JP2016203453A - Knock type writing utensil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a knock type writing utensil in which knocking operation can be performed even by using either member of a clip member and a knock member and the knock operation of the one member is not interlocked with that of the other member.SOLUTION: A knock type writing utensil 1 comprises a barrel 4, a writing body 5, first operating members 30 and 60, and a second operating member 20, where a writing position and a non-writing position of the writing body 5 can be switched by a knock operation of pressing the first operating members 30 and 60 or the second operating member 20 forward. The knock operation can be performed even by using either one of the first operating members 30 and 60 and the second operating member 20. During the knock operation using the second operating member 20, the first operating members 30 and 60 engage with the second operating member 20 so that the knock operation on the first operating members 30 and 60 are performed, while during the knock operation using the first operating members 30 and 60, the first operating members 30 and 60 do not engage with the second operating member 20.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a knock-type writing instrument.

  There is a so-called knock-type writing instrument that causes a writing portion of a refill (writing body) to appear and disappear from a front end portion of a front shaft by knocking an operation member with a finger. Usually, a clip provided on the side surface of the shaft tube or a knock member provided at the rear end of the shaft tube serves as an operation member. In the case of a knock-type writing instrument using a clip as an operation member, the knock operation cannot be performed because the clip is broken. In addition, in the case of a knock-type writing instrument using a knock member as an operation member, the knock operation cannot be performed because the knock member is lost. Loss of the knock member can occur, for example, when the knock member also serves as a cover for the erasing member.

  Therefore, in the knock type writing instrument, a knock type writing instrument in which a clip and a knock member are integrally formed and any of them can be knocked is known (Patent Documents 1 to 3).

Japanese Utility Model Publication No.6-28312 JP 7-314979 A Japanese Utility Model Publication No. 2-76087

  When the clip and the knock member are integrally formed, for example, when the shaft cylinder is gripped and the knock member is knocked with the thumb, the clip is also gripped together and the knock operation may not be performed.

  An object of the present invention is to provide a knock-type writing instrument that can be knocked using either a clip or a knocking member, and one of the knocking operations is not linked to the other.

  According to an aspect of the present invention, the writing instrument includes a shaft cylinder, a writing body, a first operation member, and a second operation member, and the writing operation is performed by a knock operation that presses the first operation member or the second operation member forward. A knock-type writing instrument capable of switching between a writing position and a non-writing position of the body, wherein the knocking operation is possible using any of the first operation member and the second operation member. During the knocking operation, the first operating member and the second operating member are engaged to perform the knocking operation of the first operating member. However, during the knocking operation of the first operating member, the first operating member A knock type writing instrument is provided in which one operating member and the second operating member do not engage with each other.

  According to another aspect, the first operating member has a receiving surface, and the second operating member can be engaged with the receiving surface only when the second operating member moves forward. A knock-type writing instrument having a surface is provided.

  According to another aspect, the rotor is urged rearward together with the writing body, and moves in the front-rear direction in the axial direction and in the circumferential direction in response to a knocking operation of the first operating member. A rotating rotor, and a cam member arranged to be movable in the front-rear direction in accordance with a knocking operation of the second operation member and biased rearward, 1 cam portion is formed, a second cam portion is formed on the rotor, a third cam portion is formed on the cam member, and the first cam portion, the second cam portion, and the third cam portion cooperate with each other. When the writing position of the writing body is switched between the writing position and the non-writing position, and the knocking operation of the first operating member is performed at the non-writing position of the writing body, the second cam portion of the rotor is Engagement with the first cam portion of the shaft cylinder restricts the backward movement of the rotor and The rotation of the rotor is restricted by engaging with the third cam portion of the writing cam member, whereby the writing body maintains the writing position, and the first operating member or the first at the writing position of the writing body. (2) When the knocking operation of the operation member is performed, the restriction by the cam member is released, and the writing body moves to the non-writing position by moving backward after the rotor rotates. A formula writing instrument is provided.

  According to another aspect, the knock is characterized in that the second operation member is provided on a side surface of the shaft tube, and the first operation member is provided on a rear end portion of the shaft tube. A formula writing instrument is provided.

  According to another aspect, there is provided a knock type writing instrument in which the first operation member is a cap of a refill storage container.

  According to another aspect, there is provided a knock type writing instrument in which the first operation member includes an erasing member.

  According to the aspect of the present invention, it is possible to perform a knock operation using any of the clip and the knock member, and there is a common effect of providing a knock type writing instrument in which any one of the knock operations is not linked to the other.

It is a front view of the writing instrument by embodiment of this invention. It is a longitudinal cross-sectional view of the writing instrument of FIG. It is another longitudinal cross-sectional view of the writing instrument of FIG. It is a perspective view of the tail plug of the writing instrument of FIG. It is a longitudinal cross-sectional view of the tail plug of FIG. It is a perspective view of the clip member of the writing instrument of FIG. It is a longitudinal cross-sectional view of the clip member of FIG. It is a perspective view of the knock member of the writing instrument of FIG. It is a longitudinal cross-sectional view of the knock member of FIG. It is a perspective view of the rotor of the writing part of FIG. It is a longitudinal cross-sectional view of the rotor of FIG. It is a perspective view of the cam ring of the writing instrument of FIG. It is another perspective view of the cam ring of FIG. It is a top view of the cam ring of FIG. It is sectional drawing of the cam ring by line AA of FIG. It is a top view of the rear axis | shaft of the writing instrument of FIG. FIG. 17 is a side view of the rear shaft of FIG. 16. It is sectional drawing of the rear axis by line BB of FIG. It is sectional drawing of the rear axis | shaft by line CC of FIG. FIG. 20 is a cross-sectional view of the rear shaft taken along line DD in FIG. 19. It is a perspective view of the 1st operation member of the writing instrument of FIG. It is a side view of refill storage goods. It is a fragmentary longitudinal cross-sectional view of the refill storage goods of FIG. It is an enlarged vertical sectional view of the writing instrument of FIG. 1 in a non-writing state. It is an enlarged vertical sectional view of the writing state of the writing instrument of FIG. FIG. 26 is an enlarged longitudinal sectional view in the middle of the first knocking operation of the writing instrument in the writing state of FIG. 25. FIG. 26 is an enlarged longitudinal sectional view in the middle of a second knocking operation of the writing instrument in the writing state of FIG. 24 or FIG. 25. It is a schematic diagram which shows the relationship of a cam mechanism. It is a schematic diagram of the cross section by line EE of FIG. It is a schematic diagram explaining knock operation in case the refill of the writing instrument of FIG. 1 is other than a mechanical pencil. It is a schematic diagram explaining knock operation in case the refill of the writing instrument of FIG. 1 is a mechanical pencil. It is a schematic diagram explaining the 2nd knock operation of the writing instrument of FIG. 1 of a non-writing state.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Corresponding components are denoted by common reference symbols throughout the drawings.

  1 is a front view of a writing instrument 1 according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the writing instrument 1 of FIG. 1, and FIG. 3 is another longitudinal sectional view of the writing instrument 1 of FIG. is there. In addition, FIG. 24 mentioned later is an expanded longitudinal cross-sectional view of the non-writing state of the writing instrument 1 of FIG.

  The writing instrument 1 is a so-called knock-type writing instrument. The writing instrument 1 includes a shaft cylinder 4 that is formed in a cylindrical shape and includes a front shaft 2 and a rear shaft 3, a refill 5 that is a writing body that is disposed in the shaft cylinder 4 and includes a writing portion 5a at one end, 1 spring 6, a second spring 7 disposed so as to surround the first spring 6, and a spring support member 8 that supports the first spring 6 and the front end portion of the second spring 7. The writing instrument 1 includes a tail plug 10 that is fitted into the rear end portion of the shaft cylinder 4, that is, the rear end portion of the rear shaft 3, and is formed in a cylindrical shape, and a clip member that includes a cylindrical portion. 20, a knock member 30 disposed in a cylindrical portion of the clip member 20, a rotor 40 disposed in front of the knock member 30, and a cam member disposed so as to surround the rotor 40. A cam ring 50 and a first operating member 60 fitted to the rear end portion of the knock member 30 are provided. In addition, since the knock member 30 and the first operation member 60 are integrated by fitting, the whole knock member 30 and the first operation member 60 fitted may be referred to as a first operation member.

  The front end portion of the front shaft 2 is formed in a taper shape, and a through hole for projecting the writing portion 5a of the refill 5 is formed. The rear end portion of the front shaft 2 is attached by screwing inside the front end portion of the rear shaft 3. In the shaft tube 4 of the writing instrument 1, as the refill 5, other than a mechanical pencil and a mechanical pencil (for example, a ballpoint pen or a marking pen) can be alternatively accommodated.

  In the present specification, in the axial direction of the writing instrument 1, the writing portion 5a side is defined as the “front” side, and the opposite side of the writing portion 5a is defined as the “rear” side. Furthermore, in the writing instrument 1, the refill 5 moves in the axial direction in the axial tube 4 by a knocking operation described later. The position of the refill 5 where the writing unit 5a is immersed in the shaft cylinder 4 is referred to as a non-writing position, and the state of the writing instrument 1 at that time is referred to as a non-writing state (FIGS. 1 and 2). Further, the position of the refill 5 where the writing unit 5a protrudes from the shaft cylinder 4 is referred to as a writing position, and the state of the writing instrument 1 at that time is referred to as a writing state (not shown). Hereinafter, the configuration of each member will be described.

  4 is a perspective view of the tail plug 10 of the writing instrument 1 of FIG. 1, and FIG. 5 is a longitudinal sectional view of the tail plug 10 of FIG. In FIG. 5, the lower side is the front side of the writing instrument 1.

  The tail plug 10 includes a tail plug main body 11 formed in a cylindrical shape, and a fitting protrusion 12 formed in a convex shape at the rear end portion of the tail plug main body 11. When the tail plug 10 is attached to the rear shaft 3, the tail plug 10 is difficult to come off because the fitting protrusion 12 is locked. Further, in order to guide the movement of the clip member 20 in the axial direction, a rectangular notch-shaped guide groove 13 is formed from the front end portion of the tail plug body 11 to the rear. At a position facing the guide groove 13 with respect to the central axis of the tail plug 10, a rectangular cutout portion 14 for receiving a part of a knock member 30 to be described later is formed.

  6 is a perspective view of the clip member 20 of the writing instrument 1 of FIG. 1, and FIG. 7 is a longitudinal sectional view of the clip member 20 of FIG. In FIG. 7, the lower side is the front side of the writing instrument 1.

  The clip member 20 includes a clip body 21 formed in a cylindrical shape, a clip portion 22 formed in an elongated rectangular parallelepiped shape, and a connection portion 23 that connects the clip body 21 and the clip portion 22. The clip member 20, specifically the clip portion 22, is used as the second operation member. A flange-shaped flange portion 24 is formed at the front end portion of the clip body 21. In the clip main body 21 including the flange portion 24, a rectangular notch-shaped engaging recess 25 extending rearward is formed in a portion facing the clip portion 22 and a portion that is axially symmetrical with the portion. Each of the flange portions 24 around the engaging recess 25 is formed with a sliding surface 26 chamfered with a surface parallel to the clip portion 22. Two contact recesses 27 defined in an arc shape are formed on the front end surface of the flange portion 24 at a position rotated 90 degrees around the axis from each of the engagement recesses 25. A pressing surface 28 is formed on the bottom surface of the engaging recess 25 to press an engaging protrusion 33 of a knock member 30 described later.

  The clip body 21 is inserted into the tail plug body 11 of the tail plug 10 from the front. At this time, the connection portion 23 of the clip member 20 is disposed in the guide groove 13 of the tail plug 10. Since the connecting portion 23 is guided along the guide groove 13, the clip member 20 can move in the front-rear direction with respect to the tail plug 10.

  FIG. 8 is a perspective view of the knock member 30 of the writing instrument 1 of FIG. 1, and FIG. 9 is a longitudinal sectional view of the knock member 30 of FIG. In FIG. 9, the lower side is the front side of the writing instrument 1.

  The knock member 30 has a knock portion main body 31 formed in a cylindrical shape. A cam surface 32 is formed on the front end surface of the knock portion main body 31 and includes a plurality of peaks and valleys formed along the circumferential direction. Further, on the outer peripheral surface of the knock portion main body 31 in the vicinity of the cam surface 32, two engaging projections 33 are formed that protrude in opposite directions and are formed in a substantially cubic shape. A receiving surface 34 that abuts against the pressing surface 28 of the clip member 20 when the clip member 20 is knocked is formed on the rear end surface of the engaging protrusion 33.

  The knock part main body 31 is inserted into the clip main body 21 of the clip member 20 from the front. In the non-writing state of the writing instrument 1, each of the engagement protrusions 33 of the knock member 30 is disposed in the guide groove 13 and the notch portion 14 of the tail plug 10, and is disposed in the engagement recess 25 of the clip member 20. Is done.

  10 is a perspective view of the rotor 40 of the writing instrument 1 of FIG. 1, and FIG. 11 is a longitudinal sectional view of the rotor 40 of FIG. In FIG. 11, the lower side is the front side of the writing instrument 1.

  The rotor 40 includes a small diameter portion 41, a medium diameter portion 42 formed in front of the small diameter portion 41, and a large diameter portion 43 formed in front of the medium diameter portion 42. The small diameter portion 41 is inserted into the knock portion main body 31 of the knock member 30 and used for centering. The medium diameter part 42 has a larger diameter than the small diameter part 41, and the large diameter part 43 has a larger diameter than the medium diameter part 42. Since the rotor 40 is formed in a cylindrical shape having substantially the same thickness as a whole, the rotor 40 has a large inner diameter in the order of the small diameter portion 41, the medium diameter portion 42, and the large diameter portion 43. A cam receiving surface 44 having a shape complementary to the cam surface 32 of the knock member 30 is formed on the rear end surface of the middle diameter portion 42. Four inner cams 45 projecting radially outward are provided at equal intervals in the circumferential direction on the outer circumferential surface of the middle diameter portion 42. The rear end surface of the inner cam 45 is formed as a cam slope inclined in the same direction.

  The inner diameter of the medium diameter portion 42 is set so as to be fitted so that the refill 5 does not come off. That is, the refill 5 is inserted and fitted into the rotor 40 and operates integrally. Further, a spring support surface 46 which is an annular surface facing forward is formed inside the large diameter portion 43.

  12 is a perspective view of the cam ring 50 of the writing instrument 1 of FIG. 1, FIG. 13 is another perspective view of the cam ring 50 of FIG. 12, and FIG. 14 is a top view of the cam ring 50 of FIG. 15 is a cross-sectional view of the cam ring 50 taken along line AA in FIG. In FIG. 15, the lower side is the front side of the writing instrument 1.

  The cam ring 50 includes a ring main body 51 formed in a cylindrical shape, and two corner portions 52 that are defined by being cut out at two locations from the rear end portion of the ring main body 51 toward the front and in axially symmetric positions. have. Guide protrusions 53 are formed along the axial direction on the inner surface of the ring main body 51 that is the inner surface of each of the corner portions 52. Two first cam protrusions 54 protruding inward in the radial direction are formed on the front end portion of the guide protrusion 53 so as to face each other. Further, on the inner surface of the ring main body 51, two second protrusions projecting inward in the radial direction are formed at positions that are rotated by about 70 to 80 degrees around the axis from each of the first cam protrusions 54 and further forward. Two cam projections 55 are formed. The first cam protrusion 54 and the second cam protrusion 55 constitute an outer cam 56. The front end surfaces of the first cam protrusion 54 and the second cam protrusion 55 are formed as cam inclined surfaces inclined in the same direction.

  16 is a top view of the rear shaft 3 of the writing instrument 1 of FIG. 1, FIG. 17 is a side view of the rear shaft 3 of FIG. 16, and FIG. 18 is the rear shaft 3 along line BB of FIG. 19 is a cross-sectional view of the rear shaft 3 taken along line CC in FIG. 16, and FIG. 20 is a cross-sectional view of the rear shaft 3 taken along line DD in FIG. 17, 18, and 19, the lower side is the front side of the writing instrument 1.

  The rear shaft 3 has a cylindrical rear shaft main body 70. A rectangular cut-out receiving hole 71 is formed from the rear end portion of the rear shaft body 70 toward the front. The vicinity of the rear end portion of the receiving hole 71 is complementarily formed so as to be fitted to the fitting protrusion 12 of the tail plug 10. On the other hand, the receiving hole 71 defines a hole communicating with the rear shaft 3 together with the guide groove 13 of the tail plug 10 even when the tail plug 10 is attached to the rear shaft 3. The connecting portion 23 of the clip member 20 is disposed in this hole. The interior of the rear shaft main body 70 is separated into two by a partition wall 72.

  From the rear surface of the partition wall 72, a total of two sets of guide rails 73 are formed, one set extending rearward to the receiving hole 71 along the inner peripheral surface of the rear shaft main body 70 and one set in an axially symmetric position. ing. The engagement protrusion 33 of the knock member 30 is disposed between the two guide rails 73 in each set. When the engagement protrusion 33 of the knock member 30 is guided along the guide rail 73, the knock member 30 can move in the front-rear direction without rotating around the axis. Further, the sliding surface 26 of the clip member 20 is arranged to face each pair of guide rails 73. As the clip member 20 slides on the guide rail 73, the clip member 20 can move in the front-rear direction without rotating around the axis.

  A circular opening 74 that is slightly larger than the diameter of the middle diameter portion 42 of the rotor 40 is formed in the center of the partition wall 72. An intermediate cam 75 is formed on the front surface of the partition wall 72 so as to protrude forward from the periphery of the opening 74. As shown in FIG. 20, the middle cam 75 is divided into two spaced apart portions having a semicircular arc cross section, and has a substantially cylindrical shape as a whole. Therefore, a substantially cylindrical space is formed between the inner peripheral surface of the rear shaft main body 70 and the radially outer surface of the middle cam 75. The front end surface of the middle cam 75 is formed as a cam slope inclined in the same direction. Further, a longitudinal groove 75a (FIGS. 28 and 29) is formed on the radially inner side surface of the intermediate cam 75, and a plurality of longitudinal grooves 75b (FIGS. 28 and 29) are formed on the radially outer surface of the intermediate cam 75. Is formed.

  In the partition wall 72 in the vicinity of the inner peripheral surface of the rear shaft main body 70, two arc-shaped through holes 76 are formed at axially symmetric positions. A sliding groove 76a extending in the axial direction is formed in the central portion of the inner wall in the through hole 76.

  FIG. 21 is a perspective view of the first operation member 60 of the writing instrument 1 of FIG. The first operation member 60 includes a small-diameter fitting portion 61 formed in a columnar shape and an operation portion 62 having a larger diameter than the fitting portion 61. The fitting portion 61 is inserted and fitted into the rear end portion of the knock portion main body 31 of the knock member 30. The first operation member 60 also serves as a cap for a container that houses the replaceable refill 5 such as a ballpoint pen housed in the writing instrument 1.

  22 is a side view of the refill storage product 100, and FIG. 23 is a partial longitudinal sectional view of the refill storage product 100 of FIG.

  The refill storage product 100 includes a refill storage container 101 and a single refill 5 stored in the refill storage container 101. The refill storage container 101 includes a cylindrical container main body 102 and a first operation member 60 that is a cap that opens and closes an opening on the top side (upper side in the drawing) of the container main body 102. A tail plug 103 is tightly fitted in the opening on the bottom side (downward in the figure) of the container body 102. The refill 5 is arranged in the refill storage container 101 so that the writing unit 5 a is positioned toward the first operation member 60.

  Since the first operation member 60 serves as a cap for the refill storage container 101, when the refill 5 is accommodated in the shaft cylinder 4, the first operation member 60 is colored in substantially the same color as the ink color of the refill 5. May be.

  Conventionally, in the case of a refill exchange type writing instrument that cannot be colored with a specific color for color identification on the operation member etc., the refill can be visually recognized from outside by making all or part of the shaft cylinder transparent or translucent This allowed the user to know the color of the handwriting. Therefore, each time the refill 5 is replaced, the cap of the refill storage container 101 in which the refill 5 is stored is attached to the writing instrument 1 as the first operation member 60. The user can easily know the color of the handwriting of the refill 5 by looking at the color of the first operation member 60 attached to the writing instrument 1. For this reason, it becomes unnecessary to make the shaft cylinder 4 transparent or semi-transparent, so that the width of the design of the shaft cylinder 4 can be widened.

  Next, with reference to FIG. 24 and FIG. 25, an outline of assembling of each component and related operations will be described. 24 is an enlarged longitudinal sectional view of the writing instrument 1 of FIG. 1 in a non-writing state, and FIG. 25 is an enlarged longitudinal sectional view of the writing instrument 1 of FIG.

  The rotor 40 is inserted into the rear shaft main body 70 from the front. That is, the small diameter portion 41 of the rotor 40 extends to the rear of the partition wall 72 through the opening 74, and a part of the medium diameter portion 42 is surrounded by the medium cam 75. Thereby, the inner cam 45 of the rotor 40 and the middle cam 75 of the rear shaft 3 are arranged to cooperate with each other. Further, the rear end portion of the first spring 6 whose front end portion is supported by the spring support member 8 abuts against the spring support surface 46 of the rotor 40, and the refill 5 fitted to the rotor 40 and the rotor 40 is moved rearward. Energized.

  The knock member 30 is inserted into the rear shaft main body 70 from the rear so that the engaging protrusion 33 is disposed between the guide rails 73 of the rear shaft 3. At this time, the small-diameter portion 41 of the rotor 40 is inserted into the knock portion main body 31 of the knock member 30, whereby the cam surface 32 of the knock member 30 and the cam receiving surface 44 of the rotor 40 are arranged to face each other. Is done. Further, the clip member 20 has a rear shaft main body 70 such that the connecting portion 23 is disposed in the receiving hole 71 of the rear shaft 3 and the sliding surface 26 is disposed on the guide rail 73 of the rear shaft 3. It is inserted into the back from behind. Further, the tail plug 10 is inserted and fitted into the rear shaft body 70 from the rear so that the connecting portion 23 of the clip member 20 is disposed in the guide groove 13. In the non-writing state of the writing instrument 1 (FIG. 24), the engagement protrusions 33 of the knock member 30 are arranged in the guide groove 13 and the notch portion 14 of the tail plug 10 and in the engagement recess 25 of the clip member 20. Is done. The first operation member 60 is inserted into the rear end portion of the knock portion main body 31 of the knock member 30.

  The cam ring 50 is inserted into the rear shaft body 70 from the front. The ring body 51 is disposed in a substantially cylindrical space between the inner peripheral surface of the rear shaft main body 70 and the middle cam 75 so as to surround the middle cam 75 of the rear shaft 3. Thereby, the middle cam 75 of the rear shaft 3 and the outer cam 56 of the cam ring 50 are arranged to cooperate with each other.

  As shown in FIG. 3, the two corners 52 of the cam ring 50 extend to the rear of the partition wall 72 through the through holes 76 of the partition wall 72. At this time, the guide protrusion 53 of the cam ring 50 is disposed in the sliding groove 76 a of the through hole 76. Since the guide protrusion 53 of the cam ring 50 is guided along the sliding groove 76a, the cam ring 50 can move in the front-rear direction without rotating around the axis. The tip ends of the two corners 52 extending rearward of the partition wall 72 abut on the clip member 20 in the abutment recess 27 of the clip member 20. The rear end portion of the second spring 7 whose front end portion is supported by the spring support member 8 is in contact with the front end surface of the ring main body 51 of the cam ring 50 and urges the cam ring 50 and the clip member 20 rearward.

  When the first operating member 60 is knocked from the non-writing state of the writing instrument 1 in FIG. 24, the writing state as shown in FIG. 25 is entered. Here, the knocking operation refers to a series of operations until the clip portion 22 of the clip member 20 as the first operation member 60 or the second operation member is pressed forward, that is, after being pressed, until the pressing is released. . The knocking operation of the first operating member 60 is particularly referred to as a first knocking operation, and the knocking operation of the second operating member is particularly referred to as a second knocking operation.

  Although details will be described later, the writing state of the writing instrument 1 is configured to be maintained by the engagement of the inner cam 45 of the rotor 40. In the non-writing state or writing state of the writing instrument 1, the crests of the cam surface 32 of the knock member 30 and the crests of the cam receiving surface 44 of the rotor 40 are arranged so as to be out of phase. When a pressing force in the axial direction is applied to the knock member 30 against the urging force of the first spring 6 by the knocking operation of the first operating member 60, the phase of the peak portions of the cam surface 32 and the cam receiving surface 44 is increased. A force in the rotational direction is generated so as to eliminate the deviation, and the rotor 40 is rotated in a certain direction while moving forward. When the rotor 40 urged rearward by the first spring 6 moves forward against the urging force and engages in front, the writing instrument 1 is in a writing state, and the engagement of the rotor 40 is released and moves backward. Then, the writing instrument 1 is in a non-writing state.

  When a pressing force in the axial direction is applied to the clip member 20 against the urging force of the second spring 7 by knocking the second operating member, that is, the clip portion 22 of the clip member 20, the clip member 20 and The cam ring 50 that contacts the clip member 20 in the contact recess 27 of the clip member 20 moves forward.

  FIG. 26 is an enlarged vertical sectional view in the middle of the first knocking operation of the writing instrument 1 in the writing state of FIG. Here, the results of the first knocking operation of the writing instrument 1 in the writing state differ depending on whether the refill 5 is a mechanical pencil or a case other than the mechanical pencil. That is, when the refill 5 is other than the mechanical pencil, when the writing instrument 1 in the writing state is subjected to the first knocking operation, the engagement of the rotor 40 is released and the writing instrument 1 is switched to the non-writing state. On the other hand, when the refill 5 is a mechanical pencil, when the writing instrument 1 in the writing state is first knocked, the engagement of the rotor 40 is not released, that is, the writing core is not switched to the non-writing state. Is paid out.

  FIG. 27 is an enlarged longitudinal sectional view in the middle of the second knocking operation of the writing instrument 1 in the writing state of FIG. 24 or FIG. When the writing tool 1 in the writing state is subjected to the second knocking operation, the writing state is switched to the non-writing state regardless of whether the refill is a mechanical pencil or a mechanical pencil.

  When the writing instrument 1 in the non-writing state is subjected to the second knock operation, the first knock operation is also performed at the same time. That is, the engagement protrusion 33 of the knock member 30 is disposed in the engagement recess 25 that opens to the front of the clip member 20 that is pressed by the second knock operation in the non-writing state of the writing instrument 1. Therefore, when the clip member 20 moves forward, the engagement protrusion 33 of the knock member 30 engages with the engagement recess 25 and moves forward. That is, when the second knocking operation for pressing the clip portion 22 of the clip member 20 is performed, the knocking member 30 is also pressed in the same manner as when the first operating member 60 is pressed, and as a result, the first knocking operation is performed.

  On the other hand, even if the first knocking operation is performed on the writing instrument 1 in the non-writing state, the second knocking operation is not performed at the same time. That is, even when the knocking member 30 moves forward in the non-writing state of the writing instrument 1, the engaging protrusion 33 of the knocking member 30 does not engage with the engaging recess 25 of the clip member 20, and only the first knocking operation is performed. Done.

  By performing the first knocking operation, the writing instrument 1 shifts from the non-writing state of FIG. 24 to the writing state of FIG. 25. However, if the second knocking operation is performed, the first knocking operation is also performed. By doing this, the writing instrument 1 can be switched from the non-writing state to the writing state. In other words, the writing instrument 1 can be knocked using either the first operation member 60 or the second operation member (clip portion 22).

  Therefore, for example, even if the first operation member 60 is removed and lost or the clip portion 22 is broken, the knock operation can be performed by using the other operation member. Further, when the first operating member 60 is knocked, the first knocking operation can be performed even if the clip portion 22 is gripped together with the shaft cylinder. That is, according to the present invention, the knock operation can be performed using any of the first operation member 60 and the second operation member (clip portion 22), and any one of the knock operations is not interlocked with the other. Writing instruments are provided. Hereinafter, the first knock operation and the second knock operation will be described.

  FIG. 28 is a schematic diagram showing the relevance of the cam mechanism. FIG. 28 shows the positions of the inner cam 45 and the outer cam 56 with respect to a part of the developed middle cam 75 formed on the rear shaft 3. In FIG. 28, the upper side is the front side of the writing instrument 1. 29 is a schematic diagram of a cross section taken along line EE of FIG. Since FIG. 28 is a state in which the middle cam 75 formed on the rear shaft 3 is unfolded, in the cross-sectional view shown in FIG. 29, these cams are not curved but drawn in a straight line. In FIG. 29, the upper side is the radially outer side, and the lower side is the radially inner side.

  29, from the radially outer side toward the inner side, the rear shaft body 70 of the rear shaft 3, the ring body 51 and the outer cam 56 of the cam ring 50, the inner cam 75 of the rear shaft 3, and the inner diameter of the rotor 40. The part 42 and the inner cam 45 are arranged in order. More specifically, the inner cam 45 is disposed in a longitudinal groove 75 a formed on the inner surface in the radial direction of the middle cam 75. The second cam projection 55 of the outer cam 56 is disposed in a longitudinal groove 75 b formed on the outer surface in the radial direction of the middle cam 75. The inner cam 45 and the outer cam 56 move in the front-rear direction according to the knocking operation. The rotor 40 does not rotate when the inner cam 45 is disposed in the vertical groove 75a of the middle cam 75, but can rotate when it exceeds the vertical groove 75a. As apparent from FIG. 29, the inner cam 45 of the rotor 40 does not enter the longitudinal groove 75 b formed on the radially outer surface of the middle cam 75.

  30 is a schematic diagram illustrating a knocking operation when the refill 5 of the writing instrument 1 of FIG. 1 is other than a mechanical pencil, and FIG. 31 is a knocking when the refill 5 of the writing instrument 1 of FIG. 1 is a mechanical pencil. It is a schematic diagram explaining operation. 30 and 31, the upper side is the front side of the writing instrument 1. 30 and 31 show the positions and operations of the inner cam 45 and the outer cam 56 with respect to the developed middle cam 75 formed on the rear shaft 3, as in FIG. The inner cam 45 of the rotor 40 rotates at each knocking operation and moves to the right in the figure. When one of the inner cams 45 at the left end of the figure reaches the right end, the rotor 40 rotates exactly once. It will be done.

  FIG. 30 (1) shows the non-writing state of the writing instrument 1, and FIG. 30 (4) shows the writing state of the writing instrument 1.

  When the refill 5 is in the non-writing position as shown in FIG. 30 (1), the inner cam 45 is disposed in the longitudinal groove 75 a of the middle cam 75. In this state, the rotor 40 is urged backward by the first spring 6. Therefore, the inner cam 45 is biased in the rotational direction, that is, rightward in the figure due to the phase shift of the crests of the cam surface 32 and the cam receiving surface 44, but the rotation is restricted by the vertical wall of the vertical groove 75a. Has been.

  When the first operating member 60 is pressed from the state where the refill 5 is in the non-writing position, that is, when the first knocking operation is performed, the inner cam 45 of the rotor 40 moves forward and moves along the vertical wall of the vertical groove 75a of the middle cam 75. The position exceeding the position is reached (FIG. 30 (2)). At this time, since the restriction by the vertical wall of the vertical groove 75a is released, the rotor 40 slightly rotates rightward in the drawing so as to eliminate the phase shift of the peak portions of the cam surface 32 and the cam receiving surface 44. (FIG. 30 (3)).

  Next, when the pressing is released, that is, when the knocking operation is completed, the cam inclined surface of the inner cam 45 of the rotor 40 is pressed against the cam inclined surface of the intermediate cam 75 by the biasing force of the first spring 6. Thereby, the inner cam 45 of the rotor 40 slides along the cam inclined surface of the middle cam 75, and the rotation is restricted by coming into contact with the outer cam 56, particularly the vertical wall of the first cam protrusion 54. That is, the inner cam 45 of the rotor 40 is engaged with the middle cam 75 to restrict the rearward movement of the rotor 40 and the outer cam 56 is engaged to restrict the rotation of the rotor 40. Thus, the refill 5 maintains the writing position (FIG. 30 (4)).

  When the first operating member 60 is pressed from the state where the refill 5 is in the writing position, the inner cam 45 of the rotor 40 moves forward and reaches a position exceeding the vertical wall of the outer cam 56 (FIG. 30 (5)). At this time, since the restriction by the vertical wall of the outer cam 56 is released, the rotor 40 slightly rotates rightward in the drawing so as to eliminate the phase shift of the crests of the cam surface 32 and the cam receiving surface 44. (FIG. 30 (6)). Next, when the pressing is released, that is, when the knocking operation is completed, the cam slope of the inner cam 45 of the rotor 40 is pressed against the cam slope of the outer cam 56 by the biasing force of the first spring 6. As a result, the inner cam 45 of the rotor 40 slides along the cam slope of the outer cam 56 and moves rearward in the longitudinal groove 75a of the middle cam 75 (FIG. 30 (7)). That is, the inner cam 45 of the rotor 40 is disengaged from the middle cam 75 and the outer cam 56, and moves to the rear after the rotor 40 rotates, whereby the refill 5 moves to the non-writing position ( FIG. 30 (1)).

  Next, a knocking operation when the refill 5 of the writing instrument 1 of FIG. 1 is a mechanical pencil will be described with reference to FIG. 31 (1) to (4) are the same as FIGS. 30 (1) to (4), respectively. As shown in FIG. 31 (4), when the first operating member 60 is pressed from the state where the refill 5 is in the writing position, the engagement between the inner cam 45 of the rotor 40, the middle cam 75 and the outer cam 56 is performed. The writing core is fed out without being released. That is, by the first knocking operation, the inner cam 45 of the rotor 40 moves forward, but does not cross the vertical wall of the outer cam 56 (FIG. 31 (5)) and returns to the original writing position (FIG. 31 ( 6)).

  In other words, the mechanical pencil is extended so that the inner cam 45 of the rotor 40 does not cross the vertical wall of the outer cam 56 and the rotor 40 moves in the front-rear direction by the first knocking operation. The dimensions and shape of the refill 5 are designed. That is, the refill 5 advances by the pressing of the first operating member 60 before the tip of the refill 5 comes into contact with the inside of the front end portion of the front shaft 2 and the inner cam 45 of the rotor 40 crosses the vertical wall of the outer cam 56. Then, the further pressing operation is performed by releasing the mechanical pencil chuck and feeding out the writing core.

  When the clip portion 22 as the second operation member is pressed from the state where the refill 5 is in the writing position (FIG. 31 (6)), that is, when the second knocking operation is performed, the outer cam 56 moves forward, and the first cam protrusion 54 moves. The position reaches the inner cam 45 of the rotor 40 (FIG. 31 (7)). At this time, the restriction by the vertical wall of the outer cam 56 is released, but the rotation of the inner cam 45 of the rotor 40 is restricted by contacting the front end of the vertical wall of the vertical groove 75b of the middle cam 75. Further, the cam slope of the second cam projection 55 of the outer cam 56 comes into contact with the cam slope of the inner cam 45 of the rotor 40.

  When the clip portion 22 is further pressed from this state, the inner cam 45 of the rotor 40 moves forward and reaches a position exceeding the vertical wall of the vertical groove 75b of the middle cam 75 (FIG. 31 (8)). At this time, since the restriction by the vertical wall of the vertical groove 75b is released, the rotor 40 slightly rotates rightward in the drawing so as to eliminate the phase shift of the peak portions of the cam surface 32 and the cam receiving surface 44. (FIG. 31 (9)). Next, when the pressing is released, that is, when the knocking operation is completed, the cam inclined surface of the inner cam 45 of the rotor 40 is pressed against the cam inclined surface of the intermediate cam 75 by the biasing force of the first spring 6. As a result, the inner cam 45 of the rotor 40 slides along the cam slope of the middle cam 75 and moves backward in the longitudinal groove 75a of the middle cam 75 (FIG. 31 (10)). That is, the inner cam 45 of the rotor 40 is disengaged from the middle cam 75 and the outer cam 56, and moves to the rear after the rotor rotates, whereby the refill 5 moves to the non-writing position (see FIG. 31 (1)).

  FIG. 32 is a schematic diagram for explaining the second knocking operation of the writing instrument 1 of FIG. 1 in the non-writing state. As shown in FIG. 30 (1), when the clip portion 22 of the clip member 20 is pressed from the non-writing state of the writing instrument 1, the rotor 40 also advances together with the cam ring 50. That is, the inner cam 45 of the rotor 40 and the outer cam 56 of the cam ring 50 advance simultaneously with respect to the middle cam 75 as shown in FIG. Next, when the pressing is released, the clip member 20 returns to the original position and is in the state shown in FIG. 30 (2), and finally the refill 5 maintains the writing position as shown in FIG. 30 (4). To do.

  According to the present invention, the middle cam 75 of the rear shaft 3, the inner cam 45 of the rotor 40, and the outer cam 56 of the cam ring 50 can cooperate to switch between the writing position and the writing position of the refill 5. . That is, in a knock type writing instrument that can be used alternatively as a refill 5 other than a mechanical pencil and a mechanical pencil, a knock type writing instrument capable of moving in and out of the mechanical pencil and the mechanical pencil and feeding out the writing core of the mechanical pencil is provided. Is possible. Whether the mechanical pencil is used as the refill 5 or other than the mechanical pencil, switching from the writing position to the non-writing position can be performed by both the first operating member 60 and the second operating member. On the other hand, whether the mechanical pencil is used as the refill 5 or a device other than the mechanical pencil is used, the switching from the non-writing position to the writing position can be performed by the second operation member. In addition, when using other than the mechanical pencil as the refill 5, switching from the non-writing position to the writing position can also be performed by the first operation member 60. Further, when a mechanical pencil is used as the refill 5, the writing core can be drawn out by the first operation member 60. Therefore, there is no mistake in feeding out the writing core in the mechanical pencil and switching between the writing position and the non-writing position of any refill 5 other than the mechanical pencil and the mechanical pencil.

  In the above-described embodiment, the first operating member is provided at the rear end portion of the shaft cylinder 4, but may be provided outside the rear end portion. Moreover, although the 2nd operation member was provided in the side surface of the axial cylinder 4 as a part of clip member 20, you may provide in other than a side surface. Furthermore, the outer cam 56 of the cam ring 50 may adopt any configuration as long as it cooperates with the middle cam 75 of the rear shaft 3 to restrict the movement of the inner cam 45 of the rotor 40 in the rotational direction. The rear cam 3 has an intermediate cam 75 as long as it cooperates with the outer cam 56 of the cam ring 50 to restrict the rearward movement of the inner cam 45 of the rotor 40 and the movement in the rotational direction. May be. If the writing instrument 1 is not supposed to accommodate a mechanical pencil as the refill 5, the writing ring 1 is not provided with the cam ring 50, and the outer cam 56 formed on the cam ring 50 is integrated with the rear shaft body 70. It may be formed.

  The first operation member 60 may be configured as an erasing member for erasing the handwriting by the writing instrument 1. Further, the refill 5 in the above-described embodiment may contain thermochromic ink. In this case, the writing instrument 1 is a thermochromic writing instrument, the first operation member 60 as an erasing member is a friction body, and the handwriting of the writing instrument 1 can be discolored by frictional heat generated when it is rubbed by the friction body. . In addition, as the refill 5, a ballpoint pen containing a thermochromic ink, a mechanical pencil containing a thermochromic core, a pencil holder, or the like can be used. Moreover, it is good also as a writing instrument which stored the eraser erasable ink erasable with an eraser.

  Here, the thermochromic ink means that a predetermined color (first color) is maintained at room temperature (for example, 25 ° C.), and when the temperature is raised to a predetermined temperature (for example, 60 ° C.), the color changes to another color (second color). The ink has a property of returning to the original color (first color) when cooled to a predetermined temperature (for example, −5 ° C.). In the writing instrument 1 using the thermochromic ink, the second color is made colorless and the stroke drawn with the first color (for example, red) is heated to make it colorless, which is herein referred to as “erasing”. . Accordingly, frictional heat is generated by rubbing against the writing surface on which the drawn line is written by the first operating member 60 as a friction body, thereby changing the drawn line to colorless, that is, eliminating the drawn line. Of course, the second color may be a color other than colorless.

  The eraser erasable ink in the case of a writing instrument containing an eraser erasable ink that can be erased by an eraser is composed of water and non-thermoplastic colored resin particles having an average particle diameter of 2 to 20 μm and an ink composition. It contains at least 5 to 30% by weight based on the total amount of the product and non-colored particles having a glass transition point of less than 0 ° C. The “average particle size” defined in the present invention is a value obtained by measuring the average particle size with a particle size distribution measuring device [Microtrac HRA9320-X100 (manufactured by Nikkiso Co., Ltd.)]. The colored resin particles used in the present invention are made of colored resin particles, are non-thermoplastic, and need to be colored resin fine particles having an average particle diameter of 2 to 20 μm. Examples of the colored resin particles used in the present invention include colored resin particles in which a colorant composed of a pigment is dispersed in resin particles, colored resin particles whose surface is coated with a colorant composed of a pigment, and resin particles. Examples thereof include colored resin particles dyed with a colorant composed of a dye. In the present invention, if the colored resin particles are non-thermoplastic and satisfy the above average particle diameter, the structure (with hollow structure, without hollow structure (solid)), shape (spherical, polygonal, flat, (Fibrous) etc. is not particularly limited, but preferably, from the point of exhibiting excellent erasability, writing property, and stability over time as an ink, the glass transition point is close to the thermal decomposition temperature at 150 ° C. or higher, Furthermore, it is preferable to use spherical colored resin fine particles having an intramolecular cross-link having a melt flow index value of less than 0.1 and not sticky, and having an average particle diameter of 3 to 15 μm. is there. Moreover, when the average particle diameter of the colored resin particles is less than 2 μm, it is not preferable because it easily enters the gaps in the paper fibers and the erasability is lowered. In addition, if the average particle diameter of the colored resin particles exceeds 20 μm, the erasability is improved, but the concentration as an ink is decreased, the colored resin particles are easily precipitated, and the stability over time is improved. This is not preferable because of problems such as damage to the surface and poor feeling during writing. By making the average particle diameter of these colored resin particles 2 to 20 μm and using a non-thermoplastic material, it stays in the vicinity of the paper surface for the first time without going deep into the fiber of the paper and is easily removed by an eraser. Will be able to.

  As a material for forming the first operation member 60 as an erasing member or a friction body, thermosetting rubber such as silicone rubber, nitrile rubber, ethylene propylene rubber, ethylene propylene diene rubber, styrene elastomer, olefin elastomer, polyester elastomer Examples thereof include rubber elastic materials such as thermoplastic elastomers, mixtures of two or more rubber elastic materials, mixtures of rubber elastic materials and synthetic resins, commercially available erasers, and the like. When the first operation member 60 is a thermochromic writing instrument, it is used in the wear wheel CS-17 of the Taber abrasion tester under the load of 9.8 N and 1000 rpm of the abrasion test (ASTM D1044) specified in JIS K7204. It is preferable that the Taber abrasion amount is 10 mg or more and the durometer D hardness specified in JIS K6203 is 30 or more because stable erasure can be achieved without damaging the paper surface.

  Note that “erasing” here means that the drawn strokes, characters, etc. are adsorbed or scraped off by an erasing portion such as an eraser, in addition to the case where the thermochromic ink is used. Further, the first operation member 60 may be configured to be used as a capacitive touch pen by providing conductivity to a pressure-sensitive touch pen or a shaft tube instead of the erasing member. Therefore, the present invention can also be applied to any writing instrument that erases a drawn stroke using an erasing member.

DESCRIPTION OF SYMBOLS 1 Writing instrument 2 Front shaft 3 Rear shaft 4 Shaft cylinder 5 Refill 6 1st spring 7 2nd spring 8 Spring support member 10 Tail plug 20 Clip member 30 Knock member 40 Rotor 50 Cam ring 60 1st operation member

Claims (6)

A shaft cylinder, a writing body, a first operation member, and a second operation member, and a writing position and a non-writing position of the writing body by a knock operation that presses the first operation member or the second operation member forward. Can be switched knock-type writing instrument,
A knock operation is possible using either the first operation member or the second operation member,
During the knock operation of the second operation member, the first operation member and the second operation member are engaged to perform the knock operation of the first operation member.
The knocking writing instrument, wherein the first operating member and the second operating member are not engaged when the first operating member is knocked.   The first operating member has a receiving surface, and the second operating member has a pressing surface that can be engaged with the receiving surface only when the second operating member moves forward. Item 10. A knocking type writing instrument according to item 1. A rotor biased rearward together with the cursive body, the rotor moving in the front-rear direction and rotating in the circumferential direction in response to a knocking operation of the first operating member;
A cam member that is arranged so as to be movable in the front-rear direction in the axial cylinder in response to a knocking operation of the second operation member and biased rearward,
A first cam portion is formed on the shaft cylinder, a second cam portion is formed on the rotor, and a third cam portion is formed on the cam member;
The first cam portion, the second cam portion and the third cam portion cooperate to switch between the writing position and the non-writing position of the writing body,
When the knocking operation of the first operation member is performed at the non-writing position of the writing body, the second cam portion of the rotor is engaged with the first cam portion of the shaft cylinder, and the rotor The rearward movement is restricted and the rotation of the rotor is restricted by engaging the third cam portion of the cam member, whereby the writing body maintains the writing position,
When the knocking operation of the first operation member or the second operation member is performed at the writing position of the cursive body, the restriction by the cam member is released, and the rotor moves rearward after rotating. The knock type writing instrument according to claim 2, wherein the writing body moves to a non-writing position.   The said 2nd operation member is provided in the side surface of the said shaft cylinder, The said 1st operation member is provided in the rear-end part of the said shaft cylinder, The any one of Claim 1 thru | or 3 characterized by the above-mentioned. Knock-type writing instrument described in 1.   The knock-type writing instrument according to claim 4, wherein the first operation member is a cap of a refill storage container.   The knock type writing instrument according to any one of claims 1 to 5, wherein the first operation member includes an erasing member.

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