CN201931412U - Mechanical adjustable torque screwdriver - Google Patents
Mechanical adjustable torque screwdriver Download PDFInfo
- Publication number
- CN201931412U CN201931412U CN2011200065811U CN201120006581U CN201931412U CN 201931412 U CN201931412 U CN 201931412U CN 2011200065811 U CN2011200065811 U CN 2011200065811U CN 201120006581 U CN201120006581 U CN 201120006581U CN 201931412 U CN201931412 U CN 201931412U
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- Prior art keywords
- screwdriver
- handle
- rod
- adjusting screw
- adjusting nut
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- Expired - Fee Related
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Abstract
The utility model relates to a mechanical adjustable torque screwdriver. A screwdriver bar (1) penetrates through an adjusting nut (2), an adjusting screw (4), a spring (6) and an inner hole of a lower ratchet wheel (7) and is arranged on a square hole of an upper ratchet wheel (8); the screwdriver bar (1) is integrated with the upper ratchet wheel (8); the excircle of the upper ratchet wheel (8) is in clearance fit with an inner hole of a handle (5); a gap is reserved between the screwdriver bar (1) and a small hole on the end face of the inner hole of the handle (5) close to a plane roller bearing (9); a connecting outer sleeve (3) is in threaded connection with the handle (5) and the outer diameters of the connecting outer sleeve (3) and the handle (5) are the same; a gap is reserved between an inner hole of the connecting outer sleeve (3) and the excircle of the adjusting nut (2); the end face of the inner hole of the connecting outer sleeve (3) is in contact with and is matched with the end face of the adjusting nut (2); one end of the adjusting screw (4) is mounted on the inner hole of the handle (5) and a guide boss is arranged in a guide slot of the handle; and the other end of the adjusting screw (4) with external threads is connected with internal threads of the adjusting nut (2).
Description
Technical field
The utility model relates to a kind of screwdriver.
Background technology
Screwdriver is a kind of instrument of holding screw commonly used.During traditional screwdriver holding screw, moment that applies and tightness tend to cause screw, screwdriver damage because of the moment that applies is excessive with people's sensation control, also can influence the installation of part or assembly quality even can destroy part.Therefore, also useful even twisting moment screwdriver and the moment of torsion screwdriver that has a moment table come holding screw, and moment of torsion is non-adjustable maybe to need to be equipped with deficiency such as torque meter but still exist.
Summary of the invention
The purpose of this utility model provides the screwdriver of the adjustable moment of torsion of a kind of mechanical type.
The utility model is the adjustable moment of torsion screwdriver of mechanical type, a screwdriver knife bar 1 is arranged, screwdriver knife bar 1
Afterbody be installed in and connect in the overcoat 3, the endoporus that screwdriver knife bar 1 passes adjusting nut 2, adjusting screw(rod) 4, spring 6 and bottom ratchet wheel 7 is installed on the cubic hole of ratchet 8; Screwdriver knife bar 1 becomes one with last ratchet 8, last ratchet 8 cylindricals and handle 5 endoporus are matched in clearance, screwdriver rod 1 is big matched in clearance with cooperating of adjusting nut 2, adjusting screw(rod) 4 and bottom ratchet wheel 7 endoporus, and aperture is leaving the gap by between the plane roller bearing 9 on screwdriver knife bar 1 and the handle 5 interior hole end surfaces; Adjusting nut 2 is threaded with adjusting screw(rod) 4 usefulness, and close end face all leaves the gap; The path one end cylindrical of adjusting nut 2 is provided with one and is used to regulate the knurled segment of the screwing length between adjusting screw(rod) 4 and the adjusting nut 2; Connect to adopt between overcoat 3 and the handle 5 and be threaded, both external diameters are identical, and connection overcoat 3 endoporus and adjusting nut 2 cylindricals leave the gap; Connect in the overcoat 3 the hole end surfaces cooperation that contacts with adjusting nut 2 end faces; Adjusting screw(rod) 4 one ends are installed on handle 5 endoporus and with guide ledges and put the handle gathering sill into, and adjusting screw(rod) 4 is connected with the internal thread of the externally threaded other end with adjusting nut 2.
Advantage and effect that the present invention compares with background technology are: can be by regulating the distance between adjusting nut 2, the adjusting screw(rod) 4, promptly regulate 7 pairs of bottom ratchet wheels and go up the thrust of ratchet 8 and the frictional force between the upper and lower ratchet, thereby reach the purpose of regulating moment of torsion by the reduction length of regulating spring.
Description of drawings
Fig. 1 is a structural representation of the present invention.Reference numeral and corresponding name are called: screwdriver knife bar 1, adjusting nut 2, connection overcoat 3, adjusting screw(rod) 4, handle 5, spring 6, bottom ratchet wheel 7, last ratchet 8, plane roller bearing 9, screwdriver knife bar sleeve 10.
The specific embodiment
As shown in Figure 1, the utility model is the adjustable moment of torsion screwdriver of a kind of mechanical type, and a screwdriver cutter is arranged
Bar 1, the afterbody of screwdriver knife bar 1 are installed in and connect in the overcoat 3, and the endoporus that screwdriver knife bar 1 passes adjusting nut 2, adjusting screw(rod) 4, spring 6 and bottom ratchet wheel 7 is installed on the cubic hole of ratchet 8; Screwdriver knife bar 1 becomes one with last ratchet 8, last ratchet 8 cylindricals and handle 5 endoporus are matched in clearance, screwdriver rod 1 is big matched in clearance with cooperating of adjusting nut 2, adjusting screw(rod) 4 and bottom ratchet wheel 7 endoporus, and aperture is leaving the gap by between the plane roller bearing 9 on screwdriver knife bar 1 and the handle 5 interior hole end surfaces; Adjusting nut 2 is threaded with adjusting screw(rod) 4 usefulness, and close end face all leaves the gap; The path one end cylindrical of adjusting nut 2 is provided with one and is used to regulate the knurled segment of the screwing length between adjusting screw(rod) 4 and the adjusting nut 2; Connect to adopt between overcoat 3 and the handle 5 and be threaded, both external diameters are identical, and connection overcoat 3 endoporus and adjusting nut 2 cylindricals leave the gap; Connect in the overcoat 3 the hole end surfaces cooperation that contacts with adjusting nut 2 end faces; Adjusting screw(rod) 4 one ends are installed on handle 5 endoporus and with guide ledges and put the handle gathering sill into, and adjusting screw(rod) 4 is connected with the internal thread of the externally threaded other end with adjusting nut 2.
As shown in Figure 1, have a gathering sill on the endoporus of handle 5, adjusting screw(rod) 4 and bottom ratchet wheel 7 minutes
Be not provided with guide ledges, the guide ledges of bottom ratchet wheel 7 is put the gathering sill of handle 5 into and is meshed with last ratchet 8, and the endoporus of adjusting screw(rod) 4 and bottom ratchet wheel 7 cylindricals and handle 5 adopts matched in clearance, adjusting screw(rod) 4 Hes
Bottom ratchet wheel 7 can axially move along gathering sill.
As shown in Figure 1, spring 6 is installed between adjusting screw(rod) 4 and the adjusting nut 2, and decrement is by adjusting
Screw rod 4 determines with the screwing length of adjusting nut 2, leaves the gap between the endoporus of the external diameter of spring 6 and handle 5.
As shown in Figure 1, the hook tooth of bottom ratchet wheel 7 and last ratchet 8 is meshing with each other, and the pressure of the field of conjugate action is by bullet
The decrement control of spring 6, last ratchet 8 and bottom ratchet wheel 7 are respectively equipped with the spiral engaging tooth that four left-hands rise.
As shown in Figure 1, plane roller bearing 9 is installed between handle 5 interior hole end surfaces and last ratchet 8 end faces.
As shown in Figure 1, screwdriver knife bar sleeve 10 combines with interference fit with an end of screwdriver knife bar 1,
Screwdriver knife bar sleeve 10 is provided with hexagonal hole with the cutter head abutting end, can match with dissimilar and driver bit specification.
As shown in Figure 1, screwdriver knife bar 1 is processed into rectangle with last ratchet 8 cooperation places.
As shown in Figure 1, when holding screw applies moment for clockwise handle 5, can regulate the pressure of two ratchet engaged faces and the size of frictional force by spring 6, adjusting nut 2, adjusting screw(rod) 4 according to the needed torque of screw to be tightened, under the effect of contraction of spring, 7 pairs of bottom ratchet wheels are gone up ratchet 8 and are produced thrust, the frictional force that moment of torsion mainly comes from this thrust and goes up bottom ratchet wheel, the size of these two power is all relevant with the decrement of spring 6.Therefore, the big I of moment of torsion is adjusted by the decrement of spring.Configuring under the situation of moment of torsion, when the moment of torsion that applies surpassed the value of setting, bottom ratchet wheel skidded automatically on the screwdriver, both can protect screwdriver, also can protect fastened screw to avoid damaging, and can also guarantee screw tightness unanimity.When needs unclamp the screw inhour when applying moment, two ratchets automatically lock, and the moment that applies is not influenced by the decrement of spring 6.
The course of work of the present utility model is as follows:
As shown in Figure 1:
One, adjusts moment of torsion
When needs increased moment of torsion, inhour rotation adjusting nut 2 made adjusting screw(rod) 4 compression springs 6, thereby the engagement force of bottom ratchet wheel 7 and last ratchet 8 is increased, and the moment that can bear during rotation also increases.In the time of need reducing moment of torsion, mode of operation is opposite with the increase moment of torsion.
Two, holding screw
When the handle 5 of giving screwdriver applies moment, handle 5 just passes torque to bottom ratchet wheel 7, bottom ratchet wheel 7 drives upward ratchet 8 rotations by the frictional force of thrust and upper and lower ratchet then, and last ratchet 8 and screwdriver rod 1 rotate simultaneously, and passing torque to needs fastening screw.
Three, protection screw and driver bit
After the decrement of spring 6 regulates; as the moment that applies is when surpassing the frictional force of last bottom ratchet wheel and 7 pairs of bottom ratchet wheels and going up the moment that thrust produced of ratchets 8; the moment of bottom ratchet wheel 7 can not pass to ratchet 8 and screwdriver knife bar 1; the engaging tooth of bottom ratchet wheel 7 and last ratchet 8 can skid and produce sound; thereby can protect driver bit, make fastened screw avoid damaging, can make the fastening tightness unanimity of screw of each identical function simultaneously.
Four, unclamp screw
When inhour applied moment for the handle 5 of screwdriver, last bottom ratchet wheel played shaft joint, applied moment and can not cause that going up bottom ratchet wheel skids.
Claims (7)
1. the adjustable moment of torsion screwdriver of mechanical type has a screwdriver knife bar (1), the afterbody of screwdriver knife bar (1)
Be installed in and connect in the overcoat (3), it is characterized in that the endoporus that screwdriver knife bar (1) passes adjusting nut (2), adjusting screw(rod) (4), spring (6) and bottom ratchet wheel (7) is installed on the cubic hole of ratchet (8); Screwdriver knife bar (1) becomes one with last ratchet (8), last ratchet (8) cylindrical and handle (5) endoporus are matched in clearance, screwdriver rod (1) is big matched in clearance with adjusting nut (2), adjusting screw(rod) (4) and cooperating of bottom ratchet wheel (7) endoporus, and aperture is leaving the gap by between the plane roller bearing (9) on screwdriver knife bar (1) and the interior hole end surface of handle (5); Adjusting nut (2) and adjusting screw(rod) (4) are with being threaded, and close end face all leaves the gap; The path one end cylindrical of adjusting nut (2) is provided with one and is used to regulate the knurled segment of the screwing length between adjusting screw(rod) (4) and the adjusting nut (2); Connect to adopt between overcoat (3) and the handle (5) and be threaded, both external diameters are identical, and connection overcoat (3) endoporus and adjusting nut (2) cylindrical leave the gap; Connect the cooperation that contacts with adjusting nut (2) end face of the interior hole end surface of overcoat (3); Adjusting screw(rod) (4) one ends are installed on handle (5) endoporus and with guide ledges and put the handle gathering sill into, and adjusting screw(rod) (4) is connected with the internal thread of the externally threaded other end with adjusting nut (2).
2. the adjustable moment of torsion screwdriver of mechanical type according to claim 1, it is characterized in that handle (5) in
Have a gathering sill on the hole, adjusting screw(rod) (4) and bottom ratchet wheel (7) are respectively arranged with guide ledges, down
The guide ledges of ratchet (7) is put the gathering sill of handle (5) into and is meshed adjusting screw(rod) with last ratchet (8)
(4) and the endoporus of bottom ratchet wheel (7) cylindrical and handle (5) adopt matched in clearance, adjusting screw(rod) (4) and
Bottom ratchet wheel (7) can axially move along gathering sill.
3. the adjustable moment of torsion screwdriver of mechanical type according to claim 1 is characterized in that spring (6) installation
Between adjusting screw(rod) (4) and adjusting nut (2), decrement is by adjusting screw(rod) (4) and adjusting nut (2)
Screwing length decision, leave the gap between the endoporus of the external diameter of spring (6) and handle (5).
4. the adjustable moment of torsion screwdriver of mechanical type according to claim 1, it is characterized in that bottom ratchet wheel (7) and
The hook tooth of last ratchet (8) is meshing with each other, and the pressure of the field of conjugate action is controlled by the decrement of spring (6), on
Ratchet (8) and bottom ratchet wheel (7) are respectively equipped with the spiral engaging tooth that four left-hands rise.
5. the adjustable moment of torsion screwdriver of mechanical type according to claim 1 is characterized in that plane roller bearing (9)
Be installed between interior hole end surface of handle (5) and last ratchet (8) end face.
6. the adjustable moment of torsion screwdriver of mechanical type according to claim 1, screwdriver knife bar sleeve (10) and spiral shell
The one end interference fit combination of silk cutter knife bar (1), screwdriver knife bar sleeve (10) is established with the cutter head abutting end
Hexagonal hole is arranged, can match with dissimilar and driver bit specification.
7. the adjustable moment of torsion screwdriver of mechanical type according to claim 1 is characterized in that screwdriver knife bar (1)
Be processed into rectangle with last ratchet (8) cooperation place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200065811U CN201931412U (en) | 2011-01-11 | 2011-01-11 | Mechanical adjustable torque screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200065811U CN201931412U (en) | 2011-01-11 | 2011-01-11 | Mechanical adjustable torque screwdriver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201931412U true CN201931412U (en) | 2011-08-17 |
Family
ID=44442951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200065811U Expired - Fee Related CN201931412U (en) | 2011-01-11 | 2011-01-11 | Mechanical adjustable torque screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201931412U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013143258A1 (en) * | 2012-03-26 | 2013-10-03 | 杭州巨星工具有限公司 | Screwdriver having adjustable torsion |
| CN104773547A (en) * | 2015-03-20 | 2015-07-15 | 安徽宏锦包装设备有限公司 | Material compressing device of full-automatic indentation die guillotine |
| CN105105839A (en) * | 2015-09-22 | 2015-12-02 | 杭州承诺医疗科技有限公司 | Medical torque screwdriver |
| CN108798306A (en) * | 2018-07-31 | 2018-11-13 | 宁波华德汽车零部件有限公司 | A kind of installation and adjustment structure of vehicle outer door knob |
| CN110239079A (en) * | 2019-07-24 | 2019-09-17 | 吉林大学 | Full-automatic sticking film for mobile phone equipment and method for adhering film |
-
2011
- 2011-01-11 CN CN2011200065811U patent/CN201931412U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013143258A1 (en) * | 2012-03-26 | 2013-10-03 | 杭州巨星工具有限公司 | Screwdriver having adjustable torsion |
| CN103358265A (en) * | 2012-03-26 | 2013-10-23 | 杭州巨星工具有限公司 | Adjustable torque screwdriver |
| CN103358265B (en) * | 2012-03-26 | 2016-06-15 | 杭州巨星工具有限公司 | Adjustable torque screwdriver |
| US9421675B2 (en) | 2012-03-26 | 2016-08-23 | Hangzhou Great Star Tools Co., Ltd. | Adjustable torque screwdriver |
| CN104773547A (en) * | 2015-03-20 | 2015-07-15 | 安徽宏锦包装设备有限公司 | Material compressing device of full-automatic indentation die guillotine |
| CN104773547B (en) * | 2015-03-20 | 2017-06-13 | 安徽宏锦包装设备有限公司 | The material hold-down gear of full-automatic impression mould guillotine |
| CN105105839A (en) * | 2015-09-22 | 2015-12-02 | 杭州承诺医疗科技有限公司 | Medical torque screwdriver |
| CN105105839B (en) * | 2015-09-22 | 2017-08-01 | 杭州承诺医疗科技有限公司 | A kind of medical torque screwdrivers |
| CN108798306A (en) * | 2018-07-31 | 2018-11-13 | 宁波华德汽车零部件有限公司 | A kind of installation and adjustment structure of vehicle outer door knob |
| CN110239079A (en) * | 2019-07-24 | 2019-09-17 | 吉林大学 | Full-automatic sticking film for mobile phone equipment and method for adhering film |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20140111 |