CN113951631A

CN113951631A - A lift table

Info

Publication number: CN113951631A
Application number: CN202111009949.4A
Authority: CN
Inventors: 项乐宏; 李方圆; 胡俊浩
Original assignee: Loctek Ergonomic Technology Co Ltd
Current assignee: Loctek Ergonomic Technology Co Ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-01-21
Anticipated expiration: 2041-08-31
Also published as: CN113951631B

Abstract

The invention discloses a lifting platform table, which comprises a table board frame and table legs; a table board body has a fixed table board and a movable table board, the fixed table board is fixedly connected with the table board frame, and the movable table board and the table board frame are fixedly connected. A lift assembly is connected therebetween, and a slow-down structure is also included. The slow-down structure includes two relatively slidingly connected first seals and second seals. The sealing member and the second sealing member are relatively deployed and reset elastic members, the first sealing member and the second sealing member are arranged between the movable table board and the table board frame along the first direction, and are used for before the movable table board descends to the lowest position A resistance is applied to the movable table board to delay the descending speed of the movable table board, and the first direction is the movement direction of the movable table board relative to the table board frame. The lifting table can prevent hands from being pinched when the movable table board is lowered, and has high safety and good user experience.

Description

Lifting table

Technical Field

The invention relates to the technical field of lifting tables, in particular to a lifting table.

Background

At present, in order to meet the requirements of users with different heights and different ages, office tables or learning tables in the prior art are mostly set to be lifting type, and a workbench which can be lifted independently is arranged on a table plate, namely a lifting table, so that the height of the table plate can be adjusted according to the needs of the users. The lifting table in the prior art generally comprises a table plate and table legs, wherein the table plate comprises a fixed table plate and a movable table plate, the bottom of the fixed table plate is fixedly connected with a table plate frame at the top of the table legs, a gap is formed in one side, close to a user, of the fixed table plate, the movable table plate is arranged in the gap, a lifting assembly is arranged between the movable table plate and the table plate frame, and the lifting assembly is used for adjusting the height of the movable table plate relative to the table plate frame; when the movable table board is used, the movable table board is lifted, so that a user can stand for working; when the movable table plate is not used, the movable table plate can be lowered to the lowest height and is flush with the fixed table plate, so that the use area of the fixed table plate is increased; the outer edge of the movable table plate is provided with a lock hook, and the lock hook can hook the bottom of the table plate frame when the movable table plate is lowered to the lowest height, so that the movable table plate is limited, and the movable table plate is kept at the lowest position. This prior art elevating platform table has some not enough in the in-service use: when the movable table plate descends, a user generally holds the two sides of the movable table plate by two hands and exerts force downwards, the supporting force of the lifting assembly is overcome to enable the movable table plate to descend, when the movable table plate descends to the lowest height, the force used by the user is too large or too violent, the danger of clamping hands can be caused between the edge of the movable table plate and the edge of the fixed table plate, and the user experience feeling is poor.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the lifting table which can prevent the hands from being clamped when the movable table plate descends, has high safety and good user experience.

The technical scheme of the invention is to provide a lifting table with the following structure: it comprises

A table frame and table legs;

the table plate body is provided with a fixed table plate and a movable table plate, the fixed table plate is fixedly connected with the table plate frame, a lifting assembly is connected between the movable table plate and the table plate frame, and the lifting assembly is used for adjusting the height of the movable table plate relative to the fixed table plate; still include slowly falling the structure, slowly fall the structure and include two relative sliding connection's first sealing member and second sealing member, be equipped with between first sealing member and the second sealing member and make first sealing member and second sealing member expand the elastic component that resets relatively, first sealing member and second sealing member set up between activity table and table frame along first direction for exert resistance for the activity table before the activity table descends to the lowest position in order to delay the falling speed of activity table, first direction is the direction of motion of the relative table frame of activity table.

Preferably, the first sealing element is connected with the table frame, and the second sealing element is arranged to be capable of abutting against the movable table before the movable table descends to the lowest position; or the first sealing element is connected with the movable table plate, and the second sealing element is arranged to be capable of abutting against the table plate frame before the movable table plate descends to the lowest position;

the first sealing element and the second sealing element are sealed with each other to form an air compression cavity, and the first sealing element or the second sealing element is provided with an exhaust hole communicated with the air compression cavity.

Preferably, the slow descending structure is arranged between the movable table and the table frame, the first sealing element is connected with the table frame or the movable table, and the second sealing element is arranged to abut against the movable table or the table frame before the movable table descends to the lowest position. The slow descending structure is arranged between the movable table plate and the table plate frame and can be vertically arranged or slightly inclined at a certain angle, and the slow descending structure abuts against the movable table plate or the table plate frame before the movable table plate descends to the lowest position so as to delay the descending speed of the movable table plate; the slow descending structure can also directly act on the lifting assembly, and resistance is applied to the lifting assembly before the lifting assembly descends to the lowest position so as to slow down the descending speed of the lifting assembly, so that the finger of a user can be separated from the movable table board within a sufficient time, and the finger is prevented from being injured due to over-violent and over-large force.

Preferably, the first sealing element is a lower cylinder connected to the table frame and having an open upper end, the second sealing element is an upper cylinder in sliding fit with the lower cylinder, and the inner cavity of the lower cylinder and the inner cavity of the upper cylinder form the air compression cavity; one end of the elastic piece is arranged in the lower cylinder body, and the other end of the elastic piece is abutted against the upper cylinder body; the exhaust hole is arranged at the top of the upper cylinder body. Set up like this, the sealed cooperation that utilizes barrel and last barrel down forms the air compression chamber, and when barrel and last barrel slided relatively down, the air in the air compression chamber is discharged from the exhaust hole because of being compressed to the realization barrel and last barrel can slowly contract and provide the resistance that the activity table descends, its simple structure, convenient to use down.

Preferably, the first sealing element comprises a base connected to the table frame, and the lower cylinder is arranged in the base; the base on the slip cover be equipped with the casing, last barrel connect in the casing. The device has the advantages that the device plays a role in guiding the movement between the lower barrel and the upper barrel, and the stability of the movement between the lower barrel and the upper barrel is guaranteed.

Preferably, the outer side wall of the base is provided with a plurality of ribs which are distributed along the circumferential direction of the base and extend along the longitudinal direction of the base, and the outer side wall of each rib is in sliding fit with the inner wall of the shell. The arrangement of the convex ribs improves the mechanical strength of the slow descending structure, and meanwhile, the base and the shell are more compact in matching and do not shake when sliding relatively.

Preferably, the outer side wall of the base is provided with a first limiting block protruding outwards, the inner side wall of the shell is provided with a second limiting block matched with the first limiting block for limiting, and the shell can be prevented from being separated from the base when sliding towards the direction far away from the base. The cooperation of the first stopper on the base lateral wall and the second stopper on the casing inside wall can prevent effectively that the casing from breaking away from the base, has ensured the security of slowly falling the structure.

Preferably, the outer side wall of the lower cylinder body is provided with a sealing ring tightly attached to the inner wall of the upper cylinder body. Due to the arrangement of the sealing ring, the sealing effect between the lower barrel body and the upper barrel body is better.

Preferably, the inner bottom wall of the upper barrel is provided with a connecting column extending along the length direction of the upper barrel, one end of the elastic part is connected with the connecting column, and the other end of the elastic part is abutted against the inner bottom wall of the lower barrel. The arrangement makes the connection of the elastic element more stable, and the elastic element can not deflect when being expanded or compressed.

Preferably, when the movable table plate descends to the lowest position, the top of the movable table plate is level with the top of the fixed table plate. By the arrangement, the effective use area of the fixed table plate can be expanded when the movable table plate is lowered to the lowest position, and the requirements of users are met.

Preferably, the bottom that the activity table is close to fixed table one end is connected with the lock seat, the lock seat on sliding fit have the spring bolt, and rotatable coupling has a spanner on the activity table, the spanner pass through the floodgate line and be connected with the spring bolt for control spring bolt stretches out or retracts the lock seat, be equipped with the locking piece that supplies the spring bolt to match the grafting on the lateral wall of fixed table. According to the arrangement, when the movable table plate descends to the lowest position, the lock tongue is locked with the lock block, so that the movable table plate is locked at the lowest position; when the movable table plate is required to be lifted for use, the wrench is pulled by hand to enable the lock tongue to be separated from the locking block, and the operation is very convenient.

After adopting the structure, compared with the prior art, the lifting table disclosed by the invention has the following advantages: the lifting table is provided with a slow descending structure, resistance is applied to the movable table plate or the lifting assembly by the slow descending structure before the movable table plate descends to the lowest position so as to delay the descending speed of the movable table plate, and therefore fingers of a user can be loosened from the edges of the two ends of the movable table plate before the user tightly holds the two ends of the movable table plate by two hands so as to avoid the risk of clamping hands, and the safety is high; the first sealing element and the second sealing element of the slow descending structure can overcome the elasticity of the elastic element to contract oppositely when bearing axial pressure, and air in the air compression cavity is slowly exhausted through the exhaust hole after being compressed, so that the slow descending structure achieves the purpose of low-speed contraction motion, and the descending speed of the movable table plate is delayed; when the movable table plate ascends from the lowest position, the first sealing element and the second sealing element are relatively unfolded and reset under the elastic force of the elastic element by the slow descending structure, and meanwhile, the assistance of an initial opening state is provided for the movable table plate, so that the movable table plate can be quickly opened and a gap for fingers to stretch into is formed between the movable table plate and the fixed table plate, and the movable table plate can be tightly held by the fingers to ascend.

Drawings

Fig. 1 is a schematic structural view of an elevating table of the present invention.

Fig. 2 is another angle structure diagram of the elevating table of the present invention.

Fig. 3 is a schematic structural view of a slow descending structure of an elevating table of the present invention.

Fig. 4 is an assembly structure diagram of a slow descending structure of an elevating table according to the present invention.

Fig. 5 is a schematic view of another angle assembly structure of the slow descending structure of the elevating table of the present invention.

Fig. 6 is a schematic sectional view of an elevating table according to the present invention.

As shown in the figure:

1. table frame, 2, table leg, 3, table body, 300, fixed table, 301, activity table, 4, lifting unit, 400, first support, 401, second support, 5, slowly fall structure, 500, base, 501, connecting seat, 502, lower barrel, 503, casing, 504, go up the barrel, 505, elastic component, 506, air compression chamber, 507, exhaust hole, 508, sealing washer, 509, protruding muscle, 510, first stopper, 511, second stopper, 512, spliced pole, 513, ring channel, 6, lock seat, 600, spring bolt, 601, spanner, 602, locking piece, 7, air spring.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples.

Referring to fig. 1 and 2, the elevating table of the present invention comprises a table frame 1, table legs 2 and a table body 3; the table board frame 1 is a hollow cuboid frame, the top of the frame is arranged in an open mode, the table board body 3 comprises a fixed table board 300 and a movable table board 301, the fixed table board 300 is fixedly connected with the table board frame 1, a lifting assembly 4 is connected between the movable table board 301 and the table board frame 1, and the lifting assembly 4 is used for adjusting the height of the movable table board 301 relative to the fixed table board 300; in this embodiment, the lifting assembly 4 comprises two supports hinged in the middle in an X shape: the upper end of the first bracket 400 is rotatably connected with the movable table board 301, and the lower end of the first bracket 400 is in sliding fit with the table board frame 1; the lower end of the second support 401 is rotatably connected with the table frame 1, and the upper end of the second support 401 is in sliding fit with the movable table 301; a controllable gas spring 7 is arranged between the lifting component 4 and the movable table board 301, and is used for providing lifting force for the movable table board 301 to lift, so that the height of the movable table board 301 relative to the fixed table board 300 can be adjusted. In other embodiments, the lifting component 4 may also be a liftable screw-nut pair, a lifting bracket in a zigzag shape, or the like; the bottom that activity table 301 is close to fixed table 300 one end is connected with lock seat 6, lock seat 6 on sliding fit have a spring bolt 600, and rotatable coupling has spanner 601 on the activity table 301, spanner 601 pass through the floodgate line and be connected with spring bolt 600 for control spring bolt 600 stretches out or withdrawal lock seat 6, be equipped with on the lateral wall of fixed table 300 and supply spring bolt 600 to match the locking piece 602 of pegging graft. When the movable table 301 is lowered to the lowest position, the latch 600 can be automatically inserted into the locking block 602 to keep the height of the movable table 301 fixed; in addition, when the movable table 301 is lowered to the lowest position, the top of the movable table 301 is flush with the top of the fixed table 300. When the movable table board 301 is lowered to the lowest position, the effective use area of the fixed table board 300 can be expanded, and the requirements of users can be met. In this embodiment, an openable drawer is further provided below the fixed table 300.

Referring to fig. 1 and 2 again, the lift table of the present invention further includes a slow-descending structure 5, where the slow-descending structure 5 includes two first sealing members and two second sealing members that are slidably connected to each other, an elastic member 505 is disposed between the first sealing members and the second sealing members, and the first sealing members and the second sealing members are disposed between the movable table 301 and the table frame 1 along a first direction, which is a moving direction of the movable table 301 relative to the table frame 1, that is, a height direction of the lift table in fig. 1, and are used for applying resistance to the movable table 301 before the movable table 301 descends to a lowest position to delay a descending speed of the movable table 301.

Referring to fig. 2 to 6, as an embodiment of the present invention, a first sealing member is connected to the table frame 1, and a second sealing member is disposed to abut against the movable table 301 before the movable table 301 is lowered to the lowest position; or the first sealing element is connected with the movable table plate 301, and the second sealing element is arranged to be capable of abutting against the table plate frame 1 before the movable table plate 301 descends to the lowest position; the first sealing element and the second sealing element are mutually sealed to form an air compression cavity 506, and the first sealing element or the second sealing element is provided with an exhaust hole 507 communicated with the air compression cavity 506. In this embodiment, the slow descending structure 5 is vertically disposed in the table frame 1 and located right below the movable table 301; of course, the slow descending structure 5 may also directly act on the lifting assembly 4 to apply resistance to the lifting assembly 4 before the lifting assembly 4 descends to the lowest position, so as to slow down the descending speed of the lifting assembly 4, so as to provide a user with a sufficient time for separating the fingers from the movable table 301, thereby avoiding the fingers from being injured due to over-hard and over-large force.

Specifically, when bearing axial pressure, the first sealing element and the second sealing element of the slow descending structure 5 can overcome the elastic force of the elastic element 505 to contract oppositely, and air in the air compression cavity 506 is slowly exhausted through the exhaust hole 507 after being compressed, so that the slow descending structure 5 achieves the purpose of low-speed contraction movement, and the descending speed of the movable table board 301 is delayed; when the movable table 301 ascends from the lowest position, the slow descending structure 5 relatively expands and resets the first sealing element and the second sealing element under the elastic force of the elastic element 505 and provides an initial opening state assistance to the movable table 301, so that the movable table 301 can be quickly opened and a gap for fingers to extend into is formed between the movable table 301 and the fixed table 300, and the movable table 301 can be gripped by the fingers to ascend. In this embodiment, before the movable table 301 is lowered to the lowest position, the movable table 301 is lowered to a position 2-10 cm away from the fixed table to accommodate at least the distance of fingers.

In this embodiment, referring to fig. 2 to 6 again, the first sealing element of the slow descending structure 5 is a lower cylinder 502 connected to the table frame 1 and having an open upper end, the second sealing element is an upper cylinder 504 slidably fitted on the lower cylinder 502, and the inner cavities of the lower cylinder 502 and the upper cylinder 504 form the air compression cavity 506; one end of the elastic member 505 is arranged in the lower cylinder 502, and the other end of the elastic member 505 is abutted against the upper cylinder 504; an exhaust hole 507 is provided at the top of the upper cylinder 504. An air compression cavity 506 is formed by the sealing fit of the lower cylinder 502 and the upper cylinder 504, and when the lower cylinder 502 and the upper cylinder 504 slide relatively, air in the air compression cavity 506 is compressed and exhausted from the exhaust hole 507, so that the lower cylinder 502 and the upper cylinder 504 can be slowly contracted to provide resistance for descending the movable table board 301. More specifically, the upper cylinder 504 is sleeved on the lower cylinder 502, an annular groove 513 is formed on the outer side wall of the lower cylinder 502, and a sealing ring 508 tightly attached to the inner wall of the upper cylinder 504 is connected in the annular groove 513. In other embodiments, the descent control structure 5 may also take the form of: the first sealing element is a lower cylinder 502 which is connected to the table board frame 1 and has an open upper end, the second sealing element is a piston rod which is in sliding fit in the lower cylinder 502, the outer circumferential wall of the piston rod is in sealing fit with the inner wall of the lower cylinder 502, an air compression cavity 506 is formed between the piston rod and the lower cylinder 502, and an exhaust hole 507 is formed in the lower cylinder 502; the elastic member 505 is disposed in the lower cylinder 502, a lower end of the elastic member 505 abuts against an inner bottom wall of the lower cylinder 502, and an upper end of the elastic member 505 abuts against the piston rod. In order to firmly fix the elastic member 505 and enable the upper cylinder 504 and the lower cylinder 502 to slide more smoothly, a connecting column 512 extending along the length direction of the upper cylinder 504 is arranged on the inner bottom wall of the upper cylinder 504, one end of the elastic member 505 is connected with the connecting column 512, and the other end of the elastic member 505 is abutted against the inner bottom wall of the lower cylinder 502.

Referring to fig. 5 and 6 again, as an embodiment of the present invention, the first sealing member includes a base 500, a connecting seat 501 is provided at a lower end of the base 500, the connecting seat 501 is connected to the table frame 1 by a screw, and a lower cylinder 502 is provided in the base 500; a housing 503 is slidably sleeved on the base 500, and the upper cylinder 504 is connected in the housing 503. The outer sidewall of the base 500 is provided with a convex first stopper 510, and the inner sidewall of the housing 503 is provided with a second stopper 511 that is matched with the first stopper 510 for stopping, so that the housing 503 can be prevented from separating from the base 500 when the housing 503 slides away from the base 500. A plurality of ribs 509 which are distributed along the circumferential direction and extend along the longitudinal direction are arranged on the outer side wall of the base 500, and the outer side wall of each rib 509 is in sliding fit with the inner wall of the shell 503; the ribs 509 improve the mechanical strength of the descent control structure 5, and also make the base 500 and the housing 503 more compact to fit with each other, without wobbling when sliding relative to each other.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A lifting table comprises

A table frame and table legs;

the table plate body is provided with a fixed table plate and a movable table plate, the fixed table plate is fixedly connected with the table plate frame, a lifting assembly is connected between the movable table plate and the table plate frame, and the lifting assembly is used for adjusting the height of the movable table plate relative to the fixed table plate; the method is characterized in that: still include slowly falling the structure, slowly fall the structure and include two relative sliding connection's first sealing member and second sealing member, be equipped with between first sealing member and the second sealing member and make first sealing member and second sealing member expand the elastic component that resets relatively, first sealing member and second sealing member set up between activity table and table frame along first direction for exert resistance for the activity table before the activity table descends to the lowest position in order to delay the falling speed of activity table, first direction is the direction of motion of the relative table frame of activity table.

2. An elevator table as defined in claim 1, wherein: the first sealing element is connected with the table plate frame, and the second sealing element is arranged to be capable of abutting against the movable table plate before the movable table plate descends to the lowest position; or the first sealing element is connected with the movable table plate, and the second sealing element is arranged to be capable of abutting against the table plate frame before the movable table plate descends to the lowest position;

3. An elevator table as defined in claim 2, wherein: the first sealing element is a lower cylinder connected to the table frame and with an open upper end, the second sealing element is an upper cylinder in sliding fit with the lower cylinder, and an inner cavity of the lower cylinder and an inner cavity of the upper cylinder form the air compression cavity; one end of the elastic piece is arranged in the lower cylinder body, and the other end of the elastic piece is abutted against the upper cylinder body; the exhaust hole is arranged at the top of the upper cylinder body.

4. An elevator table as claimed in claim 3, wherein: the first sealing element comprises a base connected to the table plate frame, and the lower cylinder is arranged in the base; the base on the slip cover be equipped with the casing, last barrel connect in the casing.

5. An elevator table as defined in claim 4, wherein: the outer side wall of the base is provided with a plurality of convex ribs which are distributed along the circumferential direction of the base and extend along the longitudinal direction of the base, and the outer side wall of each convex rib is in sliding fit with the inner wall of the shell.

6. An elevator table as defined in claim 4, wherein: the outer side wall of the base is provided with a first limiting block which protrudes outwards, the inner side wall of the shell is provided with a second limiting block which is matched with the first limiting block for limiting, and the shell can be prevented from being separated from the base when sliding towards the direction far away from the base.

7. An elevator table as claimed in claim 3, wherein: and a sealing ring tightly attached to the inner wall of the upper barrel is arranged on the outer side wall of the lower barrel.

8. An elevator table as claimed in claim 3, wherein: the inner bottom wall of the upper barrel is provided with a connecting column extending along the length direction of the upper barrel, one end of the elastic part is connected with the connecting column, and the other end of the elastic part is abutted against the inner bottom wall of the lower barrel.

9. An elevator table as defined in claim 1, wherein: when the movable table plate descends to the lowest position, the top of the movable table plate is flush with the top of the fixed table plate.

10. An elevator table as defined in claim 1, wherein: the bottom that the activity table is close to fixed table one end is connected with the lock seat, the lock seat on sliding fit have the spring bolt, and rotatable coupling has a spanner on the activity table, the spanner pass through the floodgate line and be connected with the spring bolt for control spring bolt stretches out or retracts the lock seat, be equipped with the locking piece that supplies the spring bolt to match the grafting on the lateral wall of fixed table.