JPH0565590U - Knocking writing instrument - Google Patents

Abstract

(57) [Abstract] [Purpose] A knock portion and a clip portion are formed in an ink tank, and the clip portion is fitted and inserted into a slit portion having a locking portion defined on the barrel, and the clip portion is used as the locking portion. Rotate and lock. [Structure] An L-shaped slit portion 3 is defined at an open end of a barrel 4. The slit portion 3 has a locking portion 9 composed of a tapered surface 10 and a step portion 11. The ink tank 6 having the writing portion 5 at one end and the knock portion 16 at the other end is wound with a clip portion including an annular ring portion 18, a base portion 19 and a stopper portion 20. When the base portion 19 is fitted into the slit portion 3 and the knock portion 16 is pressed, the base portion 19 rotates along the tapered surface 10 to the locking portion 9 and is locked by the stepped portion 11 to enable writing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 According to the present invention, the clip portion provided on the ink tank is fitted into the slit portion defined on the barrel, and the knock portion of the ink tank is pressed to allow the clip portion to enter the engaging portion of the slit portion for writing. The present invention relates to a knock-type writing instrument that is put in a stored state by releasing the lock of a clip portion.

[0002]

[Prior Art]

 Conventionally, a knock member composed of a separate component is brought into contact with the end of an ink tank built into a writing instrument, and the knock operation is performed by pressing the knock section, and the writing section provided at the tip of the ink tank is barreled. It is made to be writable by projecting from it, and the writable state is maintained by the engagement and holding by the knock member.On the other hand, when it is stored, the knock member is released and the spring of the spring installed inside is pushed. It is known that the structure is such that it is housed in the barrel by the force (see Japanese Utility Model Publication No. 64-3488 and Japanese Utility Model Publication No. 2-56691).

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional writing instrument, the knock member for performing the knocking operation is disposed separately from the ink tank, which has a problem that the structure is complicated and the number of parts is large, resulting in a cost disadvantage. ..

Further, since the ink tank and the knock member are separately formed, a mechanism for connecting the knock member and the ink tank is provided in the main body, and only the portion occupied by this mechanism has the shape of the ink tank. However, there is a problem in that the life of the writing instrument is shortened due to the decrease in the amount of ink that is stored due to the decrease in the amount of ink.

In view of this point, the present invention provides a clip portion in an ink tank that also serves as a knock portion, and inserts the clip portion into a slit portion defined at the end portion of the barrel, and performs a knock operation to provide a clip portion in the slit portion. The clip part is rotated in one direction and locked to the stop part.

[0006]

[Means for Solving the Problems]

 In order to achieve this object, the present invention has a valer having an opening through which a writing part comes in and out, and an axially extending slit part having an engaging part. And an ink tank that stores ink inside and is provided between the barrel and the ink tank, and an ink tank having a writing portion on one side and a knock portion on the other side, and urges the ink tank toward the open end side. An elastic body and a base portion of a clip portion provided on the ink tank via the base portion are fitted into the slit portion, and when the knock portion is pressed against the elastic body, the base portion is rotated in one direction. It was designed to be locked in the stop.

[0007]

[Action]

 When the knock part of the ink tank is pressed, the base part of the clip part moves along the slit part defined on the barrel, rotates in one direction, and enters the locking part. This allows the writing instrument provided in the ink tank to project from the barrel for writing. When the clip part is rotated in the opposite direction, the lock is released and the elastic body returns to the initial position by the elastic force.

[0008]

【Example】

 The writing instrument 1 of the present invention shown in FIGS. 1 to 8 has a barrel 4 having an opening 2 at one end and a slit portion 3 defined in the axial direction at the other end, and a writing portion 5 formed at the tip to store ink. An ink tank 6 stored therein, a clip portion 7 wound around the ink tank 6 and fitted in the slit portion 3, and an elasticity which is disposed in the barrel 4 and urges the ink tank 6 to the other end side of the barrel 4. It consists of body 8.

The barrel 4 is formed of, for example, a transparent synthetic resin and has a cylindrical shape whose both ends are open. One opening end defines an opening 2 through which the writing part 5 of the ink tank 6 is inserted. In one example of the other open end, a substantially L-shaped slit portion 3 having an appropriate length and width is defined along the axial direction (see FIG. 2).

A taper surface 10 is formed on the wall surface of the tip of the slit portion 3 toward the laterally bulging locking portion 9 at the front end of the slit portion 3, and a right-angled step portion 11 is formed at the rear portion of the locking portion 9. It is formed. The angle B of the taper surface 10 of the engaging portion 9 is within the range of 20 to 90 degrees, and the angle B of the stepped portion 11 is within the range of 45 to 90 degrees (see FIG. 5). Further, stoppers 12 that bulge from both sides are provided at the ends of the slit portion 3 so as to close the slit portion 3, and the clip portion 7 is unlocked and when the elastic body 8 returns the clip portion. It plays the role of stopping 7 in the slit part 3.

The ink tank 6 includes a front plug 13 and a back plug 14. The front plug 13 has a cylindrical shape, the front half on one end side has a small diameter 15 and the other end side is open, and the writing portion 5 in which a felt is hardened to form a core is inserted inside the small diameter portion 15. .. The back plug 14 also has a bottomed tubular shape, and the bottomed portion forms a knock portion 16.

The front plug 13 and the back plug 14 are fitted to each other, and a tubing 17 formed by the stuffing is provided with an ink-filled batting 17, and the core is inserted into the batting 17. .. Further, the clip portion 7 is wound when the front plug 13 and the back plug 14 are fitted (see FIG. 4).

The clip portion 7 includes an annular ring portion 18, a base portion 19 integrally formed with the ring portion 18, and a stopper portion 20 extending from the base portion 19 and serving as a release button for inserting into a pocket or the like. Consists of. The ring portion 18 is inserted between the front plug 13 and the back plug 14 when the ink tank 6 is assembled as described above, and is rotatable about its axis. The base portion 19 has a shape similar to the locking portion 9 of the slit portion 3 defined on the barrel 4. That is, the front portion is formed into a tapered surface and the rear portion is formed into a right angle. The ring portion 18 may be formed by cutting out a part of an annular shape to hold the ink tank 6 (see FIG. 10).

The ink tank 6 is disposed in the barrel 4 via the elastic body 8, and the base portion 19 of the clip portion 7 is fitted into the groove of the slit portion and abuts on the stopper 12 ( (See FIG. 6).

The operation of the writing instrument 1 having the above configuration will be described in detail.

In a normal state where the writing unit 5 is housed in the barrel 4, the ink tank 6 is biased by the elastic body 8 and moves in a direction away from the opening 2 of the barrel 4. At this time, as shown in FIG. 6, the base portion 19 of the clip portion 7 comes into contact with the stopper 12 of the slit portion 3 defined in the barrel 4, so that it does not jump out of the barrel 4.

In use, when the knock portion 16 of the ink tank 6 is pressed against the elastic body 8, the clip portion 7 slides leftward along the groove portion of the slit portion 3 shown in FIG. The writing part 5 projects from the opening 2 of the barrel 4, and the base part 19 abuts on the tapered surface 10. When further pressed, the base portion 19 moves along the tapered surface 10 toward the locking portion 9, and only the ring portion 18 wound around the ink tank 6 rotates in one direction, so that the slit portion 3 Intrudes into the locking portion 9 which bulges out. When the hand is released from the knock portion 16, the elastic body 8 elastically moves the base portion 19 in the locking portion 9 to abut and lock the step portion 11. Therefore, the writing unit 5 can be held in a state of protruding from the barrel 4.

When the writing unit 5 is housed in the barrel 4, when the stopper 20 is pressed so as to rotate leftward, the base 19 slides and disengages from the step 11 to urge the ink tank 6. The elastic force of the elastic body 8 causes the elastic body 8 to move along the slit portion 3 and come into contact with the stopper 12. At the same time, the writing unit 5 is also stored in the barrel 4.

The ink tank 30 shown in FIGS. 9 and 10 is another embodiment, and the barrel 4 is omitted since it is the same as that of the first embodiment, and the same components are given the same reference numerals. And detailed explanation is omitted.

The ink tank 30 has a cylindrical shape with a bottom and a predetermined length. The bottomed portion forms the knock portion 16, and the other side becomes the small diameter portion 15 into which the core is inserted to form the writing portion 5. In addition, batting 17 impregnated with ink is arranged inside. An annular groove portion 31 is formed near the knock portion 16, and a ring portion 32 having a C-shaped cross section with a partially cut-out annular portion, a base portion 19 formed on the ring portion 32, and a stopper. A clip portion 33 including the portion 20 is fitted into the groove portion 31.

In this writing instrument, the ink tank 30 can be easily molded and can be easily assembled.

The ink tank 40 shown in FIG. 11 is the third embodiment, and the same components are designated by the same reference numerals and detailed description thereof will be omitted.

The ink tank 40 has a small diameter portion 15 on one side and a knock portion 16 on the other side. A writing portion 5 is formed on the small-diameter portion 15, and a batting (not shown) impregnated with ink is arranged inside. A base portion 19 is integrally formed on one side of the ink tank 40, and a stopper portion 20 is formed from the base portion 19.

In this writing instrument, when the knock portion 16 is pressed during use, the base portion 19 slides along the slit portion of the barrel, the writing portion 5 projects from the barrel, and the taper surface moves to the locking portion. Intrude and lock at the step. At this time, the ink tank 40 also slightly rotates toward the locking portion.

[0025]

[Effect of the device]

 As described above, according to the present invention, the base portion of the clip portion provided on the ink tank in which the knock portion is formed is fitted into the slit portion of the barrel, and when the knock portion of the ink tank is pressed, the base portion is the locking portion of the slit portion. Since the base is smoothly rotated to lock, the base can be smoothly rotated to the lock to enable locking, and the locking can be released easily by simply moving the locked clip. become.

Further, since the operation is performed by the knock portion formed in the ink tank and the clip portion, the ink tank can be made larger, the ink storage amount can be increased, and the life of the writing instrument can be extended.

Further, since the writing instrument is constructed with a small number of parts, it can be easily incorporated and can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a writing instrument according to the present invention.

FIG. 2 is a partial perspective view of a barrel.

FIG. 3 is a partial perspective view showing a main part of an ink tank.

FIG. 4 is an exploded configuration diagram of an ink tank.

FIG. 5 is an enlarged view of a slit portion.

FIG. 6 is a partial cross-sectional perspective view of a writing instrument.

FIG. 7 is a vertical sectional view of the writing instrument in a writable state.

FIG. 8 is a partial cross-sectional perspective view of a main part in a writable state.

FIG. 9 is a perspective view of a main part of an ink tank according to a second embodiment.

FIG. 10 is another embodiment of the clip portion.

FIG. 11 is a perspective view of an ink tank according to a third embodiment.

[Explanation of symbols]

 1. Writing instrument 3. Slit part 4. Barrel 6. Ink tank 7. Clip section 8. Elastic body 9. Locking part 10. Tapered surface 11. Step part 16. Knock part 18. Ring part 19. Base part

Claims (7)

[Scope of utility model registration request] 1. A barrel having an opening through which a writing portion comes in and out, and extending in the axial direction from the open end of the other side, and defining a slit portion having a locking portion, and storing ink inside thereof. An ink tank having a writing part on one side and a knock part on the other side, and an elastic body arranged between the barrel and the ink tank for urging the ink tank toward the open end side, When the base of the clip provided on the ink tank via the base is inserted into the slit and the knock is pressed against the elastic body, the base rotates in one direction and enters the locking part and locks. A knock-type writing instrument characterized by: 2. The knock-type writing instrument according to claim 1, wherein the slit portion has a locking portion having a tapered surface at a tip and a stepped portion at a rear portion. 3. The knock-type writing instrument according to claim 1, wherein the clip portion is wound around the ink tank via an annular ring portion, and the ring portion is provided with a base portion. 4. The knock-type writing instrument according to claim 1, wherein the clip portion is fitted in an annular groove portion formed in the ink tank. 5. The knock-type writing instrument according to claim 1, wherein the clip portion is integrally formed with the ink tank via the base portion. 6. The angle of the tapered surface formed in the slit portion is set to 20 to 90 degrees, and the angle of the step portion of the locking portion is set to 45 to 90 degrees, respectively. Item 2. The knock-type writing instrument according to item 2. 7. The knock-type writing instrument according to claim 1, wherein the ink tank is divided into a back plug and a front plug and fitted together to be integrally formed.