CN209932046U - Blackboard - Google Patents
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- Publication number
- CN209932046U CN209932046U CN201822244433.8U CN201822244433U CN209932046U CN 209932046 U CN209932046 U CN 209932046U CN 201822244433 U CN201822244433 U CN 201822244433U CN 209932046 U CN209932046 U CN 209932046U
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- CN
- China
- Prior art keywords
- plate
- blackboard
- leg
- legs
- screw
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a blackboard belongs to teaching aid technical field. The blackboard comprises a folding blackboard surface and a telescopic support, wherein the folding blackboard surface consists of a first plate, a second plate, a third plate and a fourth plate, the first plate and the second plate, the first plate and the third plate and the second plate and the fourth plate are respectively connected through hidden spring hinges, a clamping shaft is arranged on the side surface of the third plate, and a clamping hook is arranged on the side surface of the fourth plate; the telescopic bracket comprises an outer leg, an inner leg, a folding pull rod and an x-shaped positioning frame; the front and rear groups of outer legs are connected through connecting lugs to form a herringbone frame shape, and the left and right groups of outer legs are connected through an x-shaped positioning frame; an inner leg is arranged in the bottom end of each outer leg, and universal wheels are arranged at the bottom of the inner legs; the outer side of each outer leg is provided with a folding pull rod, and the outer sides of the two front outer legs are provided with blackboard brackets. The blackboard occupies small space and is convenient to carry.
Description
Technical Field
The utility model belongs to the technical field of the teaching aid, concretely relates to blackboard.
Background
The blackboard is one of the more indispensable teaching tool of teaching in-process, and it can give the student with the quick show of mr's knowledge, and current blackboard all is a fixed flat board basically, when going out to carry, because the volume also can occupation space too greatly, also can be inconvenient when carrying moreover.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a blackboard in order to solve the too big occupation space of current blackboard and carry inconvenient problem.
The utility model provides a blackboard, which comprises a folding blackboard surface and a telescopic bracket,
the foldable blackboard surface consists of a first plate, a second plate, a third plate and a fourth plate, wherein the first plate and the second plate, the first plate and the third plate, and the second plate and the fourth plate are respectively connected through hidden spring hinges, a clamping shaft is arranged on the side surface of the third plate, and a clamping hook is arranged on the side surface of the fourth plate;
the telescopic bracket comprises an outer leg, an inner leg, a folding pull rod and an x-shaped positioning frame; the outer legs are four square tubes, the upper part of each outer leg is provided with a connecting lug which is semicircular, the front and rear groups of outer legs are connected through the connecting lugs to form a herringbone frame shape, and the left and right groups of outer legs are connected through an x-shaped positioning frame; an inner leg is arranged in the bottom end of each outer leg, and universal wheels are arranged at the bottom of the inner legs;
the outer side surface of each outer leg is provided with a folding pull rod, two ends of each folding pull rod are provided with round holes, the outer side surface of each outer leg is provided with a first fixed shaft, and two ends of each folding pull rod are connected with the first fixed shaft through the round holes in a rotating mode;
the outer side surfaces of the two front outer legs are provided with blackboard brackets, and the brackets are connected with the two outer legs through second fixed shafts arranged on the two outer legs and rotate around the second fixed shafts.
Preferably, the thickness of the connecting lug is half of the side length of the square tube of the outer leg.
Preferably, the outer side of the axle center of the connecting lug is provided with a sinking groove, a through hole is arranged in the sinking groove, and the connecting lugs of the front outer leg and the rear outer leg are connected with the nut through a second screw.
Preferably, the x-shaped positioning frame is formed by intersecting two strip irons, and a round hole is formed between the two strip irons and connected through a connecting screw.
Preferably, the two ends of each bar iron are provided with sliding grooves, the front surface of each outer leg is provided with two second screw holes, and a first screw is screwed into the sliding groove to be screwed into the second screw holes to connect the outer legs and the x-shaped positioning frame.
Preferably, the folding position of the folding pull rod is provided with a fastening screw.
Preferably, the inner sides of the two outer leg brackets are provided with limiting blocks.
Preferably, the outer side of the bottom end of each outer leg is provided with a first screw hole, and a jackscrew is arranged in each first screw hole and used for fixing the inner leg.
The beneficial effects of the utility model
The utility model provides a blackboard, this blackboard include folding blackboard face and telescopic bracket, folding blackboard face because four plates can be folded according to a certain order, can fold it for original fourth's area, occupation space is few, telescopic bracket also can stretch out and draw back folding simultaneously, conveniently carries.
Drawings
FIG. 1 is a schematic structural view of a foldable blackboard of the present invention when the surface of the foldable blackboard is unfolded;
FIG. 2 is a schematic structural view of the folded blackboard surface of the blackboard according to the present invention;
FIG. 3 is a schematic structural view of a telescopic bracket in a blackboard according to the present invention;
FIG. 4 is a schematic structural view of a telescopic bracket in a blackboard according to the present invention;
FIG. 5 is a schematic structural view of a telescopic bracket in a blackboard according to the present invention;
FIG. 6 is a schematic structural view of a telescopic bracket in a blackboard according to the present invention;
in the figure, 1, an outer leg, 2, a folding pull rod, 3, a first fixing shaft, 4, a fastening screw, 5, a jackscrew, 6, an inner leg, 7, a universal wheel, 8, a connecting lug, 9, an x-shaped positioning frame, 10, a first screw, 11, a connecting screw, 12, a bracket, 13, a second fixing shaft, 14, a limiting block, 15, a second screw, 16, a sliding groove, 17, a first screw hole, 18, a nut, 19, a through hole, 20, a second screw hole, 21, a first plate, 22, a second plate, 23, a third plate, 24, a fourth plate, 25, a hidden spring hinge, 26, a clamping hook, 27, a clamping shaft, 28 and a sinking groove.
Detailed Description
The utility model provides a blackboard, which comprises a folding blackboard surface and a telescopic bracket,
as shown in fig. 1 and 2, the foldable blackboard surface is composed of a first board 21, a second board 22, a third board 23 and a fourth board 24, the first board 21 and the second board 22, the first board 21 and the third board 23, and the second board 22 and the fourth board 24 are respectively connected through a hidden spring hinge 25, a clamping shaft 27 is arranged on the side surface of the third board 23, a clamping hook 26 is arranged on the side surface of the fourth board 24, and the clamping hook 26 is connected with the fourth board 24 through a fixed shaft.
As shown in fig. 3-6, the telescopic bracket comprises an outer leg 1, an inner leg 6, a folding pull rod 2 and an x-shaped positioning frame 9;
the outer legs 1 are four square tubes, the upper part of each outer leg 1 is provided with a semicircular connecting lug 8, the front and rear groups of outer legs 1 are connected through the connecting lugs 8 to form a herringbone frame shape, the thickness of each connecting lug 8 is half of the side length of the square tube of the outer leg 1, the outer side of the axis of each connecting lug 8 is provided with a sinking groove 28, a through hole 19 is arranged in each sinking groove 28, and the connecting lugs of the front and rear outer legs 1 are connected with nuts 18 through second screws 15;
the left and right groups of outer legs 1 are connected through an x-type positioning frame 9, the x-type positioning frame 9 is formed by two crossed bar irons, a round hole is formed in the middle of each bar iron and connected through a connecting screw 11, sliding grooves 16 are formed in two ends of each bar iron, two second screw holes 20 are formed in the front face of each outer leg 1, a first screw 10 enters the sliding groove 16 and is screwed into the second screw hole 21 to connect the outer legs 1 and the x-type positioning frame 9, and the four outer legs 1 form a support;
an inner leg 6 is arranged in the bottom end of each outer leg 1, a first screw hole 17 is formed in the outer side of the bottom end of each outer leg 1, a jackscrew 5 is arranged in each first screw hole 17 and used for fixing the inner leg 6, and a universal wheel 7 is arranged at the bottom of each inner leg 6;
the outer side surface of each outer leg 1 is provided with a folding pull rod 2, two ends of each folding pull rod 2 are provided with round holes, the outer side surface of each outer leg 1 is provided with a first fixed shaft 3, two ends of each folding pull rod 2 are connected with the first fixed shaft 3 through the round holes to rotate, and a folding part of each folding pull rod 2 is provided with a fastening screw 4;
the outer side surfaces of the two front outer legs 1 are provided with blackboard brackets 12, the brackets 12 are connected with the two outer legs 1 through second fixing shafts 13 arranged on the two outer legs 1 and rotate around the second fixing shafts 13, and the inner sides of the brackets 12 of the two outer legs 1 are provided with limit blocks 14.
When the blackboard described in this embodiment needs to be folded, the first plate 21 and the second plate 22 are folded in half for 180 degrees toward the back of the blackboard, then the third plate 23 and the first plate 21, and the fourth plate 24 and the second plate 22 are folded in half for 180 degrees toward the front of the blackboard, the back of the folded third plate 23 and the back of the folded fourth plate 24 face outward, the front of the blackboard is protected, the rotating hook 26 is clamped into the clamping shaft 27, and the folded blackboard is fixed.
When the blackboard is required to be used, the fastening screw 4, the jackscrew 5 and the first screw 10 are loosened, the jackscrew 5 is screwed after the inner leg 6 is pulled out, the fastening screw 4 is screwed after the folding pull rod 2 is straightened, the first screw 10 is fixed after the two groups of human-shaped supports are opened, the supports are stabilized, the blackboard bracket 12 is pulled outwards to enable the other end of the blackboard bracket to be clamped on the limiting block 14, the clamping hook 26 on the side surface of the folding blackboard is opened, the fourth plate 24 and the second plate 22 are opened, the first plate 21 and the third plate 23 are opened, the first plate 21 and the second plate 22 are opened, and the whole blackboard is opened and placed on the bracket 12.
Claims (8)
1. A blackboard is characterized by comprising a folding blackboard surface and a telescopic bracket,
the foldable blackboard surface consists of a first plate, a second plate, a third plate and a fourth plate, wherein the first plate and the second plate, the first plate and the third plate, and the second plate and the fourth plate are respectively connected through hidden spring hinges, a clamping shaft is arranged on the side surface of the third plate, and a clamping hook is arranged on the side surface of the fourth plate;
the telescopic bracket comprises an outer leg, an inner leg, a folding pull rod and an x-shaped positioning frame; the outer legs are four square tubes, the upper part of each outer leg is provided with a connecting lug which is semicircular, the front and rear groups of outer legs are connected through the connecting lugs to form a herringbone frame shape, and the left and right groups of outer legs are connected through an x-shaped positioning frame; an inner leg is arranged in the bottom end of each outer leg, and universal wheels are arranged at the bottom of the inner legs;
the outer side surface of each outer leg is provided with a folding pull rod, two ends of each folding pull rod are provided with round holes, the outer side surface of each outer leg is provided with a first fixed shaft, and two ends of each folding pull rod are connected with the first fixed shaft through the round holes in a rotating mode;
the outer side surfaces of the two front outer legs are provided with blackboard brackets, and the brackets are connected with the two outer legs through second fixed shafts arranged on the two outer legs and rotate around the second fixed shafts.
2. A blackboard according to claim 1, characterised in that the thickness of the lugs is half of the length of the square tube of the outer leg.
3. The blackboard according to claim 1, wherein the outer side of the axle center of the connecting lug is provided with a sinking groove, a through hole is arranged in the sinking groove, and the connecting lugs of the front and rear outer legs are connected with the nut through a second screw.
4. The blackboard according to claim 1, wherein the x-shaped positioning frame is composed of two crossed bar-shaped irons, and a round hole is formed between the two crossed bar-shaped irons and connected through a connecting screw.
5. The blackboard according to claim 1, wherein sliding grooves are provided at both ends of each bar iron, two second screw holes are provided on the front surface of each outer leg, and a first screw is screwed into the sliding groove to connect the outer leg and the x-shaped positioning frame.
6. A blackboard according to claim 1, characterised in that the folding place of the folding pull rod is provided with a fastening screw.
7. A blackboard according to claim 1, characterised in that the inner sides of the two outer leg brackets are provided with limit blocks.
8. A blackboard according to claim 1, characterised in that the outer side of the bottom end of each outer leg is provided with a first screw hole in which a jack screw is fitted for fixing the inner leg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822244433.8U CN209932046U (en) | 2018-12-29 | 2018-12-29 | Blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822244433.8U CN209932046U (en) | 2018-12-29 | 2018-12-29 | Blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209932046U true CN209932046U (en) | 2020-01-14 |
Family
ID=69119774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822244433.8U Expired - Fee Related CN209932046U (en) | 2018-12-29 | 2018-12-29 | Blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209932046U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112869353A (en) * | 2021-02-02 | 2021-06-01 | 西安盛腾科果信息科技有限公司 | Teaching frame for information technology |
-
2018
- 2018-12-29 CN CN201822244433.8U patent/CN209932046U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112869353A (en) * | 2021-02-02 | 2021-06-01 | 西安盛腾科果信息科技有限公司 | Teaching frame for information technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 625, floor 6, building a, Science Park building, No. 2499, Weishan Road, Changchun hi tech Development Zone, 130000, Jilin Province Patentee after: Jilin Shenzhou Intelligent System Co.,Ltd. Address before: Room 625, floor 6, building a, Science Park building, No. 2499, Weishan Road, Changchun hi tech Development Zone, 130000, Jilin Province Patentee before: Jilin Shenzhou Education Technology Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200114 Termination date: 20211229 |