CN221443889U - Light and thin waterproof display screen lifter - Google Patents

Abstract

The utility model discloses a light and thin waterproof display screen lifter, which comprises a display screen assembly, a machine body shell and a lifting mechanism; a containing cavity is formed in the machine body shell; the lifting mechanism comprises a chain, a lifting driving device and a lifting transmission device; the chain is connected with the display screen assembly; the lifting driving device comprises a lifting motor and a waterproof structure, and the waterproof structure is used for preventing liquid from invading the lifting motor; the lifting transmission device comprises a lifting driving wheel and a lifting driven wheel; the outer peripheral surface of the lifting driven wheel is provided with a first meshing tooth meshed with an inner hole of the chain, and the end surface of the lifting driven wheel is provided with a first matching part; the lifting driving wheel is provided with a second matching part; the lifting driving device provides power, and torque is transmitted to the lifting driven wheel through the cooperation of the first cooperation part and the second cooperation part, so that the first meshing teeth and the chain mesh and pull the display screen assembly to extend or retract the accommodating cavity. The utility model has the characteristics of small thickness, simple structure, stable transmission and water resistance.

Description

Light and thin waterproof display screen lifter

Technical Field

The utility model relates to the technical field of elevators, in particular to a light and thin waterproof display screen elevator.

Background

Modern display devices, such as televisions, particularly plasma and liquid crystal ultrathin televisions, bring high-quality visual enjoyment to the life of people, generally people often hang the televisions on a wall or put the televisions in a television cabinet, however, the televisions cannot be stored on the wall or the television cabinet, certain space is occupied when the televisions are not used, and although some elevators for storing the televisions are also used for adjusting the height and the angle of the televisions in the market at present, the televisions cannot be stored so as to save occupied space when people do not use the televisions and make rooms tidy. With the advent of informatization and digitalization, a large amount of information data needs to be processed every day, and sometimes decision makers need to master and know the information in a short-distance or long-distance manner in a meeting mode, so that a large amount of large-scale conferences such as multimedia conferences and video conferences are presented. In order to meet the needs, a plurality of media lifting platforms appear in China, but the existing display screen lifter is large in size, is independently placed on the ground, occupies a large amount of space, and is difficult to adapt to the development of increasingly lighter and thinner display screens. There is a need for a lighter, thinner, simple structure display screen elevator with a low failure rate.

Disclosure of utility model

In order to overcome the defects of the prior art, the utility model aims to provide the light and thin waterproof display screen lifter which can adapt to the development of the increasingly light and thin modern display screen, has the characteristics of small thickness, simple structure, stable transmission and water resistance.

The utility model adopts the following technical scheme:

a light and thin waterproof display screen lifter is characterized by comprising a display screen assembly, a machine body shell and a lifting mechanism; the machine body shell is provided with a back plate, and a containing cavity is formed in the machine body shell; the accommodating cavity is used for accommodating the display screen assembly and the lifting mechanism;

The lifting mechanism comprises a chain, a lifting driving device and a lifting transmission device; the chain is connected with the display screen assembly; the lifting driving device comprises a lifting motor and a waterproof structure, wherein the lifting motor is provided with an output shaft, and the waterproof structure is used for preventing liquid from invading the lifting motor;

The output shaft of the lifting motor is arranged in parallel with the backboard; the lifting transmission device comprises a lifting driving wheel and a lifting driven wheel; the outer peripheral surface of the lifting driven wheel is provided with a first meshing tooth, the first meshing tooth is meshed with an inner hole of the chain, and the end surface of the lifting driven wheel is provided with a first matching part; the lifting driving wheel is arranged on an output shaft of the lifting motor device, and a second matching part is arranged on the lifting driving wheel; the first matching part is matched with the second matching part;

And the lifting driving device is powered, and torque is transmitted to the lifting driven wheel through the cooperation of the first cooperation part and the second cooperation part, so that the first meshing teeth and the chain mesh to pull the display screen assembly to extend or retract into the accommodating cavity.

In an alternative embodiment, the waterproof structure comprises a lifting motor fixing frame, the lifting motor fixing frame is used for fixing the lifting motor on the back plate, a sealed waterproof space is formed inside the lifting motor fixing frame, and the lifting motor is arranged in the waterproof space.

In an optional embodiment, the waterproof structure further comprises a diversion structure, and the diversion structure is arranged above the gravity direction of the lifting motor and used for blocking and diversion of liquid.

In an optional implementation manner, the first matching part is a plurality of protruding blocks which are annularly and uniformly distributed on the end face of the lifting driven wheel; the second matching parts are a plurality of grooves formed on the outer peripheral surface of the lifting driving wheel, and the number of the protruding blocks is consistent with that of the grooves; the lug is cylindrical, the lug end is provided with the buffer surface, the buffer surface is the conical surface.

In an alternative embodiment, the display assembly includes a display body and a lifting transmission frame that are connected to each other; the lifting transmission frame is connected with the chain so as to drive the display screen body to extend out of or retract into the accommodating cavity.

In an optional implementation manner, a first sliding block is arranged on one side, close to the back plate, of the lifting transmission frame, a first guide rail is arranged at a corresponding position of the back plate, the direction of the first guide rail is consistent with the direction of the display screen body extending or retracting the accommodating cavity, and the first sliding block is in sliding connection with the first guide rail.

In an alternative embodiment, the body shell further comprises two oppositely arranged side plates; the side plate is provided with a second sliding rail, and the direction of the second sliding rail is consistent with the direction of the display screen body extending out of or retracting back into the accommodating cavity; the side face of the lifting transmission frame is provided with a second sliding block, and the second sliding block is in sliding connection with the second sliding rail.

In an alternative embodiment, two ends of the second sliding rail are respectively provided with a first limiting piece and a second limiting piece; when the display screen body reaches the extending limit position, the top of the second sliding block is propped against the first limiting piece; when the display screen body reaches the retraction limit position, the bottom of the second sliding block is propped against the second limiting piece.

In an alternative embodiment, a locking mechanism is provided on the second slider, and the locking mechanism can lock the lifting transmission frame position to an extension limit position or a retraction limit position.

In an alternative embodiment, the machine body shell is provided with a top plate, and a closing door plate is arranged on the top plate and can be opened or covered on the top plate; when the display screen component stretches out of the accommodating cavity, the closed door plate is in an open state, and when the display screen component retracts back into the accommodating cavity, the closed door plate is in a covering state.

Compared with the prior art, the utility model has the beneficial effects that:

According to the display screen lifter, the axis of the lifting driven wheel is perpendicular to the backboard, so that the traction direction of the lifting driven wheel driving the chain is consistent with the sliding direction of the display screen assembly in and out of the machine body shell, and the display screen lifter runs more stably and smoothly; the power of the lifting driving device is transmitted to the lifting driven wheel through the first matching part and the second matching part which are matched with each other, the axis of the output shaft is parallel to the back plate through the matching of the first matching part and the second matching part, the side plate size of the machine body shell is greatly reduced, the thickness of the lifter can be reduced to 54mm, the display screen lifter is lighter and thinner, and the display screen lifter is suitable for the light and thin development of the current display screen; and the reversing mechanism is not required to be additionally arranged, so that the reversing and power transmission functions can be simultaneously completed, and the novel reversing device has the characteristics of simple structure and stable transmission. In order to achieve the advantages of short power transmission stroke, stability and reliability and high transmission efficiency, the lifting driving wheel and the lifting driven wheel are adopted for power transmission, but meanwhile, the lifting driving device is positioned below the position of the top plate for the display screen assembly to enter and exit, the top plate is generally used as a tabletop when the display screen assembly is retracted to the storage cavity, so that liquid such as beverage or drinking water is easy to invade the lifting driving device below the tabletop when penetrating into the lifting driving device, equipment faults are caused, and in order to avoid accidents, the fault probability of the lifting motor is reduced, the lifting motor is protected by the waterproof structure, and the waterproof structure comprises a waterproof space capable of protecting the lifting motor and a flow guiding structure capable of blocking flow guiding for liquid, so that the protection of the lifting driving device is further perfected, and the faults caused by the direct invasion of the liquid into the lifting driving device are effectively prevented.

Drawings

Fig. 1 is a perspective view of a display screen lifter of embodiment 1;

FIG. 2 is a partial enlarged view of the portion A of example 1;

FIG. 3 is a schematic view showing the use state of the display lifter of embodiment 1;

FIG. 4 is a front view of the display lifter of embodiment 1;

FIG. 5 is a left side view of the display lifter of embodiment 1;

FIG. 6 is a rear view of the display lifter of example 1;

FIG. 7 is a schematic view of the display lifter of embodiment 1 at another angle;

fig. 8 is a schematic structural diagram of a lifting transmission frame in embodiment 1;

FIG. 9 is a partial enlarged view of the portion B of example 1;

FIG. 10 is a partial schematic view of a display lifter of embodiment 1;

FIG. 11 is a partial enlarged view of the portion C of example 1;

FIG. 12 is a schematic view showing a partial structure of the display screen lifter of embodiment 1 at another angle;

fig. 13 is a partial enlarged view of the F site of example 1;

FIG. 14 is a schematic view of the structure of the closing control mechanism of embodiment 1;

fig. 15 is a partial enlarged view of the part D of example 1;

Fig. 16 is a partial enlarged view of the E site of example 1.

In the figure: 100. a display screen assembly; 110. a display screen body; 120. lifting the transmission frame; 121. a first slider; 122. a second slider; 123. a third slider; 125. a clamping mechanism; 1251. a fixed block; 1252. a movable block; 130. an angle adjusting mechanism; 131. a toothed plate; 132. an angle control wheel; 133. an angle driving device; 200. a lifting mechanism; 210. a lifting driving device; 211. an output shaft; 212. a lifting motor fixing frame; 213. a flow guiding structure; 220. a lifting transmission device; 221. lifting the driving wheel; 2211. a second mating portion; 222. lifting the driven wheel; 2221. a first mating portion; 2222. a first engagement tooth; 230. a chain; 231. a sprocket; 300. a housing; 310. a first guide rail; 320. a second guide rail; 321. a first limiting member; 322. a second limiting piece; 330. a third guide rail; 340. closing the door panel; 350. closing the control mechanism; 351. closing a control block; 352. closing the pull rod; 353. closing the rocker; 354. a rotation shaft; 400. a drive control module; 410. and (5) plugging the port.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments. Materials and equipment used in this example are commercially available, except as specifically noted. Examples of such embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. In the description of the present application, the meaning of "a plurality" is two or more, unless specifically stated otherwise.

In the description of the present application, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be fixedly connected, or may be connected through an intermediary, or may be connected between two elements or may be an interaction relationship between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

The terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Example 1:

Referring to fig. 1-7, a display lifter includes a display assembly 100, a lifting mechanism 200 and a housing 300;

the body casing 300 has two opposite side plates, a back plate, a front plate and a top plate, and a receiving cavity is formed in the body casing 300 and is used for receiving the display screen assembly 100 and the lifting mechanism 200;

The lifting mechanism 200, the lifting mechanism 200 comprises a lifting driving device 210, a lifting transmission device 220 and a chain 230; the chain 230 is connected to the display assembly 100; the lifting driving device 210 comprises a lifting motor, the lifting motor is provided with an output shaft 211, and the axis of the output shaft 211 is parallel to the backboard; the lifting transmission device 220 comprises a lifting driving wheel 221 and a lifting driven wheel 222;

The lifting driven wheel 222 is rotatably connected to the back plate of the machine body shell 300 through a bearing, and the axis of the lifting driven wheel 222 is perpendicular to the back plate; the outer circumferential surface of the lifting driven wheel 222 forms a first engagement tooth 2222 engaged with the chain 230, and the end surface of the lifting driven wheel 222 is provided with a first mating portion 2221;

The lifting driving wheel 221 is connected with the output shaft 211, and the outer circumferential surface of the lifting driving wheel 221 is provided with a second engaging portion 2211 engaged with the first engaging portion 2221; the lifting drive device 210 is powered, torque is transmitted to the lifting driven wheel 222 through the cooperation of the first cooperation portion 2221 and the second cooperation portion 2211, and the first meshing tooth 2222 cooperates with the chain 230 to draw the display screen assembly 100 out of or into the accommodating cavity.

The lifting drive device 210 includes a waterproof structure for protecting the lifting motor from malfunction due to liquid intrusion. The waterproof structure comprises a lifting motor fixing frame 212, wherein the lifting motor fixing frame 212 is used for fixing a lifting motor on the backboard, a sealed waterproof space is formed inside the lifting motor fixing frame 212, and the lifting motor is arranged in the waterproof space. Further, the waterproof structure further comprises a flow guiding structure 213, the flow guiding structure 213 is arranged above the gravity direction of the lifting motor and used for blocking and guiding liquid, and when the liquid is dropped from the upper part, the flow guiding structure 213 has a flow guiding function, and water is led out to protect the lifting motor.

In the embodiment, the axis of the lifting driven wheel 222 is perpendicular to the backboard, so that the traction direction of the lifting driven wheel 222 driving the chain 230 is consistent with the sliding direction of the display screen assembly 100 in and out of the machine body shell 300, and the operation is more stable and smooth; the power of the lifting driving device 210 is transmitted to the lifting driven wheel 222 through the first matching part 2221 and the second matching part 2211 which are matched with each other, the axis of the output shaft 211 is parallel to the backboard through the matching of the first matching part 2221 and the second matching part 2211, the side plate size of the machine body shell 300 is greatly reduced, the thickness of the lifter can be reduced to 54mm through the scheme, the display screen lifter is lighter and thinner, and the display screen lifter is suitable for the light and thin development of the current display screen; the reversing mechanism is not required to be additionally arranged, so that the reversing and power transmission functions can be simultaneously completed, and the reversing mechanism has the characteristics of simple structure and stable transmission; in this embodiment, for the purpose of short power transmission stroke, more stable and reliable, the transmission efficiency is high, the lifting driving wheel 221 and the lifting driven wheel 222 are adopted to perform power transmission, but meanwhile, the lifting driving device 210 is located below the position of the top plate for the display screen assembly 100 to enter and exit, when the display screen assembly 100 is retracted to the storage cavity, the top plate is generally used as a tabletop, so that liquid such as beverage or drinking water is easy to invade the lifting driving device 210 below when penetrating, equipment failure is caused, in order to avoid accidents, the lifting driving device 210 is protected by arranging the lifting motor fixing frame 212 with a flow guiding structure, so as to play a role of blocking and guiding, and the liquid is prevented from directly invading the lifting driving device 210 to cause failure.

In some preferred embodiments, the number of the first engaging teeth 2222 formed on the outer peripheral surface of the lifting driven wheel 222 is preferably 18, and the number of the first engaging portions 2221 on the end surface of the lifting driven wheel 222 is identical to the number of the second engaging portions 2211 on the outer peripheral surface of the lifting driving wheel 221, so as to improve the stability of power transmission.

Specifically, the first mating portion 2221 is a plurality of protruding blocks which are annularly and uniformly distributed on the end surface of the lifting driven wheel 222, the protruding blocks are preferably cylindrical protruding blocks, a buffer surface is arranged at the tail end of each cylindrical protruding block, the buffer surface is preferably a conical surface, the first mating portion 2221 is better mated with the second mating portion 2211 under the guiding action of the buffer surface, the power transmission is stable, and the latch can be effectively prevented.

The second engaging portion 2211 is a plurality of grooves formed on the outer circumferential surface of the lifting driving wheel 221, and transmits power and reverses direction through the engagement of the protrusions and the grooves. The surface of the groove is provided with an arc-shaped surface matched with the cylindrical protruding block, so that surface contact is formed, the pressure resistance of power transmission is improved, and tooth breakage is prevented.

Further, the display assembly 100 includes a display body 110 and a lifting transmission frame 120 that are connected to each other, and the lifting transmission frame 120 is connected to the chain 230, so as to drive the display body 110 to extend out of the top plate completely. A first sliding block 121 is arranged on one surface of the lifting transmission frame 120, which is close to the back plate of the machine body shell 300, a first guide rail 310 is arranged at the corresponding position of the back plate of the machine body shell 300, and the direction of the first guide rail 310 is consistent with the moving direction of the display screen body 110 in and out of the accommodating cavity; through the sliding connection of the first slider 121 and the first guide rail 310, the first guide rail 310 plays a guiding role, so that the display screen body 110 can enter and exit the accommodating cavity more stably and smoothly.

The two side plates of the lifting transmission frame 120, which are close to the machine body shell 300, are respectively provided with a second sliding block 122 and a third sliding block 123; the two side plates of the body shell 300 are respectively provided with a second guide rail 320 and a third guide rail 330, and the directions of the second guide rail 320 and the third guide rail 330 are consistent with the movement direction of the display screen body 110 in and out of the accommodating cavity; through second slider 122 and second guide rail 320 sliding fit and third slider 123 and third guide rail 330 sliding fit, with lift drive frame 120 both ends are fixed, have improved the overall stability of display screen body 110, effectively avoid rocking.

The two ends of the second guide rail 320 are respectively provided with a first limiting part 321 and a second limiting part 322, the two ends of the third guide rail 330 are respectively provided with a third limiting part and a fourth limiting part, when the display screen body 110 completely stretches out of the accommodating cavity, the top of the second sliding block 122 is propped against the first limiting part 321, and meanwhile, the top of the third sliding block 123 is propped against the third limiting part, so that the second sliding block 122 and the third sliding block 123 are limited to further displace, and the position of the lifting transmission frame 120 is a stretching limit position. When the display screen body 110 is completely retracted into the accommodating cavity, the lower portion of the second slider 122 abuts against the second limiting member 322, and simultaneously, the lower portion of the third slider 123 abuts against the fourth limiting member, so as to limit the second slider 122 and the third slider 123 to further displace, and at this time, the position of the lifting transmission frame 120 is the retraction limit position.

Further, a locking mechanism is further included, and the locking mechanism is disposed on the second slider 122 and/or the third slider 123, and is used for locking the position of the lifting transmission frame 120 to the extending limit position or the retracting limit position. Specifically, the locking mechanism comprises a first electric lock, and the first electric lock is provided with an electric lock bolt which is controlled to extend or retract by an electromagnetic signal; the first limiting piece 321, the second limiting piece 322, the third limiting piece and the fourth limiting piece are all provided with clamping grooves matched with electric lock bolts, when the position of the lifting transmission frame 120 advances to the extending limit position or the retracting limit position, the electric lock bolts extend out and are clamped into the clamping grooves, so that the position locking of the lifting transmission frame 120 is realized, and when the position of the lifting transmission frame 120 needs to be changed, the electric lock bolts retract, and unlocking is completed. Further, the contact position of the clamping groove and the electric lock bolt can be provided with a rolling device, such as a roller with the axis perpendicular to the telescopic direction of the electric lock bolt, so that the friction force between the electric lock bolt and the clamping groove is reduced, the condition that the electric lock bolt is blocked is avoided, and the stability of the display screen lifter is improved.

The display screen assembly 100 is connected with a chain 230, the chain 230 pulls to drive the display screen assembly 100 to move so as to extend or retract the accommodating cavity, specifically, a sprocket 231 is arranged above the lifting driven wheel 222 in the gravity direction, the sprocket 231 is rotatably connected to the back plate, the chain 230 is sleeved on the lifting driven wheel 222 and the sprocket 231 in the circumferential direction, and of course, a reversing wheel or a tensioning wheel can be arranged on the chain 230 to adjust the moving angle or the tightness degree of the chain 230, which can be understood by those skilled in the art.

The connection part of the lifting transmission frame 120 and the chain 230 is provided with a clamping mechanism 125, the clamping mechanism 125 comprises a fixed block 1251 and a movable block 1252 which are arranged on two sides of the chain 230, and the movable block 1252 is close to the fixed block 1251 to clamp the chain 230 between the fixed block 1251 and the movable block, so that the lifting transmission frame 120 moves up and down under the traction of the chain 230 to drive the display screen body 110 to extend or retract into the accommodating cavity; the movable block 1252 releases the chain 230 away from the fixed block 1251, releasing the linkage of the chain 230 and the lifting drive frame 120. Specifically, the lifting transmission frame 120 is provided with a second electric lock, the movable block 1252 is movably connected to the lifting transmission frame 120 through the second electric lock, the second electric lock is provided with an electric lock bolt controlled to extend or retract by an electromagnetic signal, and the movable block 1252 is connected with the electric lock bolt.

The first electric lock and the second electric lock can be realized by other telescopic devices, such as a telescopic rod structure, a hydraulic rod structure, a gear rack structure and the like, and can be understood by those skilled in the art.

Further, the display screen body 110 is connected with the lifting transmission frame 120 in a hinged manner, and the display screen body 110 is hinged to the top of the lifting transmission frame 120, so that the display screen body 110 which completely extends out of the accommodating cavity can rotate relative to the machine body shell 300, and viewing requirements of different angles of a user are met.

An angle adjusting mechanism 130 is further arranged between the display screen body 110 and the lifting transmission frame 120, and the angle adjusting mechanism 130 comprises a toothed plate 131, an angle control wheel 132 and an angle driving device 133; the toothed plate 131 is fixed on one side of the display screen body 110, which is close to the lifting transmission frame 120, and a plurality of second meshing teeth are distributed on the peripheral surface of the toothed plate 131; the angle control wheel 132 is fixed to an output shaft of the angle driving device 133, and a third engagement tooth is formed on the outer circumferential surface of the angle control wheel 132, and the second engagement tooth is engaged with the third engagement tooth; the angle driving device 133 provides power to drive the angle control wheel 132 to rotate, and the second meshing teeth and the third meshing teeth are matched to transfer torque to the toothed plate 131, so that the display screen body 110 is driven to rotate relative to the lifting transmission frame 120, and angle adjustment control is realized.

As an alternative to the above embodiment, the angle adjustment mechanism 130 includes a worm wheel, a worm screw, and an angle driving device 133; the turbine is fixed on one side of the display screen body 110, which is close to the lifting transmission frame 120, the worm is fixed on an output shaft of the angle driving device 133, the worm is driven to rotate by the angle driving device 133, and the worm is matched with the turbine to drive the turbine to rotate, so that the display screen body 110 is driven to rotate relative to the lifting transmission frame 120.

Further, the top plate of the body case 300 is provided with a closing door plate 340 capable of closing the body case 300. When the display screen body 110 extends out of the accommodating cavity, the closing door plate 340 is opened; when the display screen body 110 is retracted to the accommodating cavity, the closed door plate 340 covers the top of the machine body shell 300, dust falling inside the accommodating cavity is prevented from playing a role in dust prevention by arranging the closed door plate 340, meanwhile, the whole machine body shell 300 is more attractive, the top of the top plate of the machine body shell 300 can be used as a tabletop, and the practicability is stronger. Specifically, the closing door panel 340 has a closing door shaft, and the closing door panel 340 is hinged to the top plate of the body case 300 through the closing door shaft, so that the closing door panel 340 can be rotated with respect to the top plate, and opened or closed by being turned over by a certain angle.

The opening and closing of the closing door 340 can be controlled by providing a door closing driving means; or the position of the display screen assembly 100 is sensed by arranging the sensing device, and the door plate 340 is closed by matching with the door plate closing driving device, so that the automatic closing function of the closed door plate 340 is realized, but the method has a complex structure and occupies a large space.

In some preferred embodiments, the device further comprises a closing control mechanism 350, wherein the closing control mechanism 350 is disposed on a side plate of the machine body shell 300, and the closing control mechanism 350 is connected with the closing door plate 340 and is used for controlling the closing door plate 340 to open or close.

The closure control mechanism 350 of the present embodiment includes a closure control block 351, a closure pull rod 352, and a closure rocker 353;

The closing rocker 353 is hinged with the side plate of the machine body shell 300, a rotating shaft 354 is formed at the hinged position, two ends of the rotating shaft 354 extend out of a first connecting end and a second connecting end respectively, and the first connecting end is hinged with the closing door plate 340. The second connection end is connected to a closure control block 351 via a closure pull rod 352. Specifically, the end of the closing pull rod 352 is provided with a slotted hole, and a fastener matched with the slotted hole is arranged in the slotted hole, so that the closing control block 351 and the end of the closing pull rod 352 are fixed, and the fixed position of the closing control block 351 can be conveniently adjusted by arranging the slotted hole.

The closing control block 351 is slidably connected to the second guide rail 320, and is close to one end of the second limiting member 322; when the display screen assembly 100 is retracted, the second slider 122 moves towards the second limiting member 322, and when reaching the end of the second guide rail 320, the bottom of the second slider 122 contacts with the closing control block 351, so as to push the closing control block 351 to move a distance towards the second limiting member 322 together, and the moving pair is transferred to the second connecting end through the closing pull rod 352, so as to drive the closing rocker 353 to rotate around the rotating shaft 354 for a certain angle, and drive the closing door plate 340 connected to the first connecting end to cover the top plate of the machine body shell 300.

In this embodiment, the closing rocker 353 is provided to drive the closing door plate 340 to open or cover the top plate of the housing 300, the second connecting end that drives the closing rocker 353 to rotate is connected with the closing control block 351 through the closing pull rod 352, the closing control block 351 is arranged at the bottom of the second guide rail 320 and is driven by the second slider 122, that is, the second slider 122 slides to drive the display screen assembly 100 to retract into the accommodating cavity, and the action of the closing door plate 340 is automatically completed; the second slider 122 supports against the closing control block 351 after the display screen assembly 100 is retracted, the closing control block 351 is limited to slide upwards, the closing control block 340 can be opened only when the display screen assembly 100 stretches out of the accommodating cavity, the second slider 122 slides upwards to unlock the closing control block 351, the linkage effect of the closing door plate 340 and the display screen assembly 100 is achieved, the closing door plate 340 can be controlled without providing other power devices, the self-locking function of the closing door plate 340 is achieved, and the self-locking mechanism is simple in structure and reliable in operation.

The closing rocker 353 can rotate clockwise or counterclockwise under the driving of the closing pull rod 352, so as to drive the closing door 340 to push out or pull back the lid to the top plate.

In some alternative embodiments, the closure door 340 is turned over outwards to open, and when the display assembly 100 is extended, the closure door 340 is pushed open by the upward movement of the display assembly 100; when the display assembly 100 is retracted into the receiving cavity, the closing door plate 340 is covered on the top plate by gravity, and when the second slider 122 slides to approach the retraction limit position, the closing control block 351 is pushed to completely close the closing door plate 340, and the closing control block 351 is limited to slide upwards, so that the closing door plate 340 is locked. However, the method relies on the display screen assembly 100 to be ejected upwards to be opened, and the display screen assembly 100 is always in lap friction with the display screen assembly 100 after being opened, so that the display screen assembly 100 is easy to damage and scratch; and the closing door plate 340 is exposed outside, so that a certain space is occupied to influence the overall simplicity of the product, and the product is not attractive.

In order to overcome the above problems, the closing door 340 of the present embodiment adopts a mode of pushing the closing door from inside to outside, when the display screen assembly 100 is extended, the second slider 122 slides upwards, so as to release the limitation of the closing control block 351, and the closing door 340 is turned downwards to open under the action of gravity; when the display screen assembly 100 is retracted, the second slider 122 slides to a position close to the retraction limit, the closing control block 351 drives the closing rocker 353 to push the closing door plate 340 to turn upwards to cover the top plate, and the closing control block 351 is limited to slide upwards, so that the closing door plate 340 is locked.

Further, an elastic element may be further disposed between the closing control block 351 and the second limiting member 322, where the elastic element provides an elastic force for the closing control block 351 to move away from the second limiting member 322, and when the display screen assembly 100 slides upwards, the second slider 122 releases the limitation on the closing control block 351, and the closing control block 351 slides upwards under the action of the elastic force to drive the closing door plate 340 to turn downwards and open, so as to ensure that the closing door plate 340 is kept in an open state, and prevent the closing door plate 340 from blocking and obstructing the display screen assembly 100 from extending.

In some preferred embodiments, the display screen lifter further comprises a driving control module 400, the driving control module 400 is fixed on the back plate of the body shell 300, the driving control module 400 is provided with a plug opening 410, the driving control module 400 is electrically connected with the angle driving device 133, the lifting driving device 210, the first electric lock, the second electric lock and the door plate closing driving device through the plug opening 410, and the driving control module 400 controls the opening and closing of the angle driving device 133, the lifting driving device 210, the first electric lock and the second electric lock to realize automatic control of the display screen lifter. Further, an access hole is formed at the connection between the back plate of the housing 300 and the driving control module 400, and the access hole is covered by the access door plate. In the prior art, the driving components of the angle driving device 133, the lifting driving device 210, the first electric lock and the second electric lock are the most likely positions to fail, and because the components are distributed in the accommodating cavity, a great deal of inconvenience is brought to maintenance work, and for this embodiment, the electric driving part is integrated into a pluggable replaceable module, which is convenient for later maintenance, and the like.

In other embodiments, a control component can be further provided, and intelligent control is realized by the control component; the control assembly comprises a control console and a PCB board, and the control console can be in the form of terminal software or a remote controller and the like and is used for outputting control signals; the PCB board is provided with control system and signal receiving device, and the PCB board is connected with drive control module 400, receives the control signal by the control panel transmission through the PCB board, and control signal carries out the control to the motor of each subassembly of lift after control system carries out data processing, realizes the automation mechanized operation of display screen lift. Although only certain elements and embodiments of the present application have been illustrated and described, many modifications and changes (e.g., variations in size, dimensions, structure, shape and proportions of the various elements, mounting arrangements, use of materials, colors, orientations, etc.) may be made by those skilled in the art without materially departing from the scope and spirit of the application in the claims.

Finally, it should be noted that: the above embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the scope of the present utility model, and any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims (10)

1. A light and thin waterproof display screen lifter is characterized by comprising a display screen assembly, a machine body shell and a lifting mechanism; the machine body shell is provided with a back plate, and a containing cavity is formed in the machine body shell; the accommodating cavity is used for accommodating the display screen assembly and the lifting mechanism;

The lifting mechanism comprises a chain, a lifting driving device and a lifting transmission device; the chain is connected with the display screen assembly; the lifting driving device comprises a lifting motor and a waterproof structure, wherein the lifting motor is provided with an output shaft, and the waterproof structure is used for preventing liquid from invading the lifting motor;

The output shaft of the lifting motor is arranged in parallel with the backboard; the lifting transmission device comprises a lifting driving wheel and a lifting driven wheel; the outer peripheral surface of the lifting driven wheel is provided with a first meshing tooth, the first meshing tooth is meshed with an inner hole of the chain, and the end surface of the lifting driven wheel is provided with a first matching part; the lifting driving wheel is arranged on an output shaft of the lifting motor device, and a second matching part is arranged on the lifting driving wheel; the first matching part is matched with the second matching part;

And the lifting driving device is powered, and torque is transmitted to the lifting driven wheel through the cooperation of the first cooperation part and the second cooperation part, so that the first meshing teeth and the chain mesh to pull the display screen assembly to extend or retract into the accommodating cavity.

2. The light and thin waterproof display screen lifter according to claim 1, wherein the waterproof structure comprises a lifting motor fixing frame, the lifting motor fixing frame fixes the lifting motor on the back plate, a sealed waterproof space is formed inside the lifting motor fixing frame, and the lifting motor is arranged in the waterproof space.

3. The light and thin waterproof display lifter according to claim 2, wherein the waterproof structure further comprises a flow guiding structure, and the flow guiding structure is disposed above the gravity direction of the lifting motor and is used for blocking and guiding liquid.

4. The light and thin waterproof display screen lifter according to claim 1, wherein the first matching portion is a plurality of protruding blocks which are annularly and uniformly distributed on the end face of the lifting driven wheel; the second matching parts are a plurality of grooves formed on the outer peripheral surface of the lifting driving wheel, and the number of the protruding blocks is consistent with that of the grooves; the lug is cylindrical, the lug end is provided with the buffer surface, the buffer surface is the conical surface.

5. The lightweight, waterproof display screen elevator of claim 1, wherein the display screen assembly comprises a display screen body and an elevator drive frame connected to each other; the lifting transmission frame is connected with the chain so as to drive the display screen body to extend out of or retract into the accommodating cavity.

6. The light and thin waterproof display screen lifter according to claim 5, wherein a first sliding block is arranged on one side, close to the back plate, of the lifting transmission frame, a first guide rail is arranged at a corresponding position of the back plate, the direction of the first guide rail is consistent with the direction of the display screen body extending out of or retracting into the accommodating cavity, and the first sliding block is in sliding connection with the first guide rail.

7. The lightweight and thin waterproof display elevator of claim 6, wherein the housing further comprises two oppositely disposed side plates; the side plate is provided with a second sliding rail, and the direction of the second sliding rail is consistent with the direction of the display screen body extending out of or retracting back into the accommodating cavity; the side face of the lifting transmission frame is provided with a second sliding block, and the second sliding block is in sliding connection with the second sliding rail.

8. The light and thin waterproof display screen lifter according to claim 7, wherein two ends of the second sliding rail are respectively provided with a first limiting piece and a second limiting piece; when the display screen body reaches the extending limit position, the top of the second sliding block is propped against the first limiting piece; when the display screen body reaches the retraction limit position, the bottom of the second sliding block is propped against the second limiting piece.

9. The lightweight and lightweight waterproof display screen elevator of claim 8, wherein the second slider is provided with a locking mechanism that locks the lifting drive frame in either an extended limit or a retracted limit.

10. The lightweight and thin waterproof display elevator of claim 1, wherein the housing has a top plate, and a closure door panel is disposed on the top plate, and the closure door panel can be opened or closed to the top plate; when the display screen component stretches out of the accommodating cavity, the closed door plate is in an open state, and when the display screen component retracts back into the accommodating cavity, the closed door plate is in a covering state.