CN105835570A - Hand-rocking type up-down shifting blackboard - Google Patents
Hand-rocking type up-down shifting blackboard Download PDFInfo
- Publication number
- CN105835570A CN105835570A CN201610172018.9A CN201610172018A CN105835570A CN 105835570 A CN105835570 A CN 105835570A CN 201610172018 A CN201610172018 A CN 201610172018A CN 105835570 A CN105835570 A CN 105835570A
- Authority
- CN
- China
- Prior art keywords
- blackboard
- hand
- chain
- outer frame
- correspondingly
- 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.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The invention discloses a hand-rocking type up-down shifting blackboard. The hand-rocking type up-down shifting blackboard comprises an outer frame and is characterized in that guide gears are arranged on the inner sides of the four corners of the outer frame correspondingly and connected up and down through chains; a tightening ratchet wheel is arranged on the lower left side of the outer frame; the right side of the tightening ratchet wheel meshes with the corresponding chain; an upper blackboard body and a lower blackboard body are arranged in the outer frame; hanging lugs are arranged at the four corners of the lower blackboard body correspondingly; the chain is connected with the hanging lugs; a pull wire is further connected with the left hanging lug and the right hanging lug which are arranged on the upper side of the lower blackboard body; lifting lugs are arranged on the left and the right of the upper side of the upper blackboard body correspondingly; guide pulleys are arranged on the upper sides of the lifting lugs correspondingly; the pull wire is connected with the lifting lugs through the guide pulleys; and a handle is arranged on the front side of the tightening ratchet wheel. The hand-rocking type up-down shifting blackboard has the beneficial effects that the blackboard goes up and down through hand rocking, so that the blackboard is convenient to use and suitable for meeting the needs of lecturers with different heights, and the utilization efficiency of the blackboard is improved.
Description
Technical field
The present invention relates to a kind of blackboard, a kind of hand-rail type shifts blackboard up and down.
Background technology
Blackboard not refers in particular to the plate face of black, traditional sense is said it be one can be with the plane of repeated writing, plate face is hard, be used for teaching.Make with plank or ground glass etc., can write above with specific writing materials such as chalks.It mostly is black, blackish green, white or ecru.
Affected by the height of the teacher that teaches, the utilization rate of blackboard, cause when explaining problem, it is impossible to meet and write requirement, make student cannot link up unobstructed understanding, affect the learning efficiency.
Summary of the invention
The purpose of the present invention is to provide one not affected by teacher's height, by the hand blackboard implementing lifting.
For achieving the above object, technical scheme includes housing, it is characterized in that, it is provided with guide gear inside described housing corner, described guide gear is vertically connected with by chain, described housing lower left side is provided with tensioner ratchet, engage with chain on the right side of described tensioner ratchet, blackboard and lower blackboard it is provided with in described housing, described lower blackboard corner is provided with hangers, described chain is connected with hangers, on the upside of described lower blackboard, two hangers in left and right are also associated with draught line, on the upside of described upper blackboard, the right and left is provided with hanger, it is provided with leading block on the upside of described hanger, described draught line is connected with hanger by leading block, it is provided with handle on front side of described tensioner ratchet.
Owing to using technique scheme, beneficial effects of the present invention:
1, use upper and lower two groups of blackboards, facilitate student to record and write with lecturer.
2, shaking type lifting, has requested and has been affected the problem low to blackboard utilization rate by height.
3, upper blackboard and the lower mutual counterweight of blackboard are realized by draught line, time saving and energy saving, use easily.
Accompanying drawing explanation
In conjunction with accompanying drawing, the present invention will be further described.
Fig. 1 is the structural representation of the present invention.
In figure: 1, housing, 2, guide gear, 3, tensioner ratchet, 4, upper blackboard, 5, lower blackboard, 6, hangers, 7, draught line, 8, hanger, 9, leading block, 10, handle, 11, chain.
Detailed description of the invention
As shown in Figure 1, the present invention includes housing 1, it is characterized in that, it is provided with guide gear 2 inside described housing 1 four jiaos, described guide gear 2 is vertically connected with by chain 11, described housing 1 lower left side is provided with tensioner ratchet 3, engage with chain 11 on the right side of described tensioner ratchet 3, blackboard 4 and lower blackboard 5 it is provided with in described housing 1, 5 four jiaos of described lower blackboard is provided with hangers 6, described chain 11 is connected with hangers 6, on the upside of described lower blackboard 5, two hangers 6 in left and right are also associated with draught line 7, on the upside of described upper blackboard 4, the right and left is provided with hanger 8, it is provided with leading block 9 on the upside of described hanger 8, described draught line 7 is connected with hanger 8 by leading block 9, it is provided with handle 10 on front side of described tensioner ratchet 3.
The operation principle of the present invention: by handle 10 and the lifting coordinating the lower blackboard 5 of realization of tensioner ratchet 3 and location, then driving blackboard 4 to lift in lower blackboard 5 lifting process by draught line 7, both are mutually as counterweight, time saving and energy saving.
Claims (1)
1. a hand-rail type shifts blackboard up and down, including housing, it is characterized in that: inside described housing corner, be provided with guide gear, described guide gear is vertically connected with by chain, described housing lower left side is provided with tensioner ratchet, engage with chain on the right side of described tensioner ratchet, blackboard and lower blackboard it is provided with in described housing, described lower blackboard corner is provided with hangers, described chain is connected with hangers, on the upside of described lower blackboard, two hangers in left and right are also associated with draught line, on the upside of described upper blackboard, the right and left is provided with hanger, it is provided with leading block on the upside of described hanger, described draught line is connected with hanger by leading block, it is provided with handle on front side of described tensioner ratchet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610172018.9A CN105835570A (en) | 2016-03-24 | 2016-03-24 | Hand-rocking type up-down shifting blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610172018.9A CN105835570A (en) | 2016-03-24 | 2016-03-24 | Hand-rocking type up-down shifting blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105835570A true CN105835570A (en) | 2016-08-10 |
Family
ID=56583138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610172018.9A Pending CN105835570A (en) | 2016-03-24 | 2016-03-24 | Hand-rocking type up-down shifting blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105835570A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107443974A (en) * | 2017-08-09 | 2017-12-08 | 安徽状元郎电子科技有限公司 | A kind of interactive blackboard |
-
2016
- 2016-03-24 CN CN201610172018.9A patent/CN105835570A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107443974A (en) * | 2017-08-09 | 2017-12-08 | 安徽状元郎电子科技有限公司 | A kind of interactive blackboard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160810 |