WO2022222260A1 - Electric screwdriver - Google Patents

Electric screwdriver Download PDF

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Publication number
WO2022222260A1
WO2022222260A1 PCT/CN2021/101387 CN2021101387W WO2022222260A1 WO 2022222260 A1 WO2022222260 A1 WO 2022222260A1 CN 2021101387 W CN2021101387 W CN 2021101387W WO 2022222260 A1 WO2022222260 A1 WO 2022222260A1
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WO
WIPO (PCT)
Prior art keywords
casing
circuit board
electric screwdriver
output shaft
electric
Prior art date
Application number
PCT/CN2021/101387
Other languages
French (fr)
Chinese (zh)
Inventor
杨勇
Original Assignee
苏州造物空间智能科技有限公司
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Application filed by 苏州造物空间智能科技有限公司 filed Critical 苏州造物空间智能科技有限公司
Publication of WO2022222260A1 publication Critical patent/WO2022222260A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose

Definitions

  • the invention relates to an electric tool, in particular to an electric screwdriver.
  • the electric screwdriver is a kind of electric tool for screw installation and removal, which includes: a bit, a motor, a battery and other structures.
  • the rear end of the existing hand-held electric screwdriver cannot be pressed against the palm of the hand when in use, so that it cannot be easily pivoted, thereby affecting the use of the tool. Therefore, it is necessary to propose further solutions for the above problems.
  • the present invention aims to provide an electric screwdriver to overcome the deficiencies in the prior art, and to add a new way of using the electric screwdriver.
  • the technical scheme of the present invention is:
  • An electric screwdriver comprising: a bit head, an electric part, a shell, an end cover and a palm rest;
  • the electric part is installed in the casing
  • the bit head is installed at one end of the casing, and is in driving connection with the output end of the electric part
  • the end cover is installed at the other end of the casing
  • the palm rest is pivotally connected to the end cover, and the pivot axis of the palm rest is coaxial with the axis of the housing, and the palm rest also has a force-bearing surface that can abut against a human hand.
  • the end cover is screwed to the rear end of the housing, and the end surface of the end cover also has a rotating shaft suitable for the pivotal connection of the palm rest.
  • the palm rest can rotate 360° in the plane where it is located.
  • the casing includes: an inner casing and an outer casing, the inner casing is arranged in the outer casing, and the outer casing has a function of snapping into the inner casing.
  • the inner casing includes: a left casing and a right casing, the end faces of the left casing and the right casing are fitted with each other, and the two together define the assembly space of the electric part.
  • the electric part includes: a transmission mechanism, a circuit board and a power supply;
  • the power source is arranged in the battery compartment at the rear of the casing, the transmission mechanism is located in the installation cavity at the front of the casing, and the circuit board is located between the transmission mechanism and the power source, and the power source passes through
  • the positive electrode sheet is electrically connected with the circuit board, the circuit board is also electrically connected with the casing through the negative electrode sheet, and the circuit board is electrically connected with the transmission mechanism.
  • the transmission mechanism includes: an output shaft, a positioning sleeve, a shift fork, a cylindrical pin and a motor, one end of the output shaft forms the output end of the electric part, and the fork of the shift fork forms the output end of the electric part.
  • the leg is sleeved on the other end of the output shaft, and the cylindrical pin is arranged between any two adjacent fork legs, the positioning sleeve is sleeved on the fork legs of the shifting fork, any one of the cylindrical pins
  • the pin abuts against the inner side surface of the positioning sleeve and the outer side surface of the other end of the output shaft, and the motor shaft of the motor is connected with the shifting fork in a driving manner.
  • the outer surface of the other end of the output shaft abutting against the cylindrical pin is a combination of an arc surface and two flat surfaces, wherein the angle between the two flat surfaces is less than 180°.
  • the two sides of the positioning sleeve are further provided with limiting protrusions that are snapped into the housing.
  • the circuit board includes a control circuit board and a speed-adjusting circuit board arranged up and down, the power supply is electrically connected to the control circuit board through a positive electrode piece, and the control circuit board is also The negative electrode plate is electrically connected to the casing, the control circuit board has a forward rotation button and a reverse rotation button arranged on one side of the casing, and the speed regulating circuit board has a forward rotation button arranged on the other side of the casing Speed switch.
  • the output shaft is hollow, the bit head can be inserted into the output shaft, and a magnet capable of attracting the bit head is also arranged in the output shaft.
  • the beneficial effects of the present invention are: the electric screwdriver of the present invention is beneficial to reduce the resistance of the electric screwdriver during operation by providing a freely pivotable palm rest at the rear end, and is convenient for the operation of the electric screwdriver. Free rotation and operation improve the practicality and comfort of the electric screwdriver.
  • FIG. 1 is a perspective exploded schematic view of an embodiment of an electric screwdriver of the present invention
  • Fig. 2 is the three-dimensional enlarged schematic diagram of the output shaft in Fig. 1;
  • Fig. 3 is the end face schematic diagram of the output shaft in Fig. 2;
  • FIG. 4 is a schematic cross-sectional view of the electric screwdriver according to an embodiment of the present invention, when the output shaft is reversed and self-locking;
  • FIG. 5 is a schematic cross-sectional view of the output shaft when the output shaft rotates forward and self-locks in an embodiment of the electric screwdriver of the present invention.
  • an electric screwdriver As shown in FIG. 1 , an electric screwdriver according to an embodiment of the present invention includes a bit 10 , an electric part 20 , a casing 30 , an end cover 40 and a palm rest 50 .
  • the electric part 20 is used to realize the rotation of the bit head 10 , and is installed in the casing 30 . In this way, when the electric part 20 is working, the bit head 10 can be driven to rotate forwardly or reversely.
  • the end cover 40 is installed on the other end of the casing 30 , the palm rest 50 is pivotally connected to the end cover 40 , and the pivot axis of the palm rest 50 is coaxial with the axis of the casing 30 .
  • the electric screwdriver can pivot freely relative to the palm rest 50, which is beneficial to reduce the resistance of the electric screwdriver during operation and facilitate the free rotation and operation of the electric screwdriver.
  • the palm rest 50 also has a force bearing surface capable of abutting against the human hand.
  • the end cover 40 is screwed to the rear end of the housing 30 , and the end surface of the end cover 40 also has a rotating shaft 41 suitable for the pivot connection of the palm rest 50 .
  • the palm rest 50 is pivotally connected to the rotating shaft 41 through a bearing 51 .
  • the palm rest 50 can rotate 360° in the plane where it is located.
  • the casing 30 includes: an inner casing 31 and an outer casing 32 .
  • the outer casing 32 is arranged axially through the outer casing 32, the above-mentioned end cover 40 is screwed to the rear end of the outer casing 32, and at the same time, the front end of the outer casing 32 is also buckled with a protective sleeve 33, and the protective sleeve 33 is arranged axially through, so as to The bit 10 can be assembled at the front end of the outer casing 32 .
  • the inner casing 31 is disposed in the outer casing 32 .
  • the outer casing 32 has a buckle which is inserted into the inner casing 31 .
  • the buckles can be provided in multiple numbers, and the plurality of buckles are distributed on the inner side surface of the outer casing 32 along the circumferential direction, and are inserted into the corresponding card slots.
  • the inner casing 31 includes a left casing 311 and a right casing 312 .
  • the end faces of the left casing 311 and the right casing 312 are fitted with each other, and the two together define the assembly space of the electric part 20 .
  • the front part of the assembly space forms an installation cavity, and the rear part forms a battery compartment.
  • the electric part 20 includes: a transmission mechanism 21 , a circuit board 22 and a power source 23 .
  • the power supply 23 supplies power to the transmission mechanism 21 and the circuit board 22 , and the circuit board 22 controls the operation of the transmission mechanism 21 .
  • the power source 23 is arranged in the battery compartment at the rear of the housing 30
  • the transmission mechanism 21 is arranged in the installation cavity at the front of the housing 30 .
  • the transmission mechanism 21 is used to directly drive the bit 10 to pivot, and includes an output shaft 211 , a positioning sleeve 212 , a shifting fork 213 , a cylindrical pin 214 and a motor 215 .
  • One end of the output shaft 211 forms the output end of the electric part 20, and the batch head 10 is plugged into the output end.
  • the output shaft 211 is hollow, and the batch head 10 can be inserted into the output shaft 211, and the output shaft 211 is also provided with a magnet 216 capable of attracting the batch head 10, so as to prevent batch The head 10 is disengaged from the output shaft 211 .
  • the portion of the bit 10 inserted into the output shaft 211 is designed to have at least one edge, so as to facilitate synchronous pivoting with the output shaft 211 .
  • a bearing 217 is further provided between the output shaft 211 and the housing 30 .
  • the shift fork 213 has a plurality of fork legs, and the shift fork 213 is sheathed on the other end of the output shaft 211 through the fork legs, and a cylindrical pin 214 is arranged between any two adjacent fork legs, and the positioning sleeve 212 is sheathed on the shift fork On the fork legs of 213 , any cylindrical pin 214 abuts against the inner side surface of the positioning sleeve 212 and the outer side surface of the other end of the output shaft 211 .
  • the motor 215 shaft of the motor 215 is connected with the special-shaped hole provided on the shift fork 213 in a driving manner. In one embodiment, as shown in FIGS.
  • the outer side surface of the other end of the output shaft 211 abutting against the cylindrical pin 214 is the combination of the arc surface 211B and the two flat surfaces 211A and 211C, and the space between the two flat surfaces is The angle is less than 180°.
  • the two sides of the positioning sleeve 212 are further provided with limiting protrusions that are snapped into the housing 30 .
  • the output shaft 211 is locked by the positioning sleeve 212 because the cylindrical pin 214 is stuck, and the reverse driving force of the output shaft 211 cannot be transmitted to the output shaft 211 to the output shaft 211 .
  • the fork is directly transmitted to the positioning sleeve 212 , and the positioning sleeve 212 has no relative degree of freedom with the housing 30 , so that the output shaft 211 can be directly driven through the housing 30 .
  • the free rotation and operation of the electric screwdriver can be facilitated, thereby improving the practicability and comfort of the electric screwdriver.
  • the circuit board 22 is located between the transmission mechanism 21 and the power supply 23 .
  • the power supply 23 is electrically connected to the circuit board 22 through the positive electrode piece, the circuit board 22 is also electrically connected to the housing 30 through the negative electrode piece, and the circuit board 22 is electrically connected to the transmission mechanism 21 .
  • the circuit board 22 includes a control circuit board 221 and a speed control circuit board 222 arranged up and down. Specifically, the power supply 23 is electrically connected to the control circuit board 221 through the positive electrode sheet 24 , and the control circuit board 221 is also electrically connected to the casing 30 through the negative electrode sheet 25 , thus forming a control loop through the casing 30 .
  • the control circuit board 221 has a forward rotation button 223 and a reverse rotation button 224 arranged on one side of the casing 30 . point against each other.
  • the speed control circuit board 222 has a speed control switch 225 disposed on the other side of the casing 30, so as to facilitate the speed control operation.
  • the speed control switch 225 can abut against the corresponding contacts on the speed control circuit board 222 .
  • the power source 23 is specifically a battery, and the positive electrode of the battery is connected to the circuit board 22 via the positive electrode sheet 24 .
  • the positive electrode sheet 24 is accommodated in a pull plate 226 , and the positive electrode of the battery can be connected to the positive electrode sheet 24 when it extends into the pull plate 226 , so that the battery cannot be connected when it is placed in reverse, thereby achieving a protective effect.
  • a spring 227 is also arranged between the negative electrode of the battery and the end cover 40 .
  • the electric screwdriver of the present invention is provided with a palm rest that can pivot freely at the rear end, which is beneficial to reduce the resistance of the electric screwdriver during operation, facilitate the free rotation and operation of the electric screwdriver, and improve the electric screwdriver.
  • a palm rest that can pivot freely at the rear end

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

An electric screwdriver, comprising: a screwdriver head (10), an electric part (20), a housing (30), an end cover (40), and a palm support (50). The electric part (20) is mounted in the housing (30). The screwdriver head (10) is mounted at one end of the housing (30), and is transmittingly connected to the output end of the electric part (20). The end cover (40) is mounted at the other end of the housing (30). The palm support (50) is pivotally connected to the end cover (40), and the pivot of the palm support (50) is coaxial with the axis of the housing (30). The palm support (50) further has a force receiving surface capable of abutting against a human hand.

Description

电动螺丝批electric screwdriver 技术领域technical field
本发明涉及一种电动工具，尤其涉及一种电动螺丝批。The invention relates to an electric tool, in particular to an electric screwdriver.
背景技术Background technique
目前，电动螺丝批是一种用于螺丝安装和拆卸的电动工具，其包括：批头、电机、电池等结构。然而，现有的手自一体电动螺丝批在使用时，不能将其后端抵靠在手掌上，如此导致无法方便地对其进行枢转，进而影响工具的使用。因此，针对上述问题，有必要提出进一步地解决方案。At present, the electric screwdriver is a kind of electric tool for screw installation and removal, which includes: a bit, a motor, a battery and other structures. However, the rear end of the existing hand-held electric screwdriver cannot be pressed against the palm of the hand when in use, so that it cannot be easily pivoted, thereby affecting the use of the tool. Therefore, it is necessary to propose further solutions for the above problems.
发明内容SUMMARY OF THE INVENTION
本发明旨在提供一种电动螺丝批，以克服现有技术中存在的不足，并增加一种使用电动螺丝刀的新方式。The present invention aims to provide an electric screwdriver to overcome the deficiencies in the prior art, and to add a new way of using the electric screwdriver.
为解决上述技术问题，本发明的技术方案是：For solving the above-mentioned technical problems, the technical scheme of the present invention is:
一种电动螺丝批，其包括：批头、电动部分、壳体、端盖以及手掌托；An electric screwdriver, comprising: a bit head, an electric part, a shell, an end cover and a palm rest;
所述电动部分安装于所述壳体中，所述批头安装于所述壳体的一端，并与所述电动部分的输出端传动连接，所述端盖安装于所述壳体的另一端，所述手掌托枢转连接于所述端盖上，且所述手掌托的枢轴与所述壳体轴线同轴设置，所述手掌托还具有能够与人手相抵靠的受力面。The electric part is installed in the casing, the bit head is installed at one end of the casing, and is in driving connection with the output end of the electric part, and the end cover is installed at the other end of the casing , the palm rest is pivotally connected to the end cover, and the pivot axis of the palm rest is coaxial with the axis of the housing, and the palm rest also has a force-bearing surface that can abut against a human hand.
作为本发明的电动螺丝批的改进，所述端盖螺接于所述壳体的尾端，所述端盖的端面上还具有适于所述手掌托枢转连接的转轴。As an improvement of the electric screwdriver of the present invention, the end cover is screwed to the rear end of the housing, and the end surface of the end cover also has a rotating shaft suitable for the pivotal connection of the palm rest.
作为本发明的电动螺丝批的改进，所述手掌托能够于所在平面内360°旋转。As an improvement of the electric screwdriver of the present invention, the palm rest can rotate 360° in the plane where it is located.
作为本发明的电动螺丝批的改进，所述壳体包括：内机壳和外机壳，所述内机壳设置于所述外机壳中，所述外机壳具有卡入所述内机壳的卡扣，所述内机壳包括：左壳体和右壳体，所述左壳体与右壳体的端面相互嵌合，二者共同限定所述电动部分的装配空间。As an improvement of the electric screwdriver of the present invention, the casing includes: an inner casing and an outer casing, the inner casing is arranged in the outer casing, and the outer casing has a function of snapping into the inner casing. The inner casing includes: a left casing and a right casing, the end faces of the left casing and the right casing are fitted with each other, and the two together define the assembly space of the electric part.
作为本发明的电动螺丝批的改进，所述电动部分包括：传动机构、电路板以及电源；As an improvement of the electric screwdriver of the present invention, the electric part includes: a transmission mechanism, a circuit board and a power supply;
所述电源设置于所述壳体后部的电池仓中，所述传动机构位于所述壳体前部的安装腔中，所述电路板位于所述传动机构和电源之间，所述电源通过正极片与所述电路板电连接，所述电路板还通过负极片与所述壳体电连接，所述电路板与所述传动机构电连接。The power source is arranged in the battery compartment at the rear of the casing, the transmission mechanism is located in the installation cavity at the front of the casing, and the circuit board is located between the transmission mechanism and the power source, and the power source passes through The positive electrode sheet is electrically connected with the circuit board, the circuit board is also electrically connected with the casing through the negative electrode sheet, and the circuit board is electrically connected with the transmission mechanism.
作为本发明的电动螺丝批的改进，所述传动机构包括：输出轴、定位套、拨叉、圆柱销以及电机，所述输出轴一端形成所述电动部分的输出端，所述拨叉的叉脚套装于所述输出轴的另一端，且任意相邻的两个叉脚之间均设置有所述圆柱销，所述定位套套装于所述拨叉的叉脚上，任一所述圆柱销与所述定位套的内侧面和所述输出轴的另一端的外侧面相抵靠，所述电机的电机轴与所述拨叉传动连接。As an improvement of the electric screwdriver of the present invention, the transmission mechanism includes: an output shaft, a positioning sleeve, a shift fork, a cylindrical pin and a motor, one end of the output shaft forms the output end of the electric part, and the fork of the shift fork forms the output end of the electric part. The leg is sleeved on the other end of the output shaft, and the cylindrical pin is arranged between any two adjacent fork legs, the positioning sleeve is sleeved on the fork legs of the shifting fork, any one of the cylindrical pins The pin abuts against the inner side surface of the positioning sleeve and the outer side surface of the other end of the output shaft, and the motor shaft of the motor is connected with the shifting fork in a driving manner.
作为本发明的电动螺丝批的改进，所述输出轴的另一端与所述圆柱销相抵靠的外侧面为弧面与两个平面的组合，其中两个平面之间的角度小于180°。As an improvement of the electric screwdriver of the present invention, the outer surface of the other end of the output shaft abutting against the cylindrical pin is a combination of an arc surface and two flat surfaces, wherein the angle between the two flat surfaces is less than 180°.
作为本发明的电动螺丝批的改进，所述定位套的两侧还设置有卡入所述壳体中的限位凸起。As an improvement of the electric screwdriver of the present invention, the two sides of the positioning sleeve are further provided with limiting protrusions that are snapped into the housing.
作为本发明的电动螺丝批的改进，所述电路板包括上下布置的：控制电 路板和调速电路板，所述电源通过正极片与所述控制电路板电连接，所述控制电路板还通过负极片与所述壳体电连接，所述控制电路板具有设置于所述壳体一侧的正转按钮和反转按钮，所述调速电路板具有设置于所述壳体另一侧的调速开关。As an improvement of the electric screwdriver of the present invention, the circuit board includes a control circuit board and a speed-adjusting circuit board arranged up and down, the power supply is electrically connected to the control circuit board through a positive electrode piece, and the control circuit board is also The negative electrode plate is electrically connected to the casing, the control circuit board has a forward rotation button and a reverse rotation button arranged on one side of the casing, and the speed regulating circuit board has a forward rotation button arranged on the other side of the casing Speed switch.
作为本发明的电动螺丝批的改进，所述输出轴中空设置，所述批头能够插接于所述输出轴中，且所述输出轴中还设置有能够吸附所述批头的磁铁。As an improvement of the electric screwdriver of the present invention, the output shaft is hollow, the bit head can be inserted into the output shaft, and a magnet capable of attracting the bit head is also arranged in the output shaft.
与现有技术相比，本发明的有益效果是：本发明的电动螺丝批通过在后端设置能够自由枢转的手掌托，有利于减小电动螺丝批操作时的阻力，方便电动螺丝批的自由转动以及操作，提高了电动螺丝批的实用性以及使用时的舒适性。Compared with the prior art, the beneficial effects of the present invention are: the electric screwdriver of the present invention is beneficial to reduce the resistance of the electric screwdriver during operation by providing a freely pivotable palm rest at the rear end, and is convenient for the operation of the electric screwdriver. Free rotation and operation improve the practicality and comfort of the electric screwdriver.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明中记载的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments described in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.
图1为本发明电动螺丝批一实施例的立体分解示意图；1 is a perspective exploded schematic view of an embodiment of an electric screwdriver of the present invention;
图2为图1中输出轴的立体放大示意图；Fig. 2 is the three-dimensional enlarged schematic diagram of the output shaft in Fig. 1;
图3为图2中输出轴的端面示意图；Fig. 3 is the end face schematic diagram of the output shaft in Fig. 2;
图4为本发明电动螺丝批一实施例中，输出轴反转自锁时截面示意图；4 is a schematic cross-sectional view of the electric screwdriver according to an embodiment of the present invention, when the output shaft is reversed and self-locking;
图5为本发明电动螺丝批一实施例中，输出轴正转自锁时截面示意图。5 is a schematic cross-sectional view of the output shaft when the output shaft rotates forward and self-locks in an embodiment of the electric screwdriver of the present invention.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行 清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
如图1所示，本发明一实施例的电动螺丝批包括：批头10、电动部分20、壳体30、端盖40以及手掌托50。As shown in FIG. 1 , an electric screwdriver according to an embodiment of the present invention includes a bit 10 , an electric part 20 , a casing 30 , an end cover 40 and a palm rest 50 .
电动部分20用于实现批头10的自转，其安装于壳体30中，批头10安装于壳体30的一端，并与电动部分20的输出端传动连接。如此，当电动部分20工作时，可带动批头10进行正转或者反转。The electric part 20 is used to realize the rotation of the bit head 10 , and is installed in the casing 30 . In this way, when the electric part 20 is working, the bit head 10 can be driven to rotate forwardly or reversely.
端盖40安装于壳体30的另一端，手掌托50枢转连接于端盖40上，且手掌托50的枢轴与壳体30轴线同轴设置。如此设置，当手掌托50抵住操作者的手部时，电动螺丝批可相对手掌托50自由枢转，进而有利于减小电动螺丝批操作时的阻力，方便电动螺丝批的自由转动以及操作。同时，为了便于手掌托50与操作者的手部相抵靠，手掌托50还具有能够与人手相抵靠的受力面。The end cover 40 is installed on the other end of the casing 30 , the palm rest 50 is pivotally connected to the end cover 40 , and the pivot axis of the palm rest 50 is coaxial with the axis of the casing 30 . In this way, when the palm rest 50 is against the operator's hand, the electric screwdriver can pivot freely relative to the palm rest 50, which is beneficial to reduce the resistance of the electric screwdriver during operation and facilitate the free rotation and operation of the electric screwdriver. . At the same time, in order to facilitate the palm rest 50 to abut against the operator's hand, the palm rest 50 also has a force bearing surface capable of abutting against the human hand.
一个枢转连接的实施方式中，端盖40螺接于壳体30的尾端，端盖40的端面上还具有适于手掌托50枢转连接的转轴41。为了便于手掌托50的自由枢转，手掌托50通过一轴承51枢转连接于转轴41上。从而，手掌托50能够于所在平面内360°旋转。In an embodiment of the pivot connection, the end cover 40 is screwed to the rear end of the housing 30 , and the end surface of the end cover 40 also has a rotating shaft 41 suitable for the pivot connection of the palm rest 50 . In order to facilitate the free pivoting of the palm rest 50 , the palm rest 50 is pivotally connected to the rotating shaft 41 through a bearing 51 . Thus, the palm rest 50 can rotate 360° in the plane where it is located.
壳体30包括：内机壳31和外机壳32。The casing 30 includes: an inner casing 31 and an outer casing 32 .
其中，外机壳32轴向贯通设置，上述端盖40旋接于外机壳32的尾端，同时外机壳32的前端还扣合有一保护套33，保护套33轴向贯通设置，以便于批头10能够装配于外机壳32的前端位置。The outer casing 32 is arranged axially through the outer casing 32, the above-mentioned end cover 40 is screwed to the rear end of the outer casing 32, and at the same time, the front end of the outer casing 32 is also buckled with a protective sleeve 33, and the protective sleeve 33 is arranged axially through, so as to The bit 10 can be assembled at the front end of the outer casing 32 .
内机壳31设置于外机壳32中，相应的，外机壳32具有卡入内机壳31的卡扣。卡扣可被设置为多个，多个卡扣沿周向分布于所在外机壳32的内侧面上，并卡入对应的卡槽中。内机壳31包括：左壳体311和右壳体312。左壳体311与右壳体312的端面相互嵌合，二者共同限定电动部分20的装配空间。上述装配空间的前部形成一安装腔，后部形成一电池仓。The inner casing 31 is disposed in the outer casing 32 . Correspondingly, the outer casing 32 has a buckle which is inserted into the inner casing 31 . The buckles can be provided in multiple numbers, and the plurality of buckles are distributed on the inner side surface of the outer casing 32 along the circumferential direction, and are inserted into the corresponding card slots. The inner casing 31 includes a left casing 311 and a right casing 312 . The end faces of the left casing 311 and the right casing 312 are fitted with each other, and the two together define the assembly space of the electric part 20 . The front part of the assembly space forms an installation cavity, and the rear part forms a battery compartment.
电动部分20包括：传动机构21、电路板22以及电源23。The electric part 20 includes: a transmission mechanism 21 , a circuit board 22 and a power source 23 .
其中，电源23为传动机构21、电路板22供电，电路板22控制传动机构21的工作。安装方式上，电源23设置于壳体30后部的电池仓中，传动机构21位于壳体30前部的安装腔中。The power supply 23 supplies power to the transmission mechanism 21 and the circuit board 22 , and the circuit board 22 controls the operation of the transmission mechanism 21 . In terms of installation, the power source 23 is arranged in the battery compartment at the rear of the housing 30 , and the transmission mechanism 21 is arranged in the installation cavity at the front of the housing 30 .
传动机构21用于直接带动批头10进行枢转，其包括：输出轴211、定位套212、拨叉213、圆柱销214以及电机215。The transmission mechanism 21 is used to directly drive the bit 10 to pivot, and includes an output shaft 211 , a positioning sleeve 212 , a shifting fork 213 , a cylindrical pin 214 and a motor 215 .
其中，输出轴211一端形成电动部分20的输出端，批头10插接于该输出端上。为了便于批头10的拆卸式插接，输出轴211中空设置，批头10能够插接于输出轴211中，且输出轴211中还设置有能够吸附批头10的磁铁216，如此以防止批头10自输出轴211中脱离。同时，批头10插接于输出轴211的部分被设计为具有至少一条棱边，如此以便于随输出轴211进行同步枢转。此外，为了便于输出轴211的枢转，输出轴211与壳体30之间还设置有轴承217。One end of the output shaft 211 forms the output end of the electric part 20, and the batch head 10 is plugged into the output end. In order to facilitate the detachable plug-in of the batch head 10, the output shaft 211 is hollow, and the batch head 10 can be inserted into the output shaft 211, and the output shaft 211 is also provided with a magnet 216 capable of attracting the batch head 10, so as to prevent batch The head 10 is disengaged from the output shaft 211 . Meanwhile, the portion of the bit 10 inserted into the output shaft 211 is designed to have at least one edge, so as to facilitate synchronous pivoting with the output shaft 211 . In addition, in order to facilitate the pivoting of the output shaft 211 , a bearing 217 is further provided between the output shaft 211 and the housing 30 .
拨叉213具有多个叉脚，且拨叉213通过叉脚套装于输出轴211的另一端，且任意相邻的两个叉脚之间均设置有圆柱销214，定位套212套装于拨叉213的叉脚上，任一圆柱销214与定位套212的内侧面和输出轴211的另一端的外侧面相抵靠。同时，电机215的电机215轴与拨叉213上开设的异型孔 传动连接。一个实施方式中，如图2、3所示，输出轴211的另一端与圆柱销214相抵靠的外侧面为弧面211B与两个平面211A、211C的组合，且其中两个平面之间的角度小于180°。为了便于定位套212的装配，定位套212的两侧还设置有卡入壳体30中的限位凸起。The shift fork 213 has a plurality of fork legs, and the shift fork 213 is sheathed on the other end of the output shaft 211 through the fork legs, and a cylindrical pin 214 is arranged between any two adjacent fork legs, and the positioning sleeve 212 is sheathed on the shift fork On the fork legs of 213 , any cylindrical pin 214 abuts against the inner side surface of the positioning sleeve 212 and the outer side surface of the other end of the output shaft 211 . At the same time, the motor 215 shaft of the motor 215 is connected with the special-shaped hole provided on the shift fork 213 in a driving manner. In one embodiment, as shown in FIGS. 2 and 3 , the outer side surface of the other end of the output shaft 211 abutting against the cylindrical pin 214 is the combination of the arc surface 211B and the two flat surfaces 211A and 211C, and the space between the two flat surfaces is The angle is less than 180°. In order to facilitate the assembly of the positioning sleeve 212 , the two sides of the positioning sleeve 212 are further provided with limiting protrusions that are snapped into the housing 30 .
如此，如图4、5所示，当电机215处于驱动输出扭矩的工作状态时，拨叉213进行正向或反向旋转，同时其叉脚推动圆柱销214，并通过圆柱销214与输出轴211相接触的面推动输出轴211旋转。此时，无论拨叉213进行正向或反向旋转，都可通过输出轴211实现输出。In this way, as shown in FIGS. 4 and 5 , when the motor 215 is in the working state of driving the output torque, the shifting fork 213 rotates in the forward or reverse direction, and at the same time, the fork legs push the cylindrical pin 214, and the cylindrical pin 214 communicates with the output shaft through the cylindrical pin 214. The contact surfaces of 211 push the output shaft 211 to rotate. At this time, regardless of the forward or reverse rotation of the shift fork 213 , the output can be achieved through the output shaft 211 .
当圆柱销214卡死在定位套212与输出轴211之间时，由于圆柱销214卡死，使输出轴211被定位套212锁定，输出轴211的反向驱动力无法通过输出轴211传递至拔叉，而是直接传递给定位套212，定位套212与壳体30无相对自由度，从而可通过壳体30直接驱动输出轴211。此时，由于设置上述手掌托50，可方便电动螺丝批的自由转动以及操作，提高了电动螺丝批的实用性以及使用时的舒适性。When the cylindrical pin 214 is stuck between the positioning sleeve 212 and the output shaft 211 , the output shaft 211 is locked by the positioning sleeve 212 because the cylindrical pin 214 is stuck, and the reverse driving force of the output shaft 211 cannot be transmitted to the output shaft 211 to the output shaft 211 . Instead, the fork is directly transmitted to the positioning sleeve 212 , and the positioning sleeve 212 has no relative degree of freedom with the housing 30 , so that the output shaft 211 can be directly driven through the housing 30 . At this time, since the above-mentioned palm rest 50 is provided, the free rotation and operation of the electric screwdriver can be facilitated, thereby improving the practicability and comfort of the electric screwdriver.
电路板22位于传动机构21和电源23之间，电源23通过正极片与电路板22电连接，电路板22还通过负极片与壳体30电连接，电路板22与传动机构21电连接。The circuit board 22 is located between the transmission mechanism 21 and the power supply 23 . The power supply 23 is electrically connected to the circuit board 22 through the positive electrode piece, the circuit board 22 is also electrically connected to the housing 30 through the negative electrode piece, and the circuit board 22 is electrically connected to the transmission mechanism 21 .
其中，电路板22包括上下布置的：控制电路板221和调速电路板222。具体地，电源23通过正极片24与控制电路板221电连接，控制电路板221还通过负极片25与壳体30电连接，如此通过壳体30形成控制回路。The circuit board 22 includes a control circuit board 221 and a speed control circuit board 222 arranged up and down. Specifically, the power supply 23 is electrically connected to the control circuit board 221 through the positive electrode sheet 24 , and the control circuit board 221 is also electrically connected to the casing 30 through the negative electrode sheet 25 , thus forming a control loop through the casing 30 .
为了实现正反转操作，控制电路板221具有设置于壳体30一侧的正转按钮223和反转按钮224，上述正转按钮223和反转按钮224能够与控制电路板 221上的相应触点相抵靠。同时，调速电路板222具有设置于壳体30另一侧的调速开关225，如此以方便进行调速操作。相应的，调速开关225能够与调速电路板222上的相应触点相抵靠。In order to realize the forward and reverse operation, the control circuit board 221 has a forward rotation button 223 and a reverse rotation button 224 arranged on one side of the casing 30 . point against each other. Meanwhile, the speed control circuit board 222 has a speed control switch 225 disposed on the other side of the casing 30, so as to facilitate the speed control operation. Correspondingly, the speed control switch 225 can abut against the corresponding contacts on the speed control circuit board 222 .
电源23具体为电池，该电池的正极经上述正极片24与电路板22相连接。其中，正极片24收容于一拉板226中，电池的正极伸入拉板226中时可与正极片24连接，如此电池反向放置时无法接通，进而起到保护效果。且电池的负极与端盖40之间还设置有一弹簧227。The power source 23 is specifically a battery, and the positive electrode of the battery is connected to the circuit board 22 via the positive electrode sheet 24 . The positive electrode sheet 24 is accommodated in a pull plate 226 , and the positive electrode of the battery can be connected to the positive electrode sheet 24 when it extends into the pull plate 226 , so that the battery cannot be connected when it is placed in reverse, thereby achieving a protective effect. And a spring 227 is also arranged between the negative electrode of the battery and the end cover 40 .
综上所述，本发明的电动螺丝批通过在后端设置能够自由枢转的手掌托，有利于减小电动螺丝批操作时的阻力，方便电动螺丝批的自由转动以及操作，提高了电动螺丝批的实用性以及使用时的舒适性。To sum up, the electric screwdriver of the present invention is provided with a palm rest that can pivot freely at the rear end, which is beneficial to reduce the resistance of the electric screwdriver during operation, facilitate the free rotation and operation of the electric screwdriver, and improve the electric screwdriver. The practicality of the batch and the comfort in use.
对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and range of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.
此外，应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (10)

  1. 一种电动螺丝批，其特征在于，所述电动螺丝批包括：批头、电动部分、壳体、端盖以及手掌托；An electric screwdriver, characterized in that the electric screwdriver comprises: a head, an electric part, a casing, an end cover and a palm rest;
    所述电动部分安装于所述壳体中，所述批头安装于所述壳体的一端，并与所述电动部分的输出端传动连接，所述端盖安装于所述壳体的另一端，所述手掌托枢转连接于所述端盖上，且所述手掌托的枢轴与所述壳体轴线同轴设置，所述手掌托还具有能够与人手相抵靠的受力面。The electric part is installed in the casing, the bit head is installed at one end of the casing, and is in driving connection with the output end of the electric part, and the end cover is installed at the other end of the casing , the palm rest is pivotally connected to the end cover, and the pivot axis of the palm rest is coaxial with the axis of the housing, and the palm rest also has a force-bearing surface that can abut against a human hand.
  2. 根据权利要求1所述的电动螺丝批，其特征在于，所述端盖螺接于所述壳体的尾端，所述端盖的端面上还具有适于所述手掌托枢转连接的转轴。The electric screwdriver according to claim 1, wherein the end cover is screwed to the rear end of the housing, and the end surface of the end cover further has a rotating shaft suitable for the pivot connection of the palm rest .
  3. 根据权利要求2所述的电动螺丝批，其特征在于，所述手掌托能够于所在平面内360°旋转。The electric screwdriver according to claim 2, wherein the palm rest can rotate 360° in the plane where it is located.
  4. 根据权利要求1所述的电动螺丝批，其特征在于，所述壳体包括：内机壳和外机壳，所述内机壳设置于所述外机壳中，所述外机壳具有卡入所述内机壳的卡扣，所述内机壳包括：左壳体和右壳体，所述左壳体与右壳体的端面相互嵌合，二者共同限定所述电动部分的装配空间。The electric screwdriver according to claim 1, wherein the casing comprises: an inner casing and an outer casing, the inner casing is arranged in the outer casing, and the outer casing has a card The inner casing includes: a left casing and a right casing, the end faces of the left casing and the right casing are fitted with each other, and the two jointly define the assembly of the electric part space.
  5. 根据权利要求1所述的电动螺丝批，其特征在于，所述电动部分包括：传动机构、电路板以及电源；The electric screwdriver according to claim 1, wherein the electric part comprises: a transmission mechanism, a circuit board and a power supply;
    所述电源设置于所述壳体后部的电池仓中，所述传动机构位于所述壳体前部的安装腔中，所述电路板位于所述传动机构和电源之间，所述电源通过正极片与所述电路板电连接，所述电路板还通过负极片与所述壳体电连接，所述电路板与所述传动机构电连接。The power source is arranged in the battery compartment at the rear of the casing, the transmission mechanism is located in the installation cavity at the front of the casing, and the circuit board is located between the transmission mechanism and the power source, and the power source passes through The positive electrode sheet is electrically connected with the circuit board, the circuit board is also electrically connected with the casing through the negative electrode sheet, and the circuit board is electrically connected with the transmission mechanism.
  6. 根据权利要求5所述的电动螺丝批，其特征在于，所述传动机构包括：输出轴、定位套、拨叉、圆柱销以及电机，所述输出轴一端形成所述电动部 分的输出端，所述拨叉的叉脚套装于所述输出轴的另一端，且任意相邻的两个叉脚之间均设置有所述圆柱销，所述定位套套装于所述拨叉的叉脚上，任一所述圆柱销与所述定位套的内侧面和所述输出轴的另一端的外侧面相抵靠，所述电机的电机轴与所述拨叉传动连接。The electric screwdriver according to claim 5, wherein the transmission mechanism comprises: an output shaft, a positioning sleeve, a shifting fork, a cylindrical pin and a motor, and one end of the output shaft forms the output end of the electric part, so The fork legs of the shifting fork are sleeved on the other end of the output shaft, and the cylindrical pin is arranged between any two adjacent fork legs, and the positioning sleeve is sleeved on the fork legs of the shifting fork, Any one of the cylindrical pins abuts against the inner side surface of the positioning sleeve and the outer side surface of the other end of the output shaft, and the motor shaft of the motor is in driving connection with the shifting fork.
  7. 根据权利要求6所述的电动螺丝批，其特征在于，所述输出轴的另一端与所述圆柱销相抵靠的外侧面为弧面与两个平面的组合，其中两个平面之间的角度小于180°。The electric screwdriver according to claim 6, wherein the outer side of the other end of the output shaft abutting against the cylindrical pin is a combination of an arc surface and two planes, wherein the angle between the two planes less than 180°.
  8. 根据权利要求6所述的电动螺丝批，其特征在于，所述定位套的两侧还设置有卡入所述壳体中的限位凸起。The electric screwdriver according to claim 6, characterized in that, both sides of the positioning sleeve are further provided with limiting protrusions that are snapped into the housing.
  9. 根据权利要求5所述的电动螺丝批，其特征在于，所述电路板包括上下布置的：控制电路板和调速电路板，所述电源通过正极片与所述控制电路板电连接，所述控制电路板还通过负极片与所述壳体电连接，所述控制电路板具有设置于所述壳体一侧的正转按钮和反转按钮，所述调速电路板具有设置于所述壳体另一侧的调速开关。The electric screwdriver according to claim 5, wherein the circuit board comprises: a control circuit board and a speed regulating circuit board arranged up and down, the power supply is electrically connected to the control circuit board through a positive plate, and the power supply is electrically connected to the control circuit board. The control circuit board is also electrically connected to the casing through a negative electrode plate, the control circuit board has a forward rotation button and a reverse rotation button arranged on one side of the casing, and the speed regulation circuit board has a forward rotation button arranged on the casing The speed control switch on the other side of the body.
  10. 根据权利要求5所述的电动螺丝批，其特征在于，所述输出轴中空设置，所述批头能够插接于所述输出轴中，且所述输出轴中还设置有能够吸附所述批头的磁铁。The electric screwdriver according to claim 5, wherein the output shaft is hollow, the bit head can be inserted into the output shaft, and the output shaft is further provided with a device capable of adsorbing the batch head magnet.
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CN112975816A (en) * 2021-04-23 2021-06-18 苏州造物空间智能科技有限公司 Electric screwdriver
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