CN215349249U - Right-angle drill - Google Patents
Right-angle drill Download PDFInfo
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- CN215349249U CN215349249U CN202120073907.6U CN202120073907U CN215349249U CN 215349249 U CN215349249 U CN 215349249U CN 202120073907 U CN202120073907 U CN 202120073907U CN 215349249 U CN215349249 U CN 215349249U
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Abstract
A right-angle drill comprises a transmission rod, a handle, a quick-mounting rod, a worm gear quick-changing head and a drill bit; the handle is rotationally connected with a quick-mounting rod; one end of the fast-assembling rod is arranged to be a prism, and the other end of the fast-assembling rod is connected with a transmission rod along the axis; the transmission rod is arranged in the connecting pipe; the connecting pipe is connected to the handle; the connecting pipe is connected with a worm gear quick-change head; a worm meshed with a worm wheel of the worm wheel quick-change head is arranged on the transmission rod; a drill bit is arranged on an output shaft of the worm gear quick-change head; according to the utility model, the worm is meshed with the worm wheel, so that right-angle transmission is realized, the incision can be smaller in the process of drilling the bone tunnel, the damage to soft tissues is reduced, the structure is simple, the occupied space is smaller, and the traction to the soft tissues is reduced.
Description
Technical Field
The utility model relates to the field of right-angle drills, in particular to a right-angle drill.
Background
Sternum fracture, which is deep fracture of human body, is caused by the blockage of surrounding soft tissues or surrounding materials at the relatively narrow space of the fracture, and cannot drill out the required bone tunnel, so the conventional straight drill cannot meet the operation requirements; the conventional right-angle drill is large in submission, large in incision in the operation process, and easy to pull soft tissues to damage the soft tissues.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides the right-angle drill, which reduces the traction on soft tissues, ensures that the incision can be smaller and reduces the damage on the soft tissues.
The utility model provides the following technical scheme:
a right-angle drill comprises a transmission rod, a handle, a quick-mounting rod, a worm gear quick-changing head and a drill bit; the handle is rotationally connected with a quick-mounting rod; one end of the fast-assembling rod is arranged to be a prism, and the other end of the fast-assembling rod is connected with a transmission rod along the axis; the transmission rod is arranged in the connecting pipe; the connecting pipe is connected to the handle; the connecting pipe is connected with a worm gear quick-change head; a worm meshed with a worm wheel of the worm wheel quick-change head is arranged on the transmission rod; the output shaft of the worm gear quick-change head is provided with a drill bit.
Preferably, the connecting pipe is in threaded connection with the handle.
Preferably, one end of the fast-assembling rod is provided with a hole along the axis; the transmission rod is arranged in a hole of the fast-assembly rod and connected with the fast-assembly rod through a first positioning pin.
Preferably, one end of the quick-assembly rod, which is a prism, is connected with a tail cap; a quick-mounting inner sleeve matched with the quick-mounting rod is arranged in the tail cap; the quick-mounting inner sleeve is fixed on the tail cap through a second positioning pin.
Preferably, the quick-assembly rod is fixed in the handle through a tightening nut; the tightening nut is in threaded connection with the handle, and the tightening nut extends out of the handle; the tightening nut is provided with an annular groove; a spring column is arranged on the tail cap along the radial direction of the quick-mounting rod; one side of the spring post is limited in the annular groove.
Preferably, the worm is rotatably arranged in the worm wheel quick-change head through a second bearing; the worm is fixed on the transmission rod through a third positioning pin.
Preferably, the transmission rod is rotatably connected with the handle through a first bearing.
Preferably, the connection mode of the connecting pipe and the worm gear quick-change head is welding, and the welding part is polished smoothly.
Compared with the prior art, the utility model has the following advantages and effects:
according to the utility model, the worm is meshed with the worm wheel, so that right-angle transmission is realized, the incision can be smaller in the process of drilling the bone tunnel, the damage to soft tissues is reduced, the structure is simple, the occupied space is smaller, and the traction to the soft tissues is reduced.
The handle of the utility model is rotationally connected with a quick-mounting rod; the quick-mounting rod is characterized in that one end of the quick-mounting rod is arranged to be a prism, the quick-mounting rod is connected with the worm gear quick-changing head through a transmission rod, the quick-mounting rod is driven to rotate through a tail cap or an electric rotating rod, and the operation is simple and convenient.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a front view of a right angle drill of the present invention;
fig. 2 is a partially enlarged view of fig. 1 in the present invention.
In the figure: the quick-change worm gear comprises a head sleeve 1, a worm 2, a second bearing 3, a connecting pipe 4, a transmission rod 5, a handle 6, a first bearing 7, a third bearing 8, a tightening nut 9, an annular groove 91, a quick-change rod 10, a tail cap 11, a quick-change inner sleeve 12, a second positioning pin 13, a spring column 14, a first positioning pin 15, a third positioning pin 16 and a worm gear quick-change head 17.
Detailed Description
The specific implementation mode of the utility model is as follows:
referring to the attached drawings, the right-angle drill comprises a transmission rod 5, a handle 6, a quick-assembly rod 10, a worm gear quick-change head 17 and a drill bit; a quick-mounting rod 10 is rotatably connected in the handle 6 through a third bearing 8; one end of the fast-assembling rod 10 is a prism, and the other end of the fast-assembling rod 10 is connected with a transmission rod 5 along the axis; one end of the fast-assembling rod 10 is provided with a hole along the axis; the transmission rod 5 is arranged in a hole of the quick-assembly rod 10, and the transmission rod 5 is connected with the quick-assembly rod 10 through a first positioning pin 15; the transmission rod 5 is arranged in the connecting pipe 4; the transmission rod 5 is rotatably connected with the handle 6 through a first bearing 7; the connecting pipe 4 is in threaded connection with the handle 6.
The connecting pipe 4 is connected with a worm gear quick-change head 17; the connecting pipe 4 is welded with the head sleeve 2 of the worm gear quick-change head 17, and the welding part is polished smoothly; the transmission rod 5 is provided with a worm 2 meshed with a worm wheel of the worm wheel quick-change head 17; the worm 2 is rotatably arranged in the worm wheel quick-change head 17 through a second bearing 3; the worm 2 is fixed on the transmission rod 5 through a third positioning pin 16; the output shaft of the worm gear quick-change head 17 is provided with a drill bit.
One end of the quick-assembly rod 10, which is a prism, is connected with a tail cap 11; a fast-assembly inner sleeve 12 matched with the fast-assembly rod 10 is arranged in the tail cap 11; the fast-assembly inner sleeve 12 is fixed on the tail cap 11 through a second positioning pin 13; the quick-assembling rod 10 is fixed in the handle 6 through a tightening nut 9; the tightening nut 9 is in threaded connection with the handle 6, and the tightening nut 9 extends out of the handle 6; the tightening nut 9 is provided with an annular groove 91; a spring column 14 is arranged on the tail cap 11 along the radial direction of the quick-mounting rod; the spring post 14 is confined on one side within an annular groove 91.
The working principle is as follows: the worker manually rotates the tail cap 11, the tail cap 11 rotates the quick-assembly rod 10 through the quick-assembly inner sleeve 12, the quick-assembly rod 10 drives the transmission rod 5 to rotate, the transmission rod 5 drives the cutter to rotate through the engagement of the worm wheel quick-change head 17 and the worm 2, and a needed bone tunnel is drilled.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A right angle drill which is characterized in that: comprises a transmission rod, a handle, a quick-mounting rod, a worm gear quick-changing head and a drill bit; the handle is rotationally connected with a quick-mounting rod; one end of the fast-assembling rod is arranged to be a prism, and the other end of the fast-assembling rod is connected with a transmission rod along the axis; the transmission rod is arranged in the connecting pipe; the connecting pipe is connected to the handle; the connecting pipe is connected with a worm gear quick-change head; a worm meshed with a worm wheel of the worm wheel quick-change head is arranged on the transmission rod; the output shaft of the worm gear quick-change head is provided with a drill bit.
2. A right angle drill as claimed in claim 1, wherein: the connecting pipe is in threaded connection with the handle.
3. A right angle drill as claimed in claim 1, wherein: one end of the fast-assembling rod is provided with a hole along the axis; the transmission rod is arranged in a hole of the fast-assembly rod and connected with the fast-assembly rod through a first positioning pin.
4. A right angle drill as claimed in claim 1, wherein: one end of the quick-mounting rod, which is a prism, is connected with a tail cap; a quick-mounting inner sleeve matched with the quick-mounting rod is arranged in the tail cap; the quick-mounting inner sleeve is fixed on the tail cap through a second positioning pin.
5. A right angle drill as claimed in claim 4, wherein: the quick-mounting rod is fixed in the handle through a tightening nut; the tightening nut is in threaded connection with the handle, and the tightening nut extends out of the handle; the tightening nut is provided with an annular groove; a spring column is arranged on the tail cap along the radial direction of the quick-mounting rod; one side of the spring post is limited in the annular groove.
6. A right angle drill as claimed in claim 1, wherein: the worm is rotatably arranged in the worm wheel quick-change head through a second bearing; the worm is fixed on the transmission rod through a third positioning pin.
7. A right angle drill as claimed in claim 1, wherein: the transmission rod is rotatably connected with the handle through a first bearing.
8. A right angle drill as claimed in claim 1, wherein: the connecting pipe and the worm wheel quick-change head are connected in a welding mode, and the welding part is polished smoothly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120073907.6U CN215349249U (en) | 2021-01-12 | 2021-01-12 | Right-angle drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120073907.6U CN215349249U (en) | 2021-01-12 | 2021-01-12 | Right-angle drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215349249U true CN215349249U (en) | 2021-12-31 |
Family
ID=79620923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120073907.6U Active CN215349249U (en) | 2021-01-12 | 2021-01-12 | Right-angle drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215349249U (en) |
-
2021
- 2021-01-12 CN CN202120073907.6U patent/CN215349249U/en active Active
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