CN103448034A - Tool switching device - Google Patents
Tool switching device Download PDFInfo
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- CN103448034A CN103448034A CN2013104214310A CN201310421431A CN103448034A CN 103448034 A CN103448034 A CN 103448034A CN 2013104214310 A CN2013104214310 A CN 2013104214310A CN 201310421431 A CN201310421431 A CN 201310421431A CN 103448034 A CN103448034 A CN 103448034A
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- junction surface
- flange
- protective sleeve
- stop pin
- switching device
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Abstract
The invention relates to a tool switching device which comprises a columnar part, a locking pin penetrating the columnar part in the radial direction, an elastic element sleeved on the columnar part, a protective sleeve wrapped on the columnar part and the elastic element, and a fastening device for fixing the protective sleeve. According to the invention, the device has wide applicability and universality; a user can replace switching devices provided with different tool heads according to the working requirements, and can use adapters with different functions in a matching manner through just using a tool body of the same electric tool, so that the purpose of convenience for mounting and dismounting can be achieved, and the reliability and economy of the device are improved.
Description
Technical field
The present invention relates to the electric tool technical field, is connected fast the instrument switching device with dismounting between the cutter that specifically relates to a kind of electric tool and head.
Background technology
Generally speaking, electric tool is to utilize drive motors to make its inner rotor, to drive the power transmission shaft High Rotation Speed, and then makes to be assembled in the instrument rotary operation on power transmission shaft.
Current electric tool, generally include head and operation head, head is connected with operation head is removable, there is drive motors in fuselage, drive motors is delivered to power by transmission component the work package of head, and then make work package produce rotation or shake, by connecting different operation heads, electric tool can be realized different functions, for example: polishing, sanding, cutting, root out etc., therefore, between the head of electric tool and operation head, fast assembling disassembling structure one of is design focal point, these structural design main points are to realize that operation head is connected and dismounting with the quick of head, operation head is with after head is connected, in use, this structure should guarantee effectively to be connected reliably between cutter and head, require bonding strength high, connectivity robustness is high, simultaneously, for reducing complexity, be convenient to many considerations such as maintenance, also require this structure should be simple as much as possible.
Although the head of electric tool and the multiple disassembly and assembly structure between operation head are provided in prior art, but, when bonding strength improves, can't take into account the adaptability of the reliability of connection and syndeton, balance and the compromise between the mutual factor such as simplify the structure.
Therefore, based on above-mentioned defect of the prior art, designing a kind of jockey that can assemble the electric tool of various tool and have high reliability, simplification, become insider institute problem demanding prompt solution, is also at present one of the study hotspot in this field and emphasis.
Summary of the invention
In order to improve the defect of existing electric tool jockey, the inventor, through a large amount of further investigations, after having paid sufficient creative work, thereby has completed the present invention.
Main purpose of the present invention be to provide a kind of fast demountable, strong adaptability and the high tool coupling device of connection reliability.
Based on above-mentioned purpose, technical way of the present invention is to provide a kind of tool coupling device of fast demountable, and it comprises: cylindrical portion, stop pin, flexible member, compression protective sleeve and fastener;
Described cylindrical portion has junction surface and tool head, described junction surface is arranged on an end of cylindrical portion, tool head is arranged on the other end of cylindrical portion, and junction surface is provided with flange at an end at adjacent tools head place, and the external diameter of described flange (2) is greater than the maximum outside diameter of described cylindrical portion; Establish a sliding part between flange and junction surface, the diameter of sliding part is less than the diameter of flange, and the diameter of sliding part is greater than the diameter at junction surface, the end face center at junction surface be provided with axially recessed and with the sheathed connecting hole of the power transmission shaft of tool body, described connecting hole is non-circular; The internal perisporium at junction surface is provided with the groove extended away from a center, the oblique junction surface of end of flange towards junction surface, the bottom land of groove communicates with connecting hole, groove is curved surface near the surface texture of flange portion, curved surface is comprised of two identical concave arcs of radius, between the identical concave arc of two radiuses, has knuckle;
Described stop pin radially is placed in groove, and the length of stop pin is greater than the external diameter at junction surface, and its two ends protrude from the outer surface of cylindrical portion;
Described flexible member is placed on the outer peripheral face at junction surface of cylindrical portion, and the both ends of the surface of flexible member contact with stop pin with the baffle ring at sliding part place respectively, and make flexible member have an initial compression amount;
Described compression protective sleeve is provided with the connecting portion that internal sleeve is located at described cylindrical portion, and there is the sticking department that inside is connected in described junction surface, and at junction surface, be piercing on the end of compression protective sleeve, the fastened device of sticking department is fixed, the compression protective sleeve has the pin bonding part, and described sticking department is between stop pin and fastener; When stop pin is in running order, between the connecting portion end face of compression protective sleeve and the flange of cylindrical portion, there is gap; In described sticking department, perimeter surface has screw thread, and the end face away from flange at junction surface has the helicitic texture matched with the screw thread of perimeter surface in sticking department to the external peripheral surface between groove; At stop pin, by after the locking of the power transmission shaft coupling part of instrument, the screw thread of the sticking department of compression protective sleeve and the threaded engagement of end, junction surface outer peripheral face link together.
In described tool coupling device of the present invention, further, described fastener is preferably nut, when stop pin is in running order, by nut screwing clamping, makes itself and compression protective sleeve bear against and be pressed together mutually.
In described tool coupling device of the present invention, further, described screw thread is preferably closely-pitched angular thread or trapezoidal thread, most preferably is the closely-pitched angular thread.
In described tool coupling device of the present invention, further, described flexible member is preferably helical spring.
In described tool coupling device of the present invention, further, described connecting hole cross section is preferably square, regular pentagon, regular hexagon or ellipse, and more preferably square, regular pentagon or regular hexagon, most preferably be square.
As mentioned above, by above-mentioned technological means, design of the present invention can be changed for the user jockey with different tool heads according to need of work, that is only need use the tool body of same electric tool, the work head that just can be used in conjunction with difference in functionality carries out operation, to reach multi-functional design; Because recess is curved-surface structure, its curved-surface structure can be designed as by a plurality of surface compositions and forms simultaneously, therefore can coordinate the tool body of different power transmission shaft sizes, has enlarged the scope of application of jockey, significantly alleviates user's financial burden; And, due to protective sleeve has been carried out to fixedly processing, make electric tool prevent from coming off because maloperation causes operation head, in order to avoid cause personal injury or property loss.
The accompanying drawing explanation
The generalized section that Fig. 1 is tool coupling device of the present invention.
The stereo decomposing schematic representation intention that Fig. 2 is the another tool coupling device of the present invention.
Wherein, in Fig. 1 and Fig. 2, each number designation refer to respectively following concrete meaning, element and/parts.
1. tool head 2. flange 3. sliding part 4. connecting holes
5. connecting portion 6. baffle ring 7. flexible member 8. grooves
9. compress protective sleeve 10. stop pin 11. junction surface 12. sticking departments
13. fastener 14. screw thread 15. tool body 16. power transmission shafts
17. groove 18. cylindrical portion 21. cutter lock shaft 22. bearings
23. pad 24. spring 25. connecting rings 26. connect pin
27. shift fork 28. bearing 29. pitman shaft 30. lever connecting pins
31. lever 32. cutter drive shaft 33. casings
The specific embodiment
By reference to the accompanying drawings; below by concrete embodiment, the present invention is described in detail; but the purposes of these property enumerated embodiments and purpose only are used for enumerating the present invention; not real protection scope of the present invention is formed to any type of any restriction, more non-protection scope of the present invention is confined to this.
As shown in Figure 1, the invention provides a kind of instrument switching device, power transmission shaft 16 is incorporated into local standing shape in the tool body 15 of electric tool, power transmission shaft 16 perisporiums be provided with extend to free end face in conjunction with plane, be concaved with groove 17 on the power transmission shaft 16 in conjunction with in planar range.As shown in Figure 1, in the middle of this preferred embodiment, groove is circular-arc recessed and annular and is set around power transmission shaft 16 peripheries.And known as shown in Figure 1, power transmission shaft 16 can coordinate multi-form operation head, as the spanner adapter, and the bottle opener adapter, the drill bit adapter, grinding is first-class with adapter and spanner switching, thereby realizes different functions.Because each jockey is only that tool heads end design is different, identical in order to this end of fit power transmission shaft 16, therefore, for convenient narration, below only narrate with switching device with a drill bit wherein.As shown in Figure 1, described instrument switching device comprises:
Cylindrical portion, it has junction surface and tool head;
Flexible member;
Stop pin, flexible member applies axial force to stop pin, remains on latched position while making its work;
The compression protective sleeve, it protects the inner structures such as flexible member; Be positioned at the helicitic texture of compression on protective sleeve and be positioned at the helicitic texture on junction surface, it cooperatively interacts and can prevent from compressing protective sleeve and at will do not pushed open, thus the security while having improved work;
Fastener, it can further fix the compression protective sleeve, improves the reliability of jockey.
Specifically, described instrument switching device comprises:
Stop pin 10, it radially is placed in groove 8, and the length of stop pin 10 is greater than the external diameter at junction surface 11, and its two ends protrude from the outer surface at junction surface;
Compression protective sleeve 9, it is provided with connecting portion 5 and the inner sticking department 12 that is connected in junction surface 11 that internal sleeve is located at cylindrical portion 18, and at junction surface 11, is piercing on the end of compression protective sleeve 9, and described sticking department 12 is fixing by a fastener 13.The pin bonding part 12 of compression protective sleeve 9 is between stop pin 10 and described fastener 13, the interior perimeter surface of described sticking department 12 has screw thread 14, and the end face away from flange at junction surface 11 has the helicitic texture matched with the screw thread 14 of sticking department 12 interior perimeter surface to the external peripheral surface between groove;
When stop pin 10 is in running order, between the connecting portion end face of compression protective sleeve 9 and the flange of cylindrical portion 18, there is gap; At described stop pin 10, by after 17 lockings of the groove of the power transmission shaft of tool body 15 16, the screw thread 14 of the sticking department 12 of described compression protective sleeve 9 links together with the threaded engagement of junction surface 11 end outer peripheral faces.
Described fastener can be designed as the structures such as nut, after stop pin is in running order, by nut screwing clamping, makes itself and compression protective sleeve bear against and be pressed together mutually.Because the self-locking property of fine thread is better than regular screw threads, therefore described screw thread can be preferably designed for to closely-pitched angular thread or trapezoidal thread, most preferably be the closely-pitched angular thread.
Further, described flexible member is helical spring, and described connecting hole cross section is square, regular pentagon, regular hexagon or ellipse, most preferably is square.
Above-mentioned is the introduction of the composition member of operation head jockey of the present invention, when its wish cover arranges the power transmission shaft 16 of electric tool, to compress as illustrated in fig. 1 protective sleeve 9 moves to cylindrical portion 18 flange 2 these thrusters, stop pin 10 is passed out to groove 8 bottom lands, even also the connecting hole 4 of cylindrical portion 18 is left in the pin rationed marketing, then operation head is inserted in power transmission shaft 16 so that the connecting hole 4 of cylindrical portion 18 is corresponding, when the groove 17 (as shown in Figure 1) of power transmission shaft 16 is correspondingly positioned at groove 8 bottom land, stop pin is subject to the elastic force ejection of flexible member 7 simultaneously and drops down onto on groove 8 bottom lands or corresponding recess curved surface, and be equipped on the groove 17 of power transmission shaft 16, in case twist lock rationed marketing 10 is deviate from voluntarily., will compress protective sleeve and rotate and be matched with on junction surface 11 by screw thread 14 because accidental cause is open for fear of compression protective sleeve 9, the self-locking performance by screw thread 14 self can prevent that it is open; Again by by the rotation of the fasteners such as nut, itself and compression protective sleeve 9 are compressed mutually afterwards, thereby further improve the reliability of its joint.
Coordinate by conjunction with plane, being non-circular between the connecting hole 4 of power transmission shaft 16 and cylindrical portion 18, as square, regular pentagon, regular hexagon or ellipse, therefore can mutually not rotate, can drive the operation head rotary operations by power transmission shaft 16 between the two.
Otherwise; while wanting the different adapter of dismounting and change; as long as the clamp nut of the compression protective sleeve 9 of original operation head is first unclamped; unclamp again being threaded between protective sleeve and junction surface; this end of flange 2 directions to cylindrical portion 18 is passed, and the groove 17 that stop pin 10 is broken away to power transmission shaft 16 gets final product so that power transmission shaft 16 exits.
The present invention also comprises a kind of jockey structure (seeing accompanying drawing 2) in addition, it can improve the reliability of device, and concrete structure is as follows: jockey comprises cutter lock shaft 21, bearing 22, pad 23, spring 24, connecting ring 25, connects pin 26, shift fork 27, bearing 28, pitman shaft 29, lever connecting pin 30, lever 31, cutter drive shaft 32 and casing 33; Its operation principle be with the spring function of spring by connecting ring and the skewed slot the inside that is connected pin and pushes up cutter lock shaft 21, then utilize to connect pin and realize locking with the groove of cutter connecting axle 32, finally with lever, be locked.
Operation head unloading process: at first will stir outside lever 31, then upwards mention, utilize lever 31 that pitman shaft 29 is pressed to the right, when pitman shaft touches connection pin 26, drive connecting ring 25 by spring 24 compressions, just two skewed slots on cutter lock shaft 21 are toward moving right to connect pin 26, and when connection pin 26 leaves the groove location of cutter drive shaft 32, lock shaft just can break away from pin and realize dismounting.The operation head installation process similarly, after Cutting tool installation manner is good, lever 31 is pressed in casing 33, because lever 31 has a buckle structure, it snaps on the corresponding Stop structure of casing, and the cutter lock shaft can automatically not moved right under the cutter duty, connects pin 26 and also can not deviate from from skewed slot, cutter will firmly be arranged on tool body, has improved the reliability of jockey.
From the above, design of the present invention can be changed for the user adapter with tool heads according to need of work, that is, as long as use the tool body of same electric tool just can be used in conjunction with the operation head of difference in functionality, to reach multi-functional design, improved economy; Simultaneously fastening due to being connected between the self-locking structure of screw thread itself and fastener and protective sleeve, or the lever lock fixed structure, improved the reliability of jockey, prevent the accidental of operation head, avoided personal injury and property loss.
Although for for example and the purpose of description, and introduced structure and processing procedure shown in above-mentioned embodiment of the present invention and accompanying drawing.But these are not detailed descriptions, scope of the present invention can not be confined to this.For a person skilled in the art, can make numerous modifications and variations to above-mentioned embodiment of the present invention, and these all modifications and/or change all are included in as within claim limited range of the present invention, do not break away from as described in scope and spirit of the present invention that claim was limited.
Claims (8)
1. an instrument switching device comprises:
Cylindrical portion (18), cylindrical portion (18) has junction surface (11) and tool head (1); Described junction surface (11) is arranged on the other end that an end of described cylindrical portion (18), described tool head (1) are arranged on described cylindrical portion (18), described junction surface (11) is provided with flange (2) at an end at contiguous described tool head (1) place, and the external diameter of described flange (2) is greater than the maximum outside diameter of described cylindrical portion; Be provided with sliding part (3) between described flange (2) and described junction surface (11), the diameter of described sliding part (3) is less than the diameter of described flange (2) but is greater than the diameter of described junction surface (11); The end face center at described junction surface (11) be provided with axially recessed and with the sheathed connecting hole (4) of the power transmission shaft (16) of tool body (15), described connecting hole (4) is non-circular; And the internal perisporium of described junction surface (11) is provided with the groove (8) extended away from a center, the oblique junction surface of end of flange towards described junction surface (11), the bottom land of described groove (8) communicates with described connecting hole (4), described groove (8) is curved surface near the surface texture of flange portion, curved surface is comprised of two identical concave arcs of radius, between the identical concave arc of two radiuses, has knuckle;
Stop pin (10), described stop pin (10) radially is placed in described groove (8), and the length of described stop pin (10) is greater than the external diameter of described junction surface (11), and its two ends protrude from the outer surface at junction surface;
Flexible member (7), it is placed on the outer peripheral face at described junction surface (11) of described cylindrical portion (18), the baffle ring (6) that the both ends of the surface of described flexible member (7) are located with described sliding part (3) respectively contacts with described stop pin (10), and makes described flexible member (7) have an initial compression amount;
Compression protective sleeve (9), it is provided with internal sleeve and is located at the sticking department (12) that the connecting portion of described sliding part (3) (5) and inside are connected in described junction surface (11), and in described junction surface (11), be piercing on the end of described compression protective sleeve (9), described sticking department (12) is fixing by a fastener (13), and the pin bonding part (12) of described compression protective sleeve (9) is positioned between stop pin and described fastener (13); When described stop pin (10) is in running order, between the flange of the connecting portion end face of described compression protective sleeve (9) and described cylindrical portion (18), there is gap; The interior perimeter surface of described sticking department (12) has screw thread (14), and the end face away from flange of described junction surface (11) has the helicitic texture matched with the described screw thread (14) of the interior perimeter surface of described sticking department (12) to the external peripheral surface between groove; At described stop pin (10), by after the locking of the groove (17) of the described power transmission shaft (16) of tool body (15), the screw thread (14) of the sticking department (12) of described compression protective sleeve (9) links together with the threaded engagement of end, described junction surface (11) outer peripheral face; Described fastener (13) is preferably the nut class formation.
2. instrument switching device according to claim 1; it is characterized in that: described fastener (13) is nut; after described stop pin (10) is in running order, by described nut screwing clamping, make itself and described compression protective sleeve bear against and be pressed together mutually.
3. instrument switching device according to claim 1 and 2, it is characterized in that: described screw thread is closely-pitched angular thread or trapezoidal thread.
4. according to the described instrument switching device of claim 1-3 any one, it is characterized in that: described screw thread is the closely-pitched angular thread.
5. according to the described instrument switching device of claim 1-4 any one, it is characterized in that: described flexible member (7) is helical spring.
6. according to the described instrument switching device of claim 1-5 any one, it is characterized in that: the cross section of described connecting hole (4) is square, regular pentagon, regular hexagon or ellipse.
7. according to the described instrument switching device of claim 1-6 any one, it is characterized in that: the cross section of described connecting hole (4) is square, regular pentagon or regular hexagon.
8. according to the described instrument switching device of claim 1-7 any one, it is characterized in that: the cross section of described connecting hole (4) is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310421431.0A CN103448034B (en) | 2013-09-16 | 2013-09-16 | A kind of instrument switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310421431.0A CN103448034B (en) | 2013-09-16 | 2013-09-16 | A kind of instrument switching device |
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| Publication Number | Publication Date |
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| CN103448034A true CN103448034A (en) | 2013-12-18 |
| CN103448034B CN103448034B (en) | 2015-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310421431.0A Active CN103448034B (en) | 2013-09-16 | 2013-09-16 | A kind of instrument switching device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105881216A (en) * | 2016-06-06 | 2016-08-24 | 江苏吉星新材料有限公司 | Diverting mechanism used for copper polishing conditioning of wafer |
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| CN101049639A (en) * | 2007-05-16 | 2007-10-10 | 孙延新 | Quick change chuck of electric tool |
| CN101176989A (en) * | 2006-11-08 | 2008-05-14 | 株式会社牧田 | Electric tool |
| CN201537890U (en) * | 2009-09-25 | 2010-08-04 | 周志旸 | Combined screwdriver |
| CN102333690A (en) * | 2009-03-13 | 2012-01-25 | Zf腓特烈斯哈芬股份公司 | Assembly, method for applying said assembly, and tool for applying the method |
| JP2012076179A (en) * | 2010-09-30 | 2012-04-19 | Hitachi Koki Co Ltd | Power tool |
| CN102958633A (en) * | 2010-06-23 | 2013-03-06 | 罗伯特·博世有限公司 | Hand-held power tool comprising a hammer mechanism |
-
2013
- 2013-09-16 CN CN201310421431.0A patent/CN103448034B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101176989A (en) * | 2006-11-08 | 2008-05-14 | 株式会社牧田 | Electric tool |
| CN101049639A (en) * | 2007-05-16 | 2007-10-10 | 孙延新 | Quick change chuck of electric tool |
| CN102333690A (en) * | 2009-03-13 | 2012-01-25 | Zf腓特烈斯哈芬股份公司 | Assembly, method for applying said assembly, and tool for applying the method |
| CN201537890U (en) * | 2009-09-25 | 2010-08-04 | 周志旸 | Combined screwdriver |
| CN102958633A (en) * | 2010-06-23 | 2013-03-06 | 罗伯特·博世有限公司 | Hand-held power tool comprising a hammer mechanism |
| JP2012076179A (en) * | 2010-09-30 | 2012-04-19 | Hitachi Koki Co Ltd | Power tool |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105881216A (en) * | 2016-06-06 | 2016-08-24 | 江苏吉星新材料有限公司 | Diverting mechanism used for copper polishing conditioning of wafer |
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| Publication number | Publication date |
|---|---|
| CN103448034B (en) | 2015-10-14 |
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