CN213035543U

CN213035543U - Chalk sleeve capable of preventing hands from being dirty

Info

Publication number: CN213035543U
Application number: CN202021447889.5U
Authority: CN
Inventors: 牛倩
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-04-23
Anticipated expiration: 2030-07-21

Abstract

The utility model discloses a prevent chalk cover of dirty hand, including splint and chalk body, splint include first splint and second splint, the chalk body clamp is established between first splint and second splint, common movable mounting has the connection hinge between first splint and the second splint, install clamping device that resets between first splint and the second splint, symmetrical fixed mounting has two dust guards on one side outer wall is kept away from mutually to first splint and second splint, the dust guard is semi-circular, first splint and second splint are kept away from connection hinge one end common cover and are equipped with the upper cover, the second splint are close to first splint one side and install thrust unit. Has the advantages that: the utility model discloses utilize first splint of first spring drive and second splint to press from both sides the chalk tight, replaced the mode of hard stopper to utilize the dust guard to collect the chalk dust that drops when using, solved the problem that the chalk pollutes the finger.

Description

Chalk sleeve capable of preventing hands from being dirty

Technical Field

The utility model relates to a teaching articles for use technical field especially relates to a prevent chalk cover of dirty hand.

Background

The chalk is a tool widely used in daily life, is generally used for writing on a blackboard, and is mostly used by teachers. The teacher holds the chalk by hands for a long time, and the chalk dust is easy to stick to the hands, so that the chalk dust is not only not clean, but also can corrode and crack the hands, and the health is seriously influenced.

The chalk sleeve on the existing market is characterized in that the chalk is placed in a sleeved mode, the chalk is fixed by using the friction force between the chalk and the inner wall of the chalk sleeve, so that the chalk needs to be forcibly plugged into the chalk sleeve when the chalk is installed, a lot of chalk dust can be left on fingers, and when the existing chalk sleeve is used, half of the chalk is used, and the chalk cannot be continuously used due to insufficient friction force.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems that the installation mode is too dirty and the chalk can not be used up as much as possible in the prior art, and providing a chalk sleeve for preventing hands from being dirty.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a prevent chalk cover of dirty hand, includes splint and chalk body, splint include first splint and second splint, first splint and second splint are close to one side outer wall mutually and all are the cambered surface shape, the chalk body clamp is established between first splint and second splint, common movable mounting has the connection hinge between first splint and the second splint, install clamping device that resets between first splint and the second splint, symmetry fixed mounting has two dust guards on one side outer wall is kept away from mutually to first splint and second splint, the dust guard is semi-circular, first splint and second splint are kept away from connection hinge one end and are overlapped jointly and are equipped with the upper cover, the second splint are close to first splint one side and install thrust unit.

In the chalk sleeve for preventing hands from being dirty, the reset clamping device comprises a first clamping plate, wherein a first connecting plate is fixedly installed at one end, away from the upper cover, of the first clamping plate, a second connecting plate is fixedly installed at one end, away from the upper cover, of the second clamping plate, and two first springs are fixedly installed between the first connecting plate and the outer wall, close to one side, of the second connecting plate.

In foretell chalk cover of preventing dirty hand, symmetry fixed mounting has two fixed plates on first splint and the second splint keep away from one side outer wall mutually, the upper cover is close to symmetrical fixed mounting on fixed plate one side outer wall has two inserted bars, two the jack has all been seted up on the fixed plate, mutually support between inserted bar and the jack.

In foretell chalk cover of preventing dirty hand, thrust unit includes that second splint are close to fixed mounting on the outer wall of first splint one side and have the mounting panel, fixed mounting has the telescopic link on the outer wall of mounting panel one side is close to chalk body one side, the telescopic link is kept away from mounting panel one end fixed mounting and is had the push pedal, has seted up the movable groove on the second splint, the push pedal is close to fixed mounting on the outer wall of movable groove one side and has the threaded rod, and the threaded rod passes the movable groove, the threaded rod is kept away from push pedal one end screw thread and is installed lock.

In the chalk sleeve for preventing hands from being dirty, the telescopic rod is sleeved with the second spring, and two ends of the second spring are fixedly installed on the outer wall of the installation plate and the outer wall of the push plate respectively.

Compared with the prior art, the utility model discloses the advantage lies in:

1. the utility model utilizes the first spring to drive the first clamping plate and the second clamping plate to clamp the chalk, replaces the mode of hard plug, and utilizes the dust guard to collect the chalk dust falling off during use, thereby solving the problem that the chalk pollutes fingers;

2. the utility model discloses installed thrust unit at the lateral wall of second splint, utilized the push pedal to promote the chalk and exposed length to utilize lock nut to fix, make the chalk can use up as far as possible, practice thrift the cost of teaching.

Drawings

FIG. 1 is a front view of a hand soiling resistant chalk cover according to the present invention;

FIG. 2 is a front partial cross-sectional view of a hand-soiling resistant chalk cover according to the present invention;

fig. 3 is an enlarged view of a portion a of the chalk sleeve for preventing hands from being soiled according to the present invention.

In the figure: the chalk box comprises a first clamping plate 1, a second clamping plate 2, a dust-proof plate 3, a first connecting plate 4, a second connecting plate 5, a first spring 6, a connecting hinge 7, an upper cover 8, a chalk body 9, a fixing plate 10, an insertion rod 11, a telescopic rod 12, a push plate 13, a movable groove 14, a threaded rod 15, a locking nut 16 and a second spring 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a chalk sleeve for preventing hands from being dirty comprises a clamping plate and a chalk body 9, wherein the clamping plate comprises a first clamping plate 1 and a second clamping plate 2, the outer walls of the sides, close to each other, of the first clamping plate 1 and the second clamping plate 2 are both arc-surface-shaped, the chalk body 9 is clamped between the first clamping plate 1 and the second clamping plate 2, a connecting hinge 7 is movably mounted between the first clamping plate 1 and the second clamping plate 2, a resetting and clamping device is mounted between the first clamping plate 1 and the second clamping plate 2, the resetting and clamping device comprises a first connecting plate 4 fixedly mounted at one end, far away from an upper cover 8, of the first clamping plate 1, a second connecting plate 5 fixedly mounted at one end, far away from the upper cover 8, of the second clamping plate 2, two first springs 6 are fixedly mounted between the outer walls, close to each side, of the first connecting plate 4 and the second connecting plate 5, two first springs 6 are fixedly mounted together, and the, replaces the mode of hard plugging, and utilizes the dust-proof plate 3 to collect the chalk dust falling off during use, thereby solving the problem that the chalk pollutes fingers.

Two dustproof plates 3 are symmetrically and fixedly arranged on the outer wall of one side, away from a connecting hinge 7, of the first clamping plate 1 and the second clamping plate 2, the dustproof plates 3 are semicircular, one ends, away from the connecting hinge 7, of the first clamping plate 1 and the second clamping plate 2 are jointly sleeved with an upper cover 8, two fixing plates 10 are symmetrically and fixedly arranged on the outer wall of one side, away from the first clamping plate 2, of the first clamping plate 1 and the second clamping plate 2, two inserting rods 11 are symmetrically and fixedly arranged on the outer wall of one side, close to the fixing plates 10, of the upper cover 8, inserting holes are formed in the two fixing plates 10, the inserting rods 11 are mutually matched with the inserting holes, a pushing device is arranged on one side, close to the first clamping plate 1, of the second clamping plate 2, a mounting plate is fixedly arranged on the outer wall of one side, close to the chalk body 9, the cover is equipped with second spring 17 on telescopic link 12, second spring 17 both ends are fixed mounting respectively on the outer wall of mounting panel outer wall and push pedal 13, movable groove 14 has been seted up on the second splint 2, push pedal 13 is close to fixed mounting on the outer wall of movable groove 14 one side has threaded rod 15, and threaded rod 15 passes movable groove 14, threaded rod 15 is kept away from push pedal 13 one end screw thread and is installed lock nut 16, it is worth noting, utilize push pedal 13 to promote the chalk and expose length, and utilize lock nut 16 to fix, make the chalk can use up as far as possible, practice thrift the cost of teaching.

Further, unless otherwise specifically stated or limited, the above-described fixed connection is to be understood in a broad sense, and may be, for example, welded, glued, or integrally formed as is conventional in the art.

The utility model discloses the theory of operation: the first clamping plate 1 and the second clamping plate 2 are pulled apart by the two dust-proof plates 3, the first clamping plate 1 and the second clamping plate 2 rotate around the connecting hinge 7, so that the first connecting plate 4 and the second connecting plate 5 compress the two first springs 6, chalk is placed between the first clamping plate 1 and the second clamping plate 2, and the first clamping plate 1 and the second clamping plate 2 are assisted to clamp the chalk by the elastic force of the first springs 6.

And loosening the locking nut 16 to ensure that the friction force between the locking nut 16 and the second clamping plate 2 disappears, and adjusting the position of the push plate 13 to ensure that the push plate 13 drives the chalk to be exposed for a certain length, so that the utilization rate of the chalk is improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The chalk sleeve capable of preventing hands from being dirty comprises a clamping plate and a chalk body (9), and is characterized in that the clamping plate comprises a first clamping plate (1) and a second clamping plate (2), the first clamping plate (1) and the second clamping plate (2) are close to one outer wall of one side and are both arc-shaped, the chalk body (9) is clamped between the first clamping plate (1) and the second clamping plate (2), a connecting hinge (7) is movably mounted between the first clamping plate (1) and the second clamping plate (2), a resetting and clamping device is mounted between the first clamping plate (1) and the second clamping plate (2), two dustproof plates (3) are symmetrically and fixedly mounted on the outer wall of one side of the first clamping plate (1) and the second clamping plate (2), the dustproof plates (3) are semicircular, one ends of the first clamping plate (1) and the second clamping plate (2) far away from the connecting hinge (7) are sleeved with an upper cover (8), and a pushing device is arranged on one side, close to the first clamping plate (1), of the second clamping plate (2).

2. The chalk sleeve for preventing hands from being dirty according to claim 1, wherein the resetting and clamping device comprises a first connecting plate (4) fixedly mounted at one end of the first clamping plate (1) far away from the upper cover (8), a second connecting plate (5) fixedly mounted at one end of the second clamping plate (2) far away from the upper cover (8), and two first springs (6) fixedly mounted between the outer walls of the first connecting plate (4) and the second connecting plate (5) close to one side.

3. The chalk sleeve for preventing hands from being dirty according to claim 1, wherein two fixing plates (10) are symmetrically and fixedly installed on the outer wall of the side, away from the fixing plate (10), of the first clamping plate (1) and the second clamping plate (2), two insertion rods (11) are symmetrically and fixedly installed on the outer wall of the side, close to the fixing plate (10), of the upper cover (8), insertion holes are formed in the two fixing plates (10), and the insertion rods (11) and the insertion holes are matched with each other.

4. The chalk sleeve capable of preventing hands from being dirty as claimed in claim 1, wherein the pushing device comprises a second clamping plate (2) which is close to the outer wall of one side of the first clamping plate (1) and is fixedly provided with a mounting plate, the mounting plate is close to the outer wall of one side of the chalk body (9) and is fixedly provided with a telescopic rod (12), the telescopic rod (12) is far away from one end of the mounting plate and is fixedly provided with a push plate (13), the second clamping plate (2) is provided with a movable groove (14), the push plate (13) is close to the outer wall of one side of the movable groove (14) and is fixedly provided with a threaded rod (15), the threaded rod (15) penetrates through the movable groove (14), and the threaded rod (15) is far away from one end.

5. A chalk sleeve for preventing hands from being stained according to claim 4, characterized in that a second spring (17) is sleeved on the telescopic rod (12), and two ends of the second spring (17) are fixedly arranged on the outer wall of the mounting plate and the outer wall of the push plate (13) respectively.