CN106308039B

CN106308039B - Lifting device and lifting table

Info

Publication number: CN106308039B
Application number: CN201610917692.5A
Authority: CN
Inventors: 陶声荣
Original assignee: Anhui Laite Gas Spring Co ltd
Current assignee: Anhui Laite Gas Spring Co ltd
Priority date: 2016-10-20
Filing date: 2016-10-20
Publication date: 2024-01-30
Anticipated expiration: 2036-10-20
Also published as: CN106308039A

Abstract

The invention discloses a lifting device, comprising: a spring that provides a holding force after lifting and uses fluid as a damping medium; one end of the spring is positioned in the first sleeve and fixed with one end of the first sleeve; the second sleeve is inserted into the first sleeve from the other end of the first sleeve, and a guide component for lifting the second sleeve is arranged on the first sleeve and/or the second sleeve; the connecting component is arranged at the other end of the second sleeve, and the other end of the spring penetrates through the second sleeve to be connected with the connecting component; and the control assembly is connected with the connecting assembly and then connected with a control component for controlling the fluid flow in the spring. The invention has the advantages of lifting at any time and any place, safety, reliability, no energy consumption and low cost compared with an electric lifting table.

Description

Lifting device and lifting table

Technical Field

The invention relates to a lifting device and a lifting table.

Background

The table is used as a daily living article, is commonly used in life, work and school study, and is generally formed by fixedly connecting a table top with table legs, wherein the length of the table legs is also fixed, so that the height of the whole table top is fixed and cannot be adjusted. Along with the different application environments and the application demands of different crowds, the requirements on the high diversity, the automation degree and the comfort degree of the table are also higher and higher.

Aiming at the problems, a table with adjustable height is slowly developed, most of the table with adjustable height is fixed by screws, the screws are required to be unscrewed or loosened manually during adjustment, and the height can be adjusted by re-disassembly, so that the disassembly and assembly are high in difficulty, complex in process and labor-consuming; the height of each time of adjustment is limited greatly, the adjustable distance is large, the automation degree is not high, the height of the table can not be adjusted automatically at will, and the digital automation experience is met.

In order to improve the automation degree of the height adjustment of the table, most lifting tables in the current market are controlled to lift by utilizing a motor, the cost is relatively high, and electric energy is needed when the lifting tables are needed to be used, so that the use cost is increased.

Disclosure of Invention

In view of the above technical problems, the present invention provides a lifting device and a lifting table that use a spring using fluid as a damping medium to provide a holding force after lifting.

The technical scheme of the invention is as follows:

a lifting device, comprising:

a spring that provides a holding force after lifting and uses fluid as a damping medium;

one end of the spring is positioned in the first sleeve and fixed with one end of the first sleeve;

the second sleeve is inserted into the first sleeve from the other end of the first sleeve, and a guide component for lifting the second sleeve is arranged on the first sleeve and/or the second sleeve;

the connecting component is arranged at the other end of the second sleeve, and a valve core control rod at the other end of the spring passes through the second sleeve to be matched with the connecting component;

the connecting component is driven to enable the valve of the spring to form an opening or closing control component, and the control component is connected with the connecting component.

An application of the lifting device is that the lifting device is applied to furniture as a leg.

The invention has the advantages of simple structure and reasonable structure; the height of the desktop can be adjusted at any time and any place, the pneumatic lifting table is very convenient, attractive and elegant, safe and reliable, has no energy consumption, and has low cost compared with an electric lifting table, convenient movement and easy and soft lifting effect.

Drawings

FIG. 1 is a schematic cross-sectional view of a lifting device according to the present invention

FIG. 2 is a schematic view of a first sleeve according to the present invention;

FIG. 3 is a schematic view of a second sleeve according to the present invention;

FIG. 4 is a schematic view of a first rolling friction assembly according to the present invention;

FIG. 5 is a schematic view of a bushing of the present invention;

FIG. 6 is a schematic view of a sliding friction assembly according to the present invention;

FIG. 7 is a schematic view of a connection assembly according to the present invention;

FIG. 8 is a schematic view of a spring connector according to the present invention;

FIG. 9 is a schematic view of a cable connector of the present invention;

FIG. 10 is a schematic diagram of a control assembly according to the present invention;

FIG. 11 is a schematic view of a drive lever according to the present invention;

FIG. 12 is a schematic view of a mount according to the present invention;

FIG. 13 is a schematic view of a second rolling friction assembly according to the present invention;

fig. 14 is a schematic view of an application example of the lifting device of the present invention.

Detailed Description

As shown in fig. 1, the lifting device of the present invention includes: a spring 1, a first sleeve 2, a second sleeve 3, a rolling friction assembly 4, a sliding friction assembly 5, a connecting assembly 6, a control assembly 7, which provide a holding force after lifting and use fluid as damping medium, each part and the relation between them are described in detail below:

as shown in fig. 1 and 2, the spring 1 is preferably a gas spring. One end of the spring 1 is located in the first sleeve 2 and fixed with one end of the first sleeve 2, the first sleeve 2 is composed of a first square tube 2a and a bottom plate 2b, the bottom plate 2b is fixed at one end of the first sleeve 2, a part of the spring 1 is located in the first square tube 2a, and one end of the spring 1 is fixedly connected with the bottom plate 2 b.

As shown in fig. 1 and 3, one end of the second sleeve 3 is inserted into the first sleeve 2 from the other end of the first sleeve 2, the second sleeve 3 is composed of a second square tube 3a and a housing box 3b, the housing box 3b is fixed at the end of the second square tube 3a, a through hole 3c is provided at the bottom of the housing box 3b, and the through hole 3c communicates with the inner hole of the second square tube 3 a.

As shown in the figure, a guiding component for lifting and lowering the second sleeve is arranged on the first sleeve 2 and/or the second sleeve 3; the guide component is a rolling friction component or a sliding friction component. In the present embodiment, the first sleeve 2 is connected to the sliding friction unit 5, and the second sleeve 3 is connected to the rolling friction unit 4. The specific structure of the rolling friction assembly and the sliding friction assembly is as follows:

as shown in fig. 1, 4 and 5, the rolling friction assembly 4 includes a bushing 4a and rolling bodies 4b, and the material of the bushing 4a is preferably plastic, and the shape of the bushing 4a is square adapted to the first sleeve and the second sleeve because the first sleeve 2 and the second sleeve 3 are square tubes. The bush 4a is provided with a window 4c, and preferably, a plurality of windows 4c are provided on each of four side wall surfaces of the bush 4a, and the rolling bodies 4b are provided in the windows 4 c. Preferably, the rolling bodies 4b are columnar, connecting shafts 4d are respectively arranged at two ends of the rolling bodies 4b, an assembly groove 4e positioned on the side wall surface of the window is arranged on the bushing 4a, the connecting shafts 4d at two ends of the rolling bodies 4b are positioned in the assembly groove 4e, a protrusion 4f is arranged at the mouth of the assembly groove 4e, and after the connecting shafts 4d are embedded into the assembly groove 4e, the protrusion 4f can limit the connecting shafts 4d and limit the connecting shafts 4d to slide out laterally. The circumference of the rolling body 4b is provided with an annular groove 4g, the bushing 4a is provided with a stop lever 4h positioned in a window, after the rolling body 4b is installed in the window 4c, the stop lever 4h is embedded into the annular groove 4g on the rolling body 4b, and the annular groove 4g is positioned in the middle of the rolling body, so that the middle part of the rolling body 4b is subjected to supporting acting force, and when the second sleeve 3 is lifted, the rolling body 4b rolls along the inner wall surface of the first sleeve, and through the contact of the rolling body and the first sleeve, the second sleeve is guided, and friction acting force is reduced. The rolling friction component 4 is connected to the end part of the second sleeve 3 inserted into the first sleeve 2, and the specific connection structure of the rolling friction component and the end part is as follows: the side wall surface of the second square tube 3a is provided with a second connecting hole 3d, one end of the bushing 4a is provided with a groove on the side wall of the guide sleeve, the bushing 4a is provided with a spring piece 4i positioned in the groove, one end of the spring piece 4i is fixed with the bushing 4a into a whole, the other end of the spring piece 4i is a free end, and teeth 4j are arranged on the free end. The bushing 4a is inserted into the second square tube 3a, during the insertion process, the teeth 4j on the free end of the elastic piece 4i are pressed to incline the whole elastic piece 4i inwards, when the teeth 4j correspond to the second connecting holes 3d, the second connecting holes leave space for the teeth 4j, at this time, the teeth 4j enter the second connecting holes 3d under elastic restoring force, so that the bushing 4a and the second square tube 3a form buckling connection.

As shown in fig. 1 and 6, the sliding friction assembly 5 includes a guide sleeve 5a, and ribs 5b are provided on the inner wall surface of the guide sleeve 5 a. Since the first sleeve 2 and the second sleeve 3 are square pipes, the guide sleeve 5a has a square shape adapted to the first sleeve 2 and the second sleeve 3. The side wall of the guide sleeve 5a is provided with a groove, the guide sleeve 5a is provided with a connecting part 5c positioned in the groove, one end of the connecting part 5c is fixed with the guide sleeve into a whole, the other end of the connecting part 5c is a free end, and the free end is provided with a protruding part 5d. The pipe wall of the first sleeve 2 is provided with a hole, the guide sleeve 5a is inserted into the first sleeve 2, in the inserting process, the protruding part 5d on the free end of the connecting part 5c is extruded to enable the whole connecting part 5c to incline inwards, when the protruding part 5d corresponds to the hole of the first sleeve 2, the hole is a space reserved for the protruding part 5d, at the moment, the protruding part 5d enters the hole under elastic restoring force, and the guide sleeve 5a and the first sleeve 2 form buckling connection.

As shown in fig. 1, 7 to 9, the connecting component 6 is arranged at the other end of the second sleeve, and the other end of the spring 1 passes through the second sleeve 3 to be matched with the connecting component. The connection assembly 6 includes: the spring connector 6a, the first connecting shaft 6g, the inhaul cable connector 6h and the second connecting shaft (not shown in the figure), wherein one end of the spring connector 6a is provided with a first shaft hole 6b which is radially arranged along the spring connector, the other end of the spring connector 6a is provided with a mounting hole 6c which is axially arranged along the spring connector, the side wall of the spring connector 6a is provided with a mounting groove 6d, the mounting groove 6d is positioned between the first shaft hole 6b and the mounting hole 6c and is radially arranged along the spring connector 6a, the side wall of the spring connector 6a is also provided with a supporting block 6e which is positioned at two sides of a notch of the mounting groove, and the supporting block 6e is provided with a second shaft hole 6f; both ends of the first connecting shaft 6g are fixed with the second sleeve 3, and the first connecting shaft 6g passes through the first shaft hole 6b on the spring connecting piece; the stay cable connecting piece 6h is hinged to the supporting block 6e through a second connecting shaft, and one end of the stay cable connecting piece 6h is located in the mounting groove. The cable connecting piece 6h is approximately arc-shaped, one end of the cable connecting piece 6h is provided with a connecting part, the connecting part comprises two rings 6i with radial notches, a space is reserved between the two rings 6i, the notches of the two rings 6i are staggered, a shaft hole 6j is arranged in the middle of the cable connecting piece 6h, and the shaft hole 6j is used for a second connecting shaft to penetrate through so as to enable the cable connecting piece 6h to be hinged on the supporting block 6 e. The piston rod of the spring is inserted into the mounting hole 6c in a threaded or interference fit manner, the valve core of the spring 1 passes through the piston rod of the movable spring 1, and after passing through the mounting hole 6c, the valve core control rod of the spring 1 enters the mounting groove 6d and then abuts against the other end 6k of the inhaul cable connecting piece 6 h.

As shown in fig. 1, 10 to 12, the control assembly 7 drives the connecting assembly 6 to enable the valve of the spring to be opened or closed, and the control assembly 7 is connected with the connecting assembly 6. The control assembly includes: the driving lever 7a, the support 7f and the inhaul cable 7j, wherein one end of the driving lever 7a is provided with a sleeve 7b for receiving the traction head of the inhaul cable, the end face of the driving lever 7a, provided with the sleeve, is provided with an arc-shaped groove 7c, the other end of the driving lever 7a is provided with a handle 7d, the handle 7d protrudes out of the surface of the driving lever 7a, the handle 7d is provided with three adapting grooves for adapting to fingers, and the three adapting grooves are respectively used for adapting to an index finger, a middle finger and a ring finger. The driving lever 7a is further provided with a connecting column 7e which is a hollow connecting column, and one corner of the driving lever 7a is provided with a notch which is arc-shaped. The support 7f is provided with a guide part 7g, the support 7f is provided with a containing cavity, the guide part 7g is a cylinder which is hollow, the support 7f is also provided with a first connecting column 7h and a second connecting column 7i, the guide part 7g, the first connecting column 7h and the second connecting column 7i are all positioned in the containing cavity of the support 7f, and the connecting lines of the guide part 7g, the first connecting column 7h and the second connecting column 7i form a three-angle shape. The driving lever 7a is hinged to the support 7f, specifically, when the support 7f is assembled with the driving lever 7a, the guide member 7g passes through the arc-shaped groove 7c, and the guide member 7g is clearance-fitted in the arc-shaped groove 7c on the driving lever 7 a. The connecting column 7e corresponds to the first connecting column 7h and is connected with the first connecting column 7h through a screw, so that the driving lever 7a and the support 7f are hinged, and the second connecting column 7i corresponds to an arc notch on the driving lever. One end of a guy cable 7j is connected with a sleeve 7b on the driving lever 7a, and the other end of the guy cable 7j penetrates out of the support 7f to be connected with a guy cable connecting piece 6 h.

During specific operation, an operator holds the driving lever 7a from an adapting groove on the driving lever 7a, applies acting force to the driving lever 7a in a rotating way, the driving lever 7a rotates around a hinge point of the connecting post 7e and the first connecting post 7h, the driving lever 7a guides the driving lever in the rotating process, the driving lever drives the inhaul cable 7j to retract along the circumferential direction 7b of the sleeve, the inhaul cable 7j drives the inhaul cable connecting piece 6h to rotate, the inhaul cable connecting piece 6h pushes the valve core control rod to displace, so that a valve of the spring 1 is opened, fluid flows in the spring 1, and acting force is applied to a piston rod of the spring 1 through the other hand or other objects, so that the piston rod can be lifted, and then the spring connecting piece 6a and the second sleeve 3 are sequentially driven to lift.

The lifting device of the present invention is not limited to the above embodiment, and for example, the rolling elements may be balls, tapered rollers, or the like, in addition to cylindrical rolling elements. The first sleeve 2, the second sleeve, the bushing 4a, and the guide sleeve 5a may also be diamond-shaped or polygonal. The rolling friction assembly may take another form, and when the rolling friction assembly is used on the first sleeve 2, the rolling friction assembly as shown in fig. 13 may be used on the first sleeve 2. The structure of the first sleeve 2 and the rolling friction assembly is preferably: the first sleeve 2 is provided with a window 2c, and at least two side wall surfaces of the first sleeve 2 are provided with windows 2c, in this embodiment, each side wall surface of the first sleeve 2 is provided with a window 2c. The rolling friction assembly 4 comprises rolling bodies 4b, cover plates 4k and ear plates 4m, wherein the ear plates 4m are fixed on the cover plates 4k, at least two ear plates 4m are fixed on one cover plate 4k, connecting shafts are arranged at two ends of the rolling bodies 4b, two ends of each connecting shaft are respectively connected with the two ear plates 4m, the ear plates 4m are inserted into the window 4c, after the window 4c is covered by the cover plates 4k, the cover plates 4k are fixed on the outer wall surface of the first sleeve 2 through screws or other modes.

The lifting device in any one of the embodiments can be applied to furniture as a leg. As shown in fig. 14, the lifting device is applied to an office table as a table leg, and the office table comprises a pull plate 8, a cross beam 9, a table top support 10 and a table top 11, wherein the pull plate 8 is fixed on one side of two first pipe pipes 2, the pull plate 8 is made of metal, and a bayonet arranged on the pull plate 8 is used for controlling the balance of the lifting office table. The two cross beams 9 are fixed on the two sides of the second sleeve 3, so that the second sleeve does not shake; the other side of the tabletop bracket 10 and the second sleeve 3 is fixed to support the tabletop 11; the tabletop 11 and the tabletop bracket 12 are fixed; the control assembly 7 is fixed on the lower surface of the tabletop, the control assembly 7 is preferably connected with the spring 1 through a pull cable 7j by adopting zinc alloy control assembly 7, and the switch of the spring 5 is closed by utilizing the lever principle and controlling through the pull cable 7 j. The tabletop 13 has a rectangular overall shape and can be manufactured in various shapes. The lifting of the table is realized. In this embodiment, since the table legs are two sets, the Y-shaped cable is preferably used as the cable 7j, and the switching mode is one control two or one control N. The lifting device (table leg) can be 3 sets, so as to form an L-shaped lifting office table. The lifting device (table leg) of the lifting device can be 1 set, so that a single lifting office table is formed. The lifting device (table leg) of the lifting device can be 4 sets, so that a large lifting office table is formed. In addition, the pull plate 8 and the cross beam 9 may be telescopic.

Claims

1. Lifting device, its characterized in that includes:

a spring (1) for providing a holding force after lifting and using a fluid as a damping medium;

one end of the spring (1) is positioned in the first sleeve (2) and is fixed with one end of the first sleeve (2);

the second sleeve (3), one end of the second sleeve (3) is inserted into the first sleeve (2) from the other end of the first sleeve (2), and a guide component for lifting the second sleeve is arranged on the first sleeve (2) and/or the second sleeve (3);

the connecting component (6) is arranged at the other end of the second sleeve (3), and a valve core control rod at the other end of the spring (1) passes through the second sleeve (3) to be matched with the connecting component (6);

the connecting component (6) is driven to enable the valve of the spring (1) to form a control component (7) which is opened or closed, and the control component (7) is connected with the connecting component (6);

the connection assembly (6) comprises:

the spring connecting piece (6 a), one end of the spring connecting piece (6 a) is provided with a first shaft hole (6 b) which is radially arranged along the spring connecting piece (6 a), the other end of the spring connecting piece is provided with a mounting hole (6 c) which is axially arranged along the spring connecting piece, the side wall of the spring connecting piece (6 a) is provided with a mounting groove (6 d), the mounting groove (6 d) is positioned between the first shaft hole (6 b) and the mounting hole (6 c) and is radially arranged along the spring connecting piece (6 a), the side wall of the spring connecting piece (6 a) is also provided with a supporting block (6 e) which is positioned at two sides of a notch of the mounting groove (6 d), and the supporting block (6 e) is provided with a second shaft hole (6 f);

the two ends of the first connecting shaft (6 g) are fixed with the second sleeve (3), and the first connecting shaft (6 g) passes through the first shaft hole (6 b) on the spring connecting piece (6 a);

the cable connecting piece (6 h), cable connecting piece (6 h) are articulated on supporting shoe (6 e) through the second connecting axle, and one end of cable connecting piece (6 h) is located in mounting groove (6 d), after the case control rod of spring (1) passes mounting hole (6 c) and enters into in mounting groove (6 d), forms the abutment with another tip (6 k) of cable connecting piece (6 h).

2. Lifting device according to claim 1, characterized in that the guiding assembly is a rolling friction assembly (4) or a sliding friction assembly (5).

3. Lifting device according to claim 2, characterized in that the rolling friction assembly (4) comprises a bushing (4 a), a rolling body (4 b), a window (4 c) being provided on the bushing (4 a), the rolling body (4 b) being arranged in the window (4 c).

4. A lifting device according to claim 3, wherein the rolling bodies (4 b) are columnar, connecting shafts (4 d) are respectively arranged at two ends of the rolling bodies (4 b), the bushings (4 a) are provided with assembly grooves (4 e) positioned on the side wall surfaces of the windows (4 c), and the connecting shafts (4 d) at two ends of the rolling bodies (4 b) are positioned in the assembly grooves (4 e).

5. Lifting device according to claim 4, characterized in that the circumferential surface of the rolling element (4 b) is provided with an annular groove (4 g), the bushing (4 a) is provided with a stop lever (4 h) located in the window, and after the rolling element (4 b) is mounted in the window (4 c), the stop lever (4 h) is embedded in the annular groove (4 g) on the rolling element (4 b).

6. Lifting device according to claim 2, characterized in that the sliding friction assembly (5) comprises a guiding sleeve (5 a), and that the inner wall surface of the guiding sleeve (5 a) is provided with ribs (5 b).

7. Lifting device according to claim 6, characterized in that the side wall of the guiding sleeve (5 a) is provided with a groove, the guiding sleeve (5 a) is provided with a connecting part (5 c) positioned in the groove, one end of the connecting part (5 c) is fixed with the guiding sleeve into a whole, the other end of the connecting part (5 c) is a free end, and the free end is provided with a protruding part (5 d).

8. Lifting device according to claim 1, characterized in that the control assembly (7) comprises:

a driving lever (7 a), wherein one end of the driving lever (7 a) is provided with a sleeve (7 b) for receiving the traction head of the inhaul cable, and the end surface of the driving lever (7 a) provided with the sleeve (7 b) is provided with an arc-shaped groove (7 c);

the support (7 f), is equipped with the guide part (7 g) on the support (7 f), the said drive lever (7 a) is articulated with support (7 f), the said guide part (7 g) is in the arc-shaped groove (7 c) on the drive lever (7 a) clearance fit;

and one end of the inhaul cable (7 j) is connected with a sleeve (7 b) on the driving lever (7 a).

9. Use of a lifting device according to any one of claims 1 to 8 as a leg in furniture.