CN209883365U

CN209883365U - Pneumatic lifting table

Info

Publication number: CN209883365U
Application number: CN201821914978.9U
Authority: CN
Inventors: 裴旭波
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-20
Filing date: 2018-11-20
Publication date: 2020-01-03
Anticipated expiration: 2028-11-20

Abstract

The embodiment of the application discloses pneumatic lift table, including base, stand subassembly and panel assembly, stand subassembly detachably connect in the base with panel assembly, panel assembly is including controlling the spare, stand subassembly is including being fixed in fixed column on the base and relative the mobilizable slip post of fixed column, pneumatic lift table still including set up in stand subassembly and detachably connect in stand subassembly's controllable air spring works as it supports to press to control the spare during controllable air spring, the slip post is relative the fixed column is towards keeping away from or being close to the direction motion of base. The pneumatic lifting table provided by the embodiment of the application is simple in structure and flexible to operate.

Description

Pneumatic lifting table

Technical Field

The application relates to the technical field of office furniture, in particular to a pneumatic lifting table.

Background

Pneumatic lift table is a common office furniture, and not only height-adjustable, and can fold and pack up to facilitate the use saves space again, consequently has received user's favor widely. However, the existing pneumatic lifting table has the advantages that the controllable gas spring, the stand column assembly and the control piece are fixedly connected together, so that the stand column assembly and the control piece need to be detached simultaneously when the controllable gas spring is replaced or maintained, the structure is complex, and the mounting and the dismounting are inconvenient.

SUMMERY OF THE UTILITY MODEL

The technical problem that this application will be solved lies in, provides a simple structure, and the convenient pneumatic lift table of installation dismantlement.

The embodiment of the application provides a pneumatic lift table, including base, stand subassembly and panel assembly, stand subassembly detachably connect in the base with panel assembly, panel assembly is including controlling the spare, stand subassembly is including being fixed in fixed column on the base and relative the mobilizable slip post of fixed column, pneumatic lift table still including set up in stand subassembly and detachably connect in stand subassembly's controllable gas spring, work as it supports to press to control the spare during the controllable gas spring, the slip post is relative the fixed column is towards keeping away from or being close to the direction motion of base.

Compared with the prior art, the pneumatic lifting table provided by the embodiment of the application is through inciting somebody to action stand subassembly detachably connect in the base with panel assembly, panel assembly is including controlling the piece, column assembly is including being fixed in fixed column on the base and relative the mobilizable sliding column of fixed column, pneumatic lifting table still including set up in column assembly and detachably connect in column assembly's controllable air spring, work as it supports the pressure to control the piece during the controllable air spring, the sliding column can be relative the fixed column is towards keeping away from or being close to the direction motion of base, because controllable air spring detachably connects in column assembly, and with control a keep apart the setting, not only simple structure, and the installation dismantlement is convenient.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a pneumatic lifting table provided in an embodiment of the present application.

Fig. 2 is an exploded perspective view of the pneumatic lift table of fig. 1.

FIG. 3 is an exploded perspective view of a first viewing angle of the mast assembly and controllable gas spring of the pneumatic lift table of FIG. 2.

Fig. 4 is an exploded perspective view of the column assembly of the pneumatic lift table of fig. 1 with the sleeves omitted.

Fig. 5 is a schematic structural view of a slider of a column assembly of the pneumatic elevating table of fig. 2.

Fig. 6 is an exploded perspective view of the slider of the column assembly of the pneumatic lift table of fig. 5.

Fig. 7 is a schematic structural view of the controllable gas spring of the pneumatic elevating table of fig. 1 in an initial state.

Fig. 8 is a schematic structural view of the controllable gas spring of the pneumatic elevating table in fig. 1 in an adjusting state.

Figure 9 is an exploded perspective view of a second viewing angle of the mast assembly and controllable gas spring of the pneumatic lift table of figure 2.

Figure 10 is an exploded perspective view of a third viewing angle of the mast assembly and controllable gas spring of the pneumatic lift table of figure 2.

Fig. 11 is an exploded perspective view of the control of the pneumatic lift table of fig. 2.

Fig. 12 is an enlarged view of a portion I in fig. 2.

Fig. 13 is an enlarged view of a portion II in fig. 2.

Fig. 14 is a partial cross-sectional view of the pneumatic lift table of fig. 1 in an initial state.

Figure 15 is a partial cross-sectional view of the pneumatic lift table of figure 1 in an adjusted position.

Fig. 16 is a schematic structural diagram of a controllable gas spring of a pneumatic lifting table provided in the embodiment of the present application.

Figure 17 is an exploded perspective view of the controllable gas spring of the pneumatic lift table of figure 16.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Further, the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, elements, components, and/or groups thereof. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a pneumatic lifting table 100 according to an embodiment of the present disclosure. It is to be understood that the pneumatic lift table 100 is, for example, but not limited to, an office table, a desk, a dining table, a computer table, etc. The pneumatic lift table 100 includes a base 1, a column assembly 2, and a panel assembly 4. The post assembly 2 is detachably connected between the panel assembly 4 and the base 1. The panel assembly 4 includes a control 50. The upright assembly 2 includes a fixed post 21 fixed to the base 1 and a sliding post 23 movable relative to the fixed post 22. The pneumatic lift table 100 further includes a controllable gas spring 3 disposed within the mast assembly 2 and removably connected to the mast assembly 2. When the operating member 50 presses against the controllable gas spring 3, the sliding column 23 can move away from or close to the base 1 relative to the fixed column 21. It will be appreciated that, in the present embodiment, when the sliding column 23 moves away from or close to the base 1 relative to the fixed column 21, the panel assembly 4 is correspondingly moved away from or close to the base 1, so as to change the height of the pneumatic lifting table 100.

In this embodiment, the height of the pneumatic elevating table 100 is changed in response to the movement of the sliding column 23 relative to the fixed column 21 toward or away from the base 1, and the height is changed in the range of 75cm to 120 cm. So, the user can be according to actual conditions adjustment pneumatic lift table 100's height, for example when pneumatic lift table 100's height adjustment is 120cm, pneumatic lift table 100 is applicable to the user and stands official working to can avoid sitting for a long time and cause the strain to the health, and improve work efficiency. Further, because the control element 50 and the controllable gas spring 3 are respectively and independently arranged on the panel assembly 4 and the column assembly 2, the installation and the disassembly are convenient, and the problem that the controllable gas spring 3 is easily triggered by the control element 50 in a misoperation because the control element 50 and the controllable gas spring 3 are fixedly connected together in the process of disassembling or assembling the pneumatic lifting table 100 can be avoided. In addition, the height of the pneumatic lifting table 100 provided by the embodiment of the application can be adjusted and stopped at any position within an adjustable range through the controllable gas spring 3, so that the pneumatic lifting table can be suitable for different application occasions.

As shown in fig. 2, in the present embodiment, the base 1 is substantially "i" shaped. The top of the base 1 is provided with a positioning groove 101. The bottom of the fixing column 21 of the column assembly 2 is provided with a positioning plate 211 accommodated in the positioning groove 101. In one embodiment, the positioning plate 211 is detachably connected to the fixing post 21. In the present embodiment, the positioning plate 211 is fixed on the fixing column 21 by the locking member 5. It will be appreciated that the locking member 5 is, for example, but not limited to, a screw, pin, snap or magnetic attachment structure. The category of the locking member 5 is applicable to the other locking members described in the embodiments of the present application. In some modified embodiments, the positioning plate 211 is integrally formed with the fixing post 21.

The edge of the positioning plate 211 is exposed to the fixing column 21, that is, the projection of the fixing column 21 along the central axis direction falls in the positioning plate 211. The constant head tank 101 sets up in the intermediate position of base 1, so, when stand subassembly 2 was fixed in on the base 1 through locating plate 101, the whole stress balance of pneumatic lift table 100, and then improved the stability of pneumatic lift table 100. The bottom of the positioning groove 101 is provided with an opening 102 penetrating through the base 1. Thus, when the column assembly 2 is fixed on the base 1, the controllable gas spring 3 exposed at the bottom of the column assembly 2 can be correspondingly accommodated in the opening 102, so as to reduce the occupied space of the controllable gas spring 3 on the pneumatic lifting table 100. The bottom of the positioning groove 101 is provided with a plurality of locking holes 1011 near the edge of the opening 102. The positioning plate 211 is provided with a plurality of through holes 212 at positions corresponding to the plurality of locking holes 1011, and the plurality of locking members 5 pass through the corresponding through holes 212 and are locked in the locking holes 1011, so that the fixing column 21 is fixed on the base 1. In the present embodiment, the through holes 212 are located in the area of the positioning plate 211 not covering the fixing posts 21. Further, the bottom of the base 1 is provided with a plurality of fixed support blocks 103 to stably support the pneumatic elevating table 100. The fixed support block 104 may also be a roller or an adjustment foot.

As shown in fig. 3, in the present embodiment the controllable gas spring 3 comprises a first connector 301. The controllable gas spring 3 is detachably connected to the positioning plate 211 by means of a first connecting member 301. The positioning plate 211 is provided with a through hole 214 (see fig. 9) at a region covering the fixing post 21, and the bottom end of the controllable gas spring 3 passes through the through hole 214 and is fixedly connected with the first connecting member 301. In this embodiment, the first connecting member 301 is fixed to a side of the positioning plate 211 away from the fixing post 21 by a plurality of locking members 303.

As shown in fig. 3 to 4, the pillar assembly further includes a slider 22 disposed between the fixed pillar 21 and the sliding pillar 23. The sliding column 23 is sleeved on the fixed column 21 and is slidably connected to the fixed column 21 through the sliding member 22. In the present embodiment, the number of the sliding members 22 is two, and the two sliding members 22 are symmetrically arranged with respect to the central axis of the fixed column 21. It is understood that the number of the sliding members 22 may be 1 or more than 2 in other embodiments, and the number of the sliding members 22 is not limited in the embodiment of the present application.

As shown in fig. 5 to 6, each sliding member 22 includes a first guide rail 221, a second guide rail 222 engaged with the first guide rail 221, and a plurality of locking members 223. The first guide rail 221 is disposed on an outer side wall of the fixing column 21 and fixed to the fixing column 21 by a plurality of locking members 223. The length of the first guide rail 221 is slightly less than or equal to the height of the fixing post 21. The first guide rail 221 is substantially elongated. The length direction of the first guide rail 221 is parallel to the central axis of the fixed column 21. The second guide rail 222 is disposed on an inner sidewall of the sliding column 23 and located at one end of the sliding column 23 close to the base 1. The second guide rail 222 includes a mounting plate 2221 and at least two ball bearings 2222 disposed on a side of the mounting plate 2221 away from the sliding column 23. The first guide rail 221 is sandwiched between the at least two ball bearings 2222 and slidably fits with the at least two ball bearings 2222. The mounting plate 2221 is fixed to the sliding column 23 by a plurality of fasteners 223, and at least two ball bearings 2222 are slidably engaged with the first guide rail 221, so that the sliding column 23 slides relative to the fixed column 21 by at least two ball bearings 2221. At least two ball bearings 2221 are located at positions of the mounting plate 2221 corresponding to both side edges of the first guide rail 221. The distance between the two ball bearings 2222 perpendicular to the sliding direction of the sliding column 23 is equal to the width of the first guide rail 221 so that the ball bearings 2222 can slide relative to the first guide rail 221. The width direction of the mounting plate 2221 refers to a direction perpendicular to the central axis of the slide column 23.

Optionally, the two pairs of sides of the first guide rail 221 are respectively provided with a slide bar 2211 along the length direction. Each of the guiding strips 2211 is exposed to the exposed surface of the first guiding rail 221 and is substantially arc-shaped. Each ball bearing 2222 is provided with a groove 2223 that mates with the guide bar 2211. In the present embodiment, four ball bearings 2222 are provided on the mounting plate 2221. The thickness of each ball bearing 2222 is equal to the thickness of the first guide rail 221 so as to ensure the smoothness of the sliding movement of the second guide rail 222 relative to the first guide rail 221. It is to be understood that the thickness of the ball bearing 2222 refers to the maximum distance between the opposite ends of the ball bearing 2222 in the centerline axis direction, and the maximum distance between the opposite ends of the thickness of the first guide rail 221 in the width direction.

It is understood that in the present embodiment, the sliding guide bar 2211 of the first guide rail 221 may be a cylindrical bar embedded in the sidewall of the first guide rail 221, that is, the sliding guide bar 2211 is detachably connected to the first guide rail 221. Specifically, the side wall of the first guide rail 221 is provided with a slot 2212 for accommodating the slide bar 2211. The slot 2212 is substantially semi-cylindrical, so that the sliding guide bar 2211 is exposed out of the side wall of the first guide rail 221, thereby realizing that the sliding guide bar 2211 of the first guide rail 221 is matched with the groove 2223 of the ball bearing 2222. It will be appreciated that to increase the stiffness of the first rail 221, the bar is preferably a sear-chrome bar. In other embodiments, the sliding guide strip 2211 of the first guide rail 221 may also be a protrusion protruding from a sidewall of the first guide rail 221, that is, the sliding guide strip 2211 is integrally formed with the first guide rail 221.

Each ball bearing 2222 is secured to the mounting plate 2221 by a locking member 2224. Specifically, each ball bearing 2222 is provided with a through hole 22221 along the axial direction, a locking hole 22211 is formed in the mounting plate 2221 at a position corresponding to the through hole 22221, and the locking member 2224 passes through the through hole 22221 of the ball bearing 2222 and is locked in the locking hole 22211 of the mounting plate 2221. In the present embodiment, the locking part 2224 is a screw. Further, a gasket 2225 is interposed between each ball bearing 2222 and the mounting plate 2221 to reduce friction between the ball bearing 2222 and the mounting plate 2221, so as to reduce noise generated when the sliding column 23 slides relative to the fixed column 21.

Optionally, a plurality of adjusting members 2226 are further disposed on one side of the mounting plate 2221 near the sliding column 23. The plurality of adjusting members 2226 are used to adjust the distance between the first guide rail 221 and the second guide rail 222, so that the sliding guide bar 2211 of the first rail 221 is matched with the ball bearing 2222 of the second rail 222, thereby avoiding the problems of poor stability of the pneumatic lifting table 100 and loud noise generated when the sliding column 23 moves relative to the fixed column 21 due to the gap between the first guide rail 221 and the second guide rail 222. Each of the adjustment members 2226 is attached to the mounting plate 2221 by a fixing member 2227. In this embodiment, the adjustment member 2226 is a fine adjustment nut, such as an eccentric wheel structure, and the fixing member 2227 is a screw.

It is understood that in an alternative embodiment, the second rail 222 includes a mounting plate 2221 and U-shaped strips formed from both sides of the mounting plate 2221 to mate with the first rail 221. In another modified embodiment, the first rail 221 is provided with arc-shaped grooves on both sides, and the second rail 222 is provided with protrusions matching with the grooves.

Referring again to fig. 2 and 3, the top end of the sliding column 23 is further provided with a support plate 231. The panel assembly 4 further comprises a panel bracket 40. The sliding column 23 is connected to the panel bracket 40 of the panel assembly 4 through a support plate 231. In one embodiment, the support plate 231 is removably attached to the sliding post 23 and the panel bracket 40. In the present embodiment, the support plate 231 is fixed to the slide post 23 and the panel bracket 40 by the locking member 5. It will be appreciated that the locking member 5 is, for example, but not limited to, a screw, pin, snap or magnetic attachment structure. In some variant embodiments, the support plate 231 is integrally formed with the sliding column 23. The edge of the support plate 231 is exposed to the sliding column 23, that is, the projection of the sliding column 23 along the central axis direction falls within the support plate 231. The side of the support plate 231 facing away from the pillar assembly 2 is recessed to form a receiving groove 232. The receiving groove 232 is located in the area where the supporting plate 231 covers the sliding column 23. In this embodiment, the controllable gas spring 3 further comprises a second connection 302. The controllable gas spring 3 is fixedly connected to the support plate 231 by means of a second connection 302. The second connecting member 302 is received in the receiving slot 232 and detachably fixed to the supporting plate 231. A controllable gas spring 3 is fixed to the second connecting member 302 and is detachably connected to the second connecting member 302. Further, the bottom of the receiving groove 232 is opened with an opening 233 penetrating the supporting plate 231. The diameter of trompil 233 is greater than the biggest external diameter of controllable gas spring 3 to realize that controllable gas spring 3 passes trompil 233, and then need not to dismantle stand subassembly 2 and can take out or install controllable gas spring 3, improved the efficiency of equipment and dismantlement. The top end of the controllable gas spring 3 passes through the opening 233 to be fixedly connected with the second connecting member 302 and is exposed out of the column assembly 2. In this embodiment, the second connector 302 is fixed to a side of the support plate 231 facing away from the sliding column 23 by a plurality of fasteners 303.

Further, the edge of the supporting plate 231 is vertically extended upward by a stopper plate 234. The supporting plate 231 and the limiting plate 234 together enclose a limiting space 235. The second connecting member 302 and the controllable gas spring 3 are exposed at the top end of the column assembly 2 and are accommodated in the limiting space 235, so that the problem that the sliding member 23 slides relative to the fixed column 21 due to the fact that the top end of the controllable gas spring 3 exposed at the column assembly 2 abuts against the panel bracket 40 in the assembling process of the column assembly 2, the panel bracket 40 and the controllable gas spring 3 can be avoided, and the assembling efficiency and the safety of the pneumatic lifting table 100 are improved.

The column assembly 2 further includes a sleeve 25 sleeved outside the fixed column 21 and the sliding column 23. In the present embodiment, the sliding column 23 is disposed between the fixed column 21 and the sleeve 25, that is, the sleeve 25 is disposed coaxially with the fixed column 21 and the sliding column 23. The end of the sleeve 25 facing away from the base 1 is provided with an annular sealing cover 251. The sealing cover 251 is detachably provided on the sleeve 25. The sealing cover 251 is sleeved on the sliding column 23. The inner diameter of the sealing cap 251 is substantially the same as the outer diameter of the sliding column 23. The sealing cover 251 is used for shielding a gap between the fixed column 21 and the sliding column 23, so that the problem that external dust and other impurities enter the upright post assembly 2 to cause difficulty in cleaning and the problem of hand clamping in the process of adjusting the height of the pneumatic lifting table 100 can be avoided, the sliding direction of the sliding column 23 relative to the fixed column 21 can be guided, and the overall attractiveness of the pneumatic lifting table 100 is improved.

Further, a strip-shaped frame 252 is arranged outside the sleeve 25. The strip-shaped frame 252 and the sleeve 25 together enclose to form a thread passing groove 253. The strip 252 is substantially U-shaped. The rope of the pneumatic elevating table 100 can be received through the wire passing groove 253 to improve the overall beauty of the pneumatic elevating table 100.

As shown in fig. 7 and 8, the controllable gas spring 3 further comprises a resettable pneumatic valve 31, an adjustment rod 32 and an adjustment sleeve 33. The pneumatic valve 31 is telescopically disposed in the adjusting rod 32 and exposed to the top end of the adjusting sleeve 33. The adjusting rod 32 is disposed in the adjusting sleeve 33 and is movable relative to the adjusting sleeve 33.

Further, the controllable gas spring 3 comprises a number of positioning nuts 34. The positioning nut 34 is engaged with the adjustment sleeve 33. The top end of the adjusting rod 32 is provided with an external thread, and the internal thread of the positioning nut 34 is matched with the external thread of the adjusting rod 32. The adjustment rod 32 is adjusted by means of a positioning nut 34 to the depth of insertion into an adjustment sleeve 33 to determine the adjustable height range of the controllable gas spring 3. The adjustable height range of the controllable gas spring 3 is 0-450 mm.

As shown in fig. 7 to 10, the bottom end of the adjustment lever 32 is fixed to the first link 301. Specifically, the first connecting member 301 is provided with a through hole 3011 through which the adjusting rod 32 passes. The bottom end of the adjustment rod 32 is provided with external threads that mate with a set nut 34. The adjustment lever 32 may pass through the through hole 214 of the positioning plate 211. The bottom end of the adjusting rod 32 passes through the through hole 214 of the positioning plate 211 and the through hole 3011 of the first connecting piece 301 in sequence to be screwed with the positioning nut 34. In the present embodiment, the outer diameter of the positioning nut 34 is larger than the diameter of the through hole 3011 of the first connector 301, so that the positioning nut 34 is clamped with the first connector 301, and the bottom end of the adjusting rod 32 can be fixed on the positioning plate 211 of the fixing base 21. Further, a cushion pad 35 is arranged at the bottom end of the controllable gas spring 3. The cushion pad 35 is interposed between the adjustment sleeve 33 and the first link 301. It will be appreciated that the cushion 35 is made of a resilient material. The elastic material is, for example, but not limited to, rubber or thermoplastic polymer, so that the cushion pad 35 can provide a cushion force for the adjusting sleeve 33 during the descending process, thereby preventing the adjusting sleeve 33 from colliding with the positioning plate 211 to cause damage to the controllable gas spring 3. The top end of the adjustment lever 32 is fixedly connected to the second connector 302. Specifically, a threaded hole 3021 matched with the external thread of the adjusting lever 32 is formed at a position of the second connecting member 302 corresponding to the adjusting lever 32.

Referring to fig. 2, fig. 7 and fig. 8 together, it can be understood that when the sliding column 23 is sleeved on the fixed column 21, that is, the bottom end of the sliding column 23 contacts with the base 1, the adjusting rod 32 is accommodated in the adjusting sleeve 33. When the sliding column 23 slides relative to the fixed column 21 in a direction away from the base 1, the adjusting rod 32 extends out of the adjusting sleeve 33, and the sliding distance of the sliding column 23 relative to the fixed column 21 is equal to the distance that the adjusting rod 32 extends out of the adjusting sleeve 33.

Referring to fig. 2 and 11-13, the panel assembly 4 further includes a panel 60. The panel bracket 40 is disposed between the panel 60 and the pillar assembly 2. The panel bracket 40 is generally H-shaped. The panel bracket 30 is provided with a mounting seat 41 at a position corresponding to the pillar assembly 2. The mounting base 41 is provided with two pivoting portions 411 which are arranged oppositely and in parallel. The control member 50 includes a rotating shaft 56 and a movable member 57. The movable member 57 is rotatably connected to the two pivoting portions 411 through a rotating shaft 56. Each pivot portion 411 is provided with a shaft hole (not shown) for the shaft 56 to pass through. The straight line passing through the centers of the two axial holes is perpendicular to the moving direction of the movable member 57.

The control member 50 further includes a handle 51, a shaft 52, a handle holder 53, a control member 54, and a rope 55. The handle 51 is rotatably connected to a handle holder 53 by a rotating shaft 52 and is mounted to the rear surface of the panel 60 by the handle holder 53. Cord 55 is connected between handle 53 and hinge 57. The movable piece 57 is linked with the handle 53 through the rope 55 and is used for driving the controllable gas spring 3 to drive the sliding column 23 to move relative to the fixed column 21. The handle 51 is in a locked state or an unlocked state with respect to the handle holder 53 by the control member 54. Specifically, the handle 51 is locked to the handle holder 53 by the control member 54, or the control member 54 is operated to unlock the handle 51 and the handle holder 53. In the locked state, the handle 51 cannot move; in the unlocking state, the handle 51 is movable, so that the movable member 57 and the handle 53 are linked through the rope 55 to drive the controllable gas spring 3 to drive the sliding column 23 to move relative to the fixed column 21.

The handle 51 includes an operation portion 511 and a connection portion 512 connected to the handle holder 53. Two side wings of the connecting part 512 are provided with shaft holes 5121 for the rotating shaft 52 to pass through. The handle holder 53 includes a bottom plate 531, two side plates 532 disposed opposite to each other, and a back plate 534 connected to the bottom plate 531 and the two side plates 532. The bottom plate 531, the side plates 532, and the back plate 534 collectively define a housing space 535 for housing the connecting portion 512 of the handle 51. Each side plate 532 has an axial hole 5321 for the shaft 52 to pass through. The two ends of the rotating shaft 52 are provided with stoppers 521 stopping the shaft hole 5321. The stop block 521 is detachably connected to the rotating shaft 52. The rotating shaft 52 passes through the shaft hole 5321 of one of the side plates 532, the two shaft holes 5121 of the handle 51 and the shaft hole 5321 of the other side plate 532 in sequence, so that the handle 51 is rotatably connected with the handle fixing seat 53. Further, a protruding fixing post 5322 is provided on an outer side wall of one of the side plates 532. The fixing post 5322 is provided with a locking hole 53221 penetrating the side plate 532 in the axial direction. The connecting portion 512 of the handle 51 is provided with a screw hole 5122 corresponding to the locking hole 53221. Specifically, the control member 54 is adapted to be locked in the screw hole 5122 of the handle 51 through the locking hole 53221 of the side plate 532. The control member 54 is, for example, a screw or a pin. Thus, in the assembling, disassembling or normal office use process of the pneumatic lifting table 100, the handle 51 can be locked on the handle fixing seat 53 through the control member 54, so as to avoid the problem that the user mistakenly operates the handle 51 to cause the movable member 57 to trigger the controllable gas spring 3 to lift, which causes inconvenient operation. In addition, during the height adjustment of the pneumatic elevating table 100, the user can operate the control member 54 to move the control member 54 away from the handle 51 and unlock the control member from the handle holder 53, so that the handle 51 is movable relative to the handle holder 53.

A connecting plate 534 extends from a side of each side plate 532 facing away from the bottom plate 531. The handle fixing base 53 is fixedly connected to the panel 60 through a connecting plate 534. Specifically, the connecting plate 534 is fixed to the panel 60 by a plurality of fasteners 501. The connecting plate 534 has a plurality of through holes 5341 for the plurality of fasteners 501 to pass through, the panel 60 has a plurality of fastening holes at positions corresponding to the plurality of through holes 5341, and the plurality of fasteners 501 pass through the plurality of through holes 5341 and are fastened in the plurality of fastening holes, thereby realizing the fixed connection between the handle holder 53 and the panel 60.

The rope 55 comprises a pulling wire 551 and a pulling rod 552 arranged at one end of the pulling wire 551 far away from the handle 51. One end of the pulling wire 551 is fixedly connected to the handle 51, and the other end of the pulling wire 551 is fixedly connected to the pulling rod 552. Cord 55 is connected to movable member 57 by a pull rod 552. Optionally, the pull rod 552 extends in a direction perpendicular to the central axis of the pull wire 551. The cord 55 further includes a sheath 553 covering the pull wire 551 and two position-limiting connectors 554 disposed at the ends of the sheath 553. The limit joint 554 includes a body 5541 and two annular stop rings 5542 spaced outside the body 5541. The mounting base 41 is provided with a baffle 413 near the two pivoting portions 411. The baffle 413 and the back plate 533 are respectively held between the two stop rings 5542. In this manner, the pull wire 551 of the cord 55 is covered by a sheath 553 to protect the pull wire 551 from abrasion. Furthermore, the limiting joint 554 limits the pulling wire 551 at the preset position of the panel bracket 40, so that the pulling wire 551 is not easy to bend in the assembling or disassembling process, and the service life of the pulling wire 551 is further prolonged. The top of the baffle 413 is provided with a through hole 4131, and the top of the baffle 413 is further provided with a limit hole 4132 communicated with the through hole 4131. The body 5541 of the stopper joint 554 can be retained in the through hole 4131 by passing through the stopper hole 4132 of the baffle 413.

The movable member 57 is rotatably connected to the two pivoting portions 411 of the panel bracket 40 through the rotating shaft 56. The movable member 57 comprises an abutment 571 contactable with the pneumatic valve 31 of the controllable gas spring 3 and a mounting portion 572 for engaging the pull rod 552 of the cable 55. An opening 412 is provided in the mounting seat 41 at a position corresponding to the controllable gas spring 3. Optionally, the opening 412 is located between the two pivoting portions 411 and corresponds to the top portion 571, so that the top portion 571 can pass through the opening 412 to abut against the pneumatic valve 31 of the controllable gas spring 3.

A shaft hole 573 for the rotating shaft 56 to pass through is arranged at the junction of the abutting part 571 and the mounting part 572. The two ends of the rotating shaft 56 are further provided with a limiting block 561. The limiting block 561 is used for stopping the shaft hole of the limiting plate 411. An angle is formed between the abutting portion 571 and the mounting portion 572. In this embodiment, the included angle is an obtuse angle. The end of the mounting portion 572 defines an opening 5711 that mates with the pull rod 552. The end of the mounting portion 572 is provided with a stopper groove 5712 that penetrates the opening 5711 in the axial direction and the radial direction of the opening 5711. Wire 551, adjacent to rod 552, passes through retaining groove 5712 and inserts rod 552 into aperture 5711, thereby providing attachment of rod 552 to movable member 57.

Referring to fig. 1 to 13, in assembly, the controllable gas spring 3 is first installed on the pillar assembly 2, and then the base 1, the assembled pillar assembly 2, the controllable gas spring 3, and the panel assembly 4 are fixedly connected together by the locking member 5. Specifically, when the column assembly 2 is assembled, the first guide rail 221 is fixed to the outer side wall of the fixed column 21, the ball bearings 2222 are mounted on the mounting plate 2221, and then one side of the mounting plate 2221 of the second guide rail 222, which is away from the ball bearings 2222, is fixed to the bottom of the inner side wall of the sliding column 23. The assembled sliding column 23 is sleeved on the assembled fixing column 21, so that the ball bearing 2222 of the second guide rail 222 is matched with the sliding guide bar 2211 of the first guide rail 221. The sealing cover 251 is fixed to the top of the sleeve 25, and the bar 252 is mounted to the outer sidewall of the sleeve 25. The assembled sleeve 25 is fitted over the sliding column 23. The support plate 231 is fixed to the slide column 23. When the controllable gas spring 3 is assembled, the bottom end of the adjusting rod 32 of the controllable gas spring 3 is fixed on the positioning plate 211 of the fixing column 21 through the first connecting piece 301, and the top end of the adjusting rod 32 is fixed on the supporting plate 231 of the sliding column 23 through the second connecting piece 302, so that the controllable gas spring 3 can be detachably mounted on the stand column assembly 2. The positioning plate 211 of the column assembly 2 is received in the receiving slot 101 of the base 1 and is locked to the base 1 by a plurality of locking members 5. When the panel assembly 4 is assembled, the movable member 57 is mounted on the two pivoting portions 411 of the panel bracket 40 through the rotating shaft 56, one end of the rope 55 is fixed to the handle 51, and the other end of the rope 55 is fixed to the movable member 57. The handle 51 is fixed to the handle holder 53, and the handle holder 53 is fixed to the back surface of the panel 60 by the locking member 501. The panel bracket 40 is mounted to the panel 60 to effect assembly of the panel assembly 4. The assembled panel assembly 4 is mounted on the support plate 231 of the pillar assembly 2 by a plurality of locking members 5, thereby completing the assembly. It will be appreciated that assembly of the mast assembly 2, the controllable gas spring 3 and the panel assembly 4 can be performed simultaneously.

Referring to fig. 2, 11, 14 and 15, in use, the control member 54 is operated to unlock the handle 51 and the handle holder 53, and at this time, the handle 51 is movable relative to the handle holder 53. When an external force is applied to the handle 51, the handle 51 pulls the cord 55, and the mounting portion 572 of the movable piece 57 is pulled by the pull rod 552 to move in a direction approaching the handle 51. When the abutting portion 571 of the movable member 57 penetrates through the opening 412 to abut against the pneumatic valve 31 of the controllable gas spring 3, the pneumatic valve 31 of the controllable gas spring 3 extends into the adjusting rod 32, that is, the pneumatic valve 31 moves towards one side close to the base 1 relative to the adjusting rod 32, the adjusting rod 32 of the controllable gas spring 3 slides relative to the adjusting sleeve 33, and the controllable gas spring 3 drives the sliding column 23 to move towards the direction far away from the base 1 relative to the fixed column 21, at this time, the sliding column 23 is in a sliding state. It will be appreciated that the user can adjust the distance that the sliding column 23 slides relative to the fixed column 21, i.e. the height at which the pneumatic table 100 is raised, depending on the distance that the adjustment rod 32 of the controllable gas spring 3 slides relative to the adjustment sleeve 33.

When the pneumatic elevating table 100 is raised to the preset working position, the external force applied to the handle 51 is stopped. At this time, the pneumatic valve 31 of the controllable gas spring 3 is reset and abuts against the abutting portion 571, so that the abutting portion 571 is in an initial state, that is, the abutting portion 571 is located right above the opening 412, the controllable gas spring 3 is inactive (that is, the adjusting rod 32 is inactive relative to the adjusting sleeve 33), that is, the controllable gas spring 3 supports the sliding column 23 of the column assembly 2, so that the sliding column 23 is in an inactive state, thereby achieving height adjustment of the pneumatic lifting table 100. The control member 54 is operated to lock the handle 51 to the handle fixing seat 53, and at this time, the handle 51 is not moved relative to the handle fixing seat 53, so as to avoid the problem that the user mistakenly operates the handle 51 to trigger the controllable gas spring 3 to work, thereby ensuring the stability and safety of the pneumatic lifting table 100 in the office use state. It will be appreciated that when the air table 100 needs to be reset or lowered to the current height of the air table 100, an external force is applied to the handle 51 and another force is applied to the panel assembly 4 to reset or lower the air table 100 to the predetermined position. Wherein, the direction of the acting force applied on the panel assembly 4 is opposite to the direction of the lifting movement of the sliding column 23 relative to the fixed column 21, and the acting force applied on the panel assembly 4 is larger than the pneumatic elastic force of the controllable gas spring 3.

Referring to fig. 16 and 17 together, fig. 16 and 17 show another structure of the controllable gas spring 3 a. The structure of the controllable gas spring 3a is similar to that of the controllable gas spring 3 in the above-described embodiment. The controllable gas spring 3a comprises a resettable pneumatic valve 31, an adjustment rod 32, an adjustment sleeve 33, a positioning nut and a cushion 35. The controllable gas spring 3a, however, also comprises a sleeve 36 arranged outside said adjusting sleeve 33, a mechanical spring 37, an adjusting nut 38 arranged outside the sleeve 36 and a washer 39. The sleeve 36 is fitted over the adjustment sleeve 33. The sleeve 36 may be fixed to the adjustment sleeve 33 by welding, gluing, or the like. The adjusting nut 38 is movable relative to the sleeve 36 to adjust the magnitude of the spring force of the mechanical spring 37. Specifically, the outer side wall of the sleeve 36 is provided with an external thread 361 matched with the internal thread of the adjusting nut 38. External threads 361 are provided at an end of sleeve 36 remote from support plate 231. The mechanical spring 37 is sandwiched between an adjusting nut 38 and a washer 39. The washer 39 is fixed to the bottom of the adjustment lever 32 by a set nut. It will be appreciated that in this embodiment, the two ends of the mechanical spring 37 are stopped by the adjusting nut 38 and the washer 39, respectively. The outer diameter of the mechanical spring 37 is smaller than the outer diameter of the adjustment nut 38 and the outer diameter of the washer 39 so that the mechanical spring 37 is sandwiched between the adjustment nut 38 and the washer 39. The washer 39 defines an opening 391 for the adjustment rod 32 to pass through. The cushion 35 stops against the cushion 35 of the washer 39.

Alternatively, in some embodiments, the outer side wall of the adjustment sleeve 33 is provided with an external thread that mates with the internal thread of the adjustment nut 38, i.e. the sleeve 36 may be omitted for cost savings. The adjusting nut 38 is movable relative to the adjusting sleeve 33 to adjust the magnitude of the spring force of the mechanical spring 37.

It will be appreciated that different types of controllable gas springs 3 have different values of the spring force. The value of the spring force of the outgoing controllable gas spring 3 product is usually fixed. This application embodiment is through the elastic force value of adjustment mechanical spring 37 to the whole elastic force value of controllable air spring 3a of increase, thereby can increase the bearing weight of pneumatic lift table 100, and then ensured the stability of pneumatic lift table 100. In this embodiment, the range of the elastic force value of the mechanical spring 37 is approximately 0-10 kg. In particular, in the present embodiment, the sleeve 36 includes a first position P1 and a second position P2, and when the adjusting nut 38 is located at the first position P1, the mechanical spring 37 is in an initial state (i.e. an unstretched state), and the elastic force value of the mechanical spring 37 is the minimum, and the acting force between the adjusting sleeve 33 and the adjusting rod 32 is the elastic force value of the controllable gas spring 3a itself, which is 0 kg. When the adjusting nut 38 moves from the first position P1 to the second position P2, the mechanical spring 37 is in a compressed state, at this time, the elastic force value of the mechanical spring 37 is the largest, and the elastic force value is 10kg, at this time, the acting force of the adjusting sleeve 33 relative to the adjusting rod 32 is equal to the elastic force value of the controllable gas spring 3a itself plus the elastic force value of the mechanical spring 37. In this way, the elastic force value of the mechanical spring 37 can be correspondingly adjusted by adjusting the position of the adjusting nut 38. Specifically, when the adjusting nut 38 moves from the first position P1 toward the second position P2, the elastic force value of the mechanical spring 37 gradually increases; when the adjusting nut 38 moves from the second position P2 toward the first position P1, the elastic force of the mechanical spring 37 gradually decreases. The distance between the first position P1 and the second position P2 is D, which is 200 mm. It is understood that, in the present embodiment, the first position P1 refers to the position where the adjustment nut 38 is screwed on the sleeve 36 closest to the support plate 231, and the second position P2 refers to the position where the adjustment nut 38 is screwed on the sleeve 36 farthest from the support plate 231. It can be understood that, in this embodiment, the user can adjust the length of mechanical spring 37 through operating adjusting nut 38 to realize the adjustment to the elastic force value of mechanical spring 37, thereby increased the whole elastic force value of controllable gas spring 3a, and then ensured the stability of pneumatic lift table 100, not only simple structure, and convenient operation.

In this embodiment, the adjustment nut 38 may be rotated relative to the sleeve 36 by rotating the device 200. In the present embodiment, the rotation device 200 is a wrench. Since the controllable gas spring 3a is detachably connected to the pillar assembly 2, the user can remove the controllable gas spring 3a by detaching the first connector 301 from the positioning plate 211 and detaching the second connector 302 from the support plate 231. The user can adjust the position of the adjusting nut 38 according to the actual situation. For example, when the elastic force value of the controllable gas spring 3a is small, the adjustment nut 38 may be adjusted to the second position P2 or a position close to the second position P2 to increase the overall elastic force value of the controllable gas spring 3a, thereby ensuring the stability of the pneumatic elevating table 100. When the elastic force value of the controllable gas spring 3a is large, the adjusting nut 38 can be adjusted to the first position P1 or a position close to the first position P1, so that the user can adjust the height of the pneumatic lifting table 100 by applying a small force to the panel assembly 4 while ensuring the stability of the pneumatic lifting table 100, and the operation is convenient. Referring to fig. 1-17 together, further, in some embodiments, the controllable gas spring 3a further includes a turning device (not shown) rotatably connected to the adjusting nut 38. In this embodiment, the rotating device is an eccentric wheel. It will be appreciated that in other embodiments, the rotation means may also be a drive motor. One end of the rotating device is fixedly connected to the rope 53 and is linked with the handle 51 through the rope 53. The direction of rotation of the rotary member is opposite to the direction of rotation of the adjustment nut 38.

The embodiment of the application provides a pneumatic lift table, through inciting somebody to action stand subassembly detachably connect in the base with panel assembly, panel assembly is including controlling the spare, column assembly is including being fixed in fixed column on the base is relative the mobilizable sliding column of fixed column, pneumatic lift table still including set up in column assembly and detachably connect in column assembly's controllable air spring, work as it supports the pressure to control the spare during the controllable air spring, controllable air spring drive the sliding column is relative the fixed column is kept away from towards the one end activity of base, because controllable air spring detachably connects in column assembly, and with control a keep apart the setting, not only simple structure, and the installation dismantlement is convenient. In addition, the height of the pneumatic lifting table can be adjusted and stopped at any position within an adjustable range through the controllable gas spring, so that the pneumatic lifting table can meet the application requirements of different occasions.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in view of the above, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. The utility model provides a pneumatic lift table, its characterized in that, includes base, stand subassembly and panel assembly, stand subassembly detachably connect in the base with panel assembly, panel assembly is including controlling the piece, stand subassembly is including being fixed in fixed column on the base with relative the mobilizable slip post of fixed column, pneumatic lift table still including set up in stand subassembly and detachably connect in stand subassembly's controllable gas spring, when controlling the piece and supporting when pressing controllable gas spring, the slip post can be relative the fixed column is towards keeping away from or being close to the direction motion of base.

2. The pneumatic elevating table as defined in claim 1, wherein said sliding column is sleeved on said fixed column, said column assembly further comprises a first guide rail and a second guide rail matching with said first guide rail, said first guide rail is disposed on an outer side wall of said fixed column, said second guide rail is disposed on an inner side wall of said sliding column and is located at an end of said sliding column close to said base.

3. The pneumatic lift table of claim 2 wherein said second track includes a mounting plate and at least two ball bearings disposed on a side of said mounting plate facing away from said sliding column, said first track being sandwiched between said at least two ball bearings and slidably engaged with said at least two ball bearings.

4. The pneumatic lifting table as claimed in claim 3, wherein the first guide rail is provided at both sides thereof with guide slides along the length direction, and the side wall of each ball bearing is provided with a groove for fitting the guide slide.

5. A pneumatic lift table as set forth in claim 3 wherein said mounting plate is provided with an adjustment member on a side thereof adjacent said sliding column, said adjustment member being adapted to adjust the distance between said first rail and said second rail.

6. The pneumatic lifting table as claimed in claim 1, wherein the column assembly further comprises a sleeve and a sealing cover disposed at an end of the sleeve away from the base, the sleeve is disposed coaxially with the sliding column and the fixing column, the sliding column is disposed between the sleeve and the fixing column, and the sealing cover is disposed on the sliding column and is used for shielding a gap between the sleeve and the sliding column.

7. The pneumatic lift table as in claim 1, wherein said fixed posts are fixed to said base by a retaining plate and said sliding posts are fixed to said panel assembly by a support plate, wherein when moving relative to said fixed posts in a direction away from or toward said base, said panel assembly is correspondingly moved in a direction away from or toward said base to change the height of said pneumatic lift table.

8. A pneumatic lifting table as claimed in claim 7 wherein the lower end of the controllable gas spring is removably connected to the positioning plate by a first connector and the upper end of the controllable gas spring is removably connected to the support plate by a second connector.

9. The pneumatic lift table of claim 8 wherein said positioning plate defines a first opening, a bottom end of said controllable gas spring extending through said first opening and fixedly coupled to said first connector, said support plate defines a second opening, and a top end of said controllable gas spring extending through said second opening and fixedly coupled to said second connector.

10. A pneumatic lift table as set forth in claim 9 wherein said controllable gas spring has a maximum outer diameter less than the diameter of said second opening.

11. A pneumatic lift table as set forth in claim 9 wherein said support plate is recessed at a top thereof with a receiving slot for receiving said second connector.

12. A pneumatically liftable table as claimed in claim 1, wherein said panel assembly further comprises a panel and a panel bracket for supporting said panel, one end of said manipulandum being connected to said panel bracket and the other end of said manipulandum being connected to said panel.

13. The pneumatic lift table of claim 12 wherein said control member includes a handle, a cable and a movable member, said cable being connected between said handle and said movable member, and said movable member being in linkage with said handle via said cable for driving said controllable gas spring to move said sliding post relative to said fixed post.

14. The pneumatic lift table of claim 13, wherein said control further comprises a handle mount, said handle being movably mounted to said handle mount, said panel bracket having a mounting seat disposed at a location corresponding to said post assembly, said mounting seat being secured to said panel.

15. The pneumatic lift table of claim 14 wherein said control further comprises a control member by which said handle is locked or unlocked relative to said handle-holder.

16. The pneumatic lifting table as claimed in claim 13, wherein the panel bracket is provided with two opposite pivoting portions at positions corresponding to the column assembly, the movable member is movably connected to the two pivoting portions, a pull rod is provided at one end of the rope away from the handle, the movable member includes a butt portion and an installation portion, the pull rod is clamped to the installation portion, the controllable gas spring includes a pneumatic valve which is resettable and exposed out of the column assembly, the panel bracket is provided with an opening through which the pneumatic valve passes, and the butt portion is directly opposite to the opening.

17. The pneumatic lifting table as claimed in claim 16, wherein when the handle is under a force, the pull rod pulls the mounting portion to move in a direction close to the handle, and the abutting portion passes through the opening and abuts against the pneumatic valve, so that the sliding column is driven by the controllable gas spring to move in a direction away from or close to the base relative to the fixed column; when the handle is in an unstressed state, the pneumatic valve is reset and abuts against the abutting portion, so that the abutting portion is located right above the opening, and the controllable gas spring is inactive.

18. The pneumatic lift table of claim 16, wherein said controllable gas spring further comprises a slidably connected adjustment rod and an adjustment sleeve, said adjustment sleeve is sleeved on said adjustment rod, and said pneumatic valve is telescopically disposed within said adjustment rod and exposed to said post assembly.

19. The pneumatic lifting table as claimed in claim 18, wherein the controllable gas spring further comprises an adjusting nut and a mechanical spring sleeved outside the adjusting sleeve, and a washer, the washer is fixed to the bottom of the adjusting rod, the mechanical spring is clamped between the adjusting nut and the washer, and the adjusting nut is movable relative to the adjusting sleeve to adjust the magnitude of the elastic force of the mechanical spring.

20. The pneumatic lift table of claim 19, wherein said controllable gas spring further comprises a sleeve disposed around said adjusting sleeve, said adjusting nut being threadably engaged with said sleeve, said sleeve having a first position and a second position, and said mechanical spring having a gradually increasing spring force value when said adjusting nut is moved from said first position toward said second position.