CN112975816A - Electric screwdriver - Google Patents
Electric screwdriver Download PDFInfo
- Publication number
- CN112975816A CN112975816A CN202110440544.XA CN202110440544A CN112975816A CN 112975816 A CN112975816 A CN 112975816A CN 202110440544 A CN202110440544 A CN 202110440544A CN 112975816 A CN112975816 A CN 112975816A
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- CN
- China
- Prior art keywords
- shell
- screwdriver
- output shaft
- circuit board
- electric
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- Legal status (The legal status 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 status listed.)
- Pending
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Classifications
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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
Abstract
The invention provides an electric screwdriver, which comprises: the device comprises a batch head, an electric part, a shell, an end cover and a palm rest; the electric part is arranged in the shell, the screwdriver bit is arranged at one end of the shell and is in transmission connection with the output end of the electric part, the end cover is arranged at the other end of the shell, the palm support is in pivot connection with the end cover, a pivot of the palm support is coaxial with the axis of the shell, and the palm support is also provided with a stress surface capable of abutting against a human hand. The electric screwdriver disclosed by the invention is beneficial to reducing the resistance of the electric screwdriver during operation by arranging the palm support capable of freely pivoting at the rear end, is convenient for free rotation and operation of the electric screwdriver, and improves the practicability of the electric screwdriver and the comfort during use.
Description
Technical Field
The invention relates to an electric tool, in particular to an electric screwdriver.
Background
Currently, a power screwdriver is a power tool for screw installation and removal, which includes: batch head, motor, battery etc. However, when the existing manual-automatic integrated electric screwdriver is used, the rear end of the existing manual-automatic integrated electric screwdriver cannot abut against the palm of a hand, so that the existing manual-automatic integrated electric screwdriver cannot be conveniently pivoted, and the use of a tool is influenced. Therefore, it is necessary to provide a further solution to the above problems.
Disclosure of Invention
The invention aims to provide an electric screwdriver, which overcomes the defects in the prior art and adds a new mode for using the electric screwdriver.
In order to solve the technical problems, the technical scheme of the invention is as follows:
an electrically powered screwdriver, comprising: the device comprises a batch head, an electric part, a shell, an end cover and a palm rest;
the electric part is arranged in the shell, the screwdriver bit is arranged at one end of the shell and is in transmission connection with the output end of the electric part, the end cover is arranged at the other end of the shell, the palm support is in pivot connection with the end cover, a pivot of the palm support is coaxial with the axis of the shell, and the palm support is also provided with a stress surface capable of abutting against a human hand.
As an improvement of the electric screwdriver, the end cover is screwed on the tail end of the shell, and a rotating shaft suitable for the pivotal connection of the palm support is further arranged on the end surface of the end cover.
As an improvement of the electric screwdriver, the palm support can rotate 360 degrees in the plane.
As an improvement of the electric screwdriver of the present invention, the housing includes: inner casing and outer casing, inner casing set up in the outer casing, outer casing has the card and goes into the buckle of inner casing, inner casing includes: the end faces of the left shell and the right shell are mutually embedded, and the left shell and the right shell jointly limit the assembling space of the electric part.
As an improvement of the electric screwdriver of the present invention, the electric part includes: the transmission mechanism, the circuit board and the power supply;
the power set up in the battery compartment at casing rear portion, drive mechanism is located in the anterior installation cavity of casing, the circuit board is located between drive mechanism and the power, the power pass through positive plate with the circuit board electricity is connected, the circuit board still pass through the negative pole piece with the casing electricity is connected, the circuit board with the drive mechanism electricity is connected.
As an improvement of the electric screwdriver of the present invention, the transmission mechanism includes: the motor comprises an output shaft, a positioning sleeve, a shifting fork, cylindrical pins and a motor, wherein one end of the output shaft forms an output end of the electric part, fork legs of the shifting fork are sleeved at the other end of the output shaft, the cylindrical pins are 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 abuts against the inner side surface of the positioning sleeve and the outer side surface of the other end of the output shaft, and a motor shaft of the motor is in transmission connection with the shifting fork.
As an improvement of the electric screwdriver, the outer side surface of the other end of the output shaft, which is abutted against the cylindrical pin, is a combination of a cambered surface and two planes, wherein the angle between the two planes is smaller than 180 degrees.
As an improvement of the electric screwdriver, two sides of the positioning sleeve are also provided with limiting bulges clamped in the shell.
As an improvement of the electric screwdriver of the present invention, the circuit board comprises, arranged above and below: the control circuit board is provided with a forward rotation button and a reverse rotation button which are arranged on one side of the shell, and the speed regulation circuit board is provided with a speed regulation switch arranged on the other side of the shell.
As an improvement of the electric screwdriver, the output shaft is hollow, the screwdriver head can be inserted into the output shaft, and the output shaft is also internally provided with a magnet capable of adsorbing the screwdriver head.
Compared with the prior art, the invention has the beneficial effects that: the electric screwdriver disclosed by the invention is beneficial to reducing the resistance of the electric screwdriver during operation by arranging the palm support capable of freely pivoting at the rear end, is convenient for free rotation and operation of the electric screwdriver, and improves the practicability of the electric screwdriver and the comfort during use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic exploded view of an electric screwdriver according to an embodiment of the present invention;
FIG. 2 is an enlarged perspective view of the output shaft of FIG. 1;
FIG. 3 is a schematic end view of the output shaft of FIG. 2;
FIG. 4 is a schematic cross-sectional view of an embodiment of an electric screwdriver according to the present invention, illustrating a self-locking rotation of an output shaft;
FIG. 5 is a schematic cross-sectional view illustrating the forward rotation and self-locking of the output shaft according to an embodiment of the electric screwdriver of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an electric screwdriver according to an embodiment of the present invention includes: batch head 10, power section 20, housing 30, end cap 40 and palm rest 50.
The electric driving part 20 is used for realizing the rotation of the batch head 10, and is arranged in the shell 30, and the batch head 10 is arranged at one end of the shell 30 and is in transmission connection with the output end of the electric driving part 20. Thus, when the electromotive part 20 is operated, the batch head 10 is driven to rotate forward or backward.
The end cap 40 is mounted to the other end of the housing 30, the palm rest 50 is pivotally connected to the end cap 40, and the pivot axis of the palm rest 50 is arranged coaxially with the axis of the housing 30. So set up, when palm holds in the palm 50 and supports operator's hand, electronic screwdriver can hold in the palm 50 free pivots relatively, and then is favorable to reducing the resistance when electronic screwdriver operates, makes things convenient for the free rotation and the operation of electronic screwdriver. Meanwhile, in order to facilitate the palm rest 50 to abut against the hand of the operator, the palm rest 50 further has a force-bearing surface capable of abutting against the hand of the operator.
In one embodiment of the pivotal connection, the end cap 40 is screwed to the rear end of the housing 30, and the end face of the end cap 40 is further provided with a rotating shaft 41 adapted to pivotally connect the palm rest 50. To facilitate free pivoting of the palm rest 50, the palm rest 50 is pivotally connected to the shaft 41 by a bearing 51. Thus, the palm rest 50 can rotate 360 ° in the plane.
The housing 30 includes: an inner housing 31 and an outer housing 32.
The outer casing 32 is axially disposed through, the end cap 40 is screwed to the tail end of the outer casing 32, and a protective sleeve 33 is fastened to the front end of the outer casing 32, the protective sleeve 33 is axially disposed through, so that the bit 10 can be assembled to the front end of the outer casing 32.
The inner housing 31 is disposed in the outer housing 32, and accordingly, the outer housing 32 has a snap fit to the inner housing 31. The buckle can be set up to a plurality ofly, and a plurality of buckles distribute on the medial surface of the outer casing 32 that is located along circumference to in the card goes into corresponding draw-in groove. The inner case 31 includes: a left housing 311 and a right housing 312. The end surfaces of the left housing 311 and the right housing 312 are fitted to each other, and together define a fitting space of the motor portion 20. The front part of the assembly space forms an installation cavity, and the rear part forms a battery compartment.
The electromotive part 20 includes: an actuator 21, a circuit board 22, and a power supply 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. In the installation mode, the power supply 23 is arranged in the battery compartment at the rear part of the shell 30, and the transmission mechanism 21 is positioned in the installation cavity at the front part of the shell 30.
The transmission mechanism 21 is used for directly driving the batch head 10 to pivot, and comprises: an output shaft 211, a positioning sleeve 212, a shifting fork 213, a cylindrical pin 214 and a motor 215.
Wherein, one end of the output shaft 211 forms the output end of the electric part 20, and the batch head 10 is plugged on the output end. In order to facilitate the detachable insertion of the batch head 10, the output shaft 211 is hollow, the batch head 10 can be inserted into the output shaft 211, and the output shaft 211 is further provided with a magnet 216 capable of attracting the batch head 10, so as to prevent the batch head 10 from being detached from the output shaft 211. Meanwhile, the portion of the batch head 10 inserted into the output shaft 211 is designed to have at least one edge so as to pivot synchronously with the output shaft 211. In addition, a bearing 217 is provided between the output shaft 211 and the housing 30 in order to facilitate pivoting of the output shaft 211.
The shifting fork 213 is provided with a plurality of fork legs, the shifting fork 213 is sleeved at the other end of the output shaft 211 through the fork legs, a cylindrical pin 214 is arranged between any two adjacent fork legs, the positioning sleeve 212 is sleeved on the fork legs of the shifting fork 213, and 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. Meanwhile, a motor 215 shaft of the motor 215 is in transmission connection with a special-shaped hole formed in the shifting fork 213. In one embodiment, as shown in fig. 2 and 3, the outer side surface of the other end of the output shaft 211 abutting against the cylindrical pin 214 is a combination of the arc surface 211B and two planes 211A and 211C, and the angle between the two planes is less than 180 °. In order to facilitate the assembly of the positioning sleeve 212, limiting protrusions which are clamped into the shell 30 are further arranged on two sides of the positioning sleeve 212.
Thus, as shown in fig. 4 and 5, when the motor 215 is in an operating state for driving the output torque, the shift fork 213 rotates in the forward or reverse direction, and the fork leg thereof pushes the cylindrical pin 214 and the output shaft 211 through the contact surface of the cylindrical pin 214 and the output shaft 211. At this time, the output is achieved through the output shaft 211 regardless of whether the shift fork 213 is rotated in the forward direction or the reverse direction.
When the cylindrical pin 214 is clamped 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 clamped, the reverse driving force of the output shaft 211 cannot be transmitted to the shifting fork through the output shaft 211 but is directly transmitted to the positioning sleeve 212, the positioning sleeve 212 has no relative freedom with the shell 30, and therefore the output shaft 211 can be directly driven through the shell 30. At this time, the palm rest 50 is provided, so that the electric screwdriver can be conveniently rotated and operated freely, and the practicability and the comfort in use of the electric screwdriver are improved.
The circuit board 22 is located between the transmission mechanism 21 and the power supply 23, the power supply 23 is electrically connected with the circuit board 22 through a positive plate, the circuit board 22 is also electrically connected with the shell 30 through a negative plate, and the circuit board 22 is electrically connected with the transmission mechanism 21.
Wherein, circuit board 22 includes that arranged from top to bottom: a control circuit board 221 and a speed regulation circuit board 222. Specifically, the power supply 23 is electrically connected to the control circuit board 221 through the positive electrode tab 24, and the control circuit board 221 is also electrically connected to the case 30 through the negative electrode tab 25, so that a control loop is formed through the case 30.
In order to perform the forward and reverse rotation operation, the control circuit board 221 includes a forward rotation button 223 and a reverse rotation button 224 provided on one side of the housing 30, and the forward rotation button 223 and the reverse rotation button 224 can abut against corresponding contacts on the control circuit board 221. Meanwhile, the speed control circuit board 222 has a speed control switch 225 disposed at the other side of the housing 30, so as to facilitate speed control operation. Correspondingly, the speed-regulating switch 225 can abut against the corresponding contact on the speed-regulating circuit board 222.
The power supply 23 is embodied as a battery, and the positive electrode of the battery is connected to the circuit board 22 via the positive electrode tab 24. The positive plate 24 is accommodated in a pull plate 226, and the positive electrode of the battery can be connected with the positive plate 24 when extending into the pull plate 226, so that the battery cannot be connected when being placed in the reverse direction, and a protection effect is achieved. And a spring 227 is also provided between the negative electrode of the cell and the end cap 40.
In conclusion, the electric screwdriver disclosed by the invention is beneficial to reducing the resistance in the operation of the electric screwdriver by arranging the palm support capable of freely pivoting at the rear end, is convenient to freely rotate and operate, and improves the practicability and the comfort in use of the electric screwdriver.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. An electrically powered screwdriver, comprising: the device comprises a batch head, an electric part, a shell, an end cover and a palm rest;
the electric part is arranged in the shell, the screwdriver bit is arranged at one end of the shell and is in transmission connection with the output end of the electric part, the end cover is arranged at the other end of the shell, the palm support is in pivot connection with the end cover, a pivot of the palm support is coaxial with the axis of the shell, and the palm support is also provided with a stress surface capable of abutting against a human hand.
2. The electric screwdriver as recited in claim 1, wherein said end cap is threaded onto said rear end of said housing, said end cap further having a shaft on an end surface thereof adapted for pivotal attachment of said palm rest.
3. The powered screwdriver as defined in claim 2, wherein said palm rest is capable of 360 ° rotation in said plane.
4. The powered screwdriver as defined in claim 1, wherein said housing comprises: inner casing and outer casing, inner casing set up in the outer casing, outer casing has the card and goes into the buckle of inner casing, inner casing includes: the end faces of the left shell and the right shell are mutually embedded, and the left shell and the right shell jointly limit the assembling space of the electric part.
5. The powered screwdriver as defined in claim 1, wherein said powered portion comprises: the transmission mechanism, the circuit board and the power supply;
the power set up in the battery compartment at casing rear portion, drive mechanism is located in the anterior installation cavity of casing, the circuit board is located between drive mechanism and the power, the power pass through positive plate with the circuit board electricity is connected, the circuit board still pass through the negative pole piece with the casing electricity is connected, the circuit board with the drive mechanism electricity is connected.
6. The powered screwdriver as defined in claim 5, wherein said transmission mechanism comprises: the motor comprises an output shaft, a positioning sleeve, a shifting fork, cylindrical pins and a motor, wherein one end of the output shaft forms an output end of the electric part, fork legs of the shifting fork are sleeved at the other end of the output shaft, the cylindrical pins are 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 abuts against the inner side surface of the positioning sleeve and the outer side surface of the other end of the output shaft, and a motor shaft of the motor is in transmission connection with the shifting fork.
7. The electric screwdriver according to claim 6, wherein the outer side surface of the other end of the output shaft abutting against the cylindrical pin is a combination of a cambered surface and two planes, wherein the angle between the two planes is less than 180 °.
8. The electric screwdriver according to claim 6, wherein two sides of the positioning sleeve are further provided with limiting protrusions which are clamped into the shell.
9. The powered screwdriver as defined in claim 5, wherein said circuit board comprises, arranged above and below: the control circuit board is provided with a forward rotation button and a reverse rotation button which are arranged on one side of the shell, and the speed regulation circuit board is provided with a speed regulation switch arranged on the other side of the shell.
10. The electric screwdriver as claimed in claim 5, wherein the output shaft is hollow, the screwdriver head can be inserted into the output shaft, and a magnet capable of adsorbing the screwdriver head is further arranged in the output shaft.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110440544.XA CN112975816A (en) | 2021-04-23 | 2021-04-23 | Electric screwdriver |
| PCT/CN2021/101387 WO2022222260A1 (en) | 2021-04-23 | 2021-06-22 | Electric screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110440544.XA CN112975816A (en) | 2021-04-23 | 2021-04-23 | Electric screwdriver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112975816A true CN112975816A (en) | 2021-06-18 |
Family
ID=76339959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110440544.XA Pending CN112975816A (en) | 2021-04-23 | 2021-04-23 | Electric screwdriver |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112975816A (en) |
| WO (1) | WO2022222260A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113787484A (en) * | 2021-09-28 | 2021-12-14 | 苏州造物空间智能科技有限公司 | Operation method of electric screwdriver |
| WO2022222260A1 (en) * | 2021-04-23 | 2022-10-27 | 苏州造物空间智能科技有限公司 | Electric screwdriver |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107877439A (en) * | 2017-12-25 | 2018-04-06 | 郑州小动电子科技有限公司 | A kind of mini electric screwdriver |
| US20180099401A1 (en) * | 2016-10-12 | 2018-04-12 | Chang-sheng Huang | T-bar type hand tool |
| WO2018121723A1 (en) * | 2016-12-30 | 2018-07-05 | 博世电动工具（中国）有限公司 | Electric screwdriver |
| CN112621633A (en) * | 2020-12-09 | 2021-04-09 | 苏州造物空间智能科技有限公司 | Charging screwdriver |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104227632B (en) * | 2014-07-17 | 2016-04-27 | 苏州斯坦科机电有限公司 | A kind of screwdriver |
| CN208584464U (en) * | 2018-08-08 | 2019-03-08 | 深圳市喜丽时钟表文化传播有限公司 | A kind of horologic driver |
| CN112975816A (en) * | 2021-04-23 | 2021-06-18 | 苏州造物空间智能科技有限公司 | Electric screwdriver |
-
2021
- 2021-04-23 CN CN202110440544.XA patent/CN112975816A/en active Pending
- 2021-06-22 WO PCT/CN2021/101387 patent/WO2022222260A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180099401A1 (en) * | 2016-10-12 | 2018-04-12 | Chang-sheng Huang | T-bar type hand tool |
| WO2018121723A1 (en) * | 2016-12-30 | 2018-07-05 | 博世电动工具（中国）有限公司 | Electric screwdriver |
| CN107877439A (en) * | 2017-12-25 | 2018-04-06 | 郑州小动电子科技有限公司 | A kind of mini electric screwdriver |
| CN112621633A (en) * | 2020-12-09 | 2021-04-09 | 苏州造物空间智能科技有限公司 | Charging screwdriver |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022222260A1 (en) * | 2021-04-23 | 2022-10-27 | 苏州造物空间智能科技有限公司 | Electric screwdriver |
| CN113787484A (en) * | 2021-09-28 | 2021-12-14 | 苏州造物空间智能科技有限公司 | Operation method of electric screwdriver |
| WO2023050483A1 (en) * | 2021-09-28 | 2023-04-06 | 苏州造物空间智能科技有限公司 | Operation method for electric screwdriver |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022222260A1 (en) | 2022-10-27 |
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