CN114987087B - Propelling pencil and method for producing the same - Google Patents
Propelling pencil and method for producing the same Download PDFInfo
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- CN114987087B CN114987087B CN202210678564.5A CN202210678564A CN114987087B CN 114987087 B CN114987087 B CN 114987087B CN 202210678564 A CN202210678564 A CN 202210678564A CN 114987087 B CN114987087 B CN 114987087B
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- hole
- pen
- mechanical pencil
- pen holder
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- 238000009434 installation Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 13
- 238000009713 electroplating Methods 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 11
- 238000007747 plating Methods 0.000 claims description 10
- 238000004512 die casting Methods 0.000 claims description 6
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K21/00—Propelling pencils
- B43K21/02—Writing-core feeding mechanisms
- B43K21/08—Writing-core feeding mechanisms with the writing-cores fed by screws
- B43K21/085—Writing-core feeding mechanisms with the writing-cores fed by screws with a threaded propelling shank
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K21/00—Propelling pencils
- B43K21/24—Assembling, finishing, or repairing propelling pencils
Abstract
The invention discloses an automatic pencil and a production method thereof, wherein the automatic pencil comprises a pencil holder and a driving assembly, the pencil holder is provided with a mounting cavity, a pencil core pore canal and an operation hole, the pencil core pore canal penetrates through the writing end of the pencil holder, the pencil core pore canal is communicated with the mounting cavity, and the operation hole penetrates through the surface of the pencil holder and is communicated with the mounting cavity; the driving assembly comprises an ejection piece and an operating piece, wherein the ejection piece is movably arranged in the mounting cavity along the extending direction of the refill channel, when the ejection piece moves towards the writing end, the ejection piece is used for pushing out a pencil refill arranged in the refill channel from the writing end, the operating piece is arranged in the mounting cavity and exposed out of the operating hole, and the operating piece is connected with the ejection piece and used for driving the ejection piece to move along the extending direction of the refill channel; the pen holder is in flat arrangement and is provided with two opposite flat surfaces, and the two flat surfaces extend along the length direction of the pen holder. The mechanical pencil of the technical scheme of the invention can be conveniently clamped in books to carry.
Description
Technical Field
The invention relates to the technical field of pencils, in particular to an automatic pencil and a production method thereof.
Background
At present, the mechanical pencil on the market generally adopts a cylindrical shape or a prismatic shape, the external dimension of the mechanical pencil is too large, the diameter is too thick, the mechanical pencil is not convenient to carry when being clamped in a book, and the mechanical pencil can cause the problems of too thick book, breakage at the glue adding position in the book and the like, so that the mechanical pencil is very inconvenient to carry.
Disclosure of Invention
The invention mainly aims to provide an automatic pencil which is convenient to clamp in books for carrying.
To achieve the above object, the present invention provides a mechanical pencil comprising:
the pen comprises a pen holder, a pen core hole and a control device, wherein the pen holder is provided with an installation cavity, a pen core hole channel and an operation hole, the pen core hole channel penetrates through the writing end of the pen holder, the pen core hole channel is communicated with the installation cavity, and the operation hole penetrates through the surface of the pen holder and is communicated with the installation cavity;
the driving assembly comprises an ejection piece and an operating piece, the ejection piece is movably arranged in the mounting cavity along the extending direction of the refill channel, when the ejection piece moves towards the writing end, the ejection piece is used for pushing out a pencil refill arranged in the refill channel from the writing end, the operating piece is arranged in the mounting cavity and exposed out of the operating hole, and the operating piece is connected with the ejection piece and used for driving the ejection piece to move along the extending direction of the refill channel;
the pen holder is in a flat arrangement and is provided with two opposite flat surfaces, the two flat surfaces extend along the length direction of the pen holder, and the distance between the two flat surfaces is smaller than the width of the flat surfaces.
Optionally, the ejecting piece includes the screw rod, install in prevent changeing the slider of screw rod and connect in ejector pin of screw rod one end, prevent changeing the slider along the extending direction slidable mounting in the installation cavity in refill pore, the operating piece is equipped with the screw, the screw rod spiro union in the screw.
Optionally, the pen holder has a rear end opposite to the writing end, and the operation hole penetrates at least one of the flat surfaces and is located between the rear end and the writing end; and/or the number of the groups of groups,
the number of the anti-rotation sliding blocks is two, one anti-rotation sliding block is fixed at one end of the screw rod, which is connected with the ejector rod, and the other anti-rotation sliding block is connected with one end of the screw rod, which is far away from the ejector rod.
Optionally, the mechanical pencil further comprises a core protection pen point, wherein the core protection pen point is partially installed in the pen core hole channel, the other part of the core protection pen point extends out of the writing end, and the core protection pen point is provided with a through hole for extending out of the pencil core.
Optionally, the core protection pen point comprises a core protection head part and a limit pipe part connected with one end of the core protection head part, wherein the limit pipe part is installed in the pen core pore canal, and the core protection head part is far away from the limit pipe part and extends out of the writing end; wherein the head of the protective core is made of metal; and/or the limiting pipe part is made of plastic; the limiting pipe part is far away from one end of the core protection head part and is provided with an elastic structure with the periphery of the through hole, and the elastic structure is provided with elastic deformation facing to the axis of the through hole and is used for elastically abutting against a pencil core penetrating through the through hole.
Optionally, the mechanical pencil further comprises a fixing clip, the holder has a rear end opposite to the writing end, and the fixing clip is mounted on one of the flat surfaces and located at the rear end.
Optionally, the mechanical pencil further comprises a refill protection tube, wherein the refill protection tube is installed in the refill duct, and an inner hole of the refill protection tube is communicated with the installation cavity so that the ejection piece can be inserted.
Optionally, a portion of the pen holder near the writing end and two opposite sides of the flat surface are respectively provided with a holding recess, and the holding recesses are used for placing fingers of a user.
Optionally, the pen holder includes two shells that are flat setting, two shells amalgamate jointly and form the installation cavity with refill pore canal, arbitrary one shell face away from another shell one side all has one flat surface.
Optionally, one of the shells is provided with a positioning column, and the other shell is provided with a positioning hole in plug-in fit with the positioning column.
Optionally, the two shells are made of metal, and the two shells are welded and fixed.
Optionally, the thickness of the pen holder is greater than or equal to 2.5mm and less than or equal to 5.0mm.
Optionally, the width of the pen holder is greater than or equal to 6mm and less than or equal to 12mm.
Optionally, the length of the pen holder is greater than or equal to 8cm and less than or equal to 20cm.
The invention also provides a production method of the mechanical pencil, which comprises the following steps:
providing a pen holder, wherein the pen holder comprises two flat shells, the two shells are spliced together to form a mounting cavity and a pen core pore canal, and at least one shell is provided with an operation hole communicated with the mounting cavity;
providing a driving assembly, wherein the driving assembly comprises an ejection piece and an operation piece for driving the ejection piece to move;
installing a driving assembly between the two shells, wherein the ejection piece and the operation piece are installed in an installation cavity formed by jointly splicing the two shells, and the operation piece is operated Kong Xianlou;
and fixing the two shells.
Optionally, in the step of providing the pen holder, the shell is formed by one or more of a die casting die, a sheet metal stamping die, a profile extrusion die, a sheet metal laser cutting device and a numerical control processing device;
optionally, in the step of mounting a driving assembly between two of the housings, the method comprises the steps of:
horizontally positioning one of the shells;
mounting the drive assembly in a corresponding position on the housing;
the other housing is capped to the housing in which the drive assembly has been placed.
Optionally, in the step of fixing the two housings, the steps of:
compressing both of the shells;
performing laser welding on a gap between the two shells;
optionally, after the step of fixing the two housings, the method further comprises the steps of:
and carrying out surface treatment on the assembled mechanical pencil.
Optionally, the step of performing surface treatment on the assembled mechanical pencil includes the following steps:
polishing the welding position on the shell;
electroplating the whole mechanical pencil;
optionally, the step of electroplating the whole mechanical pencil includes the steps of:
carrying out hanging point chromium plating treatment on the surface of the whole mechanical pencil;
and carrying out vacuum plating treatment on the whole mechanical pencil so as to color the mechanical pencil.
According to the technical scheme, the pen holder is arranged in a flat mode, so that the thickness of the pen holder is small, when the flat pen holder is clamped in a book, the situation that the thickness of the book is too thick and a glue adding part inside the book is broken due to the fact that the size of the pen holder is too large can be avoided due to the fact that the thickness of the pen holder is small, and the mechanical pencil can be conveniently clamped in the book to carry. The flat pen holder can effectively prevent the mechanical pencil from rotating when being held for writing, so that the pen holding posture of a user can be well kept in a proper state when the user uses the mechanical pencil for writing, and the pen holder is favorable for cultivating the fixation and habituation of personal handwriting writing.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an embodiment of a mechanical pencil of the present invention;
FIG. 2 is an exploded view of the mechanical pencil of FIG. 1;
FIG. 3 is an exploded view of the drive assembly of FIG. 2;
FIG. 4 is a cross-sectional view of the mechanical pencil of FIG. 1;
FIG. 5 is an enlarged view of FIG. 4 at A;
FIG. 6 is an enlarged view at B in FIG. 4;
FIG. 7 is a schematic view of the tip of the guard core of FIG. 1;
FIG. 8 is a schematic view of the core-protecting nib of FIG. 7 at another angle;
FIG. 9 is a flow chart of an embodiment of a method for producing the mechanical pencil of the present invention.
Reference numerals illustrate:
10. a penholder; 101. a mounting cavity; 102. a cartridge duct; 11. a housing; 111. a groove structure; 112. a flat surface; 113. an operation hole; 114. positioning columns; 115. positioning holes; 12. a writing end; 13. a rear end; 14. a holding concave portion; 20. a drive assembly; 21. an ejector; 211. a screw; 212. a push rod; 213. an anti-rotation sliding block; 214. a mounting shoulder; 22. an operating member; 30. a cartridge protecting tube; 40. a core-protecting pen point; 41. protecting the head of the core; 42. a limiting pipe part; 421. an elastic structure; 50. and fixing the pen clip.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "a and/or B", including a scheme, or B scheme, or a scheme that is satisfied by both a and B. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides an automatic pencil, which is used for writing or drawing by a user.
In the embodiment of the present invention, as shown in fig. 1 to 9, the mechanical pencil includes a barrel 10 and a driving assembly 20, the barrel 10 is provided with a mounting cavity 101, a cartridge passage 102 and an operation hole 113, the cartridge passage 102 penetrates through a writing end 12 of the barrel 10, the cartridge passage 102 communicates with the mounting cavity 101, and the operation hole 113 penetrates through a surface of the barrel 10 and communicates with the mounting cavity 101.
The driving assembly 20 includes a push-out member 21 and an operating member 22, wherein the push-out member 21 is movably mounted in the mounting cavity 101 along the extending direction of the cartridge hole 102, the push-out member 21 is used for pushing out the pencil lead provided in the cartridge hole 102 from the writing end 12 when the push-out member 21 moves towards the writing end 12, the operating member 22 is mounted in the mounting cavity 101 and is exposed from the operating hole 113, and the operating member 22 is connected with the push-out member 21 for driving the push-out member 21 to move along the extending direction of the cartridge hole 102.
The pen holder 10 is flat, and has two opposite flat surfaces 112, wherein the two flat surfaces 112 extend along the length direction of the pen holder 10, and the distance between the two flat surfaces 112 is smaller than the width of the flat surfaces 112. I.e., the thickness of the cartridge 10 is smaller than the width of the cartridge 10.
After the pencil lead is placed in the pencil lead hole channel 102, the ejector piece 21 can be driven by the operating piece 22 to move towards the writing end 12 during use, so that the pencil lead arranged in the pencil lead hole channel 102 can be pushed out from the writing end 12, and the ejector piece 21 can be stretched into the pencil lead hole channel 102, so that after the pencil lead is shortened, the pencil lead can be pushed out from the writing end 12 through the ejector piece 21 stretching into the pencil lead hole channel 102.
According to the technical scheme, the pen holder 10 is arranged in a flat mode, so that the thickness of the pen holder 10 is small, when the flat pen holder 10 is clamped in a book, the situation that the thickness of the book is too thick and a glue adding part inside the book is broken due to the fact that the size of the pen holder 10 is too large can be avoided due to the fact that the thickness of the pen holder 10 is small, and the mechanical pencil can be conveniently clamped in the book to carry. The flat pen holder 10 can effectively prevent the rotation of the mechanical pencil during holding, so that the pen holding posture of a user can be well kept in a proper state during writing by using the mechanical pencil, and the fixation and habituation of writing of personal handwriting can be conveniently cultivated.
In some embodiments, the mechanical pencil further includes a lead protection tube 30, the lead protection tube 30 being mounted in the lead opening 102, an inner hole of the lead protection tube 30 being in communication with the mounting cavity 101 for the ejection member 21 to extend. Specifically, the cartridge protecting tube 30 is fixed in the cartridge passage 102, and in use, the pencil is placed in the cartridge protecting tube 30. Thus, when the mechanical pencil falls down carelessly in the use process, the pencil lead protection tube 30 can play a role in protecting, and the risk of breakage caused by bending deformation of the pencil lead when the mechanical pencil falls down can be reduced.
In some embodiments, the ejector 21 includes a screw 211, an anti-rotation slider 213 mounted on the screw 211, and a push rod 212 connected to one end of the screw 211, where the anti-rotation slider 213 is slidably mounted in the mounting cavity 101 along the extending direction of the cartridge hole 102, and the operating member 22 is provided with a screw hole, and the screw 211 is screwed in the screw hole. Specifically, the anti-rotation slider 213 is in non-rotating fit with the mounting cavity 101, that is, the anti-rotation slider 213 cannot rotate in the mounting cavity 101 and can only be slidably mounted in the mounting cavity 101 along the extending direction of the cartridge hole 102. The operation member 22 is cylindrical, and the operation member 22 is rotatably installed at the operation hole 113, so that the operation member 22 can be rotated at the operation hole 113, and the screw 211, the push rod 212, and the rotation preventing slider 213 can be moved toward the writing end 12 in the extending direction of the cartridge hole 102 because the operation member 22 cannot be moved in the extending direction of the cartridge hole 102 due to the restriction of the operation hole 113, and the pencil lead provided in the cartridge hole 102 can be pushed out from the writing end 12. When the pencil is consumed and the pencil needs to be replenished, the operating member 22 is rotated reversely to move the ejection member 21 away from the writing end 12, and then the pencil is inserted into the pencil hole 102 from the writing end 12. Therefore, the structure of the driving assembly 20 is simple, the occupied space of the driving assembly 20 in the pen holder 10 is small, and the thickness of the propelling pencil can be reduced.
Of course, in other embodiments, the operation hole 113 may be provided in a long strip shape extending along the extending direction of the pen core hole 102, so that the operation member 22 is slidably mounted in the operation hole 113 along the length direction of the operation hole 113, so as to drive the ejector 21 to move by pulling the movement of the operation member 22. In addition, in other embodiments, the operation hole 113 may be disposed at a rear end 13 of the barrel 10 opposite to the writing end 12, the operation member 22 is rotatably mounted in the operation hole 113 and extends out of the rear end 13 of the barrel 10, a threaded cylinder is connected to a portion of the operation member 22 located in the mounting cavity 101, and an end of the screw 211 remote from the ejector rod 212 is screwed into the threaded cylinder.
In some embodiments, the outer peripheral surface of the operating member 22 is provided with a plurality of anti-slip protrusions extending along the extending direction of the screw holes, so that the possibility of slipping of fingers can be reduced when the operating member 22 is rotated.
In some embodiments, the screw 211 and the ejector rod 212 are integrally formed, so that the screw 211 and the ejector rod 212 have better coaxiality and higher precision. In addition, the assembling process of the screw 211 and the ejector rod 212 can be reduced, and the structure of the ejector 21 can be simplified. Optionally, the diameter of the ejector rod 212 is smaller than the diameter of the screw 211, so that the size of the ejector rod 212 is close to the size of the pen pinching pen core, and thus the size of the pen core hole 102 is smaller, and in the case that the size of the pen holder 10 is limited (the thickness of the pen holder 10 is greater than or equal to 2.5mm and less than or equal to 5.0 mm), the structural strength of the pen holder 10 is improved. And the diameter of the screw rod 211 is larger, so that the possibility of complete deformation in the process of matching the screw rod 211 with the operation piece 22 can be reduced, and the stable structure and the reliable movement of the driving assembly 20 are ensured.
In some embodiments, a mounting shoulder 214 is provided at the connection between the screw 211 and the ejector rod 212, the size of the mounting shoulder 214 is larger than that of the ejector rod 212 and smaller than that of the screw 211, and the anti-rotation slider 213 is sleeved on the mounting shoulder 214. Therefore, the positioning and the installation of the anti-rotation sliding block 213 can be facilitated, and meanwhile, the structural strength of the installation part of the anti-rotation sliding block 213 can be high.
In some embodiments, the barrel 10 has a rear end 13 opposite the writing end 12, and the operating aperture 113 extends through at least one flat surface 112 and is located between the rear end 13 and the writing end 12. That is, the operation hole 113 is located at the middle section of the pen holder 10 or near the middle section, so that the user can hold the pen holder 10 with one hand and simultaneously can make the operation member 22 approximately located at the thumb and index finger of the user, thereby facilitating the rotation of the operation member 22 by the index finger and thumb of the palm of the user holding the pen holder 10, and facilitating the pushing out of the pencil core with one hand of the user, and improving the convenience of use of the mechanical pencil.
In this embodiment, the operation hole 113 penetrates through the two flat surfaces 112, so that the operation member 22 can extend from two opposite sides of the pen holder 10, and thus, while the user can rotate the operation member 22 better, the protruding height of the operation member 22 compared with the flat surfaces 112, namely, the maximum thickness of the mechanical pencil at the operation member 22, namely, the diameter of the operation member 22, can be reduced, and thus, the thickness space of the pen holder 10 can be fully utilized for the operation member 22 to be installed, and the situation that the thickness of the mechanical pencil at the operation member 22 is too large can be avoided.
In some embodiments, the number of anti-rotation blocks 213 is two, wherein one anti-rotation block 213 is fixed to one end of the screw 211 connected to the ejector rod 212, and the other anti-rotation block 213 is connected to one end of the screw 211 away from the ejector rod 212. Through the arrangement of the two anti-rotation sliding blocks 213, the ejector 21 can slide in the mounting cavity 101 more stably, the situation that the matching length of the screw 211 and the operating piece 22 is shortened due to the arrangement of the two anti-rotation sliding blocks 213 can be avoided, and the ejector 21 can slide in the mounting cavity 101 stably, and meanwhile, the matching length of the screw 211 and the operating piece 22 is longer, so that the ejector 21 has a longer movement stroke.
In some embodiments, the mechanical pencil further includes a core guard tip 40, a portion of the core guard tip 40 is mounted in the core opening 102, another portion extends from the writing end 12, and the core guard tip 40 is provided with a through hole through which the pencil core extends. So configured, the portion of the pencil lead extending out can be protected by the pencil lead protection tip 40, reducing the risk of breakage of the pencil lead during writing. And through setting up core protection nib 40 and the components of a whole that can function independently of pen-holder 10, can be convenient for the shaping of individual core protection nib 40, can control the structural strength and the precision of core protection nib 40 better, can simplify the structure of pen-holder 10 moreover, reduce the shaping degree of difficulty of pen-holder 10.
In some embodiments, the core-protecting nib 40 includes a core-protecting head 41 and a limiting tube 42 connected to one end of the core-protecting head 41, the limiting tube 42 is installed in the pen core hole 102, the core-protecting head 41 extends from the writing end 12 away from the limiting tube 42, and the core-protecting head 41 is made of metal. This can make the structural strength of the core-protecting head 41 high, and can better protect the pencil core. In this embodiment, the limiting tube 42 is provided with a limiting portion protruding laterally, the cartridge hole 102 is provided with a limiting groove, and the limiting portion is clamped in the limiting groove to limit the limiting tube 42 in the cartridge hole 102.
In some embodiments, the limiting tube 42 is made of plastic, and an elastic structure 421 is disposed at an end of the limiting tube 42 away from the core protecting head 41 and on a peripheral side of the through hole, and the elastic structure 421 has elastic deformation toward the axis of the through hole for elastically abutting against the pencil lead passing through the through hole. That is, when the pencil lead passes through the limit pipe portion 42, the elastic structure 421 can be abutted against the outer circumferential surface of the pencil lead, thereby having the effect of clamping the pencil lead and reducing the possibility of the pencil lead falling off from the writing end 12.
In some embodiments, the portion of the barrel 10 near the writing end 12 is provided with a holding recess 14 on opposite sides of the flat surface 112, the holding recess 14 being configured for placement by a user's fingers. That is, when the user holds the pen holder 10, the index finger can be placed in the holding recess 14 on one side of the pen holder 10, and the thumb can be placed in the holding recess 14 on the other side of the pen holder 10, so that the user can hold the pen holder 10 in a positioning manner. By adopting the arrangement of the flat pen holder 10 and the holding concave part 14, the situation of rotation during holding the mechanical pencil for writing can be effectively prevented, so that the pen holding posture of a user during writing by using the mechanical pencil can be well kept in a proper state, and the fixation and habituation of writing of personal handwriting can be conveniently cultivated.
In some embodiments, the pen 10 includes two housings 11 arranged in a flat configuration, where the two housings 11 are jointly spliced to form the mounting cavity 101 and the cartridge channel 102, and a flat surface 112 is provided on a side of either housing 11 facing away from the other housing 11. Specifically, each housing 11 is provided with a groove structure 111, and when the two housings 11 are spliced together, the groove structures 111 of the two housings 11 are spliced together to form the mounting cavity 101 and the cartridge hole 102. By adopting the two shells 11 which are arranged flatly, the pen shell is simple in structure, convenient to process and shape, convenient to assemble and beneficial to reducing production cost. Of course, in other embodiments, a sealing member that communicates with the mounting opening of the mounting cavity 101 and seals the mounting opening may be provided at the rear end 13 of the barrel 10, and the ejector member 21 and the operating member 22 may be installed into the mounting cavity 101 from the mounting opening.
In some embodiments, one of the housings 11 is provided with a locating post 114 and the other housing 11 is provided with a locating hole 115 for mating with the locating post 114. Through the setting of reference column 114 and locating hole 115 like this, when amalgamating two casings 11, can make two casings 11 position the assembly better, can promote the mechanical pencil assembly accuracy.
In some embodiments, the two shells 11 are made of metal, and the two shells 11 are welded and fixed. This can make the two housings 11 firmly fixed. Of course, in other embodiments, the two housings 11 may be adhesively fixed (in which case the housing 11 may be made of metal or plastic), or the two housings 11 may be fixed by screws (in which case the housing 11 may be made of metal or plastic).
In some embodiments, the mechanical pencil further includes a fixed clip 50, the barrel 10 having a rear end 13 opposite the writing end 12, the fixed clip 50 being mounted to one of the flat surfaces 112 and being located at the rear end 13. Specifically, the fixed pen clip 50 is located at the side of the rear end 13 of the pen holder 10, that is, the fixed pen clip 50 is located on the flat surface 112, so that the risk of dropping the mechanical pencil during carrying can be reduced by clamping the fixed pen clip 50 in the book, and the mechanical pencil can be more conveniently carried in the book.
In some embodiments, the thickness of the barrel 10 (the spacing between the two flat surfaces 112) is greater than or equal to 2.5mm and less than or equal to 5.0mm. Specifically, if the thickness of the pen holder 10 is greater than 5mm, when the mechanical pencil is clamped in a book, the risk of breakage at the glue adding position inside the book is greatly increased, and the mechanical pencil is inconvenient to clamp in the book for carrying. If the thickness of the pen holder 10 is less than 2.5mm, the internal space of the pen holder 10 is too small, so that the size of the ejection member 21 is too small, deformation of the ejection member 21 is easy to occur, and the structural strength and rigidity of the pen holder 10 are greatly reduced, so that the risk of bending deformation of the pen holder 10 is greatly increased. When the thickness of the penholder 10 is set between 2.5mm and 5.0mm (including the number), the structural strength and the rigidity of the penholder 10 can be higher while the thickness of the penholder 10 is moderate, the possibility of the occurrence of the problems can be effectively reduced, and the comprehensive performance of the mechanical pencil is better. Of course, in other embodiments, the thickness of the barrel 10 may be greater than 5mm and less than or equal to 7mm, or the thickness of the barrel 10 may be greater than or equal to 2mm and less than 2.5mm.
In some embodiments, the width of the barrel 10 is greater than or equal to 6mm and less than or equal to 12mm; specifically, if the width of the pen holder 10 is greater than 12mm, the pen holder 10 is too wide, which is inconvenient for the user to hold, and the comfort level of use is greatly reduced. If the width of the pen holder 10 is smaller than 6mm, the pen holder 10 is too narrow, and under the condition that the pen holder 10 is arranged flatly, the too narrow pen holder 10 is inconvenient for a user to hold, meanwhile, the structural strength and rigidity of the pen holder 10 are greatly reduced, and the risk of bending deformation of the pen holder 10 is greatly increased. When the width of the penholder 10 is set between 6mm and 12mm (including the number), the structural strength and the rigidity of the penholder 10 can be high while the comfort of the penholder 10 is high, the possibility of the occurrence of the problems can be effectively reduced, and the comprehensive performance of the mechanical pencil is high. Of course, in other embodiments, the width of the barrel 10 may be greater than 12mm and less than or equal to 14mm, or the thickness of the barrel 10 may be greater than or equal to 4mm and less than 6mm.
In some embodiments, the length of the barrel 10 is greater than or equal to 8cm and less than or equal to 20cm. Specifically, if the length of the pen holder 10 is less than 8cm, the pen holder 10 will be too short, so that the length of the pen holder 10 for holding the pencil lead is smaller, the single writing amount of the mechanical pencil is greatly reduced, the pencil lead needs to be frequently replenished, and the use experience is poor. If the length of the pen holder 10 is greater than 20cm, the pen holder 10 is too long, and the pen holder is inconvenient to carry. When the length of the penholder 10 is set between 8cm and 20cm (including the number), the problem that the penholder 10 is inconvenient to carry due to overlong penholder 10 can be avoided while the single writing amount of the penholder 10 is large, the possibility of the occurrence of the problem can be effectively reduced, and the comprehensive performance of the mechanical pencil is good. Of course, in other embodiments, the length of the barrel 10 may be greater than 20mm and less than or equal to 22mm, or the thickness of the barrel 10 may be greater than or equal to 6mm and less than 8mm.
The invention also provides a method for producing the mechanical pencil, referring to fig. 3, comprising the following steps:
step S10, providing a pen holder 10, wherein the pen holder 10 comprises two flat shells 11, the two shells 11 are jointly spliced to form a mounting cavity 101 and a cartridge duct 102, and at least one shell 11 is provided with an operation hole 113 communicated with the mounting cavity 101.
In step S10, the material of the housing 11 may be metal (e.g. aluminum alloy, stainless steel, etc.), plastic or composite material, etc.
Step S20, providing a driving assembly 20, wherein the driving assembly 20 includes an ejector 21 and an operating member 22 for driving the ejector 21 to move.
In step S20, the ejector 21 may alternatively include a screw 211, an anti-rotation slider 213 mounted to the screw 211, and an ejector pin 212 connected to one end of the screw 211. Of course, in other embodiments, the operation hole 113 may be provided in a long strip shape extending along the extending direction of the pen core hole 102, so that the operation member 22 is slidably mounted in the operation hole 113 along the length direction of the operation hole 113, so as to drive the ejector 21 to move by pulling the movement of the operation member 22. In addition, in other embodiments, the operation hole 113 may be disposed at a rear end 13 of the barrel 10 opposite to the writing end 12, the operation member 22 is rotatably mounted in the operation hole 113 and extends out of the rear end 13 of the barrel 10, a threaded cylinder is connected to a portion of the operation member 22 located in the mounting cavity 101, and an end of the screw 211 remote from the ejector rod 212 is screwed into the threaded cylinder.
In step S30, the driving assembly 20 is installed between the two housings 11, wherein the ejector 21 and the operating member 22 are installed in the installation cavity 101 formed by jointly splicing the two housings 11, and the operating member 22 is exposed from the operating hole 113.
In step S30, each housing 11 is provided with a groove structure 111, and when the two housings 11 are assembled together, the groove structures 111 of the two housings 11 are jointly assembled to form the mounting cavity 101 and the cartridge hole 102, the driving assembly 20 may be first mounted on one of the housings 11, and the housing 11 on which the driving assembly 20 is mounted may be covered by the other housing 11.
Step S40, fixing the two housings 11.
Through adopting two shells 11 of flat setting like this, can make the simple structure of pen shell, the shaping of being convenient for, and the equipment of being convenient for is favorable to reducing manufacturing cost. Moreover, the pen holders 10 formed by splicing the two shells 11 are arranged flatly, so that the thickness of the pen holders 10 is smaller, and when the flatly-shaped pen holders 10 are clamped in books, the situation that the thickness of the books is too thick and the glue adding positions in the books are broken due to the fact that the thickness of the pen holders 10 is smaller can be avoided due to the fact that the size of the pen holders 10 is too large, and the mechanical pencil can be conveniently clamped in the books to be carried.
In some embodiments, in step S10, the housing 11 is formed by one or more of a die casting die, a sheet metal stamping die, a profile extrusion die, a sheet metal laser cutting device, and a numerical control machining device.
Specifically, the housing 11 may be die-cast by a die-casting machine and a die-casting die; or, the housing 11 is formed by punching with a punching machine and a sheet metal punching die; or the shell 11 is formed by sheet metal laser cutting equipment; or the shell 11 is molded by a profile molding device and a profile extrusion die; alternatively, the housing 11 is milled by a numerical control machining device. Or the shell 11 is formed by two or two processes of a die casting die, a sheet metal stamping die, a section bar extrusion die, a sheet metal laser cutting device and a numerical control machining device. Thus being convenient for molding and being beneficial to mass production.
In step S30, the following steps are included:
step S31, horizontally positioning one of the housings 11. Specifically, the side of the housing 11 provided with the groove may be placed on the assembling apparatus upward so that the surface of the housing 11 that contacts the other housing 11 is placed horizontally.
Step S32, mounting the driving assembly 20 at a corresponding position on the shell 11; specifically, the ejector 21 and the operating member 22 may be assembled to form the driving assembly 20, and then the driving assembly 20 may be integrally placed on the horizontally positioned housing 11.
In step S33, the other housing 11 is covered with the housing 11 in which the driving assembly 20 has been placed. Specifically, when the two housings 11 are joined together, the drive assembly 20 is housed in the mounting chamber 101 formed by joining together the two housings 11.
This facilitates assembly and reduces the risk of the drive assembly 20 falling from the housing 11 during assembly.
In some embodiments, in step S40, the following steps are included:
step S41, compressing the two shells 11; specifically, the two housings 11 can be clamped by a jig on an assembly tool, ensuring proper alignment of the two housings 11.
Step S42, performing laser welding on a gap between the two shells 11; specifically, the gap between the two shells 11 is welded by the laser welding equipment, so that the two shells 11 can be ensured to be firmly fixed, and welding marks are small during laser welding, so that subsequent appearance treatment is facilitated.
In some embodiments, one of the housings 11 is provided with a locating post 114 and the other housing 11 is provided with a locating hole 115 for mating with the locating post 114, the locating hole 115 extending through the flat surface 112 of the housing 11. This allows the positioning posts 114 to be exposed through the positioning holes 115 when the two housings 11 are assembled together.
After step S42, the method further comprises the steps of:
and step S43, filling and welding the positioning holes 115. Therefore, the positioning column 114 on one shell 11 can be welded with the other shell 11, the connection stability of the two shells 11 can be improved, and gaps at the positioning holes 115 can be avoided by filling the positioning holes 115.
In some embodiments, after step S40, the following steps are further included:
and S50, performing surface treatment on the assembled mechanical pencil. Specifically, the mechanical pencil may be subjected to coloring, polishing, etc. to make the mechanical pencil more excellent in appearance.
In some embodiments, in step S50, the following steps are included:
step S51, polishing the welding position on the shell 11; specifically, the welding position on the housing 11 may be polished by polishing equipment or manually, for example, by a CNC polisher, so that the outer surface of the pen holder 10 is smooth, the problem of burrs and the like is avoided, and the subsequent electroplating treatment is also facilitated.
Step S52, electroplating the whole mechanical pencil; therefore, the penholder 10 can be colored, the outer side of the penholder 10 is smoother and more attractive, and the plating structure at the outer side of the propelling pencil is stable and is not easy to fall off by adopting an electroplating mode.
In some embodiments, in step S52, the following steps are included:
step S521, carrying out hanging point chromium plating treatment on the surface of the whole mechanical pencil; the whole mechanical pencil is subjected to surface chromium plating treatment of hanging points in a traditional electroplating mode.
In step S522, the entire mechanical pencil is subjected to a vacuum plating process to color the mechanical pencil. Specifically, when the whole mechanical pencil is electroplated by a vacuum electroplating technology, electroplating materials with corresponding colors can be selected, and after the vacuum electroplating is finished, the whole mechanical pencil can be colored. Wherein, the appearance color of the propelling pencil can be gold, silver, black, white or other colors.
Therefore, the surface of the propelling pencil is firstly subjected to the hanging point chromium plating treatment and then is subjected to the vacuum electroplating coloring treatment, so that the coloring effect of the color layer outside the propelling pencil is good, and the plating layer structure is stable.
In some embodiments, after step S50, the following steps are further included:
step S60, providing a pen clip and a fastening screw;
in step S70, the clip is fixed to the rear end 13 of the barrel 10 by fastening screws.
Specifically, the fixed pen clip 50 is located at the side of the rear end 13 of the pen holder 10, that is, the fixed pen clip 50 is located on the flat surface 112, so that the risk of dropping the mechanical pencil during carrying can be reduced by clamping the fixed pen clip 50 in the book, and the mechanical pencil can be more conveniently carried in the book.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (9)
1. A mechanical pencil, comprising:
the pen comprises a pen holder, a pen core hole and a control device, wherein the pen holder is provided with an installation cavity, a pen core hole channel and an operation hole, the pen core hole channel penetrates through the writing end of the pen holder, the pen core hole channel is communicated with the installation cavity, and the operation hole penetrates through the surface of the pen holder and is communicated with the installation cavity;
the driving assembly comprises an ejection piece and an operating piece, the ejection piece is movably arranged in the mounting cavity along the extending direction of the refill channel, when the ejection piece moves towards the writing end, the ejection piece is used for pushing out a pencil refill arranged in the refill channel from the writing end, the operating piece is arranged in the mounting cavity and exposed out of the operating hole, and the operating piece is connected with the ejection piece and used for driving the ejection piece to move along the extending direction of the refill channel;
the pen holder is in a flat arrangement and is provided with two opposite flat surfaces, the two flat surfaces extend along the length direction of the pen holder, and the interval between the two flat surfaces is smaller than the width of the flat surfaces;
the thickness of the pen holder is greater than or equal to 2.5mm and less than or equal to 5.0mm, and the width of the pen holder is greater than or equal to 6mm and less than or equal to 12mm;
the pen comprises a pen holder, a flat surface and a plurality of holding concave parts, wherein the pen holder is provided with a plurality of holding concave parts which are arranged on the opposite sides of the flat surface and are used for holding fingers of a user;
the mechanical pencil also comprises a core protection pencil point, wherein the core protection pencil point is partially arranged in the pencil core pore canal, the other part of the core protection pencil point extends out of the writing end, and the core protection pencil point is provided with a through hole for extending out of the pencil core;
the core protection pen point comprises a core protection head part and a limiting pipe part connected to one end of the core protection head part, the limiting pipe part is arranged in the pen core pore canal, and the core protection head part is far away from the limiting pipe part and extends out of the writing end; an elastic structure is arranged at one end of the limiting pipe part, which is far away from the head part of the pencil lead, and at the periphery of the through hole, and the elastic structure has elastic deformation towards the axis of the through hole and is used for elastically abutting against the pencil lead passing through the through hole;
the ejection piece comprises a screw rod, an anti-rotation sliding block arranged on the screw rod and a top rod connected to one end of the screw rod, the anti-rotation sliding block is slidably arranged in the mounting cavity along the extending direction of the refill duct, the operation piece is provided with a screw hole, and the screw rod is in threaded connection with the screw hole;
the screw rod with ejector pin integrated into one piece, the diameter of ejector pin is less than the diameter of screw rod, the screw rod with the junction of ejector pin is equipped with the installation shoulder, the size of installation shoulder is greater than the size of ejector pin, and is less than the size of screw rod, prevent changeing the slider cover and locate the installation shoulder.
2. The mechanical pencil of claim 1 wherein said barrel has a rear end opposite said writing end, said handling aperture extending through at least one of said flat surfaces and being located between said rear end and said writing end; and/or the number of the groups of groups,
the number of the anti-rotation sliding blocks is two, one anti-rotation sliding block is fixed at one end of the screw rod, which is connected with the ejector rod, and the other anti-rotation sliding block is connected with one end of the screw rod, which is far away from the ejector rod.
3. The mechanical pencil of claim 1 wherein the core guard head is metal; and/or the limiting pipe part is made of plastic.
4. The mechanical pencil of claim 1 further comprising a fixed grip, said barrel having a rear end opposite said writing end, said fixed grip being mounted to one of said flat surfaces and located at said rear end; and/or the number of the groups of groups,
the propelling pencil further comprises a pencil core protection tube, wherein the pencil core protection tube is installed in the pencil core pore canal, and an inner hole of the pencil core protection tube is communicated with the installation cavity so that the ejection piece can be inserted.
5. The mechanical pencil of any one of claims 1 to 4 wherein the barrel includes two housings in a flat configuration, the two housings being co-joined to form the mounting cavity and the cartridge opening, one side of either housing facing away from the other housing having a flat surface; and/or the number of the groups of groups,
one of the shells is provided with a positioning column, and the other shell is provided with a positioning hole which is in plug-in fit with the positioning column; and/or the number of the groups of groups,
the two shells are made of metal, and the two shells are welded and fixed; and/or the number of the groups of groups,
the length of the pen holder is greater than or equal to 8cm and less than or equal to 20cm.
6. A production method for producing the mechanical pencil according to any one of claims 1 to 5, characterized by comprising the steps of:
providing a pen holder, wherein the pen holder comprises two flat shells, the two shells are spliced together to form a mounting cavity and a pen core pore canal, and at least one shell is provided with an operation hole communicated with the mounting cavity;
providing a driving assembly, wherein the driving assembly comprises an ejection piece and an operation piece for driving the ejection piece to move;
installing a driving assembly between the two shells, wherein the ejection piece and the operation piece are installed in an installation cavity formed by jointly splicing the two shells, and the operation piece is operated Kong Xianlou;
and fixing the two shells.
7. The method of producing a mechanical pencil according to claim 6, wherein in the step of providing a pencil shaft, the housing is molded by one or more of a die casting mold, a sheet metal stamping mold, a profile extrusion mold, a sheet metal laser cutting apparatus, and a numerical control processing apparatus;
in the step of mounting the drive assembly between the two housings, the steps of:
horizontally positioning one of the shells;
mounting the drive assembly in a corresponding position on the housing;
the other housing is capped to the housing in which the drive assembly has been placed.
8. The method of producing a mechanical pencil of claim 6, wherein in the step of fixing two of said cases, comprising the steps of:
compressing both of the shells;
performing laser welding on a gap between the two shells;
after the step of fixing the two housings, the method further comprises the steps of:
and carrying out surface treatment on the assembled mechanical pencil.
9. The method of producing a mechanical pencil according to claim 8, wherein in the step of surface-treating the assembled mechanical pencil, the steps of:
polishing the welding position on the shell;
electroplating the whole mechanical pencil;
the step of electroplating the whole mechanical pencil further comprises the following steps:
carrying out hanging point chromium plating treatment on the surface of the whole mechanical pencil;
and carrying out vacuum plating treatment on the whole mechanical pencil so as to color the mechanical pencil.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210678564.5A CN114987087B (en) | 2022-06-16 | 2022-06-16 | Propelling pencil and method for producing the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210678564.5A CN114987087B (en) | 2022-06-16 | 2022-06-16 | Propelling pencil and method for producing the same |
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| CN114987087A CN114987087A (en) | 2022-09-02 |
| CN114987087B true CN114987087B (en) | 2024-02-02 |
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| CN114987087A (en) | 2022-09-02 |
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