Click pen with pen tip sealing structure

Abstract

The present invention discloses a push pen with a nib sealing structure, comprising: a pen barrel, an inner rod and a nib, wherein the inner rod is movably inserted in the pen barrel and is provided with a first return spring, the nib is installed at the lower end of the inner rod, the upper end of the pen barrel is hinged with a pen clip and a second return spring is installed therebetween, a locking structure is installed between the pen clip and the inner rod, and when the inner rod moves so that the nib extends out of the pen barrel, the locking structure locks the nib; a sealing structure for sealing the nib is installed between the inner rod and the pen barrel, and the sealing structure can be opened to avoid or closed to form a closed space on the nib when the nib moves. The push pen has a simple structure, is easy to assemble, can realize automatic retraction of the nib, is very convenient to use, will not easily cause damage to the nib or stain objects with ink, effectively prevents the evaporation of ink on the nib, and increases the service life of the pen.

Description

Technical Field

[0001] The invention relates to the technical field of writing tools, and in particular to a push pen with a pen head sealing structure. Background Art

[0002] As people's writing needs vary, more and more types of writing tools have emerged, including whiteboard pens, marker pens, fluorescent pens, and permanent markers, which supply ink through an ink storage core or an ink sac in the pen barrel, and the tail end of the nib is in direct contact with the ink in the ink storage core or the ink sac. The ink is adsorbed on the tail end of the nib and continuously transported to the writing head of the nib.

[0003] A push-type pen with a pen tip rebound function has the advantages of being easy to use and carry, and is therefore widely used. The pen clips of the push-type pens currently available on the market are generally fixedly connected to the pen barrel or integrally formed. When the user is carrying or not using the pen, the pen clip will generally clamp a book or other object, and the pen core may not rebound into the pen barrel, which may easily cause damage to the pen tip and staining of objects with ink. In addition, this type of push-type pen can only be used with inks with low volatility. For pens with high volatility inks such as fluorescent pens, marker pens, and marking pens, since the pen tip can automatically absorb ink, the ink on the pen tip is still in a volatile state even when not in use, resulting in ink loss and the pen tip is easy to dry up, making it impossible to use normally and shortening the service life of the pen. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a push pen with a nib sealing structure, which can not only prevent the pen tip from being damaged and the ink from staining objects due to forgetting to bounce the pen core back into the pen barrel, but also effectively seal the pen tip when not in use to prevent ink volatilization.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a click pen with a nib sealing structure, comprising: a pen barrel, an inner rod and a nib, the inner rod is movably inserted in the pen barrel and is provided with a first return spring, the nib is installed at the lower end of the inner rod, the upper end of the pen barrel is hinged with a pen clip and a second return spring is installed therebetween, a locking structure is installed between the pen clip and the inner rod, and when the inner rod moves so that the nib extends out of the pen barrel, it is locked by the locking structure; a sealing structure for sealing the nib is installed between the inner rod and the pen barrel, and the sealing structure can be opened for avoidance or closed to form a closed space on the nib when the nib moves.

[0006] As a further improvement of the present invention, the locking structure includes a slide with elastic deformation ability and a protrusion arranged on the inner rod, the protrusion is located in a guide groove arranged on the pen barrel, one end of the slide is fixed to the inner side of the pen clip, and the other end is provided with a first slide, a second slide and a slot connected between the first slide and the second slide, the protrusion can slide into the slot along the guide groove through the first slide, and accordingly make the pen tip protrude and lock it at the lower end of the pen barrel, and the protrusion can slide out from the slot through the second slide, and accordingly make the pen tip retract into the pen barrel.

[0007] As a further improvement of the present invention, the first slide includes a first inclined slide groove, the upper end of which is arranged opposite to the guide groove, and the first inclined slide groove has a first inclined surface and a second inclined surface arranged in an intersecting manner, the lower end of the first inclined surface is inclined toward the direction of the pen shaft, and the lower end of the second inclined surface is inclined toward a direction away from the card slot.

[0008] As a further improvement of the present invention, the second slide includes a stepped groove located on one side of the card slot, and the groove depth of the stepped groove is greater than the groove depth of the card slot. The card slot has a third inclined surface, and the lower end of the third inclined surface extends obliquely to the stepped groove.

[0009] As a further improvement of the present invention, a limit stopper is provided on the inner rod above the protrusion, and stoppers are provided on the opposite side walls of the guide groove. The limit stopper is movably located in the guide groove and can be stopped on the stopper.

[0010] As a further improvement of the present invention, the sealing structure includes a guide sleeve and a sealing sleeve, the guide sleeve is sleeved on the inner rod, the inner rod can drive the guide sleeve to move downward until the guide sleeve stops on the pen rod and the inner rod continues to move downward, and a through hole for the pen tip to move is provided at the bottom of the guide sleeve; the sealing sleeve is sleeved on the lower end of the inner rod and is located in the guide sleeve, the pen tip is located in the sealing sleeve and is opposite to the through hole, and the sealing sleeve is symmetrically provided with two rotatable sealing mouths, and under the elastic force of the first return spring, the guide sleeve drives the two sealing mouths to close through the through hole thereon.

[0011] As a further improvement of the present invention, a limiting groove and an elastic groove are arranged on the guide sleeve along the movement direction of the inner rod, and a limiting boss and a protrusion are arranged on the inner rod. The limiting boss is slidably placed in the limiting groove, and the elastic groove extends upward through the top of the guide sleeve to form a clamping opening end. The protrusion is abutted against the clamping opening end and can drive the clamping opening end to expand outward.

[0012] As a further improvement of the present invention, a fixing piece is installed on the sealing sleeve, the first return spring elastically rests between the fixing piece and a first step arranged on the inner rod, a second step is arranged along the inner wall of the pen shaft, and the fixing piece passes through the bottom of the limiting slide groove and stops on the second step.

[0013] As a further improvement of the present invention, the sealing sleeve is made of soft rubber material, the two sealing mouths are integrally formed and hinged on the sealing sleeve, and the two sealing mouths are closed to form a flattened inverted cone structure.

[0014] As a further improvement of the present invention, a pressing head for pressing is threadedly installed on the top of the inner rod.

[0015] The beneficial effects of the present invention are as follows: the present invention provides a push pen with a nib sealing structure, wherein a slide sheet with elastic deformation ability is installed on the pen clip, and the slide sheet is provided with a first slideway, a second slideway and a card slot connected between the first slideway and the second slideway. When in use, the push head is pressed to push the nib out of the pen shaft, so that the convex point on the inner rod slides into the card slot through the first slideway to be locked. When not in use, the push head is pressed again or the upper end of the pen clip is pressed to release the convex point in the card slot, so that the nib can automatically retract. The use is very convenient, and when the pen clip is clamped on an object such as a book, the inner rod cannot be locked by the slide sheet, and even in the locked state, it can be released due to the rotation of the pen clip, and the nib can automatically retract to the pen shaft. The invention has the advantages of simple structure, less parts, convenient assembly and saving production cost, etc. At the same time, a sealing sleeve which is sleeved on the outside of the pen tip is installed on the inner rod, and the sealing sleeve is provided with two sealing mouths which can be opened and closed. When the inner rod and the guide sleeve are used in conjunction, the pen tip can push open the two sealing mouths to avoid the extension and retraction movement, and the two sealing mouths are closed by the guide sleeve, thereby forming a closed space on the pen tip to prevent the ink on the pen tip from volatilizing, thereby ensuring the normal use of the pen tip and prolonging the service life of the pen, thereby realizing the pressing function for pens with higher volatility of ink. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A perspective view of the present invention;

[0017] Figure 2 is a cross-sectional view of the present invention;

[0018] Figure 3 A cross-sectional view of another direction of the present invention;

[0019] Figure 4 An exploded view of the present invention;

[0020] Figure 5A three-dimensional diagram of the assembly of the pen clip and the slide of the present invention;

[0021] Figure 6 This is a three-dimensional diagram of the present invention after removing the pen barrel and pen clip;

[0022] Figure 7 It is a schematic diagram of the structure of the pen holder of the present invention;

[0023] Figure 8 A three-dimensional diagram of a guide sleeve of the present invention;

[0024] Fig. 9 A three-dimensional diagram of the sealing sleeve of the present invention in a closed state;

[0025] Fig.10 This is a three-dimensional view of the sealing sleeve of the present invention in an open state.

[0026] Combined with the accompanying drawings, the following description is given:

[0027] 1——penholder; 101——guide groove;

[0028] 1011——Blocking platform; 102——Second step;

[0029] 2——Inner rod; 201——Bump;

[0030] 202——limit stopper; 203——limit boss;

[0031] 204——bump; 205——first step;

[0032] 3 – pen tip; 4 – pen clip;

[0033] 5——first return spring; 6——sliding plate;

[0034] 601——card slot; 6011——third inclined surface;

[0035] 602——first inclined chute; 6021——first inclined surface;

[0036] 6022——second inclined surface; 603——step groove;

[0037] 7——Second return spring; 8——Guide sleeve;

[0038] 801——through hole; 802——limiting slide groove;

[0039] 803——elastic slide; 8031——clamping open end;

[0040] 9——sealing sleeve; 901——sealing mouth;

[0041] 10——fixing part; 11——press head. DETAILED DESCRIPTION

[0042] A preferred embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.

[0043] See also Figures 1 to 10 The present invention provides a push pen with a nib sealing structure, comprising: a pen barrel 1, an inner rod 2 and a nib 3. The inner rod 2 is movably inserted in the pen barrel 1, and a first reset spring 5 is mounted on the lower end of the inner rod 2 to provide elastic force when the inner rod 2 is reset. The inner rod 2 has a hollow inner cavity for placing an ink storage core. The nib 3 is mounted on the lower end of the inner rod 2, and the tail end of the nib 3 extends upward to contact the ink storage core. The ink on the ink storage core is continuously transported to the writing head of the nib 3. A press head 11 is installed on the top of the inner rod 2. The press head 11 is installed on the inner rod 2 in a threaded manner and can be easily disassembled to replace the ink storage core. The press head 11 protrudes from the top of the pen barrel 1, which is convenient for pressing, and the nib 3 is pushed out of the pen barrel 1 through the inner rod 2.

[0044] See also Figure 2 The pen holder 1 is provided with a pen clip 4 at the upper end thereof. The pen clip 4 is provided with two opposite pins near the upper end thereof. The two pins are hinged on the pen holder 1 so that the pen clip 4 can rotate around the pins. The pen clip 4 is provided with a positioning pin on the inner side above the pin. The positioning pin is provided with a second return spring 7. The two ends of the second return spring 7 are elastically placed between the pen holder 1 and the pen clip 4. The pen holder 1 is provided with a pin hole corresponding to the positioning pin to avoid the movement of the positioning pin. Under the elastic force of the second return spring 7, the lower end of the pen clip 4 has a tendency to always move toward the pen holder 1.

[0045] See also Figure 2 , Figure 5 and Figure 6A locking structure is installed between the pen clip 4 and the inner rod 2. When the inner rod 2 moves to make the pen tip 3 extend out of the pen barrel 1, the locking structure locks it. Specifically, the locking structure includes a slide 6 with elastic deformation ability and a convex point 201 arranged on the inner rod 2. The slide 6 is installed on the inner side of the pen clip 4. The slide 6 has a T-shaped mounting rod located at the upper part and a locking part located at the lower part. A limited card slot is arranged on the inner side of the pen clip 4. The upper end of the mounting rod is fixed in the limited card slot. The locking part of the slide 6 is in a free state and can swing left and right according to its own elastic deformation. There is a space for the locking part to undergo elastic deformation on the pen clip 4. A guide groove 101 is arranged on the pen barrel 1, which is directly opposite to the slide 6. The convex point 201 is slidably located in the guide groove 101. The convex point 201 is hexagonal, has two upper and lower tips and two left and right vertical surfaces that slide with the guide groove 101, and the width of the left and right vertical surfaces of the convex point 201 is slightly smaller than the width of the guide groove 101. The locking part of the slide 6 is provided with a first slideway, a second slideway and a slot 601 connected between the first slideway and the second slideway on one side of the pen barrel 1. Pressing the push head 11 pushes the inner rod 2 downward, so that the protrusion 201 can slide into the slot 601 along the guide groove 101 through the first slideway, and the pen tip 3 is protruded and locked at the lower end of the pen barrel 1. By pressing the push head 11 again, the inner rod 2 moves upward under the elastic force of the first return spring 5, so that the protrusion 201 can slide out of the slot 601 through the second slideway, and the pen tip 3 is retracted into the pen barrel 1. In addition, the second return spring 7 can be compressed by pressing the upper end of the pen clip 4, and the lower end of the pen clip 4 drives the slide 6 to turn outward synchronously, thereby releasing the protrusion 201, and the pen tip 3 can also be retracted into the pen barrel 1 under the elastic force of the first return spring 5. By adopting this structural design, the inner rod 2 is locked by the slide 6 installed on the pen clip 4. When the pen is not in use, the pen is clamped on an object such as a book, so that the inner rod 2 cannot be locked by the slide 6, which can prevent the user from forgetting to retract the pen tip into the pen case, and will not easily cause damage to the pen tip or staining of objects with ink.

[0046] For details, see Figure 5The first slideway and the second slideway are respectively located on both sides of the card slot 601, and the card slot 601 is located at the central axis of the slide 6 and is directly opposite to the guide slot 101. The first slideway includes a first inclined slideway 602, the upper end of which extends to the top of the card slot 601 and is directly opposite to the guide slot 101, so that the protrusion 201 can slide into the first inclined slideway 602. The first inclined slideway 602 has a first inclined surface 6021 and a second inclined surface 6022 arranged in an intersecting manner, the lower end of the first inclined surface 6021 is inclined toward the direction of the pen holder 1, and the lower end of the second inclined surface 6022 is inclined toward the direction away from the card slot 601. When the push head 11 is pressed, the protrusion 201 slides downward along the first inclined groove 602, and is placed on the first inclined surface 6021, pushing the slide plate 6 to drive the lower end of the pen clip 4 to rotate outward, and at the same time, the protrusion 201 pushes the slide plate 6 to elastically deform and deviate to one side through the second inclined surface 6022; when the protrusion 201 continues to move downward, it slides out of the first inclined groove 602 and falls into one side of the slot 601. Under the elastic force of the first reset spring 5, the protrusion 201 slides along the inclined surface of one side of the inverted V-shaped structure at the upper end of the slot 601 and finally stops at the top tip of the slot 601, and at the same time, the slide plate 6 is reset under its own elastic action. The second slide includes a stepped groove 603, and the groove depth of the stepped groove 603 is greater than the groove depth of the slot 601. The card slot 601 has a third inclined surface 6011 at the lower end. It can be understood that the third inclined surface 6011 is an upper inclined side surface of a step set in the card slot 601, and the lower end of the third inclined surface 6011 extends obliquely to the stepped groove 603. When the pressing head 11 is pressed again, the protrusion 201 moves downward along the third inclined surface 6011, and the slide 6 is pushed by the third inclined surface 6011 to undergo elastic deformation and deflect toward the other side, and then continues to move and fall into the stepped groove 603; when the pressing head 11 is released, under the elastic force of the first reset spring 5, the protrusion 201 slides upward along the stepped groove 603 to disengage from the slide 6, so that the pen tip 3 retracts into the pen body 1, and the slide 6 is reset under its own elastic action. This arrangement has the advantages of simple structure, less number of parts, convenient assembly of each part, and saving production cost.

[0047] It is worth mentioning that the lower gap of the guide groove 101 opposite to the locking portion of the slide 6 can be enlarged to form a locking zone groove. When the inner rod 2 is pressed to move downward, after the protrusion 201 slides to the locking zone groove, the inner rod 2 rotates slightly under the cooperation of the protrusion 201 and the locking portion of the slide 6, which is more conducive to the protrusion 201 falling into the slot 601. By setting the top of the locking zone groove of the guide groove 101 into an "eight" shape, it is easy for the protrusion 201 to slide upward from the locking zone to the upper part of the guide groove 101, and the inner rod 2 rotates and resets.

[0048] See also Figure 6 and Figure 7A limit stopper 202 is also provided on the inner rod 2 above the protrusion 201, and a stopper 1011 is provided on the opposite side walls of the guide groove 101. The limit stopper 202 is movably located in the guide groove 101 and can be stopped at the bottom of the stopper 1011, so as to limit the upward movement of the inner rod 2 and prevent the inner rod 2 from separating from the pen body 1.

[0049] See also Figure 3 , Figure 4 , Figure 8 , Fig. 9 and Fig.10 A sealing structure for sealing the nib 3 is installed between the inner rod 2 and the pen barrel 1. The sealing structure can be opened when the nib 3 moves so that the nib 3 can be extended and retracted to avoid the position or closed to form a closed space on the nib 3. The sealing structure includes a guide sleeve 8 and a sealing sleeve 9. The guide sleeve 8 is sleeved on the lower part of the inner rod 2. The upper end of the guide sleeve 8 is located in the middle of the inner rod 2. The bottom of the guide sleeve 8 extends to the bottom of the inner rod 2 and leaves a movement space between the bottom end of the pen barrel 1. The bottom of the guide sleeve 8 is provided with a through hole 801 for the nib 3 to move. The inner rod 2 can drive the guide sleeve 8 to move downward until the guide sleeve 8 stops on the pen barrel 1 and the inner rod 2 continues to move downward. The sealing sleeve 9 is sealed and sleeved on the lower end of the inner rod 2 and can slide relatively. The sealing sleeve 9 is located in the guide sleeve 8. The nib 3 is located in the sealing sleeve 9 and faces the through hole 801. The sealing sleeve 9 is symmetrically provided with two rotatable sealing mouths 901, and the outer sides of the two sealing mouths 901 are against the inner wall of the through hole 801. Under the elastic force of the first return spring 5, the guide sleeve 8 drives the two sealing mouths 901 to close through the through hole 801 thereon, thereby forming a closed space on the pen tip 3 to prevent the ink on the pen tip 3 from volatilizing, ensure the normal use of the pen tip 3, and increase the service life of the pen.

[0050] Specifically, two limiting grooves 802 are symmetrically arranged on the guide sleeve 8 along the moving direction of the inner rod 2, and two limiting bosses 203 are symmetrically arranged at the middle of the inner rod 2. The two limiting bosses 203 are slidably matched in the two limiting grooves 802. Two elastic grooves 803 are symmetrically arranged on the guide sleeve 8 along the moving direction of the inner rod 2. The elastic grooves 803 extend upward and penetrate the top of the guide sleeve 8 to form a clamping opening end 8031. The clamping opening end 8031 ​​has two protrusions arranged oppositely. Two protrusions 204 are symmetrically arranged at the middle of the inner rod 2. The lower tips of the two protrusions 204 are correspondingly placed on the protrusions of the two clamping opening ends 8031, and the protrusions 204 can drive the clamping opening end 8031 ​​to undergo elastic deformation and expand outward. The sealing sleeve 9 is provided with a fixing part 10. The sealing sleeve 9 is symmetrically provided with two clamping platforms along the outer wall. The fixing part 10 is provided with two side ear grooves in the center. The two side ear grooves are clamped on the two clamping platforms one by one, and the top of the sealing sleeve 9 is against the inner bottom of the fixing part 10. The pen barrel 1 is provided with a second step 102 along the inner wall. The bottoms of the two side ear grooves of the fixing part 10 pass through the limiting slide groove 802 and stop on the second step 102, so that the guide sleeve 8 can move relative to the fixing part 10 and the sealing sleeve 9. The upper end of the first return spring 5 elastically abuts on the first step 205 provided on the inner rod 2, and the lower end of the first return spring 5 elastically abuts on the top of the fixing part 10. The first return spring 5 always has a downward elastic force on the fixing part 10, so that the fixing part 10 presses the sealing sleeve 9 against the second step 102.

[0051] The sealing sleeve 9 is provided with an annular sleeve located at the upper part, and two annular convex ribs are provided along the inner wall of the annular sleeve, and the annular convex ribs are sealed and attached to the outer side of the inner rod 2. The sealing sleeve 9 is made of soft rubber material, and the two sealing nozzles 901 are integrally formed and connected with the annular sleeve, and one side of the sealing nozzles 901 is hinged to the annular sleeve through a thin wall. When the two sealing nozzles 901 are closed, they are in a flattened inverted cone structure, and the inside is a cavity for accommodating the pen tip 3. The sealing sleeve 9 is sealed with the inner rod 2 at the top through the annular convex rib to ensure the upper sealing, and the two sealing nozzles 901 are squeezed and closed to ensure the lower sealing, thereby achieving a better sealing effect.

[0052] In addition, guide ribs extending to the periphery of the through hole 801 are arranged along the inner wall of the lower portion of the guide sleeve 8, and the guide ribs gradually thicken from top to bottom, so that during rebound, the two open sealing mouths 901 are guided by the guide ribs to approach each other until the sealing mouths 901 are pressed closed by the through hole 801.

[0053] The present embodiment is further described, and its sealing principle is as follows: when in use, the inner rod 2 is pushed downward by pressing the push head 11, the first return spring 5 is compressed, and the inner rod 2 first pushes the guide sleeve 8 to move downward until the guide sleeve 8 stops at the bottom of the pen barrel 1 under the clamping opening end 8031 ​​of the guide sleeve 8, and then the inner rod 2 continues to move downward, and the protrusion 204 is inserted into the elastic slide groove 803 to expand it; during the downward movement of the guide sleeve 8, the through hole 801 thereon is separated from the sealing sleeve 9, and no longer squeezes the two sealing nozzles 901, at this time, the inner rod 2 drives the pen head 3 to move downward, the pen head 3 pushes open the two sealing nozzles 901 and extends out of the lower end of the pen barrel 1, and the inner rod 2 is locked by the locking structure, and the pen can be used; When not in use, by pressing the push head 11 again or pressing the upper end of the pen clip 4, the protrusion 201 on the inner rod 2 is released in the slot 601. Under the elastic force of the first return spring 5, the inner rod 2 and the pen tip 3 move upward synchronously for a certain distance until the two limit bosses 203 of the inner rod 2 are respectively stopped on the top walls of the two limit slide grooves 802 of the guide sleeve 8. Then the inner rod 2 drives the guide sleeve 8 to move upward synchronously until the limit block 202 of the inner rod 2 is stopped on the stop 1011 of the pen shaft 1. During this process, the pen tip 3 first retracts into the sealing sleeve 9, and the through hole 801 of the guide sleeve 8 begins to contact the outside of the two sealing mouths 901. When continuing to move upward, the through hole 801 squeezes the two sealing mouths 901 to make them close to each other, thereby sealing the pen tip 3.

[0054] It can be seen that the present invention provides a push pen with a nib sealing structure, wherein a slide plate with elastic deformation ability is installed on the pen clip, and the slide plate is provided with a first slide track, a second slide track and a slot connected between the first slide track and the second slide track. When in use, the push head is pressed to push the nib out of the pen shaft, so that the convex point on the inner rod slides into the slot through the first slide track to be locked. When not in use, the push head is pressed again or the upper end of the pen clip is pressed to release the convex point in the slot, so that the nib automatically retracts. The use is very convenient. When the pen clip is clamped on an object such as a book, the inner rod cannot be locked by the slide plate. Even in the locked state, the nib will be released due to the rotation of the pen clip, and the nib will automatically retract into the pen shaft, thereby The invention effectively prevents the user from forgetting to retract the pen tip into the pen case, and will not easily cause damage to the pen tip, staining of items with ink, etc., and also has the advantages of simple structure, fewer parts, easy assembly, and reduced production costs. At the same time, a sealing sleeve is installed on the inner rod and is sleeved on the outer side of the pen tip. The sealing sleeve is provided with two sealing nozzles that can be opened and closed. Under the linkage and cooperation of the inner rod and the guide sleeve, the pen tip can push open the two sealing nozzles to avoid the extension and retraction movement, and the two sealing nozzles are driven by the guide sleeve to close, thereby forming a closed space on the pen tip, preventing the ink on the pen tip from volatilizing, ensuring the normal use of the pen tip, and prolonging the service life of the pen, thereby realizing the pressing function for pens with relatively high volatility of ink.

[0055] Many specific details are described in the above description to facilitate a full understanding of the present invention. However, the above description is only a preferred embodiment of the present invention. The present invention can be implemented in many other ways different from those described herein, so the present invention is not limited to the specific implementation disclosed above. At the same time, any person familiar with the art can make many possible changes and modifications to the technical solution of the present invention using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. A push pen with a pen tip sealing structure, comprising a pen holder (1), an inner rod (2) and a pen tip (3), wherein the inner rod (2) is movably inserted in the pen holder (1) and is provided with a first return spring (5), and the pen tip (3) is mounted at the lower end of the inner rod (2), characterized in that: The upper end of the pen shaft (1) is hingedly connected with a pen clip (4) and a second return spring (7) is installed therebetween; a locking structure is installed between the pen clip (4) and the inner rod (2); when the inner rod (2) moves so that the pen tip (3) extends out of the pen shaft (1), the locking structure locks the pen tip (3); a sealing structure for sealing the pen tip (3) is installed between the inner rod (2) and the pen shaft (1); the sealing structure can be opened to avoid the position or closed to form a closed space on the pen tip (3) when the pen tip (3) moves; The locking structure comprises a slide plate (6) with elastic deformation capability and a convex point (201) arranged on the inner rod (2); the convex point (201) is located in a guide groove (101) arranged on the pen holder (1); one end of the slide plate (6) is fixed to the inner side of the pen clip (4); and the other end is provided with a first slideway, a second slideway and a slot (601) connected between the first slideway and the second slideway; the convex point (201) can be moved along the guide groove (101) to prevent the convex point (201) from sliding into the inner rod (2); and the convex point (201) can be moved along the guide groove (101) to prevent the convex point (201) from sliding into the inner rod (2). 01) slides into the slot (601) through the first slide, thereby causing the pen tip (3) to protrude and be locked at the lower end of the pen shaft (1), and the protrusion (201) can slide out of the slot (601) through the second slide, thereby causing the pen tip (3) to retract into the pen shaft (1); wherein, in the process of the protrusion (201) sliding into and out of the slot (601), the slide sheet (6) can be forced to produce elastic deformation and swing left and right.

2. The click pen with a pen tip sealing structure according to claim 1, characterized in that: The first slideway comprises a first inclined slide groove (602), an upper end of the first inclined slide groove (602) being arranged opposite to the guide groove (101), the first inclined slide groove (602) having a first inclined surface (6021) and a second inclined surface (6022) arranged to intersect each other, the lower end of the first inclined surface (6021) being inclined toward the direction of the pen holder (1), and the lower end of the second inclined surface (6022) being inclined toward a direction away from the card slot (601).

3. The click pen with a pen tip sealing structure according to claim 1, characterized in that: The second slideway comprises a stepped groove (603) located on one side of the slot (601), and the groove depth of the stepped groove (603) is greater than the groove depth of the slot (601), and the slot (601) has a third inclined surface (6011), and the lower end of the third inclined surface (6011) extends obliquely onto the stepped groove (603).

4. The click pen with a pen tip sealing structure according to claim 1, characterized in that: A limit stopper (202) is also provided on the inner rod (2) above the protruding point (201), and stoppers (1011) are provided on opposite side walls of the guide groove (101). The limit stopper (202) is movably located in the guide groove (101) and can be stopped on the stoppers (1011).

5. The click pen with a pen tip sealing structure according to claim 1, characterized in that: The sealing structure comprises a guide sleeve (8) and a sealing sleeve (9); the guide sleeve (8) is sleeved on the inner rod (2); the inner rod (2) can drive the guide sleeve (8) to move downward until the guide sleeve (8) stops on the pen shaft (1) and the inner rod (2) continues to move downward; a through hole (801) for the pen tip (3) to move is arranged at the bottom of the guide sleeve (8); the sealing sleeve (9) is sleeved on the lower end of the inner rod (2) and is located in the guide sleeve (8); the pen tip (3) is located in the sealing sleeve (9) and is opposite to the through hole (801); the sealing sleeve (9) is symmetrically provided with two rotatable sealing nozzles (901); under the elastic force of the first return spring (5), the guide sleeve (8) drives the two sealing nozzles (901) to close through the through hole (801) thereon.

6. The click pen with a pen tip sealing structure according to claim 5, characterized in that: A limiting groove (802) and an elastic groove (803) are provided on the guide sleeve (8) along the movement direction of the inner rod (2); a limiting boss (203) and a convex block (204) are provided on the inner rod (2); the limiting boss (203) is slidably placed in the limiting groove (802); the elastic groove (803) extends upward through the top of the guide sleeve (8) and forms a clamping opening end (8031); the convex block (204) abuts against the clamping opening end (8031) and can drive the clamping opening end (8031) to expand outward.

7. The click pen with a pen tip sealing structure according to claim 6, characterized in that: A fixing member (10) is installed on the sealing sleeve (9), the first return spring (5) is elastically pressed between the fixing member (10) and a first step (205) provided on the inner rod (2), a second step (102) is provided along the inner wall of the pen shaft (1), and the fixing member (10) passes through the bottom of the limiting sliding groove (802) and stops on the second step (102).

8. The click pen with a pen tip sealing structure according to claim 5, characterized in that: The sealing sleeve (9) is made of soft rubber material, the two sealing nozzles (901) are integrally formed and hinged on the sealing sleeve (9), and the two sealing nozzles (901) are closed to form a flattened inverted cone structure.

9. The click pen with a pen tip sealing structure according to claim 1, characterized in that: A pressing head (11) for pressing is threadedly mounted on the top of the inner rod (2).

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