Folding device and folding mahjong machine

Abstract

The utility model belongs to the technical field of folding structures, and particularly relates to a folding device and a folding mahjong machine. Comprising a machine cover, a stand column and a base, the machine cover is movably connected with the top end of the stand column, the base comprises a fixed end base and a movable end base, and the bottom end of the stand column is fixed to the fixed end base; in the process that the machine cover is folded around the stand column to one side of the stand column, the movable end base moves towards one side of the fixed end base, the rotation process of the machine cover and the popping-out process of the movable end base are synchronous, and the movement of the gravity center of a table top on the machine cover is basically kept consistent with the real-time center of the whole base. The defects of unstable gravity center and large occupied space after folding are overcome, meanwhile, ejection of the base and rotation of the machine cover are synchronously carried out, and the use experience feeling of a user is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of folding structure, and particularly relates to a folding device and a folding mahjong machine. BACKGROUND

[0002] In order to facilitate transportation and save storage space in a non-use state, the tabletop of the existing table, especially a mahjong table, is usually hinged to the top end of the stand column. When transporting or storing, the tabletop is folded along the hinge, so that the bottom of the tabletop is attached to one side of the stand column, thereby achieving the purpose of convenience and space saving during transportation and storage. However, in the prior art, the supporting base of the table, especially the mahjong table, is usually a non-foldable mechanism. Although the area of the base is smaller than that of the tabletop, the protruding base still occupies a certain space after the tabletop is folded on the side opposite to the stand column. From the perspective of saving storage space, at least the existing folding table, especially the folding mahjong table, needs to be improved.

[0003] Taking a mahjong table as an example, the base can stably support the mahjong table in a normal state, but in a folded state, due to the overturning of the tabletop, the center of gravity of the mahjong table as a whole deviates to the folding side. However, the supporting center of the base does not have a corresponding adjustment. Therefore, the existing folding mahjong table has poor stability when only relying on the base for support after being folded, and is prone to tilting to the folding side of the tabletop, and is usually placed against a wall.

[0004] Many folding devices for tables on the market often have the folding structure of the tabletop and the stand column exposed outside, which is not only unsightly but also easy to be damaged by touching. In addition, the stand column of the existing folding device is thick and unsightly, and the thickness of the base is also high, which affects the user's experience and feeling and occupies space.

[0005] All the above problems are hot and painful problems in the field that need to be solved. CONTENT OF THE UTILITY MODEL

[0006] The application aims to provide a folding device and a folding mahjong machine.

[0007] A folding device comprises a machine cover, a stand column and a base. The machine cover and the stand column are movably connected at the top end. The base comprises a fixed-end base and a movable-end base. The bottom end of the stand column is fixed on the fixed-end base.

[0008] During folding of the machine cover around the stand column to one side of the stand column, the movable-end base moves to the side of the fixed-end base.

[0009] Preferably, during folding of the machine cover around the stand column to one side of the stand column, the movable-end base gradually embeds into the fixed-end base.

[0010] Preferably, the top end of the column is provided with a fork arm, and the machine cover is movably connected with the fork arm.

[0011] Preferably, the fork arm is U-shaped, and the upper left corners of the two arms of the fork arm are movably connected with the machine cover.

[0012] Preferably, the thickness of the machine cover is the same as or close to the width of the fork arm, and the thickness of the machine cover is the same as or close to the depth of the fork arm.

[0013] Preferably, the machine cover is provided with machine cover support plates on both sides, the lower right corners of the two arms of the fork arm are provided with locking shafts, and the machine cover support plates are provided with locking holes matched with the locking shafts.

[0014] Preferably, the outer side of the locking shaft is provided with a locking turntable.

[0015] Preferably, the upper left corners of the two arms of the fork arm are movably connected with the machine cover, and the rotating position is provided with a spring.

[0016] Preferably, the bottom of the machine cover is provided with a swing mechanism embedding groove.

[0017] Preferably, the fixed end base is provided with a fixed end guide rail, and the movable end base is provided with a movable end guide rail matched with the fixed end guide rail.

[0018] Preferably, the outer side of the movable end base is provided with a group of rollers at each corner, and the outer side of the fixed end base is provided with a group of rollers at each corner.

[0019] Preferably, the movable end base is provided with a movable base connecting rod, and the movable base connecting rod is movably connected with the machine cover.

[0020] One end of the movable base connecting rod is movably connected with the outermost cross beam of the movable end base, and the other end is movably connected with the machine cover.

[0021] Preferably, the column is internally provided with an up-down linkage mechanism, and the up-down linkage mechanism comprises a fixed support, a driving mechanism, and a swing mechanism.

[0022] The driving mechanism comprises a driving mechanism body and a driving mechanism movable end.

[0023] The fixed support is movably connected with the driving mechanism body, and the swing mechanism is movably connected with the driving mechanism movable end.

[0024] The upper end of the swing mechanism is movably connected with the bottom of the machine cover, the lower end of the swing mechanism is movably connected with the movable end base, and the fixed support is fixed on the fixed end base.

[0025] Preferably, the driving mechanism comprises any one of an electric driving mechanism, a hydraulic driving mechanism or a pneumatic driving mechanism.

[0026] Preferably, the driving mechanism is an electric driving mechanism,

[0027] The driving mechanism body comprises a permanent magnet synchronous motor and a screw rod assembly driven by the permanent magnet synchronous motor;

[0028] The driving mechanism moving end is a screw rod nut adapted to the screw rod assembly.

[0029] Preferably, the screw rod assembly comprises a screw rod fixed sleeve and a screw rod, the screw rod fixed sleeve is movably connected with the fixed support, and the permanent magnet synchronous motor drives the screw rod to rotate in a gear engagement transmission manner.

[0030] Preferably, the up-down linkage mechanism comprises a rotating mechanism, the rotating mechanism is movably connected with the fixed support, the rotating mechanism comprises a first rotating arm and a second rotating arm, an end point of the first rotating arm is movably connected with a lower end point of the swinging mechanism, and an end point of the second rotating arm is movably connected with the moving end base.

[0031] Preferably, the rotating range of the first rotating arm is from a horizontal downward 45-degree angle position to a horizontal upward 45-degree angle position.

[0032] Preferably, the rotating range of the second rotating arm is from a vertical leftward 45-degree angle position to a vertical rightward 45-degree angle position.

[0033] Preferably, the driving mechanism body is arranged in the fixed support.

[0034] Preferably, the rotating range of the line formed by the rotating shaft point of the machine cover and the upper end point of the swinging mechanism is from a horizontal downward 45-degree angle position to a horizontal upward 45-degree angle position.

[0035] Preferably, the up-down linkage mechanism comprises a micro switch, and the micro switch is electrically connected with the driving mechanism.

[0036] Preferably, the micro switch is fixed beside the swinging mechanism, and the swinging mechanism is provided with a micro switch contact point adapted to the micro switch.

[0037] Preferably, the micro switch is fixed at a position where the swinging mechanism extends out of the stand column.

[0038] A folding mahjong machine comprises a mahjong machine tabletop and a folding device as claimed in any one of the preceding claims, and the mahjong machine tabletop is arranged on the machine cover.

[0039] Compared with the prior art, the present application has the following technical effects:

[0040] ①, the base is divided into a mobile end base and a fixed end base, the stand is arranged on the fixed end base, when the mobile end base is completely popped out, the machine cover is horizontal, the overall base is symmetrical left and right, the machine cover rotation and the mobile end base pop-out process are realized synchronously, and the center of gravity of the desktop on the machine cover moves and is basically kept consistent with the real-time center of the overall base, the defects of unstable center of gravity and large space occupation after folding are overcome, the base pop-out and the machine cover rotation are simultaneously performed, and the use experience of users is improved.

[0041] ②, when the machine cover is horizontal, the fork arm height is flush with the surface of the machine cover, and the machine cover is arranged in the middle, when the machine cover is vertical, the fork arm thickness is the same as the thickness of the machine cover, and can be about the thickness of one desktop, when the mobile end base is completely popped out, the base formed by the fixed end base and the mobile end base is arranged in symmetry, so that the space is fully utilized and saved, the machine cover is convenient to install and replace the desktop, and the space in the machine cover can also be used to install the accessory structure necessary for the desktop, the compatibility of the folding device is improved, various desktop devices such as an electric mahjong machine host or an electric poker host can be conveniently installed on the machine cover.

[0042] In the present application, the fork arm thickness is the same as the stand thickness, and the fork arm thickness is the same as the machine cover thickness, when the machine cover is vertical, the swing mechanism is embedded in the machine cover, so that the desktop on the side of the machine cover where the desktop is installed is close to the machine cover and the stand after folding, the space is saved, and the swing mechanism is protected.

[0043] ③, the up-down linkage mechanism in the whole stand swings synchronously under the condition that the swing mechanism moves up and down, and the space occupied by the up-down linkage mechanism is saved under the condition that the swing amplitude is very small, through the specific positional relationship between the point connected with the swing mechanism (in the specific embodiment, the point is composed of an upper swing arm and a connecting rod) and the rotation point of the machine cover or the rotation point of the rotation mechanism (in the specific embodiment, the rotation mechanism is specifically a lower swing arm), the up-down movement stroke of the swing mechanism can be converted into the actual required rotation stroke of the machine cover or the rotation mechanism, and the rotation mechanism converts the up-down stroke into the left-right stroke through the setting of a first rotation arm and a second rotation arm, so that the machine cover is 90 degrees flipped and the mobile end base moves left and right synchronously.

[0044] ④, through the above design, the structure components are greatly reduced, the space of the equipment is fully utilized, the production cost is reduced, the installation and maintenance are convenient, the use experience of users is improved, and unexpected technical effects are obtained. BRIEF DESCRIPTION OF DRAWINGS

[0045] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application, and together with the description serve to explain the present application, but are not intended to limit the present application in any manner. In the drawings:

[0046] Figure 1 The mobile end base is retracted while the machine cover is in a vertical state, a perspective view;

[0047] Figure 2 The mobile end base is retracted while the machine cover is in a vertical state, a left view and a front view;

[0048] Figure 3 The end base with a table is unfolded while the machine cover is in a horizontal state, a perspective view;

[0049] Figure 4 The end base with a table is folded to half rotation;

[0050] Figure 5 The end base with a table is folded to vertical rotation, a right view, a rear view, a left view and a front view;

[0051] Figure 6 The end base with a table is folded to vertical rotation, a perspective view;

[0052] Figure 7 A perspective structure without a column shell and a base shell Figure 1 ;

[0053] Figure 8 A perspective structure without a column shell and a base shell Figure 2 ;

[0054] Figure 9 A perspective structure without a column shell, a base shell and a machine cover

[0055] Figure 10 A column and a base internal structure diagram when the machine cover is in a vertical state

[0056] Figure 11 A machine cover structure diagram

[0057] Figure 12 A permanent magnet synchronous motor driving screw part structure diagram

[0058] Figure 13 A column and a base internal structure diagram when the machine cover is in a horizontal state

[0059] In the diagram: Desktop 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 bracket plate 38, Permanent magnet synchronous motor 39; Base 4, Fixed end base 41, Fixed end guide rail 411, Moving end base 42, Moving end guide rail 421, Moving base connecting rod 422. Detailed Implementation

[0060] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0061] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0062] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0063] This embodiment consists of several parts, such as Figures 1-13 As shown, it specifically includes: a machine cover rotatably connected to the upper end of the column and a fixed end base at the bottom of the column, with a movable end base embedded in the fixed end base.

[0064] The machine cover, installed between the fork arms at the top of the column, has U-shaped fork arms. When the machine cover is horizontal, it is located exactly in the middle of the fork arms. This ensures that when a mahjong machine host is installed on the machine cover, the center of gravity is centered. When the machine cover is perpendicular to the fork arms, it is located inside the fork arms. In other words, the top surface of the machine cover and the ground are flush with the two sides of the fork arms. This ensures the aesthetic and simple style of the equipment and improves the user experience.

[0065] In this embodiment, a machine cover support plate is arranged between the machine cover and the fork arm, the machine cover support plate is fixed on the machine cover, and the machine cover support plate is arranged at the upper left corner of the fork arm through a rotating shaft (referred to as point A). When the machine cover is horizontal, the machine cover is located at the middle position of the fork arm. When the machine cover is vertical, the lower half of the machine cover is located in the fork arm.

[0066] A compression spring is arranged in the rotating shaft at the upper left corner of the fork arm. The spring is in a natural state when the machine cover is horizontal, and is in a compressed state when the machine cover is vertical. When the machine cover is changed from vertical to horizontal, the motor needs more power and the output power is larger. The compression spring can provide a certain rotating power, thereby reducing the power output of the motor and saving the power consumption. When the machine cover is rotated from vertical to horizontal, the spring can also play a good buffering role.

[0067] In order to make the machine cover and the fork arm more stable and not shake, whether the machine cover is horizontal or vertical relative to the fork arm, a locking seat is arranged at the lower right corner of the fork arm, a locking hole corresponding to the locking seat is arranged at the corresponding position of the machine cover support plate, a locking shaft is arranged in the locking seat, and a locking rotating disc is arranged outside the locking shaft. The mechanism can be arranged, for example, to be locked by rotating 90 degrees clockwise, and unlocked in the opposite direction. The machine cover support plate has two locking holes, one hole corresponding to the horizontal machine cover and the other hole corresponding to the vertical machine cover.

[0068] A connecting rod embedding groove is arranged at the bottom of the machine cover for embedding the connecting rod. When the machine cover is vertical, the connecting rod is embedded in the groove, preventing the connecting part of the connecting rod and the machine cover from being exposed at the bottom of the machine cover, which is easy to damage the connecting rod and the connecting part of the connecting rod and the machine cover. At the same time, the appearance style of the equipment can be kept simple and beautiful, and the user's use comfort can be improved.

[0069] The upper end of the connecting rod is movably connected with the bottom of the machine cover (referred to as point B), the lower end of the connecting rod is fixed on 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 with the screw nut (referred to as point C), which is further connected for horizontal rotation. Figure 10 As shown in the figure, when the machine cover is in a vertical state, the bottom of the upper swing arm is movably connected with the upper end of the left side of the lower swing arm (referred to as point D), which is further connected for horizontal rotation. The lower end of the left side of the lower swing arm can be directly movably connected with the mobile end base (referred to as point E), or the lower end of the left side of the lower swing arm can be movably connected with the mobile base connecting rod, which is further connected for horizontal rotation. The mobile base connecting rod is movably connected with the beam on the side of the mobile end base in the direction of being popped out, so as to complete the contraction and popping out of the mobile end base.

[0070] The right side of the lower swing arm is movably connected with the swing arm support (referred to as point F), which is further connected for horizontal rotation. The swing arm support is fixed on the fixed end base.

[0071] Here, the role of the moving base connecting rod is to transmit the force of the circular motion of the lower swing arm left side lower end point around the swing arm support fixed point to the cross beam on the side of the pop-up direction of the moving end base, forming an outward pushing force, and performing the pop-up and retraction of the moving end base. Compared with being directly connected to the moving end base, it avoids the E point from being easily stuck on the moving end base by the upward and downward swing. By the moving base connecting rod, the forward pushing force and the backward pulling force of the E point upward and downward swing are directly converted into forward pushing force and backward pulling force, automatically solving the upward and downward swing force, making the push-pull action of the moving end base more smooth.

[0072] The screw rod nut is sleeved on the screw rod, the lower end of the screw rod is provided with a screw rod fixed sleeve, the screw rod fixed sleeve is movably connected with the screw rod part support frame (referred to as G point), and the screw rod fixed sleeve is further connected with the screw rod part support frame in a horizontal rotating manner. The right side of the screw rod fixed sleeve is provided with a permanent magnet synchronous motor, 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 portion of the push rod support plate, and the screw rod fixed sleeve is provided with a second gear at the upper portion of the push rod support plate. The second gear is fixedly connected with the screw rod, and the two gears are meshed, so that the power of the permanent magnet synchronous motor is provided to the screw rod to drive the screw rod to rotate. Since the screw rod nut cannot rotate, the screw rod nut moves up and down when the screw rod rotates. The screw rod part support frame is fixed on the fixed end base.

[0073] The electric drive mechanism composed of the permanent magnet synchronous motor, the screw rod and the screw rod nut drives the screw rod nut to move up and down, thereby driving the swing mechanism composed of the upper swing arm and the connecting rod to move up and down synchronously and swing left and right around the C point. The whole electric drive mechanism of the permanent magnet synchronous motor can rotate around the G point. The electric drive mechanism can also be replaced by a hydraulic drive or a pneumatic drive mechanism. The body of the hydraulic drive or the pneumatic drive mechanism can also rotate around the G point. The top end of the hydraulic drive or the pneumatic drive mechanism can move up and down, and the top end is arranged to enable the swing mechanism composed of the upper swing arm and the connecting rod to swing left and right around the C point. Therefore, the drive mechanism of the application can be an electric drive mechanism, a hydraulic drive mechanism or a pneumatic drive mechanism.

[0074] As can be seen from the accompanying drawings, the embodiment of the present application carefully arranges the entire linkage mechanism in space, ①, the screw rod component support frame is fixed on the left side, the swing arm support is fixed on the left side, the left and right spaces are fully utilized, the screw rod nut, the screw rod and the screw rod fixing sleeve are installed on the left side, and the permanent magnet synchronous motor is installed on the right side, which also fully utilizes the left and right spaces, ②, from inside to outside, the screw rod component support frame, the screw rod nut, the screw rod, the screw rod fixing sleeve and the permanent magnet synchronous motor are installed on the innermost side, the upper swing arm and the lower swing arm are installed on the middle layer, and the swing arm support is installed on the outermost layer, which fully utilizes the space, so that the movement mechanism in the entire stand column is thin enough, thereby making the stand column also thin enough, increasing the simplicity and beauty of the equipment, and improving the user experience; ③for example, the permanent magnet synchronous motor driving mechanism can simultaneously drive the mobile end base to retract and pop up and the machine cover to rotate to switch between the horizontal and vertical states, which is convenient to operate and saves space.

[0075] The mobile end base is completely embedded in the fixed end base, the fixed end base is provided with a fixed end guide rail, and the mobile end base is provided with a mobile end guide rail matched therewith, so that the mobile end base can slide relative to the fixed end base, and each of the two corners on the outer side of the mobile end base is provided with a set of rollers, and each of the two corners on the outer side of the fixed end base is provided with a set of rollers.

[0076] One end of the mobile base connecting rod is movably connected to one side of the mobile end 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, and the movable connection is a rotary connection, the lower end of the left side of the lower swing arm rotates around the connecting point of the lower swing arm and the swing arm support to generate an inward pulling force and an outward pushing force, so that the mobile end base is pulled by the mobile base connecting rod to move relative to the fixed end base, thereby realizing the technical effect that the fixed end base is half fixed and the other half of the mobile end base is completely retracted and expanded.

[0077] The width of the fixed end base can be designed to be close to the sum of the thickness of the mahjong machine main machine and the thickness of the stand, so that the space utilization can be fully realized, the site space is not occupied, the storage of the equipment is facilitated, and the overall layout is as shown in Figure 5 and Figure 6 The upper left side is the mahjong machine main machine, the upper right side is the stand + machine cover, and the lower side is the fixed end base. When the table top is vertical, the overall thickness of the equipment is only the thickness of two table tops, which maximally saves the occupied space of the equipment.

[0078] The fork arm bottom is provided with two structures, one structure is a reserved connecting rod hole which can extend and move, and the other structure is provided with a micro switch, when the screw nut contacts the micro switch, the machine cover is just turned to 90 degrees, the micro switch controls the permanent magnet synchronous motor to stop working, when the machine cover is just turned to the horizontal position, the micro switch corresponding to the connecting rod position is provided with a micro switch contact, thereby controlling the motor to stop rotating. Of course, the micro switch contact of the machine cover just turned to 90 degrees, the micro switch controls the permanent magnet synchronous motor to stop working, the micro switch contact can also be arranged at the corresponding position where the connecting rod stops at this time, and the micro switch realizes the automatic disconnection of the circuit when the two states of the folding device are completed, which is safe, efficient, low in production cost and simple in structure.

[0079] The fork arm is provided with a control switch of the permanent magnet synchronous motor, which can be defined as controlling the forward rotation and reverse rotation of the motor, thereby controlling the rotation of the machine cover and the contraction and ejection of the mobile end base. The linkage of the control switch and the micro switch realizes the forward rotation and reverse rotation of the permanent magnet synchronous motor.

[0080] The specific working process is that, for example, the control switch is pressed on, at this time, the motor rotates forward, the machine cover is turned to the horizontal position, the micro switch contact arranged on the connecting rod triggers the motor forward rotation circuit to be disconnected, at this time, the machine cover is turned to the horizontal position, and the working process is completed, and at the same time, the mobile end base is extended, and the working process is completed; the control switch is pressed off, at this time, the motor rotates reversely, the machine cover is turned to 90 degrees, the micro switch contact arranged on the screw nut triggers the motor reverse rotation circuit to be disconnected, at this time, the machine cover is turned to 90 degrees, and the working process is completed, and at the same time, the mobile end base is retracted into the fixed end base, and the working process is completed. The above processes are repeated.

[0081] In the process of completing the application, the problem that the center of gravity of the main machine installed on the machine cover is unstable and the equipment is easily damaged when the folding device rotates in the prior art is solved. For example, when the machine cover of the application is installed with a mahjong machine main machine and is turned from the horizontal position to the vertical position, the center of gravity of the mahjong machine moves from the center to one side of the fixed end base, and at the same time, the mobile end base is retracted to one side of the fixed end base, so that the center of gravity of the mahjong machine main machine installed on the machine cover is always consistent with the center of gravity of the whole base composed of the mobile end base and the fixed end base, thereby solving the problem that the center of gravity of the table body equipment is unstable, improving the service life of the equipment, and solving the problem that the center of gravity of the mahjong machine main machine installed on the machine cover is unstable when the machine cover is turned from the vertical position to the horizontal position, the center of gravity of the mahjong machine moves from one side to the center, and at the same time, the mobile end base is retracted to the open state, so that the center of gravity of the mahjong machine main machine is always consistent with the center of gravity of the whole base composed of the mobile end base and the fixed end base, thereby solving the problem that the center of gravity of the table body equipment is unstable. At the same time, when the machine cover of the application is turned from the horizontal position to the vertical position, the mobile end base is retracted to the same side, so that the equipment only occupies half of the use space when not in use, greatly facilitating the storage and use of the equipment, and improving the user experience.

[0082] In the present application, when the permanent magnet synchronous motor is not set or the permanent magnet synchronous motor is powered off, the other structures of the present application can constitute a complete manual folding device, which can also achieve the above technical effects, but one is electric rotation and the other is manual rotation, and there is no difference. Therefore, the present application can also constitute a complete manual folding device without installing a driving mechanism, and can also achieve similar technical effects.

[0083] The present application has a wide range of applications and is easy to disassemble and assemble. For example, the internal space of a machine cover can be used to conveniently install part of the structure of a table body on the machine cover, such as a mahjong table main machine, thereby facilitating the disassembly, assembly, and maintenance of various main machines installed on the machine cover, such as mahjong machines or poker machines, and improving the overall user experience of the equipment.

[0084] The design idea of the present application is that the linkage mechanism in the stand can be an independent set of linkage mechanisms applied in a stand or a columnar space with similar functions to the present application.

[0085] An up-down linkage mechanism comprises a fixed support, a driving mechanism, and a swing mechanism. The driving mechanism comprises a driving mechanism body and a driving mechanism moving end. The fixed support is movably connected with the driving mechanism body, and the swing mechanism is movably connected with the driving mechanism moving end.

[0086] The driving mechanism comprises a rotating mechanism, which is movably connected with the fixed support. The rotating mechanism comprises a first rotating arm, and the end point of the first rotating arm is movably connected with the lower end point of the swing mechanism.

[0087] The first rotating arm rotates from a horizontal downward 45-degree angle position to a horizontal upward 45-degree angle position. The purpose is to minimize the left-right displacement of the swing mechanism.

[0088] The rotating mechanism comprises a second rotating arm, which rotates from a vertical left 45-degree angle position to a vertical right 45-degree angle position. The purpose is to convert up-down swing into left-right swing, and to minimize the up-down displacement of the swing mechanism.

[0089] The up-down linkage mechanism comprises a lower horizontal moving component (corresponding to the moving end base), which is movably connected with the end point of the second rotating arm.

[0090] The driving mechanism body is arranged in the fixed support.

[0091] The up-down linkage mechanism comprises an upper rotating component (corresponding to the machine cover), and the upper end point of the swing mechanism is movably connected with the upper rotating component. The connecting line between the rotation axis point of the upper rotating component and the upper end point of the swing mechanism rotates from a horizontal downward 45-degree angle position to a horizontal upward 45-degree angle position. This corresponds to the completion of 90-degree folding of the machine cover.

[0092] The up-down linkage mechanism comprises a micro switch, and the micro switch is electrically connected with the driving mechanism.

[0093] The innovation of the application lies in that:

[0094] The lower swing arm converts the left-right movement of the mobile end base into up-down movement, so that the up-down swing of the E point around the F point is converted into left-right swing, so that the mobile end base moves left and right.

[0095] The swing mechanism composed of the upper swing arm and the connecting rod is movably connected to the screw nut through the C point, and the inclination of the swing mechanism depends on the real-time positions of the B point and the D point, and the real-time position of the C point determines the inclination angle of the C point and the G point, that is, the inclination angle of the screw rod, because the screw rod fixing sleeve is movably connected with the screw rod fixing support frame.

[0096] The application sets the permanent magnet synchronous motor and the screw rod fixing sleeve in the overall support frame composed of the swing arm support frame and the screw rod component support frame, fully utilizes the space in 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, which also fully utilizes the space in the column.

[0097] For the application, when the machine cover is rotated, whether vertically or horizontally, the connecting rod is in a vertical state, that is, the up-down displacement changes, but the left-right displacement does not change, which requires that the locus generated by the rotation of the line segment formed by the A point and the B point is a quarter circle, and is exactly bisected by the horizontal line, so that the B point is found, and the connecting rod is in a vertical state when the machine cover is vertical, and is exactly embedded in the groove bottom. Similarly, the locus generated by the rotation of the line segment formed by the D point and the F point is also a quarter circle, and is exactly bisected by the horizontal line, so that the upper swing arm remains in a vertical state in two different states (when the machine cover is rotated, whether vertically or horizontally), that is, the up-down displacement changes, but the left-right displacement does not change, so that the permanent magnet synchronous motor is also in a vertical state.

[0098] The precise structure design described above, whether the machine cover is in a horizontal or vertical state, the AB line segment or the FE line segment always maintains a 45-degree angle with the horizontal line, the swing range of the swing mechanism composed of the upper swing arm and the connecting rod is the smallest during folding, and the swing mechanism composed of the upper swing arm and the connecting rod is in a vertical state in the two states after folding. Compared to the case where the AB line segment or the FE line segment maintains a 45-degree angle with the horizontal line, the swing mechanism composed of the upper swing arm and the connecting rod is in a non-vertical state in the two states after folding. The advantages of this design are that energy consumption is saved, the service life of the equipment is improved, and the swing mechanism composed of the upper swing arm and the connecting rod occupies less space, which can be applied to more narrow and long spaces to provide more possibilities for the up-and-down mechanism linkage rotation.

[0099] Further optimize the trajectory of EF, design as the angle between EF and DF line segment is exactly 90 degrees, and is exactly bisected by the vertical line, so that under the determined EF length, the horizontal displacement corresponding to the circular arc is the longest, and the swing range between the upper and lower is the smallest, thereby the stress is also more uniform and symmetrical, which improves the service life of the equipment. At the same time, because the swing range between the upper and lower is the smallest, the base can also be designed to be thinner.

[0100] The application fully considers the space situation of the machine cover, the stand and the base, and designs a folding device with precise structure, low cost, high efficiency and strong compatibility, which realizes high space utilization, stable gravity center during operation, and improves the user experience.

[0101] It should be noted that in this paper, relationship 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 such actual relationship or order between the entities or operations. Moreover, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Finally, it should be noted that the above is only the preferred embodiment of the application and does not limit the application, although the application has been described in detail with reference to the foregoing embodiments, and those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. A folding device, characterized in that, The machine cover, the stand and the base are connected movably at the top end of the stand, the base comprises a fixed end base and a movable end base, and the bottom end of the stand is fixed on the fixed end base; During folding of the machine cover to one side of the stand, the movable end base moves to the side of the fixed end base.

2. A folding device according to claim 1, characterized in that During folding of the machine cover to one side of the stand, the movable end base is gradually embedded in the fixed end base.

3. The folding device of claim 1, wherein The top end of the stand is provided with a fork arm, and the machine cover is movably connected with the fork arm.

4. A folding device according to claim 3, wherein The fork arm is U-shaped, and the upper left corners of the two arms of the fork arm are movably connected with the machine cover.

5. A folding device according to claim 4, characterized in that The thickness of the machine cover is the same as or close to the width of the fork arm, and the thickness of the machine cover is the same as or close to the depth of the fork arm.

6. A folding device according to claim 4, wherein The machine cover is provided with machine cover support plates on both sides, the lower right corners of the two arms of the fork arm are provided with locking shafts, and the machine cover support plates are provided with locking holes matched with the locking shafts.

7. A folding device according to claim 6, characterized in that The outer side of the locking shaft is provided with a locking turntable.

8. The folding device of claim 4, wherein The upper left corners of the two arms of the fork arm are provided with springs at the rotating positions movably connected with the machine cover.

9. The folding device of claim 1, wherein The bottom of the machine cover is provided with an embedded slot of a swing mechanism.

10. The folding device of claim 2, wherein The fixed end base is provided with a fixed end guide rail, and the movable end base is provided with a movable end guide rail matched with the fixed end guide rail.

11. The folding device of claim 2, wherein The outer sides of the two corners of the movable end base are each provided with a set of rollers, and the outer sides of the two corners of the fixed end base are each provided with a set of rollers.

12. The folding apparatus of claim 10, wherein The movable end base is provided with a movable base connecting rod, and the movable base connecting rod is movably connected with the machine cover. One end of the movable base connecting rod is movably connected with the outermost cross beam of the movable end base, and the other end is movably connected with the machine cover.

13. The folding apparatus of claim 1, wherein The stand is provided with an up-down linkage mechanism, and the up-down linkage mechanism comprises a fixed support, a driving mechanism and a swing mechanism. The driving mechanism comprises a driving mechanism body and a driving mechanism movable end. The fixed support is movably connected with the driving mechanism body, and the swing mechanism is movably connected with the driving mechanism movable end. The upper end of the swing mechanism is movably connected with the bottom of the machine cover, the lower end of the swing mechanism is movably connected with the movable end base, and the fixed support is fixed on the fixed end base.

14. A folding device according to claim 13, characterized in that The driving mechanism comprises any one of an electric driving mechanism, a hydraulic driving mechanism or a pneumatic driving mechanism.

15. A folding device according to claim 14, wherein The driving mechanism is an electric driving mechanism, The driving mechanism body comprises a permanent magnet synchronous motor and a screw rod assembly driven by the permanent magnet synchronous motor. The driving mechanism movable end is a screw rod nut matched with the screw rod assembly.

16. A folding device according to claim 15, wherein The screw rod assembly comprises a screw rod fixing sleeve and a screw rod, the screw rod fixing sleeve is movably connected with the fixed support, and the permanent magnet synchronous motor drives the screw rod to rotate in a gear meshing transmission mode.

17. The folding apparatus of claim 13, wherein The upper and lower linkage mechanism comprises a rotating mechanism, which is movably connected with the fixed support, and comprises a first rotating arm and a second rotating arm, the end point of the first rotating arm is movably connected with the lower end point of the swinging mechanism, and the end point of the second rotating arm is movably connected with the moving end base.

18. A folding device according to claim 17, wherein The rotating range of the first rotating arm is from a horizontal downward 45-degree angle position to a horizontal upward 45-degree angle position.

19. The folding apparatus of claim 17, wherein The rotating range of the second rotating arm is from a vertical leftward 45-degree angle position to a vertical rightward 45-degree angle position.

20. The folding apparatus of claim 13, wherein The driving mechanism body is arranged in the fixed support.

21. The folding apparatus of claim 13, wherein The rotating range of the line formed by the rotating shaft point of the machine cover and the upper end point of the swinging mechanism is from a horizontal downward 45-degree angle position to a horizontal upward 45-degree angle position.

22. A folding mahjong machine, characterized by, The mahjong machine table top and the folding device according to any one of claims 1-21 are comprised, and the mahjong machine table top is arranged on the machine cover.

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