CN210148998U

CN210148998U - Chalk cylinder device capable of being pushed for use

Info

Publication number: CN210148998U
Application number: CN201920894102.0U
Authority: CN
Inventors: 王丹丹; 黄睿
Original assignee: Wuxi Machinery and Electron Higher Professional and Technical School
Current assignee: Wuxi Machinery and Electron Higher Professional and Technical School
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-03-17
Anticipated expiration: 2029-06-14

Abstract

The utility model provides a chalk section of thick bamboo device that can impel and use, its barrel that includes the cylinder, the cylinder barrel include outer wall and inner wall, be hollow structure between outer wall and the inner wall, barrel inner wall inboard is provided with a plurality of chamfer devices to the export end slope, and the barrel exit end is provided with advancing device that can move about from top to bottom, and advancing device includes the advancing structure of lower part and the spring assembly on upper portion, advancing structure upper portion be connected with the spring assembly lower extreme, the lower part is connected with the bottom of barrel through impelling connecting device, spring assembly upper end and barrel exit end upper portion fixed connection. The utility model discloses in view of the likepowder thing body of a writing brush of chalk, stereoplasm chamfer can prevent to arrange the chalk in the inner wall backward when using and back up, after the chalk of barrel exit end used up, can realize through the advancing device promotion of bottom that inside chalk is to the exit end overhanging, can avoid the user incessant contact chalk when using the chalk, use more sanitary, safety.

Description

Chalk cylinder device capable of being pushed for use

Technical Field

The utility model relates to a stationery technical field, concretely relates to can impel chalk section of thick bamboo device of use.

Background

Chalk is a tool widely used in daily learning process, is generally used for writing on a blackboard, and has a main component of white precipitate, namely calcium sulfate. At present, the chalk used in China mainly comprises two kinds of common chalk and dust-free chalk, and the main component of the common chalk is calcium carbonate (limestone CaCO)₃) Calcium sulfate (gypsum), calcium oxide, and other minor metal elements such as lead, manganese, barium, cadmium, etc.; the dust-free chalk is an improved product of ordinary chalk, and is aimed at eliminating chalk dust pollution in classroom, and is characterized by that in the ordinary chalk the oil and fat or polyalcohol substances are added as adhesive, and then the fillers with large specific gravity, such as clay, marl and cement, etc. are added, so that the specific gravity and volume of chalk dust can be increased, and said chalk dust is not easy to scatter, but in the actual application its effect for reducing chalk dust pollution is not very obvious. The common problem of the common chalk and the dust-free chalk in the use process is that a user inevitably sticks a plurality of harmful components in the chalk when using the chalk, and especially, when using the chalk in summer or in a hot environment, the user often sticks hands because the hands sweat to stick more chalk components, thus bringing inconvenience to the user invisibly.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a can avoid user direct contact chalk can impel chalk section of thick bamboo device of use.

The utility model provides a technical scheme that above-mentioned technical problem adopted does:

the utility model provides a chalk section of thick bamboo device that can impel and use, its barrel that includes the cylinder, the cylinder barrel include outer wall and inner wall, be hollow structure between outer wall and the inner wall, barrel inner wall inboard is provided with a plurality of chamfer devices to the export end slope, and the barrel exit end is provided with advancing device that can move about from top to bottom, and advancing device includes the advancing structure of lower part and the spring assembly on upper portion, advancing structure upper portion be connected with the spring assembly lower extreme, the lower part is connected with the bottom of barrel through impelling connecting device, spring assembly upper end and barrel exit end upper portion fixed connection.

Further, the bottom of the barrel is provided with a pushing device, the pushing device can be connected with the cylindrical body in an opening and closing mode, the pushing device is opened and used for storing the chalk in the cylindrical body, when the pushing device is closed, the pushing device is connected with the lower end of the pushing connecting device, the pushing connecting device connected with the pushing device can be pushed upwards through force application to the lower end of the pushing device, and then the pushing structure is driven to move upwards. The pushing device comprises an outer shell and an inner pushing structure, the outer shell is used for being connected with the outer wall of the barrel in an openable and closable mode, screws are preferably fixedly connected in an openable and closable mode, when the pushing device is closed/the pushing device is fixedly connected with the outer wall of the barrel, the upper end of the pushing structure is connected with the lower end of the pushing connecting device, and the pushing connecting device connected with the pushing structure can be pushed upwards by applying force to the lower end of the pushing structure.

Furthermore, the upper end of the propelling connecting device is connected with the lower part of the propelling structure, and the lower end of the propelling connecting device is connected with the pushing device.

Further, the propelling connecting device is arranged in the hollow structure between the outer wall and the inner wall, at least two rod pieces capable of being arranged in the hollow structure are preferably used for the propelling connecting device, and the hard strip-shaped structural piece is preferably used for the rod pieces.

Further, the lower part of the propelling structure is flush with the upper end of the inner wall of the cylinder body when not subjected to pressure exerted by the propelling connection device.

Furthermore, the propelling structure is a cylindrical structure with the diameter the same as that of the inner wall of the barrel, and a chamfering device which can move up and down along with the pushing device is fixedly arranged on the inner wall of the propelling structure.

Further, the inner wall of the barrel body is two semi-cylindrical barrel bodies with the same structure and semicircular cross sections, the outer parts of the two semi-cylindrical barrel bodies are connected through an elastic device, the upper end and the lower end of the inner wall of the barrel body are fixed, the semi-cylindrical barrel bodies are fixed to prevent the semi-cylindrical barrel bodies from moving upwards or downwards relative to the outer wall of the barrel body, the fixing can be achieved through arranging a fixing plate connected with the outer wall of the barrel body, and the fixing plate is provided with a through hole to facilitate the passing of the connection device.

Furthermore, the inner wall of the propelling structure is two semi-cylindrical cylinders with the same structure and semicircular cross sections, and the outer parts of the two semi-cylindrical cylinders are connected through an elastic device.

Furthermore, the chamfering device is a hard chamfering device and can be made of hard plastic materials, metal materials such as iron or alloy and the like.

Compared with the prior art, the utility model discloses the advantage that possesses does:

in view of the chalk body made of the chalk powder, the hard chamfer can prevent the chalk arranged in the inner wall from backing backwards when in use, and after the chalk at the outlet end of the cylinder body is used up, the inner chalk can be pushed to extend outwards to the outlet end through the pushing device at the bottom, so that a user can be prevented from uninterruptedly contacting the chalk when using the chalk, and the chalk is more sanitary and safer to use; the propelling chalk barrel device of the utility model has simple structure and is suitable for chalks with different specifications; and adopt the utility model discloses a cracked phenomenon appears when having avoided the chalk to use behind the propelling chalk cartridge device centre gripping chalk, can resources are saved to a certain extent.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, a chalk barrel device capable of being pushed for use comprises a cylindrical barrel body 1, wherein the cylindrical barrel body comprises an outer wall 11 and an inner wall 12 which are of hard structures, the hard structures can be made of hard plastics or metal materials, a hollow structure 13 is arranged between the outer wall 11 and the inner wall 12, a plurality of chamfering devices 121 inclined towards an outlet end are arranged on the inner side of the inner wall 12 of the barrel body, a pushing device 15 capable of moving up and down is arranged at an outlet end 14 of the barrel body, the pushing device 15 comprises a pushing structure 151 at the lower part and a spring device 152 at the upper part, the upper part of the pushing structure 151 is connected with the lower end of the spring device 152, the lower part of the pushing structure 151 is connected with the bottom of the barrel body 1 through a pushing connection device 16.

Further, the bottom of the cylinder 1 is provided with a pushing device 17, the pushing device 17 is connected with the cylinder body in an openable and closable manner, the pushing device 17 is opened to store the chalk in the cylinder body, when the pushing device 17 is closed, the pushing device 17 is connected with the lower end of the propelling connecting device 16, and the pushing connecting device 16 connected with the pushing device 17 can be pushed upwards by applying force to the lower end of the pushing device 17, so that the propelling structure 151 is driven to move upwards. Pushing device 17 include outside casing and inside promotion structure, outside casing is used for being connected with barrel outer wall open and close, but the preferred screw rigid coupling of open and close connected mode, when pushing device 17 closed/pushing device 17 and barrel 1 outer wall fixed connection, the upper end and the propulsion connecting device 16 lower extreme of promotion structure are connected, through to promoting the structure lower extreme application of force, can upwards promote the propulsion connecting device 16 of being connected with it.

Furthermore, the upper end of the propelling connecting device 16 is connected with the lower part of the propelling structure 151, the lower end is connected with the pushing device 17, and the upper end is connected with the lower part of the propelling structure 151 by adopting a connecting structure which is inclined and smooth, so that the chalk is prevented from being clamped when the chalk extends from the inner wall 12 of the cylinder body to the propelling structure 151.

Further, the pushing connection device 16 is arranged in the hollow structure 13 between the outer wall 11 and the inner wall 12, the pushing connection device 16 preferably uses at least two rods which can be arranged in the hollow structure 13, and the rods preferably use hard strip-shaped structural members.

Further, the lower portion of the driving structure 151 is flush with the upper end of the inner wall 12 of the barrel when not pressed by the driving connection device 16.

Furthermore, the propelling structure 151 is a cylindrical structure with the diameter the same as that of the inner wall 12 of the cylinder, and a chamfering device 153 which can move up and down along with the propelling device is fixedly arranged on the inner wall of the propelling structure 151.

Further, the inner wall 12 of the cylinder is two semi-cylindrical cylinders 122 with the same structure and a semicircular cross section, the two semi-cylindrical cylinders 122 are connected with each other by an elastic device 123, the upper end and the lower end of the inner wall 12 of the cylinder are fixed, and the fixing is performed here to prevent the semi-cylindrical cylinder 122 from moving upwards or downwards relative to the outer wall 11 of the cylinder, and the fixing can be performed by arranging a fixing plate connected with the outer wall 11 of the cylinder, wherein the fixing plate should be provided with a through hole to facilitate the passing of the pushing and connecting device 16; the elastic device 123 preferably uses an elastic band to press the two semicylindrical cylinders 122 inwards; the inner radius of the semi-cylindrical barrel 122 is equal to or smaller than the section radius of chalk, the design of the internal chamfering device 121 enables a part of gap to be formed between the two semi-cylindrical barrels 122 when the chalk is filled in the barrel inner wall 12, due to the fact that different chalks are different in diameter and the same piece of chalk is different in vertical thickness, the design that the two semi-cylindrical barrels 122 are connected through the elastic device 123 enables the pressure on the chalk in the barrel inner wall 12 to be kept all the time when different chalks are filled in the barrel inner wall, the chamfering device inclined towards the outlet end can act on the chalk, and the chalk is prevented from sliding backwards.

Further, the inner wall of the propelling structure 151 is two semi-cylindrical cylinders with the same structure and a semicircular cross section, the outer parts of the two semi-cylindrical cylinders are connected through an elastic device 154, the spring device 152 is arranged at the outer edge of chalk in the inner wall 12, when in use, the inner chalk is supported by the chamfering device 153 and is not contacted with the chalk, and the spring device 152 is a common spring, the number of the spring device is at least 2, and the spring device is evenly distributed on the circumference of the upper end of the propelling structure 151.

Furthermore, the

chamfering devices

121 and 153 are hard chamfering devices, which can be made of hard plastic materials, iron or metal materials such as alloy, and the

chamfering devices

121 and 153 are all multiple and are uniformly distributed on the corresponding inner wall structures.

The propelling chalk barrel device applies pressure to the propelling connection device 16 through the barrel bottom end pushing device 17, the propelling connection device 16 transmits the pressure to the propelling structure 151 and the spring device 152, the chamfering device on the propelling structure 151 drives the inner chalk to slide towards the outlet end of the barrel, the outer elastic device always presses the semi-cylindrical barrel to generate pressure towards the inside, the chamfering device is made to be tightly attached to the outer surface of the inner chalk, after the pressure of the barrel bottom end pushing device 17 is released, the spring device 152 releases elastic force to push the propelling structure 151 to restore the original position, the inner chalk is automatically locked and positioned by the chamfering device on the inner side of the inner wall 12 of the barrel, a pulsating extending process is completed, and the chalk points can be continuously.

Claims

1. A propelling chalk barrel device is characterized in that: the cylinder body comprises a cylindrical body, the cylindrical body comprises an outer wall and an inner wall, a hollow structure is arranged between the outer wall and the inner wall, a plurality of chamfering devices inclining to an outlet end are arranged on the inner side of the inner wall of the cylindrical body, a propelling device capable of moving up and down is arranged at the outlet end of the cylindrical body, the propelling device comprises a propelling structure at the lower part and a spring device at the upper part, the upper part of the propelling structure is connected with the lower end of the spring device, the lower part of the propelling structure is connected with the bottom of the cylindrical body through a propelling connection device, and the upper.

2. A propelling chalk cartridge device according to claim 1, characterized in that: the chalk powder storage device is characterized in that a pushing device is arranged at the bottom of the cylinder body and can be opened and closed to be connected with the cylinder body, the pushing device is opened to store chalk powder into the cylinder body, and when the pushing device is closed, the pushing device is connected with the lower end of the propelling connection device.

3. A propelling chalk cartridge device according to claim 1, characterized in that: the upper end of the propelling connecting device is connected with the lower part of the propelling structure, and the lower end of the propelling connecting device is connected with the pushing device.

4. A chalk cartridge device capable of propelling use according to claim 1 or 3, characterized in that: the propelling connecting device is arranged in the hollow structure between the outer wall and the inner wall.

5. A propelling chalk cartridge device according to claim 1, characterized in that: the propelling structure is a cylindrical structure with the diameter the same as that of the inner wall of the barrel, and a chamfering device which can move up and down along with the propelling device is fixedly arranged on the inner wall of the propelling structure.

6. A chalk barrel device capable of being pushed for use according to claim 1 or 5, wherein: the lower part of the propelling structure is flush with the upper end of the inner wall of the cylinder body when not subjected to pressure applied by the propelling connection device.

7. A propelling chalk cartridge device according to claim 1, characterized in that: the inner wall of the cylinder body is two semi-cylindrical cylinder bodies with the same structure and semicircular cross sections, and the outsides of the two semi-cylindrical cylinder bodies are connected through an elastic device.

8. A propelling chalk cartridge device according to claim 6, characterized in that: the inner wall of the propelling structure is two semi-cylindrical barrels with the same structure and semicircular cross sections, and the outsides of the two semi-cylindrical barrels are connected through an elastic device.

9. A chalk barrel device capable of being pushed for use according to claim 1 or 5, wherein: the chamfering device is a hard chamfering device.