CN1045178C

CN1045178C - Side knock type mechanical pencil

Info

Publication number: CN1045178C
Application number: CN95106538A
Authority: CN
Inventors: 阴山秀平; 植木富二; 光谷良英
Original assignee: Kotobuki and Co Ltd
Current assignee: Kotobuki and Co Ltd; Yamasu Co Ltd
Priority date: 1994-09-27
Filing date: 1995-05-23
Publication date: 1999-09-22
Anticipated expiration: 2015-05-23
Also published as: CN1126147A; TW313073U

Abstract

A side knock type mechanical pencil including a cylindrical shell having a ferrule; a slide member disposed axially movably within the cylindrical shell; a chuck disposed in front of the slide member, with a chuck ring being loosely fitted on the chuck; a chuck spring for urging the chuck backward; and a side knock mechanism provided in the cylindrical shell, the said side knock mechanism comprising a side knock member provided in the cylindrical shell and the slide member, the slide member being movable axially against the backward bias of the chuck spring and having a slant portion for abutment with the side knock member when the side knock member is depressed radially.

Description

Side-knock mechanical pencil

The present invention relates to a kind of side-knock mechanical pencil, refer to a kind of side-knock mechanical pencil that has bar delivering mechanisms such as erasing rubber especially.

Up to now, relevant this kind side-knock mechanical pencil, existing various motions.For example, Japan is real to open in the clear 51-17942 communique, once discloses a kind of propelling pencil as shown in figure 19.According to this habitual example, grip the periphery of the pressing levers of being installed in the hole 21 of beam barrel 20 sides 22 by face with chuck mechanism, one side is pushed this pressing lever 22 with finger, pen core can be sent.Specifically, by pushing with pressing lever 22, its Actuator Division 22a can be connected to the inclined plane part 24a of sliding part set on the axis group 23 24, makes these axis group 23 resistance springs 25 elastic force towards the rear, internal face along beam barrel 20 moves towards the place ahead, can and carry out the knockout action with chuck 26 openings.

Yet in the propelling pencil of this routine, generally speaking, side is positioned at the grip part by mechanism.Therefore, if when the gripping elements that elasticity material such as rubber constituted was set in this part, the diameter of grip part can increase, therefore, the diameter of pen core accepting groove 27 is configured to the degree that can pass through for the one-pen core, and its rear portion is provided with the space that can take in for other preparation pen cores.Yet, in recent years, be provided with the propelling pencil of bar delivering mechanisms such as erasing rubber at the rear portion of a tool, proposed by industrial circle, therefore, be assembled with the side-knock mechanical pencil of these mechanisms in the lump, its rear portion there is no the space that can accommodate the preparation pen core, and the diameter of pen core accepting groove 27 is narrowed, consequently, take in preparation pen core difficulty to some extent.

The purpose of this invention is to provide a kind of side-knock mechanical pencil, its rear portion is provided with sufficient space, in addition, length is defined as can accommodate the pen core accepting groove of many preparation pen cores and the internal diameter of sliding part to be widened, and also gripping elements can be set as required.

Another object of the present invention is in order to overcome in the knockout shortcoming that the most at the beginning need continuously push of side by operation, to send easily in order to make pen core, and provide a kind of except side by the function, also have the side-knock mechanical pencil that function is pushed in the rear end.

Another purpose of the present invention, provide a kind of wherein constitute side by the sliding part of mechanism with the single-piece form, can reduce number of parts in view of the above, and inexpensive, combination also belongs to simple side-knock mechanical pencil.

In order to reach above-mentioned purpose, according to the present invention, obtain a kind of like this side-knock mechanical pencil, it comprises: one has the beam barrel of front-end element, one with axially slidably mode be accommodated in pen core accepting groove in this beam barrel, one is located at the leading section of this pen core accepting groove and the chuck that trip is embedded with the chuck bunching ring, and one with this chuck elastomer of bias voltage towards the rear, and one be located on the above-mentioned beam barrel then by mechanism; It is characterized in that:

Above-mentioned side is located at side on the above-mentioned beam barrel by member by mechanism by one, and one axially be formed with pen core and insert general through hole and have and the inclined plane part of this side by the member butt, can revolt above-mentioned elastomeric biasing force (elastic force) towards the rear simultaneously and constitute at axially movable sliding part; Above-mentioned pen core accepting groove slidably is located at the front portion of above-mentioned sliding part.

Moreover, in order to reach above-mentioned purpose, according to the present invention, obtain a kind of like this side-knock mechanical pencil, it comprises: one has the beam barrel of front-end element, one with axially slidably mode be accommodated in sliding part in this beam barrel, one is located at the leading section of this pen core accepting groove and the chuck that trip is embedded with the chuck bunching ring, one with this chuck elastomer of bias voltage towards the rear, and one be located at side on the above-mentioned beam barrel by mechanism, it is characterized in that:

Above-mentioned side is located at side on the above-mentioned beam barrel by member by mechanism by one, and one have with this side and insert general through hole by the inclined plane part of member butt and axially being formed with pen core, can revolt above-mentioned elastomeric biasing force towards the rear simultaneously and constitute at axially movable above-mentioned sliding part.

By pushing the pressing lever of side member, the inclined plane part so as to the press surface of sliding part can make the elastomeric biasing force towards the rear of sliding part resistance advance, and open chuck send core.As required as if rotation rear portion cap the time, bars such as erasing rubber can be sent towards the rear, and in the time must pushing continuously,, also can be sent core even push the rear end.

Below, will be elaborated with accompanying drawing to the embodiments of the invention assistant.

Shown in Fig. 1 is the skiagraph of the side-knock mechanical pencil of first embodiment of the invention.

Fig. 2 is the side view of Fig. 1 sliding part.

Fig. 3 is the sectional drawing of Fig. 2 sliding part.

Fig. 4 is the bottom view of Fig. 3 sliding part.

Fig. 5 is the sectional drawing along the A-A line of Fig. 1.

Fig. 6 is that the rubber scrape along is accepted the interior perspective view of guide barrel that platform is assembled in Fig. 1.

Fig. 7 is the perspective view of the guide barrel of Fig. 6.

Fig. 8 is the skiagraph of the guide barrel of Fig. 7.

Fig. 9 is the perspective view that the erasing rubber of Fig. 1 is accepted platform.

Figure 10 is the side view of the slip tool of Fig. 9.

Figure 11 is the skiagraph of the slip tool of Fig. 9.

Figure 12 shows that the present embodiment side wants portion's skiagraph by action.

Figure 13 be show that the present embodiment erasing rubber sends action want portion's skiagraph.

Figure 14 is the skiagraph that shows the side-knock mechanical pencil of second embodiment of the invention.

Figure 15 is the side view of Figure 14 sliding part.

Figure 16 is the skiagraph that shows the side-knock mechanical pencil of third embodiment of the invention.

Figure 17 is the skiagraph that shows the side-knock mechanical pencil of fourth embodiment of the invention.

Figure 18 is the skiagraph that shows the side-knock mechanical pencil of fifth embodiment of the invention.

Figure 19 is the sectional drawing of the side-knock mechanical pencil of routine.

Shown in Fig. 1～Figure 13 is the first embodiment of the present invention one, is that relevant a kind of pressing operation is pushed the propelling pencil of being reached by side by reaching the rear end.Among the figure, in the beam barrel 1, the front portion is provided with writes mechanism, and in addition, the place, rear portion is provided with the erasing rubber delivering mechanism.

At first describe with regard to the above-mentioned mechanism of writing.In the beam barrel 1, being provided with can be having the pen core accepting groove 2 of abundant internal diameter in axial sliding, to take in many pen cores simultaneously.The front end of this pen core accepting groove 2 is pressed into and is fixed with chuck 3, and chuck 3 upstreams are embedded with chuck bunching ring 4.The outside of this chuck 3 is provided with sleeve 5, wherein is equipped with the pen core accepting groove 2 chuck spring 6 of bias voltage towards the rear.

In addition, the front end of above-mentioned beam barrel 1, the front-end element 7 that possesses the block rank 7a of portion of chuck bunching ring 4 in screwing togather week, be provided with one in the front-end element 7 in axial front tube 8 slidably, and one can be pressed into for the rear end of this front tube 8 fixing, and slip tool 9 that can perimembranous is supported pen core with certain frictional resistance in it.And, between the rear end and beam barrel 1 of above-mentioned sleeve 5, be provided with in order to absorb the buffer spring 10 that writing is pressed.

Symbol 10a indication be located between beam barrel 1 and aftermentioned sliding part 17 front ends with the return spring of bias voltage towards the rear such as sliding part 17, a little less than the elastic force of this return spring 10a than the elastic force of chuck spring 6 is.This return spring 10a has the following advantages especially.In specific words, when the rear end of pen core accepting groove 2 is connected to the anterior inner segment of sliding part 17, promptly become pressed state, at this moment, the front end chuck portion of chuck 3 becomes a little open state, and becomes the reason that pen core skids.So, even the total length of pen core accepting groove 2 has uneven situation, for the rear end that makes pen core accepting groove 2 not with the anterior inner segment butt of sliding part 17, must a little offer the gap in design usually.Yet,, howsoever, only, just have the worry that sliding part 17 moves forward and backward with its degree of moving about if during gapped formation.Therefore, when return spring 10a, sliding part 17 often rearward can be saved up strength, so can obtain sliding part 17 in front and back slip advantages such as (becoming flexible).

Secondly, describe with regard to rear portion erasing rubber delivering mechanism.Guide barrel 11 shown in Fig. 6～8 is installed in the mode that can extract in the formed big footpath carrier 17a in rear portion of sliding part shown in Figure 3 17.More in detail, this carrier 17a's is formed with annular groove 17b interior week.The circular protrusion 11a that engages with annular groove 17b is formed at the periphery of guide barrel 11.

In addition, on above-mentioned guide barrel 11, axially be formed with a pair of relative groove crack 11b, the rear end of these groove cracks 11b is formed with the large-diameter portion 11c of sealing, therefore, this guide barrel 11 with axially slidably mode insert in the rear portion cap 12 that rotatably links, in the engaging of axle peripheral direction, and distolateral thereafter rear end by above-mentioned rear portion cap 12 is outstanding.

Also have, the front portion of guide barrel 11 is formed with rear portion cap 12 cards only and with its a pair of elasticity card in axially locking ends tab 11d.These elasticity cards end tab 11d in inserting the rear portion cap time, in by the deflection rear portion cap of side inwardly 12 revert to original state after, though guide barrel 11 is rotatable with rear portion cap 12,, therefore, can not pull out at the blocked state of axial one-tenth.

In guide barrel 11, be inserted with at the erasing rubber that axially slidably is supported with erasing rubber 13 and accept platform 14, it engages in the axle peripheral direction.As Fig. 9～shown in Figure 11, this erasing rubber is accepted platform 14 and is equipped with; One tubular body 14a, a pair of by this tubular body 14a extend towards the rear relatively to arm 14b and a pair of inclined protrusions 14c that is located at the outside wall portions of these arms 14b.These inclined protrusions 14c connects on the guide barrel 11 in the groove crack of axial formation 11b, and engages with the inboard formed spiral goove 12a of rear portion cap 12.

As shown in Figure 1, on the grip part of beam barrel 1, the gripping member 15 that is made of rubber etc. is installed, on the side wall portion of the beam barrel 1 at the rear of this gripping member 15, is provided with depressible axial pressing lever 16, this pressing lever 16 for sides by using.The bight of the front end inboard of this pressing lever 16 is with the inclined plane part 17c butt of sliding part 17.More in detail, this sliding part 17 has the structure shown in Fig. 2～3, wherein, has the through hole 17d that for example can once take in the pen core of 2 above 0.5mm diameters, and formation large-diameter portion, large-diameter portion have the inclined plane part 17c that is positioned at pressing lever 16 relative positions fixedly the time.

This inclined plane part 17c forms by the front portion state that falls of subordinate backwards, when pressing lever 16 presses on this inclined plane part 17c and its butt, can make sliding part 17 advance, side at sliding part 17, be formed with the engaging ditch 17e that determines that axial location is used, and at the rear portion sidepiece of set carrier 17a, be formed with spline with engaging ditch 17f, this engaging ditch 17f engages with the rib 1a (Fig. 5) of perimembranous formation in the beam barrel 1.And for example shown in Figure 3, in the interior week of rear portion carrier 17a, be formed with the cross section and for example be the octagonal polygon 17g of portion, bring into play the function of spline to engage with the 11d of polygon portion of guide barrel 11.

In specific words,, link, except side is pressed operation, also can implement the rear end pressing operation by the erasing rubber delivering mechanism of writing mechanism and rear portion with the front portion according to this embodiment.That is, according to the erasing rubber delivering mechanism at rear portion,, must implement rotary manipulation in order to send erasing rubber 13.So, in order to implement this rotary manipulation,,, can't implement rotary manipulation because idle running is when the rotation at rear portion is conveyed to anteriorly when writing mechanism.Therefore, as implied above under this occasion, in order to prevent the idle running of erasing rubber delivering mechanism, make the inboard of sliding part 17 and the inboard of guide barrel 11 form polygonal respectively, for example form octagonal, so that it can only endwisely slip.

According to this embodiment, push owing to also can carry out the rear end, therefore have following advantage.In specific words, in writing, utilize side, can easily send pen core gradually by operation.Yet, still in pen core accepting groove 2, under the state of no show front tube 8, front tube 8 and the pen core taken in are sent at pen core in order to begin to write, must push for several times continuously.Yet side is under the transverse state and implements by operating normally beam barrel 1, and therefore, even chuck 3 is open, pen core always is difficult for descending.Under this occasion, the rear end pressing operation under beam barrel 1 upright state is the most suitable.In addition, in order to repeat to implement to push for several times continuously, push than side by serve as simply with the rear end, and operability is also preferable.

Below, the action with regard to above-mentioned first embodiment is elaborated in conjunction with Figure 12.At first, be state before pushing shown in Figure 12 (A).State thus is shown in when writing if push side pressing lever 16 as Figure 12 (B), and then slided towards the below by the top along the inclined plane part 17c of sliding part 17 in the bight of the front end inboard of pressing lever 16, and sliding part 17 is extruded towards the place ahead.So, the biasing force towards the rear (elastic force) of resistance chuck spring 6, pen core accepting groove 2 and chuck 4 also are forced to advance.In this advanced process, trip was embedded in chuck bunching ring 4 on the chuck 3 and will be connected to the 7a of rank portion in week in the front-end element 7 and be disengaged and tightens, and slip tool 9 can be borrowed before the chuck 3 and then make front tube 8 outstanding.

When releasing was pushed, sliding part 17 can be got back to the rear because of the elastic force of chuck spring 6.By repeating this pressing operation, pen core can be sent, and becomes the state that can write.After writing, if front end is gently pushed up and push pressing lever 16 with paper or finger tip, then chuck 3 can be open, makes pen core and front tube 8 be accommodated in the front-end element 7.

Secondly, explanation is done in the rear end push action of this embodiment.When pushed the enforcement rear end under the relative writing surface situation in vertical state with propelling pencil, the biasing force towards the rear that the erasing rubber delivering mechanism can be revolted chuck spring 6 advanced in beam barrel 1.So, sliding part 17, pen core accepting groove 2 and the chuck 3 etc. that are linked to this mechanism also can advance, and pen core are sent by the same with above-mentioned side.

Have again, when erasing rubber being sent, if the fixing beam barrel 1 of propelling pencil body and during with rear portion cap 12 rotation, erasing rubber is accepted platform 14 can rising in guide barrel 11 by the state shown in Figure 13 (A).This is to engage event with the groove crack 11b of guide barrel 11 because erasing rubber is accepted the inclined protrusions 14c of platform 14.Yet, 17 relations that establish spline of guide barrel 11 and sliding part, and this sliding part 17 and then establish the relation of spline with beam barrel 1.So, erasing rubber is accepted the inclined protrusions 14c of platform 14 along all formed spiral goove 12a in the rear portion cap 12, axially move towards the top the 11b inherence, groove crack that is rotated in guide barrel 11 by rear portion cap 12, and therefore, erasing rubber is accepted the state that platform 14 can be got back to Figure 13 (B).

When supplying with new pen core, if when hand-held rear portion cap is extracted it, can stay sliding part 17, all parts that will be positioned at the erasing rubber delivering mechanism of top by guide barrel 11 take off with unit independently.So,, once many pen cores can be supplied to pen core accepting groove 2 by the carrier 17a of sliding part 17.

Shown in Figure 14～15 is the second embodiment of the present invention.This embodiment only borrows side front tube 8 and pen core can be sent by operation.According to this embodiment, the erasing rubber delivering mechanism at sliding part 17 and rear portion is textural separated, and therefore, the anterior erasing rubber delivering mechanism of writing mechanism and rear portion is independent fully on function.

In specific words, in the rear end of sliding part 17, its rear portion is formed with short guide portion 17h and induces mechanism when supplying with as new pen core.This induce the 17h of mechanism from locating, be pressed in the beam barrel 1 powerfully and be fixed with stationary magazine creel 18.More in detail, the periphery of this stationary magazine creel 18 is formed with

circular protrusion

18a, and 18a is on section for this projection, and the rear end has erection part, and has the inclined plane part that low descends towards the place ahead.So if when with instrument this stationary magazine creel 18 being pressed into by force by the rear end, this circular protrusion 18a can become the state of diabrosis, and stationary magazine creel 18 fully is fixed in the beam barrel.

In this stationary magazine creel 18, extracting freely engaging has guide barrel 11, and the upper surface of stationary magazine creel 18 has funnelform inclined-plane 18b, so that the insertion of the axis direction of pen core is easy.The erasing rubber delivering mechanism of other parts is identical with above-mentioned first embodiment.According to this second embodiment, when replenishing pen core, when hand-held large-diameter portion 11c that is exposed to guide barrel 11 rears or rear portion cap 12 go out the drawing of erasing rubber delivering mechanism, can be under the state of residual stationary magazine creel 18 by beam barrel 1 with mechanism's integral body of blocking removal easily, so, can replenish pen core simply.

In addition, according to this second embodiment,, therefore, needn't consider to take measures to stop rotatablely moving of rear portion is conveyed to the front portion because the erasing rubber delivering mechanism at the propelling pencil mechanism at rear portion and rear portion is independent fully on function.In addition, because system of two mechanisms is independent fully, and propelling pencil mechanism, positively keep by the stationary magazine creel 18 that is fixed in the beam barrel 1 strongly, therefore, pressure when wiping word is conveyed to propelling pencil mechanism so that pen core is unnecessarily sent, or a little bad facts that retreats of erasing rubber, can be avoided.

Have, on the sliding part 17 among this embodiment, be formed with engaging ditch 17e and 17f as shown in figure 15, and corresponding therewith, if the interior perimembranous of beam barrel 1 is when being formed with engaging rib 1a (Fig. 5), and the 1 mutual rotation of sliding part 17 and beam barrel can be prevented, and is therefore preferable.That is, sliding part 17 has the inclined plane part 17c that descends towards the rear, this inclined plane part 17c is in being assembled in beam barrel 1 time, must be positioned at beam barrel 1 on set side by the relative position of member 16, therefore, in when combination,, can obtain the advantage that directionality is provided with well if during the engaging rib 1a combination that the engaging ditch 17e and the 17f of sliding part 17 cooperated beam barrel 1.In addition, these engaging ditch 17e and 17f prevent rotation as long as can bring into play, that is the function of decision position, only are provided with one and also can.Moreover, replace the engaging ditch 17e and the 17f of sliding part 17, if on sliding part 17, form engaging protrusion, form the engaging ditch in the inside of beam barrel 1 accordingly simultaneously, also can obtain identical effect.

Shown in Figure 16 is the third embodiment of the present invention, this embodiment can make side by reaching the rear end pressing operation, sliding part 17 forms single-piece, in specific words, sliding part 17 is by the carrier 17a at rear portion, intervalve 17d between the inclined plane part 17c in this carrier 17a and the place ahead, and it is integrally formed to be formed at the extension 17e of this carrier 17a front portion.The front end of this extension 17e directly has been pressed into chuck 3.Under this occasion, the set return spring 10a of above-mentioned first and second embodiment also can omit.

Shown in Figure 17 is the fourth embodiment of the present invention, and this embodiment can only make side by operation, and the rearward end of sliding part 17 is shorter, and the erasing rubber delivering mechanism also is removed.So according to present embodiment, the integral body of propelling pencil can form suitable weak point, therefore can form a kind of mini propelling pencil.In addition, but the 13a double as among the figure is the short erasing rubber of cap.

Shown in Figure 18 is the fifth embodiment of the present invention, identical with the above-mentioned second and the 4th embodiment, can only do side by; In this propelling pencil, there is no the gripping member in the foregoing description one to four, number of parts is reduced as far as possible.

The present invention is because of having above-mentioned formation, and in side-knock mechanical pencil, the rear portion is provided with sufficient space, and the internal diameter increase of the pen core accepting groove of qualification length and sliding part also can be provided with gripping member simultaneously can accommodate the preparation pen core.In addition, side is must push continuously when sending core at first by the shortcoming of operating, can send easily for making pen core, and the present invention also has the rear end and pushes function.Moreover, by sliding part is formed single-piece, number of parts is reduced, simultaneously inexpensive, make up also very simple.

Claims

1. side-knock mechanical pencil, it comprises:

One has the beam barrel of front-end element,

One can along above-mentioned beam barrel be inserted in sliding part in this beam barrel axially slidably,

One is connected in the chuck of this sliding part,

One trip is embedded in the chuck bunching ring of above-mentioned chuck,

One in order to pushing the related chuck of above-mentioned sliding part all the time to the elastic component at the rear of above-mentioned beam barrel, and

One be located at the place ahead sidewall of beam barrel and borrow push above-mentioned sliding part with opposing by above-mentioned elastic component was produced back to pushing force so that the side that above-mentioned sliding part slides to the preceding extreme direction of beam barrel by mechanism;

It is characterized in that: above-mentioned sliding part has by the rake of above-mentioned side by mechanism's butt, be located at this rake rear and have the large-diameter portion that external diameter equates with the internal diameter of above-mentioned beam barrel substantially, and connect above-mentioned rake with above-mentioned large-diameter portion and along the pen core path of axis direction extension, and sliding part constitutes solid memder.

2. side-knock mechanical pencil according to claim 1 is characterized in that, this large-diameter portion is formed with to hold receives pen core to import the guide structure of above-mentioned pen core path.

3. side-knock mechanical pencil according to claim 2 is characterized in that, this guide structure is the infundibular segment that is formed at above-mentioned large-diameter portion inner face.

4. side-knock mechanical pencil according to claim 1 is characterized in that, this propelling pencil also has the anti-locking mechanism of rotation that prevents that above-mentioned sliding part and above-mentioned beam barrel from rotating mutually.

5. side-knock mechanical pencil according to claim 4 is characterized in that, the anti-locking mechanism of this rotation comprises either party the engaging groove that is formed at above-mentioned beam barrel or above-mentioned sliding part, and is located at the opposing party's of above-mentioned beam barrel or above-mentioned sliding part engaging protrusion.

6. side-knock mechanical pencil according to claim 1 is characterized in that this side has pressing member by mechanism, and this pressing member is disposed at the back quadrate part of grip part.

7. side-knock mechanical pencil according to claim 6 is characterized in that the grip part of this beam barrel is provided with gripping member.

8. side-knock mechanical pencil according to claim 1 is characterized in that, the rearward end of this chuck is connected in the above-mentioned pen core path of above-mentioned sliding part.

9. side-knock mechanical pencil according to claim 1 is characterized in that, this sliding part has the portion of receiving of holding that is located at its leading section, and this sliding part slidably is plugged in freely by a rearward end and above-mentionedly holds the connecting cylinder of the portion of receiving and connect chuck.

10. side-knock mechanical pencil according to claim 9, it is characterized in that, be provided with a gap between the rearward end of this connecting cylinder and the above-mentioned sliding part, and between the front end of above-mentioned beam barrel and above-mentioned sliding part, be provided with the back-moving spring of above-mentioned sliding part being pushed to the rear of above-mentioned beam barrel.

11. side-knock mechanical pencil according to claim 9 is characterized in that, the size of the internal diameter of the above-mentioned pen core path of the internal diameter of this connecting cylinder and above-mentioned sliding part forms can hold many pen cores simultaneously.

12. side-knock mechanical pencil according to claim 1 is characterized in that, the size of the internal diameter of this pen core path forms can hold many pen cores simultaneously.

13. side-knock mechanical pencil according to claim 1 is characterized in that, this propelling pencil has the bar delivering mechanism in the rearward end that is combined in above-mentioned beam barrel.

14. side-knock mechanical pencil according to claim 13 is characterized in that, the above-mentioned large-diameter portion of this sliding part has the portion of receiving of holding of rearward extending, and above-mentioned bar delivering mechanism is embedded in the above-mentioned portion of receiving of holding.

15. side-knock mechanical pencil according to claim 13 is characterized in that, this beam barrel has to be fixed in away from holding of the position of the rearward end of above-mentioned sliding part in its rear portion receives tube, above-mentioned hold to receive be plugged with the above-mentioned bar delivering mechanism that can pull up in the tube.

16. side-knock mechanical pencil according to claim 13, it is characterized in that, but this sliding part and above-mentioned bar delivering mechanism connect into the rear end pressing operation freely, and above-mentioned propelling pencil has the anti-locking mechanism of first rotation that can prevent mutual rotation between above-mentioned sliding part and above-mentioned bar delivering mechanism, and prevents the mutual anti-locking mechanism of second rotation that rotates between above-mentioned sliding part and above-mentioned beam barrel.