JPH07290888A - Multipurpose mechanical pencil - Google Patents

Abstract

PURPOSE: To selectively use different kinds of leads by a constitution wherein an annular projection is provided in a hollow cavity room and when a back lid is connected with a barrel, the projection blocks each storing room and an edge of a driver is formed at the terminal end of a push head rod and a part of a handle transfers the lead. CONSTITUTION: An annular projection 22 is provided in a hollow cavity room 20 of a back lid 2 and as the projection 22 blocks several storing rooms after the back lid 2 is connected with a barrel 1, each storing room forms an enclosed storing room to store leads. A push head 3 is constituted of a handle 31 with a large diameter and a rod 32 with a small diameter and the terminal end of the rod 32 is formed into an edge of a plus or minus driver and the rod 32 can be inserted into the inner diameter of an inner pipe 16. A part of the handle 31 is deeply inserted into a hollow cavity room 20 of the back lid 2 and a part of the handle 31 projected from the back lid 2 can be pushed for transferring the lead to be able to push out the lead filled in the inner pipe 16 from a transferring device 11 by moving the inner pipe 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is intended to provide a versatile mechanical pencil. Therefore, this versatile mechanical pencil is constructed so that one side of the body can be connected to the transmission device and the inner tube, and the lid can be covered with a cap. Each storage chamber can be loaded with cores of different thickness and type, and it is combined with the rear lid, and the rear lid is provided with a push head protruding from the rear lid, and the end of the push head is formed with a driver blade. ing. Also, the cap is provided with an extended plate, the side of the plate is provided with a blade for cutting paper, the plate is provided with a hole, and the pipe provided in the cap is fitted with an eraser. A lid that protects the eraser is detachably attached to the.

[0002]

2. Description of the Related Art A conventional mechanical pencil can only load one kind of core of the same thickness on the body, and cores of different thickness must be put in different core cases, or how many The only way to do this is to use a mechanical pencil and load a different density core.

[0003]

The problems described in the prior art have the following problems. As is well known, mechanical pencils are more widely used than fountain pens, ballpoint pens, and brushes. Also, this mechanical pencil is used for drawing, drawing cartoons, drawing, etc., or you can erase it with an eraser and rewrite it newly,
It's really convenient and a feature not found in other pens. However, depending on the use of mechanical pencils, it may be necessary to use ones with different hardness and thickness. The thickness of this core is divided into several grades according to the numbers such as H and B. There is. Therefore, the user must prepare several mechanical pencils and cores with different thickness at the same time, and select an appropriate mechanical pencil depending on the demand of use, or use the internal core. It is really inconvenient because the user has to carry several mechanical pencils and wicks of different thickness at the same time when he goes out because he needs to replace the.

Also, a test method in which a mark sheet method is used to fill a relevant part of an answer with a pencil on a test sheet or the like, and the result is read by a computer for scoring and totaling is prevailing in various places. In this way, it is better to use a dark core for the method of painting the relevant part with a pencil, so ordinary people try to paint it several times in duplicate. In this case, the computer may not be able to read well unless it is properly painted, which may be disadvantageous to the parties.Therefore, the parties have to spend time slowly and well, which can be a real waste of time. There is a nature.

Further, stationery items such as spectacles and drawing tools that are commonly used by ordinary people, and daily life items are fixed with thin screws, but the screws loosen when used many times. Problems are more likely to occur. In such a case, it is necessary to use a thin screwdriver to tighten, but the fact is that ordinary people do not have such a thin driver.

A first object of the present invention is to provide a mechanical pencil which is provided with an accommodation chamber for accommodating several kinds of different cores so that a user can easily select and use the core. The second purpose is that the cap of the mechanical pencil is provided with a hole, and the user can easily fill the answer card using the hole. Thirdly, the mechanical pencil has a fine screwdriver,
The user can conveniently tighten or loosen the thin screw. The fourth purpose is that the mechanical pencil cap can be used to cut letters and cut paper.

[0007]

In order to achieve the above object, the present invention is as follows. The cavity of the body of the mechanical pencil of the present invention is provided with several protruding blades protruding inward, and the flat surface of the tip of the protruding blade comes into contact with the outer wall of the inner pipe of the transmission device. Is composed of several protruding blades, and each of these chambers can be loaded with different core thickness, and users can quickly and easily replace and place them in the transmitter. be able to. In addition, the push head used to push the transmission device has a driver with a small diameter formed on the main body, and the blade of the driver can be positive or negative, so when the push head is taken out, it is quick for the driver. Can change. In addition, the cap is provided with an extended plate, the side of the plate is provided with a blade for cutting a letter seal or paper, and the plate is provided with a hole, and the hole is used. You can fill in the answer card.

[0008]

[Operation] The operation will be described together with the effect.

[0009]

EXAMPLES Examples will be described with reference to the drawings. As shown in FIG. 1, the present invention comprises components such as a body 1, a rear lid 2, a push head 3, and a cap 4. The body 1 shown in FIGS. 1 and 2 is provided with a tube in which a hollow cavity 10 is formed.
One of the bodies is connected to the transmission device 11, and the other is connected to the rear lid 2. This connecting method may use various well-known methods, or, as shown in the figure, one of the female screws 1
2 may be provided to be coupled with the transmission device 11, male threads 13 may be provided to be coupled with the cap 4, and the other may be provided with male threads 14 to be coupled with the rear lid 2.

An annular protruding protrusion 15 is provided on the inner diameter of the body 1, and the protrusion 15 is an inner pipe 16 of the transmission device 11.
The projection 15 and the outer diameter of the inner tube 16 are configured to substantially contact each other, and a plurality of storage chambers are provided in the cavity chamber 10 between the projection 15 and the rear lid 2 by the protruding blades 17. 18
The storage compartments are partitioned so that different or same cores can be loaded in the storage chambers. Then, the loaded cores do not mix with each other due to the limitation of the protruding blades 17 and are conveniently attached to the surface of the body 1 by, for example, "H" 51, "B" 52, "HB". 5
Marking of the type and standard of the core such as 3 can be printed or marked, and the user can quickly replace the core or simply load the core.

In the structure of the rear lid 2 shown in FIG. 1, a hollow cavity 20 is formed in the rear lid 2, and one of the cavity 20 is connected to the body 1, which may be a well-known connecting method. , Or as shown, it is connected to the body 1 with an internal thread 21, and an annular protruding projection 22 is provided in the hollow cavity 20 of the lid 2 thereafter.
After the rear lid 2 is connected to the body 1, the projection 2
Since 2 seals several storage chambers 18, each storage chamber 18 can be formed as a sealed storage chamber to accommodate the wick, and a part of the large diameter handle 31 of the push head 3 is hollow. Can be placed in the cavity chamber 20 of the
Limited by 2.

The push head 3 is composed of a handle 31 having a large diameter and a rod 32 having a small diameter, and the end of the rod 32 is formed by a blade of a plus or minus driver. The rod 32 can be inserted into the inner diameter of the inner tube 16 and the two can be joined in a tight insertion manner or other joining methods to achieve the purpose of the joining. Therefore, a part of the handle 31 is deeply inserted into the hollow cavity 20 of the rear cover 2, and a part of the handle 31 protruding from the rear cover 2 can be pushed for transmission of the core,
The core loaded in the inner pipe 16 can be pushed out from the transmission device 11 by transmitting the inner pipe 16.

The cap 4 is used to protect the body 1, but as shown in the drawing, the male screw 1 of the body 1 is formed by the female screw 41.
Since the cap 4 does not fall off, the cap 4 is provided with an extending plate 42 so that the cap 4 and the body 1 can be combined with each other so that the cap 42 can be inserted into the pocket. There is. The plate 42 is fixed by the protruding point 45, and the plate 42 is made of a transparent material, and the side of the plate 42 is formed as a blade used for cutting paper.

In addition, one or more holes 4 are provided in the center of the plate 42.
4 is provided, and the hole 44 can have various shapes such as a circle, a square, and a rectangle. The area of the bottom of the hole 44 is slightly small, and is the same size as the filled hole of the card read by the conventional computer. Since they have the same shape, the lead of the mechanical pencil can be easily inserted into the hole 44 to fill the relevant portion of the answer sheet. further,
An eraser 47 is fitted on a pipe 46 provided on the cap 4, and a lid 48 for protecting the eraser is detachably attached to the pipe 46.

As shown in FIG. 3, according to the present invention, since the cores of the same or different thickness can be loaded by using the accommodation chamber 18 provided in the body 1, the user can use the cores of different thickness. If desired, as shown in FIG. 4, the cap 4 is removed, and the push head 3 is pushed to transmit the core inside the transmission device 11 to be used outside. Then, when it is desired to replace the core, the rear lid 2 is removed, and a core having an appropriate thickness is taken out from the storage chamber and placed in the inner pipe 16, so that the purpose of quickly and easily replacing the core can be reached.

FIG. 5 shows how the answer card is filled, but the holes 4 provided in the plate 42 of the cap 4 are shown.
In 4, it is possible to easily and quickly fill in the holes 44 by engaging with the filled portions of the answer card. Figure 6
Shows the usage of cutting paper or cutting letters, but it can be used to cut paper using a blade 43 provided on the side of the plate 42 of the cap 4. As shown in FIG. 7, the fuselage 1 can be easily used when not in use.
Since the rear lid 2 and the cap 4 are combined with each other and can be inserted into the pocket by the plate 42 of the cap 4, it is very convenient for carrying.

[0017]

Since the present invention is configured as described above, it has the following effects. 1. Very convenient to carry. 2. The core thickness can be changed quickly and easily according to the usage demands. 3. It is quick and easy to fill when used to fill answer cards. 4. You can cut paper or cut letters. 5. It has blades for tightening and loosening thin screws, and can tighten and loosen thin screws anytime and anywhere.

[Brief description of drawings]

FIG. 1 is an exploded perspective view.

FIG. 2 is a sectional view taken along line AA.

FIG. 3 is a side view of a body.

FIG. 4 is an overall vertical sectional view.

FIG. 5 is a perspective view illustrating a filled state of the answer card.

FIG. 6 is a perspective view illustrating a state when cutting paper.

FIG. 7 is an overall perspective view.

FIG. 8 is a perspective view of a body.

[Explanation of symbols]

 1 Body 2 Rear Lid 3 Push Head 4 Cap 10 Cavity Chamber 11 Transmission Device 12, 21, 41 Female Screw 13, 14 Male Screw 15 Protrusion 16 Inner Tube 17 Protruding Blade 18 Storage Chamber 20 Cavity Chamber 22 Protrusion 31 Handle 32 Rod 42 Plate 43 Blade 44 hole 45 protruding point 46 tube 47 eraser 48 lid

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display location B43K 23/08 21/00 K 6863-2C 29/00 29/02 A B43L 13/20 C

Claims (4)

[Claims] 1. A body, a rear lid, and a push head, wherein the body has a hollow cavity tube, one inner diameter of which is coupled to a transmission device or an inner tube, and an outer diameter of which is coupled to a cap. The other end of the body is connected to the rear lid, and one hollow protrusion is provided in the hollow cavity, and several protrusions are provided in the cavity between the protrusion and the rear lid by a protruding blade. Is divided into
The rear lid is a hollow body with a tube of hollow cavity, one of which can be connected with the body, and the other is inserted with a push head. The hollow cavity is provided with an annular projecting protrusion, and the protrusion is configured to close each accommodating chamber when the rear lid is connected to the body, and the push head is large. Consists of a diameter handle and a small diameter rod, the rod is connected to the inner tube of the fuselage, the blade of the driver is formed at the end of the rod, and a part of the handle protrudes from the back cover and is used for transmission of the core A versatile mechanical pencil characterized by being configured as described below. 2. A body can be capped with a cap, and the cap is provided with an extending plate, which is made of a transparent material and is provided with a hole. The multipurpose mechanical pencil according to claim 1, wherein the side is provided with a blade for cutting paper. 3. The versatile mechanical pencil according to claim 2, wherein an eraser is fitted on a pipe provided on the cap, and a lid for protecting the eraser is detachably attached to the pipe. 4. A multipurpose mechanical pencil according to claim 1, wherein the outer surface of the accommodating chamber for accommodating the core in the body is marked to indicate the density of the core.