JP2018103423A - Long object feeding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a long object feeding device easier to use than the conventional ones.SOLUTION: The long object feeding device in one embodiment of this invention includes a long object with a recess extending substantially along the long direction on at least one plane extending along the long direction, a long containing case which houses the long object so as to be delivered from an opening formed on one end, and a holder holding the long object that is formed inside the case and movable along the long direction. At least one plane extending along the long direction of the long object substantially comes near or in touch with the inside peripheral wall of the long case along the long direction, and the recess of the long object substantially does not come near or in touch with the inside peripheral wall of the long case along the long direction.SELECTED DRAWING: Figure 2

Description

  Embodiments of the present invention relate to a long object feeding device capable of feeding out a long object such as an eraser and a color core.

  Conventionally, as this type of apparatus, for example, the apparatus disclosed in Patent Document 1 below is known. The long object feeding device includes a holder inserted so as to be movable in a longitudinal direction in a long case in which a guide groove is formed. The holder includes a holding unit for holding the long object. An operating portion exposed outward from the guide groove is provided. The user moves the holder in an arbitrary direction to slide by sliding the operation part of the holder in the longitudinal direction of the case along the longitudinal direction, and feeds the long object forward or accommodates it in the case. Can do.

JP 2000-141989 (see, for example, paragraphs 0008-0009)

  In the conventional long object feeding device, if the long object has a predetermined elasticity and is elastically deformed, when the long object is fed, the long object is pressed from the rear by the holding unit. There is a problem that the elastic resistance is deformed, and the side surface of the long object comes into contact with the inner peripheral wall of the case, and the sliding resistance when the long object is drawn out increases. In order to reduce the sliding resistance when paying out the long object, the inner peripheral wall of the long case is separated from the side surface of the long object with a predetermined interval except for the opening at the tip. Was formed to be.

  On the other hand, when there is a predetermined distance between the inner peripheral wall of the long case and the side surface of the long object, the long object is placed in the case when the long object is used while being extended from the case. In some cases, it may move in a direction perpendicular to the axial direction. In this case, it has been difficult to further improve the operability of the long object fed from the long object feeding device. Therefore, there is provided an easy-to-use long object feeding device that reduces the sliding resistance when feeding a long object and reduces the movement of the long object in the direction perpendicular to the axial direction during use. It was requested.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a long object feeding device that is easier to use than the conventional one.

  In order to solve the above-described problems, in the long object feeding device according to one aspect of the present invention, a recess extending substantially in the longitudinal direction is formed in at least one plane extending in the longitudinal direction. A long case that accommodates the long object so that the long object can be drawn out from an opening formed at one end thereof, and is configured to be movable in the longitudinal direction within the case, and holds the long object And at least one plane extending in the longitudinal direction of the elongate object is substantially close to or in contact with the inner peripheral wall of the elongate case over the longitudinal direction. The concave portion does not substantially approach or come into contact with the inner peripheral wall of the elongated case over the longitudinal direction.

  According to the aspect of the present invention, it is possible to provide a long object feeding device that is easier to use than the conventional one.

FIG. 1 is a plan view showing a long object feeding device according to the present embodiment. FIG. 2 is a cross-sectional view of the long object feeding device according to the present embodiment, cut along line AA in FIG. 1 and viewed from the side surface direction (AA arrow direction in FIG. 1). FIG. 3 is a plan view showing the eraser provided in the long object feeding device according to the present embodiment. FIG. 4 is a diagram showing the eraser of the present embodiment as viewed from the direction of the tip. FIG. 5 is a plan view showing a case provided in the long object feeding device according to the present embodiment. FIG. 6 is a side view showing the case of the present embodiment as seen from the side. FIG. 7 is a cross-sectional view showing the case of the present embodiment taken along the line BB in FIG. 5 and viewed from the side direction (the arrow direction BB in FIG. 5). FIG. 8 is a view showing the case of the present embodiment as viewed from the direction of the opening formed at the tip thereof. FIG. 9 is a plan view showing a holder provided in the long object feeding device according to the present embodiment. FIG. 10 is a side view showing the holder of the present embodiment as seen from the side.

  Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. In one embodiment, a description will be given by taking as an example a long object feeding device provided with a plastic eraser which is a kind of eraser as a long object. In addition, in this specification and drawing, about the component which has the substantially the same function, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  FIG. 1 is a plan view showing a long object feeding apparatus according to the present embodiment, and FIG. 2 is a side view of the long object feeding apparatus according to the present embodiment cut along line AA in FIG. 2 is a cross-sectional view seen from the direction (AA arrow direction in FIG. 1). As shown in FIG. 1 and FIG. 2, the long object feeding device 1 according to the present embodiment includes a long (long shape) eraser 10 and a long case that accommodates the eraser 10. 20, a holder 30 configured to be movable in the longitudinal direction of the case 20 and holding the eraser 10, and a cap 40 that closes the rear end of the case 20. “Long” means longer in the longitudinal direction than in the lateral direction. Long objects usually have elasticity that can be deformed in a direction perpendicular to the longitudinal direction. In FIG. 2, only the case 20 is shown in cross section, and the eraser 10 and the holder 30 are shown with side surfaces. Hereinafter, the eraser 10, the case 20, and the holder 30 will be described in detail.

(Eraser 10)
FIG. 3 is a plan view showing the eraser provided in the long object feeding device according to the present embodiment, and FIG. 4 is a view showing the eraser of the present embodiment as viewed from the end. . As shown in FIG. 3 and FIG. 4, the eraser 10 is formed in a substantially quadrangular prism shape and extends in the longitudinal direction on each surface (upper surface, lower surface, and both side surfaces) extending in the longitudinal direction. The recesses 12 are formed so as to exist. Each plane is substantially orthogonal to each other. By forming each surface and the recess 12 in this manner, the four corners of the cross section in the direction orthogonal to the longitudinal direction (axial direction) of the eraser 10 have three corners and protrude in the diagonal direction. Convex portions (rectangular protrusions 14) are formed respectively. The eraser 10 can be manufactured, for example, by extrusion in the longitudinal direction.

  As will be described in detail later, while the side surface of the prismatic protrusion 14 is close to or in contact with the inner peripheral wall of the case 20, the recess 12 is not close to or in contact with the inner peripheral wall of the case 20 except for the opening 22 at the tip. . For this reason, while reducing the sliding resistance at the time of unwinding the long object 10 from the case 20, the movement to the direction orthogonal to the axial direction of the long object 10 at the time of use was reduced, and it is an easy-to-use long object The feeding device 1 can be provided. Further, the prismatic protrusion 14 has a plurality of ridge lines extending in the axial direction, and the ridge lines can be erased by contacting the paper surface with a relatively narrow contact range and a relatively high contact pressure. For this reason, high quality erasing can be easily performed. Note that the ridge line portion extending in the axial direction corresponds to a corner portion in a cross-sectional shape in a direction orthogonal to the axial direction. The corners of the eraser 10 can include natural roundness that occurs during molding, and the corners of the eraser 10 need only be substantially formed as corners.

(Case 20)
FIG. 5 is a plan view showing a case provided in the long object feeding device according to the present embodiment, and FIG. 6 is a side view showing the case of the present embodiment as viewed from the side. FIG. 7 is a cross-sectional view showing the case of the present embodiment taken along the line BB in FIG. 5 and viewed from the side direction (the arrow direction of BB in FIG. 5). It is a figure which shows the case of embodiment seen from the direction of the opening formed in the front-end | tip part.

  As shown in FIGS. 5 to 8, the case 20 is formed in a substantially rectangular tube shape that matches the shape of the outer surface of the prismatic protrusion 14 of the eraser 10. An opening 22 is formed at the front end portion of the case 20 shown on the left side of FIGS. 5 to 7, and an opening 24 is formed at the rear end portion shown on the right side of FIGS. 5 to 7. Each of the erasers 10 can be inserted. Non-slip irregularities are formed on the front side surface of the case 20, and the outer periphery of the rear end portion is formed small so that it can be fitted into the cap 40 (see FIGS. 1 and 2). As appropriate, the front end side of the case 20 in which the opening 22 is formed is the front in the central axis direction (axial direction) of the long object feeding device 1 according to the present embodiment, and the rear end side in which the opening 24 is formed is the rear. Will be described below.

  Guide grooves 26 extending along the longitudinal direction are formed on the upper surface of the case 20, and the guide grooves 26 are alternately provided with locking holes 262 having a wide groove width and non-locking holes 264 having a narrow groove width. It is formed continuously. The direction of the groove width (direction orthogonal to the axial direction in the plan view) will be referred to as the width direction as appropriate and will be described below. The front end of the guide groove 26 does not reach the opening 22, and the rear end reaches the opening 24.

  As shown in FIG. 8, each of the inner peripheral walls of the case 20 that defines the opening 22 (and its edge) is formed with a convex portion 28 that protrudes toward the central axis of the case 20. The shape of the convex portion 28 is formed to correspond to the shape of the concave portion 12 of the eraser 10 and is formed so as to be close to the concave portion 12 with a slight gap. Since the eraser 10 is deformed in the direction perpendicular to the axial direction when it is used, the convex portion 28 is exceptionally formed close to the concave portion 12 in the opening 22 of the case 20. When the eraser 10 is used, the eraser 10 is elastically deformed in a direction perpendicular to the axial direction, but the convex portion 28 comes into contact with the concave portion 12 of the eraser 10 to suppress further deformation of the eraser 10.

  In the present embodiment, the recess 12 is formed in the center of each surface extending in the longitudinal direction of the eraser 10. In this case, the contact area of the eraser 10 with respect to the case 20 is maintained while effectively maintaining the sectional moment of inertia of the eraser 10 in an arbitrary direction perpendicular to the axial direction of the eraser 10. Can be reduced. For this reason, the sliding resistance between the eraser 10 and the case 20 when the eraser 10 is fed out can be reduced while suppressing the bending deformation of the eraser 10. The recess 12 of the eraser 10 does not approach or contact the inner peripheral wall of the case 20. By configuring the concave portion 12 of the eraser 10 so as not to be close to or in contact with the inner peripheral wall of the case 20 substantially in the longitudinal direction, sliding resistance when the eraser 10 is extended from the case 20 is reduced. Can do.

  The concave portion 12 of the eraser 10 is “proximately or not in contact with the inner circumferential wall of the case 20”, for example, in the range of 80% or more of the longitudinal direction of the eraser 10 in proximity or contact. It is said that it is preferably not in contact or in contact within a range of 90% or more in the longitudinal direction of the eraser 10 and more preferably in a range of 95% or more of the longitudinal direction of the eraser 10. In the long object feeding device 1 of the present embodiment, the concave portion 12 of the eraser 10 is close to the inner peripheral wall of the case 20 only in the opening 22, and the concave portion 12 of the eraser 10 is the inner peripheral wall of the case 20 in other portions. Is not in close proximity or contact.

  On the other hand, the outer surface of the prismatic protrusion 14 of the eraser 10 is configured to approach or contact the inner peripheral wall of the case 20 substantially over the longitudinal direction thereof. An inner peripheral surface of the case 20 formed close to the eraser 10 that is elastically deformed comes into contact with the eraser 10 when the eraser 10 is elastically deformed. Note that the fact that the outer surface of the prismatic protrusion 14 of the eraser 10 is “substantially close to or in contact with the inner peripheral wall of the case 20” means, for example, 80% or more of the longitudinal direction of the eraser 10 Refers to proximity or contact in a crossing range, preferably in the range of 90% or more of the longitudinal direction of the eraser 10, more preferably in the range of 95% or more of the longitudinal direction of the eraser 10 Say. In the long object feeding device 1 according to the present embodiment, the outer side surface of the prismatic protrusion 14 of the eraser 10 approaches or contacts the inner peripheral wall of the case 20 over the longitudinal direction of the eraser 10. For this reason, the movement (backlash) to the direction orthogonal to the axial direction of the eraser 10 at the time of using the eraser 10 can be reduced.

  By configuring in this way, the long object feeding device 1 according to the present embodiment is easier to use than the conventional long object feeding device, and the length fed from the long object feeding device 1 is longer. The operability of the eraser 10 which is a scale is further improved.

(Holder 30)
FIG. 9 is a plan view showing a holder provided in the long object feeding device according to the present embodiment, and FIG. 10 is a side view showing the holder of the present embodiment as viewed from the side. As shown in these drawings, the holder 30 includes a holding portion 31 that holds the eraser 10, an operation portion 32 that is operated by a user, and an elastic engagement portion that engages with the case 20 to lock the holder 30. 33, an insertion plate 34 that connects the operation portion 32 and the elastic engagement portion 33, and an elastic connection portion 35 that connects the holding portion 31 and the elastic engagement portion 33. These components are integrally formed of a flexible material such as a resin material.

  The holding portion 31 is disposed in the case 20 and has two holding plates 312 facing each other and a connecting plate 314 that connects and supports the rear end portions of the pair of holding plates 312. The two sandwiching plates 312 are spaced apart from each other with a slightly narrower spacing between the bottom surfaces of the two opposing concave portions 12 of the eraser 10, and the width is narrower than the width of the concave portion 12, and the thickness (vertical direction) ) Is formed smaller than the groove depth of the recess 12. Each of the holding plates 312 is immersed in the two recesses 12 and holds the eraser 10 between them. In each of the sandwiching plates 312, a plurality of barbs are formed on surfaces facing each other in order to prevent the eraser 10 from falling off. “Return” makes it easier to clamp the eraser 10 by making the backward movement of the eraser 10 relative to the holding portion 31 easier than the relative forward movement.

  The connecting plate 314 is formed so as to be curved backward slightly and extend vertically. When curved and formed in this way, it is possible to prevent the front end side end portions of the two sandwiching plates 312 from spreading in directions away from each other during cooling after the holder 30 is molded. Further, even after the molded holder 30 is cooled, the deformation of the connecting plate 314 has anisotropy so that the distal end portions of the two clamping plates 312 are not easily deformed so as to be separated from each other. Can be made.

  The operation unit 32 is disposed so as to protrude from the case 20 so that the user can operate the operation unit 32. Further, in order to improve the user's feeling of operation, the rear end portion thereof is rounded, tapered toward the front end portion side, and formed in a curved shape so that the upper surface of the operation portion 32 is depressed. Furthermore, it is formed so as to have unevenness as a slip stopper on the surface.

  The elastic engagement portion 33 has a plate-like upper plate, middle plate, and lower plate, a curve at the rear end that connects the upper plate and the middle plate, and a curve at the front end that connects the middle plate and the lower plate. However, it is formed in a substantially inverted S shape when viewed from the side. The elastic engagement portion 33 can be greatly elastically deformed in the vertical direction. The rear end of the lower plate is formed to be curved upward. When the rear end of the lower plate is formed in this manner, the rear end of the lower plate is not caught on the inner peripheral wall of the case 20 when the holder 30 is retracted. Two locking projections 332 are formed on the upper surface of the upper plate of the elastic engagement portion 33 that contacts the inner peripheral surface of the upper wall of the case 20 so as to face each other with the central insertion plate 32 interposed therebetween. The locking protrusion 332 cannot engage with the non-locking hole 264 having a narrow groove width formed in the guide groove 26 of the case 20, but can engage with the locking hole 262 having a wide groove width. it can.

  The elastic engagement portion 33 is disposed in the case 20 in a state of being compressed in the vertical direction (see FIG. 2), and the engagement protrusion 332 is always urged upward in the case 20 to thereby engage the engagement protrusion 332. Is engaged with the locking hole 262. By this engagement, the holder 30 is locked so that it cannot be moved relative to the case 20 in the front-rear direction. On the other hand, when the operating portion 32 is pressed downward, the elastic engaging portion 33 is compressed and elastically deformed, and the locking protrusion 332 is detached from the locking hole 262 of the case 20, so that the case 20 of the holder 30 is moved to. Is released. When the engagement between the locking projection 332 and the case 20 is released, the holder 30 can freely move in the front-rear direction within the case 20.

  In a free state where the elastic engagement portion 33 is not assembled in the case 20 (see FIG. 10), the rear end of the lower plate connected to the middle plate by the curvature of the front end is positioned below the front end of the lower plate. Formed. When the elastic engagement portion 33 is formed in this way, when the holder 30 is assembled in the case 20, the contact pressure between the front end of the lower plate and the inner peripheral wall of the case 20 causes the rear end of the lower plate and the inner peripheral wall of the case 20. It can comprise so that it may become low compared with the contact pressure. With this configuration, the frictional force between the front end of the lower plate and the inner peripheral wall of the case 20 when the holder 30 assembled in the case 20 is slid in the front-rear direction can be reduced. The sliding resistance at the time of paying out or housing in the case 20 can be reduced. In particular, the sliding resistance when feeding out the eraser 10 can be greatly reduced.

  The insertion plate 34 connects the lower surface of the operation portion 32 and the upper surface of the elastic engagement portion 33 and is formed as a flat plate having a slightly smaller width than the non-locking hole 264 having a narrow groove width of the guide groove 26. The insertion plate 34 passes through the guide groove 26 in the vertical direction, and is arranged so that the upper portion protrudes from the case 20. The insertion plate 34 is slidable in the front-rear direction of the guide groove 26 while guiding the holder 30 in the front-rear direction according to the user's slide operation on the operation unit 32.

  The elastic connecting portion 35 includes a front portion extending rearward from the lower end portion of the connecting plate 314 and a rear portion extending further upward and connected to the front end portion (upper end portion) of the upper plate of the elastic engagement portion 33. And has a substantially inverted L shape when viewed from the side. The width of the elastic connecting portion 35 is the same as that of the connecting plate 314 and the connecting engaging portion 33 and is smaller than the separation interval in the width direction of the inner peripheral wall of the case 20. For this reason, the side surfaces of the connecting plate 314, the elastic connecting portion 35, and the connecting engaging portion 33 do not come into contact with the inner peripheral wall of the case 20, and the eraser 10 is fed out or the eraser 10 is accommodated in the case 20. Further, no sliding resistance is generated between the side surface of the holder 30 and the inner peripheral surface of the case 20. Furthermore, the holding portion 31, the elastic engagement portion 33, and the elastic coupling portion 35 of the holder 30 assembled in the case 20 are smaller than the cross-sectional area of the maximum outer shape portion of the eraser 10 in the direction orthogonal to the axial direction. Since it is accommodated within the range of the cross-sectional area, the case 20 can have a small cross-sectional shape.

(Slide operation)
In the long object feeding device 1 configured as described above, the eraser 10 is accommodated in the case 20 when not in use. The locking projection 332 of the holder 30 is urged to engage with the locking hole 262 of the guide groove 26 of the case 20, and the holder 30 and the eraser 10 are locked so as not to move in the front-rear direction. When the eraser 10 is fed out, first, the operation portion 32 of the holder 30 is pressed toward the central axis of the case 20 to release the engagement between the locking projection 332 of the holder 30 and the locking hole 262 of the case 20. To do. When the engagement between the locking projection 332 and the locking hole 262 is released, the holder 30 can move in the case 20 in the front-rear direction. Thereafter, when the operation portion 32 of the holder 30 is slid forward, the eraser 10 held by the holding portion 31 of the holder 30 can be fed out from the opening 22 at the distal end portion of the case 20. When the pressing of the operating portion 32 is released and the locking projection 332 is re-engaged with the locking hole 262, the holder 30 is locked to the case 20 and the eraser 10 fed out from the opening 22 of the case 20. Can be used.

  When a sliding operation is performed forward while pressing down the operation unit 32, the locking protrusion 332 of the holder 30 sequentially contacts and does not contact the locking hole 262 and the non-locking hole 264 of the case 20. Move forward repeatedly. For this reason, the user can perform the slide operation while grasping the position of the locking hole 262 of the case 20.

  In the long object feeding device 1 according to the present embodiment, the eraser 10 has a recess 12 so that the recess 12 of the eraser 10 does not substantially approach or contact the inner peripheral wall of the case 20 over its longitudinal direction. Configured. For this reason, the sliding resistance at the time of feeding out the eraser 10 from the case 20 is reduced as compared with the case of the conventional long object feeding device. The same applies to the case where the eraser 10 is accommodated in the case 20.

(Use of erasure)
In the present embodiment, the eraser 10 is used in a state in which the outer surface of the prismatic protrusion 14 of the eraser 10 is close to or in contact with the inner peripheral wall of the case 20 over the longitudinal direction of the eraser 10. For this reason, the movement (backlash) in the direction orthogonal to the axial direction of the eraser 10 in use is reduced as compared with the case of the conventional long object feeding device.

  Further, in the present embodiment, the elastic coupling portion 35 is interposed between the holding portion 31 of the holder 30 and the elastic engagement portion 33. The elastic connecting portion 35 connects the lower end portion of the connecting plate 314 and the upper end portion of the elastic engaging portion 33, and elastically supports the holding portion 31 of the holder 30 in the axial direction in a non-target manner. If comprised in this way, when the load is applied toward the back of the eraser 10 axial direction by use of the eraser 10, the elastic connection part 35 will be elastically deformed non-target (non-axial target) with respect to the axial direction. Therefore, it is possible to release the load in the axial direction rearward in a direction orthogonal to the axial direction. Since the outer surface of the prismatic protrusion 14 of the eraser 10 is close to or in contact with the inner peripheral wall of the case 20, if the elastic connecting portion 35 of the holder 30 is elastically deformed in a non-target manner in the axial direction, the eraser 10. The load applied in the axial direction is released from the outer surface of the prismatic protrusion 14 to the inner peripheral wall of the case 20 and the axial load applied to the elastic engagement portion 33 is reduced. Therefore, it is possible to prevent the engagement between the locking projection 332 and the locking hole 262 from being released due to the use of the eraser 10.

  Further, in the present embodiment, the connecting plate 314, the elastic connecting portion 35, and the elastic engaging portion 33 of the holder 30 are integrally formed as one curved plate, and are elastically deformed as an integral elastic member. It is configured. For this reason, it is possible to provide the holder 30 that can be elastically deformed with a larger displacement than the holder of the conventional long object feeding device and that has a longer life.

(assembly)
When assembling the long object feeding device 1 described above, first, two opposing concave portions 12 (upper and lower concave portions 12 in FIG. 2) between the rear end portions of the eraser 10 are placed between the two holding plates 312 of the holder 30. The eraser 10 is assembled to the holder 30 by fitting. Subsequently, the assembled eraser 10 and holder 30 are inserted into the opening 24 at the rear end of the case 20. The insertion plate 34 of the holder 30 penetrates the guide groove 26 communicating with the opening 24 at the rear end portion of the case 20 in the vertical direction, and the elastic engagement portion 33 of the holder 30 is compressed in the vertical direction in the case 20. The eraser 10 and the holder 30 are assembled to the case 20. When the holder 30 is moved to an arbitrary position on the case 20 where the locking hole 262 of the guide groove 26 is formed, it is pressed by the elastic engagement portion 33 and the locking projection 332 is engaged with the locking hole 262. The holder 30 is locked to the case 20. Finally, when the cap 40 is assembled to the rear end portion of the case 20, the long object feeding device 1 can be assembled. In order to allow the user to easily replace the eraser 10, the above assembling operation and the disassembling operation by the reverse procedure can be easily performed without using a jig.

  In the present embodiment described above, it has been described that the convex portion 28 protruding toward the central axis is formed in the opening 22, but the present invention is not limited to this, and in other embodiments, the convex portion 28 is formed. It is not necessary to provide it. In this case, the effect of suppressing the bending deformation in the direction orthogonal to the axial direction of the eraser 10 is greater, and the cross-sectional shape (cross-sectional secondary moment) in the direction orthogonal to the axial direction of the eraser 10 and the convex portion 28. It can be attributed to the support of the eraser 10 by the inner peripheral surface of the case 20 except. Furthermore, the groove | channel of the front-end | tip part of the recessed part 12 can be used as the escape groove | channel of the swarf produced by use of the eraser 10. FIG. In this case, the eraser 10 can be used more easily. Further, in the present embodiment, it has been described that the concave portions 12 are formed on all four side surfaces of the eraser 10. However, as long as the sliding resistance between the eraser and the inner peripheral wall of the case can be reduced, other In the embodiment, the recess may be formed on at least one of the erased side surfaces.

  Further, in the present embodiment described above, an eraser is taken as an example of a long object, but the present invention is not limited to this, and in other embodiments, a cutter blade, a color core, a colored painting material, a cosmetic, etc. Can be formed into a long object and held by an arbitrary holding part. Moreover, the elongate object of this Embodiment has a corner | angular part in the cross-sectional shape of the direction orthogonal to a longitudinal direction, and can use the eraser 10 suitably by having the ridgeline extended in a longitudinal direction. Explained. However, in another embodiment, the long object may have a round shape with a predetermined radius instead of a corner portion in a cross-sectional shape in a direction orthogonal to the longitudinal direction. In this case, the interference between the corners of the inner peripheral surface of the case and the ridgeline of the eraser that occurs at the four corners in the direction perpendicular to the longitudinal direction is avoided. The dynamic resistance can be further reduced.

  The present invention can be implemented in various other forms without departing from the gist or main features thereof. Therefore, the above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. The scope of the present invention is shown by the scope of claims, and is not restricted by the text of the specification. Moreover, all modifications, various improvements, substitutions and modifications belonging to the equivalent scope of the claims are all within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Long thing feeding apparatus 10 Character eraser 12 Recess 20 Case 28 Projection 30 Holder 31 Holding part 312 Holding plate 314 Connecting plate 32 Operation part 33 Elastic engagement part 332 Locking protrusion (protrusion)
35 Elastic connection

Claims (6)

A long object in which a recess extending substantially over the longitudinal direction is formed in at least one plane extending in the longitudinal direction;
An elongated case that accommodates the elongated object from an opening formed at one end;
A holder configured to be movable in the longitudinal direction within the case, and a holder for holding the long object,
At least one plane extending in the longitudinal direction of the elongated object is substantially close to or in contact with the inner peripheral wall of the elongated case over the longitudinal direction, and the recess of the elongated object is substantially A long object feeding device, characterized in that it does not approach or contact the inner peripheral wall of the elongated case in the longitudinal direction.   The long object has four planes that are substantially orthogonal to each other, and the concave portions are formed in the respective planes in the longitudinal direction, so that ridge lines extending in the longitudinal direction at the four corners of the long object are formed. The long object feeding device according to claim 1, wherein: The holder is
An operating portion protruding outside the case;
A holding unit for holding the long object;
A protrusion that engages with the case so as to be able to restrict movement of the holder in the longitudinal direction;
An elastic member disposed below the operation unit and connected to the operation unit and the projection, and is compressed downward in response to the pressing of the operation unit to release the engagement between the case and the projection. With the joint,
The elastic connection part which is interposed between the said holding | maintenance part and the said elastic engagement part, and elastically supports this holding | maintenance object to a non-axial object with respect to an axial direction is provided. Long material feeding device.   The holding portion includes a pair of sandwiching plates that sandwich the long object, and a plate-like connecting plate that supports the pair of sandwiching plates and extends in the vertical direction, and the elastic engagement between the connecting plate and the elastic engagement The long object feeding device according to claim 3, wherein the portion and the elastic connecting portion are integrally formed as a series of curved plates.   5. The long object feeding device according to claim 4, wherein the recesses are respectively formed on mutually opposing planes of the long object, and the holding part holds each of two opposing concave parts of the long object. .   6. The projection according to claim 1, wherein a protrusion that protrudes toward a central axis is formed in the opening of the case corresponding to the shape of the recess of the elongated object. Long material feeding device.

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