CN102452249A - Puncture-proof device - Google Patents

Abstract

The invention relates to a puncture-preventing device for an elongated sharp object, such as a pencil, comprising a hollow tubular body having an inner diameter slightly larger than the outer diameter of the internal object, such that the elongated sharp object, such as a pencil, can slide freely in the tubular body. One end of the tubular body has a holding hole for holding an object such as a pencil or the like in the tubular body. The pen body of the pencil can be pinched by fingers through the holding hole, so that normal writing can be carried out. The pencil can be retracted into the tubular body if the point of the pencil is inadvertently stuck to any object, as long as the finger is in a released state. Therefore, the tip of the pencil exerts a small force on the object to be pricked, and can prevent the user or others, especially their skin or eyes, from being pricked. The anti-stab device of the invention can also prolong the service life of objects such as pencils and correct the writing actions of users.

Description

anti-stab device

technical field

The invention relates to an anti-stab device, in particular to a device for preventing oneself or others from being stabbed by sharp objects such as pencils.

Background technique

Preschool and school-age children often accidentally pierce sharp objects such as toys, pencils, and chopsticks into the skin due to various reasons. When sharp objects pierce the eyes, it often leads to a significant decrease in the visual acuity of the injured person, and even cause blindness. This kind of injury is mainly caused by children's lack of life experience, lack of awareness of possible injuries, poor self-protection and ability to avoid injuries. The American Society for the Prevention of Blindness once pointed out in a report that in 2002 in the United States, tens of thousands of children under the age of 14 suffered serious eye injuries from objects. These objects that cause injuries include toys, stationery, household products, and sporting goods, among which pens and pencils are the second most dangerous items, causing more than 3,800 injuries.

On the other hand, when the pencil is used to the end, such as about 1/4 or about 4-5 cm long, the pencil is not easy to be held. Considering the daily usage of pencils all over the world, if the pencils are discarded at this time, it will cause a lot of waste.

The Chinese utility model patent ZL96208413.1 announced on January 1, 1997 discloses a learning tool that can be used in conjunction with a pencil. It is a pencil case used to extend the writing section of a pencil. A straight outside is smaller than the inner diameter of the sleeve, and the inner diameter of the sleeve head of the sleeve is adapted to the diameter of a standard pencil, which can be firmly set in the sleeve, and the inner diameter of the rest of the sleeve is smaller than the inner diameter of the sleeve head. When the pencil is used to the end and it is difficult to hold the pen, the end can be set on the sleeve of the sleeve, and the sleeve can be held to continue writing. The pencil sleeve helps to use the pencil as far as possible to the end.

The Chinese utility model patent ZL98200146.0 announced on June 23, 1999 discloses a kind of pen holder that is enclosed within on the pen holder of fountain pen, pencil, ballpoint pen. It consists of a cylindrical sleeve with a cylindrical through hole. The middle and lower part of the sleeve is formed with three elliptical arc concave surfaces made according to the natural shape of the finger. Among them, the centers of two adjacent elliptical arc concave surfaces are made with elliptical holes. , the elliptical holes communicate with the cylindrical through holes. The sleeve has elasticity, and the pen can be inserted into the sleeve from the cylindrical through hole when in use, and fixed at a place 2.5-3 cm away from the pen tip.

But in the above-mentioned patent, the pencil needs to be firmly housed in the pencil case or the case body, so the pencil case or case body still cannot prevent the user or others from being accidentally stabbed by the pencil. Therefore, there is a need in the prior art for a device to protect children from being stabbed by sharp objects such as pencils.

Contents of the invention

Therefore, an object of the present invention is to provide a device capable of preventing oneself or others from being stabbed by elongated sharp objects such as pencils.

Another object of the present invention is to provide a learning aid which can extend the writing range of stationery such as pencils.

In order to achieve the above object, the present invention provides an anti-stab device for elongated sharp objects, comprising a hollow tubular body, the inner diameter of the tubular body is slightly larger than that of the elongated sharp objects to be installed in the tubular body outer diameter such that the elongated point is free to slide after being loaded into the tubular body; one end of the tubular body is a gripping end, and the gripping end has a Hold holes for elongated sharp objects.

The length of the tubular body may be greater than the length of an elongated sharp object such as a pencil to be loaded therein.

The tubular body has a handle end. The holding end has a holding hole for holding objects such as pencils held in the tubular body. There can be 1-3 holding holes, the shape of which is suitable for pinching or resisting by the thumb, forefinger or middle finger. There is a writing hole on the end surface of the holding end to expose the nib or tip of a pencil or the like, the diameter of the writing hole is smaller than the outer diameter of the pencil or the like, and smaller than the inner diameter of the tubular body, so that the pencil or the like will not fall out .

Another alternative is to install a sleeve on the end face of the gripping end, one end of the sleeve is connected to the gripping end, the side of the sleeve has a writing hole, the diameter of the writing hole is smaller than that of the pencil, etc. The outer diameter of the object is also smaller than the inner diameter of the tubular body, so that objects such as pencils will not fall out. Preferably, the sleeve is flexible so as to be affixed to, for example, the tip portion of a pencil in use. In one embodiment, the number of the holding holes is three, the shape of the holding holes is oval or circular, and the cover includes three holes corresponding to the holding holes.

The tubular body may also have a tail end. The tail end is used to prevent the object such as a pencil from slipping out of the tubular body, and may include parts such as a cover and a plug, and the parts such as a cover and a plug can be connected to the tail end by any means , such as screw connections, crimping, bonding or buckling, etc.

In one embodiment of the present invention, the tail end comprises two parts, the inner wall of each part has portions protruding gradually in opposite directions, so that the inner diameter of the hole at the end of the tail end is slightly smaller than the elongated The outer diameter of a sharp object. Through the above structure, the elongated sharp object can be stuffed into the anti-stab device at the tail end, and then the tail end can keep the elongated sharp object in the anti-stab device .

The tubular body, the cover/plug and the cover in the anti-stab device of the present invention can be made of any suitable material, such as plastic, rubber, resin or metal. Preferably, parts such as the tubular body, the cap/plug and the sleeve are made of transparent and/or non-fragile materials.

The shape of the tubular body may be a hollow cylinder, a polygonal cylinder, an elliptical cylinder, etc., so as to match the shape of an object such as a pencil to be installed therein.

Taking a pencil as an example, after objects such as a pencil are installed in the anti-stab device of the present invention, the nib of the pencil can be exposed from the writing hole of the grip end simply by for example turning the grip end downward, and then Pass through above-mentioned holding hole with finger and pinch the pen body of pencil, at this moment can write with pencil normally. If you accidentally poke the tip against any object, simply release your finger to retract the pencil into the tubular body. Since the pencil slides freely within the tubular body, very little force is required to retract the pencil into the tubular body. That is to say, the tip of the pencil exerts little force on the pierced object and does not cause damage to the pierced object, thereby preventing the user or others from being stabbed, especially their skin or eyes.

The present invention prevents the tip or sharp part of a pencil or the like from piercing the body of the user or another person, especially the skin or eyes, thereby achieving the above-mentioned anti-stab effect. "Elimination of piercing pressure" is the core idea of the present invention.

Through the anti-stab device of the present invention, on the one hand, the user can hold objects such as pencils tightly through the grip hole to perform normal actions such as writing, and on the other hand, when not performing actions such as writing, he can relax. Fingers allow objects such as pencils to be easily retracted into the tubular body, thereby preventing inadvertent stabbing of the user or others.

And, since objects such as pencils are easy to retract into the tubular body when they are not being grasped, the anti-stab device of the present invention can also prevent the nib or sharp part of objects such as pencils from breaking when hitting hard objects, thereby extending Lifespan of objects such as pencils.

When the anti-stab device of the present invention is used in conjunction with a pen, the shape and position of the grip hole can be designed to help put fingers in the correct position for gripping and writing, therefore, the pen of the present invention The anti-stab device can help the user to master the correct posture of using the pencil, the position and strength of holding the pencil, etc. It is also a device for training and improving writing skills.

The anti-stab device of the present invention can be used in conjunction with very short pencils (such as only having 1-2 centimeters), so that the pencils can be used to the greatest extent. Even when the pencil is too short to be held directly, it can be put into the anti-stab device of the present invention. Thus, the anti-stab device of the present invention significantly prolongs the life of the pencil.

The anti-stab device of the present invention can be applied to any pens or any elongated tools, and can also be applied to occasions such as families, kindergartens, primary and secondary schools, training classes, and cram schools.

Description of drawings

Fig. 1 is a first embodiment of the anti-stab device according to the present invention, wherein the tip of the pencil is in the writing position.

Figure 2 is a first embodiment of the anti-stab device according to the invention with the tip of the pencil in the retracted position.

Fig. 3 is a second embodiment of the anti-stab device according to the present invention, wherein the tip of the pencil is in the writing position.

Figure 4 is a second embodiment of the anti-stab device according to the invention with the tip of the pencil in the retracted position.

Fig. 5 is a third embodiment of the anti-stab device according to the present invention, in which no elongated object is installed.

Fig. 6 is a side view of the embodiment shown in Fig. 5 along line A-A.

FIG. 7 is an enlarged schematic view of the rear end of the third embodiment of FIG. 5 .

Detailed ways

The technical solutions of the present invention will be described in detail below with preferred embodiments with reference to the accompanying drawings. 1 to 7 are respectively the first embodiment, the second embodiment and the third embodiment of the anti-stab device of the present invention, wherein a pencil is used as an example of an elongated sharp object for illustration.

Figure 1 shows a first embodiment of the anti-stab device according to the invention. The anti-stab device includes a tubular body 1 , the inner diameter of the tubular body 1 is slightly larger than the outer diameter of the pencil 6 installed in the tubular body, so that the pencil 6 can slide freely in the tubular body 1 . The length of the tubular body 1 can be longer than the pencil contained therein, for example, a commonly used pencil is generally about 175 mm, and the length of the tubular body 1 can be 180-195 mm.

The shape of the tubular body 1 can be a hollow cylinder, a polygonal prism, an elliptical cylinder, etc., so as to match the shape of the pencil 6 to be installed therein. The thickness of the tubular body may be similar to that of a common ballpoint pen casing, for example in the range of about 0.05-0.5 mm.

One end of the tubular body 1 is a handle end 3 . The holding end 3 has a holding hole 5 for holding objects such as pencils in the tubular body. There can be 1-3 holding holes 5, and the shape is suitable for the thumb, forefinger or middle finger to pinch or hold the pencil through the holding holes. Preferably, the holding hole 5 is two holes, through which two fingers of the thumb, index finger and middle finger respectively pinch or hold the pencil. The distance between the holding hole 5 and the end face of the holding end 3 may be about 0.5-4 cm. The shape of each holding hole 5 can be circular, elliptical or elongated, and its diameter or length is about 0.3-3 centimeters, so that the tubular body and the pencil can be pinched with fingers.

There is a writing hole 4 on the end face of the holding end 3 so that the nib of the pencil 6 is exposed. The diameter of the writing hole 4 is smaller than the outer diameter of the pencil 6 and also smaller than the inner diameter of the tubular body 1, so that the pencil will not fall out.

The other end of the tubular body 1 is the tail end 2 . The tail end 2 is equipped with parts for preventing the pencil 6 from falling out of the tubular body 1, and this part may include parts such as a cover or a stopper, and the parts such as a cover or a stopper can be connected in any way. On the tail end, for example, threaded connection, crimping, bonding or buckling, etc., the connection may be detachable or fixed.

In this embodiment, preferably, the handle end 3 and its end surface can be integrally formed with the tubular body 1 . At this time, the pencil 6 can be put into the tubular body 1 from the tail end 2 , and then the tail end 2 is closed with a cover or a stopper, so as to keep the pencil 6 in the tubular body 1 .

The tubular body 1 and the above-mentioned cover or plug in the anti-stab device of the present invention can be made of any suitable material, such as plastic, rubber, resin or metal. Preferably, the tubular body and the cap or plug are made of transparent and/or non-fragile materials. In addition, information such as the manufacturer's name, trademark or model, or other patterns can be printed on the outer surface of the tubular body 1 .

As shown in Figure 1, the nib of the pencil 6 is in the writing position. After the pencil is installed in the anti-stab device of the present invention, the nib of the pencil can be exposed from the writing hole of the grip end simply by, for example, turning the grip end downwards, and then pass through Above-mentioned holding hole 5 pinches the pen body of pencil 6, at this moment can write with pencil 6 normally. If you accidentally poke the tip against any object, simply release your finger to allow the pencil to retract back into the tubular body. Since the pencil slides freely within the tubular body, very little force is required to retract the pencil into the tubular body. That is to say, the tip of the pencil exerts very little force on the pierced object, does not cause damage to the pierced object, and can prevent the user or others from being stabbed, especially their skin or eyes.

Figure 2 shows the tip of the pencil in the retracted position in the first embodiment of the anti-stab device according to the invention. As shown in Fig. 2, the nib of the pencil 6 is retracted into the tubular body 1 and will not stab any user. Even if the end surface of the gripping end 3 of the tubular body 1 touches any part of the user's body, it will not sting or hurt the user.

Figures 3 and 4 show a second embodiment of the anti-stab device according to the present invention, wherein Figure 3 shows the tip of the pencil in the writing position, and Figure 4 shows the tip of the pencil in the retracted position.

The arrangements of Figures 3 and 4 are similar to those of Figures 1 and 2, wherein like reference numbers refer to like parts. The difference between them is that, in the second embodiment of Fig. 3 and Fig. 4, a sleeve 7 is installed at the end of the handle end 3, and one end of the sleeve 7 is connected to the handle end, A writing hole 4 is provided on the side of the cover 7 . The writing hole 4 is aligned with the axis of the tubular body, as shown in FIGS. 3 and 4 . The diameter of the writing hole 4 is smaller than the outer diameter of objects such as the pencil, and also smaller than the inner diameter of the tubular body, so that the pencil will not fall out. In this embodiment, the handle end 3 may have no end face.

Preferably, the cover 7 is flexible or elastic, such as made of rubber, resin or plastic, so as to be attached to the tip of the pencil 6 when in use, as shown in Figure 3; The side of above-mentioned cover 7 can be flat, as shown in Figure 4.

In the second embodiment, preferably, the tail end 2 can be integrally formed with the tubular body 1 or fixed together. At this time, the pencil 6 can be installed into the tubular body 1 from the handle end 3 . That is to say, the cover 7 can be removed first, then the pencil 6 can be installed in the tubular body 1 , and then the cover 7 can be installed to seal the pencil 6 in the tubular body 1 .

Alternatively, in the second embodiment, the pencil 6 can also be installed into the tubular body 1 from the tail end 2, and this installation method is the same as that in the first embodiment. At this time, the sleeve 7 can be fixedly connected to the tubular body 1 .

A variation of the first and second embodiments is that the tail end 2 is an open end and/or the length of the tubular body 1 is less than the length of the pencil 6 . However, this method is easy to separate the tubular body 1 from the pencil 6, which is inconvenient to use, so it is not the most preferred solution.

Fig. 5 shows a third embodiment of the anti-stab device of the present invention. In this embodiment, the sleeve 7 is relatively long, extending beyond the gripping hole 5 . There are three holding holes 5, and the cover contains three holes corresponding to the holding holes, through which the user can hold the elongated object, such as a pencil. The anti-stab device may be a tubular body made of plastic such as ABS (terpolymer of butadiene-acrylonitrile-styrene). Described cover 7 can be soft plastics such as silica gel. One end of the cover 7 has a writing hole 4 which is smaller than the outer diameter of a pencil, and the nib can be exposed to facilitate writing.

In said third embodiment, the structure of the tail end 2 is improved. The tail end 2 comprises two inwardly protruding portions, the protrusions 9 smoothly bulge in opposite directions along the inner circumference of the tubular body of the anti-stab device, so that the diameter of the hole in the tail end is slightly smaller than the diameter of the thin hole. The outer diameter of the elongated object is shown in the side view of the anti-stab device in Figure 6.

FIG. 7 is an enlarged schematic view of the above-mentioned tail end of the third embodiment of FIG. 5 . As shown in FIG. 7 , the tail end 2 is divided into two parts along the groove 8 , and two protrusions 9 are formed on the inner side of the end portion of the tail end 2 . The two protrusions 9 protrude gradually along the inner circumferential surface of the tail end along the clockwise or counterclockwise direction, so that the distance between the highest points of the two protrusions 9 is smaller than the outer diameter of the elongated object. Through this structure, due to the elasticity of the tail end material (such as plastic), when it is necessary to pack a slender object such as a pencil, the nib can be inserted into the hole at the tail end, and the pencil can be pushed hard to expand the tail end 2, to load the pencil. After loading, the hole at the tail end 2 returns to its original shape, and because the diameter of the hole is smaller than the outer diameter of the pencil, the tail end 2 can prevent the pencil from falling out. If the elongated object needs to be taken out, for example, when the pencil is used to the end, the cover 7 can be taken off to make the pencil fall out;

To sum up, the anti-stab device of the present invention can prevent sharp objects such as pencils from stabbing users or others by separating the anti-stab device from sharp objects such as pencils instead of fixing them together. The mechanism of the anti-stab device of the present invention is that the user can pinch objects such as pencils therein with fingers through the holding hole, and the holding force can be directly applied to objects such as pencils. In a preferred embodiment, the anti-stab device is longer than the object such as a pencil, so that the object such as the pencil can be fully retracted into the anti-stab device when not in use, so as not to injure the user or others.

So far, the technical solution of the present invention has been described through the preferred embodiments and with reference to the accompanying drawings, the above should be considered as merely illustrating the principles and ideas of the present invention, and the applicant does not wish to limit the present invention to the above described and shown specific structure and operation. Those skilled in the art can make numerous modifications and changes to the scheme of the present invention without departing from the teaching of the present invention, so all these modifications and changes and their equivalents should also fall within the scope of the present invention.

Claims (19)

1. An anti-stab device for elongated sharp objects, comprising a tubular body (1), the inner diameter of the tubular body (1) is slightly larger than the outer diameter of the elongated sharp objects to be installed in the tubular body diameter, so that the elongated sharp object can slide freely after being loaded into the tubular body (1); one end of the tubular body (1) is a holding end (3), and the holding end (3) has Gripping holes (5) for holding elongated sharp objects to be contained in the tubular body. 2. Anti-stab device according to claim 1, characterized in that the length of the tubular body (1) is greater than the length of the elongated sharp object to be loaded therein. 3. The anti-stab device according to claim 1, characterized in that the shape of the tubular body is a hollow cylinder, a polygonal prism, an elliptical cylinder, to match the shape of the elongated sharp object ready to be installed therein . 4. The anti-stab device according to claim 1, characterized in that the number of said holding holes (5) is 1-3, and its shape is suitable for being pinched or resisted by the thumb, forefinger or middle finger through said holding holes. Long, thin, sharp objects that live therein. 5. The anti-stab device according to claim 4, characterized in that the number of said holding holes is 2, which are respectively used for pinching or resisting by two fingers in the thumb, forefinger and middle finger through said holding holes An elongated sharp object in a tubular body. 6. The anti-stab device according to claim 1, characterized in that the distance between the gripping hole and the end of the gripping end is about 0.5-4 cm. 7. The anti-stab device according to claim 1, characterized in that the shape of the holding hole is circular, oval or long groove, and the diameter or length is about 0.3-3 cm. 8. The anti-stab device according to claim 1, characterized in that there is a writing hole (4) on the end face of the gripping end, for exposing the tip portion of the elongated sharp object therein, the writing hole ( 4) has a diameter smaller than the outer diameter of the elongated sharp object (6), so that the elongated sharp object will not fall out. 9. The anti-stab device according to claim 8, characterized in that the gripping end (3) and its end surface are integrally formed with the tubular body (1). 10. The anti-stab device according to claim 1, characterized in that a cover (7) is installed at the end of the gripping end (3), the side of the cover (7) has a writing hole (4), The writing hole (4) is aligned with the axis of the tubular body (1), and is used to expose the tip portion of the elongated sharp object therein, the diameter of the writing hole is smaller than the outer diameter of the elongated sharp object, So that the elongated sharp objects will not fall out. 11. Anti-stab device according to claim 10, characterized in that the cover (7) is flexible or elastic, made of rubber, resin or plastic. 12. The anti-stab device according to claim 10, characterized in that the number of said holding holes (5) is 3, the shape of said holding holes (5) is oval or circular, and said cover (7) ) includes 3 holes corresponding to the holding holes (5). 13. The anti-stab device according to claim 1 or 10, characterized in that the other end of the tubular body (1) is a tail end (2), and the end face of the tail end (2) is in contact with the tubular body (1) Formed in one piece. 14. The anti-stab device according to claim 1 or 10, characterized in that the other end of the tubular body (1) is a tail end (2), and the tail end (2) is equipped with a device for preventing the elongated sharp The part by which objects fall out of said tubular body. 15. The anti-stab device according to claim 13, characterized in that said means for preventing elongated sharp objects from falling out of the tubular body comprises a cover or a plug detachably connected to said tail serve. 16. The anti-stab device according to claim 1 or 10, characterized in that the tail end (2) is an open end, and/or the length of the tubular body (1) is shorter than the length of the elongated sharp object. 17. Anti-stab device according to claim 1, characterized in that said tubular body is made of a transparent and/or non-fragile material. 18. The anti-stab device according to claim 1, characterized in that said elongated sharp object is a pencil, the tip portion of which is a nib. 19. The anti-stab device according to claim 1, characterized in that the tail end (2) comprises two parts, and the inner wall of each part has a part protruding gradually along the opposite direction, so that the hole at the end of the tail end The inner diameter is slightly smaller than the outer diameter of the elongated sharp object.

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