CN215243991U

CN215243991U - Core-replaceable pencil

Info

Publication number: CN215243991U
Application number: CN202121349806.3U
Authority: CN
Inventors: 梁宝文; 罗欣怡; 梁运卿; 罗伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-12-21
Anticipated expiration: 2031-06-17

Abstract

The utility model discloses a lead-replaceable pencil, include the pen-holder and be located the lead of pen-holder, the pen-holder is nib end and tail end respectively along length direction's both ends, set up flutedly and first breach on the terminal surface of tail end, the recess is close to the most advanced one side of pen and has seted up the through-hole, the both ends of lead are located recess and through-hole respectively, first breach is linked together with the recess, still includes lead push rod assembly, lead push rod assembly includes push rod and buckle combination, the push rod is located the recess, and the one end that is close to the through-hole is inconsistent with the lead, buckle combination can be dismantled with the outside of pen-holder and be connected, just pass first breach and link to each other with the push rod. The utility model provides a pair of interchangeable core pencil has simplified the inner structure of pen-holder, has reduced manufacturing cost.

Description

Core-replaceable pencil

Technical Field

The utility model relates to a pencil technical field, specifically speaking relates to a core-replaceable pencil.

Background

The pencil is a common writing or drawing tool, and consists of a penholder and a lead core in the penholder. The existing pencil has replaceable and non-replaceable lead cores, and in the use process of the pencil, along with the continuous consumption of the lead core, a pencil sharpener needs to be used for removing a pencil holder of the pencil, so that the use is inconvenient, and the pencil holder cannot be reused, thereby causing waste.

For the pencil with the replaceable lead core, when one lead core is used up, the other new lead core can be replaced, so that the pencil holder is convenient to use and saved, but the existing pencil with the replaceable lead core usually comprises a damping part, an elastic part, a key and other parts in the pencil holder, so that the structure is complex, and the production cost is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a core-replaceable pencil has simplified the inner structure of pen-holder, has reduced manufacturing cost.

The utility model discloses a technical scheme that interchangeable core pencil adopted is:

the utility model provides a lead-replaceable pencil, includes the pen-holder and is located the lead of pen-holder, the pen-holder is nib end and a tail end respectively along length direction's both ends, set up fluted and first breach on the terminal surface of tail end, the recess is close to the most advanced one side of pen and has seted up the through-hole, the both ends of lead are located recess and through-hole respectively, first breach and recess are linked together, still include lead push rod assembly, lead push rod assembly includes push rod and buckle combination, the push rod is located the recess, and the one end that is close to the through-hole is inconsistent with the lead, buckle combination can be dismantled with the outside of pen-holder and be connected, just pass first breach and link to each other with the push rod.

As preferred scheme, a plurality of draw-in groove has been seted up side by side along the length direction of pen-holder in the outside of pen-holder, interval between a plurality of draw-in groove equals, and equally divide and intersect with first breach respectively, the buckle combination includes the connecting rod and rotates the button of being connected with the connecting rod, the connecting rod links to each other with the push rod, the one end of button is equipped with the couple, the couple passes through the draw-in groove and is connected with the pen-holder.

As the preferred scheme, the key is connected with the connecting rod through the snap spring.

As a preferred scheme, a second notch is formed in the end face of the tail end of the pen, the second notch is communicated with the first notch, and the clamping groove and the first notch are located on one side, close to the pencil core, of the second notch.

As a preferred scheme, the pen cap is further included, the pen cap is sleeved on the pen holder and is in threaded connection with the pen holder, and the pen cap is close to the pen tip.

Preferably, the pen tip is conical.

The utility model discloses a core-replaceable pencil's beneficial effect is: when the pencil is used for writing, the tail end of the lead is propped by the push rod, so that the lead cannot be withdrawn from the tail end of the pencil, and meanwhile, due to the friction force between the through hole and the lead, the lead cannot be separated from the tip end of the pencil under the condition of no external pulling force; when the lead needs to be replaced, the buckle combination is separated from the pen holder, the push rod is pushed to the bottom of the groove by holding the buckle combination on the outer side of the pen holder, the lead is moved out of the groove, then the lead is pulled out of the through hole from the pen point end, the push rod is moved out of the pen tail end, a new lead is inserted into the through hole from the pen tail end through the groove, the push rod is pushed to the pen point end by holding the buckle combination on the outer side of the pen holder, the push rod pushes the lead in the groove to move together, and the buckle combination is clamped on the outer side of the pen holder until the lead is exposed out of the pen point end for a certain length, so that the replacement of the lead is completed; the pencil has the advantages that the normal use of the pencil is guaranteed, the pencil lead is convenient to replace, meanwhile, the internal structure of the pencil holder is simplified, and the production cost is reduced.

Drawings

Fig. 1 is a cross-sectional view of the lead-replaceable pencil of the present invention.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic view of a lead pushing rod assembly of the lead replaceable pencil of the present invention.

Fig. 4 is a schematic view of a holder of the lead-replaceable pencil of the present invention.

Fig. 5 is a sectional view taken along line B-B in fig. 4.

Detailed Description

The invention will be further elucidated and described with reference to the following embodiments and drawings in which:

referring to fig. 1 to 5, a lead replaceable pencil includes a pencil holder 10, a lead 20 and a lead push rod assembly 30, the two ends of the pencil holder 10 along the length direction are a pencil tip 11 and a pencil tail 12, the end surface of the pencil tail 12 is provided with a groove 13 and a first notch 14, one side of the groove 13 close to the pencil tip 11 is provided with a through hole 15, the two ends of the lead 20 are respectively located in the groove 13 and the through hole 15, the first notch 14 is communicated with the groove 13, the lead push rod assembly 30 includes a push rod 31 and a buckle assembly 32, the push rod 31 is located in the groove 13, one end close to the through hole 15 is abutted against the lead 20, the buckle assembly 32 is detachably connected with the outer side of the pencil holder 10 and passes through the first notch 14 to be connected with the push rod 31.

When the pencil is used for writing, the tail end of the lead 20 is propped by the push rod 31, so that the lead 20 cannot be withdrawn from the tail end 12 of the pencil, and meanwhile, the lead 20 cannot be separated from the pencil point 11 without external tension due to the friction between the through hole 15 and the lead 20;

when the lead 20 is used up for a period, the buckle assembly 32 is separated from the pen holder 10, the push rod 31 is pushed towards the pen point 11 along the groove 13 by holding the buckle assembly 32 outside the pen holder 10 with a hand, and after the lead 20 in the through hole 15 is exposed for a certain length, the push rod 31 is stopped being pushed, and the buckle assembly 32 is clamped outside the pen holder 10 until the lead 20 in the groove 13 is completely used up.

When the lead 20 in the groove 13 is completely used up, the lead 20 is pulled out from the through hole 15 from the pen point end 11, the snap combination 32 is separated from the pen holder 10, then the push rod 31 is moved out from the groove 13 through the pen tail end 12, a new lead 20 is inserted into the through hole 15 from the pen tail end 12 through the groove 13, the snap combination 32 outside the pen holder 10 is held by hand to push the push rod 31 to the pen point end 11 along the groove 13, the push rod 31 pushes the lead 20 in the groove 13 to move together, until the lead 20 is exposed out of the pen point end 11 for a certain length, the snap combination 32 is snapped outside the pen holder 10, and therefore the replacement of the lead 20 is completed.

The normal use of the pencil 20 is ensured, the replacement of the pencil lead 20 is convenient, the internal structure of the penholder 10 is simplified, and the production cost is reduced.

Because the main component of the lead core 20 is graphite which has good lubricity, the lead core 20 cannot be clamped in the through hole 15, the inner diameter of the through hole 15 is 0.08mm to 0.12mm larger than the outer diameter of the standard lead core 20, and the processing size can be easily controlled by the existing production process. The penholder 10 can be made of aluminum alloy, and because the expansion coefficients of graphite and aluminum alloy are very low, the dimensional change caused by weather change or hand-holding temperature change can be avoided; meanwhile, the expansion coefficient of graphite is lower than that of aluminum alloy, so that the lead core 20 cannot be inserted into the through hole 15 due to expansion is not worried about.

The outer side of the pen holder 10 is provided with a plurality of clamping grooves 16 in parallel along the length direction of the pen holder 10, the distance between the plurality of clamping grooves 16 is equal, and the clamping grooves are respectively intersected with the first notch 14, the buckle combination 32 comprises a connecting rod 321, a torsion spring and a key 322, the connecting rod 321 is connected with the push rod 31, the key 322 is connected with the rod 321 through the torsion spring, and one end of the key 322 is provided with a hook 323. When the key 322 is pressed away from the end provided with the hook 323, the end of the key 322 provided with the hook 323 tilts away from the clamping groove 16, so that the key 322 is separated from the penholder 10; when the hook 323 is located above the slot 16, the pressing of the key 322 is stopped, the end of the key 322 remote from the hook 323 is rotated to the side close to the pen holder 10 under the torsion of the torsion spring 322, so that the hook 323 is clamped in the slot 16, and the key 322 is connected with the pen holder 10.

When most people used the pencil, the length that lead 20 exposes was about 5mm to can set up the interval between a plurality of draw-in groove 16 to 5mm, every end that runs out of lead 20 promotes 5mm with push rod 31 forward, thereby the couple 323 is gone into next draw-in groove 16.

The end face of the pen tail end 12 is provided with a second gap 17, the second gap 17 is communicated with the first gap 14, and the clamping groove 16 and the first gap 14 are both positioned on one side of the second gap 17 close to the lead 20. Through the second gap 17, the end of the key 322 provided with the hook 232 is located in the second gap 17, which is beneficial to the more stable connection between the key 322 and the pen holder 10, and meanwhile, the area of the hook 323 clamped in the clamping groove 16 is increased.

The pen cap 40 is sleeved on the pen holder 10, external threads are formed on the outer side of the pen holder 10, internal threads are formed in the pen cap 40, so that the pen cap 40 is connected with the pen holder 10 through the threads, and the pen cap 40 is close to the pen tip 11. In order to increase the comfort of writing or holding the pen, the outer surface of the pen cap 40 can be made of soft and comfortable materials.

The pen point 11 is conical, which is convenient for the pencil user to check the written or drawn handwriting.

In summary, the groove 12 is formed in the pen holder 10, the push rod 31 is arranged in the groove 12, the buckle combination 32 is arranged outside the pen holder 10, a user holds the buckle combination 32 to push the push rod 31 in the groove 12, the push rod 31 pushes the lead core 20 again, and the push rod 31 is detachably connected with the pen holder 10 through the buckle combination 32, so that the normal use of the pencil is met, the lead core 20 is conveniently replaced, the mechanism inside the pen holder 10 is simplified, and the production cost is reduced.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a lead replaceable pencil, includes the pen-holder and is located the lead of pen-holder, the pen-holder is nib end and a tail end respectively along length direction's both ends, its characterized in that, set up fluted and first breach on the terminal surface of tail end, the recess is close to the most advanced one side of pen and has seted up the through-hole, the both ends of lead are located recess and through-hole respectively, first breach is linked together with the recess, still includes lead push rod assembly, lead push rod assembly includes push rod and buckle combination, the push rod is located the recess, and the one end that is close to the through-hole is inconsistent with the lead, buckle combination can be dismantled with the outside of pen-holder and be connected, just pass first breach and link to each other with the push rod.

2. The pencil with the replaceable lead of claim 1, wherein a plurality of slots are formed in the outer side of the pencil holder along the length direction of the pencil holder, the slots are spaced equally and intersect with the first notch, the locking assembly comprises a connecting rod and a key rotatably connected to the connecting rod, the connecting rod is connected to the push rod, and a hook is provided at one end of the key and connected to the pencil holder through the slots.

3. The lead-replaceable pencil of claim 2 wherein the button is connected to the connecting rod by a snap spring.

4. The pencil with the replaceable lead of claim 3, wherein the end face of the tail end of the pencil is provided with a second notch, the second notch is communicated with the first notch, and the clamping groove and the first notch are both positioned at one side of the second notch close to the lead.

5. The replaceable lead pencil of any one of claims 1 to 4 further comprising a cap, said cap being disposed over and threadably engaged with said barrel, said cap being disposed proximate to said tip of said pencil.

6. The replaceable lead pencil of any one of claims 1 to 4 wherein the tip of the pencil is conically shaped.