A sealing cover

Abstract

The present invention belongs to the technical field of sealing covers, and particularly refers to a sealing cover, including a locking structure for driving a first cover body and a second cover body to approach or separate from each other; the locking structure includes: a placement groove is provided in the middle of the first cover body, at least two tilting rods are provided in the placement groove, the inner end of the tilting rod is provided in the placement groove, and the outer end of the tilting rod extends out of the placement groove and hooks the second cover body; a button assembly is also provided in the placement groove, and pressure is applied to the inner end of the tilting rod by the button assembly, so that the outer end of the tilting rod drives the second cover body to approach or leave the first cover body; the button assembly includes a pressing cap and a spring core assembly, and the pressing cap is locked by the spring core assembly when it is pressed for the first time, and is released by the spring core assembly when it is pressed again. The present invention simplifies the locking structure, thereby making processing and installation easier.

Description

Technical Field

[0001] The invention belongs to the technical field of sealing covers, in particular to a sealing cover. Background Art

[0002] The sealing cover is a cover applied to the sealed can, thereby forming a closed space with the sealed can. For example, the patent number is 2011205394938, and the patent name is an invention patent for a sealed can.

[0003] Although this patent has the characteristics of good sealing performance and convenient opening of the cover, its locking structure is achieved by the cooperation between the gear blocks and grooves and blocks and blocks. From the drawings of this patent, it can be seen that it requires at least three gears, and there are structures that cooperate with each other, so the structure is complicated. At the same time, the structure of the blocks and grooves is relatively fine, so the processing is relatively complicated. At the same time, the cooperation between the gears must be considered during installation, which is also relatively troublesome. Summary of the invention

[0004] The purpose of the present invention is to provide a sealing cover, whose locking structure is locked by a pressing cap and a spring core assembly. Compared with the existing structure, the present invention simplifies the locking structure, thereby making processing and installation easier, thereby solving the problem that the existing locking structure is relatively complicated.

[0005] The object of the present invention is achieved in that:

[0006] A sealing cover comprising

[0007] a first cover;

[0008] A second cover body, which is movably provided with the lower end of the first cover body;

[0009] A sealing ring, which is arranged on the periphery of the first cover body or the second cover body;

[0010] When the first cover body and the second cover body are close to each other by a certain distance, the sealing ring is squeezed by the first cover body and the second cover body to expand outward, thereby sealing the port of the container to be adapted;

[0011] A locking structure, used for driving the first cover body and the second cover body to approach or separate from each other;

[0012] The locking structure comprises:

[0013] A placement groove is provided in the middle of the first cover body, and at least two tilting rods are provided in the placement groove, the inner ends of the tilting rods are provided in the placement groove, and the outer ends of the tilting rods extend out of the placement groove 19 and hook the second cover body;

[0014] A button assembly is also provided in the placement groove, and pressure is applied to the inner end of the tilting rod through the button assembly, so that the outer end of the tilting rod drives the second cover body to approach or leave the first cover body;

[0015] The button assembly comprises a pressing cap and a spring core assembly. The pressing cap is locked by the spring core assembly when it is pressed for the first time and is released by the spring core assembly when it is pressed again.

[0016] On the basis of the above scheme, further improved or preferred schemes also include:

[0017] Preferably, the button assembly further comprises a clamping portion arranged at the bottom of the pressing cap and a clamping piece arranged in the placement groove, the clamping piece is provided with a clamping groove at the upper end, and a spring 1 is arranged at the lower part of the clamping piece;

[0018] The clamping portion cooperates with the clamping piece to lock the clamping portion when pressed for the first time, and release the clamping portion when pressed again.

[0019] Preferably, the placement slot is provided with a limiting hole, and the clamping member is movably disposed in the limiting hole;

[0020] The upper end of the clamping member is symmetrically provided with clamping hooks, and the clamping groove is formed between the clamping hooks. The clamping hooks extend out of the limiting holes, and the width dimension of the clamping hooks when opened is greater than the width dimension of the limiting holes.

[0021] When the clamping portion is forced to move downward, it will drive the clamping piece to move downward so that the inner wall of the limiting hole applies pressure to the clamping hook, thereby making the clamping hook cover the outer side of the clamping portion and making the clamping portion clamped in the clamping groove.

[0022] Preferably, a limiting portion is provided at the bottom of the outer end of the hook, and a slot is provided on the inner wall of the limiting hole, and the limiting portion is engaged in the slot, thereby limiting the movement of the connecting member.

[0023] Preferably, a second inclined surface is formed on the outer side of the clamping portion, and the first spring is arranged between the clamping piece and the limiting hole, and a convex strip is arranged on the inner wall of the clamping hook;

[0024] When the limiting part is engaged in the slot, the spring 1 is in a compressed state due to the force, and the pressing cap is pressed to make the inclined surface 2 press the convex strip downward, so that the upper end of the hook moves outward and the bottom of the hook moves inward, so that the limiting part is disengaged from the slot, and the spring 1 pushes the clamping part to reset.

[0025] Preferably, a protrusion is provided on one side of the clamping member, a groove is provided in the limiting hole, and the protrusion is movably arranged in the groove;

[0026] A guide piece is rotatably arranged on the other side of the clamping piece, a guide platform is arranged in the limiting hole, and a slope 1 is formed on the upper end of the guide platform;

[0027] The lower end of the guide member is located at the upper end of the inclined surface one, and the clamping member is forced to move downward until the guide member contacts the inclined surface one, and the guide member rotates along the inclined surface one.

[0028] Preferably, a connecting column is provided between the clamping portion and the pressing cap, and the width of the connecting column is smaller than the width of the end where the clamping portion is connected to the connecting column;

[0029] A clamping protrusion is arranged at one end of the clamping hook away from the clamping piece. When the clamping hook covers the outside of the clamping portion, the clamping protrusion is clamped at the connection between the clamping portion and the connecting column.

[0030] Preferably, the placement slot is provided with a mounting platform, and the mounting platform is provided with a mounting hole, a mounting piece is provided in the mounting hole, and the mounting piece is provided with the limiting hole;

[0031] The side wall of the mounting platform is provided with a clamping hole which is in communication with the mounting hole. Both sides of the mounting piece are provided with mounting protrusions which are clamped in the clamping hole.

[0032] Preferably, the placement slot is provided with a limiting slot, and a connecting block is provided at the lower end of the tilting rod, the connecting block is rotatably arranged in the limiting slot, and the tilting rod swings around the connecting block as the center;

[0033] A second spring is arranged between the first cover body and the second cover body. When the clamping portion is clamped in the clamping groove, the second spring is in a compressed state due to the force, and is released by the bouncing core assembly by pressing the pressing cap. The second spring pushes the second cover body to reset and drives the tilting rod to swing, so that the tilting rod pushes the pressing cap to reset.

[0034] Preferably, a movable hole is opened on the side wall of the placement groove, the lower end of the pressing cap is movably arranged in the placement groove, and a buckle is arranged at the lower end of the pressing cap, and the buckle is movably arranged in the movable hole.

[0035] Or / and, the second cover body is provided with a connecting groove, and the side wall of the connecting groove is recessed outward to form a movable groove, the lower end of the first cover body is movably arranged in the connecting groove and a connecting strip is arranged on the outer side of the first cover body, and the connecting strip is movably arranged in the movable groove.

[0036] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0037] 1. The locking structure of the present invention realizes locking by pressing the cap and the spring core assembly, and realizes locking by the snap-fitting part being snap-fitted into the snap-fitting groove. Compared with the existing structure, the present invention simplifies the locking structure, thereby making the processing and installation easier.

[0038] 2. The present invention guides the moving track of the clamping part when it moves through the cooperation between the protrusion and the groove rail, thereby enabling the clamping part to move vertically.

[0039] At the same time, the cooperation between the guide piece and the guide platform plays a certain buffering and limiting role, thereby preventing the bottom of the clamping piece from directly colliding with the limiting hole.

[0040] 3. The present invention limits the position of the clamping part by clamping the clamping protrusion at the connection between the clamping part and the connecting column, thereby preventing the clamping part from moving upward, thereby preventing the clamping part from being separated from between the clamping hooks and achieving better sealing.

[0041] 4. The present invention separates the related structure of the clamping member from the first cover body through the design of the mounting member, rather than directly connecting the clamping member to the first cover body. Therefore, when the related structure of the clamping member is broken, the mounting member can be directly taken out for repair, rather than repairing it together with the first cover body, which is more convenient.

[0042] 5. One end of the tilting rod of the present invention is arranged on the second cover body, and the other end passes through the first cover body and is located at the lower end of the pressing cap, that is, it is connected with the upper, middle and second cover bodies, so only one spring is needed to cooperate with it. Compared with the existing multi-spring structure, the present invention simplifies the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a structural diagram of the present invention;

[0044] Figure 2 It is a schematic cross-sectional structural diagram of the present invention when it is unlocked;

[0045] Figure 3 It is a schematic cross-sectional structural diagram of the locking device of the present invention;

[0046] Figure 4 yes Figure 3 The enlarged structural diagram of A in the middle;

[0047] Figure 5 It is a simplified structural diagram of the cross-section of the mounting parts and the clamping parts;

[0048] Figure 6 It is a simplified structural diagram of the installation parts and the card-connecting parts;

[0049] Figure 7 It is a simplified structural diagram of the installation parts;

[0050] Figure 8 It is a schematic diagram of the structure of the splitting of the present invention;

[0051] Fig. 9 It is a simplified structural diagram of the push cap;

[0052] Fig.10 It is one of the structural diagrams of the first cover;

[0053] Fig.11 This is the second structural diagram of the first cover;

[0054] Fig.12 A simplified structural diagram of the second cover body and the tilting rod;

[0055] Fig.13 It is a simplified structural diagram of the tilting lever.

[0056] In the figure: 1-first cover; 11-clamping member; 111-guide member; 1111-installation column;

[0057] 1112-guide column; 112-bump; 113-clip groove; 1131-boss; 12-connecting strip;

[0058] 13-limiting hole; 131-guide platform; 132-inclined surface 1; 133-groove rail; 134-column;

[0059] 135-card slot; 14-card hook; 141-card connection protrusion; 142-convex strip; 143-limiting protrusion;

[0060] 15-spring 1; 16-mounting platform; 161-mounting hole; 162-clamping hole; 17-mounting piece;

[0061] 171-installation protrusion; 18-limiting groove; 181-limiting platform; 182-limiting strip;

[0062] 19-placement slot; 191-moving hole; 192-hole; 2-pressing cap; 21-clamping part;

[0063] 211- inclined surface 2; 22- connecting column; 23- buckle; 3- second cover body; 31- connecting groove;

[0064] 32-moving groove; 33-clip strip; 34-connecting platform; 35-connecting hole; 4-sealing ring;

[0065] 41-groove; 5-spring 2; 6-tilt rod; 61-connecting block; 62-installation part. DETAILED DESCRIPTION

[0066] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings.

[0067] like Figure 1-Figure 4 As shown, a sealing cover comprises a first cover body 1 and a second cover body 3, wherein the second cover body 3 is movably disposed with the lower end of the first cover body 1.

[0068] At the same time, the sealing cover also includes a sealing ring 4, and the sealing ring 4 is arranged on the periphery of the first cover body 1 or the second cover body 3. Therefore, when the first cover body 1 and the second cover body 3 are close to each other by a certain distance, the sealing ring 4 is squeezed by the first cover body 1 and the second cover body 3 and expands outward, thereby sealing the container port to be adapted.

[0069] The sealing cover also includes a locking structure, and the locking structure is used to drive the first cover body 1 and the second cover body 3 to approach or separate from each other.

[0070] The locking structure includes:

[0071] A placement groove 19 is provided in the middle of the first cover body 1 , and at least two tilting rods 6 are provided in the placement groove 19 . Meanwhile, the inner ends of the tilting rods 6 are provided in the placement groove 19 , and the outer ends of the tilting rods 6 extend out of the placement groove 19 and hook the second cover body 3 .

[0072] Furthermore, a button assembly is disposed in the placement groove 19 , and pressure is applied to the inner end of the tilting rod 6 through the button assembly, so that the outer end of the tilting rod 6 drives the second cover body 3 to approach or leave the first cover body 1 .

[0073] At the same time, the button assembly includes a pressing cap 2 and a spring core assembly. The pressing cap 2 is locked by the spring core assembly when it is pressed for the first time, and is released by the spring core assembly when it is pressed again.

[0074] Therefore, in actual use, when the push cap 2 is pressed and moved downward, it will be locked by the bouncing core assembly. At this time, the inner end of the lift rod 6 is subjected to force so that the outer end of the lift rod 6 drives the second cover body 3 to approach the first cover body 1, and the sealing ring 4 is squeezed by the first cover body 1 and the second cover body 3 to expand outward, thereby sealing the container port to be adapted.

[0075] Moreover, compared with the existing gear structure, the present invention simplifies the locking structure, thereby making the processing and installation easier.

[0076] The structure between the second cover body 3 and the sealing ring 4 is as follows: first, a clamping strip 33 is arranged on the outer side of the second cover body 3, and a groove 41 is opened on the inner side of the sealing ring 4, and the clamping strip 33 is clamped in the groove 41 to connect the second cover body 3 and the sealing ring 4.

[0077] like Figure 2-Figure 4 As shown, the button assembly also includes a clamping portion 21 disposed at the bottom of the pressing cap 2 and a clamping member 11 disposed in the placement groove 19, and a clamping groove 113 is provided at the upper end of the clamping member 11, and a spring 15 is provided at the lower part of the clamping member 11.

[0078] Therefore, in actual use, the clamping portion 21 cooperates with the clamping member 11 to lock the clamping portion 21 when pressed for the first time, and release the clamping portion 21 when pressed again.

[0079] The specific structure of locking the clamping part 21 at the same time is: the placement groove 19 is provided with a limiting hole 13, and the clamping member 11 is movably arranged in the limiting hole 13. Figure 4-Figure 7As shown, first, hooks 14 are symmetrically arranged on the upper end of the clamping member 11 , and clamping grooves 113 are formed between the hooks 14 . Meanwhile, the hooks 14 extend out of the limiting holes 13 , and the width of the hooks 14 when opened is greater than the width of the limiting holes 13 .

[0080] Therefore, in actual use, when the engaging portion 21 is forced to move downward, the engaging member 11 is driven to move downward, so that the inner wall of the limiting hole 13 applies pressure to the hook 14, and then the hook 14 covers the outside of the engaging portion 21, and the engaging portion 21 is engaged in the engaging groove 113.

[0081] In order to prevent the clamping portion 21 from being separated, a connecting column 22 is provided between the clamping portion 21 and the pressing cap 2 , and the width of the connecting column 22 is smaller than the width of the end where the clamping portion 21 and the connecting column 22 are connected.

[0082] In addition, a locking protrusion 141 is provided at one end of the hook 14 away from the locking member 11. Therefore, when the hook 14 covers the outside of the locking portion 21, the locking protrusion 141 is locked at the connection between the locking portion 21 and the connecting column 22, thereby limiting the position of the locking portion 21 and preventing the locking portion 21 from moving upward. Therefore, it can prevent the locking portion 21 from detaching from between the hooks 14 and achieve better sealing.

[0083] like Figure 4 As shown, how to indicate that the locking portion 21 has been locked is that a limiting component is provided between the locking portion 21 and the placement groove 19, and the limiting component includes a limiting portion 143 provided at the bottom of the outer end of the hook 14, and a slot 135 opened on the inner wall of the limiting hole 13, and the limiting portion 143 is engaged in the slot 135, thereby limiting the movement of the locking component 11.

[0084] As shown in the figure, the structure for releasing the limit is as follows: first, a second inclined surface 211 is formed on the outer side of the clamping portion 21, a spring 15 is arranged between the clamping member 11 and the limit hole 13, and a convex strip 142 is arranged on the inner wall of the hook 14.

[0085] Therefore, when the limiting portion 143 is engaged in the slot 135, the spring 15 is in a compressed state due to the force, and then the pressing cap 2 is pressed to cause the inclined surface 211 to press the convex strip 142 downward, thereby causing the upper end of the hook 14 to move outward and the bottom of the hook 14 to move inward, so that the limiting portion 143 is disengaged from the slot 135, and then the elasticity of the spring 15 itself is used to push the connecting member 11 to return to its original position.

[0086] The installation structure of the spring 15 is as follows: first, a column 134 is provided in the limiting hole 13 , so that during installation, one end of the spring 15 is inserted into the clamping member 11 , and the other end of the spring 15 is sleeved on the outside of the column 134 .

[0087] Furthermore, the engaging groove 113 is provided with a boss 1131 . When the engaging portion 21 moves into the engaging groove 113 , the boss 1131 can contact the engaging portion 21 , thereby playing a certain limiting role.

[0088] like Figure 5-Figure 7 As shown, a protrusion 112 is provided on one side of the clamping member 11 , and a groove 133 is provided in the limiting hole 13 , and the protrusion 112 is movably disposed in the groove 133 .

[0089] Therefore, in actual use, the protrusion 112 can be moved into the groove 133, so that the clamping member 11 can be moved into the limiting hole 13, and the moving trajectory of the clamping member 11 can be guided when the clamping member 11 moves, so that the clamping member 11 can move vertically.

[0090] At the same time, a guide member 111 is rotatably provided on the other side of the clamping member 11 , and a guide platform 131 is provided in the limiting hole 13 , and an inclined surface 132 is formed on the upper end of the guide platform 131 , and the lower end of the guide member 111 is located at the upper end of the inclined surface 132 .

[0091] Therefore, in actual use, when the clamping member 11 is forced to move downward until the guide member 111 contacts the inclined surface 132, the guide member 111 will rotate along the inclined surface 132, thereby playing a certain buffering and limiting role, thereby preventing the bottom of the clamping member 11 from directly colliding with the limiting hole 13.

[0092] The installation structure of the guide member 111 includes: first, a mounting column 1111 is provided at the upper end of one side of the guide member 111, and the mounting column 1111 is penetrated in the clamping member 11, and at the same time, a guide column 1112 is provided at the lower end of the other side of the guide member 111, and the lower end of the guide column 1112 is located at the upper end of the inclined surface 132, and when the clamping member 11 is forced to move downward until the guide column 1112 contacts the inclined surface 132, the guide column 1112 will drive the guide member 111 to rotate around the mounting column 1111 as the center along the inclined surface 132.

[0093] like Figure 1-Figure 7 As shown, the structure of the limiting hole 13 is as follows: first, the placement groove 19 is provided with a mounting platform 16, and the mounting platform 16 has a mounting hole 161, and a mounting member 17 is provided in the mounting hole 161, and the mounting member 17 has a limiting hole 13.

[0094] Moreover, as for the structure between the mounting platform 16 and the mounting member 17, the mounting platform 16 has a side wall provided with a snap-in hole 162 communicating with the mounting hole 161, and mounting protrusions 171 are provided on both sides of the mounting member 17, and the mounting protrusions 171 are snap-fitted into the snap-in holes 162, thereby connecting the mounting platform 16 and the mounting member 17.

[0095] Moreover, the installation member 17 is provided so as to separate the related structure of the clamping member 11 from the first cover body 1, rather than the clamping member 11 being directly connected to the first cover body 1. Therefore, when the related structure of the clamping member 11 is broken, the installation member 17 can be directly taken out for repair, rather than being repaired together with the first cover body 1, which is more convenient.

[0096] like Figure 1-Figure 13 As shown, the reset structure of the first cover body 1 and the pressing cap 2 is as follows: firstly, a spring 5 is arranged between the first cover body 1 and the second cover body 3.

[0097] Therefore, in actual use, when the clamping portion 21 is clamped in the clamping groove 113, the spring 2 5 is in a compressed state due to the force, and then released by the bouncing core assembly by pressing the pressing cap 2. At this time, since there is no lock, the spring 2 5 pushes the second cover body 3 to return to its original position due to its own elasticity and drives the tilting rod 6 to swing, so that the tilting rod 6 pushes the pressing cap 2 to return to its original position.

[0098] Moreover, compared with the existing multi-spring structure, the present invention uses the structure of the tilting rod 6, so only one spring 5 is needed, thereby simplifying the structure.

[0099] The installation structure of the spring 2 5 is as follows: the second cover 3 is preferably provided with a connecting platform 34 , and the spring 2 5 is sleeved on the outside of the connecting platform 34 .

[0100] As shown in the figure, the swing structure of the tilting rod 6 is: first, the first cover body 1 is provided with a limiting groove 18, and a connecting block 61 is provided at the lower end of the tilting rod 6, and the connecting block 61 is rotatably set in the limiting groove 18, and the tilting rod 6 swings around the connecting block 61 as the center.

[0101] The specific structure of the limiting groove 18 is as follows: firstly, the groove 19 is placed to respectively set a limiting platform 181 and a limiting strip 182 , and the limiting groove 18 is formed between the limiting platform 181 and the limiting strip 182 .

[0102] Meanwhile, the mounting structure of the tilting rod 6 is that first, the end of the tilting rod 6 connected to the second cover body 3 is provided with two mounting portions 62, and the first cover body 1 and the second cover body 3 are respectively provided with a hole 192 and a connecting hole 35. Therefore, during installation, the mounting portion 62 passes through the hole 192 and is arranged in the connecting hole 35.

[0103] like Figure 8-Figure 13 As shown, the moving structure of the pressing cap 2 is as follows: first, a moving hole 191 is opened on the side wall of the placement groove 19, and a buckle 23 is provided at the lower end of the pressing cap 2.

[0104] Therefore, in actual use, the lower end of the pressing cap 2 is moved and disposed in the placement groove 19 , and the buckle 23 is moved and disposed in the moving hole 191 .

[0105] Meanwhile, the moving structure of the first cover body 1 is as follows: first, the second cover body 3 is provided with a connecting groove 31, and the side wall of the connecting groove 31 is recessed outward to form a moving groove 32, and at the same time, a connecting strip 12 is provided on the outer side of the first cover body 1.

[0106] Therefore, in actual use, the lower end of the first cover body 1 is moved and disposed in the connecting groove 31 , and the connecting bar 12 is moved and disposed in the moving groove 32 .

[0107] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealing cover, comprising A first cover body (1); A second cover body (3) movably disposed with the lower end of the first cover body (1); A sealing ring (4) arranged on the periphery of the first cover body (1) or the second cover body (3); When the first cover body (1) and the second cover body (3) are close to each other at a certain distance, the sealing ring (4) is squeezed by the first cover body (1) and the second cover body (3) to expand outwards, thereby sealing the port of the container to be adapted; A locking structure, used for driving the first cover body (1) and the second cover body (3) to move closer to or away from each other; Features: The locking structure comprises: A placement groove (19) is provided in the middle of the first cover body (1), and at least two tilting rods (6) are provided in the placement groove (19), the inner ends of the tilting rods (6) are arranged in the placement groove (19), and the outer ends of the tilting rods (6) extend out of the placement groove (19) and hook the second cover body (3); A button assembly is also provided in the placement groove (19), and pressure is applied to the inner end of the tilting rod (6) through the button assembly, so that the outer end of the tilting rod (6) drives the second cover body (3) to approach or leave the first cover body (1); The button assembly comprises a pressing cap (2) and a spring core assembly, wherein the pressing cap (2) is locked by the spring core assembly when pressed for the first time and is released by the spring core assembly when pressed again; The placement groove (19) is provided with a limiting groove (18), and a connecting block (61) is provided at the lower end of the tilting rod (6). The connecting block (61) is rotatably arranged in the limiting groove (18), and the tilting rod (6) swings around the connecting block (61) as the center.

2. A sealing cover according to claim 1, characterized in that: The button assembly further comprises a clamping portion (21) arranged at the bottom of the pressing cap (2) and a clamping member (11) arranged in the placement groove (19); a clamping groove (113) is provided at the upper end of the clamping member (11), and a spring 1 (15) is provided at the lower part of the clamping member (11); The clamping portion (21) cooperates with the clamping piece (11) so that the clamping portion (21) is locked when pressed for the first time, and is released when pressed again.

3. A sealing cover according to claim 2, characterized in that: The placement groove (19) is provided with a limiting hole (13), and the clamping member (11) is movably disposed in the limiting hole (13); The upper end of the clamping member (11) is symmetrically provided with clamping hooks (14), and the clamping grooves (113) are formed between the clamping hooks (14), the clamping hooks (14) extend out of the limiting holes (13), and the width dimension of the clamping hooks (14) when opened is greater than the width dimension of the limiting holes (13); When the clamping portion (21) is forced to move downward, it drives the clamping member (11) to move downward, so that the inner wall of the limiting hole (13) applies pressure to the clamping hook (14), thereby causing the clamping hook (14) to cover the outside of the clamping portion (21), and causing the clamping portion (21) to be clamped in the clamping groove (113).

4. A sealing cover according to claim 3, characterized in that: A limiting portion (143) is provided at the bottom of the outer end of the hook (14), and a clamping groove (135) is provided on the inner wall of the limiting hole (13), wherein the limiting portion (143) is clamped in the clamping groove (135), thereby limiting the movement of the clamping member (11).

5. A sealing cover according to claim 4, characterized in that: The outer side of the clamping portion (21) is formed with a second inclined surface (211), and the first spring (15) is arranged between the clamping piece (11) and the limiting hole (13), and a convex strip (142) is arranged on the inner wall of the clamping hook (14); When the limiting portion (143) is engaged in the slot (135), the spring 1 (15) is in a compressed state due to the force applied, and the pressing cap (2) is pressed so that the inclined surface 2 (211) presses the convex strip (142) downward, thereby causing the upper end of the hook (14) to move outward, and the bottom of the hook (14) to move inward, so that the limiting portion (143) is disengaged from the slot (135), and the spring 1 (15) pushes the connecting member (11) to return to its original position.

6. A sealing cover according to claim 3, 4 or 5, characterized in that: A protrusion (112) is provided on one side of the clamping member (11), a groove rail (133) is provided in the limiting hole (13), and the protrusion (112) is movably arranged in the groove rail (133); A guide member (111) is rotatably provided on the other side of the clamping member (11), a guide platform (131) is provided in the limiting hole (13), and an inclined surface (132) is formed on the upper end of the guide platform (131); The lower end of the guide member (111) is located at the upper end of the inclined surface one (132), and the clamping member (11) is forced to move downward until the guide member (111) contacts the inclined surface one (132), and the guide member (111) rotates along the inclined surface one (132).

7. A sealing cover according to claim 3, 4 or 5, characterized in that: A connecting column (22) is provided between the clamping portion (21) and the pressing cap (2), and the width of the connecting column (22) is smaller than the width of the end where the clamping portion (21) and the connecting column (22) are connected; A clamping protrusion (141) is provided at one end of the clamping hook (14) away from the clamping member (11); when the clamping hook (14) covers the outside of the clamping portion (21), the clamping protrusion (141) is clamped at the connection between the clamping portion (21) and the connecting column (22).

8. A sealing cover according to claim 3, 4 or 5, characterized in that: The placement groove (19) is provided with a mounting platform (16), and the mounting platform (16) is provided with a mounting hole (161), a mounting member (17) is provided in the mounting hole (161), and the mounting member (17) is provided with the limiting hole (13); The side wall of the mounting platform (16) is provided with a clamping hole (162) which communicates with the mounting hole (161); mounting protrusions (171) are provided on both sides of the mounting member (17), and the mounting protrusions (171) are clamped in the clamping hole (162).

9. A sealing cover according to any one of claims 2 to 5, characterized in that: The tilting rod (6) is provided with a mounting portion (62) connected to the second cover body (3), and the first cover body (1) and the second cover body (3) are respectively provided with a hole (192) and a connecting hole (35), and the mounting portion (62) passes through the hole (192) and is arranged in the connecting hole (35); A second spring (5) is provided between the first cover body (1) and the second cover body (3). When the clamping portion (21) is clamped in the clamping groove (113), the second spring (5) is in a compressed state due to the force applied, and is released by the spring core assembly by pressing the pressing cap (2). The second spring (5) pushes the second cover body (3) to return to its original position and drives the tilting rod (6) to swing, so that the tilting rod (6) pushes the pressing cap (2) to return to its original position.

10. A sealing cover according to any one of claims 1 to 5, characterized in that: The side wall of the placement groove (19) is provided with a movable hole (191), the lower end of the pressing cap (2) is movably arranged in the placement groove (19), and a buckle (23) is arranged at the lower end of the pressing cap (2), and the buckle (23) is movably arranged in the movable hole (191); Or / and, the second cover body (3) is provided with a connecting groove (31), and the side wall of the connecting groove (31) is outwardly recessed to form a movable groove (32), the lower end of the first cover body (1) is movably arranged in the connecting groove (31), and a connecting strip (12) is arranged on the outer side of the first cover body (1), and the connecting strip (12) is movably arranged in the movable groove (32).

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