CN203246219U

CN203246219U - Automatic pen capable of opening and closing refill protecting device without action

Info

Publication number: CN203246219U
Application number: CN 201220651462
Authority: CN
Inventors: 彭阔羽
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-11-30
Filing date: 2012-11-30
Publication date: 2013-10-23
Anticipated expiration: 2022-11-30

Abstract

The utility model discloses an automatic pen capable of opening and closing a refill protecting device without an action. According to the utility model, the key technical points are that a retractable sleeve rod is sleeved in a pen barrel; a refill is sleeved in the retractable sleeve rod; the retractable sleeve rod is connected with a push rod through a magnet on the retractable sleeve rod; an elastic retractable sleeve rod upper clamping buckle and an elastic retractable sleeve rod lower clamping buckle are arranged on the wall of the upper pen barrel and correspond to a recess and a longitudinal toothed groove in the upper part of the retractable sleeve rod; a rubber sleeve is arranged outside the lower pane barrel; and hydraulic oil is filled in a space formed between the rubber sleeve and the outer wall of the pen barrel. When the pen is held by hand to press the hydraulic oil, the push rod is upwardly pushed by the hydraulic oil to move upwards, the retractable sleeve rod is driven by the magnet to move upwards and a pen head protective sleeve connected to the bottom end of the retractable sleeve rod retracts upward, so that the pen head is exposed to provide convenience for writing; and when the hand is released, the retractable sleeve rod moves downwards to get back into the original shape and the pen head is concealed. According to the utility model, a purpose of automatically opening the refill protecting device and automatically closing the refill protecting device is achieved and the writing efficiency is increased.

Description

A kind ofly need not to move the mechanical pencil that opens and closes pencil lead protector

Technical field

The utility model belongs to writing implement, is specifically related to a kind of mechanical pencil that opens and closes pencil lead protector that need not to move.

Background technology

Generally, be without prejudice in order to guarantee the pen core nib, durable in use, we must install a pencil lead protector at every pen, such as adopting the pen cap, or adopt the modes such as a top knob makes in the extended or retracted pen container of pen core.But no matter adopt which kind of present mode, all need to accomplish following 2 points: use operates first the pen core nib is come out before, operates after using the pen core nib is hidden again.We just can not write if lacked first step, have lacked second step pen core nib and have exposed outside, just can not protect pen core, the situation that pen core and other objects touch easily occurs.Such as, because of carelessness the pen of putting on the table being touched down on the ground, pen core is smashed can not be write, or pen is placed on writing case or is clipped on the clothes, reveals the phenomenon of polluting stationery and clothes etc. and prepared Chinese ink occurs.This phenomenon of forgetting the operation second step for some careless persons or young student, happens occasionally, and serves inconvenience for their learning tape, and also band is served unnecessary waste.If can save above-mentioned two actions that open and close a protective device, will improve writing speed, also can more effectively protect pen core.

Summary of the invention

The purpose of this utility model is for the above-mentioned problems in the prior art, and a kind of mechanical pencil that opens and closes pencil lead protector that need not to move is provided.

The purpose of this utility model realizes by the following technical solutions: this need not to move the mechanical pencil that opens and closes pencil lead protector, comprises pen core, pen container, the cap for brush and pen clip; Be characterized in: pen container is divided into up and down two-section, upper section diameter is larger than lower section diameter, upper section pen container closely is connected by the buckle draw-in groove with the circular arc flange interface of lower section pen container upper outside both sides symmetry by the circular arc flange interface of inboard both sides, its underpart symmetry, leaves the axial clearance of two symmetries between the circular arc flange interface on both sides; Be set with columnar contraction loop bar in pen container, shrinking the loop bar inner sleeve has pen core, and the pen core top card is in the cap for brush, and the cap for brush is threadedly connected to the top of pen container; Both sides, described contraction loop bar top are processed as the circular arc flange of two symmetries, the top of two circular arc flanges is provided with two symmetrical grooves, the bottom symmetry of two circular arc flanges is embedded with magnet, the middle part of the circular arc flange on right side is provided with one section vertical teeth groove, centre on two circular arc flanges is provided with longitudinally groove, and from described groove with vertically pass the teeth groove; Formed two spaces are provided with the push rod of two symmetries between described two circular arc flanges, also are embedded with respectively magnet with magnet corresponding position, two circular arc flange bottoms on two push rods, and push rod and contraction loop bar are pulled together; The both sides, top of push rod are respectively equipped with projection, projection is provided with shell fragment, the shell fragment outside is provided with the decorative pearl on top of an official cap, the decorative pearl on top of an official cap extend in the vertical groove that shrinks on two the circular arc flanges in loop bar top, right side projection lower end addition pushing surface chamfering, pushing surface chamfering also extend in the vertical groove that shrinks on two the circular arc flanges in loop bar top; One section of the bottom of two push rods extend into described upper cutting in two symmetrical axial clearances leaving between the circular arc flange interface on pen container bottom and lower section pen container top; The push rod top offsets by spring and cap for brush bottom, the bottom outer wall of the shrinking loop bar written protective sleeve that has been threaded; Be provided with buckle on two elastic shrinkage loop bars with two groove corresponding positions of shrinking on two the circular arc flanges in loop bar top on section pen container barrel, be provided with buckle under the elastic shrinkage loop bar with vertical teeth groove corresponding section of shrinking on the loop bar upper right circular arc flange on section pen container barrel; The decorative pearl on top of an official cap on the described push rod shell fragment can back down buckle on the elastic shrinkage loop bar and make it to break away from the groove that shrinks on the loop bar when push rod moves up, and simultaneously, buckle is stuck in the vertical teeth groove that shrinks loop bar under the elastic shrinkage loop bar; The pushing surface chamfering of push rod projection lower end can be pushed buckle under the elastic shrinkage loop bar open and make it to break away from the vertical teeth groove that shrinks on the loop bar when push rod moves down on earth, and simultaneously, buckle is stuck in the groove that shrinks on the loop bar on the elastic shrinkage loop bar;

Be surrounded by a columnar rubber sleeve on the lower section pen container outer wall under the described lower section pen container top circular arc flange interface, uniform ring is wound with some laterally protruding arc support shell fragments in rubber sleeve and lower the section formed space of pen container outer wall, in rubber sleeve and the lower section formed space of pen container outer wall, be full of hydraulic oil, the rubber sleeve upper end is sealedly attached to down the lower end of cutting pen container top circular arc flange interface by viscose glue, extend at two and to be provided with two pressure oil pushing blocks between the circular arc flange interface that cuts pen container bottom and lower section pen container top bottom the push rod in the axial clearance, hydraulic oil is applied to oil pressure bottom two push rods by pushing block; Cut down the heelpiece that pen container lower end outer wall is connected with annular, the rubber sleeve lower end is sealedly attached to the heelpiece outside by viscose glue, and nib is surely overlapped by viscose glue and is enclosed within on the heelpiece of lower section pen container of adhesion rubber sleeve; The described written protective sleeve that shrinks the loop bar bottom that is connected to can move up and down in nib is overlapped surely with shrinking loop bar, and during contracting, cartridge exposing comes on shrinking loop bar, and when shrinking loop bar and return to normal, pen core is hidden in the written protective sleeve.

Further, described pen clip is installed in and cuts pen container top one side, and pen clip top is provided with the groove of opening upwards, and inserts and be located in the projection slotted eye that cuts pen container top one side; Be provided with the pen clip button at the slotted eye lateral wall, the pen clip button inboard with pen clip groove the right matches, and after the pen clip button was thrown off, pen clip can move up and down along slotted eye; Have a hole in the pen clip bottom, be positioned at the outer projection of pen container with buckle on the described upper elastic shrinkage loop bar that cuts the pen container right side and match; When opening the pen clip button, pen clip energy down sliding, misfit in buckle outside projection and pen clip hole on the elastic shrinkage loop bar, when the pen clip base projections slide into the elastic shrinkage loop bar under buckle outside projection when offseting, on the elastic shrinkage loop bar under buckle and the elastic shrinkage loop bar buckle stopped and can not move by pen clip.

The flat shape of buckle outside projection is identical with the flat shape in pen clip hole on the elastic shrinkage loop bar on described upper section pen container right side, is its top and the bottom for semicircle, and the centre is square dentation.

All be carved with screw thread on the bottom inner hole wall of the described cap for brush and the outer hole wall, on the hole inner thread that is threadedly connected to the pen container top on the outer hole wall of the cap for brush, the cap for brush is carved threaded packing ring by the outer wall that has been threaded on its inner hole wall, packing ring top evenly has several longitudinal cracks, and the diameter of bore of packing ring is up-small and down-big.

The utility model is held at the rubber sleeve place that cuts down pen container when writing, by the strength squeezed fluid force feed that holds a pen, the energy that produces holding a pen passes to the pressure oil pushing block of push rod lower end by hydraulic oil, block thereby push rod is moved up open on the elastic shrinkage loop bar, drive the upwards contracting of contraction loop bar by magnet, finish the action of opening pen core.Stop opening buckle under the elastic shrinkage loop bar by the spring push rod that rebounds after pen looses one's grip, take back the contraction loop bar by magnet again, finish closed action.

The utility model has realized automatically opening the purpose of pencil lead protector and auto-closing pencil lead protector, has improved and has write efficient, has stopped people owing to the careless wasting phenomenon that makes pen core damage and cause, and has more effectively protected pen core.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment.

Fig. 2 is the broken away view of Fig. 1.

Fig. 3 is push rod and contraction loop bar right side view partly among Fig. 1.

Fig. 4 is that the A-A of Fig. 3 is to sectional view.

Fig. 5 is the longitudinal section at lower section pen container rubber sleeve place among Fig. 1.

Fig. 6 is the sectional elevation at lower section pen container rubber sleeve place among Fig. 1.

Fig. 7 is the right side view of pen clip among Fig. 1.

Fig. 8 is the cutaway view of the cap for brush among Fig. 1.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is described in further detail.

Referring to Fig. 1 and Fig. 2, in the present embodiment, pen container 1 is divided into up and down two-section, as can be seen from Figure 2, upper section pen container 101 diameters are larger than lower section pen container 102 diameters, and the circular arc flange interface 104 of the circular arc flange interface 103 by upper section pen container 101 lower inside both sides symmetries and lower section pen container 102 upper outside both sides symmetries is connected with draw-in groove by buckle 105 and closely is connected, and leaves the axial clearance 107 of two symmetries between the circular arc flange interface on both sides; Be set with columnar contraction loop bar 2 in pen container 1, shrinking loop bar 2 inner sleeves has pen core 3, and pen core 3 top card are in the cap for brush 4, and the cap for brush 4 is threadedly connected to the top of pen container 1.Referring to Fig. 2, shrink the circular arc flange 201 that both sides, loop bar 2 top are processed as two symmetries, in conjunction with Fig. 3, the top of two circular arc flanges 201 is provided with two symmetrical grooves 202, the bottom symmetry of two circular arc flanges 201 is embedded with magnet 203, the centre that the middle part of the circular arc flange on right side is provided with on 204, two circular arc flanges of one section vertical teeth groove is provided with longitudinally groove 205, and passes from described groove 202 and vertical teeth groove 204.Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, formed two spaces are provided with the push rod 5 of two symmetries between two circular arc flanges 201, also be embedded with respectively magnet 501 with two circular arc flanges, 201 bottom magnet, 203 corresponding positions on two push rods 5, push rod 5 and contraction loop bar 2 are pulled together; As can be seen from Fig. 2, the both sides, top of push rod 5 are respectively equipped with projection 502, projection 502 is provided with shell fragment 503, shell fragment 503 outsides are provided with the decorative pearl on top of an official cap 504, the decorative pearl on top of an official cap 504 extend in the vertical groove 205 that shrinks on two the circular arc flanges 201 in loop bar 2 tops, right side projection 502 lower end addition pushing surface chamferings 505, pushing surface chamfering 505 also extend in the vertical groove 205 that shrinks on two the circular arc flanges 201 in loop bar 2 tops; The bottom of two push rods 5 extend into for one section 506 in two symmetrical axial clearances 107 leaving between the circular arc flange interface that cuts pen container bottom and lower section pen container top.As can be seen from Fig. 1, push rod 5 tops offset by spring 6 bottom with the cap for brush 4, the bottom outer wall of the shrinking loop bar 2 written protective sleeve 7 that has been threaded; Be provided with buckle 108 on two elastic shrinkage loop bars with two groove corresponding positions of shrinking on two the circular arc flanges in loop bar 2 tops on section pen container 101 barrels, be provided with buckle 109 under the elastic shrinkage loop bar with vertical teeth groove corresponding section of shrinking on the loop bar 2 upper right circular arc flanges on section pen container 101 barrels; The decorative pearl on top of an official cap 504 on the shell fragment 503 of push rod 5 can back down buckle 108 on the elastic shrinkage loop bar and make it to break away from the groove 202 that shrinks on the loop bar 2 when push rod 5 moves up, and simultaneously, buckle 109 is stuck in the vertical teeth groove 204 that shrinks loop bar 2 under the elastic shrinkage loop bar; The pushing surface chamfering 505 of projection 502 lower ends of push rod 5 is when push rod 5 moves down on earth, can push buckle 109 under the elastic shrinkage loop bar open and make it to break away from the vertical teeth groove 204 that shrinks on the loop bar 2, simultaneously, buckle 108 is stuck in the groove 202 that shrinks on the loop bar 2 on the elastic shrinkage loop bar.

Referring to Fig. 1, Fig. 2, Fig. 5, Fig. 6, cut down on the outer wall of lower section pen container 102 under the pen container 102 top circular arc flange interfaces 104 and be surrounded by a columnar rubber sleeve 8, uniform ring is wound with the some laterally arc support shell fragments 9 of projection in rubber sleeve 8 and the formed space of lower section pen container 102 outer walls, in rubber sleeve 8 and the formed space of lower section pen container 102 outer walls, be full of hydraulic oil 10, rubber sleeve 8 upper ends are sealedly attached to down the lower end of cutting pen container 102 top circular arc flange interfaces 104 by viscose glue, extend at two that push rod 5 bottoms in the axial clearance are provided with two pressure oil pushing blocks 11 between the circular arc flange interface that cuts pen container bottom and lower section pen container top, hydraulic oil 10 is applied to two push rod 5 bottoms by pushing block 11 with oil pressure; Cut down the heelpiece 110 that pen container 102 lower end outer walls are connected with annular, rubber sleeve 8 lower ends are sealedly attached to heelpiece 110 outsides by viscose glue, and nib is surely overlapped 12 and is enclosed within on the heelpiece 110 of lower section pen container 102 of adhesion rubber sleeve 8 by viscose glue; Being connected to the written protective sleeve 7 that shrinks loop bar 2 bottoms can surely overlap in 12 in nib and move up and down with shrinking loop bar 2, and during contracting, pen core 3 exposes on shrinking loop bar 2, and when shrinking loop bar 2 and return to normal, pen core 3 is hidden in the written protective sleeve 7.

Referring to Fig. 1, Fig. 2 and Fig. 7, pen clip 13 is installed in and cuts pen container 101 tops one side, and as seen, pen clip 13 tops are provided with the groove 131 of opening upwards from Fig. 1 and Fig. 2, and inserts and be located in the projection slotted eye 111 that cuts pen container 101 tops one side; Be provided with pen clip button 112 at slotted eye 111 lateral walls, match with the pen clip button 132 of the inboard, groove 131 the right of pen clip 13, after the pen clip button was thrown off, pen clip 13 can move up and down along slotted eye 111; Have a hole 133 in pen clip 13 bottoms, be positioned at the outer projection of pen container with buckle 108 on the elastic shrinkage loop bar on upper section pen container 101 right sides and match; When opening the pen clip button, pen clip 13 energy down slidings, misfit in buckle 108 outside projections and pen clip hole 133 on the elastic shrinkage loop bar, when the pen clip base projections slide into the elastic shrinkage loop bar under buckle 109 outside projections when offseting, on the elastic shrinkage loop bar under buckle 108 and the elastic shrinkage loop bar buckle 109 stopped and can not move by pen clip 13.As can be seen from Fig. 7, the flat shape in pen clip hole 133 is, its top and the bottom are semicircle, and the centre is square dentation, on to cut the flat shape of buckle 108 outside projections on the elastic shrinkage loop bar on pen container 101 right sides identical with it.

Referring to Fig. 2 and Fig. 8, all be carved with screw thread on the bottom inner hole wall of the cap for brush 4 and the outer hole wall, on the hole inner thread that is threadedly connected to pen container 1 top on the outer hole wall of the cap for brush, the cap for brush 4 is carved threaded packing ring 14 by the outer wall that has been threaded on its inner hole wall, packing ring 14 tops evenly have several longitudinal cracks, and the diameter of bore of packing ring 14 is up-small and down-big.

The course of work of the present utility model is as follows: when mechanical pencil did not use, pen core 3 was hidden in the written protective sleeve 7, and buckle 108 is stuck in two grooves that shrink loop bar 2 tops on two elastic shrinkage loop bars.When the people holds a pen when writing, hand just in time is held in rubber sleeve 8 places of pen container 1, the grip of hand overcomes the elastic force that arc supports shell fragment 9, squeezed fluid force feed 10, hydraulic oil 10 transmission of pressures are given two pressure oil pushing blocks 11, pressure oil pushing block 11 promotes two push rods 5 and moves upward, compress the spring 6 at its top, the decorative pearl on top of an official cap 504 on both sides, the top shell fragment 503 of two push rods 5 moves upward simultaneously, back down buckle 108 on two elastic shrinkage loop bars, make contraction pole 2 under magnet magnetic force, move upward with push rod 5, simultaneously, buckle 109 is stuck in the vertical teeth groove 205 that shrinks on the loop bar 2 under the elastic shrinkage loop bar.At this moment be connected in the written protective sleeve 7 that shrinks on the loop bar 2 and also move upward thereupon, the pen core that is hidden in has wherein been revealed out, thereby write.Write finish after; hand unclamps and puts down mechanical pencil; at this moment hydraulic oil 10 falls after rise; at this moment; push rod 5 is under the elastic force effect of spring 6; move downward; the pushing surface chamfering 505 of projection 502 lower ends of push rod 5 is when push rod 5 moves down on earth; push buckle 109 under the elastic shrinkage loop bar open; move downward under the magneticaction of contraction pole 2 by the magnet on it; buckle 108 on two elastic shrinkage loop bars is stuck in again in two grooves that shrink loop bar 2 tops, thereby returns to the state when originally not using, reach the purpose of protection pen core.

The utility model has a hole 133 in pen clip 13 bottoms, being positioned at the outer projection of pen container with buckle 108 on the elastic shrinkage loop bar on upper section pen container 101 right sides matches, can be in these pen clip hole 133 interior move left and right, such scheme has following purposes: one, when holding pen when writing, be convenient to buckle 108 on the elastic shrinkage loop bar under the decorative pearl on top of an official cap 504 effects on the push rod 5, the 133 interior movements of pen clip hole flick to the right; They are two years old, when sliding pen clip 13, the projection that buckle 108 is positioned at outside the pen container on pen clip hole 133 and the elastic shrinkage loop bar misfits, withstood by pen clip can not move left and right on the right side of buckle 108 on the elastic shrinkage loop bar, therefore, contraction pole can not be moved upward, mechanical pencil is lockable, so just can prevent when pen when being placed in the pocket, push because of carelessness rubber sleeve 8 places and make pen open the clothes of making dirty; They are three years old, do not slide pen clip 13, it is identical that buckle 108 is positioned at the outer projection of pen container on pen clip hole 133 and the elastic shrinkage loop bar, when we do not write, when the coat pocket, clothes can be clipped in the slotted eye that both coincide with pen clip, makes that buckle 108 can not move easily on the elastic shrinkage loop bar, also can prevent from pushing because of carelessness rubber sleeve 8 places and make the pen open the clothes of making dirty; The flat shape that buckle 108 on pen clip hole 133 and the elastic shrinkage loop bar is positioned at the outer projection of pen container is designed to shown in Figure 7, and purpose is the resistance that increases between clothes and slotted eye, thereby more firm; They are four years old, hold the rubber sleeve place of pen when us, shrink loop bar 2 and move upward, expose pen core 3 after, slide pen clip 13, make that buckle 109 outside projections offset under pen clip base projections and the elastic shrinkage loop bar, buckle 109 is stopped and can not move by pen clip 13 under the elastic shrinkage loop bar, like this, and when again writing, even we do not hold the rubber sleeve place of pen, also can write.

The utility model connects packing ring 14 at the cap for brush 4 internal threads, and packing ring 14 diameter of bores are up-small and down-big, and top evenly has several longitudinal cracks, and purpose is that the pen core top is clipped in the cap for brush is more firmly strong.

Claims

1. one kind need not to move the mechanical pencil that opens and closes pencil lead protector, comprise pen core, pen container, the cap for brush and pen clip, it is characterized in that: pen container is divided into up and down two-section, upper section diameter is larger than lower section diameter, upper section pen container closely is connected by the buckle draw-in groove with the circular arc flange interface of lower section pen container upper outside both sides symmetry by the circular arc flange interface of inboard both sides, its underpart symmetry, leaves the axial clearance of two symmetries between the circular arc flange interface on both sides; Be set with columnar contraction loop bar in pen container, shrinking the loop bar inner sleeve has pen core, and the pen core top card is in the cap for brush, and the cap for brush is threadedly connected to the top of pen container; Both sides, described contraction loop bar top are processed as the circular arc flange of two symmetries, the top of two circular arc flanges is provided with two symmetrical grooves, the bottom symmetry of two circular arc flanges is embedded with magnet, the middle part of the circular arc flange on right side is provided with one section vertical teeth groove, centre on two circular arc flanges is provided with longitudinally groove, and from described groove with vertically pass the teeth groove; Formed two spaces are provided with the push rod of two symmetries between described two circular arc flanges, also are embedded with respectively magnet with magnet corresponding position, two circular arc flange bottoms on two push rods, and push rod and contraction loop bar are pulled together; The both sides, top of push rod are respectively equipped with projection, projection is provided with shell fragment, the shell fragment outside is provided with the decorative pearl on top of an official cap, the decorative pearl on top of an official cap extend in the vertical groove that shrinks on two the circular arc flanges in loop bar top, right side projection lower end addition pushing surface chamfering, pushing surface chamfering also extend in the vertical groove that shrinks on two the circular arc flanges in loop bar top; One section of the bottom of two push rods extend into described upper cutting in two symmetrical axial clearances leaving between the circular arc flange interface on pen container bottom and lower section pen container top; The push rod top offsets by spring and cap for brush bottom, the bottom outer wall of the shrinking loop bar written protective sleeve that has been threaded; Be provided with buckle on two elastic shrinkage loop bars with two groove corresponding positions of shrinking on two the circular arc flanges in loop bar top on section pen container barrel, be provided with buckle under the elastic shrinkage loop bar with vertical teeth groove corresponding section of shrinking on the loop bar upper right circular arc flange on section pen container barrel; The decorative pearl on top of an official cap on the described push rod shell fragment can back down buckle on the elastic shrinkage loop bar and make it to break away from the groove that shrinks on the loop bar when push rod moves up, and simultaneously, buckle is stuck in the vertical teeth groove that shrinks loop bar under the elastic shrinkage loop bar; The pushing surface chamfering of push rod projection lower end can be pushed buckle under the elastic shrinkage loop bar open and make it to break away from the vertical teeth groove that shrinks on the loop bar when push rod moves down on earth, and simultaneously, buckle is stuck in the groove that shrinks on the loop bar on the elastic shrinkage loop bar;

2. according to claim 1ly need not to move the mechanical pencil that opens and closes pencil lead protector, it is characterized in that: described pen clip is installed in and cuts pen container top one side, pen clip top is provided with the groove of opening upwards, and inserts and be located in the projection slotted eye that cuts pen container top one side; Be provided with the pen clip button at the slotted eye lateral wall, the pen clip button inboard with pen clip groove the right matches, and after the pen clip button was thrown off, pen clip can move up and down along slotted eye; Have a hole in the pen clip bottom, be positioned at the outer projection of pen container with buckle on the described upper elastic shrinkage loop bar that cuts the pen container right side and match; When opening the pen clip button, pen clip energy down sliding, misfit in buckle outside projection and pen clip hole on the elastic shrinkage loop bar, when the pen clip base projections slide into the elastic shrinkage loop bar under buckle outside projection when offseting, on the elastic shrinkage loop bar under buckle and the elastic shrinkage loop bar buckle stopped and can not move by pen clip.

3. according to claim 2ly need not to move the mechanical pencil that opens and closes pencil lead protector; it is characterized in that: the flat shape of buckle outside projection is identical with the flat shape in pen clip hole on the elastic shrinkage loop bar on described upper section pen container right side; be its top and the bottom for semicircle, the centre is square dentation.

4. according to claim 1ly need not to move the mechanical pencil that opens and closes pencil lead protector; it is characterized in that: all be carved with screw thread on the bottom inner hole wall of the described cap for brush and the outer hole wall; on the hole inner thread that is threadedly connected to the pen container top on the outer hole wall of the cap for brush; the cap for brush is carved threaded packing ring by the outer wall that has been threaded on its inner hole wall; packing ring top evenly has several longitudinal cracks, and the diameter of bore of packing ring is up-small and down-big.