JPH04111486U - Notsuku style writing instrument - Google Patents

Abstract

(57) [Summary] [Purpose] A knock-type writing instrument in which the engagement step provided on the clip and the engagement protrusion provided on the writing body are engaged to cause the writing tip to protrude from the shaft tip opening. It is inexpensive and has stable quality, and even if you use the cursive writing as a mechanical pencil and insert it into your breast pocket with the writing tip protruding from the tip of the shaft, it will not tear your clothes, break the lead, or cause injury to your body. shall be taken as a thing. [Structure] An engaging stepped portion 14 is provided on the ball portion 11 of the clip 8 fixed to the barrel 1, and the mechanical pencil writing body 20 is fitted into the barrel 1 so as to be able to move axially. An engaging protrusion 23 is provided so that when knocked, they lock each other and the writing tip 21 protrudes from the shaft tip opening 2, and a lock release button 16 is provided on the front surface of the ball portion 11 and is levered to the shaft tube 1. It is rotatably fixed, and by pressing the lock release button 16, the ball portion 11 is lifted and the locked state is released, and the writing tip portion 21 is housed in the shaft tube 1.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention features a locking step provided on the clip with the writing tip protruding from the shaft tip opening. The part and the engaging protrusion provided on the mechanical pencil writing body are locked and fixed, and the lock is fixed. By releasing it, the mechanical pencil cursive is pushed back by the elastic force of the coil spring. The present invention relates to a knock-type writing instrument configured such that the writing tip is recessed into the shaft.

0002

[Conventional technology]

Insert the writing instrument into your chest pocket with the writing part still protruding from the tip of the shaft. It has been devised to prevent it from sticking and staining your clothes with ink etc. from the writing part. There are writing instruments. As an example, as shown in FIGS. 5 and 6, clip 1' An engaging part 3' is provided on the tip ball part 2' of the shaft cylinder 4' facing the engaging part 3'. A window hole 5' into which the ball part 2' can be inserted is provided on the side surface of the knock body 6', and it also engages with the side surface of the knock body 6'. part 7' is provided, and the knock body 6' is advanced to pivot the tip writing part 9' of the refill 8'. When the engaging part 3' of the clip 1' and the knock body 6' are protruded from the tip opening 10', The engaging part 7' is locked and fixed, and the pressing plate part 11' provided at the rear end of the clip 1' is Conversely, lift the tip of the clip 1' by pushing it down in the direction of the shaft cylinder, and remove the ball part. When the locking state between the engaging part 3' of the knock body 6' and the engaging part 7' of the knock body 6' is released, the lift occurs. The refill 8' and the knock body 6' are pushed back by the spring 12', and the refill 8' There is one in which the writing part 9' is configured to fit inside the shaft. That is, the writing section When the clip 9' protrudes from the shaft tip opening 10', there is a knock with the engaging part 3' of the clip 1'. The engaging part 7' of the body 6' is locked and the clip 1' cannot be used, so the chest pocket Do not forcefully lift the clip 1' and prevent it from attaching to a pocket, etc. When trying to attach the clip 1', the engaging part 3' of the knock body 6' and the engaging part 7' of the knock body 6' are locked. Since the condition will be resolved, the refill 8' will be forced back by the spring 12'. When the writing part 9' is removed, the writing part 9' is immersed inside the space, and the writing part 9' is filled with ink, etc. This prevents clothes from getting soiled.

0003 In addition, a mechanical pencil cursive body can be stored in the shaft barrel so that the shaft can be moved, and the rear end can be knocked. By doing so, the writing tip protrudes from the shaft tip opening, and the knock or the separately provided operating part is inserted. The one that releases the protruding state and stores the writing tip when operated. Are known. However, in the conventional type, the writing tip protrudes from the shaft tip opening. If you insert it in your chest pocket while writing, the writing tip may damage your clothes or the lead may break. There is a risk of it breaking or even causing bodily injury.

0004

[Problem that the idea aims to solve]

By the way, in the conventional writing instrument described above, the engagement part 3' of the clip 1' and the knock In order to release the locked state of the engaging part 7' of the body 6', the pressing plate part 1 at the rear end of the clip 1' 1' in the direction of the shaft cylinder to lift the clip tip ball part 2'. However, in this structure, repeated loads are applied to the mounting base 13' of the clip 1'. acts, so there is a problem that the mounting base 13' is prone to deterioration, so this mounting base 1 3' made of synthetic resin would be unreasonable in terms of strength, so a metal plate, etc., for example, was used. I had no choice. Therefore, it is impossible to integrally mold the clip with the barrel, and The cost increases due to fees and assembly costs, and it is difficult to assemble the clip to the shaft cylinder. There was a problem in that quality varied depending on how it was assembled.

[0005] The purpose of this invention is to solve such problems and to write in mechanical pencil cursive. Even if you insert it into your breast pocket with the tip protruding from the tip of the shaft, it will not tear your clothes. The purpose is to eliminate the risk of the core breaking or causing injury to the body.

[0006]

[Means to solve the problem]

The knock-type writing instrument of the present invention was devised to solve the above-mentioned problems. Attach the ball part with the engagement step to the tip of the clip fixed to the end base, and attach the shell. The pencil cursive is stored in the shaft cylinder with the coil spring biased backwards, and the shaft is The writing tip of the mechanical pencil cursive body moves in the direction from the shaft tip opening. The front of the ball is provided with an engaging protrusion that engages with the engaging stepped part of the clip ball in a protruding state. A lock release button having a protrusion facing the surface is arranged so as to move back and forth as appropriate along the side surface of the shaft cylinder. It is possible to knock the rear end of the mechanical pencil cursive body that protrudes from the rear end of the barrel. , and move the engaging stepped part of the clip ball upwards to write with a mechanical pencil. Make the writing part protrude from the tip of the shaft in a locked state with the engagement protrusion on the body, and then move it above that state. When the lock release button is pressed to the rear of the barrel, the protrusion presses the side of the ball and releases the ball. Move the part upward again to release the above-mentioned locking condition, and the mechanical pencil cursive will move back. Retract and store the writing tip in the shaft, and the engaging protrusion of the mechanical pencil writing body in the shaft barrel. Mechanical pencil writing in the slit facing the clip on the barrel that is movable. In order to prevent the body from separating from the shaft cylinder, a step part is provided that comes into contact with the engaging protrusion, making it sharp. When the pencil writing body is inserted from the rear end of the barrel, the engagement protrusion expands the step and fits into the barrel. This is because they are configured so that they are in an abutting state.

[0007]

【Example】

The embodiment of the present invention shown in FIGS. 1 to 4 is made of resin and has a side surface extending from the rear opening edge. An axial slit 4 is provided up to the required distance forward position, and a slit 4 is provided approximately at the center of the slit 4. A stepped portion 5 having a slope 24 is formed on both side walls forming the slit 4, and the rear end side of the slit 4 is A base 3 is provided protruding from the surface, and a slit 4 is provided in the base 3 so as to communicate with the base 3. Additionally, a mounting groove (not shown) is provided on the inner surface of the base 3, and a U-shaped bend is provided at the rear end. The attachment part 9 of the clip plate 10 having a curved piece and having legs at both lateral ends of the rear end is described above. Insert it into the mounting groove of the base 3 and press it, and attach both lateral ends to the tip of the clip plate 10. A mounting part 15 having legs is inserted into the groove part 12 of the ball part 11 and crimped. Further, a groove 13 is formed in the lower part of the ball portion 11, and an engagement step portion 14, which will be described later, is provided. Ru.

[0008] On the other hand, the mechanical pencil writing body 20 has a writing tip 21 at the tip and a lead case. A mechanical part (not shown) configured to chuck the tip of the 27 and feed it out, and a shaft. They are movably connected and housed in a cylindrical part 30, and the cylindrical part 30 has an engaging protrusion 23 on its side surface. The rear end of the core case 27 appropriately protrudes from the rear end of the cylindrical part 30, and the core case An eraser 28 is fitted to the rear end of the lead case 27, and a nozzle is attached to the outer periphery of the rear end of the lead case 27. A dock cover 29 is attached. Mechanical pencil cursive 20 is behind barrel 1 The engaging protrusion 23 fits into the slit 4 of the base 3 and is inserted from the end. The step portion 5 is elastically expanded by the surface 24, and the rear end of the engagement protrusion 23 comes into contact with the step portion 5. The mechanical pencil writing body 20 is prevented from being removed from the barrel 1.

[0009] By the way, the stepped outer surface of the front end of the mechanical pencil writing body 20 inserted into the barrel 1 26 and the front end inner surface step part 6 of the shaft tube 1, the mechanical pencil writing body 20 is inserted. A coil spring 22 is provided that biases backward. Also, mechanical pencil cursive 20 by knocking the rear end of the knock cover 29 to move it forward and release the mechanical pencil. With the writing tip 21 at the front end of the sill writing body 20 protruding from the shaft tip opening 2, The engagement protrusion 23 of the pencil writing body 20 and the engagement stepped portion 14 of the clip ball portion 11 are engaged with each other. Stop.

0010 On the other hand, in the slit 4 of the shaft tube 1, a rib-shaped fulcrum 25 is provided at the front part of the ball portion 11. There is a hole 18, which is slightly larger than a semicircle and opens downward, approximately in the center of the side surface. is provided, and a lock release button 16 with a protrusion 17 at the rear end and a pusher 19 at the front end serves as a fulcrum. 25 and the hole 18 is elastically fitted to It can be rotated using a face lever. Also, from the locked state shown in Figure 2, the lock release button can be pressed. When the pushing part 19 of 16 is pressed inward of the slit 4, the protrusion 17 presses the front surface of the ball part 11. Since the ball part 11 is pushed up by pressing, it releases the above-mentioned locked state and also releases the mechanical pencil. The cursive writing body 20 moves back due to the coil spring 22, and the engagement protrusion 23 slides into the slit of the barrel 1. Writing with the mechanical pencil cursive 20 while in contact with the stepped portion 5 formed on the pad 4 The dimensions are set so that the tip end portion 21 is recessed into the inside of the shaft cylinder. Furthermore, above In the embodiment described above, the structure is such that a separately formed clip 8 is crimped onto the base 3. However, the clip 8 may be formed integrally with the barrel 1.

[0011]

[Effect]

The operation will be explained below based on the above embodiment. First, from the state shown in Figure 1, knock Knock the rear end of the cover 29 to move the mechanical pencil cursive 20 forward, and When the tip end portion 21 is made to protrude from the shaft tip opening 2, the engagement protrusion 23 engages with the clip ball portion 11. It moves forward and locks the engagement step 16 formed in the groove 13 (from FIG. 1 to FIG. 2). Writing is performed in this state. From the state where writing is completed, the lock release button 16 shown in FIG. 3 is pressed. When the push part 19 is pressed, the protrusion 17 presses the front surface of the ball part 11 and pushes it up. The locking state of the mechanical pencil writing body 20 with the engagement protrusion 23 is released, and the mechanical pencil is released. The pencil writing body 20 is moved backward by the force of the coil spring 22, and the writing tip 21 is inside the shaft cylinder. 1 and return to the state shown in Figure 1. Also, the writing point of mechanical pencil cursive 20 Insert the writing instrument into your chest pocket with the end 21 still protruding from the shaft tip opening 2 as shown in Figure 2. Even if you try to attach it to a mechanical pencil, the engagement stepped portion 14 of the clip ball portion 11 and the mechanical pencil Since the engaging protrusion 23 of the writing body 20 is locked, the use of the clip is hindered and the clip is not placed in the chest pocket. This prevents the product from sticking to objects, etc. Also, if it is forcibly attached to a breast pocket etc., please click Locking of the engagement step portion 14 of the drop ball portion 11 and the engagement protrusion 23 of the mechanical pencil writing body 20 Since the condition has been resolved, the mechanical pencil cursive 20 has to be replaced with a coil bar. The writing tip 21 is retracted by the force of the spring 22, and the writing tip 21 is recessed into the barrel. Therefore, it can be attached to a chest pocket or the like with the writing tip 21 protruding from the clothes. This prevents things like tearing, breaking the core, or causing injury to the body.

0012

[Effect of the idea]

The present invention is as described above, and the engaging step part of the clip ball part and the mechanical pencil writing To release the locked state of the engagement protrusion on the body, press the push part of the lock release button on the side of the shaft cylinder. Simply push up the clip bead, and only the clip bead will operate and the clip will click. Other parts of the clip do not receive any load, and the clip mounting base is Since it will not buckle, the other parts of the clip except the clip ball can be kept together with the barrel. It is also possible to perform body molding, thereby reducing costs. This has the effect of eliminating the problem of quality variations due to the way the pipe is attached to the shaft cylinder. Ru. In addition, the writing part can be moved in and out by knocking and pressing the lock release button, making it easier to use. It has a simple structure and can be provided at low cost. Furthermore, the writing tip was made to protrude. Even if it is stuck in a chest pocket, etc., it may tear clothes, break the core, or cause injury to the body. It is possible to prevent such dangers.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of the present invention, showing a state in which a writing body is housed within the 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 the tip end opening of the shaft.

[Figure 3] Press the lock release button to press the front surface of the bead of the clip, push up the bead, and release the engagement protrusion of the mechanical pencil writing body from the engagement step of the bead. FIG.

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

FIG. 5 shows a conventional example, and is a half-longitudinal cross-sectional view with the writing part protruding from the shaft tip opening.

FIG. 6 shows a conventional example, and is a vertical cross-sectional view with the writing part recessed inside the shaft.

[Explanation of symbols] 1 Shaft tube 2 Shaft tip opening 3 Base 4 slit 5 Stepped section 6 Inner diameter step part 7 Inner hole 8 Clip 9 Mounting part 10 Clip plate 11 Tamabe 12 Groove 13 Groove 14 Engagement stepped portion 15 Mounting part 16 Lock release button 17 Protrusion 18 holes 20 mechanical pencil cursive 21 Writing tip 22 Coil spring 23 Engagement protrusion 24 Slope 25 Fulcrum 26 External stepped part 27 Core case 28 Eraser 29 Knock cover 30 Cylinder part 1｜Clip 2' Tamabe 3' Engagement part 4' Shaft tube 5｜ Window hole 6｀ Knock body 7' Engagement part 8｜ Refill 9｜Writing section 10' Shaft tip opening 11' Pressing plate part 12' Spring 13' Mounting base

Claims (1)

[Scope of utility model registration request] Claim 1: A ball portion having an engagement step is fixed to the tip of a clip fixed to the base of the rear end of the barrel, and the writing body of the mechanical pencil is urged backward by a coil spring inside the barrel. The mechanical pencil cursive body is stored in the mechanical pencil cursive body and is interlocked with the mechanical pencil cursive body in the axial direction. A lock release button having a protrusion opposite to the front surface of the ball part is arranged so as to move along the side surface of the shaft cylinder, and the button protrudes from the rear end of the shaft cylinder and knocks. By pressing the rear end of the knock cover, which is designed to feed out the lead, the knock cover is moved forward, and the engaging step part of the clip ball part is moved upward to engage the engaging protrusion of the mechanical pencil writing body, and the writing tip part is brought into a locked state. protrudes from the shaft tip opening, and from that state, when the push part of the lock release release button is pressed inward of the shaft, the protrusion presses the front surface of the ball part and moves the ball part upward again, causing the above-mentioned When the locking state is released, the mechanical pencil writing body retreats and the writing part is housed in the shaft, and the side facing the clip of the barrel barrel into which the engagement protrusion of the mechanical pencil writing body is movably fitted. In order to prevent the mechanical pencil writing body from separating from the barrel, the slit is provided with a step that comes into contact with an engaging protrusion provided on the mechanical pencil writing body, so that when the mechanical pencil writing body is inserted from the rear end of the barrel. A knock-type writing instrument characterized in that the engaging protrusion elastically expands and fits into the stepped portion to be in an abutting state.