JPH0516387U - Sharp pencil - Google Patents

Abstract

(57) [Summary] [Purpose] The eraser attached to the mechanical pencil is easy to use and has a long service life, the function of the mechanical pencil is improved, and this is realized by a simple structure. [Structure] In the core tube (3) of the knock type mechanical pencil,
It is characterized by being equipped with a feed-out type eraser (4).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a knock-type mechanical pencil with an eraser attached to the top.

[0002]

[Prior Art]

 Many mechanical pencils have an eraser attached, but most of them have a small eraser fixed and attached. Even if they are removable, if you use only half of a centimeter, Erasers attached to common mechanical pencils were of little value because they were difficult to remove. In addition, the mechanical pencil has a longer total length than the length of the core, and a means for utilizing the cavity formed in the upper part has been considered for some time. Therefore, as disclosed in Japanese Utility Model Publication No. 62-27438, there has been known a method in which an eraser longer than before is put in and out by rotation using a spiral guide, but there is a drawback that the structure becomes complicated. It was

[0003]

[Problems to be solved by the device]

 The present invention utilizes a cavity at the top of a knock type mechanical pencil to attach an eraser that sticks out here and allows the length to be adjusted freely, making it easier to use the eraser and extending the life of the mechanical pencil. The purpose of this is to improve the function of and to realize this with a simple structure.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention has a knock-out mechanical pencil equipped with a feed-out eraser on the upper portion thereof. The feed-out type eraser (4) is connected to the core tube (3) by the core tube connection part (5). The present invention is a mechanical pencil having the above configuration.

[0005]

[Action]

 When the lead (11) is taken out, by knocking the head of the feed-out eraser (4), the core tube (3) connected to the feed-out eraser (4) is pushed, and the lead (11) ) Is sent to the front. When the lead (11) is replenished, the feed-out eraser (4) is removed to expose the core tube (3) so that the lead (11) can be replenished. By moving the knob (7) of the feeding type eraser (4), the desired amount of eraser (8) can be projected or stored.

[0006]

【Example】

 An embodiment of the present invention shown in FIG. 1 will be described. The feed-out type eraser (4) is connected by a core tube (3) and a core tube connecting portion (5) provided below the core tube. An embodiment of the present invention shown in FIG. 2 will be described. The feed-out type eraser (4) is connected by a core tube (3) and a core tube connecting portion (5) provided below the core tube, and the main body (1) having a vertical groove (6) is connected to the core tube (3) and The feed-out type eraser (4) is covered from the outside, and the knob (7) of the feed-out type eraser (4) is passed through the vertical groove (6) to be connected to the tip (2). When the body (1) having the vertical groove (6) is connected to the tip portion (2), the head of the feed-out type eraser (4) protrudes from the upper end of the body (1) by the knock stroke or more. An embodiment of the present invention shown in FIG. 3 will be described. The main body (1) having the vertical groove (6) of the embodiment shown in FIG. 2 is divided into a main body lower portion (13) and a main body upper portion (14) and connected by a main body connecting portion (15). FIG. 4 shows the embodiment shown in FIG. 3 provided with a clip (12) for fastening to a pocket or the like. The connecting means of the connecting portion may be not only the elastic force between the members but also a screw, an uneven surface, or the like. In FIGS. 3 and 4, the main body upper portion (14) and the main body lower portion (13) are connected by the main body connecting portion (15) to the inner surface of the lower body, but this may be the outer surface. Although the core tube lid (9) and the core cleaning pin (10) are shown in FIG. 2, these may be omitted. The present invention has the above-described structure. When the lead (11) is to be taken out, the head of the feed-out eraser (4) is knocked to connect to the feed-out eraser (4). Is pushed and the lead (11) is sent forward. When the wick (11) is replenished, the embodiment shown in FIG. 1 is a feed-out eraser (4), and the embodiment shown in FIG. 2 is a body (1) having a vertical groove (6) and a feed-out eraser (4). In the embodiment shown in FIG. 3, the core tube (3) is exposed and the core can be replenished by removing the upper part (14) of the main body and the retractable eraser (4). By moving the knob (7) of the feeding type eraser (4), the desired amount of eraser (8) can be projected or stored.

[0007]

[Effect of the device]

 The eraser attached to the mechanical pencil is easy to use and has a long life, improving the function of the mechanical pencil, and this can be achieved by a simple structure.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

FIG. 2 is a vertical sectional view showing an embodiment of claim 2;

FIG. 3 is a vertical sectional view showing an embodiment of claim 3;

FIG. 4 is a perspective view showing an embodiment of claim 3;

[Explanation of symbols]

 1 main body 2 tip part 3 core pipe 4 feeding type eraser 5 core pipe connecting part 6 vertical groove 7 knob 8 eraser 9 core pipe lid 10 core cleaning pin 11 core 12 clip 13 main body lower part 14 main body upper part 15 main body connecting part

Claims (3)

[Scope of utility model registration request] 1. A mechanical pencil in which a feed-out type eraser (4) is connected to a core tube (3) by a core tube connecting portion (5). 2. The sharp as claimed in claim 1, wherein the main body (1) having the vertical groove (6) is covered with the core tube (3) and the feed-out eraser (4) from the outside and connected to the tip portion (2). Pencil. 3. A body (1) having a vertical groove (6) is divided into a body lower part (13) and a body upper part (14), and a body connecting part (1).
The mechanical pencil according to claim 2, wherein the mechanical pencil is connected according to 5).