CN112963434A - Quick-change flexible shaft coupler - Google Patents
Quick-change flexible shaft coupler Download PDFInfo
- Publication number
- CN112963434A CN112963434A CN202110118158.9A CN202110118158A CN112963434A CN 112963434 A CN112963434 A CN 112963434A CN 202110118158 A CN202110118158 A CN 202110118158A CN 112963434 A CN112963434 A CN 112963434A
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- CN
- China
- Prior art keywords
- flexible shaft
- clamping
- clamp spring
- pressing rod
- quick
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
- F16C1/02—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing for conveying rotary movements
- F16C1/08—End connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
A quick-change flexible shaft coupler relates to the technical field of medical instruments and comprises a connector for clamping or loosening a flexible shaft to be connected, wherein a clamp spring for clamping the flexible shaft to be connected is arranged in the connector, and the inner diameter of the clamp spring is smaller than the outer diameter of the flexible shaft in a connecting state, so that the flexible shaft is clamped and positioned front and back; under the action of the pressing mechanism, the inner diameter of the clamp spring is enlarged so as to loosen the clamped flexible shaft or facilitate the insertion of the flexible shaft to be connected, and the flexible shaft and the coupling are disassembled. The rigid coupling with complex structure and complex mounting and dismounting is adopted in the past, the mounting and dismounting process is very simple, convenient and quick, and the efficiency and operability of mounting and replacing the flexible shaft are greatly improved. Compared with a common coupler, the concentricity is relatively high, the vibration generated when the flexible shaft transmits rotation and torque is reduced, the transmission precision of relevant machinery is improved, the service life of the machinery is prolonged, the use comfort of an operator and a relevant user is improved, and the comprehensive performance of relevant products is improved.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a quick-change flexible shaft coupler.
Background
The transmission shaft is divided into a flexible shaft and a hard shaft, the flexible shaft and the hard shaft have advantages and disadvantages respectively, the flexible shaft can be bent freely to pass around a barrier, the rotary motion at a specific position can be realized, the flexible shaft can be used for transmission of various handheld power machines, the flexible shaft is adopted to transmit torque and rotate in some medical mechanical equipment, such as a sputum excretion machine, one end of the flexible shaft needs to be connected with the output end of a motor through a coupling, the flexible shaft needs to be replaced relatively due to the related structure and the use performance of the flexible shaft so as to meet the use requirement of the mechanical equipment, and meanwhile, the flexible shaft needs to be replaced after reaching a certain service life, so that the coupling suitable for the flexible shaft is.
The existing flexible shaft coupler is often connected with a flexible shaft in a fixed mode at one end of the coupler in a rigid connection mode such as bolts, the coupler is complex in structure, the installation and disassembly process is complex, related technical personnel are required to operate, the efficiency and operability of flexible shaft replacement and installation are not improved, and the work efficiency of related workers is greatly reduced. Meanwhile, the concentricity of the flexible shaft and the motor output shaft is not high due to the fixing mode of the existing flexible shaft coupler, so that the flexible shaft is accompanied by certain vibration when transmitting rotation and torque, the transmission precision of relevant machinery and the service life of the machinery can be reduced, the use comfort of an operator and a relevant user can be reduced, and the improvement on the comprehensive performance of relevant products is not facilitated.
Disclosure of Invention
The invention aims to solve the defects of complex mounting and dismounting and low efficiency of a common flexible shaft coupler, and provides a quick-change flexible shaft coupler to achieve the purpose of quick and efficient mounting and dismounting.
In order to achieve the purpose, the invention provides the following technical scheme: a quick-change flexible shaft coupler comprises a connector for clamping or loosening a flexible shaft to be connected, wherein a clamp spring for clamping the flexible shaft to be connected is arranged in the connector, and the inner diameter of the clamp spring is smaller than the outer diameter of the flexible shaft in a connecting state, so that the flexible shaft is clamped and positioned front and back; under the action of the pressing mechanism, the inner diameter of the clamp spring is enlarged so as to loosen the clamped flexible shaft or facilitate the insertion of the flexible shaft to be connected, and the flexible shaft and the coupling are disassembled.
As a preferred technical scheme of the invention, the clamp spring is formed by enclosing a plurality of clamp strips end to form a circular clamp spring body, an intermittent clamping sheet is formed on the inner side of the clamp spring body, the middle part of each clamp strip protrudes upwards, two sides of each clamp strip extend downwards, and a stress cavity is formed in each clamp strip.
As a preferred technical scheme of the invention, a second mounting hole is formed in the connecting body, a clamp spring support for supporting a clamp spring is arranged at the bottom of the second mounting hole, a clamping through hole for allowing a flexible shaft to be connected to penetrate conveniently is formed in the center of the clamp spring support, a supporting inner ring is arranged on the outer edge of the top of the clamp spring support, and a stress cavity of the clamp spring abuts against the supporting inner ring of the clamp spring support during assembly.
As a preferred technical scheme of the invention, the pressing mechanism comprises a clamping sleeve and a pressing rod which are coaxially arranged and are both of a hollow structure, the clamping sleeve is in threaded connection with the upper part of the inside of the second mounting hole, the rod body of the pressing rod is arranged in the clamping sleeve, the bottom of the pressing rod is provided with an annular wedge-shaped end surface which is abutted against the snap spring intermittent clamping sheet, the upper edge of the annular wedge-shaped end surface is inwardly folded to form an annular clamping surface and is arranged below the circular end surface of the bottom of the clamping sleeve; the pressing rod is pressed downwards, and the annular wedge-shaped end surface extrudes the intermittent clamping sheet, so that the clamping spring is forced to loosen the clamped flexible shaft or the flexible shaft to be connected which passes through the shaft hole arranged in the middle of the pressing rod is convenient to insert; the pressing rod is loosened, moves upwards under the elastic action of the clamp spring and is limited by the circular end face at the bottom of the clamping sleeve, and the clamp spring continuously clamps the flexible shaft.
In a preferred embodiment of the present invention, when the pressing lever is not subjected to an external force, the annular wedge-shaped end surface of the pressing lever and the intermittent clamping piece of the snap spring are kept in a non-acting abutting state, and the annular engaging surface of the pressing lever and the circular end surface of the bottom of the ferrule are kept in a non-acting abutting state.
As a preferred technical solution of the present invention, the shaft of the pressing lever is provided with a plurality of vertically arranged bar-shaped notches.
In a preferred embodiment of the present invention, a cap is provided on a top of the shaft of the pressing lever.
As a preferable technical scheme of the invention, the bottom of the second mounting hole on the connecting body is provided with a positioning square hole, and the positioning square hole extends towards the other end and is communicated with the first mounting hole arranged at the other end of the connecting body.
The invention provides a quick-change flexible shaft coupler which has the following beneficial effects compared with the prior art:
1) the quick-change flexible shaft coupler provided by the invention adopts the clamp spring structure to clamp the flexible shaft, and can be quickly disassembled and assembled through the pressing mechanism, and the quick-change flexible shaft coupler is compact in structure, and is different from the traditional rigid coupler which is complex in structure and complex in assembly and disassembly and is adopted for flexible shaft installation; the installation and disassembly processes are also very simple, convenient and quick, the efficiency and the operability of the installation and the replacement of the flexible shaft are greatly improved, and the working efficiency of related workers is further improved.
2) Compared with a common coupler, the quick-change flexible shaft coupler provided by the invention has the advantages that the concentricity is relatively high in a fixing mode, the vibration generated when the flexible shaft transmits rotation and torque is reduced, the transmission precision of relevant machinery is further improved, the service life of the machinery is further prolonged, the use comfort of operators and relevant users is improved, and the comprehensive performance of relevant products is favorably improved.
Drawings
Fig. 1 is a schematic diagram of the appearance of the quick-change flexible shaft coupler.
Fig. 2 is a schematic sectional structure view of the quick-change flexible shaft coupling of the invention.
FIG. 3 is a schematic sectional view of the connector.
Fig. 4 is a view from a in fig. 3.
Fig. 5 is a schematic perspective view of the snap spring.
Fig. 6 is a schematic cross-sectional view of the snap spring.
Fig. 7 is a schematic structural view of the pressing lever.
Fig. 8 is a view from direction B of fig. 7.
Fig. 9 is a schematic structural diagram of the snap spring support.
Fig. 10 is a schematic cross-sectional structure view of the snap spring support.
The reference numbers in the figures mean: 1-connector, 2-stress cavity, 3-first mounting hole, 4-positioning square hole, 5-second mounting hole, 6-clamp spring, 7-clamp sleeve, 8-cover cap, 9-clamping strip, 10-clamp spring support, 11-mounting thread, 12-mounting shaft hole, 13-annular wedge-shaped end face, 14-clamping through hole, 15-strip-shaped notch, 16-pressing rod, 17-supporting inner ring, 18-clamping piece and 19-annular clamping face.
Detailed Description
Referring to fig. 1-10, the invention provides a quick-change flexible shaft coupler, which comprises a connector 1 for clamping or loosening a flexible shaft to be connected, wherein a second mounting hole 5 is formed in the connector 1, mounting threads 11 are arranged on the upper portion of the second mounting hole 5, a positioning square hole 4 is formed in the bottom of the second mounting hole 5, and the positioning square hole 4 extends towards the other end and is communicated with a first mounting hole 3 formed in the other end of the connector 1.
A clamp spring 6 for clamping a flexible shaft to be connected is arranged in the connector 1, and the inner diameter of the clamp spring 6 is smaller than the outer diameter of the flexible shaft in a connecting state, so that the flexible shaft is clamped and positioned front and back; under the action of the pressing mechanism, the inner diameter of the clamp spring 6 is enlarged so as to loosen the clamped flexible shaft or facilitate the insertion of the flexible shaft to be connected, and the flexible shaft and the coupling are disassembled.
Referring to fig. 5 and 6, the circlip 6 is formed by joining a plurality of circlips 9 end to form a circular circlip body, an interrupted clamping piece 18 is formed at the inner side of the circlip body, the middle part of the circlip 9 protrudes upwards, the two sides extend downwards, and a stress cavity 2 is formed inside the circlip body.
Referring to fig. 2, 9 and 10, a clamp spring support 10 for supporting the clamp spring 6 is arranged at the bottom of the second mounting hole 5, a clamping through hole 14 for allowing a flexible shaft to be connected to pass through is formed in the center of the clamp spring support 10, a supporting inner ring 17 is arranged on the outer edge of the top of the clamp spring support, and the stress cavity 2 of the clamp spring 6 abuts against the supporting inner ring 17 of the clamp spring support 10 during assembly.
Referring to fig. 2, 7 and 8 together, as a preferred embodiment of the present invention, the pressing mechanism is composed of a ferrule 7 and a pressing rod 16 which are coaxially arranged and are both hollow structures, a cap 8 is disposed on the top of the rod body of the pressing rod 16, the ferrule 7 is screwed above the inside of the second mounting hole 5, and the rod body of the pressing rod 16 is disposed in the ferrule 7.
The bottom of the pressing rod 16 is provided with an annular wedge-shaped end surface 13 which is abutted against the discontinuous clamping sheet 18 of the clamp spring 6, the upper edge of the annular wedge-shaped end surface 13 is folded inwards to form an annular clamping surface 19 and is arranged below the circular end surface at the bottom of the clamping sleeve 7. The pressing rod 16 is pressed downwards, and the annular wedge-shaped end surface 13 extrudes the intermittent clamping sheet 18, so that the clamp spring 6 is forced to loosen the clamped flexible shaft or the flexible shaft to be connected which passes through the shaft hole 12 arranged in the middle of the pressing rod 16 is convenient to insert; the pressing rod 16 is loosened, the pressing rod 16 moves upwards under the elastic force of the clamp spring 6 and is limited by the circular end face at the bottom of the clamping sleeve 7, and the clamp spring 6 continuously clamps the flexible shaft.
In order to improve the shaft stress intensity of the pressing rod 16 and prolong the service life, a plurality of vertically arranged strip-shaped notches 15 are arranged on the shaft of the pressing rod 16, and the shaft can be prevented from being broken due to excessive extrusion of a spring along with the pressing of the pressing rod 16.
When the quick-change flexible shaft coupler is installed, the clamp spring support is firstly placed into the second installation hole, then the clamp spring is placed, and the clamping sleeve sleeved outside the pressing rod in advance is screwed into the installation thread on the second installation hole. After the installation is finished, when the pressing rod 16 is not acted by external force, the annular wedge-shaped end surface 13 of the pressing rod 16 and the intermittent clamping sheet 18 of the clamp spring 6 keep a non-acting force abutting state, and the annular clamping surface 19 of the pressing rod 16 and the circular end surface at the bottom of the clamping sleeve 7 keep a non-acting force abutting state.
When the flexible shaft is required to be connected, the flexible shaft is inserted into the mounting shaft hole in the middle of the pressing rod, and the flexible shaft cannot continuously penetrate downwards and penetrate through the center of the clamp spring because the outer diameter of the flexible shaft is larger than the inner diameter of the clamp spring under the condition of not being stressed. At this moment, through the manual nut cap of pressing, under extruded effect, the opening of jump ring is further expanded and is opened, continues to insert downwards this moment and can install the flexible axle, loosens the nut cap at last, under the effect of jump ring elasticity, resumes original state to with the firm centre gripping of flexible axle, accomplish the installation of flexible axle. When the flexible shaft needs to be detached, the flexible shaft can be quickly pulled away by pressing the cap.
It should be noted that the concept of the present invention mainly lies in the assembling and connecting structure between the coupling and the flexible shaft and the mounting and fixing method, and the structure of other parts of the coupling is not the key point of the present invention, and therefore, is not specifically described.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the inventive concept within the technical scope of the present invention, and the technical solution and the inventive concept thereof should be covered by the scope of the present invention.
Claims (8)
1. A quick-change flexible shaft coupler comprises a connector (1) for clamping or loosening a flexible shaft to be connected, and is characterized in that a clamp spring (6) for clamping the flexible shaft to be connected is arranged in the connector (1), and the inner diameter of the clamp spring (6) is smaller than the outer diameter of the flexible shaft in a connecting state, so that the flexible shaft is clamped and positioned front and back; under the action of the pressing mechanism, the inner diameter of the clamp spring (6) is enlarged so as to loosen the clamped flexible shaft or facilitate the insertion of the flexible shaft to be connected, and the flexible shaft and the coupling are disassembled.
2. The quick-change flexible shaft coupling as claimed in claim 1, characterized in that the snap spring (6) is formed by a plurality of snap strips (9) which are connected end to form a circular snap spring body, an interrupted clamping piece (18) is formed at the inner side of the snap spring body, the middle part of the snap strip (9) protrudes upwards, the two sides extend downwards, and a stress cavity (2) is formed inside the snap strip.
3. The quick-change flexible shaft coupler as claimed in claim 2, wherein the connecting body (1) is provided with a second mounting hole (5), a clamp spring support (10) for supporting a clamp spring (6) is arranged at the bottom of the second mounting hole (5), a clamping through hole (14) through which a flexible shaft to be connected can pass is formed in the center of the clamp spring support (10), a supporting inner ring (17) is arranged on the outer edge of the top of the clamp spring support, and a stress cavity (2) of the clamp spring (6) abuts against the supporting inner ring (17) of the clamp spring support (10) during assembly.
4. The quick-change flexible shaft coupling as claimed in claim 3, wherein the pressing mechanism is composed of a clamping sleeve (7) and a pressing rod (16) which are coaxially arranged and are both hollow structures, the clamping sleeve (7) is in threaded connection with the upper portion inside the second mounting hole (5), the rod body of the pressing rod (16) is arranged in the clamping sleeve (7), the bottom of the pressing rod (16) is provided with an annular wedge-shaped end surface (13) which is in butt joint with an intermittent clamping sheet (18) of the clamping spring (6), the upper edge of the annular wedge-shaped end surface (13) is inwardly folded to form an annular clamping surface (19) and is arranged below the circular end surface at the bottom of the clamping sleeve (7); the pressing rod (16) is pressed downwards, the annular wedge-shaped end surface (13) extrudes the intermittent clamping sheet (18), so that the clamping spring (6) is forced to loosen the clamped flexible shaft or the flexible shaft to be connected which passes through the middle mounting shaft hole (12) of the pressing rod (16) is convenient to insert; the pressing rod (16) is loosened, the pressing rod (16) moves upwards under the elastic action of the clamp spring (6) and is limited by the circular end face at the bottom of the clamping sleeve (7), and the clamp spring (6) is continuously clamped with the flexible shaft.
5. The quick-change flexible shaft coupling as claimed in claim 4, characterized in that when the pressing rod (16) is not acted by external force, the annular wedge-shaped end surface (13) of the pressing rod (16) and the discontinuous clamping piece (18) of the snap spring (6) are kept in a non-acting abutting state, and the annular clamping surface (19) of the pressing rod (16) and the bottom circular end surface of the clamping sleeve (7) are kept in a non-acting abutting state.
6. The quick-change flexible shaft coupling according to claim 4, characterized in that the body of the pressing rod (16) is provided with a plurality of vertically arranged strip-shaped notches (15).
7. The quick-change flexible shaft coupling as claimed in claim 4, characterized in that a cap (8) is arranged on the top of the pressing rod (16).
8. The quick-change flexible shaft coupling as claimed in claim 3, wherein a positioning square hole (4) is formed in the bottom of the second mounting hole (5) of the connecting body (1), and the positioning square hole (4) extends towards the other end and is communicated with the first mounting hole (3) formed in the other end of the connecting body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110118158.9A CN112963434A (en) | 2021-01-28 | 2021-01-28 | Quick-change flexible shaft coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110118158.9A CN112963434A (en) | 2021-01-28 | 2021-01-28 | Quick-change flexible shaft coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112963434A true CN112963434A (en) | 2021-06-15 |
Family
ID=76271932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110118158.9A Pending CN112963434A (en) | 2021-01-28 | 2021-01-28 | Quick-change flexible shaft coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112963434A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007010153A (en) * | 2005-06-30 | 2007-01-18 | Ti Group Automotive Systems Llc | Quick connector |
| CN203052055U (en) * | 2013-01-23 | 2013-07-10 | 北京菁华昱创节能设备有限公司 | Fast connector |
| CN204878279U (en) * | 2015-08-19 | 2015-12-16 | 安徽江淮汽车股份有限公司 | Select gear shift flexible axle joint cover assembly |
| CN106930870A (en) * | 2010-03-30 | 2017-07-07 | 马勒国际有限公司 | Coupling arrangement, crankcase bleeder and VMC |
| DE202017102299U1 (en) * | 2016-06-08 | 2017-07-24 | Ifog Company Ltd. (Tw) | pipe connection |
| CN207796350U (en) * | 2017-12-29 | 2018-08-31 | 诸暨市恒泰汽车部件有限公司 | A kind of quick connector |
| US20190162343A1 (en) * | 2017-06-14 | 2019-05-30 | Gp Enterprises Co., Ltd | Pipeline Connecting Device for Quick Installation and Disassembly and Self-Locking and Self-Sealing |
| CN212131663U (en) * | 2020-04-26 | 2020-12-11 | 四川岷河管业有限公司 | Convex ring type detachable quick-plug connecting device |
-
2021
- 2021-01-28 CN CN202110118158.9A patent/CN112963434A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007010153A (en) * | 2005-06-30 | 2007-01-18 | Ti Group Automotive Systems Llc | Quick connector |
| CN106930870A (en) * | 2010-03-30 | 2017-07-07 | 马勒国际有限公司 | Coupling arrangement, crankcase bleeder and VMC |
| CN203052055U (en) * | 2013-01-23 | 2013-07-10 | 北京菁华昱创节能设备有限公司 | Fast connector |
| CN204878279U (en) * | 2015-08-19 | 2015-12-16 | 安徽江淮汽车股份有限公司 | Select gear shift flexible axle joint cover assembly |
| DE202017102299U1 (en) * | 2016-06-08 | 2017-07-24 | Ifog Company Ltd. (Tw) | pipe connection |
| US20190162343A1 (en) * | 2017-06-14 | 2019-05-30 | Gp Enterprises Co., Ltd | Pipeline Connecting Device for Quick Installation and Disassembly and Self-Locking and Self-Sealing |
| CN207796350U (en) * | 2017-12-29 | 2018-08-31 | 诸暨市恒泰汽车部件有限公司 | A kind of quick connector |
| CN212131663U (en) * | 2020-04-26 | 2020-12-11 | 四川岷河管业有限公司 | Convex ring type detachable quick-plug connecting device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210615 |
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| RJ01 | Rejection of invention patent application after publication |