CN113951631B - lift table - Google Patents

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

lift table

technical field

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

Background technique

At present, in order to meet the needs of users of different heights and ages, most of the desks or study desks in the prior art are set up as lifts, and a workbench that can be lifted and lowered independently is set on the desk board, also known as lift table, that is, The height of the table can be adjusted according to user needs. The structure of the lift table in the prior art generally includes a table board and table legs. The table board includes a fixed table board and a movable table board. There is a gap on the side close to the user, and the movable table is set in the gap, and a lifting assembly is provided between the movable table and the table frame, and the lifting assembly is used to adjust the movable table relative to the table frame. The height of the movable table; when using the movable table, raise the movable table, so that the user can stand and work; Fix the usable area of the table; there is a lock hook on the outer edge of the movable table, which can hook the bottom of the table frame when the movable table is lowered to the lowest height, thereby limiting the movable table and making the movable table The tabletop remains in the lowest position. There are some deficiencies in the actual use of the lift table of this prior art: when the movable table is lowered, the user generally holds both sides of the movable table with both hands and exerts force downwards to overcome the supporting force of the lifting assembly to make the movable table When the movable table is lowered to the minimum height and the force used by the user is too large or too strong, there will be a danger of pinching hands between the edge of the movable table and the edge of the fixed table, and the user experience is poor.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the above defects of the prior art, and provide a lift table that can prevent hands from being pinched when the movable table is lowered, has high safety, and has a good user experience.

The technical solution of the present invention is to provide a lift table with the following structure: it includes

Table frames and legs;

The table body has a fixed table and a movable table, the fixed table is fixedly connected with the table frame, and a lifting assembly is connected between the movable table and the table frame, and the lifting assembly is used to adjust the movable table The height of the plate relative to the fixed table top; it also includes a slow-down structure, and the slow-down structure includes two first and second seals that are slidably connected to each other, and the first seal and the second seal There is an elastic member that can make the first sealing member and the second sealing member expand and reset relative to each other. The first sealing member and the second sealing member are arranged between the movable table and the table frame along the first direction. Before the movable table board descends to the lowest position, resistance is applied to the movable table board to slow down the descending speed of the movable table board, and the first direction is the moving direction of the movable table board relative to the table board frame.

Preferably, the first sealing member is connected with the table frame, and the second sealing member is set to be against the movable table before the movable table is lowered to the lowest position; or the first sealing member is connected with the movable table, and the second sealing member be arranged to abut against the table frame before the movable table is lowered to the lowest position;

Wherein, the first sealing member and the second sealing member are mutually sealed to form an air compression chamber, and the first sealing member or the second sealing member is provided with an exhaust hole communicating with the air compression chamber.

Preferably, the slow-down structure is arranged between the movable table and the table frame, and the first sealing member is connected with the table frame or the movable table, and the second sealing member is arranged to lower the movable table to the lowest position. It can be offset against the movable table or table frame before. The slow-down structure is arranged between the movable table and the table frame, which can be vertically set or slightly inclined at a certain angle. The slow-down structure is offset against the movable table or the table frame to delay The descending speed of the movable table; of course, the slow-down structure can also directly act on the lifting component, and apply resistance to the lifting component before the lifting component descends to the lowest position, so as to slow down the descending speed of the lifting component, so as to allow the user’s fingers to break away from the movable table Take ample time to avoid pinching your fingers due to excessive force or excessive force.

Preferably, the first sealing member is a lower cylinder connected to the table frame with an open upper end, the second sealing member is an upper cylinder slidingly fitted on the lower cylinder, the inner cavity of the lower cylinder and the upper cylinder The inner cavity of the cylinder forms the air compression chamber; one end of the elastic member is arranged in the lower cylinder, and the other end of the elastic member is against the upper cylinder; the exhaust hole is arranged on the top of the upper cylinder. In this way, the air compression chamber is formed by the sealing fit between the lower cylinder and the upper cylinder. When the lower cylinder and the upper cylinder slide relative to each other, the air in the air compression chamber is compressed and discharged from the exhaust hole to realize the lower cylinder. The main body and the upper cylinder body can shrink slowly to provide resistance for the movable table board to descend, and the structure is simple and easy to use.

Preferably, the first sealing member includes a base connected to the table frame, the lower cylinder is disposed in the base; the base is slidingly sleeved with a housing, and the upper The cylinder is connected in the housing. This arrangement plays a guiding role in the movement between the lower cylinder and the upper cylinder, ensuring the stability of the movement between the lower cylinder and the upper cylinder.

Preferably, the outer wall of the base is provided with a plurality of raised ribs distributed along its circumference and extending longitudinally, and the outer side wall of the raised ribs is slidably engaged with the inner wall of the housing. The arrangement of the convex ribs improves the mechanical strength of the slow-down structure, and at the same time makes the cooperation between the base and the housing more compact, and there is no shaking when sliding relative to each other.

Preferably, the outer wall of the base is provided with a protruding first stopper, and the inner wall of the housing is provided with a second stopper matched with the first stopper. When the body slides away from the base, the housing can be prevented from detaching from the base. The cooperation of the first limit block on the outer wall of the base and the second limit block on the inner wall of the housing can effectively prevent the housing from detaching from the base, ensuring the safety of the slow-down structure.

Preferably, the outer wall of the lower cylinder is provided with a sealing ring closely attached to the inner wall of the upper cylinder. The setting of the sealing ring makes the sealing effect between the lower cylinder body and the upper cylinder body better.

Preferably, the inner bottom wall of the upper cylinder is provided with a connecting column extending along the length direction of the upper cylinder, one end of the elastic member is connected to the connecting column, and the other end of the elastic member is connected to the inner bottom wall of the lower cylinder. offset. Such setting makes the connection of the elastic member more stable, so that the elastic member will not deviate when it is expanded or compressed.

Preferably, when the movable table is lowered to the lowest position, the top of the movable table is flush with the top of the fixed table. Such arrangement can expand the effective use area of the fixed table when the movable table is lowered to the lowest position, so as to meet the needs of users.

As a preference, a lock seat is connected to the bottom of the movable table close to one end of the fixed table, and a lock tongue is slidably fitted on the lock seat, and a wrench is rotatably connected to the movable table, and the wrench passes through the lock wire It is connected with the lock tongue and is used to control the lock tongue to protrude or retract the lock seat. The side wall of the fixed table is provided with a lock block for the lock tongue to be mated and inserted. In this way, when the movable table is lowered to the lowest position, the dead bolt is locked with the lock block, so that the movable table is locked at the lowest position; The lock tongue can be separated from the lock block, and the operation is very convenient.

After adopting the above structure, compared with the prior art, the lifting platform table of the present invention has the following advantages: the lifting platform table is provided with a slow-down structure, and the slow-down structure gives the movable table a Or the lift assembly exerts resistance to slow down the lowering speed of the movable table, so that the user's fingers can be released from the edges of the movable table at both ends before the user holds both ends of the movable table tightly with both hands to lower the movable table to the lowest position, thereby avoiding There is no risk of hand pinching, and the safety is high; the first seal and the second seal of the slow-down structure can overcome the elastic force of the elastic part and move toward each other when bearing axial pressure, and the air in the air compression chamber is compressed and discharged The air holes are slowly discharged, so that the slow-down structure can achieve the purpose of low-speed contraction movement, thereby delaying the falling speed of the movable table; when the movable table rises from the lowest position, the slow-down structure makes the first The sealing member and the second sealing member are relatively expanded and reset, and at the same time, provide assistance to the movable table in the initial opening state, so that the movable table can be opened quickly and form a gap with the fixed table for fingers to penetrate, so that the fingers can hold the movable table tightly The board goes up.

Description of drawings

Fig. 1 is a structural schematic diagram of a lift table according to the present invention.

Fig. 2 is a structural schematic diagram of another angle of a lift table according to the present invention.

Fig. 3 is a structural schematic diagram of a slow-down structure of the lift table according to the present invention.

Fig. 4 is a schematic diagram of the assembly structure of the slow-down structure of the lift table according to the present invention.

Fig. 5 is a schematic diagram of another angle assembly structure of the slow-down structure of the lift table of the present invention.

Fig. 6 is a schematic cross-sectional structure diagram of a lift table according to the present invention.

as the picture shows:

1. Table frame, 2. Table legs, 3. Table body, 300. Fixed table, 301. Movable table, 4. Lifting assembly, 400. First bracket, 401. Second bracket, 5. Slow down Structure, 500, base, 501, connection seat, 502, lower cylinder, 503, shell, 504, upper cylinder, 505, elastic member, 506, air compression chamber, 507, exhaust hole, 508, sealing ring , 509, convex rib, 510, first limit block, 511, second limit block, 512, connecting column, 513, annular groove, 6, lock seat, 600, dead bolt, 601, wrench, 602, lock block , 7, gas spring.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1 and Fig. 2, a lift table of the present invention comprises a table frame 1, a table leg 2 and a table body 3; the table frame 1 is a hollow rectangular parallelepiped frame and the top of the frame is opened. , the table body 3 includes a fixed table 300 and a movable table 301, the fixed table 300 is fixedly connected to the table frame 1, and a lifting assembly 4 is connected between the movable table 301 and the table frame 1, and the lifting assembly 4 is used for Adjust the height of the movable table 301 relative to the fixed table 300; in this embodiment, the lifting assembly 4 includes two brackets whose middle parts are hinged to be X-shaped: a first bracket 400 and a second bracket 401, and the first bracket 400 The upper end of the movable table 301 is rotatably connected, and the lower end of the first bracket 400 is slidably fitted on the table frame 1; the lower end of the second bracket 401 is rotatably connected to the table frame 1, and the upper end of the second bracket 401 is slidably fitted on the On the movable table 301; a controllable gas spring 7 is provided between the lifting assembly 4 and the movable table 301, which is used to provide the lifting force that the movable table 301 rises, so that the movable table 301 is relative to the fixed table 300. Height adjustable. In other embodiments, the lifting assembly 4 can also be a liftable lead screw nut pair, a Z-shaped lifting bracket, etc.; the bottom of the movable table 301 close to the end of the fixed table 300 is connected with a lock seat 6, said A lock tongue 600 is slidably fitted on the lock base 6, and a wrench 601 is rotatably connected to the movable table 301. The wrench 601 is connected to the lock tongue 600 through a brake line, and is used to control the lock tongue 600 to extend or retract the lock. The seat 6, the side wall of the fixed table 300 is provided with a lock block 602 for mating and inserting the lock tongue 600 . When the movable table 301 descends to the lowest position, the dead bolt 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 descends to the lowest position, the top of the movable table 301 and The top of the fixed table 300 is flush with each other. When the movable table 301 is lowered to the lowest position, the effective use area of the fixed table 300 can be expanded to meet the needs of users. In this embodiment, an openable drawer is provided under the fixed table 300 .

Referring again to Fig. 1 and Fig. 2, a lifting platform table of the present invention also includes a slow-down structure 5, and the slow-down structure 5 includes two first seals and second seals that are relatively slidably connected, and the first seal There is an elastic member 505 between the first sealing member and the second sealing member, which can make the first sealing member and the second sealing member expand and reset relative to each other. The first sealing member and the second sealing member are arranged on the movable table along the first direction. Between 301 and the table frame 1, it is used to apply resistance to the movable table 301 before the movable table 301 drops to the lowest position to delay the descending speed of the movable table 301, and the first direction is that the movable table 301 is opposite to the table. The direction of motion of the plate frame 1 is also the height direction of the lift table in FIG. 1 .

Referring to Fig. 2 to Fig. 6, as an embodiment of the present invention, the first seal is connected with the table frame 1, and the second seal is set to be able to connect with the movable table before the movable table 301 is lowered to the lowest position. 301 against each other; or the first seal is connected with the movable table 301, and the second seal is set to be offset against the table frame 1 before the movable table 301 is lowered to the lowest position; wherein, the first seal and the second The seals are sealed against each other and form an air compression cavity 506 , and the first seal or the second seal is provided with an exhaust hole 507 communicating with the air compression cavity 506 . In this embodiment, the slow-down structure 5 is vertically arranged in the table frame 1 and directly below the movable table 301; of course, the slow-down structure 5 can also directly act on the lifting assembly 4, and when the lifting assembly 4 descends to Apply resistance to the lifting assembly 4 before the lowest position, to slow down the descending speed of the lifting assembly 4, to give the user's fingers a free time to break away from the movable table 301, and avoid pinching fingers due to excessive force and excessive force.

Specifically, the first sealing member and the second sealing member of the slow-down structure 5 can overcome the elastic force of the elastic member 505 and move toward each other when subjected to axial pressure, and the air in the air compression chamber 506 is compressed and passes through the exhaust hole 507 Slowly discharge, so that the slow-down structure 5 realizes the purpose of low-speed contraction movement, thereby delaying the descending speed of the movable table 301; The first seal and the second seal are relatively expanded and reset, and at the same time, the movable table 301 is provided with an initial opening state boost, so that the movable table 301 can be quickly opened and a gap for fingers to be inserted is formed between the movable table 301 and the fixed table 300, In order to grasp the movable table board 301 with fingers and carry out the ascending operation. In this embodiment, before the movable table 301 is lowered to the lowest position, it generally means that the movable table 301 is lowered to a position 2-10 cm away from the fixed table, so as to accommodate fingers at least.

In this embodiment, referring to Fig. 2 to Fig. 6 again, the first sealing member of the slow-down structure 5 is a lower cylinder 502 connected to the table frame 1 with an open upper end, and the second sealing member is The upper cylinder 504 slidingly fitted on the lower cylinder 502, 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 member 505 is arranged in the lower cylinder 502, The other end of the elastic member 505 is against the upper cylinder 504 ; the exhaust hole 507 is arranged on the top of the upper cylinder 504 . The air compression chamber 506 is formed by the sealing fit between the lower cylinder body 502 and the upper cylinder body 504. When the lower cylinder body 502 and the upper cylinder body 504 slide relative to each other, the air in the air compression chamber 506 is compressed and discharged from the exhaust hole 507. To realize that the lower cylinder 502 and the upper cylinder 504 can shrink slowly to provide resistance for the movable table 301 to descend. More specifically, the upper cylinder 504 is sheathed on the lower cylinder 502 , and the outer wall of the lower cylinder 502 is provided with an annular groove 513 , and a sealing ring 508 closely attached to the inner wall of the upper cylinder 504 is connected in the annular groove 513 . In other embodiments, the slow-down structure 5 can also adopt the following form: the first sealing member is a lower cylinder 502 connected to the table frame 1 with an open upper end, and the second sealing member is a sliding fit in the lower cylinder 502 The piston rod, the outer peripheral wall of the piston rod is sealed and bonded to the inner wall of the lower cylinder 502, an air compression chamber 506 is formed between the piston rod and the lower cylinder 502, and the exhaust hole 507 is arranged on the lower cylinder 502; the elastic member 505 is placed Inside the lower cylinder 502, the lower end of the elastic member 505 is against the inner bottom wall of the lower cylinder 502, and the upper end of the elastic member 505 is against the piston rod. In order to fix the elastic member 505 firmly and make the sliding between the upper cylinder 504 and the lower cylinder 502 more smooth, a connecting column 512 extending along the length 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 is against the inner bottom wall of the lower cylinder 502 .

Referring again to Fig. 5 and Fig. 6, as an embodiment of the present invention, the first seal includes a base 500, the lower end of the base 500 is provided with a connecting seat 501, and the connecting seat 501 is connected to the table frame 1 by screws The lower cylinder 502 is set in the base 500; the base 500 is slidably fitted with a housing 503, and the upper cylinder 504 is connected in the housing 503. The outer wall of the base 500 is provided with a protruding first stopper 510, and the inner wall of the casing 503 is provided with a second stopper 511 matched with the first stopper 510. When sliding away from the base 500 , the housing 503 can be prevented from detaching from the base 500 . The outer wall of the base 500 is provided with a plurality of ribs 509 distributed along its circumference and extending longitudinally, and the outer wall of the ribs 509 slides and fits with the inner wall of the housing 503; the arrangement of the ribs 509 improves the The mechanical strength of the slow-down structure 5 is improved, and at the same time, the cooperation between the base 500 and the housing 503 is more compact, and there is no shaking when sliding relative to each other.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (9)

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.