CN103722519B - The moment of torsion tunable arrangement of screw rotating tool for a kind of hand - Google Patents
The moment of torsion tunable arrangement of screw rotating tool for a kind of hand Download PDFInfo
- Publication number
- CN103722519B CN103722519B CN201310689060.4A CN201310689060A CN103722519B CN 103722519 B CN103722519 B CN 103722519B CN 201310689060 A CN201310689060 A CN 201310689060A CN 103722519 B CN103722519 B CN 103722519B
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- external member
- tool
- torsion
- moment
- screw arbor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
- B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
- B25B23/1427—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by mechanical means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The present invention relates to the moment of torsion tunable arrangement of a kind of hand screw rotating tool, comprise and be fixedly installed on the transmission nut revolving in tool housing, the external member that is positioned at the differential screw arbor of this transmission nut inside and is sleeved on the end of this differential screw arbor and stretches out from revolving tool housing inner chamber, the two ends of differential screw arbor are equipped with thread segment, and this thread segment is meshed with the internal thread of transmission nut and external member respectively; The one end of engaging with external member on differential screw arbor is provided with reflects the digit groups of revolving tool output torque value, and external member is provided with the window that shows numeral in digit groups; One end that differential screw arbor engages with transmission nut is arranged with elastomeric element, and this elastomeric element is fixedly connected with sliding spring seat. In the time of differential bolt rotary, the compression degree of torsion spring changes, external member axially moves along front stifled inner surface, the numeral showing in the window of external member is the output torque limiting value of screw rotating tool, do not need torque dynamometer to know accurately and revolve the moment of torsion output stage limit value that tool is new, easy to operate.
Description
Technical field
The present invention relates to a kind of hand screw rotating tool, the adjustable dress of moment of torsion of screw rotating tool for especially a kind of handPut.
Background technology
In daily life and activity in production, often use various screw rotating tools, these revolve tool be byTorque transmission mechanism in handle, connecting rod, sleeve, handle and preset mechanism of torque composition, by people coupleHandle applies revolving force and reaches screwing or unscrewing of screw, still, and because screw has the utmost point that bears torsionLimit, if the torsion that operator applies screw is too large, will causes the screw of screw to damage and occur stripped threadPhenomenon. Therefore, existing screw rotating tool has a limit output torque on the market, screw rotating tool with wait to twistScrew fasten after, when moment of torsion screw rotating tool being applied as operator exceedes the torque limit of revolving tool, spiral shellThe connecting rod that nail revolves tool will automatically reset to new by the needle roller multistation axial clutch structure in housingPosition, thus prevent that the torsion that screw is applied is too large, cause screw stripped thread.
Certainly, can to control needle roller by the compression of torsion spring many for the output limit torque value of screw rotating toolAxial compressive force between needle roller and the steel ball of station axial clutch structure, by changing between needle roller and steel ballForce of sliding friction is realized the change of revolving tool output torque value, and the output torque value of existing screw rotating tool is being adjustedTime, after the compression degree of torsion spring changes, the moment of torsion output stage limit value that screw rotating tool is new need to pass through moment of torsionMeasuring appliance is measured, otherwise cannot know accurately and revolve the moment of torsion output stage limit value that tool is new, is screwing screwEven if know the size of the ultimate torque that screw bears in process, also and there will be revolve tool torque limit notReach, and the phenomenon of screw and stripped thread is brought inconvenience to work.
Summary of the invention
The object of the invention is in order to solve in prior art screw rotating tool in the time adjusting output torque limiting valueExisting defect, provides a kind of hand screw that can show accurately the output torque value of revolving after tool adjustmentRevolve the moment of torsion tunable arrangement of tool.
To achieve these goals, the technical solution used in the present invention is:
A moment of torsion tunable arrangement for screw rotating tool for hand, comprises and is fixedly installed on the transmission spiral shell revolving in tool housingMother, is positioned at the differential screw arbor of this transmission nut inside and is sleeved on the end of this differential screw arbor and revolves from describedThe external member that tool housing inner chamber stretches out, the two ends of described differential screw arbor are equipped with thread segment, this thread segment respectively withThe internal thread of described transmission nut and external member is meshed;
The one end of engaging with external member on described differential screw arbor is provided with reflects the digit groups of revolving tool output torque value,Described external member is provided with the window that shows numeral in described digit groups;
One end that described differential screw arbor engages with transmission nut is arranged with elastomeric element, this elastomeric element and cunningFlexible spring seat is fixedly connected with.
The moment of torsion tunable arrangement of screw rotating tool for above-mentioned a kind of hand, described elastomeric element is torsion spring.
The moment of torsion tunable arrangement of screw rotating tool for above-mentioned a kind of hand, described external member with described in revolve tool housingBetween opening, be provided with front blocking up, this front stifled the be fixed on front end that revolves tool housing the outside that is set in described external member.
The moment of torsion tunable arrangement of screw rotating tool for above-mentioned a kind of hand, described front stifled inside is provided with radially prolongsThe flange of stretching, the outside of described external member is provided with the axial notch matching with described flange, described poor in rotationWhen moving screw rod, described external member axially moves along described front stifled inner surface.
The moment of torsion tunable arrangement of screw rotating tool for above-mentioned a kind of hand, forms multiple numerals of described digit groupsOn the end of described differential screw arbor, being helix arranges.
The moment of torsion tunable arrangement of screw rotating tool for above-mentioned a kind of hand, described differential screw arbor two ends thread segmentPitch is unequal.
Moment of torsion tunable arrangement, described torsion spring and the described transmission spiral shell of screw rotating tool for above-mentioned a kind of handBetween mother, be provided with plane bearing.
Beneficial effect of the present invention is: this hand with on the differential screw arbor of the moment of torsion tunable arrangement of screw rotating tool withOne end of external member engagement is provided with reflects that the digit groups of revolving tool output torque value, external member are provided with in demonstration digit groupsThe window of numeral, in the time of differential bolt rotary, the compression degree of torsion spring changes, and external member is along frontStifled inner surface axially moves, and the numeral showing in the window of external member is the output torque utmost point of screw rotating toolLimit value, does not need torque dynamometer to know accurately and revolves the moment of torsion output stage limit value that tool is new, easy to operate.
Brief description of the drawings
Fig. 1 is the structural representation of place of the present invention screw rotating tool;
Fig. 2 is the explosive view of place of the present invention screw rotating tool;
Fig. 3 is the cutaway view of place of the present invention screw rotating tool;
Fig. 4 is the expanded view of differential screw arbor of the present invention end with the numeral cylinder of digit groups.
Detailed description of the invention
For making that architectural feature of the present invention and effect of reaching are had and further understand and be familiar with, in order toPreferred embodiment and accompanying drawing coordinate detailed explanation, are described as follows:
As shown in Figure 1, Figure 2, Figure 3 shows, the moment of torsion tunable arrangement of screw rotating tool for a kind of hand, comprises fixingBe arranged on the transmission nut 2 revolving in tool housing 1, be positioned at these transmission nut 2 inside differential screw arbor 3 andThe external member 4 that is sleeved on the end of this differential screw arbor 3 and stretches out from revolving tool housing 1 inner chamber, differential screw arbor 3Two ends are equipped with thread segment, and this thread segment is meshed with the internal thread of transmission nut 2 and external member 4 respectively;
The one end of engaging with external member 4 on differential screw arbor 3 is provided with reflects the digit groups of revolving tool output torque value,This digit groups is arranged on numeral cylinder 5, and numeral cylinder is fixed on differential screw arbor external member 4 and is provided with demonstration digit groupsThe window 6 of interior numeral;
Differential screw arbor 3 is arranged with elastomeric element with one end that transmission nut 2 engages, and this elastomeric element is preferredFor torsion spring 7, between torsion spring 7 and transmission nut 2, be provided with plane bearing 10, this torsion spring 7Be fixedly connected with sliding spring seat 8.
External member 4 and revolving is provided with front stifled 9 between the opening of tool housing 1, this front stifled 9 is fixed on and revolves tool housing 1Front end and be set in the outside of external member 4, front stifled 9 inside is provided with the flange radially extending, external member 4Outside is provided with the axial notch matching with flange, and front stifled 9 pairs of external members 4 have been carried out circumferential location, are rotatingWhen described differential screw arbor 3, external member 4 axially moves along front stifled 9 inner surface.
As shown in Figure 4, for the numeral of the window 6 interior demonstrations that ensure external member can show that screw revolves accuratelyThe output torque limiting value of tool, the pitch of differential screw arbor 3 two ends thread segments is unequal, in the present invention, poorThe pitch of the thread segment that moving screw rod 3 engages with transmission nut 2 is 1mm, the spiral shell of the thread segment engaging with external member 4Apart from being 2mm, multiple numerals of composition digit groups are helix row on the numeral cylinder 5 of the end of differential screw arbor 3Cloth, the numeral of digit groups is consistent with the characteristic curve value of torsion spring 7.
Also be provided with needle roller multistation axial clutch structure, needle roller multistation axle at the afterbody of sliding spring seat 8Comprise the ball support 11 being connected with sliding spring seat 8 to clutch structure, corresponding with ball support 11Needle roller base 12 and be fixedly connected with six side's actuating sleeves 13 with needle roller base, at six side's actuating sleeve 13 and needle rollersBetween base 12, be provided with button 14, be provided with tail-hood 15 at the afterbody that revolves tool housing 1, tail-hood 15 is by adjustingWhole nut 16 is connected with six side's actuating sleeves 13.
In the present invention, the connecting rod 17 of screw rotating tool inserts from the end of differential screw arbor 3, by revolving tool shellThe head of body 1 stretches into afterbody, until six side's bulbs of connecting rod 17 snap in six side's actuating sleeve 13 inner sidesTill in button 14, in the time that the output torque limiting value of connecting rod 17 need to be adjusted, fech connection bar 17,The inside that the head of screwdriver is extend into differential screw arbor 3 is corresponding with the breach of differential screw arbor 3 inside, logicalCross screwdriver and drive differential screw arbor 3 to rotate, differential screw arbor 3 with respect to transmission nut 2 to revolving tool housing 1When inner movement, because the position of the corresponding tail-hood 15 of sliding spring seat 8 is fixed, so, now,Differential screw arbor 3 must compress torsion spring 7, and torsion spring 7 makes ball support 11 and needle roller base 12Between axial compressive force increase, the force of sliding friction between needle roller and ball correspondingly increases, at differential screw arborIn 3 processes that move, because the front stifled 9 pairs of external members 4 that are set in its outside have been carried out circumferential location, external member4 axially move to the front end that revolves tool housing 1 with respect to differential screw arbor 3 along front stifled 9 inner surface, thisTime, accordingly, the numeral on the numeral cylinder 5 of differential screw arbor 3 ends is done phase on the window 6 of external member 4The variation of answering, the shown numeral of window 6 is screw rotating tool output torque limiting value now, is certainlyReduce the output torque limiting value of this screw rotating tool, rotate backward differential screw arbor 3, in external member 4The shown numeral of window 6 is the now output torque value of screw rotating tool.
Due to after this screw rotating tool assembled, in order to ensure to revolve actual output torque limiting value and the cover of toolOn part 4, the shown numeral of window 6 is consistent, need to be undertaken by the adjusting nut of tail-hood 15 1 sides 16Axially fine setting, until the numeral that window 6 shows is corresponding with the output torque value of revolving tool reality,The accuracy of torque adjustment after ensureing.
More than show and described general principle of the present invention, principal character and advantage of the present invention. The industryTechnical staff should understand, the present invention is not restricted to the described embodiments, in above-described embodiment and descriptionWhat describe is principle of the present invention, and the present invention also has without departing from the spirit and scope of the present inventionVarious changes and modifications, these changes and improvements all fall in claimed scope of the present invention. The present inventionThe protection domain requiring is defined by appending claims and equivalent thereof.
Claims (6)
1. a moment of torsion tunable arrangement for screw rotating tool for hand, comprises and is fixedly installed on the biography of revolving in tool housingMoving nut, be sleeved on the differential screw arbor of this transmission nut inside and be sleeved on the end of this differential screw arbor and fromDescribedly revolve the external member that tool housing inner chamber stretches out, it is characterized in that, the two ends of described differential screw arbor are equipped with screw threadSection, this thread segment is meshed with the internal thread of described transmission nut and external member respectively, described differential screw arbor two endsThe pitch of thread segment is unequal;
The one end of engaging with external member on described differential screw arbor is provided with reflects the digit groups of revolving tool output torque value,Described external member is provided with the window that shows numeral in described digit groups;
One end that described differential screw arbor engages with transmission nut is arranged with elastomeric element, this elastomeric element and cunningFlexible spring seat is fixedly connected with.
2. the moment of torsion tunable arrangement of screw rotating tool for a kind of hand according to claim 1, its feature existsIn, described elastomeric element is torsion spring.
3. the moment of torsion tunable arrangement of screw rotating tool for a kind of hand according to claim 1 and 2, its spyLevy and be, described external member and described in revolve and between the opening of tool housing, be provided with front stifledly, this front stifled being fixed on is revolved tool shellThe front end of body is also set in the outside of described external member.
4. the moment of torsion tunable arrangement of screw rotating tool for a kind of hand according to claim 3, its feature existsIn, described front stifled inside is provided with the flange radially extending, and the outside of described external member is provided with and described flange phaseThe axial notch coordinating, in the time rotating described differential screw arbor, described external member is done along described front stifled inner surfaceMove axially.
5. the moment of torsion tunable arrangement of screw rotating tool for a kind of hand according to claim 1, its feature existsIn, the multiple numerals that form described digit groups are helix and arrange on the end of described differential screw arbor.
6. the moment of torsion tunable arrangement of screw rotating tool for a kind of hand according to claim 2, its feature existsIn, between described torsion spring and described transmission nut, be provided with plane bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310689060.4A CN103722519B (en) | 2013-12-16 | 2013-12-16 | The moment of torsion tunable arrangement of screw rotating tool for a kind of hand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310689060.4A CN103722519B (en) | 2013-12-16 | 2013-12-16 | The moment of torsion tunable arrangement of screw rotating tool for a kind of hand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103722519A CN103722519A (en) | 2014-04-16 |
| CN103722519B true CN103722519B (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310689060.4A Active CN103722519B (en) | 2013-12-16 | 2013-12-16 | The moment of torsion tunable arrangement of screw rotating tool for a kind of hand |
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| CN (1) | CN103722519B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681412B (en) * | 2016-08-01 | 2019-03-29 | 北京遥感设备研究所 | A kind of radio frequency (RF) coaxial connector assembly tool with torque |
| TWI692390B (en) * | 2018-09-11 | 2020-05-01 | 美之嵐機械工業有限公司 | Torque display device of mechanical gas-electric screwdriver |
| CN111846100B (en) * | 2019-04-30 | 2022-08-16 | 广东顺德顺泰智能运动器材有限公司 | Rear chain shifter of bicycle |
| TWI813423B (en) * | 2022-08-19 | 2023-08-21 | 勝圓興茂有限公司 | torque wrench |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4063474A (en) * | 1975-11-06 | 1977-12-20 | Dresser Industries, Inc. | Torque limiting screwdriver |
| US4774864A (en) * | 1985-07-11 | 1988-10-04 | Facom | Dynamometric screw-driver |
| CN2836998Y (en) * | 2005-08-30 | 2006-11-15 | 王俊富 | A screw drive capable of setting torsion force |
| CN201881328U (en) * | 2010-11-10 | 2011-06-29 | 义成工厂股份有限公司 | Screwdriver torque adjusting structure |
-
2013
- 2013-12-16 CN CN201310689060.4A patent/CN103722519B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4063474A (en) * | 1975-11-06 | 1977-12-20 | Dresser Industries, Inc. | Torque limiting screwdriver |
| US4774864A (en) * | 1985-07-11 | 1988-10-04 | Facom | Dynamometric screw-driver |
| CN2836998Y (en) * | 2005-08-30 | 2006-11-15 | 王俊富 | A screw drive capable of setting torsion force |
| CN201881328U (en) * | 2010-11-10 | 2011-06-29 | 义成工厂股份有限公司 | Screwdriver torque adjusting structure |
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| Publication number | Publication date |
|---|---|
| CN103722519A (en) | 2014-04-16 |
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Address after: 315000 Fengcheng village, jishigang Town, Haishu District, Ningbo City, Zhejiang Province Patentee after: NINGBO DECHENG TOOLS Co.,Ltd. Address before: 315000 Fengcheng village, jishigang Town, Yinzhou District, Ningbo City, Zhejiang Province Patentee before: NINGBO DECHENG TOOLS Co.,Ltd. |