CN2165003Y - Rise-and-fall blackboard - Google Patents
Rise-and-fall blackboard Download PDFInfo
- Publication number
- CN2165003Y CN2165003Y CN 93240683 CN93240683U CN2165003Y CN 2165003 Y CN2165003 Y CN 2165003Y CN 93240683 CN93240683 CN 93240683 CN 93240683 U CN93240683 U CN 93240683U CN 2165003 Y CN2165003 Y CN 2165003Y
- Authority
- CN
- China
- Prior art keywords
- blackboard
- framework
- runner frame
- rise
- fall
- 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
The utility model relates to a rise-and-fall blackboard, which balances the weight of the blackboard by a cylindrical helical spring. The user can cause the blackboard to move up to down by impelling the blackboard lightly. Compared with the rise-and-fall blackboard which balances the weight by balance weight, the rise-and-fall blackboard has the advantages of light weight, low cost, convenient installation, convenient transportation, etc. The rise-and-fall blackboard is particularly suitable for the classrooms of colleges, middle schools, primary schools and meeting rooms.
Description
The utility model relates to a kind of blackboard movable up and down.
Present blackboard movable up and down, as Chinese patent 90214961.X, the disclosed blackboard movable up and down of CN2075145U is that the counterweight of weights such as employing and blackboard realizes moving up and down of blackboard, whole blackboard installation weight is big, fixes and transport all inconveniences.
The purpose of this utility model provide a kind of in light weight, fix, tear open all blackboard movable up and down easily of fortune.
The utility model related blackboard movable up and down is the weight of coming the balance blackboard with spring.It is made up of blackboard, elevating mechanism and supporting device, is characterized in: elevating mechanism is made up of connecting rod, the spring assembly of runner frame, framework and two groups of symmetries.Runner frame is connected in the blackboard back side by two perpendicular chutes and the H type structure that the sideslip groove is formed; Be fixed with some pulleys that can in two perpendicular chutes of runner frame, move respectively on the framework, framework can be directly by bolting to wall, also can add bearing support and be fixed on the ground; One end of connecting rod links to each other with framework by bearing pin (or bolt), the other end then links to each other with runner frame by a pulley that can move in runner frame sideslip groove, hang a spring between the two ends of connecting rod, the other end of spring also is connected on the framework, and connecting rod and spring form angle.
The utility model makes whole blackboard movable up and down weight saving owing to cancelled the balancing weight of balance blackboard weight, and the utility model also have simple in structure, can economical with materials, the steady simple load and unload advantage of moving.
Below in conjunction with the embodiment accompanying drawing, further specify the utility model.
Fig. 1, the utility model structure diagram.
The vertical view of Fig. 2, Fig. 1.
Fig. 3, M-M partial enlarged drawing.
Fig. 4, N-N partial enlarged drawing.
Among the figure, the Folding blackboard that blackboard 6 is made up of three plate faces.Elevating mechanism is by runner frame 2, and the connecting rod of framework 1 and two groups of symmetries, spring assembly constitute.Runner frame 2 is connected in blackboard 6 back sides by two perpendicular chutes and the H type structure that the sideslip groove is formed; Be fixed with 4 pulleys 7 on the framework 1, can in two perpendicular chutes of runner frame 2, move respectively, play the guide effect of blackboard 6 upper and lower motions, simultaneously framework 1 and blackboard 6 be linked together, framework 1 can be directly by bolting to wall, also can add bearing support 5 and be fixed on the ground.One end of connecting rod 3 links to each other with framework 1 by bearing pin (or bolt), the other end then links to each other with runner frame 2 and then with blackboard 6 by a pulley 8 that can move in chute 2 sideslip grooves, hang a cylindrically coiled spring 4 between the two ends of connecting rod 3, the other end of spring 4 also is connected on the framework 1, forms an angle between connecting rod 3 and the spring 4.
When needing blackboard movable up and down 6, only need promote blackboard 6 gently, it just can be along two upper and lower moving of perpendicular chute of runner frame 2, and spring 4 plays the effect of balance blackboard 6 weight and frictional force makes the blackboard can be static in any one position together.
Claims (4)
1, a kind of blackboard movable up and down, by blackboard (6), elevating mechanism and supporting device are formed, it is characterized in that: elevating mechanism is by runner frame (2), the connecting rod (3) of framework (1) and two groups of symmetries, spring (4) constitutes, runner frame (2) is by two perpendicular chutes and the H type structure that the sideslip groove is formed, be connected in blackboard (6) back side, be fixed with some pulleys (7) on the framework (1), can in two perpendicular chutes of runner frame (2), move respectively, one end of connecting rod (3) links to each other with framework (1) by bearing pin or bolt, and the other end then links to each other with runner frame by a pulley (8) that can move in runner frame (2) sideslip groove.Connect spring (4) between the two ends of connecting rod (3), the other end of spring (4) is fixed on the framework (1), forms angle between connecting rod (3) and the spring (4).
2, blackboard movable up and down according to claim 1 is characterized in: framework (1) can be directly by bolting to wall or add bearing support (5) and be fixed on the ground.
3, blackboard movable up and down according to claim 1 and 2 is characterized in: blackboard (6) is the Folding blackboard of three panels.
4, blackboard movable up and down according to claim 3 is characterized in: it is 4 that framework (1) is gone up fixing pulley (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93240683 CN2165003Y (en) | 1993-09-30 | 1993-09-30 | Rise-and-fall blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93240683 CN2165003Y (en) | 1993-09-30 | 1993-09-30 | Rise-and-fall blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2165003Y true CN2165003Y (en) | 1994-05-18 |
Family
ID=33814863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93240683 Expired - Fee Related CN2165003Y (en) | 1993-09-30 | 1993-09-30 | Rise-and-fall blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2165003Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001250A (en) * | 2010-11-11 | 2011-04-06 | 太仓市车中宝休闲用品有限公司 | Evolute elevator mechanism |
| CN104713041A (en) * | 2015-03-27 | 2015-06-17 | 孙忠全 | Folding type lamp support |
| CN105008140A (en) * | 2013-08-09 | 2015-10-28 | 李揆兴 | Automatic blackboard raising/lowering device |
| CN106172686A (en) * | 2016-08-31 | 2016-12-07 | 广东半岛集团有限公司 | A kind of fixing device rolling frame |
| CN109572282A (en) * | 2018-12-14 | 2019-04-05 | 林子策 | Board for writing or drawing with adjustment structure |
-
1993
- 1993-09-30 CN CN 93240683 patent/CN2165003Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001250A (en) * | 2010-11-11 | 2011-04-06 | 太仓市车中宝休闲用品有限公司 | Evolute elevator mechanism |
| CN102001250B (en) * | 2010-11-11 | 2013-05-01 | 太仓市车中宝休闲用品有限公司 | Evolute elevator mechanism |
| CN105008140A (en) * | 2013-08-09 | 2015-10-28 | 李揆兴 | Automatic blackboard raising/lowering device |
| CN104713041A (en) * | 2015-03-27 | 2015-06-17 | 孙忠全 | Folding type lamp support |
| CN106172686A (en) * | 2016-08-31 | 2016-12-07 | 广东半岛集团有限公司 | A kind of fixing device rolling frame |
| CN109572282A (en) * | 2018-12-14 | 2019-04-05 | 林子策 | Board for writing or drawing with adjustment structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |