CN210634307U

CN210634307U - Pen capable of automatically returning refill when falling

Info

Publication number: CN210634307U
Application number: CN201920348082.7U
Authority: CN
Inventors: 汪明非
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-19
Filing date: 2019-03-19
Publication date: 2020-05-29
Anticipated expiration: 2029-03-19

Abstract

The utility model discloses a pen capable of automatically returning refill when falling. The pen comprises a pen clip, a pen holder, a pen core, a pen point, a linkage part, a balance weight, a spring I and a spring II, wherein the linkage part, the balance weight, the spring I and the spring II are all arranged in the pen holder; the spring I is fixed in the pen body, and the upper end of the spring I is connected with a balance weight; the upper part of the pen holder is provided with a hole for supporting and limiting the linkage component, the bottom of the linkage component positioned in the pen holder is provided with an inclined plane, and the inclined plane is used for contacting with the top end of the counterweight. The utility model discloses adopted special link gear on the basis that has general pen structure, added counter weight and spring, on the basis that has general ballpoint pen function, realized the function of the automatic refill that retracts when the pen falls to and the function that the whipping pen can retract the refill.

Description

Pen capable of automatically returning refill when falling

Technical Field

The utility model belongs to the stationery field, concretely relates to automatic pen that returns core when falling.

Background

Pens are necessities accompanying daily life of people, most of ball-point pens and pens in the market nowadays have the defects of being fragile and easy to break, and particularly, the pen is broken more frequently for students and other groups with high pen demands. However, a ballpoint pen with a damaged nib is difficult to write normally, and cannot use the remaining ink, even the user may be exposed to a situation where no pen is available. Therefore, how to reduce the accidental breaking probability of the pen is an urgent problem to be solved.

At present, there are many solutions for accidental falling damage of pens at home and abroad from various aspects, but there are few solutions similar to the principle of the project. Most schemes cause some inconvenient influences on daily use of the pen, and lack sufficient practicability and market value. The results of such research have not been significantly reflected in the market and the problem remains to be researched and solved.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem in the background art, the utility model provides an automatic pen that returns core when falling retracts the refill by oneself when the body of a brush weightlessness in order to avoid the nib to damage. The principle is as follows: when the pen falls due to loss of support, the pen body does accelerated motion under the action of gravity acceleration; the pen body is used as a non-inertial reference system, the gravity borne by the balance weight in the pen body offsets with the inertial force borne by the balance weight in the opposite direction of the gravity, and the balance weight is simultaneously under the elastic action of the spring compressed by the balance weight before the pen falls, so that the balance weight can be pushed for a certain distance in the spring rebounding process, and a locking mechanism of the pen core is triggered and unlocked, so that the pen core rebounds to the inside of the pen head, and the effect of avoiding the damage of the pen core due to the exposed impact is realized.

The technical scheme of the utility model as follows:

the utility model discloses a pen clip, the pen-holder, the refill, the nib, pen holder open-end department inlays and is equipped with the pen clip, the pen-holder is hollow structure, the refill sets up in the pen-holder, the nib is installed to the pen-holder bottom, the refill stretches out outside the nib, still include linkage part, counter weight, spring I and spring II, linkage part, counter weight, spring I and spring II all set up in the pen-holder, refill bottom global is equipped with the outward flange, the refill cover that is located the outward flange below is equipped with spring II, the nib up end is equipped with cylindrical boss, open the through-hole that is used for passing the refill in the middle of the cylindrical boss, install; both sides of the upper part of the pen holder are respectively provided with a strip hole and a clamping groove, and the strip hole and the clamping groove are positioned above the pen core; linkage part mainly comprises pressing structure, bearing structure and limit structure triplex, and bearing structure connects between pressing structure and limit structure, presses the structural support in rectangular hole department, presses the structural part and stretches out rectangular hole external use in manual promotion linkage part, is located the inside inclined plane that sets to of pressing structure bottom surface of pen-holder, and the inclined plane is used for contacting with the counter weight top, and the bearing structure bottom supports the refill upper end, and limit structure clamps in the draw-in groove.

The upper end of the pen core is not contacted with the inclined plane of the pressing structure.

One side of the upper end of the pen clip is connected with a vertical rod, and one side of the vertical rod, which is close to the pen holder, is provided with a convex block which is opposite to the position of the clamping groove and is adaptive to the notch of the clamping groove.

The cylindrical boss is located inside the pen holder, the outer diameter of the cylindrical boss is smaller than the inner diameter of the pen holder, and the inner diameter of the spring I is larger than the diameter of the through hole in the middle of the cylindrical boss.

And selecting a counterweight with light weight on the premise of pushing the linkage part by the counterweight.

The counter weight is located the inclined plane below, and spring I is in compression state under the counter weight pressure effect.

When the pen is in a normal writing state, the limiting structure of the linkage part is clamped in the clamping groove, the pen core extends out of the pen head under the pressure action of the linkage part, the counterweight compresses the spring I, and the upper end of the counterweight is not contacted with the linkage part; when the pen is thrown in free falling or by external force, the balance weight is under the spring force of the spring I in a compression state in a weightless state, the balance weight is in contact with an inclined plane in the linkage part and pushes the linkage part to move, the linkage part moves towards one side far away from the clamping groove first, so that the limiting effect of the limiting structure and the clamping groove disappears, then the linkage part moves towards one side of the top end of the pen holder, the pressure effect of the supporting structure of the linkage part on the pen core disappears, and the pen core rebounds under the action of the spring II and then retracts into the pen head.

When the vertical rod receives the acting force towards one side of the clamping groove, the convex block at the lower part of the vertical rod extends into the clamping groove to push the limiting structure to be away from the clamping groove, the linkage component moves towards one side of the top end of the pen holder after losing the limiting effect of the limiting structure, the pressure of the supporting structure of the linkage component on the refill disappears, and the refill rebounds and retracts into the pen point under the action of the spring II.

The utility model has the advantages that:

the utility model discloses simple structure has added counter weight and spring on the basis of ordinary pen function, has realized that the refill can retract automatically when the pen falls, whipping or the function of body of placing the refill that can retract automatically of level.

Compared with the common pen, the utility model discloses can reduce the unexpected probability of damaging of refill, increase the use reliability of pen and prolong its life to a certain extent, compensate the defect of a class product on the market, also can bring more convenient for daily use simultaneously.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a left side view of the external structure of fig. 1.

FIG. 3 is a right side view of the external structure of FIG. 1 with the pen clip removed.

Fig. 4 is a structural diagram of the linkage member and a stress analysis diagram of the linkage member according to the present invention.

Fig. 5 is a schematic diagram of the motion state of the pen when the pen is in free fall or is subjected to large downward acceleration, and (a) and (b) are two motion states of the pen respectively.

In the figure: the pen holder comprises a pen clip (1), a linkage component (2), a pressing structure (2-1), a supporting structure (2-2), a limiting structure (2-3), a pen holder (3), a pen core (4), a balance weight (5), a spring I (6), a spring II (7), a pen point (8), a strip hole (9), a vertical rod (10), a clamping groove (11) and a cylindrical boss (12).

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the utility model discloses a pen clip 1, linkage part 2, pen-holder 3, refill 4, counter weight 5, spring I6, spring II 7 and

nib

8, 3 open-end parts on the top of pen-holder are inlayed and are equipped with pen clip 1, pen-holder 3 is hollow structure, the refill sets up inside 3 pen-holders, nib 8 is installed to 3 bottoms of pen-holder, refill 4 stretches out outside nib 8, linkage part 2, counter weight 5, spring I6 and spring II 7 all set up inside 3 pen-holders, 4 global being equipped with the outward flange in refill bottom, 4 covers of refill 4 that are located the outward flange below and is equipped with spring II 7, 8 up ends of nib are equipped with cylindrical boss 12, open the through-hole that is used for passing refill 4 in the middle of cylindrical boss 12, install spring I6 between.

As shown in fig. 2 and 3, the two sides of the upper part of the pen holder 3 are respectively provided with a long hole 9 and a clamping groove 11, and the long hole 9 and the clamping groove 11 are positioned above the pen core 4.

As shown in fig. 1 and 4, the linkage part 2 mainly comprises a pressing structure 2-1, a supporting structure 2-2 and a limiting structure 2-3, the supporting structure 2-2 is connected between the pressing structure 2-1 and the limiting structure 2-3, the pressing structure 2-1 is supported at the position of the long hole 9, the pressing structure 2-1 partially extends out of the long hole 9 and is used for manually pushing the linkage part 2, the bottom surface of the pressing structure 2-1 located inside the pen holder 3 is provided with an inclined surface which is used for being contacted with the top end of the counterweight 5, the bottom of the supporting structure 2-2 is abutted against the upper end of the pen core 4, and the limiting structure 2-3 is clamped in the clamping groove 11. When the spring I6 rebounds to push the counterweight 5 to contact the linkage part 2, the inclined surface of the pressing structure 2-1 of the linkage part 2 is subjected to an acting force F1 perpendicular to the inclined surface, the acting force F1 perpendicular to the inclined surface is decomposed into a vertical upward force F3 and a horizontal leftward force F2, the vertical upward force F3 is balanced with the supporting force of the clamping groove 11 in the initial state, the horizontal leftward force F2 pushes the limiting structure 2-3 to leave the clamping groove 11, after the linkage part 2 leaves the clamping groove 11, the supporting force of the clamping groove 11 on the linkage part 2 disappears at the moment, and the linkage part 2 continues to move upwards along the clamping groove 11. The pressure action of the supporting structure 2-2 of the linkage part 2 on the pen core 4 disappears, and the pen core 4 is retracted into the pen head 8 after rebounding under the action of the spring II 7.

The specific implementation process comprises the following steps:

as shown in fig. 1, when the pen is in a normal writing state, the limit structure of the linkage part 2 is clamped in the clamping groove 11, and the pen core 4 extends out of the pen point 8 under the pressure action of the linkage part 2; as shown in fig. 5, which is a motion state of the pen when the pen falls freely or is subjected to a large downward acceleration, as shown in fig. 5(a), the counterweight 5 moves upward under the spring force of the spring i 6 in a compressed state, the counterweight 5 contacts with the inclined surface of the pressing structure 2-1 in the linkage part 2 to push the linkage part 2 to move, the linkage part 2 moves towards one side away from the clamping groove 11 first, so that the limiting effect of the limiting structure 2-3 and the clamping groove 11 disappears, as shown in fig. 5(b), then the linkage part 2 moves towards one side of the top end of the pen holder 3, the pressure effect of the linkage part 2 on the pen core 4 disappears, and the pen core 4 rebounds under the action of the spring ii 7 and then retracts into the pen point 8.

When the pen core 4 needs to be manually pushed out in a normal writing state, the pressing structure 2-1 of the linkage part 2 is pushed, so that the limiting structure 2-3 in the linkage part 2 is clamped in the clamping groove 11, and the pen core 4 is manually pushed out.

When the refill 4 needs to be retracted manually in a normal writing state, the vertical rod 10 is pushed towards one side of the clamping groove 11, a convex block at the lower part of the vertical rod 10 extends into the clamping groove 11, the limiting structure 2-3 in the linkage part 2 is pushed to be away from the clamping groove 11, the pressure of the linkage part 2 on the refill 4 disappears, and the refill 4 rebounds under the action of the spring II 7 and retracts into the pen point 8.

Claims

1. A pen capable of automatically returning a refill when falling comprises a pen clip (1), a pen holder (3), a refill (4) and a pen point (8), wherein the pen clip (1) is embedded at an opening at the top end of the pen holder (3), the pen holder (3) is of a hollow structure, the refill is arranged in the pen holder (3), the pen point (8) is arranged at the bottom end of the pen holder (3), and the refill (4) extends out of the pen point (8). the pen is characterized by further comprising a linkage component (2), a balance weight (5), a spring I (6) and a spring II (7), wherein the linkage component (2), the balance weight (5), the spring I (6) and the spring II (7) are all arranged in the pen holder (3), an outer flange is arranged on the peripheral surface of the bottom of the refill (4), and the refill (; the spring I (6) is fixed in the pen body, and the upper end of the spring I (6) is connected with the balance weight (5); the upper part of the pen holder (3) is provided with a hole for supporting and limiting the linkage component (2), the bottom of the linkage component (2) positioned in the pen holder (3) is provided with an inclined plane, and the inclined plane is used for contacting with the top end of the balance weight (5).

2. The pen capable of automatically returning the refill in falling is characterized in that the upper part of the pen holder (3) is provided with a long hole (9) and a clamping groove (11), the long hole (9) and the clamping groove (11) are respectively positioned at two sides of the upper part of the pen holder (3), and the long hole (9) and the clamping groove (11) are positioned above the refill (4); the linkage component (2) mainly comprises a pressing structure (2-1), a supporting structure (2-2) and a limiting structure (2-3), the supporting structure (2-2) is connected between the pressing structure (2-1) and the limiting structure (2-3), the pressing structure (2-1) is supported at a long hole (9), the pressing structure (2-1) partially extends out of the long hole (9) and is used for manually pushing the linkage component (2), the bottom surface of the pressing structure (2-1) located inside a pen holder (3) is arranged into an inclined surface, the inclined surface is used for contacting with the top end of a counterweight (5), the bottom of the supporting structure (2-2) abuts against the upper end of a pen core (4), and the limiting structure (2-3) is clamped in a clamping groove (11).

3. The pen capable of automatically returning the refill in case of falling as claimed in claim 1, wherein the upper end face of the pen head (8) is provided with a cylindrical boss (12), a through hole for passing through the refill (4) is formed in the middle of the cylindrical boss (12), and a spring I (6) is arranged between the cylindrical boss (12) and the counterweight (5).

4. The pen capable of automatically returning the refill when falling is characterized in that the upper end of the refill (4) is not in contact with the inclined surface of the pressing structure (2-1).

5. The pen capable of automatically returning the refill when falling is characterized in that one side of the upper end of the pen clip (1) is connected with a vertical rod (10), and one side of the vertical rod (10) close to the pen holder (3) is provided with a lug which is opposite to the position of the clamping groove (11) and is matched with the notch of the clamping groove (11).

6. The pen capable of automatically returning the refill when falling as claimed in claim 3, wherein the cylindrical boss (12) is positioned inside the pen holder (3) and has an outer diameter smaller than the inner diameter of the pen holder (3), and the inner diameter of the spring I (6) is larger than the diameter of the middle through hole of the cylindrical boss (12).

7. The pen with the function of automatically returning the refill when falling is characterized in that the counterweight (5) is positioned below the inclined plane, and the spring I (6) is in a compressed state under the pressure of the counterweight (5).