CN219700035U

CN219700035U - Skull drill bit

Info

Publication number: CN219700035U
Application number: CN202320975052.5U
Authority: CN
Inventors: 张佳顺; 娄海平; 陈思汗; 柳长风
Original assignee: Guizhou Zirui Technology Co ltd
Current assignee: Guizhou Zirui Technology Co ltd
Priority date: 2023-04-26
Filing date: 2023-04-26
Publication date: 2023-09-19
Anticipated expiration: 2033-04-26

Abstract

The utility model discloses a skull drill bit, which comprises a transmission block and a shell fixedly sleeved on the outer side of the transmission block, wherein one end of the shell is sleeved with a drill bit assembly, the other end of the shell is provided with a limiting device, the drill bit assembly is elastically connected with the transmission block, and the limiting device is detachably connected with the drill bit assembly; when the limiting device is used, the extrusion drill bit assembly is abutted against the transmission block and synchronously rotates, after the use, the drill bit assembly is separated from the transmission block and stops rotating under the action of elastic force, and the drill bit assembly is separated from the limiting device by pushing the limiting device, so that the drill bit assembly is convenient to take down. The drill bit assembly elastically connected with the transmission block is arranged, so that accidental injury of the drill bit can be prevented when the drill bit is not used, and meanwhile, the limiting device is arranged so as to facilitate disassembly and cleaning of the drill bit assembly, and the drill bit assembly is simple and compact in structure and convenient to operate.

Description

Skull drill bit

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a skull drill bit.

Background

The skull drill bit circulated in the market is usually integrated with the interface shell and the clutch, and cannot be disassembled because of integral rotation, so that the skull drill bit is not easy to clean after being used, particularly, the gap between the inner drill bit and the outer drill bit and the gap between the inner drill bit and the clutch remain foreign matters and possibly generate bacteria, and when the skull drill bit is repeatedly used, the generated bacteria bring safety risks to the next operation.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to solve the technical problems that: provides a skull drill bit which is convenient to assemble and disassemble and can improve the use safety.

In order to solve the technical problems, the utility model adopts a technical scheme that: the skull drill bit comprises a transmission block and a shell fixedly sleeved on the outer side of the transmission block, wherein one end of the shell is sleeved with a drill bit assembly, the other end of the shell is provided with a limiting device, the drill bit assembly is elastically connected with the transmission block, and the limiting device is detachably connected with the drill bit assembly; when the limiting device is used, the extrusion drill bit assembly is abutted against the transmission block and synchronously rotates, after the use, the drill bit assembly is separated from the transmission block and stops rotating under the action of elastic force, and the drill bit assembly is separated from the limiting device by pushing the limiting device, so that the drill bit assembly is convenient to take down.

By adopting the structure, the limiting device abuts against the drill bit assembly to limit, and the drill bit assembly is arranged to be elastically connected with the transmission block, so that on one hand, the transmission of the drill bit assembly is limited, on the other hand, the installation is convenient, and meanwhile, the drill bit assembly is prevented from falling off; when the device is used, the extrusion drill bit assembly is abutted against the transmission block and synchronously rotates, and after the device is used, the drill bit assembly is separated from the transmission block and stops rotating under the action of elastic force, so that the use safety is ensured, and the damage to a non-operation position is avoided; when the drill bit component is separated from the limiting device, the limiting device is shifted, so that the drill bit component is convenient to take down, the disassembly, the cleaning and the disinfection are facilitated, and the structure is simple and compact.

For simplifying the structure and just with the transmission, as the preferred be equipped with the mounting hole on the shell, the drill bit subassembly is including the cover establish at the interior outer drill bit of mounting hole and laminating cup joint the interior drill bit of outer drill bit the middle part of interior drill bit is equipped with the guiding hole, and the one end of this interior drill bit is equipped with first lug the one end of outer drill bit is equipped with the second lug that the central line direction of outside drill bit stretches out, the terminal surface butt of the inside wall and the interior drill bit corresponding end of second lug, and the lateral wall butt of the lateral wall of the first lug of corresponding end and the lateral wall butt of second lug, the axial lateral wall of first lug emits the axial lateral wall of second lug.

For simplifying the structure and being convenient for install, as the preference the middle part of transmission piece is equipped with the installation through-hole is interior to paste to wear to be equipped with the connecting rod, the one end of connecting rod is equipped with the guide bar of being connected with the guide hole spiro union, and the other end is equipped with along the axial of connecting rod and places the hole place downthehole sleeve be equipped with wear to be equipped with the ejector pin on the sleeve the one end butt of ejector pin and the one end butt of first pressure spring, the other end and the hole bottom butt of mounting hole, the other end and the hole bottom butt of placing the hole of first pressure spring.

In order to facilitate transmission and simplify the structure, preferably, the transmission block is provided with a third bump, and when in use, the drill bit assembly is extruded, and the first bump is abutted with the side wall of the third bump, so that the transmission block drives the drill bit assembly to synchronously rotate.

In order to facilitate installation, preferably, an opening communicated with the installation hole is formed in the shell, the limiting device comprises a pressing block inserted into the opening, a through hole penetrating through one end of the connecting rod is formed in the pressing block, the penetrating end of the connecting rod is abutted to the bottom of the installation hole, and a limiting block is arranged on the wall of the through hole; the limiting groove is wound on the outer side wall of the connecting rod, and the inner side end face of the limiting block is in butt joint with the inner side groove wall of the limiting groove to limit.

For the spacing transmission piece of being convenient for, as the preference be equipped with the backing ring on the pore wall of installation through-hole one end, the inside wall of backing ring and the outside cell wall butt spacing of spacing groove.

For the installation spacing of being convenient for, as the preference the position department that corresponds the briquetting on the mounting hole is equipped with the groove of stepping down the tank bottom of groove of stepping down is equipped with the fixed orifices the inslot of stepping down is equipped with the second pressure spring the position department that corresponds the second pressure spring on the briquetting is equipped with the constant head tank, the one end of second pressure spring stretches into in the constant head tank and with the tank bottom butt of constant head tank, the other end of this second pressure spring stretches into in the fixed orifices and with the hole bottom butt of fixed orifices.

In order to reduce the installation resistance and facilitate quick installation in place, preferably, an abdication inclined section is arranged on the end surface of one end of the connecting rod corresponding to the limiting groove, and a transition inclined section is arranged on the limiting block corresponding to the abdication inclined section; when the connecting rod passes through the through hole, the yielding inclined section and the transition inclined section are attached to each other to move in a yielding way, so that the inner side end face of the limiting block is in butt joint with the inner side groove wall of the limiting groove to limit.

The beneficial effects are that: the drill bit assembly elastically connected with the transmission block is arranged, so that accidental injury of the drill bit can be prevented when the drill bit is not used, and meanwhile, the limiting device is arranged so as to facilitate disassembly and cleaning of the drill bit assembly, and the drill bit assembly is simple and compact in structure and convenient to operate.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is an exploded view of the present utility model.

Fig. 2 is a schematic view of the mounting structure of the present utility model.

Fig. 3 is an enlarged view at a in fig. 2.

Fig. 4 is a schematic view of the structure of the inner drill bit.

Fig. 5 is a schematic structural view of the outer drill bit.

Fig. 6 is a schematic structural view of a drill bit assembly.

Fig. 7 is a schematic structural view of the transmission block.

Fig. 8 is a schematic structural view of the housing.

Fig. 9 is a schematic structural view of the connecting rod.

Fig. 10 is a schematic structural view of the briquette.

Fig. 11 is a perspective view of the present utility model.

The meaning of the reference numerals in the drawings are:

a transmission block-1; a mounting hole-10; a housing-11; a baffle ring-12; a third bump-13; a yielding groove-14); a fixing hole-141; a second compression spring-15;

an inner drill bit-21; a guide hole-210; a first bump-211; an outer drill bit-22; second bump 221;

a connecting rod-3; a guide bar-31; a sleeve-32; ejector rod-33; a first compression spring-34; limit groove-35; yielding an inclined section-351;

briquetting-4; a limiting block-41; transition bevel segment-411; positioning groove-42.

Detailed Description

As shown in fig. 1 to 11, the utility model comprises a transmission block 1 and a shell 11 fixedly sleeved on the outer side of the transmission block 1, wherein one end of the shell 11 is sleeved with a drill bit assembly, the other end of the shell is provided with a limiting device, the drill bit assembly is elastically connected with the transmission block 11, and the limiting device is detachably connected with the drill bit assembly; when the limiting device is used, the extrusion drill bit assembly is abutted against the transmission block and synchronously rotates, after the use, the drill bit assembly is separated from the transmission block and stops rotating under the action of elastic force, and the drill bit assembly is separated from the limiting device by pushing the limiting device, so that the drill bit assembly is convenient to take down.

Specifically, the casing 11 is provided with a mounting hole 10, the drill bit assembly includes an outer drill bit 22 sleeved in the mounting hole 10 and an inner drill bit 21 fitted and sleeved in the outer drill bit 22, a guide hole 211 is provided in the middle of the inner drill bit 21, one end of the inner drill bit 21 is provided with three first protrusions 211 along the circumferential direction, one end of the outer drill bit 22 is provided with three second protrusions 221 extending toward the center line direction of the outer drill bit 22 along the circumferential direction, the three first protrusions 211 and the second protrusions 221 are staggered with each other, the inner side wall of the second protrusions 221 is abutted with the end face of the corresponding end of the inner drill bit 21, the side wall of the first protrusion 211 at the corresponding end is abutted with the side walls of two adjacent second protrusions 221, and the axial outer side wall of the first protrusions 211 is protruded out of the axial outer side wall of the second protrusions 221; three third protruding blocks 13 are arranged on the transmission block 1 along the circumferential direction, when the drill bit assembly is extruded, the three first protruding blocks 211 and the third protruding blocks 13 are mutually staggered and inserted, and the side walls of the first protruding blocks 211 and the third protruding blocks 13 are mutually abutted, so that the transmission block 1 drives the drill bit assembly to synchronously rotate.

The middle part of the transmission block 1 is provided with an installation through hole, a connecting rod 3 is arranged in the installation through hole in a joint penetrating manner, one end of the connecting rod 3 is provided with a guide rod 31 connected with a guide hole 211 in a threaded manner, the other end of the connecting rod is provided with a placing hole along the axial direction of the connecting rod 3, a sleeve 32 is arranged in the placing hole, a push rod 33 is arranged on the sleeve 32 in a penetrating manner, one end of the push rod 33 is abutted with one end of a first pressure spring 34, the other end of the push rod is abutted with the bottom of the installation hole 10, and the other end of the first pressure spring 34 is abutted with the bottom of the placing hole.

An opening communicated with the mounting hole 10 is formed in the shell 11, the limiting device comprises a pressing block 4 inserted into the opening, a through hole penetrating through one end of the connecting rod 3 is formed in the pressing block 4, the penetrating end of the connecting rod 3 is abutted to the bottom of the mounting hole 10, and a limiting block 41 is arranged on the wall of the through hole; a limiting groove 35 is wound on the outer side wall of the connecting rod 3, and the inner side end surface of the limiting block 41 is in abutting limiting connection with the inner side groove wall of the limiting groove 35; the hole wall at one end of the installation through hole is provided with a baffle ring 12, and the inner side wall of the baffle ring 12 is in butt joint with the outer side wall of the limit groove 35 to limit.

A yielding inclined section 351 is arranged on the end surface of the connecting rod 3 corresponding to one end of the limiting groove 35, and a transition inclined section 411 is arranged on the limiting block 41 corresponding to the yielding inclined section 351; when the connecting rod 3 passes through the through hole, the yielding inclined section 351 and the transition inclined section 411 are attached to each other to move, so that the inner side end surface of the limiting block 41 is in butt joint with the inner side groove wall of the limiting groove 35.

The mounting hole 10 is provided with a relief groove 14 corresponding to the position of the pressing block 4, the bottom of the relief groove 14 is provided with a fixing hole 141, a second pressure spring 15 is arranged in the relief groove 14, the position of the pressing block 4 corresponding to the second pressure spring 15 is provided with a positioning groove 42, one end of the second pressure spring 15 stretches into the positioning groove 42 and is in butt joint with the bottom of the positioning groove 42, and the other end of the second pressure spring 15 stretches into the fixing hole 141 and is in butt joint with the bottom of the fixing hole 141.

The application principle of the utility model is as follows:

as shown in fig. 1 to 11, before use, a handle (not labeled) is sleeved on the outer side of the shell 11, the shell 11 is connected with the output end of a power motor (not labeled), the power motor (not labeled) is started to drive the shell 11 to rotate, and the transmission block 1 is synchronously driven to rotate, because the connecting rod 3 is jointed and sleeved with the transmission block 1, the guide rod 31 is in threaded connection with the inner drill bit 21, namely the transmission block 1 rotates, but the connecting rod 3 is not driven to synchronously rotate, and the inner drill bit 21 and the outer drill bit 22 are not synchronously rotated, so that the use safety is ensured and the non-operation position is prevented from being damaged; meanwhile, the inner side wall of the second bump 221 is abutted against the end face of the corresponding end of the inner drill bit 21, the inner side wall of the baffle ring 12 is abutted against the outer side wall of the limit groove 35 to limit, the inner side end face of the limit block 41 is abutted against the inner side wall of the limit groove 35 to limit, and the installation and positioning of the outer drill bit 22, the transmission block 1 and the connecting rod 3 are realized.

When the drill bit 21 is in use, the first pressure spring 34 is extruded by the transmission of the connecting rod 3 due to the abutting of the operation position, namely, the inner drill bit 21 moves towards the transmission block 1, meanwhile, the outer drill bit 22 is driven to synchronously move by abutting the second lug 221, and when the first lug 211 and the third lug 13 abut against each other in the rotation direction of the transmission block 1, the transmission block 1 drives the inner drill bit 21 and the outer drill bit 22 to synchronously rotate, and the drilling operation of the operation position is started; after the drilling operation is finished, the handle is taken up, the inner drill 21 is not stressed to be abutted against the operation position, the connecting rod 3 is pushed to move back under the action of the elastic force of the first pressure spring 34, namely the inner drill 21 is pushed to be far away from the transmission block 1, when the first lug 211 is not abutted against the third lug 13, the inner drill 21 stops rotating gradually, and the outer drill 22 also stops rotating, so that the state before the use is restored.

It should be noted that, in the use process of drilling, if the situation of drilling the skull is met, the inner drill 21 is not stressed to abut against the operation position, under the action of the elastic force of the first pressure spring 34, the connecting rod 3 is immediately pushed to move back, that is, the inner drill 21 is pushed to be away from the transmission block 1 and at the suspension moment, when the first bump 211 and the third bump 13 are not abutted, the inner drill 21 gradually stops rotating, and the outer drill 22 also stops rotating, so as not to injure the brain non-operation position by mistake.

When the disassembly is needed, the pressing block 4 is pressed down, the pressing block 4 moves towards the yielding groove 14 and simultaneously extrudes the second pressure spring 15, when the inner side end face of the limiting block 41 is not abutted against the inner side groove wall of the limiting groove 35, the connecting rod 3 is not limited and falls out of the transmission block 1, the outer drill bit 22 and the inner drill bit 21 are carried simultaneously, the guide rod 31 which is in threaded connection is taken down, the inner drill bit 21 is taken out from the outer drill bit 22, and the positions of the inner drill bit 21, the outer drill bit 22 and the transmission block 1 can be fully cleaned, so that bacterial breeding is avoided, and the improvement of the safety of repeated use is facilitated.

After cleaning, the outer drill bit 22 is sleeved on the inner drill bit 21, the connecting rod 3 with the guide rod 31 is connected in a screwed manner, then the connecting rod 3 stretches into the installation through hole, the yielding inclined section 351 and the transitional inclined section 411 are attached to each other and move, the stretching end of the connecting rod 3 is enabled to move and stretch into place, at the moment, the first pressure spring 34 is positioned in the placement hole, one end of the ejector rod 33 is abutted with one end of the first pressure spring 34, the other end is abutted with the bottom of the installation hole 10, the inner side end face of the limiting block 41 is abutted and limited with the inner side groove wall of the limiting groove 35, and the use is started according to the related steps.

Claims

1. A skull drill bit, characterized in that: the drilling machine comprises a transmission block (1) and a shell (11) fixedly sleeved on the outer side of the transmission block (1), wherein a drill bit assembly is sleeved at one end of the shell (11), a limiting device is arranged at the other end of the shell, the drill bit assembly is elastically connected with the transmission block (1), and the limiting device is detachably connected with the drill bit assembly; when the limiting device is used, the extrusion drill bit assembly is abutted against the transmission block and synchronously rotates, after the use, the drill bit assembly is separated from the transmission block and stops rotating under the action of elastic force, and the drill bit assembly is separated from the limiting device by pushing the limiting device, so that the drill bit assembly is convenient to take down.

2. A skull drill according to claim 1, characterized in that: be equipped with mounting hole (10) on shell (11), drill bit subassembly is including cover outer drill bit (22) and laminating of establishing in mounting hole (10) cup joint interior drill bit (21) in outer drill bit (22) the middle part of interior drill bit (21) is equipped with guiding hole (210), and the one end of this interior drill bit (21) is equipped with first lug (211) the one end of outer drill bit (22) is equipped with second lug (221) that the central line direction of outside drill bit (22) stretches out, the terminal surface butt of the inside wall of second lug (221) and the corresponding end of interior drill bit (21), and the lateral wall of corresponding end first lug (211) and the lateral wall butt of second lug (221), the axial lateral wall of first lug (211) emits the axial lateral wall of second lug (221).

3. A skull drill according to claim 2, characterized in that: the middle part of transmission piece (1) is equipped with the installation through-hole is interior to be fit for wearing to be equipped with connecting rod (3), the one end of connecting rod (3) is equipped with guide bar (31) with guiding hole (210) spiro union connection, and the other end is equipped with along the axial of connecting rod (3) and places the hole be equipped with sleeve (32) place downthehole sleeve (32) are last to wear to be equipped with ejector pin (33) the one end and the one end butt of first pressure spring (34) of ejector pin (33), the other end and the hole bottom butt of mounting hole (10), the other end and the hole bottom butt of placing the hole of first pressure spring (34).

4. A skull drill according to claim 3, wherein: the transmission block (1) is provided with a third lug (13), and when the drill bit assembly is used, the side wall of the first lug (211) is abutted with the side wall of the third lug (13) so that the transmission block (1) drives the drill bit assembly to synchronously rotate.

5. A skull drill according to claim 3, wherein: an opening communicated with the mounting hole (10) is formed in the shell (11), the limiting device comprises a pressing block (4) inserted into the opening, a through hole penetrating through one end of the connecting rod (3) is formed in the pressing block (4), the penetrating end of the connecting rod (3) is abutted to the bottom of the mounting hole (10), and a limiting block (41) is arranged on the wall of the through hole; the outer side wall of the connecting rod (3) is wound with a limiting groove (35), and the inner side end surface of the limiting block (41) is in butt joint with the inner side groove wall of the limiting groove (35).

6. A skull drill according to claim 5, wherein: the hole wall at one end of the installation through hole is provided with a baffle ring (12), and the inner side wall of the baffle ring (12) is in butt joint with the outer side wall of the limit groove (35) to limit.

7. A skull drill according to claim 5, wherein: the mounting hole (10) is provided with a yielding groove (14) corresponding to the pressing block (4), a fixing hole (141) is formed in the groove bottom of the yielding groove (14), a second pressure spring (15) is arranged in the yielding groove (14), a positioning groove (42) is formed in the pressing block (4) corresponding to the second pressure spring (15), one end of the second pressure spring (15) stretches into the positioning groove (42) and is in butt joint with the groove bottom of the positioning groove (42), and the other end of the second pressure spring (15) stretches into the fixing hole (141) and is in butt joint with the hole bottom of the fixing hole (141).

8. A skull drill according to claim 5, wherein: an abdication inclined section (351) is arranged on the end face of the connecting rod (3) corresponding to one end of the limiting groove (35), and a transition inclined section (411) is arranged on the limiting block (41) corresponding to the abdication inclined section (351); when the connecting rod (3) passes through the through hole, the yielding inclined section (351) and the transition inclined section (411) are attached to each other to be yielding, so that the inner side end face of the limiting block (41) is in butt joint with the inner side groove wall of the limiting groove (35) to limit.