Stepped three-point type posture correcting pen

Abstract

The utility model discloses a step-shaped three-point type posture correcting pen which comprises a refill, a pen container, a container cap, a refill sleeve inserted in the pen container, a linkage piece arranged at the lower end of the refill sleeve and matched with the lower section of the refill in a clamping mode or a clamping mode, and a reset mechanism arranged in the pen container and capable of pushing the refill sleeve and the refill to reset upwards. The lower section of the pen container is provided with three trigger mechanisms capable of driving the core sleeve to slide downwards through the linkage piece, and the three trigger mechanisms are sequentially arranged in the circumferential direction of the pen container at intervals according to the regular pen holding posture positions of the thumb, the index finger and the middle finger and are also sequentially arranged in the axial direction at intervals. The pen container has the advantages that a user can be assisted in holding the pen container according to a step-shaped three-point type posture, the non-standard pen holding posture of the user can be forcibly corrected, pen holding is comfortable, and the writing speed and the writing attractiveness can be improved; and the user can quickly and accurately find the corresponding positions of three fingers and three pressing points, so that the use convenience is improved.

Description

Technical Field

[0001] The utility model patent application relates to a stepped three-point posture correction pen, belonging to the field of stationery or tool pens. Background Art

[0002] A pen is a special tool for writing, and it is also a lifelong partner for people to learn. However, many people do not know the correct posture for holding a pen, which causes sore hands when writing, which in turn leads to slow and ugly writing, and in severe cases, it can lead to a dislike for learning. Therefore, cultivating the correct pen-holding posture from an early age will not only make writing easy and smooth, but also help to write beautiful fonts. The pen is held with the thumb, index finger and middle finger, but due to the different lengths of the thumb, index finger and middle finger, the points where they are pressed on the pen not only differ greatly in the outer circumference of the pen, but also in the long axis. At present, there is no pen on the market that can accurately limit the landing point of the above three fingers or accurately correct the posture.

[0003] At present, the traditional pen mainly includes a pen core, a pen barrel and a barrel cover. The pen barrel is the main component of the hand, which is generally cylindrical. This kind of pen has no problem for people who have mastered the correct pen-holding posture, but it has no effect on correcting the pen-holding posture for school-age children. There is also a pen on the market, the lower part of which is a triangular prism, which just provides three corresponding force points for the thumb, index finger and middle finger to hold the pen, and has a certain circumferential auxiliary correction of the pen-holding posture, but has no axial auxiliary correction function, so it is not suitable for school-age children. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a kind of stepped three-point posture correction pen with reasonable structure, which can assist the user to grasp the pen holder in a stepped three-point posture, can forcibly correct the user's irregular pen-holding posture, and is comfortable to hold the pen, which helps to improve the writing speed and the beauty of writing; it can also allow the user to quickly find the corresponding positions of three fingers and the three pressing points, thereby improving the convenience of use; it has strong versatility and good specificity.

[0005] In order to solve the above technical problems, the present patent application includes a pen barrel that can be fitted with a refill, and a barrel cap that matches the refill head of the refill is installed at the lower end of the pen barrel, and its structural characteristics are: a core sleeve that matches the refill sleeve is slidably inserted in the pen barrel, and a linkage piece that is card-fitted or clamped with the lower section of the refill is provided at the lower end of the core sleeve, and the core sleeve can push the refill to move downward through the linkage piece under the action of an external force; it also includes a reset mechanism that can push the core sleeve and the refill to reset upward; the lower section of the pen barrel is provided with three trigger mechanisms that can drive the core sleeve to slide downward through the linkage piece, and the three trigger mechanisms are arranged in sequence in the circumferential direction of the pen barrel according to the regular pen-holding posture of the thumb, index finger and middle finger, and are also arranged in sequence in the axial direction; when the thumb, index finger and middle finger are pressed on the three trigger mechanisms respectively, the trigger mechanism will push the lower part of the core head out of the barrel cap through the core sleeve and the linkage piece; when the thumb, index finger and middle finger are separated from the three trigger mechanisms, the reset mechanism pushes the core sleeve, the refill and the trigger mechanism to reset, and the core head is hidden in the barrel cap.

[0006] As an implementation method, the linkage part includes an outer convex ring fixedly connected to the lower section of the core sleeve, the lower end surface of the outer convex ring is limitedly clamped with the upper end surface of the clamp at the lower section of the pen core, and the upper end surface of the outer convex ring is press-fitted with the lower end of the trigger mechanism; the reset mechanism includes a spring sleeved on the core head, the upper end of the spring is press-fitted with the lower end surface of the clamp, and the lower end of the spring is press-fitted with the inner wall of the barrel cap.

[0007] As an implementation method, the trigger mechanism includes a long strip of spring sheet, which includes an arc section arranged at both ends and an extension section smoothly connected to the lower end of the arc section. A pressing hole corresponding to the spring sheet is provided on the pen barrel, and the pressing hole extends from the middle of the arc section of the spring sheet, and the extension section of the spring sheet extends to the inner cavity of the pen barrel. A hole groove is provided on the upper hole wall of the pressing hole, which is limited by the upper end of the arc section, and the lower end of the spring sheet is pressed and matched with the outer convex ring of the lower section of the core sleeve.

[0008] As another implementation method, the linkage part includes a claw fixedly connected to the lower end of the core sleeve, and the claw is a plurality of clamping rings arranged at intervals around the pen core and clamping the outer wall of the pen core; the inner wall of the lower end of the pen barrel is a cone with a thick top and a thin bottom and forms a sliding fit with the lower edge of the outer wall of the clamping ring.

[0009] As an implementation method, the trigger mechanism includes a spring piece, which is in the shape of a long strip and the middle part of which is bent along a V-shaped trajectory. A pressing hole corresponding to the spring piece is provided on the pen barrel, and the pressing hole extends from the middle part of the spring piece. The upper and lower sections of the spring piece extend into the inner cavity of the pen barrel; an inner convex ring is provided on the inner wall of the middle section of the pen barrel, which is limitedly matched with the upper end of the spring piece, and an outer convex ring is fixedly connected to the lower section of the core sleeve to press and match with the lower end of the spring piece.

[0010] As an implementation method, the reset mechanism includes an upper convex ring fixedly connected to the upper end of the core sleeve, and also includes an elastic spring sleeved on the upper part of the core sleeve, the upper end of the elastic spring is elastically pressed and fitted with the lower end surface of the upper convex ring, and the lower end of the elastic spring is elastically pressed and fitted with the upper end surface of the inner convex ring.

[0011] As an improvement, the three spring pieces are respectively a thumb piece corresponding to the thumb, an index piece corresponding to the index finger, and a middle piece corresponding to the middle finger; the part of the spring piece extending out of the pressing hole is a convex part; in the length direction of the pen holder, the convex part of the thumb piece, the convex part of the index piece and the convex part of the middle piece are arranged at intervals of upper, middle and lower relative heights; the height difference between the convex part of the thumb piece and the convex part of the index piece is called the upper height, and the height difference between the convex part of the index piece and the convex part of the middle piece is called the lower height, and the lower height is 5-10 times the upper height.

[0012] As a further improvement, an elastic pad is fixedly connected to the convex portion of the spring piece, and the color of the elastic pad of the thumb piece is different from the color of the elastic pads on the food piece and the middle piece.

[0013] As an implementation method, according to the habit of holding a pen with the right hand, the thumb piece, the index piece and the middle piece are arranged at intervals on the outer circumference of the pen holder in a clockwise direction as viewed from a top view.

[0014] As another implementation method, according to the habit of holding a pen with the left hand, the thumb piece, the index piece and the middle piece are arranged at intervals on the outer circumference of the pen holder in a counterclockwise direction as viewed from a top view.

[0015] To sum up, the stepped three-point posture correction pen with this structure has a reasonable structure, can assist the user to grasp the pen holder according to the stepped three-point posture, can forcibly correct the user's irregular pen-holding posture, and is comfortable to hold the pen, which helps to improve writing speed and writing beauty; it can also allow the user to quickly find the corresponding positions of the three fingers and the three pressing points, thereby improving the convenience of use; it can also select a suitable pen holder according to the different sizes of the user's palms or finger lengths, with strong versatility and good specificity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present patent application is further described in detail with reference to the accompanying drawings:

[0017] Figure 1 This is a diagram of the correct pen-holding posture;

[0018] Figure 2 This is a schematic diagram of the appearance of the first embodiment;

[0019] Figure 3 It is a structural schematic diagram of the natural state of implementation mode 1;

[0020] Figure 4 It is a structural schematic diagram of the outer convex ring in the first embodiment;

[0021] Figure 5 It is a structural schematic diagram of the clamping ring in the first embodiment;

[0022] Figure 6 It is a structural schematic diagram of the writing state of implementation mode 1;

[0023] Figure 7 This is a structural schematic diagram of the natural state of the second implementation mode;

[0024] Figure 8 This is a structural schematic diagram of the writing state of implementation mode 2;

[0025] Fig. 9 It is a schematic structural diagram of the pen core in the second embodiment. DETAILED DESCRIPTION

[0026] Implementation

[0027] like Figure 1-6As shown, in this embodiment, the stepped three-point posture correction pen includes a pen barrel 2 that can be fitted with a pen core 1, and a barrel cap 3 that is fitted with a core head 0 of the pen core is installed at the lower end of the pen barrel. A core sleeve 4 that is fitted with the pen core is inserted and slidably inserted in the pen barrel, and a linkage piece that is fitted or clamped with the lower section of the pen core is provided at the lower end of the core sleeve. Under the action of external force, the core sleeve can push the pen core downward through the linkage piece. This embodiment also includes a reset mechanism that can push the core sleeve and the pen core upward to reset. The lower section of the pen barrel is provided with three trigger mechanisms that can drive the core sleeve to slide downward through the linkage piece. The three trigger mechanisms are arranged in sequence in the circumferential direction of the pen barrel according to the regular pen holding posture positions of the thumb, index finger and middle finger, and are also arranged in sequence in the axial direction. When the thumb, index finger and middle finger are pressed on the three trigger mechanisms respectively, the trigger mechanism will push the lower part of the core head out of the barrel cap through the core sleeve and the linkage piece. When the thumb, index finger and middle finger are separated from the three trigger mechanisms, the reset mechanism pushes the core sleeve, the pen core and the trigger mechanism to reset, and the core head is hidden in the barrel cap. This embodiment mainly uses a stepped three-point structure to assist the user to grasp the pen holder in a stepped three-point posture, which can forcibly correct the user's irregular pen-holding posture, make the pen comfortable, and help improve the writing speed and the beauty of writing; it can also allow the user to quickly find the corresponding positions of the three fingers and the three pressing points, which improves the convenience of use; it can also select a suitable pen holder according to the different sizes of the user's palms or finger lengths, with strong versatility and good specificity. For the convenience of description, the end where the core head of the pen core is located when writing is called the lower end, and the other end is called the upper end. The stepped three-point structure mainly refers to that the number of trigger mechanisms set on the pen holder is three, and the three trigger mechanisms correspond to the thumb, index finger and middle finger one by one, so that when holding the pen, a three-finger pen holding or three-point pen holding posture is formed, which conforms to the regular pen holding posture. In addition, the positional relationship of the three trigger mechanisms on the periphery of the pen barrel is that they are arranged around the pen barrel, or in other words, they are arranged in sequence in the circumferential direction, and the interval angles are the same, that is, the three trigger mechanisms are evenly distributed on the periphery of the pen barrel, that is, the angle between any two trigger mechanisms in the circumferential direction is 120 degrees. In addition, the positional relationship of the three trigger mechanisms on the periphery of the pen barrel in the axial direction is that they are also arranged in sequence in the axial direction. In actual production, the interval distance or size can be set in proportion to the size of the human hand to meet the requirements of comfortable use. In this patent application, in addition to the pen barrel, the pen core and the barrel cap, which are all parts of traditional pens, a core sleeve is also provided. The core sleeve is inserted in the pen barrel and is slightly thinner than the inner cavity of the pen barrel, so that the core sleeve can slide and rotate freely in the pen barrel. A linkage member is provided at the lower end of the core sleeve, and the main function of the linkage member is to fit or clamp with the lower section of the pen core, and to receive the driving force of the trigger mechanism and transmit the force to the pen core at the same time, thereby playing the role of transmitting force or linkage. In this way, when the trigger mechanism is pressed by a finger, the trigger mechanism applies a downward external force to the linkage member, and the core sleeve pushes the pen core downward through the linkage member, that is, pushes the core head of the pen core to expose the barrel cap, so that writing can be carried out.This patent application also includes a reset mechanism set in the pen barrel. The main function of the reset mechanism is to push the core sleeve and the pen core to automatically move upward to the initial position when the finger leaves the trigger mechanism, that is, when the linkage member loses the downward external force, so as to reset the core sleeve and retract the core head of the pen core back into the barrel cap. It should be noted that only when the thumb, index finger and middle finger are pressed on the three trigger mechanisms correspondingly can the pen barrel be held, the correct and sufficient force can be applied to the trigger mechanism, and the linkage member can be triggered to drive the core head to be exposed, so as to write. In other words, as long as one finger does not press the right position, the finger cannot effectively hold the pen barrel. Even if the pen barrel is held, the correct and sufficient force cannot be applied to the trigger mechanism, and the core head cannot be triggered to be exposed, so writing is impossible. In this way, the automatic posture correction or forced posture correction function of "writing can only be done if the pen is held correctly, and writing cannot be done if the pen is held incorrectly or the hand is loosened" is realized.

[0028] In this embodiment, the linkage member includes a claw 14 fixed to the lower end of the core sleeve, and the claw is a plurality of clamping rings 15 arranged at intervals around the pen core and forming a clamping ring 15 for clamping the outer wall of the pen core; the inner wall of the lower end of the pen barrel is a cone with a thick upper part and a thin lower part, and forms a sliding fit relationship with the lower edge of the outer wall of the clamping ring. In this patent application, the linkage member can also be composed of a claw. The claw is a column extending downward, which can be a prism or a cylinder. The upper end of the claw is fixed to the lower end of the core sleeve, and the lower end of the claw is suspended, so the lower end of the claw can swing inward after receiving the force from the outside, which is equivalent to the claw having a certain elasticity. The number of claws is multiple, and they are arranged in annular intervals along the annular track at the end of the core sleeve. Therefore, the multiple claws form a ring-arranged clamping ring as a whole, the upper end of the clamping ring is fixed to the core sleeve, and the lower end of the clamping ring is suspended. In this patent application, the inner diameter of the lower section of the clamping ring is slightly smaller than the outer diameter of the pen core, so after the pen core is inserted into the core sleeve, the lower section of the pen core will be elastically clamped by the lower section of the clamping ring. In this way, the pen core and the core sleeve form an integrated structure of clamping fit. When the core sleeve moves downward, it will push the pen core to move downward, and when the pen core moves upward, it will push the core sleeve to reset. In this patent application, the inner wall of the lower section of the pen barrel corresponding to the snap ring is a cone with a thick upper part and a thin lower part. For the convenience of description, this section of the inner cavity is called a conical cavity. The upper end of the conical cavity is thicker than the outer diameter of the lower end of the snap ring, so it can accommodate the lower section of the snap ring. The lower end of the conical cavity is thinner than the outer diameter of the lower end of the snap ring. Therefore, when the trigger mechanism drives the snap ring to move downward, the inner wall of the conical cavity will form an extrusion force on the outer wall of the snap ring and force the snap ring to further clamp the pen core. In this way, when the core head of the pen core is exposed from the barrel cap, the clamping force of the snap ring on the pen core reaches the maximum, ensuring that the core head will not retract during writing, and it is more reliable to use.

[0029] In this embodiment, the trigger mechanism includes a spring piece 7, which is in the shape of a long strip, the middle of which is bent along a V-shaped track, a pressing hole 8 corresponding to the spring piece is provided on the pen barrel, the middle of the spring piece extends out of the pressing hole, and the upper and lower sections of the spring piece extend into the inner cavity of the pen barrel; an inner convex ring 9 is provided on the inner wall of the middle section of the pen barrel to limit the upper end of the spring piece, and an outer convex ring 10 is fixedly connected to the lower section of the core sleeve to press and cooperate with the lower end of the spring piece. In this patent application, the trigger mechanism is composed of spring pieces, which are in the shape of a long strip plate, the middle of which extends along a V-shaped track, and is in the shape of a "J" or "Ω" as a whole. The trigger mechanism also includes a pressing hole provided on the pen barrel, the bent part in the middle of the spring piece is accommodated in the pressing hole, and the protruding part in the middle of the spring piece extends out of the pressing hole for easy finger pressing. Because an inner cavity is provided between the inner wall of the pen barrel and the outer wall of the core sleeve, the upper and lower sections of the spring piece extend upward and downward into the inner cavity of the pen barrel respectively. In the present patent application, an inner convex ring is provided on the inner wall of the middle section of the pen barrel, and the inner convex ring is limitedly matched with the upper end of the spring sheet to provide downward supporting force for the spring sheet. An outer convex ring is fixedly connected to the lower section of the core sleeve, and the outer convex ring is pressed and matched with the lower end of the spring sheet. In this way, when the finger presses the protruding part of the spring sheet into the pen barrel, the spring sheet will become longer. Since the upper end of the spring sheet is blocked by the inner convex ring, the spring sheet can only squeeze the outer convex ring at the lower end to move downward, that is, drive the core sleeve to move downward, that is, drive the core head of the pen core to expose the barrel cap through the linkage, so as to write. When the finger is released, the spring sheet automatically resets under the action of its own elastic force.

[0030] In this embodiment, the reset mechanism includes an upper convex ring 17 fixed to the upper end of the core sleeve, and also includes an elastic spring 16 sleeved on the upper section of the core sleeve, the upper end of the elastic spring is elastically pressed and matched with the lower end face of the upper convex ring, and the lower end of the elastic spring is elastically pressed and matched with the upper end face of the inner convex ring. In this patent application, the reset mechanism is mainly composed of an upper convex ring and an elastic spring, wherein the upper convex ring is fixed to the upper end of the core sleeve and is arranged in a cavity between the outer wall of the core sleeve and the inner wall of the pen barrel. The elastic spring is sleeved on the core sleeve between the upper convex ring and the inner convex ring, the upper end of the elastic spring is elastically pressed and matched with the lower end face of the upper convex ring, and the lower end of the elastic spring is elastically pressed and matched with the upper end face of the inner convex ring. Therefore, the function of the elastic spring is to pull the pen core upward through the core sleeve, that is, to retract the pen core head back to the barrel cap when the extrusion force of the shrapnel is lost.

[0031] In this embodiment, the three spring pieces are respectively a thumb piece corresponding to the thumb, an index finger piece corresponding to the index finger, and a middle finger piece corresponding to the middle finger; the portion of the spring piece extending out of the pressing hole is a convex portion; in the length direction of the pen holder, the convex portion of the thumb piece, the convex portion of the index finger piece, and the convex portion of the middle finger piece are arranged at intervals according to the relative height of the upper, middle, and lower parts; the height difference between the convex portion of the thumb piece and the convex portion of the index finger piece is called the upper height, and the height difference between the convex portion of the index finger piece and the convex portion of the middle finger piece is called the lower height, and the lower height is 5-10 times the upper height. In this patent application, the arrangement of the three spring pieces on the periphery of the pen holder is not only arranged around the pen holder in the circumferential direction, but also has requirements in the axial direction. According to the length of human fingers and the natural pen-holding posture: first, the thumb, index finger, and middle finger are short in length, followed by the index finger, and the middle finger is the longest; second, when holding a pen, subject to the first restriction, the thumb is the top, followed by the index finger, and the middle finger is the bottom. Therefore, the three spring pieces are not at the same height, but are arranged in order from top to bottom according to the convex part of the thumb piece, the convex part of the food piece and the convex part of the middle piece. Specifically, the height difference between the convex part of the thumb piece and the convex part of the food piece is called the upper height, and the height difference between the convex part of the food piece and the convex part of the middle piece is called the lower height, and the lower height is 5-10 times the upper height. After this arrangement, not only is it more natural and comfortable to hold the pen, but it also helps to improve writing speed and aesthetics.

[0032] In this embodiment, an elastic pad 18 is fixedly connected to the convex part of the spring sheet, and the color of the elastic pad of the thumb piece is different from the color of the elastic pad on the food piece and the middle piece. In this patent application, an elastic pad is fixedly connected to the convex part of the spring sheet, and the main function of the elastic pad is to improve the touch and comfort when pressing the spring sheet, especially when writing for a long time, this advantage is more prominent. In addition, in this patent application, the color of the elastic pad of the thumb piece is different from the color of the elastic pad on the food piece and the middle piece. For example, the elastic pad of the thumb piece is red, and the elastic pad of the food piece and the elastic pad of the middle piece are blue. After such a setting, the user can quickly find the corresponding relationship between the three fingers and the three spring sheets, thereby improving the efficiency of writing.

[0033] In this embodiment, according to the habit of holding a pen with the right hand, the thumb piece, the food piece and the middle piece are arranged at intervals in the clockwise direction of the top view angle on the outer periphery of the pen holder. People can be divided into right-handed and left-handed according to their writing habits. In this patent application, the thumb piece, the food piece and the middle piece are arranged at intervals in the clockwise direction of the top view angle on the outer periphery of the pen holder, which is mainly convenient for people who hold a pen with the right hand to use, and has stronger specialization.

[0034] In this embodiment, according to the habit of holding a pen with the left hand, the thumb piece, the food piece and the middle piece are arranged at intervals in the counterclockwise direction of the top view angle on the outer circumference of the pen barrel. The thumb piece, the food piece and the middle piece are arranged at intervals in the counterclockwise direction of the top view angle on the outer circumference of the pen barrel, and this arrangement is mainly convenient for people who hold the pen with the left hand. In this way, people with the habit of holding the pen with the left or right hand can use this patent application to correct the pen holding posture, and the versatility is stronger.

[0035] Implementation

[0036] like Figure 7-9 As shown, the difference between this embodiment and the first embodiment is that the linkage member includes an outer convex ring 10 fixedly connected to the lower section of the core sleeve, the lower end face of the outer convex ring is limited and clamped with the upper end face of the clamp 5 of the lower section of the pen core, and the upper end face of the outer convex ring is pressed and matched with the lower end of the trigger mechanism; the reset mechanism includes a spring 6 sleeved on the core head, the upper end of the spring is pressed and matched with the lower end face of the clamp, and the lower end of the spring is pressed and matched with the inner wall of the barrel cap. In this patent application, the linkage member is mainly composed of an outer convex ring. The outer convex ring is also an annular structure set on the pen core, set in the lower section of the core sleeve, and the outer convex ring and the core sleeve are fixed as an integral structure. In this patent application, the lower end face of the outer convex ring is limited and clamped with the upper end face of the clamp of the lower section of the pen core, so when the outer convex ring is forced to move downward, it will push the clamp and the pen core to move downward, and when the pen core is forced to move upward, it will also push the outer convex ring to move upward, and the two form a linkage relationship. In this patent application, the reset mechanism is mainly composed of a spring, and the spring is sleeved on the core head. The upper end of the spring forms a press fit with the lower end surface of the clamp, and the lower end of the spring forms a press fit with the inner wall of the barrel cap. When the trigger mechanism is pressed, the trigger mechanism compresses the spring through the linkage and the clamp, thereby pushing the core head of the pen core out of the barrel cap for writing. When the finger is released, the spring rebounds, and the pen core, core sleeve and trigger mechanism are reset.

[0037] In this embodiment, the trigger mechanism includes a long strip of spring sheet 7, which includes an arc segment 11 arranged at both ends and an extension segment 12 connected to the lower end of the arc segment in a smooth downward transition; a pressing hole 8 corresponding to the spring sheet is provided on the pen barrel, and the pressing hole extends from the middle of the arc segment of the spring sheet, and the extension segment of the spring sheet extends to the inner cavity of the pen barrel; a hole groove 13 is provided on the upper hole wall of the pressing hole to limit the upper end of the arc segment, and the lower end of the spring sheet is pressed and matched with the outer convex ring of the lower section of the core sleeve. In this patent application, the trigger mechanism is mainly composed of three parts, namely: spring sheet, pressing hole and hole groove. Among them, the spring sheet is the main part of the trigger mechanism, and the spring sheet is long strip as a whole, consisting of an arc segment and an extension segment. The arc segment is a curved plate with a semicircular curved plate surface, which is elastic, so when the middle of the arc segment is pressed inward, it will elastically narrow and lengthen, and will automatically reset when the force is removed. The extension section is a long strip fixed to the lower end of the arc section and smoothly extending downward, and has a certain hardness. When the middle part of the arc section is pressed inward, the arc section becomes longer and its lower end will push the extension section to move downward, that is, push the linkage and the core head to move downward. When the pressing force is lost, the extension section will automatically reset upward. In this patent application, the pressing hole is arranged around the pen barrel and is arranged through the inside and outside of the pen barrel. A hole groove is arranged on the upper hole wall of the pressing hole, and the arc section of the spring is arranged in the pressing hole. The upper end of the arc section is inserted into the hole groove and cooperates with the hole groove limit, which can prevent the spring from detaching from the pressing hole during the pressing process, thereby ensuring the reliability of use. The middle part of the arc section extends to the outside of the pressing hole, so that it is convenient for fingers to press it. The extension section of the spring extends from the inside of the pen barrel into the cavity between the inner wall of the pen barrel and the outer wall of the core sleeve, and the lower end of the extension section cooperates with the linkage member for pressing transmission. In this way, when the pen is held correctly, the middle of the arc section of the spring is pressed into the pressing hole by the finger, the arc section becomes longer, and the upper end of the arc section is limited by the hole groove to press the extension section downward, and then the extension section compresses the spring through the linkage and pushes the core head out of the barrel cap, so that writing can be carried out. When the hand is released, the spring pushes the pen core back into the pen barrel through the linkage, and the arc section automatically resets.

[0038] In this embodiment, the barrel cap and the pen barrel can be either a two-body structure or a one-body structure, and the working principles are similar, which will not be repeated here.

Claims

1. A stepped three-point posture correction pen, comprising a pen holder (2) capable of being fitted with a pen core (1), a cap (3) fitted with a core head (0) of the pen core (1) being mounted at the lower end of the pen holder (2), wherein: A core sleeve (4) which is fitted with the pen core (1) is slidably inserted in the pen barrel (2), and a linkage piece which is fitted or clamped with the lower section of the pen core is provided at the lower end of the core sleeve (4), and the core core can push the pen core downward through the linkage piece under the action of an external force; and a reset mechanism which is arranged in the pen barrel and can push the core sleeve and the pen core upward is also provided; the lower section of the pen barrel (2) is provided with three trigger mechanisms which can drive the core sleeve to slide downward, and the three trigger mechanisms are arranged in sequence in the circumferential direction of the pen barrel according to the positions of the thumb, index finger and middle finger in the normal pen holding posture, and are also arranged in sequence in the axial direction; when the thumb, index finger and middle finger respectively press on the three trigger mechanisms, the trigger mechanisms will push the core head out of the barrel cap through the core sleeve and the linkage piece; when the thumb, index finger and middle finger are separated from the three trigger mechanisms, the reset mechanism pushes the core sleeve, the pen core and the trigger mechanism to reset, and the core head is hidden in the barrel cap.

2. The stepped three-point posture correction pen according to claim 1, characterized in that: The linkage member comprises an outer convex ring (10) fixedly connected to the lower section of the core sleeve, the lower end surface of the outer convex ring being limitedly clamped and fitted with the upper end surface of the clamp (5) of the lower section of the pen core, and the upper end surface of the outer convex ring being pressed and fitted with the lower end of the trigger mechanism; the reset mechanism comprises a spring (6) sleeved on the core head (0), the upper end of the spring (6) being pressed and fitted with the lower end surface of the clamp (5), and the lower end of the spring (6) being pressed and fitted with the inner wall of the barrel cap.

3. The stepped three-point posture correction pen according to claim 2, characterized in that: The trigger mechanism comprises a long strip of spring sheet (7), the spring sheet (7) comprising an arc section (11) arranged at two ends, and an extension section (12) smoothly transitioning downwardly from the lower end of the arc section; a pressing hole (8) corresponding to the spring sheet is provided on the pen holder (2), the pressing hole extends from the middle of the arc section of the spring sheet, and the extension section of the spring sheet extends into the inner cavity of the pen holder; a hole groove (13) is provided on the upper hole wall of the pressing hole, which is limitedly matched with the upper end of the arc section, and the lower end of the spring sheet is pressed and matched with the outer convex ring of the lower section of the core sleeve.

4. The stepped three-point posture correction pen according to claim 1, characterized in that: The linkage member comprises a claw (14) fixedly connected to the lower end of the core sleeve, the claw being a plurality of clamping rings (15) arranged at intervals around the pen core and clamping the outer wall of the pen core; the inner wall of the lower end of the pen barrel is a conical shape with a thick top and a thin bottom, and forms a sliding fit relationship with the lower edge of the outer wall of the clamping ring.

5. The stepped three-point posture correction pen according to claim 4, characterized in that: The trigger mechanism comprises a spring piece (7), which is in the shape of a long strip and the middle part of which is bent along a V-shaped track. A pressing hole (8) corresponding to the spring piece is provided on the pen barrel (2), the middle part of the spring piece extends out of the pressing hole, and the upper and lower parts of the spring piece extend into the inner cavity of the pen barrel; an inner convex ring (9) which is limitedly matched with the upper end of the spring piece is provided on the inner wall of the middle part of the pen barrel, and an outer convex ring (10) which is pressed and matched with the lower end of the spring piece is fixedly connected to the lower part of the core sleeve.

6. The stepped three-point posture correction pen according to claim 5, characterized in that: The reset mechanism comprises an upper convex ring (17) fixedly connected to the upper end of the core sleeve, and also comprises an elastic spring (16) sleeved on the upper section of the core sleeve, the upper end of the elastic spring being elastically pressed and fitted with the lower end surface of the upper convex ring, and the lower end of the elastic spring being elastically pressed and fitted with the upper end surface of the inner convex ring (9).

7. The stepped three-point posture correction pen according to any one of claims 3, 5 or 6, characterized in that: The three spring pieces are respectively a thumb piece corresponding to the thumb, an index piece corresponding to the index finger, and a middle piece corresponding to the middle finger; the portion of the spring piece extending out of the pressing hole is a convex portion; in the length direction of the pen holder, the convex portion of the thumb piece, the convex portion of the index piece, and the convex portion of the middle piece are arranged at intervals of upper, middle, and lower relative heights; the height difference between the convex portion of the thumb piece and the convex portion of the index piece is called an upper height, and the height difference between the convex portion of the index piece and the convex portion of the middle piece is called a lower height, and the lower height is 5-10 times the upper height.

8. The stepped three-point posture correction pen according to claim 7, characterized in that: An elastic pad (18) is fixedly connected to the convex portion of the spring piece, and the color of the elastic pad of the thumb piece is different from the color of the elastic pads on the food piece and the middle piece.

9. The stepped three-point posture correction pen according to claim 8, characterized in that: According to the habit of holding a pen with the right hand, the thumb piece, index piece and middle piece are arranged at intervals on the outer circumference of the pen holder in a clockwise direction from a top-down perspective.

10. The stepped three-point posture correction pen according to claim 8, characterized in that: According to the habit of holding a pen with the left hand, the thumb piece, index piece and middle piece are arranged at intervals on the outer circumference of the pen holder in a counterclockwise direction from a top-down perspective.

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