CN205021490U - Automatic stop electric screwdriver - Google Patents
Automatic stop electric screwdriver Download PDFInfo
- Publication number
- CN205021490U CN205021490U CN201520707958.4U CN201520707958U CN205021490U CN 205021490 U CN205021490 U CN 205021490U CN 201520707958 U CN201520707958 U CN 201520707958U CN 205021490 U CN205021490 U CN 205021490U
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- motor
- automatic stop
- spring
- stop electric
- drive division
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Abstract
The utility model provides an automatic stop electric screwdriver, have the tool bit of fixed part, the motor that has the drive division, main control board and casing including one end, motor and main control board set up in in the casing, the motor with main control board electric connection, automatic stop electric screwdriver still includes trigger device and incites somebody to action the fixed part crimping of tool bit in spring unit on the drive division of motor, be equipped with a plurality of wavy archs of outwards following the extension by the center on the drive division of motor, the fixed part for one side of drive division is equipped with an at least free ball, free ball follows on the fixed part protrusion and the crimping in in the motor drive portion, the utility model discloses automatic control motor stall when the super load operation of tool bit cuts off the moment input, plays the effect that lock pair converted products was treated in the protection, need not the manual work and judges. The utility model discloses an automatic stop electric screwdriver, simple and practical, convenient operation have improved processing production efficiency greatly.
Description
Technical field
The utility model relates to a kind of automatic stop electric screw driver.
Background technology
Electric screw driver is one of instrument producing assembly enterprise indispensability, and accurate lock is paid in operation and required electric screw driver stall immediately after screw is tightened, otherwise will affect the fixed effect of screw, even causes screw to skid, damages converted products.After in prior art, a lock pair operation completes, control motor stalling to place one's entire reliance upon artificial judgement, the operator lacked experience often cannot precisely control the opportunity of closing down motor, thus cause operation to produce a large amount of defective products, this type of electric screw driver cannot stall automatically, use inconvenience, production efficiency is lower.
Utility model content
Main purpose of the present utility model is to provide a kind of automatic stop electric screw driver, be intended to solve existing electric screw driver cannot stall automatically, use inconvenience, technical problem that production efficiency is lower.
For achieving the above object, the utility model proposes a kind of automatic stop electric screw driver, comprise the cutter head of one end with fixed part, the motor with drive division, master control borad and housing, described motor and master control borad are arranged in described housing, described motor and described master control borad are electrically connected, the spring assembly that described automatic stop electric screw driver also comprises flip flop equipment and is crimped on by the fixed part of described cutter head on the drive division of described motor, the drive division of described motor is provided with some wavy projections extended to outer by center; Described fixed part is provided with at least one free ball relative to the side of described drive division, and described free ball protrudes from described fixed part and is crimped on described motor driving part; Described spring assembly has first state of closing described flip flop equipment and second state of opening described flip flop equipment, when described free ball rolls at the trough of wavy projection, described spring assembly is in described first state, when described free ball crosses the crest of described wavy projection, described spring assembly is in described second state; Described flip flop equipment and described master control borad are electrically connected, and described master control borad, when described flip flop equipment is opened, controls described motor stalls.
Preferably, described spring assembly comprises spring base, Compress Spring, described spring base is removably connected to described housing one end towards described cutter head, and one end of described Compress Spring is fixed on described spring base, and the other end of described Compress Spring is fixed on outside described cutter head.
Preferably, described spring base has the first end removably connected with described housing and the second end be connected with described Compress Spring, the first end of described spring base and the through setting of the second end, and form a cavity, described fixed part, drive division are accommodated in the cavity of described spring base.
Preferably, also comprise plane bearing, described plane bearing is arranged between the cavity inner wall of described fixed part and described spring base.
Preferably, also regulating sleeve is socketed with outside described cutter head, the described other end of described Compress Spring is fixed in described regulating sleeve, and the first end outer of described spring base is provided with the threaded block with described regulating sleeve threaded adapter, and described regulating sleeve is connected with described spring base by described threaded block.
Preferably, described regulating sleeve outer wall is provided with anti-skidding burr.
Preferably, described flip flop equipment is arranged in the switch fixing hole that the corresponding described spring base first end in described housing outer offers, the central axis of described switch fixing hole and the centerline axis parallel of described cutter head.
Preferably, the position that described flip flop equipment to be included in described switch fixing hole thimble, magnet steel, back-moving spring and the corresponding described magnet steel arranged away from described spring base is gradually arranged at the sensor cluster composition on the outer wall of described switch fixing hole, one end of described thimble abuts with described spring base, the other end of described thimble contacts with described magnet steel, one end of described back-moving spring is fixed in described switch fixing hole, and the other end of described back-moving spring and described magnet steel are logical to be connected and fixed.
Preferably, described magnet steel is the kicker magnet of axial charging, and described switch fixing hole inwall is also provided with the protective sleeve of the described magnet steel of protection and back-moving spring.
Preferably, described sensor cluster is double-pole switch type Hall element.
The automatic stop electric screw driver that the utility model provides; cutter head duty is distinguished by the cooperation of the ball in screwdriver head fixing part and the corrugated lug on motor driving part; by spring assembly and flip flop equipment be engaged in cutter head overload operation time automatic control motor stall; cut-out moment inputs; play to protect and wait to lock the effect of paying converted products, without the need to artificial judgment.Automatic stop electric screw driver of the present utility model, simple and practical, easy to operate, substantially increase processing efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, the structure according to these accompanying drawings can also obtain other accompanying drawing.
The structural representation of automatic stop electric screw driver one embodiment that Fig. 1 provides for the utility model;
Fig. 2 is the partial enlarged drawing of switching part in the automatic stop electric screw driver shown in Fig. 1;
Fig. 3 is the part-structure enlarged drawing of the automatic stop electric screw driver shown in Fig. 1; Wherein main presentation flip flop equipment.
Drawing reference numeral illustrates:
| Label | Title | Label | Title |
| 1 | Cutter head | 11 | Fixed part |
| 2 | Motor | 21 | Drive division |
| 3 | Master control borad | 4 | Housing |
| 5 | Spring assembly | 51 | Compress Spring |
| 52 | Spring base | 6 | Flip flop equipment |
| 61 | Thimble | 62 | Magnet steel |
| 63 | Back-moving spring | 64 | Sensor cluster |
| 65 | Sheath | 7 | Free ball |
| 8 | Regulating sleeve | 9 | Threaded block |
| 10 | Plane bearing |
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Need explanation, all directionality instruction (such as up, down, left, right, before and afters in the utility model embodiment ...) only for explaining the relative position relation, motion conditions etc. under a certain particular pose (as shown in drawings) between each parts, if when this particular pose changes, then directionality instruction also correspondingly changes thereupon.
In addition, in the utility model, relate to the description of " first ", " second " etc. only for describing object, and instruction can not be interpreted as or imply its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In addition; technical scheme between each embodiment can be combined with each other; but must be can be embodied as basis with those of ordinary skill in the art; when technical scheme combination occur conflicting maybe cannot realize time will be understood that the combination of this technical scheme does not exist, also not the utility model require protection domain within.
The utility model provides a kind of automatic stop electric screw driver.
As shown in Figure 1, in the utility model embodiment, this automatic stop electric screw driver comprises cutter head 1, motor 2, master control borad 3 and housing 4, the output shaft that one end of cutter head 1 is connected with fixed part 11, motor 2 is socketed with drive division 21, motor 2 and master control borad 3 are arranged in housing 4, in addition, flip flop equipment 6 and the spring assembly 5 in order to the fixed part 11 of cutter head 1 end to be crimped on the drive division 21 on motor 2 output shaft is also comprised in this embodiment.Drive division 21 end face on motor 2 output shaft is arranged some corrugated lugs by centrally extending to outer, fixed part 11 is provided with at least one free ball 7 on a side of drive division 21, free ball 7 is given prominence to from fixed part 11 and is crimped on drive division 21, and free ball 7 can roll relatively between fixed part 11 with drive division 21.Roll between the corrugated lug of free ball 7 on drive division 21, then drive the relative housing 4 of fixed part 11, cutter head 1 and spring assembly 5 that certain displacement occurs; When free ball 7 rolls between the corrugated lug trough of drive division 21, spring assembly 5 has the first state; When free ball 7 crosses the corrugated lug crest of drive division 21, spring assembly 5 has the second state.When spring assembly 5 is in the first state, connected flip flop equipment 6 is in closed condition, and when spring assembly 5 is in the second state, connected flip flop equipment 6 is in opening.Flip flop equipment 6 and master control borad 3 are electrically connected and when flip flop equipment 6 is in opening, master control borad 3 controls motor 2 stall.
Particularly, the drive division 21 that motor 2 is socketed in when rotating on its output shaft rotates thereupon, because free ball 7 is crimped on drive division 21 end face by spring assembly 5, between free ball 7 and drive division 21, there is certain frictional force, this frictional force is ordered about fixed part 11 and is with dynamic cutter head 1 to rotate, and cutter head 1 drives screw tightening.
Along with tightening of screw, cutter head 1 needs larger driving moment, now the corrugated lug trough of free ball 7 on drive division 21 rolls to crest gradually, distance between fixed part 11 and drive division 21 shortens, frictional force increases, therefore drive the driving moment of cutter head 1 also to become large, now spring assembly 5 is in the first state, and connected flip flop equipment 6 is in closed condition.
After screw tightening puts in place, frictional force between ball 7 and drive division 21 is not enough to order about fixed part 21 and rotates, now free ball 7 can cross the crest of corrugated lug, corresponding with it, spring assembly 5 is in the second state and is opened by connected flip flop equipment 6, and after flip flop equipment 6 is opened, master control borad 3 controls motor 2 stall, after losing driving force, cutter head 1 is stall thereupon also.
The present embodiment utilizes such scheme; utilize the relative distance between free ball 7 and drive division 21 to identify the duty of cutter head 1 cleverly; by spring assembly 5 and flip flop equipment 6 be engaged in cutter head 1 overload operation time automatic control motor 2 stall; cut-out moment inputs; play to protect and wait to lock the effect of paying converted products, without the need to artificial judgment.Automatic stop electric screw driver of the present utility model, simple and practical, easy to operate, substantially increase processing efficiency.
Preferably, in above-described embodiment, spring assembly 5 comprises Compress Spring 51 and spring base 52, and spring base 52 bottom is removably connected to housing 4 towards cutter head 1 one end, and Compress Spring 51 one end is fixed on spring base 52, and the other end is fixed on outside cutter head 1.
Particularly, one end of Compress Spring 51 is fixed on the spring base 52 that removably connects with housing 4, cutter head 1 and connected fixed part 11 are pressed to the drive division of motor 2 by the Compress Spring 51 being in extended state, make fixed part 11 possess certain frictional force relative to drive division 21, realize motor 2 and drive cutter head 1 to rotate.
Preferably, spring base 52 has the first end be connected with housing 4 and the second end be connected with Compress Spring 51, spring base 52 first end and the second end are through setting and form a cavity, and the fixed part 11 of cutter head 1 and the drive division 21 of motor 2 are accommodated in the cavity of spring base 52.
Particularly; cutter head 1 is through spring base 52 and the drive division 21 of be fixed portion 11 and motor 2 is arranged in the cavity of spring base 52; this structure one can protect the drive disk assembly of electric screw driver, and two concealed structural designs make the structure compact more of electric screw driver.
Among above-described embodiment, wavy protruding quantity on drive division 21 is preferably identical with the quantity of free ball 7, in this embodiment, drive division 21 is evenly provided with the 3 wavy projections in road along radial direction, corresponding is convexly equipped with 3 free balls 7 on fixed part 11, rolls between the wavy convex area on drive division 21 of free ball 7 correspondence.
Wavy projection on drive division 21 and the quantity of free ball 7 all can be selected according to the actual requirements, and select quantity to be 3 in this embodiment, relative gusseted is more stable, can improve stability when cutter head 1 rotates.
Preferably, among technique scheme, can also select to be set with a plane bearing 10 between fixed part 11 and the inwall of spring base 52 cavity.By setting up plane bearing 10, cutter head 1 can be made to rotate more stable, improving working (machining) efficiency and converted products quality.
Preferably, among technique scheme, be also socketed with regulating sleeve 8 outside cutter head 1, Compress Spring 51 one end is fixed on inside regulating sleeve 8, and the other end is then fixed on spring base 52.Spring base 52 first end outer is provided with threaded block 9 simultaneously, and regulating sleeve 8 is provided with the screw thread with threaded block 9 adaptation, is threaded connection between regulating sleeve 8 and threaded block 9.
Regulating sleeve 8 can freely be locked to a certain extent or unclamp on threaded block 9, thus drive the elasticity of adjustment Compress Spring 51, then regulate the free ball 7 on fixed part 11 relative to the pressure of drive division 21, regulate the output torque of cutter head 1 within the specific limits, the demand of different working condition can be met.
As the improvement of technique scheme, can also have anti-skidding burr in the arranged outside of above-mentioned regulating sleeve 8, anti-skidding burr is more convenient in order to rotate user when regulating sleeve 8 regulates Compress Spring 51 degree of tightness.
Preferably, in technique scheme, corresponding spring base 52 first end position, front end, housing 4 outer is provided with a centerline axis parallel in the switch fixing hole of cutter head 1 central axis, and flip flop equipment 6 to be arranged in this switch fixing hole and to be electrically connected with master control borad 3.Flip flop equipment 6 is connected with spring assembly 5, is in opening and closing state by the displacement band driven triggering device 6 of spring assembly 5.
Particularly, the flip flop equipment 6 in such scheme comprises the sensor cluster 64 being arranged at switch fixing hole outer wall by the thimble 61 arranged away from spring base 52 gradually, magnet steel 62, back-moving spring 63 and corresponding magnet steel 62 position and forms.Wherein thimble 61 one end abuts with spring base 52, and the other end contacts with magnet steel 62, and back-moving spring 63 one end is connected in switch fixing hole, and the other end and magnet steel 62 are connected and fixed.
In this embodiment, due to the effect of back-moving spring 63, thimble 61 is stuck between magnet steel 62 and spring base 52 first end, and spring base 52 can be mobile among a small circle along with the flexible of Compress Spring 51, then magnet steel 62 is driven to move among a small circle in switch fixing hole, the movement of magnet steel 62 can cause the change of switch fixing hole internal magnetic field, and sensor cluster 64 senses that changes of magnetic field outputs signal to master control borad, thus realizes automatically closing down control to motor 2.
Particularly, rotate when motor 2 rotarily drives drive division 21, when drive division 21 rotates, wavy projection and free ball 7 produce and have a frictional force proportional with Compress Spring 51 current compression power, this frictional force band dynamic cutter head 1 rotates, cutter head 1 drives screw to rotate, when screw rotary torsion exceedes this frictional force, free ball 7 starts move to the wavy protruding crest direction of drive division 72 and compress Compress Spring 51, spring base 52 moves to Compress Spring 51 direction, now thimble 61 moves along with spring base 52, magnet steel 62 also moves with thimble 61, because sensor cluster 64 position does not change for fixing, after magnet steel 62 moves a certain distance, the magnetic field that sensor cluster 64 senses changes, sensor cluster 64 output signal level overturns and sends master control borad 3 to, now master control borad 3 can be judged to be moment propradation and keep motor 2 to rotate, now spring assembly 5 is in the first state, flip flop equipment 6 is in closed condition, when free ball 7 crosses the wave trough position that the wavy protruding crest of drive division 21 comes back to wavy projection, Compress Spring 51 starts resilience, spring base 52 and thimble 61, magnet steel 62 return simultaneously, when after magnet steel 62 return, the magnetic field that sensor cluster 64 senses changes, sensor cluster 64 output signal level overturns, now spring assembly 5 is in the second state, flip flop equipment 6 is opened, it is that output torque puts in place that master control borad 3 receives signal determining, master control borad 3 exports stop signal makes motor 2 close, and makes whole mechanism out of service.
Preferably; in above-mentioned technical scheme; magnet steel 62 is the kicker magnet of axial charging; on switch fixing hole inwall, be also provided with one deck protective sleeve 65 simultaneously; protective sleeve 65 is in order to protect magnet steel 62 and back-moving spring 63; prevent it from damaging after frequently moving, resetting, improve the service life of flip flop equipment 6.
Further, in this embodiment, sensor cluster 64 can be preferably double-pole switch type Hall element, because its sensitivity is higher, can meet performance requirement of the present utility model.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure transformation utilizing the utility model description and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. an automatic stop electric screw driver, comprise the cutter head of one end with fixed part, the motor with drive division, master control borad and housing, described motor and master control borad are arranged in described housing, described motor and described master control borad are electrically connected, it is characterized in that, the spring assembly that described automatic stop electric screw driver also comprises flip flop equipment and is crimped on by the fixed part of described cutter head on the drive division of described motor, the drive division of described motor is provided with some wavy projections extended to outer by center; Described fixed part is provided with at least one free ball relative to the side of described drive division, and described free ball protrudes from described fixed part and is crimped on described motor driving part; Described spring assembly has first state of closing described flip flop equipment and second state of opening described flip flop equipment, when described free ball rolls at the trough of wavy projection, described spring assembly is in described first state, when described free ball crosses the crest of described wavy projection, described spring assembly is in described second state; Described flip flop equipment and described master control borad are electrically connected, and described master control borad, when described flip flop equipment is opened, controls described motor stalls.
2. automatic stop electric screw driver as claimed in claim 1, it is characterized in that, described spring assembly comprises spring base, Compress Spring, described spring base is removably connected to described housing one end towards described cutter head, one end of described Compress Spring is fixed on described spring base, and the other end of described Compress Spring is fixed on outside described cutter head.
3. automatic stop electric screw driver as claimed in claim 2, it is characterized in that, described spring base has the first end removably connected with described housing and the second end be connected with described Compress Spring, the first end of described spring base and the through setting of the second end, and forming a cavity, described fixed part, drive division are accommodated in the cavity of described spring base.
4. automatic stop electric screw driver as claimed in claim 3, it is characterized in that, also comprise plane bearing, described plane bearing is arranged between the cavity inner wall of described fixed part and described spring base.
5. automatic stop electric screw driver as claimed in claim 2, it is characterized in that, also regulating sleeve is socketed with outside described cutter head, the described other end of described Compress Spring is fixed in described regulating sleeve, the first end outer of described spring base is provided with the threaded block with described regulating sleeve threaded adapter, and described regulating sleeve is connected with described spring base by described threaded block.
6. automatic stop electric screw driver as claimed in claim 5, it is characterized in that, described regulating sleeve outer wall is provided with anti-skidding burr.
7. automatic stop electric screw driver as claimed in claim 1, it is characterized in that, described flip flop equipment is arranged in the switch fixing hole offered bottom the corresponding described spring base in described housing outer, the central axis of described switch fixing hole and the centerline axis parallel of described cutter head.
8. automatic stop electric screw driver as claimed in claim 7, it is characterized in that, the position that described flip flop equipment to be included in described switch fixing hole thimble, magnet steel, back-moving spring and the corresponding described magnet steel arranged away from described spring base is gradually arranged at the sensor cluster composition on the outer wall of described switch fixing hole, one end of described thimble abuts with described spring base, the other end of described thimble contacts with described magnet steel, one end of described back-moving spring is fixed in described switch fixing hole, and the other end of described back-moving spring and described magnet steel are logical to be connected and fixed.
9. automatic stop electric screw driver as claimed in claim 8, it is characterized in that, described magnet steel is the kicker magnet of axial charging, and described switch fixing hole inwall is also provided with the protective sleeve of the described magnet steel of protection and back-moving spring.
10. automatic stop electric screw driver as claimed in claim 8, it is characterized in that, described sensor cluster is double-pole switch type Hall element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520707958.4U CN205021490U (en) | 2015-09-11 | 2015-09-11 | Automatic stop electric screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520707958.4U CN205021490U (en) | 2015-09-11 | 2015-09-11 | Automatic stop electric screwdriver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205021490U true CN205021490U (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520707958.4U Active CN205021490U (en) | 2015-09-11 | 2015-09-11 | Automatic stop electric screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205021490U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994766A (en) * | 2018-09-06 | 2018-12-14 | 厦门南旗佰特精密工具制造有限公司 | A kind of stepless retractable mechanism and stepless collapsible screwdriver |
| CN110944799A (en) * | 2017-07-24 | 2020-03-31 | 费斯托工具有限责任公司 | Power tool and method |
| WO2020248297A1 (en) * | 2019-06-12 | 2020-12-17 | 五邑大学 | Smart screw locking device based on torsion feedback |
-
2015
- 2015-09-11 CN CN201520707958.4U patent/CN205021490U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110944799A (en) * | 2017-07-24 | 2020-03-31 | 费斯托工具有限责任公司 | Power tool and method |
| CN110944799B (en) * | 2017-07-24 | 2021-11-26 | 费斯托工具有限责任公司 | Power tool and method |
| CN108994766A (en) * | 2018-09-06 | 2018-12-14 | 厦门南旗佰特精密工具制造有限公司 | A kind of stepless retractable mechanism and stepless collapsible screwdriver |
| WO2020248297A1 (en) * | 2019-06-12 | 2020-12-17 | 五邑大学 | Smart screw locking device based on torsion feedback |
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