CN101166634A - Shaft tube of writing implement having holding auxiliary device - Google Patents

Abstract

A shaft tube of a writing implement capable of sufficiently providing a writing load by a rather small holding force by stably supporting the writing implement without being affected by the way of gripping and the grip strength of a user, and also having excellent portability and easiness in handling. The shaft tube is characterized by comprising an auxiliary device having an inter-finger contact pattern formed at the longitudinal intermediate part of the shaft tube so as to be stored in the shaft tube and a holding part formed forward of the inter-finger contact pattern.

Description

The beam barrel that possesses the writing implement that keeps auxiliary member

Technical field

The present invention relates to the beam barrel of writing implement, particularly have the beam barrel of writing implement that to control the maintenance auxiliary member of writing implement with more weak power.

Background technology

With keeping auxiliary member, various structures have been proposed as existing writing implement.For example, following structure is arranged, promptly by in writing implement, on part, adding groove or using rubber etc. to realize good controlling property as the material of this part by user's finger (for example thumb, forefinger and middle finger) clamping.In addition, also have to prepare with the shoestring of the rubber of writing implement split etc. and be inserted into the structure of the raising that realizes its controlling property in the grip portion.But in these motions, the form of controlling writing implement all only depends on 3 fingers of thumb, forefinger and middle finger the most basically, thereby the pen when writing presses the mode that applies to be confined to via these 3 modes that finger carries out.

And, under the situation of above-mentioned writing implement with the maintenance auxiliary member, in stable the controlling property of writing implement, have problems, especially for the situation that requires to write for a long time or in wrist or the interim inconvenience of finger or have disabled user and require not bring fatigue and keep the countermeasure of the situation of writing implement not consider that fully room for improvement is arranged with more weak hold.

As the technology of improving this problem, the alleviating of fatigue of the finger that relates to handle part, the motion of skid resistance have also been carried out considering.For example there is the spy to open disclosed structure in the flat 5-177979 communique (writing implement is with keeping auxiliary member).This is configured to: the beam barrel pars intermedia at writing implement is installed ring body, and side keeps being formed on annulus on the end of tabular maintenance body with loose chimerism thereon, palm is connected on the tabular maintenance body, press keeping body to apply pen by palm, this pressure passes to the beam barrel of writing implement via above-mentioned annulus and above-mentioned ring body.

But, the support that can enough palms keeps is installed on beam barrel is and be used for using as alleviating by the mechanism of the power of 3 supportings of thumb, forefinger, middle finger, if support is insufficient to the butt of palm, then be difficult to reach this purpose.In addition, when controlling, the problem that exists the directionality hold beam barrel to be set forcibly.

Patent documentation 1: the spy opens flat 5-177979 communique

Summary of the invention

The objective of the invention is to eliminate above-mentioned conventional art defective, provide a kind of with less hold stably and can keep beam barrel gripping state, that possess the writing implement of the new maintenance auxiliary member after the improvement constantly.

According to the 1st technical scheme of the present invention, it is a kind of beam barrel with writing implement of auxiliary member, on the beam barrel of writing implement, form at the pars intermedia of the length direction of beam barrel and to refer to a butt handle, referring to that than this forward quadrate part of butt handle is provided with handle part, and butt handle between above-mentioned finger is configured to and can takes in respect to beam barrel.

By this structure, not influenced by user's gripping mode and grip and stably support writing implement, therefore, also can obtain writing load fully, and can make Portability, operability also good by smaller hold.

According to the 2nd technical scheme of the present invention, be a kind of beam barrel with writing implement of auxiliary member, in above-mentioned the 1st technical scheme, the butt handle is configured to can move with respect to the length direction of beam barrel/fix between above-mentioned finger.

According to the 3rd technical scheme of the present invention, be a kind of beam barrel with writing implement of auxiliary member, in the above-mentioned the 1st or the 2nd technical scheme, to be set to the vertical line with the axle center quadrature of the length direction of beam barrel be that rotation rotates freely to the butt handle between above-mentioned finger.

According to the 4th technical scheme of the present invention, be a kind of beam barrel with writing implement of auxiliary member, be configured to can be with respect to the axle center of the length direction of beam barrel with fixed angle arbitrarily for the butt handle between above-mentioned finger.

According to the 5th technical scheme of the present invention, be a kind of beam barrel with writing implement of auxiliary member, making butt handle between above-mentioned finger is below above 90 degree of 30 degree with respect to the angle in the axle center of the length direction of beam barrel.

According to the 6th technical scheme of the present invention, be a kind of beam barrel with writing implement of auxiliary member, the butt handle is configured to and can rotates with respect to the axle center of length direction is relative with beam barrel (particularly handle part) between above-mentioned finger.

According to this structure, the directionality of the paper abutting part of writing tip can be changed into the direction of expectation, can change the finger face butt position of writing of wearing and tearing owing to writing with core.

According to the 7th technical scheme of the present invention, be a kind of beam barrel with writing implement of auxiliary member, apply rotational resistance for butt handle between above-mentioned finger with the relative rotation of beam barrel.

According to the 8th technical scheme of the present invention, be a kind of beam barrel with writing implement of auxiliary member, above-mentioned rotational resistance is changed corresponding to writing pressure.

According to the 9th technical scheme of the present invention, be a kind of beam barrel, to above-mentioned handle part or refer to that at least one of butt handle gives skid resistance with writing implement of auxiliary member.

According to another technical scheme of the present invention, it is a kind of beam barrel with writing implement of auxiliary member, the following formation of described auxiliary member: in the beam barrel of writing implement, form at the pars intermedia of the length direction of beam barrel and to refer to a butt handle, referring to that than this forward quadrate part of butt handle is provided with handle part, and the butt handle is configured to and can takes in respect to beam barrel between above-mentioned finger, this take in be refer between the butt handle to be set to the vertical line with the axle center quadrature of the length direction of beam barrel be that rotation rotates freely, and the butt handle is configured to can move with respect to the length direction of beam barrel/fix between will referring to.

Description of drawings

Fig. 1 is the outside drawing of facing of the 1st embodiment of the present invention.

Fig. 2 is the longitudinal section of Fig. 1.

Fig. 3 is the stereoscopic figure of shell portion of the present invention.

Fig. 4 be the expression closed condition that refers to an abutting part face outside drawing.

Fig. 5 be changed refer between abutting part start point state face outside drawing.

Fig. 6 is that the A of Fig. 5 is to view.

Fig. 7 be represented further to change refer between abutting part start point state face outside drawing.

Fig. 8 is that the A of Fig. 7 is to view.

Fig. 9 is the reference diagram of the problem of expression when forming the tipped tool of writing implement front end.

Figure 10 is the outside drawing of facing of the 2nd embodiment of the present invention.

Figure 11 is the stereogram of variation of abutting part between the finger of expression the 2nd embodiment.

Figure 12 is the stereogram of expression the 3rd embodiment of the present invention.

Figure 13 is meant the assembling stereogram of an abutting part and cylindrical shell.

Figure 14 is the front view that expression refers to the final going-back position of the deployed condition of an abutting part and cylindrical shell.

Figure 15 is the cutaway view of cutting open along the A-A line of Figure 14.

Figure 16 is the key diagram that the state of writing implement is being controlled in expression.

Figure 17 be the expression writing implement handle part face outside drawing.

Figure 18 is that the portion's vertical profile of wanting of Figure 17 is looked enlarged drawing.

Figure 19 is the outside drawing of facing of another embodiment of expression.

Figure 20 be expression Figure 19 deployed condition face outside drawing.

Figure 21 is the parts expanded view of structure shown in Figure 20.

Figure 22 is the outside drawing of facing of the another embodiment of expression.

Figure 23 be expression embodiment shown in Figure 22 deployed condition face outside drawing.

Figure 24 is the parts expanded view of structure shown in Figure 22.

Figure 25 is the outside drawing of facing of the expression progressive position that refers to the deployed condition of an abutting part and cylindrical shell.

Figure 26 is that expression refers to the deployed condition of an abutting part and the outside drawing of facing of giving up the throne at last and putting of cylindrical shell.

Figure 27 is the longitudinal section of Figure 26.

Figure 28 is the outside drawing of facing of the another embodiment of expression.

Figure 29 is the longitudinal section of Figure 28.

Figure 30 be the expression closed condition that refers to an abutting part face outside drawing.

Figure 31 is that expression refers to the deployed condition of an abutting part and the outside drawing of facing of giving up the throne at last and putting of cylindrical shell.

Figure 32 is the outside drawing of facing of the another embodiment of expression.

Figure 33 is the longitudinal section of Figure 32.

Figure 34 is the outside drawing of facing of the another embodiment of expression.

Figure 35 is the longitudinal section of Figure 34.

Figure 36 is the outside drawing of facing of expression another embodiment of the present invention.

Figure 37 is the longitudinal section of Figure 36.

Figure 38 be represent and another embodiment face outside drawing.

Figure 39 is the longitudinal section of Figure 38.

Figure 40 is the figure that is illustrated in the model (sample) that uses in the experiment.

Figure 41 is the figure that compares between the level of expression standardization EMG.

Figure 42 is the figure that is expressed as the average preference degree of each sample relatively.

Figure 43 is the figure of the average preference degree of each sample between the expression men and women.

Figure 44 is the longitudinal section of the 1st example of rotating mechanism that is illustrated in the beam barrel of the writing implement with auxiliary member of the present invention, is built-in with the structure of propelling pencil.

Figure 45 is the partial enlarged drawing of Figure 44.

Figure 46 is the cutaway view of cutting open along the A-A line of Figure 44.

Figure 47 and Figure 44 are same, are that expression makes propelling pencil portion retreat/be received into the longitudinal section of the state in the beam barrel.

Figure 48 is the enlarged drawing with the part of representing with circle among Figure 47.

Figure 49 is the in-built cutaway view of expression propelling pencil point.

Figure 50 is the figure of the variation of expression Figure 49.

Figure 51 is the figure of the relation of expression clamping element (axis) and middle screw thread (Middle shaft assembly) and core.

Figure 52 is the stereogram of the structure of screw thread in the expression.

Figure 53 is the stereogram of the rotation resin shown in Figure 51.

Figure 54 be configured in core delivering mechanism in the beam barrel and ball pen with refill, with respect to the outside drawing of the 2nd example of the rotating mechanism of beam barrel.

Figure 55 is the partial enlarged drawing of Figure 54.

Figure 56 is the longitudinal section of Figure 54.

Figure 57 is the cutaway view that the part of Figure 56 is amplified.

Figure 58 is the stereogram of the elastomeric element shown in Figure 57.

Figure 59 is the stereogram of the packing ring shown in Figure 57.

Figure 60 is the stereogram as the saucerspring of elastomeric element use.

Figure 61 is the figure of state of the kink elongation of the expression saucerspring that makes Figure 60.

Figure 62 be configured in core delivering mechanism in the beam barrel and ball pen with refill, with respect to the outside drawing of the 3rd example of the rotating mechanism of beam barrel.

Figure 63 is the partial enlarged drawing of Figure 62.

Figure 64 is the cutaway view of Figure 63.

Figure 65 is the stereogram of expression beam barrel.

Figure 66 is the stereogram of the axis of expression front axle.

Figure 67 is that expression replaces tip member 92 shown in Figure 44 and adopts the longitudinal section of the variation of guiding tube that can strain.

Figure 68 is the stereogram that the part of the holding member of Figure 67 is cut open.

Figure 69 is the stereogram of state that the part of the holding member of Figure 68 is cut open.

Label declaration

1 beam barrel

14 cylindrical shells

Butt handle between 17 fingers

18 angular adjustment parts

34 pushing portions

37 handle parts

The specific embodiment

For the 1st embodiment of the present invention, describe with reference to Fig. 1～Fig. 8.Top among the figure is called the rear, the below is called the place ahead.In the inside of beam barrel 1, take in/dispose the core delivering mechanism of propelling pencil or the refill of ball pen etc.In the inside of this routine beam barrel 1, be built-in with the refill 2 of ball pen, in addition, beam barrel 1 possess carry out stretching out of this refill 2 regain the spinner member 3 of action and sliding members 4, with respect to axis direction guide the cam path 5 of these spinner members 3 and sliding members 4, by hitting portion 6 and to the elastomeric element 7 towards the helical spring of the rear application of force etc. such as these spinner members 3 and refill 2.That is, be the ball pen that stretches out retractably.By by 7 pairs of above-mentioned refills 2 of spring application of force rearward, keep the receiving state of this refill 2.Here, if pushing be installed in above-mentioned sliding members 4 the rear by hitting portion 6, sliding members 4 pushing spinner members 3 then, spinner member 3 is fastened on the place ahead of cam path 5, the nib 2a of refill 2 stretches out from tipped tool 8.This tipped tool 8 is installed on the beam barrel 1 via axis described later.In addition, label 9 is elastomeric elements of helical spring etc., to above-mentioned by hitting portion 6 and sliding members 4 towards the rear application of force.Above-mentioned tipped tool 8 can be formed by metal material, but is formed by the resin material in this example, also can implement coating and handle (coating 10) and form the dope layer that is coated with coating etc. on the surface of this resinous tipped tool 8.But, because on bight 8a, 8b that the coating processing can make electric current concentrate on to be formed on the tipped tool 8,8c, the 8d, coating (metal) concentrates on this bight 8a, 8b, 8c, 8d place as a result, these protrusions 10a～10d because of making this part, concentrating of this metal forms (protrusion 10a, 10b, 10c, 10d) than heavy back, owing to can make the internal diameter that stretches out the hole of above-mentioned tipped tool 8 become incorrect (with reference to Fig. 9) partly with the state of protuberance.But, in this example, be fitted with the tip member 12 that constitutes by the resin material in the front end inboard of tipped tool 8.That is, clip the coating 10 that comprises above-mentioned protrusion 10a～10d by tipped tool 8 and tip member 12.And, utilize the strain effect etc. of this tip member 12 to absorb the thickness (protuberance amount) of above-mentioned protrusion 10a～10d.

In addition, on above-mentioned tip member 12, do not implement coating and handle (coating 10), guaranteed the correct internal diameter that stretches out hole 12a.This tip member 12 is shaped by injection molding, but also can form by the method for machining or Punching Technology etc.But if if in the situation of not implementing above-mentioned coating 10 or can correctly implement the situation of coating or also not need aesthetic appearance with uniform state, above-mentioned tip member 12 might not need.

In addition, the tip 13 of above-mentioned ball-point pen refill 2 is positioned at the inboard of this tip member 12, is guided in the inboard of this tip member 12.That is,, writing Shi Buhui generation vibration etc. and can access the good thoughts and feelings of writing by inner surface guiding tip 13 by tip member 12.

Dispose cylindrical shell 14 in above-mentioned beam barrel 1, this cylindrical shell 14 can seesaw with respect to the axle center of the length direction of this beam barrel 1 but can not rotate.That is, by the planar portions on the opposed side that is formed on above-mentioned beam barrel 1 15 be formed on the engaging of the planar portions 16 on the inner surface of cylindrical shell 14 and can not carry out the rotation of cylindrical shell 14 with respect to beam barrel 1.On this cylindrical shell 14, and the vertical line of the axis quadrature of above-mentioned beam barrel 1 is that rotation rotates and is provided with butt handle 17 between finger freely.This is in order at random to set the start point with respect to the length direction of beam barrel 1 that this refers to a butt handle 17.That is, other angle can be removed and change to the fixed angle of butt handle 17 to like between referring to also with this fixed angle.If its concrete mechanism is described, refer to that then a butt handle 17 crosses over cylindrical shells 14 and install, this refers to that a butt handle 17 constitutes by the 17a of foot of forked with abutting part 17b between the finger of the 17a of this foot binding, and the bolster 14a that the above-mentioned 17a of foot rotation is installed in cylindrical shell 14 freely goes up (with reference to Fig. 3).In addition, crossing between the finger of cylindrical shell 14 between the abutting part 17b and cylindrical shell 14, be provided with slidably on the track 14b of cylindrical shell 14 be used for and refer between the angular adjustment parts 18 of abutting part 17b butt, be formed with protrusion 18a in the place ahead of these angular adjustment parts 18, be formed with inclined plane 18b at the rear of this protrusion 18a.This protrusion 18a refers to that by order a butt handle 17 is connected to inclined plane 18b and goes up and can keep expanded position with stable status, and the assisted parts as with finger manipulation angular adjustment parts 18 time.

In Fig. 1, angular adjustment parts 18 are configured in the rear, refer to that abutting part 17b and angular adjustment parts 18 are in the not relation of butt between a finger of butt handle 17.At this moment, refer to that abutting part 17b is connected on the inclined plane 18b of angular adjustment parts 18 between a finger of butt handle 17, rotation is stopped and keeping start point α.In addition, Fig. 4 is meant that a butt handle 17 is accommodated in the state in the cylindrical shell 14.On the other hand, in Fig. 5 and Fig. 6, angular adjustment parts 18 slide on the track 14b of cylindrical shell 14 and are configured to the place ahead, refer to that the inclined plane 18b of abutting part 17b and angular adjustment parts 18 between a finger of butt handle 17 is in the relation of butt.At this moment, the spinning movement of butt handle 17 is in by the state of angular adjustment parts 18 Halfway Stopping between finger, refers to that a butt handle 17 is set/is fixed as the start point β bigger than the start point α of butt handle 17 between the finger shown in Fig. 1 with respect to the start point of the length direction of beam barrel 1.And then, in Fig. 7 and Fig. 8, be provided with by inclined plane 18b angular adjustment parts 18 multistage, can adjusting angle regulate the sliding distance of parts 18 and freely set start point, (α＜β＜γ) fixing under each start point.In addition, the start point with respect to the length direction of beam barrel 1 that refers to a butt handle 17 is that 60 degree are suitable, but except the mode that holds of very different writing implements, the following scopes of above 90 degree just can access same effect as long as angle is 30 degree.

Explanation can at random be set and refer to 2nd example of a butt handle with respect to the start point of the length direction of beam barrel 1 with reference to Figure 10.As mentioned above, refer to that the 17a of the foot rotation of a butt handle 17 is installed on the bolster 14a of cylindrical shell 14 freely, and, engaging protrusion 19 on the part on the periphery of the 17a of foot, be provided with.On the other hand, on cylindrical shell 14, with the concentric circle of bolster 14a on be provided with a plurality of end differences 20 that engage, can block with above-mentioned engaging protrusion 19 that anti-avulsion is liftoff to engage.Promptly, the 17a of foot of butt handle 17 is when bolster 14a rotates between referring to, above-mentioned engaging protrusion 19 engages the some of end difference 20 and engages interimly with a plurality of, thus, the start point with respect to the length direction of beam barrel 1 of butt handle 17 between having determined to refer to, and become stationary state.

In addition, also butt handle 17 splits ground between above-mentioned engaging protrusion 19 and finger can be provided with.For example, Figure 11 has considered to make the structure that plate spring component 21 improves the engaging durability, but also can change this plate spring component 21, and adopts bulb stopper etc.

Explanation can at random be set and refer to 3rd example of a butt handle 17 with respect to the start point of the length direction of beam barrel 1 with reference to Figure 12.As mentioned above, the 17a of the foot rotation that refers to a butt handle 17 is installed on the bolster 14a of cylindrical shell 14 freely.Be formed with rotating hole 23 on this refers to the 17a of foot of a butt handle 17, rotation is provided with the turning arm 24 that the wire rod by piano wire etc. constitutes freely in this rotating hole 23.On the other hand, in cylindrical shell 14, be provided with a plurality of butt end differences 25, the pars intermedia 24a of above-mentioned turning arm 24 and butt end difference 25 butts.Promptly, the 17a of foot of butt handle 17 is when bolster 14a rotates between referring to, the pars intermedia 24a of above-mentioned turning arm 24 is connected on a plurality of butt end differences 25 some interimly, and thus, decision refers to the start point of a butt handle 17 with respect to the length direction of beam barrel 1.

Illustrate that with reference to Figure 13 butt handle 17 is to the assemble method of cylindrical shell 14 between above-mentioned finger.Butt handle 17 also can form between finger, but in this example by dividing other parts to constitute.Particularly, swivel bearing portion 26 and the 17a of foot and refer to that an abutting part 17b is formed by suitable resin respectively and links.In the case, refer to that by formation such as stamped metal or castings butt handle 17 main body becomes the good structure of resistance to impact, swivel bearing portion 26 uses the good material of friction, wearing character of polyacetal resin, polyamide etc., the dimensional stability that abutting part 17b can select ABS, Merlon etc. between finger better, outward appearance material preferably, perhaps the hand palpate of thermoplastic elastomer (TPE), polyurethane resin, NBR, silicones etc. the material of feeling good.

In above-mentioned swivel bearing portion 26, and refer between abutting part 17b opposition side be provided with tapered portion 26a, on the other hand, between referring to, be provided with notch 27 on the butt handle 17.And, the position consistency separately of these tapered portion 26a and notch 27.As a result, by above-mentioned notch 27, tapered portion 26a becomes the state that exposes to its peripheral direction from the 17a of foot.Insert as long as hold the main body of butt handle 17 between finger, so that tapering 26a and tapered portion 28 butts that are located on the bolster 14a of above-mentioned cylindrical shell 14, then two 17a of foot just nature expanded and opened, can easily carry out between above-mentioned finger butt handle 17 to the assembling of cylindrical shell 14.

In addition, be provided with engaging protrusion 29 in the inboard of above-mentioned swivel bearing portion 26, and on cylindrical shell 14, be provided with engaging protrusion 30.Above-mentioned engaging protrusion 29 is assembled on the direction relative with two 17a of foot, is fastened on respectively on the engaging protrusion 30 of cylindrical shell 14.As the above-mentioned 17a of foot during with respect to above-mentioned bolster 14a rotation, the card that engaging takes place repeatedly ends and breaks away from, fixedly becoming easily of angle not only thus, but also can bring good thoughts and feelings to rotary manipulation.

The 1st example that the cylindrical shell 14 of butt handle 17 between finger can move with respect to the length direction of beam barrel 1 is disposed in explanation with reference to Figure 14 and Figure 15.On beam barrel 1, same with precedent, be provided with cylindrical shell 14 and refer to a butt handle 17.The opposition side front part that butt handle 17 between finger is installed at cylindrical shell 14 disposes semicircle shape elastomer 31.In addition, on the inside diameter of semicircle shape elastomer 31, be formed with a plurality of engaging protrusion 32.This engaging protrusion 32 by the elastic force of semicircle shape elastomer 31 self to the central axial direction of beam barrel 1 by the application of force, and engage end difference 33 engagings on a part of circumference that is located at this beam barrel 1.This engaging end difference 33 is formed with a plurality of on the length direction of beam barrel 1.In addition, in order to engage releasing,, will be formed on inclined plane part 35 pushing and pressing on the both ends of this semicircle shape elastomer 31 on the inclined plane part 36 of beam barrel 1 with the central axial direction pushing of the sidewall of the pushing portion 34 of semicircle shape elastomer 31 to beam barrel 1.By the butt/pushing of this inclined plane part 35 to inclined plane part 36, above-mentioned engaging protrusion 32 is left from the engaging end difference 33 of beam barrel 1, and engaging is disengaged.That is, as long as pushing pushing portion 34, be fastened on engaging protrusion 32 on the engaging end difference 33 before and will overcome the elastic force of oneself and expand out, can remove above-mentioned engaging thus.Move/mechanism of fixed cylinder 14 by this, can be corresponding to the size of user's hand the position of butt handle 17 between the finger of ground, front and back when regulating the user and controlling beam barrel 1.Example shown in Figure 1 is the situation that the smaller user of hand controls, and is to make butt handle 17 between finger be positioned at the state in the place ahead, and example shown in Figure 14 is under the bigger user of the hand situation of controlling, and is to make butt handle 17 between finger be positioned at the state at rear.

In addition, referring to that than being provided with this cylindrical shell of butt handle 17 14 locates to be provided with handle part 37 on the front.Under the state of Fig. 1, if surround and hold above-mentioned handle part 37 (with reference to Figure 16), then refer to a butt handle 17 between thumb and forefinger with thumb, forefinger, middle finger 3, the result becomes with palm and supports butt handle 17 between whole finger.This supporting force becomes writes the auxiliary of load, has alleviated the burden of 37 pairs of fingers of handle part.In addition, butt handle 17 and handle part 37 but also can be integrally formed by constituting with the other parts of beam barrel 1 between above-mentioned finger.In addition, these refer to that a butt handle 17 and handle part 37 are formed by the elastomeric element of thermoplastic elastomer (TPE) or silicon, nitrile butadiene rubber etc. in order to obtain skidproof effect, but also cover elastomeric element or partly dispose elastomeric element on the surface of butt handle 17 and handle part 37 between the finger that can form, also can apply the coating that can access skidproof effect etc. and make its curing in material by hard.Particularly, because also worrying can effect have bigger power on the butt handle 17 between referring to, so also this parts material with hard can be formed, adhere to elastomeric element in its surface or trickle concavo-convex annular knurl processing etc. is implemented on the surface of butt handle 17 between referring to anti-skidding effect.

In this example, handle part 37 is made of thermoplastic elastomer (TPE), has implemented to be similar to a plurality of curly figures 38 of the fingerprint of finger in its surface.If specifically describe, then this spacing P of wavy is 15.0mm, and wavy height H is 4.7mm, and adjacent wavy interval S is 0.9mm, and the degree of depth M of groove be 0.35mm (Figure 17, Figure 18).Be similar to the decorative pattern of fingerprint by implementation of class, this decorative pattern can bring with the delicate friction of fingerprint collaborative, has improved the finger of controlling thus to controlling the skidproof effect of parts.In addition, this handle part 37 is made of thermoplastic elastomer (TPE), by on the internal layer 6 that constitutes by soft material and the surface that covers this internal layer and the skin that constitutes by the material higher than internal layer hardness constitute.In the present embodiment, in internal layer, use the soft silicon of Xiao A hardness 10 degree～20 degree, the outer thin siliceous skin film that uses Xiao A hardness 30 degree～70 degree.Can feel the softness of internal layer, and prevent adhering to outer field surface such as dust or booty.

In addition, in this example, the beam barrel 1 that disposes cylindrical shell 14 is configured to can be with respect to the rotating in a circumferential direction of the axle center of axis 40 via O shape ring 39, and axis 40 has prevented coming off from beam barrel 1 by the rear end flange part 40a that is formed on the rearward end with engaging of inner surface end difference 42 on the pars intermedia inner surface that is formed on beam barrel 1.Dispose freely with respect to beam barrel 1 rotation by the cylindrical shell 14 that will be provided with butt handle 17 between finger, the writing portion of ball pen or the core of propelling pencil are rotated with respect to butt handle between referring to 17, for example can easily change the direction of core of the propelling pencil of one-sided minimizing, can keep good writing thus.In addition, also as previously discussed, be formed with planar portions 15 on the side of beam barrel 1, the planar portions 16 that is formed on the inner surface of cylindrical shell 14 is fastened on this planar portions 15.Thus, prevented the relative rotation of cylindrical shell 14 with respect to beam barrel 1.In addition, by above-mentioned O shape ring 39 is installed between beam barrel 1 and the axis 40, their relative spinning movement is applied resistance.Feasible not understanding inner rotary.

In addition, label 41 is the clips that are fixed on the beam barrel 1, this clip 41 be installed in and above-mentioned finger between butt handle 17 opposition sides.When writing, because clip 41 is positioned at and grips direction (between the finger of thumb and forefinger) opposition side, so can access good gripping state.That is, be installed on the position that can not become obstacle.

In addition, in the present embodiment, by make butt handle 17 between finger with respect to the vertical line rotation of the axis normal of beam barrel 1, can change the start point of the length direction of beam barrel 1, and can take in respect to beam barrel 1, but also can perhaps adopt linkage, take in respect to beam barrel by butt handle 17 between above-mentioned finger being made folding structure or being adopted the structure that slides with respect to beam barrel 1.

Then, with reference to Figure 19～Figure 21 the 4th example that can take in butt handle 17 between finger to beam barrel 1 is described.Butt handle 17 rotatably is provided with respect to 1 14d of swinging strut portion that is located on the cylindrical shell 14 between finger, this swinging strut portion 42 is installed with the angle of 60 degree with respect to the axial line of beam barrel 1, but as long as swinging strut portion 42 is that the following angles of above 90 degree of 45 degree just can access same effect with respect to the angle of beam barrel 1, but, be above 75 degree of 55 degree following (make the angle with respect to axial line of butt handle 17 is that above 70 degree of 30 degree are following between finger) with respect to the angle initialization of beam barrel 1 particularly preferably with the 14d of swinging strut portion.Like this, have angle by making the 14d of swinging strut portion with respect to beam barrel 1, butt handle 17 refers to then that with respect to the 14d of swinging strut portion rotation a butt handle 17 launches with respect to beam barrel 1 between finger if make.Certainly, the position when butt handle 17 is taken in respect to beam barrel 1 between fixing the finger when launching preferably is configured in the concavo-convex snap fastener that engages on each position etc.Particularly, on cylindrical shell 14, be formed with protuberance 43, between referring to the inboard of butt handle 17 be formed with this protuberance 43 card anti-avulsions from recess 44.Label 45 is to be used for butt handle between referring to 17 is rotated the lid that is fixed on freely in the swinging strut portion 42.In this example,, the surface 46 of butt handle 17 between finger controls a side after expansion owing to also being present in by palm, thus can access good sense of touch, and can not damage attractive in appearance.That is, be formed with planar portions 47 at the pars intermedia of cylindrical shell 14 cylindraceous, butt handle 17 was located so that it is embedded in the above-mentioned planar portions 47 between should referring to during the taking in of butt handle 17 between referring to.In addition, in this example, the cylindrical shell 14 that butt handle 17 between finger is installed can seesaw with respect to beam barrel 1, can regulate according to the size of user's hand.

Then, with reference to Figure 22～Figure 24 the 5th example that can take in butt handle 17 between finger with respect to beam barrel is described.Make rotating shaft 1a have the angle of 30 degree and rotate installation freely with respect to the axle center of beam barrel 1, but butt handle 17 is integrally formed on the cylindrical shell 14 of ring-type between will referring in fact, the cylindrical shell 14 that will have butt handle 17 between finger is installed freely with respect to beam barrel 1 rotation.In addition, in this example, establishing butt handle 17 between finger is 60 degree with respect to the angle of beam barrel 1, but so long as the scopes of 30 degree～70 degree just can access same effect.

Action is described, if make cylindrical shell 14 with respect to the rotating shaft 1a rotation that is located at beam barrel on 1, butt handle 8 launches with respect to beam barrel 1 then and between the integrally formed finger of cylindrical shell 14.In the case, because the restriction on the size of rotating shaft 47 and cylindrical shell 14 is less, so carry out full intensity design, the intensity of butt handle 8 between the finger after also can obtaining fully launching easily.

Then, illustrate that with reference to Figure 25～Figure 27 butt handle 8 between above-mentioned finger is with respect to the length direction of beam barrel 1 the 2nd example movably.Embedding slidably on the periphery of beam barrel 1 has cylindrical shell 14, and butt handle 17 between finger is installed on this cylindrical shell 14.In addition, on beam barrel 1, circumferencial direction along its length is formed with a plurality of grooves 48, on the other hand, forms porose 49 at the front part of cylindrical shell 14.Be fixed in that this cylindrical shell 14 is moved forward and backward under the situation on the beam barrel 1, the hole portion 49 by cylindrical shell 14 is fastened in the slot part 48 of beam barrel 1 engaging protrusion 50 of butt handle 17 between finger.Thus, with cylindrical shell 14, promptly refer to the fixed-site of a butt handle 17 with respect to beam barrel 1.Butt handle 17 launched to carry out with respect to beam barrel 1 between the utilization of this snap action will refer to.Be user mode.In the case of this example, this engaging protrusion 50 is located on the part of butt handle 17 between finger, but also can on the inner surface of cylindrical shell 14, forms the projection etc. of elastically deformable and engage/non-engaging with above-mentioned slot part 49.

The mechanism that moves/fix by butt handle 17 between will referring to, the position of butt handle 17 between the finger when regulating the user before and after can coming corresponding to the size of user's hand and controlling beam barrel 1.Example shown in Figure 25 is the situation that the smaller user of hand controls, and is to make butt handle 17 between finger be positioned at the state in the place ahead, and the example shown in Figure 26 (Figure 27) is the situation that the bigger user of hand controls, and is to make butt handle 17 between finger be positioned at the state at rear.

Then, with reference to Figure 28～Figure 31 the 3rd example that butt handle 17 can move with respect to the length direction of beam barrel 1 between above-mentioned finger is described.Front part at the circumferential opposition side that butt handle 17 between finger is installed of above-mentioned cylindrical shell 14 (from the positions of butt handle between referring to 180 degree that rotate in a circumferential direction) disposes engaging body 51, make the engaging protrusion 53 of engaging body 51 be subjected to the application of force by tabular elastomer 52, so that it is fastened on the engaging end difference 55 on a part of circumference of being located at beam barrel 1 to beam barrel 1 side.This engaging end difference 55 is formed with a plurality of on the length direction of beam barrel 1.

In order to engage releasing, just passable as long as pushing is positioned at the pushing portion 56 in the place ahead that engages body 51.The front part of pushing portion 56 is toppled over towards the direction of central axis, and then quadrate part stretches out towards the external diameter direction.At this moment, engaging protrusion 53 is bearing on the fulcrum 57 and breaks away from from the engaging end difference 55 of beam barrel 1, and engaging protrusion 53 is disengaged with the engaging that engages end difference 55.

By this cylindrical shell 14 is moved, fixing mechanism, the position of butt handle 17 between the finger when regulating the user before and after can coming corresponding to the size of user's hand and controlling beam barrel 1.Example shown in Figure 28 is the situation that the smaller user of hand controls, and is to make butt handle 17 between finger be positioned at the state in the place ahead, and example shown in Figure 31 is the situation that the bigger user of hand controls, and is to make butt handle 17 between finger be positioned at the state at rear.

The 4th example that the cylindrical shell 14 of butt handle 17 between finger can move with respect to the length direction of beam barrel 1 is disposed in explanation with reference to Figure 32 and Figure 33.On beam barrel 1, and precedent similarly is provided with cylindrical shell 14 and refers to a butt handle 17.On the front part that the opposition side of butt handle 17 between finger is installed of cylindrical shell 14, dispose/be fixed with tabular elastomer 58, dispose slide mass 59, so that it covers tabular elastomer 58.In addition, at the front part of tabular elastomer 58, be formed with towards the place ahead engaging protrusion 61 to the inclination (rake 60) of central axial direction step-down.This engaging protrusion 61 utilize tabular elastomer 58 self elastic force and to the central axial direction of beam barrel 1 by the application of force, with on a part of circumference that is located at this beam barrel 1, towards the place ahead successively undergauge cone shape engage 62 engagings of rank (groove) portion.This engaging end difference 62 is formed with a plurality of on the length direction of beam barrel 1.In addition,, slide mass 59 is forwards slided, the inclined-plane 63 that is formed on this slide mass 59 is pushed against on the rake 60 of tabular elastomer 58 in order to engage releasing.Utilize butt, the pushing of this inclined plane part 63 to inclined plane part 60, above-mentioned engaging protrusion 61 is left from the engaging end difference 62 of beam barrel 1.In addition, in this example, do not need above-mentioned releasing operation under the situation that cylindrical shell 14 (referring to a butt handle 17) is rearward moved, engaging is disengaged automatically.Promptly, when making cylindrical shell 14 rearward mobile, above-mentioned tabular elastomer 58 is stuck the top of end difference 62 to external diameter direction pushing distortion, thus, engaging protrusion 61 is removed with the engaging that engages end difference 62 temporarily, and above-mentioned engaging protrusion 61 is engaged on (being positioned at the rear portion) next engaging end difference 62 once more.

The 5th example that the cylindrical shell 14 of butt handle 17 between finger can move with respect to the length direction of beam barrel 1 is disposed in explanation based on Figure 34 and Figure 35.On beam barrel 1, and precedent similarly is provided with cylindrical shell 14 and refers to a butt handle 17.Cylindrical shell 14 be equipped with that the circumferential opposition side of butt handle 17 disposes thumbscrew 64 between finger, combine with cylindrical shell 14 screw threads.In this example, if when being fixed on cylindrical shell 14 on the beam barrel 1 to fastening direction reverse thumbscrew 64, to reverse thumbscrew 64 just passable to loosening direction when fixed solution is removed.Can infinitely set the installation site of cylindrical shell 14 (referring to a butt handle 17) with respect to beam barrel 1.

The 6th example that the cylindrical shell 14 of butt handle 17 between finger can move with respect to the length direction of beam barrel 1 is disposed in explanation with reference to Figure 36 and Figure 37.On beam barrel 1, and precedent similarly is provided with cylindrical shell 14 and refers to a butt handle 17.The place ahead and rear at cylindrical shell 14 dispose nut 65,66, and screw thread is attached on the pin thread 67 of beam barrel 1 respectively.It is so-called double nut.In this example, when mobile cylindrical shell 14, as long as the nut 65,66 before and after making is fastening just passable with the nut 65,66 of cylindrical shell 14 usefulness front and back on the position that the direction of wanting to move moves, wanting to fix.In this example, also can infinitely set the installation site of cylindrical shell 14 (referring to a butt handle 17) with respect to beam barrel 1.

The 7th example that the cylindrical shell 14 of butt handle 17 between finger can move with respect to the length direction of beam barrel 1 is disposed in explanation with reference to Figure 38 and Figure 39.On beam barrel 1, and precedent similarly is provided with cylindrical shell 14 and refers to a butt handle 17.On the inside diameter that the circumferential opposition side of butt handle 17 between finger is installed of cylindrical shell 14, be provided with hemispheric protuberance 68, the elasticity of utilizing resin to the center position of beam barrel 1 by the application of force.On the periphery of beam barrel 1, left-handed, alternately repeat to be provided with slot part 69 dextrorsely, this slot part 69 is at certain intervals and at the state backspin that tilts then form the part of spiral.It is so-called flexuose slot part 69.And, in the place of the direction of rotation of slot part 69 counter-rotating, be a flexuose place of turning back, be respectively equipped with recess 70 with degree of depth darker than above-mentioned slot part 69.The protuberance 68 of above-mentioned cylindrical shell 14 is entrenched in this recess 70, the position of decision cylindrical shell 14.That is, become the state that cylindrical shell 14 is fixed with respect to beam barrel 1.Thus, cylindrical shell 14 (referring to a butt handle 17) is slided and when regulating, can the impetus excessively not cross the position of wanting the user, can be reliably certain interval in slip, operability further improves.

In above example, refer to that a butt handle 17 can at random set (Fig. 1 etc.) with respect to the start point of the length direction of beam barrel 1.If example for example shown in Figure 10 is specifically described once more, then as mentioned above, refer to that the 17a of the foot rotation of a butt handle 17 is installed on the bolster 14a of cylindrical shell 14 freely, on the part on the periphery of the 17a of this foot, be provided with engaging protrusion 19.On the other hand, on cylindrical shell 14, with the concentric circle of bolster 14a on be provided with a plurality of end differences 20 that engage, can block with above-mentioned engaging protrusion 19 that anti-avulsion is liftoff to engage.Promptly, the 17a of foot of butt handle 17 is when bolster 14a rotates between referring to, above-mentioned engaging protrusion 19 engages the some of end difference 20 and engages interimly with a plurality of, and butt handle 17 and becomes stationary state with respect to the start point of the length direction of beam barrel 1 between having determined thus to refer to.In addition, the start point with respect to the length direction of beam barrel 1 that refers to a butt handle 17 is that 60 degree are suitable, but except the mode that holds of very different writing implements, the following scopes of above 90 degree just can access same effect as long as angle is 30 degree.

Then, butt handle 17 between above-mentioned finger is changed with respect to the angle of the length direction of beam barrel 1 and carried out monitoring and surveying (experiment).This investigation method and monitoring result are described.

The substantial middle portion that is produced on beam barrel 1 (ball pen) be provided with the model of butt handle 17 between finger (G～L) and do not have to refer between 7 models (with reference to Figure 40) of model (M) of butt handle 17.Butt handle 17 leaves the distance of ball-point pen tip and can regulate with respect to angle (3 levels: 30 degree, 60 degree, 90 degree), the length (two level: 2cm, 4cm) of beam barrel 1 between finger.The monitoring of investigation (experiment) is after setting refers to a position of butt handle 17 in each model, will write 5 times " day in year of Congress " in B lattice writing book.Electromyogram during measurement is write and write pressure.For subjective assessment, carry out a pair of comparison by 5 grades about " writing easness ", " indefatigability degree ".The testee is 15 people (male sex: 9 people, the women: 6 people are right-handed).Prompt modes for fear of the influence of model prompting order and randomly in write detection.

The measurement project is as follows.

1, electromyogram: utilize Port リ グ ラ Off PEG-1000 (Japanese photoelectricity (strain) system) to derive the short thumb musculus flexor of the right hand, the myoelectricity of first dorsal interossei, with frequency band 5～100Hz, sampling rate 250Hz record.

2, write pressure: with writing pressometer (Zhu formula Hui She East ocean ボ one Le De ゥ ィ Application system) record.

3, subjective assessment: a pair of comparison.

(experiment) result is as follows in investigation.

Electromyogram during at first confirmation form is done the homework (below be called EMG).With 5 times are write in each sample " Congress year day " the 3rd time, the EMG of the 4th integration respectively, compare by dispersion analysis.As a result, in the EMG of short thumb musculus flexor (p=0.042), first dorsal interossei (p=0.016), judge and between sample, have significant difference (with reference to Figure 41).At this moment, between sample, can't see significant difference, can not become the obstruction of writing, can carry out common writing so also can confirm to refer to a butt handle 17 for writing pressure.In short thumb musculus flexor, have a plurality of with respect to the less significantly model (H, J, K) of the model that does not have assisted parts (M) muscle burden as common writing implement, so be that the result that the 4th support has brought the muscle burden in writing to alleviate is set.Particularly, the sample of H, J is because short thumb musculus flexor, all the muscle activity amount is lower for first dorsal interossei, writes the condition of assisted parts and thinks strong so alleviate the higher wing of effect as fatigue.

On the other hand, behind the average preference degree of confirming each sample by subjective assessment, in " writing easily ", " indefatigability " both evaluations, can between sample, confirm significant difference (with reference to Figure 42).In subjective assessment, 90 ° angle (I, L) be evaluated as be difficult for writing, easily tired.In addition, if divide the men and women to see, also the women is evaluated as G, H, the male sex " write easily, indefatigability " (with reference to Figure 43) with H, K as can be known.

Think that the male sex in this subjective assessment, women's the difference origin of evaluation is in the size (length of finger) of hand.The women that hand is less, finger is also short to the wing short G, H be felt as easily and write, indefatigability, otherwise the male sex that hand is big, finger is long has and feels that the long K of the wing is preferred tendency.

According to these results, butt handle 17 is H (60 degree, 2cm) between the higher finger of the effect that alleviates of muscle burden and a pair of comparative evaluation as can be known.

In addition, in this investigation, make to be provided with between finger butt handle 17 and to have attempted objective appraisal as the writing implement (beam barrel 1) of the 4th support.As a result, the muscle burden in the operation of writing based on butt handle 17 between referring to alleviates effect and becomes obvious.In addition, in subjective assessment, also judged simultaneously and satisfied angle, the length of the wing of the effect of " write easily, indefatigability ".Writing implement is not only in the setting that reflects butt handle 17 between these results' finger, also can be to many-sided application such as tablewares.

Then, the several examples that are built-in with propelling pencil as writing implement are described.Its 1st example is represented in Figure 44～Figure 53.Basic exterior structure is identical with Fig. 1.Give identical label for identical structure.In the inside of beam barrel 1, taken in core delivering mechanism 71.This core delivering mechanism is described.The place ahead at the core container 72 that can accommodate a plurality of cores, the clamping body of controlling, discharging 74 that carries out core is installed via joint component 73, pars intermedia at above-mentioned joint component 73 is pressed into/is fixed with ring component 75, on the outer peripheral face of this ring component 75, on equally spaced 4 positions, be formed with vertical rib 76.In addition, center on the clamping ring 77 that the switching of carrying out clamping body 74 is arranged in the place ahead of above-mentioned clamping body 74.And,, dispose to be built-in with and stop the core send to retreat and return the slide unit 78 that stops parts 78 by the core that elastomeric elastomer constitutes in the place ahead of clamping body 74.On the other hand, at the rear of above-mentioned core container 72, rubber 80 is installed freely via 79 dismounting of rubber carrier.Label 81 be cover rubber 81 and be used for carrying out core send operation by hitting portion, install freely with respect to above-mentioned rubber carrier 79 dismounting.

Screw thread 82 in the place ahead of above-mentioned core delivering mechanism 70 is equipped with, and by screw thread in this 82 core delivering mechanism 71 are fixed on the front axle 83.If specifically describe, then this front axle 83 is made of axis 83a and tipped tool 83b, and dismounting is fixing freely by the screw thread combination for these axis 83a and tipped tool 83b.And, be clamped between axis 83a and the tipped tool 83b by the flange part 82a on the middle screw thread 82 that will be formed on above-mentioned core delivering mechanism 71, core delivering mechanism 71 is fixing with respect to front axle 83.In addition, on the outer peripheral face of middle screw thread 82, be formed with vertical rib 84, and on inner peripheral surface, be formed with pod 85.And the vertical rib 84 of middle screw thread 82 can be engaged in the pod 86 of above-mentioned axis 83a, and on the other hand, the vertical rib 76 of above-mentioned ring component 75 can be engaged in the pod 85 of middle screw thread 82.Thus, when making handle part 37 with respect to beam barrel 1 rotation, its rotation is passed to the clamping body 74 of controlling core reliably, and the core of one-sided minimizing is rotated reliably.

And then, the place ahead of screw thread 82 in above-mentioned, dismounting is fixed with metal tip member 87 freely by the screw thread combination.In addition, in above-mentioned, open the elastomeric element 88 be provided with helical spring etc. between screw thread 82 and the core container 72, to core container 72 and clamping body 74 etc. towards the rear application of force.

Here, on above-mentioned tip member 87, dispose metal slide unit 89, be provided with the above-mentioned core that constitutes by rubber-like elastic body that retreats that stops core in this slide unit 89 and return and stop parts 78.Above-mentioned core is return and is stoped parts 78 also to apply frictional resistance for the slip of tip member 87 and slide unit 89.In addition, slide unit 89 is set to return with respect to core than core with respect to the frictional resistance of this tip member 87 and stops the frictional resistance of parts 78 big.In addition, on the inner surface of the place ahead of above-mentioned tip member 87, be formed with reducing diameter part 87a, be formed with large-diameter portion 87b on the rear inner surface of this minor diameter part 87a, these minor diameter parts 87a is connected with large-diameter portion 87b and integrally formed, but also can be by dividing other parts to constitute and interconnecting.But,, preferably integrally formed in order to make mutual central axis unanimity.The peripheral part sliding-contact of slide unit 89 is on above-mentioned minor diameter part 87a, on the other hand, core is return the 78a of the peripheral outer lips portion sliding-contact of prevention parts 88 on large-diameter portion 87b, and as mentioned above, this core is return and stoped parts 78 (slide unit 89) that tip member 87 is applied frictional resistance.In addition, in this example, stop the 78a of the peripheral outer lips portion sliding-contact of parts 78 on tip member 87, to apply frictional resistance by core is return, but also can encircle 90 and wait and apply frictional resistance (Figure 50) by between tip member 87 and slide unit 89, clamping O shape.

And then, in this example, will all form at tip member 87 and the slide unit 89 that in this tip member 87, slides, but also can make the resin material with metal material, also can make them different mutually.In addition, in this example, in above-mentioned, clamp the O shape ring 91 that constitutes by elastic caoutchouc in the screw thread bound fraction of screw thread 82 and tip member 87.By clamping O shape ring 91, prevented the loosening of middle screw thread 82 and tip member 87, and by making tip member 87 with respect to middle screw thread 82 dismounting freely, can make each self-separation wittingly, slide unit 89 is pulled down, thus, can carry out just in case the repairing work under the situation that tip member 87 inner cores fracture etc.

Label 92 is the resinous tip members that the transparency is arranged that are pressed in the front inner surface of above-mentioned tip instrument 83b, and at the rear of this tip member 92, slit 92a is formed on opposed two positions.Be to be used for making tip member 92 to be plugged into slit among the instrument 83b of tip easily, the back quadrate part of tip member 92 is being inserted under the state of internal diameter direction deflection among the above-mentioned tip instrument 83b, and after grafting,, can access the power that is pressed into steady in a long-term though the power that is pressed into relaxes to some extent.And above-mentioned tip member 87 is positioned on the rear inner surface of this tip member 92 with circumferential state of contact.That is, circumferentially contact on tip member 92, make tip member 92 consistent with the central axis of slide unit 78 by making tip member 87.In addition, tip member 87 since as described above via middle screw thread 82 screw threads in conjunction with being fixed on the core delivering mechanism 71, so not only with core delivering mechanism 71, also consistent with the central axis of above-mentioned tip member 92 etc.And, by making core delivering mechanism 71 (middle screw thread 82) correctly consistent with the central axis of tip member 92 and slide unit 78, can bending etc. by the core of sending from clamping body 74, and correctly core is return and is stoped parts 88 guidings, stretches out from the tip of slide unit 78.

In addition, the place ahead inner surface of above-mentioned tip member 92 is minor diameter part 92b, and on the other hand, the rear inner surface that is formed with slit 92a is large-diameter portion 92c.And the profile of above-mentioned tip member 87 also has minor diameter part 92b and the equal external diameter of large-diameter portion 92c with tip member 92.That is, two different positions of diameter are circumferentially contacted.Mutual parts are assembled easily, and improved the circumferential contact force after the assembling.

In addition, above-mentioned tip instrument 83b also can be made of metal material, but is formed by the resin material in this example, has implemented coating processing (coating 40) on the surface of this resin, but also can form the dope layer that is coated with coating etc.And, as mentioned above, in this tipped tool 83b, be fitted with tip member 92, also have the effect same with precedent.

Then, explanation is configured in the 2nd example with respect to the rotating mechanism of beam barrel 1 that core delivering mechanism in the beam barrel 1 or ball pen are replaced core with reference to Figure 54～Figure 58.The 1st example is the example that clamps O shape ring between above-mentioned beam barrel 1 and axis 12.

Beam barrel 1 is made of the front axle 83 (axis 83a) of the beam barrel 1 of having adorned the cylindrical shell 14 with butt handle 17 between above-mentioned finger outward with bag embedding handle part 37 as mentioned above, and these beam barrels 1 link freely with the rotating in a circumferential direction of axial line of front axle 83 with respect to beam barrel 1.In addition, on the surface of beam barrel 1, be formed with planar portions 83, be formed on planar portions on the inner surface of cylindrical shell 14 with the state contact of crimping on this planar portions 83.Thus, prevented the relative rotation of cylindrical shell 14 with respect to beam barrel 1.On the inner surface of above-mentioned beam barrel 1, be formed with inner surface end difference 42, on the other hand, on the rear end of front axle 83 (axis 83a), be formed with the rear end flange part 40a that engages with above-mentioned inner surface end difference 42.These inner surface rear ends flange part 40a engages with end difference 42, strengthens some and beam barrel 1 is applied the spin friction resistance with the relative rotation of front axle 83 by making its engaging power.That is, if do not apply to a certain degree load, then beam barrel 1 just can not rotate relatively with front axle 83.

In addition, in this example, the elastomeric element 93 of helical spring etc. is configured between beam barrel 1 and the front axle 83, to the above-mentioned parts application of force in the longitudinal direction mutually.That is, utilize 93 pairs of elastomeric elements, the rotation of beam barrel 1 and front axle 83 is also applied the spin friction resistance by this application of force mutually to the direction application of forces of separating.In addition, by changing the elastic force of this elastomeric element 93, can easily change/set the spin friction resistance of above-mentioned beam barrel 1 and front axle 83.In addition, in this example,, outward appearance make above-mentioned elastomeric element 93 be arranged in the inside of beam barrel 1 for being improved.Particularly, on the inner surface of the place ahead of beam barrel 1, be formed with big footpath spatial portion 94, in this big footpath spatial portion 94, dispose elastomeric element 93.And 93 of this elastomeric elements are located at by between the intermediate flange portion 95 that forms inner surface end difference 94a that big footpath spatial portion 94 forms and axis 83a.But, consider interest, also can establish elastomeric element 93 following of the state between the intermediate flange portion 95 of leading section that is exposed to beam barrel 1 and front axle 83.

Near the both ends of above-mentioned elastomeric element 93, be formed with planar portions 93a.By near both ends, forming par 93a, prevented as far as possible the bight of end of elastomeric element 93 and beam barrel 1 (front axle 83) contact site collude extension.If collude the extension phenomenon, then can bump and produce dust because of this wiping, if collude extension at the drop of a hat, can make elastomeric element (helical spring) 93 hole enlargements, have and can not carry out counterrotating danger.

And then, in this example, be provided with metal packing ring 96 (Figure 59) in the front and back of above-mentioned elastomeric element 93.By clamping packing ring 96, can further prevent the above-mentioned extension phenomenon of colluding between elastomeric element 93 and each.In addition, on the outer surface of this packing ring 96, though it is less but be formed with a 96a of portion, the inner surface of the end that also can prevent elastomeric element 93 and big footpath spatial portion 94 collude the extension phenomenon, and by on the inner surface of packing ring 96, also forming tube portion, can prevent front axle 83 outer surface collude the extension phenomenon.

In addition, also can change above-mentioned helical spring elastomeric element 93 and use saucerspring 97 (Figure 60, Figure 61).On this saucerspring 97, on equally spaced position, be formed with kink 97a.This saucerspring 97 so the extension phenomenon of colluding as described above can not take place, can be cut down packing ring and assembling procedure number owing to there is not the end thus.

Label 41 is to be constituted and be installed in clip on the beam barrel 1 by other parts, but also can be integrally formed.Same with precedent, this clip 41 be located at and above-mentioned finger between on the position of butt handle 17 opposition sides.Be located at when becoming on the part of obstruction writing Shi Buhui.

Effect is described.Under the situation that beam barrel 1 (cylindrical shell 14) is relatively rotated with respect to front axle 83, also can hold front axle 83 (handle part 37) with left hand, hold beam barrel 1 and it is relatively rotated with the right hand, while but also can keep writing state and rotate.That is, since between referring to butt handle 17 by the finger root clamping of thumb and forefinger, so the rotation of beam barrel 1 is prevented from.Here, as long as apply turning effort by thumb, forefinger and the middle finger of controlling handle part 37 to controlling parts 37, front axle 83 will rotate.By the rotation of this front axle 83, the core delivering mechanism (script) 71 that is fixed on this front axle 83 also rotates.

The 3rd example of above-mentioned rotating mechanism is described with reference to Figure 62～Figure 66.On circumferential ends, on equally spaced position, be formed with a plurality of recesses 98 as the leading section of above-mentioned beam barrel 1.On the other hand, on the upper surface of the intermediate flange portion 95 of front axle 83 (axis 83a), be formed with the recess 98 card anti-avulsions of above-mentioned beam barrel 1 from teat 99.This teat 99 is formed on 4 positions of quadrature, but is not limited to this.In addition, as shown in the previous example, beam barrel 1 and front axle 83 by elastomeric element 93 to the direction that is separated from each other by the application of force, always become above-mentioned recess 98 and the more shallow state (with reference to Figure 63) of engaging of teat 99.That is, beam barrel 1 and front axle 83 are relatively rotated.In addition, when writing, be applied between finger on the butt handle 17 owing to write pressure, so beam barrel 1 overcomes the elastic force of above-mentioned elastomeric element 93 and advances, above-mentioned thus recess 98 deepens with engaging of teat 99.That is, must apply bigger power, carrying out beam barrel 1 could relative rotation with front axle 83.As a result, even it is higher to write pressure ratio, can easily rotate yet, and can carry out stable writing.In addition, under the situation of wanting to make front axle 83 rotations, write pressure, can easily be rotated by loosening slightly.

In addition, also can change above-mentioned tip member 92 and make the guiding tube of elastically deformable.Below, with reference to Figure 67～Figure 68 its concrete example is described.On the front end inner surface of above-mentioned front axle 83 (preceding axial region 83a), be pressed into/be fixed with the holding member 100 that constitutes by elastomer.This holding member 100 is formed by the rubber material of polyurethane rubber, ethylene propylene rubber, epoxy rubber, acrylic rubber, EP rubbers, neoprene, natural rubber, isoprene rubber, haloflex, nitrile butadiene rubber, silicon rubber etc., but also can be the vinyl elastomer, the elastomer of olefin type elastomer, ester class elastomer, ammonia ester class elastomer, elastomer gel, polyethylene gel etc.In addition, also can be the elastic resin of acrylic resin, fluororesin, vinyl chloride, polyvinyl resin etc.

The front part of holding member 100 is the cone shape that attenuates towards the place ahead front end, and this conus portion 101 exposes from the leading section of above-mentioned front axle 83.In addition, on the pars intermedia periphery of holding member 100, be formed with circumferential groove 102, in this circumferential groove 102, embed the circumferential projection 103 that has on the inner peripheral surface that is formed at the 83a of front axle portion.That is, be embedded in the circumferential groove 102 by circumferential projection 103, holding member 100 is fixed on the front axle 83 and has prevented to come off.In addition, on the inner surface of holding member 100, begin to be formed with minor diameter part 104, large-diameter portion 105 from the place ahead, these minor diameter parts 104 and large-diameter portion 105 are connected to form by conus portion 106.The internal diameter of this minor diameter part 104 is than the external diameter of the tip 13 of the ball-point pen refill 2 that uses path slightly, and on the other hand, the internal diameter of large-diameter portion 105 is than the external diameter of the tip member 87 of propelling pencil unit path slightly.At the rear portion of this large-diameter portion 105, be formed with the conus portion 107 that expands out towards the rear.Easiness during assembling when having realized plug-in mounting ball pen or propelling pencil unit.In addition, above-mentioned minor diameter part 104 is formed on the position that axial region 83 exposes in the past, on the other hand, and the inside of axial region 83a before large-diameter portion 105 is arranged in.

In the inside of beam barrel 1, dispose the core delivering mechanism 71 of propelling pencil equally with precedent, but also can use デ PVC ッ ト formula cam etc. that propelling pencil is configured to respect to beam barrel 1 extended withdrawal.And the outer diameter part 108 of above-mentioned tip member 87 also can contact with the large-diameter portion 105 of above-mentioned holding member 100 under the state that is pressed into slightly.In addition, because large-diameter portion 105 is arranged in the inside of preceding axial region 83a, so the inner surface of the outer periderm front axle 83a of portion of this large-diameter portion 105 has stoped distortion.That is, prevented propelling pencil with respect to the rocking of beam barrel 1, even and if with core from propelling pencil sending, when writing since the strain of holding member 100 and slightly distortion also can obtain the sense of writing of hard.

In this example, large-diameter portion 105 contacts are remained on the tip member 87 of propelling pencil, but near the contact of front end of tip member 87 is remained on the minor diameter part 104.By keeping with minor diameter part 104, because the peripheral part of minor diameter part 104 exposes, so can access bigger strain, the result can access the sense of writing of softness as writing with writing brush.

In addition, the material of above-mentioned holding member 100 is as described in the precedent, and hardness preferably is set at Xiao A hardness 50 degree～80 degree, also can access roughly same effect but be made as 5 degree～80 degree.But, under the situation below 50 degree, according to user's hobby, when writing the distortion quantitative change of writing portion many, also occur the user of sense of discomfort.

In addition, in above-mentioned, for minor diameter part 104 and large-diameter portion 105, having their parts in thought is orbicular notions, but is under the situation of special-shaped shape at these parts, can be understood as its shape less or bigger little shape portion, big shape portion.

Figure 69 is an example of adorning the ball-point pen refill 2 of water-base ink or oily ink in beam barrel 1 in disposing.Ball-point pen refill 2 is made of the ball-point pen tip 13 that is used for accommodating the ink cartridge 109 of ink and is pressed into/is fixed on the place ahead of this ink cartridge 109, and on the front end of this ball-point pen tip 13, rotation is equipped with the ball 110 as writing portion freely.

This ball-point pen refill 2 by the elastomeric element 111 of helical spring etc. rearward, the direction of promptly taking in respect to beam barrel 1 is subjected to the application of force.Label 112 is the parts of accepting of the above-mentioned elastomeric element 111 of restriction moving forwards, is pressed into/is fixed on the inner surface of rear, beam barrel 1 of above-mentioned holding member 100.In addition, label 113 is formed in the teat on the pars intermedia of ball-point pen refill 2, forms an end of above-mentioned elastomeric element 111.

At the rear of this beam barrel 1, dispose be used for making デ PVC ッ ト formula cam that ball-point pen refill 2 advances, retreats etc. general stretch out retraction mechanism (not shown), can keep the state that stretches out of above-mentioned ball-point pen refill 2.

In this example, the ball-point pen tip 13 of ball-point pen refill 2 is to be pressed into the state contact slightly, to remain on the minor diameter part 104 of above-mentioned holding member 100.Minor diameter part 104 axial region 83a in the past exposes, and the distortion on its surface is not limited, so can more freely be out of shape.As a result, when writing, keep flexibly along the circumferential direction moving, thus, can access the sense of writing as writing brush with flexibility while ball-point pen tip 13 can be held parts 100 with ball-point pen refill 2.

In addition, because this example is to stretch out the ball pen of retractably,, can accesses good stretching out and regain action so when this stretched out the withdrawal action, the conus portion 106 or 107 of holding member 100 became guidance part.

More than, enumerate make holding member 100 in the past the example that exposes of the front end of axial region 83a be illustrated, expose by making holding member 100, also become just in case the interference part of writing implement when desk drops.That is,, cushion the impulsive force of writing implement self by holding member 100 strains.Particularly, in stretching out the writing implement of retractably since holding member 100 directly with fierce bump the such as ground, so its cushioning effect is very big.

Industrial applicibility

According to the beam barrel that possesses the writing implement that keeps auxiliary member of the present invention, essential characteristic is, Form at the pars intermedia of the length direction of beam barrel and to refer to referring to that than this butt handle is forward by a butt handle Quadrate part arranges handle part, and butt handle between above-mentioned finger is configured to and can carries out with respect to beam barrel Take in, by this structure, not affected by user's holding mode and grip and stably Therefore the supporting writing implement, also can obtain writing negative by smaller hold fully Lotus, and can make Portability, operability also good.

Claims (10)

1. beam barrel with writing implement of auxiliary member, on the beam barrel of writing implement, form at the pars intermedia of the length direction of beam barrel and to refer to referring to a butt handle that than this forward quadrate part of butt handle is provided with handle part, and butt handle between above-mentioned finger is configured to and can takes in respect to beam barrel.

2. the beam barrel with writing implement of auxiliary member as claimed in claim 1, the butt handle is configured to can move with respect to the length direction of beam barrel/fix between above-mentioned finger.

3. the beam barrel with writing implement of auxiliary member as claimed in claim 1 or 2, to be set to the vertical line with the axle center quadrature of the length direction of beam barrel be that rotation rotates freely to the butt handle between above-mentioned finger.

4. the beam barrel with writing implement of auxiliary member as claimed in claim 3, butt handle between above-mentioned finger is configured to can be with respect to the axle center of the length direction of beam barrel with fixed angle arbitrarily.

5. as claim 3 or 4 described beam barrels with writing implement of auxiliary member, making butt handle between above-mentioned finger is below above 90 degree of 30 degree with respect to the angle in the axle center of the length direction of beam barrel.

6. the beam barrel with writing implement of auxiliary member as claimed in claim 1 is configured to butt handle between above-mentioned finger and beam barrel can rotate with respect to the axle center of length direction is relative.

7. the beam barrel with writing implement of auxiliary member as claimed in claim 6 applies rotational resistance for butt handle between above-mentioned finger with the relative rotation of beam barrel.

8. the beam barrel with writing implement of auxiliary member as claimed in claim 7 makes above-mentioned rotational resistance change corresponding to writing pressure.

9. the beam barrel with writing implement of auxiliary member as claimed in claim 1 is to above-mentioned handle part or refer to that at least one of butt handle gives skid resistance.

10. beam barrel with writing implement of auxiliary member, in the beam barrel of writing implement, form at the pars intermedia of the length direction of beam barrel and to refer to a butt handle, referring to that than this forward quadrate part of butt handle is provided with handle part, and the butt handle is configured to and can takes in respect to beam barrel between above-mentioned finger, this take in be refer between the butt handle to be set to the vertical line with the axle center quadrature of the length direction of beam barrel be that rotation rotates freely, and the butt handle is configured to can move with respect to the length direction of beam barrel/fix between will referring to.

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