Sucker locking structure
By designing the transmission connection between the handle assembly and the suction cup, the automatic downward and bulge of the suction cup is achieved by using the concave and convex structure, the problem of labor-intensive operation of the suction cup in the prior art is solved, and the convenient suction fit and disengagement between the suction cup and the ground is achieved.
Patent Information
- Application Number
- CN202422147113.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-03
AI Technical Summary
In the prior art, manual pressing and pressure relief is required when suction cups are suctioned and connected to the ground, resulting in laborious operation of users and lack of convenience.
A suction cup locking structure is designed, which is connected to the suction cup through a handle assembly, and the concave and convex top wall and concave bottom wall are used to integrate and separate the suction cup to realize automatic downward pressure and bulge, and simplify the operation process.
It realizes efficient and convenient operation of suction cups and ground suction, reduces user operation strength and improves the convenience of use.
Smart Images
Figure CN223062898U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of suction cups, in particular to a suction cup locking structure. Background Art
[0002] In some application devices, many use the suction cup method to fix on the ground or wall. For example, the sit-up assistor uses a suction cup to fix with the ground.
[0003] Currently, when the suction cups of some application devices are suctioned to and detached from the ground, usually manual pressing is used to fix the suction cup with the ground, and manual pressure relief is used to detach the suction cup from the ground. This method makes it more laborious for users to operate, so the convenience is not high. Summary of the Utility Model
[0004] The utility model aims to provide a suction cup locking structure to solve the problem that when the suction cups of some application devices are suctioned to and detached from the ground, usually manual pressing is used to fix the suction cup with the ground, and manual pressure relief is used to detach the suction cup from the ground. This method makes it more laborious for users to operate, so the convenience is not high.
[0005] The technical solution adopted by the utility model to solve the technical problem is as follows: A suction cup locking structure includes a suction cup and a handle assembly; the handle assembly is in transmission connection with the suction cup, and the handle assembly is used to drive the suction cup to lift and lower; the handle assembly includes a handle rod, a jacking shell, a lifting shell and a connecting rod. The handle rod is connected to the jacking shell. The lifting shell is located inside the top of the jacking shell. The lifting shell is connected with the connecting rod. The lifting shell is connected to the suction cup through the connecting rod. A circle of concave-convex top wall is provided at the top end of the jacking shell. A circle of concave-convex bottom wall is provided on the periphery of the lifting shell. The concave-convex top wall is fitted with the concave-convex bottom wall.
[0006] In some embodiments, a number of concave arc grooves are annularly distributed on the concave-convex top wall. The same number of arc protrusions as the concave arc grooves are annularly distributed on the concave-convex bottom wall. Each concave arc groove on the concave-convex top wall is respectively fitted with each arc protrusion on the concave-convex bottom wall.
[0007] In some embodiments, limiting blocks are respectively provided on both sides of the inner surface part of the jacking shell. Limiting grooves are respectively opened on both sides of the outer surface part of the lifting shell. The limiting blocks on both sides of the inner surface part of the jacking shell are respectively located in the limiting grooves on both sides of the outer surface part of the lifting shell.
[0008] In some embodiments, first retaining walls are respectively formed on both sides of the concave-convex top wall, and the first retaining walls on both sides of the concave-convex top wall are symmetrically arranged; second retaining walls are respectively formed on both sides of the concave-convex bottom wall, and the second retaining walls on both sides of the concave-convex bottom wall are symmetrically arranged; when the concave-convex top wall and the concave-convex bottom wall are fitted together, the first retaining walls on both sides of the concave-convex top wall and the second retaining walls on both sides of the concave-convex bottom wall are used for corresponding abutment.
[0009] In some embodiments, a metal disc is fixedly wrapped inside the suction cup, and the connecting rod is connected to the suction cup by being fixed to the metal disc.
[0010] In some embodiments, the opposite end of the handle rod connected to the lifting shell is set as the hand-held end, and a hand-squeezing block is provided at the hand-held end of the handle rod.
[0011] In some embodiments, a pull bar is provided on the side of the suction cup.
[0012] In some embodiments, a first transverse hole is horizontally penetrated through the top side of the connecting rod, and a second transverse hole is horizontally penetrated through the top side of the lifting shell; when the top of the connecting rod is located inside the top of the lifting shell, the first transverse hole on the top side of the connecting rod corresponds to the second transverse hole on the top side of the lifting shell; the first transverse hole on the top side of the connecting rod and the second transverse hole on the top side of the lifting shell are jointly inserted by a positioning pin, one end of the positioning pin is larger, and the larger end of the positioning pin is in interference fit with one end of the second transverse hole, so that the top of the connecting rod is fixedly connected inside the top of the lifting shell.
[0013] In some embodiments, a first oil groove is provided on the concave-convex top wall at the top end of the lifting shell, and a second oil groove is provided on the bottom end surface of the lifting shell.
[0014] Compared with the prior art, the beneficial effects of the present utility model are:
[0015] In this utility model, the user can drive the jacking shell to rotate in one direction by holding the handle rod. When the jacking shell rotates in one direction, the concave structure of the concave-convex top wall engages with the convex structure of the concave-convex bottom wall on the lifting shell. Thus, when the convex structure of the concave-convex top wall on the jacking shell contacts the convex structure of the concave-convex bottom wall on the lifting shell, the state where the jacking shell jacks up the lifting shell changes to the state where the concave structure of the concave-convex top wall on the jacking shell engages with the convex structure of the concave-convex bottom wall on the lifting shell. At this time, the lifting shell will descend by a certain distance value. During the process of the lifting shell descending by a certain distance value, the connecting rod drives the suction cup to press down and fit completely with the ground. Thus, the suction cup is pressed down from the bulging state to fit completely with the ground, and the inside of the suction cup is depressurized to disengage from the ground suction. The user can drive the jacking shell to rotate in another direction by holding the handle rod. When the jacking shell rotates in another direction, the convex structure of the concave-convex top wall contacts the convex structure of the concave-convex bottom wall on the lifting shell to make the jacking shell jack up the lifting shell. Thus, the state where the concave structure of the concave-convex top wall on the jacking shell engages with the convex structure of the concave-convex bottom wall on the lifting shell changes to the state where the convex structure of the concave-convex top wall on the jacking shell contacts the convex structure of the concave-convex bottom wall on the lifting shell to make the jacking shell jack up the lifting shell. At this time, the lifting shell will rise by a certain distance value. During the process of the lifting shell rising by a certain distance value, the connecting rod drives the suction cup to bulge to generate pressure inside and suck to the ground. Through such a setting, it enables the user to effectively drive the suction cup to press down and disengage from the ground suction and effectively drive the suction cup to bulge and suck to the ground by operating the handle assembly, and the usage method is efficient and convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 Schematic diagram of the structure in the state where the concave structure of the concave-convex top wall and the convex structure of the concave-convex bottom wall in the suction cup locking structure are engaged;
[0017] Figure 2 Schematic diagram of the structure in the state where the convex structure of the concave-convex top wall and the convex structure of the concave-convex bottom wall in the suction cup locking structure are in contact;
[0018] Figure 3 Schematic diagram of the structure in the state where some parts in the suction cup locking structure are in a separated state;
[0019] Figure 4 Schematic diagram of the structure in the state of the bottom end face view of the jacking shell of the suction cup locking structure;
[0020] Figure 5 Exploded structure schematic diagram of the suction cup locking structure;
[0021] Figure 6 Partial structure schematic diagram of the application device;
[0022] Figure 7 Schematic diagram of the structure where the suction cup locking structure is installed on the application device;
[0023] Figure 8 It is a schematic structural diagram of the suction cup locking structure installed on the application device with some parts in a split state.
[0024] Explanation of reference numerals:
[0025] 100, suction cup locking structure; 10, suction cup; 101, pull bar; 102, metal disc; 20, handle assembly; 201, handle rod; 2011, hand pinch block; 202, lifting shell; 2021, concave-convex top wall; 20211, concave arc groove; 20212, first retaining wall; 2022, limiting block; 2023, first oil groove; 2024, second oil groove; 203, lifting shell; 2031, concave-convex bottom wall; 20311, arc protrusion; 20312, second retaining wall; 2032, limiting groove; 2033, second transverse hole; 204, connecting rod; 2041, first transverse hole; 205, positioning pin; 200, application device; 2001, supporting plate; 20011, inner groove; 200111, supply perforation; 200112, flat pad; 2002, spring. Detailed implementation manners
[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0027] In addition, in the present invention, the descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.
[0028] Please refer to Figures 1 to 5As shown in the figure, the present utility model provides the following technical solution: a sucker locking structure 100, including a sucker 10 and a handle assembly 20; the handle assembly 20 is in driving connection with the sucker 10, and the handle assembly 20 is used to drive the sucker 10 to move up and down; the handle assembly 20 includes a handle rod 201, a jacking shell 202, a lifting shell 203 and a connecting rod 204. The handle rod 201 is connected to the jacking shell 202. The lifting shell 203 is located inside the top of the jacking shell 202. The lifting shell 203 is connected with a connecting rod 204. The lifting shell 203 is connected to the sucker 10 through the connecting rod 204. A circle of concave-convex top wall 2021 is provided at the top of the jacking shell 202, and a circle of concave-convex bottom wall 2031 is provided on the periphery of the lifting shell 203. The concave-convex top wall 2021 is fitted with the concave-convex bottom wall 2031.
[0029] In the suction cup locking structure 100 provided in this embodiment, when the user manually rotates the handle assembly 20 in one direction to drive the suction cup 10 to press down and disengage from the ground, the user can drive the lifting shell 202 to rotate in one direction by holding the handle rod 201. When the lifting shell 202 rotates in one direction, the concave structure of the concave and convex top wall 2021 is engaged with the convex structure of the concave and convex bottom wall 2031 on the lifting shell 203. Thus, when the convex structure of the concave and convex top wall 2021 on the lifting shell 202 contacts the convex structure of the concave and convex bottom wall 2031 on the lifting shell 203, the state where the lifting shell 202 lifts the lifting shell 203 changes to a state where the concave structure of the concave and convex top wall 2021 on the lifting shell 202 is engaged with the convex structure of the concave and convex bottom wall 2031 on the lifting shell 203. At this time, the lifting shell 203 will drop by a distance value. During the process of the lifting shell 203 dropping by a distance value, the suction cup 10 is driven to press down and fit completely with the ground through the connecting rod 204. Thus, the suction cup 10 is pressed down from the raised state to fit completely with the ground, and the inside of the suction cup 10 is depressurized to disengage from the ground. When the user manually rotates the handle assembly 20 in the other direction to drive the suction cup 10 to bulge and suck to the ground, the user can drive the lifting shell 202 to rotate in the other direction by holding the handle rod 201. When the lifting shell 202 rotates in the other direction, the convex structure of the concave and convex top wall 2021 contacts the convex structure of the concave and convex bottom wall 2031 on the lifting shell 203 to make the lifting shell 202 lift the lifting shell 203. Thus, the state where the concave structure of the concave and convex top wall 2021 on the lifting shell 202 is engaged with the convex structure of the concave and convex bottom wall 2031 on the lifting shell 203 changes to a state where the convex structure of the concave and convex top wall 2021 on the lifting shell 202 contacts the convex structure of the concave and convex bottom wall 2031 on the lifting shell 203 to make the lifting shell 202 lift the lifting shell 203. At this time, the lifting shell 203 will rise by a distance value. During the process of the lifting shell 203 rising by a distance value, the suction cup 10 is driven to bulge through the connecting rod 204 to generate pressure inside and suck to the ground. Through such a setting, it enables the user to effectively drive the suction cup 10 to press down and disengage from the ground and effectively drive the suction cup 10 to bulge and suck to the ground by operating the handle assembly 20, and the usage method is efficient and convenient.
[0030] Please refer to Figures 1 to 3 As shown, in some embodiments, a plurality of concave arc grooves 20211 are annularly distributed on the concave and convex top wall 2021, and a plurality of arc protrusions 20311 with the same number as the concave arc grooves 20211 are annularly distributed on the concave and convex bottom wall 2031. Each concave arc groove 20211 on the concave and convex top wall 2021 is respectively engaged with each arc protrusion 20311 on the concave and convex bottom wall 2031.
[0031] During specific implementation: When the lifting shell 202 rotates in one direction, when the concave structure of the concave-convex top wall 2021 is engaged with the convex structure of the concave-convex bottom wall 2031 on the lifting shell 203, each arc protrusion 20311 of the concave-convex bottom wall 2031 and each concave arc groove 20211 of the concave-convex top wall 2021 are respectively transposed and engaged in one direction, so that the state where the concave structure of the concave-convex top wall 2021 on the lifting shell 202 is engaged with the convex structure of the concave-convex bottom wall 2031 on the lifting shell 203 can be limited and fixed. When the lifting shell 202 rotates in another direction, when the convex structure of the concave-convex top wall 2021 contacts the convex structure of the concave-convex bottom wall 2031 on the lifting shell 203 and the lifting shell 202 jacks up the lifting shell 203, each arc protrusion 20311 of the concave-convex bottom wall 2031 on the lifting shell 203 and each concave arc groove 20211 of the concave-convex top wall 2021 on the lifting shell 202 are respectively transposed and engaged in another direction, so that the state where the convex structure of the concave-convex top wall 2021 on the lifting shell 202 contacts the convex structure of the concave-convex bottom wall 2031 on the lifting shell 203 and the lifting shell 202 jacks up the lifting shell 203 can be limited and fixed. Through such a setting, after the lifting shell 202 rotates relative to the lifting shell 203, the position state between the lifting shell 202 and the lifting shell 203 can be limited and fixed by the respective transposed engagement of each arc protrusion 20311 of the concave-convex bottom wall 2031 and each concave arc groove 20211 of the concave-convex top wall 2021.
[0032] Please refer to Figures 1 to 3 As shown, in some embodiments, limiting blocks 2022 are respectively provided on both sides of the inner surface part of the lifting shell 202, limiting grooves 2032 are respectively opened on both sides of the outer surface part of the lifting shell 203, and the limiting blocks 2022 on both sides of the inner surface part of the lifting shell 202 are respectively located in the limiting grooves 2032 on both sides of the outer surface part of the lifting shell 203.
[0033] During specific implementation: When the lifting shell 202 rotates relative to the lifting shell 203, the limiting blocks 2022 on both sides of the inner surface part of the lifting shell 202 respectively move in the limited space in the limiting grooves 2032 on both sides of the outer surface part of the lifting shell 203. Through such a setting, the range of rotation of the lifting shell 202 relative to the lifting shell 203 can be limited, preventing the lifting shell 202 from separating from the lifting shell 203.
[0034] Please refer to Figures 1 to 3As shown, in some embodiments, first retaining walls 20212 are respectively formed on both sides of the concave-convex top wall 2021, and the first retaining walls 20212 on both sides of the concave-convex top wall 2021 are symmetrically arranged; second retaining walls 20312 are respectively formed on both sides of the concave-convex bottom wall 2031, and the second retaining walls 20312 on both sides of the concave-convex bottom wall 2031 are symmetrically arranged; when the concave-convex top wall 2021 is engaged with the concave-convex bottom wall 2031, the first retaining walls 20212 on both sides of the concave-convex top wall 2021 and the second retaining walls 20312 on both sides of the concave-convex bottom wall 2031 are used for corresponding abutment.
[0035] During specific implementation: when the lifting shell 202 rotates in one direction and is engaged with the convex structure of the concave-convex bottom wall 2031 on the lifting shell 203 through the concave structure of the concave-convex top wall 2021, the first retaining walls 20212 on both sides of the concave-convex top wall 2021 respectively abut against the second retaining walls 20312 on both sides of the concave-convex bottom wall 2031. Through such a setting, it is possible to limit the extreme distance of the lifting shell 202 rotating relative to the lifting shell 203 in one direction.
[0036] Please refer to Figure 1 As shown, in some embodiments, a metal disk 102 is fixedly wrapped inside the suction cup 10, and the connecting rod 204 is connected to the suction cup 10 by being fixed to the metal disk 102.
[0037] During specific implementation: the connecting rod 204 is connected to the suction cup 10 by being fixed to the metal disk 102, so that the connecting rod 204 is more firmly connected to the suction cup 10, and when the handle assembly 20 drives the suction cup 10 to bulge and suck to the ground through the connecting rod 204, the connecting rod 204 can evenly give an upward pulling force to the suction cup 10 through the metal disk 102. Through such a setting, the connecting rod 204 can provide a uniform upward pulling force to the suction cup 10 through the metal disk 102 to drive the suction cup 10 to bulge and suck to the ground.
[0038] Please refer to Figure 1 As shown, in some embodiments, the opposite end of the handle rod 201 connected to the lifting shell 202 is set as the hand-held end, and a hand-squeezing block 2011 is provided at the hand-held end of the handle rod 201.
[0039] During specific implementation: when the user rotates the handle assembly 20, the user can rotate by squeezing the hand-squeezing block 2011 at the hand-held end of the handle rod 201. Through such a setting, it is more convenient for the user to exert force when holding the handle rod 201 and rotating.
[0040] Please refer to Figure 1 As shown, in some embodiments, a pull bar 101 is provided on the side of the suction cup 10.
[0041] During specific implementation: The pull bar 101 on the side of the suction cup 10 is used for the user to manually pull it upward, so that the side of the suction cup 10 rises to relieve pressure, and the suction cup 10 can be disengaged from the ground. Through such a setting, the user can also pull the pull bar 101 on the side of the suction cup 10 to relieve the pressure of the suction cup 10 and disengage it from the ground.
[0042] Please refer to Figure 5 As shown, in some embodiments, a first transverse hole 2041 is horizontally penetrated through the top side of the connecting rod 204, and a second transverse hole 2033 is horizontally penetrated through the top side of the lifting shell 203; when the top of the connecting rod 204 is located inside the top of the lifting shell 203, the first transverse hole 2041 on the top side of the connecting rod 204 corresponds to the second transverse hole 2033 on the top side of the lifting shell 203; the first transverse hole 2041 on the top side of the connecting rod 204 and the second transverse hole 2033 on the top side of the lifting shell 203 are jointly inserted by a positioning pin 205, one end of the positioning pin 205 is larger, and the larger end of the positioning pin 205 is in interference fit with one end of the second transverse hole 2033, so that the top of the connecting rod 204 is fixedly connected inside the top of the lifting shell 203.
[0043] During specific implementation: Before the handle assembly 20 is installed on the application device 200, the top of the connecting rod 204 is in a disengaged state from the inner top of the lifting shell 203. The connecting rod 204 is connected to the suction cup 10 through fixation with the metal disc 102 to form a part of the structure, and the lifting shell 202, the handle rod 201, and the lifting shell 203 are another part of the structure. After these two parts of the structure are located at different parts of the application device 200, the top of the connecting rod 204 is located inside the top of the lifting shell 203, and then the positioning pin 205 is manually inserted into the first transverse hole 2041 on the top side of the connecting rod 204 and the second transverse hole 2033 on the top side of the lifting shell 203 together, so that the larger end of the positioning pin 205 is in interference fit with one end of the second transverse hole 2033. Thus, the top of the connecting rod 204 is fixed inside the top of the lifting shell 203, and the disassembly and assembly of the handle assembly 20 on the application device 200 can be completed. Through such a setting, the handle assembly 20 is convenient to be assembled on the application device 200.
[0044] In some specific examples, when the top of the connecting rod 204 is located inside the top of the lifting shell 203, the connecting rod 204 and the lifting shell 203 can also be connected by bolts, so that the connecting rod 204 and the lifting shell 203 are fixed by tightening the bolts and disassembled by loosening the bolts.
[0045] Please refer to Figure 3 and Figure 4 As shown, in some embodiments, a first oil groove 2023 is provided on the concave-convex top wall 2021 at the top end of the lifting shell 202, and a second oil groove 2024 is provided on the bottom end surface of the lifting shell 202.
[0046] During specific implementation: The first oil sump 2023 is used to contain lubricating oil. When the lifting shell 202 rotates relative to the lifting shell 203, the concave-convex top wall 2021 at the top of the lifting shell 202 can be in lubricated contact with the concave-convex bottom wall 2031 of the lifting shell 203 through the lubricating oil in the first oil sump 2023. Through such a setting, the rotation of the lifting shell 202 relative to the lifting shell 203 becomes smoother.
[0047] Please refer to Figure 4 and Figures 6 to 8 As shown, the suction cup locking structure 100 can be used to be installed on the application device 200 that needs to be fixed by means of a suction cup. The application device 200 includes a support plate 2001. An inner groove 20011 is provided on the top surface of the support plate 2001. The support plate 2001 is provided with a through hole 200111 that penetrates up and down corresponding to the inner groove 20011. A flat gasket 200112 is provided in the inner groove 20011. The flat gasket 200112 correspondingly surrounds the through hole 200111. A spring 2002 is provided on the bottom end surface of the support plate 2001. When the suction cup locking structure 100 is installed on the application device 200, the handle assembly 20 is received in the inner groove 20011 on the top surface of the support plate 2001. The spring 2002 abuts between the bottom end surface of the support plate 2001 and the metal disc 102 wrapped inside the suction cup 10, so that the bottom end surface of the support plate 2001 is in elastic contact with the suction cup 10. When the handle assembly 20 is received in the inner groove 20011 on the top surface of the support plate 2001, the bottom end surface of the lifting shell 202 of the handle assembly 20 abuts against the flat gasket 200112 in the inner groove 20011, so that when the handle assembly 20 is rotated, the support plate 2001 rotates against the lifting shell 202 through the flat gasket 200112, thereby preventing wear between the lifting shell 202 and the support plate 2001. And a second oil sump 2024 provided on the bottom end surface of the lifting shell 202 is used to contain lubricating oil, so that the lifting shell 202 can rotate lubricatedly on the flat gasket 200112. And the connecting rod 2004 of the handle assembly 20 passes through the through hole 200111 of the support plate 2001 to be connected to the metal disc 102 wrapped inside the suction cup 10 located at the bottom end of the support plate 2001, so that when the handle assembly 20 is rotated, the suction cup 10 is driven by the connecting rod 204 to bulge to suck the ground or lie flat on the ground to cancel the suction with the ground.
[0048] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For a person skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.
[0049] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. A person skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by a person skilled in the art.
Claims
1. A sucker locking structure, characterized in that, It includes a suction cup and a handle assembly; the handle assembly is in driving connection with the suction cup, and the handle assembly is used to drive the suction cup to lift and lower; the handle assembly includes a handle rod, a jacking shell, a lifting shell and a connecting rod, the handle rod is connected to the jacking shell, the lifting shell is located inside the top of the jacking shell, the lifting shell is connected with the connecting rod, the lifting shell is connected to the suction cup through the connecting rod, a circle of concave-convex top wall is provided at the top end of the jacking shell, and a circle of concave-convex bottom wall is provided on the periphery of the lifting shell, and the concave-convex top wall is fitted with the concave-convex bottom wall.
2. The sucker locking structure according to claim 1, characterized in that, A number of concave arc grooves are annularly distributed on the concave-convex top wall, and a number of arc protrusions equal to the number of the concave arc grooves are annularly distributed on the concave-convex bottom wall, and each concave arc groove on the concave-convex top wall is respectively fitted with each arc protrusion on the concave-convex bottom wall.
3. The suction cup locking structure according to claim 1, wherein Limit blocks are respectively provided on both sides of the inner surface part of the jacking shell, limit grooves are respectively opened on both sides of the outer surface part of the lifting shell, and the limit blocks on both sides of the inner surface part of the jacking shell are respectively located in the limit grooves on both sides of the outer surface part of the lifting shell.
4. The suction cup locking structure according to claim 1, wherein, First stop walls are respectively formed on both sides of the concave-convex top wall, and the first stop walls on both sides of the concave-convex top wall are symmetrically arranged; second stop walls are respectively formed on both sides of the concave-convex bottom wall, and the second stop walls on both sides of the concave-convex bottom wall are symmetrically arranged; when the concave-convex top wall is fitted with the concave-convex bottom wall, the first stop walls on both sides of the concave-convex top wall and the second stop walls on both sides of the concave-convex bottom wall are used for corresponding abutment.
5. The suction cup locking structure according to claim 1, wherein, A metal disc is fixedly wrapped inside the suction cup, and the connecting rod is connected to the suction cup by being fixed to the metal disc.
6. The suction cup locking structure according to claim 1, characterized in that The opposite end of the handle rod connected to the jacking shell is set as a hand-held end, and a hand-squeezing block is provided at the hand-held end of the handle rod.
7. The sucker locking structure according to claim 1, wherein, A pull bar is provided on the side of the suction cup.
8. The suction cup locking structure according to claim 1, wherein, A first horizontal hole is horizontally penetrated through the top side part of the connecting rod, and a second horizontal hole is horizontally penetrated through the top side part of the lifting shell; when the top of the connecting rod is located inside the top of the lifting shell, the first horizontal hole on the top side part of the connecting rod corresponds to the second horizontal hole on the top side part of the lifting shell; the first horizontal hole on the top side part of the connecting rod and the second horizontal hole on the top side part of the lifting shell are jointly inserted by a positioning pin, one end of the positioning pin is larger, and the larger end of the positioning pin is in interference fit with one end of the second horizontal hole, so that the top of the connecting rod is fixedly connected inside the top of the lifting shell.
9. The suction cup locking structure according to claim 1, wherein, A first oil groove is provided on the concave-convex top wall at the top end of the jacking shell, and a second oil groove is provided on the bottom end surface of the lifting shell.