CN203931123U - Device for assisting user in writing - Google Patents

Abstract

The utility model discloses a device for assisting a user to write, which comprises a bracelet, a pen ring and a connecting mechanism, wherein the bracelet is sleeved on the hand of the user, the pen ring is sleeved on a writing pen, and the connecting mechanism is used for connecting the bracelet and the pen ring; the bracelet is provided with a sitting posture detection reminding mechanism; the sitting posture detection reminding mechanism comprises a sitting posture detection reminding circuit, and the sitting posture detection reminding circuit comprises a power supply U1, a switch K1, an infrared emitting tube Q1, an infrared receiving tube Q2, an LED lamp, resistors R1-R4, a capacitor C1, a potentiometer R5 and a comparator Q3. Through the technical scheme of the utility model, can alleviate because write the arm ache problem that the in-process held the pen hard and caused, can also write the in-process at the user and detect and remind user's the nonstandard position of sitting simultaneously.

Description

A device for assisting users in writing

technical field

The utility model relates to the field of teaching auxiliary equipment, in particular to a device for assisting users in writing.

Background technique

The proportion of primary school students with myopia is gradually increasing and showing a downward trend in age, which has become a common concern for parents. Therefore, many teaching auxiliary products have been produced, such as tables and chairs for students to correct sitting posture, special sitting posture correctors, or some wearable sitting posture reminders worn on the chest. These teaching auxiliary products help children solve the problem of poor sitting posture through different ways . However, the existing teaching auxiliary products are only passive reminders or compulsory corrections, which are easily resisted by children and cannot be persisted, resulting in the inability to truly solve the problem of children's sitting posture during learning.

According to the statistics, children’s sitting posture problems during learning include wrong way of holding the pen, too long writing time, bad posture, unconscious lowering of the head, dim light, etc. It is difficult to correct the correct sitting posture of children from one aspect. In addition, because the child's arm strength and wrist strength are relatively weak, writing for a long time will easily lead to sore wrists and fatigue, which will aggravate poor sitting posture or incorrect pen holding posture, and is not conducive to the child's health.

Utility model content

The purpose of this utility model is to provide a device for assisting users in writing, which can alleviate the problem of arm soreness caused by holding a pen forcefully during the writing process, and detect and remind the user's irregular sitting posture during the writing process.

For this purpose, the utility model adopts the following technical solutions:

A device for assisting users in writing, comprising a wristband for fitting on the user's hand, a pen loop for fitting on a writing pen, and a connection mechanism for connecting the wristband and pen loop, the wristband Equipped with a sitting posture detection and reminder mechanism;

The sitting posture detection reminder mechanism includes a sitting posture detection reminder circuit, and the sitting posture detection reminder circuit includes a power supply U1, a switch K1, an infrared emitting tube Q1 and an infrared receiving tube Q2, an LED light, resistors R1-R4, a capacitor C1, a potentiometer R5, Comparator Q3, where,

The output negative pole of U1 is connected to one end of K1, the other end of K1 is connected to one end of R5, one end of Q1, one end of Q2, one end of C1, and the ground end of Q3, and the positive output pole of U1 is connected to the VCC end of Q3, the other end of R5, one end of R1, one end of R2, and R3 One end, the positive pole of the LED light, the other end of R1 is connected to the other end of Q1, the other end of R2 is connected to the other end of Q2, the other end of C1, the negative input end of Q3, the sliding contact of R5 is connected to the positive input end of Q3, and the output end of Q3 is connected to The other end of R3, one end of R4, the other end of R4 is connected to the negative pole of the LED lamp;

When working, close the switch K1, and Q1 emits infrared rays of a certain frequency. When a user’s head enters the detection range of Q1, the infrared rays are reflected back and received by Q2, and the LED lights up after being compared by Q3.

Among them, it also includes lenses arranged at the front ends of Q1 and Q2 respectively for focusing.

Wherein, the resistance values of R1, R2 and R3 are all 10KΩ, the resistance value of R4 is 1KΩ, the maximum resistance value of R5 is 10KΩ, and the capacitance value of C1 is 104F.

Wherein, the Q3 is an LM393 dual voltage comparator.

Wherein, the connecting mechanism is made of elastic material.

Implementation of the utility model embodiment has the following beneficial effects:

The device for assisting users in writing of the utility model can limit the writing pen during the user's writing process through the bracelet on the user's hand, the pen ring on the writing pen, and the connecting mechanism connecting the bracelet and the pen ring. The relative position to the user's hand makes it easier for the user to hold the pen during writing, which reduces the soreness of the arm caused by long-term writing, and is also conducive to forming a good posture for holding the pen; further, the sitting posture detection reminder mechanism detects writing in real time Whether the user's head enters the detection range during the process is used to judge whether the user's sitting posture during the writing process is irregular. If so, the user will be reminded by the LED light.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings described below are only These are some embodiments of the present utility model. Those skilled in the art can also obtain other drawings based on these drawings without any creative work.

FIG. 1 is a schematic structural diagram of a device for assisting users in writing according to an embodiment of the present invention.

Fig. 2 is a circuit diagram of a sitting posture detection and reminding device for assisting users in writing according to an embodiment of the utility model.

Detailed ways

The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The first embodiment of the present utility model will be described in conjunction with FIG. 1 .

As shown in Figure 1, a device for assisting users in writing according to the first embodiment of the present utility model includes: a bracelet 1 for being placed on the user's hand, a pen ring 2 for being placed on the writing pen, and a A connection mechanism 3 connecting the bracelet 1 and the pen ring 2. The wristband 1 is provided with a sitting posture detection and reminding mechanism 4 with a predetermined detection range. When the user's head is detected within the detection range of the sitting posture detection and reminding mechanism, it can be determined that the sitting posture written by the user is not standardized, and the LED light is on to remind the user to correct the bad sitting posture.

Preferably, in this embodiment, the sitting posture detection and reminding mechanism 4 is arranged on the top of the wristband 1, so that the sitting posture detecting and reminding mechanism 4 is biased towards the face when the wristband 1 is in normal use. Nearly, the sitting position detection reminding mechanism 4 just can detect the user's head, and then controls the light on and off of the LED light. This method will not disturb the user and the people around him, and is convenient for promoting the application.

Further, the sitting posture detection reminder mechanism 4 in this embodiment includes a sitting posture detection reminder circuit, and the sitting posture detection reminder circuit includes a power supply U1, a switch K1, an infrared emitting tube Q1 and an infrared receiving tube Q2, an LED light 5, and a resistor R1- R4, capacitor C1, potentiometer R5, comparator Q3, among them, potentiometer R5 is a resistive element with three connection terminals and adjustable resistance, usually composed of a resistor body and a rotating or sliding system, that is, by a moving contact The point moves on the resistive body to obtain a partial voltage output.

In this embodiment, as shown in Figure 2, the output negative pole of U1 is connected to one end of K1, the other end of K1 is connected to one end of R5, one end of Q1, one end of Q2, one end of C1, and the ground end of Q3, and the positive output pole of U1 is connected to the VCC end of Q3, The other end of R5, one end of R1, one end of R2, one end of R3, the positive pole of LED lamp 5, the other end of R1 is connected to the other end of Q1, the other end of R2 is connected to the other end of Q2, the other end of C1, the negative input end of Q3, and the sliding contact of R5 The positive input terminal of Q3 is connected, the output terminal of Q3 is connected with the other end of R3 and one end of R4, and the other end of R4 is connected with the negative pole of LED lamp 5 .

In this embodiment, when the sitting posture detection reminder circuit is working, close the switch K1, and Q1 emits infrared rays of a certain frequency. When a user's head enters the detection range of Q1, the infrared rays are reflected back and received by Q2, and compared with Q3. Afterwards the LED light 5 lights up. Remind the user that there is a problem with the sitting posture, and then the detection distance can be adjusted through the potentiometer R5, the detection distance of the sitting posture detection and reminder mechanism 4 can be adjusted to 5-30cm, and the detection angle is a sector-shaped range of 30 degrees. For example, if the user bends down or bows his head during writing, the relative angle between the user's head and the bracelet 1 may fall into 0-30 degrees, and the relative distance is 5-30 cm. At this time, it can be judged that the user's current sitting posture for writing is incorrect. LED light 5 lights to remind the user.

Since infrared ranging is a relatively mature technology, many kinds of circuit principle designs can be realized, and detection can also be realized directly with the help of such modules as E18-D80NK. Therefore, all circuit forms cannot be exhaustively listed here. The sitting posture detection method of this scheme has the characteristics of little interference, easy assembly, convenient use, and the like.

Preferably, in this embodiment, the resistance values of R1, R2, and R3 are all 10KΩ, the resistance value of R4 is 1KΩ, the maximum resistance value of R5 is 10KΩ, and the capacitance value of C1 is 104F; Q3 selects LM393 dual voltage comparator with high gain, For broadband devices, when there is coupling between the output end and the input end due to parasitic capacitance, it is easy to generate oscillation; the voltage of the power supply U1 is a micro battery with a voltage drop of 5V. The parameters of the above-mentioned components are only a preferred embodiment of the present invention, and the present invention can also have other embodiments. For different application environments, those of ordinary skill in the technical field can, according to the common knowledge, do not need creative labor Adjust the component parameters.

Further, the device for assisting users in writing in this embodiment also includes lenses for focusing that are respectively provided at the front ends of Q1 and Q2. Use the focusing function of the lens to adapt to long-distance detection to increase the detection distance.

Further, the wristband 1 of this embodiment is also equipped with a photosensitive device, and when the user writes, when the ambient light intensity detected by the photosensitive device is not within the set range, the LED light is controlled to send a reminder signal. If the light is too dark or too bright, the user will be reminded, so that the user can adjust the light intensity of the writing environment in time to protect the eyes from damage.

Preferably, in order to improve the user's comfort, the connecting mechanism 3 in this embodiment is a connecting shaft made of elastic material, and the bracelet 1 is elastically connected to the pen ring 2 . The relative angle and the relative distance between the bracelet 1 and the pen ring 2 have a certain variation space, which increases the comfort during the writing process and makes the writing flexible.

Preferably, the wristband 1 in this embodiment can be designed as a ring that fits on the index finger, or a glove-type glove ring. In addition, the ring can also be extended to a ring structure that can wrap multiple fingers respectively, so as to achieve fixation. The purpose of the position of the wristband 1 in the user's hand. The material and shape of the bracelet 1 are not limited in the present invention.

Preferably, the size of the pen ring 2 in this embodiment can be adjusted to adapt to writing pens of different thicknesses, for example, the pen ring 2 can be made of elastic material. Because the pen ring 2 in the utility model is used to trap the structure of the writing pen in the writing process, this part preferably adopts a material with better flexibility, which can adapt to pens of different thicknesses and fix it, so as to increase the comfort in the writing process. would be too stiff.

Through the above-mentioned embodiment, the user can save more effort in holding the pen during the writing process, alleviate the problem of sore arms caused by long-time writing, and can also correct the posture of holding the pen; Myopia has a good effect; the utility model has high detection accuracy, relatively low implementation cost, and is easy to popularize.

What is disclosed above is only a preferred embodiment of the utility model, and of course it cannot limit the scope of the claims of the utility model. Therefore, any modifications, equivalent replacements and substitutions made within the spirit and principles of the utility model Improvements and the like still belong to the scope covered by the present utility model.

Claims (5)

1. A device for assisting users to write is characterized in that it includes a wristband (1) for being placed on the user's hand, a pen ring (2) for being placed on the writing pen, and a wristband for connecting the hand Ring (1) and pen ring (2) connecting mechanism (3), described wristband (1) is provided with sitting posture detection reminding mechanism (4); The sitting posture detection reminder mechanism (4) includes a sitting posture detection reminder circuit, and the sitting posture detection reminder circuit includes a power supply U1, a switch K1, an infrared emitting tube Q1 and an infrared receiving tube Q2, an LED lamp (5), resistors R1-R4, and a capacitor C1, potentiometer R5, comparator Q3, among them, The output negative pole of U1 is connected to one end of K1, the other end of K1 is connected to one end of R5, one end of Q1, one end of Q2, one end of C1, and the ground end of Q3, and the positive output pole of U1 is connected to the VCC end of Q3, the other end of R5, one end of R1, one end of R2, and R3 One end, the positive pole of the LED lamp (5), the other end of R1 is connected to the other end of Q1, the other end of R2 is connected to the other end of Q2, the other end of C1, and the negative input end of Q3, the sliding contact of R5 is connected to the positive input end of Q3, and the The output end is connected to the other end of R3 and one end of R4, and the other end of R4 is connected to the negative pole of the LED lamp (5); When working, close the switch K1, and Q1 emits infrared rays of a certain frequency. When a user's head enters the detection range of Q1, the infrared rays are reflected back and received by Q2, and the LED (5) lights up after being compared by Q3. 2 . The device for assisting users in writing according to claim 1 , further comprising lenses respectively arranged at the front ends of Q1 and Q2 for focusing. 3 . 3. The device for assisting users in writing according to claim 1, wherein the resistance values of R1, R2, and R3 are all 10KΩ, the resistance value of R4 is 1KΩ, the maximum resistance value of R5 is 10KΩ, and the capacitance value of C1 is 104F . 4. The device for assisting users in writing according to claim 1, wherein the Q3 is an LM393 dual voltage comparator. 5. The device for assisting users in writing according to claim 1, characterized in that, the connecting mechanism (3) is made of elastic material.