CN210909771U

CN210909771U - Electric screwdriver convenient for adjusting manual torque force

Info

Publication number: CN210909771U
Application number: CN201921866786.XU
Authority: CN
Inventors: 杨桂喜
Original assignee: Nanjing Bull Machinery Development Co ltd
Current assignee: Nanjing Bull Machinery Development Co ltd
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-07-03
Anticipated expiration: 2029-11-01

Abstract

The utility model discloses an electronic screwdriver convenient to adjust manual torsion, including casing, gear box and thread bush, the circuit board is installed on the inside right side of casing, and circuit board and battery electric connection to battery and motor electric connection, the gear box is installed in the side of motor, and the left side of gear box installs torsion adjusting device, the thread bush sets up in the left side of transmission shaft outsidely, and the externally mounted of thread bush has the adjusting disk to the light is installed to the inboard of thread bush, the right side internally mounted of thread bush has the moment clamp plate, and the moment clamp plate passes through moment spring and moves gear interconnect, and moves the side-mounting of gear and have the auto-lock circle, the inside auto-lock core that is provided with in side of auto-lock circle, and install the auto-lock group from the outside of lock core. This electronic screwdriver convenient to adjust manual torsion adopts neotype structural design for torsion when this device is convenient for control manual operation, it is comparatively convenient to use.

Description

Electric screwdriver convenient for adjusting manual torque force

Technical Field

The utility model relates to an electronic screwdriver technical field specifically is an electronic screwdriver convenient to adjust manual torsion.

Background

The electric screwdriver is an electric tool used for processing screws, is widely used in processing production, drives the screws to rotate through an electric transmission structure, is high in processing speed, saves labor force, is provided with a protective shell on the outer surface, and is safe to use.

However, some existing electric screwdrivers can manually provide torque after the rapid electric driving screwing is completed, but when the electric screwdrivers provide manual torque for work, the torque cannot be adjusted, operators control the electric screwdrivers according to the feeling, the electric screwdrivers are inconvenient to use, and the final output result is unreliable.

Therefore, it is necessary to design a power screwdriver which is convenient for adjusting the manual torque force in view of the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electronic screwdriver convenient to adjust manual torsion to it accomplishes the back to provide quick electric drive rotating to propose some electronic screwdrivers current in the above-mentioned background art, can get into the manual moment of torsion that provides, nevertheless provides manual moment of torsion during operation, and its moment of torsion can not be adjusted, and the operating personnel people relies on the sensation to control, uses comparatively inconveniently, and the insecure problem of result of last output.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an electronic screwdriver convenient to adjust manual torsion, includes casing, gear box and thread bush, the circuit board is installed on the inside right side of casing, and circuit board and battery electric connection to battery and motor electric connection, the gear box is installed in the side of motor, and the left side of gear box installs torsion adjusting device to torsion adjusting device's inboard through connection has the transmission shaft, the thread bush sets up in the left side of transmission shaft outsidely, and the externally mounted of thread bush has the adjustment disk to the light is installed to the inboard of thread bush, the right side internally mounted of thread bush has the moment clamp plate, and the moment clamp plate passes through moment spring and moves gear interconnect, and moves the side-mounting of gear and have the auto-lock circle, the inside auto-lock core that is provided with in the side of auto-lock circle, and the auto-lock group is installed in the outside.

Preferably, the torque adjusting device is composed of a torque pressure plate, a torque spring, a moving gear, a self-locking ring, a self-locking core and a self-locking group.

Preferably, the force transmission shaft is in through connection with the adjusting disc, and the adjusting disc is in threaded connection with the threaded sleeve.

Preferably, the torque pressing plate is connected with the threaded sleeve in a chimeric mode, the torque pressing plate and the moving gear form an elastic structure through a torque spring, and the moving gear and the shell form a sliding structure.

Preferably, the side of moving gear and self-locking ring all is serration structure, and moves the gear and is connected with the self-locking ring block.

Preferably, the self-locking core is in rigid fit with the transmission shaft, and the right cross section of the self-locking core is of an irregular structure.

Compared with the prior art, the beneficial effects of the utility model are that: the electric screwdriver convenient for adjusting the manual torque force adopts a novel structural design, so that the device can adjust the torque force when the device is manually controlled, and is convenient to use;

1. the side of the cross section of the lock cylinder is of an irregular structure, in the process of electric rotation, power drives the transmission shaft to rotate, and as the radius of the transverse section of the boss on the lock cylinder is changed, when torque force comes from a motor end, when the lock cylinder is combined with the self-locking group, the small cylinder of the self-locking group is just positioned at the position with smaller radius of the transverse section of the boss, the small cylinder cannot be extruded to the inner wall of the self-locking ring to be expanded, and the self-locking group and the self-locking ring are in a disengaged state at the moment, so that other parts in the torque adjusting device are not involved in electric work, and the device can be;

2. the adjusting disk and the thread bush that threaded connection set up, when the device used manual operation, pushed the thread bush through rotating the adjusting disk and removed, the thread bush inwards compressed torque spring, and the torsion of the device when manual operation was controlled through the compressive capacity of control torque spring, it is comparatively convenient to use.

Drawings

FIG. 1 is a front exploded view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a front sectional view of the present invention;

fig. 4 is a schematic front sectional view of the torque adjusting device of the present invention;

fig. 5 is a schematic view of the vertical partial exploded structure of the present invention.

In the figure: 1. a housing; 2. a circuit board; 3. a battery; 4. a motor; 5. a gear case; 6. a torque force adjusting device; 7. a drive shaft; 8. a threaded sleeve; 9. an adjusting disk; 10. an illuminating lamp; 11. a moment pressing plate; 12. a torque spring; 13. a moving gear; 14. a self-locking ring; 15. a self-locking cylinder; 16. and (4) self-locking groups.

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.

Referring to fig. 1-5, the present invention provides a technical solution: an electric screwdriver convenient for adjusting manual torque force comprises a machine shell 1, a circuit board 2, a battery 3, a motor 4, a gear box 5, a torque force adjusting device 6, a transmission shaft 7, a threaded sleeve 8, an adjusting disc 9, a lighting lamp 10, a torque pressing plate 11, a torque spring 12, a moving gear 13, a self-locking ring 14, a self-locking core 15 and a self-locking group 16, wherein the circuit board 2 is installed on the right side inside the machine shell 1, the circuit board 2 is electrically connected with the battery 3, the battery 3 is electrically connected with the motor 4, the gear box 5 is installed on the side surface of the motor 4, the torque force adjusting device 6 is installed on the left side of the gear box 5, the transmission shaft 7 penetrates through the inner side of the torque force adjusting device 6, the threaded sleeve 8 is arranged outside the left side of the transmission shaft 7, the adjusting disc 9 is installed outside the threaded sleeve 8, the lighting lamp 10 is installed inside the, and the moment pressing plate 11 is connected with the moving gear 13 through the moment spring 12, and the side of the moving gear 13 is provided with the self-locking ring 14, the side of the self-locking ring 14 is internally provided with the self-locking core 15, and the outer side of the self-locking core 15 is provided with the self-locking group 16.

In this example, the torque adjusting device 6 is composed of a torque pressing plate 11, a torque spring 12, a moving gear 13, a self-locking ring 14, a self-locking core 15 and a self-locking group 16, and the above structural design is convenient for adjusting the torque when the device is manually operated;

the transmission shaft 7 is in through connection with the adjusting disc 9, the adjusting disc 9 is in threaded connection with the threaded sleeve 8, and the transmission adjusting disc 9 controls the threaded sleeve 8 to move towards the side surface;

the moment pressing plate 11 is connected with the threaded sleeve 8 in an embedded mode, the moment pressing plate 11 and the moving gear 13 form an elastic structure through the moment spring 12, the moving gear 13 and the machine shell 1 form a sliding structure, and the moment pressing plate 11 is pushed to compress the moment spring 12 towards the side face when the threaded sleeve 8 moves towards the side face;

the side surfaces of the moving gear 13 and the self-locking ring 14 are both in a sawtooth structure, the moving gear 13 is connected with the self-locking ring 14 in a clamping manner, and when the generated torque force is larger than the set torque force of the device, the moving gear 13 and the self-locking ring 14 move relatively to generate a slipping phenomenon;

the self-locking core 15 is in rigid fit with the transmission shaft 7, the right cross section of the self-locking core 15 is in an irregular structure, and the design structure is convenient for controlling the loosening or fixing state between the self-locking group 16 and the self-locking ring 14.

The working principle is as follows: when the device is used, firstly, according to the structure shown in figures 1, 2, 3 and 5, when the screwdriver works electrically, the switch of the motor 4 is started, the motor 4 enables the gear box 5 to run in a speed reduction mode through the transmission structure, the gear box 5 drives the self-locking group 16 to rotate, the self-locking group 16 drives the self-locking cylinder 15 to rotate in the rotating process, the self-locking cylinder 15 is in rigid fit with the transmission shaft 7, so the torsion is transmitted to the transmission shaft 7 from the self-locking cylinder 15, the transverse section of the boss on the self-locking cylinder 15 is in an irregular structure, the radius of the boss on the side surface of the self-locking cylinder 15 changes, when the torsion comes from the motor 4, the small cylinder of the self-locking group 16 is just at the position with the smaller radius of the transverse section of the boss on the self-locking cylinder 15, so the self-locking group 16 cannot be extruded to the inner wall of the self-locking ring 14 to be expanded, at the moment, the self-locking group 16 and the self-, the electric and manual operation modes can be separately and independently used;

then, according to the structure shown in fig. 1, fig. 3, fig. 4 and fig. 5, when the screwdriver is operated by manual operation, firstly, the manual torque is adjusted and set, the compression deformation amount of the torque spring 12 is adjusted to control the torque, the adjusting disk 9 is manually rotated, the thread bush 8 screwed on the side surface of the adjusting disk 9 moves axially, the torque pressing plate 11 moves axially along with the torque pressing plate, the torque pressing plate 11 compresses the torque spring 12 to the side surface, the torque spring 12 deforms elastically, the deformation rebound force is pressed on the moving gear 13 as positive pressure, the case 1 is rotated by hand, the device generates reverse torque in the process of rotating the screw, the part of torque is transmitted to the transmission shaft 7, the transmission shaft 7 is in rigid fit with the self-locking core 15, the self-locking core 15 is driven to rotate, so that the small cylinder in the self-locking group 16 is pressed and expanded to the inner ring surface of the self-locking ring 14, at this time, the self-locking core, the self-locking ring 14 is connected with the sawtooth on the side surface of the movable gear 13 in a clamping mode, when the transmitted torque force is larger than a set torque force value, the movable gear 13 and the tooth block on the side surface of the self-locking ring 14 can slide relatively, the generated axial thrust force is larger than the positive pressure generated by the deformation of the torque spring 12, the movable gear 13 is jacked up, the movable gear 13 and the self-locking ring 14 are tripped, transmission is failed, and further the torque force is not larger than the set value.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an electronic screwdriver convenient to adjust manual torsion, includes casing (1), gear box (5) and thread bush (8), its characterized in that: the motor is characterized in that a circuit board (2) is installed on the right side inside the casing (1), the circuit board (2) is electrically connected with a battery (3), the battery (3) is electrically connected with a motor (4), a gear box (5) is installed on the side face of the motor (4), a torsion adjusting device (6) is installed on the left side of the gear box (5), a transmission shaft (7) is connected to the inner side of the torsion adjusting device (6) in a penetrating mode, a threaded sleeve (8) is arranged on the outer portion of the left side of the transmission shaft (7), an adjusting disc (9) is installed on the outer portion of the threaded sleeve (8), an illuminating lamp (10) is installed on the inner side of the threaded sleeve (8), a torque pressing plate (11) is installed on the inner portion of the right side of the threaded sleeve (8), the torque pressing plate (11) is connected with a moving gear (13) through a torque spring (12), and a, the self-locking ring is characterized in that a self-locking core (15) is arranged inside the side surface of the self-locking ring (14), and a self-locking group (16) is installed on the outer side of the self-locking core (15).

2. An electric screwdriver as defined in claim 1, wherein said electric screwdriver is capable of adjusting manual torque force, and comprises: the torsion adjusting device (6) is composed of a moment pressing plate (11), a moment spring (12), a movable gear (13), a self-locking ring (14), a self-locking core (15) and a self-locking group (16).

3. An electric screwdriver as defined in claim 1, wherein said electric screwdriver is capable of adjusting manual torque force, and comprises: the transmission shaft (7) is in through connection with the adjusting disc (9), and the adjusting disc (9) is in threaded connection with the threaded sleeve (8).

4. An electric screwdriver as defined in claim 1, wherein said electric screwdriver is capable of adjusting manual torque force, and comprises: the torque pressing plate (11) is connected with the threaded sleeve (8) in a embedded mode, the torque pressing plate (11) and the moving gear (13) form an elastic structure through the torque spring (12), and the moving gear (13) and the machine shell (1) form a sliding structure.

5. An electric screwdriver as defined in claim 1, wherein said electric screwdriver is capable of adjusting manual torque force, and comprises: the side surfaces of the moving gear (13) and the self-locking ring (14) are of sawtooth structures, and the moving gear (13) is connected with the self-locking ring (14) in a clamping mode.

6. An electric screwdriver as defined in claim 1, wherein said electric screwdriver is capable of adjusting manual torque force, and comprises: the self-locking core (15) is in rigid fit with the transmission shaft (7), and the cross section of the right side of the self-locking core (15) is of an irregular structure.