of which is recessed to form a receiving groove; A cover body, the cover body is pulled apart from the tank body, one end of the cover body is recessed to form a groove and closes the storage groove when the cover body is assembled, and an assembly hole penetrates through the outer side of the cover body and communicates with the groove , And the assembling hole is located in the groove of the hole further surrounds a limit ring piece, and the ring wall of the limit ring piece is convexly provided with a plurality of stop parts, and a plurality of ventilation grooves are formed between each stop part and the stop part Road; In addition, the inner wall of the assembly hole is provided with a plurality of stop blocks, and each stop block is respectively provided with a convex stopper; And a switch assembly, which is installed in the assembly hole of the cover body, and the switch assembly includes a piston part and a control part. One end of the control part is inserted into the assembly hole from the outer side of the cover body. Two baffles and a joint post, the two baffles are arranged at intervals and surround the circumference of the joint post, and a card protrusion is respectively protruded at the ends of the two baffles, and a block is formed between the two baffles and the joint post. The air guide channel, and the outer peripheral surface of the control member is recessed with at least one air-permeable guide groove communicating with the assembly hole; the piston member is installed in the groove and inserted into the assembly hole with one end and assembled with the joint post; In addition, when the control member is pressed in the assembly hole, it is in an opening and closing mode. When the control member is pressed toward the piston member, and when the two stoppers are pressed against the limiting ring plate, the engagement column pushes the piston member toward the groove At this time, the storage groove, groove, each ventilating channel, assembly hole, and at least one ventilating guide groove are in communication with each other, and the air pressure in the storage groove and groove is equal to the outside air pressure, so that the tank body and The cover body can be pulled apart from each other; on the contrary, when the control member is displaced outwards, it will drive the displacement of the piston member and close the connection between the assembly hole and the groove, so that the air pressure in the tank body is different from the outside air pressure, the tank body and the cover It is not easy to pull apart and keep airtight; and the control part is in a locking mode when pivoting in the assembly hole. The limiting part restricts the pressing of the control member, thereby preventing the control member from being pressed again to form an opening and closing mode, so as to maintain the air tightness between the tank body and the cover body. Such as the airtight tank locking device (2) described in item 1 of the scope of patent application, wherein the piston member further includes a stopper portion and a pin portion, and the stopper portion faces the circle diameter of the side of the assembly hole Larger than the diameter of the assembly hole, a bayonet block is protruded on the outer peripheral surface of the plug part, and the engaging column of the control part is recessed with a slot at the end where the piston is inserted, and a corresponding bayonet block is provided for clamping An engaging hole communicates with the slot, and the piston part penetrates into the slot of the engagement column with a pin part and is buckled in the engagement hole with a bayonet block. For example, the airtight tank locking device (2) described in item 1 of the scope of patent application, wherein each stop block is further L-shaped and includes a first stop part and a second stop part, and each stop The first limiting portion of the block is connected to the second limiting portion by one end and is perpendicular to each other, and each stop block is further provided with a recessed portion arranged at each first limiting portion and close to the second limiting portion, and An inclined guide surface is formed at the corner of the other end of the first limit part of each stop block, and each convex limit part is arranged between each first limit part and each inclined guide surface and each recessed part. Each inclined guide surface guides the protrusions of the two blocking pieces into the recessed portions to be restricted, thereby preventing the control member from pivoting arbitrarily in the assembly hole. For example, the airtight tank locking device (2) described in item 2 of the scope of patent application, wherein each stop block is further L-shaped and includes a first stop part and a second stop part, and each stop The first limiting portion of the block is connected to the second limiting portion by one end and is perpendicular to each other, and each stop block is further provided with a recessed portion arranged at each first limiting portion and close to the second limiting portion, and An inclined guide surface is formed at the corner of the other end of the first limit part of each stop block, and each convex limit part is arranged between each first limit part and each inclined guide surface and each recessed part. Each inclined guide surface guides the protrusions of the two blocking pieces into the recessed portions to be restricted, thereby preventing the control member from pivoting arbitrarily in the assembly hole. For example, the airtight tank locking device (2) described in item 3 or item 4 of the scope of patent application, wherein a first concave portion and a second concave portion are formed on both sides of the card protrusion of the two blocking pieces, and each The distance from the bottom surface of the first recess to the end surface of each card protrusion is greater than the distance from the bottom surface of each second recess to the end surface of each card protrusion, and when the rotation of the control member in the assembly hole is switched to the locked state, each card protrusion is Inserted into each recessed portion, and each second recessed portion abuts against the stopper portion of each protrusion; and when the control member rotates in the assembly hole to switch to the opening and closing mode, the control member is pressed toward the groove to make each The second concave portion of the first limiting portion is attached to each protruding limiting portion for limiting. For example, the airtight tank locking device (2) described in any one of item 1 to item 4 of the scope of patent application, wherein a plurality of air holes are provided on the inner wall of the assembly hole, and each air hole is formed by the assembly hole The inner wall penetrates to the top surface of the cover, and each air hole is pressed by the control member to increase the air pressure balance between the tank body and the outside. As described in item 5 of the scope of patent application, the airtight tank locking device (2), wherein a plurality of air holes are provided on the inner wall of the assembly hole, and each air hole penetrates from the inner wall of the assembly hole to the top surface of the cover body , Each air hole increases the air pressure balance between the inside of the tank and the outside after the control member is pressed. As described in item 6 of the scope of patent application, the airtight tank locking device (2), wherein there is further a spring set on the outer circumference of the engaging column and located in the air guide channel, one end of the spring springs against the control member, and the spring The other end of the elbow springs against each blocking part, and the spring is reset after being pressed by the elastic force against the control member. The airtight tank locking device (2) described in item 7 of the scope of patent application, wherein there is further a spring set on the outer periphery of the engaging column and located in the air guiding channel, one end of the spring springs against the control member, and the spring The other end of the elbow springs against each blocking part, and the spring is reset after being pressed by the elastic force against the control member. For example, the airtight tank locking device (2) described in item 1 of the scope of patent application, wherein the length of the two blocking pieces from the end to the end surface of each card protrusion defines a T, and the length of the engaging column defines a t , And the comparison of the lengths of the two blocking pieces and the engagement post is T<t; in addition, the length of the limiting ring piece extending from the wall of the assembly hole plus the length of the blocking portion defines a D, and each block The length of the stop block extending from the hole wall of the assembly hole defines a d, and the length of the stop ring plus the stop portion is D>d compared with the extension length of each stop block; in addition, one end of the control piece is inserted In the assembly hole, and the other end of the control piece is exposed outside the assembly hole and forms a control handle.

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