JP2527014Y2 - Knock type writing instrument - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a locking step which is provided on a clip and an engaging projection provided on a pencil pencil in a state in which a writing tip protrudes from a shaft tip opening. The present invention relates to a knock-type writing instrument configured to retreat a mechanical pencil writing body by the resilience of a coil spring by canceling the engagement so that a writing tip portion is immersed in a shaft.

[0002]

2. Description of the Related Art A writing instrument is fixed to a breast pocket of a garment with the writing section protruding from a shaft tip opening so as not to stain the garment with ink or the like of the writing section. There is a writing implement. As an example, as shown in FIGS. 5 and 6, an engaging portion 3 # is provided on a tip ball portion 2 # of a clip 1 #, and a shaft cylinder 4 # facing the engaging portion 3 #.
A window hole 5 可能 な through which the ball portion 2 没 can be immersed is provided on the side surface of the knuckle 6 ｀, and an engagement portion 7 設 け is also provided on the side surface of the knock body 6 、. 9 ｀ protruding from the shaft tip opening 10 ｀, the engaging portion 3 ｀ of the clip 1 ｀.
And the engaging portion 7 # of the knocking body 6 # is locked and fixed, and the pressing plate portion 11 # provided at the rear end of the clip 1 # is pushed down in the axial cylinder direction. Lift up to engage the engaging portion 3 # of the ball portion 2 # and the engaging portion 7 of the knock body 6 #.
There is one in which the refill 8 ー ル and the knocking body 6 後 are retracted by the spring 12 と き に when the locked state of 解 消 is released, and the writing portion 9 ｀ of the refill 8 ｀ is immersed inside the shaft. That is, when the writing portion 9 # protrudes from the shaft tip opening 10 #, the engaging portion 3 # of the clip 1 # and the engaging portion 7 # of the knock body 6 # are locked to disable use of the clip 1 #. Therefore, if the clip 1 ｀ is forcibly lifted and fixed to the pocket or the like, the engagement between the engagement portion 3 ク リ ッ プ of the clip 1 ｀ and the engagement portion 7 of the knock body 6 ｀ is prevented. Since the locked state of ｀ is cancelled, the refill 8 応 retreats inevitably by the spring 12 し て and the writing portion 9
｀ is immersed in the inside of the period to prevent the writing unit 9 ｀ from staining the clothes by ink or the like.

[0003] In addition, a pencil pen is stored in a shaft cylinder so that it can be shifted, and the rear end is knocked so that the writing tip protrudes from the tip of the shaft and the knock or a separately provided operating unit is operated. 2. Description of the Related Art There has been known an apparatus in which a protruding state is released to accommodate a writing tip. However, if the conventional writing tip is inserted into the breast pocket with the writing tip protruding from the tip of the shaft, there is a risk that the writing tip may damage clothes, break the core, or extremely damage the body Exists.

[0004]

By the way, in the above-mentioned writing instrument of the prior art, the clip 1 is used to release the engagement between the engaging portion 3 # of the clip 1 # and the engaging portion 7 # of the knocking body 6 #. The clip tip ball portion 2 # is lifted by pressing down the rear end pressing plate portion 11 # in the axial cylinder direction. In this structure, the mounting base portion 13 of the clip 1 # is attached.
Since the load is repeatedly applied to 部, there is a problem that the mounting base 13 へ is easily deflected. For this reason, it is impossible to make the mounting base 13 製 made of a synthetic resin. Did not get. Therefore, it is impossible to integrally mold the clip with the barrel, and the cost is increased due to the material cost and the assembly cost. There was a problem that variation occurred.

The object of the present invention is to solve the above problems and to break clothes, break the core, etc. even if the writing tip of the mechanical pencil is inserted into the breast pocket with the writing tip protruding from the shaft tip opening. The elimination of the risk of harm.

[0006]

In order to solve the above-mentioned problem, a knock-type writing instrument according to the present invention has an engaging step formed at a tip end of a clip fixed to a rear end base of a barrel. The ball portion is fixed, and the pencil pencil is stored in the barrel with the coil spring urged backward by the coil spring, and the pencil tip of the pencil pencil that moves in the axial direction is moved from the tip of the shaft. Providing an engaging projection that locks with the engaging step of the clip ball portion in a protruding state, and an unlocking button having a protrusion opposite to the front surface of the ball portion is appropriately moved back and forth along the side of the barrel The sharp pencil writing body protruding from the rear end of the barrel is knocked at the rear end to move forward to move the engaging step of the clip ball portion upward to engage the mechanical pencil writing body. Make the writing part protrude from the shaft tip opening with When the lock release button is pressed to the rear of the barrel, the protruding portion pushes the ball portion up again while pressing the side surface of the ball portion to release the locked state and the mechanical pencil retreats. The writing tip is stored in the shaft,
A step is provided in the slit facing the clip of the shaft cylinder, in which the engaging projection of the mechanical pencil writing body is movably fitted, so that the mechanical pencil writing body does not come off the shaft cylinder. Thus, when the mechanical pencil is inserted from the rear end of the barrel, the engaging projection is expanded and fitted in the stepped portion, so that the engaging projection comes into contact.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiment of the present invention shown in FIGS. 1 to 4 is made of resin and has an axial slit 4 on the side surface extending from a rear end opening edge to a position a required distance forward, and a slit 4 substantially at the center thereof. A step 5 having a slope 24 is formed on both side walls forming the base, and a base 3 is protruded from the rear end side surface of the slit 4, and the slit 4 is provided in communication with the base 3. or,
A mounting groove (not shown) is provided on the inner surface of the base 3, and a mounting portion of the clip plate 10 having a U-shaped bent piece at the rear end and legs at both lateral ends at the rear end. 9 is inserted into the mounting groove of the base portion 3 and crimped, and the mounting portion 15 having legs at both lateral ends at the end of the clip plate 10 is attached to the ball portion 11.
And crimped. A groove 13 is formed in the lower part of the ball 11, and an engagement step 14 described later is provided.

On the other hand, the mechanical unit (not shown) of the pencil pencil writing body 20 has a writing tip 21 at the tip, and is configured so that the lead case 27 is pulled out by chucking the lead.
The shaft portion is connected so as to be able to shift and is housed in the tube portion 30, and the tube portion 3
An engagement projection 23 is provided on the side surface of the core case 27, the rear end of the core case 27 protrudes from the rear end of the cylindrical portion 30 as appropriate, and an eraser 28 is fitted to the rear end of the core case 27. A knock cover 29 is attached to the outer periphery of the rear end of the cover 27. The mechanical pencil 20 is inserted from the rear end of the barrel 1, and the engaging projection 23 is inserted into the slit 4 of the base 3.
The stepped portion 5 is elastically expanded by the inclined surface 24, and the rear end of the engaging projection 23 abuts on the stepped portion 5, so that the mechanical pencil writing body 20 is prevented from being pulled out of the barrel 1.

By the way, the mechanical pencil 2 is inserted between the front end outer step 26 of the mechanical pencil writing body 20 inserted into the barrel 1 and the internal front step 6 of the barrel 1.
There is provided a coil spring 22 for urging 0 toward the rear.
Also, the rear end of the knock cover 29 of the mechanical pencil writing body 20 is knocked forward so as to be advanced so that the writing tip 21 at the front end of the mechanical pencil writing body 20 projects from the shaft tip opening 2. The engaging projection 23 and the engaging step 14 of the clip ball 11 are locked.

On the other hand, the ball portion 1 is formed by the slit 4 of the shaft cylinder 1.
1, a rib-shaped fulcrum 25 is provided at the front part thereof, and a hole 18 which is slightly larger than a semicircle and is open at the lower side is provided substantially at the center of the side surface. The lock release button 16 provided with the hole elastically fits the hole 18 at the fulcrum 25, and the lock release button 16 is rotatable in a leverage manner on the front surface of the ball portion 11 of the clip 8. When the push portion 19 of the lock release button 16 is pressed inward of the slit 4 from the locked state shown in FIG. 2, the protrusion 17 presses the front surface of the ball portion 11 and pushes up the ball portion 11. The stop state is released, and the mechanical pencil 20 is retracted by the coil spring 22 so that the engaging projection 23 contacts the step 5 formed in the slit 4 of the shaft cylinder 1.
The dimensions are set so that the zero writing tip 21 is immersed inside the barrel. Further, in the above embodiment, the clip 8 formed separately from the base 3 is crimped, but the clip 8 may be formed integrally with the shaft cylinder 1.

[0011]

The operation of the embodiment will be described below.
First, from the state of FIG. 1, the rear end of the knock cover 29 is knocked to advance the pencil pencil writing body 20, and the writing tip 21 projects from the shaft tip opening 2.
3 is an engaging step portion 1 formed in a groove 13 of the clip ball portion 11
6 and is locked, and writing is performed in this state (from FIG. 1 to FIG. 2). When the pressing portion 19 of the lock release button 16 shown in FIG. 3 is pressed from the state where the writing is completed, the protrusion 17 presses the front surface of the ball portion 11 and pushes it up, so that the engagement with the engaging protrusion 23 of the mechanical pencil writing body 20 is performed. The stop state is released, and the mechanical pencil 20 is retracted by the force of the coil spring 22, and the writing tip 21 is immersed inside the barrel and returns to the state shown in FIG. Further, even if the writing instrument is to be fixed to a breast pocket or the like with the writing tip 21 of the pencil pencil writing body 20 protruding from the shaft tip opening 2 as shown in FIG. And the engagement projection 23 of the mechanical pencil 20 is locked, so that the use of the clip is hindered, and the clip is prevented from being fixed to a breast pocket or the like.
Further, when the clip is forcibly fixed to the breast pocket or the like, the engaging state of the engaging step 14 of the clip ball portion 11 and the engaging projection 23 of the mechanical pencil writing body 20 is cancelled. The body 20 is retracted by the force of the coil spring 22, and the writing tip 21 is immersed inside the barrel. Accordingly, it is possible to prevent the clothes from being broken, the core from being broken, the body from being damaged, etc. by fastening to the breast pocket or the like with the writing tip 21 protruding.

[0012]

[Effects of the Invention] The present invention is as described above. To release the engagement between the engagement step of the clip ball and the engagement projection of the mechanical pencil, press the release button on the side of the barrel. It is only necessary to push up the clip ball part by pushing the part, and only the clip ball part operates and the other parts of the clip do not receive any load and the clip mounting base does not slack as in the conventional example , It is also possible to integrally mold other parts of the clip except for the clip ball with the barrel.
Therefore, it is possible to reduce the cost, and it is also possible to solve the problem of quality variation due to the degree of attachment of the clip to the shaft cylinder. Further, since the writing portion can be moved in and out by pressing the knock and the lock release button, it is easy to use and the structure is simple, so that it can be provided at low cost. Furthermore, even if the writing tip is protruded and fixed to a chest pocket or the like, the danger of breaking clothes, breaking the core, or damaging the body can be prevented.

[Brief description of the drawings]

FIG. 1 is a longitudinal perspective cross-sectional view of the present invention, showing a state in which a cursive body is stored in a shaft.

FIG. 2 is a vertical perspective cross-sectional view of the present invention, showing a state in which the writing body is projected from a shaft tip opening;

FIG. 3 shows a state immediately after the locking release button is pressed to press the front surface of the ball portion of the clip, and the ball portion is pushed up to disengage the engaging projection of the mechanical pencil from the engaging step portion of the ball portion. FIG. 2 is a vertical perspective sectional view shown.

FIG. 4 is an exploded perspective view of parts of the knock-type writing instrument of the present invention.

FIG. 5 shows a conventional example, and is a semi-longitudinal sectional view in a state where a writing portion protrudes from a shaft tip opening.

FIG. 6 shows a conventional example, and is a longitudinal sectional view in a state where a writing portion is immersed inside a shaft.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shaft barrel 2 Shaft tip opening 3 Base 4 Slit 5 Step 6 Inner diameter step 7 Inner hole 8 Clip 9 Mounting section 10 Clip plate 11 Ball section 12 Groove section 13 Groove 14 Engaging step section 15 Mounting section 16 Lock release button Reference Signs List 17 projection 18 hole 20 mechanical pencil writing body 21 writing tip 22 coil spring 23 engagement projection 24 inclined surface 25 fulcrum 26 outer surface step 27 core case 28 eraser 29 knock cover 30 cylinder 1 cylinder clip 2 ball unit 3 Joint part 4 ｀ Shaft cylinder 5 ｀ Window hole 6 ｀ Knock body 7 ｀ Engagement part 8 ｀ Refill 9 ｀ Writing part 10 ｀ Shaft tip opening 11 ｀ Press plate part 12 ｀ Spring 13 ｀ Mounting base

Claims (1)

(57) [Scope of request for utility model registration] 1. A ball portion having an engaging step formed on the tip of a clip secured to the rear end base of the barrel, and a mechanical pencil is urged rearward by a coil spring in the barrel. And the engaging projection that engages with the engaging step of the clip ball portion with the writing tip of the mechanical pencil protruding from the shaft tip opening on the mechanical pencil writing tool that interlocks in the axial direction. By disposing an unlocking button having a projection opposite to the front surface of the ball portion so as to leverage along the side surface of the barrel, and by projecting from the rear end of the barrel and knocking it By pushing the rear end of the knock cover formed so that the core is extended, the engaging step of the clip ball portion is moved upward to engage with the engaging protrusion of the mechanical pencil and the writing tip From the shaft tip opening, and release the lock release from that state. When the push portion of the button is pressed in the axial direction, the protrusion moves up again while pressing the front surface of the ball portion to release the above-mentioned locked state, and the mechanical pencil retreats for writing. Part is housed in the shaft, and the engaging projection of the mechanical pencil writing body is movably fitted to the shaft cylinder so that the mechanical pencil writing body does not detach from the shaft cylinder in the slit opened on the side opposite to the clip of the shaft cylinder A step is provided to abut the engaging projection provided on the mechanical pencil, and when the mechanical pencil is inserted from the rear end of the barrel, the engaging projection resiliently expands and fits the step. And a knock-type writing implement characterized in that it is configured to be in a contact state.