CN204109606U - A kind of multi-function chalk casing - Google Patents

Abstract

The utility model provides a kind of multi-function chalk casing, belongs to teaching aid technical field.It solve the inconvenience of existing chalk sleeve grip and draw the problem of parallel lines.This multi-function chalk casing comprises sleeve and dead ring, sleeve is provided with fluting one and fluting two, dead ring clamping fluting one, sleeve is connected with the public face of magic tape, and be provided with magic tape generatrix at sleeve outer wall, the public face of magic tape can clamp fluting two with magic tape generatrix, sleeve lining is provided with groove, also comprise slide block and slide block can slide up and down along recess axis, also comprise and hold block, hold block to be screwed on sleeve, and hold block and be provided with arcwall face one, hold block side one and hold depression block side two being respectively equipped with raised line and mating with raised line.Fix chalk with dead ring, forefinger and middle finger are placed on arcwall face one, hold block, thumb is placed on fluting two and can writes, and maybe finger is stretched into fluting two, props up slide block adjustment chalk length with finger; Several are held block assembling and can mark parallel straight line.

Description

A kind of multi-function chalk casing

Technical field

The utility model belongs to teaching aid technical field, relates to a kind of multi-function chalk casing.

Background technology

Chalk is important teaching aid, has very long use history.Along with development and the progress of science and technology, multimedia teaching starts constantly universal coming.But in multimedia teaching with use between chalk writing and there is inconvenience, namely finger can be polluted by chalk powder after writing on the blackboard, re-use keyboard and keyboard and mouse then can be made dirty by mouse, therefore existing a kind of chalk sleeve for being embedded chalk.

Such as, Chinese patent application [application number: 201220733560.4; Publication number 202986465U], disclose a kind of chalk sleeve, comprise sleeve, it is characterized in that, be provided with the cardan shaft for advancing chalk to move up near bottom in described sleeve, described cardan shaft is provided with external screw thread, and described sleeve bottom end inwall is provided with internal thread, and the external screw thread on described cardan shaft matches with the internal thread on described sleeve.

And for example, Chinese patent application [application number: 201220633003.5; Publication number 203032153U], disclose a kind of chalk sleeve, it is characterized in that: described chalk sleeve comprises: cylindrical shell, anti-skid design and locking bayonet socket; Wherein: cylindrical shell is hollow cylinder, lower ending opening, and opening part is provided with locking bayonet socket; The outer wall of cylindrical shell is provided with anti-skid design; Locking bayonet socket adopts rotational lock structure.

But can chalk be touched when existing chalk sleeve adjusts chalk in the same old way, and due to chalk sleeve usually thick than chalk, be therefore inconvenient to grip, and in English teaching, often need more standardized parallel lines for writing especially.

Summary of the invention

The purpose of this utility model is for the above-mentioned problems in the prior art, provide a kind of structure simple, also can not encounter chalk when regulating, conveniently grip and conveniently can combine and mark the multi-function chalk casing of parallel lines.

The purpose of this utility model realizes by following technical proposal: a kind of multi-function chalk casing, it is characterized in that: comprise cylindrical sleeve and annular dead ring, described sleeve has sleeve lining and sleeve outer wall and sleeve outer wall is provided with external screw thread, and sleeve two ends are respectively equipped with bar shaped fluting one and bar shaped fluting two, described dead ring to be set on sleeve and clamping fluting one, described sleeve is connected with the public face of strip magic tape, and be provided with magic tape generatrix at sleeve outer wall and magic tape public face relative position, the public face of described magic tape can be pasted mutually with magic tape generatrix and clamp fluting two, described sleeve is provided with annular groove along sleeve lining, described recess axis and sleeve lining dead in line, also comprise cylindrical slider, described slide block to be placed in groove and to lean with groove, and can slide up and down along recess axis, what also comprise band internal thread manhole holds block, described block of holding to be coordinated with the external screw thread of sleeve outer wall by the internal thread of through hole and is screwed on described sleeve, and described block of holding is provided with the arcwall face one of symmetrical two indents of sleeve, described block of holding also has and holds block side one so that sleeve is symmetrical and holds block side two, described block side one of holding block side two is respectively equipped with the strip raised line parallel with through-bore axis direction and the strip that mates with raised line caves in holding.

During use, chalk is loaded on fluting one, be fixed with dead ring clamping fluting a pair chalk afterwards, block is held owing to having, therefore forefinger and middle finger are placed on two arcwall faces one respectively, block is held in the centre of the palm, thumb can be placed on sleeve and slot on two one end, be similar to the posture of extruding syringe, therefore the problem of the excessive finger grip inconvenience of existing chalk sleeve is avoided, or finger is stretched in fluting two, clamping fluting two is mutually pasted thus clamping finger with the public face of magic tape and magic tape generatrix, when needs regulate chalk length, slide block is propped up upwardly with finger, allow slide block prop up chalk thus adjust the length that chalk stretches out sleeve, several are held block to coordinate with raised line assemble with depression respectively, assembled defensive position and can conveniently mark the straight line be parallel to each other by holding block.

In above-mentioned a kind of multi-function chalk casing, described depression is provided with gear edge close to one end of arcwall face one.

Gear is set along better positioning convex strip and depression.

In above-mentioned a kind of multi-function chalk casing, described slide block has the arcwall face two of indent near one end of fluting two.

With coordinate finger against, prevent finger to be under pressure excessive, or the flexible materials such as sponge can be set cover on arcwall face two.

In above-mentioned a kind of multi-function chalk casing, described block of holding has and vertically with arcwall face one respectively holds block end face and hold block bottom surface, and described holding block end face and hold on block bottom surface is respectively equipped with anti-skid rack.

After finishing using, chalk sleeve is placed in lecture, holds block and then contact with lecture, anti-skid rack is set and prevents the relative lecture of chalk sleeve from sliding.

In above-mentioned a kind of multi-function chalk casing, described sleeve is respectively equipped with two with the fluting one of sleeve lining axisymmetrical and fluting two.

Arrange symmetrical fluting one to be conducive to loading chalk with fluting two.

In above-mentioned a kind of multi-function chalk casing, described dead ring is that elastomeric material is made.

Compared with prior art, the utility model tool has the following advantages:

Chalk is loaded on fluting one, be fixed with dead ring clamping fluting a pair chalk afterwards, block is held owing to having, therefore forefinger and middle finger are placed on two arcwall faces one respectively, block is held in the centre of the palm, thumb can be placed on sleeve and slot on two one end, be similar to the posture of extruding syringe, therefore the problem of the excessive finger grip inconvenience of existing chalk sleeve is avoided, or finger is stretched in fluting two, clamping fluting two is mutually pasted thus clamping finger with the public face of magic tape and magic tape generatrix, when needs regulate chalk length, slide block is propped up upwardly with finger, allow slide block prop up chalk thus adjust the length that chalk stretches out sleeve, several are held block to coordinate with raised line assemble with depression respectively, assembled defensive position and can conveniently mark the straight line be parallel to each other by holding block.

Accompanying drawing explanation

Fig. 1 is structural representation after the combination of some chalk sleeves.

Fig. 2 is the main TV structure schematic diagram of this chalk sleeve.

Fig. 3 is this chalk sleeve side-looking structural representation.

Fig. 4 be this chalk sleeve hold block phantom.

Fig. 5 is this chalk sleeve partial sectional view.

In figure,

1, sleeve; 11, sleeve lining; 12, sleeve outer wall; 13, one is slotted; 14, two are slotted; 15, the public face of magic tape; 16, magic tape generatrix; 17, groove;

2, dead ring;

3, slide block; 31, arcwall face two;

4, block is held; 41, through hole; 42, arcwall face one; 43, block side one is held; 44, block side two is held; 45, raised line; 46, cave in; 47, edge is kept off; 48, block end face is held; 49, block bottom surface is held; 50, anti-skid rack;

5, chalk;

6, point.

Detailed description of the invention

Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.

As Figure 1-5, a kind of multi-function chalk casing of the utility model, comprise cylindrical sleeve 1 and annular dead ring 2, sleeve 1 has sleeve lining 11 and sleeve outer wall 12 and sleeve outer wall 12 is provided with external screw thread, and sleeve 1 two ends are respectively equipped with bar shaped fluting 1 and bar shaped fluting 2 14, dead ring 2 to be set on sleeve 1 and clamping fluting 1, sleeve 1 is connected with the public face 15 of strip magic tape, and be provided with magic tape generatrix 16 at sleeve outer wall 12 and magic tape public face 15 relative position, the public face 15 of magic tape can be pasted with magic tape generatrix 16 phase and clamp fluting 2 14, sleeve 1 is provided with annular groove 17 along sleeve lining 11, groove 17 axis and sleeve lining 11 dead in line, also comprise cylindrical slider 3, slide block 3 to be placed in groove 17 and to lean with groove 17, and can slide up and down along groove 17 axis, what also comprise band internal thread manhole 41 holds block 4, hold the internal thread of block 4 by through hole 41 to coordinate with the external screw thread of sleeve outer wall 12 and be screwed on sleeve 1, and hold block 4 and be provided with the arcwall face 1 of symmetrical two indents of sleeve 1, hold block 4 also to have and hold block side 1 so that sleeve 1 is symmetrical and holds block side 2 44, hold block side 1 and block side 2 44 is respectively equipped with the strip raised line 45 parallel with through hole 41 axis direction and the strip that mates with raised line 45 caves in 46 with holding.

Further, depression 46 is provided with gear along 47 close to one end of arcwall face 1.Slide block 3 has the arcwall face 2 31 of indent near one end of fluting 2 14.Hold block 4 to have and vertically with arcwall face 1 respectively hold block end face 48 and hold block bottom surface 49, and hold block end face 48 and hold on block bottom surface 49 and be respectively equipped with anti-skid rack 50.Sleeve 1 is respectively equipped with two with the fluting 1 of sleeve lining 11 axisymmetrical and fluting 2 14.Dead ring 2 is made for elastomeric material.

During use, chalk 5 is loaded on fluting 1, clamp fluting one 13 pairs of chalks 5 with dead ring 2 to be afterwards fixed, block 4 is held owing to having, therefore forefinger and middle finger are placed on two arcwall faces 1 respectively, block 4 is held in the centre of the palm, thumb can be placed on sleeve 1 and slot on 2 14 one end, be similar to the posture of extruding syringe, therefore the problem of the excessive finger grip inconvenience of existing chalk sleeve is avoided, or finger is stretched in fluting 2 14, mutually clamping fluting 2 14 is pasted thus clamping finger 6 with the public face 15 of magic tape and magic tape generatrix 16, when needs regulate chalk 5 length, slide block 3 is propped up upwardly with finger 6, allow slide block 3 prop up chalk 5 thus adjust the length that chalk 5 stretches out sleeve 1, several are held block 4 to coordinate with raised line 45 assemble with depression 46 respectively, assembled defensive position and can conveniently mark the straight line be parallel to each other by holding block 4.

Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.

Although more employ sleeve 1, sleeve lining 11, sleeve outer wall 12, fluting 1, fluting 2 14, magic tape public face 15, magic tape generatrix 16, groove 17, dead ring 2, slide block 3, arcwall face 2 31 herein, hold block 4, through hole 41, arcwall face 1, hold block side 1, hold block side 2 44, raised line 45, depression 46, keep off along 47, hold block end face 48, hold block bottom surface 49, anti-skid rack 50, chalk 5, the term such as finger 6, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.

Claims (6)

1. a multi-function chalk casing, it is characterized in that: comprise cylindrical sleeve (1) and annular dead ring (2), described sleeve (1) has sleeve lining (11) and sleeve outer wall (12) and sleeve outer wall (12) is provided with external screw thread, and sleeve (1) two ends are respectively equipped with bar shaped fluting one (13) and bar shaped fluting two (14), described dead ring (2) is set in sleeve (1) and goes up and clamping fluting one (13), described sleeve (1) is connected with the public face (15) of strip magic tape, and be provided with magic tape generatrix (16) at public face (15) relative position of sleeve outer wall (12) and magic tape, the public face (15) of described magic tape can be pasted mutually with magic tape generatrix (16) and clamp fluting two (14), described sleeve (1) is provided with annular groove (17) along sleeve lining (11), described groove (17) axis and sleeve lining (11) dead in line, also comprise cylindrical slider (3), described slide block (3) to be placed in groove (17) and to lean with groove (17), and can slide up and down along groove (17) axis, what also comprise band internal thread manhole (41) holds block (4), the described internal thread of block (4) by through hole (41) of holding coordinates with the external screw thread of sleeve outer wall (12) and is screwed on described sleeve (1), and described block (4) of holding is provided with the arcwall face one (42) of symmetrical two indents of sleeve (1), described block (4) of holding also has and holds block side one (43) so that sleeve (1) is symmetrical and holds block side two (44), described block side one (43) of holding block side two (44) is respectively equipped with the strip raised line (45) parallel with through hole (41) axis direction and the strip that mates with raised line (45) caves in (46) with holding.

2. a kind of multi-function chalk casing according to claim 1, is characterized in that: described depression (46) is provided with gear along (47) close to one end of arcwall face one (42).

3. a kind of multi-function chalk casing according to claim 2, is characterized in that: described slide block (3) has the arcwall face two (31) of indent near one end of fluting two (14).

4. a kind of multi-function chalk casing according to claim 3, it is characterized in that: described block (4) of holding has and vertically with arcwall face one (42) respectively holds block end face (48) and hold block bottom surface (49), and described holding block end face (48) and hold on block bottom surface (49) is respectively equipped with anti-skid rack (50).

5. a kind of multi-function chalk casing according to claim 4, is characterized in that: described sleeve (1) is respectively equipped with two with the fluting one (13) of sleeve lining (11) axisymmetrical and fluting two (14).

6. a kind of multi-function chalk casing according to claim 5, is characterized in that: described dead ring (2) is made for elastomeric material.