CN112932066B

CN112932066B - Turnover transmission assembly for lifting tabletop

Info

Publication number: CN112932066B
Application number: CN202110253522.2A
Authority: CN
Inventors: 孟振亮; 张毓云; 郑旦; 姜秋实
Original assignee: Yudou Shanghai Intelligent Technology Co ltd
Current assignee: Yudou Shanghai Intelligent Technology Co ltd
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2022-12-27
Anticipated expiration: 2041-03-09
Also published as: CN112932066A

Abstract

The invention discloses a lifting desktop turnover transmission assembly, which comprises a telescopic leg part and a main body frame; the main body frame is configured as a supporting base of the table top plate; the main body frame is configured to be a common connecting end of different telescopic legs so as to assemble the turnover frame; the turnover frame is arranged on one side of the telescopic leg part through a pivot shaft and is turned on and off in the direction of the side by taking the pivot shaft as a rotation center; the turnover frame is turned over to be horizontally arranged so that the table top plates at two sides are spliced into a complete table top plate; the gas springs are connected with the turnover frame and the main body frame through the pivoting ends, and at least two gas springs are simultaneously telescopic/locked so that at least one gas spring can be used as an operation safety of other gas springs; the unlocking switch is configured as a control switch of the gas spring; each unlocking switch corresponds to an air spring. The structure controls the turnover of the table top board through the arrangement structure of the double-damping air spring, thereby increasing the double-safety performance and reducing the potential safety hazard possibly caused by misoperation and structural failure.

Description

Turnover transmission assembly for lifting tabletop

Technical Field

The invention relates to the field of intelligent lifting table structures, in particular to a lifting table top turnover transmission assembly.

Background

Traditional desk is fixed structure, the desktop of desk is planar structure, not only can not incline, also can not go up and down, consequently, there are two drawbacks, on the one hand people in the use, can feel tired because of the time overlength of bending over a desk, especially more inconvenient to the use, on the other hand is because the desk in some families or the office space is not specific to give one person and uses, and everyone's height is all different, children's height can be along with the increase of age and constantly increase, so this kind of desk just can't satisfy the high demand under the different states. In addition, as the use requirement changes, the desktop may be required to have an inclination function, for example, the desktop is lifted upwards to read or draw/draw, and the user can use the desktop in a horizontal view.

The lifting table is generally divided into an electric lifting table and a manual lifting table, and the manual lifting table achieves the effect of table lifting adjustment or table top adjustment through a manual operation mechanical transmission structure. Although the purpose of flexible adjustment is achieved, the operation is troublesome and laborious. The automatic lifting table generally uses electricity as a power source, the height of the lifting table is adjusted by controlling a mechanical device through a motor, and the height of the lifting table can also be adjusted by controlling an air pressure rod or a hydraulic rod through a compressor. Its advantages are low electric consumption, stable and beautiful pattern, and wide lifting range. However, such automatic lifting tables still cannot meet the increasingly diversified use requirements. For example, for table top adjustment controls: translation or turnover of the table top. These functions are needed to be developed and synchronized to meet the requirements of the public.

For example, the invention patent of China, namely an intelligent lifting table, has the application number of 2020204029122, and discloses a lifting left leg, a table top structure and the like. This lift table can carry out stepless regulation and control through electric control to use angle and height, satisfies the user demand of pluralism. However, the table top is of a lift-up type, i.e., the table top is lifted up by a transmission member in the table top structure, thereby achieving the effect of tilting the table top. Thus, the table has a huge structure, and the whole table has overlarge mass and is not easy to move. Moreover, the comprehensive control mode does not completely meet the market demand, and some simplified structures and functions can better meet the requirements of users and are easier to control in cost.

For example, the invention patent of China, namely a reversible desk with lifting function, application number 2019214199305, discloses a desk comprising a base and supporting legs, wherein the upper parts of the supporting legs are fixedly provided with fixed desk plates; the bottom of the fixed table plate is positioned at the outer sides of the left supporting leg and the right supporting leg and is fixedly provided with an overturning fixed plate. The inner sides of the middle parts of the left supporting leg and the right supporting leg are respectively hinged with a driving cylinder. The lifting table is convenient to use and wide in application range. However, the turnover force arm of the turnover fixing plate with the structure is short, so that the structural arrangement is complicated, and power directly acts on the table plate, so that the service life of the table top is influenced. The cylinder directly acts on the lifting leg, and the structural stress is not good, so that the overall stability of the lifting table is poor.

Disclosure of Invention

The invention aims to: the lifting desktop overturning transmission assembly is provided, so that the problem that the lifting desktop is overturned downwards from the horizontal direction is solved; furthermore, the overturning structure is controlled in the optimal moment arm stroke, so that the problems of asynchronous transmission and poor stability caused by redundant structure are avoided.

The technical scheme of the invention is as follows: a lifting desktop turnover transmission assembly comprises a telescopic leg for supporting the lifting of a desktop plate and a main body frame for jacking the telescopic leg; the telescopic leg part can be selected to be a manual telescopic structure or an electric telescopic structure, and the lower end of the telescopic leg part is supported on the bottom surface or is stably supported by a support leg at the bottom; the upper end of the telescopic leg part is a telescopic movable end which is connected with the main body frame.

The main body frame is configured as a supporting base of the table top, and the main body frame is integrated with the upper ends of the telescopic legs; and the main body frame serves as a common connection end for different telescopic legs to assemble the roll-over frame. On the one hand, the synchronous lifting of the telescopic legs depends on software program control, and the main body framework can ensure that the telescopic legs on the two sides are synchronously lifted, so that the structural stability is improved. On the other hand, the main body frame can be used as a structural carrier, so that the butt joint redundancy of the table top plate and the turnover frame is reduced, and the distance between the whole gravity center of the structure and the gravity center of the telescopic leg is reduced as far as possible.

A roll-over frame, arranged on one side of the telescoping legs by means of a pivot axis, known from the state of the art, typically the use side of the lifting table. Therefore, the lifting table has a relatively obvious C-shaped structure under the arrangement relation, and is superior to the I-shaped structure in the prior art from the perspective of maximizing the utilization of the space below the table top plate and optimizing the structural arrangement.

The turnover frame is turned on and off in the use side direction of the lifting table by taking the pivot shaft as a rotation center, the whole gravity center of the lifting table is transversely changed in the process, and after the lifting and the lowering of the telescopic legs are combined, the height of the whole gravity center can be changed. Therefore, it would be most advantageous to solve the above-described problems when the main body frame is employed as the supporting base, and the center of gravity of the main body frame is in the same vertical plane as the centers of gravity of all the telescopic legs. Because the telescopic legs and the main body frame are used in structural support and connection, the overall center of gravity thereof is maintained in the direction of the base support. Further, when the turnover frame is lifted, even if the desktop plate is lifted to the maximum height, the offset of the whole gravity center and the center of the support leg does not exceed 15-40% of the size of the desk in the offset direction, so that absolute stability in the using state can be maintained. In this case, the overall center of gravity will not shift too much when the user presses the table top, which will certainly reduce the fatigue of the joints between the legs and the legs, and thus increase the durability and life of the structure.

Desktop plates are arranged on the desktop plate, the turnover frame and the main body frame, the turnover frame is turned over to be arranged horizontally, so that the desktop plates on two sides are spliced into a complete desktop plate, and the desktop plates on two sides can be basically used flatly after being spliced. Moreover, the distributed desktop plates can be independently combined according to use requirements, the design sense is stronger, and the experience sense of a user is better.

And the gas spring is connected with the turnover frame and the main body frame through the pivoting end and stretches to enable the turnover frame to be turned over for opening and closing. The gas spring serves as the primary travel member that provides a roll-over support for the roll-over frame/table top. Meanwhile, the gas spring can be suspended at any using angle according to the using requirement. The locking is reliable and stable, and the response is rapid, and possesses certain buffering effect certainly, avoids the collision damage of structure self. In the scheme, the number of the arranged gas springs is at least two. At least two gas springs are formed to be simultaneously telescopic/simultaneously lockable, so that at least one gas spring is secured as an operation of the other gas springs.

Specifically, two gas springs are arranged to act in two, the first and second gas springs increasing stability. Compared with a fulcrum of one gas spring, the two gas springs can have two fulcrums, the arrangement positions can be more selected, and the supporting stability and the supporting strength of the table top plate are superior. The arrangement of the second and at least two gas springs can have the effect of a mutual locking safeguard. If the gas spring is used, misoperation is easy to occur under the condition of unintentional touch. The problem can be avoided by selecting two air springs, and a double-insurance effect can be achieved. If the desktop plate needs to be turned over, the unlocking switches of the two gas springs need to be pressed simultaneously, so that the two gas springs can be unlocked simultaneously.

The unlocking switches are configured to be control switches of the gas springs, each unlocking switch corresponds to one gas spring, and the working state of each gas spring can be controlled by operating the unlocking switches. Generally, two damping gas springs and two unlocking switches are adopted in the structure; and the two unlocking switches are respectively arranged at two sides of the using position on the table panel. When the table is used, the lifting of the table plate can be controlled by operating the unlocking switch.

Preferably, the gas spring is a damped gas spring. The damping air spring can provide self-buffering capacity, so that the overturning effect is better, stable and smooth.

Preferably, the turnover frame includes a first side edge portion, a second side edge portion and a connecting portion; and a frame structure is formed between the first side edge part and the second side edge part through a connecting part. The combined structure can enhance the supporting effect and even the weight of each supporting direction; on the other hand, the structure can be conveniently disassembled or assembled, and great advantages are brought to product packaging and transportation.

Preferably, the outer side surface of the first side edge part is assembled to the main body frame through the pivot shaft and the bearing assembly so as to increase the moment arm of the overturning fulcrum and the pushing fulcrum.

Preferably, one end of the gas spring is assembled to the turn frame through the shaft pin member, and the other end thereof is assembled to the main body frame through the shaft pin member.

Preferably, the overturning angle of the overturning frame is 0 to 90 degrees.

Preferably, the bearing assembly comprises a bearing seat, a bearing and a clamp spring.

The invention has the advantages that:

1. the structure reduces the gravity center distribution condition of the main structure through reasonable structural arrangement, thereby avoiding overlarge offset of the whole gravity center and the supporting center of the lifting table as much as possible. The stability of the structure is kept, and the stability can be superior to the similar products even under various using states.

2. The support cooperation that this structure passes through the upset frame can realize different angles is adjusted, and the stability and the response characteristics of air spring can satisfy user's whole demands at present, and the structure is lighter moreover, and the arrangement of stress point obtains rational planning, accords with ergonomic and mechanics theory, and user experience feels also more outstanding.

3. According to the structure, the turnover control of the table top plate is carried out through the arrangement structure of the double-damping air springs, the rigidity unlocking of the damping air springs can be carried out only by simultaneous operation, the safety performance is improved, and the potential safety hazard possibly caused by misoperation and structural failure is reduced.

Drawings

The invention is further described with reference to the following figures and examples:

FIG. 1 is an assembly view of a lift table tilt drive assembly of the present invention;

FIG. 2 is an exploded view of the lift table tilt drive assembly of the present invention;

FIG. 3 is a diagram of the tilting state of the tilting transmission assembly of the elevating tabletop of the present invention;

wherein: 1. a telescopic leg; 2. a main body frame; 3. turning over the frame; 31. a first side edge portion; 32. a second side edge portion; 33. a connecting portion; 34. a pivotal shaft; 4. a gas spring; 41. a first pivot end; 42. a second pivot end; 5. a pressure sensor; 51. a bearing seat; 52. a bearing; 53. a clamp spring; 6. and (7) supporting legs.

Detailed Description

Preferred embodiment 1 of the present invention:

the lifting desktop turnover transmission assembly comprises a telescopic leg part 1 for supporting the lifting of the desktop board and a main body frame 2 for jacking the telescopic leg part 1; the main body frame 2 is configured as a support base of a table top.

A main body frame 2 configured as a common connection end of different telescopic legs to assemble the roll-over frame 3.

The tilt frame 3 is disposed on one side of the extendable leg 1 via a pivot shaft 34, and is opened and closed in a tilt manner in the direction of the side with the pivot shaft 34 as a rotation center.

Desktop plates are arranged on the desktop plate, the turnover frame 3 and the main body frame 2, and the turnover frame 3 is turned over and horizontally arranged so that the desktop plates on two sides are spliced into a complete desktop plate.

The gas spring 4 is connected with the turnover frame 3 and the main body frame 2 through a pivoting end, and the gas spring 4 stretches to enable the turnover frame 3 to be turned over for opening and closing; at least two gas springs 4 are formed to be simultaneously telescopic/simultaneously lockable, so that at least one gas spring is secured as an operation of the other gas springs.

An unlocking switch configured as a control switch of the gas spring 4; each unlocking switch corresponds to one gas spring 4, and the two unlocking switches are respectively arranged at two sides of the using position on the table top plate.

Furthermore, the gas spring is a damping gas spring.

Further, the center of gravity of the main body frame 2 and the centers of gravity of all the extendable legs 1 are located in the same vertical plane.

Further, the flip frame 3 includes a first side edge portion 31, a second side edge portion 32, and a connecting portion 33; a frame structure is formed between the first side edge portion 31 and the second side edge portion 32 by a connecting portion 33.

Further, the outer side surface of the first side edge part 31 is assembled to the main body frame 2 through the pivot shaft 34 and the bearing assembly 5 to increase the moment arm of the overturning fulcrum and the push-pull fulcrum; the bearing assembly 5 includes a bearing seat 51, a bearing 52 and a circlip 53.

Further, the pivoting end is a shaft pin piece; one end of the gas spring 4 is fitted to the reversing frame 3 through a shaft pin member, and the other end thereof is fitted to the main body frame 2 through a shaft pin member.

Further, the overturning angle of the overturning frame 3 is 0 to 90 degrees.

Further, two gas springs 4 are included between the turn frame 3 and the main body frame 2, and the two gas springs 4 are symmetrically disposed at a center line of the turn frame 3.

Preferred embodiment 2 of the present invention:

a lifting desktop turnover transmission assembly comprises a telescopic leg part 1, a main body frame 2, a turnover frame 3, a desktop plate and a supporting leg 6.

The telescopic leg part 1 is of a telescopic structure, an electric control structure is preferably selected, so that the telescopic leg part is convenient to control, stable in transmission and rapid in braking. The lower end of the telescopic leg part 1 is supported on a supporting leg 6, and the supporting leg 6 is contacted with the ground to maintain stability; and, an unobstructed structure is formed between the two support legs 6, which is different from the arrangement mode between the support legs in the prior art, and the structure can facilitate the chair to be pushed between the two support legs, thereby saving the arrangement space. The upper end of the telescopic leg 1 is a main body frame 2, and the main body frame 2 is used as a supporting base body for connecting the table top plate.

The main frame 2, which comprises two square tubes in this embodiment, is assembled directly to the extending end of the extendable leg 1. And the main body frame 2 is simultaneously connected with the extending ends of the left and right telescopic leg parts 1, so that the horizontal arrangement is ensured. Thus, the main body frame 2 is configured as a common connection end of different telescopic legs to assemble the flip frame 3. By this arrangement, the center of gravity of the main body frame 2 and the center of gravity of the telescopic leg 1 can be maintained on one vertical surface. The support stability of the lifting table main body is superior to other arrangement modes.

The tilt frame 3 is arranged on the telescopic leg 1 side through a pivot shaft 34, and is opened and closed in a tilt-type manner in the side direction with the pivot shaft 34 as a rotation center. The roll-over frame 3 comprises a first side part 31, a second side part 32 and a connecting part 33, a frame structure is formed between the first side part 31 and the second side part 32 through the connecting part 33, as shown in fig. 2, the roll-over frame 3 is in a shape of 'ii', and the outer side surface of the first side part 31 is assembled to the main body frame 2 through a pivot shaft 34 and a bearing assembly 5 so as to increase the moment arm of a roll-over fulcrum and a push-pull fulcrum. Since the distance between the first side portion 31 and the main body frame 2 is only the diameter of the bearing member, the amount of center of gravity offset between the tilt frame 3 and the telescopic leg 1 can be greatly reduced, and the entire center of gravity can be ensured to be concentrated near the telescopic leg. Even when the turnover frame 3 is lifted, the gravity center change is smaller than that of other structures, the stability is better, and particularly when the turnover frame is combined with lifting and pressing, the gravity center offset is small, and the instability condition is greatly reduced.

According to the design, when the turnover frame 3 is lifted, even if the table top plate rises to the maximum height, the offset of the whole gravity center and the center of the support leg cannot exceed 15 to 40 percent of the size of the table in the offset direction, and under the condition, when a user presses the table top plate, the comprehensive gravity center cannot be excessively offset, so that the service fatigue value of the butt joint of the telescopic leg and the support leg can be reduced undoubtedly, and the durability and the service life of the structure are further improved. The common use height of the table is 80 to 120cm, which is a common work height conforming to human engineering. When the table top is lifted for use, the height of the table top can rise to about 140 to 160cm. Therefore, as the height rises, the center also shifts upward. From the mechanics, the acting point at the bottom of the supporting leg is taken as a fulcrum, and the angle of the force arm changes along with the deviation of the central height, so that the acting point on the table top plate can influence the stability of the whole table (namely, the table top plate is easy to roll over). When the offset between the whole gravity center and the center of the support leg is controlled to be 15 to 40 percent (the moment arm angle is controlled to be 45 +/-5 degrees), the situation can be greatly reduced. Moreover, the non-vertical bearing of the acting point at the bottom of the support leg can be reduced to a certain extent, the integral bearing strength of the support leg is controlled to a certain extent, and the service durability of the support leg is improved.

The bearing assembly 5 comprises a bearing seat 51, a bearing 52 and a clamp spring 53, the bearing seat 51 is connected to the side surface of the main body frame 2, the bearing 52 is installed in the bearing seat 51 through the clamp spring 53, and the turnover frame 3 is assembled on the bearing 52 through the pivot shaft 34. Under the assembly of the bearing assembly 5, the turnover frame 3 in the embodiment can realize 0 to 90-degree turnover, namely, turnover from a horizontal state to a vertical drooping state.

Desktop plates are arranged on the desktop plate, the turnover frame 3 and the main body frame 2, and the turnover frame 3 is turned over and horizontally arranged so that the desktop plates on two sides are spliced into a complete desktop plate. In this embodiment, the desktop plates on both sides need to maintain the same levelness, so that the working surface can be smooth. The joint of the two table top plates needs to pay attention to the gap, so that the table top plates form a continuous surface as far as possible.

The gas spring 4 is connected to the roll-over frame through a first pivot end 41, the gas spring 4 is connected to the main body frame 2 through a second pivot end 42, and the gas spring 4 is extended and contracted to turn over the roll-over frame 3 for opening and closing. The pivot end adopts a shaft pin part, in the embodiment, two gas springs 4 are arranged between the turnover frame 3 and the main body frame 2, the two gas springs 4 are symmetrically arranged by the central line of the turnover frame 3, and the two gas springs 4 are simultaneously stretched/locked, so that one gas spring 4 can be used as the operation safety of the other gas springs 4. By analogy, if three air springs are arranged, the three air springs need to be controlled simultaneously to realize overturning adjustment, and at least one air spring can be locked during misoperation, so that potential safety hazards are avoided.

Specifically, two or more gas springs are arranged to function as: the first and second gas springs may increase stability. Compared with a fulcrum of one gas spring, the two gas springs can have two fulcrums, the arrangement positions can be more selected, and the supporting stability and the supporting strength of the table top plate are superior. The arrangement of the second and at least two gas springs can have the effect of a mutual locking safeguard. If the gas spring is used, misoperation is easy to occur under the condition of unintentional touch. The two gas springs are selected to avoid the problem, and the double-safety effect can be achieved. If the desktop plate needs to be turned over, the unlocking switches of the two gas springs need to be pressed simultaneously, so that the two gas springs can be unlocked simultaneously.

The unlocking switches are configured to be control switches of the gas springs 4, each unlocking switch corresponds to one gas spring, and the working state of each gas spring can be controlled by operating the unlocking switches. Generally, two damping gas springs and two unlocking switches are adopted in the structure; and the two unlocking switches are respectively arranged at two sides of the using position on the table panel. When the table is used, the lifting of the table plate can be controlled by operating the unlocking switch.

Based on the structure, when the turnover arrangement structure of the lifting table is used, the table top plate can be turned over by 0 to 90 degrees through the air spring. When the sitting posture is used, the turnover frame 3 drives the table top plate to be lifted to a horizontal state, and the sitting posture height is adjusted by adjusting the height of the telescopic legs. When the desk is used in a standing position, the turnover frame 3 drives the desktop plate to be lifted up by 0 to 90 degrees (an inclined state can be adjusted to an optimal use angle according to operation requirements), and meanwhile, the height of the desk is adjusted to the standing position by adjusting the telescopic legs 1 (similar to a drawing board form).

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed herein be covered by the appended claims.

Claims

1. The lifting desktop turnover transmission assembly comprises a telescopic leg part for supporting the lifting of the desktop board and a main body frame for jacking the telescopic leg part; the method is characterized in that: the main body frame is configured as a supporting base of a table top;

a main body frame configured as a common connection end of different telescopic legs to assemble the roll-over frame;

the turnover frame is arranged on one side of the telescopic leg part through a pivot shaft and is turned on and off in the direction of the side by taking the pivot shaft as a rotation center;

the turnover frame and the main body frame are both provided with desktop plates, and the turnover frame is turned over to be horizontally arranged so that the desktop plates on two sides are spliced into a complete desktop plate;

the gas springs are connected with the turnover frame and the main body frame through pivoting ends, and at least two gas springs are simultaneously stretched and locked so that at least one gas spring serves as an operation safety of other gas springs;

an unlocking switch configured as a control switch of the gas spring; each unlocking switch corresponds to one gas spring;

the offset between the whole gravity center of the lifting table and the center of any supporting leg is controlled within 15 to 40 percent, and the angle of the force arm of the turnover frame and the telescopic leg is controlled within 45 +/-5 degrees.

2. The elevating tabletop turnover transmission assembly of claim 1, wherein: the gas spring comprises a damped gas spring.

3. The elevating tabletop turnover transmission assembly of claim 1, wherein: the gas springs are symmetrically distributed by taking the center line of the turnover frame as a symmetric axis.

4. The elevating tabletop turnover transmission assembly of claim 1, wherein: the gravity center of the main body frame and the gravity centers of all the telescopic legs are positioned in the same vertical plane.

5. The elevating tabletop turnover transmission assembly of claim 1, wherein: the turnover frame comprises a first side edge part, a second side edge part and a connecting part; and a frame structure is formed between the first side edge part and the second side edge part through a connecting part.

6. The elevating tabletop turnover transmission assembly of claim 5, wherein: the outer side face of the first side edge portion is assembled to the main body frame through the pivot shaft and the bearing assembly so as to increase the force arm of the overturning fulcrum and the push-pull fulcrum.

7. The elevating tabletop turnover transmission assembly of claim 1, wherein: the pivoting end is a shaft pin piece; one end of the gas spring is assembled to the turn frame through a shaft pin member, and the other end thereof is assembled to the main body frame through a shaft pin member.

8. The elevating tabletop turnover transmission assembly of claim 1, wherein: the overturning angle of the overturning frame is 0 to 90 degrees.

9. The elevating tabletop turnover transmission assembly of claim 6, wherein: the bearing assembly comprises a bearing seat, a bearing and a clamp spring.