JP3005105U - Mechanical pencil that can be loaded with various types of lead - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of the present invention is to provide a mechanical pencil that is convenient to carry, has a quick and easy replacement of the lead, and is applicable even when you want to use a screwdriver with a small diameter. To do. [Structure] The body of the mechanical pencil is provided with several accommodating chambers into which different types of cores can be loaded, and the push head for pushing out the cores is formed on the blade of the driver.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention seeks to provide a mechanical pencil capable of loading various types of cores. Therefore, the mechanical pencil itself has several storage chambers, each of which can have a different density and type of core. The mechanical pencil can be used quickly and easily depending on the usage demand. In addition, the push head that pushes out the core is formed on the blade of the driver, and a small screw can be tightened and loosened.

[0002]

[Prior art]

 Conventionally, this kind of thing is as follows. Conventional mechanical pencils can only be loaded with one core of the same thickness in the fuselage, cores of different thickness must be put in different core cases, or they have several mechanical pencils. The only way is to load and use a core of different strength.

[0003]

[Problems to be solved by the device]

 Traditional mechanical pencils require the use of different shades of pencil when drawing, drawing cartoons, writing, etc., which requires the user to use several mechanical pencils or several cases. It is necessary to prepare and place the cores with different thickness at the same time. Therefore, when the user uses it outdoors, if he or she does not carry several mechanical pencils or several cases of differently thick cores at the same time, it will be a great inconvenience. In addition, the screws used in drafting tools and glasses are small, so a screwdriver with a special diameter must be used when tightening or loosening the screw, and drivers with such a small diameter are not widely used. In addition, since no ordinary person has the habit of carrying it from time to time, if you want to use the thin screwdriver in a hurry, you must feel regret without the tool.

An object of the present invention is to provide a mechanical pencil different from the conventional one, and the mechanical body of the mechanical pencil is provided with several accommodating chambers, in which different density cores can be loaded. Mechanical pencils can be quickly and easily replaced at any time and at any time. In addition, the next purpose is to provide a mechanical pencil different from the conventional one, to use a push head used in a lead transmission device, and to install a plus or minus screw blade at the tip of the push head. It has the function of a thin screwdriver.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is as follows. In the cavity of the body of the mechanical pencil of the present invention, there are 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 tube of the transmission device. There are several storage chambers between the blades, and different thickness cores can be inserted into the chambers, and the user can quickly and easily replace them by operating the push head according to the usage demand. be able to. In addition, the push head used to push the transmission device is formed with a driver with a small diameter in its body, and the blade of the driver can be positive or negative, so that when the push head is taken out, it becomes a driver. You can change quickly.

[0006]

[Action]

 The operation will be described together with the effect.

[0007]

【Example】

 Examples will be described with reference to the drawings. As shown in FIG. 1, the present invention comprises a body 1, a rear lid 2, a push head 3, a transmission device 4, and the like.

The body 1 shown in FIGS. 2 and 3 is provided with a hollow cavity chamber having a long tubular shape in the body 1, an internal thread 11 and an external thread 12 are provided at one end, and an external thread is provided at the other end. 13 are provided, the female screw 11 is coupled with the screw 41 of the transmission device 4, and the male screw 12 is coupled with the writing tip 43. Therefore, the transmission device 4 and the inner tube 42 are housed in the cavity of the body 1, the male screw 13 is coupled to the rear lid 2, and the protrusion 14 of the ring is provided in the cavity of the body 1. Several projecting blades 15 are provided between the end of the male screw 13 and the cavity, and the tips of the projecting blades 15 are formed so as to substantially contact the outer wall of the inner tube 42 of the transmission device 4. Therefore, several projecting blades 15, the outer wall of the inner tube 42, and the inner wall of the body 1 are divided into several housing chambers 16. The accommodating chambers 16 may be provided with cores of different or the same thickness, and if necessary, such as "H" 17, "B" 18, and "HB" 19 may be provided on the surface of the body 1. Can be marked with or marked with the nominal standard of the core to indicate the thickness or type of core.

As shown in FIG. 1, the rear lid is also provided with a hollow cavity chamber 21, and a female screw 22 is provided at one end of the cavity chamber 21 so that it can be coupled with the male screw 13 of the body 1. The other end of 21 is configured so that a part of the handle 31 having a slightly larger diameter of the push head 3 can be inserted therein. An annular projecting projection 23 is provided in the cavity chamber 21, the projection 23 can pass through the inner tube 42 of the transmission device 4, and the handle 31 of the push head 3 is pushed to deeply go inside. At this time, the handle 31 having a large diameter of the push head 3 comes into contact with the projection 23, and the push head 3 is formed so as to enter deep into a certain position and stop.

The push head 3 is like a driver, and is composed of a large-diameter handle 31 and a small-diameter rod 32. A part of the handle 31 is put into the cavity 21 and a part of one of them is projected from the rear lid 2. So that the rod 32 can be tightly inserted into the inner tube 42 of the transmission device 4, and a screwdriver blade 33 is formed at the end of the rod 32, and the shape of the blade 33 can be positive or negative. You can

The transmission device 4 has a well-known structure, and will not be described in detail or shown in the drawings in the present invention. Briefly, the transmission device 4 is coupled with the female screw 11 of the body 1 by a screw 41, and the inner pipe 42 The rod 32 of the push head 3 can be inserted into the end of the inner tube 42, and the end of the inner tube 42 can be inserted tightly, and the transmission device 4 is protected by the brush tip 43, and the brush tip 43 can be used. Since the female screw is provided in 43 and is coupled with the male screw 12 of the body 1, the transmission device 4 does not fall off.

As shown in FIG. 4, when the transmission device 4 is coupled to the body 1, the outer wall of the inner tube 42 is formed so as to be substantially in contact with the protruding tip of the protruding blade 15 of the body 1. . For this purpose, several housing chambers 16 can be formed between several projecting blades 15, and the plurality of housing chambers 16 can be loaded with cores 5 of different or the same density. Since the loaded core 5 is limited by the protrusion 23 of the rear lid 2, there is no problem of the core coming off. When it is necessary to replace the core, loosen the screw from the rear lid 2 and take out the core quickly and easily. The purpose of exchanging can be achieved. Also, the push head 3 can be used not only to hold down the inner tube 42, but also to take out the core or to be used as a driver.

FIG. 5 is an external view of the present invention. The mechanical pencil shown in FIG. 5 may be provided with a cap or a clip for convenience of carrying, depending on the usage demand. .

[0014]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. The mechanical pencil of the present invention is convenient to carry, the core can be replaced quickly and easily at any time and place, and when you want to use a screwdriver with a small diameter, immediately remove the push head and screw a small screw. The effect of tightening and loosening can be reached.

[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 a partial cross-sectional view when combined.

FIG. 5 is an external view when combined.

FIG. 6 is a perspective view of a body.

[Explanation of symbols]

 1 Body 2 Rear Lid 3 Push Head 4 Transmission Device 5 Core 11,22 Female Screw 12,13 Male Screw 14,23 Protrusion 15 Protruding Blade 16 Storage Chamber 21 Cavity Chamber 31 Handle 32 Rod 33 Blade 41 Screw 42 Inner Tube 43 Writing Point

Claims (2)

[Scope of utility model registration request] 1. A body having a hollow cavity has one end coupled to a transmission device or a writing tip, the other end coupled to a rear lid, and an annular protrusion for supporting an inner tube in the hollow cavity. One protrusion is provided, and several protruding blades are provided in the cavity chamber, and the tip of the protruding blade comes into almost contact with the outer wall of the inner tube, so that between the several protruding blades. It is configured to form a core by forming a plurality of storage chambers, one end of the storage chamber is configured to contact with a protrusion of the body to form a closed wall, and the other end is configured to be closed by a protrusion of the rear lid, After that, a hollow cavity chamber is provided in the lid, an annular protrusion is provided in the cavity chamber, a female screw is provided at one end of the cavity chamber to connect with the body, and the other end provides a push head handle, The push head consists of a handle with a large diameter and a rod with a small diameter. When it is inserted tightly into the inner tube, a part of the handle projects from the back cover, and one part is configured to be inserted into the cavity of the back cover. mechanical pencil. 2. A sharpness capable of loading various types of cores as set forth in claim 1, wherein a mark is provided on the end face of the accommodation chamber provided in the body to indicate the type of cores loaded. Pencil.