CN211510873U

CN211510873U - Electric lifting table

Info

Publication number: CN211510873U
Application number: CN202020017326.6U
Authority: CN
Inventors: 罗成一; 余斌; 杨新华
Original assignee: SHANGHAI THINKWISE INDUSTRIAL CO LTD; Fujian Jiuzhao Intelligent Technology Co ltd
Current assignee: SHANGHAI THINKWISE INDUSTRIAL CO LTD; Fujian Jiuzhao Intelligent Technology Co ltd
Priority date: 2020-01-06
Filing date: 2020-01-06
Publication date: 2020-09-18
Anticipated expiration: 2030-01-06

Abstract

The utility model relates to an electric lifting table, which comprises a base, a table top, two supporting arms which are hinged in a crossed way and a motor assembly; the desktop is supported on the base by the two supporting arms and is driven to lift by the motor assembly; wherein: the two ends of the screw rod are positioned in the short sliding groove of the tabletop through the cross shaft, the cross shaft is provided with the inclined supporting arm, the lower end part of the inclined supporting arm can be abutted against the stop block arranged on the base, the screw rod is driven by the motor assembly to move at the beginning of lifting of the tabletop, so that the inclined supporting arm is supported, and then the two crossed supporting arms are switched to drive the tabletop to continuously lift. The utility model discloses ingenious drive stroke that utilizes freely switches bracing arm and support arm, seamless continuous drive desktop lifting or descending action.

Description

Electric lifting table

The technical field is as follows:

the utility model belongs to the office furniture field, in particular to electric lifting table, especially can superpose on fixed desktop or object, as height-adjusting's lift table.

Background art:

with the advancement of science and technology, computers occupy various fields and cannot be used even in a leisure environment. Due to various use environments, in order to be compatible with different use conditions and meet more humanized operation and observation angles, a plurality of demands are created by manufacturers. Such as:

patent application No. 201720358005.0 discloses an electric noiseless tabletop lifting device, which comprises a supporting mechanism, wherein the supporting mechanism comprises a base, two side ends of the rear part of the base are respectively provided with a bracket, and the side ends of the brackets are provided with a track; the bearing mechanism comprises a tabletop, and a motor switch is arranged on the tabletop; the movable mechanism comprises a left-right symmetrically arranged support group, the support group consists of a front inclined support rod and a rear inclined support rod, the front inclined support rod and the rear inclined support rod are in a crossed and movable connection to form an X-shaped structure, the bottom end of the rear inclined support rod slides in a track, a connecting rod is arranged between the upper ends of the left-right arranged front inclined support rods, and a shaft rod is arranged between the upper ends of the left-right arranged rear inclined support rods; and the electric driving mechanism is arranged between the shaft lever and the connecting rod and is connected with the motor switch. This structure utilizes motor and actuating lever combination, also electric putter or motor and double threaded screw drive, realizes the change regulation of X cross support pole contained angle and height, nevertheless because of X cross support pole when the desktop extreme lower position, preceding, back bracing piece are close to parallelly, not only blocks easily, needs great pulling force moreover, keeps two bracing pieces to have certain initial angle during consequently the design, and this also leads to the unable thin of doing of lift table.

The following steps are repeated: the patent application No. 201821378743.2 is based on the same principle, but the operation directions of the cross type lifting arm are different, the former is the front-back direction operation, the latter is the left-right direction operation, and the other similar, the defect of too thick thickness is existed.

How to improve present defect becomes the utility model discloses the direction of research.

The invention content is as follows:

the utility model aims at designing a drive stroke of motor assembly, two sets of mechanisms of drive are seamless to be switched over, and the electric lift table that originally is followed the two alternately support arms of conversion drive and continues rising is by bracing arm lifting desktop.

The utility model discloses technical scheme realizes like this: an electric lifting table comprises a base, a table top, two supporting arms and a motor assembly, wherein the two supporting arms are hinged in a crossed mode; the desktop is supported on the base by the two supporting arms, one end of each supporting arm is a fixed end and is correspondingly hinged on the base and the desktop, the other end of each supporting arm is a movable end and is positioned in a corresponding long sliding groove of the base and the desktop in a sliding mode, the motor assembly comprises a motor component and a screw rod driven by the motor component to rotate, the end portions of the motor component and the screw rod are correspondingly connected to the fixed end and the movable end of each supporting arm, and the motor assembly drives the desktop to move up and down; the method is characterized in that: two ends of the screw rod are positioned in a short sliding chute of the tabletop or the base through a cross shaft, an inclined supporting arm is positioned on the cross shaft, and the lower end part of the inclined supporting arm can abut against a stop block arranged on the base or the tabletop; and a nut seat with a traction arm is screwed on the screw rod, and the traction arm is connected with the movable end of the supporting arm.

The motor assembly is locked on the desktop or the base, an output shaft of the motor assembly is coupled with the screw through a spline sleeve, and the screw is allowed to move axially while power is transmitted.

The base is a rectangular frame, long sliding grooves are formed in the front frame and the rear frame, and stop blocks are arranged on the left side and the right side of the base respectively; the desktop is of a plane structure, the motor assembly is installed on the back of the desktop, and the long sliding groove and the short sliding groove are fixedly locked on the back of the desktop; the front surface of the desktop is provided with a key area for controlling the motor assembly, and the desktop can be covered on the frame of the base.

The front side and the rear side of the desktop and the base are respectively provided with a pair of supporting arms which are hinged in a crossed manner, the two pairs of supporting arms act synchronously, the downward movable ends of the two supporting arms are connected through a long shaft, and the two ends of the long shaft are respectively pivoted in the long sliding grooves of the base; the upward movable ends of the two support arms are pivoted in a pair of long chutes locked on the back of the table top through respective short shafts, and the short shafts are also pivoted with traction arms.

The motor assembly is arranged in the middle between the front and the back of the desktop, a pair of short chutes and a pair of inclined supporting arms are respectively arranged on two sides of two ends of the screw rod, the two ends of the screw rod are pivoted in the two short chutes, the two ends of the screw rod respectively penetrate through the central holes of the corresponding cross shafts, and the two cross shafts are crossed in a cross manner and restrict the movement of the cross shafts along the axial direction of the screw rod; a pair of short chutes are respectively arranged on two sides of one end of the motor component and are pivoted with a cross shaft, a linkage plate is arranged between the cross shaft on the short chute and the cross shaft at the end part of the screw rod to synchronize the two cross shafts on the same end, and inclined support arms are pivoted on the cross shafts on the two sides of the motor component; a pair of inclined supporting arms far away from one end of the motor component are directly pivoted on the transverse shaft and positioned on two sides of the screw rod, and the table top is jacked up by the four inclined supporting arms on the left side and the right side together.

The front frame and the rear frame of the base are formed by cutting off sectional materials, the end parts of the left side and the right side are plastic parts, and the plastic parts are locked on the two end parts of the frames through screws to form the whole base.

The utility model discloses an ingenious utilization drive stroke, the desktop is lifted by the bracing arm initially to make two alternately articulated support arms cross contained angle diminish, after drive moment grow, freely switch over to drive two alternately support arms and continue rising again, both reduced the atress of support arm initial stage, can select the motor of less power again; therefore, the supporting arms can be made of thinner and light aluminum alloy, and the maximum included angle of the two crossed supporting arms can be close to 180 degrees in design, so that the desktop can be attached to the base and is thinner and lighter as a whole after being folded.

Description of the drawings:

the present invention will be further explained with reference to the following specific drawings:

FIG. 1 is a schematic view of an electric lifting table after being folded

FIG. 2 is a schematic diagram of the electric lifting table after being lifted

FIG. 3 is a schematic view of the elevation angle of the electric lift table

FIG. 4 is an exploded view of the electric lifting table

Wherein

1-desktop 11-key area 2-base 21-frame

22-plastic part 23-hinged seat 24-stop block 3-supporting arm

31-long shaft 32-short shaft 4-motor assembly 41-motor component

411-output shaft 42-screw 43-nut seat 44-cross shaft

441-center hole 45-traction arm 46-linkage plate 5-long sliding chute

6-short chute 7-inclined strut arm

The specific implementation mode is as follows:

referring to fig. 1 to 4, the electric lifting table includes a table top 1, a base 2, a support arm 3 and a motor assembly 4; the desktop 1 is supported on the base 2 by two pairs of cross hinges at the support arms 3, one end of the two cross support arms 3 is a fixed end and correspondingly hinged on the base 2 and the desktop 1, the other end of the two cross support arms is a movable end and is positioned in the corresponding long sliding grooves 5 of the base 2 and the desktop 1 in a sliding mode, and the support arms 3 realize the height adjustment of the desktop 1 by means of the position change of the movable ends in the long sliding grooves 5.

The base 2 is a rectangular frame, the front and rear frames 21 are formed by cutting off sectional materials, the end parts of the left and right sides are plastic parts 22, and the plastic parts are locked on the two end parts of the frames 21 through screws to form the whole base 2. The long chutes 5 on the front and rear frames 21 of the base are directly formed when the section bar is stretched. When the plastic part 22 is used for manufacturing, a hinge seat 23 for supporting the fixed end of the arm and stop blocks 24 at the left side and the right side are formed.

The desktop 1 is of a plane structure, the motor assembly 4 is installed on the back of the desktop, the long sliding groove 5 and the short sliding groove 6 are further locked on the back of the desktop, the front of the desktop 1 is provided with a key area 11 for controlling the motor assembly, and the desktop 1 can be covered on a frame 21 of the base to form a whole.

More specifically, the front and back sides of the desktop 1 and the base 2 are respectively provided with a pair of supporting arms 3 which are hinged in a crossed manner, the two pairs of supporting arms act synchronously, the downward movable ends of the two supporting arms 3 are connected through a long shaft 31, and the two ends of the long shaft 31 are respectively pivoted in the long sliding grooves 5 of the base; the upward movable ends of the two support arms 3 are pivoted in a pair of long chutes 5 locked on the back of the table top through respective short shafts 32, and the short shafts 32 are also pivoted with a traction arm 45 to draw the movable ends of the support arms 3.

The motor assembly 4 comprises a motor component 41, a screw rod 42 and a nut seat 43; the motor component 41 is preferably a stepping motor, and can also adopt a combination of a common motor and a gearbox; the screw rod 42 is driven to rotate by the motor component, the end parts of the motor component 41 and the screw rod 42 are correspondingly connected to the fixed end and the movable end of the supporting arm 3, the change of the included angle between the two crossed hinged supporting arms 3 is driven, and the lifting adjustment of the desktop 1 is realized. The motor assembly 41 is locked on the table top 1, and the output shaft 411 of the motor assembly is coupled to the screw rod 42 through a spline sleeve, so that the screw rod 42 is allowed to move axially while power is transmitted.

Two ends of the screw rod 42 are positioned in the short sliding groove 6 at the back of the table top 1 through a transverse shaft 44, an inclined strut arm 7 is also positioned on the transverse shaft 44, and the lower end part of the inclined strut arm 7 can be abutted against a stop block 24 arranged on the base 2; the nut seat 43 is screwed on the screw rod 42 and fixed with the traction arm 45, and is connected with the movable end of the supporting arm 3 through the traction arm 45.

The lifting process of the table top is also a process of changing the driving torque and the gravity torque, the driving torque is small and the gravity torque is large at the initial lifting of the table top 1, and the initial action load is large for a motor with constant power, so that the initial lifting action is a difficulty in driving the crossed supporting arms. The motor component 41 drives the screw rod 42 to rotate, the nut seat 43 is stressed, at the moment, because the included angle between the two crossed supporting arms 3 is close to 180 degrees, the axial driving force of the screw rod 42 is close to parallel with the supporting arms 3, the driving moment is small, the movable end of the supporting arms 3 does not move, the reaction force forces the screw rod 42 to move along the axial direction, and drives the transverse shafts 44 at the two ends to move along the short sliding grooves 6; the lower end part of the inclined support arm 7 positioned on the transverse shaft is propped against the stop block 24, the initial moment of the inclined support arm 7 is large, and the inclined support arm is overturned by taking the lower end part as a fulcrum after being stressed to lift the desktop 1 together with the motor assembly 4; when the transverse shaft 44 moves to the end of the short chute 6 and the screw rod 42 cannot move, the driving force is completely applied to the nut seat 43, at this time, the table top 1 is lifted to a certain height, so that the included angle between the two crossed supporting arms 3 is reduced, the moment is increased, the movable end of the supporting arm 3 can be easily drawn to the fixed end side, and the table top is gradually lifted to the required height. And the free switching of the inclined strut arm 7 and the supporting arm 3 is one of the biggest characteristics of the structure.

Further, the motor assembly 4 is arranged at the middle position between the front and the back of the tabletop, a pair of short chutes 6 and a pair of inclined supporting arms 7 are respectively arranged on two sides of two ends of the screw rod 42, the two ends of the cross shaft 44 are pivoted in the two short chutes 6, two ends of the screw rod 42 respectively penetrate through corresponding cross shaft central holes 441, the two cross shafts are crossed in a cross way and restrict the movement of the cross shaft 44 along the axial direction of the screw rod, namely the cross shaft 44 allows the screw rod 42 to freely rotate, and the cross shaft can not move along the axial direction of the screw rod; a pair of short chutes 6 are respectively arranged on two sides of one end of the motor component 41 and are pivoted with a cross shaft 44, a linkage plate 46 is arranged between the cross shaft on the short chute and the cross shaft 44 at the end part of the screw rod 41, so that the two cross shafts 44 at the same end are synchronous, and inclined supporting arms 7 are pivoted on the cross shafts on two sides of the motor component 41; the pair of diagonal bracing arms 7 far away from one end of the motor assembly are directly pivoted on the transverse shaft 44 and positioned at two sides of the screw rod 42, and the table top 1 is jacked up by the four diagonal bracing arms 7 at the left side and the right side together, so that the table top can also have stable support even in an initial state.

Through this structure, shift a pair of bracing arm 7 toward desktop one side, avoid too between two parties and bring the trouble for the dog setting on the base, dodge 2 middle parts of back base like this and can form bigger fretwork space.

In addition, the desktop 1 and the base 2 are two corresponding surfaces, and the motor assembly 4 is locked at the back of the desktop in the embodiment, so that a necessary shade can be formed due to the fact that the desktop is a complete plane; of course, the motor assembly 4 can be designed on one side of the base, and the effect is the same except for the attractive appearance. The angle of the angle arm 7 is only illustrated to have an initial angle with the force application direction, and besides the figures, the angle arm may be a wedge-shaped block, an arc-shaped arm, or a rectangular block with the force application point and the force application point on oblique lines.

Claims

1. An electric lifting table comprises a base (2), a table top (1), two supporting arms (3) which are hinged in a crossed manner and a motor assembly (4); the desktop (1) is supported on the base (2) by the two supporting arms (3), one ends of the two supporting arms (3) are fixed ends and are correspondingly hinged on the base (2) and the desktop (1), the other ends of the two supporting arms are movable ends and are positioned in corresponding long sliding grooves (5) of the base (2) and the desktop (1) in a sliding mode, the motor assembly (4) comprises a motor component (41) and a screw rod (42) driven to rotate by the motor component (41), the end portions of the motor component (41) and the screw rod (42) are correspondingly connected to the fixed ends and the movable ends of the supporting arms (3), and the motor assembly (4) drives the desktop (1) to move up and down; the method is characterized in that: two ends of the screw rod (42) are positioned in the short sliding groove (6) of the table top (1) or the base (2) through a transverse shaft (44), a diagonal bracing arm (7) is positioned on the transverse shaft (44), and the lower end part of the diagonal bracing arm (7) can be abutted against a stop block (24) arranged on the base (2) or the table top (1); a nut seat (43) with a traction arm is arranged on the screw rod (42) in a rotating mode, and the traction arm (45) is connected with the movable end of the supporting arm (3).

2. An electrically powered elevating table as set forth in claim 1 wherein: the motor component (41) is locked on the table top (1) or the base (2), an output shaft (411) of the motor component is coupled with the screw rod (42) through a spline sleeve, and the screw rod (42) is allowed to move axially while power is transmitted.

3. An electrically powered elevating table as claimed in claim 1 or claim 2 wherein: the base (2) is a rectangular frame, the front frame (21) and the rear frame (21) are provided with long sliding chutes (5), and the left side and the right side are respectively provided with a stop block (24); the desktop (1) is of a plane structure, the motor assembly (4) is installed on the back of the desktop (1), and the back of the desktop (1) is further locked with the long sliding chute (5) and the short sliding chute (6); the front surface of the desktop (1) is provided with a key area (11) for controlling the motor assembly (4), and the desktop (1) can be covered on a frame (21) of the base.

4. A motorized lift table, as set forth in claim 3, wherein: the front side and the rear side of the desktop (1) and the base (2) are respectively provided with a pair of supporting arms (3) which are hinged in a crossed manner, the two pairs of supporting arms (3) act synchronously, the downward movable ends of the two supporting arms (3) are connected through a long shaft (31), and the two ends of the long shaft (31) are respectively pivoted in the long sliding chute (5) of the base (2); the upward movable ends of the two supporting arms (3) are pivoted in a pair of long chutes (5) locked on the back of the table top (1) through respective short shafts (32), and the short shafts (32) are also pivoted with traction arms (45).

5. A motorized lift table, as set forth in claim 3, wherein: the motor assembly (4) is arranged in the middle between the front and the back of the desktop (1), a pair of short sliding chutes (6) and a pair of inclined supporting arms (7) are respectively arranged on two sides of two ends of the screw rod (42), the two ends of the cross shaft (44) are pivoted in the two short sliding chutes (6), two ends of the screw rod (42) respectively penetrate through central holes of the corresponding cross shaft (44), and the two cross shafts are crossed and restrict the axial movement of the cross shaft (44) along the screw rod (42); a pair of short chutes (6) are respectively arranged on two sides of one end of the motor component (41) and are pivoted with a transverse shaft (44), a linkage plate (46) is arranged between the transverse shaft (44) on the short chutes (6) and the transverse shaft (44) at the end part of the screw (42) to synchronize the two transverse shafts (44) at the same end, and inclined supporting arms (7) are pivoted on the transverse shafts (44) on the two sides of the motor component (41); a pair of inclined supporting arms (7) far away from one end of the motor component (41) are directly pivoted on the transverse shaft (44) and positioned at two sides of the screw rod (42), and the table top (1) is jacked up by the four inclined supporting arms (7) at the left side and the right side together.

6. A motorized lift table, as set forth in claim 3, wherein: the front and rear frames (21) of the base (2) are formed by cutting off sectional materials, the end parts of the left side and the right side are plastic parts (22), and the plastic parts are locked on the two end parts of the frames (21) through screws to form the whole base (2).