CN205272956U - Plug -type blackboard with combination pulley structure - Google Patents
Plug -type blackboard with combination pulley structure Download PDFInfo
- Publication number
- CN205272956U CN205272956U CN201521043062.7U CN201521043062U CN205272956U CN 205272956 U CN205272956 U CN 205272956U CN 201521043062 U CN201521043062 U CN 201521043062U CN 205272956 U CN205272956 U CN 205272956U
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- multifunction board
- sheave
- push
- pull blackboard
- multifunction
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Abstract
The utility model relates to a plug -type blackboard with combination pulley structure, this blackboard includes: first and second multifunction boards, third multifunction board, the first and second combination pulley structure, go up sliding tray and sliding tray down, wherein, first combination pulley structure includes first top sheave and first pulley, first go up pulley mounting the top of first multifunction board or near the top on the surface, leave first space between the top of first top sheave and first multifunction board, first pulley mounting in the bottom of first multifunction board or near the bottom on the surface, pulley structure is the same or symmetrical with first combination pulley structure in the second combination, third multifunction board fixed mounting is between first multifunction board and second multifunction board, upward install in the sliding tray and to pass the bracing piece in first space and second space. The utility model provides a pulley of plug -type blackboard adoption top and bottom bears the structure of blackboard weight jointly, therefore the extension of the life of blackboard.
Description
Technical field
This utility model relates to a kind of teaching aid, is specifically related to a kind of Push-pull blackboard with Combined pulley structure.
Background technology
Existing Push-pull blackboard by installing pulley with top bottom blackboard, and when people promotes blackboard, the pulley of bottom and the pulley at top are along slide, owing to the pulley of bottom subjects the weight of blackboard, is therefore easy to damage; And the blackboard of this structure is in use for some time due to reasons such as integrally-built deformation, sinkings, causes that the pulley at top declines with the fitness of chute.
Utility model content
In order to solve above-mentioned technical problem, the utility model proposes a kind of Push-pull blackboard with Combined pulley structure.
A kind of Push-pull blackboard with Combined pulley structure that the utility model proposes, this Push-pull blackboard includes: the first multifunction board, second multifunction board, 3rd multifunction board, first Combined pulley structure, second Combined pulley structure, upper sliding tray and lower slider groove, wherein, first Combined pulley structure includes the first top sheave and the first lower sheave, the central shaft two ends of the first top sheave are fixed on the top of the first multifunction board or on the surface at top by head rod, first top sheave, the first space is left between the top of head rod and the first multifunction board, first lower sheave is arranged on the bottom of the first multifunction board or on the surface of bottom, second Combined pulley structure includes the second top sheave and the second lower sheave, the central shaft two ends of the second top sheave are fixed on the top of the second multifunction board or on the surface at top by the second connecting rod, leaving Second gap between second top sheave, the second connecting rod and the top of the second multifunction board, the second lower sheave is arranged on the bottom of the second multifunction board or on the surface of bottom, 3rd multifunction board is fixedly mounted between the first multifunction board and the second multifunction board, upper sliding tray is provided with the support bar that can pass described first space and Second gap, the upper surface of support bar is provided for the first top sheave and the first rail plate of the second top sheave slip, lower slider groove is provided for the first lower sheave and the second rail plate of the second lower sheave slip.
Preferably, this Push-pull blackboard also includes the baffle plate or the blend stop that are arranged on these blackboard both sides.
Preferably, this Push-pull blackboard be additionally included in lower slider groove arrange rubber block.
Preferably, this Push-pull blackboard is additionally included in the first multifunction board and the second multifunction board contacts the plastic glue strip that side installs.
Preferably, this lower sheave is double pulley, and the second rail plate is double guide rail.
Preferably, described top sheave and lower sheave are the roller with self-adjusting balance function.
Preferably, the part that each pulley contacts with rail plate covers rubber layer.
Preferably, above-mentioned multifunction board is with the blackboard of chalk-writing, the blank write with free ink pen or projection plate.
Preferably, this projection plate is electronic whiteboard.
The beneficial effects of the utility model: the weight of blackboard is born at the Push-pull blackboard employing top that the utility model proposes and the pulley of bottom and fit structure thereof jointly, therefore extends the service life of blackboard; The chute slided due to top sheave subjects overall moiety by weight, therefore, it is possible to keep good pulley and chute fitness.
Accompanying drawing explanation
Fig. 1 is the structural representation of Push-pull blackboard of the present utility model.
Fig. 2 is the schematic diagram after the combination of Push-pull blackboard of the present utility model.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, this utility model is further described. But those skilled in the art know, this utility model is not limited to accompanying drawing and following example. The statement of " first ", " second ", " the 3rd " used before technical term in literary composition is intended merely to distinguishing characteristic, there is no concrete meaning.
A kind of Push-pull blackboard with Combined pulley structure that the utility model proposes is as illustrated in fig. 1 and 2. This Push-pull blackboard includes: first multifunction board the 11, second multifunction board the 12, the 3rd multifunction board the 4, first Combined pulley structure the 21, second Combined pulley structure 22, upper sliding tray 31 and lower slider groove 32.
Wherein, first Combined pulley structure 21 includes the first top sheave 211 and the first lower sheave 212, the central shaft two ends of the first top sheave are fixed on the top of the first multifunction board or on the surface at top by head rod, leave the first space between the first top sheave, head rod and the top of the first multifunction board; First lower sheave is arranged on the bottom of the first multifunction board or on the surface of bottom.
Second Combined pulley structure 22 includes the second top sheave 221 and the second lower sheave 222, the central shaft two ends of the second top sheave are fixed on the top of the second multifunction board or on the surface at top by the second connecting rod, leave Second gap between the second top sheave, the second connecting rod and the top of the second multifunction board; Second lower sheave is arranged on the bottom of the second multifunction board or on the surface of bottom.
3rd multifunction board 4 fixedly mounts. 3rd multifunction board can for writing with blackboard or blank, it is also possible to for projection plate, this projection plate can be electronic whiteboard. The size of first, second, third multifunction board shown in Fig. 1 and Fig. 2 only schematically shows, the size of the 3rd multifunction board is determined by actually used product appearance size, the size of the first and second multifunction boards determines according to occasion used, as long as the 3rd multifunction board can be shown when the first and second multifunction boards slide into distalmost end completely, slide into energy completely obscured 3rd multifunction board during most proximal end. In order to attractive in appearance, the first multifunction board and the second multifunction board size are identical.
Being provided with support bar 311 in upper sliding tray, support bar is provided with the first rail plate, during installation, support bar can slide through the first space and Second gap, the first top sheave and the second top sheave on the first rail plate of support bar. Wherein go up the load-bearing of sliding tray, support bar, first, second connecting rod and first, second top sheave and the load-bearing of intensity and lower slider groove and first, second lower sheave and intensity can support the first multifunction board and the weight of the second multifunction board. Being provided with the second rail plate in lower slider groove, during installation, the first lower sheave and the second lower sheave are contained in lower slider groove, and can slide on the second rail plate. When the first multifunction board and the second multifunction board all slide into distalmost end, the first multifunction board is positioned at the left side of the 3rd multifunction board, and the second multifunction board is positioned at the right side of the 3rd multifunction board; When the first multifunction board and the second multifunction board slide into most proximal end, the first multifunction board and the second multifunction board side by side and cover the 3rd multifunction board.
Departing from sliding tray to prevent the first multifunction board or the second multifunction board from sliding too quickly, this Push-pull blackboard can also include the baffle plate or the blend stop that are arranged on blackboard both sides.
Rubber block can also be set in lower slider groove, it is prevented that the first multifunction board and the second multifunction board bump against. Or the first multifunction board and the second multifunction board side that contacts is respectively mounted plastic glue strip, play cushioning effect when the first and second multifunction boards contacts.
The stability of multifunction board during in order to strengthen slip, lower sheave can be double pulley, and correspondingly, the second rail plate is double guide rail.
It addition, in order to the sheave with self-adjusting balance function selected by the matching degree improving pulley and guide rail, top sheave and lower sheave.
In order to reduce pulley noise on rail plate, and increase abrasion resistance, it is possible to the part contacted with rail plate by pulley covers rubber layer.
Above-mentioned first and/or second multifunction board can be with the blackboard of chalk-writing, the blank etc. write with free ink pen, it is also possible to for projection plate.
Above-mentioned first top sheave and/or the second top sheave can be one or more, if be one, pulley is positioned at the centre position of multifunction board; If be multiple, setting can be evenly distributed along glide direction, it is possible to be placed on first or second multifunction board both ends in glide direction. First lower sheave and/or the second lower sheave are also such. Fig. 1 and 2 only illustrating, the first top sheave, the second top sheave, the first lower sheave and the second lower sheave are respectively two, and is positioned at the schematic diagram of first or second multifunction board end in glide direction.
Above, embodiment of the present utility model is illustrated. But, this utility model is not limited to above-mentioned embodiment. All within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.
Claims (9)
1. a Push-pull blackboard with Combined pulley structure, it is characterized in that, this Push-pull blackboard includes: the first multifunction board, second multifunction board, 3rd multifunction board, first Combined pulley structure, second Combined pulley structure, upper sliding tray and lower slider groove, wherein, first Combined pulley structure includes the first top sheave and the first lower sheave, the central shaft two ends of the first top sheave are fixed on the top of the first multifunction board or on the surface at top by head rod, first top sheave, the first space is left between the top of head rod and the first multifunction board, first lower sheave is arranged on the bottom of the first multifunction board or on the surface of bottom, second Combined pulley structure includes the second top sheave and the second lower sheave, the central shaft two ends of the second top sheave are fixed on the top of the second multifunction board or on the surface at top by the second connecting rod, leaving Second gap between second top sheave, the second connecting rod and the top of the second multifunction board, the second lower sheave is arranged on the bottom of the second multifunction board or on the surface of bottom, 3rd multifunction board is fixedly mounted between the first multifunction board and the second multifunction board, upper sliding tray is provided with the support bar that can pass described first space and Second gap, the upper surface of support bar is provided for the first top sheave and the first rail plate of the second top sheave slip, lower slider groove is provided for the first lower sheave and the second rail plate of the second lower sheave slip.
2. Push-pull blackboard according to claim 1, it is characterised in that this Push-pull blackboard also includes the baffle plate or the blend stop that are arranged on these blackboard both sides.
3. Push-pull blackboard according to claim 1, it is characterised in that this Push-pull blackboard be additionally included in lower slider groove arrange rubber block.
4. Push-pull blackboard according to claim 1, it is characterised in that this Push-pull blackboard is additionally included in the first multifunction board and the second multifunction board contacts plastic glue strip that side installs.
5. Push-pull blackboard according to claim 1, it is characterised in that this lower sheave is double pulley, the second rail plate is double guide rail.
6. Push-pull blackboard according to claim 1, it is characterised in that described top sheave and lower sheave are the sheave with self-adjusting balance function.
7. Push-pull blackboard according to claim 1, it is characterised in that the part that each pulley contacts with rail plate covers rubber layer.
8. Push-pull blackboard according to claim 1, it is characterised in that above-mentioned first, second and/or the 3rd multifunction board be with the blackboard of chalk-writing, the blank write with free ink pen or projection plate.
9. Push-pull blackboard according to claim 8, it is characterised in that this projection plate is electronic whiteboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521043062.7U CN205272956U (en) | 2015-12-15 | 2015-12-15 | Plug -type blackboard with combination pulley structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521043062.7U CN205272956U (en) | 2015-12-15 | 2015-12-15 | Plug -type blackboard with combination pulley structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205272956U true CN205272956U (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521043062.7U Active CN205272956U (en) | 2015-12-15 | 2015-12-15 | Plug -type blackboard with combination pulley structure |
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| Country | Link |
|---|---|
| CN (1) | CN205272956U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108973439A (en) * | 2018-06-29 | 2018-12-11 | 许昌市建安区椹涧乡第二初级中学 | A kind of blackboard that using effect is good |
-
2015
- 2015-12-15 CN CN201521043062.7U patent/CN205272956U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108973439A (en) * | 2018-06-29 | 2018-12-11 | 许昌市建安区椹涧乡第二初级中学 | A kind of blackboard that using effect is good |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |