CN209534558U - A kind of chalk sleeve - Google Patents
A kind of chalk sleeve Download PDFInfo
- Publication number
- CN209534558U CN209534558U CN201822196282.3U CN201822196282U CN209534558U CN 209534558 U CN209534558 U CN 209534558U CN 201822196282 U CN201822196282 U CN 201822196282U CN 209534558 U CN209534558 U CN 209534558U
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- CN
- China
- Prior art keywords
- turnbarrel
- chalk
- sleeve
- wall
- lifting platform
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Abstract
The utility model provides a kind of chalk sleeve, belongs to teaching aid technical field, comprising: turnbarrel, lifting platform, fluctuating orbit, outer sleeve and elastic collet；Turnbarrel for placing chalk, and is provided with helicitic texture on inner wall；Lifting platform, setting are threadedly engaged in turnbarrel, and with turnbarrel, are used to support chalk bottom end；Fluctuating orbit, first end protrude into turnbarrel, and are clamped with lifting platform and are slidably matched along the axis direction of turnbarrel；Outer sleeve is set in outside turnbarrel, and one end is connect with turnbarrel, and the other end is fixedly connected with the second end of fluctuating orbit；Elastic collet is equipped with the cavity being connected to turnbarrel, and one end is connect with outer sleeve, and the other end is used to clamp the upper end of chalk.The utility model provides a kind of chalk sleeve, can not only avoid chalk ash pollution finger, but also the waste that can be reduced chalk improves the utilization rate of chalk.
Description
Technical field
The utility model belongs to teaching aid technical field, is to be related to a kind of chalk sleeve more specifically.
Background technique
Existing chalk is usually a thick, thin truncated cone-shaped, is added by calcium sulfate, calcium carbonate and a small amount of calcium chloride
Drying forms after water stirs into paste, injection molding.Since chalk is hard and crisp, when writing, can be easy to fracture.Remaining chalk simultaneously
Part is difficult to pinch and abandon, and causes the waste of chalk.
Utility model content
The purpose of this utility model is to provide a kind of chalk sleeves, it is intended to solve finger and directly pinch chalk-writing frangibility
With fracture after part pinched because being difficult to due to be wasted the technical issues of.
In order to achieve the above purposes, the technical solution adopted by the utility model is: provides a kind of chalk sleeve, comprising: rotary sleeve
Cylinder, for placing chalk, and is provided with helicitic texture on inner wall；Lifting platform, be arranged in the turnbarrel, and with the rotation
Rotaring sleeve is threadedly engaged, and is used to support chalk bottom end；Fluctuating orbit, first end protrude into the turnbarrel, and with the liter
Drop decometer connects and is slidably matched along the axis direction of the turnbarrel；Outer sleeve is set in outside the turnbarrel, and one end
It is connect with the turnbarrel, the other end is fixedly connected with the second end of the fluctuating orbit.Elastic collet is equipped with and the rotation
The cavity of rotaring sleeve connection, and one end is connect with the outer sleeve, the other end is used to clamp the upper end of chalk.
Further, the fluctuating orbit is two, and the side of the lifting platform is corresponding with two fluctuating orbits
There are two go up and down sliding slot for setting on position.
Further, lifting type chalk sleeve further include: rotation is turned round, and is arranged in the turnbarrel far from the elastic collet
End.
Further, lifting type chalk sleeve further include: annular recess is arranged on the inner wall of the outer sleeve；It is cyclic annular convex
Edge is arranged on the outer wall of the turnbarrel, and is slidably matched with the annular recess.
Further, lifting type chalk sleeve further include: the cell wall of the annular recess is uniformly arranged in several sawtooth
On, and teeth directional is identical as the hand of spiral of the turnbarrel；Anti-rotation teeth are arranged on the collar flange, and described anti-
The cusp for turning teeth is located in the tooth socket that adjacent two sawtooth are constituted, for prevent the collar flange to the rotation
The opposite direction sliding of rotaring sleeve spiral.
Further, lifting type chalk sleeve further include: fastening sleeve is set in outside the elastic collet, and front inner wall
It is abutted with the elastic collet, for clamping the elastic collet.
Further, the elastic collet includes: loop connecting head, is clamped with the turnbarrel；Several elasticity hook
Pawl is uniformly arranged in the surrounding of the head of the loop connecting and abuts with the front inner wall of the fastening sleeve, for pressing from both sides
The firmly upper end of chalk.
Further, the inner wall of the fastening sleeve is equipped with convex for abutting with the front inner wall of the fastening sleeve
It rises.
Further, the outer wall of the outer sleeve is equipped with non slip surface.
A kind of beneficial effect of chalk sleeve provided by the utility model is: compared with prior art, the utility model one
Kind chalk sleeve, wherein one end of chalk is put into turnbarrel and end is fixed on lifting platform, the other end quilt of chalk
Elastic collet is fixed, and when using chalk, finger pinches outer sleeve and can write, and contact chalk is not needed, to effectively prevent
The reasons such as the position that finger is affectedly bashful is improper or force is overweight make chalk fracture, and finger can also be prevented to be infected with chalk dust；
Since lifting platform and turnbarrel are threadedly engaged, and lifting platform and fluctuating orbit are clamped, and rotation is rotated when fixing outer sleeve
Sleeve, lifting platform will be moved up and down along fluctuating orbit, so that the chalk on lifting platform be driven to move up and down, work as elastic collet
After the chalk end of upper clamping is used up, turnbarrel can be rotated, lifting platform is moved into a distance to elastic collet, into
And the chalk in turnbarrel is released into certain length, to meet the needs for continuing to write, until remaining chalk end can not be by
Elastic collet clamping, then new chalk is re-replaced, to reduce the waste to chalk end, improve the utilization rate of chalk.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of schematic diagram of internal structure of chalk sleeve provided by the embodiment of the utility model；
Fig. 2 is a kind of longitudinal sectional view of chalk sleeve provided by the embodiment of the utility model；
Fig. 3 is a kind of assembling schematic diagram of chalk sleeve provided by the embodiment of the utility model；
Fig. 4 is that outer sleeve provided by the embodiment of the utility model and elasticity hook pawl assembling schematic diagram.
In figure: 1, turnbarrel；11, rotation is turned round；12, collar flange；121, anti-rotation teeth；2, lifting platform；21, lifting is slided
Slot；3, fluctuating orbit；4, elastic collet；41, loop connecting head；42, elasticity hooks pawl；5, outer sleeve；51, annular recess；511,
Sawtooth；6, fastening sleeve；61, raised.
Specific embodiment
In order to which technical problem to be solved in the utility model, technical solution and beneficial effect is more clearly understood, with
Lower combination accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein
It applies example to be only used to explain the utility model, is not used to limit the utility model.
Also referring to Fig. 1 and Fig. 4, now a kind of chalk sleeve provided by the utility model is illustrated.A kind of powder
The pen cap, comprising: turnbarrel 1, lifting platform 2, fluctuating orbit 3 and elastic collet 4；Turnbarrel 1 is for placing chalk, and inner wall
On be provided with helicitic texture；The setting of lifting platform 2 is threadedly engaged in the turnbarrel 1, and with the turnbarrel 1, is used for
Support chalk bottom end；Fluctuating orbit 3, first end protrude into the turnbarrel 1, and with the lifting platform 2 clamping and along described
The axis direction of turnbarrel 2 is slidably matched；Outer sleeve 5 is set in outside the turnbarrel, and one end and the turnbarrel
1 connection, the other end are fixedly connected with the second end of the fluctuating orbit 3.Elastic collet 4 is equipped with and is connected to the turnbarrel 1
Cavity, and one end is connect with the outer sleeve 5, and the other end is used to clamp the upper end of chalk.
A kind of chalk sleeve provided by the utility model, compared with prior art, a kind of chalk sleeve of the utility model, by chalk
Wherein one end be put into turnbarrel 1 and end be fixed on lifting platform 2, the other end of chalk is fixed by elastic collet 3,
When using chalk, finger pinches outer sleeve 5 and can write, and contact chalk is not needed, to effectively prevent what finger was affectedly bashful
The reasons such as position is improper or force is overweight make chalk fracture, and finger can also be prevented to be infected with chalk dust；Due to lifting platform 2 with
Turnbarrel 1 is threadedly engaged, and lifting platform 2 and fluctuating orbit 3 are clamped, and turnbarrel 1 is rotated when fixing outer sleeve 5, are risen
Drop platform 2 will be moved up and down along fluctuating orbit 3, to drive the chalk on lifting platform 2 to move up and down, when on elastic collet 3
After the chalk end of clamping is used up, turnbarrel 1 can be rotated, lifting platform 2 is moved into a distance to elastic collet 3,
And then the chalk in turnbarrel 1 is released into certain length, to meet the needs for continuing to write, until remaining chalk end can not
It is clamped by elastic collet 3, then re-replaces new chalk, to reduce the waste to chalk end, improve the utilization of chalk
Rate.
In the present embodiment, turnbarrel 1 and lifting platform 2 are cylindrical shape；The end face of lifting platform 2 is provided with hexagon
Groove, suitable for section be hexagon chalk；Or it is provided with circular groove, being suitable for section is circular chalk, thus
When chalk is placed on turnbarrel 1, hexagonal indentations or circular groove can prevent chalk with the bottom of stuck fast chalk
The wobble effects writing effect in turnbarrel 1.
In the present embodiment, one end of fluctuating orbit 3 is protruded into turnbarrel 1, and the other end extends and is bent to rotary sleeve
Outside cylinder 1, there are gaps or smooth engagement, that is, turnbarrel 1 between fluctuating orbit 3 and turnbarrel 1 can 3 face of OQ t track
Accessible rotation.When needing the chalk in turnbarrel 1 releasing certain length, that end outside turnbarrel 1 is pinched
Fluctuating orbit 3, while rotating turnbarrel 1, chalk will moving and are pushed out with lifting platform 2.Optionally, fluctuating orbit
3 ends being located at outside turnbarrel 1 are connected with fingerstall, and finger is facilitated to fix.
It is described referring to FIG. 1 to FIG. 4, as a kind of a kind of specific embodiment of chalk sleeve provided by the utility model
Fluctuating orbit 3 is two, and there are two liters for setting on the position corresponding with two fluctuating orbits 3 of the side of the lifting platform 2
Sliding slot 21 drops.2 two sides of lifting platform are slided up and down along fluctuating orbit 3, keep lifting process more steady.Optionally, it goes up and down
One end of track 3 is axially therethrough lifting platform 2, and lifting platform 2 is prevented to be detached from fluctuating orbit 3.
It as a kind of a kind of specific embodiment of chalk sleeve provided by the utility model, please refers to Fig.1 to Fig.3, goes up and down
Formula chalk sleeve further include: rotation turns round 11, and end of the turnbarrel 1 far from the elastic collet 4 is arranged in, for for hand
Rotation.Optionally, rotation turns round 11 as flat not only beauty and finger is facilitated to be affectedly bashful and rotate.
As a kind of a kind of specific embodiment of chalk sleeve provided by the utility model, go up and down referring to FIG. 1 to FIG. 4,
Formula chalk sleeve further include: annular recess 51 and collar flange 12；Annular recess 51 is arranged on the inner wall of the outer sleeve 5；Ring
Shape flange 12 is arranged on the outer wall of the turnbarrel 1, and is slidably matched with the annular recess 51.Due to collar flange 12
In annular recess 51, can not only realize the connection of outer sleeve 5 and turnbarrel 1 can also make turnbarrel 1 relative to
Outer sleeve 5 rotates.
As a kind of a kind of specific embodiment of chalk sleeve provided by the utility model, Fig. 3 and Fig. 4 is please referred to, is gone up and down
Formula chalk sleeve further include: several sawtooth 511 and anti-rotation teeth 121；Uniformly setting is recessed in the ring-type for several sawtooth 511
On the cell wall of slot 51, and teeth directional is identical as the hand of spiral of the turnbarrel 1；The setting of anti-rotation teeth 121 is convex in the ring-type
On edge 12, and the cusp of the anti-rotation teeth 121 is located in the tooth socket that the sawtooth 511 of adjacent two is constituted, for preventing
The collar flange 12 is slided to the direction opposite with 1 spiral of turnbarrel.
In the present embodiment, internal screw thread rotation direction in turnbarrel 1 is a left side, 511 direction of sawtooth on annular recess 51 also to
A left side, i.e. left flank angle with horizontal plane are acute angle, and right flank angle with horizontal plane is obtuse angle, since anti-rotation teeth 121 exist
Between two adjacent sawtooth 511, so anti-rotation teeth 121 can only move lateral tooth flank to the left, and then turnbarrel 1 can only be to the left
Rotation, cannot rotate to the right, to avoid when using chalk, because stress causes chalk to be pressed into turnbarrel 1.
As a kind of a kind of specific embodiment of chalk sleeve provided by the utility model, go up and down referring to FIG. 1 to FIG. 4,
Formula chalk sleeve further include: fastening sleeve 6 is set in outside the elastic collet 4, and front inner wall is abutted with the elastic collet 4,
For clamping the elastic collet 4.It is arranged a fastening sleeve 6 outside elastic collet 4, further fixes chalk head, prevents
Chalk is fixed unstable and shaking is generated in writing process.
As a kind of a kind of specific embodiment of chalk sleeve provided by the utility model, referring to Fig. 4, the elastic clip
First 4 include: that loop connecting head 41 and several elasticity hook pawl 42；Loop connecting head 41 and the turnbarrel 1 are clamped；Several
The surrounding of head of the loop connecting uniformly is arranged in for elasticity hook pawl 42 and the front inner wall with the fastening sleeve 6 is supported
It connects, for clamping the upper end of chalk.When being inserted into chalk, elasticity hooks pawl 42 and is also easy to produce deformation, is easier to insert the butt end of chalk end
Into and elastic restoring force effect under chalk end wall is grasped.
In the present embodiment, elasticity hook pawl 42 have to center curvature variant part, thus make elasticity hook pawl 42 have to
The elastic restoring force of center position, and then chalk wall is grasped.
In the present embodiment, optionally, elastic collet 4 is removably attachable to the end of turnbarrel 1.
As a kind of a kind of specific embodiment of chalk sleeve provided by the utility model, please refer to Fig.1 to Fig.3, it is described
The inner wall of fastening sleeve 6 is equipped with the protrusion 61 for abutting with the front inner wall of the fastening sleeve 6.In the present embodiment, tightly
Gu sleeve 6 is trapezoidal rotary table, and internal diameter is gradually reduced.One end of wide internal diameter is used to provide lesser fastening to elastic collet 4
Power, one end of narrow internal diameter are used to provide biggish fastening force to elastic collet 4.
As a kind of a kind of specific embodiment of chalk sleeve provided by the utility model, set on the outer wall of the outer sleeve
There is non slip surface.When preventing rotation turnbarrel 1, skid between finger and outer sleeve 5.
The gripper end that fastening sleeve 6 is hooked pawl 42 to elasticity first is mobile, then the wide internal diameter of fastening sleeve 6 hooks pawl to elasticity
42 pressure is smaller by even zero, then the elastic pawl 42 that hooks is in light grasping state or relaxed state, is convenient for for being inserted into chalk at this time
In turnbarrel 1, after chalk bottom end is caught on lifting platform 2, it is rotated further by turnbarrel 1 and is adjusted to chalk to be suitble to the height of writing
Fastening sleeve 6 after the completion of adjustment, then is moved upward to narrow inner-diameter end, since the internal diameter of fastening sleeve 6 is gradually reduced, tightly by degree
Gu 6 pairs of elasticity of sleeve hook pawl 42 and gradually compress directly, and then securely fix chalk.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (9)
1. a kind of chalk sleeve characterized by comprising
Turnbarrel for placing chalk, and is provided with helicitic texture on inner wall；
Lifting platform, setting are threadedly engaged in the turnbarrel, and with the turnbarrel, are used to support chalk bottom end；
Fluctuating orbit, first end protrude into the turnbarrel, and with lifting platform clamping and along the axis of the turnbarrel
Line direction is slidably matched；
Outer sleeve is set in outside the turnbarrel, and one end is connect with the turnbarrel, the other end and the fluctuating orbit
Second end be fixedly connected；
Elastic collet, equipped with the cavity being connected to the turnbarrel, and one end is connect with the outer sleeve, and the other end is for pressing from both sides
Hold the upper end of chalk.
2. a kind of chalk sleeve as described in claim 1, which is characterized in that the fluctuating orbit is two, the lifting platform
There are two go up and down sliding slot for setting on the position corresponding with two fluctuating orbits of side.
3. a kind of chalk sleeve as described in claim 1, which is characterized in that further include:
Rotation is turned round, and end of the turnbarrel far from the elastic collet is arranged in.
4. a kind of chalk sleeve as claimed in claim 3, which is characterized in that further include:
Annular recess is arranged on the inner wall of the outer sleeve；
Collar flange is arranged on the outer wall of the turnbarrel, and is slidably matched with the annular recess.
5. a kind of chalk sleeve as claimed in claim 4, which is characterized in that further include:
Several sawtooth are uniformly arranged on the cell wall of the annular recess, and the spiral side of teeth directional and the turnbarrel
To identical；
Anti-rotation teeth are arranged on the collar flange, and the cusp of the anti-rotation teeth is located at two adjacent sawtooth
In the tooth socket of composition, for preventing the collar flange from sliding to the direction opposite with the turnbarrel spiral.
6. a kind of chalk sleeve as described in claim 1-5 any one, which is characterized in that further include:
Fastening sleeve is set in outside the elastic collet, and front inner wall is abutted with the elastic collet, for clamping the bullet
Property collet.
7. a kind of chalk sleeve as claimed in claim 6, which is characterized in that the elastic collet includes:
Loop connecting head is clamped with the turnbarrel；
Several elasticity hook pawl, and the surrounding of the head of the loop connecting and the front end with the fastening sleeve is uniformly arranged in
Inner wall abuts, for clamping the upper end of chalk.
8. a kind of chalk sleeve as claimed in claim 6, which is characterized in that the inner wall of the fastening sleeve be equipped with for institute
State the protrusion that the front inner wall of fastening sleeve abuts.
9. a kind of chalk sleeve as described in claim 1, which is characterized in that the outer wall of the outer sleeve is equipped with non slip surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822196282.3U CN209534558U (en) | 2018-12-26 | 2018-12-26 | A kind of chalk sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822196282.3U CN209534558U (en) | 2018-12-26 | 2018-12-26 | A kind of chalk sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209534558U true CN209534558U (en) | 2019-10-25 |
Family
ID=68266432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822196282.3U Expired - Fee Related CN209534558U (en) | 2018-12-26 | 2018-12-26 | A kind of chalk sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209534558U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111839734A (en) * | 2020-07-07 | 2020-10-30 | 天津大学 | Surgical robot end device with manual quick-change mechanism |
-
2018
- 2018-12-26 CN CN201822196282.3U patent/CN209534558U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111839734A (en) * | 2020-07-07 | 2020-10-30 | 天津大学 | Surgical robot end device with manual quick-change mechanism |
| CN111839734B (en) * | 2020-07-07 | 2022-06-03 | 天津大学 | Surgical robot end device with manual quick-change mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191025 Termination date: 20211226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |