CN118372577A

CN118372577A - Press type pen

Info

Publication number: CN118372577A
Application number: CN202410375741.1A
Authority: CN
Inventors: 崔玉明; 金博洋; 王同勋
Original assignee: Wenzhou Aihao Pen Trade Co ltd
Current assignee: Wenzhou Aihao Pen Trade Co ltd
Priority date: 2024-03-29
Filing date: 2024-03-29
Publication date: 2024-07-23

Abstract

The invention discloses a pressing type pen tool which comprises a pen holder, a pen core arranged in the pen holder, a spring and a telescopic locking mechanism, wherein a button is arranged at the rear end of the pen holder, the spring is propped between the pen core and the pen holder, the telescopic locking mechanism is arranged between the pen core and the button in a linkage manner, the pen core is matched with a speed reducing mechanism, and the speed reducing mechanism is used for at least reducing the movement speed of the pen core towards the direction of retracting the pen core. The invention can at least reduce the movement speed of the refill towards the refill shrinking direction, reduce the speed and impact force when the refill shrinks and moves, reduce noise and prolong the service life of the refill.

Description

Press type pen

Technical Field

The invention relates to a pressing pen.

Background

The automatic ball pen comprises a pen holder, a pen core, a spring, a button, a telescopic locking mechanism and other components, wherein the pen core, the spring and the telescopic locking mechanism are arranged inside the pen holder, the spring is propped between the front end of the pen core and the pen holder, the telescopic locking mechanism is propped between the front end of the button and the rear end of the pen core, the front end of the pen core is provided with a core outlet hole, the telescopic locking mechanism comprises a push rod, a rotary table and a sliding groove arranged inside the pen holder, wherein the rear end of the push rod is propped against the front end of the button, the rotary table is arranged at the rear end of the pen core and is in pushing fit with the front end of the push rod, the rotary table can rotate and form axial limit fit or release through the sliding groove, when the push rod is pushed, the pointed characteristic of the front end of the push rod and the inclined surface contact part of the rotary table cause the rotary table to rotate, the pen core is kept at the extended position through the limit fit of the rotary table and the front part of the sliding groove when the push rod is pushed again, and the rotary table is driven by the spring to retract back into the rotary table through the rotary table. Thus, the front end of the driving pen core can be switched to extend forwards or retract backwards from the core outlet by pressing and releasing the button.

Because the elastic force of the spring is usually larger, the refill has a faster movement speed in the backward movement process, and then the refill is suddenly stationary, the refill can generate a certain impact, the slight upward surge of the ink in the ink tube of the refill is easy to cause, the ink is unevenly distributed, the pen has the possibility of ink interruption and ink leakage during writing after long-term use, and particularly, the situation is more obvious for some users who like frequent pressing operation. In addition, this also results in the cartridge being prone to produce a "click" sound during the pressing operation, with a loud noise.

Disclosure of Invention

The invention provides a pressing type pen tool, which comprises a speed reducing mechanism capable of at least reducing the movement speed of a refill in the refill shrinking direction, so that the speed and impact force of the refill during refill shrinking movement are reduced, noise is reduced, and the service life of the refill is prolonged.

The invention provides a pressing type pen tool which comprises a pen holder, a pen core arranged in the pen holder, a spring and a telescopic locking mechanism, wherein a button is arranged at the rear end of the pen holder, the spring is propped between the pen core and the pen holder, the telescopic locking mechanism is arranged between the pen core and the button in a linkage manner, the pen core is matched with a speed reducing mechanism, and the speed reducing mechanism is used for at least reducing the movement speed of the pen core towards the direction of retracting the pen core.

In a first specific scheme of the invention, the speed reducing mechanism comprises a spiral chute and a slide block, the slide block and the chute form guide sliding fit, a refill supporting part is in abutting limit fit with the rear end of the refill, the refill supporting part can be a part which is relatively independent of the telescopic locking mechanism and plays a role in transmission, and the refill supporting part is abutted between the telescopic locking mechanism and the rear end of the refill; or the sliding groove and the sliding block are respectively arranged on the pen core/the pen holder and the pen holder/the pen core, and the pen core and the pen holder can rotate relatively.

When the pen core or the pen core supporting part moves forwards and backwards along the axial direction of the pen, the sliding block and the sliding groove between the pen core supporting part/the pen core and the pen holder can be matched for spiral movement, so that the pen core supporting part/the pen core can rotate while moving axially relative to the pen holder, the matching mode can slow down the axial movement speed of the pen core along the pen, the pen core can not generate impact in the telescopic process, the pen core is protected, the possibility of ink leakage and ink breakage after the pen is used for a long time is reduced, and the noise generated during telescopic operation of the pen core can be reduced.

Further, the front end of the pen core supporting part is integrally formed with a sleeve, the sleeve at the front end of the pen core supporting part is sleeved with the rear end of the ink tube of the pen core, and the sliding groove and the sliding block are respectively arranged on the outer peripheral wall of the sleeve/the inner peripheral wall of the pen holder and the inner peripheral wall of the pen holder/the outer peripheral wall of the sleeve.

In the scheme, the moving speed of the pen core is indirectly slowed down by slowing down the moving speed of the pen core supporting part, the speed reducing mechanism is arranged between the sleeve of the pen core supporting part and the pen holder, on one hand, the inner space of the pen can be reasonably utilized, the structure of the pen is more compact, and on the other hand, the structure of the pen core cannot be influenced, so that the pen core structure is applicable to standard pen cores which can be purchased in the market, preferably, the sliding groove is arranged on the outer peripheral wall of the sleeve, and the sliding block is arranged on the inner peripheral wall of the pen holder, so that the processing difficulty of the pen can be reduced.

Further, the sleeve and the pen core supporting part are integrally formed, so that the structure can be simplified, and the processing and the assembly are convenient.

As another alternative, the pen core is provided with a sleeve, and the sliding groove and the sliding block are respectively arranged on the outer peripheral wall of the sleeve/the inner peripheral wall of the pen holder and the inner peripheral wall of the pen holder/the outer peripheral wall of the sleeve. Through the cooperation of spout and slider, can slow down telescopic travel speed, and then indirect slow down the travel speed of refill.

Further, the sleeve is an integral part of the cartridge, for example, the sleeve is integrally formed on the cartridge, and the sleeve needs to be replaced together with the cartridge when the cartridge is replaced. Alternatively, the sleeve and the cartridge may form a detachable connection, for example a snap-fit or screw-fit. When the refill needs to be replaced, the sleeve and the refill are detached, and the refill is replaced independently.

Further, the sliding grooves and the sliding blocks are correspondingly arranged at least two, the at least two sliding grooves are distributed in a staggered mode along the axial direction, the sliding blocks are correspondingly guided and matched with the sliding grooves in a sliding mode, the sliding grooves are provided with inlets for the sliding blocks to be placed in, the inlets of the sliding grooves are arranged at the same position along the axial direction of the pen and are uniformly distributed along the axial direction of the pen in the circumferential direction, and the sliding blocks are also arranged at the same position along the axial direction of the pen and are uniformly distributed along the axial direction of the pen in the circumferential direction.

The design can make the atress more even between two parts that carry out the complex through spout and slider, makes the difficult slope that produces when two relative motion, skew, therefore is difficult to appear blocking.

In a second specific scheme of the invention, an annular gap is formed between the pen core and the pen holder, the speed reducing mechanism comprises a lantern ring which is arranged in the gap and can move forwards and backwards along the axial direction of the pen, and an elastic component which is in abutting fit with the lantern ring and provides elastic acting force for the lantern ring to move backwards, the lantern ring is sleeved outside the pen core, the lantern ring comprises a clamping part which is clamped with the pen core in a matched mode, and the inner side of the pen holder is provided with a limiting part which can abut against the clamping part when the lantern ring moves backwards and promote the clamping part to further clamp the pen core.

When the pen core is driven to move forwards, the clamping acting force between the clamping part of the lantern ring and the pen core can be used for driving the lantern ring to move forwards, so that the clamping part of the lantern ring is separated from the limiting part, the elastic part is pressed to deform and store energy, and when the elastic acting force given to the lantern ring by the elastic part is larger than the friction force between the clamping part and the pen core, the clamping part and the pen core can slide relatively, so that the lantern ring cannot move forwards continuously along with the pen core; when the pen core is driven to move backwards, the elastic acting force of the elastic component and the clamping acting force between the clamping part of the collar and the pen core are utilized to drive the collar to move backwards, the clamping part of the collar is pushed against the limiting part of the pen holder, the clamping part is further pushed to clamp the pen core through the matching of the clamping part and the limiting part, the resistance of the pen core in retreating can be increased, the moving speed of the pen core in retreating is reduced, the pen core can not generate impact in telescopic movement, the pen core is protected, the possibility of ink leakage and ink breakage of the pen after long-term use is reduced, and the noise of the pen core in telescopic operation can be reduced.

Further, the lantern ring is including the base of tube-shape, clamping part is including the clamping jaw of a plurality of integrated into one piece at the base rear end, the clamping jaw sets up along the axle center circumference equipartition of lantern ring, and the setting of a plurality of clamping jaws makes the atress more even between lantern ring and the refill, improves the cooperation effect between lantern ring and the refill, has the opening between the circumferentially adjacent clamping jaw, can improve the elastic deformation effect of clamping jaw, limit part is including setting up the annular flange in pen-holder inner peripheral wall department, improves the cooperation effect between a plurality of clamping jaws.

Further, the outside of clamping jaw is provided with the step that constitutes along axial spacing complex with annular flange in corresponding root position, can play spacing effect, forbids the stroke of lantern ring backward motion, avoids appearing the dead problem of refill card.

Further, the outer side of the clamping jaw is provided with a conical matching surface which is in matched contact with the annular flange. The clamping jaw is in contact fit with the annular flange through the conical fit surface at the outer side of the clamping jaw, so that the force application fit effect of the clamping jaw on the annular flange can be improved, and the clamping effect of the clamping jaw on the pen core is improved.

Further, the elastic component comprises a spring sleeved on the outer side of the pen core, the rear end of the spring is in abutting fit with the front end of the base, elastic acting force for enabling the lantern ring to move backwards is given to the pen holder, and the pen holder comprises a supporting portion in abutting fit with the front end of the spring and used for limiting the front end of the spring.

Further, the pen holder comprises a rod part and an end cover arranged at the front end of the rod part, a core outlet is formed in the end cover, the end cover comprises an insertion part which is arranged on the inner side of the rod part in a screwed mode, the support part is formed by the rear end of the insertion part, the spring can be arranged in the pen holder from the front end of the rod part, and the insertion part is inserted into the inner side of the rod part and forms support fit with the front end of the spring when the end cover is arranged at the front end of the rod part, so that the pen holder is simple in structure and convenient to assemble. Of course, in other solutions, the supporting portion may be directly integrally formed on the inner side of the pen holder.

Further, the lantern ring is in sleeve connection with the ink tube of the pen core, so that the internal space of the pen is reasonably utilized, and the whole structure of the pen is more compact.

In a third specific scheme of the invention, the speed reducing mechanism comprises a damping part arranged on one part of the pen holder and the pen core, the damping part and the one part form positioning fit at least along the axial direction of the pen, and the damping part and the other part form sliding contact fit to provide damping for the movement of the pen core along the axial direction of the pen. The friction resistance between the damping part and the other part is improved based on the roughness of the contact surface between the damping part and the other part or the pressure during contact, so that the movement speed of the refill is reduced when the refill is driven by the spring to realize rebound movement, the impact on the refill is reduced, the service life of the refill is prolonged, the possibility of ink leakage and ink breakage of the pen after long-term use is reduced, and the noise during telescopic operation of the refill can be reduced.

The fact that the damping part and one of the parts form a positioning fit at least along the axial direction of the pen means that the damping part and one of the parts can only be in a limiting fit relationship along the axial direction of the pen, for example, the damping part and the one of the parts can also rotate along the axis of the pen; it may also mean that the fixation is complete, e.g. rotation is also inhibited; it may also be referred to as a damping member and one of the members being integrally formed.

Further, the damping part is an annular part, the axis position of the damping part comprises a connecting hole, the pen core is arranged in the connecting hole of the damping part in a penetrating mode, an annular groove is formed between the pen holder and the pen core, and the damping part is embedded in the groove.

The damping part adopts annular structure, can improve its and contact cooperation effect between another part, makes the atress more even, avoids producing the card and detains.

Further, the pen holder is including the first part, the second part that is connected, wherein, circumference is provided with annular flange in the hole of first part, the second part is including the annular insert portion of pegging graft with the hole cooperation of first part, the recess comprises annular flange, the inner peripheral wall of first part and the insert portion of second part, the outer peripheral wall of damping part and the spacing cooperation of the inner peripheral wall butt of first part avoid damping part to produce radial removal, damping part's axial one end and annular flange butt spacing cooperation, damping part's axial other end and the spacing cooperation of insert portion butt of second part avoid damping part to produce axial removal, connecting hole's inner peripheral wall and refill constitute sliding contact cooperation for the removal of refill provides the damping.

The structure of the groove is arranged on the pen holder, the damping part is positioned on the pen holder, the groove is formed by connecting two parts, the processing and the manufacturing of the groove are facilitated, the installation of the damping part is also facilitated, the structure of the pen core is simplified, and the implementation of the scheme is facilitated. In other embodiments, the recess may be provided in the cartridge.

Further, the annular flange comprises a conical surface in abutting limit fit with one axial end of the damping component, an annular groove is formed between the outer side of the conical surface and the inner peripheral wall of the first part, and part of the damping component is embedded into the groove. The setting of slot can improve the location installation effect to damping part, prevents that damping part from receiving the refill influence to deviate from deformation in the recess.

Further, a plurality of annular convex ribs are arranged on the outer peripheral wall of the damping component at intervals along the axial direction, the damping component is in contact fit with the inner wall of the pen holder through the annular convex ribs, the contact area between the damping component and the pen holder can be reduced, deformation of the damping component can be reduced in the process of inserting and installing the damping component into the pen holder, and installation of the damping component is facilitated. In addition, when the pen holder adopts transparent material, can be by the outside obvious impression that produces of damping part and pen holder butt pressure of pen holder, adopt a plurality of annular protruding muscle and pen holder cooperation contact, observe from pen holder 1 outside and can see a plurality of annular impressions, improve the aesthetic property.

Further, the inner peripheral wall of the connecting hole is arc-shaped along the axial section, the aperture of the connecting hole is gradually reduced from the axial middle position to the two ends, the requirement on the processing precision of the damping part can be reduced through arc-shaped profile design, the middle position of the damping part is contacted with the pen core, the matching effect of the damping part and the pen core is improved, and the damping part is not easy to lock on the pen core.

Further, the damping member and the ink tube of the cartridge form a sliding contact fit. The design makes the invention suitable for the pen core with conventional structure and facilitates the replacement of the pen core.

Drawings

FIG. 1 is a cross-sectional view of embodiment 1 of the present invention;

FIG. 2 is an exploded view of example 1 of the present invention;

Fig. 3 is a perspective sectional view of a barrel according to embodiment 1 of the present invention;

fig. 4 is a structural view of a cartridge supporting member according to embodiment 1 of the present invention;

fig. 5 is an axial view of a cartridge supporting member according to embodiment 1 of the present invention;

fig. 6 is an axial view of the inside of the barrel according to embodiment 1 of the present invention;

FIG. 7 is a structural view of a sleeve according to another embodiment of the invention similar to embodiment 1;

FIG. 8 is a cross-sectional view of embodiment 2 of the present invention;

FIG. 9 is an exploded view of embodiment 2 of the present invention;

Fig. 10 is a schematic diagram showing the connection of the collar and the cartridge according to embodiment 2 of the present invention;

FIG. 11 is a structural view of a collar according to embodiment 2 of the present invention;

FIG. 12 is a view showing the collar and the limiting portion of embodiment 2 of the present invention when they are engaged;

FIG. 13 is a view showing the collar and the limiting portion of embodiment 2 of the present invention when they are separated;

FIG. 14 is a cross-sectional view of embodiment 3 of the present invention;

FIG. 15 is an exploded view of example 3 of the present invention;

FIG. 16 is a structural view of a damping member according to embodiment 3 of the present invention;

FIG. 17 is a sectional view of a damping member according to embodiment 3 of the present invention;

fig. 18 is a partial cross-sectional view of embodiment 3 of the present invention.

Detailed Description

Embodiment 1 of the knock pen of the present utility model is shown in fig. 1-7: including pen-holder 1, setting up refill 2, refill supporting part 3, flexible locking mechanism 4, button 5, the spring 6 in pen-holder 1, refill supporting part 3 supports in the rear end of refill 3, refill supporting part 3, refill 2 all constitute along the axial clearance fit of pen with pen-holder 1, and the front end of refill supporting part 3, button 5's front end is connected the cooperation with the front and back end of flexible locking mechanism 4 respectively, and spring 6 sets up between refill 2 front end and pen-holder 1 for actuating lever refill 2 backward reset motion. The pen core supporting part 3 can be driven to move forwards through the cooperation of the button 5 and the telescopic locking mechanism 4, and then the pen core 2 is driven to move forwards, so that the pen core is discharged, or the pen core 2 is driven to move backwards through the spring 6, so that the pen core is contracted. The telescopic locking mechanism 4 is common in the existing pressing pen tools such as an automatic ball-point pen, and belongs to the mature prior art, and in this embodiment, the specific structure and working principle of the telescopic locking mechanism 4 are described in detail in a Chinese patent of utility model disclosed in the applicant's japanese application, namely, a mute pressing pen (CN 202222229308.6), and are not described in detail herein. In other embodiments, the telescopic locking mechanism 4 may also adopt the configuration as described in the background art.

In this embodiment, the refill support member 3 and the telescopic locking mechanism 4 are relatively independent members, and the refill support member 3 is abutted between the rear end of the refill 3 and the telescopic locking mechanism 4, and in other embodiments, the refill support member 3 may be an integral part of the telescopic locking mechanism 4.

The pen holder 2 is matched with a speed reducing mechanism, the speed reducing mechanism is used for at least reducing the movement speed of the pen core 2 towards the core shrinking direction, the speed reducing mechanism comprises a spiral sliding groove 71 and a sliding block 72, and the sliding block 72 and the sliding groove 71 form guiding sliding fit.

In this embodiment, the pen core supporting member 3 may rotate relative to the pen holder 1, the rear end of the pen core supporting member 3 and the telescopic locking mechanism 4 are in contact and fit, the sliding groove 71 and the sliding block 72 are respectively disposed on the pen core supporting member 3 and the pen holder 1, when the pen core supporting member 3 moves along the axial direction of the pen holder 1, the sliding block 72 disposed on the pen holder 1 will move along the sliding groove 71 disposed on the supporting member 3, so that the pen core supporting member 3 generates spiral movement, the matching manner can slow down the movement speed of the pen core supporting member 3 along the axial direction of the pen, and simultaneously, the movement speed of the pen core 2 along the axial direction of the pen can also be slowed down, so that the pen core 2 will not generate impact, the uneven distribution of ink in the pen core 2 will not occur, the possibility of ink leakage and ink breakage after the pen is used for a long time can be reduced, the service life of the pen is improved, and in addition, the noise generated when the pen core 2 is telescopic is operated can be reduced.

In other embodiments, the sliding groove 71 and the sliding block 72 may be respectively provided on the pen holder 1 and the pen core supporting part 3, so that the same effect can be achieved.

As shown in fig. 1 and 4, the front end of the refill support member 3 is provided with a sleeve 31, the sleeve 31 at the front end of the refill support member 3 is sleeved at the rear end of the ink tube of the refill 2, at least an axial limited connection and matching relationship exists between the refill support member 3 and the refill 2, and the refill support member 3 and the refill 2 may be fixedly connected together, and the chute 71 and the slide block 72 are respectively arranged on the outer peripheral wall of the sleeve 31 and the inner peripheral wall of the pen holder 1. In other embodiments, the sliding groove 71 and the sliding block 72 may be disposed on the inner peripheral wall of the barrel 1 and the outer peripheral wall of the sleeve 31, respectively.

The moving speed of the pen core is indirectly slowed down by slowing down the moving speed of the pen core supporting part 3, and the speed reducing mechanism is arranged between the sleeve 31 of the pen core supporting part 3 and the pen holder 1, so that on one hand, the internal space of the pen can be reasonably utilized, the structure of the pen is more compact, and on the other hand, the structure of the pen core is not influenced, so that the invention can be suitable for standard pen cores which can be purchased in the market. The sliding groove 71 is arranged on the outer peripheral wall of the sleeve 31, and the sliding block 72 is arranged on the inner peripheral wall of the pen holder 1, so that the processing difficulty of the pen can be reduced by design, and the injection molding processing and forming of the pen holder 1 are facilitated.

The sleeve 31 and the pen core supporting part 3 are integrally formed, so that the structure can be simplified, the number of parts is reduced, and the processing and the assembly are convenient.

As shown in fig. 4 and 5, the two sliding grooves 71 and the sliding blocks 72 are correspondingly arranged in two, the two sliding grooves 71 are distributed in a staggered manner along the axial direction, each sliding block 72 is correspondingly guided and matched with each sliding groove 71 in a sliding manner, the sliding grooves 71 are provided with inlets 710 for the sliding blocks 72 to be put in, the inlets 710 of each sliding groove 71 are arranged at the same position along the axial direction of the pen, namely, the inlets 71 of each sliding groove 71 are all arranged at the same axial position along the pen core supporting part 3 and are uniformly distributed along the axial direction of the pen, and each sliding block 72 is also arranged at the same axial position along the pen holder and is uniformly distributed along the axial direction of the pen.

By the design, the two parts matched through the sliding groove 71 and the sliding block 72 are stressed more uniformly, and are not easy to incline or deviate during relative movement, so that jamming is not easy to occur.

In another embodiment, as shown in fig. 7, the cartridge 2 is provided with a sleeve 8, the chute 71 is disposed on the outer peripheral wall of the sleeve 31, the cartridge 2 and the pen holder 1 can rotate relatively, and the moving speed of the sleeve 8 can be slowed down by matching the chute 71 with the slider 72, so as to indirectly slow down the moving speed of the cartridge 2. The difference from the above-described embodiment is that the sleeve 8 is a separate part from the cartridge supporting part 3, the sleeve 31 may be an integral part of the cartridge 2, for example the sleeve 31 is integrally formed on the cartridge 2, and the communication sleeve 31 is replaced together when the cartridge 2 is replaced. It is also possible to provide the sleeve 31 and the cartridge 2 with a detachable connection, for example a snap-fit or screw-fit. When the refill 2 needs to be replaced, the sleeve 8 and the refill 2 are detached, and the refill 2 is replaced independently.

In other embodiments, the sliding groove 71 and the sliding block 72 may be disposed on the inner peripheral wall of the barrel 1 and the sleeve 31, respectively.

Embodiment 2 of the knock pen of the present utility model is shown in fig. 8-13: the pen comprises a pen holder (11, 12), and a pen core 2 arranged in the pen holder, wherein a reset spring 5 is matched at the front end of the pen core 2, a telescopic locking mechanism 6 is matched at the rear end of the pen core 2, a button 7 is connected at the rear end of the telescopic locking mechanism 6, the pen core 2 can be driven to move forwards and keep the pen core in an extending state by alternately pressing the button 7 and connecting the telescopic locking mechanism 6 in parallel, or the pen core 2 is driven to move backwards and keep the pen core 2 in a retracting state by using the reset spring 5, the telescopic locking mechanism 6 is common in the existing pressing type pen such as an automatic ball-point pen, and belongs to the mature prior art, and in the embodiment, the specific structure and the working principle of the telescopic locking mechanism 6 are described in detail in a mute pressing pen (CN 202222229308.6) which is a Chinese patent filed by the applicant in the future, and are not repeated herein. In other embodiments, the telescopic locking mechanism 6 may also take the configuration as described in the background art. The pen refill 2 comprises an ink tube 21, an annular gap a is formed between the pen refill 2 and a pen holder, the pen refill 2 is matched with a speed reducing mechanism, the speed reducing mechanism is used for at least reducing the movement speed of the pen refill in the direction of retracting the pen refill, the speed reducing mechanism comprises a lantern ring 3 which is arranged in the gap a and can move forwards and backwards along the axial direction of the pen, an elastic component 4 which is in butt joint with the lantern ring 3 and provides elastic acting force for the lantern ring 3 to move backwards, the lantern ring 3 is sleeved outside the pen refill 2, the lantern ring 3 comprises a clamping part which is clamped with the pen refill 2 in a matched mode, the lantern ring 3 is clamped outside the ink tube 21 of the pen refill 2 through the clamping part, and a limiting part which can prop against the clamping part and enable the clamping part to further clamp the pen refill 2 is arranged inside the pen holder.

Specifically, as shown in fig. 11, the lantern ring 3 includes a tubular base 31, the clamping part is including a plurality of integrated into one piece clamping jaw 32 at base 31 rear end, clamping jaw 32 sets up along the axle center circumference equipartition of lantern ring 3, the setting of a plurality of clamping jaw 32 makes the atress more even between lantern ring 3 and the refill 2, clamping jaw 32 radially compresses tightly around refill 2, improves the cooperation effect between lantern ring 3 and the refill 2, has opening 30 between the adjacent clamping jaw 32 of circumference, can improve the elastic deformation effect of every clamping jaw 32, spacing portion is including setting up the annular flange 121 in pen-holder inner peripheral wall department, and a plurality of clamping jaw 32 and annular flange 121 can contact the cooperation simultaneously, improves the cooperation effect between a plurality of clamping jaw 32.

The aperture of the pen holder is divided by the annular flange 121, the rear aperture is narrower relative to the front, and the annular flange 121 is arranged at the joint of aperture change, so that when the clamping jaws 32 move backwards, the clamping jaws are pressed by the annular flange 121 to be converged and radially pressed on the pen core 2, and the resistance of the pen core 2 during the backward movement is improved.

The outside of clamping jaw 32 is provided with the step 321 that constitutes along axial spacing complex with annular flange 121 in corresponding root position, can play spacing effect, and the travel of forbidden lantern ring 3 backward motion prevents clamping jaw 32 excessively to enter into annular flange 121 rear, avoids appearing the dead problem of refill card.

In addition, in order to improve the matching effect of the clamping jaw 32 and the annular flange 121, the outer side of the clamping jaw 32 is provided with a conical matching surface 322, the conical matching surface 322 is used for being in contact fit with the annular flange 121, the clamping jaw 32 is in contact fit with the annular flange 121 through the conical matching surface 322 on the outer side of the clamping jaw 32, so that the force application matching effect with the annular flange 121 can be improved, and the clamping effect of the clamping jaw 32 on the pen refill 2 can be improved.

As shown in fig. 8, 12 and 13, the elastic member 4 includes a spring sleeved on the outer side of the ink tube 21 of the pen core 2, the rear end of the spring is in abutting fit with the front end of the base 31, the elastic force for the backward movement of the collar 3 is given, and the pen holder includes a supporting portion in abutting fit with the front end of the spring for limiting the front end of the spring.

As shown in fig. 8 and 9, the pen holder comprises a rod portion 12 and an end cover 11 screwed at the front end of the rod portion 12, the end cover 11 is provided with a core outlet, the end cover 11 comprises an insertion portion 111 screwed inside the rod portion 12, the support portion is formed by the rear end of the insertion portion 111, with this structure, the spring can be installed into the pen holder from the front end of the rod portion 12, and the insertion portion 111 is inserted inside the rod portion 12 to form a support fit with the front end of the spring while the end cover 11 is installed at the front end of the rod portion 12. Of course, in other solutions, the supporting portion may be directly integrally formed on the inner side of the barrel, for example, an annular flange integrally formed on the inner side of the barrel, and in such a solution, the spring needs to be installed into the barrel from the rear end of the stem portion 12.

The working principle of the embodiment is as follows: when the pen core 2 is driven to move forwards, the clamping acting force between the clamping part 32 of the lantern ring 3 and the pen core 2 can be utilized to drive the lantern ring 3 to move forwards, so that the clamping part 32 of the lantern ring 3 and the annular flange 121 are separated from a matched state, the elastic part 4 is pressed, deformed and stored, and when the elastic acting force given to the lantern ring 3 by the elastic part 4 is larger than the friction force between the clamping part 32 and the pen core 2, the clamping part 32 and the pen core 2 can slide relatively, so that the lantern ring 3 cannot move forwards along with the pen core 2; when the pen core 2 is driven to move backwards, the elastic acting force of the elastic component 4 and the clamping acting force between the clamping part 32 of the sleeve ring 3 and the pen core 2 are utilized to drive the sleeve ring 3 to move backwards, the clamping part 32 of the sleeve ring 3 is urged to prop against the annular flange 121, the clamping part 32 is further urged to be clamped on the pen core 2 through the matching of the clamping part 32 and the annular flange 121, the resistance when the pen core 2 retreats can be increased, the moving speed when the pen core 2 retreats is reduced, the pen core 2 can not collide and shake when in telescopic movement, the problem that the ink in the pen core 2 is unevenly distributed due to collision and shake can be prevented, the pen core 2 has a certain protection effect, the possibility of ink leakage and ink breakage after long-term use of the pen is reduced, and the noise when the pen core 2 stretches and contracts can also be reduced.

Embodiment 3 of the knock pen of the present utility model is shown in fig. 14-18: the pen comprises a pen holder 1, a pen core 2, a spring 3, a telescopic locking mechanism 4 and a button 5, wherein the pen core 2 is movably arranged in an inner hole of the pen holder 1 along the axial direction of the pen, the spring 3 is propped between the front end of the pen core 2 and the pen holder 1, the telescopic locking mechanism 4 is propped between the rear end of the pen core 2 and the button 5, the pen core 2 can be driven to move forwards and be kept in an extending state by alternately pressing the button 5 and connecting the telescopic locking mechanism 4 in parallel, or the pen core 2 is driven to move backwards and be kept in a retracting state by using the spring 3, the telescopic locking mechanism 4 is quite common in the existing pressing type pen tools such as an automatic ball-point pen, and the like, belongs to the mature prior art, and in the embodiment, the specific structure and the working principle of the telescopic locking mechanism 4 are described in detail in a Chinese patent-mute pressing pen (CN 202222229308.6) disclosed in the applicant of the prior application of the applicant. In other embodiments, the telescopic locking mechanism 4 can also adopt the structure as described in the background art, the pen core 2 is matched with a speed reducing mechanism, the speed reducing mechanism is used for at least reducing the movement speed of the pen core 2 in the direction of retracting the pen core, the speed reducing mechanism comprises a damping part 6 arranged on the pen holder 1, the damping part 6 and the pen holder 1 form positioning matching at least along the axial direction of the pen, the damping part 6 and the pen core 2 form sliding contact matching, and the damping part provides damping for the movement of the pen core 2 along the axial direction of the pen. The friction resistance between the damping part 6 and the pen core 2 is improved based on the roughness of the contact surface between the damping part 6 and the pen core 2 or the pressure during contact, so that the movement speed of the pen core 2 can be reduced when the pen core 2 is driven by the spring 3 to realize rebound movement (i.e. core shrinking action), the impact received by the pen core 2 when the pen core is suddenly stopped can be reduced, the service life of the pen core 2 is prolonged, the possibility of ink leakage and ink interruption of a pen after long-term use is reduced, and the noise generated during telescopic operation of the pen core can be reduced.

The damping part 6 and the pen holder 1 form a positioning fit at least along the axial direction of the pen, which means that the damping part 6 and the pen holder 1 can only be in a limiting fit relationship along the axial direction of the pen, for example, the damping part and the pen holder can also rotate along the axis of the pen; it may also mean that the fixation is complete, e.g. rotation is also inhibited; it may also mean that the damping member 6 and the barrel 1 are integrally formed. This causes the cartridge 2 not to move the damping member 6 in the axial direction when moving in the axial direction of the pen.

Of course, in other embodiments, the damping member 6 may also be disposed on the pen core 2, where the damping member 6 and the pen core 2 form a positioning fit at least along the axial direction of the pen, the damping member 6 and the pen holder 1 form a sliding contact fit, and the movement speed of the pen core 2 is slowed down by the friction force generated when the damping member 6 and the pen holder 1 contact and slide.

In this embodiment, as shown in fig. 16 to 18, the damping member 6 is an annular member, the axial position of the damping member 6 includes a connection hole 60, the pen core 2 is installed in the connection hole 60 of the damping member 6 in a penetrating manner, the pen core 2 and the inner peripheral wall of the connection hole 60 form a sliding contact fit, an annular groove is provided on the inner side of the pen holder 1, and the damping member 6 is embedded in the groove. The damping member 6 is positioned at least in the axial direction of the pen by means of the grooves.

The damping part 6 with the annular structure can improve the contact matching effect with the pen core 2, so that the stress is more uniform, and the generation of clamping is avoided.

In the other embodiments described above, the groove is provided on the outer side of the pen core 2, and the connection hole 60 of the damping member 6 is sleeved on the pen core 2 and is embedded in the groove. The outer peripheral wall of the annular damping part 6 and the inner peripheral wall of the pen holder 1 form sliding contact fit.

In this embodiment, as shown in fig. 14 and 18, the pen holder 1 includes a first portion 11 and a second portion 12 connected to each other, where an annular flange 111 is circumferentially disposed in an inner hole of the first portion 11, the second portion 12 includes an annular insertion portion 121 that is mated with and plugged into the inner hole of the first portion 11, the groove is formed by the annular flange 111, an inner peripheral wall of the first portion 11, and the insertion portion 121 of the second portion, the groove has two axial first side walls 71 (respectively provided by the insertion portion 121 and the annular flange 111), one circumferential second side wall 72 (respectively provided by the inner peripheral wall of the first portion 11), an outer peripheral wall of the damping member 6 and an inner peripheral wall of the first portion 11 are in abutting and limiting fit, radial movement of the damping member 6 is avoided, an axial end of the damping member 6 and a front end of the insertion portion 121 of the second portion 12 are in abutting and limiting fit, axial movement of the damping member 6 is avoided, and the inner peripheral wall of the connecting hole 60 and the pen core 2 form a sliding contact fit for providing damping for movement of the pen core.

Compared with the other embodiments, the structure of the groove is set on the pen holder 1, the damping part 6 is positioned on the pen holder 1, the groove is formed by connecting two parts, the processing and manufacturing of the groove are facilitated, the installation of the damping part 6 is also facilitated, the damping part 6 can be firstly placed into the inner hole of the pen holder along the opening of the rear end of the first part 11 of the pen holder during the installation, and then the insertion part 121 of the second part 12 is inserted along the opening of the rear end of the first part 11 until the damping part 6 is pushed in place. The structure of the pen refill 2 can be simplified through the design, and implementation of the scheme is facilitated.

As shown in fig. 18, the annular flange 111 includes a conical surface (i.e., a first side wall 71 relatively forward of the groove) in abutting and limit fit with one axial end of the damping member 6, an annular groove 73 is formed between the outer side of the conical surface and the inner peripheral wall (i.e., a second side wall 72 of the groove) of the first portion 11, the damping member 6 is partially embedded into the groove 73, the groove 73 is configured to improve the positioning and mounting effect on the damping member 6, prevent the damping member 6 from being deformed out of the groove due to the influence of the pen core 2, and improve the reliability during operation.

As shown in fig. 16 and 17, a plurality of annular ribs 61 are arranged on the outer circumferential wall of the damping component 6 at intervals along the axial direction, so that the contact area between the damping component 6 and the pen holder 1 can be reduced, the deformation of the damping component 6 can be reduced in the process of inserting and installing the damping component 6 into the pen holder 1, and the installation of the damping component 6 is facilitated. In addition, when the pen holder 1 is made of transparent materials, marks generated by the pressing of the damping part 6 and the pen holder 1 can be obviously seen from the outside of the pen holder 1, a plurality of annular convex ribs 61 are adopted to be in matched contact with the pen holder 1, and a plurality of annular marks can be seen from the outside of the pen holder 1, so that the attractiveness is improved.

The inner peripheral wall of the connecting hole 60 is arc-shaped along the axial cross section, the aperture of the connecting hole 60 gradually decreases from the axial middle position to the two ends, referring to fig. 18, the requirement on the processing precision of the damping part 6 can be reduced by the arc-shaped profile design, the middle position of the damping part 6 is contacted with the pen core 2, the matching effect of the damping part 6 and the pen core 2 is improved, and the damping part 6 is not easy to lock on the pen core 2.

The damping member 6 may be made of silicone, rubber or a plastic having a relatively soft texture.

Preferably, the axial movement of the pen core 2 does not cause the damping member 6 to deform to a large extent. In the present embodiment, the friction force with the cartridge 2 is improved mainly by virtue of a certain degree of pressing force between the damping member 6 and the cartridge 2, and in other embodiments, the friction force with the cartridge 2 can also be improved by providing a grain at the inner peripheral wall of the damping member 6. In order to ensure that cartridge 2 does not rebound, the static friction between damping member 6 and cartridge 2 should be less than the elastic force of spring 3 acting on cartridge 2 and urging it back.

In this embodiment, the damping member 6 and the ink tube 21 of the cartridge constitute a sliding contact fit. The design makes the invention suitable for the pen core with conventional structure, and reduces the production and replacement cost of the pen core.

The above embodiment is only one of the preferred embodiments of the present invention, and common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are included in the scope of the present invention.

Claims

1. The utility model provides a press formula pen utensil, including the pen-holder, set up refill, spring, the flexible locking mechanism in the pen-holder, the rear end of pen-holder is provided with the button, and the spring supports to establish between refill and pen-holder, and flexible locking mechanism linkage sets up between refill and button, its characterized in that: the refill is matched with a speed reducing mechanism, and the speed reducing mechanism is used for at least reducing the movement speed of the refill in the refill shrinking direction.

2. The knock-type pen tool according to claim 1, wherein: the speed reducing mechanism comprises a spiral chute and a slide block, the slide block and the chute form guide sliding fit, the rear end of the pen core is in abutting limit fit with a pen core supporting part, the chute and the slide block are respectively arranged on the pen core supporting part/pen holder and the pen holder/pen core supporting part, and the pen core supporting part and the pen holder can rotate relatively; or the sliding groove and the sliding block are respectively arranged on the pen core/the pen holder and the pen holder/the pen core, and the pen core and the pen holder can rotate relatively.

3. The knock-type pen tool according to claim 2, wherein: the front end of the pen core supporting part is integrally provided with a sleeve, the sleeve at the front end of the pen core supporting part is sleeved with the sleeve and is arranged at the rear end of the pen core, and the sliding groove and the sliding block are respectively arranged on the outer peripheral wall of the sleeve/the inner peripheral wall of the pen holder and the inner peripheral wall of the pen holder/the outer peripheral wall of the sleeve.

4. The knock-type pen tool according to claim 2, wherein: the pen refill is sleeved with a sleeve, and the sliding groove and the sliding block are respectively arranged on the outer peripheral wall of the sleeve/the inner peripheral wall of the pen holder and the inner peripheral wall of the pen holder/the outer peripheral wall of the sleeve.

5. The knock-type pen tool according to claim 2, wherein: the sliding grooves and the sliding blocks are correspondingly arranged at least two, the at least two sliding grooves are distributed in a staggered mode along the axial direction, the sliding blocks are correspondingly guided and matched with the sliding grooves in a sliding mode, the sliding grooves are provided with inlets for the sliding blocks to be placed in, the inlets of the sliding grooves are arranged at the same position along the axial direction of the pen and are uniformly distributed along the axial direction of the pen in the circumferential direction, and the sliding blocks are also arranged at the same position along the axial direction of the pen and are uniformly distributed along the axial direction of the pen in the circumferential direction.

6. The knock-type pen tool according to claim 1, wherein: the pen comprises a pen core, a pen holder, a speed reducing mechanism, a pen core, a pen rod, a pen-holding mechanism and a speed reducing mechanism, wherein an annular gap is formed between the pen core and the pen holder, the speed reducing mechanism comprises a lantern ring which is arranged in the gap and can move back and forth along the axial direction of the pen, an elastic component which is in butt joint with the lantern ring and provides elastic acting force for the lantern ring to move backwards, the lantern ring is sleeved outside the pen core, the lantern ring comprises a holding part which is clamped with the pen core in a matched mode, and a limiting part which can abut against the holding part and enable the holding part to further clamp the pen core is arranged on the inner side of the pen holder.

7. The knock-type pen tool according to claim 6, wherein: the lantern ring is including the base of tube-shape, clamping part is including a plurality of integrated into one piece clamping jaw at the base rear end, the clamping jaw sets up along the axle center circumference equipartition of lantern ring, has the opening between the circumferentially adjacent clamping jaw, limit part is including setting up the annular flange in pen-holder inner peripheral wall department.

8. The knock-type pen tool according to claim 1, wherein: the speed reducing mechanism comprises a damping part arranged on one part of the pen holder and the pen core, the damping part and the one part form positioning fit at least along the axial direction of the pen, and the damping part and the other part form sliding contact fit to provide damping for the movement of the pen core along the axial direction of the pen.

9. The snap-on pen tool damping mechanism according to claim 8, wherein: the damping part is an annular part, the axis position of the damping part comprises a connecting hole, the pen core is arranged in the connecting hole of the damping part in a penetrating mode, an annular groove is formed between the pen holder and the pen core, and the damping part is embedded in the groove.

10. The snap-on pen tool damping mechanism according to claim 9, wherein: the pen holder comprises a first part and a second part which are connected, wherein an annular flange is circumferentially arranged in an inner hole of the first part, the second part comprises an annular insertion part which is matched and spliced with the inner hole of the first part, the groove is formed by the annular flange, the inner peripheral wall of the first part and the insertion part of the second part, the outer peripheral wall of the damping part is in butt limit fit with the inner peripheral wall of the first part, one axial end of the damping part is in butt limit fit with the annular flange, the other axial end of the damping part is in butt limit fit with the insertion part of the second part, and the inner peripheral wall of the connecting hole and the pen core form sliding contact fit.