CN212665925U

CN212665925U - Electric tool

Info

Publication number: CN212665925U
Application number: CN202020375537.7U
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: 2020-03-23
Filing date: 2020-03-23
Publication date: 2021-03-09
Anticipated expiration: 2030-03-23

Abstract

The utility model provides an electric tool, it includes: the key assembly, battery, motor, power transmission mechanism, power take off mechanism, light. The utility model discloses an electric tool can realize the auto-lock when manual output, is favorable to directly utilizing electric tool manually operation. Through carrying out optimal design to the output shaft, can guarantee that the batch head swing is little, made things convenient for user's operation. The utility model discloses an electric tool still has the button subassembly of optimizing the setting, and it is favorable to controlling electric tool. The utility model discloses an electric tool is last still to be provided with the light that can provide the illumination.

Description

Electric tool

Technical Field

The utility model relates to an electric tool technical field especially relates to an electric tool.

Background

The screwdriver is an electric tool used for occasions involving tiny screw assembling and disassembling, such as mobile phone maintenance. However, the output power of the electric screwdriver is limited, and when the screw needs a large force to rotate, the existing screwdriver is not suitable, and the manual screwdriver needs to be replaced, which brings inconvenience to the operator. In addition, when the existing screw driver works, the problem of large swing of the driver head still exists. Therefore, it is necessary to provide a further solution to the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electric tool to overcome the not enough that exists among the prior art.

In order to solve the technical problem, the technical scheme of the utility model is that:

a power tool, comprising: the key assembly, the battery, the motor, the power transmission mechanism, the power output mechanism, the speed regulation mechanism and the illuminating lamp;

the key assembly includes: control key and circuit board, wherein the control key includes: the circuit board is correspondingly provided with contacts corresponding to the contacts of the control key, and the contacts of the lamp control key and the contacts at the two ends of the main control key touch the corresponding contacts to input corresponding electric signals when pressed;

the battery is electrically connected with the circuit board, the motor and the illuminating lamp through electric connecting wires;

the power transmission mechanism includes: the internal gear, be located multistage transmission unit and linkage mechanism of linkage multistage transmission unit in the internal gear, the transmission unit is a set of planet wheel, linkage mechanism is the planet carrier, the planet carrier includes: the linkage gear is fixed on one side of the frame body, the linkage shaft is fixed on the other side of the frame body, one group of planet gears are respectively sleeved on the corresponding linkage shafts, and the linkage gear is positioned between the other group of planet gears and is linked with the planet gears to move synchronously;

the power output mechanism receives power transmitted from the power transmission mechanism, and comprises: the output shaft, the locating sleeve, the clutch disc, the pin and the shifting fork;

the positioning sleeve is axially arranged in a through manner;

the output shaft is accommodated in the positioning sleeve and rotates relative to the positioning sleeve by taking the axis of the output shaft as a rotating shaft, the outer peripheral wall surface of the output shaft is provided with at least two supporting surfaces which are contacted with the inner peripheral wall surface of the positioning sleeve, and the outer peripheral wall surface of the output shaft is provided with a sinking groove positioned between the supporting surfaces;

the output shaft is provided with an output end and an input end, one side of the shifting fork is provided with an extension arm, the extension arm extends into the positioning sleeve and is in transmission connection with the input end through the clutch disc, the pins are distributed in a space defined by the positioning sleeve, the clutch disc and the shifting fork, the clutch disc is provided with a working surface which is self-locked with the pins, the other side of the shifting fork is provided with a transmission shaft, and the planet wheel of the last stage of transmission unit is correspondingly sleeved on the transmission shaft; the output end is matched with one end face of the positioning sleeve through a plurality of steel balls, the output end or the positioning sleeve is provided with a plurality of pits, and the steel balls are arranged in the pits;

the illuminating lamp is fixed on a substrate and sleeved on the positioning sleeve, and the illuminating lamp and the substrate are pressed and fixed by a transparent lampshade;

the speed regulating mechanism comprises a speed regulating knob.

As an improvement of the electric tool of the present invention, the electric tool further comprises an outer housing and an inner housing;

the inner shell is positioned in the outer shell, and the key assembly, the battery, the motor, the power transmission mechanism and the power output mechanism are arranged in the outer shell;

be provided with the limit structure who makes things convenient for interior casing installation to fix on the inside wall of shell body, limit structure includes: the bottom surface of the slot is a plane or an arc surface, and the edges of two sides of the slot are provided with limit strips;

the utility model discloses a portable electronic device, including interior casing, slot, protruding muscle, slide rail, slot, the interior casing divide into about two parts, is provided with assembly terminal and/or pilot hole on the fitting surface of two parts about, still be provided with slide rail and many spacing grooves on the lateral wall of interior casing, when interior casing and shell body assembly, the slide rail cooperate in the slot, protruding muscle cooperates in the spacing groove that corresponds.

As the utility model discloses an electric tool's improvement, be provided with the fixed plate that the axial was arranged in the interior casing, this fixed plate supports key subassembly and the motor that is located above that, still be provided with the limiting plate that is suitable for the battery to fix of radial arrangement in the interior casing.

As the utility model discloses an electric tool's improvement, it is fixed that the motor passes through the motor end plate, the both ends of motor end plate have the fixed part, the motor through the screw lock attach in on the motor end plate, just set up the through-hole that makes things convenient for the motor shaft of motor to stretch out on the motor end plate, it is equipped with a motor gear still to overlap on the motor shaft that stretches out, the motor passes through the motor gear with the power transmission mechanism transmission is connected.

As the improvement of the electric tool, the wear-resistant plate is arranged between the motor end plate and the power transmission mechanism.

As the utility model discloses an electric tool's improvement, it is supplementary to be provided with on the periphery wall of position sleeve the fixed installation department of position sleeve, be provided with the locating piece on the installation department.

As an improvement of the electric power tool of the present invention, the number of the supporting surfaces is two, one of the supporting surfaces is formed at one end of the outer peripheral wall surface, and the other supporting surface is formed at the other end of the outer peripheral wall surface.

As an improvement of the electric tool of the present invention, the output end further has a spacing portion, the spacing portion is located outside the positioning sleeve, and the end surface of the positioning sleeve abuts against the positioning sleeve

As the utility model discloses an electric tool's improvement, the working face comprises the plane of middle arcwall face and both sides, the both ends of working face still are provided with backstop portion, the extension arm stretches into between two backstop portions, the both sides of extension arm are provided with the pin.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses an electric tool can realize the auto-lock when manual output, is favorable to directly utilizing electric tool manually operation.

2. Through carrying out optimal design to the output shaft, can guarantee that the batch head swing is little, made things convenient for user's operation.

3. The utility model discloses an electric tool still has the button subassembly of optimizing the setting, and it is favorable to controlling electric tool.

4. The utility model discloses an electric tool is last still to be provided with the light that can provide the illumination.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 perspective exploded view of the electric tool of the present invention;

fig. 2 is a perspective exploded view of the electric tool of the present invention;

FIG. 3 is an enlarged perspective view of the linkage mechanism;

FIG. 4 is an enlarged perspective view of the clutch plate;

FIG. 5 is a radial cross-sectional view of the clutch plate;

fig. 6 is an enlarged perspective view of the shift fork.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 6, the present invention provides an electric power tool, including: the device comprises an outer shell 11, an inner shell 12, a key assembly 13, a battery 14, a motor 15, a power transmission mechanism 16, a power output mechanism 17, an illuminating lamp 18 and a speed regulating mechanism.

In an exemplary embodiment, the outer housing 11 is disposed to penetrate front and back, and may be an integral structure or a separate structure. Meanwhile, a hollow structure facilitating installation of the key assembly 13 and an opening facilitating interface arrangement are further arranged on the outer shell 11. In addition, still be provided with the limit structure who makes things convenient for interior casing 12 installation fixed on the inside wall of shell body 11, limit structure includes: the slot 111, keep a plurality of protruding muscle 112 that set up with slot 111 interval. The slot 111 and the rib 112 extend along the axial direction of the outer shell 11, the bottom surface of the slot 111 is a plane or an arc surface, and the two side edges of the slot 111 are provided with limit strips. The number of the insertion grooves 111 is at least one.

In an exemplary embodiment, the inner housing 12 is disposed to penetrate front and back, and may be an integral structure or a separate structure. When the split design is adopted, the inner housing 12 is divided into a left part and a right part, and the two parts can be assembled and connected in an inserting manner in the embodiment. Accordingly, the mating surfaces of the left and right portions are provided with the fitting terminals 121 and/or the fitting holes 122.

In an exemplary embodiment, in order to adapt to the assembly between the inner housing 12 and the outer housing 11, a sliding rail 123 and a plurality of limiting grooves 124 are further disposed on an outer side wall of the inner housing 12, and when the inner housing 12 and the outer housing 11 are assembled, the sliding rail 123 is inserted into the insertion slot 111 according to the assembly direction, and the plurality of ribs 112 are correspondingly received in the respective limiting grooves 124.

In an exemplary embodiment, to facilitate mounting and fixing of key assembly 13, battery 14, motor 15, etc., an axially disposed fixing plate 125 is disposed in inner housing 12, and fixing plate 125 can support key assembly 13 and motor 15 thereon. Meanwhile, a radially arranged limiting plate 126 adapted to fix the battery 14 is further provided in the inner housing 12.

In an exemplary embodiment, the key assembly 13 includes: control key 131 and circuit board 132, wherein control key 131 includes: a lamp key 1311 and a main control key 1312, wherein the lamp key 1311 is used for controlling the on/off of the illumination lamp 18, one end of the main control key 1312 is used for controlling the forward rotation of the motor 15, and the other end of the main control key 1312 is used for controlling the reverse rotation of the motor 15, so that the electric tool drives the screwdriver bits to perform corresponding operations. The circuit board 132 is correspondingly provided with a contact corresponding to the contact of the control key 131, so that when the control key 131 is pressed, the contact touches the contact to input a corresponding electrical signal. The circuit board 132 may be an existing circuit board 132, and the design point of the present embodiment is the arrangement manner of the control key 131, and the circuit structure of the circuit board 132 will not be described in detail.

In the exemplary embodiment, the batteries 14 are disposed in a battery compartment at the rear of the inner housing 12, which is defined by the retainer plate. The battery 14 is electrically connected to the circuit board 132, the motor 15, and the illumination lamp 18 via electrical connection lines.

In an exemplary embodiment, the motor 15 is used for providing a driving force, in order to fix the motor 15, the motor 15 is fixed in the inner housing 12 through a motor end plate 151, fixing portions at two ends of the motor end plate 151 extend into hollow structures symmetrically formed on the inner housing 12, the motor 15 is locked on the motor end plate 151 through screws, and a through hole facilitating the shaft of the motor 15 to extend out is formed in the motor end plate 151. The shaft of the extended motor 15 is also sleeved with a motor gear 152.

In the exemplary embodiment, the power transmission mechanism 16 is configured to transmit power provided by the motor 15 to the power take-off mechanism 17. The power transmission mechanism 16 includes: an internal gear 161, a multi-stage transmission unit 162 located in the internal gear 161, and a linkage mechanism 163 that links the multi-stage transmission unit 162. In this embodiment, the transmission unit 162 is a set of planetary gears, the linkage mechanism 163 is a planetary carrier, and the planetary carrier includes: a linkage gear 1632 fixed on one side of the frame body 1631, a linkage shaft 1633 fixed on the other side of the frame body 1631, a group of planet gears are respectively sleeved on the corresponding linkage shaft 1633, the linkage gear 1632 is positioned between the other group of planet gears and is linked with the planet gears to move synchronously. In addition, in order to avoid wear, a wear pad 164 is disposed between the transmission unit 162 adjacent to the motor end plate 151 and the motor end plate 151.

Therefore, the motor gear 152 drives a set of planetary gears to transmit along the internal gear 161, while the planetary gears move around the motor gear 152, another set of planetary gears is driven by a planet carrier to synchronously transmit along the internal gear 161, another set of planetary gears is driven by another planet carrier to synchronously transmit along the internal gear 161, and so on, and finally the power is transmitted to the power output mechanism 17.

The power output mechanism 17 is used for driving the batch head to move. The power output mechanism 17 includes: output shaft 171, position sleeve 172, clutch 173, pin 174, shift fork 175.

The positioning sleeve 172 is used for mounting and fixing the output shaft 171, and in an exemplary embodiment, the positioning sleeve 172 is axially disposed through. The output shaft 171 may be installed in the inner space of the positioning sleeve 172.

In order to facilitate the fixing of the positioning sleeve 172, in an exemplary embodiment, a mounting portion 1721 for assisting the fixing of the positioning sleeve 172 is provided on an outer peripheral wall surface of the positioning sleeve 172, and the positioning sleeve 172 can be conveniently mounted in a housing of the electric tool by means of the mounting portion 1721. Wherein, a positioning block 17211 is arranged on the mounting part 1721. In this embodiment, the number of the mounting portions 1721 is two, and the two mounting portions 1721 are arranged in a central symmetry manner.

The output shaft 171 is used for connecting a bit of the electric tool and driving the bit to work. In an exemplary embodiment, in order to ensure that the batch head swings slightly, the output shaft 171 is accommodated in the positioning sleeve 172 and can rotate with respect to the positioning sleeve 172 about its own axis as a rotation axis. The outer peripheral wall surface of the output shaft 171 has at least two support surfaces 1711 that contact the inner peripheral wall surface of the positioning sleeve 172, and the outer peripheral wall surface of the output shaft 171 is provided with a sunken groove 1712 located between the support surfaces 1711.

With this configuration, the output shaft 171 is housed in the positioning sleeve 172, and the output shaft 171 does not shake relative to the positioning sleeve 172, and the rotation axis thereof is kept fixed and does not become eccentric relative to the positioning sleeve 172. Meanwhile, the at least two supporting surfaces 1711 provide a plurality of supporting points, and the design of the sunken grooves 1712 also reduces the friction force between the output shaft 171 and the positioning sleeve 172, thereby being beneficial to the stable work of the bit connected with the output shaft 171.

In an exemplary embodiment, the supporting surfaces 1711 are two, and in this case, one supporting surface 1711 is formed at one end of the peripheral wall surface, and the other supporting surface 1711 is formed at the other end of the peripheral wall surface. Accordingly, the two support surfaces 1711 may be connected to the intermediate recess 1712 via a step surface.

To achieve power input and output of the output shaft 171, in an exemplary embodiment, the output shaft 171 has an output end and an input end.

The end face of the output end is provided with an axially extending mounting groove 1713 suitable for batch head mounting, and the cross section of the mounting groove 1713 is polygonal in shape in order to facilitate the batch head mounting. Meanwhile, the output end is also provided with a limiting part 1714, and the limiting part 1714 is positioned outside the positioning sleeve 172 and abuts against the end face of the positioning sleeve 172. At this time, the limiting portion 1714 of the output end is matched with one end face of the positioning sleeve 172 through a plurality of steel balls 1715, the limiting portion 1714 of the output end or the positioning sleeve 172 is provided with a plurality of pits, and the steel balls 1715 are arranged in the pits, so that the limiting portion 1714 moves along the end face of the positioning sleeve 172.

The input end can be fitted with a clutch disk 173, on which the clutch disk 173 is correspondingly fitted, the radial cross section of which is designed as a polygon.

The shift fork 175 drives the pivoting motion of the output shaft 171 through the clutch plate 173. In an exemplary embodiment, the shifting fork 175 has an extension arm 1751 on one side, the extension arm 1751 extends into the positioning sleeve 172 and is in transmission connection with the input end through the clutch disc 173, the pins 174 are distributed in a space defined by the positioning sleeve 172, the clutch disc 173 and the shifting fork 175, and the clutch disc 173 has a working surface 1731 which performs self-locking with the pins 174. The extension arms 1751 can be three or other numbers.

In an exemplary embodiment, the working surface 1731 is formed by an arc-shaped surface 17312 in the middle and two plane sets 17313 on two sides, the two ends of the working surface 1731 are further provided with a stopping portion 17311, the extension arm 1751 extends into between the two stopping portions 17311, and the two sides of the extension arm 1751 are provided with the pins 174.

Accordingly, when the output shaft 171 is driven by the external motor 15 to output torque, the fork 175 rotates in a forward or reverse direction, and the extension arm 1751 thereof pushes the pin 174 and rotates the driving clutch 173 through the pin 174, and the clutch 173 pushes the output shaft 171 to rotate through a surface contacting the output shaft 171. At this time, the output shaft 171 can output the shift fork regardless of whether the shift fork rotates in the forward direction or the reverse direction. At this time, the order of power output is: motor 15, shift fork 175, pin 174, clutch 173, output shaft 171.

When self-locking manual torque output is needed, the pin 174 is clamped between the positioning sleeve 172 and the plane of the working surface 1731 of the clutch disc 173, the output shaft 171 is relatively locked by the clutch disc 173 due to the clamping of the pin 174, reverse driving force cannot be transmitted to the shifting fork through the output shaft 171 but is directly transmitted to the positioning sleeve 172, and the positioning sleeve 172 is fixedly arranged, so that the output shaft 171 can be directly driven. Similarly, when the output shaft 171 is driven reversely, the pin 174 and the clutch disc 173 move relatively, and at the moment, the pin 174 is clamped between the positioning sleeve 172 and the plane of the working surface 1731 of the clutch disc 173 to form self-locking, so that the output shaft 171 is prevented from rotating, and manual output is realized. At this time, the order of power output is: output shaft 171, clutch 173, and pin 174.

In an exemplary embodiment, the fork 175 has a drive shaft 1752 on the other side in order to facilitate the fork 175 receiving power input from the outside. The drive shafts 1752 may be three or another number. The planet wheel of the last stage of the transmission unit 162 is correspondingly sleeved on the transmission shaft 1752.

In an exemplary embodiment, the illumination lamp 18 is used to provide illumination. The illuminating lamp 18 may be an LED, etc., and is fixed on a substrate 181 and sleeved on the positioning sleeve 172, and the LED and the substrate 181 are pressed and fixed by a transparent lamp cover 182.

The speed regulating mechanism comprises a speed regulating knob. The speed regulation knob is positioned at the rear side of the electric tool, and the axial direction of the rotation of the speed regulation knob is consistent with the axial line of the body of the electric tool.

To sum up, 1 the utility model discloses an electric tool can realize the auto-lock when manual output, is favorable to directly utilizing electric tool manually operation. 2. Through carrying out optimal design to the output shaft, can guarantee that the batch head swing is little, made things convenient for user's operation. 3. The utility model discloses an electric tool still has the button subassembly of optimizing the setting, and it is favorable to controlling electric tool. 4. The utility model discloses an electric tool is last still to be provided with the light that can provide the illumination.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. 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 power tool, characterized in that the power tool comprises: the key assembly, the battery, the motor, the power transmission mechanism, the power output mechanism, the speed regulation mechanism and the illuminating lamp;

the positioning sleeve is axially arranged in a through manner;

the speed regulating mechanism comprises a speed regulating knob.

2. The power tool of claim 1, further comprising an outer housing and an inner housing;

3. The power tool of claim 2, wherein the inner housing has an axially disposed retaining plate therein that supports the key assembly and the motor thereon, and a radially disposed retaining plate adapted to retain the battery therein.

4. The electric tool according to claim 1, wherein the motor is fixed by a motor end plate, the motor end plate has fixing portions at both ends thereof, the motor is locked to the motor end plate by screws, the motor end plate is provided with a through hole for facilitating the extension of a motor shaft of the motor, the extended motor shaft is further sleeved with a motor gear, and the motor is in transmission connection with the power transmission mechanism through the motor gear.

5. The power tool of claim 4, wherein a wear pad is further disposed between the motor end plate and the power transmission mechanism.

6. The electric tool according to claim 1, wherein a mounting portion for assisting the fixing of the positioning sleeve is provided on an outer peripheral wall surface of the positioning sleeve, and a positioning block is provided on the mounting portion.

7. The electric power tool according to claim 1, wherein the support surfaces are two, one of the support surfaces being formed at one end of the outer peripheral wall surface, and the other of the support surfaces being formed at the other end of the outer peripheral wall surface.

8. The power tool of claim 1, wherein the output end further comprises a limiting portion, and the limiting portion is located outside the positioning sleeve and abuts against an end surface of the positioning sleeve.

9. The power tool of claim 1, wherein the working surface is composed of an arc-shaped surface in the middle and two flat surfaces on two sides, stopping parts are further arranged on two ends of the working surface, the extension arm extends into the space between the stopping parts, and the pins are arranged on two sides of the extension arm.

10. The power tool of claim 1, wherein the speed knob is located on a rear side of the power tool, and an axis of rotation of the speed knob is aligned with an axis of a body of the power tool.