WO2016008321A1

WO2016008321A1 - Manual-automatic integration screwdriver and accommodating base thereof, and charging loop

Info

Publication number: WO2016008321A1
Application number: PCT/CN2015/077191
Authority: WO
Inventors: 龙军; 文研
Original assignee: 苏州斯坦科机电有限公司
Priority date: 2014-07-17
Filing date: 2015-04-22
Publication date: 2016-01-21

Abstract

Disclosed are a manual-automatic integration screwdriver and an accommodating base thereof, and a charging loop. The manual-automatic integration screwdriver comprises a shell and a screwdriver head (1) arranged in front of the shell, wherein a motor (3) is arranged in the shell, a combined mechanism (4) is arranged between the screwdriver head (1) and the motor (3), and the combined mechanism (4) enables the manual-automatic integration screwdriver to have a manual mode and an electric mode which are switched between. The accommodating base comprises a cylindrical accommodating base shell (311) and an upper cover (320), wherein the accommodating base shell (311) is provided with a screwdriver jack (351) extending in the axial direction thereof at the centre and a plurality of screwdriver head accommodating holes (352) uniformly distributed around the screwdriver jack (351). The accommodating base can cooperate with the screwdriver for charging, and can accommodate a substitute screwdriver head of the screwdriver.

Description

Hand-in-one screwdriver and its holder, and charging circuit

Technical field

The invention relates to a screwdriver and a receiving seat thereof, in particular to a screwdriver and a receiving seat which are integrated with manual and automatic, and belongs to the technical field of household or professional tools.

Background technique

A screwdriver is a tool used to twist a screw to force it into place. Usually, the screwdriver is divided into a common screwdriver, a combination screwdriver, and an electric screwdriver. The electric screwdriver is generally a combined screwdriver. Electric screwdrivers, as the name suggests, replace the manual installation and removal of screws with electric motors. Conventional small electric screwdrivers cannot be used manually without power. When used manually, the output shaft of the screwdriver is active and unlocked. status.

The prior art also involves some hand-in-one screwdrivers, which generally adopt a one-way valve to limit the position to realize the function of the hand-integration, but the large outer diameter of the one-way valve leads to its large volume, which makes the overall volume of the screwdriver product and The outer diameter is also large, which is not convenient to carry and store.

In addition, the combined screwdrivers are more inconvenient to carry because of the replacement of the batch heads, and the problem of missing the batch heads is easy to occur. However, the storage containers of the combined screwdrivers in the prior art are large in size, the internal structure is not compact, and the carrying process is in progress. Frequently, there are bad situations of scattered and abnormal sounds. For electric screwdrivers, it is also necessary to carry charging equipment or batteries, etc., which is not convenient to carry.

Summary of the invention

The object of the present invention is to solve the above technical problems and to provide a screwdriver which is small in size and has a hand-integrated function.

Another object of the present invention is to provide a holder for a replacement batch that can be charged with the screwdriver and that can accommodate the screwdriver.

The object of the present invention will be achieved by the following technical solutions:

A hand-operated screwdriver, comprising a housing and a screwdriver bit disposed in front of the housing, A motor is disposed in the housing, and a composite mechanism is disposed between the screwdriver bit and the motor, and the composite mechanism enables the manual self-integrated screwdriver to have a manual mode and an electric mode that are mutually switched. The composite mechanism includes:

An output shaft disposed between the screwdriver bit and the motor, the output shaft being provided with a front end and a rear end, the front end having a hexagon socket for inserting and circumferentially fixing the screwdriver bit The rear end is inserted into a motor shaft of the motor, and an outer contour of a cross section of the rear end has a circular arc segment and a straight line segment.

a support frame is disposed on the motor shaft of the motor and can be rotated simultaneously in the circumferential direction. In the electric mode, the motor drives the support frame to rotate, thereby driving the output shaft and the screwdriver bit to rotate.

a bearing seat fixedly coupled to the housing and having a boss for axially fixing the output shaft therein

At least one pin disposed between the output shaft and the bearing housing, and attached to the straight line segment, a maximum distance between the straight line segment and an inner wall of the bearing housing and the pin The diameter is equivalent, the distance between the arc segment and the bearing housing is smaller than the diameter of the pin,

In the electric mode, the motor drives the support frame to rotate, the pin drives the output shaft and the screwdriver bit to rotate under the driving action of the support frame; in the manual mode, when the screwdriver bit rotates The pin is connected between the straight line segment of the output shaft and the bearing housing, and the output shaft, the bearing seat, the pin and the housing are relatively fixed.

Preferably, the support frame includes a chassis, and the chassis is provided with a linkage shaft hole for mating with a motor shaft of the motor, and at least two extension arms extend from the chassis, in a radial direction The extension arm is inserted between the output shaft and the bearing housing, and the pin is circumferentially located between adjacent extension arms.

Preferably, the outer circumference of the output shaft is provided with a convex ring, and when the output shaft is inserted into the bearing housing, the convex ring abuts against the boss to axially fix the output shaft.

Preferably, the outer diameter of the bottom frame of the support frame is smaller than the maximum inner diameter of the bearing housing, so that the support frame is completely received in the bearing housing, and the pin is located in the convex ring in the axial direction. Between the chassis.

Preferably, the housing is provided with a reversing switch for controlling the rotation of the motor, the housing wall of the housing is provided with a switch button, and the switch button controls the connection of the reversing switch, the switch button is a middle pivot point, A rocker switch button that is tilted up and down at both ends, and a reset spring is disposed between the rocker switch button and the changeover switch.

Preferably, the reset shrapnel is a pot piece disposed between the switch button and the reversing switch for bridging conduction, the pot piece is formed by a central convex metal piece and uniformly distributed on the central concave metal piece. The peripheral four support ends are formed, and the support end is inserted into the slot of the casing.

Preferably, the outer casing has a support column corresponding to the switch button position, and the middle pivot of the switch button is attached to the support column to form a rocker switch button, and the switch button has two ends at the bottom a reversing switch having two contact ends opposite to the reversing contact, the cup is disposed between the contact and the contact end, and the switch button is wound around the support column In the pivoting state, the two reversing contacts of the switch button are forced to deform the central convex metal piece of the pan and to be in conduction with its corresponding contact end.

Preferably, the housing comprises a cylindrical outer casing and a mounting inner casing fixed in the outer casing, and the mounting inner casing is composed of a symmetrical first mounting shell and a second mounting shell, and is assembled after being assembled. The inner casing is cylindrical.

Preferably, the mounting inner casing is provided with a motor, a reversing switch and a battery, the mounting inner casing is completely housed inside the outer casing, and the bearing seat is fixed on the inner casing and fixed to the outer casing. .

Preferably, the mounting inner casing is provided with a slot, and the supporting end of the pot piece is inserted into the slot.

Preferably, the outer wall of the inner casing is provided with an axially positioned inner groove, and the inner wall of the outer casing is provided An axially positioned outer groove matching the axially located inner groove, an axial positioning strip simultaneously embedding the axially positioned inner groove and the axially positioned outer groove to cause the inner casing and the outer casing to be mounted Axial fixed.

Preferably, the outer wall of the inner casing is provided with an axial rib, and the inner wall of the outer casing is provided with a groove matched with the rib to fix the inner casing and the outer casing circumferentially. ,vice versa.

Preferably, the first mounting shell is provided with a positioning boss, and the second mounting shell is provided with a positioning slot, and the positioning boss is fixedly docked with the positioning slot, and vice versa.

Preferably, the manual screwdriver further comprises a metal threaded tail cap and a conductive ring fixed to each other, and an inner wall of the tail end of the outer casing is provided with an internal thread matching the thread of the metal threaded tail cap, and the inner casing tail is installed. The end is a plastic spring, and when the metal threaded tail cap is screwed to the tail end of the outer casing, the conductive ring is inserted between the tail end of the inner casing and the tail end of the outer casing and is twisted with a metal threaded tail cap The switch forms a loop.

Preferably, a functional slot is disposed in the metal threaded tail cap, and a tail LED light is selectively inserted into the functional slot, and the tail LED light is electrically connected to the commutation switch.

Preferably, the hand-integrated screwdriver is provided with a front LED lamp, and the front LED lamp comprises a PCB board, an LED lamp and an LED light switch, and the LED light switch is disposed on the switch button and the screwdriver a button between the heads and the LED light switch protrudes from a casing wall of the outer casing, the PCB board is fixed to a outside of the boss of the bearing housing, the LED lamp is disposed on the PCB board and the LED lamp is The lamp head faces the screwdriver bit, and a conductive wire is connected between the PCB board and the LED light switch.

Or the front manual LED lamp is provided with a front LED lamp, and the front LED lamp comprises a PCB board, an LED lamp and an LED light switch, wherein the LED light switch is disposed after the reversing switch and away from the a screwdriver bit, the button of the LED light switch protrudes from a shell wall of the outer casing, the PCB board is fixed to a outside of the boss of the bearing seat, the LED lamp is disposed on the PCB board and the LED The lamp head of the lamp faces the screwdriver bit, and a conductive wire is connected between the PCB board and the LED lamp switch.

The invention also discloses a receiving seat matched with the above-mentioned hand-integrated screwdriver, comprising a cylindrical receiving seat shell and an upper cover, wherein the center of the receiving seat housing is provided with a screw extending along the axial direction thereof a plurality of screwdriver bit receiving holes uniformly distributed around the screwdriver jack, and a center shaft hole matched with the screwdriver socket; the hand An integral screwdriver can pass through the central shaft bore and be inserted into the screwdriver jack.

Preferably, the upper cover is covered or separated from the accommodating housing, and the upper cover covers the screwdriver bit receiving hole and the upper cover in a state where the upper cover and the accommodating housing are closed. The central shaft hole is coaxially opposite to the screwdriver jack. When the screwdriver bit is inserted into the screw bit receiving hole, the screwdriver bit is at least partially exposed to the screwdriver bit receiving hole.

Preferably, an electrical conductor is disposed in the hollow inner cavity of the screwdriver socket, and the screwdriver is electrically connected to the electrical conductor when the screwdriver is inserted into the screwdriver socket.

Preferably, the electrical conductor is a positive electrode elastic conductor composed of at least one spring, and at least a portion of the spring is electrically connected to a circumferential surface of the bearing housing of the hand-integrated screwdriver.

Preferably, the positive electrode elastic conductor is a positive electrode elastic conductor wound by a spring, and the projection cross section is an equilateral triangle.

Preferably, the electrical conductor is a positive electrode elastic conductor having at least one elastic piece, and at least a portion of the elastic piece is electrically connected to a circumferential surface of the bearing seat of the hand-integrated screwdriver.

Preferably, the positive electrode elastic conductor is a positive electrode elastic conductor having six elastic sheets, and the projected cross section thereof is plum-like.

Preferably, the bottom of the screwdriver bit receiving hole is provided with a magnet for sucking the screwdriver bit.

Preferably, a housing and a base fixed to each other are disposed outside the housing, and the housing space formed by the metal housing and the base is matched with the outer contour of the housing.

Preferably, the outer contour of the metal outer casing and the accommodating housing are circular in cross section.

Preferably, the outer wall of the accommodating housing is provided with a USB interface and a charging indicator lamp, and the accommodating housing is provided with a weight.

Preferably, the upper cover is a magnetic upper cover or an upper cover provided with a magnet.

The invention also discloses a charging circuit between a hand-integrated screwdriver and a matching receiving seat thereof, wherein the hand-integrated screwdriver comprises a metal housing and a metal bearing seat insulated from each other, the bearing seat is arranged An exposed portion exposed to the metal casing is disposed at an end of the outer casing, and the outer casing is provided with a conductive sheet and a battery, and one end of the conductive sheet is electrically connected to the bearing seat, and the other end is electrically connected to the positive pole of the battery. The metal casing is electrically connected to the negative electrode of the battery through a conductive ring;

The accommodating seat includes a receiving body and a PCBA disposed in the accommodating body. The center of the accommodating body is provided with a screwdriver jack for inserting the hand-integrated screwdriver. A positive electrode elastic conductor is disposed in the hollow inner cavity of the hole, and an end surface of the screw jack is provided with a negative electrode conductive piece, and a positive power supply end of the PCBA is connected to the positive electrode elastic conductor, and a negative power supply terminal and a negative electrode of the PCBA Conductive sheets are connected;

When the screwdriver is inserted into the receiving seat, the end surface of the metal casing is electrically connected to the negative electrode conductive plate, and the bearing seat is connected to the positive electrode elastic conductor and is connected to the conductive device. The external charging current passes through the positive power supply end of the PCBA, the positive electrode elastic conductor, the bearing seat, the conductive sheet, the positive electrode of the battery, the negative electrode of the battery, the metal casing, the negative electrode conductive sheet, and the negative power supply end of the PCBA to form a charging circuit.

Preferably, the electrical conductor is a positive electrode elastic conductor having at least one elastic piece, and at least part of the elastic piece is electrically connected to a circumferential surface of the bearing housing of the hand-integrated screwdriver. even.

The invention also discloses a hand-operated screwdriver, comprising a casing and a screwdriver bit disposed in front of the casing, wherein the casing is provided with a motor, and a composite mechanism is arranged between the screwdriver bit and the motor. The composite mechanism has a hand-operated screwdriver having a manual mode and an electric mode that are switched to each other, the housing including a cylindrical outer casing and a mounting inner casing fixed in the outer casing, the mounting inner casing being symmetric The first mounting shell and the second mounting shell are assembled to each other, and the assembled inner casing has a cylindrical shape, and the mounting inner casing is provided with a motor, a reversing switch and a battery, and the mounting inner casing is completely accommodated in the Inside the casing,

Preferably, the composite mechanism comprises:

a bearing seat fixed to the mounting inner casing and fixed to the outer casing, and a boss for axially fixing the output shaft is disposed therein

In the electric mode, the motor drives the support frame to rotate, and the pin drives the output shaft and the screwdriver bit to rotate under the driving action of the support frame 8; in the manual mode, the screw In the state of the bit rotation, the pin is engaged between the straight line segment of the output shaft and the bearing housing, and the output shaft, the bearing housing, the pin and the housing are relatively fixed.

Preferably, the hand-integrated screwdriver is provided with a front LED lamp, the front LED lamp includes an LED lamp and an LED light switch, and the LED light switch is disposed between the switch button and the screwdriver bit Or the LED light switch is disposed after the switch and away from the screwdriver bit, the button of the LED light switch protrudes from the shell wall of the outer casing, and the LED light and the LED light switch pass through the flexible circuit The board is turned on.

The beneficial effects of the present invention are mainly embodied in:

1. The screwdriver adopts a composite mechanism to realize manual automatic integration. When the screwdriver does not have a supplementary power supply, it can still be used normally by manual; the composite mechanism replaces the traditional one-way valve, so that the volume of the screwdriver is reduced and the outer diameter is The reduction reduces the accessibility of the screwdriver in a small working space, and is convenient to carry and store;

2. The screwdriver has a front LED lamp, which can play the role of illumination, so that the operator can clearly observe the position relationship between the bit and the screw. In the dim environment, the screwdriver of the invention can also be used; the tail cap is provided with functions. Slot and tail LED lights, function slots can be used to plug in other functional modules, such as MP3 modules; the tail LED lights can play the role of work instructions, the above structure is comfortable to operate, easy to use;

3. A mounting inner casing is added in the traditional screwdriver package. The inner casing is assembled by the first inner casing and the second inner casing. The inner casing is connected to the inner casing and is fixed by the outer casing without screws. Fastening or seamless connection; the inner casing can be detachably inserted into the outer casing, which is convenient and quick to assemble, easy to disassemble and repair replacement parts, and does not affect secondary assembly;

4. The switch assembly with the pot piece is adopted, and the pot piece will have a slight prompt sound when the deformation is reset, and the prompt sound can feedback the working status information of the screwdriver, thereby optimizing the user experience. Improved comfort and enhanced pressure experience;

5. The receiving seat with the upper cover is adopted, and the replacement batch head of the screwdriver can be accommodated for the screw batch to be inserted, and the upper cover prevents the batch head in the receiving seat from being scattered, the overall structure is simple, the volume is small, and the carrying is convenient;

6. The charging seat and the screwdriver form a charging circuit for charging the screwdriver, which is convenient and quick; the positive elastic conductor adopts a specific structure, which makes the contact between the screwdriver and the screwdriver more reliable, and reduces the precision requirement for the conductive member. To make the insertion and removal of the screwdriver more smooth.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view showing the structure of a first embodiment of the hand-held screwdriver of the present invention.

Figure 2 is a schematic exploded view of a first embodiment of the hand-held screwdriver of the present invention.

Figure 3 is a cross-sectional view of the N-N of Figure 1 showing the cross-sectional structure of the composite mechanism.

Figure 4 is an enlarged schematic view of a portion A of Figure 1.

Figure 5 is an enlarged schematic view of a portion B of Figure 2.

Figure 6 is a schematic view showing the structure of a second embodiment of the hand-held screwdriver of the present invention.

Figure 7 is a schematic view showing the structure of a third embodiment of the hand-held screwdriver of the present invention.

Figure 8 is a schematic exploded view of a third embodiment of the hand-held screwdriver of the present invention.

Fig. 9 is a schematic view showing the exploded structure of the first embodiment of the holder for the hand-held screwdriver of the present invention.

Fig. 10 is a cross-sectional structural view showing the first embodiment of the holder for the hand-held screwdriver of the present invention.

Fig. 11 is a cross-sectional structural view showing the magnet of the screwdriver bit receiving hole of the first embodiment of the holder for the hand-held screwdriver of the present invention.

Figure 12 is another exploded view of the first embodiment of the holder for the hand-held screwdriver of the present invention.

Figure 13 is an enlarged schematic view of the positive electrode elastic conductor of Figure 12;

Figure 14 is a schematic exploded view of a second embodiment of the holder of the hand-held screwdriver of the present invention.

Fig. 15 is an enlarged schematic view showing the positive electrode elastic conductor of Fig. 14.

Figure 16 is a schematic view of the frame of the charging circuit between the hand-held screwdriver and the holder of the present invention.

detailed description

The present invention provides a hand-operated screwdriver, as shown in the first embodiment shown in FIGS. 1 to 5, comprising a housing and a screwdriver bit 1 disposed in front of the housing, the housing being provided There is a motor 3, which is a geared motor. A composite mechanism 4 is disposed between the screwdriver bit 1 and the motor 3, and the composite mechanism enables the manual self-integrated screwdriver to have a manual mode and an electric mode that are switched to each other. Specifically, the composite mechanism 4 includes an output shaft 5, a support frame 6, a bearing housing 7, and a pin 8.

The output shaft 5 is disposed between the screwdriver bit 1 and the motor 3, and the output shaft 5 is provided There is a front end 51 having a hexagon socket for inserting and circumferentially fixing the screwdriver bit 1, and a rear end 52 for inserting a motor shaft of the motor 3, a front end 51 and a rear end A convex ring 53 is provided between 52. The outer contour of the cross section of the rear end 52 has a circular arc segment 521 and a straight line segment 522.

The support frame 6 is disposed on the motor shaft of the motor 3 and can be rotated simultaneously in the circumferential direction. In the electric mode, the motor 3 drives the support frame 6 to rotate, thereby driving the output shaft 5 and the screwdriver The head 1 turns. As shown in FIG. 3 and FIG. 5, the support frame 6 includes a chassis 62 through which a linkage shaft hole 621 for mating with a motor shaft of the motor 3 is inserted, the chassis At least two extension arms 61 are extended on the 62, and the extension arms 61 are inserted between the output shaft 5 and the bearing housing 7 in the radial direction, and the pins 8 are circumferentially located between the adjacent extension arms 61. Preferably, the extension arms 61 are three, and the pins 8 are three. Of course, it is also possible to provide the extension arm 61 as two, and the pin 8 is located between the two extension arms 61; or the plurality of extension arms 61 cooperate with the plurality of pins 8, which are also allowed in the present invention. .

The bearing housing 7 is fixedly connected to the housing, and has a boss 71 for axially fixing the output shaft 5 therein. When the output shaft 5 is inserted into the bearing housing 7, the convex ring 53 abuts against the boss 71 to axially fix the output shaft 5. The outer diameter of the bottom frame 62 of the support frame 6 is smaller than the maximum inner diameter of the bearing housing 7, so that the support frame 6 is completely received in the bearing housing 7, and the pin 8 is located in the axial direction. The collar 53 is between the chassis 62 and the chassis 62.

The pin 8 is disposed between the output shaft 5 and the bearing housing 7 and is attached to the straight line segment 522. The maximum distance between the straight line segment 522 and the inner wall of the bearing housing 7 is The diameter of the pin 8 is comparable, and the distance between the arc segment 521 and the bearing block 7 is smaller than the diameter of the pin 8.

Referring specifically to Figure 2, the housing includes a cylindrical outer casing 2 and a mounting inner casing secured within the outer casing 2, the mounting inner casing being joined to each other by a symmetrical first mounting shell 91 and a second mounting shell 92 The assembled inner casing has a cylindrical shape.

The mounting inner casing is provided with a motor 3, a reversing switch 21 and a battery 25, the mounting inner casing is completely housed inside the outer casing 2, and the bearing housing 7 is fixed on the mounting inner casing and further The outer casing 2 is fixed. The outer wall of the inner casing is provided with an axially positioned inner groove 101. The inner wall of the outer casing is provided with an axially positioned outer groove 102 matching the axially positioned inner groove 101, and an axial positioning strip 100 is simultaneously embedded. The axially positioned inner groove 101 and the axially positioned outer groove 102 are configured to axially secure the mounting inner casing to the outer casing 2. The axial positioning strip 100 is made of nylon or steel wire, or other hard metal or non-metal.

The outer wall of the inner casing is provided with an axial rib 200, and the inner wall of the outer casing 2 is provided with a groove 201 matched with the rib 200, so that the inner casing and the outer casing are 2 weeks apart. Fixed to the opposite and vice versa. The embodiment of the present invention includes a plurality of ribs 200, so that the inner wall of the outer casing 2 is also provided with a plurality of grooves 201.

The first mounting shell 91 is provided with a positioning boss 300, and the second mounting shell 92 is provided with a positioning slot 301, and the positioning boss 300 is fixedly docked with the positioning slot 301, and vice versa. The reversing switch 21 is provided with a positioning hole 211. The first mounting shell 91 or the second mounting shell 92 is provided with a positioning post 400 that is connected to the positioning hole 211, so that the reversing switch 21 is opposite. Fixed in the inner casing of the installation.

Since the motor 3 is provided with a convex body, the installation structure for positioning the motor 3 in the inner casing 9 is such that the first mounting shell 91 and the second mounting shell 92 are respectively provided with openings 500 corresponding to the fuselage, the motor 3 is fixedly engaged with the opening 500 of the first mounting shell 91 and the second mounting shell 92.

The invention adopts the structural form that the inner casing is detachably inserted into the outer casing, so that the assembly is convenient and quick, the disassembly and repair of the replacement parts are convenient, and the secondary assembly is not affected; more importantly, the integrity of the product is not affected, and the whole product is There are no stitching lines in the shape. The structure and fixing manner of the first mounting shell 91 and the second mounting shell 92 in the present invention are merely examples, and other fixing structures capable of achieving this function can be used as a modified embodiment of the present invention, for example, without a boss and a plug. Ultrasonic welding of the groove, etc.

A reversing switch 21 for controlling the rotation of the motor is disposed in the housing. The housing wall of the housing is provided with a switch button 22, and the switch button 22 controls the connection of the reversing switch 21, and the switch button 22 is in the middle. A fulcrum, a rocker switch button that is tilted up and down at both ends, and a reset elastic piece is disposed between the rocker switch button and the changeover switch 21. The rocker switch button form makes the screwdriver operation of the present invention more convenient, and is convenient for controlling the forward rotation and the reverse rotation of the motor.

As shown in FIG. 7 and FIG. 8 , the reset elastic piece is a pot piece 40 disposed between the switch button 22 and the change-over switch 21 for bridging conduction, and the pot piece 40 is composed of The central convex metal piece is composed of four support ends 41 uniformly distributed around the periphery of the central concave metal piece, and the support end is inserted into the slot 42 of the casing. The housing 1 has a support post 43 corresponding to the switch button position, and the middle pivot of the switch button 22 is pivotally mounted on the support post 43 to form a rocker switch button, and the bottom end of the switch button 22 has Two reversing contacts 221, the reversing switch 21 has two contact ends 222 opposite to the reversing contacts 221, and the pot piece 40 is disposed between the contacts and the contact ends. When the switch button 22 is pivoted about the support post 43, the two reversing contacts 221 of the switch button 22 forcibly deform the central convex metal piece of the dome 40 and correspondingly touch Terminal 222 is conducting. The mounting inner casing is provided with a slot 42 into which the supporting end 41 of the dome 40 is inserted. When in use, due to the shape characteristic of the pot piece 40, when the switch button 22 is pressed, the pot piece 40 will sound, reminding the operator that the screwdriver has been powered on, and the screwdriver bit is already rotating. .

The hand-operated screwdriver of the present invention further comprises a metal threaded tail cap 23 and a conductive ring 24 fixed to each other, and an inner wall of the tail end of the outer casing is provided with an internal thread matching the thread of the metal threaded tail cap, the inner casing The tail end is a plastic spring 12, and when the metal threaded tail cap is screwed to the tail end of the outer casing, the conductive ring 24 is inserted between the tail end of the mounting inner casing and the tail end of the casing and with a metal threaded tail cap The commutation switch 21 forms a loop. The conductive loop is reliable and simple in structure, and does not be as in the prior art: the contact with the battery is poor due to the spring elasticity of the negative electrode of the battery disappearing or rusting. Because in the preferred embodiment, if the usage time is long, the pressure is After the elasticity of both ends of the battery becomes weak, it is only necessary to further tighten the metal threaded tail cap. A function slot 231 is disposed in the metal threaded tail cap 23, and a tail LED lamp is selectively inserted into the function slot 231, and the tail LED lamp is electrically connected to the changeover switch 21. The tail LED light can serve as an indicator to alert the operator that the screwdriver is already working. Of course, other functional components such as an MP3 player can be plugged into the function slot 231.

In the first embodiment, the hand-held integrated screwdriver is provided with a front LED lamp, and the front LED lamp comprises a PCB board 81, an LED lamp 82 and an LED light switch 83, and the LED light switch 83 is disposed at the switch. A button 22 is interposed between the screwdriver bit 1 and a button of the LED light switch 83 protrudes from a casing wall of the casing 2, and the PCB board 81 is fixed to the outside of the boss 71 of the bearing housing 7, The LED lamp 82 is disposed on the PCB board 81 and the lamp head of the LED lamp 82 faces the screwdriver bit 1, and a conductive wire is connected between the PCB board 81 and the LED lamp switch 83. The second embodiment disclosed in FIG. 6 is different from the first embodiment in that the LED lamp switch 83 is disposed behind the reversing switch 21 and away from the screwdriver bit 1. Similarly, the LED light switch 83 of the third embodiment in FIG. 8 is also disposed after the changeover switch 21. The setting of the front LED light is very necessary, so that the operator can see the working area when using the screwdriver in poor lighting conditions. In the present invention, the PCB board 81 and the conductive wires connected thereto may be replaced by a flexible wiring board.

When the hand-operated screwdriver of the present invention is in the electric mode, the motor 3 drives the support frame 6 to rotate, and the pin 8 drives the output shaft 5 and the screwdriver bit 1 under the driving action of the support frame 6. Rotating; in the manual mode, in the state of rotation of the screwdriver bit 1, the pin 8 is engaged between the straight section 522 of the output shaft 5 and the bearing housing 7, the output shaft 5, the bearing housing 7 The pin 8 and the housing are relatively fixed.

Specifically, in the electric mode state, the reversing switch 21 adjusts the forward and reverse rotation of the motor 3 to select to tighten or remove the screw, the reversing switch 21 drives the motor 3 to work, and the motor shaft of the motor drives the support frame 6 to rotate, and the support frame 6 The extension arm 61 drives the pin 8, and the pin 8 is engaged with the area of the straight section 522 of the output shaft 5 near the arc segment and drives the output shaft 5 to rotate. Specifically, the extension arm 61 is opposite to the pin 8. With a circumferential force, since the diameter of the pin 8 is larger than the distance between the arc segment and the bearing housing, the force acts on the output shaft 5 through the pin, and the output shaft 5 finally drives the screwdriver bit to rotate.

In the manual mode state, when the motor 3 is not working or under the condition of fine operation, the screw is directly tightened or removed. When the screwdriver bit 1 rotates the screw, the screwdriver bit has a force on the output shaft 5, and the output shaft 5 A small amount of rotational displacement is generated such that the pin 8 is snapped into the angle formed by the straight section of the output shaft 5 at the bearing housing. Since the distance between the circular arc segment 521 and the bearing housing 7 is smaller than the diameter of the pin 8, the output shaft 5 generates a force on the pin when it rotates, and the linear segment 522 acts on the pin, and the pin receives the force toward the bearing housing 7, At this time, under the force of the output shaft, the output shaft, the pin and the bearing seat are relatively fixed to each other. Since the bearing housing 7 and the outer casing 2 are fixed, the output shaft, the pin, the bearing housing, the outer casing and the screwdriver bit are relatively fixed. At this time, the screwdriver is the same as the normal screwdriver.

As shown in FIG. 9 to FIG. 11 , the present invention also discloses a receiving seat matched with a manual screwdriver, comprising a cylindrical receiving seat housing 311 and an upper cover 320, and the receiving seat housing 311 The center is provided with a screwdriver jack 351 extending along the axial direction thereof and a plurality of screwdriver bit receiving holes 352 surrounding the screw jack 351. The center of the upper cover 320 is provided with the screw The batch jacks are matched with the center shaft hole 321; the hand-integrated screwdriver can pass through the center shaft hole 321 and be inserted into the screwdriver jack 351. The upper cover 320 is covered or separated from the accommodating housing 311. The upper cover 320 covers the screwdriver head receiving hole 352 in a state where the upper cover 320 and the accommodating housing 311 are closed. And the central shaft hole 321 of the upper cover is coaxially opposite to the screwdriver jack 351. When the screwdriver bit is inserted into the screwdriver bit receiving hole 352, the screwdriver bit is at least partially exposed to the screwdriver bit. Containing holes. An electric conductor 308 is disposed in the hollow inner cavity of the screwdriver jack 351. When the screwdriver is inserted into the screwdriver jack 351, the screwdriver is electrically connected to the electric conductor 308.

Specifically, as shown in FIG. 12 and FIG. 13 , the electrical conductor 308 is composed of at least one spring group. The positive electrode elastic conductor is electrically connected to the circumferential surface of the bearing block 7 of the hand-integrated screwdriver. Further, the positive electrode elastic conductor is a positive electrode elastic conductor wound by a spring, and the projection cross section is an equilateral triangle. Of course, the positive electrode elastic conductor may be wound by a plurality of springs, or may be wound into any shape, and only when the hand-integrated screwdriver is inserted into the holder, at least part of the spring The circumferential surface of the bearing housing 7 of the manual screwdriver can be electrically connected.

In the second embodiment shown in FIG. 14 and FIG. 15, the conductor 308 is a positive electrode elastic conductor having at least one elastic piece 318, and at least a portion of the elastic piece is coupled to the bearing housing of the hand-integrated screwdriver. The circumferential surface of 7 is electrically connected. Further, the positive electrode elastic conductor is a positive electrode elastic conductor having six elastic pieces 318, and the projected cross section thereof is plum-shaped. After the manual screwdriver is inserted into the receiving seat, the elastic piece 318 is electrically connected to the circumferential surface of the bearing housing 7.

The positive electrode elastic conductor disclosed in FIGS. 12 to 15 is only a preferred one, and a similar elastic conductive structure may be substituted as long as the elastic structure is well connected to the circumferential surface of the bearing housing 7.

In the present invention, the bottom of the screwdriver bit receiving hole 352 is provided with a magnet 314 for sucking the screwdriver bit. The magnet 314 adsorbs the screwdriver bit to play the role of adsorption positioning, which increases the stability of the screwdriver bit after being stored.

The metal housing 312 and the base 313 are fixed to each other outside the receiving housing 311. The receiving space formed by the metal housing 312 and the base 313 is matched with the outer contour of the receiving housing 311. The outer contours of the metal casing 312 and the accommodating housing 311 are both circular in cross section. Of course, other shapes are also possible, and are not limited in the present invention. The housing 311, the metal housing 312 and the base 313 constitute a main body 305 of the housing.

A USB interface and a charging indicator lamp are disposed on an outer wall of the accommodating housing 311, and a weight 310 is disposed in the accommodating housing 311. The upper cover 320 is a magnetic upper cover or a magnet The cover, in this way, the upper cover 320 can be self-adhered to the metal casing 312 to prevent the screwdriver bit placed therein from falling out.

The invention further discloses a charging circuit between the hand-integrated screwdriver and the corresponding receiving seat. As shown in FIG. 16, the hand-integrated screwdriver comprises a metal casing 2 and a metal bearing seat 7 insulated from each other. The bearing housing 7 is disposed at an end of the outer casing 2 and has an exposed portion 72 exposed to the metal outer casing. The outer casing 2 is provided with a conductive piece 26 and a battery 25, and one end of the conductive piece 26 is electrically connected to the bearing housing 7. The other end is connected to the positive electrode of the battery 25, and the metal casing 2 is electrically connected to the negative electrode of the battery 25 through the conductive ring 24. The receiving base includes a receiving body 305 and a PCBA 306 disposed in the receiving body. The center of the receiving body 305 is provided with a screwdriver jack 351 for inserting the hand-integrated screwdriver. A positive electrode elastic conductor 308 is disposed in the hollow cavity of the screwdriver jack 351, and an end surface of the screwdriver jack 351 is provided with a negative electrode conductive piece 307, and a positive electrode power supply end 361 of the PCBA is connected to the positive electrode elastic conductor 308. The negative power supply end 362 of the PCBA is connected to the negative electrode conductive sheet 307;

When the screwdriver is inserted into the receiving seat, the end surface of the metal casing 2 is electrically connected to the negative electrode conductive piece 307, and the bearing seat 7 is connected to the positive electrode elastic conductor 308 and is coupled thereto. Connected, the external charging current passes through the positive power supply terminal 361 of the PCBA, the positive electrode elastic conductor 308, the bearing block 7, the conductive sheet 26, the positive electrode of the battery 25, the negative electrode of the battery, the metal casing 2, the negative electrode conductive sheet 307, and the negative electrode of the PCBA. The power supply terminal 362 forms a charging circuit.

The screwdriver of the invention also has its own working circuit, and the working circuit and the charging circuit can partially cross. Specifically, a conductive circuit board 26 and a positive electrode of the battery 25 are further provided with a switch circuit board for controlling the working state of the screwdriver, and the conductive sheet 26 is further One end is provided, one end of the branch end is connected to the positive pole of the battery through the switch circuit board, and the other end of the support end is connected to the negative pole of the battery through the working circuit of the screwdriver, and the support end of the conductive sheet is put into the working circuit of the screwdriver.

The present invention has various embodiments, and all technical solutions formed by equivalent transformation or equivalent transformation are within the scope of the present invention.

Claims

A hand-held screwdriver, comprising a casing and a screwdriver bit (1) disposed in front of the casing, wherein the casing is provided with a motor (3), characterized in that: the screwdriver bit (1) A composite mechanism (4) is provided between the motor and the motor (3). The composite mechanism has a hand-operated screwdriver with a manual mode and an electric mode that are switched to each other. The composite mechanism (4) includes:

An output shaft (5) disposed between the screwdriver bit (1) and the motor (3), the output shaft (5) having a front end (51) and a rear end (52) The front end (51) has a hexagon socket for inserting and circumferentially fixing the screwdriver bit (1), the rear end (52) for inserting a motor shaft of the motor (3), the rear The outer contour of the cross section of the end has a circular arc segment (521) and a straight segment (522),

a support frame (6) is disposed on the motor shaft of the motor (3) and can be rotated simultaneously in the circumferential direction. In the electric mode, the motor (3) drives the support frame (6) to rotate, thereby driving The output shaft (5) and the screwdriver bit (1) rotate,

a bearing seat (7) fixedly connected to the housing, and having a boss (71) for axially fixing the output shaft (5) therein,

At least one pin (8) disposed between the output shaft (5) and the bearing housing (7) and attached to the straight line segment (522), the straight line segment The maximum distance between (522) and the inner wall of the bearing housing (7) is comparable to the diameter of the pin (8), and the distance between the circular arc segment (521) and the bearing housing (7) is smaller than the pin ( 8) the diameter,

In the electric mode, the motor (3) drives the support frame (6) to rotate, and the pin (8) drives the output shaft (5) and the screwdriver bit under the driving action of the support frame (6). (1) Rotation; in the manual mode, the pin (8) is engaged with the straight section (522) and the bearing housing (7) of the output shaft (5) in a state in which the screwdriver bit (1) is rotated. Between the output shaft (5), the bearing housing (7), the pin (8) and the housing are relatively fixed.
A hand-operated screwdriver according to claim 1, wherein said support The frame (6) includes a chassis (62), and the chassis (62) is provided with a linkage shaft hole (621) for mating with the motor shaft of the motor (3), the chassis (62) Extending at least two extension arms (61) extending radially between the output shaft (5) and the bearing housing (7), the pin (8) in the circumferential direction Located between adjacent extension arms (61).
The hand-operated screwdriver according to claim 2, characterized in that the outer circumference of the output shaft (5) is provided with a convex ring (53), and when the output shaft (5) is inserted into the bearing housing (7) After the inner ring, the convex ring (53) abuts against the boss (71) to axially fix the output shaft (5).
The hand-operated screwdriver according to claim 3, wherein the outer diameter of the chassis (62) of the support frame (6) is smaller than the maximum inner diameter of the bearing housing (7), so that the support The frame (6) is completely housed in the bearing housing (7), and the pin (8) is located between the convex ring (53) and the chassis (62) in the axial direction.
The hand-operated screwdriver according to claim 1, wherein the housing is provided with a reversing switch (21) for controlling the rotation of the motor, and the housing wall of the housing is provided with a switch button (22). The switch button (22) controls the connection of the changeover switch (21), the switch button (22) is a middle pivot point, a rocker switch button that is tilted up and down at both ends, and the rocker switch button and the commutation A reset spring is provided between the switches (21).
The hand-operated screwdriver according to claim 5, wherein the reset spring piece is a pot piece disposed between the switch button (22) and the change-over switch (21) for bridging conduction ( 40) The pot piece (40) is composed of a central convex metal piece and four supporting ends (41) uniformly distributed around the periphery of the central concave metal piece, and the supporting end is inserted into the groove of the casing Inside the gap (42).
The hand-operated screwdriver according to claim 6, wherein the outer casing (1) has a support column (43) corresponding to the position of the switch button, and the middle portion of the switch button (22) is pivotally attached. Forming a rocker switch button on the support column (43), the switch button (22) has two commutation contacts (221) at both ends of the bottom, and the switch (21) has the same The opposite contacts (222) are matched to the contact (221), and the cooker piece (40) is disposed between the contact and the contact end, and the switch button (22) is wound around the support column (43) In the pivoting state, the two reversing contacts (221) of the switch button (22) forcibly deform the central convex metal piece of the dome (40) and its corresponding contact end (222) ) Phase conduction.
A hand-operated screwdriver according to any one of claims 1 to 7, wherein the housing comprises a cylindrical outer casing (2) and a mounting inner casing fixed in the outer casing (2). The mounting inner casing is composed of a symmetrical first mounting shell (91) and a second mounting shell (92), and the assembled inner casing has a cylindrical shape.
The hand-operated screwdriver according to claim 8, wherein the mounting inner casing is provided with a motor (3), a reversing switch (21) and a battery (25), and the mounting inner casing is completely housed in Inside the outer casing (2), the bearing housing (7) is fixed to the mounting inner casing and fixed to the outer casing (2).
The hand-operated screwdriver according to claim 8, wherein the mounting inner casing is provided with a slot (42), and the supporting end (41) of the pan (40) is inserted into the slot. (42) inside.
The hand-operated screwdriver according to claim 8, wherein the outer wall of the inner casing is provided with an axially positioned inner groove (101), and the inner wall of the outer casing is provided with the axially positioned inner groove. (101) a matching axially positioned outer groove (102), an axial positioning strip (100) simultaneously embedding the axially located inner groove (101) and the axially positioned outer groove (102) for the installation The inner casing is axially fixed to the outer casing (2).
The hand-operated screwdriver according to claim 8, wherein the outer wall of the inner casing is provided with an axial rib (200), and the inner wall of the outer casing (2) is provided with the rib (200) mating grooves (201) to circumferentially fix the mounting inner casing and the outer casing (2), and vice versa.
A hand-operated screwdriver according to claim 8, wherein said first The mounting shell (91) is provided with a positioning boss (300), and the second mounting shell (92) is provided with a positioning slot (301), and the positioning boss (300) is fixedly docked with the positioning slot (301). vice versa.
A hand-operated screwdriver according to claim 8, further comprising a metal threaded tail cap (23) and a conductive ring (24) fixed to each other, the inner wall of the outer end of the outer casing being provided with the metal thread tail The threaded end of the cap matches the internal thread, the mounting inner end is a plastic spring (12), and the conductive ring (24) is inserted into the housing when the metal threaded end cap is screwed to the end of the housing The loop between the end of the inner casing and the tail end of the casing and the metal threaded tail cap and the reversing switch (21) are formed.
The hand-operated screwdriver according to claim 14, wherein the metal threaded tail cap (23) is provided with a function slot (231), and the function slot (231) is selectively insertable. A tail LED lamp is provided, and the tail LED lamp is electrically connected to the reversing switch (21).
The hand-operated integrated screwdriver according to any one of claims 1 to 7, wherein the hand-integrated screwdriver is provided with a front LED lamp, and the front LED lamp comprises an LED lamp (82) and an LED lamp. a switch (83), the LED light switch (83) is disposed between the switch button (22) and the screwdriver bit (1) and a button of the LED light switch (83) protrudes from the outer casing ( a casing wall of 2), or the LED light switch (83) is disposed behind the reversing switch (21) and away from the screwdriver bit (1), the button of the LED light switch (83) protrudes from The shell wall of the outer casing (2).
A holder for supporting a hand-held screwdriver according to claim 1, comprising: a cylindrical holder housing (311) and an upper cover (320), and the holder housing (311) The center of the center is provided with a screwdriver jack (351) extending along the axial direction thereof and a plurality of screwdriver bit receiving holes (352) surrounding the screw jack (351), the upper cover ( The center of 320) is provided with a central shaft hole (321) matching the socket of the screwdriver; the manual screwdriver can pass through the central shaft hole (321) and be inserted into the screwdriver jack (351).
The accommodating seat according to claim 17, wherein the upper cover (320) is covered or separated from the accommodating housing (311), and the upper cover (320) and the accommodating housing (311) The cover (320) covers the screwdriver bit receiving hole (352), and the central shaft hole (321) of the upper cover is coaxially opposed to the screwdriver jack (351) when the cover is closed. After the bit is inserted into the screwdriver bit receiving hole (352), the screwdriver bit is at least partially exposed to the screw bit receiving hole.
The receptacle according to claim 17, wherein a conductive body (308) is disposed in the hollow inner cavity of the screwdriver jack (351), and the screwdriver is inserted into the screwdriver jack (351). After the inside, the screwdriver is electrically connected to the electrical conductor (308).
The receptacle according to claim 19, wherein said electrical conductor (308) is a positive electrode elastic conductor composed of at least one spring, at least part of said spring and said hand-integrated screwdriver The circumferential surface of the seat (7) is electrically connected.
The receptacle according to claim 20, wherein the positive electrode elastic conductor is a positive electrode elastic conductor wound by a spring, and the projection cross section is an equilateral triangle.
The receptacle according to claim 19, wherein said electrical conductor (308) is a positive electrode elastic conductor having at least one elastic piece (318), at least part of said elastic piece and said hand-in-one screw The circumferential surface of the batch bearing housing (7) is electrically connected.
The receptacle according to claim 22, wherein the positive electrode elastic conductor is a positive electrode elastic conductor having six elastic pieces (318), and the projected cross section thereof is plum-shaped.
The receptacle according to claim 17, wherein the bottom of the screwdriver bit receiving hole (352) is provided with a magnet (314) for sucking the screwdriver bit.
The accommodating seat according to claim 17, wherein the accommodating housing (311) is further provided with a metal housing (312) and a base (313) fixed to each other, the metal housing (312) and the base. (313) forming the accommodating space and the outside of the accommodating housing (311) The contours match.
The receptacle according to claim 17, wherein the outer wall of the accommodating housing (311) is provided with a USB interface and a charging indicator lamp, and the accommodating housing (311) is provided with a weight. (310).
The receptacle according to claim 17, wherein the upper cover (320) is a magnetic upper cover or an upper cover provided with a magnet.
A charging circuit between a hand-integrated screwdriver and a corresponding receiving seat, characterized in that:

The hand-operated screwdriver comprises a metal housing (2) insulated from each other and a metal bearing seat (7), the bearing housing (7) being disposed at an end of the housing (2) and having an exposure exposed to the metal housing a portion (72), wherein the outer casing (2) is provided with a conductive piece (26) and a battery (25), one end of the conductive piece (26) is electrically connected to the bearing seat (7), and the other end is connected with the battery (25). The positive electrode is electrically connected, and the metal casing (2) is electrically connected to the negative electrode of the battery (25) through the conductive ring (24);

The receiving base includes a receiving body (305) and a PCBA (306) disposed in the receiving body. The center of the receiving body (305) is provided with a screw for inserting the hand-integrated screwdriver. a plurality of positive electrode elastic conductors (308) are disposed in the hollow cavity of the screwdriver jack (351), and a negative electrode conductive piece (307) is disposed on an end surface of the screwdriver socket (351). The positive power supply end (361) of the PCBA is connected to the positive electrode elastic conductor (308), and the negative power supply end (362) of the PCBA is connected to the negative electrode conductive piece (307);

When the screwdriver is inserted into the receiving seat, the end surface of the metal casing (2) is electrically connected to the negative electrode conductive piece (307), and the bearing seat (7) is connected to the positive electrode elastic The electrical conductor (308) is electrically connected to the conductive body (308), and the external charging current passes through the positive power supply terminal (361) of the PCBA, the positive electrode elastic conductor (308), the bearing housing (7), the conductive sheet (26), and the battery (25). Positive electrode, battery negative electrode, metal case (2), negative electrode conductive piece (307), PCBA negative power supply terminal (362) Form a charging circuit.
The charging circuit according to claim 28, wherein said electric conductor (308) is a positive electrode elastic conductor composed of at least one spring, at least part of said spring and said hand-integrated screwdriver The circumferential surface of the seat (7) is electrically connected.
The charging circuit according to claim 29, wherein said positive electrode elastic conductor is a positive electrode elastic conductor wound by a spring, and the projection cross section is an equilateral triangle.
The charging circuit according to claim 28, wherein said electrical conductor (308) is a positive electrode elastic conductor having at least one elastic piece (318), at least part of said elastic piece and said hand-in-one screw The circumferential surface of the batch bearing housing (7) is electrically connected.
The charging circuit according to claim 31, wherein said positive electrode elastic conductor is a positive electrode elastic conductor having six elastic sheets (318), and the projected cross section thereof is plum-shaped.
A hand-held screwdriver, comprising a casing and a screwdriver bit (1) disposed in front of the casing, wherein the casing is provided with a motor (3), characterized in that: the screwdriver bit (1) A composite mechanism (4) is provided between the motor and the motor (3), the composite mechanism has a hand-operated screwdriver with a manual mode and an electric mode that are switched to each other, the housing comprising a cylindrical outer casing (2) and fixed a mounting inner casing in the outer casing (2), the mounting inner casing is composed of a symmetrical first mounting shell (91) and a second mounting shell (92), and the assembled inner shell is cylindrical The mounting inner casing is provided with a motor (3), a reversing switch (21) and a battery (25), and the mounting inner casing is completely housed inside the outer casing (2).
A hand-operated screwdriver according to claim 33, wherein:

The composite mechanism (4) includes

An output shaft (5) disposed between the screwdriver bit (1) and the motor (3), the output shaft (5) having a front end (51) and a rear end (52) ), the front end (51) has There is a hexagon socket for inserting and circumferentially fixing the screwdriver bit (1), the rear end (52) is inserted into a motor shaft of the motor (3), and the outer contour of the cross section of the rear end has a circle Arc segment (521) and straight segment (522),

a support frame (6) is disposed on the motor shaft of the motor (3) and can be rotated simultaneously in the circumferential direction. In the electric mode, the motor (3) drives the support frame (6) to rotate, thereby driving The output shaft (5) and the screwdriver bit (1) rotate,

a bearing seat (7) fixed to the mounting inner casing and fixed to the outer casing (2), and a boss (71) for axially fixing the output shaft (5) is disposed therein.

At least one pin (8) disposed between the output shaft (5) and the bearing housing (7) and attached to the straight line segment (522), the straight line segment The maximum distance between (522) and the inner wall of the bearing housing (7) is comparable to the diameter of the pin (8), and the distance between the circular arc segment (521) and the bearing housing (7) is smaller than the pin ( 8) the diameter,

In the electric mode, the motor (3) drives the support frame (6) to rotate, and the pin (8) drives the output shaft (5) and the screwdriver bit under the driving action of the support frame (6). (1) Rotation; in the manual mode, the pin (8) is engaged with the straight section (522) and the bearing housing (7) of the output shaft (5) in a state in which the screwdriver bit (1) is rotated. Between the output shaft (5), the bearing housing (7), the pin (8) and the housing are relatively fixed.
A hand-operated screwdriver according to claim 34, wherein said support frame (6) comprises a chassis (62), said chassis (62) being open therethrough for communication with said motor (3) a motor shaft that is coupled to the linkage shaft hole (621), the bottom frame (62) extends at least two extension arms (61), and the extension arm (61) is inserted into the output shaft (5) Between the bearing housing (7), the pin (8) is circumferentially located between adjacent extension arms (61).
The hand-operated screwdriver according to claim 35, characterized in that the outer circumference of the output shaft (5) is provided with a convex ring (53), and when the output shaft (5) is inserted into the bearing housing (7) After the inner ring, the convex ring (53) abuts against the boss (71) to axially the output shaft (5) fixed.
A hand-operated screwdriver according to claim 36, wherein the outer diameter of the chassis (62) of the support frame (6) is smaller than the maximum inner diameter of the bearing housing (7), so that the support The frame (6) is completely housed in the bearing housing (7), and the pin (8) is located between the convex ring (53) and the chassis (62) in the axial direction.
The hand-operated screwdriver according to claim 33 or 34, wherein the housing is provided with a reversing switch (21) for controlling the rotation of the motor, and the housing wall of the housing is provided with a switch button (22). The switch button (22) controls the connection of the changeover switch (21), the switch button (22) is a middle pivot point, a rocker switch button that is tilted up and down at both ends, and the rocker switch button and A reset spring is provided between the change-over switches (21).
The hand-operated screwdriver according to claim 38, wherein the reset spring piece is a pot piece disposed between the switch button (22) and the change-over switch (21) for bridging conduction ( 40) The pot piece (40) is composed of a central convex metal piece and four supporting ends (41) uniformly distributed around the periphery of the central concave metal piece, and the supporting end is inserted into the groove of the casing Inside the gap (42).
The hand-practical screwdriver according to claim 39, wherein the mounting inner casing is provided with a slot (42), and the supporting end (41) of the cup piece (40) is inserted into the slot (42) inside.
The hand-operated screwdriver according to claim 38, wherein the hand-held screwdriver is provided with a front LED lamp, and the front LED lamp comprises an LED lamp (82) and an LED light switch (83). The LED light switch (83) is disposed between the switch button (22) and the screwdriver bit (1), or the LED light switch (83) is disposed after the switch (21) And away from the screwdriver bit (1), the button of the LED light switch (83) protrudes from the shell wall of the outer casing (2), and the LED light (82) and the LED light switch (83) pass through the flexible circuit The board is turned on.