CN218356302U - Reciprocating saw blade with protective sheath and saw cutting machine head - Google Patents
Reciprocating saw blade with protective sheath and saw cutting machine head Download PDFInfo
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- CN218356302U CN218356302U CN202221352174.0U CN202221352174U CN218356302U CN 218356302 U CN218356302 U CN 218356302U CN 202221352174 U CN202221352174 U CN 202221352174U CN 218356302 U CN218356302 U CN 218356302U
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Abstract
The utility model provides a reciprocating saw blade with a protective sheath and a saw cutting machine head, which belongs to the field of medical saw cutting equipment. The method comprises the following steps: the saw blade comprises a saw blade body, wherein the head end of the saw blade body is provided with a cutting part, and the tail end of the saw blade body is provided with a power access part; the sheath is sleeved on the saw blade body, the cutting part extends out of one end of the sheath, and the power access part extends out of the other end of the sheath; the saw blade body is hinged with the protective sheath, the power access part is connected with power, and the saw blade body is driven by the power to swing back and forth around the hinged position. A sawing head comprising: the mounting seat, the driving mechanism and the reciprocating saw blade with the sheath are arranged on the mounting seat; the sheath is fixed on the mounting seat, and the driving mechanism is connected with the power access part and used for applying reciprocating swing power to the power access part. The utility model discloses moment that receives when can reducing the cutting of saw bit body makes the saw bit body non-deformable when the cutting, has guaranteed the cutting stability and the cutting efficiency of saw bit body, has prolonged the life of saw bit body.
Description
Technical Field
The utility model belongs to the field of medical equipment, especially relate to a reciprocal saw bit and saw cut aircraft nose of sheath are protected in area.
Background
In an orthopedic surgery, a reciprocating saw blade is a common tool for sawing bones, and the reciprocating saw blade is generally connected with a sawing head, and the cutting of bone tissues is realized by clamping the reciprocating saw blade by the sawing head and connecting external power to drive the reciprocating saw blade to perform high-frequency reciprocating motion. The existing reciprocating saw blade is usually connected with a sawing machine head at one end, and is usually suspended at the other end, the whole saw blade is supported only by the joint of the saw head and the sawing machine head, the cutting part of the saw blade is far away from the supporting position, the saw blade is easily stressed to deform and break during cutting, and the cutting efficiency, the service life and the safety of the saw blade are reduced.
SUMMERY OF THE UTILITY MODEL
In view of the above shortcomings of the prior art, an object of the present invention is to provide a reciprocating saw blade and a saw cutting head with a protective sheath, which are used for solving the problems of easy stress deformation, breakage and the like of the reciprocating saw blade in the prior art.
To achieve the above and other related objects, the present invention provides a reciprocating saw blade with a protective sheath, comprising:
the saw blade comprises a saw blade body, wherein a cutting part is arranged at the head end of the saw blade body, and a power access part is arranged at the tail end of the saw blade body;
the sheath is sleeved on the saw blade body, the cutting part extends out of one end of the sheath, and the power access part extends out of the other end of the sheath; wherein, the first and the second end of the pipe are connected with each other,
the saw blade body is hinged with the protective sheath, the power access part is connected with power, and the saw blade body is driven by the power to swing back and forth around the hinged position.
Optionally, the blade body includes a first arm portion extending along a first direction and a second arm portion extending along a second direction, the cutting portion and the power connection portion are respectively disposed on the first arm portion and the second arm portion, and an included angle is formed between the first arm portion and the second arm portion.
Optionally, the tail end of the saw blade body has two spaced apart prongs extending toward the power end to form a fork for receiving power.
Optionally, the tail end of the saw blade body is provided with an avoidance hole or an avoidance groove.
Optionally, the protecting sheath is provided with a fixing hole corresponding to the tail end of the saw blade body, and the fixing hole is used for fixing the protecting sheath.
Optionally, the sheath is hinged to the saw blade body at a first position, a hinge hole and a rotation shaft are respectively arranged corresponding to the first position, and the sheath is hinged to the saw blade body through the rotation shaft.
Optionally, be provided with the location step on the axis of rotation, still overlap on the axis of rotation and be equipped with the holding ring, the location step reaches the holding ring is followed the axis direction of axis of rotation sets up relatively, is used for with the saw bit body with the sheath is in go on fixing a position in the axis direction of axis of rotation.
The utility model also provides a saw cut aircraft nose, include: a mount, a drive mechanism, and a reciprocating saw blade with a sheath as described in any of the above;
the sheath is fixed on the mounting seat, and the driving mechanism is connected with the power access part and used for applying reciprocating swing power to the power access part.
Optionally, the mounting base includes a base body, a pressing cover and a connecting shaft, the pressing cover is detachably connected to the base body through the connecting shaft, and the reciprocating saw blade with the protective sheath is mounted between the cover body of the pressing cover and the base body through the connecting shaft.
Optionally, the connecting shaft is slidably disposed in the seat body along an axial direction thereof, a spring is disposed in the mounting seat, the spring presses the cover body against the sheath along the axial direction of the connecting shaft, a pressing protrusion exposed out of the seat body is disposed on the connecting shaft, and a protruding direction of the pressing protrusion is opposite to a pressing direction of the spring.
As above, the utility model provides a reciprocal saw bit of sheath and saw cut aircraft nose are protected in area has following beneficial effect: because the saw bit is connected in protecting the sheath at primary importance, protect the sheath and can follow primary importance and provide the support for the saw bit, reduced the distance between cutting portion and the strong point, when the saw bit cutting, reduced the moment that the saw bit receives, make the saw bit non-deformable when the cutting, stability when having increased the saw bit cutting to increase saw bit cutting efficiency, the life of extension saw bit.
Drawings
FIG. 1 is a schematic structural view of a sheath saw blade according to an embodiment of the present invention;
FIG. 2 is a schematic view of an exploded structure of a sheath saw blade according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a handpiece driving mechanism in an embodiment of the present invention;
fig. 4 is a schematic sectional structure view of the mounting base in the embodiment of the present invention;
fig. 5 is a schematic structural diagram of a sawing head according to an embodiment of the present invention.
Reference numerals: the cutting device comprises a saw blade body 1, a protective sheath 2, a first arm part 3, a second arm part 4, a cutting part 5, an access part 6, a rotating shaft 7, a positioning step 8, a positioning ring 9, a reciprocating saw blade 10 with the protective sheath, a lower cover plate 11, an upper cover plate 12, a through groove 13, a shell 21, a cover body 22, a cam 23, a connecting shaft 24, a spring 25, a pressing bulge 26, a seat body 27 and a mounting column 28.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
Referring to fig. 1 to 5, the present embodiment provides a reciprocating saw blade body 10 with a sheath, which includes a sheath 2 and a blade body 1. The head end of the saw blade body 1 is provided with a cutting part 5, and the tail end is provided with a power access part 6. The sheath 2 is sleeved on the saw blade body, the cutting part 5 of the saw blade body 1 extends out from one end of the sheath 2, and the power access part 6 extends out from the other end of the sheath 2; the saw blade body is hinged with the protective sheath 1, the power access part 6 accesses power, and the saw blade body 1 is driven by the power to swing back and forth around the hinged position.
In this embodiment, the sheath includes an upper cover plate 12 and a lower cover plate 11, the upper cover plate 12 is fastened to the lower cover plate 11, a gap exists between the upper cover plate 12 and the lower cover plate 11 after the fastening, and the saw blade body 1 can swing in the gap between the upper cover plate 12 and the lower cover plate 11.
As shown in fig. 2, in the present embodiment, the saw blade body is a bent structure, and includes a first arm portion 3 and a second arm portion 4, the first arm portion 3 extends along a first direction, the second arm portion 4 extends along a second direction, and an included angle is formed between the first direction and the second direction. The cutting portion 5 is provided on the first arm portion 3 and the power receiving portion 6 is provided on the second arm portion 4. In this embodiment, the blade body is L-shaped, the first arm portion 3 is perpendicular to the second arm portion 4, the ends of the first arm portion 3 and the second arm portion 4 close to each other are connected to each other, the cutting portion 5 is disposed at the end of the first arm portion 3 far from the second arm portion 4, and the power receiving portion 6 is disposed at the end of the second arm portion 4 far from the first arm portion 3.
In this embodiment, the tail end of the power connection blade body 1 has two separate fork legs. The two fork legs extend to the power end to form a shifting fork, and the shifting fork is used for connecting power. In this embodiment, the tail end of saw bit body 1 is provided with dodges the hole or dodges the groove, is convenient for dodge after saw bit body 1 installs. The protecting sheath 2 is provided with a fixing hole corresponding to the tail end of the saw blade body 1, and the fixing hole is used for fixing the protecting sheath 2. Wherein, the sheath is articulated with the saw blade body at the first position. In some embodiments, the power access 6 is provided between the first position and the cutting portion 5, the range of motion of the cutting portion 5 being greater. In this embodiment, the first position is provided between the power receiving portion 6 and the cutting portion 5 of the blade body 1, and the torque transmission ratio between the cutting portion 5 and the power receiving portion 6 can be adjusted by adjusting the distance between the power receiving portion 6 and the first position, respectively. When the distance between the power access part 6 and the first position is larger than the distance between the cutting part 5 and the first position, the moment generated by the cutting part 5 is larger than the moment input by the power access part 6, so that hard materials such as bones and the like can be conveniently cut.
Specifically, in this embodiment, the first position corresponds to the connection position between the first arm portion 3 and the second arm portion 4, the protecting sheath 2 is provided with a hinge hole and a rotating shaft 7 corresponding to the first position on the saw blade body, and the saw blade body is hinged to the protecting sheath 2 through the rotating shaft 7. Be provided with location step 8 on the axis of rotation 7, still overlap on the axis of rotation 7 and be equipped with holding ring 9, location step 8 and holding ring 9 set up along the axis direction of axis of rotation 7 relatively for fix a position the axis direction of axis of rotation 7 at the axis direction of axis of rotation 7 to sheath 2 and saw bit body 1.
As shown in fig. 3 to 5, the present embodiment further provides a saw head, which includes a mounting seat, a driving mechanism and the sheath-protecting saw blade 10, wherein the sheath 2 is fixed on the mounting seat, and the driving mechanism is connected to the power receiving portion 6 and is used for applying reciprocating swing power to the power receiving portion 6. In some embodiments, the driving mechanism is a crank-link mechanism, which is rotatably connected to the power input portion 6 and can drive the saw blade body 1 to swing back and forth when the crank-link mechanism rotates. In still other embodiments, the driving mechanism is a connecting rod hinged on the saw blade body 1, and the connecting rod reciprocates to drive the saw blade body 1 to swing back and forth. In this embodiment, the driving mechanism is a cam 23, and the cam 23 can cooperate with the power receiving portion 6 to drive the saw blade body 1 to swing back and forth around the first position. During the rotation of the cam 23, the cam 23 alternately pushes the two fork legs of the fork, so that the saw blade body 1 reciprocates around the rotating shaft 7.
As shown in fig. 5, in the embodiment, the mounting seat includes a seat body 27 and a pressing cover, the pressing cover includes a cover body 22 and a connecting shaft 24, the pressing cover is detachably connected to the seat body 27 through the connecting shaft 24, the sheath-protecting saw blade 10 is mounted between the cover body 22 and the seat body 27 of the pressing cover through the connecting shaft, and the cover body 22 presses the sheath 2 of the sheath-protecting saw blade 10 onto the seat body 27. Specifically, pedestal 27 is last to be provided with erection column 28 along the axial of connecting axle 24, protects to have seted up the fixed orifices on the sheath 2 corresponds the position, protects sheath saw bit 10 and installs on erection column 28 through the fixed orifices, and erection column 28 wears to establish in the fixed orifices, carries on spacingly to saw bit body 1. The number of the mounting posts 28 is at least two, and the two mounting posts 28 are spaced apart from each other to prevent the sheath saw blade 10 from rotating. In this embodiment, the saw head includes a housing 21, the mounting seat is fixedly connected to the housing 21, and the driving mechanism is installed in the housing 21, and the housing 21 maintains a relative position with the sheath saw blade 10.
Specifically, as shown in fig. 4, the connecting shaft 24 is slidably disposed in the seat body 27 along the axial direction thereof, a spring 25 is disposed in the mounting seat, the spring 25 presses the cover body 22 against the sheath 2 along the axial direction of the connecting shaft 24, a pressing protrusion 26 exposed from the seat body 27 is disposed on the connecting shaft 24, and the protruding direction of the pressing protrusion 26 is opposite to the pressing direction of the spring 25. When the sheath protection saw blade 10 is mounted or dismounted, the pressing protrusion 26 can be pressed to compress the spring 25, so that the pressing cover is lifted along the axial direction of the connecting shaft 24, and the pressing protrusion 26 lifts the pressing cover through pressing, so that the one-hand operation is facilitated, and the mounting or dismounting of the sheath protection saw blade 10 is facilitated.
The saw blade body 1 is provided with the through groove 13, the through groove 13 is used for avoiding the connecting shaft 24 of the gland, and in the swinging direction of the saw blade body 1, the size of the through groove 13 is larger than that of the gland connecting shaft 24, so that the interference of the saw blade body 1 and the connecting shaft 24 during swinging is avoided.
To sum up, the embodiment provides a reciprocal saw bit and saw cutting aircraft nose of sheath are protected in area, because saw bit body 1 is connected in protecting sheath 2 at primary importance, protect sheath 2 can provide the support for saw bit body 1 from the primary importance, the distance between cutting portion 5 and the strong point has been reduced, when saw bit body 1 cuts, the moment that saw bit body 1 receives has been reduced, make saw bit body 1 non-deformable when the cutting, the stability when having increased saw bit body 1 and cutting, guarantee saw bit body 1's cutting efficiency, the life of saw bit body 1 has been prolonged.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A reciprocating saw blade with a sheath, comprising:
the saw blade comprises a saw blade body, wherein a cutting part is arranged at the head end of the saw blade body, and a power access part is arranged at the tail end of the saw blade body;
the sheath is sleeved on the saw blade body, the cutting part extends out of one end of the sheath, and the power access part extends out of the other end of the sheath; wherein, the first and the second end of the pipe are connected with each other,
the saw blade body is hinged with the protective sheath, the power access part is connected with power, and the saw blade body is driven by the power to swing back and forth around the hinged position.
2. The reciprocating saw blade with a sheath of claim 1, wherein: the saw blade body comprises a first arm part extending along a first direction and a second arm part extending along a second direction, the cutting part and the power access part are respectively arranged on the first arm part and the second arm part, and an included angle is formed between the first arm part and the second arm part.
3. The reciprocating saw blade with the sheath of claim 2, wherein: the tail end of the saw blade body is provided with two separated fork legs, the two fork legs extend to the power end to form a shifting fork, and the shifting fork is used for connecting power.
4. The reciprocating saw blade with the sheath of claim 2, wherein: and the tail end of the saw blade body is provided with an avoiding hole or an avoiding groove.
5. The reciprocating saw blade with a sheath according to any one of claims 1 to 4, wherein: the tail end of the protecting sheath corresponding to the saw blade body is provided with a fixing hole, and the fixing hole is used for fixing the protecting sheath.
6. The reciprocating saw blade with a sheath of claim 5, wherein: the protective sheath is hinged to the saw blade body at a first position, a hinge hole and a rotating shaft are arranged corresponding to the first position respectively, and the protective sheath is hinged to the saw blade body through the rotating shaft.
7. The reciprocating saw blade with the sheath of claim 6, wherein: the saw blade is characterized in that a positioning step is arranged on the rotating shaft, a positioning ring is further sleeved on the rotating shaft, the positioning step and the positioning ring are arranged oppositely along the axis direction of the rotating shaft, and the saw blade body and the protective sheath are positioned in the axis direction of the rotating shaft.
8. A sawing head, comprising: a mount, a drive mechanism, and the reciprocating saw blade with a sheathing of any one of claims 1-7; wherein the content of the first and second substances,
the sheath is fixed on the mounting seat, and the driving mechanism is connected with the power access part and used for applying reciprocating swing power to the power access part.
9. The sawing head according to claim 8, wherein: the mounting seat comprises a seat body, a gland and a connecting shaft, the gland is detachably connected to the seat body through the connecting shaft, and the reciprocating saw blade with the protective sheath is mounted between the cover body of the gland and the seat body through the connecting shaft.
10. The sawing head according to claim 9, wherein: the connecting shaft is arranged in the base body in a sliding mode along the axial direction of the connecting shaft, a spring is arranged in the mounting base, the spring presses the cover body onto the protective sheath along the axial direction of the connecting shaft, a pressing bulge exposed out of the base body is arranged on the connecting shaft, and the direction of the pressing bulge is opposite to the pressing direction of the spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221352174.0U CN218356302U (en) | 2022-05-31 | 2022-05-31 | Reciprocating saw blade with protective sheath and saw cutting machine head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221352174.0U CN218356302U (en) | 2022-05-31 | 2022-05-31 | Reciprocating saw blade with protective sheath and saw cutting machine head |
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| CN218356302U true CN218356302U (en) | 2023-01-24 |
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| CN202221352174.0U Active CN218356302U (en) | 2022-05-31 | 2022-05-31 | Reciprocating saw blade with protective sheath and saw cutting machine head |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116077130A (en) * | 2023-03-07 | 2023-05-09 | 首都医科大学附属北京友谊医院 | Swing saw under arthroscope |
-
2022
- 2022-05-31 CN CN202221352174.0U patent/CN218356302U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116077130A (en) * | 2023-03-07 | 2023-05-09 | 首都医科大学附属北京友谊医院 | Swing saw under arthroscope |
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