CN200942657Y - Folding blackboard - Google Patents
Folding blackboard Download PDFInfo
- Publication number
- CN200942657Y CN200942657Y CN 200620115568 CN200620115568U CN200942657Y CN 200942657 Y CN200942657 Y CN 200942657Y CN 200620115568 CN200620115568 CN 200620115568 CN 200620115568 U CN200620115568 U CN 200620115568U CN 200942657 Y CN200942657 Y CN 200942657Y
- Authority
- CN
- China
- Prior art keywords
- hinge
- blackboards
- leaf
- hinges
- utility
- Prior art date
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
A foldable blackboard, comprising two hinges, a connecting shaft, fixing holes, and two blackboards; wherein, the two hinges are provided with fixing holes, and are fixed to the two blackboards or more blackboards with screws or rivets. The hinges can be folded to 90 degree; the extension part of a hinge is higher than the other hinge and overlay on the other hinge; the two hinges are arranged with a hole on the overlaid portion, with the connecting shaft inserted into the hole. The utility model has the following benefits: since the two blackboards are fixed on the top with hinges, the utility model can be opened conveniently and stay stably after it is opened, without loose contact between the blackboards; in addition, the utility model provides a larger writing area.
Description
Technical field
The utility model relates to a kind of collapsible blackboard, belongs to mechanical field.
Background technology
Collapsible blackboard has a lot of different structures.As the collapsible blackboard that patent " 98225525.X " is announced, its structure is comparatively complicated.
Summary of the invention
In order to overcome the deficiency of prior art structure, the utility model provides a kind of collapsible blackboard.
The technical scheme that its technical problem that solves the utility model adopts is: comprise 2 leaf of hinge, connecting axle, 2 blackboards, on 2 leaf of hinge fixing hole is arranged, be separately fixed at 2 blackboards or be no less than on 2 blackboards by screw or rivet.Hinge is converted into 90 degree, at the extension of an end of hinge, the extension of 1 leaf of hinge wherein be higher than another leaf of hinge and folded thereon, 2 hinges of overlapping part are porose, have connecting axle to be through in the hole.
The beneficial effects of the utility model are fixed on the top and the bottom end face of two blackboards by hinge, adopt the utility model, and it is convenient to open, and open the back and connect fasteningly, and loosening between blackboard and the blackboard, write area is big.
Description of drawings
Below in conjunction with drawings and Examples utility model is further specified.
Fig. 1 is the utility model schematic diagram.
Fig. 2 the utility model user mode schematic diagram.
The specific embodiment
Embodiment 1: as shown in Figure 1, 2, comprise 2 leaf of hinge 1,2, connecting axle 3,4,2 blackboards 7,8 of fixing hole, on leaf of hinge 1 and the leaf of hinge 2 fixing hole 4 is arranged respectively, be separately fixed on blackboard 7 and the blackboard 8 by screw or rivet.Leaf of hinge 1,2 is converted into 90 degree, but the edge of envelope blackboard end, at the extension of an end of hinge, the extension 6 of 1 leaf of hinge wherein be higher than another leaf of hinge extension 5 and folded thereon, 2 leaf of hinge of overlapping part are porose, have connecting axle 3 to be through in the hole.The equally fixing above-mentioned hinge in end below blackboard 7 and blackboard 8.
Embodiment 2: structure such as embodiment 1, connecting axle 3 can be rivet or bolt nut structure.Fixing hole 4 can have more than 2.
Claims (2)
1. a collapsible blackboard comprises 2 leaf of hinge, connecting axle, fixing hole, 2 blackboards, it is characterized in that: be equipped with fixing hole on 2 leaf of hinge, be separately fixed on 2 blackboards by screw.Hinge is converted into 90 degree, and at the hinge extension, the extension of 1 leaf of hinge wherein is higher than another leaf of hinge and folds thereon, and 2 leaf of hinge of overlapping part are porose, have connecting axle to be through in the hole.
2. a kind of hinge according to claim 1 is characterized in that: connecting axle 3 can be rivet or bolt nut structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620115568 CN200942657Y (en) | 2006-05-22 | 2006-05-22 | Folding blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620115568 CN200942657Y (en) | 2006-05-22 | 2006-05-22 | Folding blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200942657Y true CN200942657Y (en) | 2007-09-05 |
Family
ID=38717284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620115568 Expired - Fee Related CN200942657Y (en) | 2006-05-22 | 2006-05-22 | Folding blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200942657Y (en) |
-
2006
- 2006-05-22 CN CN 200620115568 patent/CN200942657Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070905 Termination date: 20110522 |