Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
  • B43K—IMPLEMENTS FOR WRITING OR DRAWING
  • B43K24/00—Mechanisms for selecting, projecting, retracting or locking writing units
  • B43K24/02—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions
  • B43K24/06—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by turning means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
  • B43K—IMPLEMENTS FOR WRITING OR DRAWING
  • B43K24/00—Mechanisms for selecting, projecting, retracting or locking writing units
  • B43K24/02—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions
  • B43K24/026—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions with a sleeve sliding on the forward end of the lead

Definitions

• the present invention relates to a writing instrument, and more particularly to a rotary pay-out writing instrument capable of retracting a base and a writing core member.
• the writing core member can be stored in the writing instrument body when not writing, even when the writing instrument is carried in a pocket of clothing or the like, the clothing is linked. It can be carried without getting dirty.
• Patent Document 1 Actual Fairness 7-32133
• the writing instrument according to the conventional example has the following configuration.
• the rear outer cylinder is moved with respect to the front outer cylinder.
• the convex portion of the outer peripheral surface of the inner sleeve unit advances along the thread groove on the inner peripheral surface of the feed pipe constituting the intermediate sleeve unit, and the base protrudes.
• the convex portion of the inner sleeve unit is in a position where the front end force of the thread groove is also pushed out.
• the projection of the connecting member engages with the rearmost end of the thread groove on the inner peripheral surface of the feeding pipe. Thereby, when it is further rotated, the projection of the connecting member advances along the screw groove, and the writing core member protrudes.
• the convex portion of the inner sleeve unit is also pushed out by the thread groove force, and in the state before the projection of the connecting member engages the thread groove,
• the positions of the inner sleeve unit and the connecting member in the axial direction are regulated by a compression coil spring that biases the convex portion of the inner sleeve unit in the rear end direction and a compression coil spring that biases the connecting member in the rear end direction. It will be.
• the present invention has been made in view of such problems, and the object of the present invention is to have a simpler configuration and to smoothly connect the base and the writing core member continuously.
• the object of the present invention is to provide a rotary pay-out writing instrument that can appear and disappear.
• the present invention has achieved the above object with the following technical configuration.
• a cylindrical rear outer cylinder having an open front end surface, an inner sheath that is non-rotatably accommodated with respect to the rear outer cylinder, and a cylindrical shape having an open front and rear end surface that is open from the front end surface opening to the base.
• the inner sheath is provided with a rotation range regulating protrusion on the front end surface, and a refill sliding cam and a base sliding cam on the inner peripheral surface
• the refill sliding body and the base sliding body are accommodated in the inner sheath so as to be slidable in the axial direction and non-movable in the radial direction.
• the refill sliding body and the base sliding body are In addition, sliding protrusions are formed on the outer surfaces, respectively, and the sliding protrusions engage with the refill sliding cam and the base sliding cam, respectively, and the base sliding body is in contact with the refill sliding body.
• a slidable and non-rotatably coupled member is connected to the inner sheath, and a connecting member is connected to the inner sheath so as to be rotatable and non-movable in the axial direction. And the rotational position restricting member rotates the inner sheath.
• a rotating feeding type writing instrument having a configuration in which the base sliding body is slidably engaged with the connecting body, and the rear outer cylinder rotates in one direction with respect to the connecting body.
• the inner sheath rotates together with the rear outer cylinder in the same direction, whereby the base and the writing core member are propelled toward the front end to reach a position protruding from the opening of the front outer cylinder.
• Rotating and feeding type characterized in that when further rotated in the same direction, the writing core member is propelled in the front end direction and the tip of the writing core member reaches a position protruding from the opening on the front end surface of the base.
• the connecting member that connects the rear outer cylinder and the front outer cylinder has a flange-shaped large-diameter portion at the center. A rear end surface of the large-diameter portion is in sliding contact with a front end surface of the rear outer cylinder, the front outer cylinder is detachably connected, and the connecting member is detachably connected to the connector.
• Rotating payout type writing instrument characterized by
• the refill sliding cam and the base sliding cam are arranged with respect to the axial center starting from an arbitrary position. 1 has a first inclined portion, and in a second range following the first range, the reference sliding cam has a vertical portion, and the base sliding cam has a sliding body locking recess, In the following third range, the refill sliding cam has a second inclined portion, and the base sliding cam has a vertical portion, and in the following fourth range, the refill sliding cam is a sliding body locking concave portion. In the following fifth range, the refill sliding cam and the base sliding slide A rotation feeding type writing instrument, wherein the cam has a rotation restricting protrusion.
• the coupling body includes a resistance member on an outer surface thereof, and the resistance member is in sliding contact with the rear outer cylinder.
• a rotary pay-out writing instrument characterized by being arranged in
• FIG. 2 Schematic cross-sectional view of the rear outer cylinder
• FIG. 4 (a) and (b) are diagrams explaining the inner sheath.
• FIG. 8] (a) to (f) are explanatory diagrams of the refill sliding body.
• FIG. 13 (a) and (b) are illustrations of the inner trunk.
• FIG. 17 (a) 3 ⁇ 4V, and (c) are illustrations of the operation of the writing instrument.
• FIG. 1 is a schematic cross-sectional view of the assembled state of all the parts of the rotary payout writing instrument according to the present embodiment.
• the writing instrument 1 includes a rear outer cylinder 2, a crown screw 3 detachably attached to the rear outer cylinder 2, an inner sheath 4 accommodated in the rear outer cylinder 2, and an inner sheath 4 , A refill sliding body 6 and a base sliding body 7 slidably accommodated in the inner sheath 4, a connecting screw 8 as a connecting member slidably contacting the rear outer cylinder 2, and a connection Removably attached to screw 8 Connected body 9, front outer cylinder 10 composed of two members detachably attached to connection screw 8, inner cylinder 11 slidably accommodated in front outer cylinder 10, A base 12 mounted on the barrel 11, a writing core member 13 accommodated in the inner barrel 11 and the base sliding body 7, a space between the front outer cylinder 10 and the inner barrel 11, and a writing core member 13 And a return pan 14 disposed between the base 12 and the base 12.
• FIG. 2 is a schematic cross-sectional view of the rear outer cylinder 2.
• the rear outer cylinder 2 is a cylindrical member having an opening at the front and rear end faces having an opening 21 at the rear end face.
• a convex portion of a head crown screw 3 to be described later is inserted into the opening 21 on the rear end surface, and the rear edge of the head crown screw 3 is in sliding contact with the edge of the rear end surface of the rear outer cylinder 2.
• a configuration in which the head and crown screw 3 is not attached or detached is acceptable. In this case, no opening is provided in the rear end surface of the rear outer cylinder 2.
• FIG. 2 shows a configuration in which the clip member 22 is positioned on the rear end surface of the rear outer cylinder 2. In this configuration, the clip member 22 is sandwiched between the rear end surface of the rear outer tube 2 and the back surface edge of the crown screw 3.
• the inner side surface of the rear outer cylinder 2 is engaged with the outer side surface of the inner sheath 4.
• the front end surface of the rear outer cylinder 2 is in sliding contact with the rear end surface of a large-diameter portion of a connecting screw 8 described later.
• the inner side surface of the front end portion is in sliding contact with the outer side surface of the connecting body 9 described later, and the rear outer cylinder 2 and the inner sheath 4 are rotatable relative to the connecting body 9.
• FIG. 3 is a schematic cross-sectional view of the head crown screw 3.
• the crown screw 3 has a T-shaped cross section having a convex portion 31.
• the convex portion 31 is inserted into a rear end surface opening of the inner sheath 4 described later.
• a screw groove 33 is provided around the outer surface of the front end of the protrusion 31 and is screwed into a screw groove provided around the inner surface of the rear end of the nut 5 described later.
• the surface portion 32 of the crown screw 3 can be engraved or holographically attached. It is also possible to cover the surface portion 32 with a resin cover. Alternatively, the surface portion 32 may be provided with a protrusion having a stringing hole.
• FIG. 4 is an explanatory view of the inner sheath 4
• FIG. 4 (a) is a plan view
• FIG. 4 (b) is a schematic front sectional view of FIG. 4 (a).
• Fig. 5 is an explanatory diagram of the inner sheath 4 shown in Fig. 4.
• Fig. 5 (a) is a cross-sectional view taken along line A-A in Fig. 4 (b)
• Fig. 5 (b) is B-- in Fig. 4 (b).
• Fig. 5 (c) is CC line cross section of Fig. 4 (b)
• Fig. 5 (d) is an end view taken along the line D-D of Fig. 4 (b).
• the inner sheath 4 is a cylindrical member having open front and rear end faces.
• a rear end 41 is provided at the rear end.
• the cross-sectional shape of the rear end portion 41 is obtained by cutting a relative opposing surface of a circle into an arc shape and having a circular opening at the center.
• the rear end 41 protrudes from the opening 21 of the rear outer cylinder 2, and the outer surface is frictionally engaged or adhered and fixed to the inner surface of the rear outer cylinder 2.
• a groove is formed in the axial direction in the rear portion of the inner sheath 4.
• the convex portion 31 of the crown screw 3 is inserted into the opening portion of the rear end portion 41 protruding from the opening portion 21 of the rear outer cylinder 2.
• the inner surface of the rear end portion 41 and the base portion of the convex portion 31 are inserted. Are frictionally engaged. Further, the front end portion of the convex portion 31 is in a state of penetrating the rear end portion 41 of the inner sheath 4.
• a slit 44 is formed in the front portion of the inner sheath 4.
• the slit 44 accommodates a convex portion formed on the rear outer surface of the connecting body 9 described later.
• a rotation range regulating protrusion 45 is formed on the front end face.
• a refill sliding cam 42 is formed on the rear end side of the inner peripheral surface, and a cap sliding cam 43 is formed on the front end side of the inner peripheral surface.
• FIG. 6 is a developed view of the refill sliding cam 42 and the base sliding cam 43 formed on the inner surface of the inner sheath 4.
• both the reference sliding cam 42 and the base sliding cam 43 are inclined at an arbitrary angle with respect to the axial direction.
• the first inclined portions 61 and 62 are provided.
• the heights of the two inclined portions with respect to the axial direction are substantially the same.
• the refill sliding cam 42 is perpendicular to the axial direction at a position of ⁇ force ⁇ in the vicinity of 180 degrees.
• the base sliding cam has a sliding body locking concave part 64 at the position ⁇ to ⁇ .
• the refill sliding cam 42 is in the axial direction.
• the second inclined portion 65 inclined at an arbitrary angle, and the base sliding cam 43 at the position ⁇ is
• a sliding body locking recess 67 is provided. In the vicinity of 360 degrees, both the refill sliding cam 42 and the base sliding cam 43 have rotation restricting protrusions 68 and 69.
• the positional relationship between a and ⁇ is as follows.
• FIG. 7 is a schematic sectional view of the nut 5. As shown in FIG. 7, the nut 5 is a cylindrical member having open front and rear end faces.
• a screw groove 51 is provided around the inner surface of the rear end portion.
• the convex portion 31 of the crown screw 3 is inserted into the rear end portion 41 of the inner sheath 4, the distal end portion of the convex portion 31 penetrates the rear end portion 41 of the inner sheath 4, and the screw groove 33 of the convex portion 31 is formed. Screwed into the thread 51 of the nut 5.
• the nut 5 is detachably connected to the head crown screw 3, and the nut 5 and the head crown screw 3 sandwich the rear outer cylinder 2 and the inner sheath 4.
• the screw groove 33 of the head crown screw 3 and the screw groove 51 of the nut 5 are connected, the nut 5 and the head crown screw 3 cannot move relative to each other.
• the screw is loosened, the nut 5 and the head screw 3 is relatively rotatable.
• the rear portion of the outer side surface is in sliding contact with the inner side surface of the inner sheath 4.
• the outer surface of the nut 5 has substantially the same diameter as the inner surface of the refill sliding body 6 described later, and is in sliding contact with the inner surface of the refill sliding body 5.
• the force with the nut 5 as an independent member is not particularly limited to this.
• the nut 5 may be integrated with the inner sheath 4.
• FIG. 8 is an explanatory view of the refill sliding body 6.
• FIG. 8 (a) is a plan view
• FIG. 8 (b) is a partial front view of FIG. 8 (a)
• FIG. 8 (c) is FIG. 8A is a front sectional view
• FIG. 8D is a bottom view
• FIGS. 8E and 8F are left and right side views of FIG. 8A, respectively.
• the refill sliding body 6 is a cylindrical member having open front and rear end faces.
• the rear end surface of the refill sliding body 6 is locked to the inner sheath 4.
• the inner surface is in sliding contact with the outer surface of the nut 5, the outer surface is in sliding contact with the inner surface of the inner sheath 4, and the refill sliding body 6 is slidable in the axial direction and immovable in the radial direction. Supported by 4 and nut 5.
• the rear outer cylinder 2, the inner sheath 4, and the nut 5 are rotatable relative to the refill sliding body 6.
• a sliding projection 81 is formed on the outer surface of the refill sliding body 6 by force in the axial direction.
• the sliding projection 81 engages with the refill sliding cam 42 of the inner sheath 4. Further, the engaging projection 82 protrudes from the front end surface with a force in the axial direction.
• the engagement protrusion 82 includes an engagement protrusion 83 on its outer surface, and the engagement protrusion 82 and the engagement protrusion 83 are accommodated in a slit formed on the rear side surface of the base sliding body 7 described later.
• a restricting protrusion 84 is formed on the outer surface of the front portion, and the restricting protrusion 84 engages with a recess formed in the rear portion of the base sliding body 7.
• FIG. 9 is an explanatory view of the base sliding body 7
• FIG. 9 (a) is a plan view
• FIG. 9 (b) is a front sectional view of FIG. 9 (a)
• FIG. 9 (c) and (d ) Are left and right side end views of FIG. 9 (a).
• Fig. 10 is an explanatory view of the base sliding body 7 shown in Fig. 9.
• Fig. 10 (a) is an end view taken along the line A-A of Fig. 9 (b)
• Fig. 10 (b) is a diagram of Fig. 9 (b).
• Fig. 10 (c) is a cross-sectional end view taken along line CC of Fig. 9 (b).
• the base sliding body 7 is a cylindrical member having front and rear end faces opened.
• a sliding protrusion 91 is formed on the rear outer surface of the mouthpiece sliding body 7. The sliding projection 91 engages with a cap sliding cam 43 formed on the inner sheath 4.
• the base sliding body 7 has a slit 92 formed in the axial direction on the rear side surface.
• the slit 92 accommodates the engaging protrusion 82 and the engaging protrusion 83 of the refill sliding body 6.
• the refill sliding body 6 is connected to the base sliding body 7 so as to be slidable and non-rotatable.
• a regulation recess 93 is formed on the inner surface of the rear part of the base sliding body 7.
• the restricting convex portion 84 of the refill sliding body 6 engages with the restricting concave portion 93 so that the refill sliding body 6 is slidably and non-rotatably connected to the base sliding body 7.
• a guide portion 94 is formed on the outer surface within the range of the front end surface force of the sliding convex portion 91 up to the front end portion.
• the guide portion 94 is accommodated in a guide rail formed on the inner surface of the rear portion of the connecting body 9 described later.
• the front end surface of the base sliding body 7 locks the rear end surface of the inner cylinder 11 described later.
• FIG. 11 is an explanatory view of the connector 9, FIG. 11 (a) is a plan view, FIG. 11 (b) is a front sectional view of FIG. 11 (a), and FIG. 11 (c) is FIG. Fig. 11 (d) is a cross-sectional end view taken along the line B-B in Fig. 11 (b), and Fig. 11 (e) is a view taken along the line C-C in Fig. 11 (b). It is a section end view.
• the connecting body 9 is a cylindrical member having front and rear end faces opened.
• a convex portion 111 is formed on the rear outer surface.
• the convex portion 111 is accommodated in the slit 44 of the inner sheath 4, whereby the inner sheath 4 is connected to the connector 9 so as to be rotatable and not movable in the axial direction.
• a guide rail 112 is formed on the inner surface of the rear part.
• the guide rail 112 accommodates a guide portion 94 formed on the outer surface of the base sliding body 7 so that the base sliding body 7 is slidably and non-rotatably engaged with the connecting body 9.
• the outer surface of the base sliding body 7 is in sliding contact with the inner peripheral surface of the connecting body 9.
• a flange-shaped inner sheath locking portion 113 is provided on the outer side surface of the middle portion, and the front end surface of the rotation range restricting projection 45 of the inner sheath 4 is in sliding contact with the rear side surface of the inner sheath locking portion 113.
• An inner sheath locking portion 113 is also provided with a rotational position restricting member 114 in the backward direction. Further, a screw groove 115 is provided on the inner side surface of the front part, and is screwed into a screw groove provided on the outer side of the rear part of the connecting screw described later.
• the outer side surface of the coupling body 9 is in contact with the inner side surface of the inner sheath 4 on the outer side surface in the rear direction with respect to the inner sheath locking portion 113, and is in sliding contact with the inner side surface of the rear outer cylinder 2.
• the rear outer cylinder 2 and the inner sheath 4 can slide and rotate with respect to the connecting body 9.
• the rotation of the inner sheath 4 is restricted at a position where the rotation range restricting protrusion 45 of the inner sheath 4 engages with the rotation position restricting member 114.
• An O-ring housing groove 116 is provided around the outer surface of the connecting body 9.
• the O-ring housing groove 116 accommodates a rubber O-ring as a resistance member, and the outer surface of the O-ring is in sliding contact with the inner surface of the rear outer cylinder 2. With this configuration, friction is generated between the outer surface of the O-ring and the rear outer cylinder 2, and an appropriate resistance can be given to the rotation of the inner sheath 4 and the rear outer cylinder 2.
• the material of the O-ring is not particularly limited as long as it generates an appropriate resistance by friction with the rear outer cylinder 2. Further, the shape is not particularly limited to this.
• FIG. 12 is a schematic cross-sectional view of the connecting screw 8.
• the connecting screw 8 is a cylindrical member having an open front and rear end surface having a flange-shaped large-diameter portion 121 at the center.
• the outer surface of the large diameter part 121 forms the outer shape of the writing instrument 1 together with the front outer cylinder 10 and the rear outer cylinder 2 described later.
• the front side surface of the large diameter portion 121 is in sliding contact with the rear end surface of the front outer cylinder 10. Further, the rear side surface of the large diameter portion 121 is in sliding contact with the front end surface of the rear outer cylinder 2.
• a screw groove 122 is provided around the rear outer surface of the connecting screw 8, and is screwed into a screw groove 115 provided around the inner surface of the front portion of the connecting body 9.
• the connecting body 9 can be attached to and detached from the connecting screw 8.
• An inner cylinder receiving portion 123 is formed on the inner surface of the rear part, and a rear end surface of the inner cylinder 11 described later is locked.
• the inner surface of the connecting screw 8 is in sliding contact with the rear outer surface of the inner cylinder 11.
• a screw groove 124 is also provided around the front outer surface of the connecting screw 8, and the rear inner side of the front outer cylinder 10 to be described later is provided.
• FIG. 13 is an explanatory diagram of the inner cylinder 11
• FIG. 13 (a) is a sectional view in the axial direction
• FIG. 13 (b) is a sectional view taken along line AA in FIG. 13 (a).
• the inner cylinder 11 is a cylindrical member having front and rear end faces opened.
• the rear end surface of the inner cylinder 11 is locked by the inner cylinder receiving portion 123 of the connecting screw 8.
• the rear end surface is also locked by the front end surface of the base sliding body 7.
• protrusions 131 are formed at predetermined intervals in the axial direction on the inner surface of the rear part, and the protrusions 131 support the writing core member 13 so as to be slidable.
• a panel receiving seat 132 is formed on the outer surface of the rear portion, and the spring receiving seat 132 locks a rear end portion of a cap slide body return panel, which will be described later.
• a writing core member 13 is inserted into the inner cylinder 11. Further, the inner cylinder 11 is inserted into the front outer cylinder 10.
• a screw groove 133 is provided around the outer surface of the front part, and is screwed into a screw groove provided around the inner surface of the rear part of the base 12 described later.
• FIG. 14 is a schematic cross-sectional view of the base 12.
• the base 12 is a conical member having an open front and rear end face.
• a screw groove 141 is provided around the inner surface of the rear part, and screwed with a screw groove 133 provided around the front outer side surface of the inner cylinder 11.
• the base 12 is detachably connected to the inner cylinder 11. .
• a panel receiving seat 142 is formed on the inner side surface of the middle portion, and the spring receiving seat 142 locks a front end portion of a later-described reference sliding member return panel. From the opening 143 on the front end surface, the writing core member 13 can be projected and retracted.
• FIG. 15 is a schematic cross-sectional view of the front portion of the writing instrument 1.
• the front outer cylinder 10 is a cylindrical member having an open front and rear end face.
• the front outer cylinder 10 includes a front end cylinder part 151 and a grip part 152.
• the rear end surface of the distal end cylindrical portion 10 serves as a panel receiving seat 153, and engages the front end portion of a mouthpiece slide body return panel, which will be described later.
• the inner cylinder 11 and the base 12 are inserted into the distal end cylindrical portion 151.
• the opening force of the front end surface of the distal end cylindrical portion 151 allows the base 12 and the writing core member 13 to appear and retract.
• a screw groove 154 is provided around the inner surface of the rear part of the grip 152, and is engaged with a screw groove 124 provided on the outer front surface of the connection screw 8, so that the front outer cylinder 10 is connected to the connection screw 8. It is detachably connected to. In the connected state, the connecting screw 8 and the front outer cylinder 10 cannot be moved relative to each other. However, in a state where the screwing is loosened, the connecting screw 8 and the front outer cylinder 10 are relatively rotatable.
• the inner side surface of the grip portion 152 is frictionally engaged with the outer side surface of the tip tube portion 151!
• the grip portion 152 is formed of various materials.
• an elastic member such as rubber, wood, metal, or the like is used.
• the front outer cylinder 10 may be configured such that the front end cylinder part 151 and the grip part 152 are composed of a front end cylinder part 151 and a grip part 152.
• the return panel will be described with reference to FIG.
• the base slide return panel 155 is accommodated in the annular space between the inner peripheral surface of the grip portion 152 of the front outer cylinder 10 and the connecting screw 8 and the outer peripheral surface of the inner cylinder 11.
• the panel receiving seat 153 of the front end cylinder portion 151 and the panel receiving seat 132 of the inner trunk 11 are extended.
• a refill sliding body return panel 156 is accommodated in an annular space between the inner peripheral surface of the base 12 and the inner cylinder 11 and the outer peripheral surface of the writing core member 13, and a panel receiving seat 142 of the base 12 will be described later.
• the writing core member 13 extends between a panel receiving seat formed on the outer peripheral surface of the cartridge.
• the base slide body return panel 155 and the refill slide body return panel 156 are not particularly limited to the force using a coil spring, and may be other elastic members.
• FIG. 16 is a front view of the writing core member 13.
• the writing core member 13 is a conventionally known ball pen refill.
• the cartridge 161 accommodates the ink that is opened at the front and rear ends, the tail plug 162 that is inserted into the rear end, and the tip member (ball pen tip portion) 163 that is inserted into the front end.
• the rear outer surface of the writing core member 13 is clamped by the inner surface of the engaging protrusion 82 of the refill sliding body 6, and the rear end surface of the writing core member 13 is locked by the front end surface of the refill sliding body 6.
• a panel receiving seat 164 is formed on the front outer peripheral surface of the cartridge 161 of the writing core member 13, and the rear end portion of the refill sliding body return panel 156 is locked.
• the writing core member is a force that uses a ballpoint pen refill, and is not particularly limited to this.
• a conventionally known mechanical pencil mechanism may be used.
• FIG. 17 is an operation explanatory view of the writing instrument 1 according to the present embodiment
• FIG. 18 is a development view showing the relationship between the refill sliding cam 42, the cam 43 as well as the cap slide, and the rotation range regulating protrusion 45.
• the base 12 is in a position retracted backward from the front end opening of the front outer tube 10 as shown in FIG. 17 (a).
• the writing core member 13 is in a position retracted rearward from the opening 144 of the base 12.
• the base sliding body 7 is opposed to the biasing force of the base sliding body return panel 155 and the front end. Promote in the direction.
• the refill sliding body 6 is also propelled toward the front end against the urging force of the refill sliding body return panel 156.
• the refill sliding body 6 and the base sliding body 7 Slides forward approximately the same distance. Therefore, the relative positional relationship between the base 12 and the writing core member 13 hardly changes before and after sliding. As a result, the base sliding body 7 and the label The fill sliding body 6 reaches the position shown in FIG. 17 (b), and the cap 12 and the base 12 are opened from the front end opening of the front outer cylinder 10.
• the writing core member 13 protrudes.
• the refill sliding body reaches the position where the ball-point pen tip portion 163 of the writing core member 13 protrudes from the front end surface opening 143 of the base 12 as shown in FIG. 17 (c).
• the refill sliding cam 42 and the base sliding cam 43 have rotation restricting protrusions 68 and 69, whereby the sliding convex part 81 of the refill sliding body 6 and the sliding convex part of the base sliding body 7 are provided. Since 91 is locked, the rear outer cylinder 2 and inner sheath 4 cannot be rotated more than 270 degrees. In addition, since the rotation range restricting protrusion 45 of the inner sheath 4 engages with the rotation position restricting member 114 of the coupling body 9 at the position of 270 degrees of rotation, this also causes the rear outer cylinder 2 and the inner sheath 4 to Further rotation is restricted.
• the ball-point pen tip 163 and the base 12 of the writing core member 13 are housed in the writing instrument 1 main body, the rear outer cylinder 2 and the inner sheath 4 are rotated in the direction opposite to the aforementioned rotation. Accordingly, the base 12 and the writing core member 13 are accommodated in the main body of the writing instrument 1 in the reverse order of the above-described operation by the biasing force of the base sliding body return panel 155 and the refill sliding body return panel 156.
• the base 12 and the writing core member 13 may be housed in the main body of the writing instrument 1 by a mechanism that uses only the urging force of the return panel.
• a new writing core member 13 is inserted into the rear outer cylinder 2, and the rear end surface of the writing core member 13 is locked to the front end surface of the refill sliding body 6.
• the front outer cylinder 10 and the connecting screw 8 are attached, and the connecting screw 8 and the thread of the connecting body 9 are screwed together. With the above operation, the writing core member 13 can be replaced.

Landscapes

• Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=37668543

Family Applications (1)

Country Status (5)

Cited By (4)

Families Citing this family (11)

Citations (3)

Family Cites Families (7)

• 2006
  • 2006-04-21 US US10/589,510 patent/US7452149B2/en active Active
  • 2006-04-21 CN CNB200680002062XA patent/CN100469595C/zh not_active Expired - Lifetime
  • 2006-04-21 JP JP2007525905A patent/JP4599404B2/ja not_active Expired - Lifetime
  • 2006-04-21 WO PCT/JP2006/308428 patent/WO2007010656A1/ja not_active Ceased
  • 2006-05-25 TW TW095118608A patent/TW200706404A/zh unknown

Patent Citations (3)

Also Published As

Similar Documents

Legal Events