JPH04135387U - Appearance device in the writing section - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to provide a writing part retractable device for a writing instrument that has a simple configuration and reduces the number of parts and manufacturing steps. [Structure] A groove having two widths, wide and narrow, is provided in the barrel, the clip and the holding member are integrated, and two locking protrusions are provided on the sides of the clip shaft, so that the clip shaft can be fixed as described above. As the writing part is slid in the groove, one of the two stages of locking protrusions can be freely engaged with a locking part provided on the side of the groove, so that the writing part can be moved in and out.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to an improvement of a retractable device for a writing part of a writing instrument such as a ballpoint pen.

0002

[Conventional technology]

Traditionally, writing instruments such as ballpoint pens have a knock button separate from the clip. However, some devices are configured so that the writing section can be accessed via the above-mentioned knock button. It is also pushed out by the clip, and when the writing part is recessed, the engagement between the clip and the locking part is Some items uncoupled and return to the storage position due to the action of a spring.

0003

[Problem that the idea aims to solve]

However, in the above-mentioned conventional device for retracting the writing part, a note is added in addition to the clip. It is necessary to configure a lock button, and it is also necessary to provide a locking part separate from the clip. This requires an additional number of parts and manufacturing steps to make up the writing instrument itself. The drawback was that it was difficult to achieve a sufficiently low price.

0004 Therefore, this idea is to improve the drawbacks of the conventional ones mentioned above, and is a clean In addition to serving as a knock button and a knock button, a locking part can be formed between the clip and the barrel. Although efforts are being made to further reduce the cost by reducing the number of parts and processes, It is.

[0005]

[Means to solve the problem]

To this end, we installed a groove in the rear end of the shaft cylinder that widens toward the front from an appropriate position. At the same time, the clip shaft that supports the clip is inserted into the narrow part of this groove. Then, insert and insert an elastic writing part holder that slides inside the shaft cylinder integrally with this clip shaft. , the above-mentioned holding body forms two locking protrusions parallel to each other in the axial direction on the side part of the clip shaft, and these A locking portion that engages with the locking projections is provided on the side of the narrow part of the groove on the inner wall of the shaft cylinder, Furthermore, instead of a locking part, the holding body is given elasticity to open outward by a leaf spring. be.

[0006]

[Effect]

With the above configuration, when the clip is slid forward relative to the barrel, the clip The writing instrument holder, which is integrated with the pen shaft, advances inside the barrel and holds the writing instrument against the spring inside the barrel. The marking part is made to protrude from the tip of the shaft cylinder, and at the same time, the locking protrusion at the front of the holder is attached to the inner wall of the shaft cylinder. The rear locking protrusion is locked on the front end of the locking part and protrudes into the writing part. When you finish writing, press the clip to maintain the engaged state due to the elasticity of the holder. Undo this, move the writing part backward until the front protrusion engages with the locking part, and insert the writing part into the barrel. It works to house the monster, and its simple structure allows it to appear and appear in a specified manner. be. Also, when giving elasticity to the holder using a leaf spring, the locking protrusion on the holder is Since it can be easily engaged with the groove of the barrel, there is no need to provide a locking part on the inner wall of the barrel.

[0007]

【Example】

This invention will be further explained with reference to embodiments shown in the drawings. (1) is based on this idea. It is a marking tool, and (2) is a shaft cylinder, and a groove (3) is provided in the axial direction from the rear end. ing. This groove (3) has a narrow part (4) on the rear end side of the shaft cylinder (2), and a narrow part (4) on the rear end side of the shaft cylinder (2), and It has a wide portion (5) on each side, and further has a narrow portion (4) approximately at the center thereof. The locking portion (2) is inclined toward the inner rear of the shaft cylinder (2) with the width of the wide portion (5). 6), the front end of which constitutes a locking edge. (7) is a clip, (8) is the clip shaft that supports the clip (7), and the narrow part (4) of the shaft tube (2) Fit and slide. (9) is a holder for the writing part, which has a V-shape that opens on the rear end side. A mold cutout (10) is formed, and the cutout (10) provides elasticity to the holding body (9). is given. This part may be given elasticity by a leaf spring (11) if necessary. . This leaf spring (11) gives outward elasticity to the holder (9), so this In this case, the groove (3) of the shaft cylinder (2) does not need to be provided with the locking part (6) on the inner wall of the shaft cylinder (2). The locking protrusion of the holder (9) can be locked to the holding body (9). At the rear end of the resection part (10) The lid (12) is integrally constructed. On the other hand, the other side of the cutout part (10) is a clip shaft. (8), and a rear locking protrusion (13) in the lateral direction of the clip shaft (8). and a front locking projection (14). Both are tilted toward the front. Especially, the slope on the front side of the rear locking protrusion (13) corresponds to the slope of the locking part (6). It has a slope. In addition, the front locking protrusion (14) is larger than the rear locking protrusion (13). The height of the protrusion is high and the protrusion has a substantially trapezoidal shape. (15) is the writing section, (16) is a spring, and (17) is a spring provided at an appropriate position of the writing part (15). This is a locking protrusion.

[0008] In this way, press and fit the clip (7) into the groove (3), The spring (16) and the holder (9) are pressed, and the front locking protrusion (14) is pushed into the groove (3). ) is engaged with the rear end of the wide portion (5), that is, the front edge of the locking portion (6). At this time, the brush When the lid body (12) integrated with the record holder (9) covers the rearmost end of the shaft cylinder (2), In both cases, the inclined surface of the rear locking protrusion (13) is located inside the narrow portion (4) of the groove (3). It comes into contact with the locking part (6) provided in the. In this way, the writing part (15) is placed inside the barrel (2). It will be in a contained state. Then, push the clip (7) further toward the front of the barrel (2). When pressed, the contact surface slides and the rear locking protrusion (13) engages the wide part of the groove (3). (5) Engage with the rear end. That is, the writing part holder (9) is separated by the above operation. The barrel (2) moves forward by a distance (g), and the writing part (15) protrudes from the barrel (2). , becomes available for use. Next, place the clip (7) near the clip axis (8). When pressed toward the shaft cylinder (2), the rear locking protrusion (13) and the wide part (5) of the groove (3) The rear end, that is, the engagement with the front edge of the locking part (6) is released, and the spring (16) Due to the repulsive force, the holder (9) is pressed toward the rear end of the shaft cylinder (2) and moves Ru. However, the rear locking protrusion ( 13) comes close to the surface of the shaft cylinder (2) along the locking part (6), the rear locking protrusion The front locking protrusion (14), which is higher than the protrusion (13), is connected to the front edge of the locking part (6). When engaged, the backward movement of the holding body (9) is stopped and fixed.

[0009]

[Effect of the idea]

Since it is configured as described above, it is possible to reduce the number of necessary parts for the writing part's appearance and retrieval device. Moreover, since it has a simple configuration, the number of manufacturing steps can be significantly reduced. , which has the excellent effect of promoting lower prices of writing implements.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of a writing instrument having a writing part retracting device according to the present invention.

FIG. 2 is a plan view of a groove portion of the shaft cylinder.

FIG. 3 is an exploded perspective view of the clip, holder, and barrel.

FIG. 4 is a sectional view of the clip and the holding portion taken along the line A--I in FIG. 1;

[Explanation of symbols]

1 Writing implements 2 Shaft cylinder 3 groove 4 Narrow part 5 Wide part 6 Locking part 7 Clip 8 Clip axis 9 Holder of writing part 10 Excision part 11 Leaf spring 12 Lid body 13 Rear locking protrusion 14 Front locking protrusion 15 Writing section 16 Spring 17 Spring locking protrusion

Claims (2)

[Scope of utility model registration request] Claim 1: A writing instrument in which the writing part is moved in and out by movement of the clip in the axial direction of the barrel, in which a groove is provided in the rear end of the barrel in the axial direction, the width of which is widened toward the front from an appropriate position; A clip shaft is inserted into the narrow width part, and a holder having an elastic body that slides on the shaft cylinder integrally with the clip shaft is fitted, and the holder has two locks parallel to each other in the axial direction on the sides of the clip shaft. A device for projecting and retracting a writing part, which has projections and a locking portion that engages with these locking projections is provided on the side of the narrow portion of the groove on the inner wall of the shaft cylinder. 2. The device for extending and retracting a writing part according to claim 1, wherein a leaf spring is housed in a cutout of the holding body in place of the locking part on the inner wall of the shaft cylinder that engages with the locking projection.