CN116373490A - Adjustable blackboard convenient to use - Google Patents
Adjustable blackboard convenient to use Download PDFInfo
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- CN116373490A CN116373490A CN202310427430.0A CN202310427430A CN116373490A CN 116373490 A CN116373490 A CN 116373490A CN 202310427430 A CN202310427430 A CN 202310427430A CN 116373490 A CN116373490 A CN 116373490A
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- blackboard
- frame
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- auxiliary
- positioning
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- 239000000428 dust Substances 0.000 claims abstract description 48
- 238000004140 cleaning Methods 0.000 claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000007306 turnover Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005096 rolling process Methods 0.000 description 7
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000003245 working effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000005337 ground glass Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
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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
- A47B97/00—Furniture or accessories for furniture, not provided for in other groups of this subclass
- A47B97/04—Easels or stands for blackboards or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
- B43L21/02—Blackboard or slate cleaning devices with means for absorbing the chalk dust
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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- Drawing Aids And Blackboards (AREA)
Abstract
The invention discloses an adjustable blackboard convenient to use, which belongs to the technical field of adjustable blackboards and comprises a main blackboard, an auxiliary blackboard and an adjusting mechanism, wherein the adjusting mechanism comprises: the device comprises a fixed frame, a supporting frame, a suction assembly, a positioning plate, a positioning frame, a height adjusting assembly, a sliding assembly and a cleaning assembly; the main blackboard is fixedly arranged on the outer side of the fixed frame, dust falling on the main blackboard and the auxiliary blackboard can be absorbed and collected through the absorbing component, the height of the main blackboard can be adjusted through the height adjusting component, and teaching staff with different heights can use the main blackboard conveniently; the sliding component can facilitate the auxiliary blackboard to extend or retract to the inner side of the fixed frame, can enable the auxiliary blackboard to be used on two sides, improves the using effect, and can automatically clean the auxiliary blackboard through the cleaning component, thereby facilitating the use.
Description
Technical Field
The invention belongs to the technical field of adjustable blackboard, and particularly relates to an adjustable blackboard convenient to use.
Background
The blackboard is not a black board, which is a plane capable of being repeatedly written by chalks in the traditional sense, the board is hard and is mostly used for teaching, the blackboard is generally made of wood boards or ground glass and the like, and the blackboard can be used for writing on the blackboard by using specific writing materials such as chalks and the like, and is mostly black, dark green, white or beige.
The area of the existing blackboard can be adjusted, but the blackboard area increased in the use process is inconvenient to further expand, the auxiliary blackboard is inconvenient to use on two sides, the auxiliary blackboard is inconvenient to clean the surface of the auxiliary blackboard in the shrinkage process, the auxiliary blackboard is thrown to be manually wiped, and the falling dust is inconvenient to collect, so that the body health of teaching staff is influenced.
To avoid the above-mentioned problems, it is necessary to provide an adjustable blackboard which is easy to use and overcomes the drawbacks of the prior art.
Disclosure of Invention
The invention aims to provide an adjustable blackboard which is convenient to use and solves the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an adjustable blackboard convenient to use, includes main blackboard, vice blackboard and adjustment mechanism, adjustment mechanism includes:
the fixed frame is fixedly connected with the main blackboard, a supporting frame is arranged at the bottom end of the fixed frame, and a suction assembly is arranged at the inner side of the supporting frame and used for collecting dust falling on the main blackboard and the auxiliary blackboard; the bottom end of the supporting frame is provided with a positioning plate, the outer side of the positioning plate is provided with a positioning frame, the positioning plate is connected with the positioning frame in a concave-convex manner, and a height adjusting assembly is arranged between the positioning plate and the positioning frame and used for adjusting the height of the fixed frame;
the auxiliary blackboard is arranged on the fixed frame, a sliding component is arranged between the auxiliary blackboard and the fixed frame and used for enabling the auxiliary blackboard to extend out of or retract into the inner side of the fixed frame and enabling the auxiliary blackboard to be overturned, so that the auxiliary blackboard can be used on two sides; and a cleaning component is further arranged between the auxiliary blackboard and the fixed frame and used for cleaning two sides of the auxiliary blackboard when the auxiliary blackboard moves along the inner side of the fixed frame.
As a further technical scheme of the invention: the suction assembly includes:
the collecting vat is located the carriage, the collecting vat top is equipped with a plurality of holes of absorbing, the collecting vat is close to carriage one end fixed mounting and has the connecting pipe, the connecting pipe inboard is equipped with the collecting frame, the collecting frame with connecting pipe unsmooth connection, the filter screen is still installed to the connecting frame inboard, connecting pipe stretches out carriage one end fixed mounting and has the fan.
As a further technical scheme of the invention: the height adjustment assembly includes:
the driving piece is fixedly installed in the middle of the bottom end of the inner side of the positioning frame, a driving rod is fixedly installed at the output end of the driving piece, a moving block is installed on the outer side of the driving piece, the moving block is in threaded connection with the driving rod, a first hinging seat is fixedly installed at the top end of the moving block, a second hinging seat is fixedly installed at one end of the inner side of the positioning plate extending out of the positioning frame, a connecting rod is installed between the first hinging seat and the second hinging seat, and two ends of the connecting rod are in rotary connection with the first hinging seat and the second hinging seat.
As a further technical scheme of the invention: the sliding assembly includes:
the sliding rail is fixedly arranged at the upper end and the lower end of the inner side of the fixed frame, the inner side of the fixed frame is provided with a positioning rod, two ends of the positioning rod are provided with limiting blocks, pulleys are arranged on the limiting blocks and are in contact with the sliding rail, the positioning rod is vertical at the inner side of the fixed frame, a vertical connecting plate is arranged at the outer side of the positioning rod, one end, far away from the positioning rod, of the connecting plate is provided with a connecting frame, and the connecting frame is rotationally connected with the connecting plate;
and a turnover assembly is arranged between the connecting frame and the auxiliary blackboard and used for enabling the auxiliary blackboard to perform turnover operation on the connecting frame.
As a further technical scheme of the invention: the flip assembly includes:
the locating groove is positioned in the middle of the auxiliary blackboard, a long rod is arranged in the middle of the connecting frame and extends out of the inner side of the locating groove, a locating block is fixedly arranged at one end of the long rod extending into the inner side of the locating groove, an elastic piece is sleeved on the outer side of the long rod, one end of the elastic piece is connected with the inner wall of the locating groove, and the other end of the elastic piece is connected with the locating block;
limiting rods are arranged at the upper end and the lower end of the connecting frame, limiting holes are formed in one end, close to the connecting frame, of the auxiliary blackboard, and the limiting rods correspond to the limiting rods one by one; and a handle is arranged at one end of the auxiliary blackboard far away from the connecting frame.
As a further technical scheme of the invention: the cleaning assembly includes:
the fixing frame is arranged at two ends of the inner side of the fixing frame, a short rod is arranged on the fixing frame and is rotationally connected with the fixing frame, connecting teeth are arranged on the outer side of the short rod, a rotating rod is arranged on the side face of the connecting teeth, rotating teeth are arranged on the outer side of one end of the rotating rod opening, which is positioned on the inner side of the fixing frame, of the rotating rod opening, the rotating teeth are meshed with the connecting teeth, and cleaning brushes are arranged on the outer side of the rotating rod;
the upper end and the lower end of the auxiliary blackboard are provided with fixing grooves, racks are arranged on the inner sides of the fixing grooves, and the racks are in meshed connection with the connecting teeth.
As a further technical scheme of the invention: the blackboard is characterized in that writing surfaces are arranged on two sides of the auxiliary blackboard, the two auxiliary blackboards and the two sliding assemblies are symmetrically distributed on the inner side of the fixed frame, and the four cleaning assemblies are arranged on the fixed frame and the auxiliary blackboard and are used for simultaneously cleaning the two writing surfaces of the auxiliary blackboard.
Compared with the prior art, the invention has the following beneficial effects:
according to the adjustable blackboard convenient to use, the main blackboard is fixedly arranged on the outer side of the fixed frame, dust falling on the main blackboard and the auxiliary blackboard can be sucked and collected through the suction assembly, the height of the main blackboard can be adjusted through the height adjusting assembly, and teaching staff with different heights can use the adjustable blackboard conveniently; the sliding component can facilitate the auxiliary blackboard to extend or retract to the inner side of the fixed frame, can enable the auxiliary blackboard to be used on two sides, improves the using effect, and can automatically clean the auxiliary blackboard through the cleaning component, thereby facilitating the use.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of a sliding assembly according to the present invention.
Fig. 3 is a schematic structural view between the inner side of the fixing frame and the auxiliary blackboard in the present invention.
FIG. 4 is a schematic view of a cleaning assembly according to the present invention.
Fig. 5 is a schematic view showing a structure between the sub-blackboard and the cleaning assembly in the present invention.
Fig. 6 is a schematic view of the structure of the secondary blackboard in the present invention.
In the accompanying drawings: 1-main blackboard, 2-auxiliary blackboard, 3-fixed frame, 4-supporting frame, 5-absorbing component, 51-collecting tank, 52-absorbing hole, 53-connecting pipe, 54-collecting frame, 55-filter screen, 56-fan, 6-height adjusting component, 61-driving piece, 62-driving rod, 63-moving block, 64-first hinging seat, 65-connecting rod, 66-second hinging seat, 7-locating plate, 8-locating frame, 9-sliding component, 91-sliding rail, 92-locating rod, 93-limiting block, 94-pulley, 95-connecting plate, 96-connecting frame, 97-overturning component, 971-locating groove, 972-long rod, 973-locating block, 974-elastic piece, 975-limiting rod, 976-limiting hole, 10-cleaning component, 101-fixed frame, 102-short rod, 103-connecting tooth, 104-rotating rod, 105-rotating tooth, 106-cleaning brush, 107-fixed groove, 108-rack and 11-handle.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
Example 1
As shown in fig. 1 to 6, in an embodiment provided by the present invention, an adjustable blackboard convenient to use includes a main blackboard 1, an auxiliary blackboard 2, and an adjusting mechanism, the adjusting mechanism includes:
the fixed frame 3 is fixedly connected with the main blackboard 1, a supporting frame 4 is arranged at the bottom end of the fixed frame 3, and a suction component 5 is arranged at the inner side of the supporting frame 4 and used for collecting dust falling on the main blackboard 1 and the auxiliary blackboard 2; the bottom end of the supporting frame 4 is provided with a positioning plate 7, the outer side of the positioning plate 7 is provided with a positioning frame 8, the positioning plate 7 is connected with the positioning frame 8 in a concave-convex manner, and a height adjusting assembly 6 is arranged between the positioning plate 7 and the positioning frame 8 and used for adjusting the height of the fixed frame 3;
the auxiliary blackboard 2 is arranged on the fixed frame 3, a sliding component 9 is arranged between the auxiliary blackboard 2 and the fixed frame 3, and is used for enabling the auxiliary blackboard 2 to extend out of or retract into the inner side of the fixed frame 3, enabling the auxiliary blackboard 2 to be overturned, and enabling the auxiliary blackboard 2 to be used on two sides; a cleaning assembly 10 is further installed between the auxiliary blackboard 2 and the fixed frame 3, and is used for cleaning two sides of the auxiliary blackboard 2 when the auxiliary blackboard 2 moves along the inner side of the fixed frame 3.
In this embodiment, the main blackboard 1 is fixedly installed at the outer side of the fixed frame 3, dust falling on the main blackboard 1 and the auxiliary blackboard 2 can be sucked and collected through the suction component 5, and the height of the main blackboard 1 can be adjusted through the height adjusting component 6, so that teaching staff with different heights can use the dust conveniently; the sliding component 9 can facilitate the auxiliary blackboard 2 to extend or retract to the inner side of the fixed frame 3, can enable the auxiliary blackboard 2 to be used on two sides, improves the use effect, can automatically clean the auxiliary blackboard 2 through the cleaning component 10, and is convenient to use; the locating plate 7 with unsmooth connection of locating frame 8 is convenient for keep the stability of fixed frame 3 when carrying out the altitude mixture control, avoids fixed frame 3 to empty, improves the stability of blackboard.
In one embodiment of the present invention, referring to fig. 1, the suction assembly 5 includes:
the collecting tank 51 is located the braced frame 4, the collecting tank 51 top is equipped with a plurality of suction holes 52, the collecting tank 51 is close to braced frame 4 one end fixed mounting has connecting pipe 53, the connecting pipe 53 inboard is equipped with the collecting frame 54, the collecting frame 54 with connecting pipe 53 unsmooth connection, the filter screen 55 is still installed to the connecting frame inboard, connecting pipe 53 stretches out braced frame 4 one end fixed mounting has fan 56.
In this embodiment, the collecting tank 51 is located at one end of the supporting frame 4, the bottom end of the inner side of the collecting tank 51 is inclined, so that dust entering the inner side of the collecting tank 51 can enter the connecting inner side conveniently and fall into the inner side of the collecting frame 54, the collecting frame 54 is detachably connected with the connecting pipe 53, so that collected dust can be taken out conveniently, the filter screen 55 is inclined inside the connecting pipe 53, dust can be effectively prevented from adhering to the filter screen 55, and the working effect of the filter screen 55 is improved; the fan 56 can enable air to pass through the collecting tank 51 and the connecting pipe 53, so that falling dust can conveniently enter the inner side of the collecting tank 51 through the suction hole 52, and the dust collecting operation is finished, so that the dust is prevented from diffusing, and the dust collecting device is convenient to use;
the suction components 5 are provided with two groups and are symmetrically distributed on the supporting frame 4, the suction components 5 can suck the dust falling on the main blackboard 1, and can suck and collect the dust falling on the auxiliary blackboard 2 at the inner side of the fixed frame 3, so that the dust suction device is convenient to use.
In one embodiment of the present invention, referring to fig. 1, the height adjusting assembly 6 includes:
the driving piece 61, fixed mounting is in the inboard bottom middle part of locating frame 8, driving piece 61 output fixed mounting has actuating lever 62, movable block 63 is installed in the driving piece 61 outside, movable block 63 with actuating lever 62 threaded connection, movable block 63 top fixed mounting has first articulated seat 64, locating plate 7 stretches out locating frame 8 inboard one end fixed mounting has second articulated seat 66, install connecting rod 65 between first articulated seat 64 and the second articulated seat 66, connecting rod 65 both ends with first articulated seat 64 and the equal swivelling joint of second articulated seat 66.
In this embodiment, the driving member 61 may be a rotating motor or a stepping motor, in this embodiment, the driving member 61 is a dual-shaft motor, two output ends of the driving member 61 are both provided with a driving rod 62, a rolling bearing is installed between the driving rod 62 and an inner wall of the positioning frame 8, the driving rod 62 is horizontal, the driving rod 62 may stably rotate inside the positioning frame 8 along with the output end of the driving member 61, the driving rod 62 is a threaded rod in this embodiment, a screw hole is provided in the middle of the moving block 63, the inside of the screw hole is in threaded connection with the outside of the driving rod 62, when the driving rod 62 rotates, the moving block 63 can move along the driving rod 62, the bottom end of the moving block 63 is fixedly installed on a roller, the moving block 63 is conveniently moved inside the positioning frame 8, a first hinge seat 64 is fixedly installed on the moving block 63, two sides of the bottom end of the positioning plate 7 are fixedly installed with a second hinge seat 66, and a hinge bearing is installed between the two ends of the connecting rod 65 and the first hinge seat 64 and the second hinge seat 66;
the first hinging seat 64, the connecting rod 65, the second hinging seat 66 and the moving blocks 63 are respectively provided with two groups of symmetrically distributed on the two driving rods 62, when the driving piece 61 controls the driving rods 62 to rotate, the two moving blocks 63 can be made to perform relative movement, the positioning plate 7 is conveniently driven to drive the supporting frame 4 and the fixing frame 3 to perform position movement in the vertical direction, and the height of the main blackboard 1 is further adjusted, so that the use is convenient.
Example 2
As shown in fig. 1 to 6, in an embodiment provided by the present invention, an adjustable blackboard convenient to use includes a main blackboard 1, an auxiliary blackboard 2, and an adjusting mechanism, the adjusting mechanism includes:
the fixed frame 3 is fixedly connected with the main blackboard 1, a supporting frame 4 is arranged at the bottom end of the fixed frame 3, and a suction component 5 is arranged at the inner side of the supporting frame 4 and used for collecting dust falling on the main blackboard 1 and the auxiliary blackboard 2; the bottom end of the supporting frame 4 is provided with a positioning plate 7, the outer side of the positioning plate 7 is provided with a positioning frame 8, the positioning plate 7 is connected with the positioning frame 8 in a concave-convex manner, and a height adjusting assembly 6 is arranged between the positioning plate 7 and the positioning frame 8 and used for adjusting the height of the fixed frame 3;
the auxiliary blackboard 2 is arranged on the fixed frame 3, a sliding component 9 is arranged between the auxiliary blackboard 2 and the fixed frame 3, and is used for enabling the auxiliary blackboard 2 to extend out of or retract into the inner side of the fixed frame 3, enabling the auxiliary blackboard 2 to be overturned, and enabling the auxiliary blackboard 2 to be used on two sides; a cleaning assembly 10 is further installed between the auxiliary blackboard 2 and the fixed frame 3, and is used for cleaning two sides of the auxiliary blackboard 2 when the auxiliary blackboard 2 moves along the inner side of the fixed frame 3.
In this embodiment, the main blackboard 1 is fixedly installed at the outer side of the fixed frame 3, dust falling on the main blackboard 1 and the auxiliary blackboard 2 can be sucked and collected through the suction component 5, and the height of the main blackboard 1 can be adjusted through the height adjusting component 6, so that teaching staff with different heights can use the dust conveniently; the sliding component 9 can facilitate the auxiliary blackboard 2 to extend or retract to the inner side of the fixed frame 3, can enable the auxiliary blackboard 2 to be used on two sides, improves the use effect, can automatically clean the auxiliary blackboard 2 through the cleaning component 10, and is convenient to use; the locating plate 7 with unsmooth connection of locating frame 8 is convenient for keep the stability of fixed frame 3 when carrying out the altitude mixture control, avoids fixed frame 3 to empty, improves the stability of blackboard.
In one embodiment of the present invention, referring to fig. 1, the suction assembly 5 includes:
the collecting tank 51 is located the braced frame 4, the collecting tank 51 top is equipped with a plurality of suction holes 52, the collecting tank 51 is close to braced frame 4 one end fixed mounting has connecting pipe 53, the connecting pipe 53 inboard is equipped with the collecting frame 54, the collecting frame 54 with connecting pipe 53 unsmooth connection, the filter screen 55 is still installed to the connecting frame inboard, connecting pipe 53 stretches out braced frame 4 one end fixed mounting has fan 56.
In this embodiment, the collecting tank 51 is located at one end of the supporting frame 4, the bottom end of the inner side of the collecting tank 51 is inclined, so that dust entering the inner side of the collecting tank 51 can enter the connecting inner side conveniently and fall into the inner side of the collecting frame 54, the collecting frame 54 is detachably connected with the connecting pipe 53, so that collected dust can be taken out conveniently, the filter screen 55 is inclined inside the connecting pipe 53, dust can be effectively prevented from adhering to the filter screen 55, and the working effect of the filter screen 55 is improved; the fan 56 can enable air to pass through the collecting tank 51 and the connecting pipe 53, so that falling dust can conveniently enter the inner side of the collecting tank 51 through the suction hole 52, and the dust collecting operation is finished, so that the dust is prevented from diffusing, and the dust collecting device is convenient to use;
the suction components 5 are provided with two groups and are symmetrically distributed on the supporting frame 4, the suction components 5 can suck the dust falling on the main blackboard 1, and can suck and collect the dust falling on the auxiliary blackboard 2 at the inner side of the fixed frame 3, so that the dust suction device is convenient to use.
In one embodiment of the present invention, referring to fig. 1, the height adjusting assembly 6 includes:
the driving piece 61, fixed mounting is in the inboard bottom middle part of locating frame 8, driving piece 61 output fixed mounting has actuating lever 62, movable block 63 is installed in the driving piece 61 outside, movable block 63 with actuating lever 62 threaded connection, movable block 63 top fixed mounting has first articulated seat 64, locating plate 7 stretches out locating frame 8 inboard one end fixed mounting has second articulated seat 66, install connecting rod 65 between first articulated seat 64 and the second articulated seat 66, connecting rod 65 both ends with first articulated seat 64 and the equal swivelling joint of second articulated seat 66.
In this embodiment, the driving member 61 may be a rotating motor or a stepping motor, in this embodiment, the driving member 61 is a dual-shaft motor, two output ends of the driving member 61 are both provided with a driving rod 62, a rolling bearing is installed between the driving rod 62 and an inner wall of the positioning frame 8, the driving rod 62 is horizontal, the driving rod 62 may stably rotate inside the positioning frame 8 along with the output end of the driving member 61, the driving rod 62 is a threaded rod in this embodiment, a screw hole is provided in the middle of the moving block 63, the inside of the screw hole is in threaded connection with the outside of the driving rod 62, when the driving rod 62 rotates, the moving block 63 can move along the driving rod 62, the bottom end of the moving block 63 is fixedly installed on a roller, the moving block 63 is conveniently moved inside the positioning frame 8, a first hinge seat 64 is fixedly installed on the moving block 63, two sides of the bottom end of the positioning plate 7 are fixedly installed with a second hinge seat 66, and a hinge bearing is installed between the two ends of the connecting rod 65 and the first hinge seat 64 and the second hinge seat 66;
the first hinging seat 64, the connecting rod 65, the second hinging seat 66 and the moving blocks 63 are respectively provided with two groups of symmetrically distributed on the two driving rods 62, when the driving piece 61 controls the driving rods 62 to rotate, the two moving blocks 63 can be made to perform relative movement, the positioning plate 7 is conveniently driven to drive the supporting frame 4 and the fixing frame 3 to perform position movement in the vertical direction, and the height of the main blackboard 1 is further adjusted, so that the use is convenient.
In one embodiment of the present invention, referring to fig. 1, 2, 3 and 6, the sliding assembly 9 includes:
the sliding rail 91 is fixedly arranged at the upper end and the lower end of the inner side of the fixed frame 3, a positioning rod 92 is arranged at the inner side of the fixed frame 3, limiting blocks 93 are arranged at the two ends of the positioning rod 92, pulleys 94 are arranged on the limiting blocks 93, the pulleys 94 are in contact with the sliding rail 91, the positioning rod 92 is vertical at the inner side of the fixed frame 3, a vertical connecting plate 95 is arranged at the outer side of the positioning rod 92, a connecting frame 96 is arranged at one end, far away from the positioning rod 92, of the connecting plate 95, and the connecting frame 96 is in rotary connection with the connecting plate 95;
a turnover assembly 97 is installed between the connecting frame 96 and the auxiliary blackboard 2, and is used for enabling the auxiliary blackboard 2 to perform turnover operation on the connecting frame 96.
The flip assembly 97 includes:
the locating groove 971 is positioned in the middle of the auxiliary blackboard 2, a long rod 972 is arranged in the middle of the connecting frame 96, the long rod 972 extends out of the inner side of the locating groove 971, a locating block 973 is fixedly arranged at one end of the long rod 972 extending into the inner side of the locating groove 971, an elastic piece 974 is sleeved on the outer side of the long rod 972, one end of the elastic piece 974 is connected with the inner wall of the locating groove 971, and the other end of the elastic piece 974 is connected with the locating block 973;
limiting rods 975 are arranged at the upper end and the lower end of the connecting frame 96, limiting holes 976 are formed in one end, close to the connecting frame 96, of the auxiliary blackboard 2, and the limiting rods 975 are in one-to-one correspondence with the limiting rods 975; the end of the auxiliary blackboard 2 far away from the connecting frame 96 is provided with a handle 11.
In this embodiment, two slide rails 91 are provided and symmetrically installed at the upper and lower ends of the inner side of the fixed frame 3, a vertical positioning rod 92 is provided at the inner side of the fixed frame 3, two ends of the positioning rod 92 are both provided with a limiting block 93, a pulley 94 is installed on the limiting block 93, the limiting block 93 is horizontal, the shape formed by the limiting block 93 and the positioning rod 92 is i-shaped, the slide rails 91 are horizontal, the pulley 94 can facilitate the movement of the auxiliary blackboard 2 in the horizontal direction at the inner side of the fixed frame 3, and the stability of the auxiliary blackboard 2 in the moving process can be maintained through the limiting block 93;
the connecting plate 95 is arranged on the outer side of the positioning rod 92, the connecting plate 95 is also vertical, rolling bearings are arranged between the two ends of the connecting plate 95 and the connecting frame 96, the connecting frame 96 is also vertical, the connecting frame 96 is convenient to move on the inner side of the fixed frame 3, the connecting frame 96 can rotate at one end of the connecting plate 95, and a turnover assembly 97 is arranged between the connecting frame 96 and the auxiliary blackboard 2;
the middle part of the connecting frame 96 is fixedly provided with a horizontal long rod 972, the long rod 972 stretches into the inner side of a positioning frame 8 in the middle part of the auxiliary blackboard 2, one end of the long rod 972, which is positioned at the inner side of the positioning groove 971, is fixedly provided with a positioning block 973, the positioning block 973 is in concave-convex connection with the inner side of the positioning groove 971, the positioning block 973 is disc-shaped, an elastic piece 974 is arranged between the positioning block 973 and the positioning groove 971, the elastic piece 974 is sleeved on the outer side of the long rod 972, the distance between the auxiliary blackboard 2 and the connecting frame 96 is convenient to adjust, and the auxiliary blackboard 2 can rotate at the outer side of the long rod 972 through the positioning groove 971 and can move along the long rod 972;
the handle 11 is arranged on one side of the auxiliary blackboard 2, so that the auxiliary blackboard 2 can be conveniently pulled to move on the long rod 972 by hand, the limiting hole 976 is conveniently separated from the limiting rod 975 on the connecting frame 96, one end of the limiting rod 975, which is close to the limiting hole 976, is semicircular, when the limiting hole 976 is separated from the limiting rod 975, the auxiliary blackboard 2 can rotate outside the long rod 972 at this time, overturning operation of the auxiliary blackboard 2 is realized, and the limiting hole 976 is connected with the limiting rod 975 under the action of the elastic piece 974 after overturning, so that the auxiliary blackboard 2 is positioned on the connecting frame 96, and the auxiliary blackboard 2 is convenient to use; the elastic member 974 may be a spring or rubber, etc., and in this embodiment, the elastic member 974 is a spring.
Example 3
As shown in fig. 1 to 6, in an embodiment provided by the present invention, an adjustable blackboard convenient to use includes a main blackboard 1, an auxiliary blackboard 2, and an adjusting mechanism, the adjusting mechanism includes:
the fixed frame 3 is fixedly connected with the main blackboard 1, a supporting frame 4 is arranged at the bottom end of the fixed frame 3, and a suction component 5 is arranged at the inner side of the supporting frame 4 and used for collecting dust falling on the main blackboard 1 and the auxiliary blackboard 2; the bottom end of the supporting frame 4 is provided with a positioning plate 7, the outer side of the positioning plate 7 is provided with a positioning frame 8, the positioning plate 7 is connected with the positioning frame 8 in a concave-convex manner, and a height adjusting assembly 6 is arranged between the positioning plate 7 and the positioning frame 8 and used for adjusting the height of the fixed frame 3;
the auxiliary blackboard 2 is arranged on the fixed frame 3, a sliding component 9 is arranged between the auxiliary blackboard 2 and the fixed frame 3, and is used for enabling the auxiliary blackboard 2 to extend out of or retract into the inner side of the fixed frame 3, enabling the auxiliary blackboard 2 to be overturned, and enabling the auxiliary blackboard 2 to be used on two sides; a cleaning assembly 10 is further installed between the auxiliary blackboard 2 and the fixed frame 3, and is used for cleaning two sides of the auxiliary blackboard 2 when the auxiliary blackboard 2 moves along the inner side of the fixed frame 3.
In this embodiment, the main blackboard 1 is fixedly installed at the outer side of the fixed frame 3, dust falling on the main blackboard 1 and the auxiliary blackboard 2 can be sucked and collected through the suction component 5, and the height of the main blackboard 1 can be adjusted through the height adjusting component 6, so that teaching staff with different heights can use the dust conveniently; the sliding component 9 can facilitate the auxiliary blackboard 2 to extend or retract to the inner side of the fixed frame 3, can enable the auxiliary blackboard 2 to be used on two sides, improves the use effect, can automatically clean the auxiliary blackboard 2 through the cleaning component 10, and is convenient to use; the locating plate 7 with unsmooth connection of locating frame 8 is convenient for keep the stability of fixed frame 3 when carrying out the altitude mixture control, avoids fixed frame 3 to empty, improves the stability of blackboard.
In one embodiment of the present invention, referring to fig. 1, the suction assembly 5 includes:
the collecting tank 51 is located the braced frame 4, the collecting tank 51 top is equipped with a plurality of suction holes 52, the collecting tank 51 is close to braced frame 4 one end fixed mounting has connecting pipe 53, the connecting pipe 53 inboard is equipped with the collecting frame 54, the collecting frame 54 with connecting pipe 53 unsmooth connection, the filter screen 55 is still installed to the connecting frame inboard, connecting pipe 53 stretches out braced frame 4 one end fixed mounting has fan 56.
In this embodiment, the collecting tank 51 is located at one end of the supporting frame 4, the bottom end of the inner side of the collecting tank 51 is inclined, so that dust entering the inner side of the collecting tank 51 can enter the connecting inner side conveniently and fall into the inner side of the collecting frame 54, the collecting frame 54 is detachably connected with the connecting pipe 53, so that collected dust can be taken out conveniently, the filter screen 55 is inclined inside the connecting pipe 53, dust can be effectively prevented from adhering to the filter screen 55, and the working effect of the filter screen 55 is improved; the fan 56 can enable air to pass through the collecting tank 51 and the connecting pipe 53, so that falling dust can conveniently enter the inner side of the collecting tank 51 through the suction hole 52, and the dust collecting operation is finished, so that the dust is prevented from diffusing, and the dust collecting device is convenient to use;
the suction components 5 are provided with two groups and are symmetrically distributed on the supporting frame 4, the suction components 5 can suck the dust falling on the main blackboard 1, and can suck and collect the dust falling on the auxiliary blackboard 2 at the inner side of the fixed frame 3, so that the dust suction device is convenient to use.
In one embodiment of the present invention, referring to fig. 1, the height adjusting assembly 6 includes:
the driving piece 61, fixed mounting is in the inboard bottom middle part of locating frame 8, driving piece 61 output fixed mounting has actuating lever 62, movable block 63 is installed in the driving piece 61 outside, movable block 63 with actuating lever 62 threaded connection, movable block 63 top fixed mounting has first articulated seat 64, locating plate 7 stretches out locating frame 8 inboard one end fixed mounting has second articulated seat 66, install connecting rod 65 between first articulated seat 64 and the second articulated seat 66, connecting rod 65 both ends with first articulated seat 64 and the equal swivelling joint of second articulated seat 66.
In this embodiment, the driving member 61 may be a rotating motor or a stepping motor, in this embodiment, the driving member 61 is a dual-shaft motor, two output ends of the driving member 61 are both provided with a driving rod 62, a rolling bearing is installed between the driving rod 62 and an inner wall of the positioning frame 8, the driving rod 62 is horizontal, the driving rod 62 may stably rotate inside the positioning frame 8 along with the output end of the driving member 61, the driving rod 62 is a threaded rod in this embodiment, a screw hole is provided in the middle of the moving block 63, the inside of the screw hole is in threaded connection with the outside of the driving rod 62, when the driving rod 62 rotates, the moving block 63 can move along the driving rod 62, the bottom end of the moving block 63 is fixedly installed on a roller, the moving block 63 is conveniently moved inside the positioning frame 8, a first hinge seat 64 is fixedly installed on the moving block 63, two sides of the bottom end of the positioning plate 7 are fixedly installed with a second hinge seat 66, and a hinge bearing is installed between the two ends of the connecting rod 65 and the first hinge seat 64 and the second hinge seat 66;
the first hinging seat 64, the connecting rod 65, the second hinging seat 66 and the moving blocks 63 are respectively provided with two groups of symmetrically distributed on the two driving rods 62, when the driving piece 61 controls the driving rods 62 to rotate, the two moving blocks 63 can be made to perform relative movement, the positioning plate 7 is conveniently driven to drive the supporting frame 4 and the fixing frame 3 to perform position movement in the vertical direction, and the height of the main blackboard 1 is further adjusted, so that the use is convenient.
In one embodiment of the present invention, referring to fig. 1, 2, 3 and 6, the sliding assembly 9 includes:
the sliding rail 91 is fixedly arranged at the upper end and the lower end of the inner side of the fixed frame 3, a positioning rod 92 is arranged at the inner side of the fixed frame 3, limiting blocks 93 are arranged at the two ends of the positioning rod 92, pulleys 94 are arranged on the limiting blocks 93, the pulleys 94 are in contact with the sliding rail 91, the positioning rod 92 is vertical at the inner side of the fixed frame 3, a vertical connecting plate 95 is arranged at the outer side of the positioning rod 92, a connecting frame 96 is arranged at one end, far away from the positioning rod 92, of the connecting plate 95, and the connecting frame 96 is in rotary connection with the connecting plate 95;
a turnover assembly 97 is installed between the connecting frame 96 and the auxiliary blackboard 2, and is used for enabling the auxiliary blackboard 2 to perform turnover operation on the connecting frame 96.
The flip assembly 97 includes:
the locating groove 971 is positioned in the middle of the auxiliary blackboard 2, a long rod 972 is arranged in the middle of the connecting frame 96, the long rod 972 extends out of the inner side of the locating groove 971, a locating block 973 is fixedly arranged at one end of the long rod 972 extending into the inner side of the locating groove 971, an elastic piece 974 is sleeved on the outer side of the long rod 972, one end of the elastic piece 974 is connected with the inner wall of the locating groove 971, and the other end of the elastic piece 974 is connected with the locating block 973;
limiting rods 975 are arranged at the upper end and the lower end of the connecting frame 96, limiting holes 976 are formed in one end, close to the connecting frame 96, of the auxiliary blackboard 2, and the limiting rods 975 are in one-to-one correspondence with the limiting rods 975; the end of the auxiliary blackboard 2 far away from the connecting frame 96 is provided with a handle 11.
In this embodiment, two slide rails 91 are provided and symmetrically installed at the upper and lower ends of the inner side of the fixed frame 3, a vertical positioning rod 92 is provided at the inner side of the fixed frame 3, two ends of the positioning rod 92 are both provided with a limiting block 93, a pulley 94 is installed on the limiting block 93, the limiting block 93 is horizontal, the shape formed by the limiting block 93 and the positioning rod 92 is i-shaped, the slide rails 91 are horizontal, the pulley 94 can facilitate the movement of the auxiliary blackboard 2 in the horizontal direction at the inner side of the fixed frame 3, and the stability of the auxiliary blackboard 2 in the moving process can be maintained through the limiting block 93;
the connecting plate 95 is arranged on the outer side of the positioning rod 92, the connecting plate 95 is also vertical, rolling bearings are arranged between the two ends of the connecting plate 95 and the connecting frame 96, the connecting frame 96 is also vertical, the connecting frame 96 is convenient to move on the inner side of the fixed frame 3, the connecting frame 96 can rotate at one end of the connecting plate 95, and a turnover assembly 97 is arranged between the connecting frame 96 and the auxiliary blackboard 2;
the middle part of the connecting frame 96 is fixedly provided with a horizontal long rod 972, the long rod 972 stretches into the inner side of a positioning frame 8 in the middle part of the auxiliary blackboard 2, one end of the long rod 972, which is positioned at the inner side of the positioning groove 971, is fixedly provided with a positioning block 973, the positioning block 973 is in concave-convex connection with the inner side of the positioning groove 971, the positioning block 973 is disc-shaped, an elastic piece 974 is arranged between the positioning block 973 and the positioning groove 971, the elastic piece 974 is sleeved on the outer side of the long rod 972, the distance between the auxiliary blackboard 2 and the connecting frame 96 is convenient to adjust, and the auxiliary blackboard 2 can rotate at the outer side of the long rod 972 through the positioning groove 971 and can move along the long rod 972;
the handle 11 is arranged on one side of the auxiliary blackboard 2, so that the auxiliary blackboard 2 can be conveniently pulled to move on the long rod 972 by hand, the limiting hole 976 is conveniently separated from the limiting rod 975 on the connecting frame 96, one end of the limiting rod 975, which is close to the limiting hole 976, is semicircular, when the limiting hole 976 is separated from the limiting rod 975, the auxiliary blackboard 2 can rotate outside the long rod 972 at this time, overturning operation of the auxiliary blackboard 2 is realized, and the limiting hole 976 is connected with the limiting rod 975 under the action of the elastic piece 974 after overturning, so that the auxiliary blackboard 2 is positioned on the connecting frame 96, and the auxiliary blackboard 2 is convenient to use; the elastic member 974 may be a spring or rubber, etc., and in this embodiment, the elastic member 974 is a spring.
In one embodiment of the present invention, referring to fig. 1, 3, 4 and 5, the cleaning assembly 10 comprises:
the fixing frame 101 is arranged at two ends of the inner side of the fixing frame 3, a short rod 102 is arranged on the fixing frame 101, the short rod 102 is rotationally connected with the fixing frame 101, a connecting tooth 103 is arranged on the outer side of the short rod 102, a rotating rod 104 is arranged on the side surface of the connecting tooth 103, a rotating tooth 105 is arranged on the outer side of one end of a mouth of the rotating rod 104, which is positioned at the inner side of the fixing frame 101, the rotating tooth 105 is meshed with the connecting tooth 103, and a cleaning brush 106 is arranged on the outer side of the rotating rod 104;
the upper end and the lower end of the auxiliary blackboard 2 are provided with fixing grooves 107, racks 108 are arranged on the inner sides of the fixing grooves 107, and the racks 108 are in meshed connection with the connecting teeth 103.
In this embodiment, the fixing frames 101 are mounted at the upper and lower ends of the inner side of the fixing frame 3, rolling bearings are mounted between the two ends of the short rod 102 and the fixing frame 3, the short rod 102 is vertical, connecting teeth 103 are fixedly mounted on the outer side of the short rod 102, the connecting teeth 103 can stably rotate inside the fixing frames 101, the rotating rods 104 penetrate through the two fixing frames 101 and are vertical, rolling bearings are mounted between the rotating rods 104 and the fixing frames 101, rotating teeth 105 are fixedly mounted on the outer side of one end of the rotating rods 104 extending into the inner side of the fixing frames 101, and the rotating teeth 105 are in meshed connection with the connecting teeth 103; when the connecting teeth 103 rotate, the rotating teeth 105 and the rotating rod 104 can be driven to rotate, so that the cleaning brush 106 at the outer side of the rotating rod 104 can further rotate, and the cleaning brush 106 is in close contact with the surface of the auxiliary blackboard 2 when the auxiliary blackboard 2 is positioned at the inner side of the fixed frame 3;
the upper and lower both ends of vice blackboard 2 all are equipped with the fixed slot 107 of horizontal form, fixed slot 107 inboard fixed mounting has rack 108, when vice blackboard 2 is located fixed frame 3 inboard, rack 108 with the connection tooth 103 meshing is connected, and when the abdomen blackboard moved in fixed frame 3 inboard, rack 108 can drive connection tooth 103 rotates, and through connection tooth 103 and rotatory tooth 105 can realize the direction of rotation of cleaning brush 106 and vice blackboard 2 removal opposite direction, makes things convenient for cleaning brush 106 to clean the operation on vice blackboard 2 surface, is convenient for make the dust drop to can absorb the collection operation to the dust that drops through absorbing subassembly 5.
The two sides of the auxiliary blackboard 2 are respectively provided with a writing surface, the two auxiliary blackboards 2 and the two sliding assemblies 9 are respectively provided with two groups and are symmetrically distributed on the inner side of the fixed frame 3, and the four groups of cleaning assemblies 10 are arranged on the fixed frame 3 and the auxiliary blackboards 2 and are used for simultaneously cleaning the two writing surfaces of the auxiliary blackboards 2; when the auxiliary blackboard 2 moves inside the fixed frame 3, the auxiliary blackboard 2 can be cleaned, and the auxiliary blackboard is convenient to use; the link 96 with connecting plate 95 rotates to be connected, when vice blackboard 2 stretches out fixed frame 3 completely, can make things convenient for vice blackboard 2 to carry out angle modulation, conveniently demonstrate to can make things convenient for vice blackboard 2 to overturn the operation, the simple operation facilitates the use.
The working principle of the invention is as follows:
in the invention, firstly, for teaching staff with different heights, the driving piece 61 can be controlled to work, the driving rod 62 is rotated, and the height of the fixed frame 3 is adjusted through the moving block 63, the first hinging seat 64, the connecting rod 65 and the second hinging seat 66; when the main blackboard 1 is wiped, the fan 56 can be started to suck and collect the dropped dust, so that the dust is prevented from diffusing; the handle 11 can be pulled manually, the auxiliary blackboard 2 is pulled out of the fixed frame 3 or pushed back to the inner side of the fixed frame 3, the auxiliary blackboard 2 can be overturned, double-sided operation of the auxiliary blackboard 2 is facilitated, the use area is further increased, the auxiliary blackboard 2 can be not required to be wiped independently, and when the auxiliary blackboard 2 moves in the inner side of the fixed frame 3, cleaning operation can be carried out on two sides of the auxiliary blackboard 2, so that the auxiliary blackboard is convenient to use.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. The utility model provides an adjustable blackboard convenient to use, includes main blackboard, vice blackboard and adjustment mechanism, its characterized in that, adjustment mechanism includes:
the fixed frame is fixedly connected with the main blackboard, a supporting frame is arranged at the bottom end of the fixed frame, and a suction assembly is arranged at the inner side of the supporting frame and used for collecting dust falling on the main blackboard and the auxiliary blackboard; the bottom end of the supporting frame is provided with a positioning plate, the outer side of the positioning plate is provided with a positioning frame, the positioning plate is connected with the positioning frame in a concave-convex manner, and a height adjusting assembly is arranged between the positioning plate and the positioning frame and used for adjusting the height of the fixed frame;
the auxiliary blackboard is arranged on the fixed frame, a sliding component is arranged between the auxiliary blackboard and the fixed frame and used for enabling the auxiliary blackboard to extend out of or retract into the inner side of the fixed frame and enabling the auxiliary blackboard to be overturned, so that the auxiliary blackboard can be used on two sides; and a cleaning component is further arranged between the auxiliary blackboard and the fixed frame and used for cleaning two sides of the auxiliary blackboard when the auxiliary blackboard moves along the inner side of the fixed frame.
2. The easy-to-use adjustable blackboard according to claim 1, wherein the suction assembly includes:
the collecting vat is located the carriage, the collecting vat top is equipped with a plurality of holes of absorbing, the collecting vat is close to carriage one end fixed mounting and has the connecting pipe, the connecting pipe inboard is equipped with the collecting frame, the collecting frame with connecting pipe unsmooth connection, the filter screen is still installed to the connecting frame inboard, connecting pipe stretches out carriage one end fixed mounting and has the fan.
3. The easy-to-use adjustable blackboard according to claim 2, wherein the height adjusting assembly includes:
the driving piece is fixedly installed in the middle of the bottom end of the inner side of the positioning frame, a driving rod is fixedly installed at the output end of the driving piece, a moving block is installed on the outer side of the driving piece, the moving block is in threaded connection with the driving rod, a first hinging seat is fixedly installed at the top end of the moving block, a second hinging seat is fixedly installed at one end of the inner side of the positioning plate extending out of the positioning frame, a connecting rod is installed between the first hinging seat and the second hinging seat, and two ends of the connecting rod are in rotary connection with the first hinging seat and the second hinging seat.
4. The easy-to-use adjustable blackboard according to claim 1, wherein the sliding assembly includes:
the sliding rail is fixedly arranged at the upper end and the lower end of the inner side of the fixed frame, the inner side of the fixed frame is provided with a positioning rod, two ends of the positioning rod are provided with limiting blocks, pulleys are arranged on the limiting blocks and are in contact with the sliding rail, the positioning rod is vertical at the inner side of the fixed frame, a vertical connecting plate is arranged at the outer side of the positioning rod, one end, far away from the positioning rod, of the connecting plate is provided with a connecting frame, and the connecting frame is rotationally connected with the connecting plate;
and a turnover assembly is arranged between the connecting frame and the auxiliary blackboard and used for enabling the auxiliary blackboard to perform turnover operation on the connecting frame.
5. The easy to use adjustable blackboard according to claim 4, wherein the flipping assembly includes:
the locating groove is positioned in the middle of the auxiliary blackboard, a long rod is arranged in the middle of the connecting frame and extends out of the inner side of the locating groove, a locating block is fixedly arranged at one end of the long rod extending into the inner side of the locating groove, an elastic piece is sleeved on the outer side of the long rod, one end of the elastic piece is connected with the inner wall of the locating groove, and the other end of the elastic piece is connected with the locating block;
limiting rods are arranged at the upper end and the lower end of the connecting frame, limiting holes are formed in one end, close to the connecting frame, of the auxiliary blackboard, and the limiting rods correspond to the limiting rods one by one; and a handle is arranged at one end of the auxiliary blackboard far away from the connecting frame.
6. The easy to use adjustable blackboard according to claim 5, wherein the cleaning assembly includes:
the fixing frame is arranged at two ends of the inner side of the fixing frame, a short rod is arranged on the fixing frame and is rotationally connected with the fixing frame, connecting teeth are arranged on the outer side of the short rod, a rotating rod is arranged on the side face of the connecting teeth, rotating teeth are arranged on the outer side of one end of the rotating rod opening, which is positioned on the inner side of the fixing frame, of the rotating rod opening, the rotating teeth are meshed with the connecting teeth, and cleaning brushes are arranged on the outer side of the rotating rod;
the upper end and the lower end of the auxiliary blackboard are provided with fixing grooves, racks are arranged on the inner sides of the fixing grooves, and the racks are in meshed connection with the connecting teeth.
7. The adjustable blackboard of claim 6, wherein the two sides of the auxiliary blackboard are respectively provided with a writing surface, the auxiliary blackboard and the sliding component are respectively provided with two groups and are symmetrically distributed on the inner side of the fixed frame, and the cleaning component is provided with four groups and is arranged on the fixed frame and the auxiliary blackboard for simultaneously cleaning the two writing surfaces of the auxiliary blackboard.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310427430.0A CN116373490B (en) | 2023-04-20 | 2023-04-20 | Adjustable blackboard convenient to use |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310427430.0A CN116373490B (en) | 2023-04-20 | 2023-04-20 | Adjustable blackboard convenient to use |
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| CN116373490A true CN116373490A (en) | 2023-07-04 |
| CN116373490B CN116373490B (en) | 2024-09-06 |
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| CN113829782A (en) * | 2021-11-04 | 2021-12-24 | 临澧县职业中专学校 | Plug-type automatically cleaning dustless teaching blackboard |
| CN114905883A (en) * | 2022-06-13 | 2022-08-16 | 浙江商业职业技术学院 | Movable teaching blackboard |
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| JP2005035163A (en) * | 2003-07-14 | 2005-02-10 | Kitajima Seisakusho:Kk | Blackboard device |
| JP3135728U (en) * | 2007-07-13 | 2007-09-27 | 張振隆 | Roller type automatic wiping machine |
| CN210667216U (en) * | 2019-07-24 | 2020-06-02 | 山西弘信博科技有限公司 | Interactive education and teaching display device |
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| CN114905883A (en) * | 2022-06-13 | 2022-08-16 | 浙江商业职业技术学院 | Movable teaching blackboard |
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| CN116373490B (en) | 2024-09-06 |
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