JP2009178998A - Coating implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem with the conventional piston style ink suction mechanism wherein a suction piston mistakenly moves forward when the operation knob thereof is unintentionally rotated while being used for writing or carried along thereby the ink in the ink receiving chamber is pushed out in a large amount through the pen tip and causes significant smears on the paper or inside the pocket. <P>SOLUTION: The coating implement includes an opening formed anterior to the ink receiving chamber, a pen tip 1 to be inserted into the opening, and a piston member 10 disposed in the ink receiving chamber 9b in a forward and backward movable manner, enabling shifting of the piston member by rotating action of the rotation member disposed posterior to the ink receiving chamber and also enabling connection or disconnection between the rotation member and the piston member. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an applicator in which an opening is formed in front of an ink storage chamber, a pen tip is inserted into the opening, and a piston member is disposed in the ink storage chamber so as to be movable back and forth.

There is an ink receiving chamber with an ink discharge hole at the front end, and a suction piston with a piston rod is arranged in the ink receiving chamber, and this suction piston is formed in the housing part and sucked A piston mechanism for a fountain pen that can be reciprocated in an axial direction via a first screw region that is screwed with a piston rod of a piston, and the piston rods engage with each other telescopically. Consisting of two piston rod parts, one piston rod part carrying the suction piston, the other piston rod part screwing into its first threaded area, and both piston rod parts of the piston rod being There is a fountain pen piston mechanism that is screwed together by a second screw area, the second screw area having a screw direction opposite to the screw direction of the first screw area. That.
That is, the ink suction mechanism sucks ink into the ink receiving chamber by reciprocating the suction piston in the axial direction by the operation knob.
JP 7-290873 A

  However, in the ink suction mechanism described above, if the operation knob is unintentionally rotated during writing work or carrying, the suction piston moves forward, and as a result, the ink in the ink receiving chamber is transferred to the pen. In some cases, the paper was pushed out in large quantities through the tip, and the inside of the paper or the pocket was significantly stained.

  The present invention is an applicator in which an opening is formed in front of an ink storage chamber, a pen tip is inserted into the opening, and a piston member is disposed in the ink storage chamber so as to be movable back and forth. The gist of the invention is that the movement of the piston member is performed by the rotation of a rotating member disposed behind the ink storage chamber, and the rotating member and the piston member can be connected and disconnected.

  The present invention is an applicator in which an opening is formed in front of an ink storage chamber, a pen tip is inserted into the opening, and a piston member is disposed in the ink storage chamber so as to be movable back and forth. The piston member is moved by a rotating operation of a rotating member disposed behind the ink storage chamber, and the rotating member and the piston member can be connected / disconnected. The problem of being pushed out from the tip can be prevented as much as possible.

  A first example will be described with reference to FIGS. In FIG. 1, the writing instrument of the present invention is roughly divided into three parts. A pen tip portion for writing, a shaft cylinder portion for storing ink, and an ink suction portion for sucking ink.

  The nib portion includes a nib 1, a pen nib 2 that contacts the nib 1, a core 3 that is inserted into the pen nib 2, and a nib holder 4 that interposes the nib 1 and the pen nib 2. The O-ring 5 provided in the outer peripheral groove 4a of the pen tip holder 4 and the neck 6 for inserting the pen tip holder 4 and the O-ring 5 are included. A decorative ring 7 and a decorative ring 8 for the purpose of appearance decoration are provided at the front end portion and the intermediate portion of the neck 6.

  The shaft tube portion is a shaft tube 9 having a hole penetrating in the axial direction, and the neck 6 of the pen tip portion is inserted into the front end of the shaft tube 9. The shaft tube 9 is an ink storage chamber 9b that stores ink therein.

The ink suction part is attached to the rear part of the shaft cylinder part. The ink suction portion includes a piston 10, a piston seal 11 surrounded in front of the piston 10, a rotation stopper 12 fixed to an intermediate portion of the shaft cylinder 9, and a rotor disposed at a rear portion of the rotation stopper 12. 13, a rotor holder 14 disposed on the front outer periphery of the rotor 13, a cam 17 rotatable with respect to the rotor 13, a spring 16 of a resilient member located behind the cam 17, the cam 17 And a knob 18 to which the cam 17 is fixed.
The piston 10 includes a large-diameter convex portion 10a and a cross-sectional small-diameter portion 10b formed behind the large-diameter convex portion 10a. The large-diameter convex portion 10 a is covered with a piston seal 11 made of an elastic member, and the outer periphery of the piston seal 11 is in sliding contact with the inner peripheral surface of the shaft tube 9. Further, a male screw 10c is formed in an arc portion on the outer periphery of the small diameter portion 10b. The oval small diameter portion 10 b is inserted into the piston rotation stopper 12, and a male screw 10 c is screwed into a female screw formed on the inner surface of the rotor 13.
A collar 12 a is formed on the outer periphery of the rear portion of the piston rotation stop 12, and the front end of the collar 12 a is in contact with the step of the shaft tube 9. Further, the rear end portion of the collar 12a is in contact with the front end portion of the rotor holder 14, and the operation in the axial direction and the rotational direction is restricted. Further, an oval hole 12b is formed in the piston rotation stopper 12, and a small diameter portion 10b of the piston 10 is inserted therein. As a result, the relative rotation of the piston 10 with respect to the shaft tube 9 is prevented.
The rotor 13 abutting on the rear end portion of the piston rotation stop 12 is cylindrical and has a step 13a formed on the outer periphery, and a female screw that engages with the male screw 10c of the piston 10 is formed on the inner periphery.
The rotor holder 14 is a cylinder, has an external thread 14a on the outer periphery, and has a step 14b on the inner periphery. The outer peripheral male screw 14a is screwed and fixed to the shaft tube 9, and the inner peripheral step 14b clamps the outer periphery of the rotor 13 to restrict the movement of the rotor 13 in the axial direction. .
A collar 15b is formed on the outer periphery of the cam receiver 15, and a rear portion of the rotor 13 is fixed on the inner periphery. Further, at the front end portion of the cam receiver 15, a mountain-shaped taper 15 a is formed at two opposing positions.
The spring 16 is a compression spring stretched between the cam 17 and the cam receiver 15, and biases the knob 18 against the shaft tube 9.
A flange 17a is formed on the outer periphery of the front of the cam 17, and a plurality of mountain-shaped tapers 17b are formed on the rear end surface of the flange 17a. A through hole larger than the rotor 13 is formed in the inner periphery of the cam 17, and the front inner peripheral surface of the knob 18 is fixed to the outer flange 17 a.

Next, the method for sucking ink into the shaft cylinder 9 (ink storage chamber 9b) of the present invention will be specifically described. Even if the knob 18 is gripped and rotated in the state of FIG. This is because the taper 17b of the cam 17 abutting on the knob 18 does not contact (engage) the taper 15a of the cam receiver 15, that is, the knob 18 and the piston 10 are not connected, and the rotation of the knob 18 This is because it is not transmitted to the rotor 13 fixed to the cam receiver 15.
When the ink is sucked into the ink storage chamber 9b, the pen tip portion is immersed in the ink fountain or the like to the middle portion. In this immersed state, the knob 18 is pulled in the direction opposite to the pen tip, that is, backward. Subsequently, the knob 18 is rotated counterclockwise while maintaining the pulled state. By pulling the knob 18, the taper 17 b of the cam 17 fixed to the knob 18 comes into contact with and engages with the taper 15 a of the cam receiver 15, that is, the knob 18 and the piston 10 are connected to each other. The rotor 13 fixed to the receiver 17 rotates. The rotation of the rotor 13 advances the screwed piston 10 in the direction of the pen tip.
The piston 10 advances by the rotation of the knob 18 until the piston seal 11 contacts the step 9a of the shaft tube 9 (see FIG. 4).
Here, when the knob 18 is rotated clockwise, the piston 10 starts to move backward. Due to the backward movement of the piston 10, the inside of the shaft cylinder 9 (ink storage chamber) becomes negative pressure, and by this negative pressure action, the ink in the ink fountain enters the shaft cylinder 9 (ink storage chamber) via the pen tip portion. Pulled and filled.
The piston 10 moves backward until the protrusion 10a contacts the front end of the piston rotation stop 12. When the hand is released from the knob 18 at the last retracted position of the piston 10, the knob 18 is pulled back in the direction of the shaft tube 9 due to the repulsion of the spring 16 and abuts against the rear end surface of the shaft tube 9. At this time, the engagement between the taper 17b of the cam 17 and the taper 15a of the cam receiver 15 is also released, i.e., a non-connected state, and the idle rotation with respect to the knob 18 piston 10 is performed again.
Even if the spring 16 is not provided, the ink can be sucked in if it is pushed in until the knob 18 is brought into contact with the shaft tube 9. In addition, when the ink is sucked, the knob 18 is first rotated counterclockwise and then clockwise. However, if the direction of the screw of the piston 10 and the rotor 13 is reversed, the knob 18 is rotated clockwise first and then next. Inhalation is possible by rotating counterclockwise.

A second example will be described with reference to FIGS. This second example is also composed of three parts. A pen tip portion for writing, a shaft cylinder portion for storing ink, and an ink suction portion for sucking ink.
Since the configuration of the pen tip portion is the same as that of the first example, description thereof is omitted. The ink suction portion includes a piston 20, a piston seal 21 covered in front of the piston 20, a rotation stopper 22 fixed to the inner surface of the shaft cylinder 19, a rotor 23 in which the rotation stopper 22 is disposed, A rotor holder 24 disposed on the outer periphery of the rotor 23 and fixed to the shaft cylinder 19, a knob receiver 25 disposed behind the rotor 23, and the knob receiver 25 from the shaft cylinder 19 A knob receiving stopper 26 for preventing dropping off, a spring 27 stretched between the rotor holder 24 and the knob receiving 25 in a compressed state, and a knob 28 which is covered and fixed to the knob receiving 25. Yes.

The piston 20 is composed of a large-diameter convex portion 20a and a cross section formed behind the large-diameter convex portion 20a from an oval small-diameter portion 20b. The large-diameter convex portion 20 a is covered with a piston seal 21 made of an elastic member, and the outer periphery of the piston seal 21 is in sliding contact with the inner peripheral surface of the shaft cylinder 19. Further, a male screw 20c is formed in an arc portion on the outer periphery of the small diameter portion 20b. The oval small-diameter portion 20 b is inserted into the piston rotation stop 22, and the male screw 20 c is screwed into a female screw formed on the inner surface of the rotor 23.
A collar 22 a is formed on the outer periphery of the rear portion of the piston rotation stop 22, and the front end of the collar 22 a is in contact with the step of the cylindrical shaft 19. Further, the rear end portion of the collar 22a is in contact with the front end portion of the rotor holder 24, and the operation in the axial direction and the rotational direction is restricted. Further, an oval hole 22b is formed in the piston rotation stopper 22, and an oval small diameter portion 20b of the piston 20 is inserted therein. Thereby, relative rotation of the piston 20 with respect to the shaft cylinder 19 is prevented.
The rotor holder 24 is a cylinder, and an external thread 24a is formed on the outer periphery, and a step 24b is formed on the inner periphery. The outer peripheral male screw 24a is screwed and fixed to the shaft cylinder 19, and the inner peripheral step 24b regulates the movement of the rotor 23 in the axial direction by sandwiching the outer periphery of the cylinder of the rotor 23. ing.
The rotor 23 in contact with the rear end portion of the piston rotation stop 22 is cylindrical and has a step on the outer periphery, and a female screw that engages with the male screw 20c of the piston 20 is formed on the inner periphery. Furthermore, a plurality of mountain-shaped tapers 23 a are formed at the rear end of the rotor 23.
The rotor holder 24 is cylindrical and has an external thread 24a formed on the outer periphery, and a step 24b formed on the inner periphery. The outer peripheral male screw 24a is screwed and fixed to the shaft cylinder 19, and the inner peripheral step 24b fixes the cylindrical outer periphery of the rotor 23, thereby restricting movement of the rotor 23 in the axial direction. is doing.
Further, a knob receiver 25 is disposed behind the taper 23 a of the rotor 23. A taper 25 a that engages and disengages with the taper 23 a of the rotor 23 is formed at the front end of the knob receiver 25, and a collar 25 b is formed on the outer periphery in front of the knob receiver 25. A knob 28 is covered at the rear of the knob receiver 25.
Further, a knob receiver 26 that prevents the knob receiver 25 from falling off the shaft cylinder 19 is engaged with the collar 25 b of the knob receiver 25, and the knob receiver 26 is fixed to the inside of the shaft cylinder 19. .

The ink suction method into the shaft cylinder 9 (ink storage chamber) of the second example will be specifically described. Even if the knob 28 is gripped and rotated in the state of FIG.
This is because the taper 25a of the knob receiver 25 that contacts the knob 28 does not contact (engage) the taper 23a of the rotor 23, that is, the knob 28 and the piston 20 are not connected, and the knob 28 is not rotated. This is because it is not transmitted to the rotor 23.
When the ink is sucked into the ink storage chamber 19b, the pen tip portion is immersed in the ink fountain or the like to the middle portion. In this immersed state, the knob 28 is pushed in the same direction as the pen tip, that is, the knob 28 is pushed. Next, the knob 28 is rotated counterclockwise while maintaining the depressed state. When the knob 28 is pushed in, the taper 25a of the knob receiver 25 provided on the knob 28 comes into contact with and engages with the taper 23a of the opposing rotor 23, that is, the knob 28 and the piston 20 are connected. The rotor 23 is rotated. The rotation of the rotor 23 advances the screwed piston 20 in the direction of the pen tip.
The piston 20 moves forward by the rotation of the knob 28 until the piston seal 21 contacts the step 19a of the shaft cylinder 19 (see FIG. 8).
Here, when the knob 28 is rotated clockwise, the piston 20 starts to move backward. By the retreating operation of the piston 20, the inside of the shaft cylinder 19 (ink containing chamber) becomes negative pressure, and the ink in the ink fountain is put into the shaft cylinder 9 (ink containing chamber) via the pen tip by this negative pressure action. Pulled and filled.
The piston 20 moves backward until the large-diameter convex portion 20 a comes into contact with the front end portion of the piston rotation stopper 22. When the hand is released from the knob 28 at the last retracted position of the piston 20, the knob 28 is retracted due to the repulsion of the spring 27, and a gap hair is formed again between the rear end portion of the shaft cylinder 19. At this time, the engagement between the taper 23a of the rotor 23 and the taper 25a of the knob receiver 25 is also released, that is, it is in a disconnected state, and the knob 28 is idled again with respect to the piston 20.
As described above, in the first and second examples, the mechanism for transmitting the rotation by pulling or pushing the knob is shown. However, the mechanism is not limited to the engagement by the taper unevenness, such as rubber or a rough surface having a large friction. It is also conceivable to transmit by contact of the collet chuck or the collet chuck.

A third example will be described with reference to FIGS. This third example is also composed of three parts. A pen tip portion for writing, a shaft cylinder portion for storing ink, and an ink suction portion for sucking ink.
Since the configuration of the pen tip portion is the same as that of the first example, its description is omitted. The ink suction portion includes a piston 30, a piston seal 31 covered in front of the piston 30, a rotation stopper 32 fixed to the inner surface of the shaft cylinder 29, a rotor 33 on which the rotation stopper 32 is disposed, A rotor holder 34 disposed on the outer periphery of the rotor 33 and fixed to the shaft cylinder 29, a connection pin 35 pivotally supported at the rear portion of the rotor 33, and a shaft pin rotatably supported by the connection pin 35 And a sliding member 37 rotatably attached to the rear portion of the shaft 36, a knob 38 fixed to the sliding member 37, and a lid 39 for closing the rear end portion of the knob 38. Has been.

The piston 30 has a large-diameter convex portion 30a and a cross section formed behind the large-diameter convex portion 30a is composed of an oval small-diameter portion 30b. The large-diameter convex portion 30 a is covered with a piston seal 31 made of an elastic member, and the outer periphery of the piston seal 31 is in sliding contact with the inner peripheral surface of the shaft tube 29. Further, a male screw 30c is formed on the arc portion of the outer periphery of the small diameter portion 30b. Further, the oval small diameter portion 30 b is inserted into the piston rotation stop 32, and the male screw 30 c is screwed into a female screw formed on the inner surface of the rotor 33.
A collar 32 a is formed on the outer periphery of the rear portion of the piston rotation stop 32, and the front end of the collar 32 a is in contact with the step of the shaft cylinder 29. Further, the rear end portion of the collar 32a is in contact with the front end portion of the rotor holder 34, and the operation in the axial direction and the rotational direction is restricted. Further, an oval hole 32b is formed in the piston rotation stopper 32, and an oval small diameter portion 30b of the piston 30 is inserted. As a result, relative rotation of the piston 30 with respect to the shaft cylinder 29 is prevented.
The rotor holder 34 is a cylinder and has an external thread 34a formed on the outer periphery, and a step 34b formed on the inner periphery. The outer peripheral male screw 34a is screwed and fixed to the shaft tube 29, and the inner peripheral step 34b sandwiches the outer periphery of the rotor 33 so as to restrict the movement of the rotor 33 in the axial direction. Yes.
The rotor 33 in contact with the rear end portion of the piston rotation stop 32 is cylindrical and has a step on the outer periphery, and a female screw that engages with the male screw 30c of the piston 30 is formed on the inner periphery. Further, a through hole that supports the shaft 36 is formed at the rear end of the rotor 33.
A connecting pin 35 having a flange at one end is pivotally supported in the through hole of the rotor 33, and the sliding member 37 is also pivotally supported. That is, the connecting pin 35 connects the rotor 33 and the shaft 36. Further, the end surface of the connecting pin 35 opposite to the flange is caulked so that the rotor 33 is prevented from coming off from the through hole.
A collar 36a is formed at the rear end of the shaft 36 connected to the rotor 33, and a cylindrical sliding member 37 is inserted so as to be slidable and rotatable. The sliding member 37 disposed on the shaft 36 is fixed to a knob 38, and a lid 39 is fixed to the rear end opening of the knob 38.

The ink suction method into the shaft cylinder 29 (ink storage chamber) of the third example will be specifically described. Even if the knob 38 is gripped and rotated in the state of FIG. 9, the sliding member 37 and the shaft 36 fixed to the knob 38 only slide and idle.
When the ink is sucked into the ink storage chamber, the pen tip portion is immersed in the ink fountain etc. to the middle portion. In this immersed state, the knob 38 is pulled in the direction opposite to the pen tip 37, that is, in the pulling direction. The cylindrical sliding member 37 fixed to the knob 38 is pulled out while maintaining the pulled state until it comes into contact with the collar of the shaft 36 (see FIG. 10).
When the knob 38 is pulled out, the connecting pin 35 that connects the rotor 33 and the shaft 36 is exposed. The knob 38 is bent around the connecting pin 35 so as to be perpendicular to the axis of the pen tip.
When the bent knob 38 is rotated clockwise with respect to the axis of the pen tip, the piston 30 moves forward until the piston seal 31 contacts the step 29a of the shaft tube 29. Here, as in the first and second examples, when the knob 38 is rotated counterclockwise, the piston 30 is retracted, and ink is sucked from the pen tip into the ink containing chamber and filled.
After filling, the bent knob 38 is returned so as to coincide with the axis of the pen tip, and then the knob 38 is advanced until it abuts against the rear end portion of the shaft tube 29.

A fourth example will be described with reference to FIG. The description of the same configuration as the first example is omitted. The ink suction portion differs in the configuration of the portion exposed from the rear end of the shaft tube 40 and the shape of the rotor 41.
Two concave grooves are formed at opposite positions on the front and rear portions of the rear end cylinder portion of the rotor 41. A projection 42a provided on the inner surface of the cylinder of the knob 42 is fitted in the concave groove 41a formed in the front, and the knob 42 rotates coaxially with the pen tip portion and is prevented from falling off from the rotor 41. Yes. In addition, a ring-shaped elastic member 43 is fitted in the concave groove 41 b formed in the rear portion of the rotor 41.
On the other hand, a through hole 42b is formed in the side surface of the cylindrical portion of the knob 42, and a button press 45 in which a button 44 is inserted is fixed in the through hole.

The ink suction method of the fourth example will be specifically described. Even if the knob 42 is gripped and rotated in the state of FIG. 12, it is merely idle. This is because slippage occurs between the button 44 of the knob 42 and the rotor 41.
To suck ink, the button 44 is pressed in a state where the pen tip portion is immersed in an ink fountain or the like, and then the knob 42 is rotated counterclockwise. By this operation, that is, by pressing the button 44, the tip of the button 44 comes into contact with the elastic body 43 of the rotor 41. By this contact, the rotation of the knob 42 is transmitted to the rotor 41 by the friction of the elastic member 43, and the piston 46 moves back and forth by the transmission of this rotation, and ink is filled.

Sectional drawing which shows the 1st example of this invention. A detailed view of the cam receiver 15. A detailed view of the cam 17. Sectional drawing which shows operation | movement of the piston. Sectional drawing which shows the 2nd example of this invention. A detailed view of the rotor 23. A detailed view of the knob receiver 25. FIG. Sectional drawing which shows operation | movement of the piston 20. FIG. Sectional drawing which shows the 3rd example of this invention. Sectional drawing which shows the process of ink inhalation. Sectional drawing which shows the process in which the knob 38 was bent. Sectional drawing which shows the 4th example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Nib 2 Pen nib 3 Core 4 Nib holder 4a Outer peripheral groove 5 O ring 6 Neck shaft 7 Front ring 8 Rear ring 9 Shaft cylinder 9a Step 9b Ink storage chamber 10 Piston 10a Large diameter convex part 10b Oval small diameter part 10c Male thread 11 piston seal 12 piston rotation stop 12a collar 12b oval hole 13 rotor 13a step 14 rotor holder 14a male screw 14b step 15 cam receiver 15a taper 15b collar 16 spring 17 cam 17a collar 17b taper 18 knob 19 shaft cylinder 19a step 19b Accommodating chamber 20 Piston 20a Large-diameter convex portion 20b Oval-shaped small-diameter portion 20c Male screw 21 Piston seal 22 Piston rotation stopper 22a Collar 22b Oval-shaped hole 23 Rotor 23a Taper 24 Rotor holder 24a Male screw 24b Step 25 Knob 25a Taper 25b Brim 26 Knob catcher 27 Spring 28 Knob 29 Shaft cylinder 29a Step 30 Piston 30a Large diameter convex part 30b Oval small diameter part 30c Male thread 31 Piston seal 32 Piston rotation stop 32a Collar 32b Oval hole 33 Rotor 34 Rotor Holder 34a Male thread 34b Step 35 Connecting pin 36 Shaft 36a Collar 37 Sliding member 38 Knob 39 Lid 40 Shaft 41 Rotor 41a Concave groove 41b Concave groove 42 Knob 42a Protrusion 42b Through hole 43 Elastic member 44 Button 45 Button press 46 Piston

Claims (2)

An applicator in which an opening is formed in front of the ink storage chamber, a pen tip is inserted into the opening, and a piston member is disposed in the ink storage chamber so as to be movable back and forth. And a piston member that can be connected / disconnected with each other by rotating the rotating member disposed behind the ink storage chamber. The applicator according to claim 1, wherein the rotating member and the piston member are connected / disconnected by relatively separating / approaching each other member.