CN112621633A

CN112621633A - Charging screwdriver

Info

Publication number: CN112621633A
Application number: CN202011428695.5A
Authority: CN
Inventors: 杨勇
Original assignee: Suzhou Creation Space Intelligent Technology Co ltd
Current assignee: Suzhou Creation Space Intelligent Technology Co ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-04-09

Abstract

The invention provides a charging screwdriver, which comprises: the output shaft, the transmission mechanism, the motor, the speed regulating mechanism and the rechargeable battery; the motor drives the output shaft to rotate through the transmission mechanism; speed adjusting mechanism and motor signal connection, speed adjusting mechanism includes: the speed regulator is arranged on the main control board, the control button can directly stir the speed regulator to move, the speed regulator feeds back a speed regulation signal to the main control board, one end of the speed regulator is connected with the elastic component, and the elastic component provides an elastic acting force for returning to an initial position for the speed regulator; the rechargeable battery is electrically connected with the motor and the speed regulating mechanism. The invention achieves the purpose of gradual change speed regulation by pushing the speed regulator and has the advantages of flexible and convenient speed regulation mode. Meanwhile, the manual output can be realized when the power of the motor is insufficient through the built-in transmission mechanism. In addition, the output shaft can swing less by additionally arranging the bearing structure.

Description

Charging screwdriver

Technical Field

The invention relates to a charging screwdriver, in particular to a manual-automatic dual-purpose charging screwdriver convenient to adjust speed.

Background

The charging screwdriver is an electric tool used for occasions involving tiny screw assembling and disassembling, such as household appliances, computers, mobile phone maintenance and the like. However, the existing charging screwdriver has the problems of insufficient electric output power and inconvenient speed regulation. Therefore, it is necessary to provide a further solution to the above problems.

Disclosure of Invention

The invention aims to provide a charging screwdriver to overcome the defects in the prior art.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a charging screwdriver, comprising: the output shaft, the transmission mechanism, the motor, the speed regulating mechanism and the rechargeable battery;

the motor drives the output shaft to rotate through the transmission mechanism;

the speed regulating mechanism with motor signal connection, the speed regulating mechanism includes: the speed regulator is arranged on the main control board, the speed regulator can be directly stirred by the control button to move, the speed regulator feeds back a speed regulating signal to the main control board, the main control board controls the gradual change of the rotating speed of the motor based on the speed regulating signal, one end of the speed regulator is connected with the elastic component, and the elastic component provides elastic acting force for returning to an initial position for the speed regulator;

the rechargeable battery is electrically connected with the motor and the speed regulating mechanism.

As an improvement of the charging screwdriver, the speed regulator is further provided with a speed regulating deflector rod, a bulge at the bottom of the control button is abutted against the speed regulating deflector rod, one end of the elastic component is connected with the speed regulating deflector rod, and the other end of the elastic component is fixedly connected with the speed regulating deflector rod.

As an improvement of the charging screwdriver of the present invention, the control button and the turning button are disposed on a surface of a housing of the charging screwdriver, the control button is connected to the speed regulator, and the housing moves linearly along an axial direction of the housing, the control button has an initial position and a second position, the control button disconnects an electrical connection of the rechargeable battery when in the initial position, the control button is capable of moving linearly between the initial position and the second position, and the control button between the initial position and the second position is capable of returning to the initial position under an action of an elastic member.

As an improvement of the charging screwdriver, the steering button outputs a steering signal to the main control board in a pressing mode.

As an improvement of the charging screwdriver, two indicator lights capable of indicating the rotating direction are arranged on the side surface of the steering button.

As an improvement of the charging screwdriver, one end of the output shaft is provided with a polygonal inner hole, a magnetic part is further arranged in the polygonal inner hole, and the peripheral side face of the other end of the output shaft is provided with a plurality of planes.

As an improvement of the charging screwdriver of the present invention, an outer peripheral side surface of one end of the output shaft, which is engaged with the transmission mechanism, has a plurality of planes or arc surfaces, and the transmission mechanism includes: the positioning device comprises a positioning sleeve, a shifting fork and a cylindrical pin, wherein a positioning bulge is arranged on the peripheral side face of the positioning sleeve, the positioning sleeve is sleeved on the outer side of the shifting fork, a cantilever of the shifting fork is matched with parts among a plurality of planes, and the cylindrical pin is limited between the planes and the positioning sleeve respectively and abuts against the corresponding planes.

As an improvement of the charging screwdriver, the peripheral side surface of one end, matched with the transmission mechanism, of the output shaft is provided with three planes or arc surfaces which are circumferentially arranged at equal intervals.

As an improvement of the charging screwdriver, the transmission mechanism further comprises a bearing, and the bearing is sleeved on the output shaft.

As an improvement of the charging screwdriver of the present invention, the charging screwdriver further includes: an inner shell and an outer shell;

the inner case includes: the left shell and the right shell are detachably connected, an assembly space of the output shaft, the transmission mechanism, the motor, the speed regulating mechanism and the rechargeable battery is limited between the left shell and the right shell, and the inner shell is assembled in the outer shell;

the output shaft extends out of the assembly space of the inner shell, the charging screwdriver further comprises a decorative sleeve sleeved on the extending end of the output shaft, and the decorative sleeve is buckled at the end part of the outer shell.

The charging screwdriver further comprises a tail cover arranged at the tail end of the shell, and a decorative gasket is arranged between the tail cover and the shell;

the charging screwdriver comprises a charging plate, one end of the charging plate is electrically connected with the rechargeable battery, and the other end of the charging plate is electrically connected with a charging interface on the tail cover.

Compared with the prior art, the invention has the beneficial effects that: the charging screwdriver achieves the purpose of gradual change speed regulation by pushing the speed regulator, and has the advantages of flexible and convenient speed regulation mode. Meanwhile, the manual output can be realized when the power of the motor is insufficient through the built-in transmission mechanism. In addition, through addding bearing structure, can make the output shaft swing little, have better stability.

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 a charging screw according to an embodiment of the present invention;

FIG. 2 is a schematic radial cross-section of the transmission of FIG. 1;

fig. 3 is a schematic axial cross-sectional view of the governor mechanism of fig. 1.

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 embodiment of the present invention provides a charging screwdriver, which includes: the device comprises an inner shell 1, an outer shell 2, an output shaft 3, a transmission mechanism 4, a motor 5, a speed regulating mechanism 6 and a rechargeable battery 7.

The inner case 1 includes: the left shell 11 and the right shell 12 are detachably connected and assembled together through a buckle and a slot set arranged on the end faces, and the assembled left shell 11 and the assembled right shell 12 limit the assembling space of the charging screwdriver. The output shaft 3, the transmission mechanism 4, the motor 5, the speed regulating mechanism 6 and the rechargeable battery 7 are installed in the assembly space. The inner shell 1 is further assembled in the outer shell 2, and the inner shell 1 is limited by the bulge on the inner side wall of the outer shell 2.

The charging screwdriver further comprises a tail cover 8 installed at the tail end of the shell 2, and a decorative gasket 81 is further arranged between the tail cover 8 and the shell 2. In the installation mode, the tail cover 8 can be clamped at the tail end of the outer shell 2 through the buckle 121 on the inner shell 1.

The output shaft 3 is used for outputting power, and the motor 5 drives the output shaft 3 to rotate through the transmission mechanism 4. The output shaft 3 extends out from the assembly space of the inner shell 1, the charging screwdriver further comprises a decorative sleeve 9 sleeved on the extending end of the output shaft 3, and the decorative sleeve 9 is buckled at the end part of the outer shell 2.

In order to match with different shapes of bits, one end of the output shaft 3 is provided with a polygonal inner hole, and a magnetic part 31 is arranged in the polygonal inner hole. Therefore, the tail end of the screwdriver head can be inserted into the polygonal inner hole and is attracted by the magnetic component. Furthermore, the other end of the output shaft 3 has a plurality of flat surfaces 32 on its outer peripheral side surface, so as to be in abutting engagement with the transmission mechanism 4 by means of the planar structure of the outer peripheral side surface. In one embodiment, the peripheral side surface of the end of the output shaft 3 that engages with the transmission mechanism 4 has three circumferentially equally spaced flat surfaces 32.

The transmission mechanism 4 can realize manual output when the power of the motor 5 is insufficient. Specifically, the transmission mechanism 4 includes: a positioning sleeve 41, a shifting fork 42 and a cylindrical pin 43.

Wherein, the periphery side of the positioning sleeve 41 is provided with a positioning protrusion 411, and the positioning sleeve 41 is sleeved outside the shifting fork 42, so as to limit the shifting fork 42 and provide a guiding function for the shifting fork 42. The cantilever of the fork 42 is engaged with the plurality of flats 32, and the cylindrical pins 43 are respectively confined between the plurality of flats 32 and the positioning sleeve 41 and abut against the corresponding flats 32.

Thus, as shown in fig. 2, when the output shaft 3 is driven to rotate by the motor 5, the shifting fork 42 pushes the cylindrical pin 43, the cylindrical pin 43 moves along with the cylindrical pin 43, the cylindrical pin 43 moves on the plane 32 of the output shaft 3, and the output shaft 3 is pushed to rotate, and power is output outwards; when the motor 5 is insufficient in power and needs manual output, at the moment, in a shutdown state, the output shaft 3 pushes the cylindrical pin 43 through the plane 32 on the output shaft, the cylindrical pin 43 is further clamped between the positioning sleeve 41 and the plane of the output shaft 3, and a clamping structure is formed due to self-locking, so that reverse output of torque can be prevented, and manual output is realized.

In addition, in order to prevent the output shaft 3 from swinging, the transmission mechanism 4 further comprises a bearing 44, and the bearing 44 is sleeved on the output shaft 3. Like this, through the mode that adopts duplex bearing 44, can provide support guiding action force to the output head, can make output shaft 3 swing little, have better stability.

The speed regulating mechanism 6 is used for regulating the rotating speed of the output head and has the advantages of flexible and convenient speed regulating mode.

Specifically, referring to fig. 3, the speed adjusting mechanism 6 is in signal connection with the motor 5, and the speed adjusting mechanism 6 includes: control button 61, main control board 62, speed governor 63, speed governing shift lever 64 and elastomeric element 65. The speed regulator 63 can adopt the existing product, and the principle of the speed regulator is that the speed regulating signal can be triggered to the main control board 62 through the self movement of the speed regulator 63, and the main control board 62 realizes the regulation of the rotating speed through the motor 5. The main control board 62 may be an existing circuit board, and those skilled in the art can select a main control board of a corresponding model according to actual requirements and apply the main control board to the present embodiment in combination.

Correspondingly, the speed regulator 63 is disposed on the main control board 62, and can be directly shifted by the control button 61 to move, and the speed regulator 63 simultaneously feeds back a signal to the main control board 62. The main control board 62 further controls the rotation speed of the motor 5 to gradually change based on the speed regulating signal. Specifically, governor 63 has an initial position and a second position, and control button 61 is capable of toggling governor 63 from the initial position to the second position. In this way, when the governor 63 is pushed by the control button 61, the torque and the rotational speed of the output head can be gradually increased; when the control button 61 is separated from the speed regulator 63, the torque and the rotation speed of the output head can be gradually reduced during the process that the speed regulator 63 returns to the initial position.

In order to allow the governor 63 to return to the initial position when the control button 61 is separated from the governor 63, one end of the governor 63 is connected to an elastic member 65, and the elastic member 65 provides the governor 63 with a return force directed from the second position to the initial position. In one embodiment, the elastic member 65 may be a spring or a tension spring.

Correspondingly, in order to facilitate the connection between the elastic component 65 and the speed regulator 63 and to push the speed regulator 63, the speed regulating shift lever 64 is arranged on the speed regulator 63, the bulge at the bottom of the control button 61 abuts against the speed regulating shift lever 64, and one end of the elastic component 65 is connected with the speed regulating shift lever 64, and the other end of the elastic component is fixedly connected. The governor 63 has both speed regulation and switching functions. The speed of the screwdriver and the magnitude of the output force vary as the speed knob moves between the initial position and the second position.

Further, the governor mechanism 6 includes a turn button 66 provided on one side of the control button 61. The motor is used for adjusting the rotation direction of the motor, the default is positive rotation, and the rotation direction is adjusted once every time the motor is pressed; and (5) repeatedly circulating. Meanwhile, a forward and reverse rotation indicator lamp can be arranged on the shell 2. As the turn button 66 is repeatedly pressed, the two lamps are repeatedly turned on, indicating the switching of the rotational direction of the output shaft of the motor.

The rechargeable battery 7 is electrically connected with the motor 5 and the speed regulating mechanism 6 to provide electric energy for the motor 5 and the speed regulating mechanism 6. Correspondingly, the screwdriver that charges includes charging panel 10, charging panel 10 one end and rechargeable battery 7 electric connection, the other end and the interface electric connection that charges on the tail-hood 8, above-mentioned interface that charges can adopt the USB interface that charges.

In conclusion, the charging screwdriver achieves the purpose of gradual speed regulation by pushing the speed regulator, and has the advantages of flexible and convenient speed regulation mode. Meanwhile, the manual output can be realized when the power of the motor is insufficient through the built-in transmission mechanism. In addition, through addding bearing structure, can make the output shaft swing little, have better stability.

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

1. A charging screw comprising: the output shaft, the transmission mechanism, the motor, the speed regulating mechanism and the rechargeable battery;

the motor drives the output shaft to rotate through the transmission mechanism;

2. The charging screwdriver as recited in claim 1, wherein the speed regulator is further provided with a speed regulating shift lever, a protrusion at the bottom of the control button abuts against the speed regulating shift lever, one end of the elastic component is connected with the speed regulating shift lever, and the other end of the elastic component is fixedly connected with the speed regulating shift lever.

3. The charging screwdriver as recited in claim 1, wherein the control button and the turning button are disposed on a surface of a housing of the charging screwdriver, the control button is connected to the speed regulator and moves linearly along an axial direction of the housing, the control button has an initial position and a second position, the control button disconnects the electrical connection of the rechargeable battery when in the initial position, the control button is capable of moving linearly between the initial position and the second position, and the control button between the initial position and the second position is capable of returning to the initial position under the action of the elastic member.

4. The charging screwdriver as recited in claim 1, wherein the turn button outputs a turn signal to the main control board by pressing.

5. The charging screwdriver as recited in claim 4, wherein the turning button is provided with two indicator lights at the side thereof for indicating the turning direction.

6. The charging screwdriver as recited in claim 1, wherein the output shaft has a polygonal inner hole at one end, a magnetic member is further disposed in the polygonal inner hole, and a plurality of flat surfaces are formed on the outer peripheral side surface at the other end of the output shaft.

7. The charging screwdriver as recited in claim 1, wherein the outer peripheral side surface of the end of the output shaft engaged with the transmission mechanism has a plurality of flat surfaces or circular arc surfaces, and the transmission mechanism comprises: the positioning device comprises a positioning sleeve, a shifting fork and a cylindrical pin, wherein a positioning bulge is arranged on the peripheral side face of the positioning sleeve, the positioning sleeve is sleeved on the outer side of the shifting fork, a cantilever of the shifting fork is matched with parts among a plurality of planes, and the cylindrical pin is limited between the planes and the positioning sleeve respectively and abuts against the corresponding planes.

8. The charging screwdriver as recited in claim 7, wherein the peripheral side surface of the end of the output shaft engaged with the transmission mechanism has three planes or arc surfaces arranged at equal intervals in the circumferential direction.

9. The charging screwdriver as recited in claim 1, wherein the transmission mechanism further comprises a bearing, and the bearing is sleeved on the output shaft.

10. The charging screwdriver as recited in claim 1, further comprising: an inner shell and an outer shell;