A desk mount

Abstract

The application claims priority to the prior application with the application number 2025114083510 and the name of a table-mounted rack, the priority date of which is September 29, 2025. The present application provides a table-mounted rack, relating to the technical field of bathroom products, comprising a main body, a moving seat and a moving structure, the main body has a through hole arranged in the axial direction, and a plurality of sliding grooves are arranged on the side wall of the through hole; the moving seat is sleeved in the through hole, and at least two swing parts are arranged on the side wall of the moving seat, each swing part is configured to extend outward along the sliding groove under the action of its own elastic force or gravity; the moving structure comprises an internal thread for screwing with a threaded pipe, during installation, the rack sleeved on the threaded pipe is inserted into the installation hole, and the moving seat is located below the installation table, the threaded pipe is driven to rotate in an operable manner, so that the moving seat moves upward under the action of the internal thread until the swing part abuts against the bottom surface of the installation table. To improve the problem that the existing table-mounted installation structure has a small through hole, which is not conducive to the installation of the pipe fitting.

Description

Technical Field

[0001] This invention relates to the field of bathroom product technology, and more specifically, to a countertop mounting bracket. This application claims priority; the earlier application, application number 2025114083510, entitled "A Countertop Mounting Bracket," was filed on September 29, 2025. Background Technology

[0002] Traditional faucet installation requires threaded mounting tubes to be passed through mounting holes in the countertop, and then a nut compatible with the threaded mounting tubes is screwed in from under the countertop. The nut is then rotated to press against the bottom of the countertop, thus securing the faucet. However, the limited space under the countertop makes it difficult to rotate the nut, and installers need to squat down continuously, which is time-consuming and laborious. Therefore, more and more products are adopting countertop mounting structures. For example, Chinese patent CN206986978U discloses a faucet fixing and mounting device, including a fixing device, a screw connected to the fixing device, and a fixing block mounted on the screw. During installation, the fixing block retracts inward to pass through the mounting hole, placing the fixing base on the top surface of the countertop. Then, rotating the screw drives the fixing block outward, and a limiting structure allows the fixed block to move to the bottom surface of the countertop after unfolding, thus cooperating with the fixing device to clamp the worktable. However, due to the size of the mounting hole, the two screws need to be installed inside the fixing device, resulting in a small through hole in the fixing device. This limits the installation space for the pipe fittings and makes it difficult to install the pipe fittings and faucets, especially for faucets with threaded pipes, which can easily lead to assembly problems. Summary of the Invention

[0003] This invention discloses a platform mounting bracket, which aims to improve the problem that the existing platform mounting structure has small through holes, which is not conducive to the installation of pipe fittings.

[0004] The present invention adopts the following solution: A platform mounting bracket includes a main body, a movable base, and a movable structure. The main body has a through hole extending axially, and multiple sliding grooves are provided on the side wall of the through hole. The movable base is sleeved in the through hole, and at least two swinging parts are installed or formed on its side wall. Each swinging part is configured to extend outward along the sliding groove under its own elastic force or gravity, and can swing inward under the drive of an external force. The movable structure includes an internal thread for screwing into a threaded pipe. During installation, the mounting bracket sleeved on the threaded pipe is inserted into the mounting hole, and the movable base is positioned below the mounting platform. The threaded pipe is driven to rotate in an operable manner, so that the movable base moves upward under the action of the internal thread until the swinging part abuts against the bottom surface of the mounting platform.

[0005] As a further improvement, the movable seat is provided with a mounting part, the swinging part is hinged to the mounting part and can be extended outward under its own gravity, and the mounting part extends at least partially into the slide groove so that the movable seat is limited in the circumferential direction.

[0006] As a further improvement, the movable seat is provided with an outwardly inclined elastic part corresponding to the swinging part, and the swinging part is configured to squeeze the elastic part to swing inward, or to unfold outward under the action of the elastic part.

[0007] As a further improvement, the side wall of the movable seat is formed with swing parts corresponding to each of the slide grooves, and each swing part is configured to tilt upward and outward from the side wall of the movable seat.

[0008] As a further improvement, a guide portion is provided between two adjacent swing portions, the guide portion being used to cooperate with the side wall of the slide groove so that the moving seat is limited in the circumferential direction.

[0009] As a further improvement, the top of the main body is fitted with a fixed cover for abutting against the top surface of the mounting platform. Multiple rotating teeth are provided along the inner wall of the fixed cover. The top of the main body is provided with a drive tooth that meshes with the rotating teeth. When the swinging part is pressed against the bottom surface of the mounting platform, the drive tooth can slide relative to the rotating teeth by continuing to rotate the threaded tube, so as to emit a prompt sound.

[0010] As a further improvement, the rotating tooth has a guide surface and a stop surface. The guide surface is arranged obliquely along the locking direction, and the stop surface is arranged along the unlocking direction. The driving tooth is pawl-shaped and is configured to slide only along the direction of the guide surface.

[0011] As a further improvement, at least one guide surface is provided with a protrusion for limiting the sliding of the drive tooth, so that the drive tooth is restricted between the protrusion and the stop surface.

[0012] As a further improvement, the fixed cover is provided with a channel for the drive tooth to be inserted. When the drive tooth is aligned with the channel, the drive tooth can enter and exit the channel. When the drive tooth is misaligned with the channel, the drive tooth is limited along the axial direction.

[0013] As a further improvement, the internal thread is formed on a nut located below the movable seat, or formed on the movable seat.

[0014] By adopting the above technical solution, the present invention can achieve the following technical effects: 1. This application simplifies the structure for driving the swinging part by providing a swinging component on the movable base. When entering the mounting hole, the swinging part swings inward, and after exiting the mounting hole, it unfolds outward under its own elasticity or gravity. This reduces the space occupied by components in the through hole. Compared with existing technologies, the unfolding of the swinging part does not require a screw, saving space within the through hole and ensuring sufficient space for pipe installation. Furthermore, the simple structure and fewer parts reduce costs and enhance market competitiveness.

[0015] 2. The top of the main body is equipped with a fixed cover, which has multiple rotating teeth. The main body is equipped with drive teeth for engaging with the rotating teeth. When the swinging part is pressed against the bottom surface of the mounting platform, the threaded tube continues to rotate, and the drive teeth can slide relative to the rotating teeth to make a "click-click-click" sound, indicating that it has been installed in place. This allows the installer to understand the installation status without having to go under the platform to observe, thus further facilitating the installation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention; Figure 2 This is a cross-sectional view of one embodiment of the present invention; Figure 3 This is a schematic diagram of the structure after concealing the decorative cover in one embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the fixing cover according to one embodiment of the present invention; Figure 5 This is a schematic diagram of the structure after concealing the decorative cover according to another embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the fixing cover according to another embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of a decorative cover according to one embodiment of the present invention; Figure 8 This is a schematic diagram of the main body of one embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the movable seat in one embodiment of the present invention when the swinging part is unfolded; Figure 10 This is a schematic diagram of the structure of the movable seat in one embodiment of the present invention when the swinging part swings inward; Figure 11 This is a schematic diagram of the structure of the movable seat in another embodiment of the present invention when the swinging part is deployed; Figure 12 This is a cross-sectional view of the movable seat according to another embodiment of the present invention when the swinging part swings inward; Figure 13 This is a schematic diagram of the structure of a nut according to one embodiment of the present invention; Figure 14 This is a schematic diagram of the structure of one embodiment of the present invention when assembled with the main body; Figure 15 yes Figure 14 A cross-sectional view along one of its sections; Figure 16 This is a schematic diagram of the structure of another embodiment of the present invention; Figure 17 yes Figure 6 Schematic diagram of the moving base; Figure 18 This is a schematic diagram of another embodiment of the present invention; Figure 19 yes Figure 18 Schematic diagram of the moving base; Figure 20 This is a cross-sectional view of one embodiment of the present invention when the swing part is not inserted into the mounting hole; Figure 21 This is a cross-sectional view of one embodiment of the present invention when the swinging part abuts against the mounting platform; Figure 22 This is a cross-sectional view of another embodiment of the present invention; Figure 23 This is a schematic diagram of the structure of the decorative cover according to another embodiment of the present invention; Figure 24 This is a schematic diagram of the main body of another embodiment of the present invention; Figure 25 and Figure 26 This is a structural schematic diagram of the fixed cover of another embodiment of the present invention from different perspectives.

[0018] Icons: 1-Main body; 11-Through hole; 12-Slide groove; 13-Drive tooth; 2-Moving seat; 21-Swing part; 22-Mounting part; 23-Rotating shaft; 24-Elastic part; 25-Through hole; 251-Limiting rib; 26-Guide part; 27-Internal thread; 3-Nut; 31-Internal thread; 32-Limiting part; 4-Fixing cover; 41-Rotating tooth; 411-Guide surface; 412-Stop surface; 413-Protrusion; 42-First locking part; 43-First insert tooth; 44-Channel; 5-Decorative cover; 51-Second locking part; 52-Assembly hole; 53-Second insert tooth; 6-Threaded tube; 7-Main body; 8-Mounting platform. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The terms “top,” “bottom,” “upper,” “lower,” “left,” “right,” “front,” “back,” and similar expressions used in this document are for illustrative purposes only. The terms “first,” “second,” etc., are only used to distinguish different objects and should not be construed as indicating or implying relative importance or the quantity, specific order, or primary or secondary relationship of the indicated technical features. The term “several” means one or more, and “multiple” means two or more, unless otherwise explicitly specified. Example

[0021] Combination Figures 1 to 26 This embodiment provides a platform mounting bracket, including a main body 1, a movable seat 2, and a moving structure. The main body 1 has a through hole 11 that extends axially, and a plurality of sliding grooves 12 are provided on the side wall of the through hole 11. The movable seat 2 is sleeved in the through hole 11, and at least two swinging parts 21 are installed or formed on its side wall. Each swinging part 21 is configured to extend outward along the sliding groove 12 under its own elastic force or gravity, and can swing inward under the drive of external force. The moving structure includes an internal thread for screwing into a threaded tube 6. During installation, the mounting bracket sleeved on the threaded tube 6 is inserted into the mounting hole, and the movable seat 2 is positioned below the mounting platform 8. The threaded tube 6 is driven to rotate in an operable manner, so that the movable seat 2 moves upward under the action of the internal thread until the swinging part 21 abuts against the bottom surface of the mounting platform 8.

[0022] It should be noted that, in this embodiment, by providing a swinging part 21 on the movable seat 2, the swinging part 21 can swing inward when entering the mounting hole, and unfold outward under its own elastic force or gravity after passing through the mounting hole. This simplifies the structure used to drive the swinging part 21 to unfold, thereby reducing the space occupied by components in the through hole 11. Compared with the prior art, the unfolding of the swinging part 21 does not require a screw drive, which can save space in the through hole 11, so that the space in the through hole 11 can meet the installation of the pipe fitting. In addition, the structure is simple and has fewer parts, which can save costs and help improve market competitiveness.

[0023] In one embodiment, an internal thread 31 is formed on a nut 3 located below the movable seat 2. The outer wall of the nut 3 is provided with limiting portions 32 corresponding to each sliding groove 12. Each limiting portion 32 extends into the sliding groove 12 to limit the nut 3 circumferentially. The movable seat 2 is provided with a mounting portion 22, and a swing portion 21 is hinged to the mounting portion 22 and can unfold outwards under its own weight. The mounting portion 22 extends at least partially into the sliding groove 12 to limit the movable seat 2 circumferentially. The nut 3 and the movable seat 2 can be inserted obliquely along the through hole 11 so that the limiting portion 32 and the mounting portion 22 extend into the sliding groove 12. This reduces the deformation of the through hole 11 during assembly and ensures the insertion force of the nut 3 and the movable seat 2. For example, the mounting portion 22 is provided with a first mounting hole, and the swing portion 21 is provided with a second mounting hole. The first mounting hole and the second mounting hole are connected via a rotating shaft 23 so that the swing portion 21 can swing relative to the movable seat 2. When the swing part 21 unfolds outward, its bottom abuts against the mounting part 22 to control the angle at which the swing part 21 unfolds outward, ensuring that the top of the swing part 21 is higher than the top of the movable seat 2, and can withstand the clamping force when it abuts against the mounting platform 8, so as to ensure the stability during locking and avoid the problem of the mounting bracket loosening.

[0024] During installation, first screw the nut 3 into the threaded tube 6, then insert the threaded tube 6 with the mounting bracket into the mounting hole. Due to the size of the mounting hole, the swing part 21 will swing inward. Once it passes under the mounting platform 8, the swing part 21 can unfold outward under its own elasticity or gravity. Then, press down on the main body 1 with one hand and rotate the threaded tube 6 with the other hand, so that the nut 3 moves upward along the slide groove 12 to abut against the moving seat 2 until the swing part 21 abuts against the bottom surface of the mounting platform 8, so that the main body 1 is fixed, thereby fixing the threaded tube 6, that is, fixing the faucet that is configured on or connected to the threaded tube 6.

[0025] Furthermore, the movable base 2 is provided with an outwardly inclined elastic portion 24 corresponding to the swing portion 21. The swing portion 21 is configured to be able to squeeze the elastic portion 24 to swing inward, or to unfold outward under the action of the elastic portion 24. The provision of the elastic portion 24 further ensures that the swing portion 21 can unfold outward. The swing portion 21 unfolds automatically under the dual protection of the elastic force of the elastic portion 24 and the gravity of the swing portion 21, to prevent the swing portion 21 from failing to unfold outward. For example, the movable base 2 is a plastic part, and the elastic portion 24 is integrally formed with the movable base 2, so that the elastic portion 24 has a certain elasticity and can be fixedly connected to the movable base 2, reducing the number of parts.

[0026] In another embodiment, the internal thread 27 is formed on the movable seat 2, which reduces the number of parts required, thereby reducing the assembly and cost of the mounting bracket. The slide 12 can be connected to the bottom surface of the main body 1. During disassembly, the movable seat 2 can be directly dropped by rotating the threaded tube 6 in the opposite direction. Both disassembly and assembly can be performed on a table. In other embodiments, to avoid losing parts, after the movable seat 2 detaches from the threaded tube 6, it is constrained by the slide 12 and falls to the bottom of the slide 12. During disassembly, the swing part 21 needs to be manually pressed inward into the mounting hole and then pushed upward out of the mounting hole. This is not limited to these embodiments and no specific limitation is made.

[0027] In a preferred embodiment, refer to Figure 18 and Figure 21 The sidewall of the movable seat 2 is formed with swing portions 21 corresponding to each of the slide grooves 12. Each swing portion 21 is arranged to tilt upward and outward from the sidewall of the movable seat 2. The swing portion 21 is integrally injection molded with the movable seat 2, giving the swing portion 21 a certain degree of elasticity. Under the action of the mounting hole and downward pressure, the swing portion 21 swings inward to pass through the mounting hole, and after passing through the mounting hole, it unfolds outward under its own elastic force. The integral molding of the swing portion 21, the internal thread 27 and the movable seat 2 can reduce the number of parts and assembly, further reducing costs. It should be noted that the movable seat 2 will rotate relative to the main body 1 in the initial stage of movement. When the swing portion 21 abuts against the sidewall of the slide groove 12, the movable seat 2 can move upward.

[0028] Better, refer to Figure 16 and Figure 17 A guide portion 26 is provided between two adjacent swing portions 21. The guide portion 26 is used to cooperate with the side wall of the slide groove 12 to limit the movement seat 2 in the circumferential direction. The guide portion 26 can prevent the movement seat 2 from rotating relative to the main body 1, so that the movement seat 2 can maintain movement in a straight line.

[0029] It should be mentioned that the integral structure of the swing part 21 and the movable seat 2 is particularly suitable for cases where the mounting platform 8 is relatively thin, such as when it is assembled with a sink, and can be inserted quickly and effortlessly.

[0030] Based on the above embodiments, in an optional embodiment of the present invention, referring to Figures 1 to 8 The top of the main body 1 is fitted with a fixed cover 4 for abutting against the top surface of the mounting platform 8. Multiple rotating teeth 41 are provided along the inner wall of the fixed cover 4. The top of the main body 1 is provided with a drive tooth 13 that meshes with the rotating teeth 41. When the swing part 21 abuts against the bottom surface of the mounting platform 8, the threaded tube 6 continues to rotate, and the drive tooth 13 can slide relative to the rotating teeth 41 to emit a prompt sound.

[0031] Specifically, when the swinging part 21 has not yet come into contact with the mounting platform 8, the moving seat 2 exerts a relatively small abutting force on the side wall of the slide groove 12 during its upward movement, and will not cause the drive teeth 13 on the main body 1 to slide relative to the rotating teeth 41. After the swinging part 21 comes into contact with the mounting platform 8, the fixed cover 4 also comes into contact with the top surface of the mounting platform 8, that is, the swinging part 21 and the fixed cover 4 together clamp the mounting platform 8. Continuing to rotate the threaded tube 6, the moving seat 2 can no longer move upward. At this time, the abutting force on the side wall of the slide groove 12 is large, driving the drive teeth 13 on the main body 1 to slide relative to the rotating teeth 41, thus emitting a "click-click-click" sound to indicate that it has been installed in place, so that the installer can understand the installation status without having to go to the bottom of the platform to observe, thereby further facilitating the installation.

[0032] Furthermore, the rotating tooth 41 has a guide surface 411 and a stop surface 412. The guide surface 411 is arranged at an angle along the locking direction, and the stop surface 412 is arranged along the unlocking direction. The driving tooth 13 is pawl-shaped and is configured to slide only along the direction of the guide surface 411. The guide surface 411 has a small slope, while the stop surface 412 has a large slope. The driving tooth 13 can only slide relative to the rotating tooth 41 in the locking direction and cannot slide relative to the rotating tooth 41 in the unlocking direction. This ensures that the main body 1 will not rotate relative to the fixed cover 4 in any state during unlocking, thus guaranteeing a smooth unlocking process.

[0033] In one embodiment, at least one guide surface 411 is provided with a protrusion 413 for limiting the sliding of the drive tooth 13, so that the drive tooth 13 is restricted between the protrusion 413 and the stop surface 412. During installation, the drive tooth 13 is engaged on several rotating teeth 41 in front of the protrusion 413, so that the drive tooth 13 continues to rotate when locked, and there is no slippage state that continuously emits a beeping sound. After the drive tooth 13 slides past several rotating teeth 41, it is restricted by the protrusion 413 and stops, so as to remain in the locked state.

[0034] Preferably, a decorative cover 5 is fitted around the outer periphery of the fixed cover 4. The fixed cover 4 has a first locking portion 42 on its outer periphery, and the decorative cover 5 has a second locking portion 51 on its inner wall. The first locking portion 42 and the second locking portion 51 engage with each other to limit the axial movement of the decorative cover 5. The decorative cover 5 conceals the structure on the fixed cover 4, making the faucet's appearance more aesthetically pleasing and simple. For example, see... Figure 6 and Figure 7 The first locking part 42 protrudes along the outer periphery of the fixing cover 4, and its cross-sectional shape is arc-shaped. The second locking part 51 is a groove provided along the inner wall of the decorative cover 5. (Refer to...) Figure 22 and Figure 23 Alternatively, a first insert 43 can be provided on the outer periphery of the fixed cover 4, and a second insert 53 can be provided on the inner periphery of the decorative cover 5. The first insert 43 and the second insert 53 are inserted into each other so that the decorative cover 5 and the fixed cover 4 are limited in the circumferential direction. However, this is not the only option and no specific limitation is made.

[0035] Preferably, the decorative cover 5 is provided with a mounting hole 52 for fitting the outer wall of the body 7 to be installed, so that the body 7 to be installed can be inserted into the mounting hole 52 without the need for other fixing structures.

[0036] According to Figure 25 and Figure 26 In another embodiment, the fixed cover 4 is provided with a channel 44 for inserting the driving tooth 13. When the driving tooth 13 is aligned with the channel 44, the driving tooth 13 can enter and exit the channel 44. When the driving tooth 13 is misaligned with the channel 44, the driving tooth 13 is axially limited. The channel 44 can be configured to communicate with the rotating tooth 41, so that the driving tooth 13 can be directly inserted along the channel 44 to mesh with the rotating tooth 41. Then, the fixed cover 4 is rotated so that the channel 44 is misaligned with the driving tooth 13, thereby preventing the fixed cover 4 from detaching from the main body 1. During disassembly, the channel 44 of the fixed cover 4 is rotated until it is aligned with the driving tooth 13, and then it can be pulled out, which is convenient and quick.

[0037] In other embodiments, the movable seat 2 has a through hole 25 through which the threaded tube 6 passes, and multiple limiting ribs 251 extend vertically along the wall of the through hole 25 to reduce the gap between the inner wall of the through hole 25 and the outer wall of the threaded tube 6. This prevents the center of the movable seat 2 from shifting, which could cause the position of the swing part 21 to deviate too much and result in an uneven clamping force between the swing part 21 and the fixed cover 4.

[0038] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A tabletop mounting bracket, characterized in that, The device includes a main body, a movable seat, and a movable structure. The main body has a through hole extending axially and multiple grooves on the side wall of the through hole. The movable seat is fitted inside the through hole, and at least two swinging parts are installed or formed on its side wall. Each swinging part is configured to extend outward along the groove under its own elastic force or gravity and can swing inward under external force. The movable structure includes an internal thread for screwing into a threaded pipe. During installation, a mounting bracket fitted on the threaded pipe is inserted into the mounting hole, and the movable seat is positioned below the mounting platform. The threaded pipe is rotated in an operable manner, causing the movable seat to move upward under the action of the internal thread until the swinging part abuts against the bottom surface of the mounting platform.

2. The platform mounting bracket according to claim 1, characterized in that, The movable seat is provided with a mounting part, the swinging part is hinged to the mounting part and can be extended outward under its own gravity. The mounting part extends at least partially into the sliding groove so that the movable seat is limited in the circumferential direction.

3. The platform mounting bracket according to claim 2, characterized in that, The movable seat is provided with an outwardly inclined elastic part corresponding to the swinging part. The swinging part is configured to squeeze the elastic part to swing inward, or to unfold outward under the action of the elastic part.

4. The platform mounting bracket according to claim 1, characterized in that, The side wall of the movable seat is formed with swing parts corresponding to each of the slide grooves, and each swing part is configured to tilt upward and outward from the side wall of the movable seat.

5. The platform mounting bracket according to claim 4, characterized in that, A guide portion is provided between two adjacent swing portions, which is used to cooperate with the side wall of the slide groove so that the moving seat is limited in the circumferential direction.

6. The platform mounting bracket according to claim 1, characterized in that, The top of the main body is fitted with a fixed cover for abutting against the top surface of the mounting platform. Multiple rotating teeth are provided along the inner wall of the fixed cover. The top of the main body is provided with a drive tooth that meshes with the rotating teeth. When the swinging part is pressed against the bottom surface of the mounting platform, the drive tooth can slide relative to the rotating teeth by continuing to rotate the threaded tube, so as to emit a prompt sound.

7. The platform mounting bracket according to claim 6, characterized in that, The rotating tooth has a guide surface and a stop surface. The guide surface is arranged obliquely along the locking direction, and the stop surface is arranged along the unlocking direction. The driving tooth is pawl-shaped and is configured to slide only along the direction of the guide surface.

8. The tabletop mounting bracket according to claim 7, characterized in that, At least one guide surface is provided with a protrusion for restricting the sliding of the drive tooth, so that the drive tooth is restricted between the protrusion and the stop surface.

9. The platform mounting bracket according to claim 6, characterized in that, The fixed cover is provided with a channel for the drive tooth to be inserted. When the drive tooth is aligned with the channel, the drive tooth can enter and exit the channel. When the drive tooth is misaligned with the channel, the drive tooth is limited along the axial direction.

10. The tabletop mounting bracket according to any one of claims 1-9, characterized in that, The internal thread is formed on a nut located below the movable seat, or formed on the movable seat.

Images