CN110522219A - A kind of application method of office chair - Google Patents

Abstract

The invention discloses a kind of application methods of office chair, the office chair includes moveable support base, seat, backrest, headrest and handrail, application method is the following steps are included: pull downwards the second end of the first drive rod, sliding rail is driven to move up, sliding rail, which moves up, drives drive sleeve to rise, drive sleeve rising drives the first control-rod to move up the first Contact plate of driving and squeezes the first gas lever switch bolt, and the rubber pad and ground face contact that drive connecting plate moves down driving support rod lower end are stretched out in the first cylinder lower end；When not needing mobile office chair, moving down support rod makes the rubber pad and ground face contact of support rod lower end, office chair can be prevented mobile by the frictional force on rubber pad and ground, and support protection can also be played the role of, in order to avoid universal wheel fractures, office chair is toppled over, when needing mobile office chair, support rod is moved up, does not influence the normal movement of office chair.

Description

A kind of application method of office chair

Technical field

The invention belongs to technical fields, more particularly, to a kind of application method of office chair.

Background technique

In recent years since, China Furniture Industry achieves unprecedented development, as the branch of furniture industry, China's office Furniture industry with the continuous renewal of production technology, being continuously increased of kind, Virtual production gradually form and management level Continuous improvement, also achieve rapid development.The market demand of domestic offices furniture accounts about furniture overall market in recent years 1/3, market scale is at 100,000,000,000 yuan or so.

Office chair is one of essential furniture of life and work, indispensable office when especially brain worker works Furniture.For the ease of movement, universal wheel is arranged in existing office chair on stabilizer blade mostly, but existing office chair can not will be done mostly Public chair is fixed on a position.

Summary of the invention

The present invention for overcome the deficiencies in the prior art, provides a kind of making for office chair that can be automatically controled office chair movement Use method.

To achieve the goals above, the invention adopts the following technical scheme: a kind of application method of office chair, the office Chair includes moveable support base, seat, backrest, headrest and handrail, and the support base includes chair leg, matches with the chair leg Close universal wheel, set on the chair bottom bracket, can opposite bracket move up and down connecting plate, be uniformly set on the connecting plate Support rod, the rubber pad set on the support rod bottom end, the first fixes sleeve, the first gas bar, with first fixes sleeve Cooperation the first control-rod, set on the first Contact plate of first control-rod lower end, set on first control-rod upper end Drive sleeve, the sliding rail being symmetrically set on the drive sleeve outer wall, with the first slide bar of sliding rail cooperation, be set to described the It fixed frame on one fixes sleeve outer wall, the first rotating shaft on the rotation connection fixed frame and is lost in a shaft set on described First drive rod, first drive rod are equipped with first end and second end, and first end and the first slide bar end are connected；Application method The following steps are included: pulling the second end of the first drive rod downwards, sliding rail is driven to move up, sliding rail, which moves up, to be driven in drive sleeve It rises, drive sleeve rising drives the first control-rod to move up and drives the first Contact plate the first gas lever switch bolt of extruding, under the first cylinder The rubber pad for driving connecting plate to move down driving support rod lower end and ground face contact are stretched out in end；When not needing mobile office chair, under Moving support rod makes the rubber pad and ground face contact of support rod lower end, can prevent office chair by the frictional force on rubber pad and ground It is mobile, and support protection can also be played the role of, in order to avoid universal wheel fractures, office chair is toppled over, when needing mobile office chair, Support rod is moved up, does not influence the normal movement of office chair.

The seat includes bottom plate, height adjustment device and air-breather, and the height adjustment device includes set on described The second gas bar in first fixes sleeve, the second fixes sleeve for being sheathed on the second gas bar upper end, with it is described second fixed Second drive rod of sleeve cooperation and the second Contact plate for driving boom end set on described second；Application method further includes following step Rapid: lower press compresses the second gas bar, and seat height reduces, and the second drive rod of rotation drives the rotation of the second Contact plate and the second gas The switch of bar bolts touching, and the second gas bar upper end is stretched out, and seat is driven to move up, and seat height is turned up；It, can by moving up and down bottom plate To adjust the height of seat, used convenient for the people of different height.

The air-breather includes the vent board for being equipped with venting cavity, the exhaust pipe being connected to the venting cavity, set on described The exhaust fan of exhaust pipe, with the vent board cooperation cushion, uniformly be set to the vent board on multiple snorkels and with institute The first elastic component of snorkel cooperation is stated, the snorkel is equipped with air channel, and the cushion is equipped with the groove cooperated with snorkel； Application method is further comprising the steps of: starting exhaust fan, people are sitting on cushion, squeeze snorkel and move down, drive one step of air channel It extend into venting cavity；The snorkel at cushion not deformation place can be made to remain closed by the way that the first elastic component is arranged, improved The ventilation effect of contact position.

The handrail include the first sliding groove for being symmetrically set in the bottom plate two sides, with the first sliding groove cooperation slide plate, The strut for being symmetrically set in the slide plate both ends, the first fixed block equipped with the first card slot, is set to the handle cooperated with the strut Inserted link and control device in first card slot, the strut upper end are flexibly connected with handle, and lower end is flexibly connected with slide plate, The slide plate is equipped with the inserting groove cooperated with the first fixed block, and the strut is equipped with the jack cooperated with inserted link；Application method is also The following steps are included: the first fixed block of pulling is detached from inserting groove, pushes and hand-drive strut is rotated, adjustment handle to suitable height Degree pushes the first fixed block to enter in inserting groove；By the height of regulation handle, can handle comfortably be supported Arm uses convenient for different people, and handle can be completely depressed at bottom plate, lies prone convenient for people by back.

The backrest includes folding device and the fixed device of backrest, and the folding device includes backrest main body, is symmetrically set in The rotary shaft of backrest main body two sides, is symmetrically set in the backrest main body folding back in the rotary shaft First fixed plate, with first fixed plate cooperation the first plate, set on first plate end drive block and be set to The second fixed plate on the folding back, second fixed plate are equipped with the slot of one first plate cooperation；Application method is also It drives the first plate to be detached from slot the following steps are included: pulling drive block, pushes folding back rotation fitting backrest main body；Pass through After folding back is turned to backrest main body, it can reduce the width of backrest, lie prone convenient for people and make a stretch of the arm by back.

It is described that lean against fixed device include mounting groove in the backrest main body, second in the mounting groove Shaft, the snap-gauge in the third shaft, is set to third shaft end at the third shaft in second shaft The ratchet in portion, the third fixed plate in backrest main body are inserted with the second plate of third fixed plate cooperation, set on described second Third drive rod and clamp system on plate are equipped with card slot, and the third fixed plate is equipped with second cooperated with third drive rod and slides Slot, second plate can be engaged with ratchet；Application method is further comprising the steps of: rotation snap-gauge to horizontality pushes seat Chair driving snap-gauge is moved to fixed position, pulls third drive rod downwards and the second plate is driven to be inserted into ratchet；Pass through rotation Snap-gauge can make snap-gauge using horizontality is kept, convenient for being fixed under backrest differing tilt angles.

The clamp system includes through slot, the first rack gear set on the through slot side and the institute on the snap-gauge It states the second rack gear and first rack gear that the first rack gear is correspondingly arranged and the gear that the second rack gear cooperates, be set to described first Upper clamp plate on rack gear, the lower clamp plate on second rack gear, the 4th fixed plate on the snap-gauge, be set to it is described The push rod of first upper end of the rack and the second elastic component being set on push rod；Application method is further comprising the steps of: pulling up Push rod drives the first rack gear to move up, and the first rack gear moves up the rotating forward of band moving gear and upper clamp plate moves up, and gear rotation drives the second tooth Item moves down driving lower clamp plate and moves down, and moved seat snaps onto fixed plate between upper and lower plywoods, unclamps push rod, the second elastic component The first rack gear is pushed to move down, the first rack gear moves down the reversion of band moving gear and upper clamp plate moves down, and gear rotation drives under the second rack gear Driving lower clamp plate is moved to move up；Backrest can be completely fixed on desk by upper lower clamp plate, in case office chair is toppled over.

The headrest includes the second fixed block being set in the backrest main body, second on second fixed block Slide bar, rotation be set to second slide bar upper end on the first fixed link, in first fixed link first headrest and The second headrest on first headrest；Application method is further comprising the steps of: the first 90 degree of headrest of rotation；Pass through rotation First 90 degree of headrest can make the second headrest horizontal positioned so that people places chin use, make one more easily.

The control device includes the first mounting hole being uniformly set in the first sliding groove, in the mounting hole Third elastic component, set on third elastic component end ball, uniformly be set to the slide plate in the second mounting hole, be set to institute It states the mandril in the second mounting hole, the first connecting plate for connecting the mandril, driving plate and is used to connect the first connecting plate With the second connecting plate of driving plate；Application method is further comprising the steps of: driving plate pulled upwards, and the first connecting plate is driven to move up, First connecting plate moves up driving mandril and moves up, and mandril, which moves up, drives ball the second mounting hole of disengaging, moving slide board to suitable location, Reset drives plate is moved down, drives mandril to move down, third resilient element urges ball enters in the second mounting hole.

In conclusion moving down support rod connects the rubber pad of support rod lower end with ground when not needing mobile office chair It is mobile can to prevent office chair by the frictional force on rubber pad and ground, and can also play the role of support protection for touching, in order to avoid The universal wheel office chair that fractures is toppled over, and when needing mobile office chair, support rod is moved up, does not influence the normal shifting of office chair It is dynamic.

Detailed description of the invention

Fig. 1 is the structural diagram of the present invention.

Fig. 2 is enlarged drawing at the A of Fig. 1.

Fig. 3 is front view of the invention.

Fig. 4 is schematic diagram of internal structure figure of the invention.

Fig. 5 is the enlarged drawing at the A of Fig. 4.

Fig. 6 is the enlarged drawing at the B of Fig. 4.

Fig. 7 is the enlarged drawing at the C of Fig. 4.

Fig. 8 is the enlarged drawing at the E of Fig. 4.

Fig. 9 is cross-sectional view of the invention.

Figure 10 is the enlarged drawing at the A of Fig. 9.

Figure 11 is the enlarged drawing at the B of Fig. 9.

Figure 12 is the enlarged drawing at the C of Fig. 9.

Specific embodiment

As shown in figs. 1-12, a kind of office chair, including support base, seat, backrest, headrest and handrail, the support bottom Seat includes chair leg 1, universal wheel 11, bracket 12, connecting plate 13, support rod 14, rubber pad 15, the first fixes sleeve 16, the first gas Bar 17, the first control-rod 18, the first Contact plate 19, drive sleeve 2, sliding rail 21, the first slide bar, fixed frame 23, first rotating shaft 24 And first drive rod 25, the chair leg 1 select conventional star base, the universal wheel 11 selects conventional universal wheel, quantity 5 It is a, each leg end portions of chair leg are separately fixed at, the bracket 12 is fixed on chair bottom, and the connecting plate 13 is selected and chair The identical steel plate of foot shape, the support rod 14 preferably 5, corresponding with the stabilizer blade of chair leg to be fixed on connecting plate 13, the rubber Rubber mat 15 selects conventional cylindrical rubber pad, is fixed on support rod bottom, both can also reduce support with increasing friction force The abrasion of bar；First fixes sleeve 16 is fixed on the center of chair leg vertically, and the first gas bar 17 selects conventional gas bar, It is fixed on the inner wall of the first fixes sleeve, output end passes through connecting plate 13, and is connected with connecting plate, first control-rod 18 It is symmetrically threaded through in the side wall of the first fixes sleeve, and can slide up and down, 19 both ends of the first Contact plate are separately fixed at The lower end of one control-rod 18, and it is located at the underface of the switch bolt of the first gas bar, the drive sleeve 2 is set in the first fixing sleeve Cylinder upper end, and be connected with the first control-rod upper end, the sliding rail 21 is symmetrically fixed on drive sleeve outer wall, the fixed frame 23 It being fixed on the first fixes sleeve outer wall, 24 both ends of first rotating shaft are rotatably connected on respectively on fixed frame 23, and described first Drive rod 25 selects curved rod, including first end 251 and second end 252, and middle part is fixed in first rotating shaft, first slide bar One end is fixed on the second end 252 of the first drive rod, and extend into sliding rail 21, then when not needing mobile office chair, downwards The second end of the first drive rod is pulled, sliding rail is driven to move up, sliding rail, which moves up, drives drive sleeve to rise, and drive sleeve, which rises, to be driven First control-rod moves up the first Contact plate of driving and squeezes the first gas lever switch bolt, and the first cylinder lower end, which is stretched out, drives connecting plate to move down The rubber pad and ground face contact for driving support rod lower end, can prevent office chair mobile by the frictional force on rubber pad and ground, And can also play the role of support protection, in order to avoid universal wheel fractures, office chair is toppled over, when needing mobile office chair, continue to Under pull the first drive rod second end, drive the first Contact plate to continue to move up so that connecting plate moves up, so that support rod moves up, The normal movement of office chair is not influenced.

The seat includes bottom plate 3, the second gas bar 31, the second fixes sleeve 32, the second drive rod 33, the second Contact plate 34, vent board 35, exhaust pipe 36, exhaust fan 37, cushion 38, snorkel 39 and the first elastic component 391, the second gas bar 31 select With conventional gas bar, lower end is fixed on the first fixes sleeve inner wall, and second fixes sleeve 32 is set in the second gas bar upper end, And it is fixed on 3 bottom of bottom plate, described second drive rod, 33 one end is extend into the second fixes sleeve, and second Contact plate 34 is solid It is scheduled on the second driving boom end, then press is descended to compress the second gas bar, seat height reduces, the second drive rod of rotation driving second The switch of Contact plate rotation and the second gas bar, which bolts, to be touched, and the second gas bar upper end is stretched out, and seat is driven to move up, and seat height is turned up； By moving up and down bottom plate, the height of adjustable seat uses convenient for the people of different height；The vent board 35 is equipped with ventilation Chamber is fixed on 3 upper surface of bottom plate, and the exhaust pipe 36 is fixed on bottom base plate, and is connected to venting cavity, and the exhaust fan 37 selects It with small-sized flabellum, is driven and is rotated with small machine, multiple holes passed through for snorkel are uniformly provided on the vent board, it is described logical Tracheae 39 is threaded through the hole on vent board, can move up and down, and air channel is offered on the tube wall of snorkel, first elasticity Part 391 selects spring, and quantity is identical with snorkel, and one end is fixed on ventilation bottom of the tube, and the other end is fixed on venting cavity bottom, In Not in the case of by external force, the first elastic component, which can be pushed just, to be moved on to air channel and is completely in above vent board on snorkel, described Cushion 38 selects conventional sponges cushion, is fixed on vent board, and is uniformly provided with the groove for snorkel insertion, then starts row Fan, people are sitting on cushion, will squeeze cushion deformation, will squeeze snorkel at cushion deformation and move down, air channel a part protrudes into Into venting cavity, so that venting cavity is connected to cushion, cushion and people contact position are aerated；It can by the first elastic component of setting So that the snorkel at cushion not deformation place remains closed, the ventilation effect of contact position is improved.

The handrail includes first sliding groove 4, slide plate 41, strut 42, handle 43, the first fixed block 44, the peace of inserted link 45, first Fill hole 46, third elastic component 47, ball 48, the second mounting hole, mandril 49, the first connecting plate 491, the second connecting plate and driving plate 493, the first sliding groove 4 is T-slot, is symmetrically provided with bottom plate two sides, the slide plate 41 is symmetrically set in first sliding groove 4, can Opposite first sliding groove is slided, and the strut 42 is symmetrically set in slide plate both ends, and lower end is rotatably connected on slide plate 41 by axis, described Handle 43 is rotatably connected on 42 upper end of strut by axis, and first fixed block 44 is equipped with the first card slot, can be caught in strut, institute It states inserted link 45 to be fixed in the first card slot of the first fixed block, can be inserted by the jack being provided on strut, the inserting groove It is provided on slide plate, for the insertion of the first fixed block, by the cooperation of the first fixed block and inserting groove, fixation can be played to strut Effect then pulls the first fixed block to be detached from inserting groove in order to avoid in use, handle moves up and down, and pushes hand-drive branch Bar rotation, adjustable handle allow handle comfortably to support arm to suitable height, convenient for different people use, and can will be Hand is completely depressed at bottom plate, is lain prone convenient for people by back；First mounting hole 46 is uniformly provided with the upside of first sliding groove Wall, the third elastic component 47 select spring, and upper end is fixed in the first mounting hole, and the ball 48 selects conventional ball, Gu It is scheduled on the lower end of third elastic component, second mounting hole is uniformly provided on slide plate, and the mandril 49 is set to the second mounting hole, First connecting plate 491 is set in slide plate, is connected with each mandril, and be equipped in slide plate and move up and down for the first connecting plate Chamber, second one end of the connection board is fixed on the first connecting plate, and the other end is pierced by slide plate, and slide plate offers and connects for second The slot that fishplate bar moves up and down, the driving plate 493 are fixed on the second connecting plate end, then pull driving plate upwards and drive first to connect Fishplate bar moves up, and the first connecting plate moves up driving mandril and moves up, and mandril moves up driving ball and is detached from the second mounting hole, and slide plate is mobile It to suitable location, is easy to use, reset drives plate is moved down after adjusting, mandril is driven to move down, the rolling of third resilient element urges Pearl enters in the second mounting hole, and anti-limited slip plate is mobile.

The backrest includes backrest main body 5, rotary shaft 51, folding back 52, the first fixed plate 53, the first plate 54, drives Motion block, the second fixed plate 55, mounting groove, the second shaft 56, third shaft 57, snap-gauge 58, ratchet 59, third fixed plate 591, Two plates 592, third drive rod 593 and clamp system, the backrest main body 5 are fixed on bottom plate, and the rotary shaft 51 rotates Backrest main body two sides are connected to, the folding back 52 is fixed in rotary shaft 51, then folding back is turned to backrest main body Afterwards, the width that can reduce backrest, lies prone convenient for people and makes a stretch of the arm by back；First fixed plate 53 is fixed on backrest main body On, and it is equipped with the slot for the cooperation of the first plate, first plate 54 is threaded through in the first fixed plate, and the drive block is fixed on On first plate, second fixed plate 55 is fixed on folding back, and offers the slot for the insertion of the first plate 54, then By the way that the first plate is inserted into the second fixed plate, can doubling fold against back and play a supporting role；The mounting groove is provided with backrest In main body, 56 both ends of the second shaft are rotatably connected in mounting groove respectively, and the third shaft 57, which is arranged, is fixed on second In shaft, the snap-gauge 58 is fixed in third shaft, and offers card slot, and the ratchet 59 is fixed on third roller end, The third fixed plate 591 is fixed in backrest main body, is located at right above ratchet, and it is solid that second plate 592 is threaded through third It in fixed board, can be slided up and down with respect to third fixed plate, the third drive rod 593 is fixed on the second plate, and the third Fixed plate is equipped with the second sliding slot cooperated with third drive rod, then by rotation snap-gauge, snap-gauge can be made horizontal using holding State convenient for being fixed under backrest differing tilt angles, and by the way that the second plate to be inserted into ratchet, can prevent snap-gauge It rotates again, guarantees the fixed effect of snap-gauge.

The clamp system includes through slot 6, the first rack gear 61, the second rack gear 62, gear, upper clamp plate 64, lower clamp plate 65, Four fixed plates 66, push rod 67 and the second elastic component 68, the through slot 6 are provided in snap-gauge, and first rack gear 61 selects routine Rack gear is set on the left of through slot, and second rack gear 62 selects conventional rack gear, is set on the right side of through slot, and the gear selects conventional tooth Wheel, is rotatably connected on through slot side wall, and engage with the first rack gear and the second rack gear, the upper clamp plate 64 is fixed on the first rack gear On, and be located in card slot, the lower clamp plate 65 is fixed on the second rack gear, is located at below upper clamp plate, and the 4th fixed plate 66 is solid It is scheduled on snap-gauge, the push rod 67 passes through the 4th fixed plate 66, and lower end is fixed on the first rack gear, and second elastic component 68 selects It with spring, is set on push rod 67, upper end is fixed on the 4th fixed plate, and lower end is fixed on the first rack gear, then rotates snap-gauge to water Level state pulls up push rod and the first rack gear is driven to move up, and the first rack gear moves up the rotating forward of band moving gear and upper clamp plate moves up, gear Rotation drives the second rack gear to move down driving lower clamp plate and moves down, and moved seat snaps onto fixed plate between upper and lower plywoods, pushes seat Chair driving snap-gauge is moved to desk, snaps onto desk tops in card slot, pulls third drive rod downwards and drives the second plate Be inserted into ratchet, unclamp push rod, second the first rack gear of resilient element urges moves down, the first rack gear move down the reversion of band moving gear and on Clamping plate moves down, gear rotation drive the second rack gear move down driving lower clamp plate move up, and then by desktop be clamped on upper and lower plywoods it Between, so that backrest is completely fixed on desk, in case office chair is toppled over.

The headrest includes the second fixed block 7, the second slide bar 71, the first fixed link 72, first headrest 73 and the second headrest 74, second fixed block 7 is fixed in backrest main body, and second slide bar 71 is fixed on the second fixed block, and described first Fixed link 72 is rotatably connected on 71 upper end of the second slide bar, and first headrest 73 is fixed in the first fixed link, and described second Pillow 74 is fixed on the first headrest, then under can making the second headrest is horizontal positioned to place for people by the first 90 degree of headrest of rotation Bar use, make one more easily.

The application method of office chair includes: a. to pull the second end of the first drive rod downwards, drives sliding rail to move up, sliding rail It moves up and drive sleeve is driven to rise, drive sleeve rising drives the first control-rod to move up the first Contact plate of driving and squeezes the first gas bar Bolt is switched, the rubber pad for driving connecting plate to move down driving support rod lower end and ground face contact are stretched out in the first cylinder lower end；B. it pushes Bottom plate compresses the second gas bar, and seat height reduces, and the second Contact plate of the driving rotation of the second drive rod of rotation is opened with the second gas bar Bolt touching is closed, the second gas bar upper end is stretched out, and seat is driven to move up, and seat height is turned up;C. start exhaust fan, people is sitting in cushion On, it squeezes snorkel and moves down, one step of air channel is driven to extend into venting cavity;D. the first fixed block is pulled to be detached from inserting groove, under The rotation of handle hand-drive strut, adjustment handle to suitable height push the first fixed block to enter in inserting groove;E. drive is pulled Motion block drives the first plate to be detached from slot, pushes folding back rotation fitting backrest main body;F. rotation snap-gauge is to horizontality, It pushes seat driving snap-gauge to be moved to fixed position, pulls third drive rod downwards and the second plate is driven to be inserted into ratchet;g. Pulling up push rod drives the first rack gear to move up, and the first rack gear moves up the rotating forward of band moving gear and upper clamp plate moves up, and gear rotates band Dynamic second rack gear moves down driving lower clamp plate and moves down, and moved seat snaps onto fixed plate between upper and lower plywoods, unclamps push rod, the Two the first rack gears of resilient element urges move down, and the first rack gear moves down the reversion of band moving gear and upper clamp plate moves down, and gear rotation drives the Two rack gears move down driving lower clamp plate and move up;H. the first 90 degree of headrest of rotation.

Claims (9)

1. a kind of application method of office chair, it is characterised in that: the office chair includes moveable support base, seat, leans on Back, headrest and handrail, the support base include chair leg (1) and chair leg cooperation universal wheel (11), are set to the chair leg (1) bracket (12) of bottom, can with respect to the connecting plate (13) that bracket moves up and down, uniformly be set to the connecting plate (13) on branch Strut (14), be set to the rubber pad (15) of the support rod (14) bottom end, the first fixes sleeve (16), the first gas bar (17), with The first control-rod (18) of the first fixes sleeve cooperation, the first Contact plate for being set to the first control-rod (18) lower end (19), the drive sleeve (2) of the first control-rod (18) upper end, the sliding rail being symmetrically set on the drive sleeve outer wall are set to (21), the first slide bar, the fixed frame (23) on the first fixes sleeve (16) outer wall, rotation cooperated with the sliding rail Connection and the first rotating shaft (24) on the fixed frame (23) and the first drive rod (25) being set on the first rotating shaft (24), First drive rod (25) is equipped with first end (251) and second end (252), and first end and the first slide bar end are connected；It uses Method is the following steps are included: pull downwards the second end of the first drive rod, and drive sliding rail moves up, and sliding rail moves up drive drive sleeve Rise, drive sleeve, which rises, drives the first control-rod to move up driving the first Contact plate the first gas lever switch bolt of extruding, the first cylinder The rubber pad for driving connecting plate to move down driving support rod lower end and ground face contact are stretched out in lower end.

2. a kind of application method of office chair according to claim 1, it is characterised in that: the seat include bottom plate (3), Height adjustment device and air-breather, the height adjustment device include the second gas bar in first fixes sleeve (31), be sheathed on the second gas bar (31) upper end the second fixes sleeve (32), the with second fixes sleeve cooperation Two drive rods (33) and the second Contact plate (34) for driving boom end set on described second；Application method is further comprising the steps of: Lower press compresses the second gas bar, and seat height reduces, and the second drive rod of rotation drives the rotation of the second Contact plate and the second gas bar Switch bolt touching, the second gas bar upper end stretch out, drive seat move up, be turned up seat height.

3. a kind of application method of office chair according to claim 2, it is characterised in that: the air-breather includes being equipped with The vent board (35) of venting cavity, the exhaust pipe (36) being connected to the venting cavity, the exhaust fan for being set to the exhaust pipe (36) (37), with the vent board cooperation cushion (38), uniformly be set to the vent board (35) on multiple snorkels (39) and with The first elastic component (391) of the snorkel cooperation, the snorkel are equipped with air channel, and the cushion is equipped with to be cooperated with snorkel Groove；Application method is further comprising the steps of: starting exhaust fan, people are sitting on cushion, squeeze snorkel and move down, drive ventilation One step of slot is extend into venting cavity.

4. a kind of application method of office chair according to claim 1, it is characterised in that: the handrail includes being symmetrically set in The first sliding groove (4) of bottom plate (3) two sides, is symmetrically set in the slide plate at the slide plate (41) cooperated with the first sliding groove (4) The strut (42) at both ends, the first fixed block (44) equipped with the first card slot, is set to the handle (43) cooperated with the strut (42) Inserted link (45) and control device in first card slot, the strut upper end are flexibly connected with handle, lower end and slide plate activity Connection, the slide plate are equipped with the inserting groove cooperated with the first fixed block, and the strut is equipped with the jack cooperated with inserted link；User Method is further comprising the steps of: pulling the first fixed block to be detached from inserting groove, pushes and hand-drive strut is rotated, adjustment handle is to suitable Highly, the first fixed block is pushed to enter in inserting groove.

5. a kind of application method of office chair according to claim 1, it is characterised in that: the backrest includes folding device With the fixed device of backrest, the folding device includes backrest main body (5), the rotation for being symmetrically set in backrest main body (5) two sides Axis (51), the folding back (52) being set on the rotary shaft (51), the first fixed plate being symmetrically set in the backrest main body (53), with the first plate (54) of first fixed plate cooperation, set on the drive block of first plate end and set on institute The second fixed plate (55) on folding back is stated, second fixed plate sets the slot with the cooperation of the first plate；Application method is also It drives the first plate to be detached from slot the following steps are included: pulling drive block, pushes folding back rotation fitting backrest main body.

6. a kind of application method of office chair according to claim 5, it is characterised in that: described to lean against fixed device and include Mounting groove in the backrest main body, is set to second shaft at the second shaft (56) in the mounting groove (56) the third shaft (57) on, the snap-gauge (58) in the third shaft, set on the ratchet of the third roller end (59), the third fixed plate (591) in backrest main body, with third fixed plate (591) cooperation the second plate (592), set In third drive rod (593) and clamp system on second plate (592), the snap-gauge is equipped with card slot, and the third is solid Fixed board is equipped with the second sliding slot cooperated with third drive rod, and second plate can be engaged with ratchet；Application method further include with Lower step: rotation snap-gauge to horizontality pushes seat driving snap-gauge to be moved to fixed position, pulls the drive of third drive rod downwards Dynamic second plate is inserted into ratchet.

7. a kind of application method of office chair according to claim 6, it is characterised in that: the clamp system includes being set to Through slot (6) on the snap-gauge, set on the through slot side the first rack gear (61), be correspondingly arranged with first rack gear the Two rack gears (62), the gear cooperated with first rack gear and the second rack gear, the upper clamp plate being set on first rack gear (61) (64), the lower clamp plate (65) on second rack gear, the 4th fixed plate (66) on the snap-gauge, be set to described the The push rod (67) of one upper end of the rack and the second elastic component (68) being set on push rod (67)；Application method further includes following step It is rapid: to pull up push rod and the first rack gear is driven to move up, the first rack gear moves up the rotating forward of band moving gear and upper clamp plate moves up, gear rotation It driving the second rack gear to move down driving lower clamp plate to move down, moved seat snaps onto fixed plate between upper and lower plywoods, push rod is unclamped, Second the first rack gear of resilient element urges moves down, and the first rack gear moves down the reversion of band moving gear and upper clamp plate moves down, and gear rotation drives Second rack gear moves down driving lower clamp plate and moves up.

8. a kind of application method of office chair according to claim 1, it is characterised in that: the headrest includes set on described The second fixed block (7) in backrest main body, the second slide bar (71) on second fixed block, rotation are set to described second Described first is rested the head on (73) and are set to the first fixed link (72) on slide bar upper end, first in first fixed link The second headrest (74) on pillow；Application method is further comprising the steps of: the first 90 degree of headrest of rotation.

9. a kind of application method of office chair according to claim 4, it is characterised in that: the control device includes uniform The first mounting hole (46) in the first sliding groove (4), the third elastic component in first mounting hole (46) (47), the ball (48) for being set to third elastic component (47) end, is set to the second mounting hole being uniformly set in the slide plate Mandril (49) in second mounting hole, the first connecting plate (491) for connecting the mandril, driving plate (493) and use In the second connecting plate of connection the first connecting plate and driving plate；Application method is further comprising the steps of: pulling driving plate band upwards Dynamic first connecting plate moves up, and the first connecting plate moves up driving mandril and moves up, and mandril moves up driving ball and is detached from the second mounting hole, moves Dynamic slide plate moves down reset drives plate to suitable location, drives mandril to move down, third resilient element urges ball enters the second installation In hole.