CN111109852A

CN111109852A - Frameless elevator and mounting structure thereof

Info

Publication number: CN111109852A
Application number: CN202010019845.0A
Authority: CN
Inventors: 魏豪
Original assignee: Hangzhou Desk Media Science & Technology Co ltd
Current assignee: Hangzhou Desk Media Science & Technology Co ltd
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2020-05-08
Also published as: WO2021138942A1

Abstract

The invention relates to the technical field of display screen lifting equipment, and particularly discloses a frameless lifter and a mounting structure thereof, wherein the frameless lifter comprises a shell, an opening is formed in the upper end surface of the shell, a cover plate is movably arranged at the opening, and a lifting frame capable of lifting is further arranged in the shell The opening of the table top is small, and the frameless mounting effect can be achieved.

Description

Frameless elevator and mounting structure thereof

Technical Field

The invention relates to the technical field of display screen lifting equipment, in particular to a frameless elevator and an installation structure thereof.

Background

In the prior art, a display screen is often arranged in places such as meeting rooms and training rooms, and in order to prevent the display screen from falling dust or occupying the space of a table top when the display screen is idle for a long time, the display screen is often arranged in a lifter capable of lifting the display screen up and down on the table top. The patent (patent application number: CN201711414438.4) discloses an ultrathin elevator and an integrated speaking independent elevator, which comprise a chassis, the width of the chassis is D1, the size range of D1 is 40 mm-47 mm, and the elevator has the following defects: 1) although the lifter can realize that the display screen ascends or descends to the turning plate to enable the turning plate to open or close the window in a matched manner, the turning plate adopts a connecting rod type rigid drive, and has a complex structure and unsmooth operation; 2) the installation mode of the lifter is as follows: offer the window that supplies the display screen to stretch out on the quick-witted case up end of lift, the mesa is seted up simultaneously with quick-witted case up end size assorted through-hole, stretch into the through-hole with the whole up end of lift again and make it flush with mesa place horizontal plane in and fix the lift through the screw from the below, consequently, the trompil department of mesa can have the frame usually (the up end removes other walls of window promptly), the trompil area is still great, influences the use and the pleasing to the eye degree of mesa.

Disclosure of Invention

The invention aims to provide a frameless elevator and an installation structure thereof aiming at the prior technical situation, and the elevator has simple structure and small opening on a table top and can achieve the frameless installation effect.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention discloses a frameless elevator, which comprises a shell, wherein the upper end surface of the shell is provided with an opening, a cover plate is movably arranged at the opening, a lifting frame capable of lifting is also arranged in the shell, and a linkage mechanism for driving the cover plate to synchronously open and close along with the lifting frame is arranged between the lifting frame and the cover plate, in the invention, the linkage mechanism can drive the cover plate to synchronously translate obliquely downwards along with the lifting frame, keep away from the opening, open the opening, and also can drive the cover plate to synchronously translate obliquely upwards along with the descending of the lifting frame, seal the opening and close the opening, the linkage mechanism comprises an oblique slide rail arranged along the oblique direction and a sliding block arranged on the oblique slide rail in a sliding way, the oblique slide rail is arranged at two inner sides of the shell, and the sliding block is connected with a buffer power spring for providing downward sliding pulling force and a pulling rope for providing upward sliding pulling, the traction rope is sleeved with a limiting block, the lifting frame is provided with a synchronous pressing plate used for pressing the limiting block downwards so that the traction rope can synchronously slide up and down along with the lifting frame, a steering piece is arranged beside the inclined slide rail, and the traction rope is connected with the slide block after being steered by the steering piece.

Preferably, the casing below be equipped with fixed otic placode, the steering part below be equipped with spacing otic placode, all wear to be equipped with on spacing otic placode and the synchronous clamp plate and be used for carrying out spacing guiding to the tractive rope spacing guiding hole, the one end of tractive rope is connected with fixed otic placode, the other end passes the spacing guiding hole on synchronous clamp plate and the spacing otic placode in proper order to be connected with the upper end of sliding block after steering through the steering part, the stopper is located between fixed otic placode and the synchronous clamp plate and ensures that the stopper on synchronous clamp plate and the tractive rope sets up along same vertical direction all the time.

Preferably, the auxiliary spring is arranged above the fixed ear plate, the auxiliary spring is sleeved outside the traction rope, and when the lifting frame ascends, the auxiliary spring extends to provide assistance for the buffering assistance spring.

Preferably, the slope slide rail side wear to be equipped with the spout, the sliding block includes along the gliding sliding end of slope slide rail and the link that is used for connecting the apron, be equipped with between sliding end and the link and run through the spout changeover portion, be equipped with the apron support arm that sets up along the vertical direction between link and the apron.

Preferably, the axis of the buffering power-assisted spring is parallel to the inclined slide rail, a fixed block for fixing the buffering power-assisted spring is arranged beside the inclined slide rail, and two ends of the buffering power-assisted spring are respectively connected with the fixed block and the slide block.

Preferably, the lifting frame is rotatably connected with a display screen, an angle adjusting mechanism for adjusting the inclination angle of the display screen is arranged between the lifting frame and the display screen, angle adjustment mechanism includes the mount, the screen pivot and be used for driving screen pivot pivoted drive shaft, screen pivot and drive shaft are rotatable to be located on the mount, the cover is equipped with driven tight pulley and initiative tight pulley on screen pivot and the drive shaft respectively, be connected with first connecting rod and the second connecting rod that is parallel to each other between driven tight pulley and the initiative tight pulley, the both ends of first connecting rod and second connecting rod articulate respectively on driven tight pulley and initiative tight pulley, the drive shaft is connected with and is used for driving drive shaft pivoted drive assembly, the drive shaft rotates under drive assembly's drive, the screen pivot rotates thereupon, the display screen uses the screen pivot to rotate as the axle center, the realization is to the regulation of the inclination of display screen.

Preferably, the drive assembly includes first reduction gear and the second reduction gear that is connected with driving motor respectively, and first reduction gear and second reduction gear are biax turbine worm reduction gear, are connected through elastic coupling between first reduction gear and the second reduction gear, and elastic coupling can eliminate both ends reduction gear clearance, improves and rotates precision and smooth degree, and the output shaft that first reduction gear and second reduction gear kept away from each other is connected with rigid coupling respectively, passes through damping axle interconnect between drive shaft and the rigid coupling.

Preferably, the angle adjusting mechanism is further provided with a detection assembly for detecting the current inclination state of the display screen, the detection assembly comprises a first photoelectric sensor and a second photoelectric sensor, the first photoelectric sensor and the second photoelectric sensor are respectively provided with a first shielding plate and a second shielding plate for shielding optical signals of the first photoelectric sensor and the second photoelectric sensor, the first shielding plate and the second shielding plate are annular plates with gaps and are arranged concentrically with the driving shaft, and the gaps of the first shielding plate and the second shielding plate are not completely overlapped; the inclination state comprises a forward inclination state, a backward inclination state and a vertical state, when the display screen is in the vertical state, the optical signals of the first photoelectric sensor and the second photoelectric sensor are simultaneously shielded, when the display screen is in the forward inclination state, only the optical signal of the first photoelectric sensor is shielded, when the display screen is in the backward inclination state, only the optical signal of the second photoelectric sensor is shielded, through the detection assembly, whether the display screen is in the vertical state before being stored can be judged, and the display screen is convenient to reset according to the judgment result.

Preferably, the crane is connected with elevating system, and elevating system includes elevator motor and belt pulley conveying subassembly, and belt pulley conveying subassembly includes drive wheel, synchronizing wheel and the conveyer belt of cover between drive wheel and the synchronizing wheel, and on elevator motor's output shaft was located to the drive wheel cover, the conveyer belt was connected with the crane through the conveyer belt briquetting.

The invention also provides a mounting structure of the frameless elevator, which is characterized by comprising a table top arranged above the elevator, wherein the upper end face comprises a mounting ring face arranged at the edge of the upper end face, the inner side of the mounting ring face extends upwards and is bent to form a convex wall for mounting, positioning and moving a cover plate, the inner part of the convex wall is hollow, an opening is arranged on the upper surface of the convex wall, the bottom of the table top is provided with a groove for accommodating the convex wall, the bottom of the groove is provided with a notch matched with the opening in a penetrating manner, the opening of the table top is small, and the elevator is mounted without a frame.

The invention has the beneficial effects that:

1) the linkage mechanism realizes linkage motion of the cover plate and the lifting frame through the traction rope, the limiting block and the synchronous pressing plate, has a simple structure, is driven by the flexible drive of the traction rope, the buffer power spring and the like, and has smooth operation.

2) The driving shaft and the screen rotating shaft are connected through the parallelogram transmission structure, the display screen is driven to rotate by the rotation of the driving shaft by taking the screen rotating shaft as an axis, and the inclination angle of the display screen can be adjusted.

3) According to the invention, through the detection assembly, whether the display screen is in a vertical state before being stored can be judged, and the display screen is reset to the vertical state through the judgment result, so that the angle is not required to be adjusted manually, and meanwhile, the display screen is effectively prevented from colliding with the notch and the opening in the storage process, so that the storage of the display screen is more convenient and smooth, and the safety degree is higher.

4) According to the invention, only the notch matched with the opening in specification and size is formed in the table top, and the improvement of the upper end surface of the elevator and the bottom of the table top is combined, so that the mounting effects of small opening of the table top and no frame in elevator mounting are effectively realized, the effective utilization of the space of the table top is facilitated, and the table top is neat and beautiful.

Drawings

FIG. 1 is a schematic structural view of a linkage assembly of the present invention,

FIG. 2 is another schematic structural diagram of the present invention.

Fig. 3 is a partially enlarged view of fig. 2.

Fig. 4 is a schematic view of the installation structure of the table top and the lifter.

Fig. 5 is a schematic structural view of the bottom of the mesa.

Detailed Description

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

example 1

Referring to fig. 1-3, the present invention discloses a frameless elevator, which comprises a housing 1, wherein an opening 111 for exposing a display screen out of the upper end surface 11 of the housing 1 is arranged on the upper end surface 11 of the housing 1, a cover plate 2 is movably arranged at the opening 111, a lifting frame 3 capable of lifting is also arranged in the housing 1, the display screen is arranged on the elevator and can lift along with the lifting frame 3, a linkage mechanism 4 for driving the cover plate 2 to synchronously open and close along with the lifting frame 3 is arranged between the lifting frame 3 and the cover plate 2, in the present invention, the linkage mechanism 4 can drive the cover plate 2 to synchronously move obliquely downwards along with the lifting frame 3, the opening 111 is opened, the cover plate 2 can also be driven to synchronously move obliquely upwards along with the lifting frame 3, the opening 111 is sealed, the opening 111 is closed, the linkage mechanism 4 comprises an inclined slide rail 41 arranged along the inclined direction and a slide block 42 slidably arranged on the inclined slide rail 41, the inclined slide rails 41 are arranged on two sides of the inner portion of the shell 1, the inclined arrangement of the inclined slide rails 41 avoids collision caused by mutual interference between the movement of the cover plate 2 and the movement of the display screen, the sliding block 42 is connected with a buffer power spring 43 for providing downward sliding tension for the sliding block 42 and a traction rope 44 for providing upward sliding tension for the sliding block 42, in the embodiment, the traction rope 44 is a steel wire rope, the traction rope 44 is sleeved with a limiting block 45, the limiting block 45 does not slide relative to the traction rope 44, the crane 3 is provided with a synchronous pressing plate 46 for pressing the limiting block 45 down to enable the traction rope 44 to synchronously slide up and down along with the crane 3, in the embodiment, the limiting block 45 is a rubber column body fixedly connected with the traction rope 44, and is beneficial to the fit when the limiting block 45 abuts against the synchronous pressing plate 46, a steering piece 47 is arranged beside the inclined slide rails 41, the steering piece 47 divides the traction rope 44 into a vertical end moving At the oblique end, the pulling rope 44 is connected with the sliding block 42 after being turned by the turning piece 47.

In this embodiment, the steering component 47 includes a steering wheel and a guide wheel sequentially arranged from top to bottom, and the guide wheel plays a role in guiding and limiting the pulling rope 44.

In the use, when the display screen is accomodate in casing 1, crane 3 is located casing 1 below, synchronous clamp plate 46 keeps pushing down stopper 45 state, draw string 44 is fixed, the sliding block 42 that is connected with it is located the upper end of slope slide rail 41, be fixed in opening 111 department with apron 2, buffering helping hand spring 43 is in tensile state this moment, when crane 3 rose, synchronous clamp plate 46 rose along with crane 3, stopper 45 breaks away from the suppression of synchronous clamp plate 46, buffering helping hand spring 43 contracts thereby drive sliding block 42 and follow slope slide rail 41 downward translation to the below, thereby open opening 111, the slope end of draw string 44 was pulled down along with this moment, stopper 45 on the vertical end shifts up, when crane 3 rose to the upper limit, the display screen just revealed on mesa 8 above the lift completely.

When the display screen is to be accomodate in casing 1 by mesa 8, crane 3 descends, and synchronous clamp plate 46 descends thereupon, and until synchronous clamp plate 46 offsets with stopper 45, thereby push down stopper 45 and drive the perpendicular end of tractive line 44 and slide down, the sliding block 42 that the tractive is connected with the tip of inclining moves along slope slide rail 41 rebound to make apron 2 remove to opening 111 department, shutoff opening 111.

The invention realizes the linkage motion of the cover plate 2 and the lifting frame 3 through the pulling rope 44, the limiting block 45 and the synchronous pressing plate 46, has simple structure, and the cover plate 2 is driven by the flexible drive of the pulling rope 44, the buffer boosting spring 43 and the like, so the linkage mechanism 4 runs smoothly.

As a specific embodiment of the present invention, a fixed ear plate 12 is arranged below the housing 1, a limit ear plate 13 is arranged below the steering element 47, limit guide holes for limiting and guiding the pulling rope 44 are respectively formed in the limit ear plate 13 and the synchronous pressing plate 46, one end of the pulling rope 44 is connected to the fixed ear plate 12, the other end of the pulling rope 44 sequentially passes through the synchronous pressing plate 46 and the limit guide holes in the limit ear plate 13 and is connected to the upper end of the sliding block 42 after being steered by the steering element 47, the limit block 45 is arranged between the fixed ear plate 12 and the synchronous pressing plate 46, and the pulling rope 44 is limited by the limit guide holes in the limit ear plate 13 and the synchronous pressing plate 46, so that the synchronous pressing plate 46 and the limit block 45 on the pulling rope 44 are always arranged in the same vertical direction.

As a specific embodiment of the present invention, a sliding groove 49 is formed through the side of the inclined sliding rail 41, the sliding block 42 includes a sliding end sliding along the inclined sliding rail 41 and a connecting end for connecting the cover plate 2, a transition section passing through the sliding groove 49 is formed between the sliding end and the connecting end, and a cover plate support arm 21 is arranged between the connecting end and the cover plate 2 in the vertical direction.

The head and tail ends of the inclined slide rail 41 are provided with limiting convex blocks to avoid the slide block 42 from derailing.

In an embodiment of the present invention, the axis of the buffering power spring 43 is parallel to the inclined slide rail 41, a fixing block for fixing the buffering power spring 43 is disposed beside the inclined slide rail 41, two ends of the buffering power spring 43 are respectively connected to the fixing block and the slide block 42, and the axis of the buffering power spring 43 is parallel to the inclined slide rail 41, so as to contribute to the action of the elastic force of the buffering power spring 43 on the slide block 42 and reduce the resistance of the slide block 42 in sliding downward.

As a specific embodiment of the present invention, a display screen is rotatably connected to the crane 3, an angle adjusting mechanism 5 for adjusting an inclination angle of the display screen is disposed between the crane 3 and the display screen, the angle adjusting mechanism 5 includes a fixing frame 51, a screen rotating shaft 52 and a driving shaft 53 for driving the screen rotating shaft 52 to rotate, the screen rotating shaft 52 is fixedly connected to the display screen, the screen rotating shaft 52 and the driving shaft 53 are rotatably disposed on the fixing frame 51 through a bearing sleeve, a driven fixing wheel 54 and a driving fixing wheel 55 are respectively sleeved on the screen rotating shaft 52 and the driving shaft 53, the driven fixing wheel 54 and the screen rotating shaft 52 do not rotate relatively, the driving fixing wheel 55 and the driving shaft 53 do not rotate relatively, for example, the driven fixing wheel 54 and the driving fixing wheel 55 are fixed to each other through screws, a first connecting rod 56 and a second connecting rod 57 parallel to each other are connected between the driven fixing wheel 54 and the driving fixing wheel 55, a first, A first hinge hole and a second hinge hole which are mutually hinged by a second connecting rod 57, a third hinge hole and a fourth hinge hole which are mutually hinged with the first connecting rod 56 and the second connecting rod 57 are arranged on the ring surface of the driving fixed wheel 55, two ends of the first connecting rod 56 and the second connecting rod 57 are respectively hinged on the driven fixed wheel 54 and the driving fixed wheel 55, the axes of the first hinge hole and the second hinge hole, the axes of the third hinge hole and the fourth hinge hole, the first connecting rod 56 and the second connecting rod 57 form a parallelogram transmission structure, the driving shaft 53 is connected with a driving component 58 for driving the driving shaft 53 to rotate, the driving shaft 53 is driven by the driving component 58 to rotate, the axes of the third hinge hole and the fourth hinge hole are driven to rotate, and then the axes of the first hinge hole and the second hinge hole are driven to rotate by the first connecting rod 56 and the second connecting rod 57 in a linkage manner, and the screen rotating shaft 52 rotates accordingly, the display screen rotates with the screen rotating shaft 52 as an axis, so that the inclination angle of the display screen can be adjusted.

In order to improve the stability of the parallelogram transmission structure, two driven fixed wheels 54 and two driving fixed wheels 55 can be respectively arranged, and a first connecting rod 56 and a second connecting rod 57 are clamped between the two driven fixed wheels 54 and the two driving fixed wheels 55.

As a specific embodiment of the present invention, the driving assembly 58 includes a first reducer 582 and a second reducer 583 respectively connected to the driving motor 581, the first reducer 582 and the second reducer 583 are both dual-shaft worm gear reducers, the dual-shaft worm gear reducer adopted in the present invention has self-locking property, the shaking after the display screen is positioned is reduced, the first reducer 582 and the second reducer 583 are connected by an elastic coupling 584, the clearance generated by the reducers at both ends during the transmission process can be eliminated by the elastic coupling 584, the precision and the smoothness of rotation are improved, the output shafts of the first reducer 582 and the second reducer 583 which are far away from each other are respectively connected with a rigid coupling 585, the driving shaft 53 and the rigid coupling 585 are connected with each other by a damping shaft 586, the rigid coupling 585 can balance the torques at both ends, the rotation precision is further increased, and the buffering is realized by combining the damping shaft 586, And (5) a shock absorption effect.

In the present invention, the first decelerator 582 and the second decelerator 583 are respectively connected to the driving motor 581, wherein the first decelerator 582/the second decelerator 583 and the driving motor 581 thereof may be independent decelerator and motor products, and may be a commercially available integrated deceleration motor.

As a specific embodiment of the present invention, the lifting frame 3 is connected to a lifting mechanism 6, the lifting mechanism 6 includes a lifting motor 61 and a belt pulley transmission assembly, the belt pulley transmission assembly includes a driving wheel 62, a synchronizing wheel and a conveying belt 64 sleeved between the driving wheel 62 and the synchronizing wheel, the driving wheel 62 is sleeved on an output shaft of the lifting motor 61, and the conveying belt 64 is connected to the lifting frame 3 through a conveying belt pressing block 65. In the operation process, the lifting motor 61 rotates to drive the driving wheel 62 to rotate, so as to drive the conveyor belt 64 to rotate around the driving wheel 62 and the synchronous wheel, and the lifting frame 3 fixed with the conveyor belt rotates along with the rotation.

Example 2

Referring to fig. 1, the present embodiment is different from embodiment 1 in that an auxiliary spring 48 is disposed above the fixed ear plate 12, and the auxiliary spring 48 is sleeved outside the pulling rope 44. When the display screen is stored in the shell 1, the lifting frame 3 is positioned below the shell 1, the synchronous pressing plate 46 keeps a state of pressing the limiting block 45 downwards, the auxiliary spring 48 is compressed, and then when the lifting frame 3 ascends, the auxiliary spring 48 extends to provide assistance for the buffering assistance spring 43.

Example 3

Referring to fig. 3, the difference between the present embodiment and embodiment 1 is that the angle adjusting mechanism 5 is further provided with a detecting assembly 7 for detecting a current tilt state of the display screen, the detecting assembly 7 includes a first photosensor 71 and a second photosensor 72, the first photosensor 71 and the second photosensor 72 are respectively provided with a first shielding plate 73 and a second shielding plate 74 for shielding optical signals thereof, the first shielding plate 73 and the second shielding plate 74 are annular plates with a gap 75 and are concentrically arranged with the driving shaft 53, in the present embodiment, the first shielding plate 73 and the second shielding plate 74 are fixed by a fixing ring sleeved on the driving shaft 53 or the damping shaft 586, and the gaps 75 of the first shielding plate 73 and the second shielding plate 74 are not completely overlapped to ensure that only one photosensor is shielded; the inclined state includes a forward tilting state, a backward tilting state and a vertical state, when the display screen is in the vertical state, the optical signals of the first photoelectric sensor 71 and the second photoelectric sensor 72 are simultaneously shielded, when the display screen is in the forward tilting state, only the optical signal of the first photoelectric sensor 71 is shielded, and when the display screen is in the backward tilting state, only the optical signal of the second photoelectric sensor 72 is shielded.

Specifically, when the display screen is in a vertical state, the optical signals of the first photosensor 71 and the second photosensor 72 are simultaneously blocked; when the display screen is in a forward tilting state, the first photoelectric sensor 71 is shielded by the annular surface of the first shielding plate 73, the notch 75 of the second shielding plate 74 is just shifted to the second photoelectric sensor 72, and the optical signal of the second photoelectric sensor 72 is not shielded, that is, only the optical signal of the first photoelectric sensor 71 is shielded; when the display screen is in a backward leaning state, only the optical signal of the second photoelectric sensor 72 is shielded, the control program judges the current forward leaning state of the display screen through the condition that whether the optical signals of the first photoelectric sensor 71 and the second photoelectric sensor 72 are shielded, before the display screen is put into the shell 1, the control program judges the current leaning state of the display screen firstly, if the display screen is not in a vertical state, the drive shaft 53 is controlled to rotate to adjust the display screen to the vertical state (namely, the drive shaft 53 is controlled to rotate until the optical signals of the first photoelectric sensor 71 and the second photoelectric sensor 72 are shielded at the same time)

According to the invention, through the detection assembly 7, whether the display screen is in a vertical state before being stored can be judged, the display screen is reset to the vertical state through the judgment result, the angle is not required to be adjusted manually, meanwhile, the display screen is effectively prevented from colliding with the notch 81 and the opening 111 in the storage process, the storage of the display screen is more convenient and smooth, and the safety degree is higher.

Example 4

Referring to fig. 4 to 5, an installation structure of a frameless elevator, including a table top 8 disposed above the elevator, the upper end surface 11 includes an installation ring surface 113 disposed at an edge of the upper end surface 11, an inner side of the installation ring surface 113 extends upwards and bends to form a protruding wall 112 for installation and positioning and for the cover plate 2 to move, the inside of the protruding wall 112 is hollow, an opening 111 is disposed on an upper surface of the protruding wall 112, a groove 82 for accommodating the protruding wall 112 is disposed at the bottom of the table top 8, a notch 81 adapted to the opening 111 is disposed at the bottom of the groove 82 in a penetrating manner, and a size of the notch 81 can be set to be equal to or slightly larger than the opening 111.

The elevator can be applied to places such as training rooms, meeting rooms and the like, and as the table top 8 usually has a certain thickness, in order to avoid the collision between the cover plate 2 and the inner wall of the notch 81 when moving along the inclined slide rail 41, the bottom of the notch 81 is provided with the groove 82, and the elevator is correspondingly provided with the convex wall 112 so as to provide enough activity space for the cover plate 2 when moving along the inclined slide rail 41.

On the other hand, in the installation process of the invention, the opening 111 and the notch 81 can be quickly assembled and overlapped in a precise manner in the vertical direction by inserting the raised wall 112 into the groove 82, so that the quick installation and positioning of the lifter are realized, and then the lifter and the table top 8 are fixed.

According to the invention, only the notch 81 matched with the opening 111 in specification and size is formed in the table top 8, and the improvement of the upper end surface 11 of the elevator and the bottom of the table top 8 is combined, so that the mounting effects of small opening of the table top 8 and no frame in elevator mounting are effectively realized, the effective utilization of the space of the table top 8 is facilitated, and the table top 8 is neat and beautiful.

As a specific embodiment of the present invention, at least one inner wall of the raised wall 112 along the length direction is an inclined plane gradually extending from the opening 111 to the lower side, so that the outer diameter and width of the raised wall 112 are reduced, and the cover plate 2 is prevented from colliding with the inner wall of the raised wall 112 when moving along the inclined slide rail 41, thereby reducing the consumable material.

In this document, "first", "second", "third", "fourth", and the like are used only for distinguishing one from another, and do not indicate importance, order, and the like of them, and a premise that each other exists.

It should be understood that the above-mentioned drawings are merely illustrative of the preferred embodiments of the present invention, and that the scope of the invention is not limited thereto.

Claims

1. A frameless elevator comprises a shell, wherein the upper end surface of the shell is provided with an opening, a cover plate is movably arranged at the opening, a lifting frame capable of performing lifting action is further arranged in the shell, the frameless elevator is characterized in that a linkage mechanism used for driving the cover plate to synchronously perform opening and closing movement along with the lifting of the lifting frame is arranged between the lifting frame and the cover plate, the linkage mechanism comprises an inclined slide rail arranged along the inclined direction and a sliding block arranged on the inclined slide rail in a sliding manner, the inclined slide rail is arranged at two sides in the shell, the sliding block is connected with a buffering power-assisted spring used for providing downward sliding tension for the sliding block and a traction rope used for providing upward sliding tension for the sliding block, the traction rope is sleeved with a limiting block, the lifting frame is provided with a synchronous pressing plate used for pressing the limiting block downwards to enable the traction, the traction rope is connected with the sliding block after being turned by the turning piece.

2. The frameless elevator defined in claim 1, wherein a fixed ear plate is provided below the housing, a limit ear plate is provided below the steering member, limit guide holes for limiting and guiding the pulling rope are respectively provided on the limit ear plate and the synchronous pressing plate, one end of the pulling rope is connected to the fixed ear plate, the other end of the pulling rope sequentially passes through the synchronous pressing plate and the limit guide holes on the limit ear plate and is connected to the upper end of the sliding block after being steered by the steering member, and the limit block is provided between the fixed ear plate and the synchronous pressing plate.

3. The frameless elevator defined in claim 2, wherein an auxiliary spring is disposed above the fixed ear plate, the auxiliary spring being sleeved outside the pulling rope.

4. The frameless elevator defined in claim 2, wherein the inclined rails are laterally provided with sliding grooves, the sliding blocks comprise sliding ends that slide along the inclined rails and connecting ends for connecting cover plates, transition sections that pass through the sliding grooves are provided between the sliding ends and the connecting ends, and cover plate support arms are provided between the connecting ends and the cover plates in a vertical direction.

5. The frameless elevator defined in claim 1, wherein the axis of the buffer booster spring is parallel to the inclined slide rail, a fixing block for fixing the buffer booster spring is disposed beside the inclined slide rail, and both ends of the buffer booster spring are respectively connected to the fixing block and the slide block.

6. The frameless elevator of claim 1, wherein the elevating frame is rotatably connected with a display screen, an angle adjusting mechanism for adjusting the inclination angle of the display screen is arranged between the elevating frame and the display screen, the angle adjusting mechanism comprises a fixing frame, a screen rotating shaft and a driving shaft for driving the screen rotating shaft to rotate, the screen rotating shaft and the driving shaft are rotatably arranged on the fixing frame, the screen rotating shaft and the driving shaft are respectively sleeved with a driven fixed wheel and a driving fixed wheel, a first connecting rod and a second connecting rod which are parallel to each other are connected between the driven fixed wheel and the driving fixed wheel, two ends of the first connecting rod and two ends of the second connecting rod are respectively hinged to the driven fixed wheel and the driving fixed wheel, and the driving shaft is connected with a driving component for driving the driving shaft to rotate.

7. The frameless elevator defined in claim 6, wherein the drive assembly comprises a first speed reducer and a second speed reducer respectively connected with a drive motor, the first speed reducer and the second speed reducer are both double-shaft worm gear and worm speed reducers, the first speed reducer and the second speed reducer are connected through an elastic coupling, output shafts of the first speed reducer and the second speed reducer, which are far away from each other, are respectively connected with a rigid coupling, and the drive shaft and the rigid coupling are connected with each other through a damping shaft.

8. The frameless elevator defined in claim 6, wherein the angle adjustment mechanism further comprises a detection assembly for detecting the current tilt state of the display screen, the detection assembly comprises a first photoelectric sensor and a second photoelectric sensor, the first photoelectric sensor and the second photoelectric sensor are respectively provided with a first shielding plate and a second shielding plate for shielding the optical signals thereof, the first shielding plate and the second shielding plate are annular plates with notches and are arranged concentrically with the drive shaft, and the notches of the first shielding plate and the second shielding plate are not completely overlapped; the inclined state comprises a forward tilting state, a backward tilting state and a vertical state, when the display screen is in the vertical state, optical signals of the first photoelectric sensor and the second photoelectric sensor are simultaneously shielded, when the display screen is in the forward tilting state, only the optical signal of the first photoelectric sensor is shielded, and when the display screen is in the backward tilting state, only the optical signal of the second photoelectric sensor is shielded.

9. The frameless elevator defined in any one of claims 1 to 8, wherein the elevator frame is connected to an elevator mechanism, the elevator mechanism comprises an elevator motor and a pulley transmission assembly, the pulley transmission assembly comprises a driving wheel, a synchronizing wheel and a conveyor belt sleeved between the driving wheel and the synchronizing wheel, the driving wheel is sleeved on an output shaft of the elevator motor, and the conveyor belt is connected to the elevator frame through a conveyor belt press block.

10. The mounting structure of a frameless elevator as defined in any one of claims 1 to 8, comprising a table top disposed above the elevator, wherein the upper end face comprises a mounting ring surface disposed at the edge of the upper end face, the inner side of the mounting ring surface extends and bends upward to form a raised wall for mounting, positioning and moving the cover plate, the raised wall is hollow inside, the opening is disposed on the upper surface of the raised wall, the bottom of the table top is provided with a groove for accommodating the raised wall, and the bottom of the groove is provided with a notch adapted to the opening.