Up-down linkage mechanism

Abstract

The invention belongs to the technical field of folding structures, and particularly relates to an up-down linkage mechanism. Comprising a fixed bracket, a driving mechanism and a swinging mechanism, the driving mechanism comprises a driving mechanism body and a driving mechanism moving end; the fixing support is movably connected with the driving mechanism body, and the swing mechanism is movably connected with the moving end of the driving mechanism. The swinging mechanism occupies a smaller space during swinging and can be applied to linkage rotation of upper and lower mechanisms in a smaller and narrow space, so that the whole set of upper and lower linkage mechanism can be applied to more slender and narrow spaces, and more possibilities are provided.

Description

Technical Field

[0001] The present application belongs to the technical field of folding structures, and in particular relates to an upper and lower linkage mechanism. Background Art

[0002] In order to facilitate transportation and save storage space when not in use, the existing tables, especially mahjong tables, usually have the table top hinged to the top of the column. When transporting or storing, the table top is folded along the hinge so that the bottom of the table top fits against one side of the column, thereby achieving the purpose of convenience and space saving during transportation and storage. However, in the prior art, the support base of the table, especially the mahjong table, is usually a non-foldable structure. Although the area of ​​the base is smaller than the area of ​​the table top, after the table top is folded, it is located on the side opposite to the column and the table top, and the protruding base still occupies a certain space. From the perspective of saving storage space, at least the current folding tables, especially the folding mahjong tables, need to be improved.

[0003] Taking a mahjong table as an example, in a normal state, the base can stably support the mahjong table. In a folded state, due to the flipping of the table top, the center of gravity of the entire mahjong table is deflected to the folding side, but the support center of the base is not adjusted accordingly. Therefore, after being folded, the existing foldable mahjong table is only supported by the base, and has poor stability. It is very easy to tip over to the folding side of the table top, and is usually placed against a wall.

[0004] Many folding devices for tables on the market often have the folding structure of the table top and the column exposed to the outside, which is not only unsightly, but also easily damaged by touch, and easily injured by people, with poor safety. In addition, the columns of existing folding devices are thick and unsightly, and the thickness of the base is also relatively high, which affects the user experience and feelings and takes up space.

[0005] All of the above-mentioned issues are hot and painful issues that need to be resolved in this field. Summary of the invention

[0006] The purpose of this application is to provide an up and down linkage mechanism.

[0007] An up-and-down linkage mechanism, comprising: a fixed bracket, a driving mechanism, and a swinging mechanism;

[0008] The driving mechanism comprises a driving mechanism body and a driving mechanism moving end;

[0009] The fixed bracket is movably connected to the driving mechanism body, and the swing mechanism is movably connected to the moving end of the driving mechanism.

[0010] Preferably, the driving mechanism includes any one of an electric driving mechanism, a hydraulic driving mechanism or a pneumatic driving mechanism.

[0011] Preferably, the driving mechanism is an electric driving mechanism;

[0012] The driving mechanism body includes a permanent magnet synchronous motor and a lead screw assembly driven by the permanent magnet synchronous motor;

[0013] The moving end of the driving mechanism is a lead screw nut adapted to the lead screw assembly.

[0014] Preferably, the lead screw assembly includes: a lead screw fixed sleeve and a lead screw. The lead screw fixed sleeve is movably connected to the fixed bracket, and the permanent magnet synchronous motor drives the lead screw to rotate by means of gear meshing transmission.

[0015] Preferably, the up-and-down linkage mechanism includes a rotating mechanism. The rotating mechanism is movably connected to the fixed bracket. The rotating mechanism includes a first rotating arm and a second rotating arm. The end point of the first rotating arm is movably connected to the lower end point of the swinging mechanism.

[0016] Preferably, the rotation range of the first rotating arm is from the position of 45 degrees downward horizontally to the position of 45 degrees upward horizontally.

[0017] Preferably, the rotation range of the second rotating arm is from the position of 45 degrees to the left vertically to the position of 45 degrees to the right vertically.

[0018] Preferably, the driving mechanism body is arranged inside the fixed bracket.

[0019] Preferably, the up-and-down linkage mechanism includes a microswitch. The microswitch is electrically connected to the driving mechanism.

[0020] Preferably, the microswitch is fixed beside the swinging mechanism, and the swinging mechanism is provided with a microswitch contact adapted to the microswitch.

[0021] Preferably, the microswitch is fixed beside the position where the swinging mechanism extends out of the column.

[0022] Preferably, the up-and-down linkage mechanism includes: an upper rotating component. The upper end point of the swinging mechanism is movably connected to the upper rotating component. The rotation range of the connecting line formed by the rotation axis point of the upper rotating component and the upper end point of the swinging mechanism is from the position of 45 degrees downward horizontally to the position of 45 degrees upward horizontally.

[0023] Compared with the prior art, the present application has the following technical effects:

[0024] ①. The base is divided into a mobile base and a fixed base. The column is arranged on the fixed base. When the mobile base is fully extended, the machine cover is horizontal, and the overall base is symmetrical left and right. The rotation of the machine cover and the extension of the mobile base are synchronized. Moreover, the movement of the center of gravity of the desktop on the machine cover is basically consistent with the real-time center of the overall base, overcoming the defects of unstable center of gravity and large space occupation after folding. At the same time, the extension of the base and the rotation of the machine cover are carried out synchronously, improving the user experience.

[0025] ②. When the machine cover is horizontal, the height of the fork arm is flush with the surface of the machine cover, and the machine cover is just centered. When the machine cover is vertical, the thickness of the fork arm is the same as that of the machine cover, which can be about the thickness of a desktop. When the mobile base is fully extended, the overall base composed of the fixed base and the mobile base is exactly symmetrically arranged, thus making full use of and saving space. The machine cover is convenient for installing and replacing the desktop, and the space inside the machine cover can also be used for installing the necessary accessory structures for the desktop, improving the compatibility of the folding device and facilitating the installation of various desktop devices, such as installing the main desktop of an electric mahjong machine or an electric poker machine on the machine cover.

[0026] In this application, the thickness of the fork arm is the same as that of the column, and the thickness of the fork arm is also the same as that of the machine cover. When the machine cover is vertical, the swing mechanism is embedded in the machine cover, thus ensuring that after folding, the desktop on the side of the machine cover where the desktop is installed is closely attached to the machine cover and the column, saving space and protecting the swing mechanism at the same time.

[0027] ③. The upper and lower linkage mechanism inside the whole column swings synchronously when the swing mechanism moves up and down. Moreover, when the swing amplitude is very small, the space occupied by the upper and lower linkage mechanism is saved. By designing a specific positional relationship between the point connected to the swing mechanism (composed of an upper swing arm and a connecting rod in the specific implementation) up and down and the rotation point of the machine cover or the rotation point of the rotation mechanism (specifically the lower swing arm in the specific implementation), the stroke of the up and down movement of the swing mechanism can be converted into the rotation stroke actually required by the machine cover or the rotation mechanism. The rotation mechanism then sets the first rotation arm and the second rotation arm to convert the up and down stroke into a left and right stroke, so as to realize the synchronous drive of the 90-degree flip of the machine cover and the left and right movement of the mobile base.

[0028] ④. Through the above design, the structural components are greatly reduced, the space of the equipment is fully utilized, the production cost is reduced, the installation and maintenance are convenient, and the user experience is improved, achieving unexpected technical effects. Description of the Drawings

[0029] The drawings are used to provide a further understanding of the present application and constitute a part of the specification. They are used together with the embodiments of the present application to explain the present application and do not constitute a limitation to the present application. In the drawings:

[0030] Figure 1 Stereogram of the vertical state of the machine cover while the mobile base is retracted;

[0031] Figure 2 Left view and front view of the vertical state of the machine cover while the mobile base is retracted;

[0032] Figure 3 Stereogram of the horizontal state of the machine cover while the end base with a tabletop is extended;

[0033] Figure 4 Folding state with the tabletop rotated halfway;

[0034] Figure 5 Right, rear, left, and front views when the tabletop is rotated to the vertical;

[0035] Figure 6 Stereogram when the tabletop is rotated to the vertical;

[0036] Figure 7 Stereo structure without the column housing and the base housing Figure 1 ;

[0037] Figure 8 Stereo structure without the column housing and the base housing Figure 2 ;

[0038] Figure 9 Stereo structure diagram without the column housing, the base housing, and the machine cover;

[0039] Figure 10 Schematic diagram of the internal structure of the column and the base in the vertical state of the machine cover;

[0040] Figure 11 Schematic diagram of the machine cover structure;

[0041] Figure 12 Partial structure schematic diagram of the permanent magnet synchronous motor driving the lead screw;

[0042] Figure 13 Schematic diagram of the internal structure of the column and the base in the horizontal state of the machine cover;

[0043] In the figure: tabletop 1; machine cover 2, machine cover support plate 21, locking shaft 22, micro switch 23; column 3, fork arm 31, connecting rod 321, upper swing arm 322, lower swing arm 323, swing arm bracket 33, lead screw nut 34, lead screw 35, lead screw fixing sleeve 36, lead screw component support frame 37, push rod support plate 38, permanent magnet synchronous motor 39; base 4, fixed end base 41, fixed end guide rail 411, mobile base 42, mobile guide rail 421, mobile base connecting rod 422. Detailed implementation method

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0045] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0046] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0047] This embodiment consists of several parts, as Figures 1 to 13 shown, specifically including: a machine cover rotatably connected to the upper end of the column and a fixed-end base at the bottom of the column. A mobile base is embedded in the fixed-end base.

[0048] The machine cover part installed between the fork arms at the upper end of the column. The fork arms are U-shaped. When the machine cover is horizontal, it is exactly in the middle of the fork arms. In this way, when installing, for example, the main body of a mahjong machine on the machine cover, the center of gravity is exactly in the middle. When the machine cover is perpendicular to the fork arms, the machine cover is exactly inside the fork arms, that is, the top surface and the ground of the machine cover are exactly flush with the two sides of the fork arms at this time, ensuring the beautiful and simple style of the equipment and improving the user experience.

[0049] In this embodiment, a machine cover support plate is provided between the machine cover and the fork arms. The machine cover support plate is fixed to the machine cover. By setting a rotating shaft (abbreviated as point A) in the upper left corner of the fork arms, when the machine cover is horizontal, it is exactly in the middle of the fork arms. When the machine cover is perpendicular to the fork arms, the lower half of the machine cover is exactly inside the fork arms.

[0050] A compression spring is provided inside the rotating shaft at the upper left corner of the fork arm. This spring is in its natural state when the machine cover is horizontal and in a compressed state when the machine cover is vertical. In this way, when the machine cover changes from vertical to horizontal, the motor requires more power and outputs more power when changing from vertical to horizontal. The compression spring can just provide a certain rotational power, thus reducing the power output by the motor and saving power consumption. When the machine cover rotates from vertical to horizontal, the spring can also play a good buffering role.

[0051] In order to make the machine cover and the fork arm more stable and not shake whether they are relative to horizontal or relative to vertical, a locking seat is provided at the lower right corner of the fork arm, and locking holes corresponding to the locking seat are provided at the corresponding positions of the machine cover support plate. A locking shaft is provided inside the locking seat, and a locking turntable is provided outside the locking shaft. This mechanism can be set, for example, to lock by rotating 90 degrees clockwise and unlock in the opposite direction. There are two locking holes on the machine cover support plate, namely: one hole corresponds to the machine cover being horizontal, and one hole corresponds to the machine cover being vertical.

[0052] An insertion groove for the connecting rod is provided at the bottom of the machine cover. When the machine cover is vertical, the connecting rod just fits into the groove, preventing the connection part between the connecting rod and the machine cover from being exposed at the bottom of the machine cover, which is likely to bump and damage the connecting rod and the connection part where the connecting rod and the machine cover are movably connected. At the same time, it can keep the appearance style of the equipment simple and beautiful, improving the user's comfort in use.

[0053] The upper end of the connecting rod is movably connected to the bottom of the machine cover (abbreviated as point B), the lower end of the connecting rod is fixed to the right side of the upper end of the upper swing arm, and the left side of the upper end of the upper swing arm is movably connected to the screw nut (abbreviated as point C), further as a horizontal rotational connection, as Figure 10 shown. At this time, when the machine cover is in the vertical state, the bottom of the upper swing arm is movably connected to the upper left end of the lower swing arm (abbreviated as point D), further as a horizontal rotational connection. The lower left end of the lower swing arm can be directly movably connected to the mobile base (abbreviated as point E), or the lower left end of the lower swing arm can be movably connected to the mobile base connecting rod, further as a horizontal rotational connection. Through the mobile base connecting rod, it is movably connected to the cross beam on the side where the mobile base pops out, completing the contraction and pop-out of the mobile base.

[0054] The right side of the lower swing arm is movably connected to the swing arm bracket (abbreviated as point F), further as a horizontal rotational connection, and the swing arm bracket is fixed on the fixed-end base.

[0055] Here, the function of the moving base connecting rod is as follows: it transmits the force that makes the lower left endpoint of the lower swing arm move in an arc around the fixed point of the swing arm bracket to the cross beam on the side of the pop - out direction of the moving base, forming an outward thrust force to pop out and retract the moving base. Compared with directly connecting to the moving base, it avoids the situation that the up - and - down swing of point E is easily stuck on the moving base. By means of the moving base connecting rod, the forward thrust and backward pulling force caused by the up - and - down swing of point E are directly converted into forward thrust and backward pulling force, automatically resolving the force of the up - and - down swing and making the pushing and pulling actions of the moving base more smooth.

[0056] The lead screw nut sleeve is sleeved on the lead screw. A lead screw fixed sleeve is provided at the lower end of the lead screw. The lead screw fixed sleeve is movably connected to the lead screw component support frame (abbreviated as point G), and further is a horizontal rotational connection. A permanent magnet synchronous motor is provided on the right side of the lead screw fixed sleeve, and the two are fixedly connected together through a push rod support plate. The permanent magnet synchronous motor is provided with a first gear at the upper part of the push rod support plate, and the lead screw fixed sleeve is provided with a second gear at the upper part of the push rod support plate. The second gear is fixedly connected to the lead screw, and the two gears are meshed with each other, so as to provide the power of the permanent magnet synchronous motor to the lead screw and drive the lead screw to rotate. Since the lead screw nut cannot rotate, when the lead screw rotates, it drives the lead screw nut to move up and down; the lead screw component support frame is fixed on the fixed - end base.

[0057] The electric drive mechanism composed of the permanent magnet synchronous motor, the lead screw, and the lead screw nut drives the lead screw nut to move up and down, thereby driving the swing mechanism composed of the upper swing arm and the connecting rod to perform synchronous up - and - down movement while swinging left and right around point C. And the entire electric drive mechanism of the permanent magnet synchronous motor can also rotate around point G. This set of electric drive mechanism can also be replaced by a hydraulic drive or a pneumatic drive mechanism. Similarly, the body of the hydraulic drive or pneumatic drive mechanism can rotate around point G, and the top of the hydraulic drive or pneumatic drive mechanism can move up and down. At the same time, the top is set to enable the swing mechanism composed of the upper swing arm and the connecting rod to swing left and right around point C. Therefore, the drive mechanism of this application can be an electric drive mechanism, a hydraulic drive mechanism, or a pneumatic drive mechanism.

[0058] As can be seen from the accompanying drawings of the specification, in the embodiments of the present application, careful spatial arrangement has been made for the entire linkage mechanism. ① The support frame of the lead screw component is fixed on the left side, and the swing arm support is fixed on the left side, making full use of the left and right spaces. The lead screw nut, lead screw, and lead screw fixed sleeve are installed on the left side, and the permanent magnet synchronous motor is installed on the right side, also making full use of the left and right spaces. ② Looking from the inside out, the support frame of the lead screw component, lead screw nut, lead screw, lead screw fixed sleeve, and permanent magnet synchronous motor are installed on the innermost side, the upper swing arm and the lower swing arm are installed in the middle layer, and the swing arm support is installed on the outermost layer, making full use of the space, making the movement mechanism inside the entire column thin enough, so that the column can also be made thin enough, increasing the simplicity and beauty of the device and improving the user experience. ③ For example, the permanent magnet synchronous motor drive mechanism is only a set that can simultaneously drive the mobile base to contract and pop out and the machine cover to rotate and switch between horizontal and vertical states, which is convenient for operation and saves space.

[0059] The mobile base is completely embedded in the fixed base. The fixed base is provided with a fixed guide rail, and the mobile base is provided with a mobile guide rail adapted thereto, so that the mobile base can slide relative to the fixed base. A set of rollers is provided at each of the two outer corners of the mobile base, and a set of rollers is provided at each of the two outer corners of the fixed base.

[0060] One end of the mobile base connecting rod is movably connected to one side of the mobile base in the moving direction, and the other end is movably connected to the lower end of the left side of the lower swing arm. This movable connection is a rotational connection. The lower end of the left side of the lower swing arm rotates around the connection point between the lower swing arm and the swing arm support to generate an inward pulling force and an outward pushing force, so that the mobile base connecting rod pulls the mobile base to move relative to the fixed base, thereby achieving the technical effect that half of the fixed base is fixed and the other half of the mobile base is completely contracted and expanded.

[0061] The width of the fixed base can be designed to be close to, for example, the sum of the thickness of the mahjong machine main body and the thickness of the column, so as to fully realize the utilization of space, not occupy the site space, facilitate the storage of the device, and the overall layout is as Figure 5 and Figure 6 shown. On the upper left is the mahjong machine main body, on the upper right is the column + machine cover, and on the lower is the fixed base. When the tabletop is vertical, the overall thickness of the device is only the thickness of two tabletops, saving the occupied space of the device to the greatest extent.

[0062] There are two structures at the bottom of the fork arm. One structure is a through hole reserved for the connecting rod to extend and move, and the other structure is equipped with a micro switch. When the lead screw nut touches the micro switch, the machine cover just rotates to 90 degrees vertically. The micro switch controls the permanent magnet synchronous motor to stop working. When the machine cover just rotates to the horizontal position, there is a micro switch contact at the position of the connecting rod corresponding to this micro switch, so as to control the motor to stop rotating. Of course, when the machine cover just rotates to 90 degrees vertically, the micro switch contact that controls the permanent magnet synchronous motor to stop working by the micro switch can also be set at the corresponding position where the connecting rod stops at this time. This micro switch realizes the automatic disconnection of the circuit when the folding device reaches two states, which is safe, efficient, low in production cost and simple in structure.

[0063] There is a control switch for the permanent magnet synchronous motor on the fork arm, which can be defined to control the forward and reverse rotation of the motor in different states, so as to control the rotation of the machine cover and the contraction and ejection of the mobile base. The linkage between the control switch and the micro switch realizes the forward and reverse rotation of the permanent magnet synchronous motor.

[0064] The specific working process is as follows. For example, when the control switch is pressed to turn on, at this time, the motor rotates forward. When the machine cover rotates to the horizontal position, the micro switch contact set on the connecting rod triggers the disconnection of the motor forward rotation circuit. At this time, the working process of turning the machine cover to the horizontal is completed. At the same time, the working process of the mobile base extending is completed synchronously. When the control switch is pressed to turn off, at this time, the motor rotates in reverse. When the machine cover rotates to 90 degrees vertically, the micro switch contact set on the lead screw nut triggers the disconnection of the motor reverse rotation circuit. At this time, the working process of turning the machine cover to the vertical is completed. At the same time, the working process of the mobile base shrinking into the fixed base is completed. And so on in a cycle.

[0065] In the process of completing the work of this application, it can also solve the problem that the center of gravity of the host installed on the folding device is unstable and the equipment is easily damaged when rotating in the past. For example, when the mahjong machine host is installed on the machine cover of this application, when rotating from horizontal to vertical, the center of gravity of the mahjong machine moves from the center to one end of the fixed base. At the same time, the mobile base also shrinks to one side of the fixed base, so that the center of gravity of the mahjong machine host installed on the machine cover is always consistent with the center of gravity of the overall base composed of the mobile base and the fixed base, overcoming the problem that the unstable center of gravity is easy to damage the machine and improving the service life of the equipment. When rotating from vertical to horizontal, the center of gravity of the mahjong machine host installed on the machine cover moves from one side to the middle. At the same time, the mobile base also changes from the contracted state to the opened state, so that the center of gravity of the mahjong machine host is always consistent with the center of gravity of the overall base composed of the mobile base and the fixed base, solving the problem of unstable center of gravity of the table equipment. At the same time, when the machine cover of this application changes from horizontal to vertical on one side, the mobile base just shrinks to the same side, so that when the equipment is not in use, it only occupies half of the use space, greatly facilitating the storage and use of the equipment and improving the user experience.

[0066] In this application, when the permanent magnet synchronous motor is not installed or in the case of a power outage of the permanent magnet synchronous motor, other structures of this application can form a complete manual folding device, and the above-mentioned technical effects can also be achieved. The only difference is that one is driven by electricity and the other is manually rotated by humans, and there is no other difference. Therefore, without installing the drive mechanism, this application can form a complete manual folding device and achieve similar technical effects.

[0067] This application has a wide range of application scenarios and is convenient for disassembly and assembly. For example, the internal space of the machine cover can facilitate the installation of some structures of the table body arranged on the machine cover, such as the main body of the mahjong table, so as to facilitate the disassembly, assembly and maintenance of various main machines installed on the machine cover, such as the main body of the mahjong machine or the poker machine, and improve the overall user experience of the equipment.

[0068] The design concept of this application is that the linkage mechanism in the column can be an independent set of linkage mechanisms and can be applied to columns or columnar spaces with similar functions to this application.

[0069] An up-and-down linkage mechanism includes: a fixed bracket, a drive mechanism, and a swing mechanism; the drive mechanism includes a drive mechanism body and a drive mechanism mobile end; the fixed bracket is movably connected to the drive mechanism body, and the swing mechanism is movably connected to the drive mechanism mobile end.

[0070] The drive mechanism includes a rotating mechanism, the rotating mechanism is movably connected to the fixed bracket, the rotating mechanism includes a first rotating arm, and the end point of the first rotating arm is movably connected to the lower end point of the swing mechanism.

[0071] The first rotating arm rotates from a position of 45 degrees downward from the horizontal to a position of 45 degrees upward from the horizontal. The purpose is to minimize the left-right displacement of the swing mechanism during swinging.

[0072] The rotating mechanism includes a second rotating arm, and the second rotating arm rotates from a position of 45 degrees to the left vertically to a position of 45 degrees to the right vertically. The purpose is to convert the up-and-down swing into a left-right swing. The purpose is to minimize the up-and-down displacement of the swing mechanism during swinging.

[0073] The up-and-down linkage mechanism includes: a lower horizontal moving component (corresponding to the mobile end base), and the lower horizontal moving component is movably connected to the end point of the second rotating arm.

[0074] The drive mechanism body is arranged inside the fixed bracket.

[0075] The up-and-down linkage mechanism includes: an upper rotating component (corresponding to the machine cover), the upper end point of the swing mechanism is movably connected to the upper rotating component, and the connection line formed by the rotation axis point of the upper rotating component and the upper end point of the swing mechanism rotates from a position of 45 degrees downward from the horizontal to a position of 45 degrees upward from the horizontal. This exactly corresponds to the machine cover completing a 90-degree fold.

[0076] The up-and-down linkage mechanism includes a microswitch, which is electrically connected to the driving mechanism. The microswitch is fixed at a position close to the swinging mechanism, and a microswitch contact adapted to the microswitch is provided at the corresponding position of the swinging mechanism to complete the stroke.

[0077] The innovation of the design of this application lies in:

[0078] The function of the lower swing arm is to convert the left-right movement of the mobile base into up-down movement. Therefore, the stroke of point E that swings up and down around point F is converted into the stroke of point E that swings left and right through the lower swing arm, so that the mobile base moves left and right;

[0079] The swinging mechanism composed of the upper swing arm and the connecting rod is integrally movably connected to the lead screw nut through point C. As the lead screw nut continuously moves upward, the inclination of the whole swinging mechanism depends on the real-time positions of points B and D, and the real-time position of point C determines the inclination angle between point C and point G, that is, the inclination angle of the lead screw, because the lead screw fixing sleeve is also movably connected to the lead screw fixing support frame;

[0080] In this application, the permanent magnet synchronous motor and the lead screw fixing sleeve are arranged in the overall support frame composed of the swing arm support and the lead screw component support frame, making full use of the space inside the column. And the transmission mechanism composed of the connecting rod, the upper swing arm and the lower swing arm is located outside the driving mechanism, also making full use of the space inside the column;

[0081] For this application, after the machine cover rotates to completion, whether it is vertical or horizontal, the connecting rod is in a vertical state, that is, the up-down displacement changes, but the left-right displacement does not change. This requires that the trajectory generated by the rotation of the line segment formed by points A and B is a quarter circle and is exactly bisected by the horizontal line. In this way, point B is found to ensure that when the machine cover is vertical, the connecting rod is in a vertical state and exactly fits completely with the bottom of the connecting rod embedding groove. Similarly, the trajectory generated by the rotation of the line segment formed by points D and F is also a quarter circle and is exactly bisected by the horizontal line. In this way, the upper swing arm remains in a vertical state in both two different states (after the machine cover rotates to completion, whether it is vertical or horizontal), that is, the up-down displacement changes, but the left-right displacement does not change. Thus, the permanent magnet synchronous motor is also correspondingly in a vertical state.

[0082] With the above-mentioned precise structural design, whether the machine cover is in a horizontal or vertical state, the line segment AB or FE always maintains an angle of 45 degrees with the horizontal line. The swing mechanism composed of the upper swing arm and the connecting rod has the smallest swing amplitude during the folding process, and the swing mechanism composed of the upper swing arm and the connecting rod is in a vertical state in both folded states. Compared with the case where the line segment AB or FE does not maintain an angle of 45 degrees with the horizontal line and the swing mechanism composed of the upper swing arm and the connecting rod is in a non-vertical state in both folded states, the advantages of this design are energy savings, increased service life of the equipment, and a smaller space occupied by the swing of the swing mechanism composed of the upper swing arm and the connecting rod, enabling the up-and-down mechanism linkage rotation in a more slender and narrow space, providing more possibilities for the application of the entire up-and-down linkage mechanism in more slender and narrow spaces.

[0083] Further optimize the trajectory of EF, and design it so that the angle between EF and the line segment DF is exactly 90 degrees and is exactly bisected by the vertical line. In this way, with a determined length of EF, the horizontal displacement corresponding to the arc is the longest, and the swing amplitude between the upper and lower parts is the smallest, so the force is more evenly distributed and symmetric, increasing the service life of the equipment. At the same time, because the swing amplitude between the upper and lower parts is the smallest, the base can also be designed to be thinner.

[0084] This application fully considers the space conditions of the machine cover, the column, and the base, and designs a folding device with precise structure, low cost, high efficiency, and strong compatibility, achieving high space utilization rate and a stable center of gravity during operation, thereby improving the user experience.

[0085] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising", or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device including a series of elements not only includes those elements but also includes other elements not explicitly listed, or elements inherent to such process, method, article, or device. Finally, it should be stated that the above are only the preferred embodiments of this application and are not used to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. An up-and-down linkage mechanism, characterized in that, Including: A fixed bracket, a driving mechanism, and a swinging mechanism; The driving mechanism includes a driving mechanism body and a mobile end of the driving mechanism; The fixed bracket is movably connected to the driving mechanism body, and the swinging mechanism is movably connected to the mobile end of the driving mechanism.

2. The up-and-down linkage mechanism according to claim 1, characterized in that, The driving mechanism includes any one of an electric driving mechanism, a hydraulic driving mechanism, or a pneumatic driving mechanism.

3. The up-and-down linkage mechanism according to claim 2, characterized in that, The driving mechanism is an electric driving mechanism; The driving mechanism body includes a permanent magnet synchronous motor and a lead screw assembly driven by the permanent magnet synchronous motor; The mobile end of the driving mechanism is a lead screw nut adapted to the lead screw assembly.

4. The up-and-down linkage mechanism according to claim 3, characterized in that, The lead screw assembly includes: a lead screw fixed sleeve and a lead screw. The lead screw fixed sleeve is movably connected to the fixed bracket, and the permanent magnet synchronous motor drives the lead screw to rotate by means of gear meshing transmission.

5. The up-and-down linkage mechanism according to claim 1, wherein The up-and-down linkage mechanism includes a rotating mechanism. The rotating mechanism is movably connected to the fixed bracket. The rotating mechanism includes a first rotating arm and a second rotating arm. The end point of the first rotating arm is movably connected to the lower end point of the swinging mechanism.

6. The up-and-down linkage mechanism according to claim 5, characterized in that, The rotation range of the first rotating arm is from the position of 45 degrees downward horizontally to the position of 45 degrees upward horizontally.

7. The up-and-down linkage mechanism according to claim 5, characterized in that, The rotation range of the second rotating arm is from the position of 45 degrees to the left vertically to the position of 45 degrees to the right vertically.

8. A vertical linkage mechanism according to claim 1, characterized in that, The driving mechanism body is arranged inside the fixed bracket.

9. The up-and-down linkage mechanism according to claim 1, characterized in that, The up-and-down linkage mechanism includes a microswitch. The microswitch is electrically connected to the driving mechanism.

10. A kind of up-and-down linkage mechanism according to claim 9, characterized in that, The microswitch is fixed beside the swinging mechanism. The swinging mechanism is provided with a microswitch contact adapted to the microswitch.

11. A kind of up-and-down linkage mechanism according to claim 10, characterized in that, The microswitch is fixed beside the position where the swinging mechanism extends out of the column.

12. A folding device according to claim 1, characterized in that, The up-and-down linkage mechanism includes: an upper rotating component. The upper end point of the swinging mechanism is movably connected to the upper rotating component. The rotation range of the connecting line formed by the rotation axis point of the upper rotating component and the upper end point of the swinging mechanism is from the position of 45 degrees downward horizontally to the position of 45 degrees upward horizontally.

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