CN113974307B

CN113974307B - Folding table convenient to it is fixed

Info

Publication number: CN113974307B
Application number: CN202111262638.9A
Authority: CN
Inventors: 郭新华; 任国成; 郭金林; 邓国军; 任福文
Original assignee: Guangzhou Shenghe Furniture Co ltd
Current assignee: Guangzhou Shenghe Furniture Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2023-05-05
Anticipated expiration: 2041-10-28
Also published as: CN113974307A

Abstract

The invention relates to a folding table convenient to fix, which relates to the field of office equipment and comprises table legs and a table top plate, wherein the table top plate is rotatably arranged on the table legs, a limiting mechanism for limiting the rotation of the table top plate is arranged between the table legs and the table top plate, a sucker is arranged at the lower end of the table legs, a linkage mechanism is arranged on the table legs, one end of the linkage mechanism is connected with the sucker, the other end of the linkage mechanism is connected with the table top plate, the table top plate rotates to drive the linkage mechanism to move, and the linkage mechanism drives the sucker to lift and can change the vacuum degree of the sucker. This application has the effect of conveniently fixing folding table.

Description

Folding table convenient to it is fixed

Technical Field

The invention relates to the field of office equipment, in particular to a folding table convenient to fix.

Background

The table has the function of placing articles, and can also be used for the activities of eating, entertainment and the like on the table top. At present, a plurality of folding tables are disclosed in the related art, when people use the table, the table top plate of the table is turned over, and then the wheels at the bottom of the table are unlocked one by one, so that the table is pushed to a place where the table is specially placed, and the occupied space is saved; when the folding table is needed to be used, the table is pushed out, then the table is unfolded, and finally the wheels of the table are locked one by one, so that the folding table is convenient to use, especially for people with smaller room areas.

However, the wheels of the folding table are locked and fixed by installing the locking structure, and the locking structure of each wheel is separately arranged, so that when the folding table needs to be pushed or fixed, the locking or unlocking operation needs to be performed on each wheel respectively, and the operation is inconvenient.

With respect to the related art as described above, the inventors consider that there is a disadvantage in that the folding table is inconvenient to operate when pushing or fixing is required.

Disclosure of Invention

In order to solve the problem of inconvenient operation when the folding table needs to be pushed or fixed, the application provides a folding table which is convenient to fix.

The application provides a folding table convenient to it adopts following technical scheme:

the utility model provides a folding table convenient to it is fixed, includes table foot and desktop board, the desktop board rotate install in on the table foot, install the restriction between table foot and the desktop board the pivoted stop gear of desktop board, the sucking disc is installed to the lower extreme of table foot, install link gear on the table foot, link gear's one end is connected the sucking disc, link gear's the other end is connected the desktop board, the desktop board rotates and drives link gear moves, link gear drives the sucking disc goes up and down and can change the vacuum of sucking disc.

By adopting the technical scheme, in the process of turning the table top from the folded state to the use state, the linkage mechanism is driven to move, the linkage mechanism moves to drive the sucker to descend, the sucker is pressed on the floor, the linkage mechanism continues to move along with the continuous turning of the table top, so that the vacuum degree of the sucker is increased, and the sucker is firmly fixed on the floor by the external atmospheric pressure, so that the folding table is fixed; conversely, in the process of turning the table top plate from the using state to the folding state, the linkage mechanism moves to reduce the vacuum degree of the sucker, when the vacuum degree of the sucker is reduced to 0, the linkage mechanism continues to move to drive the sucker to ascend and separate from the floor, so that the unlocking of the folding table is realized, and the folding table can be pushed at the moment; the unlocking and locking of the folding table are all driven by the turnover table top plate, no additional operation is needed, and the operation is convenient and fast.

Preferably, the sucking disc comprises a disc body and a sealing element, an opening of the disc body is downward, the edge of the sealing element is connected with the inner wall of the disc body and forms sealing, the sealing element can move upwards or expand, the sealing element divides an inner cavity of the disc body into an adsorption cavity and an expansion cavity, the adsorption cavity is arranged below the sealing element, the expansion cavity is arranged above the sealing element, a connecting hole communicated with the expansion cavity is formed in the top of the disc body, the linkage mechanism is respectively connected with the disc body and the sealing element, and the linkage mechanism can drive the sealing element to change the size of the adsorption cavity.

Through adopting above-mentioned technical scheme, link gear gets into and connects the sealing member from the connecting hole, and the connecting hole can keep the atmospheric pressure of extension chamber the same with the atmospheric pressure, and link gear drives the sealing member and upwards moves or expand, can make the grow of absorption chamber, if at this moment to the opening seal of disk body, then the absorption chamber can lead to the atmospheric pressure to descend owing to the grow of volume, produces the vacuum to make the sucking disc compressed tightly on the floor by the atmospheric pressure.

Preferably, the linkage mechanism comprises a lever and a connecting piece, the middle part of the lever is hinged with the table leg through a hinge shaft, one end of the lever is arranged above the tray body and is hinged with the tray body, one end of the connecting piece is respectively connected with the sealing piece and one end of the lever away from the tray body, the other end of the connecting piece is connected with a rotary table, and the rotary table rotates along with the rotation of the table top.

By adopting the technical scheme, in the process of turning the table top from the folded state to the use state, the table top rotates to drive the turntable to rotate, the connecting piece is pulled by the rotation of the turntable, one end of the connecting piece drives the lever to move upwards, the other end of the lever drives the tray to move downwards, the opening end of the tray is pressed on the floor and forms a seal with the floor, the adsorption cavity becomes a sealed space, meanwhile, the connecting piece pulls the sealing piece to expand or move upwards, so that the adsorption cavity is enlarged, after the adsorption cavity and the floor form a seal, the connecting piece continuously applies downward pressure to the sucker through the lever along with the continuous rotation of the table top, at the moment, the table leg can be jacked up, the connecting piece also continuously pulls the sealing piece to enable the adsorption cavity to be continuously enlarged, the air pressure in the adsorption cavity is reduced to form a certain vacuum degree, and the external atmospheric pressure compresses the sucker on the floor, so that the folding table is fixed; on the contrary, in the process of turning the table top plate from the using state to the folding state, the rotating direction of the table top plate is opposite, the turntable is driven to rotate reversely, the connecting piece, the lever, the tray body and the sealing piece are loosened, the size of the adsorption cavity is restored, the vacuum degree of the adsorption cavity is reduced to 0, the tray body is separated from the floor, and the folding table can be pushed.

Preferably, the connecting piece includes the cable, the sheath of cable is fixed in the table foot, one end of cable is equipped with two branches, one of them the branch is located the top of lever and fixed connection the lever, another the branch passes the connecting hole and fixed connection the sealing member, the cable is kept away from the one end of branch encircles and fixed connection the carousel.

Through adopting above-mentioned technical scheme, the cable can be crooked, conveniently arranges to the steel wire of cable and the sheath of cable can relative slip, fix the sheath of cable on the table foot during the installation, then on being connected to sealing member, lever and carousel with the steel wire of cable, simple to operate.

Preferably, the connecting piece includes first connecting rod, second connecting rod, third connecting rod and fourth connecting rod, the upper end of first connecting rod articulate in the edge of carousel, the lower extreme of first connecting rod articulates the one end of second connecting rod, the other end of second connecting rod articulates the one end of third connecting rod, the other end of third connecting rod is connected the upper end of fourth connecting rod, the lower extreme of fourth connecting rod passes the connecting hole is connected with the sealing member, the middle part of second connecting rod and the middle part of third connecting rod articulate respectively in through the pivot in the table foot, the lever keep away from the one end of disk body articulate in the lower extreme of first connecting rod.

By adopting the technical scheme, the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod are used for transmitting power to the sealing element, the direction of the acting force received by the sealing element is the same as that received by the first connecting rod, and the direction of the acting force received by the disc body is opposite to that received by the first connecting rod, so that the function of driving the sucker to lift and changing the size of the adsorption cavity is realized; the acting force born by the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod is larger, and when the linkage mechanism is used as a main supporting stress structure, the service life of the linkage mechanism can be prolonged.

Preferably, a telescopic buffer sealing ring is arranged on the lower end face of the tray body.

By adopting the technical scheme, the buffer sealing ring can seal the adsorption cavity when the buffer sealing ring is in contact with the floor, and the buffer sealing ring keeps sealing the adsorption cavity in the continuous enlarging process of the adsorption cavity, so that the vacuum degree of the adsorption cavity is increased, and the sucker is firmly adsorbed on the floor; meanwhile, in the process that the adsorption cavity is continuously enlarged, the buffer sealing ring can be continuously compressed, so that the tray body can continuously descend, the situation that the sucker and the linkage structure are used as main supporting and stress structures of the folding table due to the fact that the table foot is lifted off the floor by the sucker can be avoided, the table foot is continuously kept as the main supporting and stress structures of the folding table, and the service lives of the sucker and the linkage mechanism are prolonged.

Preferably, a tension spring is arranged between the lever and the connecting piece, and the connecting piece is connected with the lever through the tension spring.

By adopting the technical scheme, after the sucking disc is contacted with the floor to form a seal on the floor, the floor can prevent the disc body from continuously descending, at the moment, along with the continuous pulling of the connecting piece, the tension spring is stretched, and the stretching of the connecting piece to the sealing piece can be continuously carried out, so that the sucking cavity is enlarged, the vacuum degree of the sucking cavity is increased, and the sucking disc is firmly sucked on the floor; simultaneously, in the continuous grow in-process of absorption chamber, tension spring continues to be stretched to can avoid the table foot to be pushed away from the floor by the sucking disc and lead to sucking disc and linkage structure to take place as the condition of folding table's main support atress structure, keep the table foot as folding table's main support atress structure continuously, extension sucking disc and linkage mechanism's life.

Preferably, a return spring is arranged between the lever and the table leg, and two ends of the return spring are respectively and fixedly connected with the lever and the table leg.

Through adopting above-mentioned technical scheme, reset spring can make the lever automatic re-setting to mention the sucking disc, leave the floor, avoid folding table at the removal in-process sucking disc to drop on the floor and with floor contact produce friction and cause sucking disc wearing and tearing.

Preferably, the turntable is connected with a shelf, the shelf is rotationally connected with the table legs, the turntable is fixed at one end of the shelf, the shelf is connected with the table top plate through a pull-connecting piece, and two ends of the pull-connecting piece are respectively connected with the shelf and the table top plate.

Through adopting above-mentioned technical scheme, the thing frame is used for placing article, and the desktop board rotates and takes animal frame rotation through the pulling and connect piece, and the pulling and connect piece is folding when the desktop board is folding, and the pulling and connect piece is folding when the desktop board is expanding, reduces the occupation space when the thing frame is folding, and the thing frame also rotates the service condition when the desktop board rotates the service condition simultaneously, and the state of thing frame is synchronous with the state of desktop board, convenient operation.

Preferably, the stop gear includes bayonet lock, connecting axle, elastic component, gag lever post and handle, the bayonet lock is fixed in on the desktop board, the connecting axle rotates to be connected the table foot, the gag lever post is fixed in on the connecting axle, be equipped with the draw-in groove on the gag lever post, the bayonet lock can block into in the draw-in groove, the both ends of elastic component are fixed connection respectively gag lever post and table foot, handle fixed connection the connecting axle.

By adopting the technical scheme, when the tabletop rotates from the folded state to the use state, the clamping pin is close to the limiting rod along with the tabletop rotation, when the clamping pin contacts with the limiting rod, the limiting rod is pushed to rotate with the connecting shaft, and finally the clamping pin reaches the opening of the clamping groove along with the overturning of the tabletop, the limiting rod is reset under the elastic action of the elastic piece, and the clamping pin is clamped into the clamping groove to fix the clamping pin, so that the tabletop stops rotating; when the tabletop plate is required to be folded, the handle is pulled, so that the connecting shaft drives the limiting rod to rotate, the clamping pin is separated from the clamping groove, the locking of the tabletop plate is released, and the tabletop plate can be folded by turning the tabletop plate.

In summary, the present application includes at least one of the following beneficial technical effects:

1. in the process of turning the table top plate from the folded state to the use state, the linkage mechanism is driven to move, the linkage mechanism moves to drive the sucker to descend, the sucker is pressed on the floor, the linkage mechanism continues to move along with the continuous turning of the table top plate, so that the vacuum degree of the sucker is increased, and the sucker is firmly fixed on the floor by the external atmospheric pressure, so that the folding table is fixed; conversely, in the process of turning the table top plate from the using state to the folding state, the linkage mechanism drives the sucker to ascend and separate from the floor so as to unlock the folding table, and the folding table can be pushed at the moment; the unlocking and locking of the folding table are driven by the turnover table top plate, no additional operation is needed, and the operation is convenient and quick;

2. the linkage mechanism comprises a lever and a connecting piece, the connecting piece is connected with one ends of the sealing piece and the lever, the other end of the lever is connected with the disc body, the power for overturning the table top is transmitted to the lever and the sealing piece through the connecting piece, the power is transmitted to the disc body through the lever, and the movement directions of the disc body and the sealing piece are opposite due to the action of the lever, so that the vacuum degree of the adsorption cavity is increased or reduced, and the functions of driving the sucker to lift and changing the vacuum degree of the sucker are realized;

3. the buffer sealing ring that can stretch out and draw back is installed to the lower terminal surface of disk body, and buffer sealing ring seals the absorption chamber when contacting the floor, and in absorption chamber continues the grow in-process, buffer sealing ring can continue to be compressed for the disk body can continue to descend, thereby can avoid the table foot to be pushed away the floor by the sucking disc and lead to sucking disc and linkage structure to take place as the condition of folding table's main support atress structure, continuously keep the table foot as folding table's main support atress structure, extension sucking disc and linkage mechanism's life.

Drawings

Figure 1 is a front view of a folding table for facilitating securing in accordance with embodiments 1-6 of the present application.

Fig. 2 is a sectional view A-A in fig. 1.

Figure 3 is a schematic view showing a use state of a folding table for facilitating fixing according to embodiments 1 to 6 of the present application.

Figure 4 is a schematic view showing a folding table in a folded state for facilitating fixing in embodiments 1-6 of the present application.

Fig. 5 is a schematic structural view of a limiting mechanism in embodiments 1-6 of the present application.

Fig. 6 is an enlarged view at B of example 1 of the present application.

Fig. 7 is an enlarged partial sectional view of the suction cup of embodiment 2 of the present application.

Fig. 8 is a schematic structural view of the linkage mechanism and the suction cup of embodiment 3 of the present application.

Fig. 9 is an enlarged partial sectional view of the suction cup of embodiment 4 of the present application.

Fig. 10 is an enlarged partial sectional view of the suction cup of embodiment 5 of the present application.

Fig. 11 is an enlarged partial sectional view of the suction cup of example 6 of the present application.

Reference numerals illustrate: 1. a table top; 2. a table leg; 3. a limiting mechanism; 31. a bayonet lock; 32. a limit rod; 33. a connecting shaft; 34. an elastic member; 35. a handle; 4. a rack; 5. a linkage mechanism; 51. a turntable; 52. a guy cable; 53. a lever; 54. a first link; 55. a second link; 56. a third link; 57. a fourth link; 58. a tension spring; 6. a suction cup; 61. a tray body; 62. a rubber sheet; 63. a piston; 64. a piston rod; 65. a guide sleeve; 66. and (5) buffering the sealing ring.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-11.

The embodiment of the application discloses a folding table convenient to fix.

Example 1

Referring to fig. 1 and 2, a folding table convenient to fix includes a table leg 2 and a table top board 1, the table top board 1 is rotatably mounted on the table leg 2, a limit mechanism 3 for limiting the rotation of the table top board 1 is mounted between the table leg 2 and the table top board 1, the table top board 1 is in a folded state when rotated vertically, the table top board 1 is in a use state when rotated horizontally, the table top board 1 is connected with the limit mechanism 3 when rotated horizontally, and the limit mechanism 3 fixes the table top board 1 in a horizontal state. The sucking disc 6 is installed to the lower extreme of table foot 2, and the opening of sucking disc 6 is down, installs link gear 5 on the table foot 2, and sucking disc 6 is connected to link gear 5's one end, and table top 1 is connected to link gear 5's the other end. In the process that the table top 1 is turned from the folded state to the using state, the table top 1 rotates to drive the linkage mechanism 5 to move, the linkage mechanism 5 moves to drive the sucker 6 to descend, the sucker 6 is tightly pressed on the floor, the linkage mechanism 5 continues to move along with the continuous turning of the table top 1 so that the vacuum degree of the sucker 6 is increased, and the sucker 6 is firmly fixed on the floor by the external atmospheric pressure to realize the fixation of the folding table; conversely, in the process that the table top 1 is turned over from the using state to the folding state, the linkage mechanism 5 moves to enable the vacuum degree of the sucker 6 to be reduced, and when the vacuum degree of the sucker 6 is reduced to 0, the linkage mechanism 5 continues to move to drive the sucker 6 to ascend and separate from the floor, so that unlocking of the folding table is realized.

Referring to fig. 2, 3 and 4, the table leg 2 comprises two supporting legs, the linkage mechanism 5 is provided with two sets, the two sets of linkage mechanisms 5 are respectively installed on the two supporting legs, the two supporting legs are fixedly connected through a baffle, the baffle is vertically arranged, two ends of the baffle are respectively fixedly connected with the middle parts of the two supporting legs, and the two supporting legs are mutually symmetrical. The stabilizer blade includes vertical support bar and horizontal support bar, and the lower extreme of vertical support bar is fixed in the middle part of horizontal support bar, and vertical support bar and horizontal support bar mutually perpendicular, and vertical support bar inside cavity and both ends opening are equipped with the elongated slot along the length direction of horizontal support bar in the horizontal support bar, and the opening of elongated slot is towards ground, and the both ends of elongated slot are sealed, are equipped with many horizontal crossbeams in the elongated slot, and many crossbeams are laid along the length direction interval of elongated slot, and the both ends of crossbeam are fixed in the both sides of elongated slot respectively, and the cavity intercommunication in elongated slot and the vertical support bar. Universal wheels are respectively arranged at two ends of the long groove, the universal wheels protrude out of the opening of the long groove, and the two universal wheels are symmetrically arranged relative to the vertical supporting rod. Two suckers 6 are respectively arranged at two ends of each long groove, the two suckers 6 are symmetrically arranged relative to the vertical supporting rod, the two suckers 6 are arranged between the two universal wheels, when the table top board 1 is in a vertical state, the suckers 6 are all contracted in the long grooves, and when the table top board 1 is in a horizontal state, the lower parts of the suckers 6 extend out of the openings of the long grooves and are pressed on the floor.

Referring to fig. 5, the limiting mechanism 3 includes a locking pin 31, a connecting shaft 33, an elastic member 34, a limiting rod 32 and a handle 35, wherein the connecting shaft 33 is horizontally arranged, two ends of the connecting shaft 33 are respectively and rotatably connected with the upper ends of two vertical supporting rods, the limiting rod 32 is vertically fixed on the connecting shaft 33, the limiting rod 32 is provided with a locking groove, the locking groove faces one side of the table top 1 in a vertical state, the locking pin 31 is horizontally fixed on the lower part of the table top 1, and the locking pin 31 is locked in the locking groove when the table top 1 rotates to a horizontal state. The elastic piece 34 is a torsion spring, the elastic piece 34 is sleeved on the connecting shaft 33, two ends of the elastic piece 34 are respectively fixedly connected with the limiting rod 32 and the table leg 2, the handle 35 is fixedly connected with the connecting shaft 33, and the connecting shaft 33 is driven to rotate through the handle 35. The upper end surface of the limit rod 32 is an inclined surface, and one end of the inclined surface positioned at one side of the clamping groove is a low end. In the process that the table top 1 rotates to the horizontal state from the vertical state, the clamping pin 31 is firstly contacted with the upper end face of the limiting rod 32, then the limiting rod 32 is pushed to rotate, the elastic piece 34 generates elastic force, along with the continuous rotation of the table top 1, the clamping pin 31 moves along one side of the limiting rod 32, when the clamping pin 31 moves to the clamping groove, the thrust of the clamping pin 31 to the limiting rod 32 disappears, the limiting rod 32 returns to the original position under the elastic force of the elastic piece 34, the clamping pin 31 enters into the clamping groove, the table top 1 is locked, and the table top 1 is fixed and the horizontal state of the table top 1 is kept. When the table top 1 needs to be folded, one hand pulls and keeps the table top 1 from falling, the other hand rotates the connecting shaft 33 through the handle 35, so that the clamping groove is separated from the clamping pin 31, the table top 1 is unlocked, and then the table top 1 is rotated to enable the table top 1 to rotate from a horizontal state to a vertical state, and the folding of the table top 1 is completed.

Referring to fig. 6, the suction cup 6 includes a cup body 61 and a sealing member, the sealing member is installed in the cup body 61, the cup body 61 is cylindrical, a lower end of the cup body 61 is opened, that is, an opening of the suction cup 6, and a connection hole is provided at a top of the cup body 61 for the link mechanism 5 to pass through. The sealing member is elastic rubber piece 62, the sealing member is circular, the diameter of sealing member equals with the internal diameter of disk body 61, the sealing member level sets up, the edge of sealing member and the inner wall fixed connection of disk body 61 form sealedly, the inner chamber of sealing member with disk body 61 is separated into absorption chamber and extension chamber, the absorption chamber is located the below of sealing member and is communicated with the opening of sucking disc 6, the top of sealing member is located to the extension chamber, extension chamber and connecting hole intercommunication, the connecting hole keeps the atmospheric pressure of extension chamber the same with external atmospheric pressure, the absorption chamber is used for making sucking disc 6 produce vacuum degree absorption floor, the extension chamber provides the space of sealing member expansion. The linkage mechanism 5 is respectively connected with the disc body 61 and the sealing element, the disc body 61 can move downwards under the drive of the linkage mechanism 5, and the sealing element can expand upwards under the pulling of the linkage mechanism 5, so that the size of the adsorption cavity is changed, and the sealing element can automatically recover under the action of self elasticity. Sealing the opening of the sucker 6, and then pulling the sealing element upwards to enlarge the volume of the suction cavity, thereby increasing the vacuum degree of the suction cavity and ensuring that the sucker 6 is firmly fixed on the floor; the pulling force disappears, and after the sealing element is restored, the vacuum degree of the adsorption cavity is reduced to 0, and the sucker 6 is separated from the floor.

Referring to fig. 2 and 6, the linkage mechanism 5 includes a lever 53 and a connecting member, the lever 53 is mounted in the long groove, the middle of the lever 53 is hinged to the table leg 2 through a hinge shaft, two ends of the hinge shaft are respectively connected to two side walls of the long groove, a return spring is sleeved outside the hinge shaft, the return spring is a torsion spring, two ends of the return spring are respectively fixedly connected with the lever 53 and the side wall of the long groove, one end of the lever 53 is arranged above the tray 61 and hinged to the tray 61, the other end of the lever 53 is connected with the connecting member, and after the acting force applied to the lever 53 by the connecting member disappears, the lever 53 drives the tray 61 to automatically return under the acting force of the return spring. The connecting piece includes cable 52, and cable 52 can crooked, conveniently arranges, and cable 52 includes sheath and steel wire, and the sheath cover is established outside the steel wire, and the steel wire can slide along the sheath, and the steel wire can rotate in the sheath. The guy cable 52 is arranged along the inner cavity of the vertical support rod and the long groove of the horizontal support rod, the sheath of the guy cable 52 is fixed on the inner wall of the vertical support rod and the cross beam of the horizontal support rod, and the guy cable 52 arranged in the long groove is arranged above the cross beam. The long groove is internally provided with a plurality of pulleys used for turning the steel wire, the pulleys are distributed at the positions where the steel wire needs to be turned, the pulleys are rotationally connected with the side wall of the long groove, one end of the steel wire is provided with two branches, one branch spans over the pulley above the lever 53 and then is fixedly connected with one end of the lever 53 far away from the sucker 6, the other branch spans over the pulley above the sucker 6 and then passes through the connecting hole and is fixedly connected with the middle part of the sealing piece, one end of the steel wire far away from the branches surrounds and is fixedly connected with the turntable 51, the turntable 51 is a winding roll, the turntable 51 rotates along with the rotation of the table top 1, and the steel wire rolls up or stretches along with the rotation of the turntable 51, so that the sucker 6 is driven. The connecting piece transmits the rotation power of the table top 1 to the lever 53 and the sealing piece, the lever 53 changes the direction of the power transmitted to the tray body 61 by the connecting piece, so that the stress direction of the tray body 61 is opposite to the stress direction of the sealing piece, and the movement direction of the tray body 61 is opposite to the movement direction of the sealing piece, thereby realizing the functions of driving the sucking disc 6 to lift and changing the vacuum degree of the sucking cavity.

Referring to fig. 2 and 3, a turntable 51 is provided in an inner cavity of the vertical support bar, and the turntable 51 is connected with the object holder 4. The object rack 4 comprises a flat plate, a steel pipe and two groups of pull-connecting pieces, the flat plate is fixed on the steel pipe, two ends of the steel pipe are respectively connected with two vertical support rods in a rotating mode, the end heads of the steel pipe extend into the vertical support rods, and the rotary table 51 is fixed at one end of the steel pipe. The two groups of pull-connecting pieces are respectively arranged at the two ends of the flat plate, each pull-connecting piece comprises a steel bar and a spring, one end of the steel bar is hinged to one side, far away from the steel pipe, of the flat plate, the other end of the steel bar is rotationally connected with one end of the spring, and the other end of the spring is rotationally connected with the lower surface of the table top plate 1. The table top plate 1 drives the flat plate to rotate through the springs and the steel bars, so that the use state of the flat plate is kept synchronous with the use state of the table top plate 1, the operation is convenient, the power transmission is smoother through the springs, and the rotation of the table top plate 1 is prevented from being blocked by the pull-connection piece.

The implementation principle of the embodiment 1 is as follows: in the process of turning the table top 1 from the folded state to the use state, the table top 1 rotates to drive the animal frame 4 to rotate, the rotation of the animal frame 4 drives the turntable 51 to rotate, and the rotation of the turntable 51 rolls up the steel wires of the inhaul cables 52, so that the steel wires of the inhaul cables 52 generate tensile force. One branch of the steel wire of the inhaul cable 52 drives one end of the lever 53 to move upwards, the other end of the lever 53 drives the disc body 61 to move downwards, the opening end of the disc body 61 is pressed on the floor and forms a seal with the floor, the adsorption cavity becomes a closed space at the moment, and meanwhile, the other branch of the steel wire of the inhaul cable 52 pulls the rubber sheet 62 to expand upwards, so that the adsorption cavity is enlarged. After the adsorption cavity and the floor are sealed, one branch of the steel wire of the inhaul cable 52 continuously applies downward pressure to the disc body 61 through the lever 53 along with the continuous rotation of the desktop plate 1, at the moment, the desk legs 2 can be jacked up to enable the steel wire of the inhaul cable 52 to be continuously pulled, the universal wheels leave the floor, the steel wire of the inhaul cable 52 also continuously pulls the sealing piece to enable the adsorption cavity to be continuously enlarged, the air pressure in the adsorption cavity is reduced, the vacuum degree in the adsorption cavity is increased, and the sucker 6 is pressed on the floor by the external atmospheric pressure, so that the folding desk is fixed and locked. Conversely, in the process of turning the table top 1 from the use state to the folding state, the rotation direction of the table top 1 is opposite, the turntable 51 is driven to rotate reversely, the steel wire of the connecting cable 52 is loosened, the rubber sheet 62 returns to the original position under the action of the self elastic force, the size of the adsorption cavity is restored, the vacuum degree of the adsorption cavity is reduced to 0, the tray body 61 is separated from the floor, the folding table is unlocked, and the folding table can be pushed. The unlocking and locking of the folding table are driven by the turnover table top plate 1, no additional operation is needed, and the operation is convenient and quick.

Example 2

Referring to fig. 7, the present embodiment is different from embodiment 1 in that the sealing member is changed from a rubber sheet 62 to a piston 63, the piston 63 slides the inner wall of the coupling disc body 61 and forms a seal with the inner wall of the disc body 61, the upper end of the piston 63 is provided with a piston 63 rod, a guide cylinder is slidably sleeved outside the piston 63 rod, the coupling disc body 61 is fixed by the guide cylinder through a fixing rod, and the guide cylinder can keep the movement of the piston 63 in a vertical state, thereby preventing the piston 63 from being blocked. The stay cable 52 is fixedly connected with the upper end of the piston 63 rod, one end of the stay cable 52 connected with the piston 63 rod is vertically arranged and coaxial with the piston 63 rod, and the stay cable 52 pulls the piston 63 to enable the piston 63 to vertically move upwards, so that the volume of the adsorption cavity is enlarged; after the pulling force of the pulling cable 52 is removed, the piston 63 automatically returns to its original position under the action of air pressure.

The implementation principle of the embodiment 2 is as follows: the pull rope 52 pulls the piston 63 to move upwards to enlarge the volume of the adsorption cavity, and after the adsorption cavity is sealed, the upward movement of the piston 63 can improve the vacuum degree of the adsorption cavity, so that the sucker 6 is pressed on the floor. In addition, the service life of the piston 63 is longer than that of the rubber sheet 62, and replacement of the piston 63 is more convenient than that of the rubber sheet 62.

Example 3

Referring to fig. 8, the present embodiment is different from embodiment 1 in that the stay cable 52 is replaced with a multi-link composed of a first link 54, a second link 55, a third link 56 and a fourth link 57, the first link 54 is movably installed in the vertical support bar, the second link 55, the third link 56 and the fourth link 57 are installed in the long groove, the upper end of the first link 54 is hinged to the edge of the turntable 51, the lower end of the first link 54 is hinged to one end of the second link 55, the other end of the second link 55 is hinged to one end of the third link 56, the upper end of the fourth link 57 is fixed with a sliding sleeve, the sliding sleeve is slidably installed at one end of the third link 56 far from the second link 55, and the lower end of the fourth link 57 passes through the connection hole and is connected with the sealing member. The middle part of the second connecting rod 55 and the middle part of the third connecting rod 56 are respectively hinged to the table leg 2 through rotating shafts, and one end of the lever 53, which is far away from the tray 61, is hinged to the lower end of the first connecting rod 54.

The implementation principle of the embodiment 3 is as follows: the first connecting rod 54, the second connecting rod 55, the third connecting rod 56 and the fourth connecting rod 57 transmit power to the sealing element, the direction of the force applied to the sealing element is the same as the direction of the force applied to the first connecting rod 54, and the direction of the force applied to the disc body 61 is opposite to the direction of the force applied to the first connecting rod 54, so that the function of driving the sucking disc 6 to lift and change the size of the sucking cavity is realized; the forces that can be received by the first link 54, the second link 55, the third link 56, and the fourth link 57 are large, and when the link mechanism 5 is a main support force structure, the service life of the link mechanism 5 can be prolonged.

Example 4

Referring to fig. 9, this embodiment is different from embodiment 1 in that a buffer seal ring 66 which can be extended and contracted is installed at the lower end surface of the disc body 61, the buffer seal ring 66 is made of rubber, the buffer seal ring 66 has elasticity, can be compressed and automatically restored after the pressure is lost, and the buffer seal ring 66 is favorable for sealing between the opening of the suction cup 6 and the floor.

The implementation principle of the embodiment 4 is as follows: after the buffer seal ring 66 contacts the floor, along with the continuous rotation of the table top 1, the buffer seal ring 66 can be continuously compressed, so that the tray body 61 can continuously descend, the table leg 2 is prevented from being propped away from the floor by the sucker 6, the table leg 2 is continuously kept as a main supporting and stress structure of the folding table, the sucker 6 and the linkage mechanism 5 only bear a small part of supporting force, and the service lives of the sucker 6 and the linkage mechanism 5 are prolonged.

Example 5

Referring to fig. 10, the present embodiment is different from embodiment 1 in that a tension spring 58 is provided between the lever 53 and the connection member, the wire of the cable 52 is connected to the lever 53 through the tension spring 58, and both ends of the tension spring 58 are fixedly connected to one end of the wire of the cable 52 and one end of the lever 53, respectively.

The implementation principle of the embodiment 5 is as follows: after the sucking disc 6 contacts with the floor to form a seal with the floor, the floor can prevent the disc 61 from continuing to descend, and at the moment, as the inhaul cable 52 continues to be pulled, the tension spring 58 continues to be stretched, so that the rubber sheet 62 can continue to be stretched, the sucking cavity is enlarged, the vacuum degree of the sucking cavity is increased, and the sucking disc 6 can firmly suck the floor. Meanwhile, the table legs 2 can be prevented from being propped away from the floor by the suckers 6, the table legs 2 can be continuously kept to serve as a main supporting and stress structure of the folding table, the suckers 6 and the linkage mechanism 5 only bear small supporting forces, and the service lives of the suckers 6 and the linkage mechanism 5 are prolonged.

Example 6

Referring to fig. 11, this embodiment is different from embodiment 1 in that a buffer seal ring 66 which can be extended and contracted is installed at the lower end surface of the disc body 61, the buffer seal ring 66 is made of rubber, the buffer seal ring 66 has elasticity, can be compressed and automatically restored after the pressure is lost, and the buffer seal ring 66 is beneficial to sealing between the opening of the suction cup 6 and the floor. A tension spring 58 is arranged between the lever 53 and the connecting piece, the steel wire of the inhaul cable 52 is connected with the lever 53 through the tension spring 58, and two ends of the tension spring 58 are respectively fixedly connected with one end of the steel wire of the inhaul cable 52 and one end of the lever 53.

The implementation principle of the embodiment 6 is as follows: after the buffer seal ring 66 contacts the floor, along with the continuing rotation of the table top 1, the buffer seal ring 66 can be continuously compressed, so that the tray body 61 can continuously descend, and meanwhile, the tension spring 58 is stretched, so that the steel wire of the inhaul cable 52 can continuously pull the rubber sheet 62, thereby avoiding the table leg 2 from being propped away from the floor by the sucker 6, continuously keeping the table leg 2 as a main supporting and stress structure of the folding table, only bearing a small part of supporting force by the sucker 6 and the linkage mechanism 5, and prolonging the service lives of the sucker 6 and the linkage mechanism 5.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A folding table convenient to it is fixed, its characterized in that: the novel table comprises table legs (2) and a table top plate (1), wherein the table top plate (1) is rotatably arranged on the table legs (2), a limiting mechanism (3) for limiting the rotation of the table top plate (1) is arranged between the table legs (2) and the table top plate (1), a sucker (6) is arranged at the lower end of each table leg (2), a linkage mechanism (5) is arranged on each table leg (2), one end of each linkage mechanism (5) is connected with the sucker (6), the other end of each linkage mechanism (5) is connected with the table top plate (1), the table top plate (1) rotates to drive the corresponding linkage mechanism (5) to move, and the corresponding linkage mechanism (5) drives the sucker (6) to lift and can change the vacuum degree of the sucker (6);

the sucker (6) comprises a tray body (61) and a sealing element, an opening of the tray body (61) faces downwards, the edge of the sealing element is connected with the inner wall of the tray body (61) and forms a seal, the sealing element can move upwards or expand, the sealing element divides an inner cavity of the tray body (61) into an adsorption cavity and an expansion cavity, the adsorption cavity is arranged below the sealing element, the expansion cavity is arranged above the sealing element, a connecting hole communicated with the expansion cavity is formed in the top of the tray body (61), the linkage mechanism (5) is respectively connected with the tray body (61) and the sealing element, and the linkage mechanism (5) can drive the sealing element to change the size of the adsorption cavity;

the linkage mechanism (5) comprises a lever (53) and a connecting piece, the middle part of the lever (53) is hinged to the table leg (2) through a hinge shaft, one end of the lever (53) is arranged above the tray body (61) and hinged to the tray body (61), one end of the connecting piece is respectively connected with the sealing piece and one end of the lever (53) away from the tray body (61), the other end of the connecting piece is connected with a rotary table (51), and the rotary table (51) rotates along with the rotation of the table top (1).

2. A folding table for facilitating securing as defined in claim 1, wherein: the connecting piece comprises a pull rope (52), a sheath of the pull rope (52) is fixed on the table leg (2), one end of the pull rope (52) is provided with two branches, one branch is arranged above the lever (53) and fixedly connected with the lever (53), the other branch penetrates through the connecting hole and is fixedly connected with the sealing piece, and one end, far away from the branch, of the pull rope (52) is surrounded and fixedly connected with the rotary table (51).

3. A folding table for facilitating securing as defined in claim 1, wherein: the connecting piece comprises a first connecting rod (54), a second connecting rod (55), a third connecting rod (56) and a fourth connecting rod (57), wherein the upper end of the first connecting rod (54) is hinged to the edge of the rotary table (51), the lower end of the first connecting rod (54) is hinged to one end of the second connecting rod (55), the other end of the second connecting rod (55) is hinged to one end of the third connecting rod (56), the other end of the third connecting rod (56) is connected with the upper end of the fourth connecting rod (57), the lower end of the fourth connecting rod (57) penetrates through the connecting hole and is connected with the sealing piece, the middle part of the second connecting rod (55) and the middle part of the third connecting rod (56) are hinged to the table leg (2) through rotating shafts respectively, and one end of the lever (53) away from the disc body (61) is hinged to the lower end of the first connecting rod (54).

4. A folding table for facilitating securing as defined in claim 1, wherein: a buffer sealing ring (66) capable of stretching and retracting is arranged on the lower end face of the disc body (61).

5. A folding table for facilitating securing as defined in claim 1, wherein: a tension spring (58) is arranged between the lever (53) and the connecting piece, and the connecting piece is connected with the lever (53) through the tension spring (58).

6. A folding table for facilitating securing as defined in claim 1, wherein: a return spring is arranged between the lever (53) and the table leg (2), and two ends of the return spring are respectively and fixedly connected with the lever (53) and the table leg (2).

7. A folding table for facilitating securing as defined in claim 1, wherein: the rotary table is characterized in that the rotary table (51) is connected with a material frame (4), the material frame (4) is rotationally connected with the table legs (2), the rotary table (51) is fixed at one end of the material frame (4), the material frame (4) is connected with the table top (1) through a pull-connecting piece, and two ends of the pull-connecting piece are respectively connected with the material frame (4) and the table top (1).

8. A folding table for facilitating securing as defined in claim 1, wherein: stop gear (3) are including bayonet lock (31), connecting axle (33), elastic component (34), gag lever post (32) and handle (35), bayonet lock (31) are fixed in on desktop board (1), connecting axle (33) rotate and connect table foot (2), gag lever post (32) are fixed in on connecting axle (33), be equipped with the draw-in groove on gag lever post (32), bayonet lock (31) can block into in the draw-in groove, the both ends of elastic component (34) fixed connection respectively gag lever post (32) and table foot (2), handle (35) fixed connection connecting axle (33).