阅读说明：本技术 一次性自停限位颅骨钻夹头 (Disposable self-stop limiting skull drill chuck ) 是由 裴晓宏 张国峰 谢行 李瑛� 张丽君 刘国胜 于 2020-06-09 设计创作，主要内容包括：本发明提供一次性自停限位颅骨钻夹头,包括：后座、夹持机构和限位机构,夹头内前端部沿周向设置有多个夹块,相邻夹块之间通过撑开弹簧连接,尾帽与夹头螺纹连接,尾帽中心位置设置有第一通孔,转换器与尾帽螺纹连接；后座上端开设有第二通孔,中心轴设置有后座内,中心轴一端穿过第二通孔至后座外,中心轴另一端设置有安装杆,转换器对应安装杆设置有安装槽,安装杆设置于安装槽内,套筒内设置有导管。如上所述,本发明的一次性自停限位颅骨钻夹头,解决现有技术中电动骨钻缺少既可以自停又带有限位功能的问题,设计合理,适于生产和推广应用。(The invention provides a disposable self-stop limiting skull drill chuck, which comprises: the front end part in the chuck is circumferentially provided with a plurality of clamping blocks, adjacent clamping blocks are connected through a spreading spring, a tail cap is in threaded connection with the chuck, a first through hole is formed in the center of the tail cap, and the converter is in threaded connection with the tail cap; the second through-hole has been seted up to the back seat upper end, and in the center pin was provided with the back seat, outside second through-hole to back seat was passed to center pin one end, the center pin other end was provided with the installation pole, and the converter corresponds the installation pole and is provided with the mounting groove, and the installation pole sets up in the mounting groove, is provided with the pipe in the sleeve. As mentioned above, the disposable automatic stop limiting skull drill chuck of the invention solves the problem that the electric bone drill in the prior art is lack of a function of automatic stop and limiting, has reasonable design and is suitable for production, popularization and application.)

1. A disposable self-stop limiting skull drill chuck is characterized by comprising: a back seat, a clamping mechanism and a limiting mechanism, wherein the clamping mechanism comprises a chuck, a clamping block, a spreading spring, a pressurizing head, a tail cap and a converter, a plurality of clamping blocks are arranged at the front end part in the clamping head along the circumferential direction, the adjacent clamping blocks are connected through the spreading spring, the pressurizing head is arranged above the clamping block, a first internal thread is arranged on the inner side wall of the chuck, the outer side wall of the tail cap is provided with a first external thread matched with the first internal thread, the tail cap is in threaded connection with the chuck through the matching of the first internal thread and the first external thread, a first through hole is arranged at the central position of the tail cap, a second internal thread is arranged on the inner side wall of the first through hole, the outer side wall of the converter is provided with a second external thread matched with the second internal thread, and the converter is in threaded connection with the tail cap through the matching of the second internal thread and the second external thread;

an outer housing is sleeved outside the rear seat; the limiting mechanism comprises an installation rod, a guide pipe, a sleeve, a limiting switch, a guide pipe spring and a sleeve, a central shaft is arranged in the rear seat, the central shaft and the rear seat are coaxially arranged, a second through hole is formed in the upper end of the rear seat, one end of the central shaft penetrates through the second through hole to the outside of the rear seat, the installation rod is arranged at the other end of the central shaft, the converter is provided with an installation groove corresponding to the installation rod, the installation rod is arranged in the installation groove and can slide along the installation groove, the sleeve is arranged at the upper end of the tail cap, the guide pipe is arranged in the sleeve, the limiting switch comprises a limiting block and a limiting rod, a first elongated sliding hole is formed in the sleeve, a second elongated sliding hole is formed in the rear seat corresponding to the first sliding hole, and a third elongated sliding hole is formed in the outer housing corresponding to the second sliding hole, the bottom of the guide pipe is connected with one connecting end of the limiting rod, the other end of the limiting rod sequentially penetrates through the first sliding hole, the second sliding hole and the third sliding hole to the outside of the outer housing, the other end of the limiting rod is connected with the limiting block, a third through hole is formed in the limiting block, a third internal thread is formed in the third through hole, a bolt is arranged in the third through hole and is in threaded connection with the third through hole, and the outer housing is provided with a sliding groove corresponding to the bolt;

the other end of the guide pipe extends out of the sleeve to be connected with the inner side wall of the rear seat, the guide pipe spring is arranged on the outer side of the guide pipe, one end of the guide pipe spring is connected with the sleeve, and the other end of the guide pipe spring is connected with the guide pipe.

2. The disposable self-stop and limit skull drill chuck according to claim 1, wherein the outer surface of the chuck is provided with knurling.

3. The disposable self-stop limiting skull drill chuck according to claim 1, wherein a rotary bearing is arranged in the second through hole, and the central shaft is connected with the second through hole through the rotary bearing.

4. The disposable self-stop and limit skull drill chuck according to claim 1, wherein three clamping blocks are selected.

Technical Field

The invention relates to the field of surgical operation devices, in particular to a disposable self-stopping limiting skull drill chuck.

Background

The electric bone drill for surgical operation is a power device for providing mechanical power to carry out bone tissue operation, through years of development, the function is gradually developed into multiple functions from one function of one machine in the prior art, the traditional nickel-hydrogen battery is developed into a lithium battery from the aspect of power, so that safety factors are mainly considered from the neurosurgery operation, students in the operation can consider using the power device with certain safety protection function, such as a handheld electric bone drill with an automatic stop function, the bone drill is characterized in that a special mechanical structure is mainly designed on a drill bit, and once the drill bit penetrates through a skull during operation, the support point is not arranged below the drill bit, and the bone drill can quickly lose power to stop rotating; on the other hand, the skull drill with the limit function also has certain safety, and the cutting depth of the drill bit is adjusted mainly through a mechanical structure, so that the problem that the operation is influenced by the fact that the drill bit is over-drilled under the condition that the depth is known before the operation is solved, and the structure is designed on the drill bit more. At present, the electric bone drill can not stop automatically and has a limiting function.

Disclosure of Invention

In view of the shortcomings of the prior art, the invention aims to provide a disposable self-stop limiting skull drill chuck, which is used for solving the problem that an electric bone drill in the prior art is lack of a limiting function which can be self-stopped.

In order to achieve the above objects and other related objects, the present invention provides a disposable self-stop limit skull drill chuck, comprising: a back seat, a clamping mechanism and a limiting mechanism, wherein the clamping mechanism comprises a chuck, a clamping block, a spreading spring, a pressurizing head, a tail cap and a converter, a plurality of clamping blocks are arranged at the front end part in the clamping head along the circumferential direction, the adjacent clamping blocks are connected through the spreading spring, the pressurizing head is arranged above the clamping block, a first internal thread is arranged on the inner side wall of the chuck, the outer side wall of the tail cap is provided with a first external thread matched with the first internal thread, the tail cap is in threaded connection with the chuck through the matching of the first internal thread and the first external thread, a first through hole is arranged at the central position of the tail cap, a second internal thread is arranged on the inner side wall of the first through hole, the outer side wall of the converter is provided with a second external thread matched with the second internal thread, and the converter is in threaded connection with the tail cap through the matching of the second internal thread and the second external thread;

an outer housing is sleeved outside the rear seat; the limiting mechanism comprises an installation rod, a guide pipe, a sleeve, a limiting switch, a guide pipe spring and a sleeve, a central shaft is arranged in the rear seat, the central shaft and the rear seat are coaxially arranged, a second through hole is formed in the upper end of the rear seat, one end of the central shaft penetrates through the second through hole to the outside of the rear seat, the installation rod is arranged at the other end of the central shaft, the converter is provided with an installation groove corresponding to the installation rod, the installation rod is arranged in the installation groove and can slide along the installation groove, the sleeve is arranged at the upper end of the tail cap, the guide pipe is arranged in the sleeve, the limiting switch comprises a limiting block and a limiting rod, a first elongated sliding hole is formed in the sleeve, a second elongated sliding hole is formed in the rear seat corresponding to the first sliding hole, and a third elongated sliding hole is formed in the outer housing corresponding to the second sliding hole, the bottom of the guide pipe is connected with one connecting end of the limiting rod, the other end of the limiting rod sequentially penetrates through the first sliding hole, the second sliding hole and the third sliding hole to the outside of the outer housing, the other end of the limiting rod is connected with the limiting block, a third through hole is formed in the limiting block, a third internal thread is formed in the third through hole, a bolt is arranged in the third through hole and is in threaded connection with the third through hole, and the outer housing is provided with a sliding groove corresponding to the bolt;

the other end of the guide pipe extends out of the sleeve to be connected with the inner side wall of the rear seat, the guide pipe spring is arranged on the outer side of the guide pipe, one end of the guide pipe spring is connected with the sleeve, and the other end of the guide pipe spring is connected with the guide pipe.

Preferably, the outer surface of the chuck is provided with embossments.

As a preferable technical solution, a rotary bearing is provided in the second through hole, and the central shaft is connected to the second through hole through the rotary bearing.

As a preferred technical scheme, three clamping blocks are selected.

As mentioned above, the disposable self-stop limiting skull drill chuck has the following beneficial effects: the front end of the chuck is in a conical shape, the chuck is matched with the clamping block and the expanding spring to clamp the drill bit, the expanding spring is used for preventing the drill bit from vibrating and loosening in the working process, the relative height between the central shaft and the chuck can be adjusted through the limit switch, namely, the bolt is loosened, the limit block can be moved, the limit block drives the limit rod to move up or down, the limit rod drives the guide pipe to move up or down, the guide pipe drives the rear seat to move up or down, the central shaft is driven by the rear seat to move up or down, namely, the relative height between the central shaft and the chuck is adjusted, when the drill bit reaches a limit depth, the mounting rod at the bottom of the central shaft is separated from the converter, namely, the drill bit loses power, the automatic stop and the limiting function are realized, the design is reasonable, and the expanding spring is suitable for production, popularization and application.

Drawings

FIG. 1 is a schematic structural view of a disposable self-stop limiting skull drill chuck disclosed in the embodiment of the invention;

FIG. 2 is a schematic structural diagram of a clamping block in the disposable self-stop limiting skull drill chuck disclosed in the embodiment of the invention;

FIG. 3 is a view showing the clamping block clamping the drill bit in the disposable self-stop limit skull drill chuck disclosed in the embodiment of the invention;

FIG. 4 is a view showing the state of the clamping block of the disposable self-stop limit skull drill chuck for loosening the drill bit in the embodiment of the invention;

FIG. 5 is a half sectional view of the back seat of the disposable self-stop limiting skull drill chuck disclosed in the embodiment of the invention;

FIG. 6 is a half sectional view of the outer housing of the disposable self-stop cranium drill chuck in accordance with the embodiment of the present invention;

wherein the reference numerals are specified as follows: 1. a rear seat; 2. a conduit spring; 3. a sleeve; 4. an outer casing; 5. a tail cap; 6. a converter; 7. a rotating bearing; 8. a central shaft; 9. a conduit; 10. a limiting rod; 11. a pressurizing head; 12. a clamping block; 13. a chuck; 14. a spring is expanded; 15. mounting a rod; 16. a limiting block; 17. a bolt; 18. a chute; 19. a first slide hole.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 6. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Referring to fig. 1 to 6, the present invention provides a disposable self-stop limiting skull drill chuck, comprising: the rear seat 1, a clamping mechanism and a limiting mechanism, wherein the clamping mechanism comprises a chuck 13, clamping blocks 12, a spreading spring 14, a pressure head 11, a tail cap 5 and a converter 6, a plurality of clamping blocks 12 are arranged at the front end part in the chuck 13 along the circumferential direction, adjacent clamping blocks 12 are connected through the spreading spring 14, the pressure head 11 is arranged above the clamping blocks 12, a first internal thread is arranged on the inner side wall of the chuck 13, a first external thread matched with the first internal thread is arranged on the outer side wall of the tail cap 5, the tail cap 5 is in threaded connection with the chuck 13 through the matching of the first internal thread and the first external thread, a first through hole is arranged at the central position of the tail cap 5, a second internal thread is arranged on the inner side wall of the first through hole, a second external thread matched with the second internal thread is arranged on the outer side wall of the converter 6, and the converter 6 is in threaded connection with the tail cap 5 through the matching of the second internal thread and the second external thread; an outer housing 4 is sleeved outside the rear seat 1, and the rear seat 1 and the tail cap 5 are sealed by arranging the outer housing 4; the limiting mechanism comprises an installation rod 15, a guide pipe 9, a sleeve 3, a limiting switch, a guide pipe spring 2 and a sleeve 3, a central shaft 8 is arranged in a rear seat 1, the central shaft 8 and the rear seat 1 are coaxially arranged, a second through hole is formed in the upper end of the rear seat 1, one end of the central shaft 8 penetrates through the second through hole to the outside of the rear seat 1, an installation rod 15 is arranged at the other end of the central shaft 8, a converter 6 is provided with an installation groove corresponding to the installation rod 15, the installation rod 15 is arranged in the installation groove, the installation rod 15 can slide along the installation groove, the sleeve 3 is arranged at the upper end of a tail cap 5, the guide pipe 9 is arranged in the sleeve 3, the limiting switch comprises a limiting block 16 and a limiting rod 10, a first elongated sliding hole 19 is formed in the sleeve 3, a second elongated sliding hole corresponding to the first sliding hole 19 is formed in the rear seat 1, a third elongated sliding hole corresponding to the second sliding hole is formed in the outer housing 4, and the bottom of the guide pipe 9 is connected with one end of the limiting rod 10, the other end of the limiting rod 10 sequentially penetrates through the first sliding hole 19, the second sliding hole and the third sliding hole to the outside of the outer housing 4, the other end of the limiting rod 10 is connected with the limiting block 16, a third through hole is formed in the limiting block 16, a third internal thread is arranged in the third through hole, a bolt 17 is arranged in the third through hole, the bolt 17 is in threaded connection with the third through hole, and a sliding groove 18 is formed in the outer housing 4 corresponding to the bolt 17; the other end of the guide pipe 9 extends out of the sleeve 3 to be connected with the inner side wall of the rear seat 1, a guide pipe spring 2 is arranged on the outer side of the guide pipe 9, one end of the guide pipe spring 2 is connected with the sleeve 3, and the other end of the guide pipe spring 2 is connected with the guide pipe 9.

The disposable self-stop limiting skull drill chuck provided by the embodiment has the advantages that the embossing is arranged on the outer surface of the chuck 13, and the embossing is arranged, so that the outer surface of the chuck 13 is rough, and the chuck 13 can be conveniently held by hands.

The disposable self-stop limiting skull drill chuck provided by the embodiment is characterized in that a rotary bearing 7 is arranged in the second through hole, and the central shaft 8 is connected with the second through hole through the rotary bearing 7.

In the disposable self-stop limiting skull drill chuck provided by the embodiment, three clamping blocks 12 are selected.

In a specific use: when the clamping block 12 is needed to clamp the drill bit, the drill bit is placed in the chuck 13, the chuck 13 is held by hand, the central shaft 8 is rotated, the central shaft 8 drives the converter 6 to rotate, the converter 6 moves downwards relative to the tail cap 5, the pressurizing head 11 is gradually pushed, and as shown in fig. 3, the pressurizing head 11 extrudes the clamping block 12 to complete the action of clamping the drill bit. When the drill bit needs to be loosened, the central shaft 8 is reversely rotated, the central shaft 8 drives the converter 6 to rotate, the converter 6 moves upwards relative to the tail cap 5, as shown in fig. 4, the clamping block 12 can be jacked open by the counterforce of the expanding spring 14, and the clamping block 12 moves backwards to complete the loosening action.

When the drill bit is clamped, the central shaft 8 is connected with a power source to rotate so as to drive the drill bit to rotate, when the drill bit reaches a limit depth, the mounting rod 15 at the bottom of the central shaft 8 is separated from the converter 6, namely the central shaft 8 is connected with the power source, the power source drives the central shaft 8 to rotate, the central shaft 8 does not move up and down, the central shaft 8 drives the converter 6 to rotate, the converter 6 drives the tail cap 5 to rotate, the tail cap 5 drives the chuck 13 to rotate, and the chuck 13 drives the clamping block 12 to rotate, namely, the drill bit is driven to rotate; during the process of moving the drill bit downwards in a rotating cutting mode, the drill bit drives the clamping block 12 to move downwards, namely drives the chuck 13 and the tail cap 5 to move downwards, the tail cap 5 drives the converter 6 to move downwards, the central shaft 8 keeps in the original position in the process of moving the converter 6 downwards, namely the mounting rod 15 at the bottom of the central shaft 8 slowly slides out of the mounting groove in the converter 6, when the mounting rod 15 slides out of the mounting groove in the converter 6, namely the mounting rod at the bottom of the central shaft 8 is separated from the converter 6, the drill bit loses power, and the automatic stop is realized, and the limiting function is realized.

In conclusion, the disposable automatic stop limiting skull drill chuck solves the problem that an electric bone drill in the prior art is lack of a tool which can stop automatically and has a limiting function, is reasonable in design, and is suitable for production, popularization and application. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can 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.