CN202357736U - Novel and convenient blackboard brush - Google Patents
Novel and convenient blackboard brush Download PDFInfo
- Publication number
- CN202357736U CN202357736U CN2011205125255U CN201120512525U CN202357736U CN 202357736 U CN202357736 U CN 202357736U CN 2011205125255 U CN2011205125255 U CN 2011205125255U CN 201120512525 U CN201120512525 U CN 201120512525U CN 202357736 U CN202357736 U CN 202357736U
- Authority
- CN
- China
- Prior art keywords
- bar
- hand member
- left end
- blackboard
- outer bar
- 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 novel and convenient blackboard brush. The novel and convenient blackboard brush mainly comprises of a left-end outer rod, a right-end outer rod, a middle movable hinge, a left-upper-end fixing hinge, a right-lower-end fixing hinge, a left-end inner rod, a right-end inner rod, bristles and a handle. The left-end outer rod and the right-end outer rod are guide rods provided with dovetail grooves, the left-end inner rod and the right-end inner rod are straight rods with trapezoidal cross sections, and the left-end outer rod and the left-end inner rod as well as the right-end outer rod and the right-end inner rod both are connected in a dovetail matching manner. The left-end outer rod is connected with the left-upper-end fixing hinge of a blackboard and the right-end outer rod is connected with the right-lower-end fixing hinge of the blackboard, and the left-end inner rod is connected with the right-end inner rod by the middle movable hinge. The handle is installed on a middle movable hinge support. The handle roughly moves one stroke along the diagonal line of the blackboard, the bristles arranged on the inner rod and the outer rod play the role in wiping the blackboard, so that the whole blackboard can be wiped cleanly. The blackboard brush is convenient and rapid, is simple in disassembly and low in cost, and time and labor are saved.
Description
Technical field
The utility model relates to a kind of novel portable blackboard brush of the usefulness of imparting knowledge to students.
Background technology
Chalk, blackboard, blackboard brush are present most school instruction common tools.Through these instruments, we pass to the next generation with knowledge, and when transmitting knowledge, the healthy of teacher, classmate in the dust serious harm.Traditional blackboard brush is too little, and the wiping area is too little, and is time-consuming hard, is accompanied by a large amount of chalk dusts during work.Along with the development of society, people begin to pursue environmental protection more, healthy more, time saving and energy saving educational aid.People have also produced many novel products having carried out a large amount of explorations and research aspect this instrument of improvement.The overall view market difficult present situation of finding to erase the board is not still well changed.Its reason be these products more or less exist various problems; Or dust suction and automation have only been paid attention to; But what bring is with high costs, but also will whole black board teaching tool system be changed, and this all is a financial burden that is difficult to bear for most of schools.Generally speaking, it is more harm than good, thereby can not popularize.
Summary of the invention
The utility model purpose is in order to overcome the deficiency of the existing blackboard brush product technology in market, a kind of novel portable blackboard brush to be provided, and is convenient to use, time saving and energy saving, can reduce the blackboard brush of dust.
The technical scheme that the utility model adopted is:
A kind of novel portable blackboard brush of the utility model, mainly by the outer bar of left end, the outer bar of right-hand member, centre movably cut with scissors, in the fixing hinge of left upper end, the fixing hinge of bottom righthand side, left end in bar, the right-hand member bar, bristle and handle form.The outer bar of bar and right-hand member is the guide rod that has dovetail groove outside the said left end, and bar is that cross section is trapezoidal straight-bar in interior bar of left end and the right-hand member, and the outer bar of left end all is to be connected through the mode that dovetail cooperates with interior bar of left end and the outer bar of right-hand member with the interior bar of right-hand member.Simultaneously, the bottom of outer bar of left end and the outer bar dovetail groove of right-hand member all has draw-in groove, and an end of the interior bar of bar and right-hand member is separately installed with a clamp in the left end, and the draw-in groove of the dovetail groove bottom on clamp on the interior bar and the outer bar constitutes stopping means jointly.The left upper end of outer bar of left end and blackboard fixedly is hinged, and the bottom righthand side of outer bar of right-hand member and blackboard fixedly is hinged, and the interior bar of bar and right-hand member movably is hinged through the centre in the left end.Handle installation on middle movable hinged shoe.Bristle is equipped with on the contacted surface of inside and outside bar and blackboard.The outer bar of left end and the outer bar of right-hand member can be respectively done 90 swings of spending around fixing hinge two diagonal angles about blackboard; Bar slides in the bar outside left end in the bar swing outside left end relatively in the left end, and bar slides in the bar outside right-hand member in the bar swing outside right-hand member relatively in the right-hand member.Handle can be clean with whole blackboard eraser to the wiping action of blackboard through the bristle that is contained on the inside and outside bar roughly along stroke of blackboard diagonal motion.
The brush advantage of the utility model: convenient to use, time saving and energy saving, can reduce dust.This utility model is installed, dismounting is simple, cheap.
Description of drawings
Fig. 1 is the structural representation of a kind of novel portable blackboard brush of the utility model.
Fig. 2 is Fig. 1 (cutaway view of A-A).
Fig. 3 is that Fig. 1 left upper end fixed hinge connects sketch map.
Among the figure: 1. left upper end fixed hinge, the 2. outer bar of left end, 3. bar in the left end, 4. bar in the right-hand member, the 5. outer bar of right-hand member, 6. in the middle of movable hinge; 7. handle, 8. blackboard, the 9. fixing strand of bottom righthand side, 10. clamp, 11. bristles, 12. nuts; 13. pad, 14. springs, 15. bearings, 16. bolts, 17
.Draw-in groove.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
Like Fig. 1, shown in Figure 2, a kind of novel portable blackboard brush of the utility model mainly is made up of bar 4, bristle 11 and handle 7 in bar 3, the right-hand member in the fixing hinge of the fixing hinge of the outer bar 2 of left end, the outer bar 5 of right-hand member, middle movable hinge 6, left upper end 1, bottom righthand side 9, the left end.The outer bar 2 of said left end is the guide rods that have dovetail groove with the outer bar 5 of right-hand member, in the left end in bar 3 and the right-hand member bar 4 be that cross section is trapezoidal straight-bar, bar 3 and the outer bar 5 of right-hand member and the interior bar 4 of right-hand member all are that mode through the dovetail cooperation is connected in the outer bar 2 of left end and the left end.Simultaneously, the dovetail groove bottom of outer bar 2 of left end and the outer bar 5 of right-hand member has draw-in groove 17; An end of the interior bar 4 of bar 3 and right-hand member is separately installed with a clamp 10 in the left end, the draw-in groove 17 common formation stopping means of the clamp 10 on the interior bar bottom outer bar dovetail groove.The outer bar 2 of left end is connected with the fixing hinge 1 of the left upper end of blackboard 8, and the outer bar 5 of right-hand member is connected with the fixing hinge 9 of the bottom righthand side of blackboard 8; Bar 3 is connected through middle movable hinge 6 with the interior bar 4 of right-hand member in the left end.Handle installation 7 on the bearing of the movable hinge 6 in centre.Bristle 11 is equipped with on inside and outside bar and blackboard 8 contacted surfaces.The outer bar 2 of left end and the outer bar 5 of right-hand member can be respectively done the swing of 90 degree around fixing hinge two diagonal angles about blackboard 8; Bar 32 li slips relatively of bar outside left end in bar 2 swings outside left end in the left end; Bar 45 li slips relatively of bar outside right-hand member in bar 5 swings outside right-hand member in the right-hand member; Handle 7 can be wiped clean whole blackboard 8 through the wiping action that is contained in the 11 pairs of blackboards 8 of bristle on the inside and outside bar roughly along stroke of blackboard 8 diagonal motion.The motion simple and fast can shorten time of blackboard wiping 8, reduces the harm of dust to teachers and students.
Like Fig. 1, Fig. 2, shown in Figure 3; For realizing its wiping effect better; Installed pad 13, spring 14, bearing 15 respectively additional in fixing hinge 1 of left upper end and the fixing hinge 9 of bottom righthand side, it is more smooth and easy to make that outer bar 2 of left end and the outer bar 5 of right-hand member get up in swing, simultaneously adjusting nut 12 and bolt 16; Can adjust the tightness that contacts of whole brush body and 8 on blackboard through spring 14, to reach wiping effect best.From left end outside, skid off the bar 2 fully when preventing in the left end that bar 3 slides in the bar 2 outside left end; Outside right-hand member, skid off the bar 5 fully when bar 4 slides in the bar 5 outside right-hand member in the right-hand member, the clamp 10 that has bottom the bar dovetail groove on draw-in groove 17 and the interior bar has outside constituted stopping means jointly.When brush body is not worked, in the left end bar 3 straight down, bar 4 levels in the right-hand member are movably cut with scissors 6 and are in the lower left corner of blackboard 8, thereby just can not influence writing of teacher's blackboard 8, and are also more attractive in appearance.For long blackboard 8, two similar blackboard brush devices can be installed, thereby reach the purpose of wiping clean monoblock blackboard 8.
Claims (3)
1. novel portable blackboard brush; Mainly form by bar (4), bristle (11) and handle (7) in bar (3), the right-hand member in the outer bar (2) of left end, the outer bar (5) of right-hand member, middle movable hinge (6), the fixing hinge of left upper end (1), the fixing hinge of bottom righthand side (9), the left end; It is characterized in that: outer bar (2) of said left end and the outer bar (5) of right-hand member are the guide rods that has dovetail groove; Bar (4) is that cross section is trapezoidal straight-bar in interior bar (3) of left end and the right-hand member, and the outer bar (2) of left end all is to be connected through the mode that dovetail cooperates with interior bar (3) of left end and the outer bar (5) of right-hand member with the interior bar (4) of right-hand member; Simultaneously, the dovetail groove bottom of outer bar (2) of left end and the outer bar (5) of right-hand member has draw-in groove (17); An end of the interior bar (4) of bar (3) and right-hand member is separately installed with a clamp (10) in the left end, and the clamp on the interior bar (10) constitutes stopping means jointly with the draw-in groove (17) of outer bar dovetail groove bottom; The outer bar (2) of left end is connected with the fixing hinge of left upper end (1) of blackboard (8), and the outer bar (5) of right-hand member is connected with the fixing hinge of bottom righthand side (9) of blackboard (8); Bar (3) is connected through middle movable hinge (6) with the interior bar (4) of right-hand member in the left end; Movably cut with scissors handle installation (7) on the bearing of (6) in the centre; Bristle (11) is equipped with on the contacted surface of inside and outside bar and blackboard (8).
2. a kind of novel portable blackboard brush according to claim 1 is characterized in that: the outer bar (2) of left end and the outer bar (5) of right-hand member can be respectively done 90 swings of spending around fixing hinge two diagonal angles about blackboard (8); In the left end bar (3) left end outside in bar (2) swing left end outside bar (2) lining slide relatively, the interior bar (4) of right-hand member when bar (5) is swung outside right-hand member outside right-hand member bar (5) lining slide relatively.
3. a kind of novel portable blackboard brush according to claim 1 is characterized in that: installed pad (13), spring (14), bearing (15) respectively additional in fixing hinge of left upper end (1) and the fixing hinge of bottom righthand side (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205125255U CN202357736U (en) | 2011-12-12 | 2011-12-12 | Novel and convenient blackboard brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205125255U CN202357736U (en) | 2011-12-12 | 2011-12-12 | Novel and convenient blackboard brush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202357736U true CN202357736U (en) | 2012-08-01 |
Family
ID=46568946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205125255U Expired - Fee Related CN202357736U (en) | 2011-12-12 | 2011-12-12 | Novel and convenient blackboard brush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202357736U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104960734A (en) * | 2015-06-17 | 2015-10-07 | 重庆市瑞轩豪邦新型建材有限公司 | Brick machine supporting plate |
| CN107054833A (en) * | 2016-12-19 | 2017-08-18 | 广西宏发重工机械有限公司 | Brick pallets |
-
2011
- 2011-12-12 CN CN2011205125255U patent/CN202357736U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104960734A (en) * | 2015-06-17 | 2015-10-07 | 重庆市瑞轩豪邦新型建材有限公司 | Brick machine supporting plate |
| CN107054833A (en) * | 2016-12-19 | 2017-08-18 | 广西宏发重工机械有限公司 | Brick pallets |
| CN107054833B (en) * | 2016-12-19 | 2018-12-28 | 广西宏发重工机械有限公司 | Brick pallets |
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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: 20120801 Termination date: 20121212 |