CN210139720U - Mechanical pencil capable of preventing lead from being mistakenly swallowed - Google Patents

Abstract

The utility model discloses a mechanical pencil capable of preventing a pencil lead from being swallowed by mistake, which comprises a pencil body, wherein one end of the pencil body is provided with a pencil head, one end of the pencil head is provided with a protective sleeve, a pencil lead tube is arranged in the pencil body, one end of the pencil lead tube is fixed with a clamping plate, and the inner wall of the pencil head is provided with a stop block; the utility model relates to a rationally, high durability and convenient use, be provided with the protection tube at the propelling pencil nib front end, the protection tube can provide the protection for the front end of pencil core, shorten the length that the pencil core stretches out, because the length that the pencil core stretches out obtains the protection, and stretch out length shortens, and the moment arm length is put up to power to the moment of pencil core, so the pencil core is short more, arm length of force is short more, the moment arm is less, the pencil core is difficult to the rupture more, and the front end cover of pencil core has the protective sheath, the pencil core that stretches out can be protected to the protective sheath, no matter propelling pencil falls or collides, the pencil core that stretches out is difficult to break, thereby avoid child to eat by mistake with the pencil core of rupture in.

Description

Mechanical pencil capable of preventing lead from being mistakenly swallowed

Technical Field

The utility model relates to a learning tools technical field specifically is a prevent mistake and gulp down propelling pencil of lead.

Background

Mechanical pencils, i.e. pencils in which the spring returns to its original position after the pressing force is released. The propelling pencil is divided into a thick lead (larger than 0.9mm) and a thin lead (smaller than 0.9mm) propelling pencil according to the diameter of the pencil lead. According to the mode of writing out, can divide into weight core formula, rotation type, pulsation formula and automatic compensation formula, propelling pencil is widely used in the school, and wooden pencil needs often to curl and cut in order to keep writing smoothly, and the appearance of propelling pencil is just complied with people's convenient to use's needs. The propelling pencil, as the name implies, can automatically or semi-automatically eject the lead without coiling and cutting.

However, when the existing mechanical pencil is used, the pencil core of the mechanical pencil is easy to break, and some children can easily swallow the broken pencil core on the desktop into the stomach, so that the mechanical pencil has great hidden health risks.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a to the not enough of prior art, the utility model provides a prevent mistake and gulp down propelling pencil of lead core has advantages such as convenient to use, the difficult rupture of lead core, has solved interior easy rupture of lead core of current propelling pencil and has been swallowed the scheduling problem by children.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a prevent mistake and gulp down propelling pencil of lead, includes the body, body one end is provided with the nib, nib one end is provided with the protective sheath, the inside lead core pipe that is provided with of body, lead core pipe one end is fixed with the cardboard, be provided with the dog on the nib inner wall, the dog with be provided with the protection tube between the nib, the nib with be provided with the baffle between the body, lead core pipe one end is stretched out from the baffle, lead core pipe one end is provided with the split tube, the split tube embedding is in locking hoop, the baffle with pass through spring coupling between the cardboard.

In a further improvement, the protective tube and the inner wall of the pencil lead tube are jointed with a rubber skin.

In a further improvement, the pen body is connected with the pen point through threads.

In a further refinement, the split tube is divided into three equal parts.

In a further improvement, a key is fixed at the tail of the pencil lead tube, and a chuck is fixed on the side surface of the key.

In a further improvement, the locking hoop is fixed on the baffle.

In a further improvement, the size of each pencil lead tube is 2.5 mm.

(III) advantageous effects

Compared with the prior art, the utility model provides a prevent mistake and gulp down propelling pencil of lead core possesses following

Has the advantages that:

1. this kind of prevent mistake and gulp down propelling pencil of lead core, moreover, the steam generator is simple in structure, be provided with the protection tube at propelling pencil nib front end, the protection tube can provide the protection for the front end of pencil core, shorten the length that the pencil core stretches out, because the length that the pencil core stretches out obtains the protection, and the stretching out length shortens, and the moment arm length is do all can for the moment of pencil core, so the pencil core is short more, the moment arm length is short more, the moment arm is less, the pencil core is difficult to break more, and the front end cover of pencil core has the protective sheath, the pencil core that stretches out can be protected to the protective sheath, no matter propelling pencil falls or collides, the pencil core of stretching out is difficult to break on the desktop, children also can not pick up the pencil core after the break, thereby avoid the pencil core of breaking in the.

Drawings

FIG. 1 is a schematic view of the subjective structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is an enlarged view of the structure at the position A of the present invention;

fig. 4 is a schematic view of the split-tube structure of the present invention.

In the figure: 1. a pen body; 2. a pen point; 3. a protective sleeve; 4. pressing a key; 5. clamping a head; 6. a pencil lead tube; 7. a rubber skin; 8. a stopper; 9. protecting the tube; 10. clamping a plate; 11. a locking band; 12. splitting the tube; 13. a baffle plate; 14. a spring.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a prevent mistake and gulp down propelling pencil of lead, includes body of a pen 1, 1 one end of body of a pen is provided with nib 2, 2 one end in the nib is provided with protective sheath 3, 1 inside lead core pipe 6 that is provided with of body of a pen, 6 one end in the lead core pipe is fixed with cardboard 10, be provided with dog 8 on 2 inner walls in the nib, dog 8 with be provided with protection tube 9 between the nib 2, nib 2 with be provided with baffle 13 between the body of a pen 1, 6 one end in the lead core pipe stretches out from baffle 13, 6 one end in the lead core pipe is provided with split tube 12, the embedding of split tube 12 is in locking hoop 11, baffle 13 with connect through spring 14 between the cardboard 10.

As shown in fig. 1, a button 4 is fixed at the tail of the pencil lead holder 6, and a chuck 5 is fixed at the side surface of the button 4, so that the propelling pencil is convenient to carry.

As shown in fig. 2, the protection tube 9 with 6 inner walls of pencil core pipe are laminated and are had rubber 7, and rubber 7 can improve the intraductal compliance of protection tube 9 and pencil core 6, and when propelling pencil falls from the eminence, 7 soft textures of rubber, pencil core 6 can not produce rigid collision with the pipe wall, and rubber 7 can provide the protection for pencil core 6, avoids pencil core 6 to appear falling disconnected problem, body of a pen 1 with 2 through threaded connection of nib, be convenient for dismantle propelling pencil.

As shown in fig. 3 and 4, the splitting tube 12 is trisected, when the splitting tube 12 extends from the locking hoop 11, the locking hoop 11 does not lock the splitting tube 12 any more, the splitting tube 12 is opened at the moment, the pencil lead is movable, the locking hoop 11 is fixed on the baffle 13, the size of the pencil lead tube 6 is 2.5 mm, the size of the inner tube wall of the mechanical pencil is narrow, the movement range of the pencil lead in the protection tube 9 and the pencil lead tube 6 is small, and the pencil lead does not collide with the tube wall violently when the mechanical pencil falls down.

The working principle is as follows: when the pencil lead tube is used, the pencil lead tube 6 can be pushed to move by pressing the key 4, the spring 14 is compressed to push the split tube 12, the split tube 12 extends out of the locking hoop 11 and is opened, the pencil leads stored in the pencil lead tube 6 extend out of the split tube 12, enter the protection tube 9 and pass through the protection tube 9, and are exposed out of the protection sleeve 3, so that a user can write through the pencil leads. When the propelling pencil falls, the pencil core at the pencil head 2 is wrapped by the protective sleeve 3, the pencil core at the tip is protected by the protective sleeve 3, and the problem that the pencil core at the tip is broken is avoided. The pencil core stored in the pencil core tube 6 is also protected by the rubber 7 and cannot be subjected to hard collision from the pencil core tube 6, the protection tube 9 and the pencil core tube 6 are narrow in inner size, and the collision strength of the pencil core and the tube wall is small.

To sum up, the utility model has the advantages of reasonable design, be provided with protection tube 9 at the 2 front ends of propelling pencil nib, protection tube 9 can provide the protection for the front end of pencil core, shorten the length that the pencil core stretches out, because the length that the pencil core stretches out obtains the protection, and stretch out length and shorten, and the moment of flexure moment of pencil core is power arm of force length, so the pencil core is short more, arm of force length is short more, the moment of flexure is less, the pencil core is difficult to the rupture more, and the front end cover of pencil core has protective sheath 3, the pencil core that stretches out can be protected to protective sheath 3, no matter propelling pencil falls or collides, the pencil core that stretches out is difficult to rupture on the desktop, the pencil core of rupture just can not also be picked up to children, thereby avoid the pencil core of rupture among the propelling pencil to eat by mistake.

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.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a prevent mistake and gulp down propelling pencil of lead, includes body (1), its characterized in that: body (1) one end is provided with nib (2), nib (2) one end is provided with protective sheath (3), body (1) inside is provided with pencil core pipe (6), pencil core pipe (6) one end is fixed with cardboard (10), be provided with dog (8) on nib (2) inner wall, dog (8) with be provided with protection tube (9) between nib (2), nib (2) with be provided with baffle (13) between body (1), pencil core pipe (6) one end is stretched out from baffle (13), pencil core pipe (6) one end is provided with split tube (12), split tube (12) embedding is in locking hoop (11), baffle (13) with connect through spring (14) between cardboard (10).

2. The mechanical pencil of claim 1, wherein said mechanical pencil comprises: the protective tube (9) and the inner wall of the pencil lead tube (6) are adhered with rubber (7).

3. The mechanical pencil of claim 1, wherein said mechanical pencil comprises: the pen body (1) is connected with the pen point (2) through threads.

4. The mechanical pencil of claim 1, wherein said mechanical pencil comprises: the split pipe (12) is divided into three equal parts.

5. The mechanical pencil of claim 1, wherein said mechanical pencil comprises: the pencil lead tube (6) is characterized in that a key (4) is fixed at the tail of the pencil lead tube, and a clamping head (5) is fixed on the side face of the key (4).

6. The mechanical pencil of claim 1, wherein said mechanical pencil comprises: the locking hoop (11) is fixed on the baffle (13).

7. The mechanical pencil of claim 1, wherein said mechanical pencil comprises: the size of the pencil core tube (6) is 2.5 mm.

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