CN215129530U - Medical bone saw of reciprocating motion - Google Patents
Medical bone saw of reciprocating motion Download PDFInfo
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- CN215129530U CN215129530U CN202121686397.6U CN202121686397U CN215129530U CN 215129530 U CN215129530 U CN 215129530U CN 202121686397 U CN202121686397 U CN 202121686397U CN 215129530 U CN215129530 U CN 215129530U
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Abstract
A reciprocating medical bone saw comprises a saw blade, wherein the front end of a reciprocating shaft sleeve is provided with an end cover, a mounting plate and a swash plate shaft fixing sleeve are arranged in the end cover, the rear end of a reciprocating shaft is arranged on the swash plate shaft fixing sleeve, the front end of the reciprocating shaft sequentially penetrates through the mounting plate and the end cover, the front end part of the reciprocating shaft is connected with the saw blade through a chuck, a transmission post is arranged on the reciprocating shaft between the mounting plate and the swash plate shaft fixing sleeve, a through groove is radially processed on the transmission post, the side wall of the through groove is provided with a spherical notch, a steel ball is arranged in the groove, the steel ball is provided with an elastic element, a swash plate shaft is arranged on one side of the reciprocating shaft, one end of the swash plate shaft is arranged on the mounting plate, the other end of the swash plate shaft penetrates through the swash plate shaft fixing sleeve and is provided with a driven gear at the end part, the middle part of the swash plate shaft, which is a central shaft, is obliquely provided with a disc, the disc is arranged in the through groove of the transmission post, the bottom surface of the elastic element is tightly attached to the disc surface of the disc, the back end of the reciprocating shaft sleeve is provided with the transmission shaft fixing sleeve, the transmission shaft fixing sleeve is provided with a transmission shaft, and the end part of the transmission shaft is provided with a driving gear meshed with the driven gear.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to bone saw.
Background
The reciprocating bone saw is a tool used for carrying out bone resection in orthopedic surgery, the volume of the currently used reciprocating saw is relatively large, the noise temperature rise is high, the mechanism for realizing reciprocating motion is complex, high requirements are met in the processes of part processing and product assembly, the production cost is increased to a certain extent, and the performance of the product cannot be effectively guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the shortcoming of current reciprocating bone saw is overcome, provide a medical bone saw of reciprocating motion that reasonable in design, small, easy operation, work efficiency are high.
The technical scheme for solving the technical problems is as follows: a reciprocating medical bone saw comprises a saw blade reciprocating shaft sleeve, wherein the front end of the saw blade reciprocating shaft sleeve is provided with an end cover, a mounting plate and a swash plate shaft fixing sleeve are arranged in a reciprocating shaft sleeve, the rear end of a reciprocating shaft is arranged on the swash plate shaft fixing sleeve, the front end of the reciprocating shaft sequentially penetrates through the mounting plate and the end cover to extend out of the end cover, the front end of the reciprocating shaft is connected with a saw blade through a chuck, the center line of the reciprocating shaft is superposed with the center line of the reciprocating shaft sleeve, a transmission column is arranged on the reciprocating shaft between the mounting plate and the swash plate shaft fixing sleeve, the diameter of the transmission column is larger than that of the reciprocating shaft, the transmission column is connected with the reciprocating shaft into a whole, a through groove is radially processed on the transmission column, the side wall of the through groove is provided with a spherical notch, a steel ball is arranged in the groove, an elastic element is arranged on the steel ball, a swash plate shaft is arranged on one side of the reciprocating shaft, one end of the swash plate shaft is arranged on the mounting plate, the other end of the swash plate shaft penetrates through the swash plate shaft fixing sleeve and a driven gear is arranged at the end part of the swash plate shaft, the central line of the swash plate shaft is parallel to the central line of the reciprocating shaft, the middle part of the swash plate shaft, which is the central shaft, is obliquely provided with a disc, the disc of the swash plate shaft is positioned in a through groove of a transmission column on the reciprocating shaft, the bottom surface of an elastic element is tightly attached to the disc surface, the rear end of the reciprocating shaft sleeve is provided with a transmission shaft fixing sleeve, a transmission shaft is arranged on the transmission shaft fixing sleeve, and the end part of the transmission shaft positioned in the reciprocating shaft sleeve is provided with a driving gear meshed with a driven gear.
As a preferred technical scheme, two side walls of the through groove of the transmission column on the reciprocating shaft are respectively provided with a segment-shaped groove, the two grooves are distributed in a central symmetry way, steel balls are arranged in the grooves, elastic elements are arranged on the steel balls and are positioned on two sides of a disc of the swash plate shaft, and the bottom surfaces of the two elastic elements are tightly attached to the disc surface of the disc.
As a preferable technical scheme, a plane is processed on the side wall of the rear end of the reciprocating shaft, and a reciprocating shaft mounting hole with a corresponding structure is processed on the swash plate shaft fixing sleeve.
As a preferred technical scheme, bearings are arranged between the swash plate shaft and the mounting plate as well as between the swash plate shaft and the swash plate shaft fixing sleeve; and a bearing is arranged between the transmission shaft and the transmission shaft fixing sleeve.
As a preferable technical scheme, the inclination angle of the disc on the swash plate shaft is 70-80 degrees.
The utility model has the advantages as follows:
the utility model discloses a processing has the transmission post on the reciprocating shaft, radial processing has logical groove on the transmission post, respectively processing has a segment shape recess on the wall of logical groove both sides, two recesses are central symmetry and distribute, install the steel ball in the recess, install elastic component on the steel ball, the central part slope that the swash plate axle is the center pin is provided with the disc, the disc links as an organic whole with the center pin, the disc of swash plate axle is located between two elastic component in the logical groove of transmission post on the reciprocating shaft, two elastic component bottom surfaces hug closely on the disc quotation, because the central line of disc on the swash plate axle becomes certain angle with the center pin axis, the both sides face of disc can produce certain displacement in the axial in the rotation process of center pin, the elastic component terminal surface closely cooperates with both ends face all the time in the disc rotation process, the displacement volume of disc is transmitted to the reciprocating shaft through the elastic component who installs on the steel ball, and then realize reciprocating shaft in axial removal, the transmission shaft rotates the round once, realizes a reciprocating motion, makes the utility model has the advantages of small, simple structure, work efficiency are high.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view a-a of fig. 1.
Fig. 3 is a sectional view B-B of fig. 1.
Fig. 4 is a schematic view of the reciprocating shaft 6 of fig. 1.
Fig. 5 is a schematic view of the swash plate shaft 9 of fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, but the present invention is not limited to the following embodiments.
In fig. 1 to 5, the medical bone saw with reciprocating motion of the present embodiment is formed by connecting a saw blade 1, a chuck 2, an end cap 3, a reciprocating shaft sleeve 4, a mounting plate 5, a reciprocating shaft 6, a steel ball 7, an elastic element 8, a swash plate shaft 9, a swash plate shaft fixing sleeve 10, a driven gear 11, a driving gear 12, a transmission shaft fixing sleeve 13, a transmission shaft 14, and a transmission column 15.
The front end of a reciprocating shaft sleeve 4 is connected with an end cover 3 in a threaded manner, a mounting plate 5 and a swash plate shaft fixing sleeve 10 are fixedly mounted in the reciprocating shaft sleeve 4, the rear end of a reciprocating shaft 6 is mounted on the swash plate shaft fixing sleeve 10, a plane is processed on the side wall of the rear end of the reciprocating shaft 6, a reciprocating shaft mounting hole with a corresponding structure is processed on the swash plate shaft fixing sleeve 10, the reciprocating shaft 6 can only axially move, the front end of the reciprocating shaft 6 sequentially penetrates through the mounting plate 5 and the end cover 3 to extend out of the end cover 3, the front end of the reciprocating shaft 6 is fixedly connected with a saw blade 1 through a chuck 2, the central line of the reciprocating shaft 6 is superposed with the central line of the reciprocating shaft sleeve 4, a transmission column 15 is processed on the reciprocating shaft 6 between the mounting plate 5 and the swash plate shaft fixing sleeve 10, the diameter of the transmission column 15 is larger than that of the reciprocating shaft 6, the transmission column 15 and the reciprocating shaft 6 are connected into a whole, a through groove is radially processed on the transmission column 15, and a spherical notch is respectively processed on two side walls of the through groove, two grooves are distributed in central symmetry, steel balls 7 are arranged in the grooves, elastic elements 8 are arranged on the steel balls 7 to enable the elastic elements 8 to rotate at different angles, a swash plate shaft 9 is arranged on one side of a reciprocating shaft 6, one end of the swash plate shaft 9 is arranged on a mounting plate 5, the other end of the swash plate shaft 9 penetrates through a swash plate shaft fixing sleeve 10, a driven gear 11 is arranged at the end part of the swash plate shaft, bearings are arranged between the swash plate shaft 9 and the mounting plate 5 and the swash plate shaft fixing sleeve 10, the central line of the swash plate shaft 9 is parallel to the central line of the reciprocating shaft 6, a disc is obliquely arranged in the middle of the central shaft of the swash plate shaft 9, the disc is connected with the central shaft into a whole, the diameter of the disc is larger than that of the central shaft, the inclination angle of the disc is 75 degrees, also can be 70 degrees, also can be 80 degrees, the disc of the swash plate shaft 9 is arranged between the two elastic elements 8 in a through groove of a transmission column 15 on the reciprocating shaft 6, the bottom surfaces of the two elastic elements 8 are tightly attached to the disc surface, the back end of the reciprocating shaft sleeve 4 is provided with a transmission shaft fixing sleeve 13, the transmission shaft fixing sleeve 13 is connected with a transmission shaft 14 through a bearing, the end part of the transmission shaft 14 positioned in the reciprocating shaft sleeve 4 is fixedly provided with a driving gear 12 meshed with a driven gear 11, the end part of the transmission shaft 14 positioned outside the reciprocating shaft sleeve 4 is connected with the end of a bone saw motor, the bone saw motor drives the transmission shaft 14 to rotate, the transmission shaft 14 drives the swash plate shaft 9 to rotate through the pair of the driving gear 12 and the driven gear 11, because the central line of a disc on the swash plate shaft 9 forms a certain angle with the axis of a central shaft, the two side surfaces of the disc can generate certain displacement in the axial direction in the rotating process of the central shaft, the end surface of the elastic element 8 is always tightly matched with the two end surfaces in the rotating process of the disc, the displacement of the disc is transmitted to the reciprocating shaft 6 through the elastic element 8 arranged on the steel ball 7, and further realizes the axial movement of the reciprocating shaft 6, the reciprocating shaft 6 drives the saw blade 1 to axially reciprocate after the transmission shaft 14 rotates once.
Claims (5)
1. A medical bone saw of reciprocating motion, includes saw bit (1), its characterized in that: an end cover (3) is arranged at the front end of a reciprocating shaft sleeve (4), a mounting plate (5) and a swash plate shaft fixing sleeve (10) are arranged in the reciprocating shaft sleeve (4), the rear end of a reciprocating shaft (6) is arranged on the swash plate shaft fixing sleeve (10), the front end of the reciprocating shaft sequentially penetrates through the mounting plate (5) and the end cover (3) and extends out of the end cover (3), the front end of the reciprocating shaft (6) is connected with a saw blade (1) through a chuck (2), the central line of the reciprocating shaft (6) is superposed with the central line of the reciprocating shaft sleeve (4), a transmission column (15) is arranged on the reciprocating shaft (6) between the mounting plate (5) and the swash plate shaft fixing sleeve (10), the diameter of the transmission column (15) is larger than that of the reciprocating shaft (6), the transmission column (15) is connected with the reciprocating shaft (6) into a whole, a through groove is radially processed on the transmission column (15), a spherical notch is arranged on the side wall of the through groove, and a steel ball (7) is arranged in the groove, an elastic element (8) is arranged on the steel ball (7), an inclined disc shaft (9) is arranged at one side of the reciprocating shaft (6), one end of the inclined disc shaft (9) is arranged on the mounting plate (5), the other end of the driving shaft penetrates through an inclined disc shaft fixing sleeve (10) and is provided with a driven gear (11) at the end part, the central line of an inclined disc shaft (9) is parallel to the central line of a reciprocating shaft (6), a disc is obliquely arranged in the middle of the inclined disc shaft (9) which is a central shaft, the disc of the inclined disc shaft (9) is positioned in a through groove of a transmission column (15) on the reciprocating shaft (6), the bottom surface of an elastic element (8) is tightly attached to the disc surface, a transmission shaft fixing sleeve (13) is arranged at the rear end of the reciprocating shaft sleeve (4), a transmission shaft (14) is arranged on the transmission shaft fixing sleeve (13), and a driving gear (12) meshed with the driven gear (11) is arranged at the end part of the transmission shaft (14) in the reciprocating shaft sleeve (4).
2. The reciprocating medical bone saw of claim 1, wherein: two spherical segment-shaped grooves are respectively formed in two side walls of a through groove of a transmission column (15) on the reciprocating shaft (6), the two grooves are distributed in a central symmetry mode, steel balls (7) are arranged in the grooves, elastic elements (8) are arranged on the steel balls (7), the two elastic elements (8) are located on two sides of a disc of the swash shaft (9), and the bottom surfaces of the two elastic elements (8) are tightly attached to the disc surface of the disc.
3. The reciprocating medical bone saw of claim 1, wherein: the side wall of the rear end of the reciprocating shaft (6) is provided with a plane, and the swash plate shaft fixing sleeve (10) is provided with a reciprocating shaft mounting hole with a corresponding structure.
4. The reciprocating medical bone saw of claim 1, wherein: bearings are arranged between the swash plate shaft (9) and the mounting plate (5) and between the swash plate shaft and the swash plate shaft fixing sleeve (10); and a bearing is arranged between the transmission shaft (14) and the transmission shaft fixing sleeve (13).
5. The reciprocating medical bone saw of claim 1, wherein: the inclination angle of the disc on the swash plate shaft (9) is 70-80 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121686397.6U CN215129530U (en) | 2021-07-23 | 2021-07-23 | Medical bone saw of reciprocating motion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121686397.6U CN215129530U (en) | 2021-07-23 | 2021-07-23 | Medical bone saw of reciprocating motion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215129530U true CN215129530U (en) | 2021-12-14 |
Family
ID=79393688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121686397.6U Active CN215129530U (en) | 2021-07-23 | 2021-07-23 | Medical bone saw of reciprocating motion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215129530U (en) |
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2021
- 2021-07-23 CN CN202121686397.6U patent/CN215129530U/en active Active
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