Lifting table board

Abstract

The invention discloses a lifting table board. The lifting table board comprises a fixed seat assembly; a table plate assembly; the lifting mechanism is fixedly connected with the fixing seat assembly and arranged in the fixing seat assembly, the lifting mechanism comprises a fixing support, a coil spring piece and a rope piece, the coil spring piece is wound around the bottom of the fixing support, one end of the rope piece is connected with the coil spring piece so as to bypass the top of the fixing support, and the other end of the rope piece is connected with the table plate assembly; the side part of the table plate assembly is movably connected with the fixed bracket, and the lifting table plate has a retracted state and an unfolded state; when the lifting table plate is in the retracting state, the unfolding length of the coil spring piece is consistent with the moving stroke of the table plate assembly relative to the fixed support, and when the lifting table plate is converted from the retracting state to the unfolding state, the unfolded coil spring piece retracts to drive the rope piece to pull the table plate assembly to complete the moving stroke.

Description

Technical Field

[0001] The present application relates to the technical field of carrier components, and more specifically to a lifting table top. Background Art

[0002] At present, with the increasing abundance of modern transportation and in-vehicle life, functional accessories inside vehicles such as cars are receiving more and more attention. As a key component to improve the convenience of use in the car, the lifting table has a wide range of application prospects in various types of cars, RVs, and even some special-purpose vehicles, providing many conveniences for drivers and passengers.

[0003] However, the existing lifting tables used in vehicles such as cars have significant limitations in design, especially in the lifting function of the table assembly. Traditional lifting tables used in such vehicles mostly use relatively simple and basic mechanical structures to achieve the lifting and lowering of the tray. Common methods include using a direct connecting rod connection, with a simple spring assist, to lift the table assembly through spring thrust. Therefore, due to the structural layout constrained by the limited space in the car, the available power sources and the less than ideal mechanical conduction path, the extension stroke of the table assembly of this type of lifting table is greatly limited. In general, it can only reach a moving stroke of about 150. Due to the insufficient subsequent stroke, it cannot be smoothly lifted to a more ideal height position. The user has to do it himself and manually lift the table assembly to fill the remaining height difference.

[0004] To sum up, how to effectively increase the extension stroke of the table assembly under the limited space conditions of vehicles such as cars, achieve convenient operation without the need for users to manually lift, and make the lifting table more stable and efficient during the lifting process in the vehicle has become a key technical issue that needs to be overcome urgently. Summary of the invention

[0005] The purpose of the present application is to provide a lifting table top to solve the problem of short extension stroke of the lifting table top in the related art.

[0006] To achieve the above objectives, the technical solution adopted in the present application is: to provide a lifting table top, comprising: a fixed seat assembly; a table top assembly; a lifting mechanism, wherein the lifting mechanism is fixedly connected to the fixed seat assembly and is placed in the fixed seat assembly, and the lifting mechanism comprises: a fixed bracket, a coil spring member and a rope member, the coil spring member is wound around the bottom of the fixed bracket, and one end of the rope member is connected to the coil spring member to bypass the top of the fixed bracket, and the other end is connected to the table top assembly, the side of the table top assembly is movably connected to the fixed bracket, and the lifting table top includes a retracted state and an extended state; wherein, when the lifting table top is in the retracted state, the extended length of the coil spring member is consistent with the moving stroke of the table top assembly relative to the fixed bracket, and when the lifting table top is changed from the retracted state to the extended state, the extended coil spring member is retracted to drive the rope member to pull the table top assembly to complete the moving stroke.

[0007] As a preference, when the lifting table top is in a retracted state, the unfolded portion of the coil spring member is disposed on a single side of the fixed bracket.

[0008] As another preferred embodiment, a slot is provided between the bottom and the top of the fixing bracket, the slot extending from the bottom to the top of the fixing bracket, and the unfolded portion of the coil spring is placed in the slot.

[0009] Further preferably, the coil spring member is wound around the bottom of the fixed bracket through a gear assembly, and the gear assembly includes: a coil spring shaft and a damping gear, the coil spring shaft is fixedly connected to the coil spring member, the coil spring shaft is meshed with the damping gear, and the extension and retraction of the coil spring member drives the rotation of the coil spring shaft and the damping gear.

[0010] Preferably, the lifting mechanism also includes a lifting platform, which is rotatably connected to the table top assembly, and the fixed seat assembly is provided with two oppositely arranged slide rails along the moving direction of the table top assembly, so that the lifting platform is slidably connected to the slide rails.

[0011] Preferably, when the lifting table top changes from the retracted state to the extended state, the lifting platform moves along the slide rail from the bottom to the top of the fixed bracket, and when the lifting platform reaches the top of the fixed bracket, the lifting platform self-locks relative to the slide rail.

[0012] Further preferably, the table top assembly includes: a tray body and a table body, the tray body is rotatably connected to the table body, and the lifting platform includes: a locking spindle and a linkage assembly, the locking spindle is arranged through the table body, the linkage assembly is connected to the lifting platform, and a groove is provided on the slide rail near the top position of the fixed bracket; wherein, when the table top assembly moves to the top of the fixed bracket, the locking spindle drives the linkage assembly to engage into the groove to complete the fixation of the lifting platform relative to the slide rail.

[0013] Further preferably, the linkage assembly includes: a first locking side shaft and a second locking side shaft, the first locking side shaft and the second locking side shaft are movably connected to the lifting platform, the first locking side shaft and the second locking side shaft are arranged opposite to each other, and the slide rails on both sides arranged opposite to each other are provided with the grooves corresponding to the first locking side shaft and the second locking side shaft; wherein, the end of the locking main shaft corresponds to the position where the first locking side shaft and the second locking side shaft are close to each other, and the end of the locking main shaft, the first locking side shaft and the second locking side shaft are all arranged with wedge-shaped inclined surfaces, and then the locking main shaft is pressed downward to squeeze and interfere with the first locking side shaft and the second locking side shaft through the wedge-shaped inclined surface, so that the first locking side shaft and the second locking side shaft move away from each other to be embedded in the corresponding grooves for fixation.

[0014] Preferably, a first recess of a first depth and a second recess of a second depth are provided on two adjacent surfaces of the tray body, and the first recess and the second recess have a smooth transition, so that the locking spindle can move between the first recess and the second recess by flipping and rotating the tray body relative to the table body; wherein the first depth is smaller than the second depth, and thus when the locking spindle moves from the second recess into the first recess, one end of the locking spindle close to the linkage assembly extends to drive the linkage assembly to engage into the groove.

[0015] Preferably, the locking main shaft sleeve is provided with an elastic member, and when the locking main shaft enters the second recess from the first recess, the elastic member can drive the locking main shaft to reset and rebound, so that the locking main shaft is separated from the first locking side shaft and the second locking side shaft, and the first locking side shaft and the second locking side shaft move closer to each other to release the self-locking.

[0016] Compared with the prior art, the beneficial effects of this application are:

[0017] The coil spring has excellent elastic energy storage characteristics. When the lifting table is in the retracted state, the coil spring is in the expanded and force-storing state, and the elastic potential energy stored is huge. When the lifting table changes to the expanded state, the coil spring begins to retract. Since one end of the rope member is connected to it, the winding force of the coil spring is transmitted to the table assembly through the rope member. Unlike the traditional method of spring popping out to push the table assembly to move, the rope member in the application document acts as a flexible connector, which can change the direction of the force and efficiently convert the winding force of the coil spring in the vertical direction into the pulling force of the table assembly rising along the fixed bracket, avoiding the dispersion and loss of force. Moreover, the rope member can be flexibly arranged according to the lifting path of the table assembly, without being excessively restricted by the structural shape of the fixed bracket, so that the force generated by the resetting of the coil spring can act on the table assembly along the optimized path, thereby pulling the table assembly smoothly and forcefully, and thus breaking through the original travel limit more easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the lifting table in the retracted state;

[0019] Figure 2 It is a structural schematic diagram of the lifting mechanism and the table board assembly in the retracted state;

[0020] Figure 3 A side view of the lifting mechanism and the table top assembly in the retracted state;

[0021] Figure 4 A schematic diagram of the structure of the top position of the lifting mechanism in the retracted state;

[0022] Figure 5 It is a schematic diagram of the structure of the bottom of the lifting mechanism near the gear assembly in the retracted state;

[0023] Figure 6 is a schematic diagram of the structure of the gear assembly;

[0024] Figure 7 It is a schematic diagram of the partial structure of the lifting table in the unfolded state;

[0025] Figure 8 It is a partial structural schematic diagram of the lifting platform position;

[0026] Fig. 9 It is a partial structural cross-sectional view of the lifting platform;

[0027] Fig.10 It is a schematic diagram of the structure in which the locking spindle abuts against the pallet body;

[0028] Fig.11 It is a structural schematic diagram of the locking structure in the lifting table.

[0029] In the figure: 1. lifting table top; 10. fixed seat assembly; 20. lifting mechanism; 30. fixed bracket; 31. slot; 32. slide rail; 33. groove; 40. table top assembly; 41. tray body; 411. first recess; 412. second recess; 42. lifting platform; 421. platform body; 422. locking main shaft; 423. first locking side shaft; 424. second locking side shaft; 50. coil spring member; 60. rope member; 70. gear assembly; 71. coil spring shaft; 72. damping gear; h1. first depth; h2. second depth; 80. elastic member; 81. table top; 82. table top base; 83. button; 84. button connecting rod; 85. unlocking spring; 86. hanging tooth hook; 87. hook. DETAILED DESCRIPTION

[0030] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0032] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0033] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0034] In a preferred embodiment, see Figures 1 to 11The present application provides a lifting table top 1, comprising: a fixed seat assembly 10; a table top assembly 40; a lifting mechanism 20, wherein the lifting mechanism 20 is fixedly connected to the fixed seat assembly 10 and is placed in the fixed seat assembly 10, and the lifting mechanism 20 comprises: a fixed bracket 30, a coil spring 50 and a rope 60, wherein the coil spring 50 is wound around the bottom of the fixed bracket 30, and one end of the rope 60 is connected to the coil spring 50 to bypass the top of the fixed bracket 30, and the other end is connected to the table top. The lifting table 1 is connected to the assembly 40, the side of the table top assembly 40 is movably connected to the fixed bracket 30, and the lifting table top 1 includes a retracted state and an extended state; wherein, when the lifting table top 1 is in the retracted state, the extended length of the coil spring member 50 is consistent with the moving stroke of the table top assembly 40 relative to the fixed bracket 30, and when the lifting table top 1 is transformed from the retracted state to the extended state, the extended coil spring member 50 is retracted to drive the rope member 60 to pull the table top assembly 40 to complete the moving stroke.

[0035] Among them, in the traditional similar product design, due to the limitation of structure and power mode, the extension stroke of the table board assembly 40 is generally short, with only 150 movement strokes, and when the user is in use, due to the short stroke, the user must manually pull the tray after the table board assembly 40 is extended, which not only consumes physical strength, but also the operation process is extremely inconvenient. However, the present application ingeniously adopts the innovative design of the rope member 60 and the coil spring member 50 to cooperate with each other, making full use of the unique winding characteristics of the coil spring member 50, converting its elastic potential energy into the traction force of the rope member 60, and then pulling the table board assembly 40 steadily and powerfully. In this way, the original stroke limit is easily broken through, and a movement stroke of up to 300 is achieved. There is no need for the user to manually pull, which completely frees both hands, greatly improving the extension convenience and stroke length of the table board assembly 40, fully meeting the needs of a variety of usage scenarios, and realizing the integration of practicality and convenience.

[0036] It should be noted that see Figures 3 to 5The coil spring member 50 has excellent elastic energy storage characteristics. When the lifting table 1 is in the retracted state, the coil spring member 50 is in the expanded and force-storing state, and the elastic potential energy stored is huge. When the lifting table 1 changes to the expanded state, the coil spring member 50 begins to retract. Since one end of the rope member 60 is connected to it, the winding force of the coil spring member 50 is transmitted to the table assembly 40 through the rope member 60. Different from the traditional method of the spring popping out to push the table assembly 40 to move, the rope member 60 in the present application document acts as a flexible connector, which can change the direction of the force and efficiently convert the winding force of the coil spring member 50 in the vertical direction into the pulling force of the table assembly 40 rising along the fixed bracket 30, thereby avoiding the dispersion and loss of force. Moreover, the rope member 60 can be flexibly arranged according to the lifting path of the table top assembly 40, without being excessively restricted by the structural shape of the fixed bracket 30, so that the force generated by the reset of the coil spring member 50 can act on the table top assembly 40 along the optimized path, thereby pulling the table top assembly 40 smoothly and forcefully, and thus breaking through the original travel limitation more easily.

[0037] As a preferred option, see Figure 4 When the lifting table 1 is in the retracted state, the unfolded part of the coil spring member 50 is arranged on a single side of the fixed bracket 30, and there is no need to bypass the fixed pulley arranged on the top of the fixed bracket 30. Therefore, the coil spring member 50 arranged on the single side can reduce the kinetic energy loss of the extended part of the coil spring.

[0038] Specifically, the continuous friction between the extended part of the coil spring 50 and the fixed pulley will consume a large amount of kinetic energy, which greatly reduces the original elastic potential energy of the coil spring 50 during the recovery process and cannot be efficiently converted into effective power to pull the table board assembly 40; on the other hand, frequent friction will also accelerate the wear of components and shorten the overall service life of the device. However, the present application sets the coil spring 50 on one side next to the fixed bracket 30, cleverly avoiding the friction loss between the fixed pulley and the coil spring 50. Not only can the extended part of the coil spring 50 be able to convert the elastic potential energy into the lifting power of the table board assembly 40 with higher efficiency during recovery, ensuring that each lifting action of the tray is strong and powerful, but also greatly reduces the wear between components and extends the durability of the device. From the actual user experience, the lifting process of the table board assembly 40 is smoother and smoother, and there will be no jamming due to insufficient power, which further ensures the stability and reliability of the lifting action of the table board assembly 40.

[0039] As another preferred embodiment, see Figure 2A slot 31 is provided between the bottom and the top of the fixed bracket 30. The slot 31 extends from the bottom to the top of the fixed bracket 30, and the slot 31 is for the unfolded part of the coil spring member 50 to be placed. In the operation process of the lifting mechanism 20 of the lifting table 1, if the unfolded part of the coil spring member 50 lacks a reasonable placement space, it is very easy to cause interference such as entanglement and collision with other surrounding parts. Once this problem occurs, it will not only hinder the normal winding and extension of the coil spring, causing the table assembly 40 to be unable to lift smoothly, but also may damage the coil spring or other related parts due to the hard friction between the parts, causing the failure of the entire lifting mechanism 20, seriously affecting the performance and life of the product. The present application specifically designs a slot 31 between the bottom and the top of the fixed bracket 30. This slot 31 is an exclusive channel set for the unfolded part of the coil spring member 50, which accurately guides the direction of the coil spring member 50 during the extension and retraction process, so that it is always in an orderly and standardized operating state. It effectively avoids the winding contact between the coil spring and the surrounding parts, ensures that the coil spring can be smoothly wound and extended without any hindrance, ensures the smooth operation of the entire lifting mechanism 20 from the source, greatly reduces the probability of failure, provides users with a stable and reliable use experience, and reduces maintenance troubles and use interruptions caused by equipment failure.

[0040] Further preferably, the coil spring member 50 is wound around the bottom of the fixed bracket 30 through a gear assembly 70, and the gear assembly 70 includes: a coil spring shaft 71 and a damping gear 72, the coil spring shaft 71 is fixedly connected to the coil spring member 50, the coil spring shaft 71 is meshed with the damping gear 72, and the extension and contraction of the coil spring member 50 drives the rotation of the coil spring shaft 71 and the damping gear 72. The damping gear 72 provides a certain damping for the rotation of the coil spring shaft 71 to prevent the coil spring member 50 from being retracted too quickly, so that the table assembly 40 rises slowly and evenly.

[0041] Preferably, the lifting mechanism 20 further includes a lifting platform 42, the lifting platform 42 is rotatably connected to the table board assembly 40, and the fixed seat assembly 10 is provided with two oppositely arranged slide rails 32 along the moving direction of the table board assembly 40, and then the lifting platform 42 is slidably connected to the slide rails 32. For the convenience of structural description, Figure 2 The side of the middle lifting mechanism 20 is shown with a slide rail 32 .

[0042] Preferably, see Figures 7 to 9 When the lifting table 1 changes from the retracted state to the extended state, the lifting platform 42 moves along the slide rail 32 from the bottom to the top of the fixed bracket 30, and when the lifting platform 42 reaches the top of the fixed bracket 30, the lifting platform 42 self-locks relative to the slide rail 32.

[0043] Further preferably, the table top assembly 40 includes: a tray body 41 and a table body 421, the tray body 41 is rotatably connected to the table body 421, the lifting platform 42 includes: a locking spindle 422 and a linkage assembly, the locking spindle 422 is set through the table body 421, the linkage assembly is connected to the lifting platform 42, and a groove 33 is set on the slide rail 32 near the top position of the fixed bracket 30; wherein, when the table top assembly 40 moves to the top of the fixed bracket 30, the locking spindle 422 drives the linkage assembly to be engaged in the groove 33 to complete the fixation of the lifting platform 42 relative to the slide rail 32.

[0044] Further preferably, the linkage assembly includes: a first locking side shaft 423 and a second locking side shaft 424, the first locking side shaft 423 and the second locking side shaft 424 are movably connected to the lifting platform 42, the first locking side shaft 423 and the second locking side shaft 424 are arranged opposite to each other, and the two side slide rails 32 arranged opposite to each other are provided with grooves 33 corresponding to the first locking side shaft 423 and the second locking side shaft 424; wherein, the end of the locking main shaft 422 corresponds to the position where the first locking side shaft 423 and the second locking side shaft 424 are close to each other, and the end of the locking main shaft 422, the first locking side shaft 423, and the second locking side shaft 424 are all arranged with wedge-shaped inclined surfaces, and then the locking main shaft 422 is pressed downward to squeeze and interfere with the first locking side shaft 423 and the second locking side shaft 424 through the wedge-shaped inclined surfaces, so that the first locking side shaft 423 and the second locking side shaft 424 move away from each other to be embedded in the corresponding grooves 33 for fixation.

[0045] Among them, when it is necessary to realize the self-locking of the lifting platform 42, the locking spindle 422 only needs to produce a slight displacement change, and the wedge-shaped inclined surface at its end can quickly convert this longitudinal displacement into a strong lateral thrust, and efficiently drive the first locking side shaft 423 and the second locking side shaft 424 to move quickly to both sides. This design using the mechanical principle of the inclined plane greatly simplifies the operation process. It does not require complicated multi-step operations or additional power assistance. Only the natural downward pressure action of the locking spindle 422 can complete the instantaneous self-locking action and achieve fast and accurate locking. At the same time, due to the mechanical advantages of the wedge-shaped inclined plane, the construction accuracy requirements for each component are relatively low. Compared with some high-precision matching locking structures, it can effectively reduce the processing difficulty and cost during the production process and improve production efficiency. It not only ensures the efficient realization of the self-locking function, but also takes into account the production cost and production efficiency.

[0046] Preferably, see Fig.10A first recess 411 of a first depth h1 and a second recess 412 of a second depth h2 are provided on two adjacent surfaces of the tray body 41. The first recess 411 and the second recess 412 have a smooth transition. The tray body 41 is flipped and rotated relative to the table body 421 so that the locking spindle 422 can move between the first recess 411 and the second recess 412. The first depth h1 is smaller than the second depth h2, so that when the locking spindle 422 moves from the second recess 412 to the first recess 411, one end of the locking spindle 422 close to the linkage assembly extends to drive the linkage assembly to engage into the groove 33.

[0047] When the locking spindle 422 transitions from the deeper second recess 412 to the shallower first recess 411, due to the change in the recess depth, the end of the locking spindle 422 close to the linkage assembly naturally extends, thereby accurately triggering the engaging action of the linkage assembly, so that it can be smoothly embedded in the groove 33 on the slide rail 32, and the self-locking of the lifting platform 42 is completed. Therefore, in the specific operation process, the difference between the first depth h1 and the second depth h2 is preferably only 4 mm, and then when the locking spindle 422 enters the first recess 411 from the second recess 412, the locking spindle 422 only drops 4 mm, and the locking spindle 422 can complete the wedge-shaped pushing of the first locking side shaft 423 and the second locking side shaft 424 to move horizontally axially.

[0048] Preferably, the locking main shaft 422 is sleeved with an elastic member 80. When the locking main shaft 422 enters the second recess 412 from the first recess 411, the elastic member 80 can drive the locking main shaft 422 to reset and rebound, so that the locking main shaft 422 is separated from the first locking side shaft 423 and the second locking side shaft 424, and the first locking side shaft 423 moves closer to the second locking side shaft 424 to release the self-locking.

[0049] It should be noted that the elastic member 80 is a spring structure, and through the setting of the elastic member 80, when the lifting table 1 needs to be returned from the expanded state to the retracted state, it is only necessary to rotate the tray body 41, and the elastic member 80 drives the locking spindle 422 to reset into the second recess 412. Due to the upward movement of the locking spindle 422, the first locking side shaft 423 and the second locking side shaft 424 are also approached to each other under the rebound of the elastic member 80, thereby disengaging from the engagement with the groove 33 and completing the unlocking. Therefore, the lifting table 1 in the present application document does not need to lift the table 81 when resetting, which optimizes the product structure and reduces the complexity of operation.

[0050] Among them, in a complete operation process, the lifting table 1 in the present application document is in the initial state, that is, it is presented as Figure 1The middle table top 81 is in the retracted state. When the table top 81 needs to be changed from the retracted state to the extended state, the user only needs to press the button 83 set on the fixed bracket 30. After pressing the button 83, the button connecting rod 84 is driven to move downward, and then the button connecting rod 84 touches the downward pressing hook 87. Since the hook 87 is rotatably connected to the fixed bracket 30, the hook 87 rotates around the connection point at this time, so that the hook 87 is separated from the tooth hook 86. The tooth hook 86 is fixed to the lifting platform 42. When the tooth hook 86 is separated from the hook 87, the lifting platform 42 is not limited by the fixed limit of the hook 87. Therefore, as the coil spring member 50 is recovered and reset, the rope member 60 follows the fixed pulley set at the top of the fixed bracket 30 to stretch the lifting platform 42 to rise, so as to move the retracted length of the coil spring member 50, that is, to complete the moving stroke of the lifting platform 42. Back to the position of hook 87, since hook 87 is pressed down and rotated by button connecting rod 84, hook 87 presses down unlocking spring 85 during the rotation process, and unlocking spring 85 is deformed. After the user releases button 83, unlocking spring 85 is reset, and hook 87 is reset accordingly, thereby completing a shape transformation of lifting table 1.

[0051] Furthermore, after the tray body 41 is unfolded, the table top 81 is still in a folded state. The table top 81 in the present application document is provided with two pieces, which are overlapped by hinges. Therefore, when in use, it is necessary to unfold the two table tops 81 by hinges, and at the same time, rotate the table top 81 relative to the table top base 82 so that the table top 81 extends relative to the table top base 82 to ensure the use range of the table top 81.

[0052] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A lifting table, characterized in that: include: Fixed seat assembly; Table assembly; A lifting mechanism, the lifting mechanism is fixedly connected to the fixing seat assembly and is placed in the fixing seat assembly, and the lifting mechanism includes: A fixed bracket, a coil spring and a rope member, wherein the coil spring member is wound around the bottom of the fixed bracket, one end of the rope member is connected to the coil spring member to bypass the top of the fixed bracket, and the other end is connected to the table plate assembly, the side of the table plate assembly is movably connected to the fixed bracket, and the lifting table plate includes a retracted state and an extended state; Among them, when the lifting table is in a retracted state, the unfolded length of the coil spring member is consistent with the moving stroke of the table assembly relative to the fixed bracket. When the lifting table changes from a retracted state to an unfolded state, the unfolded coil spring member is retracted to drive the rope member to pull the table assembly to complete the moving stroke.

2. The lifting table top according to claim 1, characterized in that: When the lifting table top is in a retracted state, the unfolded portion of the coil spring is disposed on a single side of the fixed bracket.

3. The lifting table top according to claim 1, characterized in that: A slot is provided between the bottom and the top of the fixing bracket. The slot extends from the bottom to the top of the fixing bracket, and the expanded part of the coil spring is placed in the slot.

4. The lifting table top according to claim 1, characterized in that: The coil spring member is wound around the bottom of the fixed bracket through a gear assembly, and the gear assembly includes: a coil spring shaft and a damping gear. The coil spring shaft is fixedly connected to the coil spring member, and the coil spring shaft is meshed with the damping gear. The extension and retraction of the coil spring member drives the rotation of the coil spring shaft and the damping gear.

5. The lifting table as claimed in any one of claims 1 to 4, characterized in that: The lifting mechanism also includes a lifting platform, which is rotatably connected to the table top assembly. The fixed seat assembly is provided with two oppositely arranged slide rails along the moving direction of the table top assembly, and the lifting platform is slidably connected to the slide rails.

6. The lifting table top according to claim 5, characterized in that: When the lifting table plate changes from the retracted state to the extended state, the lifting platform moves along the slide rail from the bottom to the top of the fixed bracket, and when the lifting platform reaches the top of the fixed bracket, the lifting platform self-locks relative to the slide rail.

7. The lifting table top according to claim 6, characterized in that: The table board assembly includes: a tray body and a table body, the tray body is rotatably connected to the table body, and the lifting platform includes: A locking spindle and a linkage assembly, wherein the locking spindle is arranged through the platform body, the linkage assembly is connected to the lifting platform, and a groove is arranged on the slide rail near the top of the fixed bracket; When the table top assembly moves to the top of the fixed bracket, the locking spindle drives the linkage assembly to engage into the groove to complete the fixation of the lifting platform relative to the slide rail.

8. The lifting table top according to claim 7, characterized in that: The linkage components include: A first locking side shaft and a second locking side shaft, the first locking side shaft and the second locking side shaft are movably connected to the lifting platform, the first locking side shaft and the second locking side shaft are arranged opposite to each other, and the slide rails on both sides arranged opposite to each other are provided with the grooves corresponding to the first locking side shaft and the second locking side shaft; Among them, the end of the locking main shaft corresponds to the position where the first locking side shaft and the second locking side shaft are close to each other, and the end of the locking main shaft, the first locking side shaft, and the second locking side shaft are all set with wedge-shaped inclined surfaces, and then the locking main shaft is pressed down to squeeze and interfere with the first locking side shaft and the second locking side shaft through the wedge-shaped inclined surface, so that the first locking side shaft and the second locking side shaft move away from each other to be embedded in the corresponding groove and fixed.

9. The lifting table top according to claim 8, characterized in that: A first depression of a first depth and a second depression of a second depth are formed on two adjacent surfaces of the tray body, and the first depression and the second depression have a smooth transition, and the locking spindle can move between the first depression and the second depression by flipping and rotating the tray body relative to the table body; The first depth is smaller than the second depth, and when the locking spindle moves from the second recess into the first recess, one end of the locking spindle close to the linkage assembly extends to drive the linkage assembly to engage into the groove.

10. The lifting table top according to claim 9, characterized in that: The locking main shaft sleeve is provided with an elastic member. When the locking main shaft enters the second recess from the first recess, the elastic member can drive the locking main shaft to reset and rebound, so that the locking main shaft is separated from the first locking side shaft and the second locking side shaft, and the first locking side shaft and the second locking side shaft move closer to each other to release the self-locking.

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