CN112810356A - Propelling pencil with lead core uniform and thin writing function - Google Patents

Abstract

The invention discloses a propelling pencil with a function of enabling a lead core to write uniformly and finely, which relates to the technical field of propelling pencils and comprises a pencil point, a pencil head, a pencil body, a lead core barrel, a lead discharging mechanism and a rotating mechanism; the pencil point set up in the bottom of nib, the nib set up in the bottom of body, a lead cylinder set up in inside the body, go out lead mechanism set up in the body and be located the bottom of a lead cylinder, rotation mechanism set up in the body with between the lead cylinder. The angle of the lead core is rotated through the change of the writing pressure, a user only needs to write like a common mechanical pencil to automatically realize the rotation of the lead core angle, and the problem that the traditional mechanical pencil needs to rotate a pencil holder after being used for a period of time is solved. The device in the pen body has a buffering effect, and can provide certain buffering protection for the pen point part when the pen body falls carelessly.

Description

Propelling pencil with lead core uniform and thin writing function

Technical Field

The invention relates to the technical field of mechanical pencils, in particular to a mechanical pencil with a function of enabling a lead core to be uniform and thin for writing.

Background

When using the propelling pencil to write, the front end of the lead core of the propelling pencil can continuously abrade and form an inclined plane along with writing to the handwriting that can lead to writing becomes thick and thin gradually, influences the pleasing to the eye of typeface and the degree of discerning of characters. In order to make the handwriting thin, people usually need to rotate the penholder continuously, which is really troublesome.

Disclosure of Invention

In order to solve the technical problems, the invention provides the propelling pencil with the function of enabling the lead core to be uniformly and finely written, the propelling pencil enables the lead core to rotate through different pressures when the propelling pencil is used for writing and is lifted, and therefore the trouble that people need to continuously rotate the penholder to enable handwriting to be uniformly and finely written is eliminated.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a propelling pencil with a function of enabling a lead core to be uniform and fine for writing, which comprises a pencil point, a pencil head, a pencil body, a lead core barrel, a lead discharging mechanism and a rotating mechanism, wherein the pencil point is arranged on the pencil body; the pencil point set up in the bottom of nib, the nib set up in the bottom of body, a lead cylinder set up in inside the body, go out lead mechanism set up in the body and be located the bottom of a lead cylinder, rotation mechanism set up in the body with between the lead cylinder.

Optionally, the lead discharging mechanism includes a lead discharging spring, a lead discharging housing, a lead core fixing cylinder, a plurality of lead core fixing pieces and a spring sleeve; the lead discharging shell is sleeved at the bottom of the lead core barrel, the plurality of lead core fixing pieces are distributed in a circumferential manner, the upper parts of the plurality of lead core fixing pieces extend into the lead discharging shell, the lead core fixing barrel is sleeved at the outer lower parts of the plurality of lead core fixing pieces, the lead discharging spring is arranged between the spring sleeve and the lead discharging shell, one end of the lead discharging spring is contacted with the spring sleeve, and the other end of the lead discharging spring is contacted with the lead discharging shell; the lead is positioned between the plurality of lead mounts.

Optionally, a fixing sleeve, a pressing assembly and a feedback spring are further arranged in the pen body, the fixing sleeve and the feedback spring are arranged between the pen body and the lead cylinder, the feedback spring is located below the fixing sleeve, the pressing assembly is arranged at the top of the fixing sleeve, the top of the fixing sleeve extends out of the pen body, and the bottom of the pressing assembly is in contact with the top of the lead cylinder.

Optionally, the pressing assembly comprises a rubber loading barrel and a rear cover, the rubber loading barrel is used for loading rubber, and the rear cover is arranged at the top of the rubber loading barrel; the rubber loading cylinder is sleeved at the top of the lead core cylinder.

Optionally, a first limiting structure is arranged on the inner wall of the fixed sleeve, and a plurality of second limiting structures are arranged at the top of the fixed sleeve; the first limiting structure is matched with the swing mechanism to prevent the swing mechanism from integrally rotating; the bottom of the outer wall of the rubber loading cylinder is provided with a plurality of third limiting structures, and the third limiting structures are matched with the plurality of second limiting structures.

Optionally, the pen clip is further included, a plurality of fifth limiting structures are arranged on the outer wall of the pen clip, a plurality of fourth limiting structures are arranged at the top of the fixing sleeve, the plurality of fourth limiting structures and the plurality of second limiting structures are arranged at intervals, and the plurality of fifth limiting structures are matched with the plurality of fourth limiting structures; the pen clip is arranged inside the pen body and positioned at the top of the fixed sleeve.

Optionally, the swing mechanism includes a fixed portion and a rotating portion, the rotating portion is disposed at a bottom portion of the rotating portion, the rotating portion is in transmission connection with the lead, and the fixed portion cannot rotate relative to the pen body.

Optionally, the fixed part includes a fixed cylinder and a core shell, the fixed cylinder and the pen body are in limited contact to make the fixed cylinder incapable of rotating, the core shell is arranged at the bottom of the fixed cylinder, and the core shell cannot rotate.

Optionally, the rotating part comprises a fixed clamping groove, a rotary spring, an elastic chuck, an elastic telescopic and quantitative rotating body, a helical tooth meshing chuck and a helical toothed disc; the fixed clamping groove is connected with the inner top of the core shell and cannot rotate; an inner ratchet is arranged on the inner wall of the bottom of the fixed clamping groove, an outer ratchet is arranged on the outer wall of the elastic clamping disc, and the inner ratchet is matched with the outer ratchet; the elastic chuck is arranged at an inner ratchet in the fixed clamping groove, and the rotary spring is arranged in the fixed clamping groove and is positioned between the fixed clamping groove and the elastic chuck; the top of the elastic telescopic and quantitative rotating body is connected with the bottom of the elastic chuck; the inclined tooth meshing chuck is arranged between the elastic telescopic and quantitative rotating body and the inclined fluted disc; the inclined fluted disc is connected with the core outer shell; the oblique tooth meshing chuck is provided with a first oblique tooth disc, the oblique tooth disc is provided with a second oblique tooth disc, and the first oblique tooth disc is matched with the second oblique tooth disc.

Optionally, one side of the inner ratchet close to the upper part of the fixed clamping groove is provided with a pressure braking tooth.

Optionally, the pen also comprises a pen grip; the pen holder is arranged on the lower portion of the outer wall of the pen body.

Compared with the prior art, the invention has the following technical effects:

according to the propelling pencil with the writing function of enabling the lead core to be uniform and fine, the angle of the lead core is rotated through the writing pressure change, a user can automatically rotate the lead core angle only by writing like using a common propelling pencil, and the problem that a pencil holder needs to be rotated after the traditional propelling pencil is used for a period of time is solved. The device in the pen body has a buffering effect, and can provide certain buffering protection for the pen point part when the pen body falls carelessly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view showing the construction of a mechanical pencil according to the present invention having a function of writing a lead uniformly and finely;

FIG. 2 is a schematic structural view of a mechanical pencil having a lead writing function for making a writing lead uniform and fine, with a casing and a holder removed;

FIG. 3 is a schematic sectional view showing the structure of a mechanical pencil according to the present invention having a function of writing a lead uniformly and finely;

FIG. 4 is an exploded view of the mechanical pencil of the present invention having a writing function of making the lead uniform and fine;

FIG. 5 is a schematic structural view of a turning mechanism of the mechanical pencil according to the present invention for making the lead writing uniform and fine;

FIG. 6 is a schematic structural view of an engaging chuck for the helical teeth of the mechanical pencil according to the present invention, which has a function of writing a lead uniformly and finely;

FIG. 7 is a schematic view showing the construction of a resiliently flexible and quantitative rotary body in the mechanical pencil according to the present invention having a function of writing a lead uniformly and finely;

FIG. 8 is a schematic structural view of a fixing groove of the mechanical pencil of the present invention having a function of writing a lead uniformly and finely;

FIG. 9 is a schematic view showing the structure of the elastic chuck of the mechanical pencil according to the present invention having the function of writing the lead uniformly and finely;

FIG. 10 is a schematic view showing the structure of the elastic chuck of the mechanical pencil according to the present invention having the function of writing the lead uniformly and finely;

FIG. 11 is a schematic view showing the structure of a lead discharging spring of the mechanical pencil according to the present invention having a function of writing a lead uniformly and finely;

FIG. 12 is a schematic view showing the structure of the nib of the mechanical pencil according to the present invention for writing a fine lead;

fig. 13 is a schematic view showing the structure of the fixing sleeve of the mechanical pencil according to the present invention having the function of writing the lead uniformly and finely.

Description of reference numerals: 1: a pen point; 2: a pen point; 3: a pen holder; 4: a pen body; 5: a lead discharging mechanism; 5 a: discharging a lead spring; 5 b: discharging a lead shell; 5 c: a lead core fixing cylinder; 5 d: a lead fixing member; 5 e: a spring sleeve; 6: a lead core barrel; 7: a return spring; 8: a fixed cylinder; 9: a feedback spring; 10: fixing the sleeve; 11: a rubber loading cylinder; 12: a pen clip; 13: a rear cover; 14: an eraser; 15: a core upper shell; 16: fixing the clamping groove; 161: a pressure brake tooth; 17: an elastic chuck; 18: an elastically stretchable and quantitative rotating body; 19: a core lower shell; 20: the helical teeth are engaged with the chuck; 21: and (4) an inclined fluted disc.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 13, the present embodiment provides a mechanical pencil having a function of writing a lead uniformly and finely, comprising a pencil point 1, a pencil point 2, a pencil body 4, a lead barrel 6, a lead discharging mechanism 5 and a rotation mechanism; the utility model discloses a pencil, including a pencil, a body 4, a pencil, a nib 1, a nib 2, a pencil section of thick bamboo 6, a lead mechanism 5, a rotation mechanism, a lead barrel 6, a lead mechanism 4, the bottom of nib 2, the nib 2 set up in the bottom of nib 4, a lead barrel 6 set up in inside the body 4, go out lead mechanism 5 set up in the body 4 and be located the bottom of a lead barrel 6, rotation mechanism set up in the body 4 with between the.

In the present embodiment, the mechanical pencil with the function of writing the lead evenly and finely further comprises a pencil holder 12 and a pencil grip 3; the pen clip 12 is arranged inside the pen body 4 and positioned at the top of the fixed sleeve 10, and the pen holder 3 is arranged on the lower portion of the outer wall of the pen body 4.

The lead discharging mechanism 5 comprises a lead discharging spring 5a, a lead discharging shell 5b, a lead core fixing cylinder 5c, four lead core fixing pieces 5d and a spring sleeve 5 e; the lead discharging shell 5b is sleeved at the bottom of the lead core barrel 6, the four lead core fixing pieces 5d are distributed in a circumferential manner, the upper parts of the four lead core fixing pieces extend into the lead discharging shell 5b, the lead core fixing barrel 5c is sleeved at the outer lower parts of the four lead core fixing pieces 5d, the lead discharging spring 5a is arranged between the spring sleeve 5e and the lead discharging shell 5b, one end of the lead discharging spring 5a is in contact with the spring sleeve 5e, and the other end of the lead discharging spring 5a is in contact with the lead discharging shell 5 b; the lead is located between the four lead holders 5 d.

Still be provided with fixed sleeve 10, pressing assembly and feedback spring 9 in the body of the pen 4, fixed sleeve 10 with feedback spring 9 all set up in the body of the pen 4 with between the lead cylinder 6, just feedback spring 9 is located fixed sleeve 10 below, press the assembly set up in fixed sleeve 10 top, just the top of fixed sleeve 10 stretches out to outside the body of the pen 4, press the assembly bottom with the top of lead cylinder 6 contacts.

The pressing assembly comprises a rubber loading barrel 11 and a rear cover 13, the rubber loading barrel 11 is used for loading rubber 14, and the rear cover 13 is arranged at the top of the rubber loading barrel 11; the rubber loading barrel 11 is sleeved at the top of the lead core barrel 6.

A first limiting structure is arranged on the inner wall of the fixed sleeve 10, and a plurality of second limiting structures are arranged at the top of the fixed sleeve 10; the first limiting structure is matched with the swing mechanism to prevent the swing mechanism from integrally rotating; the bottom of the outer wall of the rubber loading barrel 11 is provided with a plurality of third limiting structures, and the third limiting structures are matched with the plurality of second limiting structures.

Be provided with a plurality of fifth limit structure on the 12 outer walls of pen-holder, fixed sleeve 10 top is provided with a plurality of fourth limit structure, a plurality of fourth limit structure with a plurality of second limit structure interval sets up, a plurality of fifth limit structure with a plurality of fourth limit structure phase-matches.

The four lead holder 5d has the same structure as the conventional mechanical pencil.

The top of the fixed sleeve 10 extends upwards to be provided with four groups of limiting structures, each group of limiting structures comprises two limiting strips, a second limiting structure is arranged between the two limiting strips, and a fourth limiting structure is arranged between the two adjacent limiting structures.

Four concave grooves are arranged on the outer wall of the pen clip 12 and are used as fifth limiting structures, and the width of each groove is equal to the interval between every two adjacent groups of limiting structures. The pen clip 12 and the pen body 4 are in interference fit, and the pen clip 12 and the pen body 4 are kept at a fixed position, so that the pen clip 12 can prevent the fixing sleeve 10 from rotating.

The bottom of the outer wall of the rubber loading barrel 11 is provided with four convex lugs, the width of each lug is the same as that of the second limiting structure, and the rubber loading barrel 11 is prevented from rotating through the lugs and the second limiting structure.

The rotary mechanism comprises a fixed part and a rotating part, the rotating part is arranged at the bottom in the rotating part and is in transmission connection with the lead, and the fixed part cannot rotate relative to the pen body 4.

The fixed part comprises a fixed barrel 8 and a core outer shell, the fixed barrel 8 and the pen body 4 are in limited contact to enable the fixed barrel 8 to be incapable of rotating, the core outer shell is arranged at the bottom of the fixed barrel 8, and the core outer shell cannot rotate.

The rotating part comprises a fixed clamping groove 16, a rotary spring 7, an elastic chuck 17, an elastic telescopic and quantitative rotating body 18, a bevel gear meshing chuck 20 and a bevel gear disc 21; the fixed clamping groove 16 is connected with the inner top of the core shell, and the fixed clamping groove 16 cannot rotate; an inner ratchet is arranged on the inner wall of the bottom of the fixed clamping groove 16, an outer ratchet is arranged on the outer wall of the elastic chuck 17, and the inner ratchet is matched with the outer ratchet; the elastic chuck 17 is arranged at an inner ratchet in the fixed clamping groove 16, and the rotary spring 7 is arranged in the fixed clamping groove 16 and is positioned between the fixed clamping groove 16 and the elastic chuck 17; the top of the elastic telescopic and quantitative rotating body 18 is connected with the bottom of the elastic chuck 17; the helical tooth engagement chuck 20 is arranged between the elastic telescopic and quantitative rotating body 18 and the helical tooth disc 21; the inclined fluted disc 21 is connected with the core outer shell; the bevel gear engaging chuck 20 is provided with a first bevel gear plate 21, the bevel gear plate 21 is provided with a second bevel gear plate 21, and the first bevel gear plate 21 is matched with the second bevel gear plate 21. One side of the inner ratchet close to the upper part of the fixed clamping groove 16 is provided with a pressure brake tooth 161. The pressure brake teeth 161 are helical teeth, and the inclination direction of the pressure brake teeth 161 is opposite to that of the inner ratchet teeth.

The inner wall of the fixing sleeve 10 is a hexagonal structure, and the hexagonal inner wall is a first limiting structure.

The outer wall of the upper part of the fixed cylinder 8 is of a hexagonal structure and is matched with the inner wall of the fixed sleeve 10 to prevent the fixed cylinder 8 from rotating. The lower part of the fixed barrel 8 extends outwards along the circumferential direction to form a bearing part, the feedback spring 9 is arranged between the bearing part and the fixed sleeve 10, and all parts inside the pen body 4 are axially positioned through interference fit of the pen clip 12 and the pen body 4 and the pre-tightening force action of the feedback spring 9.

The bottom of the fixed cylinder 8 extends along the axis to form four rectangular blocks, the top of the upper core shell 15 is provided with four rectangular grooves, and the four rectangular grooves are not communicated with the outer wall of the upper core shell 15; through the cooperation of rectangular groove and rectangular block, make casing 15 be connected with fixed section of thick bamboo 8 on the core to accomplish the circumference location to fixed section of thick bamboo 8.

The bottom of the upper core shell 15 is provided with two arrow-shaped hollow grooves, the top of the lower core shell 19 extends to form two arrow-shaped limiting structures, the arrow-shaped limiting structures are inserted into the arrow-shaped hollow grooves to complete connection of the upper core shell 15 and the lower core shell 19, and circumferential positioning of the lower core shell 19 is completed.

Four installation through grooves are formed in the side wall of the bottom of the core lower shell 19, four guide grooves are further formed in the side wall of the bottom of the core lower shell 19, and the guide grooves are communicated with the installation through grooves.

Be provided with four installation stoppers on the skewed tooth meshing chuck 20 outer wall, the groove phase-match is led to with the installation to the installation stopper, and through corresponding with the guide way with the installation stopper, utilize the guide way to insert the installation stopper and lead to the inslot, make skewed tooth meshing chuck 20 be connected with casing 19 under the core.

In the writing process, the lead is contacted with the paper surface, the pressure from the paper surface is transmitted to the helical tooth meshing chuck 20 through the lead fixing cylinder 5c and the lead discharging mechanism shell 5b in sequence, so that the helical tooth meshing chuck 20 is separated from the helical fluted disc 21, and the helical tooth meshing chuck 20 compresses the elastic telescopic and quantitative rotating body 18 and the rotary spring 7; the elastic chuck 17 extends upwards and is clamped by a pressure brake tooth 161 at the bottom of the fixed clamping groove 16, so that the elastic chuck 17 is prevented from reversing; when the lead core is separated from the paper surface, the elastic telescopic and quantitative rotating body 18 recovers the original length, the rotary spring 7 extends to separate the elastic chuck 17 from the pressure braking tooth 161 at the bottom of the fixed clamping groove 16, the helical tooth meshing chuck 20 rotates for a tooth position and is meshed with the helical tooth disc 21 again, the helical tooth meshing chuck 20 moves towards the bottom of the helical tooth along the top of the helical tooth, the elastic telescopic and quantitative rotating body 18 generates a certain rotary pretightening force under the guiding action of the helical tooth, and when the elastic chuck 17 is separated from the pressure braking tooth 161 at the bottom of the fixed clamping groove 16, the elastic chuck 17 rotates for a tooth position relative to the fixed clamping groove 16 under the action of the rotary pretightening force of the elastic telescopic and quantitative rotating body 18; the rotation of the helical tooth meshing chuck 20 drives the lead discharging mechanism shell 5b to rotate, and the lead discharging mechanism shell 5b drives the lead fixing cylinder 5c, the lead fixing piece and the lead to rotate, so that the lead is automatically rotated when writing is realized.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (10)

1. A propelling pencil with the function of enabling a lead core to be uniform and fine is characterized by comprising a pencil point, a pencil body, a lead core barrel, a lead discharging mechanism and a rotating mechanism; the pencil point set up in the bottom of nib, the nib set up in the bottom of body, a lead cylinder set up in inside the body, go out lead mechanism set up in the body and be located the bottom of a lead cylinder, rotation mechanism set up in the body with between the lead cylinder.

2. The mechanical pencil with the function of writing fine and uniform lead according to claim 1, wherein said lead discharging mechanism comprises a lead discharging spring, a lead discharging housing, a lead fixing cylinder, a plurality of lead fixing members and a spring sleeve; the lead discharging shell is sleeved at the bottom of the lead core barrel, the plurality of lead core fixing pieces are distributed in a circumferential manner, the upper parts of the plurality of lead core fixing pieces extend into the lead discharging shell, the lead core fixing barrel is sleeved at the outer lower parts of the plurality of lead core fixing pieces, the lead discharging spring is arranged between the spring sleeve and the lead discharging shell, one end of the lead discharging spring is contacted with the spring sleeve, and the other end of the lead discharging spring is contacted with the lead discharging shell; the lead is positioned between the plurality of lead mounts.

3. The mechanical pencil with the function of writing leads evenly and finely according to claim 2, wherein a fixed sleeve, a pressing component and a feedback spring are further arranged in the pencil body, the fixed sleeve and the feedback spring are both arranged between the pencil body and the lead barrel, the feedback spring is positioned below the fixed sleeve, the pressing component is arranged at the top of the fixed sleeve, the top of the fixed sleeve extends out of the pencil body, and the bottom of the pressing component is in contact with the top of the lead barrel.

4. The mechanical pencil with the function of writing a lead uniformly and finely as claimed in claim 3, wherein said pressing assembly comprises a rubber loading cylinder for loading a rubber and a rear cover provided on a top of said rubber loading cylinder; the rubber loading cylinder is sleeved at the top of the lead core cylinder.

5. The mechanical pencil with the function of enabling the lead to be written uniformly and finely according to claim 4, wherein a first limiting structure is arranged on the inner wall of the fixed sleeve, and a plurality of second limiting structures are arranged on the top of the fixed sleeve; the first limiting structure is matched with the swing mechanism to prevent the swing mechanism from integrally rotating; the bottom of the outer wall of the rubber loading cylinder is provided with a plurality of third limiting structures, and the third limiting structures are matched with the plurality of second limiting structures.

6. The mechanical pencil with the function of enabling the lead to write uniformly and finely according to claim 5, further comprising a pencil holder, wherein a plurality of fifth limiting structures are arranged on the outer wall of the pencil holder, a plurality of fourth limiting structures are arranged at the top of the fixing sleeve, the plurality of fourth limiting structures and the plurality of second limiting structures are arranged at intervals, and the plurality of fifth limiting structures are matched with the plurality of fourth limiting structures; the pen clip is arranged inside the pen body and positioned at the top of the fixed sleeve.

7. The mechanical pencil with the function of writing a fine lead according to claim 1, wherein said rotation mechanism comprises a fixed portion and a rotating portion, said rotating portion being disposed at a bottom portion in said rotating portion and being drivingly connected to the lead, said fixed portion being non-rotatable with respect to said body.

8. The mechanical pencil with the function of writing a fine and uniform lead according to claim 7, wherein the fixing portion includes a fixing barrel and a core outer casing, the fixing barrel is in limit contact with the pencil body so that the fixing barrel cannot rotate, the core outer casing is disposed at the bottom of the fixing barrel, and the core outer casing cannot rotate.

9. The mechanical pencil having the function of writing the lead uniformly and finely as claimed in claim 8, wherein said rotating portion comprises a fixed catching groove, a rotary spring, an elastic chuck, an elastic telescopic and quantitative rotating body, a helical tooth engaging chuck and a helical toothed disk; the fixed clamping groove is connected with the inner top of the core shell and cannot rotate; an inner ratchet is arranged on the inner wall of the bottom of the fixed clamping groove, an outer ratchet is arranged on the outer wall of the elastic clamping disc, and the inner ratchet is matched with the outer ratchet; the elastic chuck is arranged at an inner ratchet in the fixed clamping groove, and the rotary spring is arranged in the fixed clamping groove and is positioned between the fixed clamping groove and the elastic chuck; the top of the elastic telescopic and quantitative rotating body is connected with the bottom of the elastic chuck; the inclined tooth meshing chuck is arranged between the elastic telescopic and quantitative rotating body and the inclined fluted disc; the inclined fluted disc is connected with the core outer shell; the oblique tooth meshing chuck is provided with a first oblique tooth disc, the oblique tooth disc is provided with a second oblique tooth disc, and the first oblique tooth disc is matched with the second oblique tooth disc.

10. The mechanical pencil with the function of writing the lead evenly and finely as claimed in claim 9, wherein a pressure stop tooth is provided on a side of the inner ratchet adjacent to an upper portion of the fixed slot.

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