CN105437136A - Torque wrench - Google Patents
Torque wrench Download PDFInfo
- Publication number
- CN105437136A CN105437136A CN201610031132.XA CN201610031132A CN105437136A CN 105437136 A CN105437136 A CN 105437136A CN 201610031132 A CN201610031132 A CN 201610031132A CN 105437136 A CN105437136 A CN 105437136A
- Authority
- CN
- China
- Prior art keywords
- head
- slide bar
- sleeve pipe
- sleeve
- hole
- 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.)
- Granted
Links
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- 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
Abstract
The invention relates to the technical field of wrenches and discloses a torque wrench. The torque wrench comprises a sleeve and a head, wherein the head is used for sleeving and clamping a wrench head, a sliding rod is axially connected to the interior of the sleeve in a sliding mode, the sliding rod cannot come out of the sleeve, the end part of the sliding rod is hinged to the head, the hinged axis is perpendicular to the axis of the sleeve, the head is abutted with the end part of the sleeve, at least two support points positioned on both sides of a hinged shaft are arranged at the abutted position of the end part of the sleeve, an elastic part is arranged between the sliding rod and the sleeve, and the head is driven to be abutted with the end part of the sleeve by the sliding rod by virtue of the elastic force provided by the elastic part. According to the torque wrench, when a torque applied to pulling the sleeve is less than a set value, the head can be driven to rotate by the sleeve, so as to screw the wrench head; if the torque applied to pulling the sleeve exceeds the set value, the abutted position of the head and the sleeve is bent, so as to protect a screwed object, hear an alarm in a complex environment and determine whether the screwed object reaches pretightening force. The torque wrench has the advantages of simple structure and easiness in processing and manufacturing and can be miniaturized for medical purposes.
Description
Technical field
The present invention relates to spanner technical field, more specifically relate to a kind of medical torque spanner.
Background technology
Torque spanner is again torque wrench, torque spanner, moment of torsion adjustable spanner, is the one of spanner, is generally divided into two classes: electric twisting spanner and manual torque spanner.
Manual torque spanner is divided into again reading type torque spanner and preset torque spanner.
Preset torque spanner of the prior art has predetermined torque numerical value and sound device.During use, first set the torque value upper limit of what a needs, when the moment of torsion applied reaches setting value, spanner can send " Ka Ta " sound, and this does not want reinforcing again with regard to representative is fastening, and the prompting work of tightening completes.
Such as application number is 200920175144.5, and name is called that the Chinese invention patent of torque spanner discloses a kind of such torque spanner.
But this torque spanner can not use at bad environments and the large place of noise, because be difficult to the alarm song hearing that spanner sends, and damaged screws or spanner, or do not reach required pretightning force.
This external medical on torque spanner more miniaturized, this is more simple with regard to Structure of need, and torque spanner structure in this patent is too complicated, causes the more difficult processing of its parts to be assembled, is not suitable as medical equipment.
Summary of the invention
The object of the invention is, in order to overcome above-mentioned deficiency of the prior art, to provide the simple bendable torque spanner of a kind of structure.
The present invention is achieved through the following technical solutions above-mentioned purpose.
A kind of torque spanner, comprise sleeve pipe and the head for overlapping card driving end, slide bar has been in axial sliding connection in its middle sleeve, slide bar does not deviate from sleeve pipe, and it is hinged that slide bar end and head pass through jointed shaft, and the axle center of jointed shaft is vertical with casing axis, head and cannula tip offset, the place of offseting of cannula tip is at least and is positioned at each fulcrum in jointed shaft both sides, is provided with elastic component between slide bar and sleeve pipe, and the elastic force that elastic component provides forces slide bar to drive head to prop up cannula tip.
This programme pull sleeve pipe apply moment of torsion lower than setting value time, sleeve pipe can drive head rotation, and then turns driving end; If exceed setting value, there is bending in head and the sleeve pipe place of pulling that offsets, thus protection is by stubborn object, avoids cannot hearing alarm song in complex environment, cannot determine whether twisted object reaches pretightning force.This programme structure is simple, is easy to processing and fabricating, can be more miniaturized, to be applicable to medical aspect.
As further improvement, be provided with blind hole in above-mentioned sleeve pipe, blind via bottom is provided with the via hole that and diameter coaxial with blind hole is less than blind hole, and above-mentioned slide bar one end is provided with the axis hole of hole line and slide bar axis perpendicular, and the slide bar other end is provided with external screw teeth, slide bar runs through via hole and blind hole, slide bar is stuck in outside via hole with one end of axis hole, the external screw teeth threaded engagement of slide bar has knob, knob end is stretched in blind hole, above-mentioned elastic component is the Compress Spring be enclosed within outside slide bar, one end of Compress Spring heads on blind hole bottom surface, the other end heads on knob end, above-mentioned head by bearing pin and axis hole hinged, head is provided with the driving end jack of hole line and axis hole hole line parallel, pressure head is slidably connected in head, one end that pressure head is positioned at jack is provided with flange, flange front end stretches in jack, flange one side is facade, flange another side is inclined-plane, the pressure head other end is provided with the spring of drive ram top to jack.This programme extrudes Compress Spring by rotating knob, makes Compress Spring produce elastic deformation, thus presets the power that Compress Spring is applied to sleeve pipe; When the moment of torsion pulling sleeve pipe applying is less, sleeve pipe can drive head rotation to turn driving end; When pulling moment of torsion that sleeve pipe applies and being larger, namely reached certain value by the pretightning force of stubborn object, this value has exceeded the elastic anchorage force of Compress Spring, and bending occurs at head and the sleeve pipe place of pulling that offsets, and protects by stubborn object, thus determines that being twisted object reaches pretightning force.Flange on head inner ram is used for blocking driving end, and driving end generally adopts ratchet wrench head herein.When sleeve pipe applies screw-down torque, the facade of flange blocks hook tooth and tightens rotation to drive driving end; When sleeve pipe applies loosening torque, the inclined-plane of flange slips over hook tooth and driving end cannot be driven to rotate, and is adapted at little place, space and uses.
As further improvement, above-mentioned pressure head glide direction is consistent with the radial direction of jack, and preferably, in its natural state, the glide direction of above-mentioned pressure head is with sliding pole axis to identical, and namely head and sleeve pipe linearly type, takes up room little, easy to use, is convenient to preserve.
As further improvement, above-mentioned knob is provided with graduation mark and scale value, making scale value corresponding with pretension force value, during use, knob being rotated to corresponding scale value and just having set pretension force value, facilitating user to set use by calculating.
As further improvement, above-mentioned head and the end of sleeve pipe offset, and the place of offseting of head is plane, and the place of offseting of cannula tip is for being positioned at the arc convex of jointed shaft bilateral symmetry setting.
The present invention compared with prior art mainly has following beneficial effect: structure is simple, is easy to processing and fabricating, can be more miniaturized, to be applicable to medical aspect; There is bending after reaching pretightning force, protect by stubborn object, conveniently determine that being twisted object reaches pretightning force.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the embodiment of the present invention.
Fig. 2 is the cross-sectional view of embodiment of the present invention middle sleeve.
Fig. 3 is the cross-sectional view of the embodiment of the present invention.
Fig. 4 is the main TV structure schematic diagram of slide bar in the embodiment of the present invention.
Fig. 5 is the cross-sectional view of pressure head in the embodiment of the present invention.
Fig. 6 is the cross-sectional view of the embodiment of the present invention when bending state.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.Accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent.
In order to more succinct explanation the present embodiment, in accompanying drawing or explanation, some well known to a person skilled in the art but can omit to some extent with the incoherent parts of the main contents of this creation.In addition for ease of statement, in accompanying drawing, some parts has omission, zooms in or out, but does not represent size or the entire infrastructure of actual product.
Embodiment:
As shown in Figure 1, a kind of torque spanner, comprises and applies the sleeve pipe 1 of moment of torsion and the head 2 for overlapping card driving end for operator.
As shown in Figure 2, in sleeve pipe 1, be provided with blind hole 11, bottom blind hole 11, be provided with the via hole 12 that and diameter coaxial with blind hole 11 is less than blind hole 11.
As shown in Figure 3, a slide bar 3 runs through via hole 12 and blind hole 11.
As shown in Figure 3 and Figure 4, slide bar 3 one end is provided with the axis hole 31 of hole line and slide bar 3 axis perpendicular, and slide bar 3 other end is provided with external screw teeth 32; Slide bar 3 is stuck in outside via hole 12 with one end of axis hole 31, and external screw teeth 32 threaded engagement of slide bar 3 has knob 4, and knob 4 end is stretched in blind hole 11; Outside slide bar 3, cover has Compress Spring 5, and one end of Compress Spring 5 heads on the bottom surface of blind hole 11, and the other end heads on the end of knob 4.
Head 2 is hinged by bearing pin 6 and axis hole 31, head 2 is provided with the driving end jack 21 of hole line and axis hole 31 hole line parallel, pressure head 7 is slidably connected in head 2, in its natural state, the glide direction of pressure head 7 and the axial consistent of slide bar 3, namely head 2 and sleeve pipe 1 linearly type, take up room little, easy to use, be convenient to preserve.
Above described holes line is center line or the bus in hole.
As shown in Fig. 3, Fig. 4 and Fig. 5, one end that pressure head 7 is positioned at jack 21 is provided with flange 71, and flange 71 front end is stretched in jack 21, and flange 71 one side is facade, and flange 71 another side is inclined-plane, and pressure head 7 other end is provided with drive ram 7 and pushes up spring 8 to jack 21.
Head 2 and sleeve pipe 1 end offset, and the place of offseting of head 2 is plane, and the place of offseting of sleeve pipe 1 end is for being positioned at the arc convex 13 of bearing pin 6 bilateral symmetry setting.
Again as shown in Figure 1, knob 4 being carved with graduation mark and scale value, making scale value corresponding with pretension force value by calculating, rotate knob 4 during use and just set pretension force value to corresponding scale value, facilitate user to set use.
Driving end in the present embodiment adopts ratchet wrench head of the prior art, and the flange 71 on head 2 inner ram 7 is for blocking ratchet wrench head.When sleeve pipe 1 applies screw-down torque, the facade of flange 71 blocks hook tooth and tightens rotation to drive ratchet wrench head; When sleeve pipe 1 applies loosening torque, the inclined-plane of flange 71 slips over hook tooth, and ratchet wrench head cannot be driven to rotate, thus can be applicable to the little place use in space.
The present embodiment extrudes Compress Spring 5 by rotating knob 4, makes Compress Spring 5 produce elastic deformation, thus default Compress Spring 5 is applied to the power on sleeve pipe 1; When the moment of torsion pulling sleeve pipe 1 applying is less, sleeve pipe 1 can drive head 2 to rotate and turn driving end; When the moment of torsion pulling sleeve pipe 1 applying is larger; namely certain value is reached by the pretightning force of stubborn object; this value has exceeded the elastic anchorage force of Compress Spring; there is bending in head 2 and sleeve pipe 1 place of pulling that offsets; protection is by stubborn object; avoid cannot hearing alarm song in complex environment, thus determine that being twisted object reaches pretightning force.The present embodiment structure is simple, is easy to processing and fabricating, can be more miniaturized, to be applicable to medical aspect.
These are only a specific embodiment of the present invention, but design concept of the present invention is not limited thereto, all the present invention of utilization conceive the insubstantial modifications made the present invention, all fall within protection scope of the present invention.
Claims (6)
1. a torque spanner, comprise sleeve pipe (1) and the head (2) for overlapping card driving end, it is characterized in that, slide bar (3) has been in axial sliding connection in described sleeve pipe (1), sleeve pipe (1) do not deviate from by slide bar (3), slide bar (3) end and head (2) hinged by jointed shaft, the axle center of jointed shaft and sleeve pipe (1) axis perpendicular, head (2) offsets with the end of sleeve pipe (1), the place of offseting of sleeve pipe (1) end is at least and is positioned at each fulcrum in jointed shaft both sides, elastic component is provided with between slide bar (3) and sleeve pipe (1), the elastic force that elastic component provides forces slide bar (3) to drive head (2) to prop up the end of sleeve pipe (1).
2. torque spanner according to claim 1, it is characterized in that, blind hole (11) is provided with in described sleeve pipe (1), blind hole (11) bottom is provided with the via hole (12) that and diameter coaxial with blind hole (11) is less than blind hole (11), described slide bar (3) one end is provided with the axis hole (31) of hole line and slide bar (3) axis perpendicular, and slide bar (3) other end is provided with external screw teeth (32), slide bar (3) runs through via hole (12) and blind hole (11), slide bar (3) is stuck in via hole (12) outside with one end of axis hole (31), external screw teeth (32) threaded engagement of slide bar (3) has knob (4), knob (4) end is stretched in blind hole (11), described elastic component is for being enclosed within the Compress Spring (5) in slide bar (3) outside, one end of Compress Spring (5) heads on blind hole (11) bottom surface, the other end heads on knob (4) end, described head (2) is hinged by bearing pin (6) and axis hole (31), head (2) is provided with the driving end jack (21) of hole line and axis hole (31) hole line parallel, pressure head (7) is slidably connected in head (2), one end that pressure head (7) is positioned at jack (21) is provided with flange (71), flange (71) front end is stretched in jack (21), flange (71) one side is facade, flange (71) another side is inclined-plane, pressure head (7) other end is provided with the spring (8) of drive ram (7) top to jack (21).
3. torque spanner according to claim 2, is characterized in that, described pressure head (7) glide direction is consistent with the radial direction of jack (21).
4. torque spanner according to claim 3, is characterized in that, in its natural state, the glide direction of described pressure head (7) is axially identical with slide bar (3).
5. torque spanner according to claim 2, is characterized in that, described knob (4) is provided with graduation mark and scale value.
6. torque spanner according to claim 1, is characterized in that, described head (2) offsets with the end of sleeve pipe (1), and the place of offseting of head (2) is plane, and the place of offseting of sleeve pipe (1) end is for being positioned at the arc convex of jointed shaft bilateral symmetry setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610031132.XA CN105437136B (en) | 2016-01-18 | 2016-01-18 | A kind of torque spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610031132.XA CN105437136B (en) | 2016-01-18 | 2016-01-18 | A kind of torque spanner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105437136A true CN105437136A (en) | 2016-03-30 |
| CN105437136B CN105437136B (en) | 2017-03-29 |
Family
ID=55548008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610031132.XA Active CN105437136B (en) | 2016-01-18 | 2016-01-18 | A kind of torque spanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105437136B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107953289A (en) * | 2017-12-25 | 2018-04-24 | 杭州沈大侠教育咨询有限公司 | Torsion, which transfinites, warns spanner and the method using the spanner trip bolt |
| TWI706833B (en) * | 2019-11-08 | 2020-10-11 | 寶達精業股份有限公司 | Bending torque wrench |
| CN113618671A (en) * | 2021-08-26 | 2021-11-09 | 北京星英联微波科技有限责任公司 | Adjustable torque wrench for narrow space |
| US11660733B1 (en) | 2022-12-19 | 2023-05-30 | Nan Hu | Adjustable torque wrench for narrow spaces |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5497682A (en) * | 1995-07-10 | 1996-03-12 | Hsu; Frank | Torsion wrench |
| US5859371A (en) * | 1997-07-03 | 1999-01-12 | Hsieh; Chih-Ching | Spring device of a torque wrench |
| CN2850830Y (en) * | 2005-12-16 | 2006-12-27 | 童胜军 | Preset torque spanner |
| CN2882915Y (en) * | 2005-12-26 | 2007-03-28 | 罗庄元 | Preset bending torque spanner |
| CN205271873U (en) * | 2016-01-18 | 2016-06-01 | 广州市天鹰精密工具有限公司 | Torque wrench |
-
2016
- 2016-01-18 CN CN201610031132.XA patent/CN105437136B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5497682A (en) * | 1995-07-10 | 1996-03-12 | Hsu; Frank | Torsion wrench |
| US5859371A (en) * | 1997-07-03 | 1999-01-12 | Hsieh; Chih-Ching | Spring device of a torque wrench |
| CN2850830Y (en) * | 2005-12-16 | 2006-12-27 | 童胜军 | Preset torque spanner |
| CN2882915Y (en) * | 2005-12-26 | 2007-03-28 | 罗庄元 | Preset bending torque spanner |
| CN205271873U (en) * | 2016-01-18 | 2016-06-01 | 广州市天鹰精密工具有限公司 | Torque wrench |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107953289A (en) * | 2017-12-25 | 2018-04-24 | 杭州沈大侠教育咨询有限公司 | Torsion, which transfinites, warns spanner and the method using the spanner trip bolt |
| TWI706833B (en) * | 2019-11-08 | 2020-10-11 | 寶達精業股份有限公司 | Bending torque wrench |
| CN113618671A (en) * | 2021-08-26 | 2021-11-09 | 北京星英联微波科技有限责任公司 | Adjustable torque wrench for narrow space |
| US11660733B1 (en) | 2022-12-19 | 2023-05-30 | Nan Hu | Adjustable torque wrench for narrow spaces |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105437136B (en) | 2017-03-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A torque wrench Granted publication date: 20170329 Pledgee: Bank of China Limited by Share Ltd. Guangzhou Panyu branch Pledgor: GUANGZHOU TIANYING PRECISION TOOL CO.,LTD. Registration number: Y2024980001172 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |