JP5339618B2 - Swing-out mechanical pencil - Google Patents

Description

  The present invention relates to a swing-out type mechanical pencil that advances a lead by a inertial force of a weight body generated by shaking a fastener that has a lead holding chuck that allows a lead in a forward direction but prevents it in a backward direction.

  Conventionally, a slider that frictionally holds the core is movably provided at the tip of the shaft tube, and a core chuck portion that holds the core is formed behind the slider so as to allow the core to advance but prevent retraction. In a writing instrument in which the lead is automatically extended when the tip of the writing is separated from the paper surface by urging the slider forward, a weight receiving part is formed so that the weight contacts the outer periphery of the lead tank part and the weight A function of a so-called automatic mechanical pencil in which the receiving part is urged forward and the lead is automatically drawn out when the writing tip is separated from the paper surface during writing, and the shaft cylinder (1) is shaken (28) ) Is moved in the axial direction, the weight (28) abuts against the rear end of the sleeve (26), and the chuck part (16) moves forward so as to feed out the lead so-called swing-out mechanical pencil. A writing instrument having a function is known. The slider (11) is urged forward by the slider spring (13), and a mechanism is provided to temporarily hold the slider (11) in the retracted position so that the slider protrudes to the advanced position and is not extended when carried. Yes. (See Patent Document 1)

  However, since the writing instrument described above temporarily holds the slider in the retracted position so that the lead is not drawn out, there is an advantage that there is no unnecessary lead-out, but knocking and picking up the lead There was a problem that it was impossible to pay out.

JP 2007-21843 A

  The problem to be solved is that in the swing-out mechanical pencil, unnecessary centering is performed when vibration occurs during carrying.

  The present invention includes a middle piece provided with a lead holder for lightly holding a lead, a lead guide configured at a front portion of the middle piece, a tip member incorporating the middle piece movably in the longitudinal direction, and a tip member at the front portion. A shaft cylinder attached to the core, a core holding chuck that is urged rearward in the longitudinal direction by a front spring to allow the core in the forward direction but block in the backward direction, and a ball provided in the core holding chuck is received by the tapered surface A fastener, a fastener that can be moved in the longitudinal direction as needed, and a connector that can move in the longitudinal direction in the tip member, and a slider that is slidable in the longitudinal direction in the tip member and abuts against the connector A front ring which can be engaged with the fastener, a connector which is connected to the connector so as to be movable in the longitudinal direction as appropriate, and the connector is attached rearward in the longitudinal direction with a stronger force than the front spring. Coil spring and connector A core tank connected to the weight tank and a weight body built in the longitudinal direction so as to be slidable in the longitudinal direction on the outside of the core tank, and forming a locking step on the tip member, and forming an elastic piece on the middle piece, The locking part formed on the elastic piece of the middle piece is configured to be able to engage with the locking step of the tip member, and further, the middle piece and the front ring are configured to be able to contact each other. By engaging with the locking step, the center piece abuts on the front ring, the front ring abuts on the coupling tool to prevent the coupling tool from moving, and the core holding chuck is interlocked with the clamp pressed by the connector. The first feature is that the core is advanced by moving forward while compressing the front spring.

  In addition, the middle piece provided with a lead holder that holds the lead lightly, the lead guide configured at the front part of the middle piece, the tip member incorporating the middle piece movably in the longitudinal direction, and the tip member attached to the front part A cylindrical cylinder, a core holding chuck that is urged backward in the longitudinal direction by a front spring to allow the core in the forward direction but prevent it in the backward direction, and a substantially hemispherical protrusion provided on the core holding chuck is tapered. A fastener that is received by a surface, a fastener that is movably incorporated in the longitudinal direction and that is movable in the longitudinal direction within the tip member, and a slidable member that is slidable in the longitudinal direction in the tip member A front ring that can be brought into contact with the fastener, a connector that has a front portion that can be engaged with the fastener, and is connected to the connector so as to be movable in the longitudinal direction as appropriate. A coil spring that biases backward, and a connector A core tank coupled to the outer core and a weight body slidable in the longitudinal direction on the outside of the core tank, forming a locking step on the tip member, and forming an elastic piece on the middle piece The locking part formed on the elastic piece of the middle piece is configured to be engageable with the locking step of the tip member, and further, the middle piece and the front ring are configured to be able to contact each other. By engaging with the locking step of the member, the center piece abuts on the front ring, the front ring abuts on the connection tool to prevent the connection tool from moving, and the core is held in conjunction with the clamp pressed by the connector. The second feature is that the chuck is advanced by moving forward while compressing the front spring.

  Furthermore, the third feature is that the front ring is connected to the front part of the connecting tool so as to be slidable in the longitudinal direction as appropriate.

  Furthermore, a front ring and a coupling tool are built in between the tip member and the shaft cylinder, and the coupling tool is configured to be slidable appropriately between the front ring and the shaft cylinder, and between the front ring and the coupling tool. A fourth feature is that the fastener is configured to be slidable as appropriate, and that the sliding distance of the fastener is greater than the sliding distance of the coupling tool.

  The swing-out mechanical pencil of the present invention allows the core to be drawn out by shaking very lightly, and when carrying, the middle piece is brought into contact with the front ring by engaging the locking portion of the middle piece with the locking step of the tip member. The front ring is brought into contact with the coupling tool to prevent the movement of the coupling tool to prevent the unnecessary lead from being pulled out when being carried. The effect that the feeding can be performed is achieved.

FIG. 1 is a cross-sectional view showing a swing-out mechanical pencil according to a first embodiment of the present invention. Example 1 FIG. 2 is an enlarged plan view of a main part showing a mechanism part in the swing-out mechanical pencil according to the first embodiment of the present invention. Example 1 FIG. 3 is an enlarged cross-sectional view of the main part showing the lead-out state in the swing-out mechanical pencil according to the first embodiment of the present invention. Example 1 FIG. 4 is an enlarged cross-sectional view of a main part showing a core following state in the swing-out mechanical pencil according to the first embodiment of the present invention. Example 1 FIG. 5 is an enlarged cross-sectional view of a main part showing a portable state in the swing-out mechanical pencil according to the first embodiment of the present invention. Example 1 FIG. 6 is an enlarged plan view of a main part showing a mechanism part in the swing-out mechanical pencil according to the second embodiment of the present invention. (Example 2) FIG. 7 is an enlarged cross-sectional view of a main part showing a mechanism part in the swing-out mechanical pencil according to the second embodiment of the present invention. (Example 2) FIG. 8 is an enlarged cross-sectional view of a main part showing a swing-out mechanical pencil according to a third embodiment of the present invention. (Example 3)

  We realized a swing-out mechanical pencil that can be pulled out just by shaking it lightly, and can prevent unnecessary lead from being pulled out even if vibration occurs when carrying it, but can be pulled out by knocking.

  Hereinafter, based on FIG.1, FIG.2, FIG.3, FIG.4 and FIG. 5, the swing-out type mechanical pencil of Example 1 in this invention is demonstrated. Moreover, let the left side of FIG. 1 be the front, and let the right side be back. First, the two half-divided pieces 1 </ b> A are combined to form a cylindrical core holding chuck 1, and a core holding portion 1 </ b> B having irregularities inside the core holding chuck 1 is formed. A recess 1C is formed on the outside of the core holding chuck 1, and the balls 2 are rotatably arranged in the recess 1C. The core holding chuck 1 is built in a fastener 3 having a tapered surface 3A. The fastener 3 is built in the connector 4 so as to be slidable in the longitudinal direction. The connector 4 forms two sliding windows 4A at the front portion at a relative position, and forms a locking groove 4B communicating with the sliding window 4A from the front end at the front portion of the sliding window 4A. Further, the front ring 5 is formed with two raised portions 5A extending rearward at a relative position, and the rear portion is formed with a locking portion 5B having a larger width. The front ring 5 is inserted from the front of the connector 4, the locking portion 5 B of the front ring 5 passes through the locking groove 4 B of the connector 4, and the locking portion 5 B of the front ring 5 is connected to the connector 4. Are inserted into the sliding window 4A. At this time, the locking portion 5B of the front ring 5 is configured to be slidable appropriately in the longitudinal direction in the sliding window 4A of the connector 4. A front spring 6 is stretched between the front inner stage 5C of the front ring 5 and the outer stage 1D of the core holding chuck 1 with a load of about 10 g. Therefore, the lead holding chuck 1 is pushed rearward in the longitudinal direction, the ball 2 is pushed against the tapered surface 3A of the fastener 3, and the lead holding chuck 1 is closed. At this time, the lead 7 held by the lead holding chuck 1 can move without resistance in the front in the longitudinal direction, but the wedge action acts between the fastener 3 and the ball 2 in the rear in the longitudinal direction and is held with a strong force. .

  An inner collar 4C is formed at the rear portion of the connector 4. Further, a locking bar 8A is formed on the peripheral surface of the connector 8, and the locking bar 8A is formed with a tapered front surface and a vertical rear surface. A front outer rod 8B positioned in front of the locking rod 8A of the connector 8 is divided into a plurality of grooves and is formed so as to be capable of friction fitting with the rear portion of the fastener 3.

  The front outer rod 8B and the locking rod 8A of the connector 8 are inserted from the rear of the connector 4, and the locking rod 8A is locked to the inner rod 4C of the connector 4, so that the connector 8 is prevented from coming off. The A coil spring 9 having a load of about 300 g is stretched between the rear outer stage 4D of the connector 4 and the outer stage 8C of the connector 8, and the locking rod 8A of the connector 8 is usually connected to the inner side of the connector 4. The connector 4 and the connector 8 are connected by being locked to the flange 4C. At this time, the front outer casing 8B of the connector 8 and the rear part of the fastener 3 are appropriately separated. Further, the tip of the metal guide pipe 10 fixed to the connector 8 is inserted into the rear part of the lead holding chuck 1, but the tip of the guide pipe 10 and the rear part of the lead holding chuck 1 are usually separated appropriately. ing. A core tank 11 made of a synthetic resin pipe is press-fitted and fixed to the rear portion of the connector 8, and a spare core 7 is stored in the core tank 11. As described above, the front ring 5, the coupling tool 4, the fastener 3, the front spring 6, the core holding chuck 1, the ball 2, the connector 8, the coil spring 9, the guide pipe 10, and the core tank 11 constitute a mechanism. In this state, there is no fear that the parts of the mechanism part come off and fall apart.

  The mechanism portion is inserted from the front of the shaft cylinder 12. Further, the outer part of the rear part of the middle piece 14 containing the rubber core holder 13 is divided into a plurality of elastic pieces 14A, and the locking protrusions 14B are formed on the outer part of the rear part of the elastic piece 14A. A lead guide 15 made of stainless steel pipe is press-fitted and fixed to the front portion of the middle piece 14. The middle piece 14 is built in the tip member 16 so as to be slidable in the longitudinal direction, and the lead guide 15 is projected from the tip of the tip member 16. At this time, the locking projection 14 </ b> B of the middle piece 14 is in frictional contact with the inner surface of the tip member 16. The front member 5 is detachably screwed to the front portion of the shaft cylinder 12 so that the front ring 5 is brought into contact with the locking step 16A of the front member 16 and the outer stage 4E of the connector 4 is attached to the front end of the shaft cylinder 12. The front ring 5 and the connector 4 are attached to be slidable in the longitudinal direction as appropriate. The moving distance of the fastener 3 relative to the front ring 5 is set longer than the moving distance of the connector 4 relative to the front ring 5. The lead holder 13 holds the lead 7 with a frictional force of about 20 g. This frictional force is set to be smaller than the frictional force with which the locking projection 14B of the intermediate piece 14 comes into frictional contact with the inner surface of the tip member 16. The

  A rubber grip 17 is attached to the shaft cylinder 12, and a cylindrical weight body 18 is slidably fitted to the core tank 11 from the rear of the shaft cylinder 12.

  A locking window 19B is formed so as to be opposed to the rear cylinder portion 19A of the core 19 in the vertical direction. Further, the front projection 20B is formed so as to be opposed to the front cylindrical portion 20A of the pressing member 20 in the vertical direction, and the opening portion 20C is formed on both sides of the front cylindrical portion 20A, and the front projection is formed with the locking projection 20B. The cylindrical portion 20A is configured to be elastically deformable. An outer stage 20D is formed at the rear portion of the pressing member 20, and keys 20E protruding outward are formed on the upper and lower sides of the outer stage 20D. The core 19 is inserted from the front of the sheath 22 integrally formed with the clip 21, and the pressing member 20 is inserted from the rear of the sheath 22 by aligning the key 20E of the pressing member 20 with the key groove 22A of the sheath 22. The locking projection 20B of the pressing member 20 is locked to the locking window 19B of the child 19, and the core 19 and the pressing member 20 are connected. Further, the return spring 23 is stretched between the inner flange 22B of the sheath 22 and the outer stage 20D of the pressing member 20 with a load of about 400 g. Accordingly, the pressing member 20 and the core 19 are urged rearward in the longitudinal direction, and the core 19 is brought into contact with the inner collar 22 </ b> B of the sheath 22. Further, an eraser 24 is attached to the inside of the rear portion of the pressing member 20 and a knob 25 covering the eraser 24 is detachably attached.

  The sheath 22 is detachably screwed to the rear portion of the shaft cylinder 12, the rear portion of the core tank 11 is inserted into the front inner hole 19 </ b> C of the core 19, and the rear end of the core tank 11 and the inner collar of the core 19 are inserted. 19D is configured to be appropriately separated. The weight body 18 fitted on the core tank 11 is configured to be slidable between the rear end of the connector 8 and the front end of the core 19. Further, the inner hole formed in the inner collar 19D of the core 19 and the inner hole of the pressing member 20 are configured to penetrate from the rear end of the core tank 11, and if the knob 25 and the eraser 24 are removed, the pressing member 20 is removed. The core 7 can be replenished from behind.

  Next, when writing is performed and the core 7 is consumed, the weight body 18 slides in the longitudinal direction by shaking the shaft cylinder 12, and when the weight body 18 comes into contact with the connector 8, it is connected via the coil spring 9. The tool 4 is pushed and the front spring 6 is compressed by the inertial force of the weight body 18. Then, the fastener 3 and the core holding chuck 1 move forward together with the connector 4. The lead 7 held by the lead holding chuck 1 also slides forward in the lead holder 13. At this time, the load at the time of mounting the front spring 6 is about 10 g, the core holding force by the core holder 13 is about 20 g, and even if combined, the core 7 can be drawn out with a very small force of about 30 g. The lead 7 can be fed out.

  Then, when the rear end edge 4F formed on the sliding window 4A of the connector 4 comes into contact with the locking portion 5B of the front ring 5, the advancement of the connector 4 is stopped and the state shown in FIG. Then, the connector 4, the fastener 3, and the core holding chuck 1 urged rearward by the front spring 6 are retracted. At this time, since the lead 7 can move in the forward direction without resistance in the lead holding chuck 1, even if the lead holding chuck 1 moves backward, the lead 7 is held by the lead holder 13, and the middle piece in which the lead holder 13 is incorporated. 14, the engaging projection 14B is in frictional contact with the inner surface of the tip member 16 with a force stronger than the core holding force of the core holder 13, so that the core 7 does not move backward. Accordingly, the core 7 is fed out by the distance that the connector 4 has advanced.

  Further, when the lead 7 in use is shortened and the next lead 7 is made to follow, the knob 25 is pressed to advance the lead tank 11. Then, the connecting tool 4 first moves forward, the rear end edge 4F formed on the sliding window 4A of the connecting tool 4 comes into contact with the locking portion 5B of the front ring 5, and the connecting tool 4 stops. When the knob 25 is further pressed, the coil spring 9 is compressed to advance the lead tank 11 and the connector 8, and the front outer casing 8 </ b> B divided into several parts of the connector 8 is pressed against the fastener 3. Therefore, the fastener 3 moves forward together with the connector 8, and the front end of the fastener 3 comes into contact with the front ring 5. When the connector 8 further advances, the front outer flange 8B of the connector 8 advances while frictionally engaging the inner surface of the fastener 3. When the guide pipe 10 comes into contact with the lead holding chuck 1, the lead holding chuck 1 is expanded while being advanced to the state shown in FIG. 4. When the lead holding chuck 1 is opened, the lead 7 in the lead tank 11 passes through the guide pipe 10 and follows the lead holding chuck 1 and comes into contact with the rear end of the shortened lead 7.

  Next, when the pressing of the knob 25 is released, the connector 8 is retracted by the coil spring 9. At this time, since the front outer flange 8B of the connector 8 is frictionally engaged with the inner surface of the fastener 3, the fastener 3 is also retracted, but the core holding chuck 1 pushed by the guide pipe 10 is open. Therefore, the core 7 that has been followed in the core holding chuck 1 does not retract. Then, when the outer stage 3B of the fastener 3 comes into contact with the inner stage 4G of the connector 4, the fastener 3 is stopped, but the connector 8 is further retracted, and the front outer casing of the connector 8 from the inner surface of the fastener 3. The guide pipe 10 that has pushed the lead holding chuck 1 is separated from the lead holding chuck 1 as 8B comes off. Then, the lead holding chuck 1 is closed and the connector 4 is retracted, and the outer stage 4E of the connector 4 is brought into contact with the front end of the shaft tube 12. When this operation is repeated once or twice, the short lead 7 held in the lead holder 13 is pushed and ejected by the next lead 7, and the next lead 7 is pushed into the lead holder 13 and shown in FIG. It returns to the state and normal writing can be performed.

  In the case of carrying, the knob 25 is first pressed to expand the core holding chuck 1, and in this state, the tip of the core guide 15 is pressed back with a paper or the like so that the locking projection of the intermediate piece 14 is moved. 14B is engaged with the locking step 16A of the tip member 16. At this time, the rear end of the locking projection 14B of the intermediate piece 14 comes into contact with the front end of the front ring 5, and the front ring 5 is moved backward to form the rear end of the raised portion 5A on the sliding window 4A of the connector 4. 5 is brought into contact with the rear end edge 4F to be in the state shown in FIG. Therefore, the connector 4 cannot move in the longitudinal direction. In this state, when vibration occurs during carrying, the weight body 18 slides and contacts the connector 8. Then, a forward pressing force is applied to the connector 4 via the coil spring 9, but the connector 4 is received by the front ring 5 and therefore does not move forward. Then, the inertial force of the weight body 18 tries to compress the coil spring 9, but the pressing force sufficient to compress the coil spring 9 having a load of about 300 g is not generated, so the core 7 is not drawn out. However, when the knob 25 is manually pressed, the coil spring 9 and the return spring 23 are compressed, the lead tank 11 and the connector 8 advance, and the front outer flange 8B of the connector 8 presses the fastener 3. Move forward. Accordingly, the core 7 is fed out by the distance traveled by the fastener 3 in the same manner as in the case of causing the core 7 to follow. Therefore, the center feeding by knocking can be performed even in the state where the center feeding by swinging is prevented.

  Next, when returning to the writing state, the knob 25 is strongly pressed to advance the lead holding chuck 1, the lead holding chuck 1 is brought into contact with the middle piece 14, and the middle piece 14 is advanced to engage the middle piece 14. The stop projection 14B comes off the locking step 16A of the tip member 16 and returns to the writing state shown in FIG.

  Hereinafter, based on FIG.6 and FIG.7, the swing-out type mechanical pencil of Example 2 in this invention is demonstrated. In addition, the same member as FIG. 1 attaches | subjects the same code | symbol, and abbreviate | omits the description. Two sliding windows 104H are formed at the relative positions in the front part of the connecting member 104 in which the fastener 3 is slidably incorporated in the longitudinal direction. The front ring 105 is formed with a locking portion 105B protruding from the peripheral surface of the tube portion, and an outer collar 105D is formed at the front end of the tube portion. The front ring 105 is inserted from the front of the connector 104, and the locking portion 105B of the front ring 105 is bent and inserted into the sliding window 104H of the connector 104. At this time, the locking portion 105B of the front ring 105 is configured to be appropriately slidable in the longitudinal direction in the sliding window 104H of the connector 104. A front spring 6 is stretched between the front inner stage 105C of the front ring 105 and the outer stage 1D of the core holding chuck 1 with a load of about 10 g. Even in this mechanism portion, there is no possibility that the parts may come off and fall apart.

  In the case of the second embodiment, the advancement of the connector 104 is stopped when the front end of the connector 104 is brought into contact with the outer rod 105D of the front ring 105. Further, the forward movement of the fastener 3 is stopped when the front end of the fastener 3 is brought into contact with the front ring 105. Also in this case, the moving distance of the fastener 3 with respect to the front ring 105 is set longer than the moving distance of the connector 104 with respect to the front ring 105.

  Hereinafter, the swing-out mechanical pencil according to the third embodiment of the present invention will be described with reference to FIG. In addition, the same member as FIG. 1 attaches | subjects the same code | symbol, and abbreviate | omits the description. A substantially hemispherical protrusion 101E is formed on a piece 101A of the core holding chuck 101, this protrusion 101E is pressed against the tapered surface 3A of the fastener 3 by the front spring 6, and the core holding chuck 101 is closed. . At this time, the lead 7 held by the lead holding chuck 101 can move without resistance forward in the longitudinal direction, but wedges between the tapered surface 3A of the fastener 3 and the protrusion 101E of the lead holding chuck 101 in the rear in the longitudinal direction. The action works and is held with strong force.

  In addition, this invention is not limited to the said Example, A core guide and a center piece can also be comprised by integral molding, and a center piece and a core holder can also be comprised integrally. Furthermore, the shaft tube and the sheath may be configured integrally. Further, the members such as the shaft tube, the sheath, the core tank, and the pressing member may be integrated by screwing and fitting two or more parts.

  It can be applied to a swing-out type mechanical pencil that can pull out the core just by shaking lightly and prevent unnecessary centering when carrying it.

DESCRIPTION OF SYMBOLS 1 Core holding chuck 2 Ball 3 Fastener 3A Tapered surface of fastener 3 4 Connection tool 5 Front ring 6 Front spring 7 Core 8 Connector 9 Coil spring 11 Core tank 12 Shaft cylinder 13 Core holder 14 Medium piece 14A Elasticity of medium piece 14 Piece 15 Core guide 101 Core holding chuck 104 Connector 105 Front ring

Claims (4)

  A center piece provided with a lead holder that holds the lead lightly, a lead guide configured at the front part of the middle piece, a tip member incorporating the center piece so as to be movable in the longitudinal direction, and a shaft with the tip member attached to the front part A cylinder, a core holding chuck that is urged rearward in the longitudinal direction by the front spring to allow the core in the forward direction but prevent it in the backward direction, and a clamp that receives the ball provided on the core holding chuck with a tapered surface, A fastener that incorporates a fastener so as to be movable in the longitudinal direction and is movable in the longitudinal direction within the tip member, and a front ring that is slidably housed in the tip member in the longitudinal direction and that can contact the connector. And a connector having a front part engageable with the fastener and connected to the connector so as to be appropriately movable in the longitudinal direction, and a coil spring for biasing the connector rearward in the longitudinal direction with a stronger force than the front spring And connected to the connector A lead tank and a weight body built in the outer side of the lead tank so as to be slidable in the longitudinal direction, forming a locking step on the tip member, and forming an elastic piece on the middle piece, The locking part formed on the piece is configured to be engageable with the locking step of the tip member, and the center piece and the front ring are configured to contact each other. By engaging with the step, the center piece abuts the front ring, the front ring abuts the coupling tool to prevent the coupling tool from moving, and the core holding chuck is linked to the clamp pressed by the connector to move the front spring. A swing-out mechanical pencil characterized in that the lead is extended by advancing while compressing.   A center piece provided with a lead holder that holds the lead lightly, a lead guide configured at the front part of the middle piece, a tip member incorporating the center piece so as to be movable in the longitudinal direction, and a shaft with the tip member attached to the front part A cylinder, a core holding chuck that is urged rearward in the longitudinal direction by a front spring to allow the core in the forward direction but prevent it in the backward direction, and a substantially hemispherical protrusion provided on the core holding chuck by a tapered surface A clamp that can be received, a coupler that can be moved in the longitudinal direction as needed, and a coupler that can move in the longitudinal direction in the tip member; and a coupler that is slidable in the longitudinal direction in the tip member; A front ring capable of abutting, a connector having a front portion engageable with the fastener, and connected to the connector so as to be appropriately movable in the longitudinal direction; and a connector rearward in the longitudinal direction with a stronger force than the front spring A coil spring that biases the And a weight body built in the outer side of the lead tank so as to be slidable in the longitudinal direction, and a locking step is formed on the tip member and an elastic piece is formed on the middle piece. The locking part formed on the elastic piece of the middle piece is configured to be engageable with the locking step of the tip member, and further, the middle piece and the front ring are configured to be able to contact each other. By engaging with the locking step of the member, the center piece abuts on the front ring, the front ring abuts on the connection tool to prevent the connection tool from moving, and the core is held in conjunction with the clamp pressed by the connector. A swing-out mechanical pencil characterized in that the chuck moves forward while compressing the front spring.   The swing-out mechanical pencil according to claim 1 or 2, wherein a front ring is connected to the front portion of the connecting tool so as to be slidable in the longitudinal direction as appropriate.   A front ring and a coupling tool are built in between the tip member and the shaft cylinder, and the coupling tool is configured to be appropriately slidable between the front ring and the shaft cylinder, and a fastener is interposed between the front ring and the coupling tool. The swing-out mechanical pencil according to any one of claims 1 to 3, wherein the swing-type mechanical pencil is configured so as to be slidable as appropriate, and further configured so that the sliding distance of the fastener is larger than the sliding distance of the coupling tool.

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