阅读说明：本技术 一种无源半自动升降桌 (A kind of passive semi-automatic lifting table ) 是由 林兵兵 王安伦 钱佳敏 于 2019-03-29 设计创作，主要内容包括：本发明涉及家具技术领域,尤其是一种无源半自动升降桌。该无源半自动升降桌,包括：桌板、剪叉组件、桌腿、下框架、可控气弹簧,该桌腿与该下框架连接固定,该剪叉组件位于该桌板与所述下框架之间,该可控气弹簧包括气杆主体、用于切换该气杆主体允许伸缩状态和限制伸缩状态的控制机构,该剪叉组件用于引导所述桌板的移动方向,该气杆主体上端与所述桌面连接,下端与所述桌腿或下框架连接,所述气杆主体用于在所述气杆主体处于允许伸缩状态时驱动所述桌板上升。本发明中的无源半自动升降桌无需电源即可实现桌板自动上升；而剪叉组件具有同步性能优越的特点,因此能够使桌板在上升、下降时平稳性能好。(The present invention relates to technical field of furniture, especially a kind of passive semi-automatic lifting table.The passive semi-automatic lifting table, it include: desktop, scissor component, table leg, lower frame, controllable gas spring, the table leg is connected and fixed with the lower frame, the scissor component is located between the desktop and the lower frame, the controllable gas spring includes gas bar main body, allow the control mechanism of retracted position and limitation retracted position for switching the gas bar main body, the scissor component is used to guide the moving direction of the desktop, the gas bar main body upper end is connect with the desktop, lower end is connect with the table leg or lower frame, the gas bar main body is used to drive the desktop to rise when the gas bar main body, which is in, allows retracted position.Passive semi-automatic lifting table in the present invention can be realized desktop without power supply and rise automatically；And scissor component has the characteristics that net synchronization capability is superior, therefore desktop stationary performance in up and down can be made good.)

1. a kind of passive semi-automatic lifting table, comprising: desktop, scissor component, table leg, lower frame, controllable gas spring, the table leg with The lower frame is connected and fixed, which is located between the desktop and the lower frame, which includes gas bar master Body allows the control mechanism of retracted position and limitation retracted position for switching the gas bar main body, and the scissor component is for guiding The moving direction of the desktop, which is characterized in that the gas bar main body upper end is connect with the desktop, lower end and the table leg or under Frame connection, the gas bar main body are used to drive the desktop to rise when the gas bar main body, which is in, allows retracted position.

2. passive semi-automatic lifting table according to claim 1, which is characterized in that the gas bar main body includes cylinder and appearance It is contained in the intracorporal piston rod of this tin, which includes the attachment base for being fixed on the piston rod end, is contained in the piston Needle in bar, the transmission rope connecting with the pressing plate, is used the pressing plate with attachment base rotation connection for driving the needle to shrink In the rope pulling device for driving the pressing plate by the transmission rope.

3. passive semi-automatic lifting table according to claim 1, which is characterized in that the scissor component includes at least a pair of Axial restraint, one end point of bar A and bar B are rotatablely connected in the middle part of parallel bar A and a pair of parallel bar B, bar A and bar B It is not rotatablely connected axial restraint with the desktop and the lower frame, bar A, bar B are equipped with sliding part A, sliding part B, the lower frame The guide rail slid laterally or sliding slot that cooperation is respectively corresponded with sliding part A, sliding part B are respectively fixed with the desktop.

4. passive semi-automatic lifting table according to claim 3, which is characterized in that the lower surface of the desktop is connected and fixed There is upper frame, the upper frame and the lower frame are opened up and mentioned in the sliding part A, the corresponding side wall of the sliding part B respectively Supply the notch or key-shaped slot of the sliding part A, the sliding part B sliding.

5. passive semi-automatic lifting table according to claim 2, which is characterized in that the transmission of the multiple controllable gas spring Rope is connect with the same rope pulling device.

6. passive semi-automatic lifting table according to claim 1, which is characterized in that the scissor component is along described passive half Automatic lifting table length direction is symmetrical arranged, which includes a pair of parallel bar A and a pair of parallel bar B, bar A with The same side of rotation connection axial restraint in the middle part of bar B, bar A and bar B are rotatablely connected with the middle part of desktop and lower frame respectively Axial restraint.

7. passive semi-automatic lifting table according to claim 1, which is characterized in that the scissor component includes at least a pair of Axial restraint, the both ends difference of bar A, bar B are rotatablely connected in the middle part of parallel bar A and a pair of parallel bar B, bar A and bar B Equipped with sliding part A, sliding part B, the lower frame and the desktop are respectively fixed with and respectively correspond and match with sliding part A, sliding part B The guide rail slid laterally or sliding slot closed, the lower frame are rotated on the side wall of the bar A or bar B of the lower frame inner sidewall It is connected with for guaranteeing that the middle part rotating joint of the bar A and the bar B are always the scissor component during the motion The locating rod just moved up and down.

8. passive semi-automatic lifting table according to claim 3, which is characterized in that the bar A and another bar A, described It is separately connected between bar B and another bar B and is fixed with cross bar, between the cross bar of the bar A and the cross bar of the bar B or under described Tension spring 300 for assisting the passive semi-automatic lifting table to rise or fall is set between frame and the cross bar.

9. passive semi-automatic lifting table according to claim 1, which is characterized in that the desktop or the scissor component connect It connects the foot for driving the desktop to decline by user's list foot being fixed with vertically downward and steps on pulling department.

10. passive semi-automatic lifting table described in -9 any one according to claim 1, which is characterized in that the lower frame exists The locating part for preventing the controllable gas spring from swinging when flexible is fixedly connected with the controllable gas spring corresponding position.

Technical field

The present invention relates to technical field of furniture, especially a kind of passive semi-automatic lifting table.

Background technique

In recent years, with the fast development of computer technology and universal, more and more people are handled official business by computer Or study.While computer is brought convenience to people's work and life, but also many people have suffered from occupational disease.In certain necks Domain or certain work positions, people have to for a long time in face of computer.The long-time accumulated over a long period works before being sitting in computer, no But the office occupational disease such as it may cause visual impairment, and cervical spondylosis, lumbar vertebra disease can be brought.

In order to reduce the generation of occupational disease, one side people should be careful not to overworked, accomplish to strike a proper balance between work and rest；Separately On the one hand it is noted that keeping correctly office posture.It is newest studies have shown that if people can be replaced using sitting posture and stance If office, it can preferably prevent modern job disease.It, can be with for this purpose, occur that work table can be done with electric up-down on the market Meet people stand office and be seated office the needs of.But such work table general structure done is complicated, price is relatively high.

It has also appeared a kind of small-sized same table on the market at present and draws high the fastened by screw knot of formula mainly with hand foldable Structure, most products positioning are equipped with wheel placement and use on the ground, and this kind of product has lower price advantage and convenience, but There is also some problems for this kind of product.Computer and keyboard and mouse are put up use again after need to first adjusting height by this kind of desk, If only using once twice it is also possible that but to sit/stand inconvenience of alternately handling official business so for a long time.

Referring to Figure 1, the Chinese utility model patent of Publication No. CN204580324U discloses a kind of small-sized gas spring Same table, the elevating mechanism including desktop and supporting desktop, the elevating mechanism include controllable gas spring device, X-shaped bracket knot Structure and pedestal；The X-shaped supporting structure has two sets, is separately positioned on the desktop two sides of the bottom, and desktop passes through two sets of X-shaped brackets Structure is connect with pedestal liftable；The controllable gas spring device is set on the base, and at least a set of X-shaped bracket knot Structure is connected by power, and desktop can be driven to rise to setting height by the X-shaped supporting structure.Using the utility model technical solution A kind of small-sized gas spring same table, not only simple and reasonable, manufacturing cost is low, and due to use controllable gas spring fill It sets to drive X-shaped supporting structure, and finally driving desktop rises to setting height, thus it is very easy to use, it is very suitable for The personnel that computer operation is used for a long time realize to sit/stand and alternately handle official business, to be conducive to the health of user.

But the controllable gas spring device of the small-sized gas spring same table is parallel with desktop to be mounted on the base, in same table When for folded state, the angle of X-shaped bracket and desktop is about 3 °, power needed for the X-shaped bracket of controllable gas spring device driving at this time For maximum, the amount of deflection that X-shaped bracket is born also is maximum, is easy to produce deformation or driving force not enough to influence service performance； The partial journey of raising and lowering needs user's auxiliary to lift or push desktop.

Fig. 2 is referred to, the Chinese invention patent of Publication No. CN108497694A discloses a kind of pneumatic toothrow liter of both legs Table drops, including the desktop support part being symmetrical set and the horizontal support member being connected between two desktop support parts, desktop The lower end of supporting element is fixedly connected with upper pillar stand, and the lower end of upper pillar stand is movably set in a lower pillar stand；It is vertical along it in upper pillar stand To a toothrow is fixed with, it being fixed with synchronous gear on the medial surface of lower pillar stand, synchronous gear is engaged on ipsilateral toothrow, A synchronizing shaft is fixed between the axle center of two synchronous gears；A controllable type gas spring is respectively equipped in the upper and lower column of every side, Horizontal support member is switched equipped with pulling wire handle, and desktop support part is equipped with stay rod；It is connected on pulling wire handle switch left and right Bracing wire.The pneumatic toothrow same table of the both legs is not only concise in structure, and it is convenient to operate, and the left and right sides can be fully synchronized, and When desktop is by extraneous pressure in the case where fixed, desktop will not sink.

In order to make fully synchronized to be provided at left and right sides of same table toothrow, synchronous gear and synchronizing shaft, the processing of part, Assembly precision is high, and structure is relative complex, and subsequent maintenance is also inconvenient.

Refer to Fig. 3, the Chinese utility model patent of Publication No. CN201326600Y discloses a kind of button control can Gas spring is locked, has partition that cylinder barrel is separated into air cavity and oil pocket in cylinder barrel.Air cavity end seals, filling with inert gas in air cavity.Oil Oil pocket is divided into oil-filling in two parts by piston and spool by chamber.Piston is connect with piston rod.Piston rod is hollow, inside there is mandril, Communicate oil pocket two parts for pushing spool, the piston rod other end is connect with connector.There is connector lever on connector, in drag-line Mandril can be pressed under pulling, and open spool.Drag-line one end jointing lever, the other end connect button lever, protective sleeve of pulling cable It is separately connected connector and button shell.Button lever can pull drag-line under the pushing of button.The utility model has operation flat Surely, the characteristics of sealed reliable, long service life, interior oil-filled, gas have flame retardant effect, while flexible for installation, easy to use.

The button-controlled lockable gas spring is easy to appear button tension in actual use can not push button lever To pull drag-line, so that spool is not opened influences the lifting of same table.

Summary of the invention

It is an object of that present invention to provide the passive semi-automatic lifting tables that a kind of net synchronization capability is good and can rise automatically.

In order to achieve the above-mentioned advantages, passive semi-automatic lifting table provided by the invention includes: desktop, scissor component, table leg, lower frame Frame, controllable gas spring, the table leg are connected and fixed with the lower frame, which is located between the desktop and the lower frame, The controllable gas spring includes gas bar main body, for switching gas bar main body permission retracted position and limiting the control machine of retracted position Structure, the scissor component are used to guide the moving direction of the desktop, which connect with the desktop, lower end and institute Table leg or lower frame connection are stated, the gas bar main body is used to drive the table when the gas bar main body, which is in, allows retracted position Plate rises.

In one embodiment of the invention, the gas bar main body includes cylinder and is contained in the intracorporal piston rod of this tin, The control mechanism includes the attachment base for being fixed on the piston rod end, the needle being contained in the piston rod and the attachment base It is rotatablely connected the pressing plate for driving needle contraction, the transmission rope connecting with the pressing plate, for driving institute by the transmission rope State the rope pulling device of pressing plate.

In one embodiment of the invention, the scissor component includes at least a pair of parallel bar A parallel with a pair Be rotatablely connected axial restraint in the middle part of bar B, bar A and bar B, one end of bar A and bar B respectively with the desktop and the lower frame Be rotatablely connected axial restraint, bar A, bar B are equipped with sliding part A, sliding part B, the lower frame and the desktop be respectively fixed with and Sliding part A, sliding part B respectively correspond the guide rail slid laterally or sliding slot of cooperation.

In one embodiment of the invention, the lower surface of the desktop is fixedly connected with frame, the upper frame and The lower frame opens up in the sliding part A, the corresponding side wall of the sliding part B respectively and is supplied to the sliding part A, the cunning The notch or key-shaped slot of dynamic portion B sliding.

In one embodiment of the invention, the transmission rope of the multiple controllable gas spring is connect with the same rope pulling device.

In one embodiment of the invention, the scissor component is symmetrical along the passive semi-automatic lifting table length direction Setting, the scissor component include a pair of parallel bar A and a pair of parallel bar B, and bar A and bar B middle part rotation connection are axial solid Fixed, the same side of bar A and bar B are rotatablely connected axial restraint with the middle part of desktop and lower frame respectively.

In one embodiment of the invention, the scissor component includes at least a pair of parallel bar A parallel with a pair Be rotatablely connected axial restraint in the middle part of bar B, bar A and bar B, bar A, bar B both ends be respectively equipped with sliding part A, sliding part B, The lower frame and the desktop be respectively fixed with sliding part A, sliding part B respectively correspond cooperation the guide rail slid laterally or It is rotatably connected on sliding slot, the lower frame and the side wall of the bar A or bar B of the close lower frame inner sidewall for guaranteeing described cut Pitching component, the middle part rotating joint of the bar A and the bar B are always the locating rod just moved up and down during the motion.

In one embodiment of the invention, between the bar A and another bar A, the bar B and another bar B respectively It is fixedly connected with cross bar, is arranged between the cross bar of the bar A and the cross bar of the bar B or between the lower frame and the cross bar Tension spring for assisting the passive semi-automatic lifting table to rise or fall.

In one embodiment of the invention, the desktop or the scissor component are fixedly connected with passing through vertically downward User's list foot drives the foot of the desktop decline to step on pulling department.

In one embodiment of the invention, the lower frame is fixedly connected with the controllable gas spring corresponding position Locating part for preventing the controllable gas spring from swinging when flexible.

In the present invention, which is provided with controllable gas spring, in the gas bar main body of controllable gas spring End is connect with desktop, and lower end is connect with table leg or lower frame, drives desktop automatically when gas bar main body, which is in, allows retracted position Rise, when decline pushes desktop, realizes semi-automatic lifting without power supply；Scissor component is provided between desktop and lower frame, Scissor component has the characteristics that net synchronization capability is superior, therefore desktop stationary performance in up and down can be made good.

In one embodiment of the invention, it is set between the cross bar of bar A and the cross bar of bar B or between lower frame and cross bar The tension spring risen or fallen for assisted passive semi-automatic lifting table is set, tension spring is used cooperatively with controllable gas spring It can be realized preferably lifting effect, maximum possible and meet the use demand of client.

In one embodiment of the invention, desktop or scissor component are fixedly connected with usable person's list foot vertically downward The foot of driving desktop decline steps on pulling department, steps on pulling department by foot in same table decline and is applied with hand to desktop instead of using person The power being pressed downward, enhanced convenience and laborsaving.

Detailed description of the invention

Fig. 1 show a kind of structural schematic diagram of existing small-sized gas spring same table.

Fig. 2 show a kind of structural schematic diagram of the pneumatic toothrow same table of existing both legs.

Fig. 3 show a kind of structural schematic diagram of existing button-controlled lockable gas spring.

Fig. 4 show the structural schematic diagram of the passive semi-automatic lifting table of first embodiment of the invention.

Fig. 5 show the table leg of the passive semi-automatic lifting table of Fig. 4 and the attachment structure schematic diagram of lower frame.

Fig. 6 show the partial enlarged view at the A of Fig. 5.

Fig. 7 show the scissor component of the passive semi-automatic lifting table of Fig. 4 and the structural schematic diagram of guide rail cooperation.

Fig. 8 show the structural schematic diagram of the scissor component with cross bar of the passive semi-automatic lifting table of Fig. 4.

Fig. 9 show the structural schematic diagram of the controllable gas spring of the passive semi-automatic lifting table of Fig. 4.

Figure 10 show the partial enlarged view at the B of Fig. 9.

Figure 11 show the scissor component of the passive semi-automatic lifting table of second embodiment of the invention and the knot of sliding slot cooperation Structure schematic diagram.

Figure 12 show the structural schematic diagram of the passive semi-automatic lifting table of third embodiment of the invention.

Figure 13 show the structural schematic diagram of the passive semi-automatic lifting table of another structure of third embodiment of the invention.

Figure 14 show the structural schematic diagram of the passive semi-automatic lifting table of fourth embodiment of the invention.

Figure 15 show the structural schematic diagram of the passive semi-automatic lifting table of another structure of fourth embodiment of the invention.

Figure 16 show the structural schematic diagram of the rotating roller of the passive semi-automatic lifting table of Figure 14.

Figure 17 show the structural schematic diagram of the rotating roller of the passive semi-automatic lifting table of Figure 15.

Figure 18 show the structural schematic diagram of the passive semi-automatic lifting table of fifth embodiment of the invention.

Figure 19 show the structural schematic diagram of the passive semi-automatic lifting table of sixth embodiment of the invention.

Figure 20 show the structural schematic diagram of the passive semi-automatic lifting table of seventh embodiment of the invention.

Figure 21 show the structural schematic diagram of the passive semi-automatic lifting table of eighth embodiment of the invention.

Figure 22 show the structural schematic diagram of the passive semi-automatic lifting table of ninth embodiment of the invention.

Figure 23 show showing for the installation site of the tension spring of the passive semi-automatic lifting table of tenth embodiment of the invention It is intended to.

Figure 24 show another installation position of the tension spring of the passive semi-automatic lifting table of tenth embodiment of the invention The schematic diagram set.

The foot that the passive semi-automatic lifting table that Figure 25 show eleventh embodiment of the invention is fixed on desktop steps on pulling department Structural schematic diagram.

The foot that the passive semi-automatic lifting table that Figure 26 show eleventh embodiment of the invention is fixed on scissor component steps on drawing The structural schematic diagram in dynamic portion.

Specific embodiment

It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with Attached drawing and preferred embodiment, to specific embodiment, structure, feature and its effect is proposed according to the present invention, detailed description is as follows.

Refer to Fig. 4-10, the passive semi-automatic lifting table of first embodiment of the invention, comprising: desktop 1, scissor component 2, Table leg 4, lower frame 5, controllable gas spring 6.

Fig. 5-6 is referred to, table leg 4 is connected and fixed with lower frame 5.Specifically, lower frame 5 includes a pair of parallel stock 51, a pair of parallel quarter butt 52, multiple angle bar 53 for connecting stock 51 and quarter butt 52.Between stock 51 and quarter butt 52 Angle is 90 °.End of the two sides of angle bar 53 respectively with stock 51, quarter butt 52 is welded and fixed.Table leg 4 is rectangular tubular structure, The inside of table leg 4 is equipped with for fixed connector 41 to be bolted with angle bar 53, and connector 41 is rectangular plate-like knot Structure.The side wall of table leg 4 is equipped with the through-hole for allowing bolt to pass through.Table leg 4 is removably connected and fixed with lower frame 5 by bolt, It is easy to disassemble when needing to transport, reduce packaging occupied space.

At the upper end opening of table leg 4 be equipped with elastic cushion 43, elastic cushion 43 for keep desktop 1 to drop to lowest part when and table 4 upper-end contact of leg will not generate noise and scratch.It is equipped with height adjustable feet 45 at the lower ending opening of table leg 4, conveniently exists The ground adjustment feet 45 for being uneven or being at a slight tilt slightly steadily places desk.

Fig. 7-8 is referred to, scissor component 2 is between desktop 1 and lower frame 5.Scissor component 2 is for guiding desktop 1 Moving direction.Scissor component 2 includes a pair of parallel bar A1 and a pair of parallel bar B1, is rotatablely connected axis in the middle part of bar A1 and bar B1 To fixation, one end of bar A1 and bar B1 are rotatablely connected axial restraint, the other end of bar A1, bar B1 with desktop 1 and lower frame 5 respectively Equipped with sliding part A2, sliding part B2, lower frame 5 and desktop 1 are respectively fixed with for respectively corresponding with sliding part A2, sliding part B2 The guide rail 7 for sliding laterally sliding part A2, sliding part B2 of cooperation.

Further, it is separately connected between bar A1 and another bar A1, bar B1 and another bar B1 and is fixed with cross bar A3, cross Bar B3, cross bar A3 and cross bar B 3 are used to improve the stability of scissor component 2.Sliding part A2, sliding part B2 be respectively with bar A1, bar The movable pulley that the other end end of B1 is connected and fixed.The section of guide rail 7 be U-shaped structure, guide rail 7 respectively with lower frame 5 and desktop 1 It is bolted fixed or is welded and fixed.

Fig. 9-10 is referred to, controllable gas spring 6 includes gas bar main body 61, for switching the permission retracted position of gas bar main body 61 With the control mechanism 62 of limitation retracted position.61 upper end of gas bar main body is connect with desktop, and lower end is connect with table leg 4 or lower frame 5. Gas bar main body 61 is used for the driving desktop 1 when gas bar main body 61, which is in, allows retracted position and rises.

Gas bar main body 61 includes cylinder 611 and the piston rod 612 being contained in cylinder 611.Control mechanism 62 includes fixing 612 end of piston rod attachment base 621, be contained in piston rod 612 needle 623, with attachment base 621 rotation connection be used for The pressing plate 624 of the contraction of valve needle 623, the transmission rope 625 connecting with pressing plate 624 drive pressing plate for passing through transmission rope 625 624 rope pulling device 627.Rope pulling device 627 is fixed on the lower surface of desktop 1.

The quantity of controllable gas spring 6 is 2, and 2 controllable gas springs 6 are symmetrical arranged the table leg 4 for being fixed on width direction Intermediate outside.

The course of work of the passive semi-automatic lifting table is as follows: when needing same table, pulling 1 lower section two sides of desktop Rope pulling device 627 drives pressing plate 624 to press needle 623, and being in symmetrically arranged controllable gas spring 6 allows flexible state, Desktop 1 at the uniform velocity rises under the active force of controllable gas spring 6 at this time, when desktop 1 reaches required height, unclamps rope pulling device 627 make needle 623 reset that controllable gas spring 6 is made to be in the flexible state of limitation, realize the effect risen automatically simultaneously And the height risen is freely controlled by user.

When decline, motion principle and rising are almost the same, are only in controllable gas spring 6 in pulling rope pulling device 627 and permit Need user to apply the power being pressed downward, the object on the gravity and desktop 1 of desktop 1 itself of desktop 1 after flexible state perhaps Decline is realized under the triple role power for the power that gravity and application are pressed downward, when release rope pulling device 627 then keeps unclamping rope pulling device 627 The height of desktop 1.Scissor component 2 then keeps stationarity of the desktop 1 in rising or decline.

Referring to Figure 11, in the passive semi-automatic lifting table of second embodiment of the invention, scissor component 2 includes a pair of flat Axial restraint, one end difference of bar A1 and bar B1 are rotatablely connected in the middle part of capable bar A1 and a pair of parallel bar B1, bar A1 and bar B1 Be rotatablely connected axial restraint with desktop 1 and lower frame 5, bar A1, bar B1 the other end be equipped with sliding part A2, sliding part B2, lower frame Frame 5 and desktop 1 are respectively fixed with the sliding slot 8 slid laterally that cooperation is respectively corresponded with sliding part A2, sliding part B2.

Further, sliding part A2, sliding part B2 are the column structure being connected and fixed respectively with the end of bar A1, bar B1. Sliding slot 8 is the tubular structure for offering width Yu the isometrical key-shaped slot 81 of column structure.

2-13 referring to Figure 1, in the passive semi-automatic lifting table of third embodiment of the invention, the lower surface of desktop 1 connects It connects and is fixed with frame 11.Upper frame 11 and lower frame 5 directly open up confession in the corresponding position sliding part A2, sliding part B2 respectively The notch 110 and notch 50 of sliding slipping or the key-shaped slot 81 of the sliding part sliding for column structure.

4-17 referring to Figure 1, in the passive semi-automatic lifting table of fourth embodiment of the invention, scissor component 2 includes one To parallel bar A1 and a pair of parallel bar B1, axial restraint, the middle part of bar A1 and bar B1 are rotatablely connected in the middle part of bar A1 and bar B1 Pass through rotating roller 9 respectively with the both ends of bar A1 and another bar A1, bar B1 and another bar B1 to be connected and fixed.Rotating roller 9 includes Shaft 91 and the pipe roll body 92 being set in outside shaft.There is bearing 93 between shaft 91 and pipe roll body 92.Further, bearing 93 are fixed on the both ends of pipe roll body 92.Pipe roll body 92 is welded and fixed with bar A1 or bar B1, and the both ends of shaft 91 are each passed through bar A1 Or bar B1 is placed in key-shaped slot 81 or is threadedly coupled fixed movable pulley.

Referring to Figure 18, in the passive semi-automatic lifting table of fifth embodiment of the invention comprising a pair is along same table The symmetrically arranged scissor component 2 of length direction.The same side of bar A1 and bar B1 is rotated with the middle part of desktop 1 and lower frame 5 respectively Connect axial restraint.

Referring to Figure 19, in the passive semi-automatic lifting table of sixth embodiment of the invention, 2 controllable gas springs 6 are symmetrical The intermediate inside for the table leg 4 for being fixed on width direction is set.

Figure 20 is referred to, in the passive semi-automatic lifting table of seventh embodiment of the invention, scissor component 2 is located at desktop 1 Between lower frame 5, it is installed on the width direction of same table.Scissor component 2 includes that two couples of parallel bar A1 and two pairs are parallel Be rotatablely connected axial restraint in the middle part of bar B1, bar A1 and bar B1, the upper end of one pair of them bar A1 and the lower end of another pair bar B1 it is hinged, The upper end of a pair of of bar B1 and the lower end of another pair bar A1 are hinged.The upper end of a pair of of bar A1 and the lower end of another pair bar B1 respectively with Desktop 1 and lower frame 5 are rotatablely connected axial restraint, the upper end of a pair of of bar B1 and the lower end of another pair bar A1 have sliding part B2, Sliding part A2.

Figure 21 is referred to, in the passive semi-automatic lifting table of eighth embodiment of the invention, scissor component 2 includes a pair of flat Axial restraint, the both ends difference of bar A1 and bar B1 are rotatablely connected in the middle part of capable bar A1 and a pair of parallel bar B1, bar A1 and bar B1 Equipped with sliding part A2, sliding part B2, lower frame 5 and desktop 1 are respectively fixed with and respectively correspond cooperation with sliding part A2, sliding part B2 The guide rail 7 slid laterally or sliding slot 8.It is rotatably connected to locating rod 100 on the bar of lower frame 5 and close 5 inner sidewall of lower frame, Locating rod 100 is used to guarantee that rotating joint of the scissor component 2 during the motion in the middle part of bar A1 and bar B1 to be always up and down just It moves.

Figure 22 is referred to, in the passive semi-automatic lifting table of ninth embodiment of the invention, lower frame 5 and controllable gas bullet 6 corresponding position of spring is fixedly connected with the locating part 200 for preventing controllable gas spring 6 from swinging when flexible.The locating part 200 is U-shaped structure.

Figure 23-24 is referred to, in the passive semi-automatic lifting table of tenth embodiment of the invention, a pair of parallel bar A1's Between cross bar A3 and the cross bar B 3 of a pair of parallel bar B1 or between lower frame 5 and cross bar A3 or between lower frame 5 and cross bar B 3 The tension spring 300 risen or fallen for assisted passive semi-automatic lifting table is set.It can be according to the lifting process of actual use The connection radical of middle addition or reduction tension spring 300 is to realize preferably lifting effect.

Figure 25-26 is referred to, in the passive semi-automatic lifting table of eleventh embodiment of the invention, desktop 1 or scissor group Part 2 is connected with foot vertically downward and steps on pulling department 400, and same table is stepped on pulling department 400 by foot in decline and used instead of using person Hand applies the power that is pressed downward, enhanced convenience and laborsaving.

In other embodiments of the invention, table leg 4 can be connect solid with lower frame 5 by way of welding or grafting It is fixed.The transmission rope of multiple controllable gas springs can also be connect with the same rope pulling device, make the flexible same of multiple controllable gas springs Step property is more preferable.

In the present invention, which is provided with controllable gas spring, in the gas bar main body of controllable gas spring End is connect with desktop, and lower end is connect with table leg or lower frame, drives desktop automatically when gas bar main body, which is in, allows retracted position Rise, when decline pushes desktop, realizes semi-automatic lifting without power supply；Scissor component is provided between desktop and lower frame, Scissor component has the characteristics that net synchronization capability is superior, therefore desktop stationary performance in up and down can be made good.

In one embodiment of the invention, it is set between the cross bar of bar A and the cross bar of bar B or between lower frame and cross bar The tension spring risen or fallen for assisted passive semi-automatic lifting table is set, tension spring is used cooperatively with controllable gas spring It can be realized preferably lifting effect, maximum possible and meet the use demand of client.

In one embodiment of the invention, desktop or scissor component are fixedly connected with usable person's list foot vertically downward The foot of driving desktop decline steps on pulling department, steps on pulling department by foot in same table decline and is applied with hand to desktop instead of using person The power being pressed downward, enhanced convenience and laborsaving.

More than, it is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, although this Invention has been disclosed in a preferred embodiment above, and however, it is not intended to limit the invention, any person skilled in the art, In It does not depart within the scope of technical solution of the present invention, when the technology contents using the disclosure above make a little change or are modified to equivalent The equivalent embodiment of variation, but without departing from the technical solutions of the present invention, according to the technical essence of the invention to the above reality Any simple modification, equivalent variations and modification made by example are applied, all of which are still within the scope of the technical scheme of the invention.