CN106539320B - Multifunctional integrated table and chair - Google Patents
Multifunctional integrated table and chair Download PDFInfo
- Publication number
- CN106539320B CN106539320B CN201611061283.6A CN201611061283A CN106539320B CN 106539320 B CN106539320 B CN 106539320B CN 201611061283 A CN201611061283 A CN 201611061283A CN 106539320 B CN106539320 B CN 106539320B
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- hinged
- connecting rod
- chair
- rod
- bottom plate
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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
- A47B39/00—School forms; Benches or forms combined with desks
- A47B39/06—Folding forms
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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
- A47B41/00—School desks or tables
- A47B41/02—Adjustable, inclinable, sliding or foldable desks tops
Abstract
The invention discloses a multifunctional integrated table and chair, which comprises a bottom plate, and a table top and a chair top which are arranged on the bottom plate, wherein the table top is connected with the bottom plate through a first link mechanism, the first link mechanism comprises an upper link and a lower link, the end parts of the upper link are mutually hinged, the top end of the upper link is hinged with the table top, the bottom end of the lower link is hinged with the bottom plate, a plurality of teeth are further arranged on the bottom surface of the table top, the upper link is hinged with one end of an adjusting bracket, and the other end of the adjusting bracket is abutted against different teeth to realize that the table top keeps different angles; the multifunctional desk has reasonable design, integrates functions of theoretical teaching and learning, various mechanical drawing teaching, various painting teaching and the like, enables one desk and chair to have multiple classroom use functions, and has a simple structure and convenient operation.
Description
Technical Field
The invention relates to the technical field of portable tables and chairs, in particular to a multifunctional integrated table and chair.
Background
With the increasing level of education, more classroom devices enter the classroom, and desks and chairs are layered endlessly. The existing desk and chair in the step classrooms, the common classrooms and the like have some defects and also have some problems, on one hand, the desk and chair in the classrooms are uniform in height and not adjustable, and for different people, the ergonomics cannot be met, and the step classrooms are more connected desk and chair, so that the desk and chair are more inconvenient; on the other hand, maintenance of these tables and chairs is complicated, and it is not enough for some special teaching environments (classroom interaction, outdoor teaching, etc.), and the movement of the tables and chairs is also laborious or immovable, and these drawbacks exist in different degrees in the existing tables and chairs, so it is very necessary to study a multifunctional integrated table and chair to make up for the above-mentioned drawbacks in the prior art.
Disclosure of Invention
In order to solve the problems, the invention provides a multifunctional integrated table and chair, which is reasonable in design, integrates functions of theoretical teaching and learning, various mechanical drawing teaching, various painting teaching and the like, enables one table and chair to have multiple classroom use functions at the same time, and is simple in structure and convenient to operate.
In order to achieve the above purpose, the invention provides a multifunctional integrated table and chair, which comprises a bottom plate, and a table top and a chair top which are arranged on the bottom plate, wherein the table top is connected with the bottom plate through a first connecting rod mechanism, the first connecting rod mechanism comprises an upper connecting rod and a lower connecting rod, the end parts of the upper connecting rod are mutually hinged, the top end of the upper connecting rod is hinged with the table top, the bottom end of the lower connecting rod is hinged with the bottom plate, a plurality of teeth are further arranged on the bottom surface of the table top, one end of an adjusting bracket is hinged on the upper connecting rod, and the other end of the adjusting bracket is abutted against different teeth to realize that the table top keeps different angles;
the support structure comprises a first support rod and a second support rod, the middle parts of the first support rod and the second support rod are mutually hinged, the bottom ends of the first support rod and the bottom plate are hinged, the bottom ends of the second support rod are hinged on the sliding block, in the two support rods, the top end of one support rod is hinged on the bottom surface of the chair panel, and the top end of the other support rod is in contact with the bottom surface of the chair panel;
the device also comprises a transmission mechanism for synchronizing the actions of the table top plate and the chair top plate, wherein the transmission mechanism comprises a push rod with one end hinged on the lower connecting rod, the other end of the push rod is hinged with one end of the transmission rod, and the other end of the transmission rod is fixed on the sliding block.
The transmission rod is provided with a locking groove, the bottom plate is provided with a plurality of locking pins, and the locking pins are arranged on the movement track of the locking groove.
The push rod is hinged with the transmission rod through a pin shaft, and a rotatable roller is sleeved on the pin shaft.
The bottom plate is provided with a sliding groove, the sliding block and the rolling wheel are arranged in the sliding groove, and the heights of the two ends of the transmission rod are the same.
The bottom ends of the first support rods and the second support rods are located at the same height.
An anti-slip layer is arranged on the bottom surface of the bottom plate, and the anti-slip layer is a rubber pad.
The upper connecting rod is hinged with the lower connecting rod through a ratchet rotating shaft mechanism, the ratchet rotating shaft mechanism comprises a bolt column, a rotating disc sleeved on the bolt column and a fixed disc fixed on the bolt column, ratchet teeth used for mutually matching and locking are arranged on opposite surfaces of the rotating disc and the fixed disc, a spring sleeved on the bolt column is further arranged between the two rotating discs, and the position of a nut screwed on the threaded end of the bolt column is adjusted by the bolt column, so that engagement and separation of the rotating disc and the fixed disc are adjusted; the upper connecting rod and the lower connecting rod are respectively connected with one of the rotating disc and the fixed disc.
The first connecting rod mechanism, the supporting structure and the transmission mechanism are symmetrically arranged.
The first connecting rod mechanism is connected to the rear end of the bottom surface of the table top plate, and the teeth are arranged at the front end of the bottom surface of the table top plate.
The locking device for locking the tabletop plate is arranged on the bottom plate, one end of the locking device is hinged to the side face of the bottom plate, and the other end of the locking device is provided with an opening lock catch which is matched and locked with a short pin shaft arranged on the side face of the tabletop plate.
The locking devices are at least two and symmetrically arranged at two sides of the tabletop plate.
Compared with the prior art, the multifunctional desk has the advantages of simple and compact structure, diversified functions, convenient and flexible use, stretching and folding, strong practicability, realization of synchronous lifting of the desk board and the chair panel through reasonable structural design of the first connecting rod mechanism, the supporting structure and the transmission mechanism, realization of fixing of different angles of the desk board through the cooperation of the adjusting bracket and teeth with different distances, capability of meeting the requirements of various teaching modes on different inclination angles of the desk board, integration of theoretical teaching, various mechanical drawing teaching and various painting teaching functions, and realization of multiple classroom use functions of one desk and chair at the same time, and simple structure; in addition, the invention adjusts the conditions according with the human engineering according with different human bodies, thereby developing good learning habit and being beneficial to the healthy growth of the human body. But also can assist in correcting students with bad learning habits, correcting sitting postures and the like.
Further, a locking groove is formed in the transmission rod, a plurality of locking pins are arranged on the bottom plate, and the locking pins are arranged on the movement track of the locking groove, so that locking of the transmission mechanism is realized, and the transmission mechanism can be kept in a proper state.
Further, the sliding block and the idler wheels are arranged in the sliding groove, so that the sliding block and the idler wheels have more stable movement tracks, stability is improved, the heights of the two ends of the transmission rod are the same, and the transmission performance is more stable.
Further, the reasonable structural design of the ratchet rotating shaft mechanism facilitates adjustment and locking of the first connecting rod mechanism, and the operation is simple and convenient.
The multifunctional integrated mechanical desk and chair can be adjusted according to the current required use position of a user and the angle of the desk top, is simple in adjustment and convenient to operate, is economical in material use, simple in structure, greatly reduced in placement space, convenient to place, economical and practical, low in manufacturing cost, capable of being added to most schools, practical in multifunctional teaching and multifunctional usability, even applicable to occasions such as offices, and the like, and also has the advantages that if the multifunctional integrated mechanical desk and chair is produced in a large scale, the cost is further reduced when the multifunctional integrated mechanical desk and chair is applied to the fields such as teaching and offices, the cost in the transportation and carrying process is low, and the multifunctional integrated mechanical desk and chair is suitable for popularization, so that if the multifunctional integrated mechanical desk and chair meets different ergonomics, is movable, and convenient to learn, draw and the like, and meanwhile, the defects of the existing desk and chair can be overcome from a great extent through the multifunctional integrated design thought.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention in its deployed state;
FIG. 2 is a schematic view of the table top in a theoretical teaching state;
FIG. 3 is a schematic view of the table top in a drawing teaching state;
FIG. 4 is a schematic view of the table top in a painting teaching state;
FIG. 5 is a schematic view of the ratchet spindle mechanism;
fig. 6 is a schematic view of the engaged state of the ratchet spindle mechanism.
Fig. 7 is a schematic view of the overall structure of the folded contracted state of the present invention.
In the accompanying drawings: the novel chair comprises a table top plate, a first connecting rod mechanism, a first connecting rod 111, a lower connecting rod 112, a regulating bracket 12, a tooth 13, a non-slip layer 14, a tooth rotating shaft mechanism 15, a bolt pillar 151, a nut 152, a spring 153, a rotating disc 155, a fixed disc 156, a ratchet 157, a locking device 16, a transmission mechanism 2, a push rod 21, a transmission rod 22, a slide block 23, a locking groove 24, a chair top plate 3, a supporting structure 31, a first supporting rod 311 and a second supporting rod 312.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
As shown in fig. 1, the invention comprises a bottom plate 8, a table top plate 1 and a chair top plate 3 which are arranged on the bottom plate 8, an anti-slip layer 14 is arranged on the bottom surface of the bottom plate 8, the anti-slip layer 14 is a rubber pad, wherein the table top plate 1 is connected with the bottom plate 8 through a first connecting rod mechanism 11, the first connecting rod mechanism 11 comprises an upper connecting rod 111 and a lower connecting rod 112, the end parts of the upper connecting rod 111 are mutually hinged, the top end of the upper connecting rod 111 is hinged with the table top plate 1, the bottom end of the lower connecting rod 112 is hinged with the bottom plate 8, a plurality of teeth 13 are also arranged on the bottom surface of the table top plate 1, one end of an adjusting bracket 12 is hinged on the upper connecting rod 111, and the other end of the adjusting bracket 12 is abutted against different teeth 13 to realize different angles of the table top plate 1; as shown in fig. 1, one end of the table top 1 near the user is a front end, and as can be seen from the figure, the first link mechanism 11 is connected to the rear end of the bottom surface of the table top 1, and the teeth 13 are disposed at the front end of the bottom surface of the table top 1.
As shown in fig. 1, the support structure 31 is connected under the chair panel 3, the support structure 31 comprises a first support rod 311 and a second support rod 312, the middle parts of the first support rod 311 are hinged with each other, the bottom end of the first support rod 311 is hinged with the bottom plate 8, the bottom end of the second support rod 312 is hinged on the sliding block 23, one of the two support rods is hinged with the bottom surface of the chair panel 21, and the top end of the other support rod is supported and contacted with the bottom surface of the chair panel 3; only one of the two support rods is hinged and fixed with the chair panel 3, so that the lifting function of the chair panel 3 is realized; as a preferred embodiment of the present invention, the top ends of the first support rods 311 are hinged to the bottom surface of the seat panel 21, and the top ends of the second support rods 312 are supported to contact the bottom surface of the seat panel 3, and meanwhile, as can be seen from fig. 1, the contact between the bottom surface of the seat panel 3 and the top ends of the second support rods 312 is provided with a groove, so that the structural design can better realize the cooperation and fixation between the second support rods 312 and the seat panel 3, and has a better supporting effect.
As shown in fig. 1, the invention further comprises a transmission mechanism 2 for synchronizing the actions of the table top plate 1 and the chair top plate 3, wherein the transmission mechanism 2 comprises a push rod 21 with one end hinged on a lower connecting rod 112, the other end of the push rod 21 is hinged with one end of a transmission rod 22, the push rod 21 is hinged with the transmission rod 22 through a pin roll, a rotatable roller 25 is sleeved on the pin roll, and the other end of the transmission rod 22 is fixed on a sliding block 23; the bottom plate 8 is also provided with a chute, the sliding blocks 23 and the rollers 25 are arranged in the chute, the heights of the two ends of the transmission rod 22 are the same, the transmission rod 22 is provided with a locking groove 24, the bottom plate 8 is provided with a plurality of locking pins, the locking pins are arranged on the movement track of the locking groove, and the locking pins are inserted into the locking groove 24 to realize the locking of the transmission mechanism 2, so that the table top plate 1 and the chair top plate 3 are fixed at the current adjusted position; in other embodiments of the present invention, the slider 23 may be replaced by a roller, which can also achieve the technical effects of the present invention.
In the preferred embodiment of the present invention, the bottom ends of the first support rod 311 and the second support rod 312 are at the same height, so that the mechanical movement is smoother in the process of receiving the driving force of the driving mechanism 2 for adjustment, and meanwhile, the first link mechanism 11, the support structure 31 and the driving mechanism 22 are all symmetrically arranged, so that the table top board 1 and the chair panel 3 can be supported more stably, and the mechanical structure is more stable.
As shown in fig. 1, 5 and 6, the upper link 111 and the lower link 112 are hinged through a ratchet rotating shaft mechanism 15, the ratchet rotating shaft mechanism 15 comprises a bolt column 151, a rotating disc 155 sleeved on the bolt column 151 and a fixed disc 156 fixed on the bolt column 151, ratchet teeth 157 for mutually matching and locking are arranged on opposite surfaces of the rotating disc 155 and the fixed disc 156, a spring 153 sleeved on the bolt column 151 is further arranged between the two rotating discs, and the bolt column 151 adjusts the engagement and separation of the rotating disc 155 and the fixed disc 156 by adjusting the position of a nut 152 screwed on the threaded end of the bolt column 151; the upper link 111 and the lower link 112 are respectively connected to one of the rotating disc 155 and the fixed disc 156; in the preferred embodiment of the present invention, the rotating disc 155 is connected with the upper link 111, the fixed disc 156 is connected with the lower link 112, during the use process, the angle and the position of the table top 1 can be adjusted by the relative rotation between the upper link 111 and the lower link 112, the multi-angle adjustment of the table top 1 can be realized by matching with the adjustment bracket 12 and the fixation of the teeth 13, and after the table top 1 is adjusted to a proper angle, the ratchet rotating shaft mechanism 15 can be realized by tightening the bolt column 151 and the nut 152 to fixedly lock the relative position of the upper link 111 and the lower link 112, so that the operation is simple and convenient, and the fixing effect is good.
As shown in fig. 7, the bottom plate 8 is provided with a locking device 16 for locking the table top 1, one end of the locking device 16 is hinged to the side surface of the bottom plate 8, the other end is provided with an opening lock catch for being matched and locked with a short pin shaft arranged on the side surface of the table top 1, and the locking device 16 is at least provided with two locking devices and symmetrically arranged on two sides of the table top 1.
As shown in fig. 2, 3 and 4, the table top 1 can freely rotate within a certain range by adjusting the cooperation between the bracket 12 and the teeth 13, and a certain inclined support is formed by adjusting the angle of the table top 1, so that the purpose that the table top 1 can be suitable for various teaching application scenes is achieved.
The unfolding process of the invention is as follows, referring to fig. 1, firstly, the locking of the table top board is released, the table top board 1 is lifted, and at the same time, the table top board 1 is lifted, the driving mechanism 2 transmits force to the supporting structure 31 under the chair top board 3, the chair 21 is lifted at the same time, after lifting to a proper height, the current position is locked by inserting the locking pin into the locking groove 24, the position of the first link mechanism 11 is locked by the ratchet rotating shaft mechanism 15, then the adjusting bracket 12 is used for supporting the teeth 13 which are propped to a proper distance, and the fixing of the angle of the table top board 1 is completed, wherein the fixing of the angle of the table top board 1 comprises but is not limited to three states:
in the theoretical teaching state shown in fig. 2, after the desktop 1 is lifted, the upper connecting rod 111 and the lower connecting rod 112 are fixed through the ratchet rotating shaft mechanism 15, and then the desktop with the included angle of zero degree can be realized through the cooperation of the adjusting bracket 12 and the teeth 13.
In the drawing teaching state shown in fig. 3, after the tabletop plate 1 is lifted, the upper connecting rod 111 and the lower connecting rod 112 are fixed through the ratchet rotating shaft mechanism 15, and then the front end of the tabletop plate 1 is inclined downwards through the cooperation of the adjusting bracket 12 and the teeth 13, and the included angle between the front end and the horizontal line is 5-10 degrees.
In the drawing teaching state shown in fig. 4, after the table top 1 is lifted, the angle of the upper link 111 is adjusted, the upper link 111 and the lower link 112 are fixed by the ratchet rotating shaft mechanism 15, and the table top 1 is directly contacted with the link 3 without being supported by the adjusting bracket 12.
As shown in fig. 7, in the folding and shrinking process of the invention, the locking pin is separated from the locking groove 24, then the ratchet rotating shaft mechanism 15 is unlocked, the adjusting bracket 12 of the table top 1 is put down, the table top is naturally put down, and then the locking device 16 is started to lock the relative positions of the table top 1 and the bottom plate, so that the table top can be folded or carried.
According to the invention, functions of theoretical teaching learning, various mechanical drawing teaching, various painting teaching and the like are integrated into a whole, so that one desk and chair simultaneously has multiple classroom use functions, multiple use requirements of the existing teaching can be met, and according to different human body adjustment, the conditions conforming to the human engineering of the user are met, good learning habit is developed, and the healthy growth of the user is facilitated; the table top can be adjusted according to the current required use position of a user and the angle of the table top, and the table top is simple to adjust and convenient to operate; the invention has the advantages of saving materials, simple structure, greatly reducing the placing space, being convenient to place, being capable of being folded and retracted after being used, effectively improving the using efficiency of the space, being an economical design, simultaneously, the invention has simple structure and low manufacturing cost, can be added for most schools, the multifunctional teaching and multifunctional usability of the multifunctional teaching and multifunctional usability are practical, can be even applied to occasions such as offices, and the like, also has superiority, the folding and transporting device is applied to the fields of teaching, office and the like in batches, the cost is further reduced, and the folding and transporting device is convenient to popularize and apply, and can be used for transporting after being folded.
Claims (3)
1. The multifunctional integrated table and chair is characterized by comprising a bottom plate (8), and a table top plate (1) and a chair top plate (3) which are arranged on the bottom plate (8), wherein the table top plate (1) is connected with the bottom plate (8) through a first connecting rod mechanism (11), the first connecting rod mechanism (11) comprises an upper connecting rod (111) and a lower connecting rod (112) which are hinged at the end parts, the top end of the upper connecting rod (111) is hinged with the table top plate (1), the bottom end of the lower connecting rod (112) is hinged with the bottom plate (8), a plurality of teeth (13) are further arranged on the bottom surface of the table top plate (1), one end of an adjusting bracket (12) is hinged on the upper connecting rod (111), and the other end of the adjusting bracket (12) is in different angles through abutting against different teeth (13); the first connecting rod mechanism (11) is connected to the rear end of the bottom surface of the tabletop plate (1), and the teeth (13) are arranged at the front end of the bottom surface of the tabletop plate (1);
the upper connecting rod (111) and the lower connecting rod (112) are hinged through a ratchet rotating shaft mechanism (15), the ratchet rotating shaft mechanism (15) comprises a bolt column (151), a rotating disc (155) sleeved on the bolt column (151) and a fixed disc (156) fixed on the bolt column (151), ratchet teeth (157) used for mutually matching and locking are arranged on opposite surfaces of the rotating disc (155) and the fixed disc (156), a spring (153) sleeved on the bolt column (151) is further arranged between the two rotating discs, and the position of a screw cap (152) screwed on the threaded end of the bolt column is adjusted by the bolt column (151), so that engagement and separation of the rotating disc (155) and the fixed disc (156) are adjusted; the upper connecting rod (111) and the lower connecting rod (112) are respectively connected with one of the rotating disc (155) and the fixed disc (156);
the lower part of the chair panel (3) is connected with a supporting structure (31), the supporting structure (31) comprises a first supporting rod (311) and a second supporting rod (312) with the middle parts mutually hinged, the bottom end of the first supporting rod (311) is hinged with the bottom plate (8), the bottom end of the second supporting rod (312) is hinged on the sliding block (23), one supporting rod is hinged at the bottom surface of the chair panel (3), and the other supporting rod is hinged at the top end of the supporting rod and is in contact with the bottom surface of the chair panel (3);
the chair also comprises a transmission mechanism (2) for synchronizing the actions of the table board (1) and the chair panel (3), wherein the transmission mechanism (2) comprises a push rod (21) with one end hinged on a lower connecting rod (112), the other end of the push rod (21) is hinged with one end of a transmission rod (22), and the other end of the transmission rod (22) is fixed on a sliding block (23);
a locking groove is formed in the transmission rod (22), a plurality of locking pins are arranged on the bottom plate (8), and the locking pins are arranged on the movement track of the locking groove;
the push rod (21) is hinged with the transmission rod (22) through a pin shaft, and a rotatable roller (25) is sleeved on the pin shaft;
the bottom plate (8) is provided with a chute, the sliding block (23) and the roller (25) are arranged in the chute, and the heights of the two ends of the transmission rod (22) are the same; an anti-slip layer (14) is arranged on the bottom surface of the bottom plate (8), and the anti-slip layer (14) is a rubber pad; the locking device (16) for locking the desktop plate (1) is arranged on the bottom plate (8), one end of the locking device (16) is hinged to the side face of the bottom plate (8), and the other end of the locking device is provided with an opening lock catch which is matched and locked with a short pin shaft arranged on the side face of the desktop plate (1).
2. The multifunctional integrated table and chair according to claim 1, wherein the bottom end of the first supporting rod (311) and the bottom end of the second supporting rod (312) are at the same height.
3. A multifunctional integrated table and chair according to claim 1, characterized in that the first link mechanism (11), the support structure (31) and the transmission mechanism (22) are all two sets of symmetrical arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611061283.6A CN106539320B (en) | 2016-11-25 | 2016-11-25 | Multifunctional integrated table and chair |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611061283.6A CN106539320B (en) | 2016-11-25 | 2016-11-25 | Multifunctional integrated table and chair |
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| Publication Number | Publication Date |
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| CN106539320A CN106539320A (en) | 2017-03-29 |
| CN106539320B true CN106539320B (en) | 2023-06-02 |
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| CN201611061283.6A Active CN106539320B (en) | 2016-11-25 | 2016-11-25 | Multifunctional integrated table and chair |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107336186A (en) * | 2017-07-26 | 2017-11-10 | 浙江省长兴丝绸有限公司 | A kind of tricot machine drive axle box removes and installs aid |
| CN108685336B (en) * | 2018-05-10 | 2019-12-20 | 苏州睿澎诚科技有限公司 | Learning chair |
| CN111713854A (en) * | 2020-06-29 | 2020-09-29 | 陈振江 | Integrated table and chair convenient to fold and method |
| CN111820589B (en) * | 2020-07-22 | 2022-04-26 | 北京东方万隆家俱有限公司 | Office table and chair |
| CN112273853A (en) * | 2020-11-05 | 2021-01-29 | 杭州心尧贸易有限公司 | Computer storage table for multimedia classroom |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2080345U (en) * | 1990-12-14 | 1991-07-10 | 蒋彦广 | Child's foldable height-adjustable table and chair for studying |
| CN2353232Y (en) * | 1998-12-08 | 1999-12-15 | 王同玉 | Multifunction lifting desk for learning |
| TW428449U (en) * | 2000-01-20 | 2001-04-01 | Tsai Tzung Lin | Improvement of seat adjustment mechanism for integral classroom table and chair |
| US7314248B2 (en) * | 2005-03-03 | 2008-01-01 | Robert Alan Mabon | Portable workstation |
| CN100496335C (en) * | 2006-10-26 | 2009-06-10 | 河北科技大学 | Portable folding table and chair for campus |
| CN101617878B (en) * | 2009-07-20 | 2011-04-06 | 余德清 | Rotating base of hanging umbrella |
| CN202091300U (en) * | 2010-12-30 | 2011-12-28 | 北京奇耐特长城座椅有限公司 | Rapid installation fastener for movable seats |
| TWM479188U (en) * | 2013-10-02 | 2014-06-01 | King Tony Tools Co Ltd | Driving head structure improvement of ratchet wrench |
| CN203897754U (en) * | 2014-05-07 | 2014-10-29 | 西安建筑科技大学华清学院 | Liftable desk and chair combination |
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