Lateral pressing type pen

Abstract

The technical scheme belongs to the technical field of gel pens, and particularly relates to a side pressing type pen which comprises a penholder body, the penholder body is provided with a pen cavity, a pen outlet is formed in the front end of the pen cavity, a refill and an elastic piece are arranged in the pen cavity, the elastic piece is arranged at the front end of the refill in a sleeving mode, one end of the elastic piece abuts against the inner wall of the front end of the pen cavity, and the other end of the elastic piece abuts against the front portion of the refill. A switch mechanism is arranged in the pen cavity and comprises a pressing switch hinged to the pen cavity, an adjusting rod and a plunger part sliding in the pen cavity, a mounting groove is formed in the side wall of the pen holder body, the pressing switch is arranged in the mounting groove in a swinging mode, and the pressing switch can be switched between an open state and a closed state. The push switch acts on the adjusting rod and drives the adjusting rod to turn over; when the pressing switch is closed, the elastic force of the pressing switch enables the refill to be located in the pen cavity, and when the pressing switch is opened, the adjusting rod drives the plunger part to slide through the guide face so that the refill can be ejected out of the pen cavity, and the pressing switch is arranged on the side wall of the pen holder body, so that operation is more convenient.

Description

Technical Field

[0001] The present technical solution relates to the technical field of gel pens, and particularly refers to a side-pressure pen. Background Art

[0002] A writing pen is a tool for writing or drawing, usually composed of a pen barrel body, a pen tip (or nib), a pen cap, a pen core, etc. According to different usage methods, it can be divided into a press-type pen, a cap-type pen, etc.

[0003] For example, Chinese Patent CN208615551U discloses a press-type telescopic pen, which includes a pen shell, a pen core, a sleeve, and a movable component. The pen shell has a tubular channel for the pen core to be inserted. The sleeve has a guiding section provided in the tubular channel and a positioning section extending from the guiding section. The movable component has an operating piece that can switch and fix positions on the positioning section, a movable piece that contacts the pen core corresponding to the guiding section, and a sleeve wheel sleeved outside the guiding section. The operating piece can be pressed to change the fixed position on the positioning section to push the movable piece, so that the movable piece pushes the pen core out of the tubular channel.

[0004] For the above press-type telescopic pen, the pen core is extended or reset by pressing the operating piece at the top using a spring, thereby realizing the locking and unlocking of the pen core for use. The existing single-handed pressing method requires opening the hand to the top of the pen, which is troublesome to operate and inconvenient to use, and needs to be improved. Summary of the Invention

[0005] The present technical solution provides a side-pressure pen in order to improve the problem that the pen core ejection operation of the top-pressing pen is troublesome and inconvenient to use.

[0006] The purpose of the present technical solution is achieved as follows:

[0007] A side-pressure pen includes a pen barrel body. The pen barrel body has a pen cavity. An ink outlet is provided at the front end of the pen cavity. A pen core and an elastic member are provided in the pen cavity. The elastic member is sleeved on the front end of the pen core. One end of the elastic member abuts against the inner wall of the front end of the pen cavity, and the other end abuts against the front part of the pen core. Its characteristics are as follows:

[0008] A switch mechanism is also provided in the pen cavity. The switch mechanism includes a push switch, an adjusting rod hinged, and a plunger member sliding in the pen cavity. An installation groove is provided on the side wall of the pen barrel body, and the push switch is swingably arranged in the installation groove. The push switch can be switched between an open state and a closed state. The push switch acts on the adjusting rod and drives the adjusting rod to flip.

[0009] The plunger member has an inclined guiding surface. When the push switch is closed, the elastic force of the elastic member makes the pen core in the pen cavity. When the push switch is open, the adjusting rod drives the plunger member to slide through the guiding surface for ejecting the pen core from the pen cavity.

[0010] With the above technical solution, when the side-pressure pen is in normal use, the switch mechanism controls the extension or retraction of the refill according to the switch state of the push switch. When the push switch is switched to the closed state, the elastic force of the elastic member acts between the inner wall of the front end of the pen cavity and the front part of the refill, so that the refill is kept in a tendency of being completely embedded in the pen cavity. Conversely, when the push switch is operated to be switched to the open state, it drives the adjusting rod to reverse and flip. Based on the guiding surface of the adjusting rod along the plunger member, the adjusting rod abuts against the inclined surface and applies a rotational force, which is converted into pushing the plunger member to slide downward in the vertical direction. The plunger member moves downward against the elastic force of the elastic member, and the elastic member is compressed, so that the refill is ejected from the pen cavity, ensuring normal writing use, improving the convenience and operation stability of the extension and retraction of the refill. By arranging the push switch in the installation groove on the side wall of the pen barrel, only by gently pressing the switch on the side wall, the refill can be controlled without changing the pen-holding posture, improving the writing fluency and comfort, and thus making the operation more convenient.

[0011] Preferably, the push switch has an elastic connection part that extends towards the bottom of the installation groove. A fixing plate is formed at the bottom of the installation groove, and the fixing plate is correspondingly provided with a fixing hole for the elastic connection part to be embedded.

[0012] The opposite sides of the elastic connection part have limit protrusions, and the limit protrusions can limit the elastic connection part from disengaging.

[0013] With the above technical solution, the side of the push switch with the elastic connection part faces into the installation groove, aligns the elastic connection part with the fixing hole of the fixing plate and passes through it. Based on the elastic connection part being located in the middle part of the push switch, the two ends of the push switch swing to meet the lever-type pressing use.

[0014] Through elastic deformation of the elastic connection part, the limit protrusions on both sides of it can pass through the fixing hole, and then the protruding limit protrusions protrude and abut, thereby restricting the accidental detachment of the push switch from the fixing hole and increasing the connection strength between the push switch and the pen barrel body.

[0015] Preferably, both ends of the adjusting rod along the hinge axis have a first abutting part and a second abutting part, and the push switch has a first pressing column and a second pressing column that are respectively arranged at both ends and act on the first abutting part and the second abutting part one by one;

[0016] The plunger member is fitted with the upper end of the refill, and the higher end of the guiding surface has a positioning surface, and the positioning surface has different inclination directions and angles relative to the guiding surface;

[0017] Under the action of the second pressing column, the adjusting rod rotates so that the second abutting part moves along the guiding surface. The second abutting part has an abutting surface, and when the abutting surface abuts against the positioning surface, it can limit the retraction of the plunger member.

[0018] Through the above technical solution, the first pressure column and the second pressure column at both ends of the push switch pass through the bottom of the installation groove. Based on the first contact part and the second contact part of the adjusting rod, the first pressure column and the second pressure column are arranged in alignment respectively, so that the two pressure columns push the two contact parts respectively to realize the rotation of the adjusting rod around the hinge axis. The design of driving the adjusting rod with two points (the first pressure column and the second pressure column) enables smooth and reliable control associated with the adjusting rod, ensuring uniform force and accuracy in the switch operation.

[0019] When pressing one end of the adjusting rod with the second pressure column, the second contact part is driven to rotate the adjusting rod. The positioning surface and the guiding surface are connected and transitioned. The inclination angles of the two need to be different. Based on the second contact part having a contact surface, the shape and inclination angle of the positioning surface are adapted to the contact surface, so that the second contact part moves along the guiding surface until the contact surface abuts against the positioning surface, enabling the adjusting rod to stop rotating after reaching the predetermined position, so that the refill is kept in the accurate position of being extended for use. On the contrary, operating the first pressure column makes the adjusting rod rotate in the reverse direction, driving the contact surface and the positioning surface to separate from each other, so that the refill is retracted.

[0020] Preferably, the second contact part further has a butting surface. When the contact surface abuts against the positioning surface, the butting surface can abut against the corresponding guiding surface;

[0021] An included angle is formed between the butting surface and the contact surface.

[0022] Through the above technical solution, the included angle formed between the butting surface and the contact surface is adapted to the included angle formed between the guiding surface and the positioning surface, so that when the contact surface abuts against the positioning surface, the butting surface can abut against the guiding surface at the same time, further improving the stability.

[0023] Preferably, the plunger member is provided with a guiding groove, the second contact part is located in the guiding groove, and the guiding surface is arranged at the bottom of the guiding groove.

[0024] Through the above technical solution, the moving path of the adjusting rod is further guided by the guiding groove, restricting the shaking on the relative two sides and reducing the deviation, making its movement along the inclined surface more stable.

[0025] By embedding the second contact part into the fixing groove, the rotation direction is set opposite to the inclination direction of the guiding surface and is in the same vertical plane to ensure the cooperation, improving the simplicity of assembly and making the installation more accurate.

[0026] Preferably, the pen barrel body includes a first barrel body and a second barrel body. The first barrel body and the second barrel body are connected in a split manner, so that the adjusting rod and the plunger member can be installed into the corresponding pen cavity of the second barrel body through the connection part;

[0027] On opposite sides of the plunger along the sliding direction, there are protruding limiting strips, and on the inner wall of the pen cavity, there are formed limiting grooves for the limiting strips to be correspondingly inserted into one by one.

[0028] Through the above technical solution, the rod body one is detached from the rod body two. The opening of the rod body two corresponding to the pen cavity is connected. The adjusting rod and the plunger are loaded into the pen cavity through the corresponding opening at the connection. The limiting groove vertically penetrates one side of the inner wall of the pen cavity and contacts the limiting strip. The shape and size of the limiting strip match those of the limiting groove. The plunger is guided and installed along the limiting groove, restricting the rotation of the plunger, and improving the accuracy and convenience of installation.

[0029] Preferably, the adjusting rod has a hinge post, and both ends of the hinge post are correspondingly inserted into the limiting grooves on both sides. On the inner wall of the pen cavity, there is a protruding clamping strip portion, and the clamping strip portion is arranged corresponding to the hinge post for limiting.

[0030] Through the above technical solution, the adjusting rod rotates around the axis of the hinge post. The hinge post is limited by being inserted into the limiting groove. The clamping strip portions are correspondingly formed on the periphery of the hinge post, further restricting the offset of the hinge post, and ensuring the stability and accuracy of rotation.

[0031] Preferably, a fixing groove is opened at the upper end of the pen rod body, a plug is arranged in the fixing groove, and a pressure relief member is movably arranged in the plug;

[0032] The pressure relief member includes a return spring, a movable block and a rod cap. The movable block has a rod body portion. The plug is provided with a through hole for the rod body portion to pass through, and the rod cap is arranged on the rod body portion;

[0033] The return spring is arranged between the movable block and the bottom of the fixing groove. The size of the movable block is larger than the aperture of the through hole, and the elastic force of the return spring makes the movable block abut against the inner wall of the plug.

[0034] Through the above technical solution, after the rod body portion of the movable block passes through the through hole, the rod cap is connected to the end of the rod body far from the movable block, and the plug is embedded in the fixing groove for fixation. Based on the fact that the size of the movable block is larger than the aperture of the through hole, the movable block is restricted from detaching from the through hole. At this time, the return spring abuts between the movable block and the bottom of the fixing groove, and its elastic force makes the movable block have a tendency to press tightly against the inner wall of the plug, endowing the pressing member with good resilience. By pressing the rod cap, the return spring is compressed, realizing a quick response; when the rod cap is released, the return spring quickly returns to its original shape, pushing the movable block to reset, so as to meet the requirement of repeatedly pressing to release pressure.

[0035] Preferably, the movable block has an arc surface, and the inner wall of the plug is adapted to the arc surface.

[0036] Through the above technical solution, the arc surface of the movable block contacts the inner wall of the plug head and is mutually adapted, so that the arc surface guides the movable block to perform a small rotation or sliding. At the same time, the rod body portion abuts against the inner wall of the through hole to limit excessive rotation, and the decompression degree is further improved by turning the rod cap.

[0037] Preferably, a guide block is further arranged in the plug head. The guide block is slidably arranged relative to the plug head. The movable block abuts against the guide block. A groove is formed on one side of the guide block facing away from the movable block for the return spring to be embedded.

[0038] The length of the rod body above the hinge point of the adjusting rod is less than the length of the rod body below the hinge point.

[0039] Through the above technical solution, the guide block is embedded in the plug head and its size is adapted to its interior. When an external force (pressing the rod cap) acts on the movable block, the movable block converts the force received into pushing the guide block to slide, thereby ensuring the linearity and stability of the movement. Based on the elastic member being embedded in its groove, the elastic member is stably compressed in the vertical direction, and it also avoids a high wear rate between the movable block and the elastic member due to a large movement angle of the movable block, improving the protection effect and thus extending the service life.

[0040] The length of the rod body above the hinge point of the adjusting rod is less than the length of the rod body below the hinge point, so that the rotation amplitude of the upper rod body is smaller. Since the lower rod body has a longer length, the force arm is longer, and it is easier to apply pressure to the guide surface when rotating.

[0041] The prominent and beneficial technical effects of this technical solution compared with the prior art are:

[0042] 1. In this technical solution, the switch mechanism controls the extension or retraction of the pen refill according to the switch state of the pressing switch. The pressing switch is arranged in the installation groove on the side wall of the pen barrel body. Just gently press the switch on the side wall without changing the pen-holding posture to control the use of the pen refill, improving the fluency and comfort of writing, and thus making the operation more convenient.

[0043] 2. In this technical solution, a plug head is arranged in the fixed groove of the pen barrel body, and a decompression member is movably arranged in the plug head. By pressing the rod cap of the decompression member, the movable block cooperates with the return spring to facilitate repeated pressing to achieve the purpose of releasing pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is the overall structural schematic diagram of this embodiment;

[0045] Figure 2 is the partial exploded schematic diagram of this embodiment;

[0046] Figure 3 is the partial exploded schematic diagram of the decompression member in the embodiment;

[0047] Figure 4 Partial sectional view schematic diagram of this embodiment;

[0048] Figure 5 Another partial sectional view schematic diagram of this embodiment;

[0049] Figure 6 Partial explosion schematic diagram of the switch mechanism in the embodiment;

[0050] Figure 7 Partial sectional view schematic diagram of the second rod body in the embodiment;

[0051] Figure 8 Of this embodiment Figure 4 Another sectional view schematic diagram of the operating state.

[0052] Reference numerals: 1, pen barrel body; 11, first rod body; 12, second rod body; 2, pen cavity; 3, pen core; 4, elastic member; 5, switch mechanism; 51, pressing switch; 52, adjusting rod; 53, plunger member; 6, installation groove; 8, guiding surface; 9, elastic connection portion; 10, fixing plate; 13, fixing hole; 14, limiting projection; 15, first abutting portion; 16, second abutting portion; 17, first pressing column; 18, second pressing column; 19, abutting surface; 20, abutting surface; 21, positioning surface; 22, guiding groove; 23, limiting strip; 24, limiting groove; 25, hinged column; 26, clamping strip portion; 27, fixing groove; 28, plug head; 29, decompression member; 291, return spring; 292, movable block; 293, rod cap; 30, rod body portion; 31, through hole; 32, arc surface; 33, guiding block; 34, groove; 35, pen tip outlet. Specific embodiments

[0053] The following further elaborates in detail on the specific embodiments of the present technical solution with reference to the drawings.

[0054] Embodiment:

[0055] Refer to Figure 1 , a side-pressing pen, comprising a pen barrel body 1, the pen barrel body 1 includes a first rod body 11 and a second rod body 12, the first rod body 11 is located below the second rod body 12, and the first rod body 11 is threadedly connected to the second rod body 12. In this embodiment, the case where the lower end of the first rod body 11 is connected to a pen tip is shown, and the pen tip is threadedly connected inside the first rod body 11.

[0056] Refer to Figure 5 , the pen barrel body 1 has a pen cavity 2, which is provided corresponding to the inside of the pen barrel body 1. A pen core 3 and an elastic member 4 are provided inside the pen cavity 2. The pen cavity 2 is formed with a pen tip outlet 35 corresponding to the pen tip, which is used for the pen core 3 to pass through. One end of the elastic member 4 abuts against the front part of the pen core 3, and the other end abuts against the inner wall of the front end of the pen cavity 2. The elastic force acts on the pen core 3 so that it has a tendency to be embedded and hidden inside the pen cavity 2.

[0057] See Figure 2 , an installation groove 6 is formed on the side wall of the pen barrel body 1, and the installation groove 6 is located on the second barrel 12. In this embodiment, the shown installation groove 6 is formed by an integrally provided square-shaped protrusion. The installation groove 6 communicates with the inside of the pen cavity 2. A fixing plate 10 is formed at the bottom of the installation groove 6, which is located in the middle of the bottom of the installation groove 6. Two ends of the fixing plate 10 are respectively connected to the opposite sides of the installation groove 6 along the length direction. Alternatively, the fixing plate 10 can also be formed by opening two relief holes at the bottom of the installation groove 6. At this time, the two relief grooves are located on the opposite sides of the fixing plate 10.

[0058] See Figure 4 and Figure 6 , a switch mechanism 5 is further provided in the pen cavity 2. The switch mechanism 5 includes a push switch 51. The push switch 51 is preferably a rocker switch. The push switch 51 is adapted to the installation groove 6. The push switch 51 has an elastic connecting portion 9. When the push switch 51 is inserted into the installation groove 6, the elastic connecting portion 9 extends towards the fixing plate 10. The fixing plate 10 is correspondingly provided with a fixing hole 13 for the elastic connecting portion 9 to be inserted into. One end of the elastic connecting portion 9 away from the push switch 51 has a limit protrusion 14, and there are two of them. The two limit protrusions 14 are respectively located on the opposite sides of the elastic connecting portion 9. Based on the elastic deformation ability of the elastic connecting portion 9, after the elastic connecting portion 9 is inserted into the fixing hole 13, the limit protrusions 14 on both sides form a contact limit through the fixing hole 13. The push switch 51 is swingably arranged relative to the installation groove 6, and two switch states are switched by swinging.

[0059] The switch mechanism 5 further includes an adjusting rod 52 and a plunger 53. The adjusting rod 52 and the plunger 53 are both inserted into the pen cavity 2. The plunger 53 is located below the adjusting rod 52. The adjusting rod 52 is hinged in the pen cavity 2. The plunger 53 is slidably connected in the pen cavity 2. The upper end of the pen refill 3 is inserted into the lower end of the plunger 53, so that the plunger 53 and the pen refill 3 move synchronously.

[0060] The push switch 51 acts on the adjusting rod 52. Specifically, the acting mode is that there are a first pressing column 17 and a second pressing column 18 at both ends of the push switch 51. The first pressing column 17 and the second pressing column 18 are both located on the same side of the push switch 51 where the elastic connecting portion 9 is provided. The first pressing column 17 is located above the second pressing column 18, forming two contact points, corresponding to different triggering positions respectively. The adjusting rod 52 has a first abutting portion 15 and a second abutting portion 16. The first abutting portion 15 and the second abutting portion 16 are respectively located at the opposite ends of the adjusting rod 52 along the hinge axis. Among them, the first abutting portion 15 and the second abutting portion 16 are respectively arranged corresponding to the first pressing column 17 and the second pressing column 18, so that the two first pressing columns 17 can respectively abut against the two abutting portions to apply a pushing force, thereby enabling the push switch 51 to push the adjusting rod 52 to rotate.

[0061] The plunger member 53 has a guiding surface 8, which is an inclined surface. The inclined direction of the guiding surface 8 faces the adjusting rod 52. The adjusting rod 52 is provided with a guiding groove 22. The guiding surface 8 is arranged as the bottom of the guiding groove 22. The shape of the guiding groove 22 is adapted to the second abutting portion 16, so that the second abutting portion 16 is embedded in the guiding groove 22 and abuts against the guiding surface 8. When the adjusting rod 52 rotates, the second abutting portion 16 moves along the guiding surface 8, causing the plunger member 53 to slide downward. Alternatively, two guiding ridges can be formed on the guiding surface 8, and the guiding groove 22 is formed by splicing between the two guiding ridges.

[0062] The plunger member 53 has a positioning surface 21, which is arranged at one end of the guiding surface 8 at the higher point and is in transitional connection with the guiding surface 8. It has a certain inclination angle, and the inclination direction is inclined downward in the direction away from the positioning surface 21. The second abutting portion 16 has an abutting surface 20. As Figure 8 shown, when the second pressing column 18 pushes the second abutting portion 16, the pressing switch 51 is opened at this time. The second abutting portion 16 moves to the positioning surface 21. At this time, the plunger member 53 moves downward accordingly. Since the inclination direction and angle of the positioning surface 21 are adapted to the abutting surface 20, the abutting surface 20 can abut against the positioning surface 21, restricting the rotation of the adjusting rod 52 and restricting the backward movement of the plunger member 53, so that the refill 3 is ejected from the pen chamber 2 for use.

[0063] The second abutting portion 16 further has an abutting surface 19, which is arranged opposite to the abutting surface 20 and forms an included angle with the abutting surface 20. The size of this included angle is adapted to the included angle between the positioning surface 21 and the guiding surface 8, so that when the abutting surface 20 abuts against the positioning surface 21, the abutting surface 19 correspondingly abuts against the guiding surface 8.

[0064] When the first pressing column 17 pushes the first abutting portion 15, the pressing switch 51 is closed at this time. The abutting surface 20 disengages from the positioning surface 21, and the abutting surface 19 separates from the guiding surface 8. The plunger member 53 moves reversely under the elastic force and resets.

[0065] See Figure 7, based on the separate arrangement of the first rod body 11 and the second rod body 12, the adjusting rod 52 and the plunger member 53 can be installed into the corresponding pen cavity 2 of the second rod body 12 through the connection part. The hinged manner of the adjusting rod 52 is specifically as follows: the adjusting rod 52 has a hinge post 25, and the hinge post 25 is set as the hinge axis. The inner wall of the pen cavity 2 is provided with limiting grooves 24 along the opposite side walls where the adjusting rod 52 is embedded. The two limiting grooves 24 on both sides are arranged in one-to-one correspondence with the two ends of the hinge post 25, so that the hinge post 25 is guided and positioned along the length direction of the limiting groove 24. The inner wall of the pen cavity 2 also protrudes with a strip part 26, and the strip part 26 is arranged in one-to-one correspondence with the limiting groove 24. Each strip part 26 on each side includes three parts, two of which are located on the opposite sides of the limiting groove 24 in one-to-one correspondence, and the other part is arranged on the side of the limiting groove 24 away from the notch, so as to limit the turning rotation and upward movement of the hinge post 25 in the vertical direction.

[0066] On the opposite sides of the plunger member 53 along the sliding direction, limiting strips 23 protrude. The limiting strips 23 are adapted to the limiting grooves 24, and the two limiting strips 23 are embedded in the two limiting grooves 24 on both sides in one-to-one correspondence to achieve sliding guidance and rotation restriction.

[0067] See Figure 2 , the pen rod body 1 is also provided with a fixing groove 27. The fixing groove 27 is opened at one end of the second rod body 12 facing away from the first rod body 11. The fixing groove 27 is separated from the pen cavity 2. A plug 28 is installed at the fixing groove 27. The lower end of the plug 28 is fitted with the fixing groove 27 to achieve fixation. An unpacking member 29 is arranged in the plug 28. The unpacking member 29 includes a movable block 292 and a return spring 291. The movable block 292 has an arc surface 32, and the arc surface 32 is adapted to and abuts against the inner wall of the plug 28. A guiding block 33 is also arranged in the plug 28. The guiding block 33 is located on the side of the movable block 292 close to the bottom of the fixing groove 27. The guiding block 33 slides along the vertical direction relative to the plug 28. A groove 34 is opened on the side of the guiding block 33 away from the movable block 292. One end of the return spring 291 is embedded in the groove 34, and the other end abuts against the bottom of the fixing groove 27, so that the guiding block 33 has a tendency to slide away from the bottom of the fixing groove 27, and further the movable block 292 has a tendency to press against the inner wall of the plug 28.

[0068] The movable block 292 has a rod body part 30, and the rod body part 30 is located on the arc surface 32. The plug 28 is provided with a through hole 31 for the rod body part 30 to pass through. The aperture of the through hole 31 is smaller than that of the movable block 292 to prevent the movable block 292 from detaching from the through hole 31. The unpacking member 29 further includes a rod cap 293, and the rod cap 293 is fixed to the end of the rod body part 30 away from the movable block 292. In this embodiment, it is shown that the top of the rod cap 293 also has an arc surface to optimize the hand feeling.

[0069] The specific working process of this solution is as follows:

[0070] In this technical solution, the switch mechanism 5 controls the pen refill 3 according to the switch state of the push switch 51. When the push switch 51 is in the closed state, the elastic force of the elastic member 4 pushes the pen refill 3 to maintain a tendency to be fully embedded in the pen cavity 2. Conversely, after the push switch 51 button is switched to the open state, it drives the adjusting rod 52 to rotate synchronously. Based on the guiding surface 8 of the adjusting rod 52 along the plunger member 53, when the adjusting rod 52 rotates, the acting force against the inclined surface is converted into a force to push the plunger member 53 to slide downward in the vertical direction. The plunger member 53 moves downward against the elastic force of the elastic member 4, and the elastic member 4 is compressed, so that the pen refill 3 is pushed out of the pen cavity 2, ensuring normal writing use, improving the convenience and operation stability of the extension and retraction of the pen refill 3. By arranging the push switch 51 in the installation groove 6 on the side wall of the pen barrel body 1, the pen refill 3 can be controlled by simply pressing the switch on the side wall without changing the pen-holding posture, improving the writing fluency and comfort, and thus making the operation more convenient.

[0071] The above shows and describes the basic principles, main features and advantages of this technical solution. Those skilled in the art should understand that this technical solution is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of this technical solution. Without departing from the spirit and scope of this technical solution, this technical solution will have various changes and improvements, and these changes and improvements all fall within the scope of this technical solution claimed. The scope of protection required by this technical solution is defined by the appended claims and their equivalents.

Claims

1. A side-pressure pen, comprising a pen barrel body (1), the pen barrel body (1) having a pen cavity (2), a pen outlet (35) provided at the front end of the pen cavity (2), a pen core (3) and an elastic member (4) provided in the pen cavity (2), the elastic member (4) being sleeved on the front end of the pen core (3), one end of the elastic member (4) abuting against the inner wall of the front end of the pen cavity (2), and the other end abutting against the front part of the pen core (3), characterized in that: A switch mechanism (5) is further provided in the pen cavity (2), the switch mechanism (5) comprising a push switch (51), an adjusting rod (52) hingedly arranged, and a plunger member (53) sliding in the pen cavity (2), an installation groove (6) being formed in the side wall of the pen barrel body (1), and the push switch (51) being swingably arranged in the installation groove (6); the push switch (51) can be switched between an open state and a closed state, and the push switch (51) acts on the adjusting rod (52) and drives the adjusting rod (52) to flip; The plunger member (53) has an inclined guiding surface (8), when the push switch (51) is closed, the elastic force of the elastic member (4) keeps the pen core (3) in the pen cavity (2), and when the push switch (51) is open, the adjusting rod (52) drives the plunger member (53) to slide through the guiding surface (8) for ejecting the pen core (3) from the pen cavity (2).

2. The side-pressure pen according to claim 1, wherein: The push switch (51) has an elastic connecting portion (9), the elastic connecting portion (9) extending towards the bottom of the installation groove (6), a fixing plate (10) being formed at the bottom of the installation groove (6), and a fixing hole (13) corresponding to the elastic connecting portion (9) being formed in the fixing plate (10) for the elastic connecting portion (9) to be embedded; The opposite sides of the elastic connecting portion (9) have limiting protrusions (14), and the limiting protrusions (14) can limit the elastic connecting portion (9) from disengaging.

3. The side-pressure pen according to claim 1, wherein: Both ends of the adjusting rod (52) along the hinge axis have a first abutting portion (15) and a second abutting portion (16), and the push switch (51) has a first pressing column (17) and a second pressing column (18) respectively arranged at both ends and acting on the first abutting portion (15) and the second abutting portion (16) in a one-to-one correspondence; The plunger member (53) is fitted with the upper end of the pen core (3), and the higher end of the guiding surface (8) has a positioning surface (21), and the positioning surface (21) has different inclined directions and angles relative to the guiding surface (8); Under the action of the second pressing column (18), the adjusting rod (52) rotates so that the second abutting portion (16) moves along the guiding surface (8), and the second abutting portion (16) has an abutting surface (20), and when the abutting surface (20) abuts against the positioning surface (21), it can limit the plunger member (53) from retracting.

4. The side-pressing pen according to claim 3, wherein: The second abutting portion (16) further has an abutting face (19), and when the abutting surface (20) abuts against the positioning surface (21), the abutting face (19) can be attached to the corresponding guiding surface (8); An included angle is formed between the abutting face (19) and the abutting surface (20).

5. The side-pressure pen according to claim 3, wherein: The plunger (53) is provided with a guide groove (22), the second abutting portion (16) is located in the guide groove (22), and the guide surface (8) is arranged at the bottom of the guide groove (22).

6. The side-pressing pen according to claim 1, characterized in that: The pen body (1) comprises a first rod body (11) and a second rod body (12), wherein the first rod body (11) and the second rod body (12) are separately connected so that the regulating rod (52) and the plunger (53) can be installed in the pen cavity (2) corresponding to the second rod body (12) through the connection; The plunger (53) has limit strips (23) protruding from opposite sides along the sliding direction, and the inner wall of the pen cavity (2) is formed with limit grooves (24) for the limit strips (23) to be embedded in a one-to-one correspondence.

7. The side-pressure pen according to claim 6, wherein: The regulating rod (52) has a hinge column (25), and the two ends of the hinge column (25) are embedded in the limiting grooves (24) on both sides in a one-to-one correspondence. The inner wall of the pen chamber (2) is protruded with a clamping strip portion (26), and the clamping strip portion (26) is arranged corresponding to the hinge column (25) for limiting.

8. The side-pressing pen according to claim 1, wherein: The upper end of the pen body (1) is provided with a fixing groove (27), a plug (28) is provided in the fixing groove (27), and a decompression member (29) is movably provided in the plug (28); The decompression member (29) includes a return spring (291), a movable block (292) and a rod cap (293); the movable block (292) has a rod body (30); the plug (28) is provided with a through hole (31) for the rod body (30) to pass through; and the rod cap (293) is arranged on the rod body (30); The return spring (291) is arranged between the movable block (292) and the bottom of the fixed groove (27). The size of the movable block (292) is larger than the aperture of the through hole (31). The elastic force of the return spring (291) causes the movable block (292) to abut against the inner wall of the plug (28).

9. The side pressure pen according to claim 8, wherein: The movable block (292) has a curved surface (32), and the inner wall of the plug head (28) is adapted to the curved surface (32).

10. The side-pressure pen according to claim 8, wherein: A guide block (33) is further provided in the plug (28), and the guide block (33) is slidably provided relative to the plug (28). The movable block (292) abuts against the guide block (33). A groove (34) is provided on a side of the guide block (33) facing away from the movable block (292) for embedding a reset spring (291). The length of the upper side of the hinge point of the regulating rod (52) is smaller than the length of the lower side of the hinge point.

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