JP5722133B2 - Fountain pen, writing unit and case - Google Patents

Description

  The present invention relates to a fountain pen, and more particularly to a fountain pen with excellent design. The present invention also relates to a writing unit and a case used for a fountain pen excellent in design.

  Conventionally, a fountain pen has been used as a writing instrument (for example, Patent Document 1). The fountain pen has a shaft cylinder capable of storing ink and a pen tip provided at the tip of the shaft cylinder, and can be used semi-permanently by refilling the inside of the shaft cylinder. Many fountain pens have caps for the purpose of preventing ink drying and ink scattering. Also, for the purpose of facilitating ink replenishment and maintenance, fountain pens generally have a structure that can be divided in the axial direction, and the fountain pen shaft cylinder has a circumferential joint. Becomes visible.

  As described above, the structure of many conventional fountain pens has been restricted in comparison with other writing instruments and the like due to problems specific to fountain pens. As a result, it has not been possible to greatly change the appearance design of conventional fountain pens and impart a new excellent design.

JP2007-176110A

  The present invention has been made in consideration of the above points, and an object thereof is to provide a fountain pen having excellent design properties. It is another object of the present invention to provide a fountain pen case and writing unit that can impart excellent design to a fountain pen.

The fountain pen according to the present invention is
A writing body having a pen tip, a storage body in which the writing body can be taken out and slidably accommodated, and an opening in which the pen tip enters and exits is formed, and the opening in the housing body is opened and closed. A writing unit, comprising: a closing lid attached to a body and biased to close the opening; and an operating body operably provided in the container;
A case in which the writing unit is removably accommodated, and a case is formed with a tip opening through which the pen tip coming out of the opening of the writing unit passes,
The case is a side opening that extends in the axial direction and is formed with a side opening for allowing the writing unit to be removed; a case lid that is removably attached to the case body; An operation body operably provided on the case body,
The operating body is operable in conjunction with the operation of the operating body with respect to the case body by engaging the operating body in a state where the writing unit is accommodated in the case.
By operating the operating body via the operating body, the pen tip of the writing body extends from the tip opening of the case, and the pen tip of the writing body is positioned in the writing unit. At the same time, it is possible to maintain the opening of the container in any unused state in which the opening is closed by the closing lid.

In the fountain pen according to the present invention,
The case body and the case lid body each have a ridge extending in the axial direction, and the ridges of the case body and the case lid body are pivoted in a state where the case body and the case lid body are overlaid. Engage by relative movement in the direction to regulate the relative movement of the case body and the case lid in the radial direction orthogonal to the axial direction,
A recess is formed in one of the case body and the case lid, and a locking projection is provided at a position facing the other recess of the case body and the case lid, and the recess and the engagement The stop protrusion is engaged by the relative movement of the case body and the case lid in the axial direction in a state where the protrusions of the case body and the case lid are engaged with each other, and You may make it regulate the relative movement of a case main body and the said case cover body.

In the fountain pen according to the present invention,
A pair of the locking protrusions are provided on the case body, and a pair of the recesses are provided on the case lid.
The case main body includes an outer member that forms an outer surface of the case, an inner member disposed inside the outer member, and a U-shaped metal piece that extends along the inner surface of the outer member,
Both ends of the metal piece may form the pair of locking projections, and a portion between the both ends of the metal piece may be sandwiched between the outer material and the inner material.

In the fountain pen according to the present invention,
The writing unit includes a positioning piece provided in the container so as to be slidable in the axial direction, and an elastic member provided in the container and compressed in the axial direction between an inner wall of the container and the positioning piece. And having
When the writing unit is accommodated in the case, the positioning piece may be urged in the axial direction by the elastic member to abut against the inner wall of the case.

In the fountain pen according to the present invention,
The writing unit further includes a sliding body that is provided on the operating body and is slidable with respect to the operating body, and an elastic member that biases the sliding body,
The sliding body is urged toward the operating body by the elastic member when the writing unit is accommodated in the case, and engages with the operating body and slides along with the operation of the operating body. And
The case body has a guide for guiding the sliding of the sliding body, and the sliding body has an engaging portion that engages with the guide,
The engaging portion may be detachable from the guide in a part of the movable range along the guide.

  In the fountain pen according to the present invention, when the writing unit is housed in the case and in the non-use state, the position where the sliding body is most separated from the operating body against the bias of the elastic member and the vicinity thereof If it arrange | positions in the position, the said engaging part of the said sliding body may be detachable from the said guide of the said case main body.

In the fountain pen according to the present invention,
The operating body includes a main body having a first surface facing an inner wall of the case main body and a second surface opposite to the first surface and facing the sliding body, the first surface, and the first surface. A pin that penetrates the main body in a direction connecting the two surfaces and is slidable with respect to the main body,
The pin is biased from the second surface side toward the first surface side so as to protrude from the first surface side,
The case main body is configured to receive the pin protruding from the first surface of the main body at a position facing the pin of the operation body when the writing unit is accommodated in the case and is not in use. A stop recess may be formed.

  In the fountain pen according to the present invention, the sliding body may be formed with a connecting recess for receiving the pin protruding from the second surface of the main body at a position facing the pin of the operating body.

In the fountain pen according to the present invention,
The writing unit includes a main elastic member provided in the housing body and biasing the writing body in a direction away from the opening, and an intermediate member provided between the writing body and the operating body in the housing body. And
The inner wall of the container is provided with an engagement step that can be engaged with the intermediate member,
The intermediate member engages with the engagement stage or is disengaged from the engagement stage in accordance with the operation of the operation body. When the engagement with the engagement stage is released and the main elastic member is released from the engagement position toward the side of the operating body when the engagement with the engagement stage is released,
An absorbing mechanism for absorbing the elastic force of the main elastic member may be provided between the operating body and the intermediate member.

  In the fountain pen according to the present invention, a cushion material may be provided on the back surface of the case lid.

In the fountain pen according to the present invention,
The case further includes a clip attached to one of the case body and the case lid,
The clip has a contact portion that comes into contact with the case main body or the case lid body at a position separated from the mounting position to either the case main body or the case lid body,
The case main body or the case lid may include a metal outer material forming an outer surface of the case, and a hole may be formed at a position facing the contact portion of the outer material.

In the fountain pen according to the present invention,
The case body has a cylindrical portion that defines the tip opening at an axial end,
The case lid has a hooking projection that is inserted into the cylindrical portion of the case body when the case lid is attached to the case body,
A receiving groove having a size capable of inserting the hooking protrusion may be formed in the main body of the operating body.

  The writing unit according to the present invention is a writing unit incorporated in any of the fountain pens according to the present invention described above.

  The case according to the present invention is a case incorporated in any of the fountain pens according to the present invention described above.

  According to the present invention, the design of the appearance of a fountain pen can be improved.

FIG. 1 is a longitudinal sectional view showing a fountain pen in a non-use state. FIG. 2 is a longitudinal sectional view showing the fountain pen in use. FIG. 3 is a longitudinal sectional view showing the writing unit of the fountain pen. FIG. 4 is a longitudinal sectional view showing a case body of a fountain pen case. FIG. 5 is a longitudinal sectional view showing a case lid of a fountain pen case. FIG. 6 is a cross-sectional view showing a fountain pen case, and shows a cross-section of the case at AA in FIGS. 4 and 5. FIG. 7 is a perspective view showing a state in which the case lid is removed from the case main body. FIG. 8 is a perspective view showing a state where the writing unit is taken out from the case. FIG. 9 is a longitudinal sectional view showing a state where the engagement between the case body of the case and the sliding body of the writing unit is released. FIG. 10 is a longitudinal sectional view showing a state before the engagement between the case body of the case and the sliding body of the writing unit is released. FIG. 11 is a longitudinal sectional view showing the writing unit. FIG. 12 is a schematic diagram for explaining the engagement between the intermediate member of the writing unit and the engagement stage. FIG. 13 is a diagram corresponding to FIG. 6 and illustrating a modified example of the case. FIG. 14 is a partial vertical cross-sectional view of a fountain pen, and is a view for explaining a modification of the operation body of the case. FIG. 15 is a view for explaining the operation of the operating body shown in FIG.

  1 to 12 are diagrams for explaining an embodiment of the present invention, and FIGS. 13 to 15 are diagrams for explaining a modification to the embodiment shown in FIGS. FIG. Hereinafter, a fountain pen and a modification thereof according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1-12, the fountain pen 10 has the writing unit 50 and the case 15 which accommodates the writing unit 50 so that extraction is possible. The writing unit 50 includes a writing body 55 having an ink storage section 57 for storing ink and a pen tip 56 to which ink is supplied from the ink storage section 57, and a writing body 55 that can be taken out and slidable. A container 60 formed with an opening 60a through which the tip 56 enters and exits, a closing lid 68 attached to the container 60 so as to be able to open and close the opening 60a of the container 60, and biased to close the opening 60a; 60, and an operating body (slide cam) 70 provided to be operable. On the other hand, the case 15 is provided so as to be operable in the case body 20 formed with a side opening 20 a extending in the axial direction, a case lid (door) 35 detachably attached to the case body 20, and the case body 20. And an operating body 40. The fountain pen 10 has a longitudinal direction, and in the present specification, this longitudinal direction is referred to as an axial direction. The side (direction) of the pen tip 56 in the axial direction is referred to as the front side (front), and the side (direction) opposite to the pen tip 56 in the axial direction is referred to as the rear side (rear).

  The operating body 70 of the writing unit 50 is operable in accordance with the operation of the operating body 40 with respect to the case body 20 by engaging with the operating body 40 of the case 15 in a state where the writing unit 50 is accommodated in the case 15. Yes. Then, by operating the operating body 70 via the operating body 40, the use state (writing state) in which the pen point 56 of the writing body 55 extends from the tip opening 15 a of the case 15, and the pen point 56 of the writing body 55 It is possible to maintain either the unused state (portable state) in which the opening 60a of the containing body 60 is closed by the closing lid 68 while being located in the containing body 60. Hereinafter, the configuration and operation of the fountain pen 10 will be described in more detail.

  First, the configuration of the case 15 of the fountain pen 10 will be described. As shown in FIG. 4, the case main body 20 of the case 15 has a cylindrical portion 27 that surrounds the front end portion of the writing unit 50 from the periphery, and a tip opening 15 a is formed at the front end portion of the cylindrical portion 27. Is formed. Further, as shown in FIG. 4, a side opening 20 a is formed on the side of the case body 20. The side opening 20a extends to the rear end in the axial direction, and has a size through which the writing unit 50 mounted on the case body 20 can pass.

  As shown in FIG. 6, the case lid 35 can be attached to the case body 20 so as to close the side opening 20 a of the case body 20. As shown in FIGS. 4 to 7, the case main body 20 and the case lid 35 have ridges 28 and 36 extending in the axial direction, respectively. The ridges 28 of the case main body 20 and the ridges 36 of the case lid 35 are engaged by moving relative to each other in the axial direction in a state where the case main body 20 and the case lid 35 are overlapped. By the engagement of the ridges 28 and 36, the relative movement of the case main body 20 and the case lid 35 in the radial direction orthogonal to the axial direction is regulated.

  Further, as shown in FIGS. 4 to 7, a recess 37 is formed in one of the case body 20 and the case lid 35, and the position facing the other recess 37 of the case body 20 and the case lid 35 is related to the position. A stop projection 23a is provided. In the illustrated example, a locking projection 23 a is provided on the case body 20, and a recess 37 is formed on the case lid 35. The recess 37 and the locking projection 23a are engaged when the case main body 20 and the case lid 35 are relatively moved in the axial direction so that the protrusions 28 and 36 of the case main body 20 and the case lid 35 are engaged with each other. can do. Then, the relative movement of the case main body 20 and the case lid 35 in the axial direction is restricted by the engagement between the locking projection 23 a and the recess 37.

  As described above, the engagement by the pair of protrusions 28 and 36 and the engagement by the recess 37 and the locking projection 23a cause both the axial direction and the radial direction between the case main body 20 and the case lid 35. The relative movement is restricted, and the attachment of the case lid 35 to the case body 20 can be stably maintained. Thereby, it can suppress more effectively that the case cover body 35 will remove from the case main body 20 unintentionally. In particular, in the illustrated example, the depression 37 is formed on the upper surface of the ridge 36. That is, the recess 37 and the locking projection 23a are locked to each other at a site where unintended deformation is effectively suppressed by the engagement of the protruding line 28 and the protruding line 36. For this reason, even if an unintended external force is applied, the engagement state between the locking projection 23a and the recess 37 is stably maintained, and the case lid 35 is unintentionally detached from the case body 20. Can be more effectively prevented.

  As shown in FIG. 4, the case body 20 includes an outer member 21 that forms the outer surface of the case 15, an inner member 22 disposed inside the outer member 21, and a U-shaped metal piece that extends along the inner surface of the outer member 21. 23. The end of the metal piece 23 forms a locking projection 23 a that engages with the recess 37 of the case lid 35. As shown in FIGS. 6 and 7, the metal piece 23 is sandwiched between the outer member 21 and the inner member 22, preferably a part other than both ends of the locking projection 23 a, preferably all other parts. According to such a structure, it becomes possible for the edge part of the metal piece 23 to maintain desired elasticity over a long period of time, and it is stable that the case cover body 35 will remove from the case main body 20 unintentionally. Can be prevented.

  As shown in FIG. 5, the case lid 35 also has an outer member 35 a that forms the outer surface of the case 15, and an inner member 35 b that is disposed inside the outer member 35 a. Since the case main body 20 and the case lid 35 have the outer members 21 and 35a and the inner members 22 and 35b, the case 15 is designed while the inner members 22 and 35b are designed so that a desired rigidity can be imparted to the case 15. It is possible to design the outer materials 21 and 35a so that excellent design properties can be imparted.

  As shown in FIGS. 4, 8 and 9, the case body 20 has a guide 25 for supporting the operating body 40. A pair of guides 25 are provided at positions facing each other on the inner wall of the case body 20 and extend linearly along the axial direction. Each guide 25 is composed of a pair of rails 25a and 25b. As shown in FIG. 4, the rail 25a from the side opening 20a is interrupted at the missing portion 25a1.

  As shown in FIG. 9, the operating body 40 operable on the case body 20 has a pair of slide engagement strips 43 disposed on the pair of rails 25 a and 25 b of each guide 25. The slide engagement strip 43 extends linearly and is slidable with respect to the guide 25. The operating body 40 is slidably mounted on the case body 20 by fitting the slide engagement strip 43 into the guide 25.

  As shown in FIGS. 1 and 2, the operating body 40 includes a main body portion 41 provided with a slide engagement strip 43, a knob 42 protruding from the case main body, and a pin 45 incorporated in the main body portion 41. Have. The main body 41 has a first surface 41a facing the inner wall of the case body 20, and a second surface 41b opposite to the first surface 41a and facing a sliding body 90 (to be described later) of the writing unit 50. ing. The pin 45 extends in a direction connecting the first surface 41a and the second surface 41b and is slidable in the direction. The pin 45 has a length that penetrates the main body 41 and protrudes from either the first surface 41a or the second surface 41b. The pin 45 is urged from the second surface 41b side to the first surface 41a side by an elastic member (not shown) such as a spring so as to protrude from the first surface 41a side.

  On the other hand, the case main body 20 is formed with a locking recess 20 b that receives the pin 45 protruding from the first surface 41 a of the main body 41. As shown in FIG. 1, the pin 45 is engaged with the case body 20 when the operating body 40 is disposed at the position closest to the rear side in the axial direction within the range in which the operation body 40 can slide with respect to the case body 20. It faces the locking recess 20b and enters the locking recess 20b. In addition, when the writing unit 50 is accommodated in the case 15 and is not in use, the operation body 40 is disposed at a position closest to the rear side in the axial direction within a range in which the operation body 40 can slide with respect to the case body 20. The pin 45 extends into the locking recess 20b. When the pin 45 engages with the locking recess 20, the operation body 40 is restricted from freely moving with respect to the case body 20.

  However, the tip of the pin 45 on the side of the locking recess 20b is formed in a curved surface shape. Further, when the operating body 40 is operated from a state where the pin 45 is engaged with the locking recess 20b, the surface of the locking recess 20b with which the pin 45 comes into contact is an inclined surface. For this reason, when an operating force is intentionally applied to the operation body 40 in the axial direction, the engagement between the pin 45 and the locking recess 20b is released, and the operation body 40 is slid with respect to the case body 20. be able to.

  Further, the case 15 has a clip 30 attached to one of the case main body 20 and the case lid 35. In the illustrated example, the clip 30 has a contact portion 31 a that is attached to the case body 20 and comes into contact with the case body 20 at a position away from the attachment position to the case body 20. A through hole 33 is formed in the outer member 21 of the case body 20 at a position facing the contact portion 31a. Conventionally, the outer surface of a metal fountain pen, particularly the outer surface of a fountain pen that has been surface-treated to increase the sense of quality, such as a satin finish, may be scratched by the abutment portion of the clip. The luxury of the fountain pen was greatly impaired. For such a problem, when the through hole 33 is provided in the portion of the outer member 21 that comes to face the contact portion 31a, it is possible to prevent the occurrence of scratches due to the clip 30, and as a result, Maintains the luxury of a fountain pen.

  Next, the writing unit 50 will be described. As described above, the writing unit 50 includes the container 60 having the opening 60 a, the writing body 55 that is removably accommodated in the container 60, and the operating body 70 provided in the container 60. doing. The writing body 55 includes an ink storage unit 57 that stores ink, and a pen tip 56 that is supplied with ink from the ink storage unit 57. The container 60 includes a front cylinder 61 and a rear cylinder 62 that are detachably connected to each other. The front cylinder 61 is formed with an opening (front opening) 60a through which the pen tip of the writing body 55 passes. An opening / closing lid 68 for closing the opening 60a is swingably provided on the front cylinder 61. The opening / closing lid 68 is biased toward a position for closing the opening 60a by an elastic member (closing elastic member) 69 made of, for example, a torsion spring. A part of the operating body 70 extends to the outside of the housing body 60 through a rear opening formed at the rear end of the rear cylinder 62 of the housing body 60. The operation body 70 is slidable in the axial direction with respect to the housing body 60.

  As shown in FIG. 3, the writing unit 50 includes a main elastic member (for example, a spring) 51 that is provided in the housing 60 and biases the writing body 55 in a direction away from the opening 60 a, and writing in the housing 60. And an intermediate member 80 provided between the body 55 and the operating body 70. The main elastic member (main spring) 51 urges the writing body 55, the intermediate member 80, and the operating body 70 rearward along the axial direction. An engagement step 64 that can engage with the intermediate member 80 is provided on the inner wall of the container 60. When the intermediate member 80 is engaged with the engagement step 64, the closing lid 68 is pushed and the pen point 56 of the writing body 55 is maintained in a state of protruding from the opening 60 a of the housing body 60. Yes. In particular, in the illustrated example, when the intermediate member 80 is operated by the operating body 70, the writing unit 50 pushes open the closing lid 68 and the pen point 56 of the writing body 55 protrudes from the opening 60 a of the container 60. The state and the state in which the writing body 55 is disposed in the container 60 and the closing lid 68 closes the opening 60a are alternately taken. The feeding of the pen tip 56 by the operation of the operating body 70 (knock-type feeding) can be realized by the configuration shown in FIGS. 11 and 12 as an example. Hereinafter, an example of a pen tip feeding mechanism will be described with reference to FIGS. 11 and 12.

  As shown in FIG. 12, on the inner wall of the rear cylinder 62 of the housing 60, a first engagement groove 65a extending in the axial direction, a second engagement groove 65b having a depth different from the first engagement groove 65a, Is formed. The first engagement grooves 65a and the second engagement grooves 65b are alternately formed on the inner wall of the container 60 at a constant pitch along the circumferential direction. On the other hand, as shown in FIGS. 11 and 12, the operating body 70 has guide protrusions 71 slidable in the axial direction in the engaging grooves 65a and 65b, in the circumferential direction, the same as the engaging grooves 65a and 65b. It is formed with a pitch. Due to the engagement between the guide protrusion 71 and the engagement grooves 65 a and 65 b, the operating body 70 can slide in the axial direction with respect to the storage body 60. The end face on the front side in the axial direction of the operating body 70 is formed as a concave / convex surface, and a convex / convex portion 72 of the concave / convex surface is provided at a position shifted in the axial direction from the guide projection 71. The operating body 70 functions as a slide cam and operates the intermediate member 80 via the convex portion 72.

  As shown in FIGS. 11 and 12, the intermediate member 80 has a cam protrusion 81 that is in contact with the convex portion 72 and protrudes in the radial direction. The cam protrusions 81 are provided in the circumferential direction at the same pitch as the first engagement grooves 65a, in other words, at the same pitch as the second engagement grooves 65b. That is, the arrangement pitch of the cam projections 81 in the circumferential direction is twice the arrangement pitch of the convex portions 72 of the operating body 70 in the circumferential direction. The cam protrusion 81 is configured to slide in the second engagement groove 65b as shown in the left side view of FIG. 12, while the second engagement groove 65b is shown in the right side view of FIG. The first engagement groove 65a is shallower than the first engagement groove 65a. A contact surface (a rear surface in the axial direction) 82 of the cam projection 81 that comes into contact with the convex portion 72 of the operating body 70 is formed as an inclined surface inclined in a certain direction. Further, the engagement step 64 formed in the rear cylinder 62 of the container 60 is provided between the two adjacent second engagement grooves 65b, and is axially rearward on the contact surface 82 of the cam protrusion 81 of the intermediate member 80. Will come in contact. The engaging step 64 is formed in a sawtooth shape, and a sliding surface 82a inclined to the same side as the contact surface 82 of the cam projection 81 and a locking surface extending in the axial direction and connecting between the two sliding surfaces 82a. 82b.

  According to such a configuration, when the cam protrusion 81 of the intermediate member 80 faces the second engagement groove 65 b of the housing body 60, the cam protrusion 81 is moved to the second engagement groove by the urging force from the main elastic member 51. The intermediate member 80 slides in the axial direction rearward with respect to the housing body 60 by sliding in 65b (left side view of FIG. 12). At this time, the writing body 55 also slides rearward in the axial direction together with the intermediate member 80 by the urging force from the main elastic member 51, the writing body 55 is completely disposed in the housing body 60, and the opening 60 a is formed by the closing lid 68. Closed.

  From this state, when the operating body 70 is slid forward in the axial direction, the cam projection 81 of the intermediate member 80 comes out from the second engagement groove 65b of the housing body 60 in the axial direction forward. At this time, the biasing force of the main elastic member 51 is such that the inclined contact surface 82 of the cam projection 81 of the intermediate member 80 slides against the convex portion 72 of the uneven surface of the operating body (slide cam) 70. Rotate 80. As shown in the right side view of FIG. 12, the rotation of the intermediate member 80 is caused by the contact surface 82 sliding on the sliding surface 64 a of the locking step 64 and the cam protrusion 81 being engaged by the locking surface 64 b of the locking step 64. Continue until stopped. As shown in FIGS. 11 and 2, in the state where the cam projection 81 is locked by the locking surface 64 b of the locking step 64, the intermediate member 80 is axially forward with respect to the container 60 together with the writing body 55. Is sliding. At this time, the pen point 56 of the writing body 55 is maintained in a state where the closing lid 68 is pushed open to extend from the opening 60 a of the container 60. In this state, as shown in the right side view of FIG. 12, the cam protrusion 81 is disposed at a position facing the first engagement groove 65a.

  When the operating body 70 is further slid forward in the axial direction from the state of the right side of FIG. 12, the cam projection 81 of the intermediate member 80 gets over the locking surface 64b of the engaging step 64, and the intermediate member 80 can rotate again. It becomes. As shown in the left side view of FIG. 12, the rotation of the intermediate member 80 causes the contact surface 82 to slide on the sliding surface 64 a of the locking step 64, and the cam protrusion 81 to the second engaging groove 65 b of the container 60. It continues until it enters. By operating the operating body 70 as described above, the engagement between the intermediate member 80 functioning as a rotating cam and the engagement stage 64 and the disengagement between the intermediate member 80 and the engagement stage 64 are repeated. As a result, the pen tip 56 repeatedly appears and disappears from the container 60.

  Next, the configuration of the writing unit 50 will be described. As shown in FIG. 3, the intermediate member 80 has a shaft portion 83 that extends rearward in the axial direction. On the other hand, the operating body 70 has a hollow portion 73 that receives the shaft portion 83 of the intermediate member 80. The shaft portion 83 has an enlarged diameter portion 83a whose outer diameter is enlarged, and the hollow portion 73 has a reduced diameter portion 73a whose inner diameter is reduced. For this reason, as shown in FIG. 2, the shaft portion 83 of the intermediate member 80 does not come out of the hollow portion 73 of the operating body 70. An elastic member (for example, a spring) 79 compressed in the axial direction is provided between the intermediate member 80 and the operating body 70. The urging force of the elastic member (inner elastic member) 79 between the intermediate member 80 and the operating body 70 is smaller than the urging force of the main elastic member 51. Therefore, when the intermediate member 80 is disengaged from the engagement stage 64 in accordance with the operation of the operating body 70, the intermediate member 80 moves from the locking position locked to the engagement stage 64 by the main elastic member 51. It is shot towards the body 70. In order to absorb such elastic force, in order to absorb the elastic force of the main elastic member 51 between the operating body 70 and the intermediate member 80, more specifically, in the hollow portion 73 of the operating body 70. The absorption mechanism 97 is provided. The absorbing mechanism 97 can be constituted by, for example, a combination structure of an elastic member such as a spring and a receiving member supported by the elastic member shown in FIG. 3, an elastic member such as a spring, a member made of a low repulsion material, or the like.

  3 and 8, the writing unit 50 includes a sliding body 90 provided on the operating body 70 and slidable with respect to the operating body 70, and between the sliding body 90 and the operating body 70. And an elastic member (for example, a spring) 89 disposed therein. An elastic member (induction elastic member) 89 between the sliding body 90 and the operating body 70 biases the sliding body 90 rearward in the axial direction. The sliding body 90 has a cylindrical slider 92 provided on the operating body 70, and a knob cover 91 connected to the cylindrical slider 92.

  As shown in FIGS. 1 and 2, the knob cover 91 covers the main body 41 of the operating body 40 from the second surface 41 b side by the urging force of the elastic member 89 when the writing unit 50 is accommodated in the case 15. Placed in position. The knob cover 91 is formed with a connecting recess 94 that receives the pin 45 protruding from the second surface 41 b of the main body 41 of the operating body 40 at a position facing the pin 45 of the operating body 40. Therefore, when the operating body 40 is slid forward in the axial direction, the pin 45 protrudes from the second surface 41 b of the main body 41 and enters the coupling recess 94 of the knob cover 91. For this reason, when operating the operating body 40 in a state where the writing unit 50 is accommodated in the case 15, the sliding body 90 engages with the operating body 40 and slides along with the operation of the operating body 40. Become.

  As shown in FIGS. 8 to 10, the sliding body 90 has a pair of engaging portions (engaging protrusions) 93 that respectively engage with a pair of guides 25 provided on the case body 20. . Each engaging portion 93 can slide in the axial direction between a pair of rails 25 a and 25 b forming the guide 25 on the corresponding side. Then, the engaging portion 93 extends from the guide 25 in a partial section within the movable range along the guide 25, specifically, in a missing portion (notch portion) 25a1 formed in the lower rail 25a. It is possible to leave. For this reason, when the sliding body 90 of the writing unit 50 is engaged with the guide 25 of the case main body 20, it is possible to effectively prevent the writing unit 50 from being unintentionally detached from the case main body 20. Since the operation of the sliding body 90 is guided by the guide 25 as in the case of the operating body 40, the operation of the operating body 40 and the sliding body 90 is smooth.

  In particular, in the illustrated example, when the writing unit 50 is accommodated in the case 15 and is not in use, that is, the writing unit 50 is accommodated in the case 15 and the cam protrusion 81 of the intermediate member 80 is formed in the housing 60. When the sliding body 90 is not locked to the engaging step 64 and is disposed at a position farthest from the operating body 40 against the urging force of the elastic member 89 and a position in the vicinity thereof, the sliding body 90 The engaging portion 93 faces the missing portion 25 a 1 of the guide 25 and can be detached from the guide 25. In other words, when the writing unit 50 is accommodated in the case 15 and is not in use, when the fountain pen 10 is not applied with an external force, the sliding body 90 is urged by the elastic member 89 to be engaged with the engaging portion 93. Is disposed at a position where it cannot be detached from the guide 25 of the case body 20. Therefore, it is possible to effectively prevent the writing unit 50 from being unintentionally detached from the case body 20. On the other hand, since the sliding body 90 of the writing unit 50 can be detached from the guide 25 of the case body 20 when the sliding body 90 is pushed all the way forward in the axial direction, the writing unit 50 can be easily detached from the case body 20. It can also be done.

  Further, as shown in FIGS. 1, 2, and 8, the writing unit 50 is provided in the housing body 60 and a positioning piece (positioning member) 66 slidably provided in the housing body 60 in the axial direction. And an elastic member (for example, a spring) 67 compressed in the axial direction between the inner wall of the container 60 and the positioning piece 66. As can be understood from FIG. 8, the positioning piece 66 is configured as a cylindrical member penetrating the operating body 70. When the writing unit 50 is accommodated in the case 15, the positioning piece 66 is urged rearward in the axial direction by the elastic member (positioning elastic member) 67 to position the inner wall of the case 15, more specifically, the positioning of the case main body 20. It contacts the step 29 (see FIG. 4). With such a configuration, the writing unit 50 can be positioned in the axial direction in the case 15.

  The operating body 70 that passes through the cylindrical positioning piece 66 holds an O-ring 78. As shown in FIG. 1, when the cam projection 81 of the intermediate member 80 is not locked to the engaging step 64 of the housing body 60, the operating body 70 biased by the main elastic member 51 is an O-ring 78. Then, the positioning piece 66 is urged rearward in the axial direction. That is, when not in use, the positioning piece 66 is pressed not only from the elastic member 67 between the positioning piece 66 and the container 60 but also from the main elastic member 51 toward the inner wall of the case 15. It becomes like this. Therefore, when the fountain pen 10 is carried, the writing unit 50 is effectively suppressed from moving in the case 15, and ink scattering or the like can be effectively prevented. The O-ring 78 suppresses ink drying in the container 60 when not in use, as with the closing lid 68.

  Further, in order to position the writing unit 50 in the radial direction in the case 15, a cushion material may be provided in the case 15. For example, a cushion material may be bonded to the inner surface of the case lid 35 of the case 15 or the inner surface of the case body 20. Furthermore, in order to position the writing unit 50 in the circumferential direction in the case 15, an engagement structure such as an unevenness may be formed on the writing unit 50 and the case 15.

  Next, the operation of the fountain pen 10 having the above configuration will be described. First, when the writing unit 50 is housed in the case 15, when switching from the non-use state of FIG. 1 to the use state of FIG. 2 or from the use state to the non-use state, a finger is applied to the knob 42 of the operating body 40. Then, the operating body 40 is pressed forward in the axial direction. The operating body 40 slides together with the sliding body 90 and contacts the operating body 70 to move the operating body 70 downward in the axial direction. Thereby, the fountain pen 10 can be switched from the non-use state to the use state. In the state of use, the nib 56 of the writing body 55 protrudes from the tip opening 15a of the fountain pen 10, and writing using the fountain pen 10 becomes possible. When writing is completed, the fountain pen 10 can be switched from the use state to the non-use state by pressing the operating body 40 forward in the axial direction and operating the operation body 70. In the unused state, the opening 60 a of the container 60 is closed by the closing lid 68, and the rear gap of the container 60 is closed by the O-ring 78 using the urging force of the main elastic member 51. This effectively prevents ink from drying up.

  When operating the operating body 40, the operating body 40 is engaged with the sliding body 90 via the pin 45 and the operation is guided to the guide 25 together with the sliding body 90. Therefore, the operation body 40 can be stably and smoothly operated, and the fountain pen 10 can be stably switched from the non-use state to the use state and from the use state to the non-use state.

  Further, when switching from the use state to the non-use state, when the engagement of the cam projection 81 of the intermediate member 80 with the engagement step 64 of the housing body 60 is released, the main elastic member 51 and the writing member 55 together with the intermediate member 80 is ejected toward the operating body 70. At this time, it is expected that the intermediate member 80 collides with the operating body 70 at a high speed, for example, the generation of a collision sound and further damage of the intermediate member 80 and the operating body 70. In particular, in a normal knock-type writing instrument, when the elastic force of the main elastic member is applied to the knock body for performing the knock operation, the user's finger rests on the knock body. Therefore, the finger receives the elastic force of the main elastic member applied in the axial direction from the axial direction, and the collision force and abnormal noise are absorbed by the finger. On the other hand, in the fountain pen 10 described here, it is also assumed that the user's finger is less likely to support the operating body 70 from the axial direction where the elastic force from the main elastic member 51 is applied in consideration of design and the like. Is done. Further, in the fountain pen 10 described here, the elastic force of the main elastic member 51 is set to be relatively strong so that the pen tip 56 is not sandwiched between the opening / closing lid 68 and the opening 60 of the writing unit 50. preferable. Therefore, in the fountain pen 10 described here, an absorbing mechanism 97 for absorbing the elastic force of the main elastic member 51 is provided between the operating body 70 and the intermediate member 80. The absorption mechanism 97 can effectively prevent a problem that the intermediate member 80 collides with the operating body 70 at a high speed.

  Further, in a non-use state, the operation body 40 is urged axially rearward together with the sliding body 90 by the elastic member 89. Further, when the operating body 40 is urged rearward in the axial direction by the elastic member 89, the pin 45 enters the locking recess 20b, and free movement is restricted. That is, the operating body 40 is held at a predetermined position in the non-use state. Thereby, when carrying the fountain pen 10 or the like, it is effective that the operating body 40 is knocked unintentionally and the writing body 55 of the writing unit 50 moves in the container 60 via the operation body 70. Can be prevented.

  Next, an operation when the writing unit 50 is removed from the case 15 will be described. First, the case lid 35 is removed from the case body 20. When the case lid 35 is removed, the sliding body 90 is urged axially rearward together with the operating body 40 by the elastic member 89. From this state, as shown in FIG. 10, the operating body 90 is slid forward in the axial direction against the urging force of the elastic member 89. At this time, since the operating body 40 is locked to the case main body 20 via the pin 45 and the operating body 40 and the sliding body 90 are not engaged, only the operating body 90 can be stably and easily. Can be moved. Therefore, the operating body 90 is moved to the forefront position along the axial direction in the movable range, and the protruding portion 93 of the operating body 90 faces the missing portion 25a1 of the guide rail 25 of the case body 20. it can. The writing unit 50 can be detached from the case body 20 by releasing the engagement of the operation body 90 with the case body 20 through such a simple operation. In addition, since the writing body 55 is accommodated in the container 60 in a non-use state, the scattered ink is difficult to adhere to the outer surface of the writing unit 50. Therefore, the user of the fountain pen 10 can carry out the above work very easily to take out the writing unit 50 from the case 15, and thereafter, can refill ink or perform maintenance of the writing body 55 at the nib. it can.

  Incidentally, as shown in FIG. 5, the case lid 35 has a hooking projection 38 that is inserted into the cylindrical portion 27 of the case body 20 when the case lid 35 is attached to the case body 20. On the other hand, as shown in FIG. 8, the main body 41 of the operation body 40 is formed with a receiving groove (hook groove) 44 having a size that allows the hook protrusion 38 of the case lid 35 to be inserted. Therefore, the writing projection 50 can be easily taken out from the case body 20 by inserting the hook protrusion 38 of the case lid 35 into the receiving groove 44 of the main body 41 of the operating body 40 and hooking it on the knob cover 91 of the sliding body 90. Can do.

  Next, the operation when the writing unit 50 is attached to the case 15 will be described. First, as shown in FIG. 9, the front end portion of the writing unit 50 is inserted into the cylindrical portion 27 of the case body 20. Thereafter, the sliding body 90 is slid so that the protruding portion 93 of the sliding body 90 faces the missing portion 25 a 1 of the guide 25 of the case body 20. Next, the writing unit 50 is arranged on the case body 20 so that the protruding portion 93 is inserted between the pair of rails 25a and 25b via the missing portion 25a1. Thereby, the writing unit 50 is accommodated in the case body 20 in a state where the sliding body 90 is engaged with the guide 25 of the case body 20. At this time, the positioning piece 66 biased by the elastic member 67 engages with the positioning step 29 of the case 15, and the writing unit 50 is automatically positioned in the case 15. Furthermore, while the writing unit 50 is mounted on the case main body 20, the operation body 40 on the case main body 20 is locked at a predetermined position via the pin 45. Therefore, the writing unit 50 can be easily attached to the case body 20.

  Thereafter, the case lid 35 is overlaid on the case main body 20, and the case lid 35 and the case main body 20 are relatively moved in the axial direction. Thereby, the relative movement in the axial direction and the radial direction between the case main body 20 and the case lid 35 is achieved by the engagement by the pair of ridges 28 and 36 and the engagement by the recess 37 and the locking projection 23a. And the mounting of the case lid 35 to the case body 20 can be stably maintained. Further, when the case lid 35 is attached to the case main body 20, the hooking protrusion 38 of the case lid 35 is inserted into the cylindrical portion 27 of the case main body 20. For this reason, mounting | wearing of the case cover body 35 to the case main body 20 is further stabilized. Thus, it is possible to more effectively suppress the case lid 35 from being unintentionally detached from the case main body 20. Further, when the writing unit 50 is attached to the case main body 20, the sliding body 90 is engaged with the guide 25 of the case main body 20, and the writing unit 50 is prevented from being unintentionally detached from the case main body 20. . For this reason, after the writing unit 50 is accommodated in the case main body 20, the attaching operation of the case lid 35 to the case main body 20 can be performed stably and easily.

  The fountain pen 10 in the present embodiment as described above has the writing unit 50 in which the pen tip 56 can be put in and out, and the case 15 that houses the writing unit 50. Therefore, prevention of ink drying from the writing body 55 and prevention of ink scattering in the unused state can be realized by the configuration of the writing unit 50. For this reason, structural restrictions on the case 15 are reduced, and the degree of freedom of design for the case 15 is very high. Thereby, the design property in the outstanding external appearance can be provided to the fountain pen 10. For example, it is possible to omit the circumferential joint that has been present in fountain pens from the outer surface of the fountain pen 10 and to give the fountain pen 10 a completely new appearance design.

  Note that various modifications can be made to the above-described embodiment. Hereinafter, an example of modification will be described with reference to the drawings. In the drawings used in the following description, the same reference numerals as those used for the corresponding parts in the above-described embodiment are used, and redundant descriptions are omitted.

  First, as shown in FIG. 13, the engagement method between the case body 20 and the case lid 35 may be changed. In the modification shown in FIG. 13, the pair of convex shapes 28 and 36 are omitted, and the case main body 20 and the case lid 35 are locked with each other only by the locking protrusions 23 a and the recesses 39. . In the modification shown in FIG. 13, the locking protrusion 23a is formed by both ends of a U-shaped metal piece, as in the above-described embodiment. On the other hand, the recess 39 is formed by a metal outer member 35 a of the case lid 35. The outer member 35a of the case lid 35 is formed so as to surround the inner member 35b from three directions. And when the latching protrusion 23a of the case body 20 is engaged with the recess 39 of the case lid 35 from the outside, the inner member 35b of the case lid 35 prevents the outer member 35a forming the recess 39 from falling inward. To do. Further, the locking projection 23a and the recess 39 are made of a metal having high rigidity. Therefore, according to the modification shown in FIG. 13, the case lid 35 can be attached to the case body 20 by an extremely simple operation of pushing the case lid 35 in the radial direction with respect to the case body 20. At the same time, the case lid 35 can be stably held by the case body 20.

  Next, as shown in FIGS. 14 and 15, the operating body 40 may be modified. 14 and 15, the operating body 40 is disposed between the main body 41, the movable knob member 48 provided on the main body 41, and the main body 41 and the movable knob member 48. And an elastic member (holding elastic member) 47. The main body 41 has a slide engagement strip (not shown) as in the above-described embodiment, and is attached to the case main body 20 so as to be slidable in the axial direction. On the other hand, unlike the above-described embodiment, the main body 41 is not provided with the fixed knob 42 but is provided with a movable knob member 48 instead. The movable knob member 48 has a base portion 48b that faces the case main body 20, and a knob portion 48a that extends from the axial rear end of the base portion 48b. The elastic member 47 is configured as a leaf spring, for example, and urges the base 48 b of the movable knob member 48 toward the case body 20. The case body 20 has a locking recess 20c that receives the base 48b at a position facing the base 48b of the movable knob member 48 of the operating body 40 when the writing unit 50 is accommodated in the case 15 and is not in use. Is formed.

  In such an example, as shown in FIG. 14, the operating body 40 is urged rearward in the axial direction together with the sliding body 90 by the elastic member 89 when not in use, as in the above-described embodiment. When the operating body 40 is moved rearward in the axial direction by the urging force from the elastic member 89, the base 48b of the movable knob member 48 urged by the elastic member 47 enters the locking recess 20c, and the operation body 40 freely moves. Movement is regulated. That is, the operating body 40 is held at a predetermined position in the non-use state.

  However, the surfaces of the base 48b and the locking recess 20c that start contact when the operating body 40 is operated from the state in which the base 48b of the movable knob member 48 is engaged with the locking recess 20c are formed as inclined surfaces. ing. For this reason, as shown in FIG. 15, when an operation force is intentionally applied to the operation body 40 in the axial direction, the engagement between the base 48b of the movable knob member 48 and the locking recess 20b is released, and the operation is performed. The body 40 can be slid with respect to the case main body 20.

  In addition, as shown in FIG. 15, the movable knob member 48 moves relative to the main body 41 against the urging force of the elastic member 47, so that the knob 48 a of the movable knob member 48 is removed from the main body 41. It protrudes and functions as a knob for operation. Thereby, the operation body 40 can be easily operated. On the other hand, as shown in FIG. 14, when the operating body 40 is not operated, there is no portion protruding from the operating body 40. Thereby, the design property excellent in the fountain pen 10 can be provided.

100 fountain pen 15 case 15a tip opening 20 case body 20a side opening 20b locking recess 21 outer material 22 inner material 23 metal piece 23a locking projection 25 guide 27 cylindrical portion 28 ridge 30 clip 35 case lid, door 36 ridge 37 Recess 40 Operating body 41 Main body 41a First surface 41b Second surface 42 Knob 45 Pin 50 Writing unit 51 Main elastic member, main spring 55 Writing body 56 Pen tip 60 Housing 60a Opening 64 Engagement step 66 Positioning piece, Positioning member 67 Elastic member (positioning elastic member)
68 Closing lid 70 Operating body, slide cam 80 Intermediate member, rotating cam 89 Elastic member (inductive elastic member)
90 Slide body 93 Engagement part, engagement protrusion part 94 Connection recessed part 97 Cushion mechanism

Claims (11)

A writing body having a pen tip, a storage body in which the writing body can be taken out and slidably accommodated, and an opening in which the pen tip enters and exits is formed, and the opening in the housing body is opened and closed. A writing unit, comprising: a closing lid attached to a body and biased to close the opening; and an operating body operably provided in the container;
A case in which the writing unit is removably accommodated, and a case is formed with a tip opening through which the pen tip coming out of the opening of the writing unit passes,
The case is a side opening that extends in the axial direction and is formed with a side opening for allowing the writing unit to be removed; a case lid that is removably attached to the case body; An operation body operably provided on the case body,
The operating body is operable in conjunction with the operation of the operating body with respect to the case body by engaging the operating body in a state where the writing unit is accommodated in the case.
By operating the operating body via the operating body, the pen tip of the writing body extends from the tip opening of the case, and the pen tip of the writing body is positioned in the writing unit. In addition, the fountain pen can be maintained in any of the unused state in which the opening of the container is closed by the closing lid. The case body and the case lid body each have a ridge extending in the axial direction, and the ridges of the case body and the case lid body are pivoted in a state where the case body and the case lid body are overlaid. Engage by relative movement in the direction to regulate the relative movement of the case body and the case lid in the radial direction orthogonal to the axial direction,
A recess is formed in one of the case body and the case lid, and a locking projection is provided at a position facing the other recess of the case body and the case lid, and the recess and the engagement The stop protrusion is engaged by the relative movement of the case body and the case lid in the axial direction in a state where the protrusions of the case body and the case lid are engaged with each other, and The fountain pen according to claim 1, wherein relative movement of the case main body and the case lid is restricted. A pair of the locking projections are provided on the case body, and a pair of the recesses are provided on the case lid.
The case main body includes an outer member that forms an outer surface of the case, an inner member disposed inside the outer member, and a U-shaped metal piece that extends along the inner surface of the outer member,
The fountain pen according to claim 2, wherein both ends of the metal piece form the pair of locking projections, and a portion between the both ends of the metal piece is sandwiched between the outer material and the inner material. The writing unit includes a positioning piece provided in the container so as to be slidable in the axial direction, and an elastic member provided in the container and compressed in the axial direction between an inner wall of the container and the positioning piece. And having
The said positioning piece is urged | biased to the axial direction by the said elastic member, and contact | abuts the inner wall of the said case when the said writing unit is accommodated in the said case. fountain pen. The writing unit further includes a sliding body that is provided on the operating body and is slidable with respect to the operating body, and an elastic member that biases the sliding body,
The sliding body is urged toward the operating body by the elastic member when the writing unit is accommodated in the case, and engages with the operating body and slides along with the operation of the operating body. And
The case body has a guide for guiding the sliding of the sliding body, and the sliding body has an engaging portion that engages with the guide,
The fountain pen according to any one of claims 1 to 4, wherein the engaging portion is detachable from the guide in a part of the movable range along the guide.   When the writing unit is housed in the case and in the non-use state, the sliding body is disposed at a position that is most separated from the operating body against the urging force of the elastic member and a position in the vicinity thereof. The fountain pen according to claim 5, wherein the engaging portion of the sliding body can be detached from the guide of the case body. The operating body includes a main body having a first surface facing an inner wall of the case main body and a second surface opposite to the first surface and facing the sliding body, the first surface, and the first surface. A pin that penetrates the main body in a direction connecting the two surfaces and is slidable with respect to the main body,
The pin is biased from the second surface side toward the first surface side so as to protrude from the first surface side,
The case main body is configured to receive the pin protruding from the first surface of the main body at a position facing the pin of the operation body when the writing unit is accommodated in the case and is not in use. The fountain pen according to claim 5 or 6, wherein a stop recess is formed.   8. The fountain pen according to claim 7, wherein the sliding body is formed with a connecting recess for receiving the pin protruding from the second surface of the main body at a position facing the pin of the operating body. The writing unit includes a main elastic member provided in the housing body and biasing the writing body in a direction away from the opening, and an intermediate member provided between the writing body and the operating body in the housing body. And
The inner wall of the container is provided with an engagement step that can be engaged with the intermediate member,
The intermediate member engages with the engagement stage or is disengaged from the engagement stage in accordance with the operation of the operation body. When the engagement with the engagement stage is released and the main elastic member is released from the engagement position toward the side of the operating body when the engagement with the engagement stage is released,
The fountain pen according to any one of claims 1 to 8, wherein an absorption mechanism for absorbing the elastic force of the main elastic member is provided between the operating body and the intermediate member. Cursive with a nib,
A container in which the writing body is slidably and slidably accommodated, and an opening through which the pen tip enters and exits is formed;
A closure lid attached to the receptacle so as to be able to open and close the opening of the receptacle and biased to close the opening;
An operating body operably provided in the container, and a writing unit comprising:
A fountain pen is housed in a case where a tip formed with a tip opening through which the pen nib from the opening of the writing unit passes is accommodated,
The case is a side opening that extends in the axial direction and is formed with a side opening for allowing the writing unit to be removed; a case lid that is removably attached to the case body; An operation body operably provided on the case body,
The operating body is operable in conjunction with the operation of the operating body with respect to the case body by engaging the operating body in a state where the writing unit is accommodated in the case.
By operating the operating body via the operating body, the pen tip of the writing body extends from the tip opening of the case, and the pen tip of the writing body is positioned in the writing unit. In addition, the writing unit can be maintained in any of the unused state in which the opening of the container is closed by the closing lid. A writing body having a pen tip, a storage body in which the writing body can be taken out and slidably accommodated, and an opening in which the pen tip enters and exits is formed, and the opening in the housing body is opened and closed. A writing unit having a closing lid attached to a body and biased to close the opening; and an operating body operably provided in the container; A tip opening is formed through which the pen nib from the opening passes, and the writing unit forms a fountain pen,
A case main body formed with a side opening for enabling removal of the writing unit, which is a side opening extending in the axial direction;
A case lid detachably attached to the case body;
An operating body operably provided on the case body,
The operating body is operable in conjunction with the operation of the operating body with respect to the case body by engaging the operating body in a state where the writing unit is accommodated in the case.
By operating the operating body via the operating body, the pen tip of the writing body extends from the tip opening of the case, and the pen tip of the writing body is positioned in the writing unit. In addition, the case can be maintained in any of the unused state in which the opening of the container is closed by the closing lid.

Images