CN113951631B

CN113951631B - Lifting table

Info

Publication number: CN113951631B
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: 2023-08-29
Anticipated expiration: 2041-08-31
Also published as: CN113951631A

Abstract

The invention discloses a lifting table, which comprises a table plate frame and table legs; the movable table plate comprises a table plate body, a movable table plate and a movable table plate frame, wherein 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, the movable table plate further comprises a slow descending structure, the slow descending structure comprises a first sealing piece and a second sealing piece which are connected in a sliding mode, an elastic piece which enables the first sealing piece and the second sealing piece to be unfolded and reset relatively is arranged between the first sealing piece and the second sealing piece, the first sealing piece and the second sealing piece are arranged between the movable table plate and the table plate frame along a first direction, and resistance is applied to the movable table plate before the movable table plate descends to the lowest position so as to delay the descending speed of the movable table plate, and the first direction is the moving direction of the movable table plate relative to the table plate frame. The lifting table can prevent the clamping hands when the movable table board descends, and is high in safety and good in 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 demands of users of different heights and different age groups, office tables or study tables in the prior art are mostly arranged to be lifting type, and a workbench capable of being independently lifted is arranged on a table plate, which is also called a lifting table, and 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 plate is used, the movable table plate is lifted, so that a user can stand for office work; 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 side edge of the movable table plate is provided with a lock hook which can hook the bottom of the table plate frame when the movable table plate descends to the lowest height, so that the movable table plate is limited, and the movable table plate is kept at the lowest position. The lifting table of the prior art has some defects in the actual use process: when the movable table board descends, a user holds two sides of the movable table board by hands and applies downward force, the supporting force of the lifting assembly is overcome, the movable table board descends, when the movable table board descends to the lowest height, the force applied by the user is overlarge or too strong, the danger of clamping the hands is caused between the edge of the movable table board and the edge of the fixed table board, and the user experience is poor.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the lifting table which can prevent the clamping hands when the movable table board descends, and has high safety and good user experience.

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

A table frame and legs;

the table body is provided with a fixed table plate and a movable table plate, the fixed table plate is fixedly connected with a 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 including 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 the relative elastic component that expandes and reset of second sealing member, first sealing member and second sealing member set up between movable table and table frame along first direction for apply the resistance in order to delay the decline speed of movable table for movable table before movable table descends to the minimum position, first direction is the direction of motion of movable table relative table frame.

Preferably, the first sealing member is connected with the table frame, and the second sealing member is arranged to be abutted against the movable table before the movable table is lowered to the lowest position; or the first sealing piece is connected with the movable table plate, and the second sealing piece can be propped against the table plate frame before the movable table plate descends to the lowest position;

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

Preferably, the descent control structure is arranged between the movable table plate and the table plate frame, the first sealing element is connected with the table plate frame or the movable table plate, and the second sealing element is arranged to be propped against the movable table plate or the table plate frame before the movable table plate 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 is propped 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; of course, the descent control 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 that the descending speed of the lifting assembly is slowed down, the time for separating fingers of a user from the movable table plate is prolonged, and fingers are prevented from being scratched due to excessive 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 slidingly matched 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, and the other end of the elastic piece is propped against the upper cylinder; the exhaust hole is arranged at the top of the upper cylinder body. The lower cylinder and the upper cylinder are in sealing fit to form an air compression cavity, and when the lower cylinder and the upper cylinder slide relatively, air in the air compression cavity is compressed to be discharged from the exhaust hole, so that the lower cylinder and the upper cylinder can be slowly contracted to provide the descending resistance of the movable table plate, and the movable table plate is simple in structure and convenient to use.

Preferably, the first sealing member comprises a base connected to the table frame, and the lower cylinder is arranged in the base; the base is sleeved with a shell in a sliding manner, and the upper cylinder is connected in the shell. The arrangement plays a role in guiding the movement between the lower cylinder and the upper cylinder, and ensures the stability of the movement between the lower cylinder and the upper cylinder.

Preferably, the outer side wall of the base is provided with a plurality of ribs which are distributed along the circumferential direction and extend longitudinally along the base, and the outer side wall of the ribs are in sliding fit with the inner wall of the shell. The arrangement of the convex ribs improves the mechanical strength of the descent control structure, and simultaneously makes the cooperation between the base and the shell more compact without shaking during relative sliding.

Preferably, the outer side wall of the base is provided with a first protruding limiting block, 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 the shell slides in the direction 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 slowly falling the security of structure.

Preferably, a sealing ring tightly attached to the inner wall of the upper cylinder body is arranged on the outer side wall of the lower cylinder body. The sealing ring is arranged, so that the sealing effect between the lower cylinder body and the upper cylinder body is better.

Preferably, a connecting column extending along the length direction of the upper cylinder is arranged on the inner bottom wall of the upper cylinder, one end of the elastic piece is connected with the connecting column, and the other end of the elastic piece abuts against the inner bottom wall of the lower cylinder. The arrangement makes the connection of the elastic element more stable, and the elastic element can not deviate when expanding or compressing.

Preferably, 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. The movable table plate can be arranged at the lowest position, so that the effective use area of the fixed table plate can be expanded when the movable table plate descends to the lowest position, and the requirements of users are met.

Preferably, the bottom of the movable table plate, which is close to one end of the fixed table plate, is connected with a lock seat, the lock seat is provided with a lock tongue in sliding fit, the movable table plate is rotatably connected with a wrench, the wrench is connected with the lock tongue through a brake cable and used for controlling the lock tongue to extend out of or retract into the lock seat, and the side wall of the fixed table plate is provided with a lock block for the lock tongue to be inserted in a matched mode. The movable table plate is arranged at the lowest position, and the lock tongue is locked with the lock block when the movable table plate descends to the lowest position; when the movable table plate is required to be lifted for use, the wrench is manually pulled, so that the lock tongue is separated from the locking piece, and the operation is very convenient.

After the structure is adopted, compared with the prior art, the lifting table has the following advantages: the lifting table is provided with the descent control structure, and the descent control structure applies resistance to the movable table or the lifting assembly before the movable table descends to the lowest position so as to delay the descending speed of the movable table, so that fingers of a user can be loosened from the edges of the two ends of the movable table before the two ends of the movable table are gripped by the two hands of the user to lower the movable table to the lowest position, thereby avoiding the risk of clamping hands, and having high safety; the first sealing element and the second sealing element of the descent control structure can overcome the elastic force of the elastic element to contract in opposite directions when bearing axial pressure, and air in the air compression cavity is slowly discharged through the exhaust hole after being compressed, so that the descent control structure achieves the aim of low-speed contraction movement, and the descent speed of the movable table plate is delayed; when the movable table plate rises from the lowest position, the slowly-descending structure enables the first sealing piece and the second sealing piece to be relatively unfolded and reset under the elasticity of the elastic piece, and meanwhile, the movable table plate is provided with assistance in an initial opening state, so that the movable table plate can be quickly opened and a gap for fingers to extend into is formed between the movable table plate and the fixed table plate, and the movable table plate is held by the fingers to perform ascending operation.

Drawings

Fig. 1 is a schematic view of a lifting table according to the present invention.

Fig. 2 is a schematic view of another angle structure of a lifting table according to the present invention.

Fig. 3 is a schematic structural view of a slowly lowering structure of a lifting table according to the present invention.

Fig. 4 is a schematic diagram of an assembly structure of a slowly lowering structure of a lifting table according to the present invention.

Fig. 5 is a schematic view of another angle assembly structure of a slowly lowering structure of a lifting table according to the present invention.

Figure 6 is a schematic cross-sectional view of a lift table of the present invention.

As shown in the figure:

1. the desk comprises a desk plate frame, 2, desk legs, 3, a desk plate body, 300, a fixed desk plate, 301, a movable desk plate, 4, a lifting component, 400, a first support, 401, a second support, 5, a slow descending structure, 500, a base, 501, a connecting seat, 502, a lower cylinder body, 503, a shell, 504, an upper cylinder body, 505, an elastic piece, 506, an air compression cavity, 507, an exhaust hole, 508, a sealing ring, 509, a convex rib, 510, a first limiting block, 511, a second limiting block, 512, a connecting column, 513, an annular groove, 6, a lock seat, 600, a lock tongue, 601, a spanner, 602, a lock block, 7 and a gas spring.

Detailed Description

The invention will be described in further detail with reference to the drawings and the specific examples.

Referring to fig. 1 and 2, the lifting table of the invention comprises a table frame 1, table legs 2 and a table body 3; the table frame 1 is a hollow cuboid frame, the top of the frame is opened, the table body 3 comprises a fixed table 300 and a movable table 301, the fixed table 300 is fixedly connected with the table frame 1, a lifting assembly 4 is connected between the movable table 301 and the table frame 1, and the lifting assembly 4 is used for adjusting the height of the movable table 301 relative to the fixed table 300; in this embodiment, the lifting assembly 4 comprises two brackets hinged in the middle to form an X-shape: the upper end of the first bracket 400 is rotatably connected with the movable table 301, and the lower end of the first bracket 400 is in sliding fit on the table frame 1; the lower end of the second bracket 401 is rotatably connected with the table frame 1, and the upper end of the second bracket 401 is in sliding fit on the movable table 301; the controllable air spring 7 is disposed between the lifting assembly 4 and the movable table 301, and is used for providing lifting force for lifting the movable table 301, so that the height of the movable table 301 relative to the fixed table 300 can be adjusted. In other embodiments, the lifting assembly 4 may be a lifting screw nut pair, a zigzag lifting bracket, or the like; the bottom of the movable table 301, which is close to one end of the fixed table 300, is connected with a lock seat 6, a lock tongue 600 is slidably matched on the lock seat 6, a wrench 601 is rotatably connected on the movable table 301, the wrench 601 is connected with the lock tongue 600 through a brake cable and used for controlling the lock tongue 600 to extend or retract into the lock seat 6, and a lock block 602 for the lock tongue 600 to be matched and inserted is arranged on the side wall of the fixed table 300. When the movable table 301 descends to the lowest position, the lock tongue 600 can be automatically inserted into the lock 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. The effective usable area of the fixed table 300 may be expanded when the movable table 301 is lowered to the lowest position, thereby meeting the user's needs. In this embodiment, an openable drawer is also provided below the fixed table 300.

Referring to fig. 1 and 2 again, the lifting table of the present invention further includes a descent control structure 5, where the descent control structure 5 includes two first sealing members and two second sealing members that are connected in a sliding manner, an elastic member 505 is disposed between the first sealing member and the second sealing member, and the first sealing member and the second sealing member are disposed between the movable table 301 and the table frame 1 along a first direction, so as to apply a resistance to the movable table 301 to delay the descent speed of the movable table 301 before the movable table 301 descends to the lowest position, where the first direction is a movement direction of the movable table 301 relative to the table frame 1, that is, a height direction of the lifting table in fig. 1.

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 provided to be abutted against the movable table 301 before the movable table 301 is lowered to the lowest position; or the first sealing member is connected with the movable table 301, and the second sealing member is arranged to be abutted against the table frame 1 before the movable table 301 is lowered to the lowest position; the first sealing member and the second sealing member are sealed with each other and form an air compression cavity 506, and an exhaust hole 507 communicated with the air compression cavity 506 is formed in the first sealing member or the second sealing member. In this embodiment, the descent control device 5 is vertically disposed in the table frame 1 and located directly under the movable table 301; of course, the descent control structure 5 can also directly act on the lifting assembly 4, and 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, and achieve the purpose of keeping the fingers of the user away from the movable table 301 for a long time, and avoiding the fingers from being pinched due to too strong force and too large force.

Specifically, the first sealing member and the second sealing member of the descent control structure 5 can overcome the elastic force of the elastic member 505 to contract and move in opposite directions when bearing the axial pressure, and the air in the air compression cavity 506 is compressed and then slowly discharged through the air discharge hole 507, so that the descent control structure 5 achieves the purpose of low-speed contraction movement, and the descent speed of the movable table 301 is delayed; when the movable table 301 is lifted from the lowest position, the descent control structure 5 enables the first sealing member and the second sealing member to be relatively unfolded and reset under the elasticity of the elastic member 505, and simultaneously provides assistance in the initial opening state for the movable table 301, so that the movable table 301 can be quickly opened and a gap for extending fingers is formed between the movable table 301 and the fixed table 300, and the fingers can grip the movable table 301 for lifting operation. In this embodiment, before the movable table 301 is lowered to the lowest position, it is generally meant that the movable table 301 is lowered to a position 2-10 cm away from the fixed table to accommodate at least the distance of the fingers.

In this embodiment, referring to fig. 2 to 6 again, the first sealing member of the descent control device 5 is a lower cylinder 502 connected to the table frame 1 and having an open upper end, the second sealing member is an upper cylinder 504 slidably fitted on the lower cylinder 502, and the inner cavity of the lower cylinder 502 and the inner cavity of the upper cylinder 504 form the air compression chamber 506; one end of the elastic piece 505 is arranged in the lower cylinder 502, and the other end of the elastic piece 505 is propped against the upper cylinder 504; an exhaust vent 507 is provided at the top of the upper cylinder 504. The air compression chamber 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 chamber 506 is compressed and discharged from the air discharge holes 507, so that the lower cylinder 502 and the upper cylinder 504 can be slowly contracted to provide the resistance for the movable table 301 to descend. More specifically, the upper cylinder 504 is sleeved on the lower cylinder 502, an annular groove 513 is arranged on the outer side wall of the lower cylinder 502, and a sealing ring 508 closely attached to the inner wall of the upper cylinder 504 is connected to the annular groove 513. In other embodiments, the descent control device 5 may take the following form: the first sealing piece is a lower cylinder body 502 which is connected to the table frame 1 and is opened at the upper end, the second sealing piece is a piston rod which is in sliding fit in the lower cylinder body 502, the outer circumferential wall of the piston rod is in sealing fit with the inner wall of the lower cylinder body 502, an air compression cavity 506 is formed between the piston rod and the lower cylinder body 502, and an exhaust hole 507 is arranged on the lower cylinder body 502; the elastic piece 505 is placed in the lower cylinder 502, and the lower end of the elastic piece 505 abuts against the inner bottom wall of the lower cylinder 502, and the upper end of the elastic piece 505 abuts against the piston rod. In order to firmly fix the elastic member 505 and to smoothly slide between the upper cylinder 504 and the lower cylinder 502, a connecting column 512 extending in the longitudinal direction of the upper cylinder 504 is provided on the inner bottom wall of the upper cylinder 504, one end of the elastic member 505 is connected to the connecting column 512, and the other end of the elastic member 505 abuts against the inner bottom wall of the lower cylinder 502.

Referring again to fig. 5 and 6, as an embodiment of the present invention, the first sealing member includes a base 500, a connection seat 501 is provided at a lower end of the base 500, the connection seat 501 is connected with the table frame 1 by a screw, and a lower cylinder 502 is provided in the base 500; the base 500 is slidably sleeved with a housing 503, and the upper cylinder 504 is connected in the housing 503. The outer side wall of the base 500 is provided with a first protruding limiting block 510, the inner side wall of the shell 503 is provided with a second limiting block 511 which is matched with the first limiting block 510 for limiting, and when the shell 503 slides in a direction away from the base 500, the shell 503 can be prevented from being separated from the base 500. The outer side wall of the base 500 is provided with a plurality of ribs 509 distributed along the circumferential direction and extending longitudinally along the ribs, and the outer side wall of the ribs 509 is in sliding fit with the inner wall of the shell 503; the provision of the ribs 509 improves the mechanical strength of the descent control structure 5, and simultaneously makes the engagement between the base 500 and the housing 503 more compact without shaking during the relative sliding.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims

1. A lifting table, which comprises

A table frame and legs;

the table body is provided with a fixed table plate and a movable table plate, the fixed table plate is fixedly connected with a 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: the device comprises a first sealing piece, a second sealing piece, a first air compression cavity and a second air compression cavity, wherein the first sealing piece and the second sealing piece are connected in a sliding mode, the first sealing piece and the second sealing piece are mutually sealed, and an air exhaust hole communicated with the air compression cavity is formed in the first sealing piece or the second sealing piece; an elastic piece is arranged between the first sealing piece and the second sealing piece, and can enable the first sealing piece and the second sealing piece to be relatively unfolded and reset and simultaneously provide assistance for the movable table board in an initial opening state; the first sealing element and the second sealing element are arranged between the movable table plate and the table plate frame along a first direction, and are used for applying resistance to the movable table plate before the movable table plate descends to the lowest position so as to delay the descending speed of the movable table plate, and the first direction is the moving direction of the movable table plate relative to the table plate frame;

the first sealing piece is connected with the table plate frame, and the second sealing piece can be propped 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 can be propped against the table plate frame before the movable table plate is lowered to the lowest position.

2. A lifting table as claimed in claim 1, wherein: the first sealing piece is a lower cylinder body which is connected to the table plate frame and is opened at the upper end, the second sealing piece is an upper cylinder body which is in sliding fit with the lower cylinder body, and the inner cavity of the lower cylinder body and the inner cavity of the upper cylinder body form the air compression cavity; one end of the elastic piece is arranged in the lower cylinder, and the other end of the elastic piece is propped against the upper cylinder; the exhaust hole is arranged at the top of the upper cylinder body.

3. A lifting table as claimed in claim 2, wherein: the first sealing element comprises a base connected to the table frame, and the lower cylinder is arranged in the base; the base is sleeved with a shell in a sliding manner, and the upper cylinder is connected in the shell.

4. A lifting table according to claim 3, 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 longitudinally extend along the base, and the outer side wall of the convex ribs are in sliding fit with the inner wall of the shell.

5. A lifting table according to claim 3, wherein: the outer side wall of the base is provided with a first protruding limiting block, 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 the shell slides in the direction away from the base.

6. A lifting table as claimed in claim 2, wherein: and a sealing ring tightly attached to the inner wall of the upper cylinder body is arranged on the outer side wall of the lower cylinder body.

7. A lifting table as claimed in claim 2, wherein: the connecting column extending along the length direction of the upper cylinder body is arranged on the inner bottom wall of the upper cylinder body, one end of the elastic piece is connected with the connecting column, and the other end of the elastic piece abuts against the inner bottom wall of the lower cylinder body.

8. A lifting table as claimed 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.

9. A lifting table as claimed in claim 1, wherein: the movable table board is connected with a lock seat near the bottom of one end of the fixed table board, the lock seat is provided with a lock tongue in sliding fit, the movable table board is rotatably connected with a spanner, the spanner is connected with the lock tongue through a brake cable and used for controlling the lock tongue to extend out of or retract into the lock seat, and the side wall of the fixed table board is provided with a lock block for the lock tongue to be inserted in a matched mode.