CN112205754A

CN112205754A - Adjustable desk

Info

Publication number: CN112205754A
Application number: CN202011359042.6A
Authority: CN
Inventors: 常秀霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-01-12

Abstract

The invention provides an adjustable desk, which better solves the problems that the angle of a display cannot be accurately adjusted and a cover plate cannot be automatically opened in the conventional multifunctional teacher desk.

Description

Adjustable desk

Technical Field

The invention relates to the technical field of educational appliances, in particular to an adjustable desk.

Background

Along with the development of science, the teacher's desk is gradually diversified, and now in schools, more schools choose to use the multifunctional teacher's desk; the multifunctional teacher desk is designed by completely requiring the standard of a daily teacher desk as the teacher desk, adopts the principle of human engineering, meets the teaching requirement of teachers, has the function of a common teacher desk, is integrated with a computer inside, and is provided with a display on the desktop, so that teachers can operate conveniently and safely in the application process;

however, the conventional multifunctional teacher desk still has some problems, the teacher desk is usually locked by a lock, and is unlocked by a key when being used, and a cover plate is manually pushed, so that a display is displayed in front of a teacher, and most of the displays of the multifunctional teacher desk are fixed on the teacher desk, so that the displays can only be fixed at one angle, therefore, the teacher can only look at the screen with a low head, and the neck of the teacher can be damaged; therefore, the device which can independently open the cover plate and adjust the angle of the display according to the requirement is important.

Disclosure of Invention

Aiming at the situation, the invention provides the adjustable desk to overcome the defects of the prior art, and the adjustable desk better solves the problems that the angle of the display cannot be accurately adjusted and the cover plate cannot be automatically opened in the conventional multifunctional teacher desk, so that the multifunctional teacher desk is more convenient to use, and the burden of teachers when using the multifunctional teacher desk is reduced.

The specific technical scheme is as follows:

an adjustable desk comprises a desk body and is characterized in that the desk body is rotatably provided with a rotating frame and is provided with a second bevel gear and a third bevel gear which rotate coaxially with the rotating frame, the second bevel gear is meshed with a first bevel gear, the first bevel gear is connected with a cover plate opening and closing device through a power transmission mechanism, the cover plate opening and closing device is driven by a motor, the third bevel gear is meshed with a fourth bevel gear, the fourth bevel gear is connected with a worm through belt transmission, the worm is transversely and rotatably arranged on the desk body, the worm is meshed with a worm gear, a worm gear sleeve is inherently and longitudinally rotates a first lead screw arranged on the desk body, the first lead screw is in threaded fit with a first lead screw nut, a first supporting rod is rotatably arranged on the first lead screw nut, the other end of the first supporting rod is rotatably connected with one side of the vertical surface of the rotating frame, the inner wall of the rotating frame is rotatably provided with a display, and the display is, the angle adjusting device satisfies: the display can be adjusted to a proper angle and kept stable.

Preferably, apron switching device includes that lateral sliding installs the horizontal one end of sliding cover and sliding cover on the table body and is equipped with the hasp, the table body is equipped with protector and protector that are connected with the hasp and satisfies: the motor is started when the protection device is opened, the sliding cover plate is far away from one end of the lock catch and is rotatably installed with a second support rod, the other end of the second support rod is rotatably connected with a second lead screw nut, the second lead screw nut is in threaded fit with a second lead screw, the second lead screw is vertically rotatably installed on the table body, and the second lead screw is driven by the motor.

Preferably, the power transmission mechanism comprises a helical gear which is fixedly arranged on one side of the sliding cover plate, provided with a lock catch, of the end of the sliding cover plate, which is longitudinally close to the first bevel gear, and the helical gear is meshed with the helical gear, the helical gear is rotatably arranged on the table body, the helical gear coaxially rotates to form a first belt wheel, the first belt wheel is in rolling fit with the first belt, the other end of the first belt wheel is in rolling fit with a second belt wheel, and the second belt wheel and the first bevel gear are coaxially rotatably arranged on the table body.

Preferably, protector includes that half gear and half gear of rotation installation on the table body deviate from table body one side and be equipped with the dysmorphism hole, the dysmorphism hole satisfies: through the half gear of dysmorphism hole drive rotation, the table body lateral sliding installs rack and deviates from slip apron one end through first spring and table body coupling, the rack is rotated towards the vertical upper end in slip apron one side and is installed two connecting rods and rotate and be connected with the wedge, the wedge is through second spring and the vertical sliding fit of table body.

Preferably, the belt transmission comprises a third belt wheel which coaxially rotates with the fourth helical gear, the third belt wheel is in rolling fit with a second belt, the other end of the second belt is in rolling fit with a fourth belt wheel, and the fourth belt wheel is fixedly sleeved at one transverse end of the worm.

Preferably, the angle adjusting device comprises a ratchet wheel fixedly sleeved on the inner side wall of the rotating frame, the ratchet wheel is connected with a pawl, and the pawl and the ratchet wheel are matched to meet the following requirements: the rotation angle of the display screen can be adjusted and kept stable, the pawl is provided with two rectangular bosses at intervals, one side, away from the ratchet wheel, of the boss close to the ratchet wheel is connected with the display screen through a third spring, and the boss far away from the ratchet wheel is fixedly connected with the display screen.

Preferably, fixed mounting has two fore-and-aft hollow poles and two hollow poles slidable mounting have the telescopic link on the table body, the telescopic link stretches out hollow pole one end and rotates and install the square stool.

(1) The invention better solves the problem that the angle of the display cannot be accurately adjusted, the angle adjusting device is arranged, and the display is rotated to a proper angle by controlling the relative position of the pawl and the ratchet wheel, so that a teacher can more conveniently watch a screen, and the damage to the neck is greatly reduced;

(2) according to the invention, the transverse sliding of the sliding cover plate is connected with the rotation of the rotating frame through the power transmission device, so that when the sliding cover plate is opened, the rotating frame can drive the display to rotate for a certain angle, the rotating frame is not required to be lifted up manually, time and labor are saved, and the use by teachers is more convenient.

Drawings

FIG. 1 is a close-up schematic of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic view of the scraper blade of the present invention attached to a rotating drum;

FIG. 4 is a schematic perspective view of the present invention;

FIG. 5 is a partial schematic view of the invention at F;

FIG. 6 is a partial schematic view of the present invention at D;

FIG. 7 is a partial schematic view of the invention at G;

FIG. 8 is a partial schematic view of the invention at B;

FIG. 9 is a partial schematic view of the invention at C;

FIG. 10 is a partial schematic view of the invention at E;

FIG. 11 is a partial schematic view of the invention at A;

FIG. 12 is a schematic view of the sliding cover and the sliding plate of the present invention.

In the figure: the table comprises a table body 1, a rotating frame 2, a second bevel gear 3, a first bevel gear 4, a motor 5, a third bevel gear 6, a fourth bevel gear 7, a worm 8, a worm wheel 9, a first lead screw 10, a first lead screw nut 11, a first support rod 12, a display 13, a sliding cover plate 14, a lock catch 15, a second support rod 16, a second lead screw nut 17, a second lead screw 18, a helical rack 19, a helical gear 20, a first belt pulley 21, a first belt 22, a second belt pulley 23, a half gear 24, a profiled hole 26, a rack 27, a first spring 28, a connecting rod 30, a wedge block 31, a second spring 32, a third belt pulley 33, a second belt 34, a fourth belt pulley 35, a ratchet wheel 36, a pawl 37, a rectangular boss 38, a third spring 39, a hollow rod 40, a telescopic rod 41, a square stool 43, a rotating gear 44, a hook 45, an extension rod 46, a sliding plates 47 and a groove 48.

Detailed Description

The foregoing and other aspects, features and advantages of the invention will be apparent from the following more particular description of the embodiments of the invention, as illustrated in the accompanying drawings in which reference is made to figures 1 to 12. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

An adjustable desk comprises a desk body 1 and is characterized in that a rotating frame 2 is rotatably arranged on the desk body 1, the desk body 1 is provided with a second bevel gear 3 and a third bevel gear 6 which coaxially rotate with the rotating frame 2, the second bevel gear 3 is meshed with a first bevel gear 4, the first bevel gear 4 is connected with a cover plate opening and closing device through a power transmission mechanism, the cover plate opening and closing device is driven by a motor 5, the third bevel gear 6 is meshed with a fourth bevel gear 7, the fourth bevel gear 7 is connected with a worm 8 through belt transmission, the worm 8 is transversely rotatably arranged on the desk body 1, the worm 8 is meshed with a worm wheel 9, the worm wheel 9 is sleeved with a first lead screw 10 which is inherently and longitudinally rotatably arranged on the desk body 1, the first lead screw 10 is in threaded fit with a first lead screw nut 11, a first supporting rod 12 is rotatably arranged on the first lead screw nut 11, the other end of the first supporting rod is rotatably connected with one side, facing the desk body 1, of, 2 inner walls of rotation frame rotate and install display 13 and be connected with angle adjusting device, angle adjusting device satisfies: the display 13 may be adjusted to a suitable angle and held steady.

In the use of the embodiment, as shown in the attached drawing 1, when the teacher's desk is in an initial state, the teacher's desk is in a closed state, the desktop is flat, and the teacher's desk can be used as a traditional teacher's desk, and a plurality of grooves are further arranged on the upper end surface of the teacher's desk, so that small articles such as water cups and chalk boxes can be placed in the grooves 48, and the articles can be prevented from falling to the ground and being damaged accidentally, as shown in the attached drawing 4, when the teacher's desk is used, a motor 5 (the motor 5 is connected with an external power supply and is electrically connected with a microcontroller, the opening and closing of the motor 5 is controlled by the microcontroller) drives a cover plate opening and closing device to be opened, then a power transmission mechanism connected with the cover plate opening and closing device drives a first bevel gear 4 to rotate, the first bevel gear 4 drives a second bevel gear 3 to rotate, thereby driving the rotating frame 2 to rotate, referring to fig. 5, a third bevel gear 6 is also fixedly sleeved on one side of the rotating frame 2 which is transversely far away from the second bevel gear 3, while the rotating frame 2 rotates, the third bevel gear 6 drives a fourth bevel gear 7 to rotate, then the fourth bevel gear 7 drives a worm 8 which is transversely and rotatably installed on the table body 1 to rotate through belt transmission, referring to fig. 11, the worm 8 drives a worm wheel 9 to rotate, the worm wheel 9 is fixedly sleeved on a first lead screw 10 which is longitudinally and rotatably installed on the table body 1, so that the first lead screw 10 drives a first lead screw nut 11 which is in threaded fit with the first lead screw 10 to longitudinally move, the first lead screw nut 11 is in longitudinal sliding fit with the table body 1, the first lead screw nut 11 is rotatably installed with a first supporting rod 12, and the other end of the first supporting rod 12 is rotatably installed at one end of the rotating frame 2 which is far away from the, therefore, when the first lead screw nut 11 moves, the first supporting rod 12 can be slowly lifted, a supporting effect is achieved on the rotating frame 2, and the burden of the four bevel gears is reduced;

referring to fig. 3, an angle adjusting device is further arranged on the inner side of the rotating frame 2, and the angle of the display 13 can be adjusted within a certain range through the angle adjusting device, so that a teacher can check the screen conveniently, and the problem that the neck is damaged by the fact that the teacher always looks down to see the screen is avoided.

Embodiment 2, on the basis of embodiment 1, the cover opening and closing device includes that the horizontal slip cover 14 and the horizontal one end of slip cover 14 that transversely slide-mount on the table body 1 is equipped with hasp 15, the table body 1 is equipped with the protector and the protector that are connected with hasp 15 and satisfies: when the protection device is opened, the motor 5 is started, the sliding cover plate 14 is far away from one end of the lock catch 15, the second supporting rod 16 is installed in a rotating mode, the other end of the second supporting rod 16 is connected with a second lead screw nut 17 in a rotating mode, the second lead screw nut 17 is in threaded fit with a second lead screw 18, the second lead screw 18 is installed on the table body 1 in a vertical rotating mode, and the second lead screw 18 is driven by the motor 5.

In the embodiment, referring to fig. 4, when the table is used, the motor 5 is fixedly installed on the side wall of the table body 1, the output shaft of the motor 5 is fixedly connected with the second lead screw 18, the second lead screw 18 is in threaded fit with the second lead screw nut 17, the second lead screw nut 17 is rotatably connected with the second support rod 16, the second lead screw nut 17 is in vertical sliding fit with the table body 1, the other end of the second support rod 16 is rotatably connected with the extending part on one side of the sliding cover plate 14 in the transverse direction (so that the second support rod 16 is in an inclined state when in the initial position, the second support rod 16 is prevented from being vertical when in starting, and the transmission is in the dead point position), and the side of the table body 1 where the motor 5 is fixedly installed is further provided with a transverse rectangular sliding groove, so that the sliding cover plate 14 can only slide along the direction of the rectangular sliding groove, and the, when the motor 5 is started, the motor 5 drives the second lead screw nut 17 to vertically move, then the sliding cover plate 14 is dragged to transversely slide along the rectangular sliding groove by the second support rod 16, in addition, a limit switch (also called limit switch utilizes the collision of a mechanical motion part to make a contact of the limit switch act to switch on or switch off a control circuit, and a certain control purpose is achieved, generally, the switch is used for limiting the position or the stroke of mechanical motion, so that the motion machine automatically stops, reversely moves or automatically reciprocates according to a certain position or stroke, and the limit switch is electrically connected with the microcontroller, when the sliding cover plate 14 transversely slides until the limit switch touches the side wall of the table body 1, the limit switch transmits a new number to the microcontroller, and then the microcontroller controls the motor 5 to be switched off, this indicates that the sliding cover 14 and the rotating frame 2 both reach the final position and can be kept stable at this position;

a lock catch 15 is arranged on one side, provided with a limit switch, of the sliding cover plate 14, and the lock catch 15 is connected with a protection device, so that the sliding cover plate 14 is prevented from being easily opened by the protection device, and the multimedia is prevented from being damaged due to random use.

Embodiment 3 is based on embodiment 1, the power transmission mechanism includes a helical rack 19 fixedly installed on one end of the sliding cover plate 14, where the lock catch 15 is provided, of the end longitudinally close to the first bevel gear 4, and the helical rack 19 is engaged with a helical gear 20, the helical gear 20 is rotatably installed on the table body 1, the helical gear 20 is coaxially rotated with a first pulley 21, the first pulley 21 is in rolling fit with a first belt 22, the other end of the first belt 22 is in rolling fit with a second pulley 23, and the second pulley 23 is coaxially rotated with the first bevel gear 4 and installed on the table body 1.

In the use of this embodiment, referring to fig. 4, we fixedly mount a helical rack 19 and a helical rack 19 on one side of the sliding cover plate 14, which is longitudinally close to the lower end of one side of the first bevel gear 4 (the rack 27 is a special gear with teeth distributed on a strip-shaped body, the rack 27 is also divided into a straight rack 27 and a helical rack 27, which are respectively paired with a straight cylindrical gear and a helical cylindrical gear), referring to fig. 9, we rotatably mount a helical gear 20 matched with the helical rack 19 on the side wall of the table body 1, and further rotatably mount a first pulley 21 and the helical gear 20 on the side wall of the table body 1 coaxially, so that the first pulley 21 can rotate synchronously with the helical gear 20, the first pulley 21 is in rolling fit with a first belt 22, the other end of the first belt 22 is in rolling fit with a second pulley 23, the second pulley 23 is rotatably mounted on the table body 1 coaxially with the first bevel gear 4, therefore, the transmission of the helical rack 19 and the helical gear 20 can drive the first gear to rotate through the first belt 22, namely: when the sliding cover plate 14 slides transversely to approach the side wall of the table body 1, the helical rack 19 is meshed with the helical gear 20, and then when the sliding cover plate 14 continues to move, the helical rack 19 drives the helical gear 20 to rotate, so that the first belt wheel 21 rotates, and then the power is transmitted to the second belt wheel 23 through the first belt 22, so as to drive the first bevel gear 4 to rotate, and further the rotating frame 2 is lifted.

Embodiment 4, on the basis of embodiment 2, the protection device includes a half gear rotatably mounted on the table body 1, the protection device includes a half gear 24 rotatably mounted on the table body 1, and a side of the half gear 24 facing away from the table body 1 is provided with a special-shaped hole 26, where the special-shaped hole 26 satisfies: through the rotation of dysmorphism hole 26 drive semi-gear 24, the table body 1 lateral sliding installs rack 27 and deviates from the 14 one end of sliding cover through first spring 28 and the table body 1 is connected, rack 27 is rotated towards the vertical upper end in sliding cover 14 one side and is installed two connecting rods 30 and rotate and be connected with wedge 31, wedge 31 is through second spring 32 and the vertical sliding fit of table body 1.

In the use of this embodiment, referring to fig. 8, we have a cavity on the table body 1, and a half gear 24 is rotatably installed in the cavity, a shaped hole 26 is formed on the half gear 24 (the half gear 24 can only be driven to rotate by a shaped piece corresponding to the shaped hole 26, and we have a blocking rod on one side of the tooth away from the half gear 24, so that the half gear 24 cannot rotate in a whole circle), and we have a rack 27 transversely slidably installed on the sidewall of the cavity, and one end of the rack 27 transversely far away from the sliding cover plate 14 is connected to the table body 1 through a first spring 28, so that a force in the direction of a spring contraction force is given to the rack 27, so that the rack 27 cannot easily move without being forced, one end of the rack 27 far away from the first spring 28 is rotatably installed with two connecting rods 30, and the other end of the two connecting rods 30 is rotatably connected with a wedge block 31, we have a rectangular hole on, the wedge block 31 can slide in the longitudinal direction of the rectangular hole, in addition, the two wedge blocks 31 are connected with the longitudinal side wall of the rectangular hole by using a second spring 32, when the spring extends normally, the tops of the two wedge blocks 31 are contacted, an induction column is arranged on the side wall of the spring arranged on one wedge block 31, a round hole corresponding to the induction column is arranged in the corresponding rectangular hole, and a pressure sensor is arranged in the round hole (the pressure sensor is a device or a device which can sense pressure signals and can convert the pressure signals into usable output electric signals according to a certain rule, and the pressure sensor is electrically connected with the microcontroller, so that the pressure sensor can transmit the sensed signals to the microcontroller, and then the microcontroller controls the opening and closing of the motor 5 through the signals);

when the multimedia is used, the multimedia is in a closed state, the lock catch 15 is in a closed ring formed by the wedge blocks 31, when the multimedia is required to be used, the half gear 24 is driven by a special-shaped piece to rotate to be meshed with the rack 27, so that the rack 27 can transversely slide, then the wedge blocks 31 longitudinally slide under the traction of the connecting rods 30 until the half gear 24 touches the blocking rod, the induction column is inserted into the round hole and provides a force for the pressure sensor, then the microcontroller controls the motor 5 to start and drive the second lead screw 18 to rotate, then the sliding cover plate 14 transversely slides under the traction of the second supporting rod 16 until the limit switch touches the side wall of the table body 1, the motor 5 is closed, the rotating frame 2 rotates for a certain angle and keeps stable, after the multimedia is used, the half gear 24 is driven by the special-shaped piece, so that the induction column touches the pressure sensor, and then the motor 5 reversely rotates, so that each mechanism restores to the initial position, when the lock catch 15 contacts the wedge-shaped block 31 and enters the closed ring formed by the two wedge-shaped blocks 31, the wedge-shaped block 31 is stressed again to slide longitudinally, so that the induction column touches the pressure sensor again, then the motor 5 is closed, and the teacher desk is in a closed state again at the moment.

Embodiment 5 is based on embodiment 1, the belt transmission includes a third pulley 33 rotating coaxially with the fourth helical gear 20, and a second belt 34 is fitted on the third pulley 33 in a rolling manner, and a fourth pulley 35 is fitted on the other end of the second belt 34 in a rolling manner, and the fourth pulley 35 is fixed on one end of the worm 8 in the transverse direction.

When the embodiment is used, referring to fig. 5, the belt transmission comprises a third belt wheel 33 rotating coaxially with the fourth bevel gear 7, a second belt 34 is in rolling fit with the third belt wheel 33, a fourth belt wheel 35 is in rolling fit with the other end of the second belt 34, and the fourth belt wheel 35 is fixedly sleeved on the worm 8, so that the rotation of the rotating frame 2 can be transmitted to the worm 8 through the belt transmission, the worm 8 can drive the worm wheel 9 to rotate and further drive the first lead screw 10 to rotate, the first supporting rod 12 can provide an auxiliary supporting force for the rotating frame 2, and the abrasion of the gears is reduced.

Embodiment 6, on the basis of embodiment 1, the angle adjusting device includes a ratchet wheel 36 fixed on the inner side wall of the rotating frame 2, and the ratchet wheel 36 is connected with a pawl 37, and the pawl 37 and the ratchet wheel 36 are matched to satisfy: the rotation angle of the display screen can be adjusted and kept stable, the pawl 37 is provided with two rectangular bosses 38 at intervals, one side of the boss close to the ratchet wheel 36, which is far away from the ratchet wheel 36, is connected with the display screen through a third spring 39, and the boss far away from the ratchet wheel 36 is fixedly connected with the display screen.

In this embodiment, referring to fig. 6, a ratchet wheel 36 is fixed on the inner side wall of the rotating frame 2, and a pawl 37 is fitted on the teeth of the ratchet wheel 36 (one end of the pawl 37 is provided with an inclined surface, when the inclined surface contacts with any tooth of the ratchet wheel 36, the tip abuts against the root of the inclined tooth, so that the display 13 can be stably maintained at the angle, and the display 13 is prevented from reversing, two rectangular bosses 38 are arranged on the pawl 37 at intervals along the axial direction, the rectangular boss 38 close to the ratchet wheel 36 is connected with the extending part of the display 13 through a third spring 39, so that the third spring 39 gives a force to the pawl 37 which always tends to the ratchet wheel 36, and the rectangular boss 38 far from the ratchet wheel 36 is fixed on the extending part of the display 13, so that the limiting is prevented from being failed due to rotating, when we adjust the angle of the display 13, the pawl 37 can rotate relative to the ratchet wheel 36 only, until the display 13 is adjusted to a proper angle, when we retract the display 13, we need to manually pull up the pawl 37, at this time, the inclined surface of the pawl 37 is disengaged from the ratchet wheel 36, we can push the display 13 to reset, and then we release the pawl 37, and then the pawl 37 will abut against the ratchet wheel 36 again to keep the display 13 stable.

Embodiment 7 is based on embodiment 1, two longitudinal hollow rods 40 are fixedly installed on the table body 1, an expansion rod 41 is slidably installed in the two hollow rods 40, and a square stool 43 is rotatably installed at one end of the expansion rod 41 extending out of the hollow rods 40.

When the desk is used, referring to the attached drawing 4, two hollow rods 40 are fixedly arranged on the longitudinal inner side wall of the desk body 1, telescopic rods 41 are slidably arranged in the two hollow rods 40, a square stool 43 is rotatably arranged at one end, extending out of the hollow rods 40, of each telescopic rod 41, when a teacher tired, the square stool 43 can be pulled out of the desk body 1, the desk body 1 is not retracted again when the teacher is not in use, and therefore the problem that the teacher is hindered when writing on a lecture platform and walking is caused after the teacher is placed on the lecture platform is avoided.

Preferably, we can also set up the mounting groove (can install other multimedia teaching aids in the mounting groove, make the lectern function abundanter) and horizontal slip has slide 47 on the spout at another part of the table body 1, we are equipped with the rectangular plate and the rectangular plate lower extreme is equipped with extension rod 46 at slide 47 towards sliding cover 14 one side, refer to fig. 12, we still install rotating gear 44 and be equipped with the couple 45 that corresponds with extension rod 46 in the cavity internal rotation, when we counter-rotate half gear 24 to with rotating gear 44 meshing, rotating gear 44 rotates, couple 45 will break away from with extension rod 46, slide 47 just can be opened, other multimedia teaching aids of mounting groove just can be used.

The invention better solves the problem that the angle of the display 13 cannot be accurately adjusted, and the angle adjusting device is arranged, so that the display 13 rotates to a proper angle by controlling the relative position of the pawl 37 and the ratchet wheel 36, thereby enabling teachers to more conveniently see screens and greatly reducing the damage to necks;

according to the invention, the transverse sliding of the sliding cover plate 14 is connected with the rotation of the rotating frame 2 through the power transmission device, so that when the sliding cover plate 14 is opened, the rotating frame 2 can drive the display 13 to rotate for a certain angle, the rotating frame 2 is not required to be lifted up manually, time and labor are saved, and the use by teachers is more convenient.

The above description is only for the purpose of illustrating the present invention, and it should be understood that the present invention is not limited to the above embodiments, and various modifications conforming to the spirit of the present invention are within the scope of the present invention.

Claims

1. The utility model provides an adjustable desk, includes the table body (1), its characterized in that, the table body (1) is rotated and is installed and rotate frame (2) and table body (1) and be equipped with and rotate frame (2) coaxial rotation's second bevel gear (3), third bevel gear (6), second bevel gear (3) meshing has first bevel gear (4) and first bevel gear (4) to be connected with apron switching device through power transmission mechanism, apron switching device is by motor (5) drive, third bevel gear (6) meshing has fourth bevel gear (7) and fourth bevel gear (7) to be connected with worm (8) through the belt transmission, worm (8) transversely rotate and install on table body (1), worm (8) meshing has worm wheel (9) and worm wheel (9) cover inherent longitudinal rotation to install first lead screw (10) on table body (1), first lead screw (10) screw-thread fit has first lead screw nut (11) and rotates on first lead screw nut (11) Install first vaulting pole (12), the first vaulting pole other end rotates towards table body (1) one side with rotating frame (2) vertical face and is connected, it installs display (13) and is connected with angle adjusting device to rotate frame (2) inner wall rotation, angle adjusting device satisfies: the display (13) can be adjusted to a suitable angle and kept stable.

2. An adjustable desk as claimed in claim 1, wherein the cover opening and closing means comprises a sliding cover (14) mounted on the desk body (1) in a sliding manner in a transverse direction, and a lock catch (15) is provided at one transverse end of the sliding cover (14), the desk body (1) is provided with a protection device connected with the lock catch (15), and the protection device satisfies the following conditions: motor (5) is started when the protector is opened, slide cover plate (14) are kept away from hasp (15) one end and are rotated and install second bracing piece (16) and second bracing piece (16) other end and rotate and be connected with second lead screw nut (17), second lead screw nut (17) screw-thread fit has second lead screw (18) and vertical rotation of second lead screw (18) to install on the table body (1), second lead screw (18) are by motor (5) drive.

3. An adjustable desk according to claim 1, wherein the power transmission mechanism comprises a helical rack (19) fixedly mounted on the sliding cover plate (14) and provided with a lock catch (15) at one end longitudinally close to one side of the first bevel gear (4), the helical rack (19) is engaged with a helical gear (20), the helical gear (20) is rotatably mounted on the desk body (1) and the helical gear (20) coaxially rotates with a first pulley (21), the first pulley (21) is in rolling fit with a first belt (22) and the other end of the first belt (22) is in rolling fit with a second pulley (23), and the second pulley (23) and the first bevel gear (4) are coaxially rotatably mounted on the desk body (1).

4. An adjustable desk according to claim 2, wherein the protecting means comprises a half-gear (24) rotatably mounted on the desk body (1) and a shaped hole (26) is provided on the side of the half-gear (24) facing away from the desk body (1), said shaped hole (26) satisfying: drive half gear (24) through dysmorphism hole (26) and rotate, the table body (1) lateral sliding installs rack (27) and deviates from sliding cover board (14) one end and is connected with the table body (1) through first spring (28), rack (27) rotate towards the vertical upper end in sliding cover board (14) one side and install two connecting rods (30) and rotate and be connected with wedge (31), wedge (31) are through second spring (32) and the vertical sliding fit of the table body (1).

5. An adjustable desk according to claim 1, wherein the belt drive comprises a third belt pulley (33) rotating coaxially with the fourth bevel gear (20) and the third belt pulley (33) is in rolling engagement with a second belt (34), the other end of the second belt (34) is in rolling engagement with a fourth belt pulley (35) and the fourth belt pulley (35) is fixed at one transverse end of the worm (8).

6. An adjustable desk as claimed in claim 1, wherein the angle adjusting means comprises a ratchet wheel (36) fixed on the inner side wall of the rotating frame (2) and a pawl (37) is connected to the ratchet wheel (36), the pawl (37) and the ratchet wheel (36) are matched to satisfy the following conditions: the rotation angle of the display screen can be adjusted and kept stable, two rectangular bosses (38) are arranged at intervals on the pawl (37), one side, away from the ratchet wheel (36), of the boss close to the ratchet wheel (36) is connected with the display screen through a third spring (39), and the boss far away from the ratchet wheel (36) is fixedly connected with the display screen.

7. An adjustable desk as claimed in claim 1, wherein two longitudinal hollow bars (40) are fixedly installed on the desk body (1), and telescopic rods (41) are slidably installed in the two hollow bars (40), and a square stool (43) is rotatably installed at one end of each telescopic rod (41) extending out of the hollow bars (40).