Dot matrix pen

Abstract

The dot matrix pen comprises a 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 in a sliding mode, an arc-shaped column head is arranged at one end of the connecting piece, and the arc-shaped column head protrudes out of the lower end face of the connecting piece; the sliding block slides in the strip-shaped groove; a switch is arranged on the inner side of the support in front of the strip-shaped groove, and the arc-shaped column head is used for closing the switch; the switch comprises a shell, two spaced connecting sheets, a V-shaped elastic sheet and a rotating tongue; one end of the connecting piece is connected with the refill, the other end of the connecting piece is connected with a connecting rod, a refill through groove and a connecting rod through groove are formed in the positions, located on the two sides of the groove, of the support respectively, the refill through groove and the connecting rod through groove are used for axial advancing of the refill and the connecting rod respectively, and the other end of the connecting rod is connected with a pressing mechanism; the dot matrix pen is simple in structure, the pen core of the dot matrix pen 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] The invention relates to the technical field of dot matrix pens, in particular to a dot matrix pen. Background Art

[0002] The dot matrix pen, also known as the smart pen, uses infrared recognition technology, paper with dot matrix code points and infrared high-speed camera capture technology to synchronize the information on the paper and screen after writing on the paper.

[0003] The existing dot matrix pen usually adopts a structure in which the pen cap is separated from the pen barrel because many components need to be installed in the pen barrel. In actual application, the dot matrix pen is activated by taking off the pen cap. However, because the pen cap is separated from the pen barrel, the dot matrix pen is always in the activated state when the pen cap is lost, which shortens the life cycle of the dot matrix pen and makes it impossible to continue to use it, resulting in waste. Summary of the invention

[0004] In order to solve this technical defect in the prior art, the present invention discloses a dot matrix pen, comprising a shell, a bracket and a pen core, wherein a groove is arranged on the middle part of the outer side of the bracket, a strip groove is arranged at the bottom of the groove, a connecting piece is slidably arranged in the groove, an arc-shaped column head is arranged at one end of the connecting piece, the arc-shaped column head protrudes from the lower end surface of the connecting piece and is located in the strip groove and slides;

[0005] A switch is arranged inside the bracket at the front of the strip-shaped slot, and the arc-shaped column head is used for closing the switch;

[0006] The switch comprises a housing, two spaced connecting pieces, a V-shaped spring piece and a rotating tongue;

[0007] One end of the connecting piece is connected to the pen core, and the other end of the connecting piece is connected to a connecting rod. The bracket is provided with a pen core groove and a connecting rod groove on both sides of the groove. The pen core groove and the connecting rod groove are respectively used for the axial movement of the pen core and the connecting rod. The other end of the connecting rod is connected to a pressing mechanism.

[0008] Preferably, a semi-cylindrical groove is provided on the upper end surface of the connecting member, a square hole penetrating the connecting member is provided at the end of the semi-cylindrical groove, and a circular limiting groove is provided at the bottom of the semi-cylindrical groove; at least two clamping protrusions are provided on the end surface of the other side of the connecting member opposite to the circular limiting groove;

[0009] An L-shaped connecting hole is also arranged on the upper end surface of the connecting piece, and a square notch is arranged on the end surface of the other side of the connecting piece opposite to the L-shaped connecting hole.

[0010] Preferably, a circuit board is also installed inside the bracket, a pressure sensor is installed in the square hole, the pressure sensor is connected to the circuit board via a flat cable, and the switch is fixedly installed on the circuit board.

[0011] Preferably, a strip-shaped limiting plate is clamped on the clamping protrusion.

[0012] Preferably, a core sleeve is installed in the semi-cylindrical groove, and a limiting protrusion is provided on the core sleeve.

[0013] Preferably, a boss is provided at the end of the bracket, the pressing mechanism is provided on the boss, the pressing mechanism comprises a button, a cam, a spring and an outer cylinder, the end of the cam is rotatably connected to a sleeve, and the connecting rod is connected to the sleeve.

[0014] Preferably, the outer cylinder is fixed to the boss by screws, and a U-shaped notch is provided on the outer cylinder.

[0015] Preferably, the sleeve is a cylindrical sleeve, one end of the sleeve is provided with a plug with a hole, and the sleeve is rotatably connected to the end of the cam by means of a screw.

[0016] Preferably, the spring plug is connected to the sleeve, one end of the spring abuts against the plug, and the other end abuts against the end surface of the boss.

[0017] Preferably, a column rod is arranged on the end surface of the boss.

[0018] In summary, the beneficial effects of the present invention include providing a dot matrix pen with a simple structure, which enables the dot matrix pen to extend and retract the pen core by pressing to solve the problem of the pen cap being lost, and at the same time, the dot matrix pen can be turned on and off during the extension and retraction of the pen core to start and close the dot matrix pen. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the effect in an embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the structural decomposition in an embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of a support structure in an embodiment of the present invention;

[0023] Figure 4 is a schematic diagram of one side of a connecting member in an embodiment of the present invention;

[0024] Figure 5 is a schematic diagram of another side of a connecting member in an embodiment of the present invention;

[0025] Figure 6 A schematic diagram of the structure of a bracket in an embodiment of the present invention;

[0026] Figure 7 is a schematic structural diagram of a cam and a sleeve in an embodiment of the present invention;

[0027] Figure 8 A schematic diagram of the structural relationship in an embodiment of the present invention;

[0028] Fig. 9 A schematic diagram of the structural relationship between the pressure sensor and the flat cable in an embodiment of the present invention;

[0029] Fig.10 A schematic diagram of the structural relationship in an embodiment of the present invention;

[0030] Fig.11 A schematic diagram of the structural relationship in an embodiment of the present invention;

[0031] Fig.12 A schematic diagram of the structural relationship in an embodiment of the present invention;

[0032] Fig.13 A schematic diagram of the structural relationship in an embodiment of the present invention;

[0033] Fig.14 A schematic diagram of the structural relationship in an embodiment of the present invention;

[0034] Fig.15 A schematic diagram of the structural relationship in an embodiment of the present invention;

[0035] Fig.16 Schematic diagram of the pressing structure relationship in an embodiment of the present invention;

[0036] Fig.17 is a schematic diagram of a switch in an embodiment of the present invention;

[0037] Fig.18 is a schematic diagram of the internal structure of a switch in an embodiment of the present invention;

[0038] In the figure, housing 1, bracket 2, refill 3, connector 4, connecting rod 5, pressing mechanism 6, battery 7;

[0039] Circuit board 20, groove 21, strip groove 22, pen core through groove 23, connecting rod through groove 24, battery compartment 25;

[0040] Arc-shaped column head 41, semi-cylindrical groove 42, square hole 43, clamping protrusion 44, L-shaped connecting hole 45, square notch 46, pressure sensor 47, strip-shaped limiting plate 48;

[0041] Switch 201, edge 211;

[0042] Shell 2011, connecting piece 2012, V-shaped spring piece 2013, rotating tongue 2014;

[0043] outer edge 411;

[0044] Circular limiting groove 421, refill cover 422, limiting protrusion 423;

[0045] Cable 471;

[0046] Boss 60, button 61, cam 62, spring 63, outer tube 64, sleeve 65;

[0047] Column 601;

[0048] U-shaped notch 641, thread ring 642, end cap 643;

[0049] Block 651. DETAILED DESCRIPTION

[0050] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to 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", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] Example: Refer to Figure 1-16 As shown, the present invention discloses a dot matrix pen, including a shell 1, a bracket 2 and a pen core 3, a groove 21 is arranged on the middle part of the outer side of the bracket 2, a strip groove 22 is arranged at the bottom of the groove 21, a connecting piece 4 is slidably arranged in the groove 21, a protruding edge 211 is arranged inwardly at the edge of the groove 21, and outer edges 411 are also arranged on both sides of the corresponding connecting piece 4 to realize the axial sliding of the connecting piece 4 in the groove 21; an arc-shaped column head 41 is arranged at one end of the connecting piece 4, the arc-shaped column head 41 protrudes from the lower end surface of the connecting piece 4 and slides in the strip groove 22; a switch 201 is arranged on the inner side of the bracket 2 located in front of the strip groove 22, and the arc-shaped column head 41 is used for closing the switch 201.

[0054] A circuit board 20 is also installed inside the bracket 2 , and the switch 201 is fixedly installed on the circuit board 20 .

[0055] The switch 201 includes a housing 2011, two spaced apart connecting pieces 2012, a V-shaped spring piece 2013 and a rotating tongue 2014; the rotating tongue 2014 is rotatably arranged in the housing 2011, and the rotating tongue 2014 is rotatably connected via a vertical shaft fixedly arranged in the housing 2011 to realize the rotation of the rotating tongue 2014 in the housing 2011.

[0056] The rotating tongue 2014 is an open V-shaped housing, and the V-shaped spring piece 2013 is located in the rotating tongue 2014. The V-shaped spring piece 2013 is squeezed by the rotation of the rotating tongue 2014, and one end of the V-shaped spring piece 2013 is continuously kept in contact with one of the connecting pieces 2012. When the rotating tongue 2014 rotates, one end of the rotating tongue 2014 is in contact with another connecting piece 2012, thereby achieving the connection between the two spaced connecting pieces 2012 and the closing of the switch 201.

[0057] To close the switch 201 , the other end of the tongue 2014 extends out of the housing 2011 and is located at the travel end of the arc column head 41 . To facilitate the arc column head 41 to push the tongue 2014 to rotate in and out of the housing 2011 , the tongue 2014 is an arc-shaped surface.

[0058] When the arc-shaped column head 41 is released from pushing the rotating tongue 2014 , the rotating tongue 2014 is reset under the elastic action of the V-shaped spring piece 2013 .

[0059] One end of the connecting member 4 is connected to the refill 3, and the other end of the connecting member 4 is connected to a connecting rod 5. The bracket 2 is provided with a refill groove 23 and a connecting rod groove 24 on both sides of the groove 21. The refill groove 23 and the connecting rod groove 24 are used for the axial movement of the refill 3 and the connecting rod 5 respectively. The other end of the connecting rod 5 is connected to a pressing mechanism 6.

[0060] Preferably, a semi-cylindrical groove 42 is provided on the upper end surface of the connecting member 4, a square hole 43 penetrating the connecting member 4 is provided at the end of the semi-cylindrical groove 42, and a circular limiting groove 421 is provided at the bottom of the semi-cylindrical groove 42; at least two clamping protrusions 44 are provided on the end surface of the other side of the connecting member 4 opposite to the circular limiting groove 421;

[0061] The upper end surface of the connecting member 4 is further provided with an L-shaped connecting hole 45 , and the end surface of the connecting member 4 opposite to the L-shaped connecting hole 45 is provided with a square notch 46 .

[0062] A pressure sensor 47 is installed in the square hole 43 , a core sleeve 422 is installed in the semi-cylindrical groove 42 , the core 3 is sleeved in the core sleeve 422 , and the end of the core 3 abuts against the pressure sensor 47 .

[0063] A limiting protrusion 423 is provided on the refill sleeve 422. When the refill sleeve 422 is installed in the semi-cylindrical groove 42, the limiting protrusion 423 is located in the circular limiting groove 421 with a certain movable space, so that the refill sleeve 422 can achieve a certain sliding in the semi-cylindrical groove 42, thereby triggering the pressure sensor 47 more sensitively.

[0064] The pressure sensor 47 is connected to the circuit board 20 via a flat cable 471, a portion of which is engaged in the square notch 46, and a strip limiting plate 48 is engaged with the engaging protrusion 44; specifically, the strip limiting plate 48 engaged in the engaging protrusion 44 in a sleeve manner protects the flat cable 471 to prevent the flat cable 471 from being pulled during the sliding of the connector 4, thereby causing the position of the pressure sensor 47 to shift and resulting in signal instability. At the same time, the strip limiting plate 48 limits the pressure sensor 47 to prevent it from falling out of the square hole 43.

[0065] In another embodiment, a boss 60 is provided at the end of the bracket 2, and the pressing mechanism 6 is provided on the boss 60. The pressing mechanism 6 includes a button 61, a cam 62, a spring 63 and an outer tube 64, wherein the structure and connection method of the button 61, the cam 62 and the outer tube 64 are prior arts and will not be elaborated.

[0066] The end of the cam 62 is rotatably connected to a sleeve 65 , and the connecting rod 5 is connected to the sleeve 65 .

[0067] Preferably, the outer cylinder 64 is fixed to the boss 60 by screws, and a U-shaped notch 641 is provided on the outer cylinder 64 , and the U-shaped notch 641 is used for the movement of the connecting rod 5 .

[0068] Preferably, the sleeve 65 is a cylindrical sleeve, and a plug 651 with a hole is provided at one end of the sleeve 65. The sleeve 65 is rotatably connected to the end of the cam 62 by a screw. As the button 61 is pressed, the cam 62 is driven to rotate relative to the sleeve 65, thereby pushing the sleeve 65 to move linearly, thereby realizing the movement of the connecting member 4 through the connecting rod 5.

[0069] It should be noted that there is a sufficient distance between the sleeve 65 and the bracket 2 to allow the sleeve 65 to move linearly.

[0070] After the button 61 is pressed again, the sleeve 65 is pushed back by the spring 63 to retract the pen core 3 and disconnect the switch 201 . During this process, the cam 62 rotates relative to the sleeve 65 .

[0071] Preferably, the spring 63 is plugged into the sleeve 65 , one end of the spring 63 abuts against the plug 651 , and the other end abuts against the end surface of the boss 60 .

[0072] Preferably, a column rod 601 is provided on the end surface of the boss 60 for stabilizing the spring 63 .

[0073] Preferably, the end of the outer cylinder 64 is connected with a threaded ring 642 for connecting to an end cap 643 .

[0074] In summary, the beneficial effects of the present invention include providing a dot matrix pen with a simple structure, which enables the dot matrix pen to extend and retract the pen core by pressing to solve the problem of the pen cap being lost, and at the same time, the dot matrix pen can be turned on and off during the extension and retraction of the pen core to start and close the dot matrix pen.

[0075] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0076] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A dot matrix pen, comprising a housing (1), a bracket (2) and a pen core (3), characterized in that: A groove (21) is provided on the middle part of the outer side of the bracket (2), a strip groove (22) is provided at the bottom of the groove (21), a connecting piece (4) is slidably provided in the groove (21), an arc-shaped column head (41) is provided at one end of the connecting piece (4), the arc-shaped column head (41) protrudes from the lower end surface of the connecting piece (4) and is located and slidable in the strip groove (22); A switch (201) is arranged on the inner side of the bracket (2) located in front of the strip-shaped groove (22), and the arc-shaped column head (41) is used for closing the switch (201); The switch (201) comprises a housing (2011), two spaced-apart connecting sheets (2012), a V-shaped spring sheet (2013) and a rotating tongue (2014); One end of the connecting member (4) is connected to the pen core (3), and the other end of the connecting member (4) is connected to a connecting rod (5). The bracket (2) is provided with a pen core through groove (23) and a connecting rod through groove (24) on both sides of the groove (21). The pen core through groove (23) and the connecting rod through groove (24) are used for the axial movement of the pen core (3) and the connecting rod (5) respectively. The other end of the connecting rod (5) is connected to a pressing mechanism (6).

2. A dot matrix pen according to claim 1, characterized in that: The upper end surface of the connecting member (4) is provided with a semi-cylindrical groove (42), the end of the semi-cylindrical groove (42) is provided with a square hole (43) penetrating the connecting member (4), and the bottom of the semi-cylindrical groove (42) is provided with a circular limiting groove (421); at least two clamping protrusions (44) are provided on the end surface of the other side of the connecting member (4) opposite to the circular limiting groove (421); The upper end surface of the connecting member (4) is also provided with an L-shaped connecting hole (45), and the end surface of the connecting member (4) opposite to the L-shaped connecting hole (45) is provided with a square notch (46).

3. A dot matrix pen according to claim 2, characterized in that: A circuit board (20) is also installed inside the bracket (2), a pressure sensor (47) is installed in the square hole (43), the pressure sensor (47) is connected to the circuit board (20) via a flat cable (471), and the switch (201) is fixedly installed on the circuit board (20).

4. A dot matrix pen according to claim 3, characterized in that: The clamping protrusion (44) is clamped with a strip-shaped limiting plate (48).

5. A dot matrix pen according to claim 4, characterized in that: A core sleeve (422) is installed in the semi-cylindrical groove (42), and a limiting protrusion (423) is provided on the core sleeve (422).

6. A dot matrix pen according to claim 2, characterized in that: A boss (60) is provided at the end of the bracket (2), and the pressing mechanism (6) is provided on the boss (60). The pressing mechanism (6) comprises a button (61), a cam (62), a spring (63) and an outer cylinder (64). The end of the cam (62) is rotatably connected to a sleeve (65), and the connecting rod (5) is connected to the sleeve (65).

7. A dot matrix pen according to claim 6, characterized in that: The outer cylinder (64) is fixed to the boss (60) by means of screws, and a U-shaped notch (641) is provided on the outer cylinder (64).

8. A dot matrix pen according to claim 7, characterized in that: The sleeve (65) is a cylindrical sleeve, one end of which is provided with a plug (651) with a hole, and the sleeve (65) is rotatably connected to the end of the cam (62) by means of a screw.

9. A dot matrix pen according to claim 8, characterized in that: The spring (63) is plugged into the sleeve (65), one end of the spring (63) abuts against the seal (651), and the other end abuts against the end surface of the boss (60).

10. A dot matrix pen according to claim 9, characterized in that: A column rod (601) is arranged on the end surface of the boss (60).

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