CN214873826U - Passive electromagnetic water outlet pen - Google Patents

Abstract

A passive electromagnetic water outlet pen is characterized in that a pen core support is further arranged inside a pen shell, a first cavity and a second cavity are formed inside the pen core support, and a pen core clamp and a magnetic core are filled inside the second cavity; a first mounting groove and a second mounting groove are formed in the outer side of the refill support; the first mounting groove is provided with an inductance coil sleeved on the periphery of the refill support, and the second mounting groove is provided with an adjusting coil sleeved on the periphery of the refill support; the refill body passes through the first cavity, the tail end of the refill body extends into the second cavity from the first cavity and is clamped by the refill clamp, and the other end of the refill clamp is inserted into the magnetic core. The utility model discloses except that a fixed inductance coils fixes near the nib, utilize the relative motion of the adjusting coil of refill afterbody and magnetic core to realize the change of inductance, utilize the initial relative position of adjusting coil and magnetic core, realize the unanimous quick adjustment of initial frequency indirectly, be favorable to production, simple structure has avoided the loaded down with trivial details of traditional regulation electric capacity to take time.

Description

Passive electromagnetic water outlet pen

Technical Field

The utility model belongs to the technical field of the pen, concretely relates to passive electromagnetism goes out water pen.

Background

At present, passive electromagnetic pens in the market are divided into two types according to the types of pen cores, one type of plastic short pen head which can not discharge water is widely applied to the market of digital boards for art application, the other type of pen head is a water discharge pen, namely an ink pen core is used, better writing experience is achieved, and the passive electromagnetic pens are applied to paper pen interaction of online education. The existing passive pen has two ways of realizing pen pressure change, one is a way of changing inductance, and the other is a way of changing capacitance. The inductance variation method mainly comprises two schemes, namely, the inductance is changed by changing the relative position between a wound magnetic core and a non-wound magnetic core through the pressure movement of a pen point, and the inductance is changed by changing the relative position between the magnetic core and a coil wound on a solenoid through the movement of the pen point.

In the prior art, most of the conventional methods change the inductance by depending on the relative position of the non-winding magnetic core and the winding magnetic core, and the winding magnetic core is required to be close to a pen point of the pen core due to the fact that the pen core is long. Therefore, the technical scheme is realized by adopting a plurality of layers of sleeves, so that the diameter of the pen is thicker, or the pen is realized by three magnetic cores, and the structure is very complex. If the mode of relying on the relative motion of the magnetic core and the coil is adopted to change the inductance, the tail of the pen core drives the magnetic core sleeve, and the magnetic core sleeve drives the magnetic core principle coil, the position of the magnetic core and the position of the coil can be changed, so that the difference between the transmitting energy and the receiving sensitivity is caused. In addition, certain errors exist between the inductance of the wound magnetic core and the individual materials of the non-wound magnetic core. This results in a very poor initial frequency consistency of the pen, so all use is made to change the initial frequency by adjusting the capacitive configuration pads on the PCB. The efficiency and operability for mass production of production lines are very poor.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a passive electromagnetism goes out water pen to solve the loaded down with trivial details problem that wastes time of the big and regulation electric capacity of initial frequency control error between current passive electromagnetism pen structure complicacy, pen and the pen.

In order to achieve the above object, the present invention provides the following technical solutions: a passive electromagnetic water outlet pen comprises a pen shell, wherein a pen core body is arranged in the pen shell, a pen core outlet is formed in the end part of the pen shell, the writing end of the pen core body is exposed out of the pen core outlet, a pen core support is further arranged in the pen shell, a first cavity and a second cavity are formed in the pen core support, and a pen core clamp and a magnetic core are filled in the second cavity;

a first mounting groove and a second mounting groove are formed in the outer side of the refill support; the first mounting groove is provided with an inductance coil sleeved on the periphery of the refill support, the second mounting groove is provided with an adjusting coil sleeved on the periphery of the refill support, and the inductance coil is connected with the adjusting coil in series;

the refill body penetrates through the first cavity, the tail end of the refill body extends into the second cavity from the first cavity and is clamped by the refill clamp, and the other end of the refill clamp is inserted into the magnetic core.

As a preferred scheme of the passive electromagnetic water outlet pen, a spacing step positioned on the inner wall of the pen core support is formed between the first cavity and the second cavity, and the pen core clamp is limited in the second cavity by the spacing step.

As a preferable scheme of the passive electromagnetic water outlet pen, one end of the pen core support is blocked inside the pen shell by the pen core outlet, and the pen core support and the pen shell are coaxial.

As the preferred scheme of the passive electromagnetic water outlet pen, the refill clamp is a cylinder with steps and variable diameter, the diameter of the right end of the refill clamp is equal to the inner diameter of the interface on the magnetic core, and the right end of the refill clamp is inserted into the interface of the magnetic core.

As the preferred scheme of the passive electromagnetic water outlet pen, tower-shaped silica gel is further arranged inside the second cavity and is in contact with the end part of the magnetic core.

As a preferred scheme of the passive electromagnetic water outlet pen, a spring is further arranged inside the second cavity, and one end of the spring is sleeved on the periphery of the tower-shaped silica gel.

As a preferred scheme of the passive electromagnetic water outlet pen, a resonant circuit component is arranged inside the pen shell, and the resonant circuit component is screwed with one end of the pen core support through threads; the spring is limited in a closed space formed by the resonant circuit assembly and the cartridge support.

As a preferable scheme of the passive electromagnetic water outlet pen, a spare adjusting gap is formed after the adjusting coil is installed in the second installation groove.

The utility model has the advantages of as follows: a refill support is further arranged inside the pen shell, a first cavity and a second cavity are formed inside the refill support, and a refill clamp and a magnetic core are filled inside the second cavity; a first mounting groove and a second mounting groove are formed in the outer side of the refill support; the first mounting groove is provided with an inductance coil sleeved on the periphery of the refill support, and the second mounting groove is provided with an adjusting coil sleeved on the periphery of the refill support; the refill body passes through the first cavity, the tail end of the refill body extends into the second cavity from the first cavity and is clamped by the refill clamp, and the other end of the refill clamp is inserted into the magnetic core. The utility model discloses except that a fixed inductance coils fixes near the nib, utilize the relative motion of the adjusting coil of refill afterbody and magnetic core to realize the change of inductance, inductance coils and adjusting coil adopt series connection, and the structure is realized simplely to utilize the initial relative position of adjusting coil and magnetic core, realize the unanimous quick adjustment of initial frequency indirectly, be favorable to production, and simple structure has avoided the loaded down with trivial details of traditional regulation electric capacity to take time, has promoted product competitiveness.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic structural view of a passive electromagnetic water outlet pen provided in an embodiment of the present invention;

fig. 2 is a schematic circuit diagram of a passive electromagnetic water outlet pen provided in an embodiment of the present invention.

In the figure: 1. a pen housing; 2. a pen core body; 3. a cartridge outlet; 4. a cartridge holder; 5. a first cavity; 6. a second cavity; 7. a pen refill holder; 8. a magnetic core; 9. a first mounting groove; 10. a second mounting groove; 11. an inductor coil; 12. an adjustment coil; 13. spacing steps; 14. tower type silica gel; 15. a spring; 16. a resonant circuit component; 17. the gap is adjusted in a vacant way.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, a passive electromagnetic water outlet pen is provided, which includes a pen casing 1, a pen core body 2 is arranged inside the pen casing 1, a pen core outlet 3 is arranged at an end of the pen casing 1, a writing end of the pen core body 2 is exposed out of the pen core outlet 3, a pen core support 4 is further arranged inside the pen casing 1, a first cavity 5 and a second cavity 6 are formed inside the pen core support 4, and a pen core clamp 7 and a magnetic core 8 are filled inside the second cavity 6;

a first mounting groove 9 and a second mounting groove 10 are formed in the outer side of the refill support 4; the first mounting groove 9 is provided with an inductance coil 11 which is sleeved on the periphery of the refill support 4, the second mounting groove 10 is provided with an adjusting coil 12 which is sleeved on the periphery of the refill support 4, and the inductance coil 11 is connected with the adjusting coil 12 in series;

the refill body 2 penetrates through the first cavity 5, the tail end of the refill body 2 extends into the second cavity 6 from the first cavity 5 and is clamped by the refill clamp 7, and the other end of the refill clamp 7 is inserted into the magnetic core 8.

Specifically, the position of the inductance coil 11 is fixedly arranged at the writing end of the refill holder 4 close to the refill body 2, and is responsible for the emission and the reception of main electromagnetic waves. The change of the pressure feeling is generated by the magnetic core 8 placed at one end of the refill holder 7 under the condition that the relative displacement of the coil 12 is generated and adjusted by the pushing of the refill body 2.

Specifically, two leads of the inductance coil 11 and two leads of the adjusting coil 12 are connected in series to the circuit, the inductance coil 11 is connected in series, and the total inductance in the circuit system of the initial pen is indirectly adjusted by adjusting the position of the coil 12. The initial frequency of each pen is controlled within a range, and the consistency of the pressure feeling of the pens is ensured. So that the light and heavy feeling of the writing experience is consistent.

In this embodiment, a spacing step 13 located on the inner wall of the cartridge holder 4 is formed between the first cavity 5 and the second cavity 6, and the cartridge clip 7 is limited inside the second cavity 6 by the spacing step 13. An interval step 13 is arranged between the first cavity 5 and the second cavity 6, and a structure fixing position of the refill clamp 7 is guaranteed when the refill body 2 is not stressed.

In this embodiment, one end of the cartridge holder 4 is blocked by the cartridge outlet 3 inside the pen housing 1, and the cartridge holder 4 and the pen housing 1 are coaxial. The refill body 2 is a long refill for discharging ink, and the pen shell 1 protects an internal transmission mechanism and a circuit.

In this embodiment, the pen core clip 7 is a cylinder with steps and a diameter that changes, the diameter of the right end of the pen core clip 7 is equal to the inner diameter of the interface on the magnetic core 8, and the right end of the pen core clip 7 is inserted into the interface of the magnetic core 8. The inside of second cavity 6 still is equipped with tower type silica gel 14, tower type silica gel 14 contact the 8 tip of magnetic core. The inside of second cavity 6 still is equipped with spring 15, spring 15 one end cover is in the periphery of tower type silica gel 14. A resonant circuit component 16 is arranged in the pen shell 1, and the resonant circuit component 16 is screwed with one end of the pen core support 4 through threads; the spring 15 is confined in the enclosed space formed by the resonant circuit assembly 16 and the cartridge holder 4. The second mounting groove 10 is provided with a spare adjusting gap 17 after the adjusting coil 12 is mounted.

Specifically, the maximum diameter of the tower-shaped silica gel is the same as the diameter of the magnetic core 8 and is in close contact with the magnetic core, so that extrusion transmission of the tower-shaped silica gel and the magnetic core is ensured; an adjusting coil 12 is arranged on the outer diameter of the tail end of the refill support 4, a certain vacant adjusting gap 17 is formed in the installation position of the adjusting coil 12, and the vacant adjusting gap 17 is used for changing the position of the adjusting coil 12 to indirectly adjust the initial frequency.

Specifically, the refill body 2 and the refill clamp 7 are coaxial, the magnetic core 8 and the tower-shaped silica gel are coaxial, and the spring 15 is sleeved on the tower-shaped silica gel and is in a certain compression state, so that the refill clamp 7, the magnetic core 8 and the tower-shaped silica gel are extruded leftwards when the refill body 2 is not stressed, and the step round hole of the refill support 4 is used as a limit position.

Specifically, the tail end of the pen core support 4 is connected with the resonant circuit component 16 through threads; the resonant circuit assembly 16 includes a circuit board holder which mounts a circuit PCB having a resonant function to form a resonant circuit board; when the refill body 2 is stressed, the refill body 2 can press the refill support 4 to move rightwards; the refill holder 4 drives the magnetic core 8 to move rightwards; further driving the tower-shaped silica gel and the spring 15 to move towards the right side; the tail end of the refill support 4 and the circuit board support form a closed space through threaded connection, the circuit board support can provide a stroke limit moving rightwards, the total stroke of the magnetic core 8, the tower-shaped silica gel 14 and the spring 15 is limited, and the effect of fixing the moving stroke is achieved; when the magnetic core 8 moves rightwards, the relative position of the magnetic core and the adjusting coil 12 is changed, and the inductance of the stroke of the magnetic core and the adjusting coil is changed.

Specifically, the lead wires of the inductance coil 11 and the adjusting coil 12 are connected into the circuit system to form a series inductance circuit, and the series inductance circuit and the fixed capacitance travel resonance circuit on the resonance circuit board, and the calculation formula of the resonance frequency F is as follows:

wherein, F is the resonance frequency, L is the total inductance value of the inductor formed by the inductance coil 11, the regulating coil 12 and the magnetic core 8 in series, and C is the capacitance value of the capacitor on the resonance circuit board;

series equation of inductance: l ═ L1+ L2;

l1 is the inductance of the inductor coil 11, L2 is the inductance of the stroke between the adjusting coil 12 and the core 8, and the relative position between the adjusting coil 12 and the core 8 is determined according to the size of the inductance.

Since the winding of the inductance coil 11 is difficult to ensure the precision of the number of turns, and the magnetic core 8 also has a difference in magnetic permeability between the individual pieces in the manufacturing process, the total inductance value of each pen differs whether the inductance coil 11 or the inductance composed of the adjusting coil 12 and the magnetic core 8, so that the initial F is made equal by adjusting the capacitance in the circuit board in the conventional way. The operation steps are generally as follows, the resonance frequency is tested by the whole pen practical frequency tester, and then according to the difference value between the measured value and the target value, the capacitance value on the circuit board is manually changed by a worker. Or a plurality of capacitors with different sizes are welded on the circuit board, and the capacitors with different sizes are connected into or out of the circuit by selectively disconnecting or connecting different welding points, so that the same problem is achieved. The overall debugging efficiency is very slow. In the technical scheme, the initial total inductance value is indirectly adjusted by adjusting the position of the coil 12. The position of the coil is changed by hand while testing the frequency, so that F of each pen is equal, and the operation is quick and simple.

To sum up, the inside of the pen shell 1 of the utility model is also provided with a pen core support 4, the inside of the pen core support 4 is provided with a first cavity 5 and a second cavity 6, and the inside of the second cavity 6 is filled with a pen core clamp 7 and a magnetic core 8; a first mounting groove 9 and a second mounting groove 10 are formed in the outer side of the refill support 4; the first mounting groove 9 is provided with an inductance coil 11 which is sleeved on the periphery of the refill support 4, and the second mounting groove 10 is provided with an adjusting coil 12 which is sleeved on the periphery of the refill support 4; the refill body 2 penetrates through the first cavity 5, the tail end of the refill body 2 extends into the second cavity 6 from the first cavity 5 and is clamped by the refill clamp 7, and the other end of the refill clamp 7 is inserted into the magnetic core 8. The utility model discloses a fixed inductance coils 11 arranges near the nib and is responsible for the receiving and dispatching of electromagnetic energy, and relies on another regulating coil 12 and magnetic core 8's relative motion to change entire system's inductance value, does not need additionally to increase magnetic core 8 or other complicated structures to go to realize. Meanwhile, the position of the inductance coil 11 at the tip of the pen is fixed, so that the problem of non-uniformity of energy receiving and transmitting under the conditions of no stress and no stress of the pen tip is solved. And to how to revise because the initial frequency that the individual difference of material leads to is different, the utility model discloses initial position when utilizing magnetic core 8 not atress is unchangeable, and adjusting coil 12 adjustable in position's way adjusts initial entire system's inductance value for initial frequency control between pen and the pen is in the certain limit, has solved the loaded down with trivial details problem of wasting time of adjusting electric capacity, is favorable to production, and simple structure has avoided the loaded down with trivial details of traditional regulation electric capacity to waste time, has promoted product competitiveness.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (8)

1. A passive electromagnetic water outlet pen comprises a pen shell (1), wherein a pen core body (2) is arranged in the pen shell (1), a pen core outlet (3) is formed in the end portion of the pen shell (1), and the writing end of the pen core body (2) is exposed out of the pen core outlet (3), and the passive electromagnetic water outlet pen is characterized in that a pen core support (4) is further arranged in the pen shell (1), a first cavity (5) and a second cavity (6) are formed in the pen core support (4), and a pen core clamp (7) and a magnetic core (8) are filled in the second cavity (6);

a first mounting groove (9) and a second mounting groove (10) are formed in the outer side of the refill support (4); the first mounting groove (9) is provided with an inductance coil (11) which is sleeved on the periphery of the refill support (4), the second mounting groove (10) is provided with an adjusting coil (12) which is sleeved on the periphery of the refill support (4), and the inductance coil (11) is connected with the adjusting coil (12) in series;

the pencil core body (2) penetrates through the first cavity (5), the tail end of the pencil core body (2) extends into the second cavity (6) from the first cavity (5) and is clamped by the pencil core clamp (7), and the other end of the pencil core clamp (7) is inserted into the magnetic core (8).

2. A passive electromagnetic fountain pen according to claim 1, wherein a spacing step (13) is formed between the first (5) and second (6) chambers on the inner wall of the cartridge holder (4), the cartridge holder (7) being retained inside the second chamber (6) by the spacing step (13).

3. A passive electromagnetic fountain pen according to claim 2, wherein one end of the cartridge holder (4) is blocked inside the pen housing (1) by the cartridge outlet (3), the cartridge holder (4) and the pen housing (1) being coaxial.

4. A passive electromagnetic water outlet pen according to claim 1, characterized in that the cartridge holder (7) is a cylinder with steps and varying diameter, the diameter of the right end of the cartridge holder (7) is equal to the inner diameter of the interface on the magnetic core (8), and the right end of the cartridge holder (7) is inserted into the interface of the magnetic core (8).

5. A passive electromagnetic water outlet pen according to claim 4, characterized in that a tower-shaped silica gel (14) is further arranged inside the second cavity (6), and the tower-shaped silica gel (14) contacts the end of the magnetic core (8).

6. A passive electromagnetic water outlet pen according to claim 5, characterized in that a spring (15) is further arranged inside the second cavity (6), and one end of the spring (15) is sleeved on the periphery of the tower-shaped silica gel (14).

7. A passive electromagnetic water outlet pen according to claim 6, characterized in that the interior of the pen shell (1) is provided with a resonance circuit component (16), and the resonance circuit component (16) is screwed with one end of the pen core support (4); the spring (15) is limited in a closed space formed by the resonant circuit assembly (16) and the refill support (4).

8. A passive electromagnetic fountain pen according to claim 1, wherein a free adjustment gap (17) is formed after the adjustment coil (12) is mounted in the second mounting groove (10).

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