CN107486805A - A kind of detectable formula torque spanner - Google Patents
A kind of detectable formula torque spanner Download PDFInfo
- Publication number
- CN107486805A CN107486805A CN201710938665.0A CN201710938665A CN107486805A CN 107486805 A CN107486805 A CN 107486805A CN 201710938665 A CN201710938665 A CN 201710938665A CN 107486805 A CN107486805 A CN 107486805A
- Authority
- CN
- China
- Prior art keywords
- mandrel
- wall
- axle sleeve
- teeth groove
- main part
- 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.)
- Pending
Links
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
- B25B13/00—Spanners; Wrenches
- B25B13/48—Spanners; Wrenches for special purposes
- B25B13/50—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Prostheses (AREA)
Abstract
The present invention relates to the technical field of medical instrument,It is related to a kind of detectable formula torque spanner,Mandrel including axle sleeve and with axle sleeve rotation connection,Centre bore is offered on the bottom surface of axle sleeve,Mandrel and centre bore rotation connection,The axis hole for being easy to that the operation tip of medical workpiece is interspersed interior and is rotated coaxially with mandrel is offered on the mandrel,The top of the mandrel is stretched out centre bore and fixed by snap ring and snap ring pad,The elastic torsion part rotated coaxially with it is arranged with mandrel,Elastic torsion part is placed on axle sleeve bottom surface,Elastic torsion part includes the main part with an opening and two shell fragments being placed on the avris of main part two,Main part is arranged on mandrel through its opening,Uniform at least three double wedge on the internal perisporium of axle sleeve bottom surface,Being formed between adjacent two double wedge has teeth groove,The curved shape of shell fragment,Being formed on the end of shell fragment has stop part,The two side that stop part stretches into teeth groove with teeth groove contradicts,The present invention is rational in infrastructure simple,It is practical,Constant torque.
Description
Technical field
The present invention relates to the technical field of medical instrument, more specifically, it relates to a kind of detectable formula torque spanner.
Background technology
At present, cleaned one's teeth apparatus industry in medical treatment, clean one's teeth, the preparation work point of cavities by be threadably mounted at clean one's teeth, cavities
On the screw thread of preparation work point handle front end, by hygienic requirements, clean one's teeth, cavity producing work tip does not allow to be held by hand holding handling,
And can only be by instrument such as spanner.The back-up wrench of early application is a rotor, and rotor center opens up and operation tip spanner
The square opening that position coordinates, after square opening is fastened in operation tip spanner position, forward and backward back-up wrench, realizes the installation and removal of operation tip.
In-convenience in use part installs strength for bad control, installation may be damaged the back-up wrench of early stage entirely with feel when strength is big
Hinder operation tip, or the screw thread of damage operation tip tiller grip, reduce the life-span of operation tip and handle.
Patent No. 201610281236.6 disclosed a kind of limit suitable for a variety of prophy devices on the 24th in August in 2016
Torque wrench, the invention is uniformly arranged multiple fins using sleeve lining or multiple arcs groove circumference uniformly continuous is distributed the tooth to be formed
Each rotating vane end elasticity is touched to set the preset frictional force of needs on shape engaging groove, with elastic-friction impeller, is entered
And the constant-torque for limiting operation tip is formed, operation tip can be easily installed on the handle of tooth-cleaning machine, without load
The heart when tightening whether can damaged screw misgivings.
Above-mentioned technology in actual use, due among sleeve lining be used for and rotating vane elasticity contradict engagement
Groove is deep-slotted chip breaker, and the frictional force that the structure plays is smaller, and the quantity of rotating vane excessively causes it by the anti-of twisting resistance
During active force, rotating vane can produce deformation, and then cause to play operation tip limitation capability is reduced, last rotating vane with
Deep-slotted chip breaker reverse contradict during be in the presence of skidding, finally result in operation tip assembling it is unstable, add potential safety hazard；
After in the hole slot of operation tip insertion shaft core, hole slot plays the purpose of clamping operation tip, is utilized in above-mentioned documents in hole slot
Interior installation sealing ring, which is realized, prevents operation tip from sliding, and the effect plays in actually using needs regular replacing, due to its by
Into the extruding twist process of operation tip, structure is easily deformed, and its to play anti-skidding effect also undesirable.
The content of the invention
In view of the deficienciess of the prior art, it is rational in infrastructure simple it is an object of the invention to provide one kind, it is practical,
The detectable formula torque spanner of constant torque.
To achieve the above object, the invention provides following technical scheme：
A kind of detectable formula torque spanner, including axle sleeve and the mandrel with axle sleeve rotation connection, in offering on the bottom surface of axle sleeve
Heart hole, mandrel and centre bore are rotatablely connected, and are offered on the mandrel and are easy to the operation tip of medical workpiece interspersed interior and with mandrel
The axis hole rotated coaxially, the top of the mandrel are stretched out centre bore and fixed by snap ring and snap ring pad,
The elastic torsion part rotated coaxially with it is arranged with mandrel, elastic torsion part is placed on axle sleeve bottom surface, elastic torsion part
It is arranged including the main part with an opening and two shell fragments being placed on the avris of main part two, main part through its opening on mandrel,
Uniform at least three double wedge on the internal perisporium of axle sleeve bottom surface, forming between adjacent two double wedge has teeth groove, the curved shape of shell fragment, bullet
Being formed on the end of piece has stop part, and the two side that stop part stretches into teeth groove with teeth groove contradicts.
The present invention is further arranged to：The two side of the teeth groove is respectively to cater to wall and positionable wall, caters to wall and positioning
Wall is oblique, and it is 110-120 ° to cater to wall relative to teeth groove bottom land angle of inclination, and positionable wall tilts relative to teeth groove bottom land
Angle is 95-100 °.
By using above-mentioned technical proposal, during the stop part of two shell fragments and tooth Elastic Contact, by operation tip
Twisting resistance, it can be rotated with mandrel relative to axle sleeve, stop part, which can head on, caters to wall and in its slip, when catering to wall relative to groove
Slanted floor angle is arranged to 110-120 °
The present invention is further arranged to：Two positioning holes are axially penetrated through on the mandrel, two positioning holes extend through axis hole
Both sides inwall, two positioning holes coordinate contradicts U-shaped fastener inserted with one and operation tip, is formed between the input of two positioning holes limited
Position blend stop, spacing blend stop end face are less than the opening of positioning hole, and the two pins of the U-shaped fastener insert from two positioning holes respectively
Afterwards, contradict its arc-shaped curvature portion and spacing blend stop.
By using above-mentioned technical proposal, using U-shaped fastener, further the operation tip of mandrel is stretched into locking, U-shaped fastener and
The end face that operation tip contradicts is burnishing surface, increases the contact area with operation tip, and then improves the friction system of both contacts
Number, improve the Assembly stability of operation tip.The setting of spacing blend stop in order to improve U-shaped fastener assembling stability.
When, mandrel relative to axle sleeve rotate caused by elastic torsion power effect it is optimal.Positionable wall is set equivalent to vertical
Right angle is in order that prevent the reverse of mandrel.
The present invention is further arranged to：One corresponding both sides outer wall of the mandrel is flat end face, wherein a flat end face
On open up fluted, the curved shape of groove cell wall, another two, which corresponds to, on mandrel offers in side wall for snap ring and snap ring pad
The neck that piece is caught in.
By using above-mentioned technical proposal, the main body part constructions among two flat end faces and elastic torsion part on mandrel are fitted
Match somebody with somebody, substantially increase the stability that elastic torsion part is sheathed on outside mandrel, the setting of the neck on mandrel realizes snap ring and card
The Assembly stability that ring pads piece plays.
The present invention is further arranged to：The angle of the main part correspond to mandrel groove location set be adapted to groove it is convex
Rise.
By using above-mentioned technical proposal, after the groove on raised and mandrel is adapted to, elastic torsion part is substantially increased
The stability of assembling, the outer wall of the curved shape of cell wall of groove and projection also curved shape, reduce both and contact and caused
Wear intensity.
The present invention is further arranged to：The U-shaped fastener is that the bending of square bar forms.
The deficiencies in the prior art are contrasted, beneficial effects of the present invention are：
The present invention constructs teeth groove using in sleeve lining, and the shell fragment and teeth groove for recycling elastic torsion part contradict, and then form and use
In the constant-torque of limitation operation tip.Two shell fragments on elastic torsion part are realized and the resilient engagement of teeth groove, shell fragment are arranged to
Two both ends for being distributed in main part, the length and radian of shell fragment are increased, substantially increase the resistance to compression of shell fragment and antitorque energy
Power.
The two side of teeth groove is set to the motion obliquely, catered to wall and be used for shell fragment stop part, positionable wall is used to stop
Portion it is spacing, both coordinate substantially increase to operation tip reverse fitness.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the vertical view figure structure schematic representation of the present invention.
Fig. 3 is the structural representation of elastic torsion part of the present invention.
Fig. 4 is the structural representation of mandrel of the present invention.
Embodiment
Embodiments of the invention are described further referring to figs. 1 to Fig. 4.
The present embodiment concrete structure：The mandrel 2 being rotatablely connected including axle sleeve 1 and with axle sleeve 1, is opened up on the bottom surface of axle sleeve 1
Have centre bore 10, mandrel 2 and centre bore 10 are rotatablely connected, offered on mandrel 2 be easy to medical workpiece operation tip it is interspersed in simultaneously
The axis hole 20 rotated coaxially with mandrel 2, the top of mandrel 2 are stretched out centre bore 10 and fixed by snap ring 11 and snap ring pad 12.
The elastic torsion part 3 rotated coaxially with it is arranged with mandrel 2, elastic torsion part 3 is placed on the bottom surface of axle sleeve 1, bullet
Property torsion member 3 include the main part 31 with an opening and two shell fragments 32 that are placed on 31 liang of avris of main part, main part 31 passes through
Its opening is arranged on mandrel 2, and being formed between uniform at least three double wedges 1a on the bottom surface internal perisporium of axle sleeve 1, adjacent two double wedges 1a has
Teeth groove 10.
32 curved shape of shell fragment, forming on the end of shell fragment 32 has stop part 321, stop part 321 stretch into teeth groove 10 and
The two side of teeth groove 10 contradicts.Being formed between shell fragment 32 and main part 31 has free gap 30, the width 2- of the free gap 30
3mm, the composition of the free gap causes when shell fragment 32 is squeezed and main part 31 has a cushion space.The quantity of shell fragment 32
Two are arranged to, and the outer wall of two shell fragments 32 along main part 31 substantially increases shell fragment 32 in the form of parcel
Structural strength, shell fragment 32 and the rigid load being subject to of the junction of main part 31 are also reduced, compared with the prior art multiple quantity
Rotating vane, it has very strong stability and service life.
Axially penetrating through two positioning holes 201 on mandrel 2, two positioning holes 201 extend through the both sides inwall of axis hole 20, and two
Positioning hole 201 coordinates inserted with a U-shaped fastener 4 for being contradicted with operation tip, and U-shaped fastener 4 is that the bending of square bar forms.
Limited location blend stop is formed between the input of two positioning holes 201, spacing blend stop end face is less than the opening of positioning hole 201
Place, because U-shaped fastener 4 is that the bending of square bar forms, so its U-shape configuration can form two pins and an arc-shaped curvature portion,
In assembling process, the two pins of U-shaped fastener 4 make its arc-shaped curvature portion and spacing after the insertion of two positioning holes 201 respectively
Blend stop contradicts, and spacing blend stop plays the possibility that limitation U-shaped fastener 4 further drops through two positioning holes 201.It is and spacing
The position that blend stop is set meets the thickness of U-shaped fastener 4, realizes the concealed of U-shaped fastener 4, avoids the influence caused by it of outer bound pair.
The operation tip for stretching into mandrel 2 is further locked using U-shaped fastener 4, U-shaped fastener 4 is made up of steel so that itself
Possess extremely strong pressure-resistant wear-resisting ability, use square bar to form the end face that U-shaped fastener 4 and operation tip are contradicted to be smooth
Face, the contact area with operation tip is increased, and then improve the coefficient of friction of both contacts, the assembling for improving operation tip is steady
It is qualitative.The setting of spacing blend stop in order to improve U-shaped fastener 4 assembling stability.
The two side of teeth groove 10 is respectively to cater to wall 101 and positionable wall 102, caters to wall 101 and positionable wall 102 is inclined
Shape, it is 110-120 ° to cater to wall 101 relative to the bottom land angle of inclination of teeth groove 10, and positionable wall 102 tilts relative to the bottom land of teeth groove 10
Angle is 95-100 °.
, can be with mandrel by the twisting resistance of operation tip during the stop part 321 of two shell fragments 32 and tooth Elastic Contact
2 are rotated relative to axle sleeve 1, and stop part 321, which can head on, to be catered to wall 101 and slided at it, is tilted when catering to wall 101 relative to bottom land
When angle is arranged to 110-120 °, mandrel 2 relative to axle sleeve 1 rotate caused by elastic torsion power effect it is optimal.Stop part 321 wraps
The interior edge wall 3b for including and catering to the outer wall 3a of the conflict of wall 101 and contradicted with positionable wall 102, the curved shapes of outer wall 3a and radian
For 80 °, interior edge wall 3b is a flat end face, and outer wall and the cooperation for catering to wall 101 realize shell fragment 32 and turned with respect to teeth groove 10
Dynamic, i.e., mandrel 2 rotates relative to axle sleeve 1, and the cooperation of interior edge wall and positionable wall 102 prevents mandrel 2 to reverse and cause operation tip to take off
Fall.
One corresponding both sides outer wall of mandrel 2 is flat end face, wherein fluted 202 are opened up on a flat end face, the groove
The curved shape of 202 cell walls, another two corresponds to the neck 203 for offering in side wall and being caught in for snap ring and snap ring pad on mandrel 2.
The physical fit of main part 31 among two flat end faces and elastic torsion part 3 on mandrel 2, substantially increases elasticity
Torsion member 3 is sheathed on the stability outside mandrel 2, and the setting of the neck on mandrel 2 realizes the dress that snap ring and snap ring pad play
With stability.
The angle of main part 31 corresponds to the position of 2 groove of mandrel 202 and sets the projection 311 being adapted to groove 202.
After groove 202 in projection 311 and mandrel 2 is adapted to, the stability of the assembling of elastic torsion part 3 is substantially increased,
The outer wall of the curved shape of cell wall of groove 202 and projection 311 also curved shape, reduces both and contacts and caused wear intensity.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, those skilled in the art exists
Common variations and alternatives are carried out in the range of technical solution of the present invention should all include within the scope of the present invention.
Claims (6)
1. a kind of detectable formula torque spanner, including axle sleeve and the mandrel with axle sleeve rotation connection, offered on the bottom surface of axle sleeve
Centre bore, mandrel and centre bore are rotatablely connected, and are offered on the mandrel and are easy to the operation tip of medical workpiece interspersed interior and with core
The axis hole that axle rotates coaxially, the top of the mandrel are stretched out centre bore and fixed by snap ring and snap ring pad, it is characterized in that：Institute
The elastic torsion part for being arranged with mandrel and being rotated coaxially with it is stated, elastic torsion part is placed on axle sleeve bottom surface, elastic torsion part bag
Include the main part with an opening and two shell fragments being placed on the avris of main part two, main part are arranged on mandrel through its opening, axle
Uniform at least three double wedge on the internal perisporium of bottom surface is covered, being formed between adjacent two double wedge has teeth groove, the curved shape of shell fragment, shell fragment
End on form and have a stop part, stop part stretches into teeth groove and the two side of teeth groove contradicts.
2. a kind of detectable formula torque spanner according to claim 1, it is characterized in that：The two side of the teeth groove is respectively
Wall and positionable wall are catered to, wall is catered to and positionable wall is oblique, it is 110- to cater to wall relative to teeth groove bottom land angle of inclination
120 °, positionable wall is 95-100 ° relative to teeth groove bottom land angle of inclination.
3. a kind of detectable formula torque spanner according to claim 1, it is characterized in that：Two have been axially penetrated through on the mandrel
Individual positioning hole, two positioning holes extend through the both sides inwall of axis hole, and two positioning holes coordinate the U-shaped contradicted inserted with one and workpiece point
Fastener, limited location blend stop is formed between the input of two positioning holes, and spacing blend stop end face is less than the opening of positioning hole, the U
The two pins of shape fastener contradict its arc-shaped curvature portion and spacing blend stop after the insertion of two positioning holes respectively.
4. a kind of detectable formula torque spanner according to claim 3, it is characterized in that：Outside the corresponding both sides of the one of the mandrel
Wall is flat end face, wherein fluted, the curved shape of groove cell wall is opened up on a flat end face, another two respective side on mandrel
The neck being caught in for snap ring and snap ring pad is offered on wall.
5. a kind of detectable formula torque spanner according to claim 4, it is characterized in that：The angle of the main part is corresponding
Mandrel groove location sets the projection being adapted to groove.
6. a kind of detectable formula torque spanner according to claim 3, it is characterized in that：The U-shaped fastener is that square bar is curved
Qu Ercheng.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710938665.0A CN107486805A (en) | 2017-09-30 | 2017-09-30 | A kind of detectable formula torque spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710938665.0A CN107486805A (en) | 2017-09-30 | 2017-09-30 | A kind of detectable formula torque spanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107486805A true CN107486805A (en) | 2017-12-19 |
Family
ID=60653637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710938665.0A Pending CN107486805A (en) | 2017-09-30 | 2017-09-30 | A kind of detectable formula torque spanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107486805A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040144220A1 (en) * | 2002-11-12 | 2004-07-29 | Michael Stoick | Breakaway torque wrench |
| CN201573148U (en) * | 2009-12-28 | 2010-09-08 | 徐步光 | Torque wrench |
| CN202313794U (en) * | 2011-11-05 | 2012-07-11 | 魏少华 | Torque wrench for work tip of handle of scaler |
| CN105881420A (en) * | 2016-04-29 | 2016-08-24 | 珠海西格医疗设备有限公司 | Torque wrench suitable for multiple tooth cleaning equipment |
| CN106891289A (en) * | 2017-05-02 | 2017-06-27 | 丛秀梅 | A kind of quick ultra-thin spanner |
| CN107199529A (en) * | 2017-07-21 | 2017-09-26 | 南宁市微牙机电科技有限公司 | Torque wrench for loading and unloading ultrasonic scaling equipment operation tip |
-
2017
- 2017-09-30 CN CN201710938665.0A patent/CN107486805A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040144220A1 (en) * | 2002-11-12 | 2004-07-29 | Michael Stoick | Breakaway torque wrench |
| CN201573148U (en) * | 2009-12-28 | 2010-09-08 | 徐步光 | Torque wrench |
| CN202313794U (en) * | 2011-11-05 | 2012-07-11 | 魏少华 | Torque wrench for work tip of handle of scaler |
| CN105881420A (en) * | 2016-04-29 | 2016-08-24 | 珠海西格医疗设备有限公司 | Torque wrench suitable for multiple tooth cleaning equipment |
| CN106891289A (en) * | 2017-05-02 | 2017-06-27 | 丛秀梅 | A kind of quick ultra-thin spanner |
| CN107199529A (en) * | 2017-07-21 | 2017-09-26 | 南宁市微牙机电科技有限公司 | Torque wrench for loading and unloading ultrasonic scaling equipment operation tip |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171219 |
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| WD01 | Invention patent application deemed withdrawn after publication |