CN112971427A

CN112971427A - Multifunctional office chair

Info

Publication number: CN112971427A
Application number: CN202110503354.8A
Authority: CN
Inventors: 胡高平; 胡安普
Original assignee: Hangzhou Sihai Optical Fiber Network Co ltd
Current assignee: Hangzhou Sihai Optical Fiber Network Co ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2021-06-18

Abstract

The invention is suitable for the technical field of office furniture, and provides a multifunctional office chair, which comprises a chair seat, a chair back, foot supports and a base, and also comprises: the massage mechanism is arranged in a second mounting groove formed in the chair back and massages the back of a user in a reciprocating knocking mode; the placing mechanism is arranged on the base and used for placing a keyboard, a mouse and a display; according to the invention, a user adjusts the angle between the chair back and the chair seat to a comfortable angle through the adjusting mechanism, and simultaneously stretches out the foot supports from the lower part of the chair seat to facilitate the user to place two legs, so that the user can operate a computer by lying on the device, and the back of the user can be massaged through the massaging mechanism, thereby further improving the comfort of the device.

Description

Multifunctional office chair

Technical Field

The invention belongs to the technical field of office furniture, and particularly relates to a multifunctional office chair.

Background

People can not leave the office chair in daily work. The office chair refers to not only a chair used in an office, but also a back rest chair on which a person sits when performing desktop work in a sitting posture, and specific categories of the office chair include, but are not limited to, a guest chair, a clerk chair, a conference chair, a visitor chair, a training chair, and the like.

The existing office chair usually comprises a chair frame, a chair cushion, a chair back and armrests, the computer is often required to be operated by sitting on the chair for a long time when the chair works, a notebook computer placing device is also provided to place the notebook computer on the office chair, but the existing market is lack of an office chair which can integrate parts such as a host computer display and the like on the office chair, and can be adjusted in multiple angles according to the requirements of users to realize multiple sitting and lying postures.

Disclosure of Invention

The embodiment of the invention aims to provide a multifunctional office chair, and aims to solve the problems that a user often needs to sit on the office chair for a long time to operate a computer during working, the neck and the shoulder are easy to fatigue for a long time, and the user cannot operate the computer in a state of lying on the office chair.

The embodiment of the invention is realized in such a way that the multifunctional office chair comprises a chair seat, a chair back and foot supports arranged on one side of the chair seat, a base arranged on one side of the chair seat close to the ground, and the multifunctional office chair also comprises:

the massage mechanism is arranged in a second mounting groove formed in the chair back and massages the back of a user in a reciprocating knocking mode;

the placing mechanism is arranged on the base and used for placing a keyboard, a mouse and a display; and

the adjusting mechanism is arranged in a first mounting cavity formed in the seat and used for adjusting the angle between the chair back and the seat and the stretching of the foot supports and controlling the opening and closing state of the placing mechanism.

Further technical solution, the adjusting mechanism includes a first driving member, and further includes:

the driving assembly is connected with the output end of the first driving piece and is used for providing driving force for angle adjustment of the chair back and telescopic movement of the foot supports so as to place the opening and closing movement of the mechanism;

and the adjusting assembly is connected with the driving assembly and used for switching the connection state of the driving assembly to realize the connection of the driving assembly with the chair back and the foot support or the connection with the placing mechanism.

According to the technical scheme, the driving assembly comprises a main driving shaft connected with the output end of the first driving piece, the second driving shaft and the third driving shaft are respectively sleeved with a bevel gear meshed with the bevel gear on the main driving shaft, the main driving shaft drives the second driving shaft and the third driving shaft to rotate simultaneously through the meshing of the bevel gears, the third driving shaft drives an annular rack on the lower portion of the chair back to move through a gear matched with the third driving shaft, and the second driving shaft drives the foot support to move through a group of telescopic assemblies.

Further technical scheme, the adjusting part includes second driving piece and slidable mounting and the epaxial regulation sliding sleeve of main drive, there is the rack second driving piece's output through gear connection, and first installation cavity is inside to be provided with and to be used for the deflector of rack motion direction, the one end that the second driving piece was kept away from to the rack is connected with the regulation pole, and adjusts the pole and run through and be connected with rack complex deflector and with the regulation sliding sleeve.

Further technical scheme, flexible subassembly is located the epaxial connecting plate of second drive including the cover, be connected with the connecting sleeve through two telescopic links on the connecting plate, and two telescopic links are located the both sides of second drive axle respectively, and the connecting sleeve is kept away from the one end of connecting plate and is held in the palm with the foot and be connected, just the connecting sleeve passes through screw-thread fit with the second drive axle for drive foot holds in the palm along second drive axle reciprocating motion.

According to a further technical scheme, the massage mechanism comprises a third driving piece and a plurality of massage assemblies, the massage assemblies are connected with the output end of the third driving piece through a transmission assembly, and the transmission assembly drives the massage assemblies to reciprocate through the third driving piece to massage the back of a user.

Further technical scheme, the massage subassembly includes the first pivot of being connected with transmission assembly, first pivot is installed inside the second mounting groove through two installation pieces, rotate on the first pivot and be connected with the push rod, the one end of push rod is connected with the slider through a connecting rod, installs the massage head that is used for the massage on the slider, and the guiding hole that matches with the slider figure is seted up to the back of the chair lateral wall for make the slider drive the massage head along guiding hole reciprocating motion.

Further technical scheme, place the mechanism including the cover locate two adjusting sleeves on the base, the first pivot of being connected with adjusting mechanism and be used for placing the display mounting bracket of display and the keyboard mounting bracket that is used for placing keyboard mouse, adjusting sleeve locates the meshing of the epaxial long gear of first pivot through a gear and cover respectively, and the gear on two adjusting sleeves is the helical gear, and the spiral opposite direction of two helical gears, and the epaxial long gear of first pivot is corresponding to be provided with two sections opposite spiral opposite direction, just display mounting bracket and keyboard mounting bracket are connected with the lateral wall of an adjusting sleeve respectively, display mounting bracket and keyboard mounting bracket are connected with the back of the chair through a control lever respectively, just the both ends of control lever are connected with corresponding part through an universal ball respectively.

According to the technical scheme, one end, away from the adjusting sleeve, of the keyboard mounting frame is connected with a placing plate, and a keyboard placing groove used for placing a keyboard, a mouse placing groove used for placing a mouse and a wireless charging device are formed in the placing plate.

Further technical scheme, one side that first installation cavity is close to the base is connected with the cooling tube, be connected with on the cooling tube and be used for radiating fan, just the one end that first installation cavity was kept away from to the cooling tube is connected with the second mounting groove.

When the multifunctional office chair provided by the embodiment of the invention is used, a user opens the placing mechanism towards two sides through the adjusting mechanism before sitting on the chair seat, closes the placing mechanism after sitting on the chair seat, so that a keyboard, a mouse and a display are both arranged right in front of the user, adjusts the angle between the chair back and the chair seat to a comfortable angle through the adjusting mechanism, extends the foot supports out of the lower part of the chair seat to facilitate the user to place two legs, the user can operate a computer when lying on the multifunctional office chair, and can massage the back of the user through the massaging mechanism, thereby effectively solving the problem of neck and shoulder pain caused by the user sitting on the office chair for a long time.

Drawings

Fig. 1 is a schematic structural diagram of a multifunctional office chair according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a region A in a multifunctional office chair according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a region B in a multifunctional office chair according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an adjustment assembly in a multifunctional office chair according to an embodiment of the present invention;

fig. 5 is a schematic view illustrating a connection state of a massage assembly in a multifunctional office chair according to an embodiment of the present invention;

fig. 6 is a schematic three-dimensional structure of a massage assembly in a multifunctional office chair according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a telescoping assembly in a multifunctional office chair according to an embodiment of the invention;

fig. 8 is a schematic structural view of a placement board in a multifunctional office chair according to an embodiment of the present invention;

fig. 9 is another schematic structural view of a massage assembly in a multifunctional office chair according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a placement mechanism in a multifunctional office chair according to an embodiment of the present invention.

In the drawings: a seat 1; a chair back 2; a base 3; a first mounting cavity 4; a host 5; a second driving member 6; a first rotating shaft 7; an adjusting sleeve 8; a display mounting bracket 9; a keyboard mounting frame 10; a second mounting groove 11; a third driver 12; a second drive shaft 13; a first rotating shaft 14; a guide hole 15; a push rod 16; a slider 17; a massage head 18; a first driving member 19; a main drive shaft 20; a second drive shaft 21; an annular rack 22; a connecting plate 23; a connecting sleeve 24; a foot rest 25; a placement plate 26; a keyboard placement groove 27; a wireless charging device 28; a mouse placement slot 29; a rack 30; an adjustment lever 31; an adjusting slide 32; a fan 33; a heat radiating pipe 34; a third drive shaft 35; a mounting plate 36; a turntable 37; a push block 38; a guide block 39; a connecting rod 40.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Specific implementations of the present invention are described in detail below with reference to specific embodiments.

As shown in fig. 1, a multifunctional office chair provided for an embodiment of the present invention includes a chair seat 1, a chair back 2 and a foot rest 25 disposed on one side of the chair seat 1, and a base 3 disposed on one side of the chair seat 1 close to the ground, and further includes:

the massage mechanism is arranged in a second mounting groove 11 formed in the chair back 2 and massages the back of a user in a reciprocating knocking mode;

the placing mechanism is arranged on the base 3 and used for placing a keyboard, a mouse and a display; and

and the adjusting mechanism is arranged in the first installation cavity 4 formed in the chair seat 1 and used for adjusting the angle between the chair back 2 and the chair seat 1 and the stretching of the foot supports 25 and controlling the opening and closing state of the placing mechanism.

In the embodiment of the invention, when the chair is used, a user opens the placing mechanism towards two sides through the adjusting mechanism before sitting on the chair seat 1, closes the placing mechanism after sitting on the chair seat 1, so that a keyboard, a mouse and a display are placed right in front of the user, adjusts the angle between the chair back 2 and the chair seat 1 to a comfortable angle through the adjusting mechanism, extends the foot supports 25 out of the lower part of the chair seat 1 to facilitate the user to place two legs, and the user can operate a computer by lying on the chair, and can massage the back of the user through the massaging mechanism.

As shown in fig. 1, 2 and 4, as a preferred embodiment of the present invention, the adjusting mechanism includes a first driving member 19, and further includes:

the driving component is connected with the output end of the first driving piece 19 and is used for providing driving force for the angle adjustment of the chair back 2 and the telescopic motion of the foot supports 25 and the opening and closing motion of the placing mechanism;

and the adjusting component is connected with the driving component and used for switching the connection state of the driving component to realize the connection of the driving component with the chair back 2 and the foot supports 25 or the connection with the placing mechanism.

In the embodiment of the invention, the first driving part 19 drives the driving component to move, the driving component drives the adjusting component to move, the angle adjustment of the chair back 2 and the control of the stretching state of the foot supports 25 can be realized, and the opening and closing of the placing mechanism can be controlled, so that a user can conveniently sit on the chair seat 1 and use a computer on the chair seat 1. In this embodiment, the adjustment mechanism of an alternative can independently set up two first driving pieces 19, and one of them first driving piece 19 is used for the angle modulation of synchronous control back of the chair 2 and the concertina movement of foot rest 25, and another first driving piece 19 is used for controlling the state of opening and shutting of placing the mechanism, first driving piece 19 can be motor or hand wheel.

As shown in fig. 1-2, as a preferred embodiment of the present invention, the driving assembly includes a main driving shaft 20 connected to the output end of the first driving member 19, the second driving shaft 21 and the third driving shaft 35 are respectively sleeved with a bevel gear engaged with the bevel gear on the main driving shaft 20, the main driving shaft 20 drives the second driving shaft 21 and the third driving shaft 35 to rotate simultaneously through the engagement of the bevel gears, the third driving shaft 35 drives the annular rack 22 at the lower part of the chair back 2 to move through the gear engaged with the third driving shaft 35, and the second driving shaft 21 drives the foot rest 25 to move through a set of telescopic assemblies.

In the embodiment of the invention, the main driving shaft 20 is driven to rotate by the first driving part 19, the main driving shaft 20 drives the second driving shaft 21 and the third driving shaft 35 to rotate at the same time by a bevel gear, the third driving shaft 35 drives a rotating shaft to rotate by a pair of meshed bevel gears, the meshing of a gear sleeved on the rotating shaft and the annular rack 22 drives the chair back 2 to rotate by taking one end close to the third driving shaft 35 as a rotating center, so that the angle of the chair back 2 relative to the chair seat 1 is adjusted, the second driving shaft 21 drives the telescopic assembly to move, so that the foot supports 25 extend out of the lower part of the chair seat 1, and a user can conveniently place two legs when lying on the device. In this embodiment, in an alternative driving assembly, one end of the second driving shaft 21 far from the first driving member 19 is connected to a rotating rod which is also arranged and connected to the foot rest 25, one end of the rotating rod close to the second driving shaft 21 is also provided with an annular rack 22, and the foot rest 25 is driven to rotate by the cooperation of the second driving shaft 21 and the annular rack 22, so that the foot rest 25 can be lifted from the lower part of the seat 1 in a rotating manner, and the effect of adjusting the angle of the leg of the user can be achieved.

As shown in fig. 4, as a preferred embodiment of the present invention, the adjusting assembly includes a second driving member 6 and an adjusting sliding sleeve 32 slidably mounted on the main driving shaft 20, an output end of the second driving member 6 is connected with a rack 30 through a gear, a guide plate for guiding the movement of the rack 30 is disposed inside the first mounting cavity 4, an adjusting rod 31 is connected to one end of the rack 30 away from the second driving member 6, the adjusting rod 31 penetrates through the guide plate matched with the rack 30 and is connected with the adjusting sliding sleeve 32, and a bevel gear engaged with the second driving shaft 21 and the third driving shaft 35 and a gear engaged with the placing mechanism are respectively disposed at two ends of the adjusting sliding sleeve 32. The second drive member 6 may be a low speed motor or a manually operated wheel.

In the embodiment of the invention, the second driving member 6 is meshed with the rack 30 through a gear to drive the rack 30 to move along the axial direction of the main driving shaft 20, the rack 30 drives the adjusting sliding sleeve 32 to move synchronously through the adjusting rod 31, and the driving assembly can realize synchronous control of the inclination angle of the chair back 2 and the extension and retraction of the foot rest 25 and independent control of the opening and closing of the placing mechanism through the movement of the adjusting sliding sleeve 32. In this embodiment, an alternative adjusting assembly can replace the second driving member 6 and the rack 30 with a telescopic rod, such as a hydraulic telescopic rod, an electric telescopic rod, etc., and the telescopic rod can be extended to drive the adjusting sliding sleeve 32 to move.

As shown in fig. 7, as a preferred embodiment of the present invention, the telescopic assembly includes a connecting plate 23 sleeved on the second driving shaft 21, the connecting plate 23 is connected with a connecting sleeve 24 through two telescopic rods, the two telescopic rods are respectively located at two sides of the second driving shaft 21, one end of the connecting sleeve 24 away from the connecting plate 23 is connected with a foot rest 25, and the connecting sleeve 24 and the second driving shaft 21 are in threaded fit for driving the foot rest 25 to reciprocate along the second driving shaft 21.

In the embodiment of the present invention, the rotation of the second driving shaft 21 drives the connecting sleeve 24 to move, and the foot rest 25 can be pushed out from the lower portion of the chair seat 1 by the cooperation of the telescopic rod, so that the user can place both feet conveniently. In this embodiment, the flexible subassembly of an alternative can directly cancel second drive shaft 21, sets up an electric telescopic handle alone, realizes the control to foot support 25 through electric telescopic handle's flexible, reaches the flexible effect of control foot support 25.

As shown in fig. 5-6, as a preferred embodiment of the present invention, the massage mechanism comprises a third driving member 12 and a plurality of massage assemblies, the massage assemblies are connected to the output end of the third driving member 12 via a transmission assembly, and the transmission assembly drives the plurality of massage assemblies to reciprocate via the third driving member 12 to massage the back of the user. In this embodiment, the transmission assembly may be a chain wheel and chain mechanism, or a belt wheel and belt mechanism, for realizing simultaneous movement of multiple groups of massage assemblies. The third drive member 12 may be a small electric motor.

As shown in fig. 6, as a preferred embodiment of the present invention, the massage assembly includes a first rotating shaft 14 connected to the transmission assembly, the first rotating shaft 14 is installed inside the second installation groove 11 through two installation blocks, a push rod 16 is rotatably connected to the first rotating shaft 14, one end of the push rod 16 is connected to a sliding block 17 through a connecting rod, a massage head 18 for massage is installed on the sliding block 17, and the side wall of the chair back 2 is provided with guide holes 15, the number of which is matched with that of the sliding block 17, for enabling the sliding block 17 to drive the massage head 18 to reciprocate along the guide holes 15.

In the embodiment of the invention, the third driving member 12 drives the first rotating shaft 14 to rotate through the transmission assembly, the first rotating shaft 14 drives the push rod 16 to move, and the sliding block 17 is matched with the guide hole 15 to realize the reciprocating motion of the sliding block 17 along the limiting groove on the guide hole 15, so as to drive the massage head 18 to perform reciprocating knocking massage on the back of the user. As an alternative to the massage assembly, as shown in FIG. 9, the rotary disc 37 is rotated by the first rotary shaft 14, the rotary disc 37 drives the pushing rod 38 to move by the connecting rod 40, and the pushing rod 38 reciprocates by the guide block 39 arranged on the mounting plate 36, so as to realize reciprocating knocking massage to the back of the user.

As shown in fig. 1 and 10, as a preferred embodiment of the present invention, the placing mechanism includes two adjusting sleeves 8 sleeved on the base 3, a first rotating shaft 7 connected with the adjusting mechanism, a display mounting rack 9 for placing a display and a keyboard mounting rack 10 for placing a keyboard and a mouse, the adjusting sleeves 8 are respectively meshed with a long gear sleeved on the first rotating shaft 7 through a gear, the gears on the two adjusting sleeves 8 are helical gears, and the spiral directions of the two helical gears are opposite, two sections with opposite spiral directions are correspondingly arranged on the long gear on the first rotating shaft 7, and the display mounting bracket 9 and the keyboard mounting bracket 10 are respectively connected with the side wall of one adjusting sleeve 8, the display mounting frame 9 and the keyboard mounting frame 10 are respectively connected with the chair back 2 through a control rod, and two ends of the control rod are respectively connected with corresponding parts through a universal ball.

In the embodiment of the invention, the long gears on the first rotating shafts 7 respectively drive the two adjusting sleeves 8 to move, so as to drive the display mounting rack 9 and the keyboard mounting rack 10 to be opened towards two sides of the seat 1, so that a user can sit on the seat 1 and then reversely move the first rotating shafts 7, so that the display mounting rack 9 and the keyboard mounting rack 10 move to the front of the user. In another embodiment of this scheme, can be connected together display mounting bracket 9 and keyboard mounting bracket 10, drive its motion through an adjusting collar 8, and set up a truckle in its bottom, make it contact with the ground all the time and keep the stability of device, be connected the back of the chair with display mounting bracket 9 and keyboard mounting bracket 10 through control lever and universal ball complex mode simultaneously, when not disturbing opening and shutting of display mounting bracket 9 and keyboard mounting bracket 10, can drive display mounting bracket 9 and keyboard mounting bracket 10 simultaneous movement in 2 angle modulation's of the back of the chair, guarantee the back of the chair 2 all the time and keep the parallel with display mounting bracket 9 and keyboard mounting bracket 10 at angle modulation's in-process, reduce the harm that can be to user's eye.

As shown in fig. 1, as a preferred embodiment of the present invention, a heat dissipation assembly for cooling the interior of the first installation chamber 4 is connected to one side of the first installation chamber 4 close to the base 3, the heat dissipation assembly comprises a heat dissipation pipe 34 connected to the first installation chamber 4, and a fan 33 for dissipating heat is connected to the heat dissipation pipe 34, as an alternative, one end of the heat dissipation pipe 34 away from the first installation chamber 4 can be connected to the second installation groove 11.

In the embodiment of the invention, when in use, the main machine 5 is placed in the first installation cavity 4, the main machine 5 can generate heat when in use, the fan 33 can remove the heat generated by the main machine 5 from the main machine 5 through the radiating pipe 34, the radiating pipe 34 can be connected with the second installation groove 11 if needed, the heat in the first installation cavity 4 can be discharged into the second installation groove 11, and the temperature in the second installation groove 11 is increased, so that the use effect of the massage mechanism is improved.

As shown in fig. 8, as a preferred embodiment of the present invention, a placing plate 26 is connected to one end of the keyboard mounting bracket 10 away from the adjusting sleeve 8, a keyboard placing groove 27 for placing a keyboard, a mouse placing groove 29 for placing a mouse, and a wireless power converter 28 are formed on the placing plate 26, and a magnet plate is disposed in the mouse placing groove 29, and an iron sheet is inlaid at the bottom of the corresponding mouse to ensure that the mouse does not slide down.

In the embodiment of the present invention, the keyboard is disposed in the keyboard placing groove 27, the mouse is placed in the mouse placing groove 29, and the mouse cannot easily slide off the mouse placing groove 29 under the action of magnetic force, and an iron sheet can be embedded in the mouse placing groove 29, and a plurality of magnet sheets are embedded in the bottom of the mouse, so that the same effect can be achieved.

During the use, the user opens placement mechanism to both sides through adjustment mechanism before sitting seat support 1, sit and close placement mechanism behind seat support 1, make keyboard mouse and display all arrange user dead ahead in, the angle of the back of the chair 2 and seat support 1 is adjusted to a comfortable angle through adjustment mechanism, stretch out convenient to use person from seat support 1 lower part with the foot rest 25 and place the both legs simultaneously, the user lies on the device alright operate the computer, can massage user's back through massage mechanism simultaneously, and can drive mounting bracket 9 and keyboard mounting bracket 10 simultaneous movement when adjusting the angle of the back of the chair, guarantee the back of the chair 2 all the time and keep the parallel with display mounting bracket 9 and keyboard mounting bracket 10 at angle regulation's in-process, reduce the harm that can be to user's eye.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a multifunctional office chair, includes the seat support, sets up in the back of the chair and the foot support of seat support one side to and set up in the seat support and be close to the base of ground one side, its characterized in that still includes:

the massage mechanism is arranged in a second mounting groove formed in the chair back and can massage the back of a user in a reciprocating knocking mode;

the placing mechanism is arranged on the base and used for placing the keyboard, the mouse and the display; and

2. The multi-function office chair of claim 1, wherein the adjustment mechanism comprises a first drive member, further comprising:

the driving assembly is connected with the output end of the first driving piece and used for providing driving force for the movement of the chair back and the foot supports for placing the mechanism;

and the adjusting assembly is connected with the driving assembly and is used for adjusting the connection or disconnection of the driving assembly and the placing mechanism.

3. The multifunctional office chair of claim 2, wherein the driving assembly comprises a main driving shaft connected to the output end of the first driving member, the main driving shaft is connected to a second driving shaft and a third driving shaft through a pair of meshed bevel gears, the third driving shaft drives the annular rack on the lower portion of the chair back to move through a gear engaged with the third driving shaft, and the second driving shaft drives the foot rest to move through a set of telescopic assemblies.

4. The multifunctional office chair of claim 2, wherein the adjusting assembly comprises a second driving member and an adjusting sliding sleeve slidably mounted on the main driving shaft, the second driving member is connected with a rack through a gear, and one end of the rack away from the second driving member is connected with the adjusting sliding sleeve through an adjusting rod.

5. The multifunctional office chair of claim 3, wherein the telescopic assembly comprises a connecting plate sleeved on the second driving shaft, the connecting plate is connected with a connecting sleeve through a connecting piece, one end of the connecting sleeve, far away from the connecting plate, is connected with the foot rest, and the connecting sleeve is in threaded fit with the second driving shaft and is used for driving the foot rest to reciprocate along the second driving shaft.

6. The multifunctional office chair of claim 1, wherein the massage mechanism comprises a third driving member and a plurality of massage assemblies, the massage assemblies are connected to the output end of the third driving member through a transmission assembly, and the transmission assembly drives the plurality of massage assemblies to reciprocate through the third driving member to massage the back of the user.

7. The multifunctional office chair of claim 6, wherein the massage assembly comprises a first rotating shaft connected with the transmission assembly, the first rotating shaft is rotatably connected with a push rod, one end of the push rod is connected with a sliding block, a massage head for massage is mounted on the sliding block, and the sliding block slides back and forth along a guide hole formed in the side wall of the chair back.

8. The multifunctional office chair of claim 1, wherein the placing mechanism comprises two adjusting sleeves sleeved on the base, a first rotating shaft connected with the adjusting mechanism, a display mounting rack used for placing a display, and a keyboard mounting rack used for placing a keyboard mouse, the adjusting sleeves are respectively meshed with long gears sleeved on the first rotating shaft through gears, the display mounting rack and the keyboard mounting rack are respectively connected with the side wall of one adjusting sleeve, the display mounting rack and the keyboard mounting rack are respectively connected with the chair back through a control rod, and two ends of the control rod are respectively connected with corresponding components through a universal ball.

9. The multifunctional office chair of claim 8, wherein a placing plate is connected to one end of the keyboard mounting frame away from the adjusting sleeve, and a keyboard placing groove for placing a keyboard, a mouse placing groove for placing a mouse and a wireless power switch are formed on the placing plate.

10. The multifunctional office chair of claim 1, wherein a heat dissipation assembly for cooling the interior of the first installation cavity is connected to one side of the first installation cavity close to the base.