CN207841168U - A kind of electric screw driver and locking device - Google Patents
A kind of electric screw driver and locking device Download PDFInfo
- Publication number
- CN207841168U CN207841168U CN201721640229.7U CN201721640229U CN207841168U CN 207841168 U CN207841168 U CN 207841168U CN 201721640229 U CN201721640229 U CN 201721640229U CN 207841168 U CN207841168 U CN 207841168U
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- locking ring
- block
- fixing sleeve
- lock pin
- stop block
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Abstract
The utility model is related to a kind of electric tool more particularly to a kind of electric screw drivers and locking device.Locking device includes the power plate and locking ring of fixing sleeve and rolling assembling in fixing sleeve, power plate includes confinement block, the periphery of locking ring is equipped with cam surface, lock pin is folded between locking ring and fixing sleeve, the periphery of locking ring is additionally provided with the stop block of evagination, it is pushing tow face between stop block and cam surface, in the circumferential, lock pin is between stop block and confinement block, and the both sides of stop block are equipped with the lock pin, the distance between pushing tow face of locking ring to fixing sleeve inner peripheral surface is gradually reduced from stop block at cam surface；There is power plate rotation stop hole, the side of the close power plate of locking ring to be equipped with the centre bore for getting out of the way power output shaft.Lock pin by fixing sleeve and locking ring and between the two can realize electronic, manual mode switching automatically, carry out implementation pattern switching without separately setting other structures and operation, overall structure is simple, easy to use.
Description
Technical field
The utility model is related to a kind of electric tool more particularly to a kind of electric screw drivers and locking device.
Background technology
Existing electric screw driver usually has manual and electronic both of which, so as to according to different need of work switchings
Different patterns.When being switched to manual mode, need using the screwdriver bit idle running locked to output shaft to prevent screwdriver.
Application No. is the Chinese patent documents of 200420047707X to disclose a kind of locking dress of electric tool output shaft
It sets, which includes the power plate and locking ring of fixing sleeve and rolling assembling in fixing sleeve, and power plate includes fan-shaped along axis
To the confinement block of protrusion, locking ring has the peripheral surface being made of flat face and cam surface, sandwiched between locking ring and fixing sleeve
There is lock pin, lock can be accommodated by being constituted between the peripheral surface of locking ring, the inner peripheral surface of fixing sleeve and the adjacent confinement block of power plate
The accommodation space of pin, radially, the diameter of lock pin are more than the distance between the inner peripheral surface of the cam surface and fixing sleeve of locking ring,
Locking ring and power plate are respectively provided with the first engaging portion and the second engaging portion coordinated with output shaft rotation stop.When electric operating,
Power plate directly makes output shaft synchronous forward rotate by the second engaging portion；When operated, it first has to that output shaft is made to be detached from
The second engaging portion for opening power plate, rotates to prevent power plate with output shaft synchronous, and then output shaft is driven by the first engaging portion
Locking ring backwards rotation, by the middle flat face of peripheral surface by the confinement block of lock pin backup to power plate in locking ring rotation process
Reach on-position, to lock output shaft.This device needs to make output shaft and power plate phase when switching to manual operation
Axial movement is detached from, is more troublesome, and increase the axial dimension of single unit system, it is complicated.
Utility model content
In order to overcome the deficiencies of existing technologies, the purpose of this utility model is to provide one kind convenient for switching to manual and structure
Simple locking device, the utility model additionally provide the electric screw driver using the locking device.
In order to achieve the goal above, the technical solution of the utility model locking device is：
Locking device includes the power plate and locking ring of fixing sleeve and rolling assembling in fixing sleeve, and power plate includes along axis
To the confinement block of protrusion, the periphery of locking ring is equipped with cam surface corresponding with confinement block, sandwiched between locking ring and fixing sleeve
There are lock pin, the distance between the cam surface of locking ring and the inner peripheral surface of fixing sleeve to be less than the diameter of lock pin and the diameter more than confinement block
To thickness, the periphery of locking ring is additionally provided with the stop block of evagination, is pushing tow face between stop block and cam surface, in the circumferential, lock
Pins position is between stop block and confinement block, and the both sides of stop block are equipped with the lock pin, the pushing tow face of locking ring to fixing sleeve
The distance between inner peripheral surface is gradually reduced from stop block at cam surface；Power plate has for matching with power output shaft rotation stop
The rotation stop hole of conjunction, the side of the close power plate of locking ring are equipped with the centre bore for getting out of the way power output shaft, locking ring it is another
Side is equipped with the mounting portion for rotation stop assembly screwdriver bit.
The periphery of locking ring is uniformly distributed there are three the stop block, is set on power plate there are three the confinement block, stop block and
Confinement block arranged for interval in the circumferential.
On the cross section of locking ring, the stop block is in the small T shapes of outer imperial palace.
The pushing tow face is flat face.
The technical solution of the utility model electric screw driver is：
Electric screw driver includes outer housing and locking device, and locking device includes the fixing sleeve being fixed in outer housing, Gu
Power plate and locking ring are rotatably equipped in fixed set, power plate includes the confinement block of protrusion in an axial direction, and the periphery of locking ring is equipped with
Cam surface corresponding with confinement block, is folded with lock pin between locking ring and fixing sleeve, the cam surface of locking ring and fixing sleeve
The distance between inner peripheral surface is less than the diameter of lock pin and the radial thickness more than confinement block, and the periphery of locking ring is additionally provided with evagination
Stop block is pushing tow face between stop block and cam surface, and in the circumferential, lock pin is between stop block and confinement block, and block
The both sides of block are equipped with the lock pin, and the distance between pushing tow face of locking ring to fixing sleeve inner peripheral surface is from stop block to cam
It is gradually reduced at face；Power plate has the rotation stop hole for coordinating with power output shaft rotation stop, the close power plate of locking ring
Side is equipped with the centre bore for getting out of the way power output shaft, and the other side of locking ring is equipped with the installation for rotation stop assembly screwdriver bit
Portion.
The periphery of locking ring is uniformly distributed there are three the stop block, is set on power plate there are three the confinement block, stop block and
Confinement block arranged for interval in the circumferential.
On the cross section of locking ring, the stop block is in the small T shapes of outer imperial palace.
The pushing tow face is flat face.
Driving motor is additionally provided in outer housing, driving motor is sequentially connected with power output shaft by reduction box.
The section in the rotation stop hole is D-shaped, and the centre bore of locking ring is the circular hole more than rotation stop hole.
In the utility model, when electric operating, the lock pin in front is pressed on front by power plate rotation by its confinement block
Stop block on, drive locking ring rotation, positioned at confinement block rear axis pin by its rear stop block promotion rotates therewith,
During this, each axis pin is located at the stop block, and the position in corresponding pushing tow face is apart from fixing sleeve inner peripheral surface farther out big
Distance and position, each axis pin are in unlocked state；When switching to manual operation, locking ring drives rotation by screwdriver bit, is located at
Pushing tow corresponding to the axis pin at stop block rear faces toward the small distance position movement closer apart from fixing sleeve inner peripheral surface, by lock pin
It is gradually clamped between fixing sleeve and locking ring, is in the lock state so that fixing sleeve and locking ring forward rotate together.Pass through
Fixing sleeve and locking ring and lock pin between the two, can realize electronic, manual mode switching, without separately setting other structures automatically
Carry out implementation pattern switching with operation, in addition, since power plate and locking ring have overlapping to accommodate lock pin in the axial direction, when use is dynamic
Power output shaft may pass through the cooperation of power plate rotation stop, and the utility model, to get out of the way power output shaft, is locked in the center opening of locking ring
It is simple to determine device overall structure, it is easy to use.
Further, since the stop block of locking ring periphery is radially raised, the angle with the inner peripheral surface of fixing sleeve
Will not be obtuse angle, during electric operating, being pressed on the axis pin on stop block through confinement block, it is easy to appear be stuck in the angle
Place and the problem of stagnate, can influence to use, stop block is designed as the small T shapes of outer imperial palace in the utility model, pin can be avoided
Axis clamping stagnation is in the angle of stop block and fixing sleeve inner peripheral surface, by simple structure design, ensures that operational process is more smoothly,
Improve use reliability.
Description of the drawings
Fig. 1 is the cross-sectional view of the locking device of electric screw driver in the utility model first embodiment；
Fig. 2 is the Longitudinal cross section schematic of the electric screw driver in Fig. 1；
Fig. 3 is the cross-sectional view of the locking device of electric screw driver in the utility model second embodiment.
Specific implementation mode
The technical solution of the utility model is described in detail below by specific embodiment.
First embodiment, as shown in Figure 1 and Figure 2, electric screw driver include outer housing 5 and the locking that is fixed in outer housing 5
Device, locking device include the power plate 2 and locking of the fixing sleeve 1 and rolling assembling that are fixed in outer housing 5 in fixing sleeve 1
The end face of ring 3, power plate 2 is equipped with confinement block 21 raised in an axial direction, and three confinement blocks 21 are in the circumferential direction of power plate 2
It is uniformly distributed, the periphery of locking ring 3 corresponds to the position of limited block 21 equipped with the cam surface that can be rotated relative to confinement block 21
31, lock pin 4 is folded between locking ring 3 and fixing sleeve 1, between the cam surface 31 and the inner peripheral surface of fixing sleeve 1 of locking ring away from
Radial thickness from the diameter less than lock pin 4 and more than confinement block 21.The periphery of locking ring 3 is additionally provided with the stop block 32 of evagination,
There are three stop blocks 32, and respectively with three 21 circumferentially-spaced arrangements of confinement block, each stop block 32 is located at two neighboring confinement block 21
Between, be pushing tow face 33 in the periphery of locking ring 3, between stop block 32 and cam surface 31, lock pin 4 altogether there are six, each lock pin 4 is equal
Between adjacent confinement block 21 and confinement block 32, the both sides of confinement block 21 in the circumferential are equipped with lock pin 4, the top of locking ring
Pushing surface 33 is gradually reduced from stop block 32 at cam surface 31 to the distance between 1 inner peripheral surface of fixing sleeve.
Outer housing 5 is removable structure, is provided with driving motor 6, driving motor 6 is sequentially connected with dynamic by reduction box 7
Power output shaft 8, power output shaft 8 coordinate with 22 rotation stop of rotation stop hole on power plate 2 in locking device, and the section in rotation stop hole 22 is in
D-shaped, the side of the close power plate 2 of locking ring 3（Upside i.e. in figure）Equipped with the centre bore for getting out of the way power output shaft 8
34, the other side of locking ring 3（That is downside）The mounting portion 35 of screwdriver bit 9 is assembled equipped with rotation stop, centre bore 34 is circular hole, mounting portion 35
For interior hexagonal hole.Locking ring 3 and fixing sleeve 1 are up big and down small ladder nested structure, locking ring and fixing sleeve from top to down, by
It is interior to be sleeved in outer housing to other places.
When in use, when electric operating, by lower switch, driving motor 6 must be electric, will by reduction box 7 for electric screw driver
Power reaches power output shaft 8, and power output shaft 8 drives power plate 2 to rotate synchronously, and the confinement block 21 on power plate 2 is along rotation
The lock pin 4 in its front in rotation direction is pressed on the stop block 32 in front by direction, is driven locking ring 3 to rotate, is located at
The lock pin 4 at 21 rear of confinement block pushes synchronous rotation, each lock pin to be located at stop block 32 by the stop block 32 at rear
Big distance and position, be in unlocked state, locking ring drives the screwdriver bit that is assembled on its mounting portion to rotate synchronously；Work as manual operation
When, the confinement block 21 and lock pin 4 on power plate 2 are motionless, drive locking ring 3 to rotate first by screwdriver bit, 3 rotation process of locking ring
In, on the basis of motionless axis pin 4, pushing tow face 33 is gradually cut towards close to the small distance position of cam surface 31 by big distance and position
It changes, then positioned at stop block 32 fixing sleeve and lock certainly will be fixed on by 33 pushing tow of pushing tow face in the posterosuperior lock pin of rotation direction 4
Between determining ring, reach locking on-position, to lock the screwdriver bit on locking ring, enable screwdriver bit with outer housing together forward
Rotation.
Second embodiment, as shown in figure 3, different from the first embodiment, the confinement block 210 on power plate 2 is one,
Stop block 320 on locking ring is one, and the cross section of cam surface 310 is in major arc, and lock pin 40 is distributed in stop block there are two being total to
320 both sides.
In the first and second embodiment, on the cross section of locking ring, the stop block is in the small T shapes of outer imperial palace.At other
In embodiment, stop block can also be vertical bar shaped.
In the first and second embodiment, the pushing tow face of locking ring periphery is flat face.In other embodiments, pushing tow face is also
Can be curved surface, since the distance between pushing tow face to fixing sleeve inner peripheral surface is more than the diameter of lock pin at stop block, in cam
The diameter of lock pin is then decreased below at face, then, during pushing tow face is relative to fixing sleeve backwards rotation, pushing tow face energy
It is enough that lock pin pushing tow is locked on the inner peripheral surface of fixing sleeve.
In the embodiment of the locking device of the utility model, the embodiment of the structure of locking device and above-mentioned electric screw driver
The structure of middle locking device is identical, and details are not described herein.
The utility model is described in detail above, but the scope of protection of the utility model is not limited to above-mentioned implementation
Example.Equivalent change or modification made by all Spirit Essences according to the present utility model should all cover the protection in the utility model
In range.
Claims (10)
1. locking device includes the power plate and locking ring of fixing sleeve and rolling assembling in fixing sleeve, power plate includes along axis
To the confinement block of protrusion, the periphery of locking ring is equipped with cam surface corresponding with confinement block, sandwiched between locking ring and fixing sleeve
There are lock pin, the distance between the cam surface of locking ring and the inner peripheral surface of fixing sleeve to be less than the diameter of lock pin and the diameter more than confinement block
To thickness, it is characterised in that：The periphery of locking ring is additionally provided with the stop block of evagination, is pushing tow face between stop block and cam surface,
In the circumferential, lock pin is between stop block and confinement block, and the both sides of stop block are equipped with the lock pin, the pushing tow of locking ring
Face is gradually reduced from stop block at cam surface to the distance between fixing sleeve inner peripheral surface；Power plate has for defeated with power
The rotation stop hole of shaft rotation stop cooperation, the side of the close power plate of locking ring are equipped with the centre bore for getting out of the way power output shaft,
The other side of locking ring is equipped with the mounting portion for rotation stop assembly screwdriver bit.
2. locking device according to claim 1, it is characterised in that：The periphery of locking ring is uniformly distributed, and there are three the blocks
Block is set on power plate there are three the confinement block, stop block and confinement block arranged for interval in the circumferential.
3. locking device according to claim 1 or 2, it is characterised in that：On the cross section of locking ring, the stop block
In the small T shapes of outer imperial palace.
4. locking device according to claim 1 or 2, it is characterised in that：The pushing tow face is flat face.
5. a kind of electric screw driver, including outer housing and locking device, locking device includes the fixing sleeve being fixed in outer housing,
Power plate and locking ring are rotatably equipped in fixing sleeve, power plate includes the confinement block of protrusion in an axial direction, and the periphery of locking ring is set
There is cam surface corresponding with confinement block, lock pin, the cam surface and fixing sleeve of locking ring are folded between locking ring and fixing sleeve
The distance between inner peripheral surface be less than the diameter of lock pin and the radial thickness more than confinement block, it is characterised in that：Outside locking ring
It is additionally provided with the stop block of evagination week, is pushing tow face between stop block and cam surface, in the circumferential, lock pin is located at stop block and limitation
Between block, and the both sides of stop block are equipped with the lock pin, the distance between pushing tow face of locking ring to fixing sleeve inner peripheral surface from
It is gradually reduced at cam surface at stop block；Power plate has the rotation stop hole for coordinating with power output shaft rotation stop, locking ring
The side of close power plate be equipped with centre bore for getting out of the way power output shaft, the other side of locking ring is equipped with to be filled for rotation stop
Mounting portion with screwdriver bit.
6. electric screw driver according to claim 5, it is characterised in that：The periphery of locking ring is uniformly distributed, and there are three the blocks
Block is set on power plate there are three the confinement block, stop block and confinement block arranged for interval in the circumferential.
7. electric screw driver according to claim 5 or 6, it is characterised in that：On the cross section of locking ring, the block
Block is in the small T shapes of outer imperial palace.
8. electric screw driver according to claim 5 or 6, it is characterised in that：The pushing tow face is flat face.
9. electric screw driver according to claim 7, it is characterised in that：Driving motor, driving electricity are additionally provided in outer housing
Machine is sequentially connected with power output shaft by reduction box.
10. electric screw driver according to claim 5, it is characterised in that：The section in the rotation stop hole is D-shaped, locking ring
Centre bore be more than rotation stop hole circular hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721640229.7U CN207841168U (en) | 2017-11-30 | 2017-11-30 | A kind of electric screw driver and locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721640229.7U CN207841168U (en) | 2017-11-30 | 2017-11-30 | A kind of electric screw driver and locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207841168U true CN207841168U (en) | 2018-09-11 |
Family
ID=63422970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721640229.7U Active CN207841168U (en) | 2017-11-30 | 2017-11-30 | A kind of electric screw driver and locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207841168U (en) |
-
2017
- 2017-11-30 CN CN201721640229.7U patent/CN207841168U/en active Active
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| GR01 | Patent grant | ||
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