JPS6134157Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a broken lead remover for removing a broken lead of a sharpening pencil.

(Prior art and its problems) In the conventional broken lead remover, a small diameter needle, which is slightly smaller than the diameter of the lead, is attached to the rear opening of the lead storage tube located inside the sharp pencil. There are known types that use the elastic force of the needle to fix the closure member to the closure member, and types that press-fit and fix one end of the needle to the closure member.

However, such conventional broken core removers still have the following problems. That is, in the former case, since the elastic force of the needle body is used to perform the fixing, there is considerable variation in the fixing force depending on the strength of the elastic force, and those with weak elastic force are likely to separate, and The problem with strong elasticity is that it is difficult to attach the needle to the closing member, and the latter has a problem of bending when press-fitting because the needle has a very small diameter. It was hot.

(Purpose of the invention) The present invention aims to solve as much as possible the problems remaining in the conventional art described above, and to provide a broken core remover that can easily fasten the needle body and is difficult to remove after fastening. It is something.

(Summary of the invention) The present invention has a small diameter needle having a fastening part formed by bending into a substantially L-shape and a linear engaging part; A mounting part that can be attached to the rear opening of the lead storage cylinder, a longitudinal groove formed on the side wall of the mounting part into which the engagement part of the needle can fit, and a groove of the needle provided in the groove. A closing member having a hole into which the fastening part can be fitted; and a fastening ring which can be fitted into the mounting part of the closing member, and the fastening part of the needle body is inserted into the hole of the closing member and engaged. The gist of the tool is a broken core remover, in which a fastening ring is fitted into the mounting part of the closing member after the part is inserted into the groove part, and the vicinity of the bent part of the needle body is pressed with the inner surface of the fastening ring. This corresponds to the above purpose.

(Example) The present invention will be described in detail below according to an example shown in the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a closing member, which can be attached to a rear opening of a lead storage tube (not shown) disposed in a sharp pencil, and has a flange 3 at its end. a substantially cylindrical mounting part 2 in which the mounting part 2 is arranged in series; a longitudinal groove part 4 formed on the side wall of the mounting part 2 into which an engaging part 8 of a needle body 7 (described later) can fit; and the flange of the groove part 4. It is provided with a hole 5 into which a fixing part 9 of a needle body 7, which will be described later, can be inserted, which is provided at a position close to the part 3. Reference numeral 6 designates an appropriate number of locking protrusions provided on the side wall of the mounting portion 2 at circumferential positions near the collar portion 3. Reference numeral 7 denotes a small diameter needle having a diameter slightly smaller than the diameter of the core. It is provided with a fastening part 9 that can be fitted into the hole 5 formed by being bent. 10 is a fastening ring that can be fitted to the mounting portion 2 of the closing member 1;
When the above-mentioned protrusion 6 is provided, the inner diameter of the fastening ring 10 is made slightly smaller than the diameter of the circle connecting the outer surfaces of the protrusion 6, and the needle body 7 is fitted into the groove 4 and hole 5 of the closing member 1. The inner diameter is such that the needle body 7 is pressed in this state.

Next, the assembly procedure of the above-mentioned embodiment will be explained. The needle body 7 is inserted into the hole 5 of the closure member 1 shown in FIG.
After fitting the fastening part 9 and fitting the engaging part 8 into the groove part 4, the fastening ring 10 is fitted onto the closing member 1. When the protrusion 6 is provided, the inner diameter of the retaining ring 10 is made slightly smaller than the diameter of the circle connecting the protrusions 6, so it comes into contact with the protrusion 6 and increases movement resistance. If the fastening ring 10 is pushed strongly and moved until it comes into contact with the flange 3, the fastening ring 10 is fitted into the closing member 1 by press-fitting with the protrusion 6, and at the same time the fastening ring 10 of the needle body 7 is attached to the fastening part 9. The needle body 7 can be fixed by pressing downwardly near the bent portion (see FIG. 2).

(Effects of the invention) As described above, according to the invention, after fitting the locking part and the engaging part of the needle body into the closing member, the locking ring is attached with a slight force when fixing the needle body. Since it is only necessary to fit the needle into the needle, the needle can be easily secured, and furthermore, detachment of the needle after securing is almost guaranteed as the inner surface of the retaining ring presses the vicinity of the bending part of the needle. can be prevented.

Although the method of fitting the retaining ring 10 into the mounting portion 2 of the closing member 1 by press-fitting has been exemplified, it is also possible to fit the retaining ring 10 by screwing to more reliably prevent detachment. Further, as shown in the drawings, a hole 5' may be provided in the closing member 1 at a position opposite to the hole 5 to ensure the positioning of the fastening portion 9.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view showing each component of the present invention, and FIG. 2 is a vertical sectional view after assembly. 1... Closing member, 2... Mounting part, 4... Groove part,
5... Hole, 7... Needle body, 8... Engaging part, 9... Fastening part, 10... Fastening ring.

Claims (1)

[Scope of utility model registration request] a small-diameter needle body having a fastening part formed by being bent into a substantially L-shape and a linear engagement part;
an attachment part that can be attached to the rear opening of a lead storage tube arranged in a sharp pencil; a longitudinal groove formed in the side wall of the attachment part into which the engagement part of the needle body can fit; and a groove provided in the groove. a closing member having a hole into which the securing part of the needle body can be fitted; and a securing ring which can be fitted into the mounting part of the closing member; After fitting and inserting the engaging part into the groove part, a fastening ring is fitted to the mounting part of the closing member, and the inner surface of the fastening ring presses the vicinity of the bent part of the needle body to remove the broken core. Ingredients.