CN107890202A - A kind of lifting locking device of table and chair feet - Google Patents
A kind of lifting locking device of table and chair feet Download PDFInfo
- Publication number
- CN107890202A CN107890202A CN201711119337.4A CN201711119337A CN107890202A CN 107890202 A CN107890202 A CN 107890202A CN 201711119337 A CN201711119337 A CN 201711119337A CN 107890202 A CN107890202 A CN 107890202A
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- China
- Prior art keywords
- roll
- fixed cylinder
- tables
- pillar
- steel wire
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B9/00—Tables with tops of variable height
- A47B9/12—Tables with tops of variable height with flexible height-adjusting means, e.g. rope, chain
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B2200/00—General construction of tables or desks
- A47B2200/0035—Tables or desks with features relating to adjustability or folding
- A47B2200/005—Leg adjustment
- A47B2200/0051—Telescopic
- A47B2200/0052—Telescopic with two telescopic parts
- A47B2200/0053—Flat lifting device for desks with two telescopic sections
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Special Chairs (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
The invention discloses a kind of lifting locking device of table and chair feet, belong to tables and chairs equipment technical field, its supporting leg include can pull plug-in type connection outer pillar and interior pillar, retaining mechanism is provided between outer pillar lower end and interior pillar；Preloading spring is provided between interior pillar upper end and tables and chairs panel bottom surface, interior pillar upper end is further fixed on steel wire rope, and the steel wire rope other end passes through outer pillar top, by synchronous crank closer structure, is finally accommodated in collection rope drive mechanism；Collection rope drive mechanism is sheathed on the fixed cylinder two outside roll two, the end of roll two connection shake handle including roll two and clearance-type；Synchronous crank closer structure includes a gear wheel and is uniformly engaged in four little gears of canine tooth wheel surface, and the little gear is fixedly set in roll one end, and the roll external gap type is arranged with fixed cylinder.The present invention carries out tables and chairs panel lift adjustment from top to bottom, laborsaving and conveniently；And the effective guarantee synchronous operation of four supporting legs；And smart structural design, it is easy to operate.
Description
Technical field
The present invention relates to tables and chairs equipment technical field, a kind of lifting locking device of table and chair feet is specifically related to.
Background technology
Same table is largely used in American-European countries, it is common to be used for learning, handle official business, surfing the Net etc..And it is domestic also by
Gradually approve and start extensive use.Its value is to aid in office crowd and takes leave of sitting, realizes stand-type office.Learned by research
Investigation of the person to the development history of world furniture is found：The mankind find to sit down in daily routines after walking upright be advantageous to mitigate it is tired
Labor, so as to invent thing to sit on.The mode of this sedentary passes on therewith, but with people be seated office time it is more next
Longer, people gradually recognize that sitting is unfavorable for the raising of operating efficiency on the contrary, and people begin attempt to do station alternative expression office, gradually
There have been turn into a kind of popular healthy working way to same table gradually using the office of same table standing posture.Either sitting
Office or long-term office of standing produce bad physiological effect to human body, and only alternately sitting and standing office is only most scientific, most strong
The working way of health, alternately sitting and standing office will guide the great change of a health office.Correspondingly, chair lift is also more and more extensive
Using.The people that chair lift is adapted to different heights carries out sitting posture or stance use, rational in infrastructure, easy to use, simple to operate,
It is adapted to the occasions such as school, family, office, operating room to use, is beneficial to human eye and vertebra health, is beneficial to improve study and work
Make efficiency.Up-down desk and chair typically all lifts the supporting leg of rod structure by it and realizes elevating function, in addition to locking device, can be various
Positioned in height.
At present, the supporting leg of common lifting structure includes interior pillar and outer pillar, and outer pillar contact ground, interior pillar connect
Outer pillar upper end is connected to, interior pillar upper end is connected with tables and chairs panel, and locking device is provided between outer pillar and interior pillar.Rising-falling tone
During section, one by one open locking device and upwards extracting in pillar, due to by tables and chairs panel gravity pressurization, its regulation process compared with
To be laborious and inconvenient；So height of each supporting leg of separate regulation one by one, lift adjustment process is slower, and tables and chairs panel regulation process
In flatness be difficult to keep.
The content of the invention
1. technical problems to be solved
The technical problem to be solved in the present invention is the lifting locking device for providing a kind of table and chair feet, and it is carried out from top to bottom
Tables and chairs panel lift adjustment, have laborsaving and the advantages of facilitate；And the effective guarantee synchronous operation of four supporting legs, be advantageous to plus
Flatness during the lift adjustment of fast tables and chairs panel and the regulation of tables and chairs panel is kept；And smart structural design, it is easy to operate.
2. technical scheme
To solve the above problems, the present invention adopts the following technical scheme that：
A kind of lifting locking device of table and chair feet, including tables and chairs panel and four branch being separately fixed on its bottom surface corner
Leg, the supporting leg include can the connection of pull plug-in type outer pillar and interior pillar, the interior lower rod end contact ground it is described outer
Pillar is connected to interior pillar upper end, and tables and chairs panel bottom surface, the outer pillar lower end and interior pillar are fixed in the outer pillar upper end
Between be provided with retaining mechanism；Preloading spring, the interior pillar upper end are provided between the interior pillar upper end and tables and chairs panel bottom surface
The steel wire rope parallel to preloading spring is further fixed on, the steel wire rope other end passes through outer pillar upper portion side wall, by synchronous conjunction
Restrict mechanism, is finally accommodated in collection rope drive mechanism,
The synchronous crank closer structure includes a gear wheel and is uniformly engaged in four little gears of canine tooth wheel surface, described
Little gear is fixedly set in roll one end, and the roll external gap type is arranged with fixed cylinder, and the little gear is positioned at solid
Safety barrel is external, the outer surface of the roll and the inner surface of fixed cylinder be respectively equipped be adapted but out of mesh external screw thread and
Internal thread, the externally threaded convex surfaces are provided with anti-skidding indentation；The steel wire rope enters corresponding solid from corresponding roll one end
Safety barrel body, it is wrapped in along external screw thread convex surfaces on the roll, finally passes corresponding fixed cylinder from the roll other end；
The collection rope drive mechanism includes roll two, fixed cylinder two, take-up reel and shake handle, the roll two
And the assembling structure of fixed cylinder two is consistent with the assembling structure of roll and fixed cylinder, the end of fixed cylinder two connection
On take-up reel, and the end of roll two is fixedly connected with the rotating shaft through take-up reel, and the rotating shaft other end bending is at a right angle
Shape, the shake handle are connected to rotating shaft right angle end by connecting rod, and it is relative with take-up reel that the shake handle is located at connecting rod
Side, and the connected mode between shake handle and connecting rod is is flexibly connected, the take-up reel towards shake handle one
Side is uniformly provided with the locking slot that at least four can engage with shake handle, the distance between the connecting rod center and spindle central
It is equal with the distance between spindle central with locking slot；Four strands of steel wire ropes, which pass, closes that to be twisted one thick after corresponding fixed cylinder
Steel wire rope, it is then from the one end relative with take-up reel of roll two into fixed cylinder two and raised along the external screw thread of roll two
Surface wrap is finally accommodated in take-up reel on roll two.
As the improvement to such scheme, each supporting leg side is respectively equipped with guide roller mechanism, the wire turbine
Structure includes roll wheel, fixed block and the connecting rod for being held on roll wheel both ends and connection fixing block, and the fixed block is fixed on
Tables and chairs panel bottom surface；The steel wire rope around corresponding roll wheel through being first connected to synchronous conjunction after outer pillar upper portion side wall
In the mechanism that restricts.Roll wheel can play limition orientation effect to steel wire rope, may advantageously facilitate the drawing of steel wire rope or loosen process.
Further, the retaining mechanism includes being surrounded on the annular sleeve on the outside of interior pillar, and the annular sleeve border is uniform
Provided with vertical strip shape gob, and strip shape gob upper end closed, strip shape gob lower end extend to annular sleeve lower end and are open, the annular sleeve
On be arranged with nut, and the annular sleeve outer surface is provided with the screw thread being adapted with nut inner surface.Strip shape gob causes annular sleeve
Bore has the function of fine setting；By screwing or loosening nut, it can tighten up or unclamp annular sleeve, to realize outer pillar and interior pillar
Between locking or loosen, it is simple in construction easily-controllable.
Further, the specific mounting structure of the synchronous crank closer structure is：Four fixed cylinders be vertically arranged and
Its top is fixed in the middle part of tables and chairs panel bottom surface, and the little gear is located at immediately below fixed cylinder, the gear wheel and little gear
Lower section is provided with supporting plate, the central shaft through gear wheel center is vertically and fixedly provided with the center of the supporting plate upper surface, in described
Mandrel upper end is directly anchored to tables and chairs panel bottom surface or is connected to by connecting rod two on fixed cylinder；Four strands of steel wire ropes point
Do not enter from corresponding fixed cylinder peripheral side lower end, side upper end is enclosed out of this fixed cylinder and is passed, is then collected together in the synchronization
On the center line of crank closer structure and close sth. made by twisting.Synchronous crank closer structure is fixed in the middle part of tables and chairs panel bottom surface, is advantageous to balanced each steel
Draw between cord and supporting leg, it may advantageously facilitate the synchronization of four supporting leg lifting actions；Then fixed cylinder is vertical
The into and out of four-ply steel wire rope is easy in setting, can prevent gear and roll from dropping using supporting plate and center spindle structure,
Dependency structure relation is ensured, while meets the activity need of gear and roll；The threading mode of above-mentioned steel wire rope, is advantageous to prevent
It is only chaotic, be easy to steel wire rope pass around and transition.
Further, the specific mounting structure of the collection rope drive mechanism is：The fixed cylinder two is laterally set and it
Side is fixed on the lateral edges of tables and chairs panel bottom surface one, and the shake handle is located at tables and chairs panels outside；It is thick after the conjunction sth. made by twisting
Steel wire rope enters fixed cylinder two from fixed cylinder two towards one end of synchronous crank closer structure.It is arranged such, is easy to user to grasp
Make, also allow for steel wire rope passes around process.
3. beneficial effect
(1) present invention by supporting leg be set to can pull plug-in type connection outer pillar and interior corbeling, and outer pillar connect
In interior pillar upper end；Preloading spring is provided between interior pillar upper end and tables and chairs panel bottom surface, interior pillar upper end is further fixed on parallel
In the steel wire rope of preloading spring.In practical application, user is by pulling the steel wire rope other end, you can and decline outer pillar, from
And more easily realize the decline function of tables and chairs panel；Loosen the steel wire rope other end, in the presence of preloading spring, tables and chairs face
Plate is raised above to steel wire rope (being in compressive state all the time based on preloading spring in adjustable range) is tightened, that is, realizes tables and chairs panel
Rising function.It follows that the present invention is by controlling the height of steel wire rope desk with adjustable seat plate from top to bottom, and steel wire rope
Control is manipulated by swing handle, is had laborsaving and the advantages of facilitate.
(2) present invention includes roll two and clearance-type by collecting driving mechanisms control steel wire rope of restricting, collection rope drive mechanism
The fixed cylinder two being sheathed on outside roll two, the outer surface of roll two is respectively equipped with the inner surface of fixed cylinder two mutually fits
Match somebody with somebody but out of mesh external screw thread and internal thread, coarse-wire rope enters after fixed cylinder two is wrapped in roll two along external threaded surface
On, finally it is accommodated in take-up reel；The end of roll two is fixedly connected with the rotating shaft through take-up reel, and shake handle passes through connection
Bar is connected to rotating shaft free end.In practical application, shake handle is rotated, rotating shaft and roll two can be driven to rotate, so that
Steel wire rope moves into take-up reel, that is, realizes the effect of drawing steel wire rope, and reversion shake handle can loosen steel wire rope.Structure is set
Count ingenious and easy to operate.
(3) present invention is provided with synchronous crank closer structure in front of collection rope drive mechanism, is provided with synchronous crank closer structure and coiling
Axle two roll and fixed cylinder consistent with the assembling structure of fixed cylinder two, it can aid in the control to steel wire rope to affect, and
With the rotation for affecting the little gear for driving roll and being fixed on roll one end of steel wire rope, little gear drives what is engaged
Bull gear drive, and canine tooth wheel outer surface is uniformly engaged with four little gears described above, gear wheel also has driving to little gear
Effect, so as to make four little gears obtain synchronous equal motion effect.And roll corresponding to four little gears connects respectively
The steel wire rope on corresponding supporting leg is connect, so the effective guarantee synchronous operation of four supporting legs, is easy to accelerate the lifting of tables and chairs panel
Regulation, and be advantageous to improve the flatness holding during the regulation of tables and chairs panel.
(4) connected mode between shake handle and connecting rod is set to be flexibly connected by the present invention, and take-up reel direction is shaken
The side of handle is uniformly provided with the locking slot that at least four can engage with shake handle, and between connecting rod center and spindle central
Distance it is equal with the distance between spindle central with locking slot.In practical application, after shake handle is rotated in place, to rotating shaft
Place end presses shake handle, its face is locked groove location, and shake handle then is turned into take-up reel place one around connecting rod
Side, and shake handle free end is fastened in locking slot, the fixation to shake handle can be achieved, that is, realize to steel wire rope state
Locking.And retaining mechanism is provided between outer pillar lower end and interior pillar, the lock of state between outer pillar and interior pillar can be achieved
Tightly or loosen, so as to completely realize the locking function to tables and chairs panel.Smart structural design, and it is easy to operate.
To sum up, the present invention carries out tables and chairs panel lift adjustment from top to bottom, has laborsaving and the advantages of facilitate；And effectively protect
Hindered the synchronous operation of four supporting legs, be advantageous to accelerate tables and chairs panel lift adjustment and tables and chairs panel regulation during it is smooth
Degree is kept；And smart structural design, it is easy to operate.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 removes the structural representation after tables and chairs panel 40 for the present invention；
Fig. 3 is the structural representation longitudinal sectional view of roll 13 and fixed cylinder 14；
Fig. 4 is the internal structure sectional view of collection rope drive mechanism 20；
Fig. 5 is the top view of synchronous crank closer structure 10；
Fig. 6 is the structural representation of Section A-A in Fig. 5.
Wherein, 1- outer pillars, pillar in 2-, 3- preloading springs, 4- steel wire ropes, 5- coarse-wire ropes, 10- synchronization crank closers
Structure, 11- gear wheels, 12- little gears, 13- rolls, 14- fixed cylinders, 15- external screw threads, 16- internal threads, 17- supporting plates,
18- central shafts, 19- connecting rods two, 20- collection rope drive mechanisms, 21- rolls two, 22- fixed cylinders two, 23- take-up reels, 24- shake
Dynamic handle, 25- rotating shafts, 26- connecting rods, 27- locking slots, 30- supporting legs, 40- tables and chairs panels, 50- retaining mechanisms, 51- annular sleeves,
52- strip shape gobs, 53- nuts, 60- guide rollers mechanism, 61- roll wheels, 62- fixed blocks, 63- connecting rods.
Embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and examples.
Embodiment
A kind of lifting locking device of table and chair feet as shown in Figures 1 and 2, including tables and chairs panel 40 and it is separately fixed at it
Four supporting legs 30 on the corner of bottom surface, the supporting leg 30 include can pull plug-in type connection outer pillar 1 and interior pillar 2, it is described
The interior lower end of pillar 2 contacts ground, and the outer pillar 1 is connected to the interior upper end of pillar 2, and tables and chairs face is fixed in the upper end of outer pillar 1
The bottom surface of plate 40, retaining mechanism 50 is provided between the lower end of outer pillar 1 and interior pillar 2；The upper end of interior pillar 2 and tables and chairs panel
Preloading spring 3 is provided between 40 bottom surfaces, the interior upper end of pillar 2 is further fixed on the steel wire rope 4 parallel to preloading spring 3, described
The other end of steel wire rope 4 passes through the upper portion side wall of outer pillar 1, by synchronous crank closer structure 10, is finally accommodated in collection rope drive mechanism 20
In,
The synchronous crank closer structure 10 includes a gear wheel 11 and is uniformly engaged in four small teeth on the surface of gear wheel 11
Wheel 12, the little gear 12 is fixedly set in the one end of roll 13, as shown in figure 3, the external gap type of the roll 13 is arranged with
Fixed cylinder 14, the little gear 12 are located at outside fixed cylinder 14, the outer surface of the roll 13 and fixed cylinder 14 it is interior
Surface, which is respectively equipped with, to be adapted but out of mesh external screw thread 15 and internal thread 16, and the convex surfaces of the external screw thread 15 are provided with anti-skidding
Indentation；The steel wire rope 4 enters corresponding fixed cylinder 14 from corresponding one end of roll 13, is wrapped in along the convex surfaces of external screw thread 15
On the roll 13, finally corresponding fixed cylinder 14 is passed from the other end of roll 13；
The collection rope drive mechanism 20 includes roll 2 21, fixed cylinder 2 22, take-up reel 23 and shake handle 24, such as
Shown in Fig. 4, assembling structure and roll 13 and the assembling knot of fixed cylinder 14 of the roll 2 21 and fixed cylinder 2 22
Structure is consistent, and the end of fixed cylinder 2 22 is connected on take-up reel 23, and the end of roll 2 21 is fixedly connected with through receipts
The rotating shaft 25 of drum 23, the other end of rotating shaft 25 bend to square, and the shake handle 24 is connected to by connecting rod 26
The right angle end of rotating shaft 25, the shake handle 24 is located at the side relative with take-up reel 23 of connecting rod 26, and shake handle 24 is with connecting
For connected mode between extension bar 26 to be flexibly connected, the take-up reel 23 is uniformly provided with least 4 towards the side of shake handle 24
The individual locking slot 27 that can be engaged with shake handle 24, the distance between the center of connecting rod 26 and the center of rotating shaft 25 and locking slot
27 is equal with the distance between the center of rotating shaft 25；Four strands of steel wire ropes 4, which pass, closes that to be twisted one thick after corresponding fixed cylinder 14
Steel wire rope 5, then enter fixed cylinder 2 22 and along roll 2 21 from the one end relative with take-up reel 23 of roll 2 21
External screw thread convex surfaces are wrapped on roll 2 21, are finally accommodated in take-up reel 23.
In order to preferably control steel wire rope 4, each side of supporting leg 30 is respectively equipped with guide roller mechanism 60, the wire
Wheel mechanism 60 includes roll wheel 61, fixed block 62 and the connecting rod 63 for being held on the both ends of roll wheel 61 and connection fixing block 62,
The fixed block 62 is fixed on the bottom surface of tables and chairs panel 40；The steel wire rope 4 through after the upper portion side wall of outer pillar 1 first around corresponding
Roll wheel 61 is connected in synchronous crank closer structure 10.Roll wheel 61 can play limition orientation effect to steel wire rope 4, favorably
In the drawing for promoting steel wire rope 4 or loosen process.In addition, for the ease of easier during the rising regulation of tables and chairs panel 40
Steel wire rope 4 is pullled, swing handle can be fixed on roll wheel 61, in order to pull steel wire rope 4.Now pay attention to steel wire rope 4
Around a circle on roll wheel 61.
In the present embodiment, the retaining mechanism 50 includes being surrounded on the annular sleeve 51 in the interior outside of pillar 2, the annular sleeve
51 borders are uniformly provided with vertical strip shape gob 52, and the upper end closed of strip shape gob 52, and the lower end of strip shape gob 52 is extended under annular sleeve 51
Hold and be open, nut 53 is arranged with the annular sleeve 51, and the outer surface of the annular sleeve 51 is provided with phase with the inner surface of nut 53
The screw thread of adaptation.Strip shape gob 52 causes the bore of annular sleeve 51 to have the function of fine setting；By screwing or loosening nut 53, can tighten up
Or annular sleeve 51 is unclamped, it is simple in construction easily-controllable to realize the locking between outer pillar 1 and interior pillar 2 or loosen.
In the present embodiment, the specific mounting structure of the synchronous crank closer structure 10 is：Four fixed cylinders 14 are perpendicular
Straight setting and its top are fixed in the middle part of the bottom surface of tables and chairs panel 40, and the little gear 12 is located at immediately below fixed cylinder 14, such as Fig. 5
It is vertical at the upper surface center of supporting plate 17 and shown in Fig. 6, the gear wheel 11 and the lower section of little gear 12 are provided with supporting plate 17
Be fixed with the central shaft 18 through the center of gear wheel 11, the upper end of central shaft 18 be directly anchored to the bottom surface of tables and chairs panel 40 or
It is connected to by connecting rod 2 19 on fixed cylinder 14；Four strands of steel wire ropes 4 are respectively from the corresponding peripheral side lower end of fixed cylinder 14
Into out of this fixed cylinder 14 enclosing side upper end passes, and then collects on the center line together in the synchronous crank closer structure 10 and closes
Twist with the fingers.Synchronous crank closer structure 10 is fixed in the middle part of the bottom surface of tables and chairs panel 40, is advantageous between balanced each steel wire rope 4 and supporting leg 30
Draw, it may advantageously facilitate the synchronization of four lifting actions of supporting leg 30；Then fixed cylinder 14, which is vertically arranged, is easy to four strands
Steel wire rope 4 it is into and out, can prevent gear and roll 13 from dropping using supporting plate 17 and the structure of central shaft 18, ensure phase
Structural relation is closed, while meets the activity need of gear and roll 13；The threading mode of above-mentioned steel wire rope 4, is advantageous to prevent
Confusion, be easy to steel wire rope 4 pass around and transition.
In the present embodiment, the specific mounting structure of the collection rope drive mechanism 20 is：The fixed cylinder 2 22 is laterally
Set and its side is fixed on the lateral edges of 40 bottom surface of tables and chairs panel one, the shake handle 24 is located at the outside of tables and chairs panel 40；
The coarse-wire rope 5 closed after twisting with the fingers enters fixed cylinder 2 22 from fixed cylinder 2 22 towards one end of synchronous crank closer structure 10.
It is arranged such, is easy to user to operate, also allow for steel wire rope 4 passes around process.
The concrete application process of the lifting locking device of above-mentioned table and chair feet is：
(1) height of tables and chairs panel 40 is reduced：After unclamping four nuts 53, shake handle 24 is rotated, drives 25 turns of rotating shaft
Dynamic, rotating shaft 25 drives roll 2 21 to rotate, and coarse-wire rope 5 rotates with the external screw thread convex surfaces on roll 2 21 and to receipts
Drum 23 moves, and reaches the effect for tensing coarse-wire rope 5；The tense wire rope 4 (share split) of coarse-wire rope 5, steel wire rope 4 affect band
Dynamic roll 13 and it is fixed on the little gear 12 of the one end of roll 13 and rotates, little gear 12 drives the gear wheel engaged
11 rotate, and the outer surface of gear wheel 11 is uniformly engaged with four little gears 12 described above, and gear wheel 11 also has to little gear 12
Driving effect, so as to make four little gears 12 obtain synchronous equal motion effect；And coiling corresponding to four little gears 12
Axle 13 connects the steel wire rope 4 on corresponding supporting leg 30 respectively, and the steel wire rope 4 in supporting leg 30 is tightened up, and outer pillar 1 is pushed；To arrival
Shake handle 24 is pressed to the place end of rotating shaft 25 during object height, makes its position of face locking slot 27, then by shake handle 24
The side of take-up reel 23 is turned to around connecting rod 29, and the free end of shake handle 24 is fastened in locking slot 27, be i.e. locking is solid
Determine the state of steel wire rope 4；Then the nut 53 on four supporting legs 30 is screwed one by one, annular sleeve 51 is tightly pressed against on interior pillar 2,
The outer pillar that is locked 1 and the state of interior pillar 2.Complete the decline regulation and locking of tables and chairs panel 40.
(2) height of tables and chairs panel 40 is raised：After unclamping four nuts 53, shake handle 24, band are rotated backward with above-mentioned
Turn axle 25 rotates, and rotating shaft 25 drives roll 2 21 to rotate, and coarse-wire rope 5 is with the external screw thread convex surfaces on roll 2 21
Rotate, the coarse-wire rope 5 in take-up reel 23 is displaced outwardly, and reaches the effect for loosening coarse-wire rope 5；Coarse-wire rope 5 loosens steel wire
4 (share splits) of rope, pull in one end of the connection leg 30 of steel wire rope 4, can drive roll 13 and be fixed on the one end of roll 13
Little gear 12 is rotated, and four little gears 12 can be made to obtain synchronous equal motion effect as described above；And four little gears 12
Corresponding roll 13 connects the steel wire rope 4 on corresponding supporting leg 30 respectively, and the steel wire rope 4 in supporting leg 30 loosens, in preloading spring 3
Reset response under, tables and chairs panel 40 is jacked up upwards, pull outer pillar 1 rise,；When loosening enough to steel wire rope 4 as described above
The free end of shake handle 24 is fastened in locking slot 27, that is, be locked the state of steel wire rope 4；Then one by one by four supporting legs 30
On nut 53 screw, annular sleeve 51 is tightly pressed against on interior pillar 2, that is, the state of the outer pillar that is locked 1 and interior pillar 2.
Complete the rising regulation and locking of tables and chairs panel 40.
From the foregoing, the present invention carries out tables and chairs panel lift adjustment from top to bottom, have laborsaving and the advantages of facilitate；And
The effective guarantee synchronous operation of four supporting legs, during the lift adjustment and the regulation of tables and chairs panel that are advantageous to accelerate tables and chairs panel
Flatness keep；And smart structural design, it is easy to operate.
Those of ordinary skill in the art it should be appreciated that the embodiment of the above be intended merely to explanation the present invention,
And be not used as limitation of the invention, as long as in the spirit of the present invention, the change to embodiment described above
Change, modification will all fall in scope of the presently claimed invention.
Claims (5)
1. a kind of lifting locking device of table and chair feet, including tables and chairs panel (40) and be separately fixed on its bottom surface corner four
Supporting leg (30), it is characterised in that the supporting leg (30) include can pull plug-in type connection outer pillar (1) and interior pillar (2), institute
Interior pillar (2) lower end contact ground is stated, the outer pillar (1) is connected to interior pillar (2) upper end, and outer pillar (1) upper end is solid
Due to tables and chairs panel (40) bottom surface, retaining mechanism (50) is provided between outer pillar (1) lower end and interior pillar (2)；In described
Preloading spring (3) is provided between pillar (2) upper end and tables and chairs panel (40) bottom surface, interior pillar (2) upper end is further fixed on putting down
Row is in the steel wire rope (4) of preloading spring (3), and steel wire rope (4) other end passes through outer pillar (1) upper portion side wall, by synchronization
Crank closer structure (10), finally it is accommodated in collection rope drive mechanism (20),
The synchronous crank closer structure (10) includes a gear wheel (11) and is uniformly engaged in the four small of gear wheel (11) surface
Gear (12), the little gear (12) are fixedly set in roll (13) one end, and roll (13) external gap type is arranged with
Fixed cylinder (14), the little gear (12) are located at fixed cylinder (14) outside, the outer surface of the roll (13) and fixed cylinder
The inner surface of body (14), which is respectively equipped with, to be adapted but out of mesh external screw thread (15) and internal thread (16), the external screw thread (15)
Convex surfaces are provided with anti-skidding indentation；The steel wire rope (4) enters corresponding fixed cylinder (14), edge from corresponding roll (13) one end
External screw thread (15) convex surfaces are wrapped on the roll (13), and finally from roll (13), the other end passes corresponding fixed cylinder
Body (14)；
The collection rope drive mechanism (20) includes roll two (21), fixed cylinder two (22), take-up reel (23) and shake handle
(24), the assembling structure of the roll two (21) and fixed cylinder two (22) and roll (13) and the dress of fixed cylinder (14)
Distribution structure is consistent, and described (22) end of fixed cylinder two is connected on take-up reel (23), and described (21) end of roll two is fixed
The rotating shaft (25) through take-up reel (23) is connected with, rotating shaft (25) other end bends to square, the shake handle
(24) rotating shaft (25) right angle end is connected to by connecting rod (26), the shake handle (24) is located at connecting rod (26) and take-up reel
(23) relative side, and the connected mode between shake handle (24) and connecting rod (26) is to be flexibly connected, the take-up reel
(23) locking slot (27) that at least four can engage with shake handle (24), institute are uniformly provided with towards the side of shake handle (24)
State the distance between connecting rod (26) center and rotating shaft (25) center and the distance between locking slot (27) and rotating shaft (25) center
It is equal；Four bursts of steel wire ropes (4), which pass corresponding fixed cylinder (14), closes be twisted one coarse-wire rope (5) afterwards, then from coiling
Axle two (21) is into fixed cylinder two (22) and raised along the external screw thread of roll two (21) with the relative one end of take-up reel (23)
Surface wrap is finally accommodated in take-up reel (23) on roll two (21).
A kind of 2. lifting locking device of table and chair feet according to claim 1, it is characterised in that each supporting leg (30)
Side is respectively equipped with guide roller mechanism (60), and the guide roller mechanism (60) includes roll wheel (61), fixed block (62) and folder
The connecting rod (63) of roll wheel (61) both ends and connection fixing block (62) is held in, the fixed block (62) is fixed on tables and chairs panel
(40) bottom surface；The steel wire rope (4) around corresponding roll wheel (61) through being first connected to after outer pillar (1) upper portion side wall
In synchronous crank closer structure (10).
A kind of 3. lifting locking device of table and chair feet according to claim 1, it is characterised in that the retaining mechanism (50)
Including the annular sleeve (51) being surrounded on the outside of interior pillar (2), annular sleeve (51) border is uniformly provided with vertical strip shape gob
(52), and strip shape gob (52) upper end closed, strip shape gob (52) lower end extend to annular sleeve (51) lower end and are open, the annular sleeve
(51) nut (53) is arranged with, and the annular sleeve (51) outer surface is provided with the screw thread being adapted with nut (53) inner surface.
A kind of 4. lifting locking device of table and chair feet according to any one of claims 1 to 3, it is characterised in that four institutes
State that fixed cylinder (14) is vertically arranged and its top is fixed in the middle part of tables and chairs panel (40) bottom surface, the little gear (12) is positioned at solid
Immediately below safety barrel body (14), supporting plate (17), the supporting plate (17) are provided with below the gear wheel (11) and little gear (12)
The central shaft (18) through gear wheel (11) center is vertically and fixedly provided with the center of upper surface, central shaft (18) upper end is directly solid
It is scheduled on tables and chairs panel (40) bottom surface or is connected to by connecting rod two (19) on fixed cylinder (14)；Four bursts of steel wire ropes (4)
Enter respectively from corresponding fixed cylinder (14) peripheral side lower end, enclosing side upper end out of this fixed cylinder (14) passes, and then gathers
In on the center line of the synchronous crank closer structure (10) and closing sth. made by twisting.
5. the lifting locking device of a kind of table and chair feet according to any one of claims 1 to 3, it is characterised in that described solid
Safety barrel body two (22) is laterally set and its side is fixed on the lateral edges of tables and chairs panel (40) bottom surface one, the shake handle (24)
On the outside of tables and chairs panel (40)；The coarse-wire rope (5) closed after twisting with the fingers is from fixed cylinder two (22) towards synchronous crank closer structure
(10) one end enters fixed cylinder two (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711119337.4A CN107890202B (en) | 2017-11-14 | 2017-11-14 | Lifting locking device for table and chair legs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711119337.4A CN107890202B (en) | 2017-11-14 | 2017-11-14 | Lifting locking device for table and chair legs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107890202A true CN107890202A (en) | 2018-04-10 |
| CN107890202B CN107890202B (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711119337.4A Active CN107890202B (en) | 2017-11-14 | 2017-11-14 | Lifting locking device for table and chair legs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107890202B (en) |
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| CN108741625A (en) * | 2018-06-28 | 2018-11-06 | 浙江乐歌智能驱动科技有限公司 | A kind of rotary booster engine structure and its same table of application |
| CN108937110A (en) * | 2018-08-17 | 2018-12-07 | 尹宏 | A kind of drawstring control push rod, lifting table leg and same table |
| CN110169650A (en) * | 2019-06-03 | 2019-08-27 | 尹宏 | A kind of same table |
| CN111085400A (en) * | 2020-01-15 | 2020-05-01 | 陈佳佳 | Dispensing system of PCB |
| CN112369814A (en) * | 2020-11-13 | 2021-02-19 | 江西万友实业有限公司 | Retractable tablet chair convenient for classroom cleaning |
| CN114009927A (en) * | 2021-11-02 | 2022-02-08 | 广州市百利文仪实业有限公司 | Liftable table |
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| CN112369814A (en) * | 2020-11-13 | 2021-02-19 | 江西万友实业有限公司 | Retractable tablet chair convenient for classroom cleaning |
| CN114009927A (en) * | 2021-11-02 | 2022-02-08 | 广州市百利文仪实业有限公司 | Liftable table |
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| CN107890202B (en) | 2020-07-03 |
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Effective date of registration: 20200527 Address after: 311300 No.2 Qinglin street, Yaguan village, Qingshanhu street, Lin'an District, Hangzhou City, Zhejiang Province Applicant after: HANGZHOU HUAYU EDUCATION EQUIPMENT Co.,Ltd. Address before: 252000 No. 11 Longshan West Street, Dongchangfu District, Shandong, Liaocheng Applicant before: Zhang Yujing |
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Address after: 311300 No. 2, Qinglin street, Yaguan village, Qingshanhu street, Lin'an District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang Huayu Furniture Industry Co.,Ltd. Address before: 311300 No. 2, Qinglin street, Yaguan village, Qingshanhu street, Lin'an District, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU HUAYU EDUCATION EQUIPMENT Co.,Ltd. |