WO2021072910A1 - 一种手持电钻缓冲器 - Google Patents

一种手持电钻缓冲器 Download PDF

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Publication number
WO2021072910A1
WO2021072910A1 PCT/CN2019/120113 CN2019120113W WO2021072910A1 WO 2021072910 A1 WO2021072910 A1 WO 2021072910A1 CN 2019120113 W CN2019120113 W CN 2019120113W WO 2021072910 A1 WO2021072910 A1 WO 2021072910A1
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Prior art keywords
rod
annular
cylinder
electric drill
bearing
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PCT/CN2019/120113
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English (en)
French (fr)
Inventor
李安训
王春凯
薛传文
马庆
尹峰峰
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利华益利津炼化有限公司
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Publication of WO2021072910A1 publication Critical patent/WO2021072910A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/006—Vibration damping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
    • B23B45/003—Attachments

Definitions

  • the invention relates to a mechanical tool, in particular to a hand-held electric drill buffer.
  • the purpose of the present invention is to overcome the shortcomings of the prior art and provide a hand-held electric drill buffer.
  • a hand-held electric drill buffer which is characterized in that it includes a cylinder unit and a piston unit,
  • the cylinder unit includes a hollow annular cylinder and a support rod.
  • the support rods are several and are evenly distributed on the bottom of the hollow annular cylinder.
  • the cavity of the hollow annular cylinder is circular, and the bottom of the cavity is provided with a notch,
  • the side wall of the hollow annular cylinder is provided with a vent hole communicating with the slot,
  • the piston unit includes an annular piston rod, a bearing, and a rubber ring.
  • the top of the annular piston rod is provided with an annular base.
  • the section of the annular base is L-shaped.
  • the bearing is arranged in the annular base, and the outer ring of the bearing is connected to the annular base.
  • the base is fixedly connected, the inner ring of the bearing is sleeved with a rubber ring, and the ring-shaped piston rod is inserted into the cavity of the hollow ring-shaped cylinder and can slide up and down in the cavity.
  • a cylindrical groove is provided below the notch, the notch is in communication with the side wall of the cylindrical groove, the vent is in communication with the cylindrical groove, and the cylindrical groove is provided with a spring I Harmonic valve, the valve has a circular ring structure, the outer diameter of the valve is larger than the inner diameter of the vent hole, one end of the spring I is pressed against the rear wall of the cylindrical groove, and the other end is connected to the valve, and the valve is pressed against the cylindrical groove
  • the front wall blocks the vent hole, and the center hole of the valve communicates with the vent hole.
  • a spring II is pressed below the annular piston rod, and the bottom end of the spring II is pressed against the bottom of the hollow annular cylinder chamber.
  • the outer wall of the bottom of the annular piston rod is provided with a sealing ring for sealing the gap between the annular piston rod and the inner wall of the hollow annular cylinder.
  • the top of the bearing is provided with an end cover, and the end cover is fixedly connected with the outer ring of the bearing.
  • the support rod is a telescopic rod, including an outer rod and an inner rod, the top end of the outer rod is fixedly connected to the bottom of the hollow annular cylinder, and the upper end of the inner rod is inserted into the outer rod and is threadedly connected with the outer rod.
  • the drill clamp of the hand-held electric drill is sleeved through the bearing. Therefore, only the inner ring of the bearing rotates together during the rotation of the drill clamp, and the annular piston rod and the hollow annular cylinder are stable and stable, which can realize stable support and prevent the drill bit from sliding and vibration.
  • the present invention will dampen the hand-held electric drill upward to offset the impact force of the hand-held electric drill, thereby avoiding the operator from being injured by losing the center of gravity, and preventing the deviation of the punching size, and ensuring the punching quality.
  • Figure 1 is a schematic diagram of the explosive disassembly structure of the present invention
  • Figure 2 is a cross-sectional view of the present invention
  • Fig. 3 is an enlarged schematic diagram of A in Fig. 2;
  • Figure 4 is a cross-sectional view of the hollow annular cylinder
  • Fig. 5 is an enlarged schematic diagram of B in Fig. 4.
  • a handheld electric drill buffer includes a cylinder unit and a piston unit;
  • the cylinder unit includes a hollow ring cylinder 1 and a support rod 2.
  • the support rods 2 are three and are evenly distributed at the bottom of the hollow ring cylinder 1.
  • the support rod 2 is a telescopic rod, including an outer rod 21 and an inner rod 22,
  • the top end of the outer rod 21 is fixedly connected to the bottom of the hollow annular cylinder 1, and the upper end of the inner rod 22 is inserted into the outer rod 21 and is threadedly connected with the outer rod 21.
  • the cavity 11 of the hollow annular cylinder 1 is circular, the bottom of the cavity 11 is provided with a notch 12, and a cylindrical groove 13 is provided below the notch 12, and the notch 12 is connected to the cylindrical recess.
  • the side wall of the groove 13 is connected, the side wall of the hollow annular cylinder 1 is provided with a vent 14 communicating with the cylindrical groove 13, and the cylindrical groove 13 is provided with a spring I 15 and a valve 16, the valve 16 being round Ring structure, the outer diameter of the valve 16 is larger than the inner diameter of the vent hole 14.
  • One end of the spring I 15 is pressed against the rear wall of the cylindrical groove 13, and the other end is connected to the valve 16, and the valve 16 is pressed against the front wall of the cylindrical groove 13
  • the vent hole 14 is blocked, and the center hole of the valve 16 is in communication with the vent hole 14.
  • the piston unit includes an annular piston rod 3, a bearing 4, and a rubber ring 5.
  • the top of the annular piston rod 3 is provided with an annular base 31, the section of the annular base 31 is L-shaped, and the bearing 4 is arranged in the annular base 31
  • the outer ring of the bearing 4 is fixedly connected to the annular base 31, the inner ring of the bearing 4 is sleeved with a rubber ring 5, the top of the bearing 4 is provided with an end cover 6, and the end cover 6 is fixedly connected to the outer ring of the bearing 4.
  • the annular piston rod 3 is inserted into the cavity 11 of the hollow annular cylinder 1 and can slide up and down in the cavity 11.
  • the bottom of the annular piston rod 3 is pressed against the spring II7, and the bottom end of the spring II7 is pressed against the chamber 11.
  • the outer wall of the bottom of the annular piston rod 3 is provided with a sealing ring 32 for sealing the gap between the annular piston rod 3 and the inner wall of the hollow annular cylinder 1.
  • the bearing 4 of the present invention When in use, the bearing 4 of the present invention is sleeved with the drill clamp of the hand-held electric drill, clamped by the rubber ring 5, the length of the support rod 2 is adjusted for stable support, and then the drilling operation is performed. During the drilling process, the annular piston rod 3 moves down and the cavity The air in the chamber 11 is slowly discharged through the notch 12 and the valve 16. At the moment the drilling is completed, the handheld electric drill will impact downwards, driving the annular piston rod 3 to move down suddenly to compress the air in the chamber 11, causing the air pressure in the chamber 11 to increase suddenly. However, because the size of the center hole of the valve 16 has not changed, the exhaust speed is limited.
  • the air in the chamber 11 will give the hand-held electric drill an upward damping to offset the impact force of the hand-held electric drill.
  • the spring II7 will push up the annular piston rod 3 to reset upwards.
  • the spring I15 Under the external air pressure, the spring I15 will be compressed, the vent hole 14 will be fully opened, and the annular piston rod 3 will quickly reset.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)

Abstract

一种手持电钻缓冲器，包括气缸单元和活塞单元，气缸单元包括中空环形气缸（1）和支撑杆（2），支撑杆为数根并均布在中空环形气缸底部，中空环形气缸的腔室（11）为圆环形，腔室底部设有槽口（12），中空环形气缸侧壁设有与槽口连通的通气孔（14），活塞单元包括环形活塞杆（3）、轴承（4）、橡胶圈（5），环形活塞杆顶部设有环形底座（31），轴承设于环形底座内，轴承内圈套接橡胶圈，环形活塞杆***中空环形气缸腔室内，并可在腔室内上下滑动。该缓冲器可防止手持电钻操作时钻头滑动和振动，并在钻孔完成瞬间抵消手持电钻的冲击力，避免打孔尺寸出现偏差，保证打孔质量。

Description

一种手持电钻缓冲器 技术领域
本发明涉及机械工具，具体涉及一种手持电钻缓冲器。
背景技术
目前人们在工作生活中经常要用手持电钻在钢板、木板等材料上面打孔。刚开始打孔时电钻因转动会出现打滑现象；在打孔快穿透的瞬间，由于按压的惯性及电钻旋转速度非常快，导致打孔尺寸极易出现偏差，甚至会使操作人员因失去重心而受伤。
发明内容
本发明的目的在于克服现有技术存在的缺点，提供一种手持电钻缓冲器。
为了实现上述目的，本发明的技术方案是：一种手持电钻缓冲器，其特征在于：包括气缸单元和活塞单元，
所述气缸单元包括中空环形气缸和支撑杆，所述支撑杆为数根并均布在中空环形气缸底部，所述中空环形气缸的腔室为圆环形，所述腔室底部设有槽口，所述中空环形气缸侧壁设有与槽口连通的通气孔，
所述活塞单元包括环形活塞杆、轴承、橡胶圈，所述环形活塞杆顶部设有环形底座，所述环形底座截面为L形，所述轴承设于环形底座内，所述轴承外圈与环形底座固定连接，所述轴承内圈套接橡胶圈，所述环形活塞杆***中空环形气缸腔室内，并可在腔室内上下滑动。
进一步地；所述槽口下方设有圆柱形凹槽，所述槽口与圆柱形凹槽侧壁连通，所述通气孔与圆柱形凹槽连通，所述圆柱形凹槽内设有弹簧Ⅰ和气门，所述气门为圆环形结构，所述气门外径大于通气孔内径，所述弹簧Ⅰ一端抵在圆柱形凹槽后壁，另一端连接气门，并将气门抵在圆柱形凹槽前壁封堵住通气孔，所述气门中心孔与通气孔连通。
进一步地；所述环形活塞杆下方抵有弹簧Ⅱ，所述弹簧Ⅱ的底端抵在中空环形气缸腔室底部。
进一步地；所述环形活塞杆底部外壁设有密封圈，用于密封环形活塞杆与中空环形气缸内壁之间的间隙。
进一步地；所述轴承顶部设有端盖，所述端盖与轴承外圈固定连接。
进一步地；所述支撑杆为伸缩杆，包括外杆和内杆，所述外杆顶端固定连接中空环形气缸底部，所述内杆上端***外杆内部，且与外杆螺纹连接。
进一步地；所述支撑杆为3根。
本发明的有益效果：
本发明通过轴承套接手持电钻的钻夹，因此钻夹转动过程中只有轴承内圈一起转动，环形活塞杆和中空环形气缸均稳定不动，可实现稳定支撑，防止手持电钻操作时钻头滑动和振动。在钻孔完成瞬间手持电钻向下冲击时，本发明会给手持电钻向上的阻尼，抵消手持电钻的冲击力，从而避免操作人员因失去重心而受伤，同时防止打孔尺寸出现偏差，保证打孔质量。
附图说明
图1是本发明***拆分结构示意图；
图2是本发明剖视图；
图3是图2中A的放大示意图；
图4是中空环形气缸剖视图；
图5是图4中B的放大示意图。
其中：1、中空环形气缸；11、腔室；12、槽口；13、圆柱形凹槽；14、通气孔；15、弹簧Ⅰ；16、气门；2、支撑杆；21、外杆；22、内杆；3、环形活塞杆；31、环形底座；32、密封圈；4、轴承；5、橡胶圈；6、端盖；7、弹簧Ⅱ。
具体实施方式
实施例：
如图1至图5所示，一种手持电钻缓冲器，包括气缸单元和活塞单元；
所述气缸单元包括中空环形气缸1和支撑杆2，所述支撑杆2为3根并均布在中空环形气缸1底部，所述支撑杆2为伸缩杆，包括外杆21和内杆22，所述外杆21顶端固定连接中空环形气缸1底部，所述内杆22上端***外杆21内部，且与外杆21螺纹连接。所述中空环形气缸1的腔室11为圆环形，所述腔室11底部设有槽口12，所述槽口12下方设有圆柱形凹槽13，所述槽口12与圆柱形凹槽13侧壁连通，所述中空环形气缸1侧壁设有与圆柱形凹槽13连通的通气孔14，所述圆柱形凹槽13内设有弹簧Ⅰ15和气门16，所述气门16为圆环形结构，所述气门16外径大于通气孔14内径，所述弹簧Ⅰ15一端抵在圆柱形凹槽13后壁，另一端连接气门16，并将气门16抵在圆柱形凹槽13前壁封堵住通气孔14，所述气门16中心孔与通气孔14连通。
所述活塞单元包括环形活塞杆3、轴承4、橡胶圈5，所述环形活塞杆3顶部设有环形底座31，所述环形底座31截面为L形，所述轴承4设于环形底座31内，所述轴承4外圈与环 形底座31固定连接，所述轴承4内圈套接橡胶圈5，所述轴承4顶部设有端盖6，所述端盖6与轴承4外圈固定连接。所述环形活塞杆3***中空环形气缸1腔室11内，并可在腔室11内上下滑动，所述环形活塞杆3下方抵有弹簧Ⅱ7，所述弹簧Ⅱ7的底端抵在腔室11底部，所述环形活塞杆3底部外壁设有密封圈32，用于密封环形活塞杆3与中空环形气缸1内壁之间的间隙。
使用时，将本发明轴承4套接手持电钻的钻夹，通过橡胶圈5卡紧，调节支撑杆2长度进行稳定支撑，然后进行钻孔操作，钻孔过程中环形活塞杆3下移，腔室11内空气经槽口12和气门16缓慢排出，在钻孔完成瞬间，手持电钻会向下冲击，带动环形活塞杆3突然下移压缩腔室11内空气，造成腔室11气体压强突然增大，但由于气门16中心孔大小未变，排气速度受限，因此腔室11内空气会给手持电钻一个向上的阻尼，抵消手持电钻的冲击力。当钻孔完成后，弹簧Ⅱ7会顶起环形活塞杆3向上复位，在外界的空气压力下弹簧Ⅰ15压缩，通气孔14完全打开，环形活塞杆3快速复位。
以上所述的实施例只是本发明较佳的方案，并非对本发明作任何形式上的限制，在不超出权利要求所记载的技术方案的前提下还有其它的变体及改型。
在本发明的描述中，需要理解的是，指示方位或位置关系的术语为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的设备或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。

Claims (7)

  1. 一种手持电钻缓冲器，其特征在于：包括气缸单元和活塞单元，
    所述气缸单元包括中空环形气缸和支撑杆，所述支撑杆为数根并均布在中空环形气缸底部，所述中空环形气缸的腔室为圆环形，所述腔室底部设有槽口，所述中空环形气缸侧壁设有与槽口连通的通气孔，
    所述活塞单元包括环形活塞杆、轴承、橡胶圈，所述环形活塞杆顶部设有环形底座，所述环形底座截面为L形，所述轴承设于环形底座内，所述轴承外圈与环形底座固定连接，所述轴承内圈套接橡胶圈，所述环形活塞杆***中空环形气缸腔室内，并可在腔室内上下滑动。
  2. 根据权利要求1所述的手持电钻缓冲器，其特征在于：所述槽口下方设有圆柱形凹槽，所述槽口与圆柱形凹槽侧壁连通，所述通气孔与圆柱形凹槽连通，所述圆柱形凹槽内设有弹簧Ⅰ和气门，所述气门为圆环形结构，所述气门外径大于通气孔内径，所述弹簧Ⅰ一端抵在圆柱形凹槽后壁，另一端连接气门，并将气门抵在圆柱形凹槽前壁封堵住通气孔，所述气门中心孔与通气孔连通。
  3. 根据权利要求1所述的手持电钻缓冲器，其特征在于：所述环形活塞杆下方抵有弹簧Ⅱ，所述弹簧Ⅱ的底端抵在中空环形气缸腔室底部。
  4. 根据权利要求1所述的手持电钻缓冲器，其特征在于：所述环形活塞杆底部外壁设有密封圈，用于密封环形活塞杆与中空环形气缸内壁之间的间隙。
  5. 根据权利要求1所述的手持电钻缓冲器，其特征在于：所述轴承顶部设有端盖，所述端盖与轴承外圈固定连接。
  6. 根据权利要求1所述的手持电钻缓冲器，其特征在于：所述支撑杆为伸缩杆，包括外杆和内杆，所述外杆顶端固定连接中空环形气缸底部，所述内杆上端***外杆内部，且与外杆螺纹连接。
  7. 根据权利要求1所述的手持电钻缓冲器，其特征在于：所述支撑杆为3根。
PCT/CN2019/120113 2019-10-16 2019-11-22 一种手持电钻缓冲器 WO2021072910A1 (zh)

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