CN114604020A

CN114604020A - Propelling pencil

Info

Publication number: CN114604020A
Application number: CN202210317118.1A
Authority: CN
Inventors: 袁林杰; 王晨希; 娄绍军
Original assignee: Deli Group Co Ltd
Current assignee: Deli Group Co Ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-06-10

Abstract

The invention discloses a propelling pencil, which comprises a pencil shell, a movement assembly and a lead storage tube, wherein the movement assembly is arranged on the pencil shell; the core assembly is arranged in the pen shell, and a core pressing spring is arranged between the core assembly and the core storage tube; a pressing spring is arranged between the front end of the pen shell and the front end of the movement assembly; the inner wall of the pen shell is provided with a limiting rib matched with the gear of the movement assembly, and the outer side wall of the gear is provided with a first sliding groove matched with the limiting rib; the movement assembly can move under stress, when the limiting rib is matched in the first sliding groove and the flower of the movement assembly is in an opening state, the head of the movement assembly extends into the head of the pen shell, and a lead can be filled in the movement assembly; when the end part of the limiting rib abuts against the tooth groove of the gear, the head of the movement assembly extends out of the head of the pen shell, and the flowering of the movement assembly is in a closed state.

Description

Propelling pencil

Technical Field

The invention relates to the technical field of writing tools, in particular to a movable pencil.

Background

The wooden pencil needs to be frequently curled to keep writing smooth, and the appearance of the mechanical pencil is just in line with the requirement of people on convenient use. The propelling pencil, as the name implies, can automatically or semi-automatically eject the lead without coiling and cutting. Before the mechanical pencil is used, a thin pencil lead (commonly called a lead) made of graphite is required to be placed, and a cover at the back is closed after the pencil lead is placed so as to prevent the pencil lead from falling out. The mechanical pencil is internally provided with a spring, and the pencil core can extend out from the fixed length of the front end by pressing the rear cover, and characters with the same thickness can be written. However, the damping head of the existing propelling pencil is always exposed out of the pencil shell and is easily damaged when falling and colliding, and the damping head is a core component, so that the automatic core-ejecting function is damaged, and the propelling pencil cannot be used.

Disclosure of Invention

The invention aims to solve the technical problem of providing a propelling pencil, which can retract a damping head into a pencil shell when not in use, and can effectively protect the damping head from being damaged when falling and colliding.

The technical scheme of the invention is that the invention provides a propelling pencil with the following structure, which comprises a pencil shell, a movement assembly and a core storage tube; the core assembly is arranged in the pen shell, and a core pressing spring is arranged between the core assembly and the core storage tube; a pressing spring is arranged between the front end of the pen shell and the front end of the movement assembly; the inner wall of the pen shell is provided with a limiting rib matched with the gear of the movement assembly, and the outer side wall of the gear is provided with a first sliding groove matched with the limiting rib; the movement assembly can move under stress, when the limiting rib is matched in the first sliding groove and the opening of the movement assembly is in an opening state, the head of the movement assembly extends into the head of the pen shell, and a lead can be filled in the movement assembly; when the end part of the limiting rib abuts against the tooth groove of the gear, the head of the movement assembly extends out of the head of the pen shell, and the flowering of the movement assembly is in a closed state.

After adopting the structure, compared with the prior art, the propelling pencil has the following advantages:

the inner wall of the pen shell of the propelling pencil is provided with the limiting rib matched with the gear of the movement assembly, and the outer side wall of the gear is provided with the first sliding groove matched with the limiting rib; the movement assembly can move under stress, when the limiting rib is matched in the first sliding groove and the opening of the movement assembly is in an opening state, the head of the movement assembly extends into the head of the pen shell, and at the moment, a lead can be filled in the movement assembly; when the end part of the limiting rib abuts against the tooth groove of the gear, the head part of the movement assembly extends out of the head part of the pen shell, and the flowering of the movement assembly is in a closed state; even when the pen shell is used, the head (the damping head) of the core assembly can extend out of the head of the pen shell, and the damping head can be retracted into the pen shell when the pen shell is not used, so that the damping head can be effectively protected from being damaged when falling and colliding.

As an improvement, the propelling pencil further comprises a connector, the connector is connected between the propeller of the movement assembly and the core storage tube, and the movement pressing spring is arranged between the movement assembly and the connector. After adopting this kind of structure, the equipment is more convenient, and structural connection is more reliable.

As an improvement, the movement assembly comprises the propeller, a driving assembly, a flowering assembly and a damping head; the flower-forming assembly comprises a core front sleeve, the outer side wall of the core front sleeve is rotatably connected with the gear, and the damping head is connected to the front end of the core front sleeve; the driving assembly comprises a rotating wheel and a core rear sleeve, the core rear sleeve is matched with the rear end of the core front sleeve, the rotating wheel is sleeved outside the core front sleeve and is positioned between the gear and the core rear sleeve, and the core pressing spring is arranged between the core rear sleeve and the connector; when the limiting rib is pressed, the movement assembly moves forwards, and the rotating wheel drives the gear to rotate so that the limiting rib can be inserted into the first sliding groove or the gear tooth groove. By adopting the structure, the movement assembly is structurally integrated, has stronger integrity and universality and is adaptive to more money; the front gear and the rotating wheel are designed to control the state change of the machine core.

As an improvement, a second sliding groove matched with the limiting rib is arranged on the outer side wall of the rotating wheel, and the limiting rib is in sliding fit in the second sliding groove. By adopting the structure, the structure is simple, and the limiting ribs can limit the circumferential rotation of the rotating wheel.

As an improvement, a connecting hole is arranged on the side wall of the front casing of the machine core, a bulge matched with the connecting hole is arranged on the side wall of the rear casing of the machine core, and the bulge is connected to the side wall of the rear casing of the machine core through an elastic sheet; when the front end of the core rear sleeve is inserted into the rear end of the core front sleeve, the bulge is embedded into the connecting hole. After adopting this kind of structure, protruding and connecting hole structure can make the connection structure more stable between core front casing and the core back casing, guarantees the integral structure of core assembly.

As an improvement, a guide inclined plane is arranged at the joint of the elastic sheet and the bulge. After adopting this kind of structure for the sleeve pipe is connected into the core front casing more smoothly behind the core.

As an improvement, the side wall of the rear sleeve of the machine core is provided with an accommodating hole, one end of the elastic sheet is connected to the front side wall of the accommodating hole, and the bulge is exposed out of the accommodating hole. After adopting this kind of structure, simple to operate.

As an improvement, a first limiting ring is arranged on the outer side wall of the core rear sleeve, and the front end face of the first limiting ring is abutted against the rear end face of the core front sleeve; the rear end face of the rotating wheel abuts against the front end face of the first limiting ring; the front end of the core pressing spring is abutted against the rear end face of the first limiting ring. After adopting this kind of structure, simple structure, the equipment is convenient.

As an improvement, the front end of the connector is inserted in the rear sleeve of the machine core, a first limiting step is arranged on the side wall of the connector, the machine core pressing spring is sleeved outside the joint of the rear sleeve of the machine core and the connector, and the rear end of the machine core pressing spring abuts against the step surface of the first limiting step. After adopting this kind of structure, simple structure, the equipment is convenient.

As an improvement, a second limiting ring is arranged on the outer side wall of the front sleeve of the movement, and the front end face of the gear abuts against the rear end face of the second limiting ring. After adopting this kind of structure, the gear is spacing through the second spacing ring, and limit structure is simple.

As an improvement, the blooming assembly further comprises a core inner sleeve and a blooming, the core inner sleeve is tightly matched in the core front sleeve, the blooming is arranged in the core inner sleeve, a core spring is arranged between the blooming and the core inner sleeve, the front end of the propeller extends into the core inner sleeve and is connected with the rear end of the blooming, and the rear end of the propeller extends into the core rear sleeve and is connected with the front end of the connector; the propeller can push the flower to move in the inner sleeve of the movement. After adopting this kind of structure, blossoming subassembly simple structure, it is more convenient to be connected the equipment with the propeller.

As an improvement, the front end of the rear sleeve of the machine core is provided with a third limiting ring, the front end of the propeller is provided with a second limiting step, and the second limiting step is limited on the front side of the third limiting ring. After adopting this kind of structure, the third spacing ring can carry out spacing, simple structure and reliable to the propeller.

As an improvement, a third limit step is arranged on the side wall of the flower, a fourth limit ring is arranged on the inner wall of the inner sleeve of the movement, the movement spring is sleeved outside the flower, one end of the movement spring abuts against the rear end face of the fourth limit ring, and the other end of the movement spring abuts against the front end face of the third limit step. After adopting this kind of structure, simple structure, the equipment is convenient.

As an improvement, the blooming assembly further comprises an opening and closing driving assembly, the opening and closing driving assembly comprises a blocking opening and a closing piece, and the closing piece is arranged in the front end of the inner sleeve of the movement and is positioned on the front side of the fourth limiting ring; the blocking opening is positioned in the front end of the front sleeve of the movement and positioned at the front side of the inner sleeve of the movement; said flowering tip being movable between said mouth and a closure, said flowering tip being closed when said flowering tip extends into said closure and open when said flowering tip extends into said mouth. After adopting this kind of structure, switching drive assembly simple structure, the equipment is convenient, and switching control is more nimble.

As an improvement, the side wall of the flower is provided with a ball, the side wall of the flower is provided with an embedded groove, one side of the ball is embedded in the embedded groove, and the other side of the ball can be in rolling fit with the inner wall of the closing part and the inner wall of the blocking opening. After the structure is adopted, under the action of the balls, the blooming moves more flexibly between the closing part and the blocking opening, and the friction force is reduced.

As an improvement, the front end of the closing part is provided with a guide opening. After adopting this kind of structure, the guiding hole has the effect of direction to the ball, avoids the ball to be blocked.

As an improvement, the aperture of the blocking opening is larger than that of the closing member; the front end of the blocking opening is provided with a closing opening, and the minimum aperture of the closing opening is smaller than that of the closing element. After the structure is adopted, the closing-in of the blocking opening has a limiting effect on the ball, and the ball can be prevented from being separated.

As an improvement, a fourth limiting step is arranged in the front end of the front sleeve of the machine core, the outer wall of the closing-in of the blocking opening abuts against the fourth limiting step, and the rear end face of the blocking opening abuts against the front end face of the inner sleeve of the machine core. After adopting this kind of structure, fourth spacing step has a limiting action to keeping off the mouth.

As an improvement, the front end of the front sleeve of the movement is provided with a convex neck, the rear end of the pressing spring is sleeved outside the convex neck, and the front end of the pressing spring is abutted against the head of the pen shell. After adopting this kind of structure, press spring package assembly simple structure.

As an improvement, the rear end of the damping head extends into the convex neck, the front end of the damping head is exposed out of the convex neck, and the front end of the damping head can penetrate through a pen point hole in the head part of the pen shell to be exposed out of the pen shell. After adopting this kind of structure, simple structure, the equipment is convenient.

As an improvement, the rear end of the damping head is in sliding fit in the convex neck, and a damping spring is arranged between the damping head and the closing-in of the blocking opening. After adopting this kind of structure, the damping head can go out the core automatically, and it is more convenient to use.

As an improvement, the propelling pencil further comprises a pressing component, wherein the pressing component comprises a pressing connector and a top cap; the pressing connector is limited in the rear end of the pen shell, one end of the pressing connector is connected with the rear end of the core storage tube, and the other end of the pressing connector is connected with the top cap. After adopting this kind of structure, press connector connection structure simple, the equipment is convenient.

As an improvement, a fifth limiting step is arranged on the outer side wall of the pressing connector, a fifth limiting ring is arranged on the inner wall of the rear end of the pen shell, and the rear end face of the fifth limiting step can be limited on the front end face of the fifth limiting ring. After adopting this kind of structure, press the connector limit structure simpler.

Drawings

Fig. 1 is a schematic perspective view of the mechanical pencil of the present invention.

FIG. 2 is a schematic sectional view of the mechanical pencil of the present invention.

Fig. 3 is an enlarged structure diagram of a part in the frame of fig. 2.

Fig. 4 is a schematic perspective view of a portion of the mechanical pencil of the present invention.

Fig. 5 is an exploded view of the movement assembly of the propelling pencil of the present invention.

Fig. 6 is an exploded view of the drive assembly of the engine assembly of the propelling pencil of the present invention.

Fig. 7 is an exploded view of the flower assembly of the engine assembly of the propelling pencil of the present invention.

Fig. 8 is a schematic sectional view showing the structure of the propelling pencil (with the damping tip extended from the pencil case) according to the present invention.

Fig. 9 is a schematic sectional perspective view of the mechanical pencil according to the present invention.

Fig. 10 is an enlarged schematic view of a portion B in fig. 9.

Fig. 11 is a schematic sectional perspective view of the mechanical pencil of the present invention (with the damping tip extending out of the casing).

Fig. 12 is an enlarged schematic view of a portion C in fig. 11.

Shown in the figure: 1. the connector comprises 101, a first limit step, 2, a core storage tube, 3, an upper penholder, 301, a fifth limit ring, 4, a lower penholder, 401, a limit rib, 5, a propeller, 501, a second limit step, 6, a damping head, 7, a core front sleeve, 701, a fourth limit step, 702, a convex neck, 703, a second limit ring, 704, a connecting hole, 8, a core inner sleeve, 801, a fourth limit ring, 9, a flower, 901, a third limit step, 10, a core spring, 11, a blocking opening, 12, a closing part, 1201, a guide opening, 13, a ball, 14, a lead core, 15, a pressing spring, 16, a damping spring, 17, a gear, 1701, a first sliding groove, 18, a rotating wheel, 1801, a second sliding groove, 19, a core rear sleeve, 1901, a first limit ring, 1902, a spring sheet, 1903, a containing hole, 1904, a bulge, 1905, a guide inclined plane, 1906, a third limit ring, 20, a rotating wheel, 1801, a damping head, a second limiting ring, a driving head, a driving device, The movement presses the spring, 21, presses the connector, 2101, the fifth spacing step, 22, hood.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification.

In the drawings, the thickness, size, and shape of an object have been slightly exaggerated for convenience of explanation. The figures are purely diagrammatic and not drawn to scale.

It will be further understood that the terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "including," and/or "containing," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

As shown in fig. 1 to 7, the present application discloses a propelling pencil, which comprises a pencil shell, a movement assembly, a connector 1, a lead storage tube 2 and a pressing assembly.

For the sake of clarity in describing the structure of the propelling pencil, the position close to the tip is set as the front side and the position far from the tip is set as the rear side in the present application.

The pen shell comprises an upper pen holder 3 and a lower pen holder 4, and the upper pen holder 3 is connected with the lower pen holder 4 through threads. The end part of the lower pen rod 4 is provided with a pen point hole. The movement assembly, the connector 1, the core storage tube 2 and part of the pressing assembly are all arranged in a space formed by the upper pen rod 3 and the lower pen rod 4.

The movement assembly comprises the propeller 5, a driving assembly, a flowering assembly and a damping head 6.

The blooming assembly comprises a core front sleeve 7, a core inner sleeve 8, a blooming unit 9 and an opening and closing driving assembly. The inner sleeve 8 of the movement is tightly matched in the front sleeve 7 of the movement, and the front end of the propeller 5 extends into the inner sleeve 8 of the movement. The blooming body 9 is arranged in the inner sleeve 8 of the movement, the blooming body 9 is formed by combining two blooming split bodies, the blooming split bodies are used for the lead core 14 to pass through, and the two blooming split bodies are used for being clamped at the outer side of the lead core 14. The front end of the propeller 5 is provided with a connecting groove, the shape of the connecting groove is matched with the shape of the rear end of the flower 9, and the rear end of the flower 9 is matched in the connecting groove. A movement spring 10 is arranged between the flower 9 and the movement inner sleeve 8, a third limit step 901 is arranged on the side wall of the flower 9, a fourth limit ring 801 is arranged on the inner wall of the movement inner sleeve 8, the movement spring 10 is sleeved outside the flower 9, one end of the movement spring 10 abuts against the rear end face of the fourth limit ring 801, and the other end of the movement spring 10 abuts against the front end face of the third limit step 901.

The opening and closing driving assembly comprises a blocking opening 11 and a closing piece 12. The closing element 12 is arranged in the front end of the movement inner sleeve 8 and positioned on the front side of the fourth limiting ring 801, and the front end of the closing element 12 is provided with a guide opening 1201. The blocking opening 11 is positioned in the front end of the movement front sleeve 7 and at the front side of the movement inner sleeve 8, and the aperture of the blocking opening 11 is larger than that of the closing element 12; the front end of the blocking opening 11 is provided with a closing opening, and the minimum aperture of the closing opening is smaller than that of the closing element 12. A fourth limiting step 701 is arranged in the front end of the core front sleeve 7, the outer wall of the closing-in of the blocking opening 11 abuts against the fourth limiting step 701, and the rear end face of the blocking opening 11 abuts against the front end face of the core inner sleeve 8. The side walls of the front ends of the two split flowering bodies are respectively provided with a ball 13, namely, the side walls of the split flowering bodies are provided with embedded grooves, one side of each ball 13 is embedded into the embedded groove, and the other side of each ball 13 can be in rolling fit with the inner wall of the closing part 12 and the inner wall of the blocking opening 11. The front end of the flower 9 can move between the blocking opening 11 and the closing member 12, when the front end of the flower 9 extends into the closing member 12, the front end of the flower 9 is closed, and at the moment, the flower 9 clamps the lead 14, and the lead 14 cannot move. When the front end of the flower 9 extends into the blocking opening 11, the front end of the flower 9 is opened, and the lead 14 can move between the two flower splitting bodies.

The front end of the core front sleeve 7 is provided with a convex neck 702, a pressing spring 15 is arranged between the convex neck 702 and the head of the pen shell, namely, the rear end of the pressing spring 15 is sleeved outside the convex neck 702, and the front end of the pressing spring 15 abuts against the inside of the head of the pen shell. The rear end of the damping head 6 extends into the convex neck 702, the front end of the damping head 6 is exposed out of the convex neck 702, and the front end of the damping head 6 can pass through the pen point hole at the head of the pen shell and be exposed out of the pen shell. The rear end of the damping head 6 is in sliding fit with the convex neck 702, and a damping spring 16 is arranged between the damping head 6 and the closing-in of the blocking opening 11.

The blooming assembly is arranged in the lower pen rod 4, the outer side wall of the core front sleeve 7 is rotatably connected with the gear 17, the outer side wall of the core front sleeve 7 is provided with a second limiting ring 703, and the front end face of the gear 17 abuts against the rear end face of the second limiting ring 703. The inner wall of the lower pen rod 4 is provided with a limiting rib 401 matched with the gear 17 of the movement assembly, the outer side wall of the gear 17 is provided with a first sliding groove 1701 matched with the limiting rib 401, in the embodiment, the first sliding groove 1701 is provided with three, and the limiting rib 401 is provided with three.

The driving component comprises a rotating wheel 18 and a movement rear sleeve 19, and the movement rear sleeve 19 is matched with the rear end of the movement front sleeve 7. The rotating wheel 18 is sleeved outside the front sleeve 7 of the movement and is positioned between the gear 17 and the rear sleeve 19 of the movement, a second sliding groove 1801 matched with the limiting rib 401 is arranged on the outer side wall of the rotating wheel 18, the limiting rib 401 is in sliding fit with the second sliding groove 1801, and the pressing spring 20 of the movement is arranged between the rear sleeve 19 of the movement and the connector 1. The outer side wall of the core rear sleeve 19 is provided with a first limit ring 1901, and the front end face of the first limit ring 1901 abuts against the rear end face of the core front sleeve 7. The rear end surface of the rotating wheel 18 abuts against the front end surface of the first limit ring 1901. The front end of the movement pressing spring 20 abuts against the rear end face of the first limit ring 1901. A connecting hole 704 is formed in the side wall of the movement front sleeve 7, a protrusion 1904 matched with the connecting hole 704 is formed in the side wall of the movement rear sleeve 19, and the protrusion 1904 is connected to the side wall of the movement rear sleeve 19 through an elastic sheet 1902; when the front end of the movement rear sleeve 19 is inserted into the rear end of the movement front sleeve 7, the protrusion 1904 is embedded into the connecting hole 704. The side wall of the core rear sleeve 19 is provided with an accommodating hole 1903, one end of the elastic sheet 1902 is connected to the front side wall of the accommodating hole 1903, and the protrusion 1904 is exposed out of the accommodating hole 1903. The joint of the elastic piece 1902 and the protrusion 1904 is provided with a guiding inclined plane 1905. When the gear is separated from the limiting rib, the gear rotates, and the end part of the limiting rib can be inserted into a gear tooth groove.

The front end of the connector 1 is inserted into the core rear sleeve 19, a first limiting step 101 is arranged on the side wall of the connector 1, the core pressing spring 20 is sleeved outside the joint of the core rear sleeve 19 and the connector 1, and the rear end of the core pressing spring 20 abuts against the step surface of the first limiting step 101. The rear end of the propeller 5 extends into the core rear sleeve 19 and is connected with the front end of the connector 1, namely, the front end of the connector 1 is provided with an embedded groove, and the rear end of the propeller 5 is embedded into the embedded groove. The front end of the movement rear sleeve 19 is provided with a third limiting ring 1906, the front end of the propeller 5 is provided with a second limiting step 501, and the second limiting step 501 is limited at the front side of the third limiting ring 1906.

The pressing component comprises a pressing connector 21 and a top cap 22; the pen holder is characterized in that the pressing connector 21 is limited in the rear end of the pen shell, a fifth limiting step 2101 is arranged on the outer side wall of the pressing connector 21, a fifth limiting ring 301 is arranged on the inner wall of the rear end of the upper pen rod 3, and the rear end face of the fifth limiting step 2101 is limited on the front end face of the fifth limiting ring 301. One end of the pressing connector 21 is connected with the rear end of the core storage tube 2, and the other end of the pressing connector 21 is connected with the top cap 22.

The inner cavity of the propeller 5, the gap between the two split bodies, the inner cavity of the blocking opening 11 and the inner cavity of the damping head 6 form a core loading channel. The inner cavity of the core storage tube 2 and the inner cavity of the connector 1 are communicated with the core loading channel.

In an initial state, the damping head 6 extends into a pen point hole of the lower pen rod 4, the front end of the blossom 9 extends into the closing part 12, the blossom 9 is in a closing state, the limiting rib 401 is matched in a first sliding groove 1701 of the gear 17 and a second sliding groove 1801 of the rotating wheel 18 and is pressed by the movement to be acted by the spring 20, and a movable distance is reserved between the connector 1 and a rear sleeve 19 of the movement; the press connector 21 abuts against the fifth limit ring 301 by the action of the movement press spring and the press spring 15.

As shown in fig. 8 to 12, when the propelling pencil of the present application is used, the top cap 22 is lightly pressed, and the connector 21, the core tube 2 and the connector 1 are all pushed forward by the force, the core pressing spring 20 is compressed, the connector 1 pushes the pusher 5 and the flower 9 to move, the front end of the flower 9 extends into the blocking opening 11, the flower 9 is opened, and the lead 14 in the core tube 2 can be loaded into the core loading passage, thereby completing the core loading. The top cap 22 is continuously pressed, the connector pushes the engine core assembly to move forwards, in the process, the rotating wheel and the gear slide on the limiting rib, and when the limiting rib is separated from the first sliding groove of the gear, the gear rotates; at the moment, the pressing top cap is loosened, the movement assembly moves backwards under the action of the pressing spring, the gear and the rotating wheel also move backwards, meanwhile, the gear rotates, and the limiting rib slides into the gear tooth groove and abuts against the gear. At this time, the front end of the damping head 6 passes through the nib hole and is exposed outside the lower penholder 4, and the pressing spring 15 is compressed. The flower 9, the propeller 5, the connector 1, the oil pipe, the pressing connector 21, the movement rear sleeve 19 and the like are reset under the action of the movement pressing spring 20 and the movement spring 10. During writing, the damping head 6 can automatically eject under the action of the damping spring 16.

Claims

1. A propelling pencil is characterized in that: comprises a pen shell, a movement component and a core storage tube (2); the movement assembly is arranged in the pen shell, and a movement pressing spring is arranged between the movement assembly and the core storage tube (2); a pressing spring (15) is arranged between the front end of the pen shell and the front end of the movement assembly; a limiting rib (401) matched with a gear (17) of the movement assembly is arranged on the inner wall of the pen shell, and a first sliding groove (1701) matched with the limiting rib (401) is arranged on the outer side wall of the gear (17); the movement assembly can move under stress, when the limiting rib (401) is matched in the first sliding groove (1701) and the opening of the movement assembly is in an open state, the head of the movement assembly extends into the head of the pen shell, and a lead can be filled in the movement assembly; when the end part of the limiting rib (401) is abutted to the tooth groove of the gear (17), the head part of the movement assembly extends out of the head part of the pen shell, and the blooming of the movement assembly is in a closed state.

2. The propelling pencil of claim 1, wherein: the propelling pencil further comprises a connector, the connector is connected between the propeller of the movement assembly and the core storage tube, and the movement pressing spring is arranged between the movement assembly and the connector.

3. The propelling pencil of claim 2, wherein: the movement assembly comprises the propeller (5), a driving assembly, a flowering assembly and a damping head (6); the flower-forming assembly comprises a machine core front sleeve (7), the outer side wall of the machine core front sleeve (7) is rotatably connected with the gear (17), and the damping head (6) is connected to the front end of the machine core front sleeve (7); the driving assembly comprises a rotating wheel (18) and a core rear sleeve (19), the core rear sleeve (19) is matched with the rear end of the core front sleeve (7), the rotating wheel (18) is sleeved outside the core front sleeve (7) and is positioned between the gear (17) and the core rear sleeve (19), and the core pressing spring (20) is arranged between the core rear sleeve (19) and the connector (1); when the limiting rib is pressed, the movement assembly moves forwards, the rotating wheel (18) drives the gear (17) to rotate, and the limiting rib (401) can be inserted into the first sliding groove (1701) or the tooth groove of the gear (17).

4. The propelling pencil of claim 3, wherein: the outer side wall of the rotating wheel (18) is provided with a second sliding groove (1801) matched with the limiting rib (401), and the limiting rib (401) is in sliding fit in the second sliding groove (1801).

5. The propelling pencil of claim 3, wherein: a connecting hole (704) is formed in the side wall of the movement front sleeve (7), a bulge (1904) matched with the connecting hole (704) is formed in the side wall of the movement rear sleeve (19), and the bulge (1904) is connected to the side wall of the movement rear sleeve (19) through an elastic sheet (1902); when the front end of the movement rear sleeve (19) is inserted into the rear end of the movement front sleeve (7), the bulge (1904) is embedded into the connecting hole (704).

6. The propelling pencil of claim 5, wherein: the joint of the elastic sheet (1902) and the bulge (1904) is provided with a guide inclined plane (1905).

7. The propelling pencil of claim 5, wherein: the side wall of the core rear sleeve (19) is provided with an accommodating hole (1903), one end of the elastic sheet (1902) is connected to the front side wall of the accommodating hole (1903), and the bulge (1904) is exposed out of the accommodating hole (1903).

8. A propelling pencil according to claim 3, wherein: a first limit ring (1901) is arranged on the outer side wall of the movement rear sleeve (19), and the front end face of the first limit ring (1901) abuts against the rear end face of the movement front sleeve (7); the rear end face of the rotating wheel (18) abuts against the front end face of the first limiting ring (1901); the front end of the movement pressing spring (20) is abutted against the rear end face of the first limiting ring (1901).

9. The propelling pencil of claim 8, wherein: the front end of the connector (1) is inserted into the inner core rear sleeve (19), a first limiting step (101) is arranged on the side wall of the connector (1), the inner core pressing spring (20) is sleeved outside the joint of the inner core rear sleeve (19) and the connector (1), and the rear end of the inner core pressing spring (20) abuts against the step surface of the first limiting step (101).

10. The propelling pencil of claim 3, wherein: the outer side wall of the core front sleeve (7) is provided with a second limiting ring (703), and the front end face of the gear (17) is abutted against the rear end face of the second limiting ring (703).

11. The propelling pencil of claim 9, wherein: the flowering assembly further comprises a core inner sleeve (8) and a flower (9), the core inner sleeve (8) is tightly matched in the core front sleeve (7), the flower (9) is arranged in the core inner sleeve (8), a core spring (10) is arranged between the flower (9) and the core inner sleeve (8), the front end of the propeller (5) extends into the core inner sleeve (8) to be connected with the rear end of the flower (9), and the rear end of the propeller (5) extends into the core rear sleeve (19) to be connected with the front end of the connector (1); the propeller (5) can push the flower (9) to move in the inner sleeve (8) of the movement.

12. The propelling pencil of claim 11, wherein: the front end of the movement rear sleeve (19) is provided with a third limiting ring (1906), the front end of the propeller (5) is provided with a second limiting step (501), and the second limiting step (501) is limited at the front side of the third limiting ring (1906).

13. The propelling pencil of claim 9, wherein: the side wall of the flower (9) is provided with a third limiting step (901), the inner wall of the inner sleeve (8) of the movement is provided with a fourth limiting ring (801), the movement spring (10) is sleeved outside the flower (9), one end of the movement spring (10) abuts against the rear end face of the fourth limiting ring (801), and the other end of the movement spring (10) abuts against the front end face of the third limiting step (901).

14. The propelling pencil of claim 11, wherein: the blooming assembly further comprises an opening and closing driving assembly, the opening and closing driving assembly comprises a blocking opening (11) and a closing piece (12), and the closing piece (12) is arranged in the front end of the inner sleeve (8) of the movement and is positioned on the front side of the fourth limiting ring (801); the blocking opening (11) is positioned in the front end of the movement front sleeve (7) and positioned on the front side of the movement inner sleeve (8); the front end of the flower (9) can move between the blocking opening (11) and the closing part (12), the front end of the flower (9) is closed when the front end of the flower (9) extends into the closing part (12), and the front end of the flower (9) is opened when the front end of the flower (9) extends into the blocking opening (11).

15. The propelling pencil of claim 14, wherein: the side wall of the flower (9) is provided with a ball (13), the side wall of the flower (9) is provided with an embedded groove, one side of the ball (13) is embedded into the embedded groove, and the other side of the ball (13) can be in rolling fit with the inner wall of the closing part (12) and the inner wall of the blocking opening (11).

16. The propelling pencil of claim 14, wherein: the front end of the closing part (12) is provided with a guide opening (1201).

17. The propelling pencil of claim 14, wherein: the aperture of the blocking opening (11) is larger than that of the closing part (12); the front end of the blocking opening (11) is provided with a closing opening, and the minimum aperture of the closing opening is smaller than that of the closing piece (12).

18. The propelling pencil of claim 17, wherein: the front end of the core front sleeve (7) is internally provided with a fourth limiting step (701), the outer wall of the closing-in of the blocking opening (11) abuts against the fourth limiting step (701), and the rear end face of the blocking opening (11) abuts against the front end face of the core inner sleeve (8).

19. The propelling pencil of claim 18, wherein: the front end of the core front sleeve (7) is provided with a convex neck (702), the rear end of the pressing spring (15) is sleeved outside the convex neck (702), and the front end of the pressing spring (15) is abutted against the head of the pen shell.

20. The propelling pencil of claim 19, wherein: the rear end of the damping head (6) extends into the convex neck (702), the front end of the damping head (6) is exposed out of the convex neck (702), and the front end of the damping head (6) can penetrate through a pen point hole at the head of the pen shell to be exposed out of the pen shell.

21. The propelling pencil of claim 20, wherein: the rear end of the damping head (6) is in sliding fit with the convex neck (702), and a damping spring (16) is arranged between the damping head (6) and the closing-in of the blocking opening (11).

22. The propelling pencil of claim 1, wherein: the propelling pencil further comprises a pressing component, wherein the pressing component comprises a pressing connector (21) and a top cap (22); the pressing connector (21) is limited in the rear end of the pen shell, one end of the pressing connector (21) is connected with the rear end of the storage core tube (2), and the other end of the pressing connector (21) is connected with the top cap (22).

23. The propelling pencil of claim 22, wherein: the pen cap is characterized in that a fifth limiting step (2101) is arranged on the outer side wall of the pressing connector (21), a fifth limiting ring (301) is arranged on the inner wall of the rear end of the pen shell, and the rear end face of the fifth limiting step (2101) can be limited on the front end face of the fifth limiting ring (301).