CN107933146A - Propelling pencil with automatic pencil lead feeding - Google Patents

Abstract

The invention discloses a mechanical pencil for automatically feeding pen lead, which comprises an inner cylinder and a pen core supported in the inner cylinder, the pen core includes a lower working area and an upper bearing area, and the bearing area of the pen core There is a slot on the side of the bearing area for feeding the pen and lead in the pen and lead placement area to fall into the bearing area. The bottom of the inner cylinder is set as a spiral inclined baffle, and the bottom of the spiral inclined baffle is extends to the bottom of the groove on the bearing area side, and the spiral slanted baffle is inclined from the edge of the inner cylinder to the direction of the refill. This product changes the structure of a common mechanical pencil, from a pen holder in the prior art to a composite structure of the inner barrel and the pen core in the present invention, and communicates with the inner barrel through the side slot of the bearing area on the side of the pen core, and the inner barrel The bottom of the pen is set as a spiral slanted baffle to prevent the free fall of the pen lead and guide the movement of the pen lead, so that the pen lead placed in the pen lead placement area automatically falls into the pen core.

Description

A mechanical pencil that automatically feeds the pen lead

technical field

The invention relates to a mechanical pencil for automatically feeding lead, belonging to the technical field of office supplies.

Background technique

At present, the commonly used mechanical pencil can only hold one lead when in use, and the lead needs to be replaced after use, which affects the learning efficiency. In addition, the quality of pencils on the market varies. Most users of mechanical pencils are primary and middle school students. They often touch pencils and pencils. The powder of pencils and pencils will stick to their hands. If they are not cleaned or wiped off in time, they will affect their health. This product is designed for students or office workers who use a mechanical pencil to write a lot, and it is inconvenient and unsafe to change the lead. A mechanical pencil that does not need to be manually changed frequently.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a mechanical pencil that automatically feeds pencil leads, which can simultaneously accommodate multiple pencil leads and automatically feed the pencil leads into the working position.

In order to solve the above-mentioned technical problems, the technical solution of the present invention is: a mechanical pencil for automatically feeding pen lead, including an inner cylinder, and a pen core supported in the inner cylinder, and the area between the pen core and the inner cylinder is a pen Lead placement area, the pen core includes a lower working area and an upper bearing area, the working area is close to the nib, the bearing area is close to the tail of the pen, and the bearing area of the pen core is provided with a pen lead placement area. The pen lead in the inner tube is fed into the slot on the side of the loading area, and the bottom of the inner cylinder is set as a spiral slanted baffle, and the bottom of the spiral slanted baffle extends to the slot on the side of the loading area. The bottom, and the spiral slanted baffle is inclined from the edge of the inner tube to the direction of the refill.

Further, the connection between the working area and the carrying area of the pen core is a circular arc transition connection structure, so that the pen lead can slide into the working area automatically after entering the groove from the side of the carrying area.

Further, the bearing area of the pen core is a cylinder whose diameter is 1.5 times the diameter of a pencil lead, the side slot of the bearing area is located on the side wall of the cylinder, and the width of the slot on the side of the bearing area is also one 1.5 times the diameter of a pencil lead.

Further, the working area of the pen core is connected with a pen lead retractable device.

Further, a pressure head for pressing the pen core is installed at the tail end of the pen core so that the pen lead is continuously sent out.

Further, the carrying area of the refill extends upwards from the working area of the refill to the end of the pen.

Further, the mechanical pencil also includes an outer cylinder, the inner cylinder is supported in the outer cylinder, the diameter of the outer cylinder is 8-15mm, and the diameter of the inner cylinder is 6-9mm.

Further, a rotatable and detachable screw cap is installed at the tail of the inner cylinder.

Furthermore, both the outer cylinder and the inner cylinder are made of transparent plastic materials by extrusion or blow molding plastic molding process.

After adopting above-mentioned technical scheme, the present invention has following beneficial effect:

1) In the present invention, a refill is added inside the inner cylinder, which communicates with the inner cylinder through a slot on the side of the bearing area on the side of the refill, and the bottom of the inner cylinder is set as a spiral slanted baffle to prevent the pen lead from falling freely. It acts as a guide for the movement of the pen lead, so that the pen lead placed in the pen lead placement area automatically falls into the pen core, and the effect of automatic feeding of the pen lead is obtained when the pen lead in the pen core is used up, and the inner cylinder has The function of storing a certain amount of pencil lead can save time, improve efficiency, and reduce damage to health; this product meets the requirements of students using mechanical pencils in class, saves the time for lead replacement, improves learning and office efficiency, and greatly reduces less harm to the body;

2) The bottom of the inner cylinder of the present invention is set as a spiral slanted baffle, so that each time the lead in the pen core is used up, the pen lead on the spiral slanted baffle will start to automatically feed the pen core, Since the spiral slanted baffle is spirally slanted, the height of the bottom end of each pen lead is different, and it is fed to the refill successively from the bottom of the baffle from low to high;

3) The working area of the refill and the carrying area are connected by a circular arc transition, so that the lead can pass through the slot on the side of the carrying area of the carrying area, making it easier for the lead to enter the center of the refill, which is conducive to the movement of the lead roll out;

4) The diameter of the bearing area of the pen core of the present invention is about 1.5 times of the diameter of a pen lead, and the side groove of the bearing area on the side wall of the pen core bearing area is a width of pen from top to bottom. The through groove with 1.5 times the diameter of the lead allows only one lead to pass through at a time, avoiding the risk of parallel falling of the lead when feeding;

5) Remove the screw tail cap at the end of the pen by rotating it, and put a large amount of pen lead at one time into the pen lead storage area between the pen core and the inner barrel to realize automatic feeding in the future.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the partial structure schematic diagram of the junction of the working area and the bearing area of the pen core of the present invention;

Fig. 3 is a structural schematic diagram of the pen cores of the present invention sequentially entering the carrying area.

Detailed ways

In order to make the content of the present invention more clearly understood, the present invention will be further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

As shown in Figures 1 to 3, a mechanical pencil for automatically feeding pen lead includes an inner cylinder 2, and a pen core 3 supported in the inner cylinder 2, and the area between the pen core 3 and the inner cylinder 2 is Pen lead placement area 4, the pen refill 3 includes a lower working area 3-1 and an upper bearing area 3-2, the working area 3-1 is close to the nib, and the bearing area 3-2 is close to the tail of the pen, so The loading area 3-2 of the refill 3 is provided with a slot 3-3 on the side of the loading area for feeding the pen lead in the pen lead placement area 4 into the loading area 3-2, and the bottom of the inner cylinder 2 It is set as a spiral slanted baffle 5 , the lowest point of the spiral slanted baffle 5 extends to the bottom of the slot 3 - 3 on the bearing area side, and the spiral slanted baffle 5 extends from the inner cylinder 2 The edge is inclined to the pen core 3 direction. After the pen lead 7 in the pen core 3 is used up every time, the pen lead 7 on the helical inclined baffle plate 5 will start to feed the pen core 3 automatically. The height of every pen lead 7 bottoms is all different, and as shown in the figure, the pen lead 7 on the spiral slant baffle plate 5 feeds into the pen core 3 successively from low to high.

This product changes the structure of a common mechanical pencil, from a pen holder in the prior art to a composite structure of the inner barrel and the pen core in the present invention, through the side slot 3-3 on the side of the bearing area of the pen core and the inner tube 2 Connected, the bottom of the inner tube 2 is set as a spiral slanted baffle 5 to prevent the pen lead 7 from falling freely, and play a guiding role in the movement of the pen lead 7, so that the pen lead 7 placed in the pen lead placement area 4 automatically falls. Insert the pen lead 3 to obtain the effect of automatic feeding of the pen lead 7 when the pen lead 7 in the pen core 3 is used up, and the inner cylinder 2 has the function of storing a certain amount of pen lead, which saves time and improves efficiency. Reduce the impact on physical health; this product meets the requirements of students to use mechanical pencils in class, saves the time of changing the lead, improves the efficiency of learning and office work, and greatly reduces the harm to the body.

Preferably, as shown in Figures 1 to 3, the connection between the working area 3-1 and the carrying area 3-2 of the pen core 3 is a circular arc transition connection structure 3-4, so that the pen lead 7 can be drawn from the carrying area side. After the groove 3-3 enters, it automatically slides into the work area 3-1.

Preferably, as shown in Figure 2, the bearing area 3-2 of the pen core 3 is a cylinder whose diameter is 1.5 times the diameter of a pencil lead, and the side slot 3-3 of the bearing area is located on the side of the cylinder. wall, the width of the slot 3-3 on the side of the loading area is also 1.5 times the diameter of a pencil lead, so that only one pencil lead 7 can be allowed to enter the loading area 3- through the slot 3-3 on the side of the loading area at a time. 2. Avoiding the risk of parallel falling of the pen lead 7 during feeding, the pen lead 7 falling into the carrying area 3-2 can directly expose the pen lead from the pen tip by pressing the indenter 8 at the end of the pencil.

Preferably, as shown in FIG. 1 , the working area 3 - 1 of the pen core 3 is connected with a pen lead telescoping device 6 .

Preferably, as shown in FIG. 1 , a pressure head 8 for pressing the pen core 3 to continuously send out the pen lead 7 is installed at the tail end of the pen core 3 .

Preferably, as shown in FIG. 1 , the carrying area 3 - 2 of the refill 3 extends upward from the working area 3 - 1 of the refill to the end of the pen. In the present embodiment, the 30-35mm below the pen core 3 is the working area 3-1, and the upper part is the carrying area 3-2, and the pressure head 8 is installed at the tail end of the carrying area 3-2.

Preferably, as shown in Figure 1, the mechanical pencil also includes an outer cylinder 1, that is, the shell of the lead, the inner cylinder 2 is supported in the outer cylinder 1, and the diameter of the outer cylinder 1 is 8-15mm , the diameter of the inner cylinder 2 is 6-9mm.

Preferably, as shown in FIG. 1 , a rotatable and removable screw cap 9 is installed at the tail of the inner cylinder 2 .

Preferably, both the outer cylinder 1 and the inner cylinder 2 are made of transparent plastic material by extrusion or blow molding plastic molding process.

The working principle of the present invention is as follows:

Remove the screw tail cap 9 of the pen tail by rotating, put a large amount of pen lead into the pen lead placement area 4 at one time, and slot 3-3 on the side of the bearing area on the side wall of the pen lead bearing area to open from top to bottom A through groove with a width of 1.5 times the diameter of the pen lead allows only one pen lead 7 to pass through each time. The pen lead 7 inside the inner barrel 2 is automatically fed to the bearing area 3-2 of the pen core through the side slot 3-3 of the bearing area, and the pen lead 7 falling into the bearing area 3-2 can be pressed by the pressure head at the end of the pencil. 8. Directly expose the pen lead 7 from the nib, and the circular arc transition connection between the working area 3-1 of the pen core and the carrying area 3-2, so that the pen lead 7 can smoothly slide into the working area after passing through the carrying area 3-2 Area 3-1 is convenient for the pen lead 7 to enter the central position of the pen core, and is convenient for the pen lead 7 to be pushed out.

The specific embodiments described above have further described the technical problems, technical solutions and beneficial effects solved by the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (9)

1. A kind of 1. propelling pencil of auto-feed pencil lead, it is characterised in that：Including inner cylinder (2), and it is supported in inner cylinder (2) Pen core (3), the region between the pen core (3) and inner cylinder (2) is pencil lead rest area (4), and the pen core (3) includes the work of lower part Make the supporting region (3-2) on area (3-1) and top, the workspace (3-1) close to nib, the supporting region (3-2) close to a tail, It is provided with the supporting region (3-2) of the pen core (3) and falls into supporting region (3-2) for feeding the pencil lead in pencil lead rest area (4) Supporting region side fluting (3-3), the bottom of the inner cylinder (2) is arranged to spiral tilting baffle (5), the spiral tilting baffle (5) lowest point extends to the bottom of supporting region side fluting (3-3), also, the spiral tilting baffle (5) is from the inner cylinder (2) edge is tilted to pen core (3) direction.
2. 2. the propelling pencil of auto-feed pencil lead according to claim 1, it is characterised in that：The work of the pen core (3) Area (3-1) and the junction of supporting region (3-2) are arc transition connection structure (3-4), so that pencil lead (7) is slotted from supporting region side (3-3) slips into workspace (3-1) automatically after entering.
3. 3. the propelling pencil of auto-feed pencil lead according to claim 1, it is characterised in that：The carrying of the pen core (3) Area (3-2) is 1.5 times of the cylindrical drum that diameter is the vertical footpath of one-pen, and the supporting region side fluting (3-3) is located at cylindrical drum Side wall, the width of the supporting region side fluting (3-3) are also 1.5 times of the vertical footpath of one-pen.
4. 4. the propelling pencil of auto-feed pencil lead according to claim 1, it is characterised in that：The work of the pen core (3) Area (3-1) is connected with pencil lead telescopic device (6).
5. 5. the propelling pencil of auto-feed pencil lead according to claim 4, it is characterised in that：Tail in the pen core (3) End is provided with for pressing pen core (3) so that the pressure head (8) that pencil lead (7) is constantly sent out.
6. 6. the propelling pencil of auto-feed pencil lead according to claim 1, it is characterised in that：The carrying of the pen core (3) Area (3-2) extends upwardly to a tail from the workspace of pen core (3-1).
7. 7. the propelling pencil of auto-feed pencil lead according to claim 1, it is characterised in that：This propelling pencil further includes outer Cylinder (1), the inner cylinder (2) are supported in the outer barrel (1), a diameter of 8-15mm of the outer barrel (1), the inner cylinder (2) A diameter of 6-9mm.
8. 8. the propelling pencil of auto-feed pencil lead according to claim 1, it is characterised in that：Tail in the inner cylinder (2) Portion is provided with the spiral tail cap (9) of rotatable dismounting.
9. 9. the propelling pencil of auto-feed pencil lead according to claim 7, it is characterised in that：The outer barrel (1) and inner cylinder (2) transparent plastic material is utilized, is formed using the plastics molding process of extrusion or blowing.