Automatic fountain pen

Abstract

The invention relates to the field of automatic fountain pens, in particular to an automatic fountain pen which comprises a barrel-shaped pen holder, and a plurality of first bosses arranged at intervals are annularly arranged on the inner wall of the pen holder; the pressing rod is arranged in the pen holder in a sliding mode, and the top of the pen refill is inserted into the pressing rod; the ball is arranged in the containing hole, part of the ball is exposed out of the pen holder, and part of the ball is exposed out of the pen holder; and the C-shaped lantern ring is arranged on the pen holder in a sleeving mode and located in the second containing groove, and the inner wall of the C-shaped lantern ring abuts against the ball. When the pen point falls, the pen point is stressed to enable the pressing rod to be stressed upwards, at the moment, the ball moves outwards, the C-shaped lantern ring is opened, the pressing rod can move upwards, the pen point is retracted into the pen holder, and it is guaranteed that the pen point is not damaged. During writing, the handheld part is located at the C-shaped lantern ring, inward force can be applied to the ball, it is guaranteed that the pressing rod cannot move upwards, and normal writing can be guaranteed. In this way, the service life of the automatic fountain pen can be prolonged, and damage is avoided.

Description

Technical Field

[0001] The invention relates to an automatic fountain pen, and in particular provides an automatic fountain pen. Background Art

[0002] Automatic fountain pens with springs are popular among users because the nibs can be retracted into the pen barrel when not in use and the nibs can be protected without a pen cap.

[0003] However, during use, it is inevitable that the pen will fall to the ground, especially when the pen tip hits the ground and is subjected to a strong impact, the pen tip will be damaged, causing the automatic fountain pen to be unable to continue to be used and requiring a new refill, resulting in a high cost of use.

[0004] Therefore, a kind of automatic fountain pen is in need of badly to solve the above-mentioned technical problems. Summary of the invention

[0005] The present invention aims to solve the above technical problem, that is, to solve the problem that the nib of the existing automatic fountain pen is easily damaged when it falls.

[0006] In a first aspect, the present invention provides an automatic fountain pen, comprising:

[0007] A cylindrical pen holder, wherein a plurality of first bosses arranged at intervals are arranged on the inner wall of the pen holder;

[0008] A pressing rod is slidably disposed in the pen holder, and the top of the pen core is inserted into the pressing rod; a plurality of vertically disposed strip grooves are disposed on the side wall of the pressing rod, and the first boss is at least partially slidably disposed in the strip grooves;

[0009] The bottom end of the pressing rod is provided with a first receiving groove, the first receiving groove is located below the strip groove, and a plurality of first concave grooves are provided at intervals on the top surface of the first receiving groove;

[0010] A pressing collar, which is sleeved on the pressing rod and located in the first receiving groove, and a first convex tooth is convexly provided on the top surface of the pressing collar and corresponds to the first concave groove in a one-to-one manner;

[0011] A second receiving groove is provided on the pen holder, the second receiving groove is located below the second boss, and a plurality of receiving holes are provided on the bottom wall of the second receiving groove;

[0012] A ball, wherein the accommodating hole is provided with the ball, and the ball is partially exposed outwardly from the pen holder and partially exposed inwardly from the pen holder;

[0013] A C-shaped collar, which is sleeved on the pen holder and located in the second receiving groove, and the inner wall of the C-shaped collar abuts against the ball;

[0014] Pressing the pressing rod can cause the ball to move upward along the outer side wall of the bottom end of the pressing rod and move to below the pressing collar and be located in the first receiving groove, so that the pen core is exposed from the pen holder for writing;

[0015] During the pressing process, the first convex tooth is embedded in the first concave groove.

[0016] Preferably, the automatic fountain pen further comprises a rubber sleeve, which is sleeved on the pen shaft and the C-shaped ring. Under the action of the rubber sleeve and the C-shaped ring, the ball portion is embedded in the first accommodating groove.

[0017] Preferably, a plurality of second bosses are arranged at intervals on the inner wall of the pen holder, the first bosses and the second bosses are arranged in one-to-one correspondence, the second bosses are located below the first bosses, and the two are arranged at intervals;

[0018] A plurality of third bosses are provided in a spacer ring on the outer side surface of the top of the pressing collar, the lower surface of the third bosses is sawtooth-shaped, and the gap between two adjacent third bosses is located below the first convex teeth;

[0019] The third boss has a first inclined surface and a second inclined surface from the first end to the second end;

[0020] A third inclined surface is disposed at the top end of the second boss, and the third inclined surface has the same inclination direction as the second inclined surface;

[0021] During the pressing process, the second inclined surface can contact the third inclined surface, and the pressing ring can rotate relative to the pen barrel to move the second boss to the first end of the second inclined surface.

[0022] Preferably, the first concave groove is respectively a fourth inclined surface and a fifth inclined surface from the first end to the second end, and the fifth inclined surface is provided with a second concave groove.

[0023] Pressing the pressing rod again can cause the top end of the first convex tooth to gradually move into the second concave groove, and the second boss to move below the first inclined surface, and can cause the second boss to move between two adjacent third bosses, so that the pressing rod can move downward and the pen core and the pressing rod can rebound.

[0024] Preferably, the bottom end of the first boss is pointed and protrudes downward, and the top surface of the third boss is pointed and protrudes upward. During the rebound process, the first boss can reset the pressing ring.

[0025] Preferably, an annular groove is provided on the outer surface of the pressing collar, and when the pressing collar rebounds, the ball can move into the annular groove, and then the ball moves downward along the side walls of the pressing collar and the pressing rod.

[0026] Preferably, the outer side of the bottom end of the pressing rod is provided with a chamfer.

[0027] Preferably, a spring is further included, which is sleeved on the bottom end of the pen core, and the bottom end abuts against the pen shaft, and the spring can drive the pressing rod and the pressing sleeve ring to rebound.

[0028] In the case of adopting the above technical scheme, the automatic fountain pen of the present invention comprises: a cylindrical pen holder, a plurality of first bosses arranged at intervals are arranged on the inner wall of the pen holder; a pressing rod, which is slidably arranged in the pen holder, and the top of the pen core is inserted in the pressing rod; a plurality of vertically arranged strip grooves are arranged on the side wall of the pressing rod, and the first bosses are at least partially slidably arranged in the strip grooves; a first accommodating groove is arranged on the bottom end of the pressing rod, the first accommodating groove is located below the strip groove, and a plurality of first concave grooves are arranged at intervals on the top surface of the first accommodating groove; a pressing ring is sleeved on the pressing rod and is located in the first accommodating groove, and the top surface of the pressing ring is convexly provided with a groove aligned with the first concave groove. A first convex tooth is arranged correspondingly; a second accommodating groove is arranged on the pen body, the second accommodating groove is located below the second boss, and a plurality of accommodating holes are arranged on the bottom wall of the second accommodating groove; a ball is arranged in the accommodating hole, and the ball is partially exposed to the outside of the pen body and partially exposed to the inside of the pen body; a C-shaped ring is arranged on the pen body and is located in the second accommodating groove, and the inner wall of the C-shaped ring abuts against the ball; pressing the pressing rod can make the ball move upward along the outer wall of the bottom end of the pressing rod, and move to the bottom of the pressing ring and be located in the first accommodating groove, and then the pen core is exposed to the pen body for writing; during the pressing process, the first convex tooth is embedded in the first concave groove.

[0029] When the pen falls, the force on the pen tip will cause the pressing rod to be subjected to an upward force, which will cause the ball to move outward and open the C-shaped ring, allowing the pressing rod to move upward and the pen tip to be retracted into the pen holder to ensure that the pen tip is not damaged; in addition, when writing, because the hand grip is located at the C-shaped ring, it can give the ball an inward force to ensure that the pressing rod does not move upward, and normal writing can be guaranteed. In this way, the service life of the automatic fountain pen can be extended and damage can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0031] Figure 1 It is a structural schematic diagram of the automatic fountain pen provided by the present invention;

[0032] Figure 2is a cross-sectional view of the automatic fountain pen provided by the present invention;

[0033] Figure 3 It is a partial cross-sectional view of the automatic fountain pen provided by the present invention;

[0034] Figure 4 It is a partial structural schematic diagram of the pen holder provided by the present invention;

[0035] Figure 5 The local structure of the automatic fountain pen provided by the present invention is shown in FIG. Figure 1 ;

[0036] Figure 6 It is a schematic diagram of the structure of the third boss and the first boss provided by the present invention cooperating with each other;

[0037] Figure 7 The local structure of the automatic fountain pen provided by the present invention is shown in FIG. Figure 1 ;

[0038] Figure 8 The third boss and the second boss provided by the present invention are matched with each other. Figure 1 ;

[0039] Fig. 9 The local structure of the automatic fountain pen provided by the present invention is shown in FIG. Figure 2 ;

[0040] Fig.10 The third boss and the second boss provided by the present invention are matched with each other. Figure 2 ;

[0041] Fig.11 The local structure of the automatic fountain pen provided by the present invention is shown in FIG. Figure 3 ;

[0042] Fig.12 The third boss and the second boss provided by the present invention are matched with each other. Figure 3 ;

[0043] Fig.13 The local structure of the automatic fountain pen provided by the present invention is shown in FIG. Figure 4 ;

[0044] Fig.14 The third boss and the second boss provided by the present invention are matched with each other. Figure 4 ;

[0045] Fig.15 The local structure of the automatic fountain pen provided by the present invention is shown in FIG. Figure 5 ;

[0046] Fig.16 The third boss and the second boss provided by the present invention are matched with each other. Figure 5 .

[0047] List of reference numerals:

[0048] 1. Pen body; 11. First boss; 12. Second boss; 13. Accommodation hole; 2. Pressing rod; 21. Strip groove; 22. First accommodating groove; 23. First concave groove; 24. Second concave groove; 3. Pressing ring; 31. First convex tooth; 32. Third boss; 321. First inclined surface; 322. Second inclined surface; 33. Annular groove; 4. C-shaped ring; 5. Ball; 6. Rubber sleeve; 7. Spring; 8. Pen core. DETAILED DESCRIPTION

[0049] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0050] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0051] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] like Figure 1-16 As shown, this embodiment discloses an automatic fountain pen, which includes a pen body 1, a pressing rod 2, a pressing ring 3, a C-shaped ring 4, a pen core 8, a rubber sleeve 6 and a spring 7.

[0053] The pen holder 1 is cylindrical, and specifically includes a first rod portion and a second rod portion, wherein the first rod portion and the second rod portion are threadedly connected, and the second rod portion includes a tip, through which the pen core 8 can extend outward. A spring 7 is sleeved on the pen core 8, and the two ends of the spring 7 are respectively abutted against the abutment portion of the pen core 8 and the second rod portion, and the spring 7 mainly plays the role of making the pen core 8 rebound.

[0054] The inner wall of the pen holder 1 is provided with a plurality of first bosses 11 and a plurality of second bosses 12 arranged at intervals. The first bosses 11 and the second bosses 12 are arranged one by one, and the second bosses 12 are located below the first bosses 11, and the two are arranged at intervals. The first bosses 11 and the second bosses 12 are both in the shape of long strips and are arranged along the length direction of the pen holder 1. The bottom end of the first boss 11 is a pointed shape protruding downwards,

[0055] The pressing rod 2 is slidably disposed in the pen holder 1. The pressing rod 2 is specifically hollow, and the top of the pen core 8 is inserted into the pressing rod 2. A plurality of vertically disposed strip grooves 21 are disposed on the side wall of the pressing rod 2. The first boss 11 is at least partially slidably disposed in the strip groove 21. During the pressing process, the first boss 11 can slide in the strip groove 21. The strip groove 21 and the first boss 11 start the limiting function, so that the pressing rod 2 cannot rotate.

[0056] The bottom end of the pressing rod 2 is provided with a first receiving groove 22, which is located below the strip groove 21, and a plurality of first concave grooves 23 are provided at intervals on the top surface of the first receiving groove 22. The pressing collar 3 is sleeved on the pressing rod 2 and located in the first receiving groove 22, and the top surface of the pressing collar 3 is provided with a first convex tooth 31 which is provided in a one-to-one correspondence with the first concave groove 23. The first concave groove 23 is provided with a fourth inclined surface and a fifth inclined surface from the first end to the second end, respectively, and a second concave groove 24 is provided on the fifth inclined surface, wherein the angle between the fourth inclined surface and the vertical surface is smaller than the angle between the second inclined surface 322 and the vertical surface, that is, the fourth inclined surface is steeper and the fifth inclined surface is gentler. The second concave groove 24 is matched with the top end of the first convex tooth 31, so that the first convex tooth 31 can extend into the second concave groove 24.

[0057] The pen barrel 1 is provided with a second receiving groove, which is located below the second boss 12, and a plurality of receiving holes 13 are provided on the bottom wall of the second receiving groove. A ball 5 is provided in the receiving hole 13, and the ball 5 is partially exposed to the outside of the pen barrel 1 and partially exposed to the inside of the pen barrel 1. The C-shaped collar 4 is sleeved on the pen barrel 1 and is located in the second receiving groove, and the inner wall of the C-shaped collar 4 abuts against the ball 5; the rubber sleeve 6 is sleeved on the pen barrel 1 and the C-shaped collar 4, and under the action of the rubber sleeve 6 and the C-shaped collar 4, the ball 5 is partially embedded in the first receiving groove 22.

[0058] A plurality of third bosses 32 are provided at intervals on the outer surface of the top of the pressing collar 3. The lower surface of the third bosses 32 is sawtooth-shaped, and the gap between two adjacent third bosses 32 is located below the first convex teeth 31.

[0059] The third boss 32 has a first inclined surface 321 and a second inclined surface 322 from the first end to the second end. A third inclined surface is disposed at the top end of the second boss 12, and the third inclined surface and the second inclined surface 322 have the same inclined direction.

[0060] The outer surface of the pressing collar 3 is provided with an annular groove 33 . When the pressing collar 3 rebounds, the ball 5 can move into the annular groove 33 , and then the ball 5 moves downward along the side walls of the pressing collar 3 and the pressing rod 2 .

[0061] When the pen tip is stored in the pen holder 1, that is, in the initial state, the first convex tooth 31 is arranged opposite to the first concave groove 23, the second boss 12 is located below the third boss 32, and the third boss 32 moves downward to enable the third inclined surface to contact the second inclined surface 322.

[0062] like Figure 5 As shown, during the pressing process (this process is performed in the initial state), the pressing rod 2 is pressed downward, and the pressing rod 2 can make the ball 5 move upward along the outer wall of the bottom end of the pressing rod 2, and move to the bottom of the pressing ring 3, and be located in the first receiving groove 22, and then the pen core 8 is exposed from the pen body 1 for writing;

[0063] During the pressing process, Figure 5-10 As shown, the first convex tooth 31 is embedded in the first concave groove 23; the pressing rod 2 can drive the pressing ring 3 to move downward, so that the second inclined surface 322 can contact the third inclined surface, and the pressing ring 3 can rotate relative to the pen body 1, so that the second boss 12 moves to the second end of the second inclined surface 322, specifically refer to Figure 8 After the second boss 12 moves to the first end of the second inclined surface 322 (see Fig.10 ), the part of the pen tip exposed outward is the longest. In this process, the first convex tooth 31 will move to the second concave groove 24, so as to recycle the pen core 8 after pressing again.

[0064] like Fig.11 and 12 As shown, after the pressing rod 2 is released, under the action of the spring 7, the pen core 8, the pressing rod 2 and the pressing collar 3 all have a small rebound amount. After the rebound, the first inclined surface 321 of the pressing collar 3 is located above the third boss 32, so that when pressing again, the first inclined surface 321 can contact the third inclined surface.

[0065] During the second pressing process (this process is carried out in the writing state), Figure 11-14 As shown, the pressing rod 2 can make the top of the first convex tooth 31 gradually move into the second concave groove 24 and fit into the second concave groove 24. Moreover, the first inclined surface 321 can contact the third inclined surface, and then the pressing ring 3 rotates, and the second boss 12 can move between two adjacent third bosses 32, so that the pressing rod 2 can move downward, and the pen core 8 and the pressing rod 2 can rebound. During the rotation process of the pressing ring 3, it can fit into the second concave groove 24 and can escape from the second concave groove 24.

[0066] There is a flat surface between two adjacent second concave grooves 24. During the pressing process, after the first convex tooth 31 is released from the second concave groove 24, the top of the first convex tooth 31 will abut against the flat surface (see Fig.13 ), and the final grounding portion is located on a side close to the second end.

[0067] The top surface of the third boss 32 is pointed and protrudes upward. When the pen core 8 is pressed again, it rebounds under the action of the spring 7 after the pen core 8 is stretched out to the maximum (see Fig.15 ), during the rebound process, the first boss 11 can reset the pressing collar 3. Specifically, the inclined surface of the second end of the first boss 11 contacts the inclined surface of the first end of the third boss 32, which will cause the pressing collar 3 to rotate from the first end to the second end, so that the first convex tooth 31 is located directly below the first concave groove 23 (see Fig.16 ) to return the pressing ring 3 to its initial position for the next writing press.

[0068] In addition, if Fig.13 and 15 As shown, during the pressing process again, the pressing member can drive the pressing collar 3 to move downward, which will cause the ball 5 to move upward relative to the pressing collar 3 and move into the annular groove 33. At this time, the bottom surface of the pressing collar 3 fits the side wall of the bottom of the first receiving groove 22. During the rebound, the ball 5 moves along the outer side wall of the pressing collar 3 and the side wall of the bottom end of the pressing rod 2 to the bottom of the pressing rod 2, and the pen core 8 is retracted into the pen holder 1.

[0069] The outer side of the bottom end of the pressing rod 2 is provided with a chamfer, which plays a guiding role and enables the ball 5 to move upward along the side wall of the pressing rod 2 relative to the pressing rod 2 .

[0070] After the pen tip is exposed, when the automatic fountain pen accidentally falls and the pen tip is subjected to a large force, the pressing rod 2 moves upward, which causes the ball 5 to exert an outward force on the outer C-shaped ring 4 and the rubber sleeve 6, and causes the ball 5 to move outward, so that the pressing rod 2 can move upward smoothly, and the ball 5 moves along the side wall at the bottom of the pressing rod 2 to the bottom of the pressing rod 2; and the pen core 8 is retracted into the pen holder 1. It is ensured that the pen tip will not be subjected to excessive force, and thus the pen tip will not be damaged.

[0071] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An automatic fountain pen, characterized in that: It includes: A cylindrical pen holder (1), wherein a plurality of first bosses (11) are arranged at intervals on the inner wall of the pen holder (1); A pressing rod (2) is slidably arranged in the pen holder (1), and the top of the pen core (8) is inserted into the pressing rod (2); a plurality of vertically arranged strip grooves (21) are arranged on the side wall of the pressing rod (2), and the first boss (11) is at least partially slidably arranged in the strip groove (21); The bottom end of the pressing rod (2) is provided with a first receiving groove (22), the first receiving groove (22) is located below the strip groove (21), and a plurality of first concave grooves (23) are provided at intervals on the top surface of the first receiving groove (22); A pressing collar (3) is sleeved on the pressing rod (2) and is located in the first receiving groove (22). The top surface of the pressing collar (3) is upwardly convexly provided with a first convex tooth (31) corresponding to the first concave groove (23); The pen holder (1) is provided with a second receiving groove, the second receiving groove is located below the second boss (12), and a plurality of receiving holes (13) are provided on the bottom wall of the second receiving groove; A ball (5), wherein the accommodating hole (13) is provided with the ball (5), and the ball (5) is partially exposed outwardly from the pen holder (1) and partially exposed inwardly from the pen holder (1); A C-shaped collar (4) which is sleeved on the pen holder (1) and is located in the second receiving groove, and the inner wall of the C-shaped collar (4) abuts against the ball (5); Pressing the pressing rod (2) can cause the ball (5) to move upward along the outer wall of the bottom end of the pressing rod (2) and move to below the pressing ring (3) and be located in the first receiving groove (22), so that the pen core (8) is exposed from the pen holder (1) for writing; During the pressing process, the first convex tooth (31) is embedded in the first concave groove (23).

2. The automatic fountain pen according to claim 1, characterized in that: The automatic fountain pen further comprises a rubber sleeve (6) which is sleeved on the pen holder (1) and the C-shaped sleeve ring (4). Under the action of the rubber sleeve (6) and the C-shaped sleeve ring (4), the ball (5) is partially embedded in the first receiving groove (22).

3. The automatic fountain pen according to claim 2, characterized in that: A plurality of second bosses (12) are arranged at intervals on the inner wall of the pen holder (1), the first bosses (11) and the second bosses (12) are arranged in one-to-one correspondence, the second bosses (12) are located below the first bosses (11), and the two are arranged at intervals; A plurality of third bosses (32) are provided in a spacer ring on the outer surface of the top of the pressing collar (3); the lower surface of the third bosses (32) is sawtooth-shaped, and the gap between two adjacent third bosses (32) is located below the first convex teeth (31); The third boss (32) comprises a first inclined surface (321) and a second inclined surface (322) from the first end to the second end; A third inclined surface is provided at the top end of the second boss (12), and the third inclined surface has the same inclination direction as the second inclined surface (322); During the pressing process, the second inclined surface (322) can contact the third inclined surface, and the pressing ring (3) can rotate relative to the pen barrel (1) to move the second boss (12) to the first end of the second inclined surface (322).

4. The automatic fountain pen according to claim 3, characterized in that: The first concave groove (23) has a fourth inclined surface and a fifth inclined surface from the first end to the second end, and the fifth inclined surface is provided with a second concave groove (24). During the second pressing process, the pressing rod (2) can make the top end of the first convex tooth (31) gradually move into the second concave groove (24), and the second boss (12) move below the first inclined surface (321), and can make the second boss (12) move between two adjacent third bosses (32), so that the pressing rod (2) can move downward, and the pen core (8) and the pressing rod (2) can rebound.

5. The automatic fountain pen according to claim 4, characterized in that: The bottom end of the first boss (11) is in a pointed shape protruding downward, and the top surface of the third boss (32) is in a pointed shape protruding upward. During the rebound process, the first boss (11) can reset the pressing ring (3).

6. The automatic fountain pen according to claim 5, characterized in that: The outer surface of the pressing collar (3) is provided with an annular groove (33), and when pressed and rebounded, the ball (5) can move into the annular groove (33), and then the ball (5) moves downward along the side walls of the pressing collar (3) and the pressing rod (2).

7. The automatic fountain pen according to claim 1, characterized in that: The outer side of the bottom end of the pressing rod (2) is provided with a chamfer.

8. The automatic fountain pen according to claim 1, characterized in that: It also includes a spring (7) which is sleeved on the bottom end of the pen core (8) and abuts against the pen holder (1). The spring (7) can drive the pressing rod (2) and the pressing sleeve ring (3) to rebound.

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