EP1614547A2 - Writing Instrument - Google Patents
Writing Instrument Download PDFInfo
- Publication number
- EP1614547A2 EP1614547A2 EP04255507A EP04255507A EP1614547A2 EP 1614547 A2 EP1614547 A2 EP 1614547A2 EP 04255507 A EP04255507 A EP 04255507A EP 04255507 A EP04255507 A EP 04255507A EP 1614547 A2 EP1614547 A2 EP 1614547A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cap
- holder
- end portion
- tip end
- cam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K23/00—Holders or connectors for writing implements; Means for protecting the writing-points
- B43K23/08—Protecting means, e.g. caps
- B43K23/12—Protecting means, e.g. caps for pens
- B43K23/128—Protecting means, e.g. caps for pens with spring means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K5/00—Pens with ink reservoirs in holders, e.g. fountain-pens
- B43K5/005—Pen barrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K7/00—Ball-point pens
- B43K7/005—Pen barrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K8/00—Pens with writing-points other than nibs or balls
- B43K8/003—Pen barrels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K8/00—Pens with writing-points other than nibs or balls
- B43K8/02—Pens with writing-points other than nibs or balls with writing-points comprising fibres, felt, or similar porous or capillary material
- B43K8/028—Movable closure or gate
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
- A45D40/20—Pencil-like cosmetics; Simple holders for handling stick-shaped cosmetics or shaving soap while in use
Definitions
- the present invention relates to an instrument capable of protecting a tip end portion of a writing or applying medium held in a holder by covering the tip end portion with a cap when not in use.
- a cap is generally fitted onto a tip end portion of the holder to be attachable and detachable.
- Japanese Patent No. 2714780 proposes a capless writing instrument which can project and retreat a tip end writing portion with a knocking operation without a cap and includes a mechanism for preventing leakage, drying and backflow of ink.
- a guide through which a front part of the writing medium can penetrate is provided inside a body of the writing instrument so as to be movable in a longitudinal direction and to restrain the forward movement of a specified amount or more
- a seal lid of which inner surface is constituted by an elastic body is provided at a tip end of this guide so as to be openable and closable
- a string-shaped member is connected to the seal lid, so that the string-shaped member pulls the seal lid to closely attach the tip end of the writing medium to the elastic body of the seal lid when the writing medium is housed, and when the writing medium moves forward, pulling of the thread-shaped member is loosened to release the sealed state of the seal lid.
- a first object of the present invention has its object to provide an instrument capable of protecting a tip end portion of a writing or applying medium with an easy operation, and capable of easily switching a state in which the cap covers a tip end portion of the medium and a state in which the cap allows the tip end portion of the medium to be exposed.
- an instrument includes a holder for holding a medium, a cap capable of covering a tip end portion of the medium, and an operating member provided to be capable of knocking with respect to the holder to attach and detach the cap.
- the cap is connected to the operating member via a rotational transform mechanism.
- the rotational transform mechanism advances the cap in accordance with one knock of the operating member in the axial direction, then the rotational transform mechanism rotates the cap around an axis parallel to the axial direction, and then retreats the cap, and with each knock of the operating member, a state in which the cap covers the tip end portion of the medium and a state in which the cap allows the tip end portion of the medium to be exposed are switchable.
- the rotational transform mechanism advances the cap, thereafter, rotates the cap around the axis parallel to the axial direction and then, retreats the cap, and therefore the cap is removed from the tip end portion of the medium to be able to establish the state in which the tip end portion of the medium is exposed.
- the rotational transform mechanism advances the cap, thereafter rotates the cap around the axis parallel to the axial direction, then retreats the cap, and therefore making it possible to establish the state in which the cap is attached to the tip end portion of the medium to cover the tip end portion of the medium, preferably the state in which the cap covers the tip end hermetically.
- the rotational transform mechanism may include a knock cam unrotatable but movable in the axial direction with respect to a slide axial hole provided in the holder, and connected to the operating member, a cam body provided on an inner peripheral surface of the slide axial hole and having a cam surface facing to a front and inclined in an axial direction, a rotary cam connected to the cap and movable in an axial direction with respect to the slide axial hole inside the slide axial hole, and an elastic member for biasing the rotary cam rearward.
- the knock cam has a cam surface facing to the front and inclined in the axial direction, and rotation of the rotary cam is guided by the cam surfaces of the knock cam and the cam body.
- the cap can rotate 180 degrees in accordance with one knock operation of the operating member. Thereby, the cap can return to the original position with two knocks.
- the holder is provided with a hollow portion for housing at least a part of the cap in a state in which the cap allows a tip end portion of the medium to be exposed, at a tip end portion of the holder.
- a hollow portion for housing at least a part of the cap in a state in which the cap allows a tip end portion of the medium to be exposed, at a tip end portion of the holder.
- An instrument includes a holder for holding a medium, a tip end portion of which is protruded forward from the holder, a slide member provided in the holder to be movable in an axial direction, a cap connected to a tip end portion of the slide member so as to cover a tip end portion of the medium, and an operating portion connected to the slide member and movable in the axial direction so as to be operated from an outside of the holder.
- the cap By operating the operating portion by a finger to move it in the axial direction, the cap is moved in the axial direction via the slide member, and the sealed state for protecting the tip end portion of the medium and the seal released state in which the tip end portion of the medium is exposed can be switched. Sealing and seal release of the medium by the cap are mainly performed outside the holder by the operation of the operating portion, and therefore the holder can be constructed to be compact without requiring the stroke of the medium. Since a sealed space can be constructed around the tip end portion of the medium by the cap, it is also possible to keep complete sealing properties.
- a hollow portion for housing the cap may be provided in the vicinity of a tip end portion of the holder.
- the cap In the seal released state, the cap can be housed in the hollow portion provided in the holder, and therefore the cap does not hinder a user from using the medium, and the entire shape of the instrument at the time of using can be made proper one.
- An elastic member may be provided for biasing the slide member rearward with respect to the holder.
- the cap is always biased rearward, and therefore, the cap can reliably seal the tip end portion of the medium in the sealed state, or in the case of that the aforesaid hollow is provided, the cap can be reliably housed in the hollow in the seal released state.
- a controller for rotating the slide member and the cap in accordance with the movement in the axial direction of the slide member can be provided between the holder or the medium and the slide member.
- the cap can automatically rotate as well as advance by the controller when the cap advances.
- the cap rotates between the position of the same line as the tip end portion of the medium and the position on the line which is not the same as the tip end portion by the controller, the cap can be automatically moved between the sealed state and the seal released state.
- the controller can be comprised of a cam surface provided on the holder, and the engaging protruding portion which is provided on the slide member to work in cooperation with the cam surface. With this construction, the controller can be easily produced and reliably operated.
- the operating portion can include a side knock member mounted to a side portion of the holder or a rear end knock member mounted to a rear end portion of the holder.
- a curved surface portion having a curved outer peripheral surface can be provided on the tip end portion of the medium to keep sealing properties between the tip end portion and the cap. According to this construction, even if the cap is somewhat eccentric relative to the medium when the cap performs sealing, the cap keeps sealing properties to be able to be in close contact with the curved surface portion, and the cap can suitably cover the tip end portion of the medium without directly controlling the cap with fingers.
- Fig. 1 and Fig. 2 are longitudinal sectional views of a writing instrument according to an embodiment of the present invention
- Fig. 3 and Fig. 4 are overall views of the writing instrument.
- the writing instrument includes a holder 10 for holding a refill 12 as a writing medium, a cap 16 for protecting a tip end portion 12a of the refill 12, and an operating member 14 for performing an attaching and detaching operation of the cap 16.
- the refill 12 which is a writing medium, is a separate component from the holder 10 in this example, but the present invention is not limited to this, and the instrument in which the writing medium and the holder are constructed to be an integrated product and a part constructing the writing medium 12 may be practically held by another part constructing the holder 10.
- the holder 10 is constructed by an integrated product, but it may be constructed by a plurality of components.
- the refill 12 is a felt pen in this example, but the refill 12 may be writing or applying medium for stationery, cosmetics instrument and the like such as a ball point pen, a fountain pen, an eyeliner, a lip liner, and eye shadow as an instrument 1, and the medium can include the tip end portion 12a adapted to the kind of the instrument.
- the tip end portion 12a includes a ball
- the tip end portion 12a includes a felt core.
- the holder 10 includes a main axial hole 10b in which the refill 12 is housed, and the tip end portion 12a of the refill 12 is protruded forward from a front end opening 10a of the holder 10.
- the holder 10 includes a slide axial hole 10c extending in an axial direction in parallel with the main axial hole 10b in the inside of the holder 10, and an operating member 14 is placed to be movable in the axial direction inside the slide axial hole 10c.
- a tip end portion of the operating member 14 is a knock cam 14a inserted into the slide axial hole 10c, and a rear end portion of the operating member 14 is a knock operation portion 14b exposed from the holder 10. It is possible to construct the knock cam 14a and the knock operation portion 14b by separate components.
- the knock operation portion 14b is movable with respect to the holder 10, and the knock cam 14a moves in the axial direction inside the slide axial hole 10c by the knock operation.
- the knock operation portion 14b is always biased rearward by a knock spring 15, and is prevented from slipping rearward from the holder 10.
- a second front end opening 10d from which a cap 16 comes in and goes out is formed side by side the front end opening 10a from which the tip end portion 12a of the refill 12 is protruded, and a hollow portion 10e in which a cap body 16a of the cap 16 is housed is formed from the second front end opening 10d into the holder 10.
- the cap 16 has the cap body 16a at a tip end portion of the cap 16, and a rod-shaped portion 16b extending rearward from the cap body 16a to be movable in the axial direction inside the slide axial hole 10c.
- the cap body 16a is movable between a position at which the cap body 16a covers the tip end portion 12a of the refill 12 and the position at which the tip end portion 12a of the refill 12 is exposed, and when the cap body 16a is at the position where the tip end portion 12a is exposed, the cap body 16a is housed in the hollow portion 10e. It is possible to construct the cap body 16a and the rod-shaped portion 16b by separate components.
- a rear end portion of the rod-shaped portion 16b of the cap 16 is inserted into a receiving hole 17d formed at a tip end portion of a rotary cam 17 movable in the axial direction inside the slide axial hole 10c, and the cap 16 is integrally connected with the rotary cam 17.
- a return spring 18 is wound around an peripheral surface of the rod-shaped portion 16b of the cap 16, and the return spring 18 is interposed between a guide 19 fixed in the slide axial hole 10c and a tip end of the rotary cam 17 and always biases the rotary cam 17 and the cap 16 rearward.
- a tail tap 20 for closing a rear end of the main axial hole 10b is attached to a rear end portion of the holder 10. It is suitable to make the tail tap 20 appropriately detachable so that the refill 12 can be inserted from a rear end of the main axial hole 10b in order to replace the refill 12.
- the cap 16 and the operating member 14 are connected via a rotational transform mechanism or rotational cam mechanism 22 comprising the rotary cam 17, a cam body 10f formed in the slide axial hole 10c, the knock cam 14a and the return spring 18 which is the elastic member.
- a rotational transform mechanism or rotational cam mechanism 22 comprising the rotary cam 17, a cam body 10f formed in the slide axial hole 10c, the knock cam 14a and the return spring 18 which is the elastic member.
- the cam body 10f is formed on an inner peripheral surface of the slide axial hole 10c.
- mountains 10f1 and 10f1 are formed at every 180 degrees in the cambody 10f and longitudinal grooves 10f2 and 10f2 which correspond to valleys existing between two mountains 10f1 and 10f1, as shown in a development view in Fig. 5B.
- Front ends of the mountains 10f1 and 10f1 become cam surfaces 10f3 and 10f3 which face forward and are inclined with respect to an axial direction.
- protrusions 14a1 and 14a1 are formed at every 180 degrees on an outer peripheral surface of the front end portion of the knock cam 14a, and two kinds of cam surfaces 14a2 and 14a3 inclined with respect to the axial direction are formed at every 180 degrees on a front end surface.
- the cam surface 14a2 is a gentle slope surface and the cam surface 14a3 is a steep slope surface, and both of them face to a front and are inclined in the opposite direction from each other.
- the protrusions 14a1 and 14a1 are slidably fitted into the longitudinal grooves 10f2 and 10f2 of the cam body 10f, whereby the knock cam 14a is unrotatable with respect to the slide axial hole 10c and movable in the axial direction.
- the rotary cam 17 has a flange portion 17a at a front end which is extended in diameter as shown in Fig. 8, and two longitudinal ribs 17b and 17b formed at an interval of 180 degrees on an outer peripheral surface behind the flange portion 17a.
- the longitudinal ribs 17b and 17b are slidably fitted into the longitudinal grooves 10f2 and 10f2 of the cam body 10f .
- Rear end surfaces of the longitudinal ribs 17b and 17b become cam surfaces 17c and 17c.
- the rotary cam 17 is movable in the axial direction with respect to the slide axial hole 10c, and is relatively rotatable with respect to the slide axial hole 10c when the longitudinal ribs 17b and 17b get out of the longitudinal grooves 10f2 and 10f2 of the cam body 10f and are located at a front position from the cam body 10f.
- the cap body 16a of the cap 16 covers the tip end portion 12a of the refill 12 to protect the same.
- the knock cam 14a advances in the slide axial hole 10c and its front end abuts to the rear end portion of the rotary cam 17 to advance the rotary cam 17 (Fig. 9A).
- the cap 16 With the movement of advance, rotation of 180 degrees, and retreat of the rotary cam 17 as above, the cap 16 also advances, the cap body 16a advances further from the tip end portion 12a of the refill 12, rotates 180 degrees with the rod-shaped portion 16b as the center of rotation, retreats and passes through the front end opening 10d to be housed in the hollow portion 10e. Thereby, the tip end portion 12a of the refill 12 is exposed, and can perform writing.
- the retreat position of the cap 16 when the cap 16 allows the tip end portion 12a of the refill 12 to be exposed is determined whether the rear end of the cap body 16a abuts on the front end opening 10d of the holder 10, or whether the flange portion 17a of the rotary cam 17 abuts to the mountains 10f1 and 10f1 of the cam body 10. Since a part of the cap 16 is housed in the hollow portion 10e, the cap 16 does not become an obstacle in writing, and favorable appearance can be maintained.
- the retreat position of the cap 16 when the cap 16 covers the tip end portion 12a of the refill 12 is determined by the cap body 16a abutting on the front end opening 10a of the holder 10.
- the cap 16 can be switched to the state in which the cap 16 covers the tip end portion 12a of the refill 12 and the state in which the cap 16 allows the tip end portion 12a to be exposed by the rotational transform mechanism 22 every time the knock operation portion 14 is knocked. On switching, the cap 16 rotates every 180 degrees, and the switching operation can be reliably performed.
- Fig. 10 is a longitudinal sectional view showing an instrument according to a second embodiment of the present invention.
- a writing medium 112 is housed in a holder 110.
- the writing medium 112 is fixedly held with respect to the holder 110.
- an advancing mechanism for advancing the writing medium 112 does not exist.
- the writing medium 112 and the holder 110 are separate components, but the writing medium 112 and the holder 110 are not limited to this, and they may be constructed by an integrated component, in which a part constructing the writing medium 112 is practically held by another part constructing the holder 110.
- the holder 110 is constructed by an integrated component, but the holder 110 is not limited to this, and it may be constructed by a plurality of components.
- the medium 112 As the medium 112, the medium which is the same as the writing medium 12 or applying medium can be used.
- the tip end portion 112a of the writing medium 112 is always protruded forward from a front end opening 110a of the holder 110.
- a rear end portion of the writing medium 112 is a housing portion 112b for housing a writing medium such as writing ink, a part between the housing portion 112b and the tip end portion 112a is a joint part 112c.
- the tip end portion 112a and the joint portion 112c have reduced diameter smaller than that of the housing portion 112b.
- a curved surface portion 112d having a partially spherical-shaped outer peripheral surface is formed at the tip end portion 112a.
- a slide member 114 is placed inside the holder 110 in parallel with the writing medium 112 to be able to advance and retreat, namely, movable in an axial direction.
- the slide member 114 is mainly constituted of a rod-shaped portion 114a as shown in Fig. 12 so as not to occupy a large area in the cross section of the holder 110, and a cap 115 is integrally provided at a front end portion of the rod-shaped portion 114a.
- the cap 115 has a cap shape suitable for covering the tip end portion 112a of the writing medium 112.
- Guide portions 117 and 117 are formed between the holder 110 and the writing medium 112 to bear the rod-shaped portion 114a of the slide member 114 movably in the axial direction of the holder 110 and rotatably on its axis.
- the operating member 116 is provided integrally with the slide member 114.
- the operating member 116 is a side knock member mounted to a side portion of the holder 110 in this example, and is exposed outside from a long hole 110c formed on a side peripheral surface of the holder 110, capable of being operated from an outside of the holder 110, and movable in the axial direction in the long hole 110c.
- the cross section of the operating member 116 is preferably a circular shape, and a side peripheral surface of the housing portion 112b of the writing medium 112 adjacent to the operating member 116 is preferably in an arc shape so as not to interfere with the operating member 116. This makes the operating member 116 rotatable (rotatable on its axis) accompanied with the slide member 114.
- a hollow 118 is formed between the holder 110 and the joint portion 112c of the writing medium 112, and the cap 115 is capable of being housed in this hollow 118.
- This hollow 118 communicates with a front end opening 110b of the holder 110, and the cap 115 and a front end portion of the slide member 114 are capable of advancing and retreating through the front end opening 110b.
- Fig. 10 shows a state in which the tip end portion 112a of the writing medium 112 is covered and protected with the cap 115.
- the operating member 116 is operated to move with fingers. Thereby, the slide member 114 and the cap 115 advance, and the cap 115 is separated from the tip end portion 112a of the writing medium 112.
- the cap 115 rotates with the rod-shaped portion 114a as the center of rotation, and moves from the position on the same line as the tip end portion 112a of the writing medium 112 to the position which is not on the same line.
- the cap 115 passes through the front end opening 110b and is housed in the hollow 118. The tip end portion 112a of the writing medium 112 is completely released and can be used.
- the slide member 114 can be always biased rearward by an elastic member.
- the cap 115 can be housed into the hollow 118 by a biasing force of the elastic member.
- the cap 115 may be lightly locked inside the hollow 118 instead of the elastic member.
- the tip end portion 112a of the writing medium 112 can be covered with the cap 115 by the reverse steps from the above.
- the cap 115 is retreating and surrounding the tip end portion 112a of the writing medium 112
- a conical inner peripheral surface of the cap 115 contacts the curved surface portion 112d having the curved outer peripheral surface, whereby the position of the cap 115 is automatically adjusted, or even if the cap 115 keeps slightly eccentric, the cap 115 can surely seal the tip end portion 112a in the airtight state.
- the sealed state in which the tip end portion 112a of the writing medium 112 is protected, and the sealing released state in which the tip end portion 112a of the writing medium 112 is released can be switched by only operating the operating member 116.
- the cap 115 is moved by that the operating member 116 is moved not only in the axial direction but also is rotated by an user.
- a controller can be provided between the slide member 114 and the holder 110 (or the writing medium 112) to move the cap 115 along the specified route.
- Fig. 14 is a development view of an inner peripheral surface of the holder 110 expressing a cam surface constructing the controller.
- a cam surface 120 is formed on an inner peripheral surface of the holder 110, and an engaging protruding portion 114b provided on the slide member 114 abuts on this cam surface 120 and moves along a cam passage formed by the cam surface 120.
- the controller is constructed by the cam surface 120 and the engaging protruding portion 114b.
- the cam passage has a first linear passage 120a and a second linear passage 120b for guiding the slide member 114 in the axial direction, and a first campassage 120c and a second campassage 120d which exist between the first linear passage 120a and the second linear passage 120b and guides the slide member 114 in the rotational direction.
- the engaging protruding portion 114b of the slide member 114 is at a terminal position of the second linear passage 120b.
- the operating member 116 is operated to advance from this state, the engaging protruding portion 114b starts from the second linear passage 120b and moves along the second cam passage 120d.
- the slide member 114 and the cap 115 rotate while advancing.
- the engaging protruding portion 114b is moved to the first linear passage 120a from the second cam passage 120d and reaches the terminal position of the first linear passage 120a.
- the cap 115 is separated from the tip end portion 112a of the writing medium 112 following the movement of the slide member 114, and thereafter, rotates, and moves into the hollow 118 . In this way, the tip endportion 112a of the writing medium 112 is released from the cap 115 and used for writing.
- the engaging protruding portion 114b of the slide member 114 starts from the terminal position of the first linear passage 120a and moves along the first cam passage 120c. At this time, the slide member 114 and the cap 115 rotates while advancing.
- the engaging protruding portion 114b passes the peak of the first cam passage 120c
- the engaging protruding portion 114b is moved to the second linear passage 120b from the first cam passage 120c and reaches the terminal position of the second linear passage 120b.
- the cap 115 rotates after separating from the hollow 118, and can cover the tip end portion 112a of the writing medium 112.
- the slide member 114 and the cap 115 can be automatically rotated in accordance with the movement in the axial direction of the slide member 114 by the controller constituted of the cam surface 120 and the engaging protruding portion 114b.
- Fig. 15 is a view showing a cam surface 120' and an engaging protruding portion 114'b which constructs another example of the controller.
- the engaging protruding portion 114'b is pivotally attached to the slide member 114 via a hinge.
- a cam passage formed by the cam surface 120' has a first linear passage 120'a and a second linear passage 120'b which guide the slide member 114 in the axial direction and a cam passage 120' c which exists between the first linear passage 120' a and the second linear passage 120'b and guides the slide member 114 in the rotational direction.
- the cam passage 120'c has two peaks 120'd and 120'e.
- the engaging protruding portion 114' b of the slide member 114 is at the terminal position of the second linear passage 120' b.
- the engaging protruding portion 114' b starts from the second linear passage 120' b and moves to the peak 120' e.
- the engaging protruding portion 114' b moves toward the first linear passage 120'a to reach the terminal position of the first linear passage 120'a.
- the cap 115 separates from the tip end portion 112a of the writing medium 112, thereafter rotates and moves into the hollow 118. In this way, the tip end portion 112a of the writing medium 112 is released from the cap 115 and is used for writing.
- the engaging protruding portion 114'b of the slide member 114 starts from the terminal position of the first linear passage 120' a and moves to the peak 120' d.
- the engaging protruding portion 114'b moves toward the second linear passage 120'b and reaches the terminal position of the second linear passage 120'b.
- the cap 115 separates from the hollow 118, thereafter rotates, and can cover the tip end portion 112a of the writing medium 112.
- the slide member 114 and the cap 115 can be automatically rotated in accordance with the movement of the slide member 114 in the axial direction by the controller constituted of the cam surface 120' and the engaging protruding portion 114'b.
- Fig. 18 and Fig. 19 are views showing still another example of the controller.
- An internal cylinder portion 110d is formed inside the holder 110, and the slide member 114 penetrates through the inside of the internal cylinder portion 110d.
- a cam surface 121 is formed around in a circumferential direction on an inner peripheral surface of the internal cylinder portion 110d, the engaging protruding portion 114b provided on the slide member 114 moves along the cam passage formed by the cam surface 121.
- the controller is constructed by the cam surface 121 and the engaging protruding portion 114b.
- the cam passage has a first linear passage 121a and a second linear passage 121b which guide the slide member 114 in the axial direction and a first cam passage 121c and a second cam passage 121d which exist between the first linear passage 121a and the second linear passage 121b and guide the slide member 114 in the rotating direction.
- the engaging protruding portion 114b of the slide member 114 is at the terminal position of the second linear passage 121b.
- the engaging protruding portion 114b starts from the second linear passage 121b, and advances, and thereafter the engaging protruding portion 114b moves along the second cam passage 121d.
- the engaging protruding portion 114b moves along the second cam passage 121d, and reaches the terminal position of the first linear passage 121a.
- the cap 115 linearly advances and separates from the tip end portion 112a of the writing medium 112, and thereafter rotates and moves into the hollow 118. In this way, the tip end portion 112a of the writing medium 112 is released from the cap 115 and is used for writing.
- the engaging protruding portion 114b of the slide member 114 starts from the terminal position of the first linear passage 121a and advances, and thereafter moves along the first cam passage 121c.
- the engaging protruding portion 114b moves along the first cam passage 121c, and the engaging protruding portion 114b moves to the second linear passage 121b from the first cam passage 121c and reaches the terminal position of the second linear passage 121b.
- the cap 115 linearly advances and separates from the hollow 18, thereafter rotates, further linearly retreats, and can cover the tip end portion 112a of the writing medium 112.
- a flat packing or the like may be attached inside the cap 115 to enhance sealing properties when covering the tip end portion 112a of the writing medium 112.
- the slide member 114 and the cap 115 can be automatically rotated in accordance with the movement of the slide member 114 in the axial direction by the controller constituted of the cam surface 121 and the engaging protruding portion 114b.
- Fig. 16 shows still another embodiment.
- a front end portion is not shown since it is the same as in Fig. 10.
- an operating member 116' is integrally mounted to a rear end of the slide member 114.
- a slide cap 122 is fitted onto a rear end of the holder 110, and an elastic member 124 for biasing the slide cap 122 and the holder 110 in the direction to separate from each other is interposed between the slide cap 122 and the holder 110.
- the operating member 116' penetrates through a through-hole 122b formed in a rear end surface 122a of the slide cap 122 and engaged with the rear end surface 122a.
- the operating member 116' and the slide member 114 are always biased rearward with respect to the holder 110 by the elastic member 124. After the operating member 116' is pressed forward together with the slide cap 122 and the operating member 116' is swung around the through-hole 122b, the force is released, whereby the cap 115 can be moved from the sealed state of the tip end portion 112a of the writing medium 112 to the seal released state, or from the seal released state of the tip end portion 112a of the writing medium 112 to the sealed state as in the previous embodiment. In both the sealed state and seal released state, the cap 115 is biased rearward, and therefore the tip end portion 112a of the writing medium 112 can be reliably sealed in an airtight state, or can reliably housed in the hollow 118.
- Fig. 20 to Fig. 22 show the drawings showing still another embodiment.
- the slide cap 122 in the embodiment shown in Fig. 16 becomes an operating member 116"
- he operating member 116" becomes a rear end knock member mounted to a rear end portion of the holder 110.
- the operating member 116" is rotatably connected to the rear end of the slide member 114.
- An elastic member 124 for biasing the operating member 116" and the holder 110 in the direction to separate both of them from each other is interposed between the operating member 116" and the holder 110.
- the operating member 116" and the slide member 114 are always biased rearward with respect to the holder 110 by the elastic member 124.
- An engaging protruding portion 114b is formed at the slide member 114, while the cam surface 120 is formed on an outer peripheral surface of a rear portion of the housing portion 112b of the writing medium 112, and the controller is constructed by the cam surface 120 and the engaging protruding portion 114b.
- This controller can have the same construction as shown in Fig. 14. If the length of the writing medium 112 is short, it is suitable to extend the first linear passage 120a to the rear end of the writing medium 112 and open it at a rearmost end, so that when the slide member 114 retreats, the engaging protruding portion 114b gets out of the first linear passage 120a from the rearmost end of the first linear passage 120a, and can move rearward from the writing medium 112.
- the controller can be one same as the controller shown in Fig. 15 or Fig. 19.
- the front end of the slide member 114 protrudes to an outside of the holder 110, and the cap 115 provided at a front end portion of the slide member 114 is not housed in the holder 110 in the seal released state of the tip end portion 112a of the writing medium 112, and is disposed beside a reduced diameter portion 110e of the tip end portion of the holder 110.
- the cap 115 When the force is released after the operating member 116" is pressed forward, the cap 115 can be moved to the seal released state from the sealed state of the tip end portion 112a of the writing medium 112, or to the sealed state from the seal released state of the tip end portion 112a of the writing medium 112 as in the previous embodiment.
- the engaging protruding portion 114b of the slide member 114 moves along the cam passage formed by the cam surface 120 by the controller, and the slide member 114 and the cap 115 advance and rotate, and thereafter retreat.
- the cap 115 rotates, and thereby moves from the eccentric state beside the writing medium 112 to the concentric position and can cover the tip end portion 112a of the writing medium 112 (Fig. 21).
- the engaging protruding portion 114b of the slide member 114 moves along the cam passage formed by the cam surface 120, and the slide member 114 and the cap 115 advance and rotate, and thereafter retreat. After the cap 115 rotates and thereby gets out of the tip end portion 112a of the writing medium 112, the cap 115 becomes eccentric and returns to the state where the cap 115 is beside the writing medium 112.
- the slide member 114 is rotated by the operation of hand and fingers to the operating member 116, or by the controller 114b, 114'b, 120, 120' and 121, but the present invention is not limited to this, and when the slide member 114 is constructed by a flexible material, the slide member 114 itself bends and deforms instead of the slide member 114 rotating, and thereby the cap 115 can be rotated between the concentric position with the tip end portion 112a of the writing medium 112 and the eccentric position to the tip end portion 112a of the writing medium 112.
- the cap 115 and the operating member 116 are formed integrally with the slide member 114, but the present invention is not limited to this, and it is possible to couple the cap 115 or the operating member 116 as a separate component to the slide member 114 by optional coupling means.
- Connection of the cap 115 or the operating member 116 and the slide member 114 is not limited to integral connection, but may be the connection in the range in which the operating member 116 or the cap 115 can move following the movement of the slide member 114 in the axial direction.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
- Pens And Brushes (AREA)
Abstract
Description
- The present invention relates to an instrument capable of protecting a tip end portion of a writing or applying medium held in a holder by covering the tip end portion with a cap when not in use.
- Conventionally, in a writing instrument, for example, it is necessary to cover a tip end portion of a writing medium when it is not used in order to protect the tip end portion of the writing medium, to prevent a writing medium from being dried, or not to contaminate surroundings, and to this end, a cap is generally fitted onto a tip end portion of the holder to be attachable and detachable.
- However, with the conventional cap, both hands have to be used to remove the cap, its attaching and detaching operation is troublesome, and it is feared that the removed cap is lost.
- Therefore, Japanese Patent No. 2714780 proposes a capless writing instrument which can project and retreat a tip end writing portion with a knocking operation without a cap and includes a mechanism for preventing leakage, drying and backflow of ink. In this patent publication, a guide through which a front part of the writing medium can penetrate is provided inside a body of the writing instrument so as to be movable in a longitudinal direction and to restrain the forward movement of a specified amount or more, a seal lid of which inner surface is constituted by an elastic body is provided at a tip end of this guide so as to be openable and closable, and a string-shaped member is connected to the seal lid, so that the string-shaped member pulls the seal lid to closely attach the tip end of the writing medium to the elastic body of the seal lid when the writing medium is housed, and when the writing medium moves forward, pulling of the thread-shaped member is loosened to release the sealed state of the seal lid.
- However, in the writing instrument described in the above-described patent, the stroke length advancing the writing medium to project it from the tip end of the body becomes long because it is necessary to provide a space for the seal lid to open and close inside the body.
- In view of the foregoing and other drawbacks, disadvantages and problems of the conventional methods and structures, a first object of the present invention has its object to provide an instrument capable of protecting a tip end portion of a writing or applying medium with an easy operation, and capable of easily switching a state in which the cap covers a tip end portion of the medium and a state in which the cap allows the tip end portion of the medium to be exposed.
- In order to attain the above-described object, an instrument according to the present invention includes a holder for holding a medium, a cap capable of covering a tip end portion of the medium, and an operating member provided to be capable of knocking with respect to the holder to attach and detach the cap. The cap is connected to the operating member via a rotational transform mechanism. The rotational transform mechanism advances the cap in accordance with one knock of the operating member in the axial direction, then the rotational transform mechanism rotates the cap around an axis parallel to the axial direction, and then retreats the cap, and with each knock of the operating member, a state in which the cap covers the tip end portion of the medium and a state in which the cap allows the tip end portion of the medium to be exposed are switchable.
- When the operating member is knocked in the state in which the cap covers the tip end portion of the medium, the rotational transform mechanism advances the cap, thereafter, rotates the cap around the axis parallel to the axial direction and then, retreats the cap, and therefore the cap is removed from the tip end portion of the medium to be able to establish the state in which the tip end portion of the medium is exposed. On the other hand, when the operating member is knocked in the state in which the cap allows the tip end portion of the medium to be exposed, the rotational transform mechanism advances the cap, thereafter rotates the cap around the axis parallel to the axial direction, then retreats the cap, and therefore making it possible to establish the state in which the cap is attached to the tip end portion of the medium to cover the tip end portion of the medium, preferably the state in which the cap covers the tip end hermetically. By providing the rotational transform mechanism between the operating member and the cap in this manner, movement in the axial direction and rotation of the cap can be reliably performed, and switching is made possible.
- The rotational transform mechanism may include a knock cam unrotatable but movable in the axial direction with respect to a slide axial hole provided in the holder, and connected to the operating member, a cam body provided on an inner peripheral surface of the slide axial hole and having a cam surface facing to a front and inclined in an axial direction, a rotary cam connected to the cap and movable in an axial direction with respect to the slide axial hole inside the slide axial hole, and an elastic member for biasing the rotary cam rearward. The knock cam has a cam surface facing to the front and inclined in the axial direction, and rotation of the rotary cam is guided by the cam surfaces of the knock cam and the cam body.
- Preferably, the cap can rotate 180 degrees in accordance with one knock operation of the operating member. Thereby, the cap can return to the original position with two knocks.
- Preferably, the holder is provided with a hollow portion for housing at least a part of the cap in a state in which the cap allows a tip end portion of the medium to be exposed, at a tip end portion of the holder. With this construction, when the cap is not used in the state in which the tip end portion of the medium is exposed, at least a part of the cap can be housed in the hollow portion to make the outer appearance favorable.
- An instrument according to another aspect of the present invention includes a holder for holding a medium, a tip end portion of which is protruded forward from the holder, a slide member provided in the holder to be movable in an axial direction, a cap connected to a tip end portion of the slide member so as to cover a tip end portion of the medium, and an operating portion connected to the slide member and movable in the axial direction so as to be operated from an outside of the holder.
- By operating the operating portion by a finger to move it in the axial direction, the cap is moved in the axial direction via the slide member, and the sealed state for protecting the tip end portion of the medium and the seal released state in which the tip end portion of the medium is exposed can be switched. Sealing and seal release of the medium by the cap are mainly performed outside the holder by the operation of the operating portion, and therefore the holder can be constructed to be compact without requiring the stroke of the medium. Since a sealed space can be constructed around the tip end portion of the medium by the cap, it is also possible to keep complete sealing properties.
- A hollow portion for housing the cap may be provided in the vicinity of a tip end portion of the holder. In the seal released state, the cap can be housed in the hollow portion provided in the holder, and therefore the cap does not hinder a user from using the medium, and the entire shape of the instrument at the time of using can be made proper one.
- An elastic member may be provided for biasing the slide member rearward with respect to the holder. According to this construction, the cap is always biased rearward, and therefore, the cap can reliably seal the tip end portion of the medium in the sealed state, or in the case of that the aforesaid hollow is provided, the cap can be reliably housed in the hollow in the seal released state.
- A controller for rotating the slide member and the cap in accordance with the movement in the axial direction of the slide member can be provided between the holder or the medium and the slide member. According to this construction, by only operating the operating portion to advance with fingers, the cap can automatically rotate as well as advance by the controller when the cap advances. As a result that the cap rotates between the position of the same line as the tip end portion of the medium and the position on the line which is not the same as the tip end portion by the controller, the cap can be automatically moved between the sealed state and the seal released state.
- The controller can be comprised of a cam surface provided on the holder, and the engaging protruding portion which is provided on the slide member to work in cooperation with the cam surface. With this construction, the controller can be easily produced and reliably operated.
- The operating portion can include a side knock member mounted to a side portion of the holder or a rear end knock member mounted to a rear end portion of the holder.
- A curved surface portion having a curved outer peripheral surface can be provided on the tip end portion of the medium to keep sealing properties between the tip end portion and the cap. According to this construction, even if the cap is somewhat eccentric relative to the medium when the cap performs sealing, the cap keeps sealing properties to be able to be in close contact with the curved surface portion, and the cap can suitably cover the tip end portion of the medium without directly controlling the cap with fingers.
- The present disclosure relates to subject matter contained in Japanese Patent Applications Nos. 2004-198579, filed on July 5, 2004, 2003-3309, filed on January 9, 2003 and, 2003-99049, filed on April 2, 2003 which are expressly incorporated herein by reference in its entirety.
- The foregoing and other purposes, aspects and advantages will be better understood from the following detailed description of preferred embodiments of the invention with reference to the drawings, in which:
- Fig. 1 is an overall longitudinal sectional view of an instrument according to an embodiment of the present invention, and shows a state in which a cap covers a tip end portion of a medium;
- Fig. 2 is an overall longitudinal sectional view of the instrument in Fig. 1, and shows a state in which the cap allows the tip end portion of the medium to be exposed;
- Fig. 3 is an overall view of the instrument in Fig. 1, and shows the state in which the cap covers the tip end portion of the medium;
- Fig. 4 is an overall view of the instrument in Fig. 1, and shows the state in which the cap allows the tip end portion of the medium to be exposed;
- Fig. 5A is a longitudinal sectional view of a holder of the instrument in Fig. 1, and Fig. 5B is a development of a cam body;
- Fig. 6A is a plan view of an operating member of the instrument in Fig. 1, Fig. 6B is a side view, and Fig. 6C is a partial sectional view seen along the
line 6C-6C in Fig. 6A; - Fig. 7 is a development of the tip end portion of the knock cam of the operating member;
- Fig. 8A is a side view of a rotary cam of the instrument in Fig. 1, Fig. 8B is a plan view, Fig. 8C is a sectional view seen along the
line 8C-8C in Fig. 8A, and Fig. 8D is a view seen in the arrow D in Fig. 8B; - Figs. 9A to 9C are views showing an operation of a rotational transfer mechanism;
- Fig. 10 is a longitudinal sectional view showing an instrument according to a second embodiment of the present invention, and shows a state in which the tip end of the medium is sealed with a cap;
- Fig. 11 is a view seen along the line 11-11 in Fig. 10;
- Fig. 12 is a sectional view seen along the line 12-12 in Fig. 10;
- Fig. 13 is a longitudinal sectional view showing a state in which the cap of the instrument in Fig. 10 does not seal the tip end of the medium;
- Fig. 14 is a development of an inner peripheral surface of a holder on which a cam surface constructing a controller is formed;
- Fig. 15 is a development of an inner peripheral surface of a holder on which a cam surface constructing another example of a controller is formed;
- Fig. 16 is a longitudinal sectional view of a rear portion showing an instrument according to a third embodiment of the present invention;
- Fig. 17 is a view seen along the line 17-17 in Fig. 16;
- Fig. 18 is a longitudinal sectional view showing an instrument of another example of a controller;
- Fig. 19 is a development of an internal cylinder portion of a holder in which a cam surface constructing the controller is formed;
- Fig. 20 is a longitudinal sectional view showing an instrument according to a fourth embodiment and shows a state in which the cap dose not seal the tip end of the medium;
- Fig. 21 is a longitudinal sectional view showing an instrument according to a fourth embodiment of the present invention, and shows a state in which the cap seals the tip end of the medium; and
- Fig. 22 is a sectional view seen along the line 22-22 in Fig. 20.
- Fig. 1 and Fig. 2 are longitudinal sectional views of a writing instrument according to an embodiment of the present invention, and Fig. 3 and Fig. 4 are overall views of the writing instrument. In the drawings, the writing instrument includes a
holder 10 for holding arefill 12 as a writing medium, acap 16 for protecting atip end portion 12a of therefill 12, and an operatingmember 14 for performing an attaching and detaching operation of thecap 16. - The
refill 12, which is a writing medium, is a separate component from theholder 10 in this example, but the present invention is not limited to this, and the instrument in which the writing medium and the holder are constructed to be an integrated product and a part constructing the writingmedium 12 may be practically held by another part constructing theholder 10. In the example shown in the drawings, theholder 10 is constructed by an integrated product, but it may be constructed by a plurality of components. - The
refill 12 is a felt pen in this example, but therefill 12 may be writing or applying medium for stationery, cosmetics instrument and the like such as a ball point pen, a fountain pen, an eyeliner, a lip liner, and eye shadow as aninstrument 1, and the medium can include thetip end portion 12a adapted to the kind of the instrument. For example, when the instrument is a ball point pen, thetip end portion 12a includes a ball, and when the instrument is a felt pen, thetip end portion 12a includes a felt core. - The
holder 10 includes a mainaxial hole 10b in which therefill 12 is housed, and thetip end portion 12a of therefill 12 is protruded forward from a front end opening 10a of theholder 10. - The
holder 10 includes a slideaxial hole 10c extending in an axial direction in parallel with the mainaxial hole 10b in the inside of theholder 10, and an operatingmember 14 is placed to be movable in the axial direction inside the slideaxial hole 10c. - A tip end portion of the operating
member 14 is aknock cam 14a inserted into the slideaxial hole 10c, and a rear end portion of the operatingmember 14 is aknock operation portion 14b exposed from theholder 10. It is possible to construct theknock cam 14a and theknock operation portion 14b by separate components. Theknock operation portion 14b is movable with respect to theholder 10, and theknock cam 14a moves in the axial direction inside the slideaxial hole 10c by the knock operation. Theknock operation portion 14b is always biased rearward by aknock spring 15, and is prevented from slipping rearward from theholder 10. - At a tip end portion of the
holder 10, a second front end opening 10d from which acap 16 comes in and goes out is formed side by side the front end opening 10a from which thetip end portion 12a of therefill 12 is protruded, and ahollow portion 10e in which acap body 16a of thecap 16 is housed is formed from the second front end opening 10d into theholder 10. - The
cap 16 has thecap body 16a at a tip end portion of thecap 16, and a rod-shapedportion 16b extending rearward from thecap body 16a to be movable in the axial direction inside the slideaxial hole 10c. Thecap body 16a is movable between a position at which thecap body 16a covers thetip end portion 12a of therefill 12 and the position at which thetip end portion 12a of therefill 12 is exposed, and when thecap body 16a is at the position where thetip end portion 12a is exposed, thecap body 16a is housed in thehollow portion 10e. It is possible to construct thecap body 16a and the rod-shapedportion 16b by separate components. - A rear end portion of the rod-shaped
portion 16b of thecap 16 is inserted into a receivinghole 17d formed at a tip end portion of arotary cam 17 movable in the axial direction inside the slideaxial hole 10c, and thecap 16 is integrally connected with therotary cam 17. Areturn spring 18 is wound around an peripheral surface of the rod-shapedportion 16b of thecap 16, and thereturn spring 18 is interposed between aguide 19 fixed in the slideaxial hole 10c and a tip end of therotary cam 17 and always biases therotary cam 17 and thecap 16 rearward. - A
tail tap 20 for closing a rear end of the mainaxial hole 10b is attached to a rear end portion of theholder 10. It is suitable to make thetail tap 20 appropriately detachable so that therefill 12 can be inserted from a rear end of the mainaxial hole 10b in order to replace therefill 12. - The
cap 16 and the operatingmember 14 are connected via a rotational transform mechanism orrotational cam mechanism 22 comprising therotary cam 17, acam body 10f formed in the slideaxial hole 10c, theknock cam 14a and thereturn spring 18 which is the elastic member. Hereinafter, the construction of therotational transform mechanism 22 will be explained. - The
cam body 10f is formed on an inner peripheral surface of the slideaxial hole 10c. Mountains 10f1 and 10f1 are formed at every 180 degrees in thecambody 10f and longitudinal grooves 10f2 and 10f2 which correspond to valleys existing between two mountains 10f1 and 10f1, as shown in a development view in Fig. 5B. Front ends of the mountains 10f1 and 10f1 become cam surfaces 10f3 and 10f3 which face forward and are inclined with respect to an axial direction. - As shown in a development view in Fig. 7, protrusions 14a1 and 14a1 are formed at every 180 degrees on an outer peripheral surface of the front end portion of the
knock cam 14a, and two kinds of cam surfaces 14a2 and 14a3 inclined with respect to the axial direction are formed at every 180 degrees on a front end surface. The cam surface 14a2 is a gentle slope surface and the cam surface 14a3 is a steep slope surface, and both of them face to a front and are inclined in the opposite direction from each other. The protrusions 14a1 and 14a1 are slidably fitted into the longitudinal grooves 10f2 and 10f2 of thecam body 10f, whereby theknock cam 14a is unrotatable with respect to the slideaxial hole 10c and movable in the axial direction. - The
rotary cam 17 has aflange portion 17a at a front end which is extended in diameter as shown in Fig. 8, and twolongitudinal ribs flange portion 17a. Thelongitudinal ribs cam body 10f . Rear end surfaces of thelongitudinal ribs rotary cam 17 is movable in the axial direction with respect to the slideaxial hole 10c, and is relatively rotatable with respect to the slideaxial hole 10c when thelongitudinal ribs cam body 10f and are located at a front position from thecam body 10f. - An operation of the instrument constructed as above will be explained.
- When the instrument is not used for writing, the
cap body 16a of thecap 16 covers thetip end portion 12a of therefill 12 to protect the same. When theknock operation portion 14b is knocked to perform writing from this state, theknock cam 14a advances in the slideaxial hole 10c and its front end abuts to the rear end portion of therotary cam 17 to advance the rotary cam 17 (Fig. 9A). - When the
longitudinal ribs rotary cam 17 get out of the longitudinal grooves 10f2, 10f2 of thecam body 10, the cam surfaces 17c, 17c of therotary cam 17 slide along the cam surfaces 14a2, 14a2 of theknock cam 14a with retreat by the biasing force of thereturn spring 18, and therotary cam 17 is rotated (Fig. 9B) . Further, when the knocking force of theknock operation portion 14b is released, the cam surfaces 17c, 17c slide along the cam grooves 10f2, 10f2 of thecam body 10f (Fig. 9C), and after therotary cam 17 is rotated 180 degrees, thelongitudinal ribs cam body 10, and retreat. - With the movement of advance, rotation of 180 degrees, and retreat of the
rotary cam 17 as above, thecap 16 also advances, thecap body 16a advances further from thetip end portion 12a of therefill 12, rotates 180 degrees with the rod-shapedportion 16b as the center of rotation, retreats and passes through the front end opening 10d to be housed in thehollow portion 10e. Thereby, thetip end portion 12a of therefill 12 is exposed, and can perform writing. - The retreat position of the
cap 16 when thecap 16 allows thetip end portion 12a of therefill 12 to be exposed is determined whether the rear end of thecap body 16a abuts on the front end opening 10d of theholder 10, or whether theflange portion 17a of therotary cam 17 abuts to the mountains 10f1 and 10f1 of thecam body 10. Since a part of thecap 16 is housed in thehollow portion 10e, thecap 16 does not become an obstacle in writing, and favorable appearance can be maintained. - When writing is finished, and the
knock operating portion 14b is knocked again, the movement of advance, rotation of 180 degrees and retreat of therotary cam 17 is performed in cooperation of theknock cam 14a, thecam body 10f and therotary cam 17 as in the above, and thecap 16 passes through the secondfront end opening 10d, advances from thehollow portion 10e, rotates 180 degrees with the rod-shapedportion 16b as the center of rotation, retreats and covers thetip end portion 12a of therefill 12. - The retreat position of the
cap 16 when thecap 16 covers thetip end portion 12a of therefill 12 is determined by thecap body 16a abutting on the front end opening 10a of theholder 10. - As described above, according to this embodiment, the
cap 16 can be switched to the state in which thecap 16 covers thetip end portion 12a of therefill 12 and the state in which thecap 16 allows thetip end portion 12a to be exposed by therotational transform mechanism 22 every time theknock operation portion 14 is knocked. On switching, thecap 16 rotates every 180 degrees, and the switching operation can be reliably performed. - Fig. 10 is a longitudinal sectional view showing an instrument according to a second embodiment of the present invention. In the drawing, a writing
medium 112 is housed in aholder 110. The writingmedium 112 is fixedly held with respect to theholder 110. In the case of this example, an advancing mechanism for advancing the writingmedium 112 does not exist. In the case of this example, the writingmedium 112 and theholder 110 are separate components, but the writingmedium 112 and theholder 110 are not limited to this, and they may be constructed by an integrated component, in which a part constructing the writingmedium 112 is practically held by another part constructing theholder 110. In the example of this drawing, theholder 110 is constructed by an integrated component, but theholder 110 is not limited to this, and it may be constructed by a plurality of components. - As the medium 112, the medium which is the same as the writing
medium 12 or applying medium can be used. Thetip end portion 112a of the writingmedium 112 is always protruded forward from afront end opening 110a of theholder 110. A rear end portion of the writingmedium 112 is ahousing portion 112b for housing a writing medium such as writing ink, a part between thehousing portion 112b and thetip end portion 112a is ajoint part 112c. Thetip end portion 112a and thejoint portion 112c have reduced diameter smaller than that of thehousing portion 112b. Acurved surface portion 112d having a partially spherical-shaped outer peripheral surface is formed at thetip end portion 112a. - A
slide member 114 is placed inside theholder 110 in parallel with the writing medium 112 to be able to advance and retreat, namely, movable in an axial direction. Theslide member 114 is mainly constituted of a rod-shapedportion 114a as shown in Fig. 12 so as not to occupy a large area in the cross section of theholder 110, and acap 115 is integrally provided at a front end portion of the rod-shapedportion 114a. Thecap 115 has a cap shape suitable for covering thetip end portion 112a of the writingmedium 112. -
Guide portions holder 110 and the writing medium 112 to bear the rod-shapedportion 114a of theslide member 114 movably in the axial direction of theholder 110 and rotatably on its axis. - An operating
member 116 is provided integrally with theslide member 114. The operatingmember 116 is a side knock member mounted to a side portion of theholder 110 in this example, and is exposed outside from along hole 110c formed on a side peripheral surface of theholder 110, capable of being operated from an outside of theholder 110, and movable in the axial direction in thelong hole 110c. As shown in Fig. 12, the cross section of the operatingmember 116 is preferably a circular shape, and a side peripheral surface of thehousing portion 112b of the writing medium 112 adjacent to the operatingmember 116 is preferably in an arc shape so as not to interfere with the operatingmember 116. This makes the operatingmember 116 rotatable (rotatable on its axis) accompanied with theslide member 114. - A hollow 118 is formed between the
holder 110 and thejoint portion 112c of the writingmedium 112, and thecap 115 is capable of being housed in this hollow 118. This hollow 118 communicates with a front end opening 110b of theholder 110, and thecap 115 and a front end portion of theslide member 114 are capable of advancing and retreating through thefront end opening 110b. - Fig. 10 shows a state in which the
tip end portion 112a of the writingmedium 112 is covered and protected with thecap 115. In order to perform writing from this state, the operatingmember 116 is operated to move with fingers. Thereby, theslide member 114 and thecap 115 advance, and thecap 115 is separated from thetip end portion 112a of the writingmedium 112. When the operatingmember 116 is rotated from this state, thecap 115 rotates with the rod-shapedportion 114a as the center of rotation, and moves from the position on the same line as thetip end portion 112a of the writing medium 112 to the position which is not on the same line. When the operatingmember 116 is further retreated, thecap 115 passes through thefront end opening 110b and is housed in the hollow 118. Thetip end portion 112a of the writingmedium 112 is completely released and can be used. - In order to keep the state in which the
cap 115 is housed in the hollow 118, theslide member 114 can be always biased rearward by an elastic member. Thecap 115 can be housed into the hollow 118 by a biasing force of the elastic member. Alternatively, thecap 115 may be lightly locked inside the hollow 118 instead of the elastic member. - After finishing writing, the
tip end portion 112a of the writing medium 112 can be covered with thecap 115 by the reverse steps from the above. When thecap 115 is retreating and surrounding thetip end portion 112a of the writingmedium 112, even if thecap 115 is slightly eccentric from the position of the same line as thetip end portion 112a of the writingmedium 112, a conical inner peripheral surface of thecap 115 contacts thecurved surface portion 112d having the curved outer peripheral surface, whereby the position of thecap 115 is automatically adjusted, or even if thecap 115 keeps slightly eccentric, thecap 115 can surely seal thetip end portion 112a in the airtight state. - In this way, the sealed state in which the
tip end portion 112a of the writingmedium 112 is protected, and the sealing released state in which thetip end portion 112a of the writingmedium 112 is released can be switched by only operating the operatingmember 116. - In the above explanation, the
cap 115 is moved by that the operatingmember 116 is moved not only in the axial direction but also is rotated by an user. Instead of such a rotating operation by the user, a controller can be provided between theslide member 114 and the holder 110 (or the writing medium 112) to move thecap 115 along the specified route. - Fig. 14 is a development view of an inner peripheral surface of the
holder 110 expressing a cam surface constructing the controller. In the drawing, acam surface 120 is formed on an inner peripheral surface of theholder 110, and an engagingprotruding portion 114b provided on theslide member 114 abuts on thiscam surface 120 and moves along a cam passage formed by thecam surface 120. The controller is constructed by thecam surface 120 and the engagingprotruding portion 114b. The cam passage has a firstlinear passage 120a and a secondlinear passage 120b for guiding theslide member 114 in the axial direction, and afirst campassage 120c and asecond campassage 120d which exist between the firstlinear passage 120a and the secondlinear passage 120b and guides theslide member 114 in the rotational direction. - In the sate in which the
cap 115 protects thetip end portion 112a of the writingmedium 112, the engagingprotruding portion 114b of theslide member 114 is at a terminal position of the secondlinear passage 120b. When the operatingmember 116 is operated to advance from this state, the engagingprotruding portion 114b starts from the secondlinear passage 120b and moves along thesecond cam passage 120d. At this time, theslide member 114 and thecap 115 rotate while advancing. When the operatingmember 116 is retreated where the engagingprotruding portion 114b passes the peak of thesecond cam passage 120d, the engagingprotruding portion 114b is moved to the firstlinear passage 120a from thesecond cam passage 120d and reaches the terminal position of the firstlinear passage 120a. Thecap 115 is separated from thetip end portion 112a of the writingmedium 112 following the movement of theslide member 114, and thereafter, rotates, and moves into the hollow 118 . In this way, thetip endportion 112a of the writingmedium 112 is released from thecap 115 and used for writing. - When the operating
member 116 is advanced again from this state, the engagingprotruding portion 114b of theslide member 114 starts from the terminal position of the firstlinear passage 120a and moves along thefirst cam passage 120c. At this time, theslide member 114 and thecap 115 rotates while advancing. When the operatingmember 116 is retreated where the engagingprotruding portion 114b passes the peak of thefirst cam passage 120c, the engagingprotruding portion 114b is moved to the secondlinear passage 120b from thefirst cam passage 120c and reaches the terminal position of the secondlinear passage 120b. Following the movement of theslide member 114, thecap 115 rotates after separating from the hollow 118, and can cover thetip end portion 112a of the writingmedium 112. - In this way, the
slide member 114 and thecap 115 can be automatically rotated in accordance with the movement in the axial direction of theslide member 114 by the controller constituted of thecam surface 120 and the engagingprotruding portion 114b. - Fig. 15 is a view showing a cam surface 120' and an engaging protruding portion 114'b which constructs another example of the controller. The engaging protruding portion 114'b is pivotally attached to the
slide member 114 via a hinge. A cam passage formed by the cam surface 120' has a first linear passage 120'a and a second linear passage 120'b which guide theslide member 114 in the axial direction and a cam passage 120' c which exists between the first linear passage 120' a and the second linear passage 120'b and guides theslide member 114 in the rotational direction. The cam passage 120'c has twopeaks 120'd and 120'e. - In the state in which the
cap 115 protects thetip end portion 112a of the writingmedium 112, the engaging protruding portion 114' b of theslide member 114 is at the terminal position of the second linear passage 120' b. When the operatingmember 116 is operated to advance from this state, the engaging protruding portion 114' b starts from the second linear passage 120' b and moves to the peak 120' e. When the operatingmember 116 is retreated where the direction of the engaging protruding portion 114' b is changed, the engaging protruding portion 114' b moves toward the first linear passage 120'a to reach the terminal position of the first linear passage 120'a. Following the movement of theslide member 114, thecap 115 separates from thetip end portion 112a of the writingmedium 112, thereafter rotates and moves into the hollow 118. In this way, thetip end portion 112a of the writingmedium 112 is released from thecap 115 and is used for writing. - When the operating
member 116 is advanced again from this state, the engaging protruding portion 114'b of theslide member 114 starts from the terminal position of the first linear passage 120' a and moves to the peak 120' d. When the operatingmember 116 is retreated where the direction of the engaging protruding portion 114'b changes, the engaging protruding portion 114'b moves toward the second linear passage 120'b and reaches the terminal position of the second linear passage 120'b. Following the movement of thisslide member 114, thecap 115 separates from the hollow 118, thereafter rotates, and can cover thetip end portion 112a of the writingmedium 112. - In this way, the
slide member 114 and thecap 115 can be automatically rotated in accordance with the movement of theslide member 114 in the axial direction by the controller constituted of the cam surface 120' and the engaging protruding portion 114'b. - Fig. 18 and Fig. 19 are views showing still another example of the controller. An
internal cylinder portion 110d is formed inside theholder 110, and theslide member 114 penetrates through the inside of theinternal cylinder portion 110d. Acam surface 121 is formed around in a circumferential direction on an inner peripheral surface of theinternal cylinder portion 110d, the engagingprotruding portion 114b provided on theslide member 114 moves along the cam passage formed by thecam surface 121. The controller is constructed by thecam surface 121 and the engagingprotruding portion 114b. The cam passage has a firstlinear passage 121a and a secondlinear passage 121b which guide theslide member 114 in the axial direction and afirst cam passage 121c and asecond cam passage 121d which exist between the firstlinear passage 121a and the secondlinear passage 121b and guide theslide member 114 in the rotating direction. - In the state in which the
cap 115 protects thetip end portion 112a of the writingmedium 112, the engagingprotruding portion 114b of theslide member 114 is at the terminal position of the secondlinear passage 121b. When the operatingmember 116 is operated to advance from this state, the engagingprotruding portion 114b starts from the secondlinear passage 121b, and advances, and thereafter the engagingprotruding portion 114b moves along thesecond cam passage 121d. When the operatingmember 116 is retreated where the engagingprotruding portion 114b advances to thesecond cam passage 121d, the engagingprotruding portion 114b moves along thesecond cam passage 121d, and reaches the terminal position of the firstlinear passage 121a. Following the movement of thisslide member 114, thecap 115 linearly advances and separates from thetip end portion 112a of the writingmedium 112, and thereafter rotates and moves into the hollow 118. In this way, thetip end portion 112a of the writingmedium 112 is released from thecap 115 and is used for writing. - When the operating
member 116 is advanced again from this state, the engagingprotruding portion 114b of theslide member 114 starts from the terminal position of the firstlinear passage 121a and advances, and thereafter moves along thefirst cam passage 121c. When the operatingmember 116 is retreated where the engagingprotruding portion 114b advances to thefirst cam passage 121c, the engagingprotruding portion 114b moves along thefirst cam passage 121c, and the engagingprotruding portion 114b moves to the secondlinear passage 121b from thefirst cam passage 121c and reaches the terminal position of the secondlinear passage 121b. Following the movement of theslide member 114, thecap 115 linearly advances and separates from the hollow 18, thereafter rotates, further linearly retreats, and can cover thetip end portion 112a of the writingmedium 112. Though not shown, a flat packing or the like may be attached inside thecap 115 to enhance sealing properties when covering thetip end portion 112a of the writingmedium 112. - In this way, the
slide member 114 and thecap 115 can be automatically rotated in accordance with the movement of theslide member 114 in the axial direction by the controller constituted of thecam surface 121 and the engagingprotruding portion 114b. - Fig. 16 shows still another embodiment. In Fig. 16, a front end portion is not shown since it is the same as in Fig. 10. In this example, an operating member 116' is integrally mounted to a rear end of the
slide member 114. Aslide cap 122 is fitted onto a rear end of theholder 110, and anelastic member 124 for biasing theslide cap 122 and theholder 110 in the direction to separate from each other is interposed between theslide cap 122 and theholder 110. The operating member 116' penetrates through a through-hole 122b formed in arear end surface 122a of theslide cap 122 and engaged with therear end surface 122a. The operating member 116' and theslide member 114 are always biased rearward with respect to theholder 110 by theelastic member 124. After the operating member 116' is pressed forward together with theslide cap 122 and the operating member 116' is swung around the through-hole 122b, the force is released, whereby thecap 115 can be moved from the sealed state of thetip end portion 112a of the writing medium 112 to the seal released state, or from the seal released state of thetip end portion 112a of the writing medium 112 to the sealed state as in the previous embodiment. In both the sealed state and seal released state, thecap 115 is biased rearward, and therefore thetip end portion 112a of the writing medium 112 can be reliably sealed in an airtight state, or can reliably housed in the hollow 118. - Fig. 20 to Fig. 22 show the drawings showing still another embodiment. In this embodiment, the
slide cap 122 in the embodiment shown in Fig. 16 becomes an operatingmember 116", and he operatingmember 116" becomes a rear end knock member mounted to a rear end portion of theholder 110. The operatingmember 116" is rotatably connected to the rear end of theslide member 114. Anelastic member 124 for biasing the operatingmember 116" and theholder 110 in the direction to separate both of them from each other is interposed between the operatingmember 116" and theholder 110. Thus, the operatingmember 116" and theslide member 114 are always biased rearward with respect to theholder 110 by theelastic member 124. - An engaging
protruding portion 114b is formed at theslide member 114, while thecam surface 120 is formed on an outer peripheral surface of a rear portion of thehousing portion 112b of the writingmedium 112, and the controller is constructed by thecam surface 120 and the engagingprotruding portion 114b. This controller can have the same construction as shown in Fig. 14. If the length of the writingmedium 112 is short, it is suitable to extend the firstlinear passage 120a to the rear end of the writingmedium 112 and open it at a rearmost end, so that when theslide member 114 retreats, the engagingprotruding portion 114b gets out of the firstlinear passage 120a from the rearmost end of the firstlinear passage 120a, and can move rearward from the writingmedium 112. Alternatively, the controller can be one same as the controller shown in Fig. 15 or Fig. 19. - The front end of the
slide member 114 protrudes to an outside of theholder 110, and thecap 115 provided at a front end portion of theslide member 114 is not housed in theholder 110 in the seal released state of thetip end portion 112a of the writingmedium 112, and is disposed beside a reduceddiameter portion 110e of the tip end portion of theholder 110. - When the force is released after the operating
member 116" is pressed forward, thecap 115 can be moved to the seal released state from the sealed state of thetip end portion 112a of the writingmedium 112, or to the sealed state from the seal released state of thetip end portion 112a of the writing medium 112 as in the previous embodiment. - For example, when the operating
member 116" is advanced in the state shown in Fig. 20, the engagingprotruding portion 114b of theslide member 114 moves along the cam passage formed by thecam surface 120 by the controller, and theslide member 114 and thecap 115 advance and rotate, and thereafter retreat. Thecap 115 rotates, and thereby moves from the eccentric state beside the writing medium 112 to the concentric position and can cover thetip end portion 112a of the writing medium 112 (Fig. 21). - When the operating
member 116" is advanced again, by the controller, the engagingprotruding portion 114b of theslide member 114 moves along the cam passage formed by thecam surface 120, and theslide member 114 and thecap 115 advance and rotate, and thereafter retreat. After thecap 115 rotates and thereby gets out of thetip end portion 112a of the writingmedium 112, thecap 115 becomes eccentric and returns to the state where thecap 115 is beside the writingmedium 112. - In each of the above embodiments, the
slide member 114 is rotated by the operation of hand and fingers to the operatingmember 116, or by thecontroller 114b, 114'b, 120, 120' and 121, but the present invention is not limited to this, and when theslide member 114 is constructed by a flexible material, theslide member 114 itself bends and deforms instead of theslide member 114 rotating, and thereby thecap 115 can be rotated between the concentric position with thetip end portion 112a of the writingmedium 112 and the eccentric position to thetip end portion 112a of the writingmedium 112. - In some of the above embodiments, the
cap 115 and the operatingmember 116 are formed integrally with theslide member 114, but the present invention is not limited to this, and it is possible to couple thecap 115 or the operatingmember 116 as a separate component to theslide member 114 by optional coupling means. Connection of thecap 115 or the operatingmember 116 and theslide member 114 is not limited to integral connection, but may be the connection in the range in which the operatingmember 116 or thecap 115 can move following the movement of theslide member 114 in the axial direction. - While the invention has been described in terms of several preferred embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the appended claims.
Claims (12)
- An instrument comprising:a holder for holding a medium;a cap capable of covering a tip end portion of the medium;an operating member provided to be capable of knocking with respect to the holder to attach and detach the cap; anda rotational transform mechanism connecting cap to the operating member;wherein the rotational transform mechanism advances the cap in accordance with one knock of the operating member in the axial direction, the rotational transform mechanism then rotates the cap around an axis parallel to the axial direction, and then retreats the cap; andwherein with each knock of the operating member, a state in which the cap covers the tip end portion of the medium and a state in which the cap allows the tip end portion of the medium to be exposed are switchable.
- The instrument according to claim 1, wherein said rotational transform mechanism comprises a knock cam connected to said operating member and unrotatable but movable in the axial direction in a slide axial hole provided in the holder, a cam body provided on an inner peripheral surface of the slide axial hole and having a cam surface facing to a front and inclined in an axial direction, a rotary cam connected to said cap and movable in an axial direction with respect to the slide axial hole inside the slide axial hole, and an elastic member for biasing the rotary cam rearward,
wherein the knock cam has a cam surface facing to the front and inclined in the axial direction, and rotation of the rotary cam is guided by the cam surfaces of the knock cam and the cam body. - The instrument according to claim 1 or 2, wherein the cap rotates 180 degrees in accordance with one knock operation of said operating member.
- The instrument according to any one of claims 1 to 3, wherein the holder is provided with a hollow portion, which houses at least a part of cap in a state in which the cap allows the tip end portion of the medium to be exposed, at a tip end portion of said holder.
- An instrument including:a holder for holding a medium;a tip end portion of which is protruded forward from the holder;a slide member provided in the holder to be movable in an axial direction;a cap connected to a tip end portion of the slide member so as to cover a tip end portion of the medium; andan operating portion connected to the slide member and movable in the axial direction so as to be operated from an outside of the holder.
- The instrument according to claim 5, wherein a hollow portion for housing said cap is provided in the vicinity of a tip end portion of the holder.
- The instrument according to claim 5 or 6, further including an elastic member for biasing the slide member rearward with respect to the holder.
- The instrument according to any one of claims 5 to 7, wherein a controller for rotating the slide member and the cap in accordance with the movement in the axial direction of the slide member is provided between one of the holder and the medium and the slide member.
- The instrument according to claim 8, wherein said controller comprises a cam surface provided on the holder, and the engaging protruding portion provided on the slide member to work in cooperation with the cam surface.
- The instrument according to any one of claims 5 to 9, wherein the operating portion includes a side knock member mounted to a side portion of the holder.
- The instrument according to any one of claims 5 to 9, wherein said operating portion includes a rear end knockmember mounted to a rear end portion of the holder.
- The instrument according to any one of claims 1 to 11, wherein a curved surface portion is provided on the tip end portion of the medium to keep sealing properties between the tip end portion and the cap.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001198579 | 2004-07-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1614547A2 true EP1614547A2 (en) | 2006-01-11 |
EP1614547A3 EP1614547A3 (en) | 2007-07-04 |
Family
ID=35464442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04255507A Withdrawn EP1614547A3 (en) | 2004-07-05 | 2004-09-10 | Writing Instrument |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1614547A3 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1476107A (en) * | 1922-02-08 | 1923-12-04 | Rudderham Thomas Edward | Fountain pen |
US1859775A (en) * | 1930-09-24 | 1932-05-24 | Lester J Hyams | Attachment for pencils and like instruments |
JPH0999688A (en) * | 1995-10-05 | 1997-04-15 | Tomotoyo Kobayashi | Writing instrument with cap |
US20040028453A1 (en) * | 2002-07-25 | 2004-02-12 | Hiroyuki Kanari | Writing instrument |
-
2004
- 2004-09-10 EP EP04255507A patent/EP1614547A3/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1476107A (en) * | 1922-02-08 | 1923-12-04 | Rudderham Thomas Edward | Fountain pen |
US1859775A (en) * | 1930-09-24 | 1932-05-24 | Lester J Hyams | Attachment for pencils and like instruments |
JPH0999688A (en) * | 1995-10-05 | 1997-04-15 | Tomotoyo Kobayashi | Writing instrument with cap |
US20040028453A1 (en) * | 2002-07-25 | 2004-02-12 | Hiroyuki Kanari | Writing instrument |
Also Published As
Publication number | Publication date |
---|---|
EP1614547A3 (en) | 2007-07-04 |
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