CN2253699Y - Double-clamp type propelling pencil - Google Patents

Abstract

The utility model relates to a double-collet type propelling pencil which can reduce the loss of a broken pencil lead and simultaneously a buffering sleeve barrel and a pressure member are both provided with rotation stop devices. The double-collet type propelling pencil is composed of a pencil pipe, a pencil lead pipe, a back part collet, a collet fastening ring, a connecting head, a front part collet, an elastic body, a tail plug, and the pressure member, wherein, the pressure member is provided with a rotation stop mechanism which can be made to do axial movement towards the tail plug but can not be rotated. The utility model is characterized in that a peripheral part of the pressure member is provided with a clamping bulge, and an inner peripheral surface of the tail plug is provided with an axial clamping groove which is used for clamping the clamping bulge for preventing a pencil lead from being twisted off.

Description

Double fastener hair style propelling pencil

The utility model relates to the double fastener hair style propelling pencil with anterior chuck and rear portion chuck, relate in particular to a kind of possess outer be embedded with the chuck bunching ring in order to rear portion chuck that pen core is quantitatively pushed out and the double fastener hair style propelling pencil that prevents the anterior chuck that pen core is shunk back backward.

In the past, this double fastener hair style propelling pencil mainly was that the purpose for the loss that reduces remaining pipe nipple pen core designs, yet had complex structure, and combination assembling and decompose the problem of difficulty.This again double fastener hair style propelling pencil, when the front and back section of a joint pen core in the clampings simultaneously of two chucks, one of them chuck was just in case former thereby when rotating because of certain, and being sandwiched in two pen cores between chuck promptly has the situation that is twisted off to take place.One this situation takes place, and disconnected core will be stranded between anterior chuck and the rear portion chuck and hinder sending of pen core thereafter; Or after disconnected core, desire is borrowed when sending core operation will breaking core to send forward, and staggering and can't join in the rear end of the disconnected core of the front end of back segment pen core and leading portion, so that the core that breaks can't be got rid of, and also can't normally send pen core.

Illustrate, connector and sleeve are as under the situation that is combined into one that is spirally connected mutually with screw thread, as the core that takes place to break stops up, desire is unloaded sleeve when removing down from connector, as long as will connect first rotation, the rear portion chuck is and then rotation also, and the result is by being twisted off between the pen core leading portion portion of anterior chuck clamping and the pen core back segment by rear portion chuck clamping.In addition, when the user reverses the pressure cap at shaft of a writing brush rear portion or erasing rubber unintentionally and keeps tube, the also and then rotation together of rear portion chuck of borrowing pen core tube to link to each other, by anterior chuck and rear portion chuck respectively the pen core leading portion and the back segment of clamping can produce relative reversing, and cause pen core to be twisted off equally.

Therefore, the purpose of this utility model provides a kind of double fastener hair style propelling pencil, though wherein being provided with rotation stop device can move axially chuck but does not rotate, make whereby that pen core is unlikely to be twisted off, and when pen core fractures and need unload precentrum, can make that inner body is unlikely to be scattered, the assembling of whole assembly is good simultaneously.

Moreover, of the present utility modelly advance a purpose, provide a kind of double collet propelling pencil, the invention that is disclosed in the special 7-289185 of Yuanping City number (applying for No. 84215034) that system had before filed an application at the applicant is improved, tying up to pressure cap is provided with tool O type circle and accommodates the locking protrusion that tank and several evaginations can be embedded in the slot of tail plug, to prevent that this preceding case is when shaking pencil, contact the metal sound of " card is rattled away; card is rattled away " of producing between hardware because of pressure cap and tail plug, simultaneously, also can remove when tail plug and pressure cap adopt the multiangular contact-making surface may bring pressing operation when reaching the spline effect and push the positive disappearance of pushing tension that caused because of pressure cap.

For achieving the above object, double collet propelling pencil of the present utility model is achieved in that the front portion is provided with the shaft of a writing brush of precentrum, slidably be located in the pen core tube in this shaft of a writing brush freely, be located at the rear chuck of pen core tube front end, trip is embedded in the chuck bunching ring of this rear chuck, be located at the anterior periphery of pen core tube and the inner sleeve of pen core tube being pushed to the rear elastic body at rear that is equipped with, be set in the outer and perisporium of this sleeve and be respectively equipped with the connector of the fastener that ends for sleeve and chuck bunching ring butt card, be fixed on the anterior chuck of this connector front end, be located between connector and the precentrum in order to connector is pushed to the anterior elastomer at rear, be installed in the tail plug of shaft of a writing brush rear end, reach the pressing member that releasably is set in the pen core tube rear end, and above-mentioned pressing member releasably is set in the pressure cap that the set erasing rubber in pen core tube rear end keeps tube, the peripheral part of this pressure cap is formed with engaging protrusion, and the inner peripheral surface of above-mentioned tail plug is formed with the axial engaging groove that can supply above-mentioned engaging protrusion engaging.

The realization of further purpose of the present utility model is the annular recess that the ring-type bead was surrounded about the peripheral part of above-mentioned pressure cap was made, groove is nested with an O type circle, and above-mentioned engaging protrusion be one be connected with below the outer peripheral face of ring-type bead be uniformly-spaced configuration.

Owing to adopt double fastener hair style propelling pencil structure of the present utility model, rotation stop device prevents that pen core from twisting off, the knockout up time not when taking place pen core to block, can unload precentrum etc. easily to get rid of disconnected pen core, and the anterior chuck of unlikely generation comes off lost, pen core is also unlikely to drop even anterior chuck opens, and simultaneously, its assembling is good.Moreover, be nested with an O type circle at the groove of pressure cap, can prevent noisemetallic.

Now as follows according to accompanying drawing with regard to the specific embodiment of the utility model detailed description:

Fig. 1 is expressed as the partial, longitudinal cross-sectional of the double fastener hair style propelling pencil of the utility model embodiment;

The front view of the resilient sleeve in Fig. 2 presentation graphs 1;

The vertical view of the resilient sleeve of Fig. 3 presentation graphs 2;

The front view of the connector in Fig. 4 presentation graphs 1;

Fig. 5 represents along the cutaway view of connector A-A ' line of Fig. 4;

Fig. 6 represents the partial sectional view of the double fastener hair style propelling pencil of the utility model embodiment;

Fig. 7 represents the cross-sectional figure that dissects along B-B ' line of Fig. 6;

The perspective view of the pressure cap of Fig. 8 presentation graphs 6;

The vertical view of the pressure cap of Fig. 9 presentation graphs 6;

The side view of the pressure cap of Figure 10 presentation graphs 6.

Be expressed as the partial, longitudinal cross-sectional of double fastener hair style propelling pencil according to Fig. 1, the front end of the shaft of a writing brush 1 is bolted with precentrum 2 among the figure, and the pen core tube 4 that the rear end releasably is arranged with pressure cap 3 is to be plugged in axially slidably in the shaft of a writing brush 1.The leading section of this pen core tube 4 is pressed into and is fixed with rear portion chuck 5, and the front end chuck portion travel of this rear portion chuck 5 is embedded with chuck bunching ring 6.

Again, the sleeve system that front end props up the rear end of bunching ring 6 adopts resilient sleeve 7, is provided with Rear springs 8 between the front end of this sleeve 7 and pen core tube 4.At this, resilient sleeve 7 adopts front ends to have elasticity (scalability) sleeve 7 of inward flange 7a, and 8 on spring can adopt various elastomers, and it is inboard and give assembly such as pen core tube 4 and often keep the elastic pressure that retreats that this spring 8 is installed in the bead 7a of sleeve 7.

Secondly specified with regard to the structure example of above-mentioned resilient sleeve 7 according to Fig. 2 and Fig. 3.Resilient sleeve 7 is by leading portion minor diameter part 7b, and back segment large-diameter portion 7c and the middle elastic portion 7d between the portion of large and small footpath constitute the buffering sleeve that integral body has the axial elasticity retractility.Elastic portion 7d offers as shown in Figures 2 and 3 to have along a plurality of strias hole 7e that circumferentially staggers alternately and can turn to flexible spring function in the middle of this, and the peripheral part at this elastic portion 7d is formed with a pair of relative locking protrusion 7f, can be clamped in the stop hole 9d of connector 9 described below.Again, locking protrusion 7f forms triangle as shown in Figure 2 in this example.

Moreover the outside that bullet must sleeve 7 is nested with as Fig. 4, tubular connector 9 shown in Figure 5, and the fastener structure of borrowing card mutually to end is combined as a whole.Specifically be, the front end of connector 9 is formed with miner diameter end 9a, and the rear of this miner diameter end 9a is provided with oblique shoulder 9b, and then is the 9c of intermediate cylinder portion, and rear portion is large-diameter portion 9d.Be equipped with a pair of stop hole 9e on the perisporium of this large-diameter portion 9d, and the rearward end on the same straight line of stop hole 9e be formed with the guiding port 9f that enlarges from inside to outside at this corresponding to above-mentioned locking protrusion 7f.This guiding port 9f act as when in the connector 9 that above-mentioned resilient sleeve 7 is packed into, its locking protrusion 7f is entered and snap in the stop hole 9e easily and locatees.If form continuous guide groove 9g in the inboard of guiding port 9f when shown in dotted line, then in the resilient sleeve 7 easier insertion connectors 9 and card fastening position.

Between the interior Zhou Suoshe ring-type shoulder of the front end of the miner diameter end 9a of connector 9 and precentrum 2, be provided with front springs 10 as shown in Figure 1, to give the elastic thrust that connector 9 moves backward.In this embodiment, a little less than the elasticity strength of the elasticity strength of front springs 10 than Rear springs 8.Again, the miner diameter end 9a front end of connector 9 is pressed into and is fixed with the anterior chuck 11 of pen core clamping.

This anterior chuck 11 is different through the structure of cutting apart the rear portion chuck of making toward extending out out after the formation multi-disc 5 with general front end, and just front end is divided into multi-disc and does not give expanding and open.This anterior chuck 11 has in the precentrum 2 of packing into and when state that it advances and only keeps that pen core is unlikely to drop, in case when pen core is under pressure then removable.The front end of the outstanding precentrum 2 of this anterior chuck 11 partly is formed with block bead 11a.

When anterior chuck 11 as shown in Figure 1 clamping to have under the state of pen core be to be outwards to open and from the outstanding state of precentrum 2, but not during the state of clamping pen core, can inwardly tighten up and be retracted in the precentrum 2 backward because of the center is empty anterior chuck 11, yet, but the anterior chuck 11 of set bead 11a block continues to retreat in the present case, therefore, when precentrum 2 was unloaded down, the anterior chuck 5 of can worrying about nothing dropped.

Again, anterior chuck 11 is installed in the precentrum 2, and pen core is unlikely to drop because chuck portion can maintain when advancing, but moves backward if pen core is subjected to load (pressure) Shi Zeke slightly; Again forwardly chuck 11 retreat have under the state that tightens up can be anti-lettering pen press and keep pen core not shrink back.Again, in Fig. 1, symbol 16 is the rubber control maintenance tube that is used for keeping erasing rubber that is located at pen core tube 4 rear ends described below.

When writing, push the pressure cap 3 of rear end earlier, then front springs 10 because of elasticity strength than Rear springs 8 a little less than, front springs 10 promptly is compressed earlier, so preceding chuck 11 advances and opens and be the state that can pass through from the rear for pen core.

Continue it, shoulder 2a in the inwall that the oblique shoulder 9b of connector 9 props up precentrum 2 is formed and no longer reach, then Rear springs 8 is compressed and rear portion chuck 5 is advanced with pen core tube 2.In rear portion chuck 5 advanced, chuck bunching ring 6 propped up the formed shoulder of connector 9 inwalls and does not readvance, but 5 of rear portion chucks can move on and open, and pen core can advance.Thereafter remove pressing force, rear portion chuck 5 is promptly borrowed the recuperability of Rear springs 10 and is got back to the origin-location, if, push pressure cap 3 once more, rear portion chuck 5 promptly advances once more, and with the state that keeps pen core follow connector 9 inner before so that pen core sent forward.

Pen core moves on and then can stretch out for writing by anterior chuck 11 and from its front end.When pen core consumes because of writing, can push pressure cap 3 once more pen core is quantitatively stretched out again.And when the pen core total length shortens because of consumption, but same the pushing of repetitiousness to send the new pen core in the pen core tube 4, the front end of new pen core can be released the residual disconnected pen core that consumes and continue to write.

Stretch out when long from anterior chuck 11 if pen core is sent too many, can push pressure cap 3 earlier and make after chuck opens slightly, the pen core front end is pushed toward in, pen core can be got back to suitable length, regulates pen core whereby and fractures to prevent that pen core is long.

Again, as during situations such as obstruction, can with precentrum 2 after the shaft of a writing brush 1 front end spins down, being got rid of just in case take place that pen core fractures.Both are combined as a whole because resilient sleeve 7 is borrowed in the stop hole 9e that locking protrusion 7f is fastened on connector 9 and can not rotate relatively, when rotating resilient sleeve 7 unintentionally, resilient sleeve 7 can not rotate yet, therefore, if front and rear part chuck 5,11 when just in time clamping has same Zhi Bixin, also is unlikely pen core and is twisted off.If, must be when connector 9 be unloaded down with resilient sleeve 7, break away from stop hole 9e and pull out backward as long as a pair of locking protrusion 7f of resilient sleeve 7 is pressed into to make toward radially inner side.

Below, Fig. 6 to Figure 10 then represents the relative configurations figure of press section, rear end of the double fastener hair style propelling pencil of the utility model the foregoing description.In this embodiment, represent the rotation preventive mechanism of pressure cap portion especially, be used for preventing that just in case the user rotates the pressure cap of pressing member by mistake, its rotation of energy block is in order to avoid twist off pen core.

In other words, Fig. 6 to Figure 10 is the improvement at the rotation preventive mechanism of creation shown in the special 7-289185 of Yuanping City number in the applicant application, and having tail plug and pressure cap according to this improvement than preceding case is that lock structure with polygonal portion tabling has more remarkable result.The large-diameter portion internal perisporium on tail plug 15 tops is formed with six roads at interval with pen and axially can closes groove 15f shown in the cutaway view of Fig. 7, and on the other hand, pressure cap 17 is releasably to be embedded in this tail plug 15 inside.

This pressure cap 17 is formed with top domed head, and foot's periphery of inserting the lower end in the tail plug 15 has upper flange 17f and the lower flange 17g that is parallel, then forms the ring-type groove between two beads one.Be formed with three engaging protrusion 17gg of the 120 degree spacings of being separated by around the lower flange 17g, when pressure cap 17 inserted in the tail plug 15, the inwall that these engaging protrusion 17gg just can be embedded in tail plug 15 formed six three of engaging among the groove 15f.

So pressure cap 17 can endwisely slip freely for tail plug 15, but circumferential rotation is then ended by card, therefore, the rotation of rear portion chuck 5 (see figure 1)s of being fixed in pen core tube 4 front ends is locked equally, and the pencil-lead that is held on anterior chuck 11 and rear portion chuck 5 does not jointly have the worry that is twisted off yet.

And for example shown in Figure 6, formed annular recess internal beam has elasticity O type circles 18 such as rubber between upper and lower bead 17f, the 17g of pressure cap 17, because the existence of this O type circle 18, make the pressure cap 17 that inserts in the tail plug 15 can be embedded in tail plug 15 inside really, and do not exist in having play between the two, therefore, even shake propelling pencil, can not produce yet member collide sound metallic sound.In addition, 19 among Fig. 6 is formed as one the metal clamp ring in the erasing rubber bottom.

Again, in the above-described embodiments, though the axial engaging groove 15f of tail plug 15 has six roads, but be not restricted to this number, as long as can cooperate quantity and the angle of the engaging protrusion 17gg of pressure cap 17, and set more or less number also can, only this engaging groove 15 the more, in the time of will packing in the tail plug 15 to pressure cap 17, can consider the directionality of engaging protrusion 17gg and pack into easily.

Again, in the above-described embodiments, engaging protrusion 17gg only is located on the lower flange 17g, thus be located on the upper flange 17f, or upper and lower part bead 17f, 17g all establish engaging protrusion 17gg, and can certainly.

This creation is because of having aforementioned formation and effect, in the structure of propelling pencil with double collet, between pressing member and tail plug, be provided with rotation preventive mechanism, thereby, be unlikely in the use because of these members are rotated related one of them chuck unintentionally and rotate, the situation that causes the pen core that is held between forward and backward chuck to be twisted off then takes place, so make the double collet propelling pencil more can bring into play the effect that it reduces the waste of pen core and improves its use operability.

Claims (2)

1. double fastener hair style propelling pencil, the front portion is provided with the shaft of a writing brush of precentrum, slidably be located in the pen core tube in this shaft of a writing brush freely, be located at the rear chuck of pen core tube front end, trip is embedded in the chuck bunching ring of this rear chuck, be located at the anterior periphery of pen core tube and the inner sleeve of pen core tube being pushed to the rear elastic body at rear that is equipped with, be set in the outer and perisporium of this sleeve and be respectively equipped with the connector of the fastener that ends for sleeve and chuck bunching ring butt card, be fixed on the anterior chuck of this connector front end, be located between connector and the precentrum in order to connector is pushed to the anterior elastomer at rear, be installed in the tail plug of shaft of a writing brush rear end, reach the pressing member that releasably is set in the pen core tube rear end and constitute; Wherein pressing member is provided with and can moves axially but the rotation preventive mechanism that can not rotate the tail plug; It is characterized in that the erasing rubber that this pressing member system releasably is set in the pen core tube rear end keeps the pressure cap of tube, the peripheral part of this pressure cap is formed with engaging protrusion, and the inner peripheral surface of above-mentioned tail plug is formed with the axial cartridge groove for above-mentioned engaging protrusion engaging.

2. double fastener hair style propelling pencil according to claim 1, it is characterized in that, set engaging protrusion is at least one side who is formed on a pair of bead that keeps the interval and establish on the pressure cap, and is embedded with elasticity O type circle between this is to bead in the formed ring-type chase again.

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