WO2023000576A1 - 自动铅笔 - Google Patents

自动铅笔 Download PDF

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Publication number
WO2023000576A1
WO2023000576A1 PCT/CN2021/134378 CN2021134378W WO2023000576A1 WO 2023000576 A1 WO2023000576 A1 WO 2023000576A1 CN 2021134378 W CN2021134378 W CN 2021134378W WO 2023000576 A1 WO2023000576 A1 WO 2023000576A1
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WO
WIPO (PCT)
Prior art keywords
abutting
pen
jaw
abutment
mechanical pencil
Prior art date
Application number
PCT/CN2021/134378
Other languages
English (en)
French (fr)
Inventor
韩爱国
郭礼庚
Original Assignee
温州天骄笔业有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 温州天骄笔业有限责任公司 filed Critical 温州天骄笔业有限责任公司
Priority to US18/013,257 priority Critical patent/US20240100877A1/en
Priority to JP2022600065U priority patent/JP3243170U/ja
Publication of WO2023000576A1 publication Critical patent/WO2023000576A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K21/00—Propelling pencils
    • B43K21/02—Writing-core feeding mechanisms
    • B43K21/22—Writing-cores gripping means, e.g. chucks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K21/00—Propelling pencils
    • B43K21/02—Writing-core feeding mechanisms
    • B43K21/16—Writing-core feeding mechanisms with stepwise feed of writing-cores

Definitions

  • the invention relates to a mechanical pencil.
  • Existing mechanical pencils usually include a penholder, an end cap positioned at the front end of the penholder, and a tailcap positioned at the rear end of the penholder.
  • a core-out mechanism is provided inside the penholder.
  • the core-out mechanism includes grippers that cooperate with the lead core, A collar that fits freely into the jaws. Press the tail cap with your hands to drive the jaws and the collar to move forward, and the jaws hold the lead core forward at the same time. When the collar moves forward for a certain distance, it is restricted and stopped, so that the collar moves backward relative to the jaws.
  • the jaws rely on their own elastic reset to release the clamping state of the lead core; when the hand is detached from the tail cover, the jaws and the collar move backward under the action of the spring to re-form the clamping of the lead core Hold it in place for easy writing.
  • the lead core can be driven to protrude from the front end of the pen holder by pressing the tail cap, so as to realize the function of automatic core ejection.
  • the defects of existing mechanical pencils are: for some lead cores made of special materials, such as colored lead, the lead material not only has relatively greater viscosity, but also has a relatively thick diameter, which is different from the jaws of mechanical pencils. There is a larger contact area between the jaws and the lead core, especially after long-term contact and clamping between the jaws and the lead core, the lead core and the jaws are easily bonded together, resulting in the failure of the lead core to be driven out normally, so that the automatic The core out function fails.
  • the present invention provides a mechanical pencil with better core-out effect.
  • the present invention provides a mechanical pencil, which includes a jaw for cooperating with the core, the front of the jaw is provided with an abutment member, and the rear end of the abutment member corresponding to the jaw An abutting portion is provided, the abutting portion includes a first through hole through which the lead core is movably penetrated, and the abutting portion can be inserted into the inner side of the jaw based on the forward movement of the jaw.
  • the abutment part may be made of metal material and has a cylindrical structure.
  • the abutment member includes a base part that is mated and connected with the pen holder or end cap of the pen, and the abutment part is mated and connected with the rear end of the base part.
  • the base is made of plastic material.
  • the base part includes a second through hole coaxially connected with the first through hole, and an annular installation groove is provided on the inner side of the rear end of the second through hole for the front end of the abutting part to be inserted and positioned.
  • the rear end of the second through hole has a first guiding tapered surface.
  • the abutting member may also include a base that is mated with the pen barrel or end cap of the pen, the abutting portion is integrally connected to the rear end of the base, and the outside of the abutting portion has a second guiding tapered surface.
  • the abutment member may be an independent part, which is fixed on the end cap or the barrel of the pen through installation.
  • the abutment member can also be a non-independent part, including an end cap located at the front end of the pen, the rear end of the end cap has a concave hole, the abutment member is arranged at the axis of the concave hole, and the abutment member It is a cylindrical structure, the front end of the abutting member is integrally connected with the end cover, there is a gap between the abutting member and the side wall of the concave hole, and a number of slots are opened at the rear end of the abutting member along its axis and circumferential direction.
  • the abutting member may also be able to move along the front and rear directions of the pen, and a spring is abutted against the front end of the abutting member.
  • a limiting component capable of limiting the backward movement of the abutting component is included, and the limiting component is arranged on the pen barrel or the end cap of the pen.
  • the inside of the front end of the jaw is provided with a chamfer.
  • the beneficial effect of the present invention is that when the tail cap at the rear end of the pen is pressed, the jaws can be driven to move forward, and when the jaws move forward, the abutting part of the abutting member can be inserted The adhesive part between it and the lead core is separated, so that it can be normally opened to the outside, thereby enabling the clamping jaws to release the clamping of the lead core.
  • the present invention will not be interfered by the bonding between the lead core and the jaws, and can improve the core-out effect of the mechanical pencil.
  • Fig. 1 is a partial structural diagram of Embodiment 1 of the present invention.
  • Fig. 2 is a structural diagram of the abutting member of Embodiment 1 of the present invention.
  • Fig. 3 is a partial structural diagram of Embodiment 2 of the present invention.
  • Fig. 4 is a structural diagram of an abutment member according to Embodiment 2 of the present invention.
  • Fig. 5 is a partial structural diagram of Embodiment 3 of the present invention.
  • Fig. 6 is the structural diagram of the end cap of embodiment 3 of the present invention.
  • Fig. 7 is a partial structural diagram of Embodiment 4 of the present invention.
  • Fig. 8 is a structural diagram of an abutting member according to Embodiment 4 of the present invention.
  • Embodiment 1 of the mechanical pencil of the present invention includes a pen holder 11, an end cap 12 positioned at the front end of the pen holder 11, a core-out mechanism is arranged between the pen holder 11 and the end cover 12, and the core-out mechanism includes There are a core tube 21, a jaw 22 cooperating with the lead core O, and a collar 23 that is movably socketed with the jaw 22.
  • the jaw 22 is telescopically arranged on the front end of the core tube 21.
  • the rear end includes an insertion part 122 inserted and positioned inside the pen holder 11, and the rear end of the end cover 12 also has a concave hole 123, the insertion part 122 cooperates with the collar 23 to limit the position, and the jaw 22
  • the relative movement with the collar 23 realizes the opening of the jaws 22 when moving forward and releases the clamping of the lead core 0, and can re-clamp the lead core 0 and fix the lead core 0 when moving backward.
  • the front of the jaw 22 is provided with an abutment member 3, the abutment member 3 is set at the position between the front end of the penholder 11 and the end cap 12, and is located inside the pen, and the abutment member 3 is opposite to the jaw 22.
  • the corresponding rear end is provided with an abutting portion 31, and the abutting portion 31 includes a first through hole 311 through which the lead core 0 is movably penetrated, and the abutting portion 31 can be inserted into the
  • the inner side of the jaw 22 enables the joint between the jaw 22 and the lead core 0 to be separated, so that the jaw 22 can be normally opened under the action of its own elasticity.
  • the abutting part 31 is made of metal material and has a cylindrical structure with uniform and thinner surrounding side walls 312, which can be inserted between the lead core 0 and the inner side of the jaw 22 when the jaw 22 moves forward. , to drive the joint between the jaw 22 and the lead core O to separate, so that the jaw 22 can be opened normally under its own elasticity, and the abutment part 31 is made of metal material so that it can provide a higher
  • the strength can be made thinner, which is more conducive to inserting into the inside of the jaw 22, and is not easy to be deformed and damaged.
  • the abutment member 3 includes a base 32 that is mated with the end cover 12, and the base 32 is connected from the end
  • the rear end of the cover 12 is plugged and fixed on the inside of the concave hole 123, and the side wall of the concave hole 123 is provided with a position-limiting protrusion 121 that can prevent it from coming out after the base 32 is inserted, and can improve the gap between the end cover 12 and the end cover 12.
  • the base 32 can also cooperate with the pen holder 11 for fixed connection.
  • the abutment part 31 is connected and fixed with the rear end of the base part 32.
  • the base part 32 is made of plastic material, and the abutment member 3 is connected by two parts made of different materials (that is, the abutment part 31 and the base part 32).
  • the configuration can save the overall cost on the premise of providing higher local (namely contact portion 31 ) strength.
  • the base 32 includes a second through hole 321 coaxially connected with the first through hole 311.
  • the second through hole 321 is also used for the lead O to pass through.
  • the rear end of the second through hole 321 is opened There is an annular mounting groove 3211 for inserting and positioning the front end of the abutting portion 31, and the rear end of the second through hole 321 has a first guide tapered surface 3212, which is convenient for guiding and inserting the front end of the abutting portion 31 into the annular mounting groove 3211 Among them, the front end of the abutting portion 31 and the annular installation groove 3211 are plugged and fixed in an interference manner, which is convenient for installation.
  • the inner side of the front end of the jaw 22 is provided with a chamfer, and the setting of the chamfer 221 can guide the abutting portion 31 to be inserted into the inner side of the jaw 22 to avoid jamming.
  • Embodiment 2 of the mechanical pencil of the present invention is shown in Figures 3-4: it includes a penholder 11 and an end cap 12 located at the front end of the penholder 11, and a core-out mechanism is arranged between the penholder 11 and the end cover 12, and the core-out mechanism includes There are a core tube 21, a jaw 22 cooperating with the lead core O, and a collar 23 that is movably socketed with the jaw 22.
  • the jaw 22 is telescopically arranged on the front end of the core tube 21.
  • the rear end includes an insertion part 122 inserted and positioned inside the pen holder 11, and the rear end of the end cover 12 also has a concave hole 123, the insertion part 122 cooperates with the collar 23 to limit the position, and the jaw 22
  • the relative movement with the collar 23 realizes the opening of the jaws 22 when moving forward and releases the clamping of the lead core 0, and can re-clamp the lead core 0 and fix the lead core 0 when moving backward.
  • the front of the jaw 22 is provided with an abutment member 3, the abutment member 3 is set at the position between the front end of the penholder 11 and the end cap 12, and is located inside the pen, and the abutment member 3 is opposite to the jaw 22.
  • the corresponding rear end is provided with an abutting portion 31, and the abutting portion 31 includes a first through hole 311 through which the lead core 0 is movably penetrated, and the abutting portion 31 can be inserted into the
  • the inner side of the jaw 22 enables the joint between the jaw 22 and the lead core 0 to be separated, so that the jaw 22 can be normally opened under the action of its own elasticity.
  • the abutment member 3 includes a base 32 that is mated with the end cap 12 of the pen.
  • the abutment 31 and the base 32 are integrally formed.
  • the abutment 31 is located at the rear end of the base 32.
  • the abutment 31 There is a second guide cone surface 313 on the outer side of the guide cone surface 313.
  • the outer diameter of the second guide cone surface 313 is gradually increased from the back to the front.
  • the side wall of the base 32 is provided with a limit protrusion 121 that can prevent it from coming out after the base 32 is inserted, which can improve the reliability of the connection and fixation between the end cover 12 and the end cover 12.
  • the base 32 can also be connected with the end cover 12.
  • the pen holder 11 cooperates to be fixedly connected.
  • Embodiment 2 since the abutting portion 31 and the base portion 32 are integrally formed, production and processing can be facilitated and assembly procedures between the abutting portion 31 and the base portion 32 can be reduced, and the abutting portion 31 is provided in a tapered structure, It can improve the strength of the abutting part 31 when it interferes with the clamping jaw 22, and is not easily deformed or damaged, and the abutting part 31 can be guided and inserted between the inside of the clamping jaw 22 and the lead core O.
  • the two guide tapered surfaces 313 can also give the clamping jaws 22 a component force in the direction of opening while being in conflict with the inside of the clamping jaws 22 , which can further improve the opening effect of the clamping jaws 22 .
  • the inner side of the front end of the jaw 22 is provided with a chamfer, and the setting of the chamfer 221 can play a role in guiding the abutting portion 31 to be inserted into the inner side of the jaw 22 and promoting the opening of the jaw 22 to avoid jamming. Situation, further improve the use effect.
  • Embodiment 3 of the mechanical pencil of the present invention is shown in Figures 5-6: it includes a pen holder 11 and an end cap 12 located at the front end of the pen holder 11, and a core-out mechanism is provided between the pen holder 11 and the end cover 12, and the core-out mechanism includes There are a core tube 21, a jaw 22 cooperating with the lead core O, and a collar 23 that is movably socketed with the jaw 22.
  • the jaw 22 is telescopically arranged on the front end of the core tube 21.
  • the rear end includes an insertion part 122 inserted and positioned inside the pen holder 11, the insertion part 122 cooperates with the collar 23 to limit the position, and the relative movement between the jaws 22 and the collar 23 is used to realize the forward movement of the jaws 22 When opening and releasing the clamping of the lead core, when moving backward, it can be clamped on the lead core again and the lead core can be fixed.
  • the front of the jaw 22 is provided with an abutment member 3, the abutment member 3 is set at the position between the front end of the penholder 11 and the end cap 12, and is located inside the pen, and the abutment member 3 is opposite to the jaw 22.
  • the corresponding rear end is provided with an abutting portion 31, and the abutting portion 31 includes a first through hole 311 through which the lead core 0 is movably penetrated, and the abutting portion 31 can be inserted into the
  • the inner side of the jaw 22 enables the joint between the jaw 22 and the lead core 0 to be separated, so that the jaw 22 can be normally opened under the action of its own elasticity.
  • the rear end of the end cover 12 has a concave hole 123
  • the abutment member 3 is arranged at the axial center of the concave hole 123
  • the abutment member 3 has a cylindrical structure
  • the front end of the abutment member 3 is integrally connected with the end cover 12
  • the outer side of the abutment portion 31 has a second guide tapered surface 313, and the outer diameter of the second guide tapered surface 313 is gradually increased from the rear to the front.
  • the rear end of the abutting member 3 defines a plurality of slots 33 along the circumferential direction of its axis.
  • the abutment member 3 is directly integrally formed on the end cover 12, which is convenient for production and processing, and can reduce costs.
  • the abutment portion 31 is provided in a tapered structure, which can improve the strength of the abutment portion 31 when it interferes with the jaws 22. It is not easy to be deformed and damaged, and the abutting portion 31 can be guided and inserted between the inner side of the jaw 22 and the lead core O.
  • the second guiding tapered surface 313 can be used to interfere with the inner side of the jaw 22 and can also Giving the clamping jaws 22 a component force in the opening direction can further improve the opening effect of the clamping jaws 22 .
  • the setting of the slot 33 enables the abutting member 3 to give a certain elastic clamping effect to the lead wire pierced in the first through hole 311, and improve the damping of the movement of the lead wire, thereby reducing the shaking of the lead wire during writing.
  • the gap 124 can give the abutment member 3 a space to deform in the outward direction, and improve its elastic deformation effect.
  • a protrusion 3111 is provided inside the first through hole 311 .
  • the inner side of the front end of the jaw 22 is provided with a chamfer 221, the setting of the chamfer 221 can play a role in guiding the abutment portion 31 to be inserted into the inner side of the jaw 22 and promoting the opening of the jaw 22, so as to avoid jamming situation, to further improve the use effect.
  • Embodiment 4 of the mechanical pencil of the present invention is shown in Figures 7-8: it includes a pen holder 11 and an end cap 12 located at the front end of the pen holder 11, and a core-out mechanism is arranged between the pen holder 11 and the end cover 12, and the core-out mechanism includes There are a core tube 21, a jaw 22 cooperating with the lead core O, and a collar 23 that is movably socketed with the jaw 22.
  • the jaw 22 is telescopically arranged on the front end of the core tube 21.
  • the rear end includes an insertion part 122 inserted and positioned inside the pen holder 11, the insertion part 122 cooperates with the collar 23 to limit the position, and the relative movement between the jaws 22 and the collar 23 is used to realize the forward movement of the jaws 22 When opening and releasing the clamping of the lead core, when moving backward, it can be clamped on the lead core again and the lead core can be fixed.
  • the front of the jaw 22 is provided with an abutment member 3, and the rear end of the abutment member 3 corresponding to the jaw 22 is provided with an abutment portion 31, and the abutment portion 31 includes a Through the first through hole 311, the abutting portion 31 can be inserted into the inner side of the jaw 22 based on the forward movement of the jaw 22, so that the joint between the jaw 22 and the lead core O can be separated, and the jaw 22 can be normally opened under the action of its own elasticity.
  • the outer side of the abutment portion 31 has a second guide tapered surface 313, the outer diameter of the second guide tapered surface 313 is gradually increased from the rear to the front, and the abutment portion 31 is set in a tapered structure, which can improve the abutment portion 31.
  • the strength when it interferes with the jaws 22 is not easily deformed and damaged, and the abutting portion 31 can be guided and inserted between the inner side of the jaws 22 and the lead core O. While the inner side of the jaws 22 is in conflict fit, it can also give the jaws 22 a component force in the direction of opening, which can further improve the opening effect of the jaws 22 .
  • the inner side of the front end of the jaw 22 is provided with a chamfer 221, the setting of the chamfer 221 can play a role in guiding the abutment portion 31 to be inserted into the inner side of the jaw 22 and promoting the opening of the jaw 22, so as to avoid jamming situation, to further improve the use effect.
  • the abutting member 3 is set at a position between the front end of the penholder 11 and the end cap 12, is located inside the pen, and can move along the front and rear directions of the pen.
  • the front end of the abutting part 3 is abutted with a spring 4, and the abutting part 3
  • the front end of the spring 4 has a socket positioning part 34 for the socket positioning of the spring 4, and the middle part of the abutment part 3 has an annular flange 35, and the rear end of the spring 4 is sleeved on the socket positioning part 34 and simultaneously abuts against on the annular flange 35 .
  • the rear end of the end cover 12 has a recessed hole 123, and the axial center of the recessed hole 123 is provided with a cylindrical part 125 cooperating with the lead core O, and there is an annular gap between the cylindrical part 125 and the side wall of the recessed hole 123 124, the front end of the spring 4 is inserted in the gap 124, the abutment member 3 is movably arranged in the concave hole 123 along the axial direction of the pen, the annular flange 35 of the abutting component 3 is in contact with the concave hole 123 inner walls form a sliding fit.
  • the side wall of the concave hole 123 is provided with a limiting component 126 capable of cooperating with the annular flange 35 to limit the backward movement of the abutting component 3 .
  • the elastic supporting force is provided for the abutting part 3 by the spring 4, and the force given to the abutting part 3 by the spring 4 gradually increases when squeezed and contracted, so that the cooperation between the abutting part 3 and the jaw 22 is more stable, Avoid the abrupt feeling when pressing the tail cap at the rear end of the pen, make the core out process smoother, the hand press force more smoothly, and improve the operating comfort.
  • both the abutting member 3 and the spring 4 can also be arranged inside the pen holder 11 , and the same effect can also be achieved.

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  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Abstract

公开了一种自动铅笔，包括有用于配合出芯的夹爪（22），夹爪（22）的前方设置有抵接构件（3），抵接构件（3）的与夹爪（22）相对应的后端设置有抵接部（31），抵接部（31）包括有供铅芯活动穿设的第一通孔（311），抵接部（31）能够基于夹爪（22）的向前运动插入到夹爪（22）内侧并同时驱动其向外侧张开。本自动铅笔出芯效果更好。

Description

自动铅笔 技术领域
本发明涉及一种自动铅笔。
背景技术
现有的自动铅笔通常都包括有笔杆、位于笔杆前端的端盖、位于笔杆后端的尾盖，笔杆内部设置有出芯机构，所述出芯机构包括有与铅芯配合夹持的夹爪、与夹爪配合活动套接的套环。通过手部按压尾盖，能够驱动夹爪、套环向前运动，夹爪同时夹持铅芯向前输送，当套环向前运动一定距离时被限制停止，使套环相对夹爪向后运动，夹爪依靠自身弹性复位张开，以解除对铅芯的夹持状态；当手部从尾盖上脱离时，夹爪和套环在弹簧作用下后退运动，重新形成对铅芯的夹持固定，以方便进行书写。通过上述原理能够通过按压尾盖驱使铅芯从笔杆前端伸出，实现自动出芯的功能。
目前，现有的自动铅笔存在的缺陷是：对于一些特殊材质的铅芯，例如彩铅而言，其铅芯材质不仅具有相对更大的粘性，而且直径通常较粗，与自动铅笔的夹爪之间具有更大的接触面积，特别是夹爪和铅芯之间长时间接触夹紧后，铅芯和夹爪之间容易黏接在一起，导致铅芯无法被正常驱动伸出，使自动出芯功能失效。
发明内容
针对上述现有技术的不足，本发明提供了一种出芯效果更好的自动铅笔。
为实现上述目的，本发明提供了一种自动铅笔，包括有用于配合出芯的夹爪，所述夹爪的前方设置有抵接构件，所述抵接构件的与夹爪相对应的后端设置有抵接部，所述抵接部包括有供铅芯活动穿设的第一通孔，所述抵接部能够基于夹爪的向前运动插入到夹爪内侧。
所述抵接部可以是由金属材质制成且呈筒状结构，所述抵接构件包括有与笔的笔杆或端盖配合连接的基部，所述抵接部与基部后端配合连接固定，所述基部由塑料材质制成。
进一步地，所述基部包括有与第一通孔配合同轴连接的第二通孔，所述第二通孔的后端内侧开设有供抵接部的前端插装定位的环形安装槽。
进一步地，所述第二通孔的后端具有第一导向锥面。
所述抵接构件还可以是包括有与笔的笔杆或端盖配合连接的基部，所述抵接部一体连接在基部的后端，所述抵接部的外侧具有第二导向锥面。
所述抵接构件可以是独立的部件，其通过安装固定在笔的端盖或笔杆上。
所述抵接构件还可以是非独立的部件，包括有位于笔的前端的端盖，所述端盖的后端具有凹孔，所述抵接构件设置在凹孔的轴心位置，抵接构件呈筒状结构，抵接构件的前端与端盖一体连接，抵接构件和凹孔侧壁之间留有间隙，所述抵接构件的后端沿其轴心周向开设有若干槽缝。
所述抵接构件还可以是能够沿笔的前后方向运动，抵接部件的前端抵设有弹簧。
进一步地，包括有能够对抵接部件的向后运动进行限制的限位部件，所述限位部件设置在笔的笔杆或端盖上。
进一步地，所述夹爪前端的内侧设置有倒角。
本发明的有益效果是：在按压笔后端的尾盖时，能够驱动夹爪向前运动，夹爪在向前运动时，所述抵接构件的抵接部能够插入到夹爪内侧，并驱使其和铅芯之间黏接处分离，从而使其能够正常向外侧张开，从而能够促使夹爪解除对铅芯的夹持。本发明相较于现有技术中的夹爪依靠自身弹性张开的方式而言，不会受到铅芯和夹爪之间黏接的干扰，能够提高自动铅笔的出芯效果。
附图说明
图1为本发明实施例1的局部的结构图；
图2为本发明实施例1的抵接构件的结构图；
图3为本发明实施例2的局部的结构图；
图4为本发明实施例2的抵接构件的结构图；
图5为本发明实施例3的局部的结构图；
图6为本发明实施例3的端盖的结构图；
图7为本发明实施例4的局部的结构图；
图8为本发明实施例4的抵接构件的结构图。
具体实施方式
本发明自动铅笔的实施例1如图1-2所示，包括有笔杆11、位于笔杆11前端的端盖12，笔杆11和端盖12之间设置有出芯机构，所述出芯机构包括有出芯管21、与铅芯0配合夹持的夹爪22、与夹爪22配合活动套接的套环23，所述夹爪22伸缩设置在出芯管21的前端，端盖12的后端包括有插装定位在笔杆11内侧的插入部122，所述端盖12的后端还具有凹孔123，所述插入部122与所述套环23配合进行限位，利用夹爪22和套环23的相对运动实现夹爪22向前运动时的张开并解除对铅芯0的夹持、向后运动时能够重新夹持在铅芯0上并对铅芯0进行固定。
所述夹爪22的前方设置有抵接构件3，抵接构件3设置笔杆11的前端和端盖12之间的位置，并位于笔的内侧，所述抵接构件3的与夹爪22相对应的后端设置有抵接部31，所述抵接部31包括有供铅芯0活动穿设的第一通孔311，所述抵接部31能够基于夹爪22的向前运动插入到夹爪22内侧，使夹爪22和铅芯0之间黏接处能够分离，促使夹爪22能够在自身弹性作用下正常张开。
所述抵接部31由金属材质制成且呈筒状结构，具有均匀且较薄的四周侧壁312，其能够在夹爪22向前运动时插入到铅芯0和夹爪22内侧之间，驱使夹爪22和铅芯0之间黏接处分离，使夹爪22能够在自身弹性作用下正常张开，抵接部31采用金属材质使其在与夹爪22配合时能够提供较高的强度，能够做的更薄，更利于插入到夹爪22内侧，且不容易产生变形以及损坏，所述抵接构件3包括有与端盖12配合连接的基部32，所述基部32从端盖12的后端插装固定在凹孔123的内侧，凹孔123的侧壁设置有能够在基部32插入后防止其脱出的限位凸起121，能够提高端盖12和端盖12之间连接固定的可靠性，在其他实施例中所述基部32也可以和笔杆11配合进行固定连接。
所述抵接部31与基部32后端配合连接固定，所述基部32由塑料材质制成，抵接构件3分别由两个不同材质制成的部件(即抵接部31与基部32)连接构成，能够在提供较高的局部(即抵接部31)强度的前提下节省整体的成本。所述基部32包括有与第一通孔311配合同轴连接的第二通孔321，第二通孔321同样也供铅芯0进行穿设，所述第二通孔321的后端内侧开设有供抵接部31的前端插装定位的环形安装槽3211，所述第二通孔321的后端具有第一导向锥面3212，方便将抵接部31的前端导向插入到环形安装槽3211中，抵接部31的前端和环形安装槽3211之间采用过盈的方式插接固定，方便进行安装。
所述夹爪22前端的内侧设置有倒角，倒角221的设置能够将所述抵接部31导向插入到夹爪22内侧，避免出现卡死的情况。
本发明自动铅笔的实施例2如图3-4所示：包括有笔杆11、位于笔杆11前端的端盖12，笔杆11和端盖12之间设置有出芯机构，所述出芯机构包括有出芯管21、与铅芯0配合夹持的夹爪22、与夹爪22配合活动套接的套环23，所述夹爪22伸缩设置在出芯管21的前端，端盖12的后端包括有插装定位在笔杆11内侧的插入部122，所述端盖12的后端还具有凹孔123，所述插入部122与所述套环23配合进行限位，利用夹爪22和套环23的相对运动实现夹爪22向前运动时的张开并解除对铅芯0的夹持、向后运动时能够重新夹持在铅芯0上并对铅芯0进行固定。
所述夹爪22的前方设置有抵接构件3，抵接构件3设置笔杆11的前端和端盖12之间的位置，并位于笔的内侧，所述抵接构件3的与夹爪22相对应的后端设置有抵接部31，所述抵接部31包括有供铅芯0活动穿设的第一通孔311，所述抵接部31能够基于夹爪22的向前运动插入到夹爪22内侧，使夹爪22和铅芯0之间黏接处能够分离，促使夹爪22能够在自身弹性作用下正常张开。
所述抵接构件3包括有与笔的端盖12配合连接的基部32，所述抵接部31和基部32为一体成型，抵接部31位于基部32的后端，所述抵接部31的外侧具有第二导向锥面313，第二导向锥面313的外径自后向前渐大设置，所述基部32从端盖12的后端插装固定在凹孔123的内侧，凹孔123的侧壁设置有能够在基部32插入后防止其脱出的限位凸起121，能够提高端盖12和端盖12之间连接固定的可靠性，在其他实施例中所述基部32也可以和笔杆11配合进行固定连接。
在实施例2中，由于所述抵接部31和基部32为一体成型，能够方便生产加工以及减少抵接部31和基部32之间的装配工序，将抵接部31设置成锥形结构，能够提高抵接部31在与夹爪22抵触配合时的强度，不容易变形、损坏，而且能够将所述抵接部31导向插入到夹爪22内侧和铅芯0之间，此外利用其第二导向锥面313在与夹爪22内侧抵触配合的同时还能够给予夹爪22朝张开方向的分力，能够进一步地的提高夹爪22的张开效果。
所述夹爪22前端的内侧设置有倒角，倒角221的设置能够起到将所述抵接部31导向插入到夹爪22内侧以及促进夹爪22张开的作用，避免出现卡死的情况，进一步地提高使用效果。
本发明自动铅笔的实施例3如图5-6所示：包括有笔杆11、位于笔杆11前端的端盖12，笔杆11和端盖12之间设置有出芯机构，所述出芯机构包括有出芯管21、与铅芯0配合夹持的夹爪22、与夹爪22配合活动套接的套环23，所述夹爪22伸缩设置在出芯管21的前端，端盖12的后端包括有插装定位在笔杆11内侧的插入部122，所述插入部122与所述套环23配合进行限位，利用夹爪22和套环23的相对运动实现夹爪22向前运动时的张开并解除对铅芯0的夹持、向后运动时能够重新夹持在铅芯0上并对铅芯0进行固定。
所述夹爪22的前方设置有抵接构件3，抵接构件3设置笔杆11的前端和端盖12之间的位置，并位于笔的内侧，所述抵接构件3的与夹爪22相对应的后端设置有抵接部31，所述抵接部31包括有供铅芯0活动穿设的第一通孔311，所述抵接部31能够基于夹爪22的向前运动插入到夹爪22内侧，使夹爪22和铅芯0之间黏接处能够分离，促使夹爪22能 够在自身弹性作用下正常张开。
所述端盖12的后端具有凹孔123，所述抵接构件3设置在凹孔123的轴心位置，抵接构件3呈筒状结构，抵接构件3的前端与端盖12一体连接，抵接构件3和凹孔123侧壁之间留有间隙124，所述抵接部31的外侧具有第二导向锥面313，第二导向锥面313的外径自后向前渐大设置，所述抵接构件3的后端沿其轴心周向开设有若干槽缝33。将抵接构件3直接一体成型在端盖12上，方便生产加工，能够降低成本，将抵接部31设置成锥形结构，能够提高抵接部31在与夹爪22抵触配合时的强度，不容易变形、损坏，而且能够将所述抵接部31导向插入到夹爪22内侧和铅芯0之间，此外利用其第二导向锥面313在与夹爪22内侧抵触配合的同时还能够给予夹爪22朝张开方向的分力，能够进一步地的提高夹爪22的张开效果。
槽缝33的设置使得抵接构件3能够给予穿设在第一通孔311中的铅芯0一定的弹性夹紧效果，提高铅芯0运动的阻尼，从而能够减少书写时铅芯0的晃动，提高书写效果，间隙124能够给予抵接构件3向外侧方向形变的空间，提高其弹性形变效果。为了进一步地提高这种阻尼效果，所述第一通孔311的内侧设置有凸起3111。
所述夹爪22前端的内侧设置有倒角221，倒角221的设置能够起到将所述抵接部31导向插入到夹爪22内侧以及促进夹爪22张开的作用，避免出现卡死的情况，进一步地提高使用效果。
本发明自动铅笔的实施例4如图7-8所示：包括有笔杆11、位于笔杆11前端的端盖12，笔杆11和端盖12之间设置有出芯机构，所述出芯机构包括有出芯管21、与铅芯0配合夹持的夹爪22、与夹爪22配合活动套接的套环23，所述夹爪22伸缩设置在出芯管21的前端，端盖12的后端包括有插装定位在笔杆11内侧的插入部122，所述插入部122与所述套环23配合进行限位，利用夹爪22和套环23的相对运动实现夹爪22向前运动时的张开并解除对铅芯0的夹持、向后运动时能够重新夹持在铅芯0上并对铅芯0进行固定。
所述夹爪22的前方设置有抵接构件3，所述抵接构件3的与夹爪22相对应的后端设置有抵接部31，所述抵接部31包括有供铅芯0活动穿设的第一通孔311，所述抵接部31能够基于夹爪22的向前运动插入到夹爪22内侧，使夹爪22和铅芯0之间黏接处能够分离，促使夹爪22能够在自身弹性作用下正常张开。
所述抵接部31的外侧具有第二导向锥面313，第二导向锥面313的外径自后向前渐大设置，将抵接部31设置成锥形结构，能够提高抵接部31在与夹爪22抵触配合时的强 度，不容易变形、损坏，而且能够将所述抵接部31导向插入到夹爪22内侧和铅芯0之间，此外利用其第二导向锥面313在与夹爪22内侧抵触配合的同时还能够给予夹爪22朝张开方向的分力，能够进一步地的提高夹爪22的张开效果。
所述夹爪22前端的内侧设置有倒角221，倒角221的设置能够起到将所述抵接部31导向插入到夹爪22内侧以及促进夹爪22张开的作用，避免出现卡死的情况，进一步地提高使用效果。
所述抵接构件3设置笔杆11的前端和端盖12之间的位置，位于笔的内侧，并且能够沿笔的前后方向运动，抵接部件3的前端抵设有弹簧4，抵接部件3的前端具有供弹簧4套接定位的套接定位部34，抵接部件3的中部具有环形凸缘35，所述弹簧4的后端套设在所述套接定位部34上并同时抵接在环形凸缘35上。
所述端盖12的后端具有凹孔123，凹孔123的轴心位置设置有与铅芯0配合穿设的筒部125，筒部125和凹孔123侧壁之间留有环形的间隙124，所述弹簧4的前端插装在所述间隙124中，所述抵接构件3沿笔的轴向活动设置在所述凹孔123中，抵接部件3的环形凸缘35与凹孔123内壁构成滑动配合。所述凹孔123的侧壁设置有能够与所述环形凸缘35配合对抵接部件3的向后运动进行限制的限位部件126。
通过弹簧4为抵接部件3提供弹性的支撑作用力，弹簧4在挤压收缩时给予抵接部件3的作用力逐渐增大，使得抵接部件3与夹爪22之间的配合更加平稳，避免在按压笔后端的尾盖时产生突兀感，使出芯过程更加顺畅，手部按压施力更加平顺，提高操作舒适度。
当然在其他实施例中，所述抵接构件3和弹簧4也可以均是设置在笔杆11的内侧，也能够实现相同的效果。
以上实施例，只是本发明优选地具体实施例的一种，本领域技术人员在本发明技术方案范围内进行的通常变化和替换都包含在本发明的保护范围内。

Claims (10)

  1. 一种自动铅笔，包括有用于配合出芯的夹爪，其特征在于：所述夹爪的前方设置有抵接构件，所述抵接构件的与夹爪相对应的后端设置有抵接部，所述抵接部包括有供铅芯活动穿设的第一通孔，所述抵接部能够基于夹爪的向前运动插入到夹爪内侧。
  2. 根据权利要求1所述的自动铅笔，其特征在于：所述抵接部由金属材质制成且呈筒状结构，所述抵接构件包括有与笔的笔杆或端盖配合连接的基部，所述抵接部与基部后端配合连接固定，所述基部由塑料材质制成。
  3. 根据权利要求2所述的自动铅笔，其特征在于：所述基部包括有与第一通孔配合同轴连接的第二通孔，所述第二通孔的后端内侧开设有供抵接部的前端插装定位的环形安装槽。
  4. 根据权利要求3所述的自动铅笔，其特征在于：所述第二通孔的后端具有第一导向锥面。
  5. 根据权利要求1所述的自动铅笔，其特征在于：所述抵接构件包括有与笔的笔杆或端盖配合连接的基部，所述抵接部一体连接在基部的后端，所述抵接部的外侧具有第二导向锥面。
  6. 根据权利要求1所述的自动铅笔，其特征在于：所述抵接构件为独立的部件，其通过安装固定在笔的端盖或笔杆上。
  7. 根据权利要求1所述的自动铅笔，其特征在于：包括有位于笔的前端的端盖，所述端盖的后端具有凹孔，所述抵接构件设置在凹孔的轴心位置，抵接构件呈筒状结构，抵接构件的前端与端盖一体连接，抵接构件和凹孔侧壁之间留有间隙，所述抵接部的外侧具有第二导向锥面。
  8. 根据权利要求1所述的自动铅笔，其特征在于：所述抵接构件能够沿笔的前后方向运动，抵接部件的前端抵设有弹簧。
  9. 根据权利要求8所述的自动铅笔，其特征在于：包括有能够对抵接部件的向后运动进行限制的限位部件，所述限位部件设置在笔的笔杆或端盖上。
  10. 根据权利要求1至9中任意一项所述的自动铅笔，其特征在于：所述夹爪前端的内侧设置有倒角。
PCT/CN2021/134378 2021-07-23 2021-11-30 自动铅笔 WO2023000576A1 (zh)

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CN113427930A (zh) * 2021-07-23 2021-09-24 温州天骄笔业有限责任公司 自动铅笔

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