A gravity-sensing anti-fall pen

Abstract

The present invention discloses a weightless induction anti-fall pen, relating to an anti-fall pen. It includes a pen barrel, a pen core seat is slidably arranged in the pen barrel, a magnetic attraction structure is further arranged in the pen barrel, the magnetic attraction structure adsorbs the pen core seat, a retraction structure is further arranged between the pen core seat and the pen barrel. When the pen core touches the ground, the pen core seat contracts the pen core back into the pen barrel through the retraction structure. The beneficial effects of the present invention are as follows: By setting the magnetic attraction structure, the pen core seat can be relatively fixed with the pen barrel. At the same time, by setting the retraction structure, the upward movement of the pen core seat can be restricted after it moves downward, ensuring writing. Also, when the pen falls, the upward movement restriction on the pen core seat can be cancelled, so that the pen core can smoothly retract into the pen barrel after touching the ground, avoiding damage to the pen tip on the pen core; the structure is simple, and the above functions are realized by using a magnet and a cam, with strong reliability and low cost.

Description

Technical Field

[0001] The present invention relates to a fall-proof pen, and more particularly to a weightless induction fall-proof pen. Background Art

[0002] A pen is an essential office supply in our lives. Currently, there are various types of pens on the market, such as pens with pen caps, click pens, etc. When in use, there may be situations where the pen is not held firmly and drops, or when the pen is placed on a table, it rolls off. In many cases, when the pen drops, the tip of the pen collides with the ground, resulting in damage to the tip and making it unable to be used continuously. On the one hand, it causes waste of pen resources, and on the other hand, it is necessary to find a new pen for replacement, which will cause certain troubles to people's work and life.

[0003] Therefore, it is necessary to design a pen that does not affect normal writing and can retract the pen core into the pen barrel when the pen falls, so as to protect the tip from damage.

[0004] Based on this, the applicant has proposed a weightless induction fall-proof pen to solve the above technical problems. Summary of the Invention

[0005] Aiming at the deficiencies in the prior art, the present invention provides a weightless induction fall-proof pen, which can ensure normal writing and can retract the pen core into the pen barrel when the pen falls, so as to protect the tip from damage.

[0006] The present invention is solved by the following technical solutions:

[0007] A weightless induction fall-proof pen includes a pen barrel. A pen core seat is slidably arranged in the pen barrel. A magnetic attraction structure is also arranged in the pen barrel. The magnetic attraction structure adsorbs the pen core seat. A retraction structure is further arranged between the pen core seat and the pen barrel. When the pen tip touches the ground, the pen core seat contracts the pen core back into the pen barrel through the retraction structure.

[0008] Preferably, the retraction structure includes magnet D and a cam. The cam is rotationally connected in the pen barrel through a rotating shaft. A coupling is also arranged on the cam. A coupling hole is arranged on the pen core seat. The coupling is in mating connection with the coupling hole. Magnet D is slidably connected in the pen barrel and cooperates with the cam.

[0009] Preferably, magnet D slides down to block the cam to limit its rotation. After magnet D slides up, the cam rotates to drive the pen core seat to move up.

[0010] Preferably, the magnetic attraction structure includes magnet C provided on the refill seat, and magnet A and magnet B provided on the pen barrel. Magnet A and magnet B are arranged along the axis of the pen barrel and have the same magnetic pole direction. When the refill seat moves upward, magnet C and magnet A attract each other; when the refill seat moves downward, magnet C and magnet B attract each other.

[0011] Preferably, the magnetic pole on the lower side of magnet D is the same as the magnetic pole of magnet A facing the inner side of the pen barrel.

[0012] Preferably, the pen barrel includes a rear pen barrel, on which a sliding groove is provided for magnet D to slide, and an installation groove is also provided on the rear pen barrel for installing a cam.

[0013] Preferably, the pen barrel further includes a middle pen barrel, on the upper side of which a push rod is provided, and an arc-shaped notch is provided on the push rod for cooperation with the cam.

[0014] Preferably, a buckle is provided on the rear pen barrel for connection with the middle pen barrel.

[0015] Preferably, a pen clip is also provided on the middle pen barrel, and the magnetic attraction structure is provided on the upper side of the pen clip.

[0016] Preferably, a dial rod is further provided on the side of the refill seat, and a moving groove is provided on the middle pen barrel for the dial rod to slide up and down.

[0017] Preferably, the pen barrel further includes a front pen barrel, which is connected to the middle pen barrel by a thread.

[0018] Preferably, a jack is provided on the refill seat, and the refill is inserted into the jack.

[0019] Preferably, a spring piece is further provided on the jack, and the refill seat clamps the refill through the spring piece.

[0020] Preferably, the spring pieces are symmetrically arranged on the jack.

[0021] Preferably, the spring pieces incline towards the inner side of the refill seat.

[0022] The beneficial effects of the present invention are as follows: By setting the magnetic attraction structure, the refill seat can be kept relatively fixed with respect to the pen barrel. At the same time, by setting the retraction structure, the upward movement of the refill seat can be restricted after it moves downward, ensuring writing and also canceling the upward movement restriction on the refill seat when the pen falls, so that the refill can smoothly retract into the pen barrel after the pen tip touches the ground, avoiding damage to the pen tip on the refill; the structure is simple, and the above functions are achieved by using magnets and cams, with strong reliability and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will discuss the drawings required for the description of the embodiments or the prior art. Obviously, the technical solutions described in conjunction with the drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other embodiments and their drawings can be obtained based on the embodiments shown in these drawings.

[0024] Figure 1 is the overall structural sectional view of the present invention.

[0025] Figure 2 is the overall structural sectional view of the present invention.

[0026] Figure 3 is the three-dimensional structural schematic diagram of the present invention.

[0027] Figure 4 is the three-dimensional structural schematic diagram of the front pen barrel of the present invention.

[0028] Figure 5 is the three-dimensional structural schematic diagram of the middle pen barrel of the present invention.

[0029] Figure 6 is the three-dimensional structural schematic diagram of the rear pen barrel of the present invention.

[0030] Figure 7 is the three-dimensional structural schematic diagram of the cam of the present invention.

[0031] Figure 8 is the three-dimensional structural schematic diagram of the pen core holder of the present invention.

[0032] Figure 9 is the schematic diagram of the falling state of the present invention.

[0033] In the figure: 1. Front pen barrel, 2. Middle pen barrel, 3. Rear pen barrel, 4. Pen core, 5. Pen core holder, 6. Cam, 7. Magnet D, 8. Magnet C, 9. Magnet A, 10. Magnet B, 11. Pen clip, 12. Installation groove, 13. Thumb rod, 14. Rotating shaft, 15. Coupling, 16. Coupling hole, 17. Pushing rod, 18. Insertion hole, 19. Elastic piece. Detailed implementation manners

[0034] The following will clearly and completely describe the technical solutions of each embodiment of the present invention in conjunction with the drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments described in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts are within the scope protected by the present invention.

[0035] Embodiment 1:

[0036] AsFigures 1 to 9 As shown in the figure, a weightless induction anti-falling pen of the present invention includes a pen barrel. A pen core seat 5 is slidably arranged in the pen barrel. A jack 18 is arranged on the pen core seat 5. A pen core 4 is inserted into the jack 18. Two elastic pieces 19 are symmetrically arranged on the jack 18. The elastic pieces 19 incline towards the inner side of the pen core seat 5. The pen core seat 5 clamps the pen core 4 through the elastic pieces 19. The arrangement of the elastic pieces 19 makes the resistance small when the pen core 4 is inserted and the resistance large when it is pulled out. During use, the pen core 4 is not likely to slide out. A shift lever 17 is also arranged on the side of the pen core seat 5. A magnetic attraction structure is also arranged in the pen barrel. The magnetic attraction structure adsorbs the pen core seat 5. The magnetic attraction structure includes a magnet C8 arranged on the pen core seat 5, a magnet A9 and a magnet B10 arranged on the pen barrel. The magnet A9 and the magnet B10 are arranged along the axis direction of the pen barrel and have the same magnetic pole direction. When the pen core seat 5 moves upward, the magnet C8 and the magnet A9 adsorb each other. When the pen core seat 5 moves downward, the magnet C8 and the magnet B10 adsorb each other. A retraction structure is also arranged between the pen core seat 5 and the pen barrel. When the pen core 4 touches the ground, the pen core seat 5 retracts the pen core 4 into the pen barrel through the retraction structure. The retraction structure includes a magnet D7 and a cam 6. The cam 6 is rotationally connected in the pen barrel through a rotating shaft 14. A coupling shaft 15 is also arranged on the cam 6. A coupling hole 16 is arranged on the pen core seat 5. The coupling shaft 15 and the coupling hole 16 are cooperatively connected. The magnetic pole on the lower side of the magnet D7 is the same as the magnetic pole of the magnet A9 facing the inner side of the pen barrel. The magnet D7 is slidably connected in the pen barrel and cooperates with the cam 6. The magnet D7 slides downward to block the cam 6 to limit its rotation. After the magnet D7 slides upward, the cam 6 rotates to drive the pen core seat 5 to move upward. The pen barrel includes a rear pen barrel 3. A chute is arranged on the rear pen barrel 3 for the magnet D7 to slide. An installation groove 12 is also arranged on the rear pen barrel 3 for installing the cam 6. The pen barrel also includes a middle pen barrel 2. A top rod 13 is arranged on the upper side of the middle pen barrel 2. An arc-shaped notch is arranged on the top rod 13 to cooperate with the cam 6. A moving groove is arranged on the middle pen barrel 2 for the shift lever 17 to slide up and down. A buckle is arranged on the rear pen barrel 3 to connect with the middle pen barrel 2. A pen clip 11 is also arranged on the middle pen barrel 2. The magnetic attraction structure is arranged on the upper side of the pen clip 11. The pen barrel also includes a front pen barrel 1. The front pen barrel 1 and the middle pen barrel 2 are connected by threads.

[0037] Based on the principle of opposite magnetic poles attracting each other, when the pen core seat 5 is pushed to retract the pen core 4 into the pen barrel, the magnet C8 and the magnet A9 approach and adsorb tightly, thereby keeping the pen core 4 in the retracted state; when the pen core seat 5 is pushed to extend the pen core 4 out of the pen barrel, the magnet C8 and the magnet B10 approach and adsorb tightly, thereby keeping the pen core 4 in the extended state.

[0038] Based on the principle of like poles of magnets repelling each other, there is a repulsive force between magnet D7 and magnet A9. When the anti-fall pen is stationary in the vertical direction, magnet D7 is affected by gravity, and this gravity is greater than the repulsive force of magnet A9. As a result, magnet D7 drops and jams the cam 6, preventing it from rotating, and the pen core 4 is locked in the extended state for convenient writing. When the anti-fall pen falls and enters the weightless state, magnet D7 is simultaneously affected by the repulsive force of magnet A9 and finally slides into the upper side of the chute of the rear pen barrel 3, making the rotation of the cam 6 no longer restricted. At this time, if the pen core 4 collides with the ground or other objects, the pen core 4 can quickly retract into the pen barrel, thus protecting the tip of the pen core 4 from damage.

[0039] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0040] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A weightless induction anti-fall pen, comprising a pen holder, wherein a refill holder (5) is slidably provided in the pen holder, characterized in that: A magnetic attraction structure is also provided in the pen barrel, and the magnetic attraction structure attracts the pen core holder (5). A retraction structure is also provided between the pen core holder (5) and the pen barrel. When the pen core (4) touches the ground, the pen core holder (5) retracts the pen core (4) back into the pen barrel through the retraction structure. The retraction structure includes a magnet D (7) and a cam (6). The cam (6) is rotatably connected to the pen barrel through a rotating shaft (14). A coupling shaft (15) is also provided on the cam (6). A coupling hole (16) is provided on the pen core holder (5). The coupling shaft (15) is matched with the coupling hole (16). The magnet D (7) is slidably connected to the pen barrel and matches with the cam (6). The magnet D (7) slides down to clamp the cam (6) to limit its rotation. After the magnet D (7) slides up, the cam (6) The rotation drives the refill holder (5) to move upward, and the magnetic attraction structure includes a magnet C (8) arranged on the refill holder (5) and a magnet A (9) and a magnet B (10) arranged on the pen shaft. The magnet A (9) and the magnet B (10) are arranged along the axis direction of the pen shaft and have the same magnetic pole direction. The refill holder (5) moves upward so that the magnet C (8) and the magnet A (9) are attracted to each other. The refill holder (5) moves downward so that the magnet C (8) and the magnet B (10) are attracted to each other. The magnetic pole on the lower side of the magnet D (7) is the same as the magnetic pole of the magnet A (9) facing the inner side of the pen shaft. The pen shaft includes a rear pen shaft (3). A slide groove is provided on the rear pen shaft (3) for the magnet D (7) to slide. The rear pen shaft (3) is also provided with an installation groove (12) for installing the cam (6).

2. The weightlessness-sensing anti-fall pen according to claim 1, characterized in that: The pen holder also includes a middle pen holder (2), a push rod (13) is provided on the upper side of the middle pen holder (2), and an arc-shaped notch is provided on the push rod (13) to cooperate with the cam (6).

3. The weightlessness-sensing anti-fall pen according to claim 2, characterized in that: A pen clip (11) is also provided on the middle pen shaft (2), and the magnetic attraction structure is provided on the upper side of the pen clip (11).

4. The weightlessness-sensing anti-fall pen according to claim 2, characterized in that: A shifting rod (17) is also provided on the side of the refill holder (5), and a movable groove is provided on the middle pen holder (2) for the shifting rod (17) to slide up and down.

5. The weightlessness-sensing anti-fall pen according to claim 1, characterized in that: The refill seat (5) is provided with an insertion hole (18), the refill (4) is inserted into the insertion hole (18), and the insertion hole (18) is also provided with a spring piece (19), and the refill seat (5) clamps the refill (4) through the spring piece (19).

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