CN211519039U

CN211519039U - Propelling pencil capable of writing after lead core is broken

Info

Publication number: CN211519039U
Application number: CN201922278607.7U
Authority: CN
Inventors: 赵春香
Original assignee: Zhejiang Meijiada Stationery Co ltd
Current assignee: Zhejiang Meijiada Stationery Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-09-18
Anticipated expiration: 2029-12-18

Abstract

A mechanical pencil with a broken lead core and capable of writing comprises a pencil body, a pencil cap, a follow-up device and a damping piece. The lead body is used for sending the lead out towards the pen cap under the pressing action of external force and preventing the lead from being pressed back when the external force is removed. The accommodating cavity comprises a first accommodating section, a second accommodating section and a third accommodating section. The follow-up device comprises a lead core holding section and a fixing part. The outer diameter of the lead core holding section is equal to the inner diameter of the first accommodating section and extends out of the first accommodating section. The fixing portion includes a first diameter portion and a second diameter portion. The damping piece is used for preventing the follow-up device from sliding along the lead core when not subjected to external force. When the pencil core is broken under the action of overlarge pressure and then continues to write, the pencil core holding section retracts towards the pencil body under the pressure, but the pencil core cannot retract due to the fact that the pencil core is abutted by the pencil body, so that the writing can be continued.

Description

Propelling pencil capable of writing after lead core is broken

Technical Field

The utility model relates to a propelling pencil designs technical field, in particular to propelling pencil that lead has broken still can write.

Background

The known mechanical pencil is mainly a press type mechanical pencil, generally a press device is arranged at the top end, and when a lead is written, the lead is pushed out for use through a press action; in addition, there is a steel ball type mechanical pencil, which needs to swing up and down when the lead core is finished writing, and the gravity of the built-in steel ball is used to make the lead core descend for use.

The existing propelling pencils all have the common defect that the pencil core is too small (generally 0.5mm), so that the pencil core needs to be pressed or shaken up and down after a while to be written, so that the pencil core can be pushed out for continuous writing. However, it is troublesome and inconvenient to withdraw the entire lead core and replace it. In particular, in the conventional mechanical pencil, a plurality of leads are inserted into the holder for standby use, or the leads cannot be taken out after being broken carelessly, i.e., the leads are continuously filled into the holder, so that when a user presses or shakes the mechanical pencil to push out the leads, the leads cannot be pushed out due to the fact that the leads are clamped with each other at the pen point or the opening at the clamping position of the leads, most of the users are students in the country and primary schools, and the mechanical pencil is disassembled due to the fact that the leads cannot be pushed out, so that parts are scattered or even lost, and the mechanical pencil cannot be reassembled.

Therefore, most existing mechanical pencils are designed to focus on how to keep the lead as constant as possible during the writing process. However, for children, the pencil has poor control capability and heavy pressing force on the pencil, and the lead is frequently broken when the pencil is used, particularly the section extending out of the pencil cap is frequently broken. This affects the attention of children, and the attention of children is poor.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a mechanical pencil capable of writing even when the lead is broken, so as to satisfy the above requirements.

A propelling pencil with a broken lead and a writing function comprises a pencil body, a pencil cap arranged on the pencil body, a follow-up device accommodated in the pencil cap and a damping piece arranged in the follow-up device. The lead body is used for sending the lead out towards the pen cap under the pressing action of external force and preventing the lead from being pressed back when the external force is removed. The pen cap comprises an accommodating cavity. The containing cavity comprises a first containing section, a second containing section and a third containing section which is positioned between the first containing section and the second containing section on the axial section of the containing cavity. The follow-up device comprises a lead core holding section movably arranged in the first accommodating section in a penetrating mode and a fixing part used for fixing and guiding the lead core holding section to move. The outer diameter of the lead core holding section is equal to the inner diameter of the first accommodating section and extends out of the first accommodating section. The fixing part comprises a first diameter part accommodated in the third accommodating section and a second diameter part accommodated in the second accommodating section. The lead core holding section penetrates through the first diameter part, the outer diameter of the second diameter part is equal to the inner diameter of the second accommodating section, and the axial length of the second diameter part is smaller than that of the second accommodating section. The damping piece is accommodated in the first diameter part and used for preventing the follow-up device from sliding along the lead when the follow-up device is not subjected to external force.

Further, the pencil cap is screwed on the pencil body.

Further, the outer diameter of the lead holding section is equal to the inner diameter of the first diameter portion.

Further, the outer diameter of the first diameter part is equal to the diameter of the third accommodating section.

Further, the axial length of the first diameter part is equal to the axial length of the third accommodating section.

Further, the axial length of the lead holding section is larger than that of the first accommodating section.

Further, the lead holding section further includes a fixing section fixed in the second diameter portion.

Further, the damper is accommodated in the fixed section.

Further, the damping member is made of an elastic material.

Further, the follow-up device and the pencil body are arranged at intervals.

Compared with the prior art, the utility model provides a lead core has disconnected propelling pencil that still can write when the lead core is followed under too big pressure the lead core keeps the tip of section to break and when continuing to write, owing to write the custom, the pen generally all is inclined to the paper, consequently when writing the lead core keeps the section at first to contact the paper to make this lead core keep the section to retract towards the pencil body under pressure, nevertheless because the lead core by the pencil body is supported and is failed the withdrawal, consequently can continue to write. Meanwhile, in the writing process, the pencil lead holding section retracts into the pen cap under the propping of the paper surface along with the shortening of the pencil lead due to the use of the pencil lead, so that the purpose that the writing can still be performed after the pencil lead is broken is achieved. In order to achieve the above object, the present invention provides a mechanical pencil with a lead breaking function, which has the following device, wherein the following device has a lead holding section extending out of the pencil cap, and a fixing section fixedly connected to the lead holding section. The pencil core holding section is used for protecting and clamping the pencil core to prevent the pencil core from being broken, and the fixing part has two functions, namely, the pencil core holding section is used for fixing the pencil core holding section, and when the pencil core holding section is pressed to slide towards the pencil body, the pencil core holding section can be guided to ensure that the pencil core holding section slides along the axial direction of the pencil core holding section, so that the pencil core is prevented from being broken due to the change of direction. And the damping piece is used for preventing the follow-up device from retracting into the pencil cap under the action of gravity and the like when the pencil is not used, and enabling the lead holding section to extend out of the pencil cap along with the lead.

Drawings

Fig. 1 is a schematic structural view of a mechanical pencil provided by the present invention, which can still write when a lead is broken.

Fig. 2 is a sectional view of the lead of fig. 1 with the cap, follower, and damping member of the mechanical pencil still being writable assembled.

Fig. 3 is an exploded sectional view of the cap, follower, and damping member of the mechanical pencil of fig. 1 with the lead broken and still capable of writing.

Detailed Description

Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

As shown in fig. 1 to fig. 3, it is a schematic structural diagram of the mechanical pencil provided by the present invention with a broken lead core and capable of still writing. The mechanical pencil with the lead broken and capable of writing comprises a pencil body 10, a pencil cap 20 arranged on the pencil body 10, a follow-up device 30 accommodated in the pencil cap 20, and a damping piece 40 arranged in the follow-up device 30. It is contemplated that the mechanical pencil with the lead broken and still capable of writing may further include other functional modules, such as a hook, an anti-slip cover, etc., which are well known to those skilled in the art and will not be described herein.

The pencil body 10 is mainly composed of a pencil holder, a chuck (for blossom), a locking hoop, a spring and the like. When the core tube is pressed by finger, it overcomes the elastic force of spring and moves downwards to open the jaw of chuck, and the lead core is separated from its original position in the core tube by its own weight and moves a certain length along the wall of core-protecting tube under the control of damping ring of braking element. After the pressing pressure is released, the spring restores the original position, the lead core is automatically locked and positioned by the locking hoop and the chuck, and the primary pulse lead-out process is completed. The core can be continuously pulsated and taken out by repeating the steps. The pencil body 10 is prior art and will not be described herein. With the above-described conventional structure, the pencil body 10 can feed the lead toward the cap 20 by the pressing action of the external force and prevent the lead from being pressed back when the external force is removed. Even when an external force is applied to the lead, the lead is not pressed back into the core barrel.

The cap 20 is disposed on the pencil body 10, and specifically, the cap 20 may be screwed on a locking hoop of the pencil body 10. The cap 20 is generally conical in shape to accommodate the diameter of the lead while also preventing obstruction of vision, which is prior art and will not be described in detail herein. The cap 20 includes a receiving chamber 21. In a cross section along the axial direction of the pen cap 20, the receiving cavity 21 includes a first receiving section 211, a second receiving section 212, and a third receiving section 213 located between the first receiving section 211 and the second receiving section 212. The structure and the operation principle of the first, second and third receiving

sections

211, 212 and 213 will be described in detail with reference to the following device 30. Of course, it is conceivable that the receiving cavity 21 further includes a threaded section for threaded engagement with the locking band of the pencil body 10, and the description thereof is omitted here.

The follow-up device 30 is spaced apart from the pencil body 10 to keep a moving distance of the follow-up device 30. The follower 30 includes a lead holding section 31 movably inserted into the first receiving section 211, and a fixing section 32 for fixing and guiding the lead holding section. The lead holding section 31 is used for penetrating the lead and holding the lead to avoid being broken. The outer diameter of the lead core holding section 31 is equal to the inner diameter of the first receiving section 211 and extends out of the first receiving section 211, so that the axial length of the lead core holding section 31 is greater than the axial length of the first receiving section 211. The lead holding section 31 extends beyond the first receiving section 211 to a length that is consistent with writing habits. It is contemplated that the lead holding section 31 has an inner diameter comparable to the diameter of the lead. The fixing portion 32 includes a first diameter portion 321 received in the third receiving portion 213, and a second diameter portion 322 received in the second receiving portion 212. The lead holding section 31 passes through the first diameter portion 321 and is fixed in the first diameter portion 321, so that the outer diameter of the lead holding section 31 is equal to the inner diameter of the first diameter portion 321.

The first diameter portion 321 is accommodated in the third accommodating section 213, and the diameter and the axial length of the third accommodating section 213 are equal to the outer diameter and the axial length of the first diameter portion 321, so as to fix the first diameter portion 321. The second diameter portion 322 has an outer diameter larger than that of the first diameter portion 321, and is received in the second receiving section 212. The outer diameter of the second diameter portion 322 is equal to the inner diameter of the second receiving section 212 to fix the second diameter portion 322, but the axial length of the second receiving section 212 is greater than the second diameter portion 322, so that when the second diameter portion 322 is retracted into the receiving cavity 21 by the lead holding section 31, the second diameter portion 322 can still be fully or partially received in the second receiving section 212. Specifically, when the lead holding section 31 is fully pushed into the first receiving section 211, the second diameter portion 322 is still fully or partially retained or received in the second receiving section 211, so as to fix the relative position of the follower 30 and the pen cap 20 in the axial direction, i.e. ensure that the axial direction of the lead holding section 31 coincides with the axial direction of the pen cap 20, especially the first receiving section 211.

In order to fixedly mount the lead holding section 31 and make the axial direction of the lead holding section 31 coincide with the axial direction of the fixing portion 32, i.e. to ensure the coaxiality, the lead holding section 31 further comprises a fixing section 311, the fixing section 311 is fixed in the second diameter portion 322, i.e. the fixing section 311 and the lead holding section 31 are integrally formed, and the fixing portion 32 is integrally formed, so that the processing difficulty of the lead holding section 31 and the fixing portion 32 can be reduced, the respective coaxiality can be ensured, and the coaxiality when the lead holding section 31 and the fixing portion 32 are assembled together can be ensured. In order to fix the fixing section 311 and the second diameter portion 322, the fixing section 311 and the second diameter portion 322 may be fixed by glue or by interference fit.

The damping member 40 is made of an elastic material, such as rubber or resin. The damper 40 has a cylindrical structure and is accommodated in the first diameter portion 321. The diameter of the damping member 40 may be equal to the inner diameter of the first diameter portion 321. Of course, the first diameter portion 321 and the damping member 40 may be fixed by interference fit. In this embodiment, since the lead holding section 31 has the fixing section 311, the damping member 40 is fixed in the fixing section 311 by interference fit or glue. The damping member 40 should have an inner diameter slightly smaller than the diameter of the lead to clamp the lead for damping. Therefore, in practical use, the damping member 40 can prevent the follower 30 from sliding along the lead toward the pencil body 10 when no external force is applied.

Compared with the prior art, the utility model provides a lead core has disconnected propelling pencil that still can write when the lead core is followed under too big pressure the lead core keeps section 31's tip to break the back and when continuing to write, because write the custom, the pen generally all is inclined to the paper, consequently when writing lead core keeps section 31 at first contact paper to make this lead core keep section 31 withdraw towards pencil body 10 under pressure, nevertheless because the lead core by pencil body 10 is supported and is failed the withdrawal, consequently can continue to write. Meanwhile, in the writing process, the lead core holding section 31 retracts into the pen cap 20 under the propping of the paper surface when the lead core is shortened due to the use of the lead core, so that the purpose of still writing when the lead core is broken is achieved. In order to achieve the above object, the present invention provides a mechanical pencil with a lead broken and capable of still writing, which comprises the following device 30, wherein the following device 30 comprises a lead holding section 31 extending out of the cap 20, and a fixing section 32 fixedly connected to the lead holding section 31. The lead holding section 31 is used for protecting and clamping the lead to prevent the lead from being broken, and the fixing portion 32 has two functions, namely, the lead holding section 31 is used for fixing the lead holding section 31, and when the lead holding section 31 is pressed to slide towards the pencil body 10, the lead holding section 31 can be guided to ensure that the lead can slide along the axial direction of the lead holding section, so that the lead can be prevented from being changed in direction to break the lead. At the same time, the damping member 40 is used to prevent the follower 30 from retracting into the cap 20 under the action of gravity or the like when the pencil is not in use, and to make the lead holding section 31 extend out of the cap 20 with the lead.

The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.

Claims

1. A propelling pencil with a broken lead and capable of still writing is characterized in that: the propelling pencil with the broken lead core and the writing capability comprises a pencil body, a pencil cap arranged on the pencil body, a follow-up device accommodated in the pencil cap and a damping piece arranged in the follow-up device, wherein the pencil body is used for sending the lead core out towards the pencil cap under the pressing action of external force and preventing the lead core from being pressed back when the external force is removed, the pencil cap comprises an accommodating cavity, the accommodating cavity comprises a first accommodating section, a second accommodating section and a third accommodating section positioned between the first accommodating section and the second accommodating section on the axial section along the accommodating cavity, the follow-up device comprises a lead core holding section movably penetrating through the first accommodating section and a fixing part for fixing and guiding the movement of the lead core holding section, the outer diameter of the lead core holding section is equal to the inner diameter of the first accommodating section and extends out of the first accommodating section, the fixing part comprises a first diameter part accommodated in the third accommodating section and a second diameter part accommodated in the second accommodating section, the lead holding section penetrates through the first diameter part, the outer diameter of the second diameter part is equal to the inner diameter of the second accommodating section, the axial length of the second diameter part is smaller than that of the second accommodating section, and the damping part is accommodated in the second diameter part and used for preventing the follow-up device from sliding along the lead when not subjected to external force.

2. The mechanical pencil of claim 1 having a lead broken to allow writing, wherein: the pencil cap is screwed on the pencil body.

3. The mechanical pencil of claim 1 having a lead broken to allow writing, wherein: the outer diameter of the lead holding section is equal to the inner diameter of the first diameter portion.

4. The mechanical pencil of claim 1 having a lead broken to allow writing, wherein: the outer diameter of the first diameter part is equal to the diameter of the third accommodating section.

5. The mechanical pencil of claim 4 having a lead broken to allow writing, wherein: the axial length of the first diameter part is equal to the axial length of the third accommodating section.

6. The mechanical pencil of claim 1 having a lead broken to allow writing, wherein: the axial length of the lead core holding section is larger than that of the first accommodating section.

7. The mechanical pencil of claim 1 having a lead broken to allow writing, wherein: the lead holding section further includes a fixing section fixed in the second diameter portion.

8. The mechanical pencil of claim 7 having a lead broken to allow writing, wherein: the damper is accommodated in the fixed section.

9. The mechanical pencil of claim 1 having a lead broken to allow writing, wherein: the damping member is made of an elastic material.

10. The mechanical pencil of claim 1 having a lead broken to allow writing, wherein: the follow-up device and the pencil body are arranged at intervals.