Electric screwdriver with mode switching function

Abstract

The utility model relates to the technical field of electric screwdrivers, in particular to an electric screwdriver with a mode switching function, which comprises a clutch component and a motor component in driving connection with the clutch component. The clutch assembly comprises an output shaft, a shaft sleeve arranged on the outer side of the output shaft in a sleeving mode, a switching block arranged on the output shaft, a switching disc in driving connection with the motor assembly and a pin shaft arranged on the switching disc, the switching disc is provided with a blocking piece, and a blocking strip is arranged on the inner wall of the blocking piece. A first limiting strip and a second limiting strip are arranged on the outer wall of the switching block, the second limiting strip and the first limiting strip are arranged at intervals, and the stopping strip moves back and forth relative to the first limiting strip and the second limiting strip, so that the stopping strip stops and abuts against the first limiting strip and the second limiting strip, and the pin shaft abuts against and is attached to the outer wall of the switching block. Smooth switching between an electric working mode and a manual working mode is achieved, the use flexibility is high, convenient and efficient use is facilitated, and the use experience feeling is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric screwdriver technical field especially, relate to a kind of electric driver with mode switching function. BACKGROUND

[0002] Electric driver is also called electric driver, electric screwdriver, its working principle is based on the conversion of electrical energy into mechanical energy, when user presses switch, the motor inside electric driver starts rotating, torque is transmitted to bit head by gear transmission, screw is driven to rotate by bit head, and then the installation and disassembly of screw can be quickly completed, so it is widely used in aviation, automobile, machinery, electronics and other industries. The existing electric driver can switch to select electric mode or manual mode, but during the process of alternating switching of the two working modes, different special accessories need to be installed and removed to switch the working mode, which is time-consuming and laborious to operate, not conducive to convenient use, and affects the use experience. SUMMARY

[0003] The utility model aims at the deficiency of prior art, provide a kind of electric driver with mode switching function, realize the smooth switching between electric mode and manual mode, it is high in use flexibility, it is favorable to convenient and efficient use, improve use experience.

[0004] To achieve the above object, the utility model provides a kind of electric driver with mode switching function, including clutch assembly and the motor assembly of clutch assembly driving connection, the clutch assembly includes output shaft, the shaft sleeve of the sleeve in the outer side of output shaft, the adapter block of being provided to output shaft, the adapter disc of being drivenly connected to the motor assembly and the pin shaft of being provided to adapter disc, the adapter disc is provided with baffle, the inner wall of the baffle is provided with stop bar, the outer wall of the adapter block is provided with first limit strip and the second limit strip of the interval arrangement with first limit strip, the stop bar moves back and forth between first limit strip and second limit strip, so that stop bar stops and touches first limit strip and second limit strip, and pin shaft touches and fits the outer wall of adapter block.

[0005] Preferably, the baffle is provided with a plurality of baffle, a plurality of baffle is arranged at intervals around adapter disc, the stop bar is protruded from the baffle, the pin shaft is arranged at intervals with stop bar, the middle part of the adapter block is provided with the insertion slot, the bottom of the output shaft is provided with the insertion block, the insertion block is contained in the insertion slot.

[0006] Preferably, the output shaft is provided with containing groove at the end away from the insertion block, the containing groove is arranged along the axial direction of output shaft.

[0007] Preferably, the motor assembly comprises a cavity, a main gear arranged in the cavity, a motor in driving connection with the main gear, a first transmission assembly in meshing connection with the main gear, a second transmission assembly in transmission connection with the first transmission assembly, and an inner gear ring arranged in the cavity, the inner gear ring being arranged around the circumference of the cavity, and the first transmission assembly and the second transmission assembly are both in meshing connection with the inner gear ring.

[0008] Preferably, the first transmission assembly comprises a first planet carrier, a transmission gear arranged on one side of the first planet carrier, a first gear shaft arranged on the other side of the first planet carrier, and a first planet gear arranged on the first gear shaft, the first gear shaft and the first planet gear are respectively arranged in three, and the connecting lines of the three first gear shafts form a triangle, and the connecting lines of the three first planet gears form a triangle.

[0009] Preferably, the second transmission assembly comprises a second planet carrier, an output rod arranged on one side of the second planet carrier, a second gear shaft arranged on the other side of the second planet carrier, and a second planet gear arranged on the second gear shaft, the second gear shaft and the second planet gear are respectively arranged in three, the connecting lines of the three second gear shafts form a triangle, and the connecting lines of the three second planet gears form a triangle, so that the three second planet gears are arranged around the circumference of the transmission gear and are in transmission connection with the transmission gear, and the output rod is connected with the adapter disc.

[0010] The utility model discloses the beneficial effect of realizing the smooth switching between electric mode and manual mode, high flexibility, convenient and efficient use, and improved user experience. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the structural schematic diagram of the utility model.

[0012] Figure 2 It is the exploded structural schematic diagram of the utility model.

[0013] Figure 3 It is the output shaft structural schematic diagram of the utility model.

[0014] Figure 4 It is the adapter block structural schematic diagram of the utility model.

[0015] Figure 5 It is the adapter disc structural schematic diagram of the utility model.

[0016] The reference signs include:

[0017] 1 - clutch assembly 11 - output shaft 12 - shaft sleeve

[0018] 13 - adapter block 14 - adapter disc 15 - pin shaft

[0019] 16 - baffle 17 - stop bar 18 - first limiting bar

[0020] 19 - second limiting bar 110 - insertion slot 111 - insertion block

[0021] 112 - accommodating groove

[0022] 2 - motor assembly 21 - cavity 22 - main gear

[0023] 23 - motor

[0024] 24 - first transmission assembly 241 - first planet carrier 242 - transmission gear

[0025] 243 - first gear shaft 244 - first planetary gear

[0026] 25 - second transmission assembly 251 - second planet carrier 252 - output rod

[0027] 253 - second gear shaft 254 - second planetary gear

[0028] 26 - inner tooth ring. DETAILED DESCRIPTION

[0029] The utility model is described in detail below in combination with the drawings.

[0030] As Figures 1 to 5 shown, the utility model discloses a electric wrench with mode switching function, including clutch assembly 1 and with clutch assembly 1 drive connection's motor assembly 2, clutch assembly 1 includes output shaft 11, the sleeve of setting in output shaft 11 outside axle sleeve 12, the adapter block 13 of setting in output shaft 11, drive connection in motor assembly 2's adapter disc 14 and setting in adapter disc 14's pin shaft 15, adapter disc 14 is provided with baffle 16, the inner wall of baffle 16 is provided with stop bar 17, the outer wall of adapter block 13 is provided with first limiting bar 18 and with the second limiting bar 19 of first limiting bar 18 interval arrangement, stop bar 17 moves back and forth between first limiting bar 18 and second limiting bar 19, to make stop bar 17 stop and resist and touch first limiting bar 18 and second limiting bar 19, and pin shaft 15 resists and touches and fits the outer wall of adapter block 13.

[0031] The user can select to switch the electric working mode or the manual working mode according to different use conditions, when the electric working mode is selected, the motor assembly 2 is started, the adapter disc 14 is driven to rotate by the motor assembly 2, since the stop bar 17 is located between the first limiting strip 18 and the second limiting strip 19, no matter the motor assembly 2 rotates clockwise or counterclockwise, the stop bar 17 can be ensured to move back and forth relative to the first limiting strip 18 and the second limiting strip 19 until the stop bar 17 stops and abuts against the first limiting strip 18 or the second limiting strip 19, meanwhile, the pin shaft 15 keeps abutting against the outer wall of the adapter block 13, so that the adapter block 13 is stably driven to rotate by the adapter disc 14, since the adapter block 13 is connected with the output shaft 11, the output shaft 11 is further driven to rotate, and then the electric working mode can be used to quickly complete the installation and dismounting of the screw. When the manual working mode is selected, the motor assembly 2 is closed, the output shaft 11 is pushed into the inside of the shaft sleeve 12 and is slightly rotated, since the stop bar 17 keeps the state of being stationary at this time, when the first limiting strip 18 or the second limiting strip 19 stops and abuts against the stop bar 17, the position self-locking state is formed between the adapter block 13 and the adapter disc 14, the manual locking screw work can be realized by switching to the manual working mode, and the working mode switching is smooth and efficient. The smooth switching between the electric working mode and the manual working mode is realized, the use flexibility is high, the convenient and efficient use is beneficial, and the use experience is improved.

[0032] The plurality of stop pieces 16 are arranged at intervals around the adapter disc 14, the stop bar 17 is protruded from the stop piece 16, the pin shaft 15 is arranged at intervals with the stop bar 17, the middle part of the adapter block 13 is provided with the inserting groove 110, the bottom of the output shaft 11 is provided with the inserting block 111, and the inserting block 111 is contained in the inserting groove 110. Specifically, preferably, the three stop pieces 16 are arranged at intervals around the adapter disc 14, the stop bar 17 is protruded from the stop piece 16, and the pin shaft 15 is arranged at intervals with the stop bar 17, which is helpful for the stop bar 17 to stop and abut against the first limiting strip 18 and the second limiting strip 19, when the pin shaft 15 abuts against the outer wall of the adapter block 13, the position between the adapter disc 14 and the adapter block 13 is effectively fixed, the output shaft 11 is connected with the inserting block 111 and the inserting groove 110, and then the stable connection between the output shaft 11 and the adapter block 13 is realized, and the connection is stable and reliable.

[0033] The end of the output shaft 11 away from the inserting block 111 is provided with the containing groove 112, and the containing groove 112 is arranged along the axial direction of the output shaft 11. Specifically, the containing groove 112 is arranged along the axial direction of the output shaft 11, the screw can be conveniently contained and placed in the containing groove 112, and the installation and dismounting of the screw are facilitated.

[0034] The motor assembly 2 of the embodiment comprises a cavity 21, a main gear 22 arranged in the cavity 21, a motor 23 drivingly connected with the main gear 22, a first transmission assembly 24 engaged with the main gear 22, a second transmission assembly 25 drivingly connected with the first transmission assembly 24, and an inner ring gear 26 arranged in the cavity 21, the inner ring gear 26 being arranged around the circumference of the cavity 21, and the first transmission assembly 24 and the second transmission assembly 25 are engaged with the inner ring gear 26. Specifically, the motor 23 drives the main gear 22 to rotate, the rotating main gear 22 drives the first transmission assembly 24 to rotate, since the first transmission assembly 24 is drivingly connected with the second transmission assembly 25, and the inner ring gear 26 is arranged around the circumference of the cavity 21, the first transmission assembly 24 and the second transmission assembly 25 jointly rotate in meshing with the inner ring gear 26, and then the second transmission assembly 25 drives the adapter disc 14 to rotate, so that the structure is compact, the carrying capacity is strong, and efficient power transmission is realized.

[0035] The first transmission assembly 24 of the embodiment comprises a first planet carrier 241, a transmission gear 242 arranged on one side of the first planet carrier 241, a first gear shaft 243 arranged on the other side of the first planet carrier 241, and a first planetary gear 244 arranged on the first gear shaft 243, and the first gear shaft 243 and the first planetary gear 244 are respectively arranged in three, and the connecting lines of the three first gear shafts 243 form a triangle, and the connecting lines of the three first planetary gears 244 form a triangle. Specifically, the three first planetary gears 244 are arranged around the circumference of the main gear 22, when the main gear 22 rotates, the three first planetary gears 244 are synchronously driven to rotate by the main gear 22, since the three first planetary gears 244 are respectively arranged on the three first gear shafts 243, the first planet carrier 241 is driven to rotate as a whole, the first planet carrier 241 drives the second transmission assembly 25 to rotate through the transmission gear 242, the traditional three-stage planetary structure is adjusted to two stages, the reduction ratio is 100, the transmission efficiency is improved by 15%, the thickness is reduced, the assembly space of the dust box is reduced, the structure design is optimized, the manufacturing cost of the parts is greatly reduced, the transmission precision is increased, and the structure design of the three first gear shafts 243 can greatly reduce the friction resistance generated by the three first planetary gears 244 during rotation, and improve the transmission efficiency and transmission smoothness.

[0036] The second transmission assembly 25 of the embodiment comprises a second planet carrier 251, an output rod 252 arranged on one side of the second planet carrier 251, a second gear shaft 253 arranged on the other side of the second planet carrier 251, and a second planet gear 254 arranged on the second gear shaft 253, wherein the second gear shaft 253 and the second planet gear 254 are respectively arranged in three, the connecting lines of the three second gear shafts 253 form a triangle, and the connecting lines of the three second planet gears 254 form a triangle, so that the three second planet gears 254 are arranged around the circumference of the transmission gear 242 and are in transmission connection with the transmission gear 242, and the output rod 252 is connected with the adapter disc 14. Specifically, the three second planet gears 254 are arranged around the circumference of the transmission gear 242 and are in transmission connection with the transmission gear 242, when the transmission gear 242 rotates, the three second planet gears 254 are synchronously driven to rotate by the transmission gear 242, since the three second planet gears 254 are respectively arranged on the three second gear shafts 253, the second planet carrier 251 is driven to rotate as a whole, the second planet carrier 251 drives the adapter disc 14 to rotate through the output rod 252, and the transmission efficiency is high.

[0037] The above is only the preferred embodiment of the present application, and for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range can be changed, and the content of the specification should not be understood as the limitation of the present application.

Claims

1. An electric screwdriver having a mode switching function, characterized by comprising: The clutch assembly comprises an output shaft, a sleeve set outside the output shaft, an adapter block arranged on the output shaft, an adapter disc drivingly connected to the motor assembly, and a pin shaft arranged on the adapter disc, wherein the adapter disc is provided with a baffle, the inner wall of the baffle is provided with a stop strip, the outer wall of the adapter block is provided with a first limiting strip and a second limiting strip arranged at intervals with the first limiting strip, and the stop strip moves back and forth between the first limiting strip and the second limiting strip to stop the stop strip from abutting against the first limiting strip and the second limiting strip, and the pin shaft abuts against the outer wall of the adapter block.

2. The electric screwdriver with mode switching function according to claim 1, characterized in that: The baffle is provided with a plurality of baffles arranged at intervals around the adapter disc, the stop strip is protruded from the baffle, and the pin shaft is arranged at intervals with the stop strip.

3. The electric screwdriver with mode switching function according to claim 2, characterized in that: The output shaft is provided with a receiving groove at one end away from the adapter block, and the receiving groove is arranged along the axial direction of the output shaft.

4. The electric screwdriver with mode switching function according to claim 1, characterized in that: The motor assembly comprises a cavity, a main gear arranged in the cavity, a motor drivingly connected to the main gear, a first transmission assembly meshing with the main gear, a second transmission assembly drivingly connected to the first transmission assembly, and an inner ring gear arranged in the cavity, wherein the inner ring gear is arranged around the periphery of the cavity, and the first transmission assembly and the second transmission assembly are both meshed with the inner ring gear.

5. The electric screwdriver with mode switching function according to claim 4, characterized in that: The first transmission assembly comprises a first planet carrier, a transmission gear arranged on one side of the first planet carrier, a first gear shaft arranged on the other side of the first planet carrier, and a first planet wheel arranged on the first gear shaft, wherein the first gear shaft and the first planet wheel are respectively provided with three, and the connecting lines of the three first gear shafts form a triangle, and the connecting lines of the three first planet wheels form a triangle.

6. The electric screwdriver with mode switching function according to claim 5, characterized in that: The second transmission assembly comprises a second planet carrier, an output rod arranged on one side of the second planet carrier, a second gear shaft arranged on the other side of the second planet carrier, and a second planet wheel arranged on the second gear shaft, wherein the second gear shaft and the second planet wheel are respectively provided with three, the connecting lines of the three second gear shafts form a triangle, and the connecting lines of the three second planet wheels form a triangle, so that the three second planet wheels are arranged around the periphery of the transmission gear and drivingly connected to the transmission gear, and the output rod is connected to the adapter disc.

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