JP2021066168A - Pressure-replaceable draw pen - Google Patents

Abstract

To provide a pressure-replaceable draw pen that allows the pen tip to be retracted so that the pen core can be easily stored in the barrel or exposed to the outside of the barrel.SOLUTION: There is provided a pressure-replaceable draw pen in which a rear barrel 1 and a front barrel 2 that are mutually sewn and slidable in the axial direction are connected back and forth, and also a pen core (a) is provided at the axial center of the barrel including the rear barrel 1 and the front barrel 2 so as to protrude from the opening at the tip of the front barrel 2. The draw pen comprises the rear barrel 1 on the outer surface of the rear barrel 1 close to the front barrel 2, and a pressing member 3 that controls the relative sliding state in the front barrel 2 in the axial direction.SELECTED DRAWING: Figure 1

Description

The present invention relates to the technical field of office equipment, and specifically provides a press-replaceable draw pen.

The pen is an indispensable office tool in daily life. It is necessary to carry a pen from time to time during study and work so that you can record what you see and hear, such as knowledge, at any time.

Most conventional pens consist of both a pen shaft and a cap. Once the cap is lost or broken, it loses its protection against the nib. In this case, the pen tip is easily damaged, or the leaked pen oil causes trouble to the user, which is really inconvenient to carry. Also, in the case of outside work, when the pressing pen placed in the bag is suddenly pushed by an article in the bag, the pen core is easily exposed, and the exposed pen tip is oiled in the bag. May stick together or pierce a frivolous object.

With respect to the problems in the prior art, an object of the present invention is to provide a press-replaceable draw pen that easily expands and contracts. Depending on the usage request, the pen core can be stored inside the front axle cylinder or extended outside the front axle cylinder. It is possible to protect the pen tip more appropriately and it is convenient to carry, and if a separate cap is omitted and a small external force is applied, it is difficult for the pen tip to extend from the front shaft cylinder, and other things. Does not stain or stab.

In order to solve the above technical problems, the present invention employs the following technical solutions.

The pressure-replaceable draw pen according to the present invention includes a rear axle cylinder and a front axle cylinder, and the front axle cylinder and the rear axle cylinder are in contact with each other and can slide in the axial direction. A pen core is arranged inside the front axle cylinder, and a return spring is engaged between the pen core and the front axle cylinder.

Further, a pressing member for controlling the relative sliding state of the rear axle cylinder and the front axle cylinder in the axial direction is included, and a pressing insertion hole capable of moving the pressing member up and down is provided on the outer wall of the front portion of the rear axle cylinder. At least one limiting hook is fixedly installed on the inner wall of the front portion of the rear axle cylinder.

The pressing member includes a pressing block located at the top and at least one side pushing member fixed to the lower end of one side of the pressing block, and corresponds to each other with a limiting hook on the front side of the side pushing member. A hook is provided, a first sliding surface is provided on the outer wall of the lower end of the side surface pushing member, and a third sliding surface is provided on the rear side of the lower end of the side surface pushing member.

A fitting groove to be fitted with the pressing member is provided on the rear side of the front axle cylinder, and a sliding slope that fits with the third sliding surface of the side thrusting member is provided on the rear groove wall of the fitting groove. The bottom wall of the fitting groove is provided with a slope that fits the lower end of the side thrusting member, the slope includes a first slope and a second slope, and the second slope is the back side of the first slope. The second slope is located below the first slope, and the top of the second slope is connected to the back side of the first slope. Is fit.

When the pressing member is first compressed, the sliding slope is driven by the third sliding surface of the side pressing member in the pressing member, and the rear axle cylinder and the front axle cylinder are compressed until the axial distance becomes the first state. The hook of the side thrusting member in the pressing member engages with the limiting hook to expose the pen core and elastically contact the first sliding surface with the first slope;
When the pressing member is pressed next time, the first sliding surface of the side surface pushing member is pressed by the second slope on the bottom wall of the fitting groove, the side surface pushing member is deformed backward, and the limit is applied. Detach from the position hook; and when the pressing member is released, the lateral thrust member is repositioned along the sliding slope by the elastic action of the return spring, and the distance between the rear and front axles is maximum. Release until the second state is reached, and hide the pen core,
It is configured so that it can be done.

Further, the slide slope includes a first slide slope and a second slide slope, and the second slide slope is located behind the first slide slope. As a result, in the process in which the pressing member is further compressed to the original position after being compressed for the first time, the second sliding slope functions as a guiding and limiting action on the pressing member 3. As a result, it is unlikely to be obstructed by the limiting hook in the process of moving the pressing member upward.

This makes it possible to store the pen core inside the front axle cylinder or extend it outside the front axle cylinder according to the usage request. It is possible to protect the pen tip more appropriately, and it is convenient to carry, omitting a separate cap, and if a small external force is applied, it is difficult for the pen tip to extend from the front axle cylinder, and it will stain other things. And will not be pierced.

Further, the radial cross-sectional widths of the first slope and the first sliding slope are equal, and the radial cross-sectional widths of the second slope and the second sliding slope are equal. In the process of pressing the pressing block so as to engage the engagement hook and the limiting hook, the first sliding surface moves on the first slope. Further, in the process of pressing the pressing block so as to separate the engagement hook and the limiting hook, the first sliding surface slides on the second slope.

Further, the top of the pressing member and the outer wall of the rear axle cylinder in the state of being pressed for the first time are configured to be flush with each other. As a result, when the pressing member is first pressed down to expose the pen core from the front axle cylinder, the force received by the pressing member from the user's hand is small when the pen core is in use, and the pressing member is pressed next time. It is difficult to reduce the pressure, and the usage state of the pen core can be prevented from changing.

Further, the number of the limiting hooks is two, and the two limiting hooks are symmetrical with respect to the pressing hole. The number of side thrust members is two. This makes the process of moving the pressing member downward or upward more stable.

Further, the cross-sectional width of the limiting hook is set to 1/5 to 1/4 of the inner diameter of the rear axle cylinder 1. This will
Avoid that the volume of the limiting hook interferes with the deformation of the pressing member and the recovery of the deformation due to the excessive habit.

Further, the position of the horizontal plane where the bottom end of the limiting hook is located is set higher than the position of the horizontal plane where the bottom end of the fitting groove is located. As a result, in the process of pressing the pressing block so that it approaches the limiting hook, the fitting groove is sufficiently displaced by the pressing action between the pressing block and the limiting hook, and in conjunction with this, the fitting groove is sufficiently displaced. The front axle cylinder is moved within the rear axle cylinder 1 at an appropriate distance. This exposes the pen core from the front axle tube.

Further, arc-shaped limiting blocks are fixedly installed at both left and right ends of the pressing block.
The sum of the width of the two arc-shaped limiting blocks and the width of the pressing block is made larger than the groove width of the pressing hole. The configuration that limits the anti-pressing block makes it difficult for the pressing block to slide out from the pressing hole in the process of using or carrying the pen, and the pen core is in an unused state. Occasionally, the front axle can be locked by the pressing member by the cooperative action of the arc-shaped limiting block, the fitting groove and the limiting hook.

Further, a guide pillar is fixedly connected to the bottom end of the rear axle cylinder, a guide groove is opened at the bottom end of the front axle cylinder, and the guide groove and the guide pillar fit each other. When arranging the front axle cylinder inside the rear axle cylinder, if a part of the front axle cylinder is made to enter the rear axle cylinder by the guiding action of the guide column, the position where both fitting grooves are located in the front axle cylinder is exactly. It can be symmetrical with respect to the pressing holes. Further, the normal progress of the subsequent pressing operation is effectively guaranteed.

Further, a shiatsu groove is formed on the surface of the pressing block, and the inner wall of the acupressure groove is roughened. This makes it convenient to press the pressing member and prevents the hand from being injured.

Compared with the prior art, the present invention has the following advantages.

1) Depending on the usage request, the pen core can be stored in the front axle cylinder or extended outside the front axle cylinder. It is possible to protect the pen tip more appropriately, and it is convenient to carry, omitting a separate cap, and if a small external force is applied, it is difficult for the pen tip to extend from the front axle cylinder, and it will stain other things. And will not be pierced.

2) The slide slope includes the first slide slope and the second slide slope, and the second slide slope is located on the back side of the first slide slope. In the process of being compressed to recovery, the second sliding slope functions as a guiding and limiting action on the pressing member 3. As a result, it is unlikely to be obstructed by the limiting hook in the process of moving the pressing member upward.

3) The radial cross-sectional widths of the first slope and the first slide slope are equal, and the radial cross-sectional widths of the second slope and the second slide slope are equal so that the engagement hook and the limiting hook are engaged with each other. In the process of pressing the pressing block, the first sliding surface moves on the first slope, but in the process of pressing the pressing block so as to separate the engagement hook and the limiting hook, the first sliding surface The surface slides on the second slope.

4) The top of the pressing member in the state of being initially pressed down and the outer wall of the rear axle cylinder are configured to be flush with each other, so that the pressing member is first pressed down to expose the pen core from the front axle cylinder. At that time, if it is in the used state, the force received from the user's hand on the pressing member is small, it is difficult to press down the pressing member next time, and the used state of the pen core can be prevented from changing.

5) The number of limiting hooks is two, and the two limiting hooks are symmetrical with respect to the pressing hole, and the number of side thrusting members is two, so that the pressing member can move downward or move downward. The upward movement process becomes more stable.

6) By setting the cross-sectional width of the limiting hook to 1/5 to 1/4 of the inner diameter of the rear axle cylinder 1, the volume of the limiting hook is excessively habitually hindering the deformation of the pressing member and the recovery of the deformation. avoid.

7) In the process of pressing the pressing block so that the position of the horizontal plane where the bottom end of the limiting hook is located is higher than the position of the horizontal plane where the bottom end of the fitting groove is located so as to approach the limiting hook. Due to the pressing action between the pressing block and the limiting hook, the fitting groove is sufficiently displaced.
In conjunction with this, the front axle cylinder is moved within the rear axle cylinder 1 at an appropriate distance. This exposes the pen core from the front axle tube.

8) Arc-shaped limiting blocks are fixedly installed at both left and right ends of the pressing block, and the sum of the widths of the two arc-shaped limiting blocks and the widths of the pressing blocks is made larger than the groove opening width of the pressing hole. The configuration that limits the pressing block makes it difficult for the pressing block to slide out from the pressing insertion hole during the process of using or carrying the pen, and when the pen core is in an unused state. The front axle cylinder can be locked by the pressing member by the cooperative action of the arc-shaped limiting block, the fitting groove and the limiting hook.

9) A guide pillar is fixedly connected to the bottom end of the rear axle cylinder, a guide groove is opened at the bottom end of the front axle cylinder, and the guide groove and the guide pillar fit each other. In this case, when arranging the front axle cylinder inside the rear axle cylinder, if a part of the front axle cylinder is made to enter the rear axle cylinder by the guiding action of the guide column, both fitting grooves in the front axle cylinder are located. The position can be just symmetrical with respect to the pressing hole. Further, the normal progress of the subsequent pressing operation is effectively guaranteed.

10) Since the acupressure groove is provided on the surface of the pressing block and the inner wall of the acupressure groove is roughened, the pressing against the pressing member is convenient and the hand is less likely to be injured.

Schematic diagram of the perspective configuration according to the present invention. Schematic diagram of the cross-sectional structure according to the present invention. FIG. 6 is a schematic cross-sectional configuration diagram when the pen core according to the present invention is in an unused state. FIG. 3 is a schematic configuration diagram of A in FIG. FIG. 3 is a schematic perspective view of a rear axle cylinder portion according to the present invention. Schematic diagram of the perspective configuration of the front axle cylinder portion according to the present invention. FIG. 3 is a schematic perspective view of a front axle cylinder and a pressing member portion according to the present invention. FIG. 6 is a schematic front perspective configuration diagram of a pressing member portion according to the present invention. FIG. 5 is a schematic view of a bottom perspective configuration of a pressing member portion according to the present invention. Schematic diagram of the perspective configuration of the limiting hook portion according to the present invention.

Hereinafter, the technical proposal according to the embodiment of the present invention will be clearly and sufficiently described with reference to the drawings in the embodiment of the present invention. Obviously, the examples described are merely partial examples of the present invention and cannot be understood as all examples. Based on the examples of the present invention, all other examples obtained by those skilled in the art without spending creative labor are included in the scope of the present invention seeking protection. The following description is for disclosing the present invention so that a person skilled in the art can realize the present invention.

In the disclosure of the present invention, the orientation or positional relationship indicated by the terms "top", "bottom", "inside", "outside", "top edge", "bottom edge", etc. is the orientation or positional relationship shown in the drawings. It is based, and is for easy and brief description of the present invention, and does not necessarily indicate or suggest a particular orientation, a structure and operation with a particular orientation, of a symmetric device or element. Therefore, the term cannot be understood as a limitation on the present invention. Also, the terms "first" and "second" are merely to explain the purpose and should not be understood to indicate or suggest relative importance.

In the disclosure of the present invention, it should be further noted that the terms "attachment", "provided", "joint", "connection", etc. in the present application have broad meanings unless otherwise specified or limited. It should be understood that, for example, a "connection" may be a fixed connection, a removable connection, an integral connection, a mechanical connection, an electrical connection, or a direct connection. It may be a connection via an intermediary, or it may be a communication inside both units. For those skilled in the art, the specific meaning of the term is understood by the specific circumstances.

Example 1:
As shown in FIGS. 1 and 2, the rear axle cylinder 1 and the front axle cylinder 2 are included, and the front axle cylinder 2 and the rear axle cylinder 1 are in contact with each other and can slide in the axial direction. The pen core a is arranged inside 1 and the front axle cylinder 2.
A return spring 4 is engaged between the pen core a and the front axle cylinder 2, and a pressing member 3 that controls the relative sliding state of the rear axle cylinder 1 and the front axle cylinder 2 in the axial direction (just a pressing member in the process of use). The position where the user's thumb is aligned) is included, and the top of the pressing member 3 in the state of being pressed for the first time and the outer wall of the rear axle cylinder 1 are configured to be flush with each other. As a result, when the pressing member 3 is first pressed down to expose the pen core a from the front axle cylinder 2, the force received by the user's hand on the pressing member 3 is small and the pressing member 3 is pressed. It is difficult to reduce the pressure on the member 3 next time, and the usage state of the pen core a can be prevented from changing.

As shown in FIGS. 5 and 10, a pressing insertion hole 11 capable of moving the pressing member 3 up and down is provided on the outer wall of the front portion of the rear axle cylinder 1, and the inner wall of the front portion of the rear axle cylinder 1 is provided. At least one limiting hook 12 is fixedly installed. The number of limiting hooks 12 is two, and the two limiting hooks 12 are symmetrical with respect to the pressing hole 11. The number of side thrusting members 32 is two. As a result, the downward movement or upward movement process of the pressing member 3 becomes more stable. The cross-sectional width of the limiting hook 12 is 1/5 of the inner diameter of the rear axle cylinder 1. As a result, it is possible to prevent the volume of the limiting hook 12 from hindering the deformation of the pressing member 3 and the recovery of the deformation due to an excessive habit.

As shown in FIGS. 3 and 4, the position of the horizontal plane where the bottom end of the limiting hook 12 is located is higher than the position of the horizontal plane where the bottom end of the fitting groove 21 is located. As a result, in the process of pressing the pressing block 31 so as to approach the limiting hook 12, the fitting groove 21 is sufficiently displaced by the pressing action between the pressing block 31 and the limiting hook 12. In conjunction with this, the front axle cylinder 2 is moved within the rear axle cylinder 1 at an appropriate distance. As a result, the pen core a is exposed from the front axle cylinder 2.

As shown in FIGS. 8 and 9, the pressing member 3 includes a pressing block 31 located at the top and at least one side pushing member 32 fixed to the lower end of one side of the pressing block 31, and the surface of the pressing block 31. A shiatsu groove is opened in the acupressure groove, and the inner wall of the acupressure groove is roughened. Press block 3
Arc-shaped limiting blocks 34 are fixedly installed at both left and right ends of 1. The sum of the widths of the two arc-shaped limiting blocks 34 and the widths of the pressing block 31 is made larger than the groove opening width of the pressing insertion hole 11.
Due to the configuration that limits the counter-pressing block 31, it becomes difficult for the pressing block 31 to slide out from the pressing insertion hole 11 in the process of using or carrying the pen, and the pen core a is not provided. When in use, the front axle cylinder 2 can be locked by the pressing member 3 by the cooperative action of the arc-shaped limiting block 24, the fitting groove 21, and the limiting hook 12. In addition, the side thrust member 3
A engaging hook 33 that corresponds to the limiting hook 12 is provided on the front side portion of the 2, and the side thrusting member 32.
A first sliding surface 321 is provided on the outer wall of the lower end of the surface, and a third sliding surface 323 is provided on the rear side of the lower end of the side surface thrusting member 32.

As shown in FIG. 6, a fitting groove 21 to be fitted with the pressing member 3 is provided on the rear side of the front axle cylinder 2, and the third sliding of the side pushing member 32 is provided on the rear groove wall of the fitting groove 21. A sliding slope 21a that fits each other with the surface 323 is provided, the sliding slope 21a includes a first sliding slope 210 and a second sliding slope 211, and the second sliding slope 211 is located behind the first sliding slope 210. .. As a result, in the process in which the pressing member 3 is further compressed to the original position after being compressed for the first time, the second sliding slope 211 functions as a guiding and limiting action on the pressing member 3. As a result, the pressing member 3 is less likely to be hindered by the limiting hook 12 in the process of moving upward. The radial cross-sectional widths of the first slope 22 and the first sliding slope 210 are equal, and the radial cross-sectional widths of the second slope 23 and the second sliding slope 211 are equal. In the process of pressing the pressing block 31 so as to engage the engaging hook 33 and the limiting hook 12,
The first sliding surface 321 moves on the first slope 22. Furthermore, the hook 33 and the limit hook 12
In the process of pressing the pressing block 31 so as to desorb and, the first sliding surface 321 slides on the second slope 23. The bottom wall of the fitting groove 21 is provided with a slope 22a that fits the lower end of the side pressure member 32. The slope 22a includes the first slope 22 and the second slope 23, and the second slope 2
3 is located on the back side of the first slope 22, the second slope 23 is located on the lower side of the first slope 22, and the top of the second slope 23 is connected to the back side of the first slope 22. The first sliding surface 321 of 32 and the second slope 23 fit.

As shown in FIGS. 5 and 7, the guide pillar 13 is fixedly connected to the bottom end of the rear axle cylinder 1, the guide groove 24 is opened at the bottom end of the front axle cylinder 2, and the guide groove 24 and the guide pillar 13 are connected. Fit each other. When arranging the front axle cylinder 2 in the rear axle cylinder 1, if a part of the front axle cylinder 2 is made to enter the rear axle cylinder 1 by the guiding action of the guide pillar 13, both fitting grooves in the front axle cylinder 2 The position where 21 is located can be exactly symmetrical with respect to the pressing hole 11. Further, the normal progress of the subsequent pressing operation is effectively guaranteed.

FIG. 3 shows a case where the pen core a is located inside the front axle cylinder 2. When using the pen core a, as shown in FIG. 4, the user holds the rear axle cylinder 1, presses the pressing member 3 with the thumb for the first time, and interlocks with the pressing block 31 to press the side thrusting member. In the process of the 32 moving downward and the side thrusting member 32 moving, the third sliding surface 323 presses the sliding slope 21a, and the rear axle cylinder 1 and the front axle cylinder 2 are separated from each other in the first axial direction. Compress. Engagement hook 33 of the side thrusting member 32 in the pressing member 3
The pen is ready for use when the pen core a is exposed and elastically conflicts with the first sliding surface 321 and the first slope 22.

When the pen is not used, the pressing member 3 is further (next time) pressed down, and the first sliding surface 321 of the side pushing member 32 is pressed by the second slope 23 on the bottom wall of the fitting groove 21. The side thrusting member 32 is deformed backward to be detached from the limiting hook 12.

When the pressing member 3 is released, the side thrusting member 32 is repositioned along the sliding slope 21a by the elastic action of the return spring 4, and the rear axle cylinder 1 and the front axle cylinder 2 are brought into the second state where the axial distance is maximum. It is released until it becomes, and the pen core a is hidden.

Depending on the usage request, the pen core a can be stored in the front axle cylinder 1 or extended outside the front axle cylinder 1. More appropriate protection against the pen tip is possible, and it is convenient to carry. If a separate cap is omitted and a small external force is applied, it is difficult for the pen tip to extend from the front axle cylinder 1 and stain other objects. Nothing or piercing.

The above description is merely a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to this, and a person skilled in the art who is familiar with the present technical field is within the technical scope presented in the present invention. , The technical plan of the present invention and the equal replacement or amendment based on the reformed idea thereof are all included in the scope of protection of the present invention.

1 Rear axle cylinder 11 Pressing hole 12 Limit hook 13 Guide pillar
2 Front axle cylinder 21 Fitting groove 21a Sliding slope 210 First sliding slope 211 Second sliding slope 22a Slope 22 First slope 23 Second slope 24 Guide groove 3 Pressing member 31 Pressing block 32 Side pushing member 321 First sliding Surface 322 Second sliding surface 323 Third sliding surface 33 Engagement hook 34 Arc-shaped limiting block 4 Return spring a Pen core

Claims (10)

The rear axle cylinder (1) and the front axle cylinder (2) are included, and the front axle cylinder (2) and the rear axle cylinder (1) are in contact with each other and can slide in the axial direction. Pen core (a) inside (1) and front axle cylinder (2)
Is a pressure-replaceable draw pen in which a return spring (4) is engaged between the pen core (a) and the front axle cylinder (2).
Further, a pressing member (3) for controlling the relative sliding state of the rear axle cylinder (1) and the front axle cylinder (2) in the axial direction is included, and the pressing member (3) is attached to the outer wall of the front portion of the rear axle cylinder (1). A pressing hole (11) capable of moving up and down is opened, and at least one limiting hook (12) is fixedly installed on the inner wall of the front part of the rear axle cylinder (1).
The pressing member (3) is a pressing block (31) located at the top and the pressing block (31).
), Which includes at least one side thrusting member (32) fixed to the lower end of one side portion, and a locking hook (33) corresponding to the limiting hook (12) on the front side portion of the side surface thrusting member (32). Is provided, and a first sliding surface (321) is provided on the outer wall at the lower end of the side surface thrusting member (32).
A third sliding surface (323) is provided on the rear side of the lower end of the side surface thrusting member (32).
A fitting groove (21) to be fitted with the pressing member (3) is provided on the rear side of the front axle cylinder (2), and a side pushing member (32) is provided on the rear groove wall of the fitting groove (21). A sliding slope (21a) that fits each other with the third sliding surface (323) of the above is provided, and a side thrusting member (21a) is provided on the bottom wall of the fitting groove (21).
A slope (22a) fitted to the lower end of 32) is provided, the slope (22a) includes a first slope (22) and a second slope (23), and the second slope (23) is the first. Slope (22)
The second slope (23) is located below the first slope (22), and the top of the second slope (23) is connected to the back side of the first slope (22). Side thrust member (32)
The first sliding surface (321) and the second slope (23) of the above are fitted,
When the pressing member (3) is pressed for the first time, the side thrusting member (3) in the pressing member (3) is pressed.
The sliding slope (21a) is driven by the third sliding surface (323) of 2), and the rear axle cylinder (1) and the front axle cylinder (1) are driven.
2) is compressed until the axial distance becomes the first state, and the engaging hook (33) of the side thrusting member (32) in the pressing member (3) engages with the limiting hook (12), and the pen core (a) ), And the first sliding surface (321) elastically conflicts with the first slope (22).
When the pressing member (3) is pressed down next time, the second slope (23) on the bottom wall of the fitting groove (21)
) Presses the first sliding surface (321) of the side surface pushing member (32) to deform the side surface pushing member (32) backward and detach it from the limiting hook (12).
When the pressing member (3) is released, the side thrusting member (32) is repositioned along the sliding slope (21a) by the elastic action of the return spring (4), and the rear axle cylinder (1) and the front axle cylinder (1) and the front axle cylinder (1) are returned. Release 2) until the second state where the axial spacing is maximum is reached, and hide the pen core (a).
It is configured to be able to
A press-replaceable draw pen that features this. The slip slope (21a) includes a first slip slope (210) and a second slip slope (211), and the second slip slope (211) is located behind the first slip slope (210). The press-replaceable draw pen according to claim 1. The first slope (22) and the first slide slope (210) have the same radial cross-sectional width, and the second slope (23) and the second slide slope (211) have the same radial cross-sectional width. The press-replaceable draw pen according to claim 2. The pressure-replaceable draw pen according to claim 1, wherein the top of the pressing member (3) in the state of being pressed for the first time is flush with the outer wall of the rear axle cylinder (1). The number of the limiting hooks (12) is two, the two limiting hooks (12) are symmetrical with respect to the pressing hole (11), and the number of the side thrusting members (32) is two. The press-replaceable draw pen according to claim 1, wherein the number is one. The press-replaceable draw pen according to claim 1, wherein the cross-sectional width of the limiting hook (12) is 1/5 to 1/4 of the inner diameter of the rear axle cylinder (1). The press-replaceable draw pen according to claim 1, wherein the position of the horizontal plane having the bottom end of the limiting hook (12) is higher than the position of the horizontal plane having the bottom end of the fitting groove (21). Arc-shaped limiting blocks (34) are fixedly installed at both left and right ends of the pressing block (31), and the sum of the widths of the two arc-shaped limiting blocks (34) and the widths of the pressing blocks (31) is pressed. The press-replaceable draw pen according to claim 1, wherein the draw pen is larger than the groove width of the insertion hole (11). A guide pillar (13) is fixedly connected to the bottom end of the rear axle cylinder (1), and a guide groove (24) is opened at the bottom end of the front axle cylinder (2) to guide the guide groove (24). The press-replaceable draw pen according to claim 1, wherein the pillars (13) are fitted to each other. The pressure replaceable draw pen according to claim 1, wherein a shiatsu groove is provided on the surface of the pressure block (31), and the inner wall of the acupressure groove is roughened.

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