CN2393690Y - Self-stopping electric screw driver with limited torque - Google Patents
Self-stopping electric screw driver with limited torque Download PDFInfo
- Publication number
- CN2393690Y CN2393690Y CN 99253147 CN99253147U CN2393690Y CN 2393690 Y CN2393690 Y CN 2393690Y CN 99253147 CN99253147 CN 99253147 CN 99253147 U CN99253147 U CN 99253147U CN 2393690 Y CN2393690 Y CN 2393690Y
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- CN
- China
- Prior art keywords
- gland
- moment
- colligator
- torsion
- automatic stop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model provides a fixed torsional moment automatic-stopping electric screwdriver, mainly comprising a screwdriver bit, a screwdriver bit clamping device, an electric appliance control assembly, a gear decelerating mechanism, etc. A fixed torsional moment automatic-stopping mechanism is arranged between the screwdriver bit clamping device and the gear decelerating mechanism, and is mainly composed of a force-adjusting pressure rod, a force-adjusting sheath, a front casing body, an upper coupler, a lower coupler, a microswitch, pins, pressure sheaths, etc. The purpose that a fixed torsional moment automatically stops when screws are assembled is obtained through the fact that the force-adjusting pressure rod, the upper pressure sheath, the lower pressure sheath, the pressure sheath, a force-adjusting spring and a top plate tightly press a ball to make the ball produce moment variation by tripping on the inclined plane of an upper claw of the lower coupler and through the control of the connection of the microswitch and a power supply by the pressure sheaths and the pins, etc. Thus, the precision of the torsional moment of the screws can be improved to reduce the surface damage of the screws and parts.
Description
The utility model relates to a kind of electric tool, particularly a kind ofly decides moment of torsion automatic stop type electric screw driver.
Use maximum electric screw drivers to be roughly two kinds at present on television set, electronic apparatus, computer, instrument and meter and the automobile and other industries assembly line: a kind of is low pressure braking type electric screw driver, the clamp load torque of its screw is to lean on the braking moment of direct current generator to realize, and moment can not be adjusted, because very big countertorque is arranged during motor braking, operator's wrist is easily caused damage; Second kind is by the clutch mechanism slipping type, it is after screw means, the claw clutch of spring compression skids, moment of torsion is controlled by the size of adjusting spring pressure, but it is very inaccurate, whenever tighten screw one time, from slipping of clutch to the impact moment maximum, moment differs and reaches one times approximately, so slipping of clutch asynchronism(-nization), the clamp load torque of screw are also different, and this time is difficult to control by the operator, the notch that skids to screw of the machinery of clutch all has damage in addition, loses control of the panel that will scratch product sometimes.
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art part, and a kind of moment of torsion automatic stop type electric screw driver of can deciding in operation is provided.
The utility model is realized by following measure: deciding moment of torsion automatic stop type electric screw driver is by spiral shell cutter head, spiral shell cutter head gripping mechanism.Electrical equipment control assembly and gear reduction constitute; between gear reduction and spiral shell cutter head gripping mechanism, be provided with certain moment of torsion self-stopping gear; realize the purpose that assembling screw decide the moment of torsion automatic stop by this mechanism, decide the moment of torsion self-stopping gear and be by accent defeat bar, transfer the power cover, procapsid, upward colligator, microswitch, following colligator, center pedestal, ball gland, upper and lower gland and top board, force-regulating spring constitute.
The procapsid outer wall of deciding the moment of torsion self-stopping gear is shaped on screw thread; the one end is connected with the power of accent external threading; axially have several through holes at the procapsid leading section; accent is defeated bar and firmly is located at last gland in the procapsid through this hole and by a crown; last gland is pushed down gland by force-regulating spring; gland down is close on gland endoporus plane, compresses top board by ball, and last colligator and the ball that is located in its two side holes are slidingly connected with following colligator.
One side plane of center pedestal is provided with the microswitch that is connected with integrated package with power switch and compresses the pin of microswitch shell fragment, and the other end of pin contacts with the end face of gland, and is compressed by gland.
Deciding the moment of torsion self-stopping gear is connected by descending flat hole, colligator center to be tight with the flat axle in secondary frame upper end of gear reduction.
Description of drawings:
Fig. 1 is the utility model overall structure schematic diagram.
Among the figure: 1 spiral shell cutter head 2 cover strand back-up rings, 3 covers strand 4 balls, 5 cover strand stage clips, 6 copper sheathings 7 are transferred and are defeated bar 8 accent power and overlap on 9 procapsids 10 at the bottom of the female 12 spiral shell cutter shells of colligator 11 lockings female 31 switch handles, 32 integrated packages of 13 loam cakes, 14 reduction box casings, 15 one-level framves, 16 pins, 17 connectors, 18 motors, 19 electric capacity, 20 connecting lead wires, 21 trip bolts, 22 reversing switches, 23 rectifier bridge silicon, 24 power supply buttock lines, 25 power supply sheaths, 26 spiral shell cutter head gripping mechanisms, 27 electrical equipment control assemblies, 28 straight pins, 29 power switches, 30 inserts 33 garden chapiter screws 34 handgrip springs 35 primary centres and take turns on 51 times glands of 36 gear reduction 37 planet pins, 38 mandrel 39 planetary gears, 40 secondary frame 41 ring gears, 42 screw 43 microswitches, 44 central shaft bracket 45 pins, 46 rolling bearings 47 times colligators, 48 ball 49 balls, 50 glands, 52 check rings, 53 top boards, 54 force-regulating springs 55 gland 56 and decide the moment of torsion self-stopping gear
Below in conjunction with accompanying drawing the utility model is described further: as shown in Figure 1; deciding moment of torsion automatic stop type electric screw driver is by spiral shell cutter head 1; at the bottom of the spiral shell cutter shell 12; loam cake 13; spiral shell cutter head gripping mechanism 26; electrical equipment control assembly 27; gear reduction 36 and the moment of torsion self-stopping gear 56 of deciding that is arranged between spiral shell cutter head gripping mechanism and the gear reduction constitute; spiral shell cutter head gripping mechanism comprises cover strand back-up ring 2; cover thigh 3; ball 4; cover strand stage clip 5 and locking female 11; the electrical equipment control assembly comprises micro machine 18; electric capacity 19; connect lead-in wire 20; trip bolt 21; reversing switch 22; rectifier bridge silicon 23; power line 24; power supply sheath 25; power switch 29; straight pin 28; switch handgrip 31 and integrated package 32 handgrip springs 34, outside connected switch power pack or power transformer are 24V safe voltage and by the power source of said elements as this electric screw driver with civil power 220V step-down.Gear reduction 36 is to be made of reduction box housing 14, one-level frame 15, primary centre wheel 35, planet pin 37, mandrel 38, planetary gear 39, secondary frame 40, ring gear 41 and screw 42, and gear reduction is connected with the electrical equipment control assembly with fillister head screw 33 by connector 17.Decide moment of torsion self-stopping gear 56 and defeat bar 7 by accent; accent power cover 8; procapsid 9; last colligator 10; microswitch 43; center pedestal 44; following colligator 47; ball 48; 49; gland 50; following gland 51; check ring 52; top board 53 force-regulating springs 54 reach goes up gland 55 formations; described procapsid outer wall is shaped on screw thread; one end and accent power cover 8 are threaded in the procapsid leading section and axially have 4 through holes; defeat with the accent of its equal number that bar 7 runs through through hole and withstand the last gland 55 that is located in the procapsid by follower head; last gland is pushed down gland 50 by force-regulating spring 54 and check ring 52; gland 51 down is close on gland endoporus plane; compress top board 53 by ball 49, last colligator 10 and be located at ball 48 in its two side holes and be with following colligator and be slidingly connected.One side plane of center pedestal 44 is provided with microswitch 43 that is connected with integrated package 32 with power switch 29 and the pin 45 that compresses the microswitch shell fragment, and the other end of pin 45 contacts with the end face of gland 50, and is compressed by gland.Deciding the moment of torsion self-stopping gear closely is connected with the flat axle in secondary frame upper end of gear reduction by following flat hole, colligator 47 centers.
The control of electric screw driver clamp load torque is to adjust up and down along screw thread by scale by the accent power cover 8 that usefulness is threaded on the procapsid 9, by accent defeat bar 7, go up gland 55, force-regulating spring 54, gland 50, gland 51, top board 53 compress ball 48 and make it and combine upper lackeves inclined-plane dropout by force down down, moment changes, and realizes adjusting the purpose of screw means moment.
The realization that the utility model is decided the moment of torsion automatic stop is to push down pin 45 by gland 50, make pin 45 push down microswitch 43, this moment, microswitch and Switching Power Supply and the integrated package 32 that cuts off the power supply automatically were connection status, when screw reaches setpoint torque, the cat's paw inclined-plane of following colligator 47 will promote ball 48 upwards, and gland 51 glands 50 lifted thereupon under ball jack-up top board 53 drove, and gland lifts the pin 45 of pushing down microswitch, make the microswitch power cutoff, electric screw driver quits work.
The utility model has the advantages that the new structure that has adopted electromechanical integration, by machinery action and Electronic Control are had Combining of machine, when making screw reach setpoint torque, can automatically control and cut off the electricity supply, therefore can greatly improve The accuracy of screw torque, uniformity, thus the in addition reliability of part assembling guaranteed, taken this to reduce screw and other part Draw and hinder, and can avoid operator's wrist damage.
Claims (4)
1. decide moment of torsion automatic stop type electric screw driver for one kind; mainly be by spiral shell cutter head (1); spiral shell cutter head gripping mechanism (26) electrical equipment control assembly (27) and gear reduction (36) constitute; it is characterized in that being provided with certain moment of torsion automatic stop type mechanism (56) between spiral shell cutter head gripping mechanism (26) and the gear reduction (36); realize the purpose of assembling screw control torque automatic stop by this mechanism; deciding the moment of torsion self-stopping gear is to defeat bar (7) by accent; accent power cover (8); procapsid (9); last colligator (10); microswitch (43); pin (45), center pedestal (44); following colligator (47); ball (48) (49); gland (50); following gland (51); force-regulating spring (54); top board (53) reaches goes up gland (55) formation.
2. according to claim 1ly decide moment of torsion automatic stop type electric screw driver, it is characterized in that procapsid (9) outer wall is shaped on screw thread, the one end is threaded with transferring power cover (8), be axially arranged with a plurality of through holes at the procapsid leading section, accent is defeated bar (7) and is run through this Kong Bingyi crown and firmly be located at last gland (55) in the procapsid, push down gland (50) by force-regulating spring (54), gland (51) down is close on gland endoporus plane, compress top board (53) by ball (49), last colligator (10) and be located at ball (48) and following colligator in its two side holes and be and be slidingly connected.
3. according to claim 1ly decide moment of torsion automatic stop type electric screw driver, a side plane that it is characterized in that center pedestal (44) is provided with microswitch (43) that is connected with integrated package (32) with power switch (29) and the pin (45) that compresses the microswitch shell fragment, the other end of pin contacts with the end face of gland, and is compressed by gland.
4, according to claim 1ly decide moment of torsion automatic stop type electric screw driver, it is characterized in that deciding moment of torsion self-stopping gear (56) and closely be connected with flat of secondary frame (40) upper end of gear reduction by flat hole, colligator (47) center down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99253147 CN2393690Y (en) | 1999-11-12 | 1999-11-12 | Self-stopping electric screw driver with limited torque |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99253147 CN2393690Y (en) | 1999-11-12 | 1999-11-12 | Self-stopping electric screw driver with limited torque |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2393690Y true CN2393690Y (en) | 2000-08-30 |
Family
ID=34037117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99253147 Expired - Fee Related CN2393690Y (en) | 1999-11-12 | 1999-11-12 | Self-stopping electric screw driver with limited torque |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2393690Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357858A (en) * | 2011-10-14 | 2012-02-22 | 无锡麦克马丁定扭矩装配工具有限公司 | Electronic air-break type pneumatic tool |
| CN112536755A (en) * | 2020-12-04 | 2021-03-23 | 国网山东省电力公司烟台供电公司 | Power transmission and transformation high-voltage electrified bolt fastener capable of remotely controlling torque force |
-
1999
- 1999-11-12 CN CN 99253147 patent/CN2393690Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357858A (en) * | 2011-10-14 | 2012-02-22 | 无锡麦克马丁定扭矩装配工具有限公司 | Electronic air-break type pneumatic tool |
| CN112536755A (en) * | 2020-12-04 | 2021-03-23 | 国网山东省电力公司烟台供电公司 | Power transmission and transformation high-voltage electrified bolt fastener capable of remotely controlling torque force |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |