CN2305294Y

CN2305294Y - Lateral pushing mechanical pencil

Info

Publication number: CN2305294Y
Application number: CN 97209876
Authority: CN
Inventors: 阴山秀平; 野口芳男
Original assignee: Kotobuki and Co Ltd
Current assignee: Kotobuki and Co Ltd
Priority date: 1996-10-31
Filing date: 1997-03-26
Publication date: 1999-01-27
Anticipated expiration: 2007-03-26

Abstract

The utility model relates to a side pressure type propelling pencil. Under a condition that the diameter of a shaft barrel is not increased, bigger pressure stroke can be obtained for improving pressure performance. The utility model is composed of a pressure member which is arranged on one side wall of the shaft barrel and a sliding member which is corresponding to the pressure member and is arranged in the shaft barrel. The sliding member can be slid along a length direction. The inner part of the sliding member is provided with a pencil lead passageway. A declining part which is arranged on a middle part of the sliding member is respectively made into a high and a low slope parts by a shoulder part. A cylindrical part which is butted with the pressure member and is arranged on the sliding member is corresponding to the shaft barrel and is made into an eccentric shape towards the distant side of the pressure member.

Description

A kind of side-knock mechanical pencil

The set pressing member of beam barrel side-walls is operated about a kind of by the utility model system, and sliding part is slided along its length, to send the side-knock mechanical pencil of pen core.

This type of common side-knock mechanical pencil has had all introductions in the past, the propelling pencil of the real public clear 51-17942 communique of Japan for example shown in Figure 8, this is formation can grip the pressing lever of adorning 22 of its beam barrel that is provided with chuck mechanism 20 on one side in side opening 21 a periphery, with finger push this pressing lever and send the propelling pencil of pen core on one side.

Promptly, by the action of pushing this pressing lever 22, so that its Actuator Division 22a is connected to the inclined plane part 24a of sliding part set on the Middle shaft assembly 23 24, force Middle shaft assembly 23 resisting forwards moving along the internal face of beam barrel 20 of spring 25 to rear pushing pressure, open and send the propelling pencil of pen core to make chuck 26.

Yet this type of known side knock mechanical pencil and rear end push type propelling pencil are by contrast, because of being subjected to the restriction of the diameter of beam barrel 20, cause it to send core length under once pushing, that is the so-called stroke of pushing become very short, especially when sending core at first, must push and repeatedly feel trouble very much.Moreover, if increase when pushing stroke reluctantly, then there are the diameter that must excessively increase beam barrel 20 and the pressing position when pushing more to move to central lower, and the problem that makes push action become very heavy.

Therefore, the purpose of this utility model is to make side-knock mechanical pencil in the beam barrel of restricted diameter, to obtain the bigger stroke of pushing under the situation that does not increase the beam barrel diameter, promotes the pressing operation performance whereby.

Even another purpose of the present utility model is to make the more side of known part number to be reduced by the part number of formula mechanism, and make the tube of packing into of dsah-pot etc. single, thereby provide a kind of assembling work to be easy to cheap propelling pencil.

By side-knock mechanical pencil of the present utility model, be by:

One is located at the pressing member of shaft side wall, and this pressing member of correspondence and the sliding part that is provided with the pen core path in inside that can slide along its length be located in the beam barrel constitutes, and it is characterized in that:

Set Jie of rake system of the pars intermedia of above-mentioned sliding part is formed with high and low inclined plane part respectively with shoulder, at the pressing operation initial stage, this front end system that is located at the pressing member of shaft side wall is connected to above-mentioned low inclined plane part, and in the pressing operation later stage, the inboard of this pressing member system is connected to the side-knock mechanical pencil of above-mentioned high inclined plane part.

Moreover, because of the utility model side-knock mechanical pencil system by: one is located at the pressing member of shaft side wall, and this pressing member of correspondence and be located at beam barrel in can slide along its length and the inner sliding part that is provided with the pen core path constitutes, the cylindrical portion of the butt pressing member of this sliding part is that this beam barrel formation is eccentric shape to pressing member away from side.

Even, by side-knock mechanical pencil of the present utility model, sliding part system constitute one with side by the rake, of mechanism's butt be located at rake rear and beam barrel internal diameter ask to join one greatly the footpath be subjected to core, and a perforation this be subjected to core and this rake be formed with the solid memder of the pen core path of extension along axis, and the front portion of this sliding part is formed with a shoulder, with when the stop hole of shaft side wall engages, the locking protrusion system of sleeve borrows pushing of above-mentioned shoulder and can be limited in this stop hole at the locking protrusion of sleeve.

Fig. 1 is the longitudinal section of the embodiment of the utility model side-knock mechanical pencil.

Fig. 2 shows the perspective view of the pressing member of Fig. 1.

Fig. 3 shows the perspective view of the sliding part of Fig. 1.

Fig. 4 shows the perspective view of the buffering sleeve of Fig. 1.

Fig. 5 shows that the pressing member of Fig. 1 and the relation between sliding part are and wants portion's cutaway view when not pushing.

Fig. 6 shows that the pressing member of Fig. 1 and the relation between sliding part are and wants portion's cutaway view in pushing.

Fig. 7 shows and wants portion's cutaway view when the pressing member of Fig. 1 and the relation between sliding part are maximum and push.

Fig. 8 is the part longitudinal section of known side-knock mechanical pencil.

Below being adjoint describes it in detail with regard to the embodiment of routine knock mechanical pencil of the present utility model.As shown in Figure 1, front portion in beam barrel 1 is provided with side by mechanism, that is, both sides as shown in Figure 2 are formed with the pressing member 3 of the outstanding foot of bar shaped, be Jie with its rear end grooving 3a the moving areole position (with reference to Fig. 5 to 7) of being located at this beam barrel that is formed with front-end element 21 of propping up freely of pivot.

And in beam barrel 1, be provided with can slide along its length freely and sliding parts 4 these pressing member 3 front end 3b butts, in detail, can understand that this sliding part 4 is made of the 4a of placket portion, the 4b of intermediate cylinder portion and the back tube 4c of portion with reference to Fig. 3.

Moreover, the 4a of this placket portion forms than minor diameter, the 4b of intermediate cylinder portion then forms than major diameter, satisfy and between 4a of placket portion and the 4b of intermediate cylinder portion, form a shoulder 4ab, again, because of the 4a of placket portion and the 4b of intermediate cylinder portion system and beam barrel 1 concentric, then the 4c of tube portion then be comply with hereinafter the technology that will state and form to pressing member away from the lateral deviation heart.

Between preceding intermediate cylinder 4b of portion and the back tube 4c of portion, be formed with the rake 4d that bears these pressing member 3 starts again.This rake 4d makes sliding part 4 move forward for butt this pressing member 3 front end 3b, forms an inclined plane shape that descends to the back lower place then.And this rake 4d system is made of the high central inclined plane part 42d that a pair of butt respectively, the low outside inclined plane part 41d and that guides two 3c of foot of this pressing member 3 are surrounded by the facial 41d of skew back in addition.

Rearward end in the above-mentioned back tube 4c of portion is formed with the funnelform core 4e that is subjected to that an external diameter is slightly smaller than beam barrel 1 internal diameter, and in this be subjected to the eccentric position of core 4e be formed with one and this sliding part 4 in the oval-shaped opening 4f that continues of pen core path 4h (with reference to Fig. 1).Be formed with an engaging ditch 4g who is directed sliding with the engaging rib 1a (shown in the dotted line among Fig. 3) engaging of the length direction that forms in the beam barrel 1 along its length in the outside of sliding part 4 again.

Even, being pressed in the 4a of placket portion of sliding part 4 and being fixed with a chuck 5, these chuck 5 outer side-line trips are embedded with a chuck bunching ring 6, are provided with a buffering sleeve 7 that is limited in the beam barrel 1 in this chuck 5 and chuck bunching ring 6 outsides in addition.

This buffering sleeve 7 is made of tube body 7a and the 7b of spring portion, and the 7b of spring portion is provided with a pair of locking protrusion 7c towards foreign side.This locking protrusion 7c can be limited in the stop hole 1b of beam barrel 1 when in the beam barrel 1 of packing into.

The anterior inner peripheral surface of above-mentioned buffering sleeve 7 is to be formed with the prominent bar 7d (as shown in Figure 1) of ring-type, is to be equiped with spring 8 between prominent bar 7d of this ring-type and the sliding part 4, a flexible back is arranged to pushing force and can give sliding part 4.

Front-end element 2 inside of establishing in beam barrel 1 anterior one in addition are provided with one in order to keeping the slidably knockout saddle 9 of pen core, and the rear end internal fixation of this knockout saddle 9 has the friction member 9a just like rubber etc.In addition, 10 grip sleeve of symbol among the figure for the manufacturing of the elastomeric material on the grip part that is installed on beam barrel 1.

The rearward end of this beam barrel 1 forms thinner wall section 1c, the pen clip 11a that this thinner wall section 1c is equipped with an erasing rubber bearing 11 and is integrally formed.And be formed with in this erasing rubber bearing 11 and can be formed with in the eccentric position of this erasing rubber maintaining part 11b in addition and replenish the peristome 11bb that pen core is used for erasing rubber 12 loading and unloading erasing rubber maintaining part 11b freely.

Below, more understand feature of the present utility model for making, the assembling with regard to the foregoing description tool now illustrates in regular turn.At first, the rear port of sliding part 4 from the beam barrel 1 that is provided with front-end element 2 inserted, the inferior chuck mechanism that will comprise is pressed into from the rear port of beam barrel 1 with the assembly of sliding part 4, again, because of being formed with a shoulder 4ab between the 4a of placket portion of sliding part 4 and the 4b of intermediate cylinder portion, therefore, when assembling, this shoulder 4ab is that butt is guided the locking protrusion 7c of this buffering sleeve 7 and the 7b of spring portion is forced extrusion, does not have deflection deformation then, and locking protrusion 7c positively is placed in the stop hole 1b of beam barrel 1 easily.

Moreover, the rear end grooving 3a of this pressing member 3 is limited to beam barrel 1 the side window mouth one ora terminalis and be placed in the side-walls of beam barrel 1, then, just can be from the rear port of beam barrel 1 pen core of packing into, subsequently, the erasing rubber bearing 11 that is provided with pen clip 11a is embedded in the thinner wall section 1c place of the rearward end of beam barrel 1, at this moment, in the maintaining part 11b of the erasing rubber bearing 11 of can in advance erasing rubber 12 being packed into, or reinstall erasing rubber later on and also can.

Again, grip sleeve 10 also can be nested on the beam barrel 1 in advance, is placed in really in the stop hole 1b of beam barrel 1 in order finally to confirm the locking protrusion 7c that cushions sleeve 7, and that is suitable for assembly project last carries out the assembling of grip sleeve 10 again.

Below, then the action situation with the side-knock mechanical pencil of above-mentioned formation describes according to Fig. 5 to Fig. 7.Fig. 5 shows that being of relation of 4 of pressing member 3 and sliding parts want portion's cutaway view when not pushing, among the figure, two 3c of foot of pressing member 3 are connected to the facial 41d of skew back outside the rake 4d of sliding part 4, and in this occasion, sliding part 4 is urged to the last location of beam barrel 1 by spring 8 elasticity.

Secondly, Fig. 6 shows that the relation of 4 of pressing member 3 and sliding parts is and wants portion's cutaway view in pushing, among the figure, pressing member 3 is pushed, and two 3c of foot that make pressing member 3 give as security the outside inclined plane part 41d of the rake 4d of sliding part 4 down, simultaneously, force sliding part 4 to advance in beam barrel 1, the result also makes chuck 5 advance.

Fig. 7 shows and wants portion's cutaway view when the relation of 4 of pressing member 3 and sliding parts is maximum and pushes, among the figure, when pressing member 3 is more deeply pressed to the axle center of beam barrel 1, the inboard of two 3c of foot of pressing member 3 is connected to the central inclined plane part 42d of sliding part 4, and force pressing member 3 further to advance, therefore, when having only an inclined plane part person to compare with rake 4d, rake 4d then of the present utility model can have the advantage that increases stroke.Again, the back tube 4c of portion of sliding part 4 for beam barrel 1 be to pressing member 3 away from the lateral deviation heart, the advantage of pushing the more capable increase of stroke that makes pressing member 3 is arranged then.

Moreover, when replenishing pen core, erasing rubber 12 is pulled up, again the peristome 11bb of pen core from erasing rubber maintaining part 11 inserted, so pen core is the funnelform core 4e that is subjected in the sliding part 4 that arrives by side in the rear portion of beam barrel 1, and pen core arrives in the chuck 5 via the pen core path 4h in the sliding part 4 from its opening 4f.Therefore, replenishing of pen core is very easy, can all be used as the pen core tube because of the rear portion of beam barrel 1 in addition and use, and the advantage that can accommodate how standby pen core is arranged then.

Again when the assembling internal mechanism, when the locking protrusion 7c with plastic buffering sleeve 7 is placed in the stop hole 1b of beam barrel 1, the 7b of spring portion of known buffering sleeve 7 then has deflection deformation and the problem that is difficult to assemble, thereby is to use tool in assembling in the past.Yet because of being formed with a shoulder 4ab between the 4a of placket portion of the utility model sliding part 4 and the 4b of intermediate cylinder portion, when assembling, this shoulder 4ab butt is guided the locking protrusion 7c of this buffering sleeve 7, and the 7b of spring portion does not have the problem of deflection, and the advantage of easy holding is arranged then.

The back tube 4c of portion of above-mentioned sliding part 4 then need not consider directionality, and after packing into, also need not make sliding part 4 must keep not rotating because of be eccentric event for beam barrel 1 when sliding part 4 is packed beam barrel 1 into.Again, because of beam barrel 1 of the present utility model is formed with engaging rib 1a, and the sliding part 4 of other party is formed with engaging ditch 4g (with reference to Fig. 3), can positively determine its position easily then.

Moreover in Fig. 5 to Fig. 7, symbol 1d is the block shoulder with the rake 4d front butt of sliding part 4.The position of this block shoulder 1d is by with the relation of the stroke of knockout saddle 9 and determine, promptly, in operation, knockout saddle 9 be connected to front-end element 2 front inner wall and after stopping, the front butt block shoulder 1d of rake 4d and the position that stops must be formed with sufficient interval.

The utility model for pushing the difficult side-knock mechanical pencil that increases of stroke, can in the beam barrel of restricted diameter, obtain the bigger stroke of pushing because of being as above-mentioned formation under the situation that does not increase the beam barrel diameter, promote pressing operation whereby.

Even this creation can make the more side of known part number be reduced by the part number of formula mechanism, and make the tube of packing into of dsah-pot etc. single, thereby provide a kind of assembling work to be easy to a cheap tool goods.

Claims

1. side-knock mechanical pencil, be by: one is located at the pressing member of shaft side wall, and this pressing member of correspondence and the sliding part that is provided with the pen core path in inside that can slide along its length be located in the beam barrel constitutes;

It is characterized in that:

Set Jie of rake system of the pars intermedia of this sliding part is formed with high and low inclined plane part respectively with shoulder, at the pressing operation initial stage, this front end of being located at the pressing member of shaft side wall is connected to above-mentioned low inclined plane part, and in the pressing operation later stage, the inboard of this pressing member is connected to above-mentioned high inclined plane part.

2. according to the described a kind of side-knock mechanical pencil of claim 1,

It is characterized in that:

This sliding part and the cylindrical portion pressing member butt for beam barrel system to pressing member away from the lateral deviation heart.

3. according to the described a kind of side-knock mechanical pencil of claim 2, it is characterized in that the rearward end of cylindrical portion forms the approximately external diameter identical with the beam barrel internal diameter.

4. according to the described a kind of side-knock mechanical pencil of claim 1, it is characterized in that, its sliding part system have one with side by the rake, of mechanism's butt be located at rake rear and its beam barrel internal diameter ask to join one greatly the footpath be subjected to core, and a perforation this be subjected to being formed with the pen core path of extension and being solid memder of core and rake along axis, and the front portion of this sliding part is formed with a shoulder, with when the stop hole of shaft side wall engages, the locking protrusion system of sleeve borrows pushing of above-mentioned shoulder and can be limited in this stop hole at the locking protrusion of sleeve.

5. according to any one described side-knock mechanical pencil in the claim 1 to 4, it is characterized in that the core that is subjected to of this sliding part forms funnel-form, and this be formed with by core can be to the opening of the off-centre of the pen core path of sliding part.

6. according to any one described side-knock mechanical pencil in the claim 1 to 4, it is characterized in that this sliding part is formed with engaging ditch along its length, and be formed with the engaging rib that can engage the ditch engaging with this in beam barrel.