CN113796652B - Sliding keyboard for computer science and technology teaching - Google Patents

Sliding keyboard for computer science and technology teaching Download PDF

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Publication number
CN113796652B
CN113796652B CN202111217052.0A CN202111217052A CN113796652B CN 113796652 B CN113796652 B CN 113796652B CN 202111217052 A CN202111217052 A CN 202111217052A CN 113796652 B CN113796652 B CN 113796652B
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keyboard
plate
teaching
desk
sliding
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CN202111217052.0A
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CN113796652A (en
Inventor
裴文财
董立忠
李洪刚
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Yingkou Institute of Technology
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Yingkou Institute of Technology
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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
    • A47B21/00—Tables or desks for office equipment, e.g. typewriters, keyboards
    • A47B21/02—Tables or desks for office equipment, e.g. typewriters, keyboards with vertical adjustable parts
    • 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
    • A47B1/00—Extensible tables
    • A47B1/08—Extensible tables with extensible frames or with additional legs
    • 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
    • A47B13/00—Details of tables or desks
    • A47B13/08—Table tops; Rims therefor
    • A47B13/081—Movable, extending, sliding table tops
    • 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
    • A47B21/00—Tables or desks for office equipment, e.g. typewriters, keyboards
    • A47B21/03—Tables or desks for office equipment, e.g. typewriters, keyboards with substantially horizontally extensible or adjustable parts other than drawers, e.g. leaves
    • 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
    • A47B21/00—Tables or desks for office equipment, e.g. typewriters, keyboards
    • A47B21/03—Tables or desks for office equipment, e.g. typewriters, keyboards with substantially horizontally extensible or adjustable parts other than drawers, e.g. leaves
    • A47B21/0314—Platforms for supporting office equipment
    • A47B2021/0321—Keyboard supports

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Abstract

The invention discloses a sliding keyboard for computer science and technology teaching, which relates to the technical field of teaching equipment. According to the invention, the keyboard seat is controlled to move downwards to the initial position through the electric lifting cylinder, and according to the transmission relation, when the keyboard seat and the teaching keyboard on the upper side of the keyboard seat are accommodated in the desk, the cover plates on two sides of the desk move inwards to cover the upper side of the desk again.

Description

Sliding keyboard for computer science and technology teaching
Technical Field
The invention relates to the technical field of teaching equipment, in particular to a sliding keyboard for computer science and technology teaching.
Background
A keyboard is a command and data input device used to operate a computer device and also refers to a set of function keys (e.g., typewriter, computer keyboard) arranged to operate a machine or device through the system. The keyboard is the most common and main input device, and English letters, chinese characters, numbers, punctuations and the like can be input into the computer through the keyboard, so that commands, data input and the like are sent to the computer.
At present, the computer keyboard is used when the multimedia classroom of many colleges and universities carries out computer technical teaching, the traditional computer keyboard is mostly exposed outside, dust and stain are very easily contaminated, and then the use of influencing the keyboard is experienced, and the current computer keyboard structure is fixed, does not have angle modulation function, influences the use of teaching personnel, and is not equipped with the protection architecture of keyboard, leads to the problem that the keyboard is bumped bad etc. by the desktop article easily
Through retrieval, the Chinese patent technology provides a sliding keyboard (CN 210136482U) for computer science and technology teaching, and the patent scheme can avoid the keyboard from being infected with dust and can fix the keyboard, but the patent scheme is complex in structure and complex to operate, and the position and the angle of the keyboard cannot be adjusted. Therefore, the present invention provides a sliding keyboard for computer science and technology teaching to solve the above problems in the background art.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a sliding keyboard for computer science and technology teaching.
In order to achieve the purpose, the invention adopts the following technical scheme:
a sliding keyboard for computer science and technology teaching comprises a desk and a teaching keyboard, wherein cover plates are arranged on the left side and the right side of the upper end of the desk, a keyboard seat positioned in the desk is arranged on the lower side of each cover plate, a sliding seat is fixedly installed on each keyboard seat, and the teaching keyboard is positioned on the upper side of each sliding seat;
the left side and the right side of the front side and the rear side of the keyboard seat are both rotatably connected with a second transmission plate, the other end of the second transmission plate is rotatably connected with a first transmission plate, the outer side of the other end of the first transmission plate is rotatably connected with a third transmission plate, the other end of the third transmission plate is rotatably connected with a cover plate corresponding to one side, and a third transmission plate is arranged between the outer ends of the front side and the rear side of the cover plate and the desk;
the inner side of the other end of each of the two transmission plates at the rear side is rotatably connected with a sector toothed plate, a double-sided rack which is meshed with each other is arranged between the two sector toothed plates, and an air cylinder fixed in the desk is arranged at the front side of the double-sided rack;
an inflation wrist support is arranged on the front side of the surface of the keyboard seat, the inflation wrist support is a semi-cylindrical air bag, and an air pipe is connected between the inflation wrist support and the air cylinder;
a sliding plate is arranged on the lower side of the teaching keyboard, the sliding plate slides on the sliding seat back and forth, rotating columns are fixed at the left end and the right end of the front side of the sliding plate, and the left end and the right end of the teaching keyboard are rotatably connected to the rotating columns;
the rear side of the sliding plate is rotatably connected with a rotating rod, the left end and the right end of the rotating rod are fixedly connected with a fourth transmission plate, the other end of the fourth transmission plate is rotatably connected with a connecting block, and the connecting block slides forwards and backwards on the bottom surface of the teaching keyboard;
a pinion fixed at the outer end of the rotating rod is arranged on the outer side of the four transmission plates, a large gear meshed with the pinion is arranged on the front side of the pinion, the two large gears are rotatably connected to the left side and the right side of the sliding plate, and tooth grooves corresponding to the large gears are formed in the inner parts of the two sides of the sliding seat;
the outer ends of the two rotary columns are fixedly provided with ratchets, the upper sides of the ratchets are provided with clamping strip blocks corresponding to the ratchets, the clamping strip blocks are rotatably connected to two sides of the teaching keyboard, and torsion springs are arranged at the switching positions of the clamping strip blocks;
the keyboard base slides up and down in the desk, electric lifting cylinders are mounted on the left and right sides in the desk, and the upper ends of the electric lifting cylinders are fixedly connected with the bottom surface of the keyboard base;
the double-sided rack is characterized in that a connecting plate is fixedly connected to the front side of the double-sided rack, a piston rod is fixedly connected to the upper side of the connecting plate, and a piston located inside the inflator is fixedly connected to the upper end of the piston rod.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the keyboard seat is lifted to the top side of the desk through the electric lifting cylinder, the keyboard seat is controlled to stop lifting, the cover plates on the two sides are moved to the left side and the right side of the keyboard seat at the moment, and the unfolded desk enables the cover plates on the two sides and the middle keyboard seat to form a new teaching desktop, so that the area of the desk is increased, and the teaching of a teacher is facilitated;
2. the piston rod on the upper side of the desk is moved upwards through the upwards moving double-sided rack and the connecting plate, the piston rod moves towards the inside of the air cylinder in the desk, so that air is extruded and is sent into the inflatable wrist supporting air bag on the surface of the keyboard seat through the air pipe, the air bag is expanded, the expanded air bag can be used as a keyboard wrist support, and the burden on the wrist of a teacher who uses the keyboard frequently can be relieved;
3. according to the invention, the keyboard seat is controlled to move downwards to the initial position through the electric lifting cylinder, and according to the transmission relation, when the keyboard seat and the teaching keyboard on the upper side of the keyboard seat are accommodated in the desk, the cover plates on two sides of the desk move inwards to cover the upper side of the desk again;
4. according to the invention, the ratchet wheels on the two sides of the sliding plate lose the rotation limitation of the clamping bar blocks by shifting the clamping bar blocks on the two sides of the keyboard, and then the sliding plate is slowly pulled back, so that the keyboard can be reset, the pitch angle of the teaching keyboard is changed and adjusted by pushing the keyboard back and forth, the operation is convenient, and the computer teaching by a teacher is facilitated.
Drawings
Fig. 1 is a schematic structural view of a sliding keyboard for teaching computer science and technology according to the present invention;
fig. 2 is a schematic view of an expanded structure of a sliding keyboard for teaching computer science and technology according to the present invention;
fig. 3 is a first schematic view of a connection structure of a keyboard seat and a cover plate in a sliding keyboard for teaching computer science and technology according to the present invention;
fig. 4 is a schematic view of a connection structure between a keyboard base and a cover plate of the sliding keyboard for teaching computer science and technology according to the present invention;
fig. 5 is a schematic view of a connection structure of a sector toothed plate in a sliding keyboard for teaching computer science and technology according to the present invention;
FIG. 6 is a schematic structural diagram of a sliding keyboard for teaching in computer science and technology according to the present invention after the keyboard has been moved;
FIG. 7 is a schematic bottom view of a sliding keyboard for teaching computer science and technology according to the present invention;
fig. 8 is a schematic side view of a keyboard and a slider in a sliding keyboard for teaching computer science and technology according to the present invention.
In the figure: 1. a desk; 2. a keyboard base; 3. a cover plate; 4. an electric lifting cylinder; 5. a slide base; 6. a teaching keyboard; 7. a sector toothed plate; 8. a piston rod; 9. a first transmission plate; 10. a second transmission plate; 11. a third transmission plate; 12. a double-sided rack; 13. an air cylinder; 14. an air pipe; 15. a connecting plate; 16. an inflatable wrist support; 17. a rotating rod; 18. a fourth transmission plate; 19. connecting blocks; 20. a pinion gear; 21. a bull gear; 22. turning the column; 23. a ratchet wheel; 24. a card bar block; 25. a slide plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, a sliding keyboard for computer science and technology teaching comprises a desk 1 and a teaching keyboard 6, and is characterized in that cover plates 3 are arranged on the left and right sides of the upper end of the desk 1, a keyboard base 2 located in the desk 1 is arranged on the lower side of each cover plate 3, the keyboard bases 2 slide up and down in the desk 1, electric lifting cylinders 4 are mounted on the left and right sides of the inside of the desk 1, the upper ends of the electric lifting cylinders 4 are fixedly connected with the bottom surface of the keyboard base 2, a sliding base 5 is fixedly mounted on each keyboard base 2, and the teaching keyboard 6 is located on the upper side of each sliding base 5;
further, the front side and the rear side of the keyboard seat 2 are both rotatably connected with a second transmission plate 10, the other end of the second transmission plate 10 is rotatably connected with a first transmission plate 9, the outer side of the other end of the first transmission plate 9 is rotatably connected with a third transmission plate 11, the other end of the third transmission plate 11 is rotatably connected with the cover plate 3 corresponding to one side, and the third transmission plates 11 are arranged between the outer ends of the front side and the rear side of the cover plate 3 and the desk 1;
furthermore, the inner sides of the other ends of the two first transmission plates 9 on the rear side are rotatably connected with sector toothed plates 7, a double-sided rack 12 which is meshed with each other is arranged between the two sector toothed plates 7, an inflatable wrist support 16 is arranged on the front side of the surface of the keyboard base 2, the inflatable wrist support 16 is a semi-cylindrical air bag, an air pipe 14 is connected between the inflatable wrist support 16 and the air cylinder 13, an air cylinder 13 which is fixed in the desk 1 is arranged on the front side of the double-sided rack 12, an inflatable wrist support 16 is arranged on the front side of the surface of the keyboard base 2, the inflatable wrist support 16 is a semi-cylindrical air bag, and the air pipe 14 is connected between the inflatable wrist support 16 and the air cylinder 13 until the keyboard base 2 is lifted to the top side of the desk 1 by the electric lifting air cylinder 4 to control the keyboard base to stop lifting, and the cover plates 3 on the two sides are moved to the left side and the right side of the keyboard base 2 at the moment, so that the unfolded desk 1 enables the cover plates 3 on the two sides and the middle keyboard base 2 to form a new teaching desktop, thereby increasing the area of the desk 1 and being more beneficial for teaching of a teacher;
furthermore, when the keyboard base 2 is lifted, the double-sided rack 12 positioned between the two fan-shaped toothed plates 7 on one side is driven to move upwards, the upwards-moving double-sided rack 12 drives the piston rod 8 on the upper side to move upwards through the connecting plate 15, the piston rod 8 moves towards the inner part of the air cylinder 13 in the desk 1, so that air is extruded and is sent into the air bag of the inflatable wrist support 16 on the surface of the keyboard base 2 through the air pipe 14, the air bag is inflated, the inflated air bag can be used as a keyboard wrist support, the burden on the wrist caused by frequent use of the keyboard by a teacher can be relieved, when the teaching keyboard 6 is not needed to be used, the keyboard base 2 is controlled to move downwards to the initial position through the electric lifting air cylinder 4, according to the transmission relation, when the keyboard base 2 and the teaching keyboard 6 on the upper side of the keyboard base are stored in the desk 1, the cover plates 3 on the two sides of the desk 1 move inwards, the upper side of the desk 1 is covered again, and the structure can not only play a role in protecting the teaching keyboard 6 on the keyboard base 2, but also can be prevented from being exposed outside for a long time, so that dust is caused;
further, referring to fig. 6-8, a sliding plate 25 is arranged on the lower side of the teaching keyboard 6, the sliding plate 25 slides back and forth on the sliding base 5, rotary columns 22 are fixed at the left and right ends of the front side of the sliding plate 25, the left and right ends of the teaching keyboard 6 are rotatably connected to the rotary columns 22, a rotary rod 17 is rotatably connected to the rear side of the sliding plate 25, four transmission plates 18 are fixedly connected to the left and right ends of the rotary rod 17, a connecting block 19 is rotatably connected to the other ends of the four transmission plates 18, the connecting block 19 slides back and forth on the bottom surface of the teaching keyboard 6, a small gear 20 fixed to the outer end of the rotary rod 17 is arranged on the outer side of the four transmission plates 18, a large gear 21 meshed with the small gear 20 is arranged on the front side of the small gear 20, the two large gears 21 are rotatably connected to the left and right sides of the sliding plate 25, tooth grooves corresponding to the large gears 21 are formed in the two sides of the sliding base 5, ratchet wheels 23 are fixedly installed on the outer ends of the two rotary columns 22, a clamping bar block 24 corresponding to the ratchet wheel 23 is arranged on the upper side of the ratchet wheel, the clamping bar block 24 is rotatably connected to the two sides of the teaching keyboard 6, and a torsion spring is arranged at the position of the clamping block 24;
furthermore, when the teaching keyboard 6 is used and the pitch angle of the teaching keyboard 6 on the slide carriage 5 needs to be adjusted, the teaching keyboard 6 sliding on the slide carriage 5 through the sliding plate 25 is directly pushed backwards, when the sliding plate 25 translates forwards, the gearwheel 21 transferred on both sides of the sliding plate is meshed with the correspondingly arranged tooth grooves on both sides of the slide carriage 5, so that the gearwheel 21 rotates, the gearwheel 21 then drives the pinion 20 meshed on the front side to rotate, the rotating rod 17 between the pinions 20 on both sides rotates along with the rotating rod, the driving plate four 18 connected with the outer ends of the two rotating rods 17 props up the teaching keyboard 6 transferred on the upper end of the sliding plate 25 through the connecting block 19 sliding on the lower side of the teaching keyboard 6, so that the elevation angle of the teaching keyboard 6 parallel to the horizontal desk 1 is increased, the teaching keyboard 6 is pushed forwards, the angle is increased, when the teaching keyboard 6 needs to be returned to the original position, the clamping blocks 24 on both sides of the keyboard are shifted, so that the ratchet wheels 23 on both sides of the sliding plate 25 lose the rotation limitation of the clamping blocks 24, and then the sliding plate 25 is slowly pulled backwards, so as to reset the keyboard, and the method for adjusting the teaching keyboard can be changed through the forward and back.
The specific working principle of the invention is as follows:
the sliding keyboard for teaching needs an external control switch to control and operate the electric lifting cylinders 4 on two sides in the desk 1;
when the teaching keyboard 6 needs to be used, two electric lifting cylinders 4 in the desk 1 are controlled to work through a control switch, the two electric lifting cylinders 4 lift the keyboard seat 2 connected with the upper end of the desk, then the keyboard seat 2 moves upwards, meanwhile, the keyboard seat 2 enables a first transmission plate 9 to rotate at an angle through a second transmission plate 10, a third transmission plate 11 fixedly connected with the first transmission plate 9 and a fan-shaped toothed plate 7 rotate together, the third transmission plates 11 on two sides fixedly connected with the fan-shaped toothed plate 7 rotate outwards, and the third transmission plates 11 on the other two sides between the connected cover plate 3 and the desk 1 are matched, so that two cover plates 3 on the surface of the desk 1 move outwards to leave a position for the keyboard seat 2 which ascends in the middle;
until the electric lifting cylinder 4 lifts the keyboard base 2 to the top side of the desk 1, the desk is controlled to stop lifting, the cover plates 3 on the two sides are moved to the left side and the right side of the keyboard base 2 at the moment, and the unfolded desk 1 enables the cover plates 3 on the two sides and the middle keyboard base 2 to form a new teaching desktop, so that the area of the desk 1 is increased, and teaching of a teacher is facilitated;
when the keyboard seat 2 is lifted, the double-sided rack 12 positioned between the two sector toothed plates 7 on one side is driven to move upwards, the upwards-moving double-sided rack 12 drives the piston rod 8 on the upper side of the double-sided rack to move upwards through the connecting plate 15, the piston rod 8 moves towards the inside of the air cylinder 13 in the desk 1, so that air is extruded and is sent into the inflatable wrist support 16 air bag on the surface of the keyboard seat 2 through the air pipe 14, the air bag is expanded, and the expanded air bag can be used as a keyboard wrist support, so that the burden of a teacher on the wrist when the teacher uses the keyboard frequently can be relieved;
when the teaching keyboard 6 is not needed to be used, the keyboard base 2 is controlled to move downwards to the initial position through the electric lifting cylinder 4, according to the transmission relation, when the keyboard base 2 and the teaching keyboard 6 on the upper side of the keyboard base are stored in the desk 1, the cover plates 3 on the two sides of the desk 1 move inwards, and the upper side of the desk 1 is covered again, so that the arrangement of the structure not only can play a role in protecting the teaching keyboard 6 on the keyboard base 2, but also can prevent the keyboard from being polluted by dust due to long-term exposure;
when the teaching keyboard 6 is used and the pitch angle of the teaching keyboard 6 on the slide seat 5 needs to be adjusted, the teaching keyboard 6 which slides on the slide seat 5 through the sliding plate 25 is directly pushed backwards, when the sliding plate 25 translates forwards, the gearwheel 21 of the two sides of the sliding plate is meshed with the tooth grooves correspondingly formed in the two sides of the slide seat 5, so that the gearwheel 21 rotates, the gearwheel 21 then drives the pinion 20 meshed at the front side to rotate, the rotating rod 17 between the pinions 20 at the two sides rotates along with the rotating rod, the driving plate four 18 connected to the outer ends of the two rotating rods 17 props up the teaching keyboard 6 switched to the upper end of the sliding plate 25 through the connecting block 19 sliding on the lower side of the teaching keyboard 6, so that the elevation angle of the teaching keyboard 6 parallel to the horizontal desk 1 is increased, the higher the angle is increased when the teaching keyboard 6 is pushed forwards, when the teaching keyboard 6 needs to be returned to the original position, the clamping blocks 24 at the two sides of the keyboard are shifted, the ratchet wheels 23 at the two sides of the sliding plate 25 lose the rotation limitation of the clamping blocks 24, and then the sliding plate 25 is slowly pulled backwards, so that the sliding plate can be reset, the teaching keyboard can be changed and the adjustment of the teaching keyboard 6 can be convenient for calculating the pitch angle of the teaching machine by the teaching keyboard.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (1)

1. A sliding keyboard for computer science and technology teaching comprises a desk (1) and a teaching keyboard (6), and is characterized in that cover plates (3) are arranged on the left side and the right side of the upper end of the desk (1), a keyboard seat (2) located in the desk (1) is arranged on the lower side of each cover plate (3), a sliding seat (5) is fixedly mounted on each keyboard seat (2), and the teaching keyboard (6) is located on the upper side of the sliding seat (5);
the keyboard base (2) is rotatably connected with a second transmission plate (10) on the left and right sides of the front side and the rear side, the other end of the second transmission plate (10) is rotatably connected with a first transmission plate (9), the outer side of the other end of the first transmission plate (9) is rotatably connected with a third transmission plate (11), the other end of the third transmission plate (11) is rotatably connected with a cover plate (3) corresponding to one side, and the third transmission plate (11) is arranged between the outer ends of the front side and the rear side of the cover plate (3) and the desk (1);
a fan-shaped toothed plate (7) is rotatably connected to the inner side of the other end of the first transmission plate (9) on the rear side, a double-sided rack (12) which is meshed with each other is arranged between the two fan-shaped toothed plates (7), and an air cylinder (13) fixed inside the desk (1) is arranged on the front side of the double-sided rack (12);
an inflatable wrist support (16) is arranged on the front side of the surface of the keyboard seat (2), the inflatable wrist support (16) is a semi-cylindrical air bag, and an air pipe (14) is connected between the inflatable wrist support (16) and the air cylinder (13);
a sliding plate (25) is arranged on the lower side of the teaching keyboard (6), the sliding plate (25) slides on the sliding base (5) front and back, rotary columns (22) are fixed at the left end and the right end of the front side of the sliding plate (25), and the left end and the right end of the teaching keyboard (6) are rotatably connected to the rotary columns (22);
the rear side of the sliding plate (25) is rotatably connected with a rotating rod (17), the left end and the right end of the rotating rod (17) are fixedly connected with a driving plate IV (18), the other end of the driving plate IV (18) is rotatably connected with a connecting block (19), and the connecting block (19) slides forwards and backwards on the bottom surface of the teaching keyboard (6);
a pinion (20) fixed at the outer end of the rotating rod (17) is arranged on the outer side of each of the two driving plates (18), a large gear (21) meshed with the pinion (20) is arranged on the front side of the pinion (20), the two large gears (21) are rotatably connected to the left side and the right side of the sliding plate (25), and tooth grooves corresponding to the large gears (21) are formed in the inner parts of the two sides of the sliding seat (5);
ratchet wheels (23) are fixedly mounted at the outer ends of the two rotary columns (22), clamping strip blocks (24) corresponding to the ratchet wheels are arranged on the upper sides of the ratchet wheels (23), the clamping strip blocks (24) are rotatably connected to the two sides of the teaching keyboard (6), and torsion springs are arranged at the switching positions of the clamping strip blocks (24);
the keyboard base (2) slides up and down in the desk (1), electric lifting cylinders (4) are installed on the left and right sides in the desk (1), and the upper ends of the electric lifting cylinders (4) are fixedly connected with the bottom surface of the keyboard base (2);
the double-sided rack (12) is characterized in that a connecting plate (15) is fixedly connected to the front side of the double-sided rack (12), a piston rod (8) is fixedly connected to the upper side of the connecting plate (15), and a piston located inside an inflator (13) is fixedly connected to the upper end of the piston rod (8).
CN202111217052.0A 2021-10-19 2021-10-19 Sliding keyboard for computer science and technology teaching Active CN113796652B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN202111217052.0A CN113796652B (en) 2021-10-19 2021-10-19 Sliding keyboard for computer science and technology teaching

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CN113796652B true CN113796652B (en) 2022-12-20

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CN115029907A (en) * 2022-06-14 2022-09-09 浙江鸿衿实业有限公司 Efficient ironing device for garment production

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CN209346277U (en) * 2018-10-15 2019-09-06 福建越泽信息科技有限公司 A kind of expansible desk
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CN210627151U (en) * 2019-12-19 2020-05-26 重庆凯弘科技有限公司 Airbag type wrist supporting structure of mouse
CN212160614U (en) * 2020-07-01 2020-12-15 刘磊磊 Sliding keyboard for computer science and technology teaching
CN112473092A (en) * 2020-11-10 2021-03-12 李双杰 Medical care is with hand exercise equipment convenient to adjust
CN213634423U (en) * 2020-11-24 2021-07-06 陕西科技大学镐京学院 Sliding keyboard for computer science and technology teaching
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