Dot matrix pen

Abstract

The dot matrix pen comprises a first shell, a support and a pen core, a groove is formed in the middle of the outer side of the support, a strip-shaped groove is formed in the bottom of the groove, a connecting piece is arranged in the groove, one end of the connecting piece is connected with the pen core, the other end of the connecting piece is connected with a connecting rod, and the connecting rod is connected with the support. The other end of the connecting rod is connected with a cross-shaped sliding piece, one end of the cross-shaped sliding piece is connected with a compression spring in a sleeved mode, a limiting mechanism is arranged at the position, located above the strip-shaped groove, of the inner side of the support, and a pressure sensor is movably installed in the square hole and connected with a connecting elastic piece. According to the dot matrix pen, the pen core stretches out and draws back in a pressing mode, the problem that the pen cap is lost is solved, and meanwhile the dot matrix pen is opened and closed in the stretching-out and drawing-back process of the pen core so that the dot matrix pen can be started and closed.

Description

Technical Field

[0001] This utility model relates to the field of dot matrix pen technology, specifically a dot matrix pen. Background Technology

[0002] Dot matrix pens, also known as smart pens, utilize infrared recognition technology. They use paper with dot matrix dots and high-speed infrared cameras to capture the information written on the paper and synchronize it with the screen.

[0003] Existing dot matrix pens typically employ a cap-and-pen structure because numerous components need to be installed within the pen body. In practical applications, the pen is activated by removing the cap. However, because the cap is detached from the pen body, it is prone to being lost, leaving the pen in a continuously activated state. This shortens the pen's lifespan, rendering it unusable and resulting in waste. Summary of the Invention

[0004] To address this technical deficiency in the prior art, this utility model discloses a dot matrix pen, including a first housing, a bracket, and a pen refill. A groove is provided in the middle of the outer side of the bracket, and a strip-shaped groove is provided at the bottom of the groove. A connector is provided in the groove, one end of which is connected to the pen refill, and the other end of which is connected to a connecting rod. The other end of the connecting rod is connected to a cross-shaped slider, one end of which is fitted with a compression spring. A limit mechanism is provided on the inner side of the bracket above the strip-shaped groove. A cylindrical groove is provided on the upper surface of the connector, and a square hole penetrating the connector is provided at the end of the cylindrical groove. A square groove is provided on the lower surface of the connector, connected to the square hole. The square groove connects to the square hole, and a pressure sensor is movably installed in the square hole. The pressure sensor is connected to a connecting spring.

[0005] Preferably, the connector is further provided with an L-shaped connecting hole and an arc-shaped column head, the arc-shaped column head being located on one side of the square groove of the connector, the arc-shaped column head protruding from the lower end face of the connector and extending longitudinally.

[0006] Preferably, the cross-shaped slider has a through hole at its center, which is used to connect one end of the connecting rod, and the other end of the connecting rod is connected to the L-shaped connecting hole.

[0007] Preferably, the tail of the bracket is provided with a cavity for sliding, the cross-shaped slider reciprocates in the cavity, and the other end of the cross-shaped slider is provided with a cylindrical tube.

[0008] Preferably, a threaded ring is fixedly provided at the end of the bracket. The threaded ring is used to install a spherical cap. The spherical cap is provided with a circular hole. A conical compression spring and a pressing post are installed in the spherical cap. A limit edge is provided in the middle of the pressing post.

[0009] Preferably, a convex groove is provided at the bottom of the cavity, and a pen refill groove and a connecting rod groove are respectively provided on both sides of the groove on the bracket, and the convex groove is connected to the connecting rod groove.

[0010] Preferably, a switch is mounted on the bracket, the switch comprising a second housing, two spaced-apart connecting pieces, a V-shaped spring, and a rotating tongue.

[0011] Preferably, the limiting mechanism is used to limit the engagement of the arc-shaped column head, and the side of the arc-shaped column head is provided with a beveled engagement joint adapted to the limiting mechanism.

[0012] Preferably, a pressure sensor is installed in the square hole.

[0013] In summary, the beneficial effects of this utility model include providing a dot matrix pen with a simple structure, enabling the pen tip to extend and retract by pressing to solve the problem of lost pen cap, and simultaneously enabling the dot matrix pen to be turned on and off during the extension and retraction of the pen tip. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram illustrating the effect of an embodiment of the present utility model;

[0016] Figure 2 This is an exploded view of the structure in Embodiment 1 of this utility model;

[0017] Figure 3 This is a schematic diagram of the outer structure of the bracket in Embodiment 1 of this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the connector in Embodiment 1 of this utility model;

[0019] Figure 5 This is a three-dimensional structural diagram of the connector in Embodiment 1 of this utility model;

[0020] Figure 6 This is a schematic diagram of the connection structure in Embodiment 1 of this utility model;

[0021] Figure 7 This is a schematic diagram of the inner structure of the bracket in Embodiment 1 of this utility model;

[0022] Figure 8 This is a schematic diagram of the pressure sensor and connecting spring in Embodiment 1 of this utility model;

[0023] Figure 9 This is a schematic diagram of the support structure in Embodiment 1 of this utility model;

[0024] Figure 10 This is a schematic diagram of the support structure in Embodiment 1 of this utility model;

[0025] Figure 11 This is a schematic diagram of the cross-shaped slider and compression spring in Embodiment 1 of this utility model;

[0026] Figure 12 This is a schematic diagram of the switch in Embodiment 1 of this utility model;

[0027] Figure 13 This is a schematic diagram of the internal structure of the switch in Embodiment 1 of this utility model;

[0028] In the figure, the first housing 1, bracket 2, pen refill 3, connector 4, connecting rod 5, cross-shaped slider 6, compression spring 7, limiting mechanism 8, pen clip 9, and battery compartment 10 are shown.

[0029] Opening 11;

[0030] Switch 20;

[0031] Second housing 201, connecting piece 202, V-shaped spring piece 203, rotating tongue 204;

[0032] 21. Groove 22. Strip groove 23. Cavity 24. Threaded ring 25. Spherical cap 26. Conical compression spring 27. Pressing post 28. Pen refill through groove 29. Connecting rod through groove;

[0033] Convex groove 231, round hole 251, limiting edge 271;

[0034] 41. Columnar groove; 42. Square hole; 43. Square groove; 44. L-shaped connecting hole; 45. Arc-shaped column head;

[0035] Card edge 411;

[0036] Pressure sensor 421, connecting spring 422;

[0037] Through hole 61, cylindrical tube 62. Detailed Implementation

[0038] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] Example 1: Refer to Figure 1-13 As shown, this utility model discloses a dot matrix pen, including a first housing 1, a bracket 2, and a pen core 3. A groove 21 is provided in the middle of the outer side of the bracket 2, and a strip groove 22 is provided at the bottom of the groove 21. A connector 4 is provided in the groove 21, and a protruding edge is provided inward on the edge of the groove 21. Correspondingly, the two sides of the connector 4 are also provided with outer edges to realize the axial sliding of the connector 4 in the groove 21. One end of the connector 4 is connected to the pen core 3, and the other end of the connector 4 is connected to a connecting rod 5. The other end of the connecting rod 5 is connected to a cross-shaped slider 6. One end of the cross-shaped slider 6 is sleeved with a compression spring 7. A limit mechanism 8 is provided on the inner side of the bracket 2 above the strip groove 22.

[0042] By applying a pushing force to the cross-shaped slider 6, the cross-shaped slider 6 moves forward, thereby driving the connecting rod 5 to move the connecting piece 4, and in turn driving the pen refill 3 to extend.

[0043] When the pen refill 3 is in the extended state, the limiting mechanism 8 limits the connecting piece 4, thereby maintaining the pen refill 3 in the extended state.

[0044] When a pushing force is applied to the cross-shaped slider 6 again, the connecting rod 5 will move the connecting piece 4 a little further to release the restriction of the limiting mechanism 8, so that the cross-shaped slider 6 will move back under the action of the compression spring 7, thereby realizing the retraction of the pen refill 3.

[0045] Preferably, the upper end face of the connector 4 is provided with a cylindrical groove 41, which is used to insert the pen refill 3. The two sides of the cylindrical groove 41 are provided with protruding retaining edges 411 to increase the stability of the pen refill 3. The end of the cylindrical groove 41 is provided with a square hole 42 that passes through the connector 4. A square groove 43 is provided on the lower end face of the connector 4 and connected to the square hole 42. The square groove 43 is connected to the square hole 42. A pressure sensor 421 is movably installed in the square hole 42 and abuts against the tail of the pen refill 3. The pressure sensor 421 is connected to a connecting spring 422. The connecting spring 422 is fixed in the square groove 43. The connecting spring 422 is used to provide support force to the pressure sensor 421, so that the pressure sensor 421 is relatively fixed in the square hole 42. When the pen refill 3 is writing, the pressure detection of the pressure sensor 421 at the tail of the pen refill 3 is more sensitive, and the detection of the pressure sensor 421 will not be distorted due to excessive force when writing.

[0046] The connecting piece 422 is connected to the circuit board of the dot matrix pen via a wire. It should be noted that the dot matrix pen holder 2 of this application has a battery slot 201 and locking posts for mounting built-in electronic components, both of which are existing technologies and will not be described in detail. Furthermore, the electronic components involved in this application only require adjustments to their size for suitability.

[0047] Preferably, the connector 4 is further provided with an L-shaped connecting hole 44 and an arc-shaped column head 45. The arc-shaped column head 45 is located on one side of the square groove 43 of the connector 4, and the arc-shaped column head 45 protrudes from the lower end face of the connector 4 and extends longitudinally.

[0048] Preferably, the cross-shaped slider 6 has a through hole 61 at its center, the through hole 61 is used to connect one end of the connecting rod 5, and the other end of the connecting rod 5 is connected to the L-shaped connecting hole 44.

[0049] It should be noted that the two ends of connecting rod 5 are bent at right angles.

[0050] Preferably, a switch 20 is installed on the bracket 2. The switch 20 includes a second housing 201, two spaced-apart connecting pieces 202, a V-shaped spring 203, and a rotating tongue 204. The V-shaped spring 203 is disposed in the rotating tongue 204, and one end of the V-shaped spring 203 abuts against the other connecting piece 202.

[0051] The connector 4 slides stably in the groove 21, thereby driving the arc-shaped column head 45 to slide in the strip groove 22. As the arc-shaped column head 45 slides and presses against the rotating tongue 204 to rotate, the other end of the rotating tongue 204 contacts one of the connecting pieces 202, thereby connecting the two spaced-apart connecting pieces 202. Both spaced-apart connecting pieces 202 are connected to the circuit board through wires, thus realizing the power-on of the dot matrix pen, which is achieved simultaneously with the extension of the pen tip.

[0052] Preferably, the tail of the bracket 2 is provided with a cavity 23 for sliding, and the cross-shaped slider 6 reciprocates in the cavity 23. The sliding mode of the cross-shaped slider 6 in the cavity 23 makes the retraction of the pen refill 3 smoother. The other end of the cross-shaped slider 6 is provided with a cylindrical tube 62.

[0053] Preferably, a threaded ring 24 is fixedly provided at the end of the bracket 2. The threaded ring 24 is used to install a spherical cap 25. A circular hole 251 is provided on the spherical cap 25. A conical compression spring 26 and a pressing post 27 are installed in the spherical cap 25. A limiting edge 271 is provided in the middle of the pressing post 27.

[0054] One end of the conical compression spring 26 abuts against the side wall of the threaded ring 24, and the other end abuts against the limiting edge 271 of the pressing post 27. The ball cap 25 is screwed onto the threaded ring 24 to achieve a fixed installation.

[0055] By pressing the pressing post 27 with a finger, the pressing post 27 extends into the cylindrical tube 62, pushing the cross-shaped slider 6 to slide in the cavity 23, thereby driving the connecting rod 5 to move the connecting piece 4, and then driving the pen refill 3 to extend. After releasing the finger, the pressing post 27 returns to its original position under the action of the conical compression spring 26. When it is necessary to retract the pen refill 3, simply press the pressing post 27 again.

[0056] The limiting mechanism 8 is used to limit the engagement of the arc-shaped column head 45, and the side of the arc-shaped column head 45 is provided with a beveled engagement joint adapted to the limiting mechanism 8.

[0057] The limiting mechanism 8 is existing technology and will not be described in detail. In order to enable the limiting mechanism 8 to be fixed when the pen refill 3 is extended and to be released when pressed again, the side of the arc-shaped column head 45 is provided with a beveled snap-fit ​​connector that is compatible with the limiting mechanism 8.

[0058] Preferably, the bottom of the cavity 23 is provided with a convex groove 231, and the bracket 2 is provided with a pen refill groove 28 and a connecting rod groove 29 on both sides of the groove 21, respectively, and the convex groove 231 is connected to the connecting rod groove 29.

[0059] The convex part of the convex groove 231 is for sliding of the connecting rod 5, and the other part is for sliding of the pen clip 9. The pen clip 9 is engaged with the cross-shaped slider 6, and the first housing 1 that is adapted to it is also provided with an opening 11.

[0060] In summary, the beneficial effects of this utility model include providing a dot matrix pen with a simple structure, enabling the pen tip to extend and retract by pressing to solve the problem of lost pen cap, and simultaneously enabling the dot matrix pen to be turned on and off during the extension and retraction of the pen tip.

[0061] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0062] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider 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 dot matrix pen, comprising a first housing (1), a support (2), and a pen tip (3), characterized in that, The bracket (2) has a groove (21) in the middle of its outer side, and a strip groove (22) at the bottom of the groove (21). A connector (4) is provided in the groove (21). One end of the connector (4) is connected to the pen refill (3), and the other end of the connector (4) is connected to a connecting rod (5). The other end of the connecting rod (5) is connected to a cross-shaped slider (6). One end of the cross-shaped slider (6) is fitted with a compression spring (7). A limit mechanism (8) is provided on the inner side of the bracket (2) above the strip groove (22). The upper end face of the connector (4) is provided with a cylindrical groove (41), and the end of the cylindrical groove (41) is provided with a square hole (42) penetrating the connector (4). A square groove (43) is provided on the lower end face of the connector (4) connected to the square hole (42). The square groove (43) is connected to the square hole (42). A pressure sensor (421) is movably installed in the square hole (42). The pressure sensor (421) is connected to a connecting spring (422).

2. A dot matrix pen according to claim 1, characterized in that, The connector (4) is also provided with an L-shaped connecting hole (44) and an arc-shaped column head (45). The arc-shaped column head (45) is located on one side of the square groove (43) of the connector (4). The arc-shaped column head (45) protrudes from the lower end face of the connector (4) and extends longitudinally.

3. A dot matrix pen according to claim 2, characterized in that, The cross-shaped slider (6) has a through hole (61) at its center. The through hole (61) is used to connect one end of the connecting rod (5), and the other end of the connecting rod (5) is connected to the L-shaped connecting hole (44).

4. A dot matrix pen according to claim 1, characterized in that, The tail of the bracket (2) is provided with a cavity (23) for sliding, and the cross-shaped slide (6) reciprocates in the cavity (23). The other end of the cross-shaped slide (6) is provided with a cylindrical tube (62).

5. A dot matrix pen according to claim 4, characterized in that, The end of the bracket (2) is fixedly provided with a threaded ring (24), which is used to install a spherical cap (25). The spherical cap (25) is provided with a round hole (251). A conical compression spring (26) and a pressing post (27) are installed in the spherical cap (25). A limit edge (271) is provided in the middle of the pressing post (27).

6. A dot matrix pen according to claim 5, characterized in that, The cavity (23) has a convex groove (231) at the bottom. The bracket (2) has a pen refill groove (28) and a connecting rod groove (29) on both sides of the groove (21). The convex groove (231) is connected to the connecting rod groove (29).

7. A dot matrix pen according to claim 2, characterized in that, The bracket (2) is equipped with a switch (20), which includes a second housing (201), two spaced connecting pieces (202), a V-shaped spring (203) and a rotating tongue (204).

8. A dot matrix pen according to claim 7, characterized in that, The limiting mechanism (8) is used to limit the engagement of the arc-shaped column head (45), and the side of the arc-shaped column head (45) is provided with a beveled engagement joint adapted to the limiting mechanism (8).

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